From Bugzilla Helper: User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.4) Gecko/20030624 Description of problem: I have had the following kernel panic on a dual cpu 7.3 machine running squid. The machine has been crashing every so often since I upgraded to 2.4.20-18.7smp but this is the first time I have got a crash dump (via serial logging to another box). Unable to handle kernel paging request at virtual address 02bad4d7 printing eip: c01436ad *pde = 00000000 Oops: 0002 nfs lockd sunrpc ip_conntrack_ftp autofs eepro100 mii ipt_LOG ipt_REJECT ipt_state ip_conntrack iptable_filter ip_tables ext3 jbd raid1 aic7xxx sd_mod scsi_mo CPU: 1 EIP: 0010:[<c01436ad>] Not tainted EFLAGS: 00010246 EIP is at try_to_unmap_one [kernel] 0x14d (2.4.20-18.7smp) eax: 00000000 ebx: 55470892 ecx: fffe3000 edx: 02bad4ab esi: 55610892 edi: c1000030 ebp: fffe3680 esp: f7ff3f48 ds: 0018 es: 0018 ss: 0018 Process kswapd (pid: 5, stackpage=f7ff3000) Stack: 02ffa400 02bad4ab c10106b0 c10106b0 c10106b0 00000006 c030c0a0 ffffffff c01437ca 02ffa400 c10106b0 c013e7f0 c03b8560 00000000 00000000 00000000 c10106b0 c030c0a0 c030c020 c0139a04 00000001 0000002c c030c0a0 c030d258 Call Trace: [<c01437ca>] try_to_unmap [kernel] 0x6a (0xf7ff3f68)) [<c013e7f0>] add_to_swap [kernel] 0x60 (0xf7ff3f74)) [<c0139a04>] launder_page [kernel] 0x5a4 (0xf7ff3f94)) [<c013bdfa>] rebalance_dirty_zone [kernel] 0x9a (0xf7ff3fac)) [<c013cb1f>] kswapd [kernel] 0x48f (0xf7ff3fcc)) [<c0105000>] stext [kernel] 0x0 (0xf7ff3fe8)) [<c0107266>] arch_kernel_thread [kernel] 0x26 (0xf7ff3ff0)) [<c013c690>] kswapd [kernel] 0x0 (0xf7ff3ff8)) Code: 86 42 2c 84 c0 7f 0c b8 01 00 00 00 e9 92 00 00 00 89 f6 56
I haven't seen this bug recently so I am guessing it is either fixed, or too infrequent to worry about.