[Savannah-hackers-public] Re: [Savannah-hackers-private] savannah kernel diagnostics, and cgit NULL-deref

[Sylvain Beucler]

[answering to -public]

The first warnings aren't good, those are the ones we got before the
last FS corruption.  I mailed the FSF to get new hardware faster, but
apparently they are currently lost in coreboot issues and won't be
ready before months.

The cgit segfaults are reported by newer kernels but were always
here. It would be good to fix them but maybe not a high priority.

-- 
Sylvain

On Thu, Aug 20, 2009 at 09:18:52AM +0200, Jim Meyering wrote:
> FYI,
> I left a root session open last night and found this on it this morning:
> 
>     address@hidden
>     Message from address@hidden at Aug 19 13:03:15 ...
>      kernel:[525876.695330] Uhhuh. NMI received for unknown reason b1 on CPU 
> 0.
> 
>     Message from address@hidden at Aug 19 13:03:15 ...
>      kernel:[525876.695387] You have some hardware problem, likely on the PCI 
> bus.
> 
>     Message from address@hidden at Aug 19 13:03:15 ...
>      kernel:[525876.695426] Dazed and confused, but trying to continue
> 
> I also saw this go by in dmesg output:
> 
>     [558020.381731] cgit.cgi[23693]: segfault at 0 ip b7edf3b3 sp bf9f80bc 
> error 4 in libc-2.7.so[b7e69000+155000]
>     [558100.952074] cgit.cgi[23756]: segfault at 0 ip b7ebd3b3 sp bfcd6bac 
> error 4 in libc-2.7.so[b7e47000+155000]
> 
> There have been others recently:
> 
>     address@hidden grep cgit /var/log/syslog
>     Aug 19 20:45:43 savannah kernel: [558020.381731] cgit.cgi[23693]: 
> segfault at 0 ip b7edf3b3 sp bf9f80bc error 4 in libc-2.7.so[b7e69000+155000]
>     Aug 19 20:46:47 savannah kernel: [558100.952074] cgit.cgi[23756]: 
> segfault at 0 ip b7ebd3b3 sp bfcd6bac error 4 in libc-2.7.so[b7e47000+155000]
>     Aug 19 23:35:05 savannah kernel: [570509.392545] cgit.cgi[31112]: 
> segfault at 0 ip b7e783b3 sp bf89374c error 4 in libc-2.7.so[b7e02000+155000]
>     Aug 20 00:07:36 savannah kernel: [572974.500537] cgit.cgi[4879]: segfault 
> at 0 ip b7e753b3 sp bfb90a5c error 4 in libc-2.7.so[b7dff000+155000]
>     Aug 20 00:13:42 savannah kernel: [573450.676082] cgit.cgi[5819]: segfault 
> at 0 ip b7df13b3 sp bf909fbc error 4 in libc-2.7.so[b7d7b000+155000]
>     Aug 20 02:33:16 savannah kernel: [584504.176829] cgit.cgi[1482]: segfault 
> at 0 ip b7e9b3b3 sp bf8b676c error 4 in libc-2.7.so[b7e25000+155000]
> 
> That's probably a NULL-dereference in cgit.
> 
> I'll bet we could find the URL(s) that provoked it,
> but I have to start my work day ;-)