[ 17.454396][ T186] (udev-worker) (186) used greatest stack depth: 22696 bytes left [ 17.454418][ T186] BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:322 [ 17.454420][ T186] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 186, name: (udev-worker) [ 17.454422][ T186] preempt_count: 2, expected: 0 [ 17.454423][ T186] RCU nest depth: 0, expected: 0 [ 17.454424][ T186] locks held by (udev-worker)/186: 5, last CPU#0: [ 17.454426][ T186] #0: ffffffff896027b8 (low_water_lock){+.+.}-{3:3}, at: do_exit+0x887/0xdc0 [ 17.454438][ T186] #1: ffffffff89799cc0 (console_lock){+.+.}-{0:0}, at: vprintk_emit+0x320/0x3e0 [ 17.454443][ T186] #2: ffffffff89799d38 (console_srcu){....}-{0:0}, at: console_flush_one_record+0x106/0x710 [ 17.454448][ T186] #3: ffffffff89689660 (console_owner){....}-{0:0}, at: console_lock_spinning_enable+0x40/0x60 [ 17.454452][ T186] #4: ffffffff89689560 (printk_legacy_map-wait-type-override){....}-{3:3}, at: console_emit_next_record+0x202/0x4f0 [ 17.454456][ T186] irq event stamp: 456080 [ 17.454457][ T186] hardirqs last enabled at (456079): [] __down_trylock_console_sem+0x86/0xa0 [ 17.454460][ T186] hardirqs last disabled at (456080): [] console_emit_next_record+0x3f8/0x4f0 [ 17.454462][ T186] softirqs last enabled at (456014): [] netlink_release+0x17b/0xcf0 [ 17.454467][ T186] softirqs last disabled at (456012): [] netlink_release+0xd2/0xcf0 [ 17.454469][ T186] Preemption disabled at: [ 17.454470][ T186] [<0000000000000000>] 0x0 [ 17.454479][ T186] CPU: 0 UID: 0 PID: 186 Comm: (udev-worker) Tainted: G W 7.2.0-virtme #1 PREEMPT(full) [ 17.454483][ T186] Tainted: [W]=WARN [ 17.454484][ T186] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 17.454486][ T186] Call Trace: [ 17.454487][ T186] [ 17.454489][ T186] dump_stack_lvl+0x6f/0xa0 [ 17.454495][ T186] __might_resched.cold+0x1fe/0x2c1 [ 17.454500][ T186] ? perf_trace_sched_switch+0x7c0/0x7c0 [ 17.454505][ T186] ? __kmalloc_noprof+0xdb/0x760 [ 17.454510][ T186] __kmalloc_noprof+0x443/0x760 [ 17.454513][ T186] ? alloc_buf.isra.0+0x4b/0x260 [ 17.454525][ T186] ? do_raw_spin_unlock+0x59/0x250 [ 17.454528][ T186] alloc_buf.isra.0+0x4b/0x260 [ 17.454532][ T186] put_chars+0x1e1/0x2f0 [ 17.454536][ T186] ? __send_to_port+0x420/0x420 [ 17.454538][ T186] ? printk_get_next_message+0x2fe/0x7d0 [ 17.454542][ T186] ? rcu_read_lock_any_held+0x3c/0x90 [ 17.454546][ T186] ? validate_chain+0x38b/0xc20 [ 17.454550][ T186] hvc_console_print+0x292/0x780 [ 17.454553][ T186] ? __lock_acquire+0x518/0xc20 [ 17.454555][ T186] ? __lock_acquire+0x518/0xc20 [ 17.454560][ T186] ? hvc_write+0x3a0/0x3a0 [ 17.454564][ T186] ? rcu_is_watching+0x16/0xd0 [ 17.454566][ T186] ? lock_acquire+0x13c/0x160 [ 17.454570][ T186] console_emit_next_record+0x252/0x4f0 [ 17.454574][ T186] ? devkmsg_read+0x4e0/0x4e0 [ 17.454579][ T186] ? rcu_is_watching+0x16/0xd0 [ 17.454581][ T186] ? lock_acquire+0x13c/0x160 [ 17.454585][ T186] console_flush_one_record+0x46f/0x710 [ 17.454589][ T186] ? console_emit_next_record+0x4f0/0x4f0 [ 17.454591][ T186] ? __lock_acquire+0x518/0xc20 [ 17.454597][ T186] console_unlock+0xee/0x1f0 [ 17.454600][ T186] ? console_flush_one_record+0x710/0x710 [ 17.454602][ T186] ? rcu_is_watching+0x16/0xd0 [ 17.454604][ T186] ? lock_acquire+0x60/0x160 [ 17.454608][ T186] ? __down_trylock_console_sem+0x5e/0xa0 [ 17.454610][ T186] ? vprintk_emit+0x320/0x3e0 [ 17.454613][ T186] vprintk_emit+0x37c/0x3e0 [ 17.454616][ T186] ? wake_up_klogd_work_func+0x90/0x90 [ 17.454619][ T186] ? __lock_acquire+0x518/0xc20 [ 17.454623][ T186] _printk+0xc7/0x100 [ 17.454627][ T186] ? snapshot_read.cold+0x21/0x21 [ 17.454630][ T186] ? do_raw_spin_lock+0x131/0x280 [ 17.454633][ T186] ? __rwlock_init+0x150/0x150 [ 17.454637][ T186] ? do_raw_spin_lock+0x131/0x280 [ 17.454640][ T186] do_exit.cold+0x82/0x9c [ 17.454644][ T186] ? exit_notify+0x890/0x890 [ 17.454646][ T186] ? __lock_release.isra.0+0x69/0x1a0 [ 17.454649][ T186] ? rcu_is_watching+0x16/0xd0 [ 17.454652][ T186] do_group_exit+0xb8/0x370 [ 17.454655][ T186] __x64_sys_exit_group+0x3c/0x50 [ 17.454657][ T186] x64_sys_call+0x1567/0x1570 [ 17.454660][ T186] do_syscall_64+0xff/0x530 [ 17.454663][ T186] ? exc_page_fault+0xee/0x100 [ 17.454666][ T186] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 17.454669][ T186] RIP: 0033:0x7f6f6de6a1b8 [ 17.454671][ T186] Code: Unable to access opcode bytes at 0x7f6f6de6a18e. [ 17.454672][ T186] RSP: 002b:00007ffe8d71f608 EFLAGS: 00000256 ORIG_RAX: 00000000000000e7 [ 17.454675][ T186] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f6f6de6a1b8 [ 17.454676][ T186] RDX: 0000000000000000 RSI: fffffffffffffe90 RDI: 0000000000000000 [ 17.454677][ T186] RBP: 00007ffe8d71f790 R08: 000055e78a7efb08 R09: 0000000000000000 [ 17.454678][ T186] R10: 0000000000000000 R11: 0000000000000256 R12: 0000000000000000 [ 17.454679][ T186] R13: 00007f6f6d6c8050 R14: 00007f6f6e39bd9e R15: 000055e78a686050 [ 17.454686][ T186]