[ 42.358993][ T862] (udev-worker) (862) used greatest stack depth: 22696 bytes left [ 42.359013][ T862] BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:322 [ 42.359015][ T862] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 862, name: (udev-worker) [ 42.359016][ T862] preempt_count: 2, expected: 0 [ 42.359017][ T862] RCU nest depth: 0, expected: 0 [ 42.359018][ T862] locks held by (udev-worker)/862: 5, last CPU#1: [ 42.359020][ T862] #0: ffffffff9f6167b8 (low_water_lock){+.+.}-{3:3}, at: do_exit+0x887/0xdc0 [ 42.359032][ T862] #1: ffffffff9f77ddc0 (console_lock){+.+.}-{0:0}, at: vprintk_emit+0x320/0x3e0 [ 42.359036][ T862] #2: ffffffff9f77de38 (console_srcu){....}-{0:0}, at: console_flush_one_record+0x106/0x710 [ 42.359041][ T862] #3: ffffffff9f69d760 (console_owner){....}-{0:0}, at: console_lock_spinning_enable+0x40/0x60 [ 42.359044][ T862] #4: ffffffff9f69d660 (printk_legacy_map-wait-type-override){....}-{3:3}, at: console_emit_next_record+0x1df/0x4c0 [ 42.359048][ T862] irq event stamp: 584298 [ 42.359049][ T862] hardirqs last enabled at (584297): [] __down_trylock_console_sem+0x86/0xa0 [ 42.359052][ T862] hardirqs last disabled at (584298): [] console_emit_next_record+0x3d4/0x4c0 [ 42.359054][ T862] softirqs last enabled at (584262): [] handle_softirqs+0x67c/0x900 [ 42.359056][ T862] softirqs last disabled at (584251): [] __irq_exit_rcu+0x145/0x1c0 [ 42.359059][ T862] Preemption disabled at: [ 42.359059][ T862] [<0000000000000000>] 0x0 [ 42.359067][ T862] CPU: 1 UID: 0 PID: 862 Comm: (udev-worker) Tainted: G W 7.2.0-virtme #1 PREEMPT(full) [ 42.359070][ T862] Tainted: [W]=WARN [ 42.359071][ T862] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 42.359072][ T862] Call Trace: [ 42.359074][ T862] [ 42.359076][ T862] dump_stack_lvl+0x6f/0xa0 [ 42.359082][ T862] __might_resched.cold+0x1fe/0x2c1 [ 42.359086][ T862] ? perf_trace_sched_switch+0x7c0/0x7c0 [ 42.359090][ T862] ? __kmalloc_noprof+0xdb/0x760 [ 42.359094][ T862] __kmalloc_noprof+0x443/0x760 [ 42.359096][ T862] ? alloc_buf.isra.0+0x4b/0x260 [ 42.359103][ T862] ? do_raw_spin_unlock+0x59/0x250 [ 42.359105][ T862] alloc_buf.isra.0+0x4b/0x260 [ 42.359109][ T862] put_chars+0x1e1/0x2f0 [ 42.359111][ T862] ? __send_to_port+0x420/0x420 [ 42.359113][ T862] ? rcu_lockdep_current_cpu_online+0x3f/0x1b0 [ 42.359116][ T862] ? validate_chain+0x38b/0xc20 [ 42.359121][ T862] hvc_console_print+0x292/0x780 [ 42.359129][ T862] ? hvc_write+0x3a0/0x3a0 [ 42.359132][ T862] ? rcu_is_watching+0x16/0xd0 [ 42.359133][ T862] ? lock_acquire+0x13c/0x160 [ 42.359137][ T862] console_emit_next_record+0x22f/0x4c0 [ 42.359141][ T862] ? devkmsg_read+0x4b0/0x4b0 [ 42.359143][ T862] ? console_flush_one_record+0x106/0x710 [ 42.359146][ T862] ? rcu_is_watching+0x16/0xd0 [ 42.359148][ T862] ? lock_acquire+0x13c/0x160 [ 42.359152][ T862] console_flush_one_record+0x46f/0x710 [ 42.359156][ T862] ? console_emit_next_record+0x4c0/0x4c0 [ 42.359158][ T862] ? __lock_acquire+0x518/0xc20 [ 42.359163][ T862] console_unlock+0xee/0x1f0 [ 42.359166][ T862] ? console_flush_one_record+0x710/0x710 [ 42.359168][ T862] ? rcu_is_watching+0x16/0xd0 [ 42.359169][ T862] ? lock_acquire+0xe0/0x160 [ 42.359173][ T862] ? __down_trylock_console_sem+0x5e/0xa0 [ 42.359175][ T862] ? vprintk_emit+0x320/0x3e0 [ 42.359178][ T862] vprintk_emit+0x37c/0x3e0 [ 42.359181][ T862] ? wake_up_klogd_work_func+0x90/0x90 [ 42.359183][ T862] ? __lock_acquire+0x518/0xc20 [ 42.359187][ T862] _printk+0xc7/0x100 [ 42.359191][ T862] ? snapshot_read.cold+0x21/0x21 [ 42.359193][ T862] ? do_raw_spin_lock+0x131/0x280 [ 42.359196][ T862] ? __rwlock_init+0x150/0x150 [ 42.359200][ T862] ? do_raw_spin_lock+0x131/0x280 [ 42.359202][ T862] do_exit.cold+0x82/0x9c [ 42.359206][ T862] ? exit_notify+0x890/0x890 [ 42.359207][ T862] ? __lock_release.isra.0+0x69/0x1a0 [ 42.359210][ T862] ? rcu_is_watching+0x16/0xd0 [ 42.359213][ T862] do_group_exit+0xb8/0x370 [ 42.359216][ T862] __x64_sys_exit_group+0x3c/0x50 [ 42.359218][ T862] x64_sys_call+0x1567/0x1570 [ 42.359221][ T862] do_syscall_64+0xff/0x530 [ 42.359225][ T862] ? exc_page_fault+0xee/0x100 [ 42.359228][ T862] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 42.359230][ T862] RIP: 0033:0x7f5b8bb131b8 [ 42.359232][ T862] Code: Unable to access opcode bytes at 0x7f5b8bb1318e. [ 42.359233][ T862] RSP: 002b:00007ffcc7dac108 EFLAGS: 00000256 ORIG_RAX: 00000000000000e7 [ 42.359236][ T862] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f5b8bb131b8 [ 42.359237][ T862] RDX: 0000000000000000 RSI: fffffffffffffe90 RDI: 0000000000000000 [ 42.359238][ T862] RBP: 00007ffcc7dac290 R08: 000055a650b72728 R09: 0000000000000000 [ 42.359239][ T862] R10: 0000000000000000 R11: 0000000000000256 R12: 0000000000000000 [ 42.359240][ T862] R13: 00007f5b8b371050 R14: 00007f5b8c044d9e R15: 000055a650cd3710 [ 42.359246][ T862]