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| author |   Paulo Alcantara (SUSE) <pc@cjr.nz> | 2019-11-22 12:30:53 -0300 |
|---|---|---|
| committer |   Steve French <stfrench@microsoft.com> | 2019-11-25 09:33:04 -0600 |
| commit | 84a1f5b1cc6fd7f6cd99fc5630c36f631b19fa60 (patch) | |
| tree | 58346cce7b4f68ef8dc41b39c09c9885436750c4 /fs/cifs/connect.c | |
| parent | cifs: Fix lookup of root ses in DFS referral cache (diff) | |
| download | linux-dev-84a1f5b1cc6fd7f6cd99fc5630c36f631b19fa60.tar.xz linux-dev-84a1f5b1cc6fd7f6cd99fc5630c36f631b19fa60.zip | |
cifs: Fix potential softlockups while refreshing DFS cache
We used to skip reconnects on all SMB2_IOCTL commands due to SMB3+
FSCTL_VALIDATE_NEGOTIATE_INFO - which made sense since we're still
establishing a SMB session.
However, when refresh_cache_worker() calls smb2_get_dfs_refer() and
we're under reconnect, SMB2_ioctl() will not be able to get a proper
status error (e.g. -EHOSTDOWN in case we failed to reconnect) but an
-EAGAIN from cifs_send_recv() thus looping forever in
refresh_cache_worker().
Fixes: e99c63e4d86d ("SMB3: Fix deadlock in validate negotiate hits reconnect")
Signed-off-by: Paulo Alcantara (SUSE) <pc@cjr.nz>
Suggested-by: Aurelien Aptel <aaptel@suse.com>
Reviewed-by: Aurelien Aptel <aaptel@suse.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
Diffstat (limited to '')
0 files changed, 0 insertions, 0 deletions