Messages in this thread | | | Date | Thu, 27 Oct 2005 06:34:39 +0200 | From | Willy Tarreau <> | Subject | Re: PROBLEM: kernel crashes 2.4.31final + 2.4.32rc1 |
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Hi Hans & Marcelo,
On Wed, Oct 26, 2005 at 06:39:56AM -0200, Marcelo Tosatti wrote: > Hi Hans, > > On Mon, Oct 24, 2005 at 05:24:14PM +0200, Hans-Jürgen Mehnert wrote: > > [1.] > > PROBLEM: kernel crashes 2.4.31final + 2.4.32rc1 > > > > > > [2.] > > Since kernel version 2.4.31 we have system crashes with > > blank screen and nothing in logs on at least 5 different > > Intel and AMD SMP machines. 2.4.32rc1 has the same problem, > > 2.4.30 is working stable on these machines. We had no crashes > > with the newer kernel versions on about 100 single-cpu machines > > so far. > > Few questions: > > - Can you send dmesg output?
you could also try to get messages on the screen by preventing from blanking using setterm :
# setterm -blank 0
Also, using a serial console to get and log messages can help.
> - Are you using the ahci driver with the Intel SATA controller? There have > been some bugfixes in ahci during v2.4.31, although they dont look suspect. > Is there load on the interface? > > - Is the USB UHCI controller being used? There are known SMP problems > in the usb-uhci driver recently fixed (problem introduced in v2.4.28 though). > > - What is the workload on these machines? > > - Have you tried v2.4.31-pre1, -pre2, and so on to isolate the possibly problematic > change?
I also saw that at least the machine shown in the report is using grsec. Are all machines using grsec ? Although I don't believe it would be the cause, we cannot exclude that a recent bug could have been introduced in it.
And what's the average time before a crash ? hours, days, weeks ?
Regards, Willy
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