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uprobes/x86: Fix arch_uprobe_disable_step() && UTASK_SSTEP_TRAPPED interaction
authorOleg Nesterov <oleg@redhat.com>
Sat, 8 Sep 2012 16:38:15 +0000 (18:38 +0200)
committerOleg Nesterov <oleg@redhat.com>
Sat, 15 Sep 2012 15:37:32 +0000 (17:37 +0200)
commitd6a00b35e411519d774d978cdf80e4406d01b36b
treee928315e06a4b6199d173848fac7d08301b32362tree | snapshot (tar.gz zip)
parent3a4664aa8362d9fa9110828f55afa9f9fcd7e484commit | diff
uprobes/x86: Fix arch_uprobe_disable_step() && UTASK_SSTEP_TRAPPED interaction

arch_uprobe_disable_step() should also take UTASK_SSTEP_TRAPPED into
account. In this case the probed insn was not executed, we need to
clear X86_EFLAGS_TF if it was set by us and that is all.

Again, this code will look more clean when we move it into
arch_uprobe_post_xol() and arch_uprobe_abort_xol().

Signed-off-by: Oleg Nesterov <oleg@redhat.com>
Acked-by: Srikar Dronamraju <srikar@linux.vnet.ibm.com>
arch/x86/kernel/uprobes.c diff | blob | blame | history