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authorAlan Cox <alan@lxorguk.ukuu.org.uk>2006-10-03 01:14:33 -0700
committerLinus Torvalds <torvalds@g5.osdl.org>2006-10-03 08:04:08 -0700
commit913759ac90a727b86da72efcfb70931f497d1cb7 (patch)
treef95e10f757e93eca8eacbf03985c09994ec4ef46 /drivers/ide/ide.c
parentb86cc29dc42203588264d917e88134bdd500b0d7 (diff)
[PATCH] ide: Fix crash on repeated reset
Michal Miroslaw reported a problem (bugzilla #7023) where a user initiated reset while the IDE layer was already resetting the channel caused a crash, and provided a rough fix. This is a slightly cleaner version of the fix which tracks the reset state and blocks further reset requests while a reset is in progress. Note this is not a security issue - random end users can't access the ioctl in question anyway. Signed-off-by: Alan Cox <alan@redhat.com> Cc: Michal Miroslaw <mirq-linux@rere.qmqm.pl> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'drivers/ide/ide.c')
-rw-r--r--drivers/ide/ide.c5
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/ide/ide.c b/drivers/ide/ide.c
index 97b162ca9885..287a66201150 100644
--- a/drivers/ide/ide.c
+++ b/drivers/ide/ide.c
@@ -1364,6 +1364,11 @@ int generic_ide_ioctl(ide_drive_t *drive, struct file *file, struct block_device
spin_lock_irqsave(&ide_lock, flags);
+ if (HWGROUP(drive)->resetting) {
+ spin_unlock_irqrestore(&ide_lock, flags);
+ return -EBUSY;
+ }
+
ide_abort(drive, "drive reset");
BUG_ON(HWGROUP(drive)->handler);