====================================== | xx__-> echo $? | 0 | xx__-> [ 1108.413191][ T7196] Mirror/redirect action on | [ 1214.592718][ C3] irq 4: nobody cared (try booting with the "irqpoll" option) [ 1214.593377][ C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 1214.593777][ C3] Call Trace: [ 1214.593960][ C3] [ 1214.594071][ C3] dump_stack_lvl (lib/dump_stack.c:122) [ 1214.594253][ C3] __report_bad_irq (kernel/irq/spurious.c:214) [ 1214.594417][ C3] note_interrupt (kernel/irq/spurious.c:423) [ 1214.594587][ C3] handle_irq_event (kernel/irq/handle.c:198 kernel/irq/handle.c:210) [ 1214.594790][ C3] handle_edge_irq (kernel/irq/chip.c:833) [ 1214.594959][ C3] __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) [ 1214.595127][ C3] common_interrupt (arch/x86/kernel/irq.c:278 (discriminator 13)) [ 1214.595331][ C3] asm_common_interrupt (./arch/x86/include/asm/idtentry.h:693) [ 1214.595510][ C3] RIP: 0010:handle_softirqs (kernel/softirq.c:540) [ 1214.595729][ C3] Code: c8 83 83 1c 0a 00 00 01 c7 44 24 18 0a 00 00 00 48 89 44 24 10 65 66 c7 05 cb ad e8 7b 00 00 e8 4e 98 38 00 fb bb ff ff ff ff <49> c7 c2 c0 a0 a0 87 41 0f bc dc 83 c3 01 4c 89 d5 0f 84 b1 00 00 All code ======== 0: c8 83 83 1c enter $0x8383,$0x1c 4: 0a 00 or (%rax),%al 6: 00 01 add %al,(%rcx) 8: c7 44 24 18 0a 00 00 movl $0xa,0x18(%rsp) f: 00 10: 48 89 44 24 10 mov %rax,0x10(%rsp) 15: 65 66 c7 05 cb ad e8 movw $0x0,%gs:0x7be8adcb(%rip) # 0x7be8adea 1c: 7b 00 00 1f: e8 4e 98 38 00 call 0x389872 24: fb sti 25: bb ff ff ff ff mov $0xffffffff,%ebx 2a:* 49 c7 c2 c0 a0 a0 87 mov $0xffffffff87a0a0c0,%r10 <-- trapping instruction 31: 41 0f bc dc bsf %r12d,%ebx 35: 83 c3 01 add $0x1,%ebx 38: 4c 89 d5 mov %r10,%rbp 3b: 0f .byte 0xf 3c: 84 .byte 0x84 3d: b1 00 mov $0x0,%cl ... Code starting with the faulting instruction =========================================== 0: 49 c7 c2 c0 a0 a0 87 mov $0xffffffff87a0a0c0,%r10 7: 41 0f bc dc bsf %r12d,%ebx b: 83 c3 01 add $0x1,%ebx e: 4c 89 d5 mov %r10,%rbp 11: 0f .byte 0xf 12: 84 .byte 0x84 13: b1 00 mov $0x0,%cl ... [ 1214.596301][ C3] RSP: 0018:ffffc90000298f80 EFLAGS: 00000206 [ 1214.596540][ C3] RAX: 0000000003631482 RBX: 00000000ffffffff RCX: 1ffffffff13b826b [ 1214.596816][ C3] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff841b1ae2 [ 1214.597054][ C3] RBP: ffffc9000280fa08 R08: 0000000000000001 R09: fffffbfff13b3318 [ 1214.597353][ C3] R10: ffffffff89d998c7 R11: ffff8880361bdd00 R12: 0000000000000200 [ 1214.597624][ C3] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 1214.597905][ C3] ? handle_softirqs (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:97 kernel/softirq.c:538) [ 1214.598084][ C3] irq_exit_rcu (kernel/softirq.c:589 kernel/softirq.c:428 kernel/softirq.c:637 kernel/softirq.c:649) [ 1214.598211][ C3] sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1043 arch/x86/kernel/apic/apic.c:1043) [ 1214.598395][ C3] [ 1214.598495][ C3] [ 1214.598584][ C3] asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:702) [ 1214.598803][ C3] RIP: 0010:_raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) [ 1214.599030][ C3] Code: 10 e8 01 fb 8c fd 48 89 ef e8 a9 6b 8d fd 81 e3 00 02 00 00 75 1d 9c 58 f6 c4 02 75 29 48 85 db 74 01 fb 65 ff 0d c5 39 61 79 <74> 0e 5b 5d c3 cc cc cc cc e8 5f 24 b1 fd eb dc 0f 1f 44 00 00 5b All code ======== 0: 10 e8 adc %ch,%al 2: 01 fb add %edi,%ebx 4: 8c fd mov %?,%ebp 6: 48 89 ef mov %rbp,%rdi 9: e8 a9 6b 8d fd call 0xfffffffffd8d6bb7 e: 81 e3 00 02 00 00 and $0x200,%ebx 14: 75 1d jne 0x33 16: 9c pushf 17: 58 pop %rax 18: f6 c4 02 test $0x2,%ah 1b: 75 29 jne 0x46 1d: 48 85 db test %rbx,%rbx 20: 74 01 je 0x23 22: fb sti 23: 65 ff 0d c5 39 61 79 decl %gs:0x796139c5(%rip) # 0x796139ef 2a:* 74 0e je 0x3a <-- trapping instruction 2c: 5b pop %rbx 2d: 5d pop %rbp 2e: c3 ret 2f: cc int3 30: cc int3 31: cc int3 32: cc int3 33: e8 5f 24 b1 fd call 0xfffffffffdb12497 38: eb dc jmp 0x16 3a: 0f 1f 44 00 00 nopl 0x0(%rax,%rax,1) 3f: 5b pop %rbx Code starting with the faulting instruction =========================================== 0: 74 0e je 0x10 2: 5b pop %rbx 3: 5d pop %rbp 4: c3 ret 5: cc int3 6: cc int3 7: cc int3 8: cc int3 9: e8 5f 24 b1 fd call 0xfffffffffdb1246d e: eb dc jmp 0xffffffffffffffec 10: 0f 1f 44 00 00 nopl 0x0(%rax,%rax,1) 15: 5b pop %rbx [ 1214.599628][ C3] RSP: 0018:ffffc9000280fab8 EFLAGS: 00000286 [ 1214.599845][ C3] RAX: 0000000000000002 RBX: 0000000000000200 RCX: 1ffffffff13b826b [ 1214.600090][ C3] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff86a28ed1 [ 1214.600328][ C3] RBP: ffffffff8a682260 R08: 0000000000000001 R09: fffffbfff13b3318 [ 1214.600563][ C3] R10: ffffffff89d998c7 R11: 0000000000000003 R12: ffffffff8a682368 [ 1214.600836][ C3] R13: ffff888007a7a800 R14: ffffffff8a682260 R15: 0000000000000286 [ 1214.601084][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) [ 1214.601325][ C3] uart_write (drivers/tty/serial/serial_core.c:74 drivers/tty/serial/serial_core.c:634) [ 1214.601452][ C3] process_output_block (drivers/tty/n_tty.c:574) [ 1214.601628][ C3] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) [ 1214.601862][ C3] n_tty_write (drivers/tty/n_tty.c:2390) [ 1214.602044][ C3] ? __pfx_n_tty_write (drivers/tty/n_tty.c:2360) [ 1214.602221][ C3] ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 52)) [ 1214.602391][ C3] ? __pfx_woken_wake_function (kernel/sched/wait.c:439) [ 1214.602584][ C3] ? iterate_tty_write (drivers/tty/tty_io.c:954 drivers/tty/tty_io.c:973) [ 1214.602741][ C3] ? lock_acquire (kernel/locking/lockdep.c:5732) [ 1214.602952][ C3] ? iterate_tty_write (drivers/tty/tty_io.c:954 drivers/tty/tty_io.c:973) [ 1214.603118][ C3] iterate_tty_write (drivers/tty/tty_io.c:1021) [ 1214.603300][ C3] ? tty_ldisc_ref_wait (drivers/tty/tty_ldisc.c:244) [ 1214.603462][ C3] file_tty_write.constprop.0 (drivers/tty/tty_io.c:1096) [ 1214.603642][ C3] vfs_write (fs/read_write.c:497 fs/read_write.c:590) [ 1214.603773][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5724) [ 1214.603973][ C3] ? __pfx_vfs_write (fs/read_write.c:571) [ 1214.604161][ C3] ? clockevents_program_event (kernel/time/clockevents.c:326) [ 1214.604327][ C3] ? __fget_light (./include/linux/atomic/atomic-arch-fallback.h:479 ./include/linux/atomic/atomic-instrumented.h:50 fs/file.c:1141) [ 1214.604489][ C3] ksys_write (fs/read_write.c:643) [ 1214.604609][ C3] ? __pfx_ksys_write (fs/read_write.c:633) [ 1214.604775][ C3] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) [ 1214.604934][ C3] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) [ 1214.605130][ C3] RIP: 0033:0x7f7135d20957 [ 1214.605297][ C3] 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 [ 1214.605849][ C3] RSP: 002b:00007ffde39eb818 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 1214.606094][ C3] RAX: ffffffffffffffda RBX: 000055b8245eb2b0 RCX: 00007f7135d20957 [ 1214.606329][ C3] RDX: 0000000000000001 RSI: 000055b8245eb2b0 RDI: 0000000000000001 [ 1214.606602][ C3] RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000002000 [ 1214.606839][ C3] R10: 0000000000000001 R11: 0000000000000246 R12: 000055b8245d65e0 Finger prints: __report_bad_irq:note_interrupt:handle_irq_event:handle_edge_irq:__common_interrupt