[patch] CIFS: double unlock in cifs_lock_add_if()
Pavel Shilovsky
piastry at etersoft.ru
Sat Oct 29 01:25:06 MDT 2011
2011/10/29 Dan Carpenter <dan.carpenter at oracle.com>:
> We unlocked "cinode->lock_mutex" twice so I've removed the first
> unlock.
>
> Signed-off-by: Dan Carpenter <dan.carpenter at oracle.com>
>
> diff --git a/fs/cifs/file.c b/fs/cifs/file.c
> index ea096ce..b8dbab8 100644
> --- a/fs/cifs/file.c
> +++ b/fs/cifs/file.c
> @@ -775,11 +775,9 @@ try_again:
> (lock->blist.next == &lock->blist));
> if (!rc)
> goto try_again;
> - else {
> - mutex_lock(&cinode->lock_mutex);
> - list_del_init(&lock->blist);
> - mutex_unlock(&cinode->lock_mutex);
> - }
> +
> + mutex_lock(&cinode->lock_mutex);
> + list_del_init(&lock->blist);
> }
>
> kfree(lock);
> --
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>
I recently posted the similar fix "CIFS: Remove extra mutex_unlock in
cifs_lock_add_if":
https://git.samba.org/sfrench/?p=sfrench/cifs-2.6.git;a=commitdiff;h=d12799b4c3c4d1e65d7fdbb5d91538c92d6863dd;hp=f362f98e7c445643d27c610bb7a86b79727b592e
Anyway, thanks for catching this!
--
Best regards,
Pavel Shilovsky.
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