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linux/fs/cifs
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Ronnie Sahlberg 214a5ea081 cifs: do not fail __smb_send_rqst if non-fatal signals are pending 
RHBZ 1848178

The original intent of returning an error in this function
in the patch:
  "CIFS: Mask off signals when sending SMB packets"
was to avoid interrupting packet send in the middle of
sending the data (and thus breaking an SMB connection),
but we also don't want to fail the request for non-fatal
signals even before we have had a chance to try to
send it (the reported problem could be reproduced e.g.
by exiting a child process when the parent process was in
the midst of calling futimens to update a file's timestamps).

In addition, since the signal may remain pending when we enter the
sending loop, we may end up not sending the whole packet before
TCP buffers become full. In this case the code returns -EINTR
but what we need here is to return -ERESTARTSYS instead to
allow system calls to be restarted.

Fixes: b30c74c73c ("CIFS: Mask off signals when sending SMB packets")
Cc: stable@vger.kernel.org # v5.1+
Signed-off-by: Ronnie Sahlberg <lsahlber@redhat.com>
Reviewed-by: Pavel Shilovsky <pshilov@microsoft.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
2021-01-23 01:28:20 -06:00
..
asn1.c cifs: remove bogus debug code 2020-10-22 12:17:52 -05:00
cache.c cifs: Make extract_sharename function public 2020-12-14 09:16:22 -06:00
cifs_debug.c cifs: Add witness information to debug data dump 2020-12-14 09:16:22 -06:00
cifs_debug.h cifs: Standardize logging output 2020-06-01 00:10:18 -05:00
cifs_dfs_ref.c cifs: remove various function description warnings 2020-12-14 09:16:23 -06:00
cifs_fs_sb.h cifs: move [brw]size from cifs_sb to cifs_sb->ctx 2020-12-14 09:26:30 -06:00
cifs_ioctl.h cifs: add SMB3 change notification support 2020-02-06 09:14:28 -06:00
cifs_spnego.c cifs: switch servers depending on binding state 2019-11-25 01:16:30 -06:00
cifs_spnego.h
cifs_swn.c cifs: Re-indent cifs_swn_reconnect() 2020-12-18 00:02:37 -06:00
cifs_swn.h cifs: Send witness register messages to userspace daemon in echo task 2020-12-14 09:16:23 -06:00
cifs_unicode.c Convert trailing spaces and periods in path components 2020-10-11 23:57:18 -05:00
cifs_unicode.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156 2019-05-30 11:26:35 -07:00
cifs_uniupr.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156 2019-05-30 11:26:35 -07:00
cifsacl.c SMB3: Add support for getting and setting SACLs 2020-12-18 13:25:57 -06:00
cifsacl.h cifs: Enable sticky bit with cifsacl mount option. 2020-12-13 19:12:07 -06:00
cifsencrypt.c cifs: switch to new mount api 2020-12-13 19:12:07 -06:00
cifsfs.c cifs: fix use after free in cifs_smb3_do_mount() 2020-12-15 16:55:57 -06:00
cifsfs.h cifs: update internal module version number 2020-12-16 21:56:42 -06:00
cifsglob.h SMB3: Add support for getting and setting SACLs 2020-12-18 13:25:57 -06:00
cifspdu.h SMB3: Add support for getting and setting SACLs 2020-12-18 13:25:57 -06:00
cifsproto.h SMB3: Add support for getting and setting SACLs 2020-12-18 13:25:57 -06:00
cifsroot.c cifs: Standardize logging output 2020-06-01 00:10:18 -05:00
cifssmb.c treewide: Use fallthrough pseudo-keyword 2020-08-23 17:36:59 -05:00
connect.c fs/cifs: Simplify bool comparison. 2021-01-17 19:22:24 -06:00
dfs_cache.c cifs: check pointer before freeing 2021-01-13 12:55:29 -06:00
dfs_cache.h cifs: rename smb_vol as smb3_fs_context and move it to fs_context.h 2020-12-13 19:12:07 -06:00
dir.c cifs: rename smb_vol as smb3_fs_context and move it to fs_context.h 2020-12-13 19:12:07 -06:00
dns_resolve.c keys: Pass the network namespace into request_key mechanism 2019-06-27 23:02:12 +01:00
dns_resolve.h
export.c docs: fs: convert docs without extension to ReST 2019-07-31 13:31:05 -06:00
file.c cifs: move [brw]size from cifs_sb to cifs_sb->ctx 2020-12-14 09:26:30 -06:00
fs_context.c fs: cifs: remove unneeded variable in smb3_fs_context_dup 2021-01-13 12:55:37 -06:00
fs_context.h cifs: move update of flags into a separate function 2020-12-14 09:28:25 -06:00
fscache.c cifs: Make extract_sharename function public 2020-12-14 09:16:22 -06:00
fscache.h cifs: Make extract_sharename function public 2020-12-14 09:16:22 -06:00
inode.c cifs: move [brw]size from cifs_sb to cifs_sb->ctx 2020-12-14 09:26:30 -06:00
ioctl.c cifs: fix reference leak for tlink 2020-07-09 10:06:52 -05:00
Kconfig cifs: minor updates to Kconfig 2020-12-14 09:16:22 -06:00
link.c smb311: add support for using info level for posix extensions query 2020-06-12 08:54:12 -05:00
Makefile cifs: Send witness register and unregister commands to userspace daemon 2020-12-14 09:16:22 -06:00
misc.c cifs: remove [gu]id/backup[gu]id/file_mode/dir_mode from cifs_sb 2020-12-14 09:16:23 -06:00
netlink.c cifs: Set witness notification handler for messages from userspace daemon 2020-12-14 09:16:22 -06:00
netlink.h cifs: Register generic netlink family 2020-12-14 09:16:22 -06:00
netmisc.c cifs`: handle ERRBaduid for SMB1 2020-08-02 18:00:25 -05:00
nterr.c
nterr.h
ntlmssp.h
readdir.c cifs: remove [gu]id/backup[gu]id/file_mode/dir_mode from cifs_sb 2020-12-14 09:16:23 -06:00
rfc1002pdu.h
sess.c cifs: simplify handling of cifs_sb/ctx->local_nls 2020-12-14 09:26:30 -06:00
smb1ops.c cifs: move [brw]size from cifs_sb to cifs_sb->ctx 2020-12-14 09:26:30 -06:00
smb2file.c cifs: allow unlock flock and OFD lock across fork 2020-03-22 22:49:09 -05:00
smb2glob.h smb3.1.1: set gcm256 when requested 2020-10-19 15:11:11 -05:00
smb2inode.c smb3: add support for stat of WSL reparse points for special file types 2020-10-23 15:38:10 -05:00
smb2maperror.c cifs: map STATUS_ACCOUNT_LOCKED_OUT to -EACCES 2020-10-15 23:58:14 -05:00
smb2misc.c cifs: remove various function description warnings 2020-12-14 09:16:23 -06:00
smb2ops.c Add SMB 2 support for getting and setting SACLs 2020-12-18 23:32:04 -06:00
smb2pdu.c cifs: fix interrupted close commands 2021-01-13 12:55:33 -06:00
smb2pdu.h cifs: style: replace one-element array with flexible-array 2021-01-13 13:36:45 -06:00
smb2proto.h SMB3: Add support for getting and setting SACLs 2020-12-18 13:25:57 -06:00
smb2status.h
smb2transport.c smb3.1.1: set gcm256 when requested 2020-10-19 15:11:11 -05:00
smbdirect.c cifs: Fix fall-through warnings for Clang 2020-12-13 19:12:07 -06:00
smbdirect.h cifs: smbd: Do not schedule work to send immediate packet on every receive 2020-04-07 12:41:16 -05:00
smbencrypt.c fs: cifs: move from the crypto cipher API to the new DES library interface 2019-08-22 14:57:34 +10:00
smberr.h
smbfsctl.h smb3: add some missing definitions from MS-FSCC 2020-10-23 15:38:10 -05:00
trace.c
trace.h cifs: Tracepoints and logs for tracing credit changes. 2020-12-15 16:56:04 -06:00
transport.c cifs: do not fail __smb_send_rqst if non-fatal signals are pending 2021-01-23 01:28:20 -06:00
unc.c cifs: remove some minor warnings pointed out by kernel test robot 2020-12-14 09:16:23 -06:00
winucase.c Replace HTTP links with HTTPS ones: CIFS 2020-07-05 14:23:38 -06:00
xattr.c Add SMB 2 support for getting and setting SACLs 2020-12-18 23:32:04 -06:00