[ 14.963038][ T181] (udev-worker) (181) used greatest stack depth: 22696 bytes left [ 14.963062][ T181] BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:322 [ 14.963064][ T181] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 181, name: (udev-worker) [ 14.963067][ T181] preempt_count: 2, expected: 0 [ 14.963068][ T181] RCU nest depth: 0, expected: 0 [ 14.963069][ T181] locks held by (udev-worker)/181: 5, last CPU#1: [ 14.963072][ T181] #0: ffffffff920027b8 (low_water_lock){+.+.}-{3:3}, at: do_exit+0x887/0xdc0 [ 14.963086][ T181] #1: ffffffff92199cc0 (console_lock){+.+.}-{0:0}, at: vprintk_emit+0x320/0x3e0 [ 14.963093][ T181] #2: ffffffff92199d38 (console_srcu){....}-{0:0}, at: console_flush_one_record+0x106/0x710 [ 14.963099][ T181] #3: ffffffff92089660 (console_owner){....}-{0:0}, at: console_lock_spinning_enable+0x40/0x60 [ 14.963105][ T181] #4: ffffffff92089560 (printk_legacy_map-wait-type-override){....}-{3:3}, at: console_emit_next_record+0x202/0x4f0 [ 14.963112][ T181] irq event stamp: 149034 [ 14.963113][ T181] hardirqs last enabled at (149033): [] __down_trylock_console_sem+0x86/0xa0 [ 14.963117][ T181] hardirqs last disabled at (149034): [] console_emit_next_record+0x3f8/0x4f0 [ 14.963121][ T181] softirqs last enabled at (148846): [] unix_release_sock+0x446/0xe50 [ 14.963126][ T181] softirqs last disabled at (148844): [] unix_release_sock+0x39f/0xe50 [ 14.963129][ T181] Preemption disabled at: [ 14.963130][ T181] [<0000000000000000>] 0x0 [ 14.963138][ T181] CPU: 1 UID: 0 PID: 181 Comm: (udev-worker) Tainted: G W 7.2.0-virtme #1 PREEMPT(full) [ 14.963143][ T181] Tainted: [W]=WARN [ 14.963145][ T181] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 14.963147][ T181] Call Trace: [ 14.963149][ T181] [ 14.963151][ T181] dump_stack_lvl+0x6f/0xa0 [ 14.963160][ T181] __might_resched.cold+0x1fe/0x2c1 [ 14.963166][ T181] ? perf_trace_sched_switch+0x7c0/0x7c0 [ 14.963172][ T181] ? __kmalloc_noprof+0xdb/0x760 [ 14.963180][ T181] __kmalloc_noprof+0x443/0x760 [ 14.963184][ T181] ? alloc_buf.isra.0+0x4b/0x260 [ 14.963193][ T181] ? do_raw_spin_unlock+0x59/0x250 [ 14.963196][ T181] alloc_buf.isra.0+0x4b/0x260 [ 14.963202][ T181] put_chars+0x1e1/0x2f0 [ 14.963207][ T181] ? __send_to_port+0x420/0x420 [ 14.963209][ T181] ? printk_get_next_message+0x2fe/0x7d0 [ 14.963215][ T181] ? rcu_read_lock_any_held+0x3c/0x90 [ 14.963220][ T181] ? validate_chain+0x38b/0xc20 [ 14.963227][ T181] hvc_console_print+0x292/0x780 [ 14.963232][ T181] ? __lock_acquire+0x518/0xc20 [ 14.963234][ T181] ? __lock_acquire+0x518/0xc20 [ 14.963243][ T181] ? hvc_write+0x3a0/0x3a0 [ 14.963249][ T181] ? rcu_is_watching+0x16/0xd0 [ 14.963254][ T181] ? lock_acquire+0x13c/0x160 [ 14.963262][ T181] console_emit_next_record+0x252/0x4f0 [ 14.963268][ T181] ? devkmsg_read+0x4e0/0x4e0 [ 14.963276][ T181] ? rcu_is_watching+0x16/0xd0 [ 14.963279][ T181] ? lock_acquire+0x13c/0x160 [ 14.963286][ T181] console_flush_one_record+0x46f/0x710 [ 14.963294][ T181] ? console_emit_next_record+0x4f0/0x4f0 [ 14.963296][ T181] ? __lock_acquire+0x518/0xc20 [ 14.963306][ T181] console_unlock+0xee/0x1f0 [ 14.963311][ T181] ? console_flush_one_record+0x710/0x710 [ 14.963313][ T181] ? rcu_is_watching+0x16/0xd0 [ 14.963317][ T181] ? lock_acquire+0x60/0x160 [ 14.963323][ T181] ? __down_trylock_console_sem+0x5e/0xa0 [ 14.963326][ T181] ? vprintk_emit+0x320/0x3e0 [ 14.963331][ T181] vprintk_emit+0x37c/0x3e0 [ 14.963336][ T181] ? wake_up_klogd_work_func+0x90/0x90 [ 14.963342][ T181] ? __lock_acquire+0x518/0xc20 [ 14.963348][ T181] _printk+0xc7/0x100 [ 14.963353][ T181] ? snapshot_read.cold+0x21/0x21 [ 14.963358][ T181] ? do_raw_spin_lock+0x131/0x280 [ 14.963362][ T181] ? __rwlock_init+0x150/0x150 [ 14.963369][ T181] ? do_raw_spin_lock+0x131/0x280 [ 14.963374][ T181] do_exit.cold+0x82/0x9c [ 14.963379][ T181] ? exit_notify+0x890/0x890 [ 14.963381][ T181] ? __lock_release.isra.0+0x69/0x1a0 [ 14.963391][ T181] ? rcu_is_watching+0x16/0xd0 [ 14.963397][ T181] do_group_exit+0xb8/0x370 [ 14.963402][ T181] __x64_sys_exit_group+0x3c/0x50 [ 14.963405][ T181] x64_sys_call+0x1567/0x1570 [ 14.963409][ T181] do_syscall_64+0xff/0x530 [ 14.963413][ T181] ? exc_page_fault+0xee/0x100 [ 14.963418][ T181] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 14.963421][ T181] RIP: 0033:0x7f3e5cc8b1b8 [ 14.963424][ T181] Code: Unable to access opcode bytes at 0x7f3e5cc8b18e. [ 14.963426][ T181] RSP: 002b:00007fff38f12d68 EFLAGS: 00000256 ORIG_RAX: 00000000000000e7 [ 14.963429][ T181] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f3e5cc8b1b8 [ 14.963431][ T181] RDX: 0000000000000000 RSI: fffffffffffffe90 RDI: 0000000000000000 [ 14.963433][ T181] RBP: 00007fff38f12ef0 R08: 0000557ffe56bb58 R09: 0000000000000000 [ 14.963434][ T181] R10: 0000000000000000 R11: 0000000000000256 R12: 0000000000000000 [ 14.963435][ T181] R13: 00007f3e5c4e9050 R14: 00007f3e5d1bcd9e R15: 0000557ffe3e90c0 [ 14.963449][ T181]