https://bugzilla.kernel.org/show_bug.cgi?id=194837 --- Comment #2 from Adam Williamson (adamw@xxxxxxxxxxxxxxxxx) --- I seem to get a different traceback every time this happens in local testing, aside from the times it just hangs - but it always seems to hang or crash at approximately the same point in the boot process, right after the "virtio-pci 0000:00:0a.0: virtio_pci: leaving for legacy driver" messages. The last one I got was: [ 1.327442] Kernel panic - not syncing: CRED: put_cred_rcu() sees ffff938bb584c000 with usage 1953655158 [ 1.327442] [ 1.328949] CPU: 1 PID: 21 Comm: rcuos/1 Not tainted 4.11.0-0.rc1.git0.1.fc26.x86_64 #1 [ 1.328949] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Bochs 01/01/2011 [ 1.331157] Call Trace: [ 1.331157] dump_stack+0x63/0x84 [ 1.331157] panic+0xe4/0x22d [ 1.331157] ? __prepare_to_swait+0x52/0x80 [ 1.331157] put_cred_rcu+0xb0/0xb0 [ 1.331157] rcu_nocb_kthread+0x15f/0x500 [ 1.335141] ? get_state_synchronize_sched+0x20/0x20 [ 1.335141] kthread+0x11e/0x140 [ 1.335141] ? kthread_park+0x90/0x90 [ 1.335141] ret_from_fork+0x2c/0x40 [ 1.335141] Kernel Offset: 0x34000000 from 0xffffffff81000000 (relocation range: 0xffffffff80000000-0xffffffffbfffffff) [ 1.335141] ---[ end Kernel panic - not syncing: CRED: put_cred_rcu() sees ffff938bb584c000 with usage 1953655158 aside from that I've seen: [ 1.419027] Call Trace: [ 1.435026] <IRQ> [ 1.435026] mpage_end_io+0x39/0x60 [ 1.435026] bio_endio+0x54/0x60 [ 1.435026] blk_update_request+0x8d/0x340 [ 1.435026] blk_mq_end_request+0x1a/0x80 [ 1.435026] virtblk_request_done+0x45/0x80 [virtio_blk] [ 1.435026] __blk_mq_complete_request+0xc9/0x120 [ 1.435026] blk_mq_complete_request+0x1e/0x20 [ 1.435026] virtblk_done+0x74/0x100 [virtio_blk] [ 1.435026] vring_interrupt+0x34/0x80 [virtio_ring] [ 1.435026] __handle_irq_event_percpu+0x3f/0x1a0 [ 1.435026] handle_irq_event_percpu+0x32/0x80 [ 1.435026] handle_irq_event+0x2c/0x50 [ 1.435026] handle_edge_irq+0x6f/0x120 [ 1.435026] handle_irq+0xad/0x130 [ 1.435026] do_IRQ+0x46/0xd0 [ 1.435026] common_interrupt+0x93/0x93 [ 1.435026] RIP: 0010:native_safe_halt+0x6/0x10 [ 1.435026] RSP: 0018:ffffffffaae03de0 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff7e [ 1.435026] RAX: 0000000000000000 RBX: ffffffffaae104c0 RCX: 0000000000000000 [ 1.435026] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 [ 1.435026] RBP: ffffffffaae03de0 R08: 000000001c32e304 R09: ffff883d767b1f00 [ 1.435026] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 1.435026] R13: ffffffffaae104c0 R14: 0000000000000000 R15: 0000000000000000 [ 1.435026] </IRQ> [ 1.435026] default_idle+0x20/0xe0 [ 1.435026] arch_cpu_idle+0xf/0x20 [ 1.435026] default_idle_call+0x23/0x30 [ 1.435026] do_idle+0x170/0x200 [ 1.435026] cpu_startup_entry+0x71/0x80 [ 1.435026] rest_init+0x77/0x80 [ 1.435026] start_kernel+0x45a/0x47b [ 1.435026] ? early_idt_handler_array+0x120/0x120 [ 1.435026] x86_64_start_reservations+0x24/0x26 [ 1.435026] x86_64_start_kernel+0x13c/0x15f [ 1.435026] start_cpu+0x14/0x14 [ 1.435026] Code: ff c3 b8 f8 ff ff ff c3 66 0f 1f 84 00 00 00 00 00 66 66 66 66 90 55 48 89 e5 53 48 89 fb 48 83 ec 08 40 84 f6 75 12 85 d2 75 21 <48> 8b 47 20 a8 01 75 66 f0 80 0f 08 eb 2a 85 d2 75 35 48 89 df [ 1.435026] RIP: page_endio+0x1a/0xa0 RSP: ffff883dbfc03d68 [ 1.435026] CR2: 0000000000000020 [ 1.435026] ---[ end trace cf261be33b5d0d05 ]--- [ 1.435026] Kernel panic - not syncing: Fatal exception in interrupt [ 1.435026] Kernel Offset: 0x29000000 from 0xffffffff81000000 (relocation range: 0xffffffff80000000-0xffffffffbfffffff) [ 1.435026] ---[ end Kernel panic - not syncing: Fatal exception in interrupt and: [ 1.530432] general protection fault: 0000 [#1] SMP [ 1.531004] Modules linked in: virtio_scsi(+) virtio_console qxl drm_kms_helper ttm drm crc32c_intel sym53c8xx serio_raw scsi_transport_spi virtio_pci virtio_ring virtio ata_generic pata_acpi qemu_fw_cfg [ 1.531004] CPU: 0 PID: 314 Comm: systemd-udevd Not tainted 4.11.0-0.rc1.git0.1.fc26.x86_64 #1 [ 1.531004] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Bochs 01/01/2011 [ 1.531004] task: ffff9c49760c0000 task.stack: ffffbfbcc05d8000 [ 1.531004] RIP: 0010:kmem_cache_alloc+0x84/0x1b0 [ 1.531004] RSP: 0018:ffffbfbcc05dbe60 EFLAGS: 00010246 [ 1.531004] RAX: 2d316f6974726976 RBX: 00000000014000c0 RCX: 00007fcf9e251b30 [ 1.531004] RDX: 0000000000002192 RSI: 00000000014000c0 RDI: 000000000001d780 [ 1.531004] RBP: ffffbfbcc05dbe90 R08: ffff9c49bfc1d780 R09: 0000000000000077 [ 1.531004] R10: 0000000000000000 R11: 0000000000000000 R12: 00000000014000c0 [ 1.531004] R13: ffff9c49bd098140 R14: 2d316f6974726976 R15: ffff9c49bd098140 [ 1.531004] FS: 00007fcf9f3398c0(0000) GS:ffff9c49bfc00000(0000) knlGS:0000000000000000 [ 1.531004] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 1.531004] CR2: 00007ffe1682ffc8 CR3: 000000003617c000 CR4: 00000000000006f0 [ 1.531004] Call Trace: [ 1.531004] ? prepare_creds+0x26/0xf0 [ 1.531004] prepare_creds+0x26/0xf0 [ 1.531004] SyS_access+0x41/0x230 [ 1.531004] do_syscall_64+0x67/0x170 [ 1.531004] entry_SYSCALL64_slow_path+0x25/0x25 [ 1.531004] RIP: 0033:0x7fcf9df8651a [ 1.531004] RSP: 002b:00007ffe16830f88 EFLAGS: 00000246 ORIG_RAX: 0000000000000015 [ 1.531004] RAX: ffffffffffffffda RBX: 0000556016def330 RCX: 00007fcf9df8651a [ 1.531004] RDX: 00316f6974726976 RSI: 0000000000000000 RDI: 00007ffe16830f90 [ 1.531004] RBP: 00007ffe16831030 R08: 0000000000001000 R09: 0000000000000077 [ 1.531004] R10: 00007fcf9e251b30 R11: 0000000000000246 R12: 00007ffe16830f90 [ 1.531004] R13: 0000556016dea880 R14: 00000000ffffffea R15: 0000556015e1baf8 [ 1.531004] Code: 49 83 78 10 00 4d 8b 30 0f 84 fe 00 00 00 4d 85 f6 0f 84 f5 00 00 00 49 63 47 20 49 8b 3f 4c 01 f0 40 f6 c7 0f 0f 85 21 01 00 00 <48> 8b 18 48 8d 4a 01 4c 89 f0 65 48 0f c7 0f 0f 94 c0 84 c0 74 [ 1.531004] RIP: kmem_cache_alloc+0x84/0x1b0 RSP: ffffbfbcc05dbe60 [ 1.561110] ---[ end trace b9396075a1c8bec4 ]--- that one actually shows *12* general protection faults, all with the same traceback. -- You are receiving this mail because: You are the assignee for the bug.
