Xiyu Yang dcec6678c3 configfs: fix config_item refcnt leak in configfs_rmdir() ... [ Upstream commit 8aebfffacf ] configfs_rmdir() invokes configfs_get_config_item(), which returns a reference of the specified config_item object to "parent_item" with increased refcnt. When configfs_rmdir() returns, local variable "parent_item" becomes invalid, so the refcount should be decreased to keep refcount balanced. The reference counting issue happens in one exception handling path of configfs_rmdir(). When down_write_killable() fails, the function forgets to decrease the refcnt increased by configfs_get_config_item(), causing a refcnt leak. Fix this issue by calling config_item_put() when down_write_killable() fails. Signed-off-by: Xiyu Yang <xiyuyang19@fudan.edu.cn> Signed-off-by: Xin Tan <tanxin.ctf@gmail.com> Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Sasha Levin <sashal@kernel.org>		2020-05-27 17:46:30 +02:00
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Kconfig	treewide: Add SPDX license identifier - Makefile/Kconfig	2019-05-21 10:50:46 +02:00
Makefile	treewide: Add SPDX license identifier - Makefile/Kconfig	2019-05-21 10:50:46 +02:00
configfs_internal.h	configfs: calculate the symlink target only once	2019-09-11 12:46:14 +02:00
dir.c	configfs: fix config_item refcnt leak in configfs_rmdir()	2020-05-27 17:46:30 +02:00
file.c	configfs: provide exclusion between IO and removals	2019-09-04 22:33:51 +02:00
inode.c	utimes: Clamp the timestamps in notify_change()	2020-02-11 04:35:12 -08:00
item.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 145	2019-05-30 11:25:18 -07:00
mount.c	configfs: calculate the symlink target only once	2019-09-11 12:46:14 +02:00
symlink.c	configfs: calculate the depth of parent item	2019-11-06 18:36:01 +01:00