====================================== | | WAIT TIMEOUT stdout | | [ 1458.142739][ C3] irq 4: nobody cared (try booting with the "irqpoll" option) [ 1458.143370][ C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 1458.143737][ C3] Call Trace: [ 1458.143866][ C3] [ 1458.143958][ C3] dump_stack_lvl (lib/dump_stack.c:117) [ 1458.144148][ C3] __report_bad_irq (kernel/irq/spurious.c:214) [ 1458.144329][ C3] note_interrupt (kernel/irq/spurious.c:423) [ 1458.144500][ C3] handle_irq_event (kernel/irq/handle.c:198 kernel/irq/handle.c:210) [ 1458.144666][ C3] handle_edge_irq (kernel/irq/chip.c:833) [ 1458.144839][ C3] __common_interrupt (./include/linux/irqdesc.h:161 arch/x86/kernel/irq.c:238 arch/x86/kernel/irq.c:257) [ 1458.145013][ C3] common_interrupt (arch/x86/kernel/irq.c:247 (discriminator 14)) [ 1458.145184][ C3] [ 1458.145273][ C3] [ 1458.145359][ C3] asm_common_interrupt (./arch/x86/include/asm/idtentry.h:693) [ 1458.145529][ C3] RIP: 0010:_raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) [ 1458.145750][ C3] Code: 10 e8 11 49 9b fd 48 89 ef e8 49 b9 9b 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 f5 be 8f 68 <74> 0e 5b 5d c3 cc cc cc cc e8 3f b3 be fd eb dc 0f 1f 44 00 00 5b All code ======== 0: 10 e8 adc %ch,%al 2: 11 49 9b adc %ecx,-0x65(%rcx) 5: fd std 6: 48 89 ef mov %rbp,%rdi 9: e8 49 b9 9b fd call 0xfffffffffd9bb957 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 f5 be 8f 68 decl %gs:0x688fbef5(%rip) # 0x688fbf1f 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 3f b3 be fd call 0xfffffffffdbeb377 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 3f b3 be fd call 0xfffffffffdbeb34d e: eb dc jmp 0xffffffffffffffec 10: 0f 1f 44 00 00 nopl 0x0(%rax,%rax,1) 15: 5b pop %rbx [ 1458.146332][ C3] RSP: 0018:ffffc900010afa80 EFLAGS: 00000286 [ 1458.146827][ C3] RAX: 0000000000000002 RBX: 0000000000000200 RCX: 1ffffffff35286f0 [ 1458.147077][ C3] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff97740921 [ 1458.147325][ C3] RBP: ffffffff9b2241a0 R08: 0000000000000001 R09: fffffbfff35238b0 [ 1458.147583][ C3] R10: ffffffff9a91c587 R11: 0000000000000000 R12: 0000000000000624 [ 1458.147836][ C3] R13: ffffffff9b2242a8 R14: ffffffff9b2241a0 R15: ffff888003540000 [ 1458.148093][ C3] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) [ 1458.148313][ C3] uart_write (drivers/tty/serial/serial_core.c:74 drivers/tty/serial/serial_core.c:616) [ 1458.148447][ C3] process_output_block (drivers/tty/n_tty.c:574) [ 1458.148616][ C3] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) [ 1458.148830][ C3] n_tty_write (drivers/tty/n_tty.c:2380) [ 1458.149010][ C3] ? __pfx_n_tty_write (drivers/tty/n_tty.c:2350) [ 1458.149175][ C3] ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 52)) [ 1458.149343][ C3] ? __pfx_woken_wake_function (kernel/sched/wait.c:439) [ 1458.149509][ C3] ? iterate_tty_write (drivers/tty/tty_io.c:954 drivers/tty/tty_io.c:973) [ 1458.149678][ C3] ? lock_acquire (kernel/locking/lockdep.c:5727) [ 1458.149848][ C3] ? iterate_tty_write (drivers/tty/tty_io.c:954 drivers/tty/tty_io.c:973) [ 1458.150027][ C3] iterate_tty_write (drivers/tty/tty_io.c:1021) [ 1458.150212][ C3] ? tty_ldisc_ref_wait (drivers/tty/tty_ldisc.c:244) [ 1458.150385][ C3] file_tty_write.constprop.0 (drivers/tty/tty_io.c:1096) [ 1458.150567][ C3] vfs_write (./include/linux/fs.h:2108 fs/read_write.c:497 fs/read_write.c:590) [ 1458.150698][ C3] ? __pfx___lock_release (kernel/locking/lockdep.c:5406) [ 1458.150869][ C3] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5719) [ 1458.151042][ C3] ? __pfx_vfs_write (fs/read_write.c:571) [ 1458.151221][ C3] ? __fget_light (./include/linux/atomic/atomic-arch-fallback.h:479 ./include/linux/atomic/atomic-instrumented.h:50 fs/file.c:1145) [ 1458.151396][ C3] ksys_write (fs/read_write.c:643) [ 1458.151531][ C3] ? __pfx_ksys_write (fs/read_write.c:633) [ 1458.151704][ C3] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) [ 1458.151873][ C3] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:129) [ 1458.152077][ C3] RIP: 0033:0x7f08952f4957 [ 1458.152254][ 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 [ 1458.152836][ C3] RSP: 002b:00007ffdecb09f68 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 1458.153094][ C3] RAX: ffffffffffffffda RBX: 0000562fa8c821b0 RCX: 00007f08952f4957 [ 1458.153340][ C3] RDX: 0000000000000001 RSI: 0000562fa8c821b0 RDI: 0000000000000001 [ 1458.153586][ C3] RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000002000 [ 1458.153829][ C3] R10: 0000000000000001 R11: 0000000000000246 R12: 0000562fa8c6e590 Finger prints: dump_stack_lvl:__report_bad_irq:note_interrupt:handle_irq_event