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robert.gehr at baumann-gmbh.de

2023-Aug-09 07:59 UTC

[Samba] PANIC: assert failed at

Hello there,

I am running the latest samba version 4.18.5 on Ubuntu 22.04 with all OS 
updates applied before compiling the thing.

The samba server runs for a while, several days sometimes even a couple 
of weeks. All of a sudden clients have trouble connecting to some shares.
The strange thing is that a good number of clients can still connect and 
seem to work all right while others can't.

After killing all samba processes and starting anew everything is back 
to normal and all clients who just had trouble can connect again.

No errors in syslog that would point somewhere and the log.smbd file 
shows the following.



------------------------

PANIC: assert failed at ../../source3/smbd/fd_handle.c(39): (fh->fd == 
-1) || (fh->fd == AT_FDCWD)
[2023/08/08 13:58:02.625780,  0] ../../lib/util/fault.c:173(smb_panic_log)
   ==============================================================[2023/08/08
13:58:02.625803,  0] ../../lib/util/fault.c:174(smb_panic_log)
   INTERNAL ERROR: assert failed: (fh->fd == -1) || (fh->fd == AT_FDCWD) 
in pid 3708663 (4.18.5)
[2023/08/08 13:58:02.625820,  0] ../../lib/util/fault.c:178(smb_panic_log)
   If you are running a recent Samba version, and if you think this 
problem is not yet fixed in the latest versions, please consider 
reporting this bug, see https://wiki.samba.org/index.php/Bug_Reporting
[2023/08/08 13:58:02.625837,  0] ../../lib/util/fault.c:183(smb_panic_log)
   ==============================================================[2023/08/08
13:58:02.625851,  0] ../../lib/util/fault.c:184(smb_panic_log)
   PANIC (pid 3708663): assert failed: (fh->fd == -1) || (fh->fd == 
AT_FDCWD) in 4.18.5
[2023/08/08 13:58:02.627108,  0] ../../lib/util/fault.c:292(log_stack_trace)
   BACKTRACE: 40 stack frames:
    #0 
/usr/local/bafs1-samba/lib/private/libgenrand-samba4.so(log_stack_trace+0x32) 
[0x7f5407fa5caa]
    #1 
/usr/local/bafs1-samba/lib/private/libgenrand-samba4.so(smb_panic_log+0x1dd) 
[0x7f5407fa5c27]
    #2 
/usr/local/bafs1-samba/lib/private/libgenrand-samba4.so(smb_panic+0x1c) 
[0x7f5407fa5c46]
    #3 
/usr/local/bafs1-samba/lib/private/libsmbd-base-samba4.so(+0x58c09) 
[0x7f5408423c09]
    #4 /usr/local/bafs1-samba/lib/private/libtalloc-samba4.so(+0x39d8) 
[0x7f54083259d8]
    #5 /usr/local/bafs1-samba/lib/private/libtalloc-samba4.so(+0x3d5a) 
[0x7f5408325d5a]
    #6 
/usr/local/bafs1-samba/lib/private/libtalloc-samba4.so(_talloc_free+0x10c) 
[0x7f5408327132]
    #7 
/usr/local/bafs1-samba/lib/private/libsmbd-base-samba4.so(+0x6ebe7) 
[0x7f5408439be7]
    #8 
/usr/local/bafs1-samba/lib/private/libsmbd-base-samba4.so(file_free+0x5b) 
[0x7f540843a120]
    #9 
/usr/local/bafs1-samba/lib/private/libsmbd-base-samba4.so(vfs_default_durable_reconnect+0x1b51)
[0x7f5408503e1c]
    #10 
/usr/local/bafs1-samba/lib/private/libsmbd-base-samba4.so(+0x68f25) 
[0x7f5408433f25]
    #11 
/usr/local/bafs1-samba/lib/private/libsmbd-base-samba4.so(smb_vfs_call_durable_reconnect+0x131)
[0x7f540848e84a]
    #12 
/usr/local/bafs1-samba/lib/private/libsmbd-base-samba4.so(+0x104c79) 
[0x7f54084cfc79]
    #13 
/usr/local/bafs1-samba/lib/private/libsmbd-base-samba4.so(smbd_smb2_request_process_create+0x7a1)
[0x7f54084cd94b]
    #14 
/usr/local/bafs1-samba/lib/private/libsmbd-base-samba4.so(smbd_smb2_request_dispatch+0x1688)
[0x7f54084be847]
    #15 
/usr/local/bafs1-samba/lib/private/libsmbd-base-samba4.so(+0xf88d6) 
[0x7f54084c38d6]
    #16 
/usr/local/bafs1-samba/lib/private/libsmbd-base-samba4.so(+0xf8a0c) 
[0x7f54084c3a0c]
    #17 
/usr/local/bafs1-samba/lib/private/libtevent-samba4.so(tevent_common_invoke_fd_handler+0x125)
[0x7f54081d1f4a]
    #18 /usr/local/bafs1-samba/lib/private/libtevent-samba4.so(+0x14605) 
[0x7f54081dd605]
    #19 /usr/local/bafs1-samba/lib/private/libtevent-samba4.so(+0x14d15) 
[0x7f54081ddd15]
    #20 /usr/local/bafs1-samba/lib/private/libtevent-samba4.so(+0x11372) 
[0x7f54081da372]
    #21 
/usr/local/bafs1-samba/lib/private/libtevent-samba4.so(_tevent_loop_once+0x126) 
[0x7f54081d09e0]
    #22 
/usr/local/bafs1-samba/lib/private/libtevent-samba4.so(tevent_common_loop_wait+0x29)
[0x7f54081d0d54]
    #23 /usr/local/bafs1-samba/lib/private/libtevent-samba4.so(+0x1141b) 
[0x7f54081da41b]
    #24 
/usr/local/bafs1-samba/lib/private/libtevent-samba4.so(_tevent_loop_wait+0x2f) 
[0x7f54081d0dfb]
    #25 
/usr/local/bafs1-samba/lib/private/libsmbd-base-samba4.so(smbd_process+0xd81) 
[0x7f54084a3e7a]
    #26 /usr/local/bafs1-samba/sbin/smbd(+0xa227) [0x56307b448227]
    #27 
/usr/local/bafs1-samba/lib/private/libtevent-samba4.so(tevent_common_invoke_fd_handler+0x125)
[0x7f54081d1f4a]
    #28 /usr/local/bafs1-samba/lib/private/libtevent-samba4.so(+0x14605) 
[0x7f54081dd605]
    #29 /usr/local/bafs1-samba/lib/private/libtevent-samba4.so(+0x14d15) 
[0x7f54081ddd15]
    #30 /usr/local/bafs1-samba/lib/private/libtevent-samba4.so(+0x11372) 
[0x7f54081da372]
    #31 
/usr/local/bafs1-samba/lib/private/libtevent-samba4.so(_tevent_loop_once+0x126) 
[0x7f54081d09e0]
    #32 
/usr/local/bafs1-samba/lib/private/libtevent-samba4.so(tevent_common_loop_wait+0x29)
[0x7f54081d0d54]
    #33 /usr/local/bafs1-samba/lib/private/libtevent-samba4.so(+0x1141b) 
[0x7f54081da41b]
    #34 
/usr/local/bafs1-samba/lib/private/libtevent-samba4.so(_tevent_loop_wait+0x2f) 
[0x7f54081d0dfb]
    #35 /usr/local/bafs1-samba/sbin/smbd(+0xafd7) [0x56307b448fd7]
    #36 /usr/local/bafs1-samba/sbin/smbd(main+0x19b1) [0x56307b44b30a]
    #37 /lib/x86_64-linux-gnu/libc.so.6(+0x29d90) [0x7f5407d68d90]
    #38 /lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0x80) 
[0x7f5407d68e40]
    #39 /usr/local/bafs1-samba/sbin/smbd(_start+0x25) [0x56307b444ba5]

-----------------

Any help is greatly apreciated

Best regards
Rob

Rowland Penny

2023-Aug-09 08:26 UTC

head link

[Samba] PANIC: assert failed at

On 09/08/2023 08:59, rob via samba wrote:> Hello there,
> 
> I am running the latest samba version 4.18.5 on Ubuntu 22.04 with all OS 
> updates applied before compiling the thing.
> 
> The samba server runs for a while, several days sometimes even a couple 
> of weeks. All of a sudden clients have trouble connecting to some shares.
> The strange thing is that a good number of clients can still connect and 
> seem to work all right while others can't.
> 
> After killing all samba processes and starting anew everything is back 
> to normal and all clients who just had trouble can connect again.
> 
> No errors in syslog that would point somewhere and the log.smbd file 
> shows the following.
> 
> 
> 
> ------------------------
> 
> PANIC: assert failed at ../../source3/smbd/fd_handle.c(39): (fh->fd == 
> -1) || (fh->fd == AT_FDCWD)
> [2023/08/08 13:58:02.625780,? 0] ../../lib/util/fault.c:173(smb_panic_log)
>  ? ==============================================================>
[2023/08/08 13:58:02.625803,? 0] ../../lib/util/fault.c:174(smb_panic_log)
>  ? INTERNAL ERROR: assert failed: (fh->fd == -1) || (fh->fd ==
AT_FDCWD)
> in pid 3708663 (4.18.5)
> [2023/08/08 13:58:02.625820,? 0] ../../lib/util/fault.c:178(smb_panic_log)
>  ? If you are running a recent Samba version, and if you think this 
> problem is not yet fixed in the latest versions, please consider 
> reporting this bug, see https://wiki.samba.org/index.php/Bug_Reporting
Please read and follow the wiki page, Samba should not crash.

Rowland

Ralph Boehme

2023-Aug-16 12:40 UTC

head link

[Samba] PANIC: assert failed at

On 8/9/23 09:59, rob via samba wrote:> /usr/local/bafs1-samba/lib/private/libsmbd-base-samba4.so(+0x6ebe7) 
> [0x7f5408439be7]
>  ?? #8 
> /usr/local/bafs1-samba/lib/private/libsmbd-base-samba4.so(file_free+0x5b)
[0x7f540843a120]
>  ?? #9 
>
/usr/local/bafs1-samba/lib/private/libsmbd-base-samba4.so(vfs_default_durable_reconnect+0x1b51)
[0x7f5408503e1c]

looks like a durable handle reconnect fails somewhere subtly and the 
error handling code didn't close the file descriptor of the fsp.

Installing Samba debug packages would add more info to the next crash, 
but you need to configure Samba with a panic action script "sleep
10000"
and then attach with gdb to the crashed proces, reading the full stack 
backtrace with "bt full".

-slow

-- 
Ralph Boehme, Samba Team                      https://samba.org/
SerNet Samba Team Lead                     https://sernet.de/en/
SAMBA+ Samba packages                        https://samba.plus/
SAMBA+ Webinar                 https://samba.plus/samba-webinars

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samba - Aug 2023 - PANIC: assert failed at

[Samba] PANIC: assert failed at

[Samba] PANIC: assert failed at

[Samba] PANIC: assert failed at