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authorPaul Aurich <paul@darkrain42.org>2021-04-13 23:25:27 +0200
committerSteve French <stfrench@microsoft.com>2021-04-25 23:28:24 +0200
commit83728cbf366e334301091d5b808add468ab46b27 (patch)
treed74730d1a5182613b6e4cc10becb29a7a918865a /fs/cifs
parentcifs: fix out-of-bound memory access when calling smb3_notify() at mount point (diff)
downloadlinux-83728cbf366e334301091d5b808add468ab46b27.tar.xz
linux-83728cbf366e334301091d5b808add468ab46b27.zip
cifs: Return correct error code from smb2_get_enc_key
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 Signed-off-by: Steve French <stfrench@microsoft.com>
Diffstat (limited to 'fs/cifs')
-rw-r--r--fs/cifs/smb2ops.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/cifs/smb2ops.c b/fs/cifs/smb2ops.c
index 60a474990924..66b20762c2c9 100644
--- a/fs/cifs/smb2ops.c
+++ b/fs/cifs/smb2ops.c
@@ -4285,7 +4285,7 @@ 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 -EAGAIN;
}
/*
* Encrypt or decrypt @rqst message. @rqst[0] has the following format: