Messages in this thread | | | Date | Thu, 18 Jun 1998 13:20:00 +0100 (BST) | From | Vivek <> | Subject | Freeze Up... |
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Hi - hope this is the right place to post this [and I hope no-one on linux-kernel minds if I post this there too]: I just had our webserver, an x86 box:
processor : 0 cpu : 586 model : Pentium 75+ vendor_id : GenuineIntel stepping : 6 fdiv_bug : no hlt_bug : no f00f_bug : yes fpu : yes fpu_exception : yes cpuid : yes wp : yes flags : fpu vme de pse tsc msr mce cx8 bogomips : 40.04
with the following memory:
MemTotal: 47216 kB MemFree: 2180 kB MemShared: 35416 kB Buffers: 12848 kB Cached: 17824 kB SwapTotal: 66524 kB SwapFree: 66412 kB
freeze up on me. I could get it to flip between virtual consoles with alt-f<n>, but that was about it, not even the vulcan nerve pinch worked.
inspection of the /var/adm/kernel showed the following:
Jun 18 12:20:18 tanya linux: Unable to handle kernel paging request at virtual address c8109b18 Jun 18 12:20:18 tanya linux: current->tss.cr3 = 02dcb000, %cr3 = 02dcb000 Jun 18 12:20:18 tanya linux: *pde = 00000000 Jun 18 12:20:18 tanya linux: Oops: 0000 Jun 18 12:20:18 tanya linux: CPU: 0 Jun 18 12:20:18 tanya linux: EIP: 0010:[<00000004>] Jun 18 12:20:18 tanya linux: EFLAGS: 00010a07 Jun 18 12:20:18 tanya linux: eax: 002cabb0 ebx: fffffff7 ecx: 0810a058 edx: 00000003 Jun 18 12:20:18 tanya linux: esi: 08109b18 edi: 02145c0c ebp: 01b70600 esp: 02e2dfb0 Jun 18 12:20:18 tanya linux: ds: 0018 es: 0018 fs: 002b gs: 002b ss: 0018 Jun 18 12:20:18 tanya linux: Process xload (pid: 11643, process nr: 44, stackpage=02e2d000) Jun 18 12:20:18 tanya linux: Stack: 00000000 bffff744 0010a642 00000003 0810a058 00000040 08109b18 00000040 Jun 18 12:20:18 tanya linux: bffff768 ffffffda 0000002b 0000002b 0000002b 0000002b 00000004 4001cbc8 Jun 18 12:20:18 tanya linux: 00000023 00000202 bffff764 0000002b Jun 18 12:20:18 tanya linux: Call Trace: [<0010a642>] Jun 18 12:20:19 tanya linux: Code: 6f ef 00 f0 c3 e2 00 f0 6f ef 00 f0 6f ef 00 f0 54 ff 00 f0 Jun 18 12:20:19 tanya linux: general protection: 0000
followed by several entries like this:
Jun 18 12:20:19 tanya linux: general protection: 0000 Jun 18 12:20:19 tanya linux: CPU: 0 Jun 18 12:20:19 tanya linux: EIP: 0010:[<001232e4>] Jun 18 12:20:19 tanya linux: EFLAGS: 00010206 Jun 18 12:20:19 tanya linux: eax: 00c956a4 ebx: fffffff7 ecx: 40007000 edx: 00000001 Jun 18 12:20:19 tanya linux: esi: 000004a9 edi: 029ef810 ebp: 01b70f00 esp: 01903fac Jun 18 12:20:19 tanya linux: ds: 0018 es: 0018 fs: 002b gs: 002b ss: 0018 Jun 18 12:20:19 tanya linux: Process tail (pid: 10085, process nr: 59, stackpage=01903000) Jun 18 12:20:19 tanya linux: Stack: bfffec4c 00000003 bfffec0c 0010a642 00000001 40007000 000004a9 000004a9 Jun 18 12:20:19 tanya linux: 40007000 bfffeb58 ffffffda 0000002b 0000002b 0000002b 0000002b 00000004 Jun 18 12:20:19 tanya linux: 4001cbc8 00000023 00000206 bfffeb54 0000002b Jun 18 12:20:19 tanya linux: Call Trace: [<0010a642>] Jun 18 12:20:19 tanya linux: Code: c3 8d 76 00 8b 80 9c 00 00 00 8b 50 40 85 d2 74 23 6a 00 66
There were more entries of both kinds after this. I can send the full section of the log to anyone who wants to have a look - basically processes kept dying like flies until the machine froze up, about 80 seconds after the first error.
I've seen one error like this before, last week, when I was running 2.0.33, [patched against the ip attacks with the patch from Alan Cox ], which killed a few processes, and made a zombie of kswapd, but left the machine standing [but with the load apparently stuck at at least 1, although no process seemed to be using much cpu].
Anybody have any idea what's going on? Is this likely to be hardwarre related? [eg will replacing the SIMMs help? Is it time to phase out the server? ]
-- "whip me, beat me, make me administer aix!" -andrew
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