[ 16.027822][ T184] (udev-worker) (184) used greatest stack depth: 22696 bytes left [ 16.027841][ T184] BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:322 [ 16.027843][ T184] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 184, name: (udev-worker) [ 16.027845][ T184] preempt_count: 2, expected: 0 [ 16.027846][ T184] RCU nest depth: 0, expected: 0 [ 16.027846][ T184] locks held by (udev-worker)/184: 5, last CPU#1: [ 16.027849][ T184] #0: ffffffffba2027b8 (low_water_lock){+.+.}-{3:3}, at: do_exit+0x887/0xdc0 [ 16.027861][ T184] #1: ffffffffba399cc0 (console_lock){+.+.}-{0:0}, at: vprintk_emit+0x320/0x3e0 [ 16.027866][ T184] #2: ffffffffba399d38 (console_srcu){....}-{0:0}, at: console_flush_one_record+0x106/0x710 [ 16.027871][ T184] #3: ffffffffba289660 (console_owner){....}-{0:0}, at: console_lock_spinning_enable+0x40/0x60 [ 16.027875][ T184] #4: ffffffffba289560 (printk_legacy_map-wait-type-override){....}-{3:3}, at: console_emit_next_record+0x202/0x4f0 [ 16.027879][ T184] irq event stamp: 435744 [ 16.027880][ T184] hardirqs last enabled at (435743): [] __down_trylock_console_sem+0x86/0xa0 [ 16.027883][ T184] hardirqs last disabled at (435744): [] console_emit_next_record+0x3f8/0x4f0 [ 16.027885][ T184] softirqs last enabled at (435680): [] netlink_release+0x17b/0xcf0 [ 16.027890][ T184] softirqs last disabled at (435678): [] netlink_release+0xd2/0xcf0 [ 16.027893][ T184] Preemption disabled at: [ 16.027893][ T184] [<0000000000000000>] 0x0 [ 16.027901][ T184] CPU: 1 UID: 0 PID: 184 Comm: (udev-worker) Tainted: G W 7.2.0-virtme #1 PREEMPT(full) [ 16.027904][ T184] Tainted: [W]=WARN [ 16.027905][ T184] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 16.027907][ T184] Call Trace: [ 16.027909][ T184] [ 16.027911][ T184] dump_stack_lvl+0x6f/0xa0 [ 16.027917][ T184] __might_resched.cold+0x1fe/0x2c1 [ 16.027921][ T184] ? perf_trace_sched_switch+0x7c0/0x7c0 [ 16.027926][ T184] ? __kmalloc_noprof+0xdb/0x760 [ 16.027932][ T184] __kmalloc_noprof+0x443/0x760 [ 16.027934][ T184] ? alloc_buf.isra.0+0x4b/0x260 [ 16.027941][ T184] ? do_raw_spin_unlock+0x59/0x250 [ 16.027944][ T184] alloc_buf.isra.0+0x4b/0x260 [ 16.027947][ T184] put_chars+0x1e1/0x2f0 [ 16.027950][ T184] ? __send_to_port+0x420/0x420 [ 16.027952][ T184] ? printk_get_next_message+0x2fe/0x7d0 [ 16.027956][ T184] ? rcu_read_lock_any_held+0x3c/0x90 [ 16.027959][ T184] ? validate_chain+0x38b/0xc20 [ 16.027964][ T184] hvc_console_print+0x292/0x780 [ 16.027967][ T184] ? __lock_acquire+0x518/0xc20 [ 16.027969][ T184] ? __lock_acquire+0x518/0xc20 [ 16.027974][ T184] ? hvc_write+0x3a0/0x3a0 [ 16.027977][ T184] ? rcu_is_watching+0x16/0xd0 [ 16.027980][ T184] ? lock_acquire+0x13c/0x160 [ 16.027984][ T184] console_emit_next_record+0x252/0x4f0 [ 16.027988][ T184] ? devkmsg_read+0x4e0/0x4e0 [ 16.027993][ T184] ? rcu_is_watching+0x16/0xd0 [ 16.027995][ T184] ? lock_acquire+0x13c/0x160 [ 16.027999][ T184] console_flush_one_record+0x46f/0x710 [ 16.028003][ T184] ? console_emit_next_record+0x4f0/0x4f0 [ 16.028005][ T184] ? __lock_acquire+0x518/0xc20 [ 16.028011][ T184] console_unlock+0xee/0x1f0 [ 16.028014][ T184] ? console_flush_one_record+0x710/0x710 [ 16.028016][ T184] ? rcu_is_watching+0x16/0xd0 [ 16.028018][ T184] ? lock_acquire+0x60/0x160 [ 16.028022][ T184] ? __down_trylock_console_sem+0x5e/0xa0 [ 16.028024][ T184] ? vprintk_emit+0x320/0x3e0 [ 16.028027][ T184] vprintk_emit+0x37c/0x3e0 [ 16.028031][ T184] ? wake_up_klogd_work_func+0x90/0x90 [ 16.028034][ T184] ? __lock_acquire+0x518/0xc20 [ 16.028037][ T184] _printk+0xc7/0x100 [ 16.028041][ T184] ? snapshot_read.cold+0x21/0x21 [ 16.028044][ T184] ? do_raw_spin_lock+0x131/0x280 [ 16.028047][ T184] ? __rwlock_init+0x150/0x150 [ 16.028051][ T184] ? do_raw_spin_lock+0x131/0x280 [ 16.028054][ T184] do_exit.cold+0x82/0x9c [ 16.028058][ T184] ? exit_notify+0x890/0x890 [ 16.028059][ T184] ? __lock_release.isra.0+0x69/0x1a0 [ 16.028062][ T184] ? rcu_is_watching+0x16/0xd0 [ 16.028066][ T184] do_group_exit+0xb8/0x370 [ 16.028069][ T184] __x64_sys_exit_group+0x3c/0x50 [ 16.028071][ T184] x64_sys_call+0x1567/0x1570 [ 16.028073][ T184] do_syscall_64+0xff/0x530 [ 16.028077][ T184] ? exc_page_fault+0xee/0x100 [ 16.028080][ T184] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 16.028083][ T184] RIP: 0033:0x7f1c8917c1b8 [ 16.028087][ T184] Code: Unable to access opcode bytes at 0x7f1c8917c18e. [ 16.028088][ T184] RSP: 002b:00007ffc14362ea8 EFLAGS: 00000256 ORIG_RAX: 00000000000000e7 [ 16.028091][ T184] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f1c8917c1b8 [ 16.028092][ T184] RDX: 0000000000000000 RSI: fffffffffffffe90 RDI: 0000000000000000 [ 16.028093][ T184] RBP: 00007ffc14363030 R08: 000055c39194c6d8 R09: 0000000000000000 [ 16.028094][ T184] R10: 0000000000000000 R11: 0000000000000256 R12: 0000000000000000 [ 16.028095][ T184] R13: 00007f1c889da050 R14: 00007f1c896add9e R15: 000055c3917f45d0 [ 16.028102][ T184]