It happens just after daily cron task execution, and msec process is named in output
Mar 28 04:02:00 silbermann CROND[18226]: (root) CMD (nice -n 19 run-parts /etc/cron.daily) Mar 28 04:02:45 silbermann kernel: invalid operand: 0000 Mar 28 04:02:45 silbermann kernel: CPU: 0 Mar 28 04:02:45 silbermann kernel: EIP: 0010:[__free_pages_ok+42/560] Tainted: P Mar 28 04:02:45 silbermann kernel: EIP: 0010:[<c012b68a>] Tainted: P Mar 28 04:02:45 silbermann kernel: EFLAGS: 00010286 Mar 28 04:02:45 silbermann kernel: eax: c0212a80 ebx: c1213c40 ecx: 00000000 edx: cf4705b4 Mar 28 04:02:45 silbermann kernel: esi: c1213c40 edi: 00000c7f ebp: 00000000 esp: c1423f20 Mar 28 04:02:45 silbermann kernel: ds: 0018 es: 0018 ss: 0018 Mar 28 04:02:45 silbermann kernel: Process kswapd (pid: 5, stackpage=c1423000) Mar 28 04:02:45 silbermann kernel: Stack: c02129b0 c1040000 c02129ec c385f5c0 c1213c40 c385f5c0 c1213c40 00000c7f Mar 28 04:02:45 silbermann kernel: 0000001a c012adca c1422000 00011fad 000001d0 c02129b0 c1423f88 c012b0d8 Mar 28 04:02:45 silbermann kernel: 0000bfb1 c027db60 00000014 000001d0 00000020 00000000 c012b150 c1423f88 Mar 28 04:02:45 silbermann kernel: Call Trace: [shrink_cache+538/816] [shrink_caches+88/112] [try_to_free_pages+96/240] [kswapd_balance_pgdat+91/176] [kswapd_balance+38/64] Mar 28 04:02:45 silbermann kernel: Call Trace: [<c012adca>] [<c012b0d8>] [<c012b150>] [<c012b29b>] [<c012b316>] Mar 28 04:02:45 silbermann kernel: [kswapd+161/192] [kswapd+0/192] [_stext+0/48] [kernel_thread+38/48] [kswapd+0/192] Mar 28 04:02:45 silbermann kernel: [<c012b461>] [<c012b3c0>] [<c0105000>] [<c0105536>] [<c012b3c0>] Mar 28 04:02:45 silbermann kernel: Mar 28 04:02:45 silbermann kernel: Code: 0f 0b 89 d8 2b 05 2c 2d 26 c0 c1 f8 06 3b 05 20 2d 26 c0 72 Mar 28 04:02:45 silbermann kernel: invalid operand: 0000 Mar 28 04:02:45 silbermann kernel: CPU: 0 Mar 28 04:02:45 silbermann kernel: EIP: 0010:[__free_pages_ok+42/560] Tainted: P Mar 28 04:02:45 silbermann kernel: EIP: 0010:[<c012b68a>] Tainted: P Mar 28 04:02:45 silbermann kernel: EFLAGS: 00010286 Mar 28 04:02:45 silbermann kernel: eax: c0212a80 ebx: c12a0d00 ecx: 00000000 edx: cf4705b4 Mar 28 04:02:45 silbermann kernel: esi: c12a0d00 edi: 00000c80 ebp: 00000000 esp: c7eabc84 Mar 28 04:02:45 silbermann kernel: ds: 0018 es: 0018 ss: 0018 Mar 28 04:02:45 silbermann kernel: Process msec_find (pid: 18356, stackpage=c7eab000) Mar 28 04:02:45 silbermann kernel: Stack: cb7a270c 0333f77e cf23b400 c385f540 c12a0d00 c385f540 c12a0d00 00000c80 Mar 28 04:02:45 silbermann kernel: 00000020 c012adca c7eaa000 00012059 000001d2 c02129b0 c7eabcec c012b0d8 Mar 28 04:02:45 silbermann kernel: 0000c01f c0167222 00000014 000001d2 00000020 00000000 c012b150 c7eabcec Mar 28 04:02:45 silbermann kernel: Call Trace: [shrink_cache+538/816] [shrink_caches+88/112] [search_by_key+2338/3552] [try_to_free_pages+96/240] [balance_classzone+65/416] Mar 28 04:02:45 silbermann kernel: Call Trace: [<c012adca>] [<c012b0d8>] [<c0167222>] [<c012b150>] [<c012bab1>] Mar 28 04:02:45 silbermann kernel: [__alloc_pages+410/720] [do_anonymous_page+52/160] [do_no_page+49/272] [handle_mm_fault+88/192] [reiserfs_iget+64/112] [reiserfs_iget+76/112] Mar 28 04:02:45 silbermann kernel: [<c012bdaa>] [<c01228c4>] [<c0122961>] [<c0122a98>] [<c0159ef0>] [<c0159efc>] Mar 28 04:02:45 silbermann kernel: [do_page_fault+382/1195] [do_page_fault+0/1195] [error_code+52/60] [file_read_actor+44/96] [do_generic_file_read+521/1088] [generic_file_read+122/288] Mar 28 04:02:45 silbermann kernel: [<c011222e>] [<c01120b0>] [<c0106dec>] [<c012571c>] [<c01252d9>] [<c01257ca>] Mar 28 04:02:45 silbermann kernel: [file_read_actor+0/96] [sys_read+149/240] [system_call+51/56] Mar 28 04:02:45 silbermann kernel: [<c01256f0>] [<c01307b5>] [<c0106cfb>] Mar 28 04:02:45 silbermann kernel: Mar 28 04:02:45 silbermann kernel: Code: 0f 0b 89 d8 2b 05 2c 2d 26 c0 c1 f8 06 3b 05 20 2d 26 c0 72 Mar 28 04:02:45 silbermann kernel: invalid operand: 0000 Mar 28 04:02:45 silbermann kernel: CPU: 0 Mar 28 04:02:45 silbermann kernel: EIP: 0010:[__free_pages_ok+42/560] Tainted: P Mar 28 04:02:45 silbermann kernel: EIP: 0010:[<c012b68a>] Tainted: P Mar 28 04:02:45 silbermann kernel: EFLAGS: 00010286 Mar 28 04:02:45 silbermann kernel: eax: c0212a80 ebx: c1178640 ecx: 00000000 edx: cf4705b4 Mar 28 04:02:45 silbermann kernel: esi: c1178640 edi: 00000c80 ebp: 00000000 esp: c16ffdc4 Mar 28 04:02:45 silbermann kernel: ds: 0018 es: 0018 ss: 0018 Mar 28 04:02:45 silbermann kernel: Process msec (pid: 18362, stackpage=c16ff000) Mar 28 04:02:45 silbermann kernel: Stack: c16ffe50 c16fff20 00000000 c385f4c0 c1178640 c385f4c0 c1178640 00000c80 Mar 28 04:02:45 silbermann kernel: 00000020 c012adca c16fe000 00012068 000001d2 c02129b0 c16ffe2c c012b0d8 Mar 28 04:02:45 silbermann kernel: 0000c029 c8cc7dc8 00000014 000001d2 00000020 00000000 c012b150 c16ffe2c Mar 28 04:02:45 silbermann kernel: Call Trace: [shrink_cache+538/816] [shrink_caches+88/112] [try_to_free_pages+96/240] [balance_classzone+65/416] [__alloc_pages+410/720] Mar 28 04:02:45 silbermann kernel: Call Trace: [<c012adca>] [<c012b0d8>] [<c012b150>] [<c012bab1>] [<c012bdaa>] Mar 28 04:02:45 silbermann kernel: [fast_copy_page+15/240] [do_wp_page+117/336] [handle_mm_fault+134/192] [do_page_fault+382/1195] [fput+175/208] [__mmdrop+35/39] Mar 28 04:02:45 silbermann kernel: [<c01e8c3f>] [<c01224f5>] [<c0122ac6>] [<c011222e>] [<c013144f>] [<c0114d43>] Mar 28 04:02:45 silbermann kernel: [sys_rt_sigaction+146/240] [filp_close+82/96] [do_page_fault+0/1195] [error_code+52/60] Mar 28 04:02:45 silbermann kernel: [<c011e712>] [<c0130382>] [<c01120b0>] [<c0106dec>] Mar 28 04:02:45 silbermann kernel: Mar 28 04:02:45 silbermann kernel: Code: 0f 0b 89 d8 2b 05 2c 2d 26 c0 c1 f8 06 3b 05 20 2d 26 c0 72 Then lot of binary stuff... -- Guillaume Rousse <[EMAIL PROTECTED]> GPG key http://lis.snv.jussieu.fr/~rousse/gpgkey.html
