[ 14.671158][ T177] (udev-worker) (177) used greatest stack depth: 22696 bytes left [ 14.671725][ T177] BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:322 [ 14.671727][ T177] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 177, name: (udev-worker) [ 14.671729][ T177] preempt_count: 2, expected: 0 [ 14.671730][ T177] RCU nest depth: 0, expected: 0 [ 14.671731][ T177] locks held by (udev-worker)/177: 5, last CPU#3: [ 14.671733][ T177] #0: ffffffff930027b8 (low_water_lock){+.+.}-{3:3}, at: do_exit+0x887/0xdc0 [ 14.671745][ T177] #1: ffffffff93199cc0 (console_lock){+.+.}-{0:0}, at: vprintk_emit+0x320/0x3e0 [ 14.671750][ T177] #2: ffffffff93199d38 (console_srcu){....}-{0:0}, at: console_flush_one_record+0x106/0x710 [ 14.671754][ T177] #3: ffffffff93089660 (console_owner){....}-{0:0}, at: console_lock_spinning_enable+0x40/0x60 [ 14.671758][ T177] #4: ffffffff93089560 (printk_legacy_map-wait-type-override){....}-{3:3}, at: console_emit_next_record+0x202/0x4f0 [ 14.671761][ T177] irq event stamp: 96334 [ 14.671762][ T177] hardirqs last enabled at (96333): [] irqentry_exit+0x21c/0x790 [ 14.671767][ T177] hardirqs last disabled at (96334): [] console_emit_next_record+0x3f8/0x4f0 [ 14.671769][ T177] softirqs last enabled at (96332): [] handle_softirqs+0x67c/0x900 [ 14.671772][ T177] softirqs last disabled at (95111): [] __irq_exit_rcu+0x145/0x1c0 [ 14.671775][ T177] Preemption disabled at: [ 14.671776][ T177] [<0000000000000000>] 0x0 [ 14.671783][ T177] CPU: 3 UID: 0 PID: 177 Comm: (udev-worker) Tainted: G W 7.2.0-virtme #1 PREEMPT(full) [ 14.671786][ T177] Tainted: [W]=WARN [ 14.671787][ T177] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 14.671789][ T177] Call Trace: [ 14.671790][ T177] [ 14.671792][ T177] dump_stack_lvl+0x6f/0xa0 [ 14.671797][ T177] __might_resched.cold+0x1fe/0x2c1 [ 14.671802][ T177] ? perf_trace_sched_switch+0x7c0/0x7c0 [ 14.671806][ T177] ? __kmalloc_noprof+0xdb/0x760 [ 14.671810][ T177] __kmalloc_noprof+0x443/0x760 [ 14.671812][ T177] ? alloc_buf.isra.0+0x4b/0x260 [ 14.671818][ T177] ? do_raw_spin_unlock+0x59/0x250 [ 14.671820][ T177] alloc_buf.isra.0+0x4b/0x260 [ 14.671823][ T177] put_chars+0x1e1/0x2f0 [ 14.671826][ T177] ? __send_to_port+0x420/0x420 [ 14.671827][ T177] ? printk_get_next_message+0x2fe/0x7d0 [ 14.671830][ T177] ? rcu_read_lock_any_held+0x3c/0x90 [ 14.671833][ T177] ? validate_chain+0x38b/0xc20 [ 14.671837][ T177] hvc_console_print+0x292/0x780 [ 14.671840][ T177] ? __lock_acquire+0x518/0xc20 [ 14.671841][ T177] ? __lock_acquire+0x518/0xc20 [ 14.671845][ T177] ? hvc_write+0x3a0/0x3a0 [ 14.671848][ T177] ? rcu_is_watching+0x16/0xd0 [ 14.671851][ T177] ? lock_acquire+0x13c/0x160 [ 14.671855][ T177] console_emit_next_record+0x252/0x4f0 [ 14.671858][ T177] ? devkmsg_read+0x4e0/0x4e0 [ 14.671862][ T177] ? rcu_is_watching+0x16/0xd0 [ 14.671864][ T177] ? lock_acquire+0x13c/0x160 [ 14.671868][ T177] console_flush_one_record+0x46f/0x710 [ 14.671872][ T177] ? console_emit_next_record+0x4f0/0x4f0 [ 14.671873][ T177] ? __lock_acquire+0x518/0xc20 [ 14.671878][ T177] console_unlock+0xee/0x1f0 [ 14.671880][ T177] ? console_flush_one_record+0x710/0x710 [ 14.671882][ T177] ? rcu_is_watching+0x16/0xd0 [ 14.671884][ T177] ? lock_acquire+0x60/0x160 [ 14.671887][ T177] ? __down_trylock_console_sem+0x5e/0xa0 [ 14.671889][ T177] ? vprintk_emit+0x320/0x3e0 [ 14.671892][ T177] vprintk_emit+0x37c/0x3e0 [ 14.671895][ T177] ? wake_up_klogd_work_func+0x90/0x90 [ 14.671898][ T177] ? __lock_acquire+0x518/0xc20 [ 14.671902][ T177] _printk+0xc7/0x100 [ 14.671905][ T177] ? snapshot_read.cold+0x21/0x21 [ 14.671908][ T177] ? do_raw_spin_lock+0x131/0x280 [ 14.671910][ T177] ? __rwlock_init+0x150/0x150 [ 14.671914][ T177] ? do_raw_spin_lock+0x131/0x280 [ 14.671917][ T177] do_exit.cold+0x82/0x9c [ 14.671920][ T177] ? exit_notify+0x890/0x890 [ 14.671922][ T177] ? __lock_release.isra.0+0x69/0x1a0 [ 14.671924][ T177] ? rcu_is_watching+0x16/0xd0 [ 14.671928][ T177] do_group_exit+0xb8/0x370 [ 14.671931][ T177] __x64_sys_exit_group+0x3c/0x50 [ 14.671934][ T177] x64_sys_call+0x1567/0x1570 [ 14.671936][ T177] do_syscall_64+0xff/0x530 [ 14.671938][ T177] ? exc_page_fault+0xee/0x100 [ 14.671940][ T177] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 14.671942][ T177] RIP: 0033:0x7faea6d271b8 [ 14.671945][ T177] Code: Unable to access opcode bytes at 0x7faea6d2718e. [ 14.671946][ T177] RSP: 002b:00007fff23f240e8 EFLAGS: 00000256 ORIG_RAX: 00000000000000e7 [ 14.671948][ T177] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007faea6d271b8 [ 14.671950][ T177] RDX: 0000000000000000 RSI: fffffffffffffe90 RDI: 0000000000000000 [ 14.671951][ T177] RBP: 00007fff23f24270 R08: 000055ab43255368 R09: 0000000000000000 [ 14.671951][ T177] R10: 0000000000000000 R11: 0000000000000256 R12: 0000000000000000 [ 14.671952][ T177] R13: 00007faea6585050 R14: 00007faea7258d9e R15: 000055ab4324ebe0 [ 14.671959][ T177]