From: Paul Aurich <paul@darkrain42.org>
To: linux-cifs@vger.kernel.org, sfrench@samba.org
Cc: paul@darkrain42.org
Subject: [PATCH] cifs: Return correct error code from smb2_get_enc_key
Date: Tue, 13 Apr 2021 14:25:27 -0700 [thread overview]
Message-ID: <20210413212527.473765-1-paul@darkrain42.org> (raw)
Avoid a warning if the error percolates back up:
[440700.376476] CIFS VFS: \\otters.example.com crypt_message: Could not get encryption key
[440700.386947] ------------[ cut here ]------------
[440700.386948] err = 1
[440700.386977] WARNING: CPU: 11 PID: 2733 at /build/linux-hwe-5.4-p6lk6L/linux-hwe-5.4-5.4.0/lib/errseq.c:74 errseq_set+0x5c/0x70
...
[440700.397304] CPU: 11 PID: 2733 Comm: tar Tainted: G OE 5.4.0-70-generic #78~18.04.1-Ubuntu
...
[440700.397334] Call Trace:
[440700.397346] __filemap_set_wb_err+0x1a/0x70
[440700.397419] cifs_writepages+0x9c7/0xb30 [cifs]
[440700.397426] do_writepages+0x4b/0xe0
[440700.397444] __filemap_fdatawrite_range+0xcb/0x100
[440700.397455] filemap_write_and_wait+0x42/0xa0
[440700.397486] cifs_setattr+0x68b/0xf30 [cifs]
[440700.397493] notify_change+0x358/0x4a0
[440700.397500] utimes_common+0xe9/0x1c0
[440700.397510] do_utimes+0xc5/0x150
[440700.397520] __x64_sys_utimensat+0x88/0xd0
Fixes: 61cfac6f267d ("CIFS: Fix possible use after free in demultiplex thread")
Signed-off-by: Paul Aurich <paul@darkrain42.org>
CC: stable@vger.kernel.org
---
fs/cifs/smb2ops.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/fs/cifs/smb2ops.c b/fs/cifs/smb2ops.c
index 61214b23c57f..caa5432a5ed1 100644
--- a/fs/cifs/smb2ops.c
+++ b/fs/cifs/smb2ops.c
@@ -4418,7 +4418,7 @@ smb2_get_enc_key(struct TCP_Server_Info *server, __u64 ses_id, int enc, u8 *key)
}
spin_unlock(&cifs_tcp_ses_lock);
- return 1;
+ return -ENOENT;
}
/*
* Encrypt or decrypt @rqst message. @rqst[0] has the following format:
--
2.31.0
next reply other threads:[~2021-04-13 21:31 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-04-13 21:25 Paul Aurich [this message]
2021-04-14 19:49 ` [PATCH] cifs: Return correct error code from smb2_get_enc_key Steve French
2021-04-14 22:24 ` Pavel Shilovsky
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