Jingbo Xu cf5bb09e74 cachefiles: add missing lock protection when polling ... Add missing lock protection in poll routine when iterating xarray, otherwise: Even with RCU read lock held, only the slot of the radix tree is ensured to be pinned there, while the data structure (e.g. struct cachefiles_req) stored in the slot has no such guarantee. The poll routine will iterate the radix tree and dereference cachefiles_req accordingly. Thus RCU read lock is not adequate in this case and spinlock is needed here. Fixes: b817e22b2e ("cachefiles: narrow the scope of triggering EPOLLIN events in ondemand mode") Signed-off-by: Jingbo Xu <jefflexu@linux.alibaba.com> Signed-off-by: Baokun Li <libaokun1@huawei.com> Link: https://lore.kernel.org/r/20240628062930.2467993-10-libaokun@huaweicloud.com Acked-by: Jeff Layton <jlayton@kernel.org> Reviewed-by: Jia Zhu <zhujia.zj@bytedance.com> Reviewed-by: Gao Xiang <hsiangkao@linux.alibaba.com> Signed-off-by: Christian Brauner <brauner@kernel.org>		2024-07-03 10:36:16 +02:00
..
cache.c	cachefiles: fix slab-use-after-free in cachefiles_withdraw_cookie()	2024-07-03 10:36:15 +02:00
daemon.c	cachefiles: add missing lock protection when polling	2024-07-03 10:36:16 +02:00
error_inject.c	cachefiles: Remove the now superfluous sentinel element from ctl_table array	2023-12-28 04:57:57 -08:00
interface.c	cachefiles: extract ondemand info field from cachefiles_object	2023-11-25 16:03:57 +01:00
internal.h	cachefiles: cyclic allocation of msg_id to avoid reuse	2024-07-03 10:36:16 +02:00
io.c	netfs, cachefiles: Implement helpers for new write code	2024-05-01 18:07:37 +01:00
Kconfig	netfs, fscache: Combine fscache with netfs	2023-12-24 15:08:46 +00:00
key.c	cachefiles: Implement key to filename encoding	2022-01-07 13:42:16 +00:00
main.c	cachefiles: Implement object lifecycle funcs	2022-01-07 13:42:08 +00:00
Makefile	cachefiles: notify the user daemon when looking up cookie	2022-05-18 00:11:17 +08:00
namei.c	kernel_file_open(): get rid of inode argument	2024-04-15 16:03:24 -04:00
ondemand.c	cachefiles: cyclic allocation of msg_id to avoid reuse	2024-07-03 10:36:16 +02:00
security.c
volume.c	cachefiles: fix slab-use-after-free in cachefiles_withdraw_cookie()	2024-07-03 10:36:15 +02:00
xattr.c	cachefiles: propagate errors from vfs_getxattr() to avoid infinite loop	2024-07-03 10:36:15 +02:00