====================================== | xx__-> echo $? | 0 | xx__-> [ 419.656680] Mirror/redirect action on | [ 430.638589] irq 4: nobody cared (try booting with the "irqpoll" option) [ 430.638811] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 430.638934] Call Trace: [ 430.638973] <IRQ> [ 430.639005] dump_stack_lvl (lib/dump_stack.c:117) [ 430.639058] __report_bad_irq (kernel/irq/spurious.c:214) [ 430.639102] note_interrupt (kernel/irq/spurious.c:423) [ 430.639148] handle_irq_event (kernel/irq/handle.c:198 kernel/irq/handle.c:210) [ 430.639186] handle_edge_irq (kernel/irq/chip.c:833) [ 430.639223] __common_interrupt (./include/linux/irqdesc.h:173 arch/x86/kernel/irq.c:247 arch/x86/kernel/irq.c:259 arch/x86/kernel/irq.c:285) [ 430.639266] common_interrupt (arch/x86/kernel/irq.c:278 (discriminator 14)) [ 430.639314] </IRQ> [ 430.639340] <TASK> [ 430.639366] asm_common_interrupt (./arch/x86/include/asm/idtentry.h:693) [ 430.639410] RIP: 0010:_raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) [ 430.639471] Code: 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 0f 1f 44 00 00 c6 07 00 f7 c6 00 02 00 00 74 01 fb 65 ff 0d ec 15 2b 43 <74> 05 c3 cc cc cc cc 0f 1f 44 00 00 c3 cc cc cc cc 0f 1f 00 90 90 All code ======== 0: 90 nop 1: 90 nop 2: 90 nop 3: 90 nop 4: 90 nop 5: 90 nop 6: 90 nop 7: 90 nop 8: 90 nop 9: 90 nop a: 90 nop b: 90 nop c: 90 nop d: 90 nop e: f3 0f 1e fa endbr64 12: 0f 1f 44 00 00 nopl 0x0(%rax,%rax,1) 17: c6 07 00 movb $0x0,(%rdi) 1a: f7 c6 00 02 00 00 test $0x200,%esi 20: 74 01 je 0x23 22: fb sti 23: 65 ff 0d ec 15 2b 43 decl %gs:0x432b15ec(%rip) # 0x432b1616 2a:* 74 05 je 0x31 <-- trapping instruction 2c: c3 ret 2d: cc int3 2e: cc int3 2f: cc int3 30: cc int3 31: 0f 1f 44 00 00 nopl 0x0(%rax,%rax,1) 36: c3 ret 37: cc int3 38: cc int3 39: cc int3 3a: cc int3 3b: 0f 1f 00 nopl (%rax) 3e: 90 nop 3f: 90 nop Code starting with the faulting instruction =========================================== 0: 74 05 je 0x7 2: c3 ret 3: cc int3 4: cc int3 5: cc int3 6: cc int3 7: 0f 1f 44 00 00 nopl 0x0(%rax,%rax,1) c: c3 ret d: cc int3 e: cc int3 f: cc int3 10: cc int3 11: 0f 1f 00 nopl (%rax) 14: 90 nop 15: 90 nop [ 430.639622] RSP: 0018:ffffb04c88613d60 EFLAGS: 00000286 [ 430.639679] RAX: 0000000000000000 RBX: 0000000000000001 RCX: 0000000000000017 [ 430.639745] RDX: ffffffffbc97085d RSI: 0000000000000286 RDI: ffffffffbe2e7500 [ 430.639814] RBP: ffff896801ec8000 R08: 0000006450551c0e R09: 0000000000000001 [ 430.639885] R10: ffff8968023da5f8 R11: 0000000000000000 R12: ffffffffbe2e7500 [ 430.639955] R13: 0000000000000286 R14: ffff8968023da800 R15: ffff8968023da400 [ 430.640030] ? rpm_suspend (./arch/x86/include/asm/jump_label.h:27 ./include/linux/jump_label.h:207 ./include/trace/events/rpm.h:84 drivers/base/power/runtime.c:718) [ 430.640080] uart_write (drivers/tty/serial/serial_core.c:74 drivers/tty/serial/serial_core.c:634) [ 430.640124] n_tty_write (drivers/tty/n_tty.c:574 drivers/tty/n_tty.c:2389) [ 430.640164] ? __pfx_woken_wake_function (kernel/sched/wait.c:439) [ 430.640217] file_tty_write.constprop.0 (drivers/tty/tty_io.c:1021 drivers/tty/tty_io.c:1096) [ 430.640273] vfs_write (fs/read_write.c:497 fs/read_write.c:590) [ 430.640321] ksys_write (fs/read_write.c:643) [ 430.640361] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) [ 430.640413] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) [ 430.640469] RIP: 0033:0x7ff3ef6f3957 [ 430.640511] Code: 0b 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24 All code ======== 0: 0b 00 or (%rax),%eax 2: f7 d8 neg %eax 4: 64 89 02 mov %eax,%fs:(%rdx) 7: 48 c7 c0 ff ff ff ff mov $0xffffffffffffffff,%rax e: eb b7 jmp 0xffffffffffffffc7 10: 0f 1f 00 nopl (%rax) 13: f3 0f 1e fa endbr64 17: 64 8b 04 25 18 00 00 mov %fs:0x18,%eax 1e: 00 1f: 85 c0 test %eax,%eax 21: 75 10 jne 0x33 23: b8 01 00 00 00 mov $0x1,%eax 28: 0f 05 syscall 2a:* 48 3d 00 f0 ff ff cmp $0xfffffffffffff000,%rax <-- trapping instruction 30: 77 51 ja 0x83 32: c3 ret 33: 48 83 ec 28 sub $0x28,%rsp 37: 48 89 54 24 18 mov %rdx,0x18(%rsp) 3c: 48 rex.W 3d: 89 .byte 0x89 3e: 74 24 je 0x64 Code starting with the faulting instruction =========================================== 0: 48 3d 00 f0 ff ff cmp $0xfffffffffffff000,%rax 6: 77 51 ja 0x59 8: c3 ret 9: 48 83 ec 28 sub $0x28,%rsp d: 48 89 54 24 18 mov %rdx,0x18(%rsp) 12: 48 rex.W 13: 89 .byte 0x89 14: 74 24 je 0x3a [ 430.640672] RSP: 002b:00007ffecd77bc88 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 430.640744] RAX: ffffffffffffffda RBX: 0000560b820ddfd0 RCX: 00007ff3ef6f3957 [ 430.640813] RDX: 0000000000000001 RSI: 0000560b820ddfd0 RDI: 0000000000000001 [ 430.640884] RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000002000 [ 430.640955] R10: 0000000000000001 R11: 0000000000000246 R12: 0000560b820ca560 Finger prints: __report_bad_irq:note_interrupt:handle_irq_event:handle_edge_irq:__common_interrupt