Package: samba
Version: 3.0.21a-1
Severity: normal

I did an upgrade yesterday, and since then I'm being bombarded with
"Segfault in Samba" email messages.

>From smbd.log:

[2006/02/03 12:25:51, 1] smbd/service.c:make_connection_snum(666)
  jop (192.168.170.196) connect to service data initially as user gpsshop 
(uid=1015, gid=100) (pid 24888)
[2006/02/03 12:26:04, 2] smbd/open.c:open_file(369)
  gpsshop opened file firmware/Quest2/Quest2_250.exe read=Yes write=No 
(numopen= 2)
[2006/02/03 12:26:04, 2] smbd/close.c:close_normal_file(281)
  gpsshop closed file firmware/Quest2/Quest2_250.exe (numopen=1) 
[2006/02/03 12:26:04, 2] smbd/open.c:open_file(369)
  gpsshop opened file firmware/Quest2/Quest2_250.exe read=Yes write=No 
(numopen= 2)
[2006/02/03 12:26:06, 0] lib/fault.c:fault_report(36)
  ===============================================================
[2006/02/03 12:26:06, 0] lib/fault.c:fault_report(37)
  INTERNAL ERROR: Signal 10 in pid 24888 (3.0.21a-Debian)
  Please read the Trouble-Shooting section of the Samba3-HOWTO
[2006/02/03 12:26:06, 0] lib/fault.c:fault_report(39)
  
  From: http://www.samba.org/samba/docs/Samba3-HOWTO.pdf
[2006/02/03 12:26:06, 0] lib/fault.c:fault_report(40)
  ===============================================================
[2006/02/03 12:26:06, 0] lib/util.c:smb_panic2(1544)
  smb_panic(): calling panic action [/usr/share/samba/panic-action 24888]
[2006/02/03 12:26:06, 0] lib/util.c:smb_panic2(1552)
  smb_panic(): action returned status 0
[2006/02/03 12:26:06, 0] lib/util.c:smb_panic2(1554)
  PANIC: internal error
[2006/02/03 12:26:06, 0] lib/util.c:smb_panic2(1562)
  BACKTRACE: 0 stack frames:

Note that the email subject is wrong: it's not a SIGSEGV, it's a SIGBUS.
These are generally due to unaligned accesses to memory (e.g. accessing
a 32-bit integer from an address where (address % 4) != 0 ).

On sparc, unfortunately, I don't know how to track these down :-(
I'll try to reproduce it on an alpha (the kernel there is helpful enough
to report such accesses and to fix them up, although there's a
significant speed penalty).

In the meantime I've downgraded to 3.0.14a-sarge1; up to now no
problems.


Paul Slootman


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