[ 15.201860][ T83] (udev-worker) (83) used greatest stack depth: 22696 bytes left [ 15.201884][ T83] BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:322 [ 15.201887][ T83] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 83, name: (udev-worker) [ 15.201890][ T83] preempt_count: 2, expected: 0 [ 15.201891][ T83] RCU nest depth: 0, expected: 0 [ 15.201893][ T83] locks held by (udev-worker)/83: 5, last CPU#2: [ 15.201896][ T83] #0: ffffffffac0027b8 (low_water_lock){+.+.}-{3:3}, at: do_exit+0x887/0xdc0 [ 15.201911][ T83] #1: ffffffffac169cc0 (console_lock){+.+.}-{0:0}, at: vprintk_emit+0x320/0x3e0 [ 15.201919][ T83] #2: ffffffffac169d38 (console_srcu){....}-{0:0}, at: console_flush_one_record+0x106/0x710 [ 15.201925][ T83] #3: ffffffffac089660 (console_owner){....}-{0:0}, at: console_lock_spinning_enable+0x40/0x60 [ 15.201930][ T83] #4: ffffffffac089560 (printk_legacy_map-wait-type-override){....}-{3:3}, at: console_emit_next_record+0x1df/0x4c0 [ 15.201936][ T83] irq event stamp: 517366 [ 15.201937][ T83] hardirqs last enabled at (517365): [] __down_trylock_console_sem+0x86/0xa0 [ 15.201941][ T83] hardirqs last disabled at (517366): [] console_emit_next_record+0x3d4/0x4c0 [ 15.201943][ T83] softirqs last enabled at (517302): [] netlink_release+0x17b/0xcf0 [ 15.201948][ T83] softirqs last disabled at (517300): [] netlink_release+0xd2/0xcf0 [ 15.201951][ T83] Preemption disabled at: [ 15.201952][ T83] [<0000000000000000>] 0x0 [ 15.201961][ T83] CPU: 2 UID: 0 PID: 83 Comm: (udev-worker) Tainted: G W 7.2.0-virtme #1 PREEMPT(full) [ 15.201967][ T83] Tainted: [W]=WARN [ 15.201968][ T83] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 15.201970][ T83] Call Trace: [ 15.201972][ T83] [ 15.201975][ T83] dump_stack_lvl+0x6f/0xa0 [ 15.201983][ T83] __might_resched.cold+0x1fe/0x2c1 [ 15.201989][ T83] ? perf_trace_sched_switch+0x7c0/0x7c0 [ 15.201994][ T83] ? __kmalloc_noprof+0xdb/0x760 [ 15.202001][ T83] __kmalloc_noprof+0x443/0x760 [ 15.202005][ T83] ? alloc_buf.isra.0+0x4b/0x260 [ 15.202014][ T83] ? do_raw_spin_unlock+0x59/0x250 [ 15.202017][ T83] alloc_buf.isra.0+0x4b/0x260 [ 15.202023][ T83] put_chars+0x1e1/0x2f0 [ 15.202028][ T83] ? __send_to_port+0x420/0x420 [ 15.202030][ T83] ? rcu_lockdep_current_cpu_online+0x3f/0x1b0 [ 15.202037][ T83] ? validate_chain+0x38b/0xc20 [ 15.202045][ T83] hvc_console_print+0x292/0x780 [ 15.202057][ T83] ? hvc_write+0x3a0/0x3a0 [ 15.202061][ T83] ? rcu_is_watching+0x16/0xd0 [ 15.202064][ T83] ? lock_acquire+0x13c/0x160 [ 15.202071][ T83] console_emit_next_record+0x22f/0x4c0 [ 15.202077][ T83] ? devkmsg_read+0x4b0/0x4b0 [ 15.202079][ T83] ? console_flush_one_record+0x106/0x710 [ 15.202084][ T83] ? rcu_is_watching+0x16/0xd0 [ 15.202088][ T83] ? lock_acquire+0x13c/0x160 [ 15.202094][ T83] console_flush_one_record+0x46f/0x710 [ 15.202101][ T83] ? console_emit_next_record+0x4c0/0x4c0 [ 15.202104][ T83] ? __lock_acquire+0x518/0xc20 [ 15.202113][ T83] console_unlock+0xee/0x1f0 [ 15.202117][ T83] ? console_flush_one_record+0x710/0x710 [ 15.202119][ T83] ? rcu_is_watching+0x16/0xd0 [ 15.202123][ T83] ? lock_acquire+0x60/0x160 [ 15.202128][ T83] ? __down_trylock_console_sem+0x5e/0xa0 [ 15.202131][ T83] ? vprintk_emit+0x320/0x3e0 [ 15.202135][ T83] vprintk_emit+0x37c/0x3e0 [ 15.202141][ T83] ? wake_up_klogd_work_func+0x90/0x90 [ 15.202146][ T83] ? __lock_acquire+0x518/0xc20 [ 15.202152][ T83] _printk+0xc7/0x100 [ 15.202157][ T83] ? snapshot_read.cold+0x21/0x21 [ 15.202162][ T83] ? do_raw_spin_lock+0x131/0x280 [ 15.202166][ T83] ? __rwlock_init+0x150/0x150 [ 15.202172][ T83] ? do_raw_spin_lock+0x131/0x280 [ 15.202177][ T83] do_exit.cold+0x82/0x9c [ 15.202183][ T83] ? exit_notify+0x890/0x890 [ 15.202186][ T83] ? __lock_release.isra.0+0x69/0x1a0 [ 15.202190][ T83] ? rcu_is_watching+0x16/0xd0 [ 15.202197][ T83] do_group_exit+0xb8/0x370 [ 15.202202][ T83] __x64_sys_exit_group+0x3c/0x50 [ 15.202206][ T83] x64_sys_call+0x1567/0x1570 [ 15.202209][ T83] do_syscall_64+0xff/0x530 [ 15.202214][ T83] ? exc_page_fault+0xee/0x100 [ 15.202219][ T83] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 15.202223][ T83] RIP: 0033:0x7f3c8efeb1b8 [ 15.202227][ T83] Code: Unable to access opcode bytes at 0x7f3c8efeb18e. [ 15.202228][ T83] RSP: 002b:00007fff3d455fb8 EFLAGS: 00000256 ORIG_RAX: 00000000000000e7 [ 15.202232][ T83] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f3c8efeb1b8 [ 15.202234][ T83] RDX: 0000000000000000 RSI: fffffffffffffe90 RDI: 0000000000000000 [ 15.202236][ T83] RBP: 00007fff3d456140 R08: 000055e8b5192fb8 R09: 0000000000000000 [ 15.202237][ T83] R10: 0000000000000000 R11: 0000000000000256 R12: 0000000000000000 [ 15.202239][ T83] R13: 00007f3c8e849050 R14: 00007f3c8f51cd9e R15: 000055e8b519e2f0 [ 15.202252][ T83]