Merge branch 'android-4.14-spl-topic' into exynos9609
[GitHub/moto-9609/android_kernel_motorola_exynos9610.git] / drivers / android / binder.c
index e048cd7cd799095d355b797d0d450d8a0ddef29c..4344956cd59d9fd657b3af59b82942c440fae6f5 100644 (file)
@@ -355,6 +355,7 @@ struct binder_error {
  * @min_priority:         minimum scheduling priority
  *                        (invariant after initialized)
  * @inherit_rt:           inherit RT scheduling policy from caller
+ * @txn_security_ctx:     require sender's security context
  *                        (invariant after initialized)
  * @async_todo:           list of async work items
  *                        (protected by @proc->inner_lock)
@@ -394,6 +395,7 @@ struct binder_node {
                u8 sched_policy:2;
                u8 inherit_rt:1;
                u8 accept_fds:1;
+               u8 txn_security_ctx:1;
                u8 min_priority;
        };
        bool has_async_transaction;
@@ -651,6 +653,7 @@ struct binder_transaction {
        struct binder_priority  saved_priority;
        bool    set_priority_called;
        kuid_t  sender_euid;
+       binder_uintptr_t security_ctx;
        /**
         * @lock:  protects @from, @to_proc, and @to_thread
         *
@@ -788,6 +791,98 @@ _binder_node_inner_unlock(struct binder_node *node, int line)
        spin_unlock(&node->lock);
 }
 
+#ifdef CONFIG_DEBUG_SNAPSHOT_BINDER
+/*
+ * Binder Debug Snapshot
+ */
+static void init_binder_transaction_base(int type, struct trace_binder_transaction_base *base,
+                                        struct binder_transaction *t, struct binder_thread *from,
+                                        struct binder_thread *to)
+{
+       struct binder_thread *t_from;
+       struct binder_thread *t_to;
+
+       if (base == NULL)
+               return;
+
+       t_from = t->from ? t->from : (from ? from : NULL);
+       t_to = t->to_thread ? t->to_thread : (to ? to : NULL);
+       base->trace_type = type;
+       base->transaction_id = t->debug_id;
+       base->from_pid = t_from ? t_from->proc->pid : 0;
+       base->from_tid = t_from ? t_from->pid : 0;
+       base->to_pid = t->to_proc ? t->to_proc->pid : 0;
+       base->to_tid = t_to ? t_to->pid : 0;
+       if (t_from) {
+               strncpy(base->from_pid_comm, t_from->proc->tsk->comm, TASK_COMM_LEN);
+               strncpy(base->from_tid_comm, t_from->task->comm, TASK_COMM_LEN);
+       } else {
+               base->from_pid_comm[0] = '\0';
+               base->from_tid_comm[0] = '\0';
+       }
+       if (t->to_proc)
+               strncpy(base->to_pid_comm, t->to_proc->tsk->comm, TASK_COMM_LEN);
+       else
+               base->to_pid_comm[0] = '\0';
+       if (t_to)
+               strncpy(base->to_tid_comm, t_to->task->comm, TASK_COMM_LEN);
+       else
+               base->to_tid_comm[0] = '\0';
+}
+
+static void dss_binder_transaction(int reply, struct binder_transaction *t, struct binder_thread *from, int to_node_id)
+{
+       struct trace_binder_transaction_base base;
+       struct trace_binder_transaction transaction;
+
+       init_binder_transaction_base(TRANSACTION, &base, t, from, NULL);
+       transaction.to_node_id = to_node_id;
+       transaction.reply = reply;
+       transaction.flags = t->flags;
+       transaction.code = t->code;
+
+       dbg_snapshot_binder(&base, &transaction, NULL);
+}
+
+static void dss_binder_transaction_received(struct binder_transaction *t, struct binder_thread *to)
+{
+       struct trace_binder_transaction_base base;
+
+       init_binder_transaction_base(TRANSACTION_DONE, &base, t, NULL, to);
+
+       dbg_snapshot_binder(&base, NULL, NULL);
+}
+
+static void dss_binder_transaction_failed(int reply, struct binder_transaction_log_entry *e,
+                                         char *from_pid_comm, char *from_tid_comm,
+                                         unsigned int flags, unsigned int code)
+{
+       struct trace_binder_transaction_base base;
+       struct trace_binder_transaction transaction;
+       struct trace_binder_transaction_error error;
+
+       base.trace_type = TRANSACTION_ERROR;
+       base.transaction_id = e->debug_id;
+       base.from_pid = e->from_proc;
+       base.from_tid = e->from_thread;
+       base.to_pid = e->to_proc;
+       base.to_tid = e->to_thread;
+       strncpy(base.from_pid_comm, from_pid_comm, TASK_COMM_LEN);
+       strncpy(base.from_tid_comm, from_tid_comm, TASK_COMM_LEN);
+       base.to_pid_comm[0] = '\0';
+       base.to_tid_comm[0] = '\0';
+       transaction.to_node_id = e->to_node;
+       transaction.reply = reply;
+       transaction.flags = flags;
+       transaction.code = code;
+       error.return_error = e->return_error;
+       error.return_error_param = e->return_error_param;
+       error.return_error_line = e->return_error_line;
+
+       dbg_snapshot_binder(&base, &transaction, &error);
+}
+#endif /* CONFIG_DEBUG_SNAPSHOT_BINDER */
+
 static bool binder_worklist_empty_ilocked(struct list_head *list)
 {
        return list_empty(list);
@@ -1191,8 +1286,8 @@ static void binder_do_set_priority(struct task_struct *task,
                long min_nice = rlimit_to_nice(task_rlimit(task, RLIMIT_NICE));
 
                if (min_nice > MAX_NICE) {
-                       binder_user_error("%d RLIMIT_NICE not set\n",
-                                         task->pid);
+                       binder_user_error("%d(%s) RLIMIT_NICE not set\n",
+                                         task->pid, task->comm);
                        return;
                } else if (priority < min_nice) {
                        priority = min_nice;
@@ -1202,8 +1297,8 @@ static void binder_do_set_priority(struct task_struct *task,
        if (policy != desired.sched_policy ||
            to_kernel_prio(policy, priority) != desired.prio)
                binder_debug(BINDER_DEBUG_PRIORITY_CAP,
-                            "%d: priority %d not allowed, using %d instead\n",
-                             task->pid, desired.prio,
+                            "%d(%s): priority %d not allowed, using %d instead\n",
+                             task->pid, task->comm, desired.prio,
                              to_kernel_prio(policy, priority));
 
        trace_binder_set_priority(task->tgid, task->pid, task->normal_prio,
@@ -1360,12 +1455,13 @@ static struct binder_node *binder_init_node_ilocked(
        node->min_priority = to_kernel_prio(node->sched_policy, priority);
        node->accept_fds = !!(flags & FLAT_BINDER_FLAG_ACCEPTS_FDS);
        node->inherit_rt = !!(flags & FLAT_BINDER_FLAG_INHERIT_RT);
+       node->txn_security_ctx = !!(flags & FLAT_BINDER_FLAG_TXN_SECURITY_CTX);
        spin_lock_init(&node->lock);
        INIT_LIST_HEAD(&node->work.entry);
        INIT_LIST_HEAD(&node->async_todo);
        binder_debug(BINDER_DEBUG_INTERNAL_REFS,
-                    "%d:%d node %d u%016llx c%016llx created\n",
-                    proc->pid, current->pid, node->debug_id,
+                    "%d:%d(%s:%s) node %d u%016llx c%016llx created\n",
+                    proc->pid, current->pid, proc->tsk->comm, current->comm, node->debug_id,
                     (u64)node->ptr, (u64)node->cookie);
 
        return node;
@@ -1708,8 +1804,8 @@ static struct binder_ref *binder_get_ref_for_node_olocked(
        hlist_add_head(&new_ref->node_entry, &node->refs);
 
        binder_debug(BINDER_DEBUG_INTERNAL_REFS,
-                    "%d new ref %d desc %d for node %d\n",
-                     proc->pid, new_ref->data.debug_id, new_ref->data.desc,
+                    "%d(%s) new ref %d desc %d for node %d\n",
+                     proc->pid, proc->tsk->comm, new_ref->data.debug_id, new_ref->data.desc,
                      node->debug_id);
        binder_node_unlock(node);
        return new_ref;
@@ -1720,8 +1816,8 @@ static void binder_cleanup_ref_olocked(struct binder_ref *ref)
        bool delete_node = false;
 
        binder_debug(BINDER_DEBUG_INTERNAL_REFS,
-                    "%d delete ref %d desc %d for node %d\n",
-                     ref->proc->pid, ref->data.debug_id, ref->data.desc,
+                    "%d(%s) delete ref %d desc %d for node %d\n",
+                     ref->proc->pid, ref->proc->tsk->comm, ref->data.debug_id, ref->data.desc,
                      ref->node->debug_id);
 
        rb_erase(&ref->rb_node_desc, &ref->proc->refs_by_desc);
@@ -1748,8 +1844,8 @@ static void binder_cleanup_ref_olocked(struct binder_ref *ref)
 
        if (ref->death) {
                binder_debug(BINDER_DEBUG_DEAD_BINDER,
-                            "%d delete ref %d desc %d has death notification\n",
-                             ref->proc->pid, ref->data.debug_id,
+                            "%d(%s) delete ref %d desc %d has death notification\n",
+                             ref->proc->pid, ref->proc->tsk->comm, ref->data.debug_id,
                              ref->data.desc);
                binder_dequeue_work(ref->proc, &ref->death->work);
                binder_stats_deleted(BINDER_STAT_DEATH);
@@ -1803,8 +1899,8 @@ static bool binder_dec_ref_olocked(struct binder_ref *ref, int strong)
 {
        if (strong) {
                if (ref->data.strong == 0) {
-                       binder_user_error("%d invalid dec strong, ref %d desc %d s %d w %d\n",
-                                         ref->proc->pid, ref->data.debug_id,
+                       binder_user_error("%d(%s) invalid dec strong, ref %d desc %d s %d w %d\n",
+                                         ref->proc->pid, ref->proc->tsk->comm, ref->data.debug_id,
                                          ref->data.desc, ref->data.strong,
                                          ref->data.weak);
                        return false;
@@ -1814,8 +1910,8 @@ static bool binder_dec_ref_olocked(struct binder_ref *ref, int strong)
                        binder_dec_node(ref->node, strong, 1);
        } else {
                if (ref->data.weak == 0) {
-                       binder_user_error("%d invalid dec weak, ref %d desc %d s %d w %d\n",
-                                         ref->proc->pid, ref->data.debug_id,
+                       binder_user_error("%d(%s) invalid dec weak, ref %d desc %d s %d w %d\n",
+                                         ref->proc->pid, ref->proc->tsk->comm, ref->data.debug_id,
                                          ref->data.desc, ref->data.strong,
                                          ref->data.weak);
                        return false;
@@ -2128,10 +2224,12 @@ static void binder_send_failed_reply(struct binder_transaction *t,
                target_thread = binder_get_txn_from_and_acq_inner(t);
                if (target_thread) {
                        binder_debug(BINDER_DEBUG_FAILED_TRANSACTION,
-                                    "send failed reply for transaction %d to %d:%d\n",
+                                    "send failed reply for transaction %d to %d:%d(%s:%s)\n",
                                      t->debug_id,
                                      target_thread->proc->pid,
-                                     target_thread->pid);
+                                     target_thread->pid,
+                                     target_thread->proc->tsk->comm,
+                                     target_thread->task->comm);
 
                        binder_pop_transaction_ilocked(target_thread, t);
                        if (target_thread->reply_error.cmd == BR_OK) {
@@ -2349,8 +2447,8 @@ static void binder_transaction_buffer_release(struct binder_proc *proc,
        int debug_id = buffer->debug_id;
 
        binder_debug(BINDER_DEBUG_TRANSACTION,
-                    "%d buffer release %d, size %zd-%zd, failed at %pK\n",
-                    proc->pid, buffer->debug_id,
+                    "%d(%s) buffer release %d, size %zd-%zd, failed at %pK\n",
+                    proc->pid, proc->tsk->comm, buffer->debug_id,
                     buffer->data_size, buffer->offsets_size, failed_at);
 
        if (buffer->target_node)
@@ -2493,8 +2591,8 @@ static int binder_translate_binder(struct flat_binder_object *fp,
                        return -ENOMEM;
        }
        if (fp->cookie != node->cookie) {
-               binder_user_error("%d:%d sending u%016llx node %d, cookie mismatch %016llx != %016llx\n",
-                                 proc->pid, thread->pid, (u64)fp->binder,
+               binder_user_error("%d:%d(%s:%s) sending u%016llx node %d, cookie mismatch %016llx != %016llx\n",
+                                 proc->pid, thread->pid, proc->tsk->comm, thread->task->comm, (u64)fp->binder,
                                  node->debug_id, (u64)fp->cookie,
                                  (u64)node->cookie);
                ret = -EINVAL;
@@ -2542,8 +2640,8 @@ static int binder_translate_handle(struct flat_binder_object *fp,
        node = binder_get_node_from_ref(proc, fp->handle,
                        fp->hdr.type == BINDER_TYPE_HANDLE, &src_rdata);
        if (!node) {
-               binder_user_error("%d:%d got transaction with invalid handle, %d\n",
-                                 proc->pid, thread->pid, fp->handle);
+               binder_user_error("%d:%d(%s:%s) got transaction with invalid handle, %d\n",
+                                 proc->pid, thread->pid, proc->tsk->comm, thread->task->comm, fp->handle);
                return -EINVAL;
        }
        if (security_binder_transfer_binder(proc->tsk, target_proc->tsk)) {
@@ -2615,8 +2713,8 @@ static int binder_translate_fd(int fd,
        else
                target_allows_fd = t->buffer->target_node->accept_fds;
        if (!target_allows_fd) {
-               binder_user_error("%d:%d got %s with fd, %d, but target does not allow fds\n",
-                                 proc->pid, thread->pid,
+               binder_user_error("%d:%d(%s:%s) got %s with fd, %d, but target does not allow fds\n",
+                                 proc->pid, thread->pid, proc->tsk->comm, thread->task->comm,
                                  in_reply_to ? "reply" : "transaction",
                                  fd);
                ret = -EPERM;
@@ -2625,8 +2723,8 @@ static int binder_translate_fd(int fd,
 
        file = fget(fd);
        if (!file) {
-               binder_user_error("%d:%d got transaction with invalid fd, %d\n",
-                                 proc->pid, thread->pid, fd);
+               binder_user_error("%d:%d(%s:%s) got transaction with invalid fd, %d\n",
+                                 proc->pid, thread->pid, proc->tsk->comm, thread->task->comm, fd);
                ret = -EBADF;
                goto err_fget;
        }
@@ -2671,15 +2769,15 @@ static int binder_translate_fd_array(struct binder_fd_array_object *fda,
 
        fd_buf_size = sizeof(u32) * fda->num_fds;
        if (fda->num_fds >= SIZE_MAX / sizeof(u32)) {
-               binder_user_error("%d:%d got transaction with invalid number of fds (%lld)\n",
-                                 proc->pid, thread->pid, (u64)fda->num_fds);
+               binder_user_error("%d:%d(%s:%s) got transaction with invalid number of fds (%lld)\n",
+                                 proc->pid, thread->pid, proc->tsk->comm, thread->task->comm, (u64)fda->num_fds);
                return -EINVAL;
        }
        if (fd_buf_size > parent->length ||
            fda->parent_offset > parent->length - fd_buf_size) {
                /* No space for all file descriptors here. */
-               binder_user_error("%d:%d not enough space to store %lld fds in buffer\n",
-                                 proc->pid, thread->pid, (u64)fda->num_fds);
+               binder_user_error("%d:%d(%s:%s) not enough space to store %lld fds in buffer\n",
+                                 proc->pid, thread->pid, proc->tsk->comm, thread->task->comm, (u64)fda->num_fds);
                return -EINVAL;
        }
        /*
@@ -2690,8 +2788,8 @@ static int binder_translate_fd_array(struct binder_fd_array_object *fda,
                binder_alloc_get_user_buffer_offset(&target_proc->alloc);
        fd_array = (u32 *)(parent_buffer + (uintptr_t)fda->parent_offset);
        if (!IS_ALIGNED((unsigned long)fd_array, sizeof(u32))) {
-               binder_user_error("%d:%d parent offset not aligned correctly.\n",
-                                 proc->pid, thread->pid);
+               binder_user_error("%d:%d(%s:%s) parent offset not aligned correctly.\n",
+                                 proc->pid, thread->pid, proc->tsk->comm, thread->task->comm);
                return -EINVAL;
        }
        for (fdi = 0; fdi < fda->num_fds; fdi++) {
@@ -2733,8 +2831,8 @@ static int binder_fixup_parent(struct binder_transaction *t,
 
        parent = binder_validate_ptr(b, bp->parent, off_start, num_valid);
        if (!parent) {
-               binder_user_error("%d:%d got transaction with invalid parent offset or type\n",
-                                 proc->pid, thread->pid);
+               binder_user_error("%d:%d(%s:%s) got transaction with invalid parent offset or type\n",
+                                 proc->pid, thread->pid, proc->tsk->comm, thread->task->comm);
                return -EINVAL;
        }
 
@@ -2742,16 +2840,16 @@ static int binder_fixup_parent(struct binder_transaction *t,
                                   parent, bp->parent_offset,
                                   last_fixup_obj,
                                   last_fixup_min_off)) {
-               binder_user_error("%d:%d got transaction with out-of-order buffer fixup\n",
-                                 proc->pid, thread->pid);
+               binder_user_error("%d:%d(%s:%s) got transaction with out-of-order buffer fixup\n",
+                                 proc->pid, thread->pid, proc->tsk->comm, thread->task->comm);
                return -EINVAL;
        }
 
        if (parent->length < sizeof(binder_uintptr_t) ||
            bp->parent_offset > parent->length - sizeof(binder_uintptr_t)) {
                /* No space for a pointer here! */
-               binder_user_error("%d:%d got transaction with invalid parent offset\n",
-                                 proc->pid, thread->pid);
+               binder_user_error("%d:%d(%s:%s) got transaction with invalid parent offset\n",
+                                 proc->pid, thread->pid, proc->tsk->comm, thread->task->comm);
                return -EINVAL;
        }
        parent_buffer = (u8 *)((uintptr_t)parent->buffer -
@@ -2897,6 +2995,8 @@ static void binder_transaction(struct binder_proc *proc,
        binder_size_t last_fixup_min_off = 0;
        struct binder_context *context = proc->context;
        int t_debug_id = atomic_inc_return(&binder_last_id);
+       char *secctx = NULL;
+       u32 secctx_sz = 0;
 
        e = binder_transaction_log_add(&binder_transaction_log);
        e->debug_id = t_debug_id;
@@ -2913,8 +3013,8 @@ static void binder_transaction(struct binder_proc *proc,
                in_reply_to = thread->transaction_stack;
                if (in_reply_to == NULL) {
                        binder_inner_proc_unlock(proc);
-                       binder_user_error("%d:%d got reply transaction with no transaction stack\n",
-                                         proc->pid, thread->pid);
+                       binder_user_error("%d:%d(%s:%s) got reply transaction with no transaction stack\n",
+                                         proc->pid, thread->pid, proc->tsk->comm, thread->task->comm);
                        return_error = BR_FAILED_REPLY;
                        return_error_param = -EPROTO;
                        return_error_line = __LINE__;
@@ -2922,12 +3022,17 @@ static void binder_transaction(struct binder_proc *proc,
                }
                if (in_reply_to->to_thread != thread) {
                        spin_lock(&in_reply_to->lock);
-                       binder_user_error("%d:%d got reply transaction with bad transaction stack, transaction %d has target %d:%d\n",
-                               proc->pid, thread->pid, in_reply_to->debug_id,
+                       binder_user_error("%d:%d(%s:%s) got reply transaction with bad transaction stack, "\
+                               "transaction %d has target %d:%d(%s:%s)\n",
+                               proc->pid, thread->pid, proc->tsk->comm, thread->task->comm, in_reply_to->debug_id,
                                in_reply_to->to_proc ?
                                in_reply_to->to_proc->pid : 0,
                                in_reply_to->to_thread ?
-                               in_reply_to->to_thread->pid : 0);
+                               in_reply_to->to_thread->pid : 0,
+                               in_reply_to->to_proc ?
+                               in_reply_to->to_proc->tsk->comm : "",
+                               in_reply_to->to_thread ?
+                               in_reply_to->to_thread->task->comm : "");
                        spin_unlock(&in_reply_to->lock);
                        binder_inner_proc_unlock(proc);
                        return_error = BR_FAILED_REPLY;
@@ -2945,8 +3050,9 @@ static void binder_transaction(struct binder_proc *proc,
                        goto err_dead_binder;
                }
                if (target_thread->transaction_stack != in_reply_to) {
-                       binder_user_error("%d:%d got reply transaction with bad target transaction stack %d, expected %d\n",
-                               proc->pid, thread->pid,
+                       binder_user_error("%d:%d(%s:%s) got reply transaction with bad target transaction "\
+                               "stack %d, expected %d\n",
+                               proc->pid, thread->pid, proc->tsk->comm, thread->task->comm,
                                target_thread->transaction_stack ?
                                target_thread->transaction_stack->debug_id : 0,
                                in_reply_to->debug_id);
@@ -2980,8 +3086,8 @@ static void binder_transaction(struct binder_proc *proc,
                                                ref->node, &target_proc,
                                                &return_error);
                        } else {
-                               binder_user_error("%d:%d got transaction to invalid handle\n",
-                                                 proc->pid, thread->pid);
+                               binder_user_error("%d:%d(%s:%s) got transaction to invalid handle\n",
+                                                 proc->pid, thread->pid, proc->tsk->comm, thread->task->comm);
                                return_error = BR_FAILED_REPLY;
                        }
                        binder_proc_unlock(proc);
@@ -3027,11 +3133,14 @@ static void binder_transaction(struct binder_proc *proc,
                        tmp = thread->transaction_stack;
                        if (tmp->to_thread != thread) {
                                spin_lock(&tmp->lock);
-                               binder_user_error("%d:%d got new transaction with bad transaction stack, transaction %d has target %d:%d\n",
-                                       proc->pid, thread->pid, tmp->debug_id,
+                               binder_user_error("%d:%d(%s:%s) got new transaction with bad transaction stack, "\
+                                       "transaction %d has target %d:%d(%s:%s)\n",
+                                       proc->pid, thread->pid, proc->tsk->comm, thread->task->comm, tmp->debug_id,
                                        tmp->to_proc ? tmp->to_proc->pid : 0,
                                        tmp->to_thread ?
-                                       tmp->to_thread->pid : 0);
+                                       tmp->to_thread->pid : 0,
+                                       tmp->to_proc ? tmp->to_proc->tsk->comm : "",
+                                       tmp->to_thread ? tmp->to_thread->task->comm : "");
                                spin_unlock(&tmp->lock);
                                binder_inner_proc_unlock(proc);
                                return_error = BR_FAILED_REPLY;
@@ -3056,8 +3165,9 @@ static void binder_transaction(struct binder_proc *proc,
                }
                binder_inner_proc_unlock(proc);
        }
-       if (target_thread)
+       if (target_thread) {
                e->to_thread = target_thread->pid;
+       }
        e->to_proc = target_proc->pid;
 
        /* TODO: reuse incoming transaction for reply */
@@ -3084,18 +3194,18 @@ static void binder_transaction(struct binder_proc *proc,
 
        if (reply)
                binder_debug(BINDER_DEBUG_TRANSACTION,
-                            "%d:%d BC_REPLY %d -> %d:%d, data %016llx-%016llx size %lld-%lld-%lld\n",
-                            proc->pid, thread->pid, t->debug_id,
-                            target_proc->pid, target_thread->pid,
+                            "%d:%d(%s:%s) BC_REPLY %d -> %d:%d (%s:%s), data %016llx-%016llx size %lld-%lld-%lld\n",
+                            proc->pid, thread->pid, proc->tsk->comm, thread->task->comm, t->debug_id,
+                            target_proc->pid, target_thread->pid, target_proc->tsk->comm, target_thread->task->comm,
                             (u64)tr->data.ptr.buffer,
                             (u64)tr->data.ptr.offsets,
                             (u64)tr->data_size, (u64)tr->offsets_size,
                             (u64)extra_buffers_size);
        else
                binder_debug(BINDER_DEBUG_TRANSACTION,
-                            "%d:%d BC_TRANSACTION %d -> %d - node %d, data %016llx-%016llx size %lld-%lld-%lld\n",
-                            proc->pid, thread->pid, t->debug_id,
-                            target_proc->pid, target_node->debug_id,
+                            "%d:%d(%s:%s) BC_TRANSACTION %d -> %d (%s) - node %d, data %016llx-%016llx size %lld-%lld-%lld\n",
+                            proc->pid, thread->pid, proc->tsk->comm, thread->task->comm, t->debug_id,
+                            target_proc->pid, target_proc->tsk->comm, target_node->debug_id,
                             (u64)tr->data.ptr.buffer,
                             (u64)tr->data.ptr.offsets,
                             (u64)tr->data_size, (u64)tr->offsets_size,
@@ -3120,6 +3230,23 @@ static void binder_transaction(struct binder_proc *proc,
                t->priority = target_proc->default_priority;
        }
 
+       if (target_node && target_node->txn_security_ctx) {
+               u32 secid;
+
+               security_task_getsecid(proc->tsk, &secid);
+               ret = security_secid_to_secctx(secid, &secctx, &secctx_sz);
+               if (ret) {
+                       return_error = BR_FAILED_REPLY;
+                       return_error_param = ret;
+                       return_error_line = __LINE__;
+                       goto err_get_secctx_failed;
+               }
+               extra_buffers_size += ALIGN(secctx_sz, sizeof(u64));
+       }
+
+#ifdef CONFIG_DEBUG_SNAPSHOT_BINDER
+       dss_binder_transaction(reply, t, t->from ? t->from : thread, target_node ? target_node->debug_id : 0);
+#endif
        trace_binder_transaction(reply, t, target_node);
 
        t->buffer = binder_alloc_new_buf(&target_proc->alloc, tr->data_size,
@@ -3136,7 +3263,19 @@ static void binder_transaction(struct binder_proc *proc,
                t->buffer = NULL;
                goto err_binder_alloc_buf_failed;
        }
-       t->buffer->allow_user_free = 0;
+       if (secctx) {
+               size_t buf_offset = ALIGN(tr->data_size, sizeof(void *)) +
+                                   ALIGN(tr->offsets_size, sizeof(void *)) +
+                                   ALIGN(extra_buffers_size, sizeof(void *)) -
+                                   ALIGN(secctx_sz, sizeof(u64));
+               char *kptr = t->buffer->data + buf_offset;
+
+               t->security_ctx = (uintptr_t)kptr +
+                   binder_alloc_get_user_buffer_offset(&target_proc->alloc);
+               memcpy(kptr, secctx, secctx_sz);
+               security_release_secctx(secctx, secctx_sz);
+               secctx = NULL;
+       }
        t->buffer->debug_id = t->debug_id;
        t->buffer->transaction = t;
        t->buffer->target_node = target_node;
@@ -3147,8 +3286,8 @@ static void binder_transaction(struct binder_proc *proc,
 
        if (copy_from_user(t->buffer->data, (const void __user *)(uintptr_t)
                           tr->data.ptr.buffer, tr->data_size)) {
-               binder_user_error("%d:%d got transaction with invalid data ptr\n",
-                               proc->pid, thread->pid);
+               binder_user_error("%d:%d(%s:%s) got transaction with invalid data ptr\n",
+                               proc->pid, thread->pid, proc->tsk->comm, thread->task->comm);
                return_error = BR_FAILED_REPLY;
                return_error_param = -EFAULT;
                return_error_line = __LINE__;
@@ -3156,24 +3295,24 @@ static void binder_transaction(struct binder_proc *proc,
        }
        if (copy_from_user(offp, (const void __user *)(uintptr_t)
                           tr->data.ptr.offsets, tr->offsets_size)) {
-               binder_user_error("%d:%d got transaction with invalid offsets ptr\n",
-                               proc->pid, thread->pid);
+               binder_user_error("%d:%d(%s:%s) got transaction with invalid offsets ptr\n",
+                               proc->pid, thread->pid, proc->tsk->comm, thread->task->comm);
                return_error = BR_FAILED_REPLY;
                return_error_param = -EFAULT;
                return_error_line = __LINE__;
                goto err_copy_data_failed;
        }
        if (!IS_ALIGNED(tr->offsets_size, sizeof(binder_size_t))) {
-               binder_user_error("%d:%d got transaction with invalid offsets size, %lld\n",
-                               proc->pid, thread->pid, (u64)tr->offsets_size);
+               binder_user_error("%d:%d(%s:%s) got transaction with invalid offsets size, %lld\n",
+                               proc->pid, thread->pid, proc->tsk->comm, thread->task->comm, (u64)tr->offsets_size);
                return_error = BR_FAILED_REPLY;
                return_error_param = -EINVAL;
                return_error_line = __LINE__;
                goto err_bad_offset;
        }
        if (!IS_ALIGNED(extra_buffers_size, sizeof(u64))) {
-               binder_user_error("%d:%d got transaction with unaligned buffers size, %lld\n",
-                                 proc->pid, thread->pid,
+               binder_user_error("%d:%d(%s:%s) got transaction with unaligned buffers size, %lld\n",
+                                 proc->pid, thread->pid, proc->tsk->comm, thread->task->comm,
                                  (u64)extra_buffers_size);
                return_error = BR_FAILED_REPLY;
                return_error_param = -EINVAL;
@@ -3189,8 +3328,10 @@ static void binder_transaction(struct binder_proc *proc,
                size_t object_size = binder_validate_object(t->buffer, *offp);
 
                if (object_size == 0 || *offp < off_min) {
-                       binder_user_error("%d:%d got transaction with invalid offset (%lld, min %lld max %lld) or object.\n",
-                                         proc->pid, thread->pid, (u64)*offp,
+                       binder_user_error("%d:%d(%s:%s) got transaction with invalid offset (%lld, min %lld max %lld)"\
+                                         " or object.\n",
+                                         proc->pid, thread->pid, proc->tsk->comm, thread->task->comm,
+                                         (u64)*offp,
                                          (u64)off_min,
                                          (u64)t->buffer->data_size);
                        return_error = BR_FAILED_REPLY;
@@ -3251,8 +3392,8 @@ static void binder_transaction(struct binder_proc *proc,
                                                    off_start,
                                                    offp - off_start);
                        if (!parent) {
-                               binder_user_error("%d:%d got transaction with invalid parent offset or type\n",
-                                                 proc->pid, thread->pid);
+                               binder_user_error("%d:%d(%s:%s) got transaction with invalid parent offset or type\n",
+                                                 proc->pid, thread->pid, proc->tsk->comm, thread->task->comm);
                                return_error = BR_FAILED_REPLY;
                                return_error_param = -EINVAL;
                                return_error_line = __LINE__;
@@ -3262,8 +3403,8 @@ static void binder_transaction(struct binder_proc *proc,
                                                   parent, fda->parent_offset,
                                                   last_fixup_obj,
                                                   last_fixup_min_off)) {
-                               binder_user_error("%d:%d got transaction with out-of-order buffer fixup\n",
-                                                 proc->pid, thread->pid);
+                               binder_user_error("%d:%d(%s:%s) got transaction with out-of-order buffer fixup\n",
+                                                 proc->pid, thread->pid, proc->tsk->comm, thread->task->comm);
                                return_error = BR_FAILED_REPLY;
                                return_error_param = -EINVAL;
                                return_error_line = __LINE__;
@@ -3287,8 +3428,8 @@ static void binder_transaction(struct binder_proc *proc,
                        size_t buf_left = sg_buf_end - sg_bufp;
 
                        if (bp->length > buf_left) {
-                               binder_user_error("%d:%d got transaction with too large buffer\n",
-                                                 proc->pid, thread->pid);
+                               binder_user_error("%d:%d(%s:%s) got transaction with too large buffer\n",
+                                                 proc->pid, thread->pid, proc->tsk->comm, thread->task->comm);
                                return_error = BR_FAILED_REPLY;
                                return_error_param = -EINVAL;
                                return_error_line = __LINE__;
@@ -3297,8 +3438,8 @@ static void binder_transaction(struct binder_proc *proc,
                        if (copy_from_user(sg_bufp,
                                           (const void __user *)(uintptr_t)
                                           bp->buffer, bp->length)) {
-                               binder_user_error("%d:%d got transaction with invalid offsets ptr\n",
-                                                 proc->pid, thread->pid);
+                               binder_user_error("%d:%d(%s:%s) got transaction with invalid offsets ptr\n",
+                                                 proc->pid, thread->pid, proc->tsk->comm, thread->task->comm);
                                return_error_param = -EFAULT;
                                return_error = BR_FAILED_REPLY;
                                return_error_line = __LINE__;
@@ -3324,8 +3465,8 @@ static void binder_transaction(struct binder_proc *proc,
                        last_fixup_min_off = 0;
                } break;
                default:
-                       binder_user_error("%d:%d got transaction with invalid object type, %x\n",
-                               proc->pid, thread->pid, hdr->type);
+                       binder_user_error("%d:%d(%s:%s) got transaction with invalid object type, %x\n",
+                               proc->pid, thread->pid, proc->tsk->comm, thread->task->comm, hdr->type);
                        return_error = BR_FAILED_REPLY;
                        return_error_param = -EINVAL;
                        return_error_line = __LINE__;
@@ -3407,6 +3548,9 @@ err_copy_data_failed:
        t->buffer->transaction = NULL;
        binder_alloc_free_buf(&target_proc->alloc, t->buffer);
 err_binder_alloc_buf_failed:
+       if (secctx)
+               security_release_secctx(secctx, secctx_sz);
+err_get_secctx_failed:
        kfree(tcomplete);
        binder_stats_deleted(BINDER_STAT_TRANSACTION_COMPLETE);
 err_alloc_tcomplete_failed:
@@ -3427,8 +3571,9 @@ err_invalid_target_handle:
        }
 
        binder_debug(BINDER_DEBUG_FAILED_TRANSACTION,
-                    "%d:%d transaction failed %d/%d, size %lld-%lld line %d\n",
-                    proc->pid, thread->pid, return_error, return_error_param,
+                    "%d:%d(%s:%s) transaction failed %d/%d, size %lld-%lld line %d\n",
+                    proc->pid, thread->pid, proc->tsk->comm, thread->task->comm,
+                    return_error, return_error_param,
                     (u64)tr->data_size, (u64)tr->offsets_size,
                     return_error_line);
 
@@ -3438,6 +3583,9 @@ err_invalid_target_handle:
                e->return_error = return_error;
                e->return_error_param = return_error_param;
                e->return_error_line = return_error_line;
+#ifdef CONFIG_DEBUG_SNAPSHOT_BINDER
+               dss_binder_transaction_failed(reply, e, proc->tsk->comm, thread->task->comm, tr->flags, tr->code);
+#endif
                fe = binder_transaction_log_add(&binder_transaction_log_failed);
                *fe = *e;
                /*
@@ -3515,8 +3663,9 @@ static int binder_thread_write(struct binder_proc *proc,
                                                proc, target, increment, strong,
                                                &rdata);
                        if (!ret && rdata.desc != target) {
-                               binder_user_error("%d:%d tried to acquire reference to desc %d, got %d instead\n",
-                                       proc->pid, thread->pid,
+                               binder_user_error("%d:%d(%s:%s) tried to acquire reference to"\
+                                       " desc %d, got %d instead\n",
+                                       proc->pid, thread->pid, proc->tsk->comm, thread->task->comm,
                                        target, rdata.desc);
                        }
                        switch (cmd) {
@@ -3535,15 +3684,15 @@ static int binder_thread_write(struct binder_proc *proc,
                                break;
                        }
                        if (ret) {
-                               binder_user_error("%d:%d %s %d refcount change on invalid ref %d ret %d\n",
-                                       proc->pid, thread->pid, debug_string,
-                                       strong, target, ret);
+                               binder_user_error("%d:%d(%s:%s) %s %d refcount change on invalid ref %d ret %d\n",
+                                       proc->pid, thread->pid, proc->tsk->comm, thread->task->comm,
+                                       debug_string, strong, target, ret);
                                break;
                        }
                        binder_debug(BINDER_DEBUG_USER_REFS,
-                                    "%d:%d %s ref %d desc %d s %d w %d\n",
-                                    proc->pid, thread->pid, debug_string,
-                                    rdata.debug_id, rdata.desc, rdata.strong,
+                                    "%d:%d(%s:%s) %s ref %d desc %d s %d w %d\n",
+                                    proc->pid, thread->pid, proc->tsk->comm, thread->task->comm,
+                                    debug_string, rdata.debug_id, rdata.desc, rdata.strong,
                                     rdata.weak);
                        break;
                }
@@ -3562,8 +3711,8 @@ static int binder_thread_write(struct binder_proc *proc,
                        ptr += sizeof(binder_uintptr_t);
                        node = binder_get_node(proc, node_ptr);
                        if (node == NULL) {
-                               binder_user_error("%d:%d %s u%016llx no match\n",
-                                       proc->pid, thread->pid,
+                               binder_user_error("%d:%d(%s:%s) %s u%016llx no match\n",
+                                       proc->pid, thread->pid, proc->tsk->comm, thread->task->comm,
                                        cmd == BC_INCREFS_DONE ?
                                        "BC_INCREFS_DONE" :
                                        "BC_ACQUIRE_DONE",
@@ -3571,8 +3720,9 @@ static int binder_thread_write(struct binder_proc *proc,
                                break;
                        }
                        if (cookie != node->cookie) {
-                               binder_user_error("%d:%d %s u%016llx node %d cookie mismatch %016llx != %016llx\n",
-                                       proc->pid, thread->pid,
+                               binder_user_error("%d:%d(%s:%s) %s u%016llx node %d cookie mismatch"\
+                                       " %016llx != %016llx\n",
+                                       proc->pid, thread->pid, proc->tsk->comm, thread->task->comm,
                                        cmd == BC_INCREFS_DONE ?
                                        "BC_INCREFS_DONE" : "BC_ACQUIRE_DONE",
                                        (u64)node_ptr, node->debug_id,
@@ -3583,8 +3733,9 @@ static int binder_thread_write(struct binder_proc *proc,
                        binder_node_inner_lock(node);
                        if (cmd == BC_ACQUIRE_DONE) {
                                if (node->pending_strong_ref == 0) {
-                                       binder_user_error("%d:%d BC_ACQUIRE_DONE node %d has no pending acquire request\n",
-                                               proc->pid, thread->pid,
+                                       binder_user_error("%d:%d(%s:%s) BC_ACQUIRE_DONE node %d"\
+                                               " has no pending acquire request\n",
+                                               proc->pid, thread->pid, proc->tsk->comm, thread->task->comm,
                                                node->debug_id);
                                        binder_node_inner_unlock(node);
                                        binder_put_node(node);
@@ -3593,8 +3744,9 @@ static int binder_thread_write(struct binder_proc *proc,
                                node->pending_strong_ref = 0;
                        } else {
                                if (node->pending_weak_ref == 0) {
-                                       binder_user_error("%d:%d BC_INCREFS_DONE node %d has no pending increfs request\n",
-                                               proc->pid, thread->pid,
+                                       binder_user_error("%d:%d(%s:%s) BC_INCREFS_DONE node %d"\
+                                               " has no pending increfs request\n",
+                                               proc->pid, thread->pid, proc->tsk->comm, thread->task->comm,
                                                node->debug_id);
                                        binder_node_inner_unlock(node);
                                        binder_put_node(node);
@@ -3606,8 +3758,8 @@ static int binder_thread_write(struct binder_proc *proc,
                                        cmd == BC_ACQUIRE_DONE, 0);
                        WARN_ON(free_node);
                        binder_debug(BINDER_DEBUG_USER_REFS,
-                                    "%d:%d %s node %d ls %d lw %d tr %d\n",
-                                    proc->pid, thread->pid,
+                                    "%d:%d(%s:%s) %s node %d ls %d lw %d tr %d\n",
+                                    proc->pid, thread->pid, proc->tsk->comm, thread->task->comm,
                                     cmd == BC_INCREFS_DONE ? "BC_INCREFS_DONE" : "BC_ACQUIRE_DONE",
                                     node->debug_id, node->local_strong_refs,
                                     node->local_weak_refs, node->tmp_refs);
@@ -3632,19 +3784,23 @@ static int binder_thread_write(struct binder_proc *proc,
 
                        buffer = binder_alloc_prepare_to_free(&proc->alloc,
                                                              data_ptr);
-                       if (buffer == NULL) {
-                               binder_user_error("%d:%d BC_FREE_BUFFER u%016llx no match\n",
-                                       proc->pid, thread->pid, (u64)data_ptr);
-                               break;
-                       }
-                       if (!buffer->allow_user_free) {
-                               binder_user_error("%d:%d BC_FREE_BUFFER u%016llx matched unreturned buffer\n",
-                                       proc->pid, thread->pid, (u64)data_ptr);
+                       if (IS_ERR_OR_NULL(buffer)) {
+                               if (PTR_ERR(buffer) == -EPERM) {
+                                       binder_user_error(
+                                               "%d:%d(%s:%s) BC_FREE_BUFFER u%016llx matched unreturned or currently freeing buffer\n",
+                                               proc->pid, thread->pid, proc->tsk->comm, thread->task->comm,
+                                               (u64)data_ptr);
+                               } else {
+                                       binder_user_error(
+                                               "%d:%d(%s:%s) BC_FREE_BUFFER u%016llx no match\n",
+                                               proc->pid, thread->pid, proc->tsk->comm, thread->task->comm,
+                                               (u64)data_ptr);
+                               }
                                break;
                        }
                        binder_debug(BINDER_DEBUG_FREE_BUFFER,
-                                    "%d:%d BC_FREE_BUFFER u%016llx found buffer %d for %s transaction\n",
-                                    proc->pid, thread->pid, (u64)data_ptr,
+                                    "%d:%d(%s:%s) BC_FREE_BUFFER u%016llx found buffer %d for %s transaction\n",
+                                    proc->pid, thread->pid, proc->tsk->comm, thread->task->comm, (u64)data_ptr,
                                     buffer->debug_id,
                                     buffer->transaction ? "active" : "finished");
 
@@ -3702,17 +3858,18 @@ static int binder_thread_write(struct binder_proc *proc,
 
                case BC_REGISTER_LOOPER:
                        binder_debug(BINDER_DEBUG_THREADS,
-                                    "%d:%d BC_REGISTER_LOOPER\n",
-                                    proc->pid, thread->pid);
+                                    "%d:%d(%s:%s) BC_REGISTER_LOOPER\n",
+                                    proc->pid, thread->pid, proc->tsk->comm, thread->task->comm);
                        binder_inner_proc_lock(proc);
                        if (thread->looper & BINDER_LOOPER_STATE_ENTERED) {
                                thread->looper |= BINDER_LOOPER_STATE_INVALID;
-                               binder_user_error("%d:%d ERROR: BC_REGISTER_LOOPER called after BC_ENTER_LOOPER\n",
-                                       proc->pid, thread->pid);
+                               binder_user_error("%d:%d(%s:%s) ERROR: BC_REGISTER_LOOPER"\
+                                       " called after BC_ENTER_LOOPER\n",
+                                       proc->pid, thread->pid, proc->tsk->comm, thread->task->comm);
                        } else if (proc->requested_threads == 0) {
                                thread->looper |= BINDER_LOOPER_STATE_INVALID;
-                               binder_user_error("%d:%d ERROR: BC_REGISTER_LOOPER called without request\n",
-                                       proc->pid, thread->pid);
+                               binder_user_error("%d:%d(%s:%s) ERROR: BC_REGISTER_LOOPER called without request\n",
+                                       proc->pid, thread->pid, proc->tsk->comm, thread->task->comm);
                        } else {
                                proc->requested_threads--;
                                proc->requested_threads_started++;
@@ -3722,19 +3879,20 @@ static int binder_thread_write(struct binder_proc *proc,
                        break;
                case BC_ENTER_LOOPER:
                        binder_debug(BINDER_DEBUG_THREADS,
-                                    "%d:%d BC_ENTER_LOOPER\n",
-                                    proc->pid, thread->pid);
+                                    "%d:%d(%s:%s) BC_ENTER_LOOPER\n",
+                                    proc->pid, thread->pid, proc->tsk->comm, thread->task->comm);
                        if (thread->looper & BINDER_LOOPER_STATE_REGISTERED) {
                                thread->looper |= BINDER_LOOPER_STATE_INVALID;
-                               binder_user_error("%d:%d ERROR: BC_ENTER_LOOPER called after BC_REGISTER_LOOPER\n",
-                                       proc->pid, thread->pid);
+                               binder_user_error("%d:%d(%s:%s) ERROR: BC_ENTER_LOOPER"\
+                                       " called after BC_REGISTER_LOOPER\n",
+                                       proc->pid, thread->pid, proc->tsk->comm, thread->task->comm);
                        }
                        thread->looper |= BINDER_LOOPER_STATE_ENTERED;
                        break;
                case BC_EXIT_LOOPER:
                        binder_debug(BINDER_DEBUG_THREADS,
-                                    "%d:%d BC_EXIT_LOOPER\n",
-                                    proc->pid, thread->pid);
+                                    "%d:%d(%s:%s) BC_EXIT_LOOPER\n",
+                                    proc->pid, thread->pid, proc->tsk->comm, thread->task->comm);
                        thread->looper |= BINDER_LOOPER_STATE_EXITED;
                        break;
 
@@ -3766,16 +3924,16 @@ static int binder_thread_write(struct binder_proc *proc,
                                                &thread->return_error.work);
                                        binder_debug(
                                                BINDER_DEBUG_FAILED_TRANSACTION,
-                                               "%d:%d BC_REQUEST_DEATH_NOTIFICATION failed\n",
-                                               proc->pid, thread->pid);
+                                               "%d:%d(%s:%s) BC_REQUEST_DEATH_NOTIFICATION failed\n",
+                                               proc->pid, thread->pid, proc->tsk->comm, thread->task->comm);
                                        break;
                                }
                        }
                        binder_proc_lock(proc);
                        ref = binder_get_ref_olocked(proc, target, false);
                        if (ref == NULL) {
-                               binder_user_error("%d:%d %s invalid ref %d\n",
-                                       proc->pid, thread->pid,
+                               binder_user_error("%d:%d(%s:%s) %s invalid ref %d\n",
+                                       proc->pid, thread->pid, proc->tsk->comm, thread->task->comm,
                                        cmd == BC_REQUEST_DEATH_NOTIFICATION ?
                                        "BC_REQUEST_DEATH_NOTIFICATION" :
                                        "BC_CLEAR_DEATH_NOTIFICATION",
@@ -3786,8 +3944,8 @@ static int binder_thread_write(struct binder_proc *proc,
                        }
 
                        binder_debug(BINDER_DEBUG_DEATH_NOTIFICATION,
-                                    "%d:%d %s %016llx ref %d desc %d s %d w %d for node %d\n",
-                                    proc->pid, thread->pid,
+                                    "%d:%d(%s:%s) %s %016llx ref %d desc %d s %d w %d for node %d\n",
+                                    proc->pid, thread->pid, proc->tsk->comm, thread->task->comm,
                                     cmd == BC_REQUEST_DEATH_NOTIFICATION ?
                                     "BC_REQUEST_DEATH_NOTIFICATION" :
                                     "BC_CLEAR_DEATH_NOTIFICATION",
@@ -3798,8 +3956,9 @@ static int binder_thread_write(struct binder_proc *proc,
                        binder_node_lock(ref->node);
                        if (cmd == BC_REQUEST_DEATH_NOTIFICATION) {
                                if (ref->death) {
-                                       binder_user_error("%d:%d BC_REQUEST_DEATH_NOTIFICATION death notification already set\n",
-                                               proc->pid, thread->pid);
+                                       binder_user_error("%d:%d(%s:%s) BC_REQUEST_DEATH_NOTIFICATION"\
+                                               " death notification already set\n",
+                                               proc->pid, thread->pid, proc->tsk->comm, thread->task->comm);
                                        binder_node_unlock(ref->node);
                                        binder_proc_unlock(proc);
                                        kfree(death);
@@ -3820,16 +3979,18 @@ static int binder_thread_write(struct binder_proc *proc,
                                }
                        } else {
                                if (ref->death == NULL) {
-                                       binder_user_error("%d:%d BC_CLEAR_DEATH_NOTIFICATION death notification not active\n",
-                                               proc->pid, thread->pid);
+                                       binder_user_error("%d:%d(%s:%s) BC_CLEAR_DEATH_NOTIFICATION"\
+                                               " death notification not active\n",
+                                               proc->pid, thread->pid, proc->tsk->comm, thread->task->comm);
                                        binder_node_unlock(ref->node);
                                        binder_proc_unlock(proc);
                                        break;
                                }
                                death = ref->death;
                                if (death->cookie != cookie) {
-                                       binder_user_error("%d:%d BC_CLEAR_DEATH_NOTIFICATION death notification cookie mismatch %016llx != %016llx\n",
-                                               proc->pid, thread->pid,
+                                       binder_user_error("%d:%d(%s:%s) BC_CLEAR_DEATH_NOTIFICATION"\
+                                               " death notification cookie mismatch %016llx != %016llx\n",
+                                               proc->pid, thread->pid, proc->tsk->comm, thread->task->comm,
                                                (u64)death->cookie,
                                                (u64)cookie);
                                        binder_node_unlock(ref->node);
@@ -3885,12 +4046,12 @@ static int binder_thread_write(struct binder_proc *proc,
                                }
                        }
                        binder_debug(BINDER_DEBUG_DEAD_BINDER,
-                                    "%d:%d BC_DEAD_BINDER_DONE %016llx found %pK\n",
-                                    proc->pid, thread->pid, (u64)cookie,
+                                    "%d:%d(%s:%s) BC_DEAD_BINDER_DONE %016llx found %pK\n",
+                                    proc->pid, thread->pid, proc->tsk->comm, thread->task->comm, (u64)cookie,
                                     death);
                        if (death == NULL) {
-                               binder_user_error("%d:%d BC_DEAD_BINDER_DONE %016llx not found\n",
-                                       proc->pid, thread->pid, (u64)cookie);
+                               binder_user_error("%d:%d(%s:%s) BC_DEAD_BINDER_DONE %016llx not found\n",
+                                       proc->pid, thread->pid, proc->tsk->comm, thread->task->comm, (u64)cookie);
                                binder_inner_proc_unlock(proc);
                                break;
                        }
@@ -3913,8 +4074,8 @@ static int binder_thread_write(struct binder_proc *proc,
                } break;
 
                default:
-                       pr_err("%d:%d unknown command %d\n",
-                              proc->pid, thread->pid, cmd);
+                       pr_err("%d:%d(%s:%s) unknown command %d\n",
+                              proc->pid, thread->pid, proc->tsk->comm, thread->task->comm, cmd);
                        return -EINVAL;
                }
                *consumed = ptr - buffer;
@@ -3956,8 +4117,9 @@ static int binder_put_node_cmd(struct binder_proc *proc,
        ptr += sizeof(binder_uintptr_t);
 
        binder_stat_br(proc, thread, cmd);
-       binder_debug(BINDER_DEBUG_USER_REFS, "%d:%d %s %d u%016llx c%016llx\n",
-                    proc->pid, thread->pid, cmd_name, node_debug_id,
+       binder_debug(BINDER_DEBUG_USER_REFS, "%d:%d(%s:%s) %s %d u%016llx c%016llx\n",
+                    proc->pid, thread->pid, proc->tsk->comm, thread->task->comm,
+                    cmd_name, node_debug_id,
                     (u64)node_ptr, (u64)node_cookie);
 
        *ptrp = ptr;
@@ -4027,8 +4189,9 @@ retry:
        if (wait_for_proc_work) {
                if (!(thread->looper & (BINDER_LOOPER_STATE_REGISTERED |
                                        BINDER_LOOPER_STATE_ENTERED))) {
-                       binder_user_error("%d:%d ERROR: Thread waiting for process work before calling BC_REGISTER_LOOPER or BC_ENTER_LOOPER (state %x)\n",
-                               proc->pid, thread->pid, thread->looper);
+                       binder_user_error("%d:%d(%s:%s) ERROR: Thread waiting for process work"\
+                               " before calling BC_REGISTER_LOOPER or BC_ENTER_LOOPER (state %x)\n",
+                               proc->pid, thread->pid, proc->tsk->comm, thread->task->comm, thread->looper);
                        wait_event_interruptible(binder_user_error_wait,
                                                 binder_stop_on_user_error < 2);
                }
@@ -4049,11 +4212,13 @@ retry:
 
        while (1) {
                uint32_t cmd;
-               struct binder_transaction_data tr;
+               struct binder_transaction_data_secctx tr;
+               struct binder_transaction_data *trd = &tr.transaction_data;
                struct binder_work *w = NULL;
                struct list_head *list = NULL;
                struct binder_transaction *t = NULL;
                struct binder_thread *t_from;
+               size_t trsize = sizeof(*trd);
 
                binder_inner_proc_lock(proc);
                if (!binder_worklist_empty_ilocked(&thread->todo))
@@ -4106,8 +4271,8 @@ retry:
 
                        binder_stat_br(proc, thread, cmd);
                        binder_debug(BINDER_DEBUG_TRANSACTION_COMPLETE,
-                                    "%d:%d BR_TRANSACTION_COMPLETE\n",
-                                    proc->pid, thread->pid);
+                                    "%d:%d(%s:%s) BR_TRANSACTION_COMPLETE\n",
+                                    proc->pid, thread->pid, proc->tsk->comm, thread->task->comm);
                        kfree(w);
                        binder_stats_deleted(BINDER_STAT_TRANSACTION_COMPLETE);
                } break;
@@ -4146,8 +4311,8 @@ retry:
                                node->has_weak_ref = 0;
                        if (!weak && !strong) {
                                binder_debug(BINDER_DEBUG_INTERNAL_REFS,
-                                            "%d:%d node %d u%016llx c%016llx deleted\n",
-                                            proc->pid, thread->pid,
+                                            "%d:%d(%s:%s) node %d u%016llx c%016llx deleted\n",
+                                            proc->pid, thread->pid, proc->tsk->comm, thread->task->comm,
                                             node_debug_id,
                                             (u64)node_ptr,
                                             (u64)node_cookie);
@@ -4190,8 +4355,8 @@ retry:
                                                BR_DECREFS, "BR_DECREFS");
                        if (orig_ptr == ptr)
                                binder_debug(BINDER_DEBUG_INTERNAL_REFS,
-                                            "%d:%d node %d u%016llx c%016llx state unchanged\n",
-                                            proc->pid, thread->pid,
+                                            "%d:%d(%s:%s) node %d u%016llx c%016llx state unchanged\n",
+                                            proc->pid, thread->pid, proc->tsk->comm, thread->task->comm,
                                             node_debug_id,
                                             (u64)node_ptr,
                                             (u64)node_cookie);
@@ -4213,8 +4378,8 @@ retry:
                        cookie = death->cookie;
 
                        binder_debug(BINDER_DEBUG_DEATH_NOTIFICATION,
-                                    "%d:%d %s %016llx\n",
-                                     proc->pid, thread->pid,
+                                    "%d:%d(%s:%s) %s %016llx\n",
+                                     proc->pid, thread->pid, proc->tsk->comm, thread->task->comm,
                                      cmd == BR_DEAD_BINDER ?
                                      "BR_DEAD_BINDER" :
                                      "BR_CLEAR_DEATH_NOTIFICATION_DONE",
@@ -4249,41 +4414,47 @@ retry:
                        struct binder_node *target_node = t->buffer->target_node;
                        struct binder_priority node_prio;
 
-                       tr.target.ptr = target_node->ptr;
-                       tr.cookie =  target_node->cookie;
+                       trd->target.ptr = target_node->ptr;
+                       trd->cookie =  target_node->cookie;
                        node_prio.sched_policy = target_node->sched_policy;
                        node_prio.prio = target_node->min_priority;
                        binder_transaction_priority(current, t, node_prio,
                                                    target_node->inherit_rt);
                        cmd = BR_TRANSACTION;
                } else {
-                       tr.target.ptr = 0;
-                       tr.cookie = 0;
+                       trd->target.ptr = 0;
+                       trd->cookie = 0;
                        cmd = BR_REPLY;
                }
-               tr.code = t->code;
-               tr.flags = t->flags;
-               tr.sender_euid = from_kuid(current_user_ns(), t->sender_euid);
+               trd->code = t->code;
+               trd->flags = t->flags;
+               trd->sender_euid = from_kuid(current_user_ns(), t->sender_euid);
 
                t_from = binder_get_txn_from(t);
                if (t_from) {
                        struct task_struct *sender = t_from->proc->tsk;
 
-                       tr.sender_pid = task_tgid_nr_ns(sender,
-                                                       task_active_pid_ns(current));
+                       trd->sender_pid =
+                               task_tgid_nr_ns(sender,
+                                               task_active_pid_ns(current));
                } else {
-                       tr.sender_pid = 0;
+                       trd->sender_pid = 0;
                }
 
-               tr.data_size = t->buffer->data_size;
-               tr.offsets_size = t->buffer->offsets_size;
-               tr.data.ptr.buffer = (binder_uintptr_t)
+               trd->data_size = t->buffer->data_size;
+               trd->offsets_size = t->buffer->offsets_size;
+               trd->data.ptr.buffer = (binder_uintptr_t)
                        ((uintptr_t)t->buffer->data +
                        binder_alloc_get_user_buffer_offset(&proc->alloc));
-               tr.data.ptr.offsets = tr.data.ptr.buffer +
+               trd->data.ptr.offsets = trd->data.ptr.buffer +
                                        ALIGN(t->buffer->data_size,
                                            sizeof(void *));
 
+               tr.secctx = t->security_ctx;
+               if (t->security_ctx) {
+                       cmd = BR_TRANSACTION_SEC_CTX;
+                       trsize = sizeof(tr);
+               }
                if (put_user(cmd, (uint32_t __user *)ptr)) {
                        if (t_from)
                                binder_thread_dec_tmpref(t_from);
@@ -4294,7 +4465,7 @@ retry:
                        return -EFAULT;
                }
                ptr += sizeof(uint32_t);
-               if (copy_to_user(ptr, &tr, sizeof(tr))) {
+               if (copy_to_user(ptr, &tr, trsize)) {
                        if (t_from)
                                binder_thread_dec_tmpref(t_from);
 
@@ -4303,24 +4474,32 @@ retry:
 
                        return -EFAULT;
                }
-               ptr += sizeof(tr);
+               ptr += trsize;
 
+#ifdef CONFIG_DEBUG_SNAPSHOT_BINDER
+               dss_binder_transaction_received(t, thread);
+#endif
                trace_binder_transaction_received(t);
                binder_stat_br(proc, thread, cmd);
                binder_debug(BINDER_DEBUG_TRANSACTION,
-                            "%d:%d %s %d %d:%d, cmd %d size %zd-%zd ptr %016llx-%016llx\n",
-                            proc->pid, thread->pid,
+                            "%d:%d(%s:%s) %s %d %d:%d(%s:%s), cmd %d size %zd-%zd ptr %016llx-%016llx\n",
+                            proc->pid, thread->pid, proc->tsk->comm, thread->task->comm,
                             (cmd == BR_TRANSACTION) ? "BR_TRANSACTION" :
-                            "BR_REPLY",
+                               (cmd == BR_TRANSACTION_SEC_CTX) ?
+                                    "BR_TRANSACTION_SEC_CTX" : "BR_REPLY",
                             t->debug_id, t_from ? t_from->proc->pid : 0,
-                            t_from ? t_from->pid : 0, cmd,
+                            t_from ? t_from->pid : 0,
+                            t_from ? t_from->proc->tsk->comm : "",
+                            t_from ? t_from->task->comm : "",
+                            cmd,
                             t->buffer->data_size, t->buffer->offsets_size,
-                            (u64)tr.data.ptr.buffer, (u64)tr.data.ptr.offsets);
+                            (u64)trd->data.ptr.buffer,
+                            (u64)trd->data.ptr.offsets);
 
                if (t_from)
                        binder_thread_dec_tmpref(t_from);
                t->buffer->allow_user_free = 1;
-               if (cmd == BR_TRANSACTION && !(t->flags & TF_ONE_WAY)) {
+               if (cmd != BR_REPLY && !(t->flags & TF_ONE_WAY)) {
                        binder_inner_proc_lock(thread->proc);
                        t->to_parent = thread->transaction_stack;
                        t->to_thread = thread;
@@ -4345,8 +4524,8 @@ done:
                proc->requested_threads++;
                binder_inner_proc_unlock(proc);
                binder_debug(BINDER_DEBUG_THREADS,
-                            "%d:%d BR_SPAWN_LOOPER\n",
-                            proc->pid, thread->pid);
+                            "%d:%d(%s:%s) BR_SPAWN_LOOPER\n",
+                            proc->pid, thread->pid, proc->tsk->comm, thread->task->comm);
                if (put_user(BR_SPAWN_LOOPER, (uint32_t __user *)buffer))
                        return -EFAULT;
                binder_stat_br(proc, thread, BR_SPAWN_LOOPER);
@@ -4522,8 +4701,8 @@ static int binder_thread_release(struct binder_proc *proc,
                last_t = t;
                active_transactions++;
                binder_debug(BINDER_DEBUG_DEAD_TRANSACTION,
-                            "release %d:%d transaction %d %s, still active\n",
-                             proc->pid, thread->pid,
+                            "release %d:%d(%s:%s) transaction %d %s, still active\n",
+                             proc->pid, thread->pid, proc->tsk->comm, thread->task->comm,
                             t->debug_id,
                             (t->to_thread == thread) ? "in" : "out");
 
@@ -4618,8 +4797,8 @@ static int binder_ioctl_write_read(struct file *filp,
                goto out;
        }
        binder_debug(BINDER_DEBUG_READ_WRITE,
-                    "%d:%d write %lld at %016llx, read %lld at %016llx\n",
-                    proc->pid, thread->pid,
+                    "%d:%d(%s:%s) write %lld at %016llx, read %lld at %016llx\n",
+                    proc->pid, thread->pid, proc->tsk->comm, thread->task->comm,
                     (u64)bwr.write_size, (u64)bwr.write_buffer,
                     (u64)bwr.read_size, (u64)bwr.read_buffer);
 
@@ -4653,8 +4832,8 @@ static int binder_ioctl_write_read(struct file *filp,
                }
        }
        binder_debug(BINDER_DEBUG_READ_WRITE,
-                    "%d:%d wrote %lld of %lld, read return %lld of %lld\n",
-                    proc->pid, thread->pid,
+                    "%d:%d(%s:%s) wrote %lld of %lld, read return %lld of %lld\n",
+                    proc->pid, thread->pid, proc->tsk->comm, thread->task->comm,
                     (u64)bwr.write_consumed, (u64)bwr.write_size,
                     (u64)bwr.read_consumed, (u64)bwr.read_size);
        if (copy_to_user(ubuf, &bwr, sizeof(bwr))) {
@@ -4665,7 +4844,8 @@ out:
        return ret;
 }
 
-static int binder_ioctl_set_ctx_mgr(struct file *filp)
+static int binder_ioctl_set_ctx_mgr(struct file *filp,
+                                   struct flat_binder_object *fbo)
 {
        int ret = 0;
        struct binder_proc *proc = filp->private_data;
@@ -4694,7 +4874,7 @@ static int binder_ioctl_set_ctx_mgr(struct file *filp)
        } else {
                context->binder_context_mgr_uid = curr_euid;
        }
-       new_node = binder_new_node(proc, NULL);
+       new_node = binder_new_node(proc, fbo);
        if (!new_node) {
                ret = -ENOMEM;
                goto out;
@@ -4781,14 +4961,26 @@ static long binder_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
                binder_inner_proc_unlock(proc);
                break;
        }
+       case BINDER_SET_CONTEXT_MGR_EXT: {
+               struct flat_binder_object fbo;
+
+               if (copy_from_user(&fbo, ubuf, sizeof(fbo))) {
+                       ret = -EINVAL;
+                       goto err;
+               }
+               ret = binder_ioctl_set_ctx_mgr(filp, &fbo);
+               if (ret)
+                       goto err;
+               break;
+       }
        case BINDER_SET_CONTEXT_MGR:
-               ret = binder_ioctl_set_ctx_mgr(filp);
+               ret = binder_ioctl_set_ctx_mgr(filp, NULL);
                if (ret)
                        goto err;
                break;
        case BINDER_THREAD_EXIT:
-               binder_debug(BINDER_DEBUG_THREADS, "%d:%d exit\n",
-                            proc->pid, thread->pid);
+               binder_debug(BINDER_DEBUG_THREADS, "%d:%d(%s:%s) exit\n",
+                            proc->pid, thread->pid, proc->tsk->comm, thread->task->comm);
                binder_thread_release(proc, thread);
                thread = NULL;
                break;
@@ -4834,7 +5026,8 @@ err:
                thread->looper_need_return = false;
        wait_event_interruptible(binder_user_error_wait, binder_stop_on_user_error < 2);
        if (ret && ret != -ERESTARTSYS)
-               pr_info("%d:%d ioctl %x %lx returned %d\n", proc->pid, current->pid, cmd, arg, ret);
+               pr_info("%d:%d(%s:%s) ioctl %x %lx returned %d\n", proc->pid, current->pid,
+                   proc->tsk->comm, current->comm, cmd, arg, ret);
 err_unlocked:
        trace_binder_ioctl_done(ret);
        return ret;
@@ -4845,8 +5038,8 @@ static void binder_vma_open(struct vm_area_struct *vma)
        struct binder_proc *proc = vma->vm_private_data;
 
        binder_debug(BINDER_DEBUG_OPEN_CLOSE,
-                    "%d open vm area %lx-%lx (%ld K) vma %lx pagep %lx\n",
-                    proc->pid, vma->vm_start, vma->vm_end,
+                    "%d(%s) open vm area %lx-%lx (%ld K) vma %lx pagep %lx\n",
+                    proc->pid, proc->tsk->comm, vma->vm_start, vma->vm_end,
                     (vma->vm_end - vma->vm_start) / SZ_1K, vma->vm_flags,
                     (unsigned long)pgprot_val(vma->vm_page_prot));
 }
@@ -4856,8 +5049,8 @@ static void binder_vma_close(struct vm_area_struct *vma)
        struct binder_proc *proc = vma->vm_private_data;
 
        binder_debug(BINDER_DEBUG_OPEN_CLOSE,
-                    "%d close vm area %lx-%lx (%ld K) vma %lx pagep %lx\n",
-                    proc->pid, vma->vm_start, vma->vm_end,
+                    "%d(%s) close vm area %lx-%lx (%ld K) vma %lx pagep %lx\n",
+                    proc->pid, proc->tsk->comm, vma->vm_start, vma->vm_end,
                     (vma->vm_end - vma->vm_start) / SZ_1K, vma->vm_flags,
                     (unsigned long)pgprot_val(vma->vm_page_prot));
        binder_alloc_vma_close(&proc->alloc);
@@ -4888,8 +5081,8 @@ static int binder_mmap(struct file *filp, struct vm_area_struct *vma)
                vma->vm_end = vma->vm_start + SZ_4M;
 
        binder_debug(BINDER_DEBUG_OPEN_CLOSE,
-                    "%s: %d %lx-%lx (%ld K) vma %lx pagep %lx\n",
-                    __func__, proc->pid, vma->vm_start, vma->vm_end,
+                    "%s: %d(%s) %lx-%lx (%ld K) vma %lx pagep %lx\n",
+                    __func__, proc->pid, proc->tsk->comm, vma->vm_start, vma->vm_end,
                     (vma->vm_end - vma->vm_start) / SZ_1K, vma->vm_flags,
                     (unsigned long)pgprot_val(vma->vm_page_prot));
 
@@ -4898,21 +5091,25 @@ static int binder_mmap(struct file *filp, struct vm_area_struct *vma)
                failure_string = "bad vm_flags";
                goto err_bad_arg;
        }
-       vma->vm_flags = (vma->vm_flags | VM_DONTCOPY) & ~VM_MAYWRITE;
+       vma->vm_flags |= VM_DONTCOPY | VM_MIXEDMAP;
+       vma->vm_flags &= ~VM_MAYWRITE;
+
        vma->vm_ops = &binder_vm_ops;
        vma->vm_private_data = proc;
 
        ret = binder_alloc_mmap_handler(&proc->alloc, vma);
-       if (ret)
-               return ret;
+       if (ret) {
+               failure_string = "";
+               goto err_bad_arg;
+       }
        mutex_lock(&proc->files_lock);
        proc->files = get_files_struct(current);
        mutex_unlock(&proc->files_lock);
        return 0;
 
 err_bad_arg:
-       pr_err("%s: %d %lx-%lx %s failed %d\n", __func__,
-              proc->pid, vma->vm_start, vma->vm_end, failure_string, ret);
+       pr_err("%s: %d(%s) %lx-%lx %s failed %d\n", __func__,
+               proc->pid, proc->tsk->comm, vma->vm_start, vma->vm_end, failure_string, ret);
        return ret;
 }
 
@@ -4921,8 +5118,9 @@ static int binder_open(struct inode *nodp, struct file *filp)
        struct binder_proc *proc;
        struct binder_device *binder_dev;
 
-       binder_debug(BINDER_DEBUG_OPEN_CLOSE, "%s: %d:%d\n", __func__,
-                    current->group_leader->pid, current->pid);
+       binder_debug(BINDER_DEBUG_OPEN_CLOSE, "%s: %d:%d (%s:%s)\n", __func__,
+                    current->group_leader->pid, current->pid,
+                    current->group_leader->comm, current->comm);
 
        proc = kzalloc(sizeof(*proc), GFP_KERNEL);
        if (proc == NULL)
@@ -5003,7 +5201,7 @@ static void binder_deferred_flush(struct binder_proc *proc)
        binder_inner_proc_unlock(proc);
 
        binder_debug(BINDER_DEBUG_OPEN_CLOSE,
-                    "binder_flush: %d woke %d threads\n", proc->pid,
+                    "binder_flush: %d(%s) woke %d threads\n", proc->pid, proc->tsk->comm,
                     wake_count);
 }
 
@@ -5098,8 +5296,8 @@ static void binder_deferred_release(struct binder_proc *proc)
        if (context->binder_context_mgr_node &&
            context->binder_context_mgr_node->proc == proc) {
                binder_debug(BINDER_DEBUG_DEAD_BINDER,
-                            "%s: %d context_mgr_node gone\n",
-                            __func__, proc->pid);
+                            "%s: %d(%s) context_mgr_node gone\n",
+                            __func__, proc->pid, proc->tsk->comm);
                context->binder_context_mgr_node = NULL;
        }
        mutex_unlock(&context->context_mgr_node_lock);
@@ -5161,8 +5359,8 @@ static void binder_deferred_release(struct binder_proc *proc)
        binder_release_work(proc, &proc->delivered_death);
 
        binder_debug(BINDER_DEBUG_OPEN_CLOSE,
-                    "%s: %d threads %d, nodes %d (ref %d), refs %d, active transactions %d\n",
-                    __func__, proc->pid, threads, nodes, incoming_refs,
+                    "%s: %d(%s) threads %d, nodes %d (ref %d), refs %d, active transactions %d\n",
+                    __func__, proc->pid, proc->tsk->comm, threads, nodes, incoming_refs,
                     outgoing_refs, active_transactions);
 
        binder_proc_dec_tmpref(proc);
@@ -5234,12 +5432,16 @@ static void print_binder_transaction_ilocked(struct seq_file *m,
        spin_lock(&t->lock);
        to_proc = t->to_proc;
        seq_printf(m,
-                  "%s %d: %pK from %d:%d to %d:%d code %x flags %x pri %d:%d r%d",
+                  "%s %d: %pK from %d:%d(%s:%s) to %d:%d(%s:%s) code %x flags %x pri %d:%d r%d",
                   prefix, t->debug_id, t,
                   t->from ? t->from->proc->pid : 0,
                   t->from ? t->from->pid : 0,
+                  t->from ? t->from->proc->tsk->comm : "",
+                  t->from ? t->from->task->comm : "",
                   to_proc ? to_proc->pid : 0,
                   t->to_thread ? t->to_thread->pid : 0,
+                  to_proc ? to_proc->tsk->comm : "",
+                  t->to_thread ? t->to_thread->task->comm : "",
                   t->code, t->flags, t->priority.sched_policy,
                   t->priority.prio, t->need_reply);
        spin_unlock(&t->lock);
@@ -5319,8 +5521,8 @@ static void print_binder_thread_ilocked(struct seq_file *m,
        size_t start_pos = m->count;
        size_t header_pos;
 
-       seq_printf(m, "  thread %d: l %02x need_return %d tr %d\n",
-                       thread->pid, thread->looper,
+       seq_printf(m, "  thread %d %s: l %02x need_return %d tr %d\n",
+                       thread->pid, thread->task->comm, thread->looper,
                        thread->looper_need_return,
                        atomic_read(&thread->tmp_ref));
        header_pos = m->count;
@@ -5368,7 +5570,7 @@ static void print_binder_node_nilocked(struct seq_file *m,
        if (count) {
                seq_puts(m, " proc");
                hlist_for_each_entry(ref, &node->refs, node_entry)
-                       seq_printf(m, " %d", ref->proc->pid);
+                       seq_printf(m, " %d %s", ref->proc->pid, ref->proc->tsk->comm);
        }
        seq_puts(m, "\n");
        if (node->proc) {
@@ -5399,7 +5601,7 @@ static void print_binder_proc(struct seq_file *m,
        size_t header_pos;
        struct binder_node *last_node = NULL;
 
-       seq_printf(m, "proc %d\n", proc->pid);
+       seq_printf(m, "proc %d %s\n", proc->pid, proc->tsk->comm);
        seq_printf(m, "context %s\n", proc->context->name);
        header_pos = m->count;
 
@@ -5560,7 +5762,7 @@ static void print_binder_proc_stats(struct seq_file *m,
        size_t free_async_space =
                binder_alloc_get_free_async_space(&proc->alloc);
 
-       seq_printf(m, "proc %d\n", proc->pid);
+       seq_printf(m, "proc %d %s\n", proc->pid, proc->tsk->comm);
        seq_printf(m, "context %s\n", proc->context->name);
        count = 0;
        ready_threads = 0;