Hi, below is the output of the kernel just before it goes down and crashes. I have to use "xm destroy" to kill it. I have tried the enable/disable the "Optimize for Size" setting in the kernel. I hopes that it''s some kind of compiler bug because of the "invalid opcode" thing. But actually I don''t a clue what this might be caused by. Do you have any idea? The crash is very reproducable. Regards, Sven -Os ------------[ cut here ]------------ kernel BUG at /usr/src/linux-2.6.28/drivers/block/xen-blkfront.c:243! invalid opcode: 0000 [#1] last sysfs file: /sys/kernel/uevent_seqnum CPU 0 Pid: 4841, comm: ebuild Not tainted 2.6.28.7 #5 RIP: e030:[<ffffffff803f22ef>] [<ffffffff803f22ef>] do_blkif_request+0x156/0x312 RSP: e02b:ffffffff806fee08 EFLAGS: 00010046 RAX: 0000000000000000 RBX: 0000000000000002 RCX: 0000000000000000 RDX: 0000000000000001 RSI: 000000000000000a RDI: 0000000000002fe0 RBP: ffff88001a96ba50 R08: ffffffff806337f0 R09: ffff88001a96d540 R10: 000000000000003e R11: ffffffff8024d9eb R12: ffff88001a8c66f0 R13: ffff88001a914000 R14: ffff88000ef2d7c0 R15: ffff88001664b788 FS: 00007f712f92a6d0(0000) GS:ffffffff80707000(0000) knlGS:0000000000000000 CS: e033 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f712e085024 CR3: 000000001a3de000 CR4: 0000000000000660 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 Process ebuild (pid: 4841, threadinfo ffff8800166aa000, task ffff8800167a4050) Stack: 0000000000000019 ffff88001a968800 ffff88001a914000 000005fc00000000 000000000000000f 0000000000000002 0000000000000001 ffff88001a968820 ffffffff00000001 ffff88001a968800 0000000000000000 ffff88001a96ba50 Call Trace: <IRQ> <0> [<ffffffff803a8d0a>] ? blk_invoke_request_fn+0x1e/0x3f [<ffffffff803f24c3>] ? kick_pending_request_queues+0x18/0x24 [<ffffffff803f2f7a>] ? blkif_interrupt+0x1a0/0x1c2 [<ffffffff80248d4b>] ? handle_IRQ_event+0x2c/0x61 [<ffffffff8024a538>] ? handle_level_irq+0x5c/0xa0 [<ffffffff802114d4>] ? do_IRQ+0x57/0xb3 [<ffffffff803d2c68>] ? xen_evtchn_do_upcall+0x89/0xeb [<ffffffff8049f22e>] ? xen_do_hypervisor_callback+0x1e/0x30 <EOI> <0>Code: 00 00 66 41 8b 46 2a 44 0f b7 e0 66 89 44 24 32 49 c1 e4 04 4d 03 66 48 c7 44 24 34 00 00 00 00 e9 f4 00 00 00 80 7d 01 0b 75 04 <0f> 0b eb fe 48 bf 00 00 00 00 00 1e 00 00 49 03 3c 24 48 b8 b7 RIP [<ffffffff803f22ef>] do_blkif_request+0x156/0x312 RSP <ffffffff806fee08> Kernel panic - not syncing: Fatal exception in interrupt -O2 ------------[ cut here ]------------ kernel BUG at /usr/src/linux-2.6.28/drivers/block/xen-blkfront.c:243! invalid opcode: 0000 [#1] last sysfs file: /sys/kernel/uevent_seqnum CPU 0 Pid: 4723, comm: ebuild Not tainted 2.6.28.7 #6 RIP: e030:[<ffffffff80449200>] [<ffffffff80449200>] do_blkif_request+0x2f0/0x380 RSP: e02b:ffffffff80783df8 EFLAGS: 00010046 RAX: 0000000000000000 RBX: ffff88000505da40 RCX: ffff88000505da40 RDX: ffff88001a8c65a0 RSI: 000000000000000a RDI: 0000000000000520 RBP: ffff88001a96b3c0 R08: 0000000000002900 R09: 0000000000000000 R10: 0000000000000000 R11: 000000000000001a R12: 0000000000000520 R13: 0000000000000002 R14: ffff88001a8c65b0 R15: 0000000000000000 FS: 00007fd37d7596d0(0000) GS:ffffffff8078c000(0000) knlGS:0000000000000000 CS: e033 DS: 0000 ES: 0000 CR0: 000000008005003b CR2: 00000000006c4900 CR3: 00000000162c9000 CR4: 0000000000000660 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 Process ebuild (pid: 4723, threadinfo ffff88001638c000, task ffff880016382450) Stack: 000000000000004c ffff88001a966800 ffff88001a914000 ffff88000501fd48 000000008027c3d2 0000000000000015 ffff88001a914000 00000000803f0804 ffff88000505da40 ffff88001a966820 ffffffff00000001 ffff88001a966800 Call Trace: <IRQ> <0> [<ffffffff803f0c73>] ? blk_invoke_request_fn+0x33/0x40 [<ffffffff804492a8>] ? kick_pending_request_queues+0x18/0x30 [<ffffffff80449ef3>] ? blkif_interrupt+0x1a3/0x1e0 [<ffffffff80255639>] ? handle_IRQ_event+0x39/0x80 [<ffffffff80257532>] ? handle_level_irq+0x52/0xc0 [<ffffffff80212a3c>] ? do_IRQ+0x5c/0xd0 [<ffffffff80423295>] ? xen_evtchn_do_upcall+0xa5/0xe0 [<ffffffff802379db>] ? __do_softirq+0xab/0x140 [<ffffffff805172ce>] ? xen_do_hypervisor_callback+0x1e/0x30 <EOI> <0>Code: fa d0 00 00 00 48 8d bc 07 88 00 00 00 e8 89 c2 fb ff 8b 7c 24 54 e8 20 93 fd ff ff 44 24 24 e9 3b fd ff ff 0f 0b eb fe 0f 1f 00 <0f> 0b eb fe 48 8b 7c 24 30 48 8b 54 24 30 b9 0b 00 00 00 48 c7 RIP [<ffffffff80449200>] do_blkif_request+0x2f0/0x380 RSP <ffffffff80783df8> Kernel panic - not syncing: Fatal exception in interrupt _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users