Sendmail died on Slackware 10.2

shubb · 01-04-2006, 03:46 PM

Can anyone help me figure out why Sendmail died on my slackware 10.2 server?
I had sendmail running, but it was not configured.

When it crashed, it locked me out of the system. I could not log in via ssh, or on the console. I had to power cycle the box to recover it.
The following was on the console and in the syslog.

Code:

Dec 24 08:12:24 server1 kernel: Unable to handle kernel NULL pointer dereference at virtual address 000001d2
Dec 24 08:12:24 server1 kernel:  printing eip:
Dec 24 08:12:24 server1 kernel: c0114dc3
Dec 24 08:12:24 server1 kernel: *pde = 00000000
Dec 24 08:12:24 server1 kernel: Oops: 0000
Dec 24 08:12:24 server1 kernel: CPU:    0
Dec 24 08:12:24 server1 kernel: EIP:    0010:[<c0114dc3>]    Not tainted
Dec 24 08:12:24 server1 kernel: EFLAGS: 00010002
Dec 24 08:12:24 server1 kernel: eax: c27ebc54   ebx: c27ebc94   ecx: 000001d2   edx: 00000003
Dec 24 08:12:24 server1 kernel: esi: c27ebbb0   edi: c27ebc54   ebp: ce951e8c   esp: ce951e74
Dec 24 08:12:24 server1 kernel: ds: 0018   es: 0018   ss: 0018
Dec 24 08:12:24 server1 kernel: Process sendmail (pid: 13967, stackpage=ce951000)
Dec 24 08:12:24 server1 kernel: Stack: 00000001 00000282 00000003 cffe5090 c27ebbb0 cffe9800 c47f1000 c015574f
Dec 24 08:12:24 server1 kernel:        c27ebbb0 cffe5090 c47f8653 cffe50e3 c01574bc cffe9800 00001000 cffe5090
Dec 24 08:12:24 server1 kernel:        ffffffea 00000000 cffe73e0 c47f85f0 cffe73e0 c47f85f0 c0155847 cffe73e0
Dec 24 08:12:24 server1 kernel: Call Trace:    [<c015574f>] [<c01574bc>] [<c0155847>] [<c014017a>] [<c0140948>]
Dec 24 08:12:24 server1 kernel:   [<c0140d39>] [<c0141144>] [<c01360ae>] [<c013644b>] [<c0108a93>]
Dec 24 08:12:24 server1 kernel:
Dec 24 08:12:24 server1 kernel: Code: 8b 01 85 45 f0 74 56 31 c0 9c 5e fa 8b 51 3c 85 d2 c7 01 00

MS3FGX · 01-06-2006, 01:51 AM

That is a hard kernel crash, something is definitely wrong there.

Either you have a hardware problem (have you run the machine for long periods of time without sendmail running?), or perhaps you were the victim of some sendmail DoS, since you hadn't configured sendmail properly (or at all, actually).

trickykid · 01-06-2006, 06:23 AM

If sendmail isn't configured, are you even using it? If so, you should try to disable services from running if they are not needed. But like the other poster mentioned, this isn't an issue with sendmail your seeing.

shubb · 01-06-2006, 11:10 AM

This server is a new re-install. I had the previous version running as my backup mail server. I installed sendmail, but had not gotten around to importing the config back. I've stopped sendmail from running until I re-configure it.

You think this could be a problem with sendmail running without proper configs?