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authorAlexey Dobriyan <adobriyan@gmail.com>2008-08-22 17:40:10 +0000
committerGreg Kroah-Hartman <gregkh@suse.de>2008-09-08 04:44:17 -0700
commit13f3b97af2f88fab1e36adbc6372b184315fdda3 (patch)
treec382f4b0bdfbb61130a0269443b41585bc78c8b6 /drivers
parent5d70bbc8780b474371b555cd6eeaaafdea82efe9 (diff)
USB: cdc-acm: don't unlock acm->mutex on error path
commit 74573ee7096a4ffc2f098108d21c85801b9c7434 upstream On Wed, Jul 23, 2008 at 03:52:36PM +0300, Andrei Popa wrote: > I installed gnokii-0.6.22-r2 and gave the command "gnokii --identify" > and the kernel oopsed: > > BUG: unable to handle kernel NULL pointer dereference at 00000458 > IP: [<c0444b52>] mutex_unlock+0x0/0xb > [<c03830ae>] acm_tty_open+0x4c/0x214 Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Tested-by: Andrei Popa <andrei.popa@i-neo.ro> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/usb/class/cdc-acm.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/usb/class/cdc-acm.c b/drivers/usb/class/cdc-acm.c
index c3201affa0b6..560337aef47e 100644
--- a/drivers/usb/class/cdc-acm.c
+++ b/drivers/usb/class/cdc-acm.c
@@ -525,8 +525,8 @@ static int acm_tty_open(struct tty_struct *tty, struct file *filp)
tasklet_schedule(&acm->urb_task);
done:
-err_out:
mutex_unlock(&acm->mutex);
+err_out:
mutex_unlock(&open_mutex);
return rv;