From f505d49ffd25ed062e76ffd17568d3937fcd338c Mon Sep 17 00:00:00 2001 From: Bartlomiej Zolnierkiewicz Date: Sat, 18 Apr 2009 17:42:20 +0200 Subject: [PATCH] ide: fix barriers support Freeing non-slab objects is bad and results in an oops. Fix it. Reported-and-tested-by: Andrew Price Cc: Theodore Tso Cc: "Rafael J. Wysocki" Signed-off-by: Bartlomiej Zolnierkiewicz --- drivers/ide/ide-io.c | 11 +++++++---- 1 file changed, 7 insertions(+), 4 deletions(-) diff --git a/drivers/ide/ide-io.c b/drivers/ide/ide-io.c index 2ae02b8d7f8e..35dc38d3b2c5 100644 --- a/drivers/ide/ide-io.c +++ b/drivers/ide/ide-io.c @@ -102,11 +102,14 @@ void ide_complete_cmd(ide_drive_t *drive, struct ide_cmd *cmd, u8 stat, u8 err) drive->dev_flags |= IDE_DFLAG_PARKED; } - if (rq && rq->cmd_type == REQ_TYPE_ATA_TASKFILE) - memcpy(rq->special, cmd, sizeof(*cmd)); + if (rq && rq->cmd_type == REQ_TYPE_ATA_TASKFILE) { + struct ide_cmd *orig_cmd = rq->special; - if (cmd->tf_flags & IDE_TFLAG_DYN) - kfree(cmd); + if (cmd->tf_flags & IDE_TFLAG_DYN) + kfree(orig_cmd); + else + memcpy(orig_cmd, cmd, sizeof(*cmd)); + } } /* obsolete, blk_rq_bytes() should be used instead */ -- 2.20.1