Gitweb:
http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=ce5246b972f7514af899a63c0faf831d05ed5ee1
Commit: ce5246b972f7514af899a63c0faf831d05ed5ee1
Parent: 755b5eb8bac90b35dc901465a06081aaad94e9ae
Author: David Teigland <[EMAIL PROTECTED]>
AuthorDate: Mon Jan 14 15:48:58 2008 -0600
Committer: David Teigland <[EMAIL PROTECTED]>
CommitDate: Wed Jan 30 11:04:42 2008 -0600
dlm: fix possible use-after-free
The dlm_put_lkb() can free the lkb and its associated ua structure,
so we can't depend on using the ua struct after the put.
Signed-off-by: David Teigland <[EMAIL PROTECTED]>
---
fs/dlm/user.c | 4 ++--
1 files changed, 2 insertions(+), 2 deletions(-)
diff --git a/fs/dlm/user.c b/fs/dlm/user.c
index 4f74154..eb61648 100644
--- a/fs/dlm/user.c
+++ b/fs/dlm/user.c
@@ -236,12 +236,12 @@ void dlm_user_add_ast(struct dlm_lkb *lkb, int type)
spin_unlock(&proc->asts_spin);
if (eol) {
- spin_lock(&ua->proc->locks_spin);
+ spin_lock(&proc->locks_spin);
if (!list_empty(&lkb->lkb_ownqueue)) {
list_del_init(&lkb->lkb_ownqueue);
dlm_put_lkb(lkb);
}
- spin_unlock(&ua->proc->locks_spin);
+ spin_unlock(&proc->locks_spin);
}
out:
mutex_unlock(&ls->ls_clear_proc_locks);
-
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