Public bug reported:
Running precise with the quantal kernel as details in this testcase
http://packages.qa.ubuntu.com/qatracker/milestones/223/builds/25321/testcases
results in panics in samba and core dumps. Trying to connect from
windows will automatically cause the panic but sometimes connections
from other ubuntu machines will also trigger it.
[2012/11/06 08:04:26.317198, 0] lib/util.c:1117(smb_panic)
PANIC (pid 6406): sys_setgroups failed
[2012/11/06 08:04:26.401283, 0] lib/util.c:1221(log_stack_trace)
BACKTRACE: 21 stack frames:
#0 smbd(log_stack_trace+0x1a) [0x7f839688baea]
#1 smbd(smb_panic+0x25) [0x7f839688bbc5]
#2 smbd(+0x163be6) [0x7f83965d6be6]
#3 smbd(set_sec_ctx+0x8f) [0x7f83965d6f0f]
#4 smbd(+0x152db5) [0x7f83965c5db5]
#5 smbd(+0x17ae2b) [0x7f83965ede2b]
#6 smbd(+0x17b76e) [0x7f83965ee76e]
#7 smbd(make_connection+0x1ea) [0x7f83965eeaea]
#8 smbd(reply_tcon_and_X+0x1dc) [0x7f839659f82c]
#9 smbd(+0x176fa4) [0x7f83965e9fa4]
#10 smbd(+0x1773bb) [0x7f83965ea3bb]
#11 smbd(+0x1777d3) [0x7f83965ea7d3]
#12 smbd(run_events_poll+0x34e) [0x7f839689b8ae]
#13 smbd(smbd_process+0x812) [0x7f83965ebf42]
#14 smbd(+0x68666f) [0x7f8396af966f]
#15 smbd(run_events_poll+0x34e) [0x7f839689b8ae]
#16 smbd(+0x428a4a) [0x7f839689ba4a]
#17 smbd(_tevent_loop_once+0x90) [0x7f839689c5d0]
#18 smbd(main+0xed0) [0x7f839656a030]
#19 /lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xed) [0x7f839341576d]
#20 smbd(+0xf7515) [0x7f839656a515]
[2012/11/06 08:04:26.406731, 0] lib/util.c:1122(smb_panic)
smb_panic(): calling panic action [/usr/share/samba/panic-action 6406]
[2012/11/06 08:04:31.805828, 0] lib/util.c:1130(smb_panic)
smb_panic(): action returned status 0
[2012/11/06 08:04:31.836695, 0] lib/fault.c:372(dump_core)
dumping core in /var/log/samba/cores/smbd
** Affects: linux (Ubuntu)
Importance: Undecided
Status: Confirmed
** Tags: qa-kernel-lts-testing quantal
** Attachment added: "lspci.log"
https://bugs.launchpad.net/bugs/1075670/+attachment/3425937/+files/lspci.log
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https://bugs.launchpad.net/bugs/1075670
Title:
samba panics with sys_setgroups failed
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