CVE-2021-46960

In the Linux kernel, the following vulnerability has been resolved:

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