====================================== | [ 20.759417][ T699] softirqs last disabled at (30913): __irq_exit_rcu (kernel/softirq.c:679 kernel/softirq.c:519 kernel/softirq.c:767) | [ 20.759419][ T699] Preemption disabled at: | [ 20.759420][ T699] 0x0 | [ 20.759430][ T699] Tainted: [W]=WARN [ 20.759431][ T699] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 20.759432][ T699] Call Trace: [ 20.759434][ T699] [ 20.759436][ T699] dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120) [ 20.759442][ T699] __might_resched.cold (kernel/sched/core.c:9234) [ 20.759447][ T699] ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3)) [ 20.759451][ T699] ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439) [ 20.759455][ T699] __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)) [ 20.759457][ T699] ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429) [ 20.759464][ T699] ? 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) [ 20.759467][ T699] alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429) [ 20.759473][ T699] put_chars (drivers/char/virtio_console.c:1176) [ 20.759476][ T699] ? __send_to_port (drivers/char/virtio_console.c:654) [ 20.759477][ T699] ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3)) [ 20.759481][ T699] ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2)) [ 20.759486][ T699] hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2)) [ 20.759494][ T699] ? hvc_write (drivers/tty/hvc/hvc_console.c:501) [ 20.759496][ T699] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 20.759498][ T699] ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22)) [ 20.759502][ T699] console_emit_next_record (kernel/printk/printk.c:3183) [ 20.759506][ T699] ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20) [ 20.759508][ T699] ? console_flush_one_record (./include/linux/rcupdate.h:314 (discriminator 2) ./include/linux/srcu.h:439 (discriminator 2) kernel/printk/printk.c:291 (discriminator 2) kernel/printk/printk.c:3246 (discriminator 2)) [ 20.759512][ T699] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 20.759513][ T699] ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22)) [ 20.759517][ T699] console_flush_one_record (kernel/printk/printk.c:3268) [ 20.759522][ T699] ? console_emit_next_record (kernel/printk/printk.c:3150) [ 20.759524][ T699] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 20.759529][ T699] console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420) [ 20.759532][ T699] ? console_flush_one_record (kernel/printk/printk.c:3316) [ 20.759534][ T699] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 20.759535][ T699] ? lock_acquire (./include/linux/srcutree.h:374 ./include/linux/srcu.h:541 ./include/linux/srcu.h:645 ./include/trace/events/lock.h:23 ./include/trace/events/lock.h:23 kernel/locking/lockdep.c:5871) [ 20.759539][ T699] ? __down_trylock_console_sem (kernel/printk/printk.c:334) [ 20.759541][ T699] ? vprintk_emit (kernel/printk/printk.c:2478) [ 20.759544][ T699] vprintk_emit (kernel/printk/printk.c:2479) [ 20.759547][ T699] ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126)) [ 20.759549][ T699] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 20.759553][ T699] _printk (kernel/printk/printk.c:2504) [ 20.759557][ T699] ? snapshot_read.cold (user.c:?) [ 20.759560][ T699] ? 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) [ 20.759562][ T699] ? __rwlock_init (kernel/locking/spinlock_debug.c:48) [ 20.759566][ T699] ? 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) [ 20.759569][ T699] do_exit.cold (kernel/exit.c:889 (discriminator 4) kernel/exit.c:1043 (discriminator 4)) [ 20.759573][ T699] ? exit_notify (kernel/exit.c:780) [ 20.759574][ T699] ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554) [ 20.759577][ T699] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 20.759580][ T699] do_group_exit (kernel/exit.c:1151) [ 20.759583][ T699] __x64_sys_exit_group (kernel/exit.c:1162 kernel/exit.c:1160 kernel/exit.c:1160) [ 20.759585][ T699] x64_sys_call (./arch/x86/include/generated/asm/syscalls_64.h:232) [ 20.759588][ T699] do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84) [ 20.759592][ T699] ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3)) [ 20.759595][ T699] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121) [ 20.759597][ T699] RIP: 0033:0x7f1bc0efe1b8 [ 20.759599][ T699] Code: Unable to access opcode bytes at 0x7f1bc0efe18e. Code starting with the faulting instruction =========================================== [ 20.759600][ T699] RSP: 002b:00007ffdf49d8008 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 20.759603][ T699] RAX: ffffffffffffffda RBX: 00007f1bc102ef88 RCX: 00007f1bc0efe1b8 [ 20.759604][ T699] RDX: 00007f1bc0c48fc8 RSI: fffffffffffffeb8 RDI: 0000000000000000 [ 20.759605][ T699] RBP: 00007ffdf49d8060 R08: 0000000000000000 R09: 0000000000000050 [ 20.759606][ T699] R10: 00007ffdf49d7e20 R11: 0000000000000246 R12: 0000000000000001 Finger prints: __irq_exit_rcu:dump_stack_lvl:__kmalloc_noprof:put_chars:hvc_console_print