====================================== | # [ 12.241029][ T158] softirqs last disabled at (130910): restore_fpregs_from_user (./include/linux/bottom_half.h:20 (discriminator 2) ./arch/x86/include/asm/fpu/api.h:69 (discriminator 2) arch/x86/kernel/fpu/signal.c:277 (discriminator 2)) | # [ 12.241031][ T158] Preemption disabled at: | # [ 12.241032][ T158] vprintk_emit (kernel/printk/printk.c:2471) | # [ 12.241041][ T158] Tainted: [W]=WARN # [ 12.241042][ T158] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 # [ 12.241044][ T158] Call Trace: # [ 12.241045][ T158] # [ 12.241047][ T158] dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120) # [ 12.241052][ T158] ? vprintk_emit (kernel/printk/printk.c:2471) # [ 12.241054][ T158] __might_resched.cold (kernel/sched/core.c:9234) # [ 12.241058][ T158] ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3)) # [ 12.241061][ T158] ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439) # [ 12.241066][ T158] __kmalloc_noprof (./include/linux/sched/mm.h:322 (discriminator 2) mm/slub.c:4636 (discriminator 2) mm/slub.c:4974 (discriminator 2) mm/slub.c:5413 (discriminator 2) mm/slub.c:5439 (discriminator 2)) # [ 12.241068][ T158] ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429) # [ 12.241074][ T158] ? do_raw_spin_unlock (./include/linux/instrumented.h:82 ./include/linux/atomic/atomic-instrumented.h:32 ./include/asm-generic/qspinlock.h:58 kernel/locking/spinlock_debug.c:101 kernel/locking/spinlock_debug.c:141) # [ 12.241076][ T158] alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429) # [ 12.241079][ T158] put_chars (drivers/char/virtio_console.c:1176) # [ 12.241082][ T158] ? __send_to_port (drivers/char/virtio_console.c:654) # [ 12.241083][ T158] ? printk_get_next_message (kernel/printk/printk.c:3072) # [ 12.241086][ T158] ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380) # [ 12.241089][ T158] ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2)) # [ 12.241093][ T158] hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2)) # [ 12.241096][ T158] ? __lock_acquire (kernel/locking/lockdep.c:5254) # [ 12.241097][ T158] ? __lock_acquire (kernel/locking/lockdep.c:5254) # [ 12.241101][ T158] ? hvc_write (drivers/tty/hvc/hvc_console.c:501) # [ 12.241104][ T158] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) # [ 12.241107][ T158] ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22)) # [ 12.241111][ T158] console_emit_next_record (kernel/printk/printk.c:3183) # [ 12.241114][ T158] ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20) # [ 12.241118][ T158] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) # [ 12.241121][ T158] ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22)) # [ 12.241124][ T158] console_flush_one_record (kernel/printk/printk.c:3268) # [ 12.241128][ T158] ? console_emit_next_record (kernel/printk/printk.c:3150) # [ 12.241129][ T158] ? __lock_acquire (kernel/locking/lockdep.c:5254) # [ 12.241134][ T158] console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420) # [ 12.241137][ T158] ? console_flush_one_record (kernel/printk/printk.c:3316) # [ 12.241138][ T158] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) # [ 12.241140][ T158] ? lock_acquire (kernel/locking/lockdep.c:5913) # [ 12.241143][ T158] ? __down_trylock_console_sem (kernel/printk/printk.c:334) # [ 12.241145][ T158] ? vprintk_emit (kernel/printk/printk.c:2478) # [ 12.241148][ T158] vprintk_emit (kernel/printk/printk.c:2479) # [ 12.241151][ T158] ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126)) # [ 12.241154][ T158] ? _copy_from_iter (./include/linux/instrumented.h:146 lib/iov_iter.c:66 ./include/linux/iov_iter.h:30 ./include/linux/iov_iter.h:302 ./include/linux/iov_iter.h:330 lib/iov_iter.c:261 lib/iov_iter.c:272) # [ 12.241160][ T158] devkmsg_emit.constprop.0 (kernel/printk/printk.c:733) # [ 12.241164][ T158] ? vprintk_emit.cold (kernel/printk/printk.c:2449) # [ 12.241168][ T158] ? __kmalloc_noprof (mm/slub.c:5415 mm/slub.c:5439) # [ 12.241169][ T158] ? idr_get_free (??:?) # [ 12.241173][ T158] ? devkmsg_write (./include/linux/slab.h:995 kernel/printk/printk.c:762) # [ 12.241176][ T158] ? _copy_from_iter (./include/linux/instrumented.h:146 lib/iov_iter.c:66 ./include/linux/iov_iter.h:30 ./include/linux/iov_iter.h:302 ./include/linux/iov_iter.h:330 lib/iov_iter.c:261 lib/iov_iter.c:272) # [ 12.241179][ T158] devkmsg_write.cold (kernel/printk/printk.c:796) # [ 12.241181][ T158] ? vprintk_default (kernel/printk/printk.c:2494) # [ 12.241183][ T158] ? __lock_acquire (kernel/locking/lockdep.c:5254) # [ 12.241185][ T158] ? vfs_lock_file (./include/linux/fs.h:1348) # [ 12.241189][ T158] ? vprintk_default (kernel/printk/printk.c:2494) # [ 12.241191][ T158] new_sync_write (fs/read_write.c:595) # [ 12.241196][ T158] ? new_sync_read (./include/linux/ioprio.h:41) # [ 12.241197][ T158] ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380) # [ 12.241218][ T158] ? __ia32_sys_read (fs/read_write.c:723) # [ 12.241219][ T158] ? do_raw_spin_unlock (./include/linux/instrumented.h:82 ./include/linux/atomic/atomic-instrumented.h:32 ./include/asm-generic/qspinlock.h:58 kernel/locking/spinlock_debug.c:101 kernel/locking/spinlock_debug.c:141) # [ 12.241222][ T158] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) # [ 12.241225][ T158] do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84) # [ 12.241227][ T158] ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3)) # [ 12.241230][ T158] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121) # [ 12.241233][ T158] RIP: 0033:0x7fb96fc5e54e # [ 12.241237][ T158] Code: 4d 89 d8 e8 b4 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 c3 83 e2 39 83 fa 08 75 e7 e8 03 ff ff ff 0f 1f 00 f3 0f 1e fa All code ======== 0: 4d 89 d8 mov %r11,%r8 3: e8 b4 bd 00 00 call 0xbdbc 8: 4c 8b 5d f8 mov -0x8(%rbp),%r11 c: 41 8b 93 08 03 00 00 mov 0x308(%r11),%edx 13: 59 pop %rcx 14: 5e pop %rsi 15: 48 83 f8 fc cmp $0xfffffffffffffffc,%rax 19: 74 11 je 0x2c 1b: c9 leave 1c: c3 ret 1d: 0f 1f 80 00 00 00 00 nopl 0x0(%rax) 24: 48 8b 45 10 mov 0x10(%rbp),%rax 28: 0f 05 syscall 2a:* c9 leave <-- trapping instruction 2b: c3 ret 2c: 83 e2 39 and $0x39,%edx 2f: 83 fa 08 cmp $0x8,%edx 32: 75 e7 jne 0x1b 34: e8 03 ff ff ff call 0xffffffffffffff3c 39: 0f 1f 00 nopl (%rax) 3c: f3 0f 1e fa endbr64 Code starting with the faulting instruction =========================================== 0: c9 leave 1: c3 ret 2: 83 e2 39 and $0x39,%edx 5: 83 fa 08 cmp $0x8,%edx 8: 75 e7 jne 0xfffffffffffffff1 a: e8 03 ff ff ff call 0xffffffffffffff12 f: 0f 1f 00 nopl (%rax) 12: f3 0f 1e fa endbr64 # [ 12.241239][ T158] RSP: 002b:00007ffde95a5040 EFLAGS: 00000202 ORIG_RAX: 0000000000000001 # [ 12.241241][ T158] RAX: ffffffffffffffda RBX: 00007fb96fddf580 RCX: 00007fb96fc5e54e # [ 12.241243][ T158] RDX: 0000000000000023 RSI: 000055e6ad921ab0 RDI: 0000000000000001 # [ 12.241244][ T158] RBP: 00007ffde95a5050 R08: 0000000000000000 R09: 0000000000000000 # [ 12.241245][ T158] R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000023 # [ 12.241246][ T158] R13: 0000000000000023 R14: 000055e6ad921ab0 R15: 0000000000000000 | [ 9.184003][ T170] softirqs last disabled at (25151): __irq_exit_rcu (kernel/softirq.c:679 kernel/softirq.c:519 kernel/softirq.c:767) | [ 9.184006][ T170] Preemption disabled at: | [ 9.184007][ T170] vprintk_emit (kernel/printk/printk.c:2471) | [ 9.184015][ T170] Tainted: [W]=WARN [ 9.184016][ T170] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 9.184017][ T170] Call Trace: [ 9.184019][ T170] [ 9.184021][ T170] dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120) [ 9.184026][ T170] ? vprintk_emit (kernel/printk/printk.c:2471) [ 9.184028][ T170] __might_resched.cold (kernel/sched/core.c:9234) [ 9.184032][ T170] ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3)) [ 9.184036][ T170] ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439) [ 9.184040][ T170] __kmalloc_noprof (./include/linux/sched/mm.h:322 (discriminator 2) mm/slub.c:4636 (discriminator 2) mm/slub.c:4974 (discriminator 2) mm/slub.c:5413 (discriminator 2) mm/slub.c:5439 (discriminator 2)) [ 9.184042][ T170] ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429) [ 9.184048][ T170] ? do_raw_spin_unlock (./include/linux/instrumented.h:82 ./include/linux/atomic/atomic-instrumented.h:32 ./include/asm-generic/qspinlock.h:58 kernel/locking/spinlock_debug.c:101 kernel/locking/spinlock_debug.c:141) [ 9.184050][ T170] alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429) [ 9.184053][ T170] put_chars (drivers/char/virtio_console.c:1176) [ 9.184056][ T170] ? __send_to_port (drivers/char/virtio_console.c:654) [ 9.184058][ T170] ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2)) [ 9.184063][ T170] hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2)) [ 9.184069][ T170] ? hvc_write (drivers/tty/hvc/hvc_console.c:501) [ 9.184071][ T170] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 9.184075][ T170] ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22)) [ 9.184078][ T170] console_emit_next_record (kernel/printk/printk.c:3183) [ 9.184082][ T170] ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20) [ 9.184086][ T170] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 9.184088][ T170] ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22)) [ 9.184091][ T170] console_flush_one_record (kernel/printk/printk.c:3268) [ 9.184095][ T170] ? console_emit_next_record (kernel/printk/printk.c:3150) [ 9.184096][ T170] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 9.184101][ T170] console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420) [ 9.184103][ T170] ? console_flush_one_record (kernel/printk/printk.c:3316) [ 9.184105][ T170] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 9.184107][ T170] ? lock_acquire (kernel/locking/lockdep.c:5913) [ 9.184110][ T170] ? __down_trylock_console_sem (kernel/printk/printk.c:334) [ 9.184111][ T170] ? vprintk_emit (kernel/printk/printk.c:2478) [ 9.184114][ T170] vprintk_emit (kernel/printk/printk.c:2479) [ 9.184118][ T170] ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126)) [ 9.184119][ T170] ? find_held_lock (kernel/locking/lockdep.c:5367) [ 9.184123][ T170] ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554) [ 9.184124][ T170] ? fast_dput (./include/linux/rcupdate.h:319 (discriminator 2) ./include/linux/rcupdate.h:880 (discriminator 2) fs/dcache.c:948 (discriminator 2)) [ 9.184129][ T170] ? cleanup_netconsole (./include/linux/list.h:99 (discriminator 2) ./include/linux/list.h:169 (discriminator 2) ./include/linux/list.h:206 (discriminator 2) ./include/linux/configfs.h:112 (discriminator 2) drivers/net/netconsole.c:1718 (discriminator 2)) netconsole [ 9.184133][ T170] _printk (kernel/printk/printk.c:2504) [ 9.184136][ T170] ? snapshot_read.cold (user.c:?) [ 9.184139][ T170] ? __up_write (kernel/locking/rwsem.c:1422 (discriminator 1)) [ 9.184142][ T170] ? cleanup_netconsole (./include/linux/list.h:99 (discriminator 2) ./include/linux/list.h:169 (discriminator 2) ./include/linux/list.h:206 (discriminator 2) ./include/linux/configfs.h:112 (discriminator 2) drivers/net/netconsole.c:1718 (discriminator 2)) netconsole [ 9.184146][ T170] ? configfs_register_subsystem (./include/linux/instrumented.h:112 ./include/linux/atomic/atomic-instrumented.h:1383 fs/configfs/dir.c:173 fs/configfs/dir.c:171 fs/configfs/dir.c:1929) [ 9.184150][ T170] init_netconsole (drivers/net/netconsole.c:1286) netconsole [ 9.184153][ T170] ? cleanup_netconsole (./include/linux/list.h:99 (discriminator 2) ./include/linux/list.h:169 (discriminator 2) ./include/linux/list.h:206 (discriminator 2) ./include/linux/configfs.h:112 (discriminator 2) drivers/net/netconsole.c:1718 (discriminator 2)) netconsole [ 9.184160][ T170] ? cleanup_netconsole (./include/linux/list.h:99 (discriminator 2) ./include/linux/list.h:169 (discriminator 2) ./include/linux/list.h:206 (discriminator 2) ./include/linux/configfs.h:112 (discriminator 2) drivers/net/netconsole.c:1718 (discriminator 2)) netconsole [ 9.184162][ T170] do_one_initcall (init/main.c:1357) [ 9.184166][ T170] ? trace_event_raw_event_initcall_level (./include/trace/events/initcall.h:10) [ 9.184171][ T170] ? do_init_module (./include/linux/slab.h:991 (discriminator 1) kernel/module/main.c:3105 (discriminator 1)) [ 9.184174][ T170] ? kasan_unpoison (mm/kasan/shadow.c:146 mm/kasan/shadow.c:178) [ 9.184179][ T170] do_init_module (kernel/module/main.c:3117) [ 9.184182][ T170] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4488) [ 9.184186][ T170] ? free_module (./include/trace/events/module.h:50 (discriminator 19)) [ 9.184189][ T170] ? kfree (./include/linux/kasan.h:235 mm/slub.c:2748 mm/slub.c:6499 mm/slub.c:6792) [ 9.184192][ T170] load_module (kernel/module/main.c:3593) [ 9.184203][ T170] ? layout_and_allocate.isra.0 (kernel/module/main.c:3016) [ 9.184206][ T170] ? __ia32_sys_fsconfig (??:?) [ 9.184209][ T170] ? ovl_real_file (fs/overlayfs/file.c:195) [ 9.184212][ T170] ? find_held_lock (kernel/locking/lockdep.c:5367) [ 9.184214][ T170] ? backing_file_read_iter (fs/backing-file.c:211) [ 9.184218][ T170] ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3)) [ 9.184222][ T170] init_module_from_file (kernel/module/main.c:3790) [ 9.184225][ T170] ? __do_sys_init_module (kernel/module/main.c:3664) [ 9.184232][ T170] ? __rwlock_init (kernel/locking/spinlock_debug.c:48) [ 9.184235][ T170] ? do_raw_spin_unlock (./include/linux/instrumented.h:82 ./include/linux/atomic/atomic-instrumented.h:32 ./include/asm-generic/qspinlock.h:58 kernel/locking/spinlock_debug.c:101 kernel/locking/spinlock_debug.c:141) [ 9.184238][ T170] idempotent_init_module (kernel/module/main.c:3802) [ 9.184242][ T170] ? init_module_from_file (kernel/module/main.c:3791) [ 9.184248][ T170] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 9.184250][ T170] ? cap_capable (./include/trace/events/capability.h:26 (discriminator 22) security/commoncap.c:130 (discriminator 22)) [ 9.184255][ T170] __x64_sys_finit_module (kernel/module/main.c:3828 kernel/module/main.c:3812 kernel/module/main.c:3812) [ 9.184257][ T170] ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22)) [ 9.184261][ T170] do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84) [ 9.184263][ T170] ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3)) [ 9.184266][ T170] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121) [ 9.184268][ T170] RIP: 0033:0x7f042a8cb37d [ 9.184271][ T170] Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 4b aa 0f 00 f7 d8 64 89 01 48 All code ======== 0: ff c3 inc %ebx 2: 66 2e 0f 1f 84 00 00 cs nopw 0x0(%rax,%rax,1) 9: 00 00 00 c: 90 nop d: f3 0f 1e fa endbr64 11: 48 89 f8 mov %rdi,%rax 14: 48 89 f7 mov %rsi,%rdi 17: 48 89 d6 mov %rdx,%rsi 1a: 48 89 ca mov %rcx,%rdx 1d: 4d 89 c2 mov %r8,%r10 20: 4d 89 c8 mov %r9,%r8 23: 4c 8b 4c 24 08 mov 0x8(%rsp),%r9 28: 0f 05 syscall 2a:* 48 3d 01 f0 ff ff cmp $0xfffffffffffff001,%rax <-- trapping instruction 30: 73 01 jae 0x33 32: c3 ret 33: 48 8b 0d 4b aa 0f 00 mov 0xfaa4b(%rip),%rcx # 0xfaa85 3a: f7 d8 neg %eax 3c: 64 89 01 mov %eax,%fs:(%rcx) 3f: 48 rex.W Code starting with the faulting instruction =========================================== 0: 48 3d 01 f0 ff ff cmp $0xfffffffffffff001,%rax 6: 73 01 jae 0x9 8: c3 ret 9: 48 8b 0d 4b aa 0f 00 mov 0xfaa4b(%rip),%rcx # 0xfaa5b 10: f7 d8 neg %eax 12: 64 89 01 mov %eax,%fs:(%rcx) 15: 48 rex.W [ 9.184273][ T170] RSP: 002b:00007fff3f87a8d8 EFLAGS: 00000246 ORIG_RAX: 0000000000000139 [ 9.184275][ T170] RAX: ffffffffffffffda RBX: 0000562b751cf700 RCX: 00007f042a8cb37d [ 9.184277][ T170] RDX: 0000000000000000 RSI: 0000562b69477ffd RDI: 0000000000000005 [ 9.184278][ T170] RBP: 00007fff3f87a970 R08: 0000000000000000 R09: 0000000000000000 [ 9.184278][ T170] R10: 0000000000000000 R11: 0000000000000246 R12: 0000562b69477ffd [ 9.184279][ T170] R13: 0000562b751cf810 R14: 0000000000040000 R15: 0000000000000000 | [ 12.241029][ T158] softirqs last disabled at (130910): restore_fpregs_from_user (./include/linux/bottom_half.h:20 (discriminator 2) ./arch/x86/include/asm/fpu/api.h:69 (discriminator 2) arch/x86/kernel/fpu/signal.c:277 (discriminator 2)) | [ 12.241031][ T158] Preemption disabled at: | [ 12.241032][ T158] vprintk_emit (kernel/printk/printk.c:2471) | [ 12.241041][ T158] Tainted: [W]=WARN [ 12.241042][ T158] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 12.241044][ T158] Call Trace: [ 12.241045][ T158] [ 12.241047][ T158] dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120) [ 12.241052][ T158] ? vprintk_emit (kernel/printk/printk.c:2471) [ 12.241054][ T158] __might_resched.cold (kernel/sched/core.c:9234) [ 12.241058][ T158] ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3)) [ 12.241061][ T158] ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439) [ 12.241066][ T158] __kmalloc_noprof (./include/linux/sched/mm.h:322 (discriminator 2) mm/slub.c:4636 (discriminator 2) mm/slub.c:4974 (discriminator 2) mm/slub.c:5413 (discriminator 2) mm/slub.c:5439 (discriminator 2)) [ 12.241068][ T158] ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429) [ 12.241074][ T158] ? do_raw_spin_unlock (./include/linux/instrumented.h:82 ./include/linux/atomic/atomic-instrumented.h:32 ./include/asm-generic/qspinlock.h:58 kernel/locking/spinlock_debug.c:101 kernel/locking/spinlock_debug.c:141) [ 12.241076][ T158] alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429) [ 12.241079][ T158] put_chars (drivers/char/virtio_console.c:1176) [ 12.241082][ T158] ? __send_to_port (drivers/char/virtio_console.c:654) [ 12.241083][ T158] ? printk_get_next_message (kernel/printk/printk.c:3072) [ 12.241086][ T158] ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380) [ 12.241089][ T158] ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2)) [ 12.241093][ T158] hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2)) [ 12.241096][ T158] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 12.241097][ T158] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 12.241101][ T158] ? hvc_write (drivers/tty/hvc/hvc_console.c:501) [ 12.241104][ T158] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 12.241107][ T158] ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22)) [ 12.241111][ T158] console_emit_next_record (kernel/printk/printk.c:3183) [ 12.241114][ T158] ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20) [ 12.241118][ T158] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 12.241121][ T158] ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22)) [ 12.241124][ T158] console_flush_one_record (kernel/printk/printk.c:3268) [ 12.241128][ T158] ? console_emit_next_record (kernel/printk/printk.c:3150) [ 12.241129][ T158] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 12.241134][ T158] console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420) [ 12.241137][ T158] ? console_flush_one_record (kernel/printk/printk.c:3316) [ 12.241138][ T158] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 12.241140][ T158] ? lock_acquire (kernel/locking/lockdep.c:5913) [ 12.241143][ T158] ? __down_trylock_console_sem (kernel/printk/printk.c:334) [ 12.241145][ T158] ? vprintk_emit (kernel/printk/printk.c:2478) [ 12.241148][ T158] vprintk_emit (kernel/printk/printk.c:2479) [ 12.241151][ T158] ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126)) [ 12.241154][ T158] ? _copy_from_iter (./include/linux/instrumented.h:146 lib/iov_iter.c:66 ./include/linux/iov_iter.h:30 ./include/linux/iov_iter.h:302 ./include/linux/iov_iter.h:330 lib/iov_iter.c:261 lib/iov_iter.c:272) [ 12.241160][ T158] devkmsg_emit.constprop.0 (kernel/printk/printk.c:733) [ 12.241164][ T158] ? vprintk_emit.cold (kernel/printk/printk.c:2449) [ 12.241168][ T158] ? __kmalloc_noprof (mm/slub.c:5415 mm/slub.c:5439) [ 12.241169][ T158] ? idr_get_free (??:?) [ 12.241173][ T158] ? devkmsg_write (./include/linux/slab.h:995 kernel/printk/printk.c:762) [ 12.241176][ T158] ? _copy_from_iter (./include/linux/instrumented.h:146 lib/iov_iter.c:66 ./include/linux/iov_iter.h:30 ./include/linux/iov_iter.h:302 ./include/linux/iov_iter.h:330 lib/iov_iter.c:261 lib/iov_iter.c:272) [ 12.241179][ T158] devkmsg_write.cold (kernel/printk/printk.c:796) [ 12.241181][ T158] ? vprintk_default (kernel/printk/printk.c:2494) [ 12.241183][ T158] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 12.241185][ T158] ? vfs_lock_file (./include/linux/fs.h:1348) [ 12.241189][ T158] ? vprintk_default (kernel/printk/printk.c:2494) [ 12.241191][ T158] new_sync_write (fs/read_write.c:595) [ 12.241196][ T158] ? new_sync_read (./include/linux/ioprio.h:41) [ 12.241197][ T158] ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380) [ 12.241211][ T158] vfs_write (fs/read_write.c:687) [ 12.241215][ T158] ksys_write (fs/read_write.c:739) [ 12.241218][ T158] ? __ia32_sys_read (fs/read_write.c:723) [ 12.241219][ T158] ? do_raw_spin_unlock (./include/linux/instrumented.h:82 ./include/linux/atomic/atomic-instrumented.h:32 ./include/asm-generic/qspinlock.h:58 kernel/locking/spinlock_debug.c:101 kernel/locking/spinlock_debug.c:141) [ 12.241222][ T158] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 12.241225][ T158] do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84) [ 12.241227][ T158] ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3)) [ 12.241230][ T158] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121) [ 12.241233][ T158] RIP: 0033:0x7fb96fc5e54e [ 12.241237][ T158] Code: 4d 89 d8 e8 b4 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 c3 83 e2 39 83 fa 08 75 e7 e8 03 ff ff ff 0f 1f 00 f3 0f 1e fa All code ======== 0: 4d 89 d8 mov %r11,%r8 3: e8 b4 bd 00 00 call 0xbdbc 8: 4c 8b 5d f8 mov -0x8(%rbp),%r11 c: 41 8b 93 08 03 00 00 mov 0x308(%r11),%edx 13: 59 pop %rcx 14: 5e pop %rsi 15: 48 83 f8 fc cmp $0xfffffffffffffffc,%rax 19: 74 11 je 0x2c 1b: c9 leave 1c: c3 ret 1d: 0f 1f 80 00 00 00 00 nopl 0x0(%rax) 24: 48 8b 45 10 mov 0x10(%rbp),%rax 28: 0f 05 syscall 2a:* c9 leave <-- trapping instruction 2b: c3 ret 2c: 83 e2 39 and $0x39,%edx 2f: 83 fa 08 cmp $0x8,%edx 32: 75 e7 jne 0x1b 34: e8 03 ff ff ff call 0xffffffffffffff3c 39: 0f 1f 00 nopl (%rax) 3c: f3 0f 1e fa endbr64 Code starting with the faulting instruction =========================================== 0: c9 leave 1: c3 ret 2: 83 e2 39 and $0x39,%edx 5: 83 fa 08 cmp $0x8,%edx 8: 75 e7 jne 0xfffffffffffffff1 a: e8 03 ff ff ff call 0xffffffffffffff12 f: 0f 1f 00 nopl (%rax) 12: f3 0f 1e fa endbr64 [ 12.241239][ T158] RSP: 002b:00007ffde95a5040 EFLAGS: 00000202 ORIG_RAX: 0000000000000001 [ 12.241241][ T158] RAX: ffffffffffffffda RBX: 00007fb96fddf580 RCX: 00007fb96fc5e54e [ 12.241243][ T158] RDX: 0000000000000023 RSI: 000055e6ad921ab0 RDI: 0000000000000001 [ 12.241244][ T158] RBP: 00007ffde95a5050 R08: 0000000000000000 R09: 0000000000000000 [ 12.241245][ T158] R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000023 Finger prints: __irq_exit_rcu:vprintk_emit:dump_stack_lvl:__kmalloc_noprof:put_chars restore_fpregs_from_user:vprintk_emit:dump_stack_lvl:__kmalloc_noprof:put_chars