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Subject: bug#68283: ls -l issues on cifs mounted directories
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After upgrading coreutils from version 9.3 to 9.4, "ls -l" shows error
messages, if the files or directories are in a cifs/smb3 mounted directory.
Example:
/mnt/cifstest here is mounted with "mount -t cifs -o username=myuser
//192.168.1.2/all /mnt/cifstest/". The server is a Samba 4.19.2 server.
The kernel is version 6.1.71.
# ls -l /mnt/cifstest/
ls: /mnt/cifstest/: Resource temporarily unavailable
ls: /mnt/cifstest/opt: Resource temporarily unavailable
ls: /mnt/cifstest/dev: Resource temporarily unavailable
ls: /mnt/cifstest/var: Resource temporarily unavailable
ls: /mnt/cifstest/usr: Resource temporarily unavailable
ls: /mnt/cifstest/sbin: Resource temporarily unavailable
ls: /mnt/cifstest/boot: Resource temporarily unavailable
ls: /mnt/cifstest/lib: Resource temporarily unavailable
ls: /mnt/cifstest/etc: Resource temporarily unavailable
ls: /mnt/cifstest/lib64: Resource temporarily unavailable
ls: /mnt/cifstest/run: Resource temporarily unavailable
ls: /mnt/cifstest/proc: Resource temporarily unavailable
ls: /mnt/cifstest/lost+found: Resource temporarily unavailable
ls: /mnt/cifstest/root: Resource temporarily unavailable
ls: /mnt/cifstest/sys: Resource temporarily unavailable
ls: /mnt/cifstest/bin: Resource temporarily unavailable
ls: /mnt/cifstest/srv: Resource temporarily unavailable
ls: /mnt/cifstest/home: Resource temporarily unavailable
ls: /mnt/cifstest/mnt: Resource temporarily unavailable
ls: /mnt/cifstest/tmp: Resource temporarily unavailable
total 0
drwxr-xr-x 2 root root 0 Jan 6 12:01 bin
drwxr-xr-x 2 root root 0 Jan 5 20:47 boot
drwxr-xr-x 2 root root 0 Jan 6 13:14 dev
drwxr-xr-x 2 root root 0 Jan 5 21:00 etc
drwxr-xr-x 2 root root 0 Dec 6 22:54 home
drwxr-xr-x 2 root root 0 Jan 4 21:51 lib
drwxr-xr-x 2 root root 0 Jan 5 21:00 lib64
drwxr-xr-x 2 root root 0 Dec 21 2014 lost+found
drwxr-xr-x 2 root root 0 Jun 9 2021 mnt
drwxr-xr-x 2 root root 0 Dec 26 22:34 opt
drwxr-xr-x 2 root root 0 Jan 5 23:17 proc
drwxr-xr-x 2 root root 0 Dec 10 19:49 root
drwxr-xr-x 2 root root 0 Jan 6 13:53 run
drwxr-xr-x 2 root root 0 Jan 5 20:59 sbin
drwxr-xr-x 2 root root 0 Dec 27 2021 srv
drwxr-xr-x 2 root root 0 Jan 6 01:19 sys
drwxr-xr-x 2 root root 0 Jan 6 13:53 tmp
drwxr-xr-x 2 root root 0 Dec 10 19:49 usr
drwxr-xr-x 2 root root 0 Dec 12 08:37 var
"ls -l" from coreutils 9.3 does not show any errors.
Probably it is not just the error message. "dmesg -w" shows several
errors after executing "ls -l":
[17563.999109] smb2_reconnect: 3 callbacks suppressed
[17563.999113] CIFS: VFS: reconnect tcon failed rc = -11
[17564.160117] CIFS: VFS: reconnect tcon failed rc = -11
[17564.192244] CIFS: VFS: reconnect tcon failed rc = -11
[17564.223303] CIFS: VFS: reconnect tcon failed rc = -11
[17564.256080] CIFS: VFS: reconnect tcon failed rc = -11
[17564.287887] CIFS: VFS: reconnect tcon failed rc = -11
[17564.410323] CIFS: VFS: reconnect tcon failed rc = -11
[17564.442095] CIFS: VFS: reconnect tcon failed rc = -11
[17564.474065] CIFS: VFS: reconnect tcon failed rc = -11
[17564.569435] CIFS: VFS: reconnect tcon failed rc = -11
I debugged this problem a bit. The changes in
coreutils-9.4/lib/file-has-acl.c:file_has_acl are probably responsible
for the errors. The system call listxttr produces the error message
"Resource temporarily unavailable". I could not find the reasons for
error messages shown with "dmesg".
The listxattr.c test program in the manual page (man listxattr) shows
the following output:
# ./listxattr /mnt/cifstest/
listxattr: Resource temporarily unavailable
Work-around are to downgrade to coreutils 9.3 or not to use the "-l"
option for ls.
Björn
Content-Disposition: inline Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-Mailer: MIME-tools 5.505 (Entity 5.505) Content-Type: text/plain; charset=utf-8 X-Loop: help-debbugs@HIDDEN From: help-debbugs@HIDDEN (GNU bug Tracking System) To: Bjoern Voigt <bjoernv@HIDDEN> Subject: bug#68283: Acknowledgement (ls -l issues on cifs mounted directories) Message-ID: <handler.68283.B.170454651919458.ack <at> debbugs.gnu.org> References: <0857af15-c169-4cb0-a4a8-0488fec2e94f@HIDDEN> X-Gnu-PR-Message: ack 68283 X-Gnu-PR-Package: coreutils Reply-To: 68283 <at> debbugs.gnu.org Date: Sat, 06 Jan 2024 13:09:02 +0000 Thank you for filing a new bug report with debbugs.gnu.org. This is an automatically generated reply to let you know your message has been received. Your message is being forwarded to the package maintainers and other interested parties for their attention; they will reply in due course. Your message has been sent to the package maintainer(s): bug-coreutils@HIDDEN If you wish to submit further information on this problem, please send it to 68283 <at> debbugs.gnu.org. Please do not send mail to help-debbugs@HIDDEN unless you wish to report a problem with the Bug-tracking system. --=20 68283: https://debbugs.gnu.org/cgi/bugreport.cgi?bug=3D68283 GNU Bug Tracking System Contact help-debbugs@HIDDEN with problems
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Subject: bug#68283: ls -l issues on cifs mounted directories
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On 06/01/2024 13:08, Bjoern Voigt via GNU coreutils Bug Reports wrote:
> After upgrading coreutils from version 9.3 to 9.4, "ls -l" shows error
> messages, if the files or directories are in a cifs/smb3 mounted directory.
>
> Example:
> /mnt/cifstest here is mounted with "mount -t cifs -o username=myuser
> //192.168.1.2/all /mnt/cifstest/". The server is a Samba 4.19.2 server.
> The kernel is version 6.1.71.
>
> # ls -l /mnt/cifstest/
> ls: /mnt/cifstest/: Resource temporarily unavailable
> "ls -l" from coreutils 9.3 does not show any errors.
>
> Probably it is not just the error message. "dmesg -w" shows several
> errors after executing "ls -l":
>
> [17563.999109] smb2_reconnect: 3 callbacks suppressed
> [17563.999113] CIFS: VFS: reconnect tcon failed rc = -11
> I debugged this problem a bit. The changes in
> coreutils-9.4/lib/file-has-acl.c:file_has_acl are probably responsible
> for the errors. The system call listxttr produces the error message
> "Resource temporarily unavailable". I could not find the reasons for
> error messages shown with "dmesg".
>
> The listxattr.c test program in the manual page (man listxattr) shows
> the following output:
>
> # ./listxattr /mnt/cifstest/
> listxattr: Resource temporarily unavailable
>
> Work-around are to downgrade to coreutils 9.3 or not to use the "-l"
> option for ls.
Thanks for the details.
EAGAIN is not a documented return from listxattr,
and it seems like the cifs client should not let that leak.
Perhaps the kernel needs another change along the lines of:
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=6efa994e35a
(That was included in v5.18).
Perhaps something to ask at linux-cifs@HIDDEN ?
If this is a common enough issue then it might be appropriate for us to handle,
but given the current info, ls is just informing you of an actual issue on your system.
thanks,
Pádraig
GNU bug tracking system
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1994-97 Ian Jackson.