Public bug reported:
I run a Ubuntu Hardy i386 + Xen + drbd8 + ocfs2 cluster that frequently
(every few hours, even when completely idle) reports an Oops. OCFS2 is
already disabled, it seems to be linked to drbd8 being started. The
drbd8 resource is not in use though, not even mounted on any box.
[ 5545.027304] invalid opcode: 0000 [#1] SMP
[ 5545.027319] Modules linked in: drbd cn bridge sbs container battery sbshc
video output ac dock iptable_filter ip_tables x_tables parpe
[ 5545.027410]
[ 5545.027414] Pid: 14947, comm: sshd Not tainted (2.6.24-17-xen #1)
[ 5545.027419] EIP: 0061:[<c194e0e9>] EFLAGS: 00210216 CPU: 0
[ 5545.027426] EIP is at 0xc194e0e9
[ 5545.027429] EAX: c18d3c00 EBX: c18d7800 ECX: 00000004 EDX: 00000000
[ 5545.027434] ESI: 00000002 EDI: 40040000 EBP: 00000000 ESP: daecbe94
[ 5545.027438] DS: 007b ES: 007b FS: 00d8 GS: 0000 SS: 0069
[ 5545.027443] Process sshd (pid: 14947, ti=daeca000 task=db61c7d0
task.ti=daeca000)
[ 5545.027447] Stack: c01623a5 00000000 c03fd800 daecbef0 00000002 00000008
daecbed0 c0162456
[ 5545.027463] c196f960 c1553938 c03fd800 00000008 c0165997 00000008
00000000 00000008
[ 5545.027479] 00000000 c192ade0 c18f40e0 c1822400 c18eddc0 c1971780
c1932060 c18d3c00
[ 5545.027521] Call Trace:
[ 5545.027525] [<c01623a5>] free_hot_cold_page+0x195/0x220
[ 5545.027541] [<c0162456>] __pagevec_free+0x26/0x30
[ 5545.027551] [<c0165997>] release_pages+0x137/0x160
[ 5545.027563] [<c017a5f4>] free_pages_and_swap_cache+0x74/0xa0
[ 5545.027573] [<c01737b7>] exit_mmap+0xe7/0x100
[ 5545.027584] [<c0124303>] mmput+0x23/0x80
[ 5545.027592] [<c0129d95>] do_exit+0x165/0x8b0
[ 5545.027602] [<c0185dff>] vfs_read+0x15f/0x170
[ 5545.027610] [<c019b9c3>] mntput_no_expire+0x13/0x70
[ 5545.027621] [<c012a50a>] do_group_exit+0x2a/0xa0
[ 5545.027631] [<c0105832>] syscall_call+0x7/0xb
[ 5545.027641] [<c0320000>] vcc_create+0x90/0x110
[ 5545.027651] =======================
[ 5545.027654] Code: 20 00 00 00 00 40 01 00 00 00 ff ff ff ff 00 00 00 00 00
00 00 00 00 00 00 00 00 01 10 00 00 02 20 00 00 20 00 40 0
[ 5545.027736] EIP: [<c194e0e9>] 0xc194e0e9 SS:ESP 0069:daecbe94
[ 5545.028899] ---[ end trace 880e03764f078517 ]---
[ 5545.028906] Fixing recursive fault but reboot is needed!
The process is different each time but free_hot_cold_cache is always at
the top.
** Affects: linux (Ubuntu)
Importance: Undecided
Status: New
--
[hardy][xen] Oops in free_hot_cold_cache, probably drbd8-related
https://bugs.launchpad.net/bugs/235783
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