3.18-stable review patch. If anyone has any objections, please let me know.
------------------ From: NeilBrown <[email protected]> commit 52d304eb4eaced9ad04b64ba7cd6ceb5153bbf18 upstream. commit 0efaa7e82f02fe69c05ad28e905f31fc86e6f08e locks: generic_delete_lease doesn't need a file_lock at all moves the call to fl->fl_lmops->lm_change() to a place in the code where fl might be a non-lease lock. When that happens, fl_lmops is NULL and an Oops ensures. So add an extra test to restore correct functioning. Reported-by: Linda Walsh <[email protected]> Link: https://bugzilla.suse.com/show_bug.cgi?id=912569 Fixes: 0efaa7e82f02fe69c05ad28e905f31fc86e6f08e Signed-off-by: NeilBrown <[email protected]> Signed-off-by: Jeff Layton <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]> --- fs/locks.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/fs/locks.c +++ b/fs/locks.c @@ -1702,7 +1702,7 @@ static int generic_delete_lease(struct f break; } trace_generic_delete_lease(inode, fl); - if (fl) + if (fl && IS_LEASE(fl)) error = fl->fl_lmops->lm_change(before, F_UNLCK, &dispose); spin_unlock(&inode->i_lock); locks_dispose_list(&dispose); -- To unsubscribe from this list: send the line "unsubscribe stable" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
