enterprise-support team mailing list archive

[Adam Baxter <2020260@xxxxxxxxxxxxxxxxxx>]

Public bug reported:

Windows clients lock up while connecting to the server, and the server
logs the following:


```
  ===============================================================
[2023/05/21 10:08:50.500473,  0] ../../lib/util/fault.c:174(smb_panic_log)
  INTERNAL ERROR: Signal 11: Segmentation fault in pid 4223 (4.17.7-Ubuntu)
[2023/05/21 10:08:50.500476,  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
[2023/05/21 10:08:50.500479,  0] ../../lib/util/fault.c:183(smb_panic_log)
  ===============================================================
[2023/05/21 10:08:50.500482,  0] ../../lib/util/fault.c:184(smb_panic_log)
  PANIC (pid 4223): Signal 11: Segmentation fault in 4.17.7-Ubuntu
[2023/05/21 10:08:50.500661,  0] ../../lib/util/fault.c:292(log_stack_trace)
  BACKTRACE: 32 stack frames:
   #0 /usr/lib/x86_64-linux-gnu/samba/libgenrand-samba4.so.0(log_stack_trace+0x32) [0x7f33665d04d2]
   #1 /usr/lib/x86_64-linux-gnu/samba/libgenrand-samba4.so.0(smb_panic+0xd) [0x7f33665d0a8d]
   #2 /usr/lib/x86_64-linux-gnu/samba/libgenrand-samba4.so.0(+0x1b25) [0x7f33665d0b25]
   #3 /lib/x86_64-linux-gnu/libc.so.6(+0x3c4b0) [0x7f336623c4b0]
   #4 /lib/x86_64-linux-gnu/libc.so.6(+0x173b1d) [0x7f3366373b1d]
   #5 /lib/x86_64-linux-gnu/libsamba-util.so.0(push_ucs2_talloc+0x22) [0x7f336682b7a2]
   #6 /usr/lib/x86_64-linux-gnu/samba/libcliauth-samba4.so.0(E_md4hash+0x36) [0x7f3366891d56]
   #7 /usr/lib/x86_64-linux-gnu/samba/libsmbd-base-samba4.so.0(create_volume_objectid+0x53) [0x7f33669bc2a3]
   #8 /usr/lib/x86_64-linux-gnu/samba/libsmbd-base-samba4.so.0(+0x3c2f8) [0x7f33669972f8]
   #9 /usr/lib/x86_64-linux-gnu/samba/libsmbd-base-samba4.so.0(smb2_ioctl_filesys+0x503) [0x7f3366a13393]
   #10 /usr/lib/x86_64-linux-gnu/samba/libsmbd-base-samba4.so.0(smbd_smb2_request_process_ioctl+0x3f3) [0x7f3366a156d3]
   #11 /usr/lib/x86_64-linux-gnu/samba/libsmbd-base-samba4.so.0(smbd_smb2_request_dispatch+0x10f2) [0x7f3366a03fa2]
   #12 /usr/lib/x86_64-linux-gnu/samba/libsmbd-base-samba4.so.0(smbd_smb2_request_dispatch_immediate+0x50) [0x7f3366a055a0]
   #13 /lib/x86_64-linux-gnu/libtevent.so.0(tevent_common_invoke_immediate_handler+0x182) [0x7f336657b082]
   #14 /lib/x86_64-linux-gnu/libtevent.so.0(tevent_common_loop_immediate+0x1a) [0x7f336657b0aa]
   #15 /lib/x86_64-linux-gnu/libtevent.so.0(+0xd91f) [0x7f336657e91f]
   #16 /lib/x86_64-linux-gnu/libtevent.so.0(+0x5eeb) [0x7f3366576eeb]
   #17 /lib/x86_64-linux-gnu/libtevent.so.0(_tevent_loop_once+0x95) [0x7f33665792b5]
   #18 /lib/x86_64-linux-gnu/libtevent.so.0(tevent_common_loop_wait+0x1b) [0x7f33665793cb]
   #19 /lib/x86_64-linux-gnu/libtevent.so.0(+0x5f5b) [0x7f3366576f5b]
   #20 /usr/lib/x86_64-linux-gnu/samba/libsmbd-base-samba4.so.0(smbd_process+0x7ec) [0x7f33669f1b4c]
   #21 /usr/sbin/smbd(+0xa390) [0x556163d14390]
   #22 /lib/x86_64-linux-gnu/libtevent.so.0(tevent_common_invoke_fd_handler+0x95) [0x7f336657ae45]
   #23 /lib/x86_64-linux-gnu/libtevent.so.0(+0xdb37) [0x7f336657eb37]
   #24 /lib/x86_64-linux-gnu/libtevent.so.0(+0x5eeb) [0x7f3366576eeb]
   #25 /lib/x86_64-linux-gnu/libtevent.so.0(_tevent_loop_once+0x95) [0x7f33665792b5]
   #26 /lib/x86_64-linux-gnu/libtevent.so.0(tevent_common_loop_wait+0x1b) [0x7f33665793cb]
   #27 /lib/x86_64-linux-gnu/libtevent.so.0(+0x5f5b) [0x7f3366576f5b]
   #28 /usr/sbin/smbd(main+0x148d) [0x556163d1200d]
   #29 /lib/x86_64-linux-gnu/libc.so.6(+0x23a90) [0x7f3366223a90]
   #30 /lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0x89) [0x7f3366223b49]
   #31 /usr/sbin/smbd(_start+0x25) [0x556163d128f5]
[2023/05/21 10:08:50.500708,  0] ../../source3/lib/util.c:702(smb_panic_s3)
  smb_panic(): calling panic action [/usr/share/samba/panic-action 4223]
[2023/05/21 10:08:50.501441,  0] ../../source3/lib/util.c:709(smb_panic_s3)
  smb_panic(): action returned status 0
[2023/05/21 10:08:50.501455,  0] ../../source3/lib/dumpcore.c:317(dump_core)
  coredump is handled by helper binary specified at /proc/sys/kernel/core_pattern
```

ProblemType: Bug
DistroRelease: Ubuntu 23.04
Package: samba 2:4.17.7+dfsg-1ubuntu1
ProcVersionSignature: Ubuntu 6.2.0-20.20-generic 6.2.6
Uname: Linux 6.2.0-20-generic x86_64
NonfreeKernelModules: zfs zunicode zavl icp zcommon znvpair
ApportVersion: 2.26.1-0ubuntu2
Architecture: amd64
CasperMD5CheckResult: pass
CloudArchitecture: x86_64
CloudID: none
CloudName: none
CloudPlatform: none
CloudSubPlatform: config
Date: Sun May 21 10:17:20 2023
InstallationDate: Installed on 2023-05-21 (0 days ago)
InstallationMedia: Ubuntu-Server 23.04 "Lunar Lobster" - Release amd64 (20230415)
NmbdLog:
 
ProcEnviron:
 LANG=C.UTF-8
 PATH=(custom, no user)
 SHELL=/bin/bash
 TERM=tmux-256color
SambaServerRegression: Yes
SmbConfIncluded: Yes
SmbLog:
 
SourcePackage: samba
TestparmExitCode: 0
UbuntuFailedConnect: Yes
UpgradeStatus: No upgrade log present (probably fresh install)

** Affects: samba (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug lunar

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https://bugs.launchpad.net/bugs/2020260

Title:
  Samba seems to panic after enabling and connecting to ZFS backed share

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