====================================== | [ 13.374986][ T85] softirqs last disabled at (316875): __irq_exit_rcu (kernel/softirq.c:679 kernel/softirq.c:519 kernel/softirq.c:767) | [ 13.374988][ T85] Preemption disabled at: | [ 13.374989][ T85] 0x0 | [ 13.374999][ T85] Tainted: [W]=WARN [ 13.375000][ T85] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 13.375002][ T85] Call Trace: [ 13.375003][ T85] [ 13.375005][ T85] dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120) [ 13.375011][ T85] __might_resched.cold (kernel/sched/core.c:9234) [ 13.375016][ T85] ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3)) [ 13.375021][ T85] ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439) [ 13.375026][ T85] __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)) [ 13.375028][ T85] ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429) [ 13.375035][ T85] ? 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) [ 13.375038][ T85] alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429) [ 13.375042][ T85] put_chars (drivers/char/virtio_console.c:1176) [ 13.375046][ T85] ? __send_to_port (drivers/char/virtio_console.c:654) [ 13.375047][ T85] ? printk_get_next_message (kernel/printk/printk.c:3072) [ 13.375051][ T85] ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380) [ 13.375055][ T85] ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2)) [ 13.375059][ T85] hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2)) [ 13.375063][ T85] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 13.375064][ T85] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 13.375069][ T85] ? hvc_write (drivers/tty/hvc/hvc_console.c:501) [ 13.375073][ T85] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 13.375076][ T85] ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22)) [ 13.375081][ T85] console_emit_next_record (kernel/printk/printk.c:3183) [ 13.375085][ T85] ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20) [ 13.375089][ T85] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 13.375092][ T85] ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22)) [ 13.375096][ T85] console_flush_one_record (kernel/printk/printk.c:3268) [ 13.375100][ T85] ? console_emit_next_record (kernel/printk/printk.c:3150) [ 13.375102][ T85] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 13.375108][ T85] console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420) [ 13.375110][ T85] ? console_flush_one_record (kernel/printk/printk.c:3316) [ 13.375112][ T85] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 13.375115][ T85] ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 18) ./include/trace/events/lock.h:23 (discriminator 18) kernel/locking/lockdep.c:5871 (discriminator 18)) [ 13.375119][ T85] ? __down_trylock_console_sem (kernel/printk/printk.c:334) [ 13.375120][ T85] ? vprintk_emit (kernel/printk/printk.c:2478) [ 13.375124][ T85] vprintk_emit (kernel/printk/printk.c:2479) [ 13.375128][ T85] ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126)) [ 13.375132][ T85] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 13.375136][ T85] _printk (kernel/printk/printk.c:2504) [ 13.375140][ T85] ? snapshot_read.cold (user.c:?) [ 13.375143][ T85] ? do_raw_spin_lock (./include/linux/instrumented.h:55 ./include/linux/atomic/atomic-instrumented.h:1301 ./include/asm-generic/qspinlock.h:112 kernel/locking/spinlock_debug.c:116) [ 13.375145][ T85] ? __rwlock_init (kernel/locking/spinlock_debug.c:48) [ 13.375149][ T85] ? do_raw_spin_lock (./include/linux/instrumented.h:55 ./include/linux/atomic/atomic-instrumented.h:1301 ./include/asm-generic/qspinlock.h:112 kernel/locking/spinlock_debug.c:116) [ 13.375152][ T85] do_exit.cold (kernel/exit.c:889 (discriminator 4) kernel/exit.c:1043 (discriminator 4)) [ 13.375156][ T85] ? exit_notify (kernel/exit.c:780) [ 13.375157][ T85] ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554) [ 13.375160][ T85] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 13.375165][ T85] do_group_exit (kernel/exit.c:1151) [ 13.375168][ T85] __x64_sys_exit_group (kernel/exit.c:1162 kernel/exit.c:1160 kernel/exit.c:1160) [ 13.375169][ T85] x64_sys_call (./arch/x86/include/generated/asm/syscalls_64.h:232) [ 13.375172][ T85] do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84) [ 13.375175][ T85] ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3)) [ 13.375179][ T85] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121) [ 13.375181][ T85] RIP: 0033:0x7f6c9c27e1b8 [ 13.375184][ T85] Code: Unable to access opcode bytes at 0x7f6c9c27e18e. Code starting with the faulting instruction =========================================== [ 13.375185][ T85] RSP: 002b:00007ffc52264638 EFLAGS: 00000256 ORIG_RAX: 00000000000000e7 [ 13.375187][ T85] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f6c9c27e1b8 [ 13.375189][ T85] RDX: 0000000000000000 RSI: fffffffffffffe90 RDI: 0000000000000000 [ 13.375190][ T85] RBP: 00007ffc522647c0 R08: 0000565194b4c488 R09: 0000000000000000 [ 13.375191][ T85] R10: 0000000000000000 R11: 0000000000000256 R12: 0000000000000000 Finger prints: __irq_exit_rcu:dump_stack_lvl:__kmalloc_noprof:put_chars:hvc_console_print