8-STABLE/amd64 semi-regular crash with "kernel trap 12 with interrupts disabled" in "process 12 (swi4: clock)"

Eugene Grosbein egrosbein at rdtc.ru
Wed Jan 19 09:50:34 UTC 2011

On 19.01.2011 15:00, Lev Serebryakov wrote:
> Hello, Eugene.
> You wrote 19 января 2011 г., 11:44:01:
>> There is known instability in em(4) driver in 8.2-RELEASE,
>> it may panic due to some lack of NULL pointer checks.
>> You should update to RELENG_8 containting fix and retest.
>  uname -v
>  FreeBSD 8.2-PRERELEASE #5: Sat Jan  8 14:38:46 MSK 2011
>  It is built about hour after cvsup.

Yes, I've missed it's PRERELEASE already.
Backtrace points to the problem in em_local_timer() fixed in CURRENT
7 days ago, take a look:


I run my servers with this commit backported manually as
it has not been MFC'd yet.

Eugene Grosbein

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