1385327 – Samba: Internal Error: Signal 11

Bug 1385327 - Samba: Internal Error: Signal 11

Summary: Samba: Internal Error: Signal 11

Keywords:
Status:	CLOSED DUPLICATE of bug 1375973
Alias:	None
Product:	Fedora
Classification:	Fedora
Component:	samba
Sub Component:
Version:	25
Hardware:	Unspecified
OS:	Unspecified
Priority:	unspecified
Severity:	unspecified
Target Milestone:	---
Assignee:	Guenther Deschner
QA Contact:	Fedora Extras Quality Assurance
Docs Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+	depends on / blocked

Reported:	2016-10-16 10:10 UTC by Persona non grata
Modified:	2016-10-17 15:05 UTC (History)
CC List:	12 users (show)
Fixed In Version:
Clone Of:
Environment:
Last Closed:	2016-10-17 15:05:57 UTC
Type:	Bug
Embargoed:
Dependent Products:

Attachments	(Terms of Use)
smb.conf (572 bytes, text/plain) 2016-10-16 10:10 UTC, Persona non grata	no flags	Details
Level 10 Debug Log (380.53 KB, text/plain) 2016-10-16 10:12 UTC, Persona non grata	no flags	Details
View All

Description Persona non grata 2016-10-16 10:10:17 UTC

Created attachment 1210937 [details]
smb.conf

Description of problem:
Samba crashes with "internal error: Signal 11" at startup.



Version-Release number of selected component (if applicable):
samba-4.5.0-2.fc25.x86_64



How reproducible:
Always.



Steps to Reproduce:
1. Install Samba
2. Start Samba (systemctl start smb)



Actual results:
[2016/10/16 11:53:26.406049,  1] ../source3/profile/profile.c:51(set_profile_level)
  INFO: Profiling turned OFF from pid 5248
[2016/10/16 11:53:26.411048,  0] ../lib/util/fault.c:78(fault_report)
  ===============================================================
[2016/10/16 11:53:26.411122,  0] ../lib/util/fault.c:79(fault_report)
  INTERNAL ERROR: Signal 11 in pid 5251 (4.5.0)
  Please read the Trouble-Shooting section of the Samba HOWTO
[2016/10/16 11:53:26.411150,  0] ../lib/util/fault.c:81(fault_report)
  ===============================================================
[2016/10/16 11:53:26.411169,  0] ../source3/lib/util.c:791(smb_panic_s3)
  PANIC (pid 5251): internal error
[2016/10/16 11:53:26.411262,  0] ../lib/util/fault.c:78(fault_report)
  ===============================================================
[2016/10/16 11:53:26.411335,  0] ../lib/util/fault.c:79(fault_report)
  INTERNAL ERROR: Signal 11 in pid 5252 (4.5.0)
  Please read the Trouble-Shooting section of the Samba HOWTO
[2016/10/16 11:53:26.411361,  0] ../lib/util/fault.c:81(fault_report)
  ===============================================================
[2016/10/16 11:53:26.411379,  0] ../source3/lib/util.c:791(smb_panic_s3)
  PANIC (pid 5252): internal error
[2016/10/16 11:53:26.411682,  0] ../source3/lib/util.c:902(log_stack_trace)
  BACKTRACE: 14 stack frames:
   #0 /lib64/libsmbconf.so.0(log_stack_trace+0x1c) [0x7f70b11cb80c]
   #1 /lib64/libsmbconf.so.0(smb_panic_s3+0x20) [0x7f70b11cb8e0]
   #2 /lib64/libsamba-util.so.0(smb_panic+0x2f) [0x7f70b36bf82f]
   #3 /lib64/libsamba-util.so.0(+0x22a46) [0x7f70b36bfa46]
   #4 /lib64/libpthread.so.0(+0x115c0) [0x7f70b39235c0]
   #5 /lib64/libtevent.so.0(tevent_debug+0x56) [0x7f70afc04f06]
   #6 /lib64/libtevent.so.0(tevent_common_loop_timer_delay+0xba) [0x7f70afc094ea]
   #7 /lib64/libsmbconf.so.0(run_events_poll+0x1a9) [0x7f70b11e32b9]
   #8 /lib64/libsmbconf.so.0(+0x36457) [0x7f70b11e3457]
   #9 /lib64/libtevent.so.0(_tevent_loop_once+0x9d) [0x7f70afc04abd]
   #10 /lib64/libtevent.so.0(tevent_req_poll+0x23) [0x7f70afc05e23]
   #11 /usr/sbin/smbd(main+0x860) [0x55889a3176b0]
   #12 /lib64/libc.so.6(__libc_start_main+0xf1) [0x7f70af85a401]
   #13 /usr/sbin/smbd(_start+0x2a) [0x55889a3186ba]
[2016/10/16 11:53:26.411797,  0] ../source3/lib/util.c:902(log_stack_trace)
  BACKTRACE: 5 stack frames:
[2016/10/16 11:53:26.411818,  0] ../source3/lib/dumpcore.c:303(dump_core)
   #0 /lib64/libsmbconf.so.0(log_stack_trace+0x1c) [0x7f70b11cb80c]
  dumping core in /var/log/samba/cores/smbd
   #1 /lib64/libsmbconf.so.0(smb_panic_s3+0x20) [0x7f70b11cb8e0]
   #2 /lib64/libsamba-util.so.0(smb_panic+0x2f) [0x7f70b36bf82f]
   #3 /lib64/libsamba-util.so.0(+0x22a46) [0x7f70b36bfa46]
   #4 /lib64/libpthread.so.0(+0x115c0) [0x7f70b39235c0]
[2016/10/16 11:53:26.411874,  0] ../source3/lib/dumpcore.c:303(dump_core)
  dumping core in /var/log/samba/cores/smbd
[2016/10/16 11:53:26.416653,  0] ../lib/util/become_daemon.c:124(daemon_ready)
  STATUS=daemon 'smbd' finished starting up and ready to serve connections
[2016/10/16 11:53:26.417636,  1] ../source3/printing/printer_list.c:234(printer_list_get_last_refresh)
  Failed to fetch record!
[2016/10/16 11:53:26.421938,  0] ../lib/util/fault.c:78(fault_report)
  ===============================================================
[2016/10/16 11:53:26.422014,  0] ../lib/util/fault.c:79(fault_report)
  INTERNAL ERROR: Signal 11 in pid 5255 (4.5.0)
  Please read the Trouble-Shooting section of the Samba HOWTO
[2016/10/16 11:53:26.422046,  0] ../lib/util/fault.c:81(fault_report)
  ===============================================================
[2016/10/16 11:53:26.422064,  0] ../source3/lib/util.c:791(smb_panic_s3)
  PANIC (pid 5255): internal error
[2016/10/16 11:53:26.422610,  0] ../source3/lib/util.c:902(log_stack_trace)
  BACKTRACE: 15 stack frames:
   #0 /lib64/libsmbconf.so.0(log_stack_trace+0x1c) [0x7f70b11cb80c]
   #1 /lib64/libsmbconf.so.0(smb_panic_s3+0x20) [0x7f70b11cb8e0]
   #2 /lib64/libsamba-util.so.0(smb_panic+0x2f) [0x7f70b36bf82f]
   #3 /lib64/libsamba-util.so.0(+0x22a46) [0x7f70b36bfa46]
   #4 /lib64/libpthread.so.0(+0x115c0) [0x7f70b39235c0]
   #5 /lib64/libtalloc.so.2(talloc_get_size+0x5) [0x7f70afe15125]
   #6 /lib64/libsmbconf.so.0(event_add_to_poll_args+0x76) [0x7f70b11e2eb6]
   #7 /lib64/libsmbconf.so.0(+0x36491) [0x7f70b11e3491]
   #8 /lib64/libtevent.so.0(_tevent_loop_once+0x9d) [0x7f70afc04abd]
   #9 /lib64/libtevent.so.0(tevent_common_loop_wait+0x1b) [0x7f70afc04ceb]
   #10 /usr/lib64/samba/libsmbd-base-samba4.so(start_background_queue+0x2b1) [0x7f70b31d5a31]
   #11 /usr/lib64/samba/libsmbd-base-samba4.so(printing_subsystem_init+0xb7) [0x7f70b31d5d57]
   #12 /usr/sbin/smbd(main+0x17e1) [0x55889a318631]
   #13 /lib64/libc.so.6(__libc_start_main+0xf1) [0x7f70af85a401]
   #14 /usr/sbin/smbd(_start+0x2a) [0x55889a3186ba]
[2016/10/16 11:53:26.422774,  0] ../source3/lib/dumpcore.c:303(dump_core)
  dumping core in /var/log/samba/cores/smbd
[2016/10/16 11:53:26.453473,  1] ../source3/smbd/server.c:803(remove_child_pid)
  remove_child_pid: Restarting cleanupd
[2016/10/16 11:53:26.453523,  0] ../lib/util/fault.c:78(fault_report)
  ===============================================================
[2016/10/16 11:53:26.453571,  0] ../lib/util/fault.c:79(fault_report)
  INTERNAL ERROR: Signal 11 in pid 5250 (4.5.0)
  Please read the Trouble-Shooting section of the Samba HOWTO
[2016/10/16 11:53:26.453595,  0] ../lib/util/fault.c:81(fault_report)
  ===============================================================
[2016/10/16 11:53:26.453612,  0] ../source3/lib/util.c:791(smb_panic_s3)
  PANIC (pid 5250): internal error
[2016/10/16 11:53:26.453870,  0] ../source3/lib/util.c:902(log_stack_trace)
  BACKTRACE: 19 stack frames:
   #0 /lib64/libsmbconf.so.0(log_stack_trace+0x1c) [0x7f70b11cb80c]
   #1 /lib64/libsmbconf.so.0(smb_panic_s3+0x20) [0x7f70b11cb8e0]
   #2 /lib64/libsamba-util.so.0(smb_panic+0x2f) [0x7f70b36bf82f]
   #3 /lib64/libsamba-util.so.0(+0x22a46) [0x7f70b36bfa46]
   #4 /lib64/libpthread.so.0(+0x115c0) [0x7f70b39235c0]
   #5 /lib64/libtevent.so.0(tevent_timeval_compare+0) [0x7f70afc090a0]
   #6 /lib64/libtevent.so.0(+0x9251) [0x7f70afc09251]
   #7 /lib64/libtevent.so.0(tevent_common_add_timer+0x13) [0x7f70afc09403]
   #8 /lib64/libtevent.so.0(tevent_req_set_endtime+0x60) [0x7f70afc05ef0]
   #9 /lib64/libtevent.so.0(tevent_wakeup_send+0x55) [0x7f70afc097a5]
   #10 /usr/sbin/smbd(+0xaebe) [0x55889a31bebe]
   #11 /lib64/libtevent.so.0(tevent_common_check_signal+0x278) [0x7f70afc08a58]
   #12 /lib64/libsmbconf.so.0(run_events_poll+0x24) [0x7f70b11e3134]
   #13 /lib64/libsmbconf.so.0(+0x364f7) [0x7f70b11e34f7]
   #14 /lib64/libtevent.so.0(_tevent_loop_once+0x9d) [0x7f70afc04abd]
   #15 /lib64/libtevent.so.0(tevent_common_loop_wait+0x1b) [0x7f70afc04ceb]
   #16 /usr/sbin/smbd(main+0x1642) [0x55889a318492]
   #17 /lib64/libc.so.6(__libc_start_main+0xf1) [0x7f70af85a401]
   #18 /usr/sbin/smbd(_start+0x2a) [0x55889a3186ba]
[2016/10/16 11:53:26.454026,  0] ../source3/lib/dumpcore.c:303(dump_core)
  dumping core in /var/log/samba/cores/smbd



Expected results:
smbd should start correctly.



Additional info:
- SELinux is disabled.
- Even if the log says, there is no core dump file in the mentioned directory.
- smb.conf for a standalone server with guest share attached.

Comment 1 Persona non grata 2016-10-16 10:12:37 UTC

Created attachment 1210938 [details]
Level 10 Debug Log

Comment 2 Persona non grata 2016-10-16 14:20:57 UTC

I figured out, what causes the problem: The libtevent package is incompatible.

F25 ships libtevent-0.9.30-1.fc25.x86_64. I downloaded the libtevent-0.9.28-1.fc24.x86_64 from the F24 repo and downgraded it using "dnf". Now Samba starts correctly.

Can you please ship an older version of libtevent in F25 or fix whatever causes this incompatibility? Thanks.

Comment 3 Nerijus Baliūnas 2016-10-17 08:26:20 UTC

Same here, downgrading libtevent helped.

Comment 4 Andreas Schneider 2016-10-17 15:05:57 UTC


*** This bug has been marked as a duplicate of bug 1375973 ***

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