This is a note to let you know that I've just added the patch titled
cifs: fix warning when destroy 'cifs_io_request_pool'
to the 6.11-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
cifs-fix-warning-when-destroy-cifs_io_request_pool.patch
and it can be found in the queue-6.11 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 5d8d185f65e775da95cac733c8db42adf8441d09
Author: Ye Bin <yebin10@xxxxxxxxxx>
Date: Wed Oct 23 09:24:30 2024 +0800
cifs: fix warning when destroy 'cifs_io_request_pool'
[ Upstream commit 2ce1007f42b8a6a0814386cb056feb28dc6d6091 ]
There's a issue as follows:
WARNING: CPU: 1 PID: 27826 at mm/slub.c:4698 free_large_kmalloc+0xac/0xe0
RIP: 0010:free_large_kmalloc+0xac/0xe0
Call Trace:
<TASK>
? __warn+0xea/0x330
mempool_destroy+0x13f/0x1d0
init_cifs+0xa50/0xff0 [cifs]
do_one_initcall+0xdc/0x550
do_init_module+0x22d/0x6b0
load_module+0x4e96/0x5ff0
init_module_from_file+0xcd/0x130
idempotent_init_module+0x330/0x620
__x64_sys_finit_module+0xb3/0x110
do_syscall_64+0xc1/0x1d0
entry_SYSCALL_64_after_hwframe+0x77/0x7f
Obviously, 'cifs_io_request_pool' is not created by mempool_create().
So just use mempool_exit() to revert 'cifs_io_request_pool'.
Fixes: edea94a69730 ("cifs: Add mempools for cifs_io_request and cifs_io_subrequest structs")
Signed-off-by: Ye Bin <yebin10@xxxxxxxxxx>
Acked-by: David Howells <dhowells@xxxxxxxxxx
Signed-off-by: Steve French <stfrench@xxxxxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/fs/smb/client/cifsfs.c b/fs/smb/client/cifsfs.c
index 33e2860010158..9bdb6e7f1dc3a 100644
--- a/fs/smb/client/cifsfs.c
+++ b/fs/smb/client/cifsfs.c
@@ -1780,7 +1780,7 @@ static int cifs_init_netfs(void)
nomem_subreqpool:
kmem_cache_destroy(cifs_io_subrequest_cachep);
nomem_subreq:
- mempool_destroy(&cifs_io_request_pool);
+ mempool_exit(&cifs_io_request_pool);
nomem_reqpool:
kmem_cache_destroy(cifs_io_request_cachep);
nomem_req:
