From Bugzilla Helper: User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.4) Gecko/20030703 Description of problem: While trying to track down random X crashes, I found that my machine had paniced. Occasionally I've had complete system locks as well, which probably would have shown a panic if I hadn't been in X. Here is the panic I was able to capture: Aug 5 15:36:56 localhost kernel: Unable to handle kernel paging request at virtual address 6bcd031f Aug 5 15:36:56 localhost kernel: printing eip: Aug 5 15:36:56 localhost kernel: c0132a93 Aug 5 15:36:56 localhost kernel: *pde = 00000000 Aug 5 15:36:56 localhost kernel: Oops: 0000 Aug 5 15:36:56 localhost kernel: maestro soundcore parport_pc lp parport sd_mod scsi_mod ide-cd cdrom autofs orinoco_cs orinoco hermes ds yenta_socket pcmcia_core floppy microcode keybdev mou Aug 5 15:36:56 localhost kernel: CPU: 0 Aug 5 15:36:56 localhost kernel: EIP: 0060:[<c0132a93>] Not tainted Aug 5 15:36:56 localhost kernel: EFLAGS: 00013202 Aug 5 15:36:56 localhost kernel: Aug 5 15:36:56 localhost kernel: EIP is at find_vma [kernel] 0x33 (2.4.21-20.1.2024.2.1.nptl) Aug 5 15:36:56 localhost kernel: eax: 6bcd0317 ebx: 0000005d ecx: cd0326a9 edx: 6bcd032f Aug 5 15:36:56 localhost kernel: esi: ce5e9744 edi: c0118140 ebp: 0000005d esp: ccfe3f04 Aug 5 15:36:56 localhost gdm(pam_unix)[2085]: session closed for user gboyce Aug 5 15:36:56 localhost kernel: ds: 0068 es: 0068 ss: 0068 Aug 5 15:36:57 localhost kernel: Process X (pid: 2086, stackpage=ccfe3000) Aug 5 15:36:57 localhost gdm[2085]: gdm_slave_xioerror_handler: Fatal X error - Restarting :0 Aug 5 15:36:57 localhost kernel: Stack: ce5e9744 ce5e9768 c01181c4 ce5e9744 0000005d ce3b79c8 ce3b79ec ccfe2000 Aug 5 15:36:57 localhost kernel: c013b885 cffda100 ce3b7000 00030001 00000041 002ab250 ce3b79cc 00003286 Aug 5 15:36:57 localhost kernel: 00000000 00003286 cffda100 ce3b79cc 00003286 ccfe2000 c01babc5 03155fd6 Aug 5 15:36:57 localhost kernel: Call Trace: [<c01181c4>] do_page_fault [kernel] 0x84 (0xccfe3f0c) Aug 5 15:36:58 localhost kernel: [<c013b885>] kmem_cache_free_one [kernel] 0xf5 (0xccfe3f24) Aug 5 15:36:58 localhost kernel: [<c01babc5>] read_aux [kernel] 0xf5 (0xccfe3f5c) Aug 5 15:36:58 localhost kernel: [<c0145164>] sys_read [kernel] 0xf4 (0xccfe3f94) Aug 5 15:36:58 localhost kernel: [<c0118140>] do_page_fault [kernel] 0x0 (0xccfe3fb0) Aug 5 15:36:58 localhost kernel: [<c0109ab0>] error_code [kernel] 0x34 (0xccfe3fb8) Aug 5 15:36:58 localhost kernel: Aug 5 15:36:58 localhost kernel: Aug 5 15:36:58 localhost kernel: Code: 39 58 08 76 1a 39 58 04 89 c1 76 07 8b 52 0c 85 d2 75 ea 85 Version-Release number of selected component (if applicable): kernel-2.4.21-20.1.2024.2.1.nptl How reproducible: Sometimes Steps to Reproduce: 1.Run many applications (evolution/mozilla/others) 2.Eventually X crashes. 3.Panic is found in dmesg Additional info:
I've since started seeing similiar panics and X crashes (sig11) on Redhat 9 as well. After an extended run of memtest86, I found a single memory problem with a single bit. Unless other people are reporting similiar problems, I'm guessing my system issues were caused by bad memory rather than a software bug.