====================================== | [ 27.465064][ T471] softirqs last disabled at (46107): __irq_exit_rcu (kernel/softirq.c:679 kernel/softirq.c:519 kernel/softirq.c:767) | [ 27.465067][ T471] Preemption disabled at: | [ 27.465068][ T471] 0x0 | [ 27.465081][ T471] Tainted: [W]=WARN [ 27.465082][ T471] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 27.465084][ T471] Call Trace: [ 27.465086][ T471] [ 27.465088][ T471] dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120) [ 27.465096][ T471] __might_resched.cold (kernel/sched/core.c:9234) [ 27.465101][ T471] ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3)) [ 27.465106][ T471] ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439) [ 27.465113][ T471] __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)) [ 27.465117][ T471] ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429) [ 27.465126][ T471] ? 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) [ 27.465130][ T471] alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429) [ 27.465135][ T471] put_chars (drivers/char/virtio_console.c:1176) [ 27.465139][ T471] ? __send_to_port (drivers/char/virtio_console.c:654) [ 27.465151][ T471] hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2)) [ 27.465163][ T471] ? hvc_write (drivers/tty/hvc/hvc_console.c:501) [ 27.465167][ T471] ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22)) [ 27.465174][ T471] console_emit_next_record (kernel/printk/printk.c:3183) [ 27.465180][ T471] ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20) [ 27.465181][ T471] ? 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)) [ 27.465186][ T471] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 27.465190][ T471] ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22)) [ 27.465196][ T471] console_flush_one_record (kernel/printk/printk.c:3268) [ 27.465202][ T471] ? console_emit_next_record (kernel/printk/printk.c:3150) [ 27.465204][ T471] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 27.465212][ T471] console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420) [ 27.465216][ T471] ? console_flush_one_record (kernel/printk/printk.c:3316) [ 27.465217][ T471] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 27.465220][ T471] ? lock_acquire (kernel/locking/lockdep.c:5913) [ 27.465226][ T471] ? __down_trylock_console_sem (kernel/printk/printk.c:334) [ 27.465229][ T471] ? vprintk_emit (kernel/printk/printk.c:2478) [ 27.465233][ T471] vprintk_emit (kernel/printk/printk.c:2479) [ 27.465238][ T471] ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126)) [ 27.465243][ T471] ? __lock_acquire (kernel/locking/lockdep.c:5254) [ 27.465250][ T471] _printk (kernel/printk/printk.c:2504) [ 27.465255][ T471] ? snapshot_read.cold (user.c:?) [ 27.465259][ T471] ? 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) [ 27.465263][ T471] ? __rwlock_init (kernel/locking/spinlock_debug.c:48) [ 27.465269][ T471] ? 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) [ 27.465273][ T471] do_exit.cold (kernel/exit.c:889 (discriminator 4) kernel/exit.c:1043 (discriminator 4)) [ 27.465278][ T471] ? exit_notify (kernel/exit.c:780) [ 27.465280][ T471] ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554) [ 27.465284][ T471] ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3)) [ 27.465290][ T471] do_group_exit (kernel/exit.c:1151) [ 27.465295][ T471] __x64_sys_exit_group (kernel/exit.c:1162 kernel/exit.c:1160 kernel/exit.c:1160) [ 27.465298][ T471] x64_sys_call (./arch/x86/include/generated/asm/syscalls_64.h:232) [ 27.465301][ T471] do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84) [ 27.465305][ T471] ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3)) [ 27.465310][ T471] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121) [ 27.465313][ T471] RIP: 0033:0x7f8c076ff1b8 [ 27.465316][ T471] Code: Unable to access opcode bytes at 0x7f8c076ff18e. Code starting with the faulting instruction =========================================== [ 27.465317][ T471] RSP: 002b:00007ffc36d39bf8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 27.465320][ T471] RAX: ffffffffffffffda RBX: 00007f8c0782ff88 RCX: 00007f8c076ff1b8 [ 27.465322][ T471] RDX: 00007f8c07636748 RSI: ffffffffffffffb0 RDI: 0000000000000000 [ 27.465323][ T471] RBP: 00007ffc36d39c50 R08: 0000000000000000 R09: 0000000000000020 [ 27.465324][ T471] R10: 00007ffc36d39a70 R11: 0000000000000246 R12: 0000000000000001 Finger prints: __irq_exit_rcu:dump_stack_lvl:__kmalloc_noprof:put_chars:hvc_console_print