[ 15.665340][ T185] (udev-worker) (185) used greatest stack depth: 22696 bytes left [ 15.665361][ T185] BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:322 [ 15.665363][ T185] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 185, name: (udev-worker) [ 15.665364][ T185] preempt_count: 2, expected: 0 [ 15.665365][ T185] RCU nest depth: 0, expected: 0 [ 15.665366][ T185] locks held by (udev-worker)/185: 5, last CPU#3: [ 15.665368][ T185] #0: ffffffffac2027b8 (low_water_lock){+.+.}-{3:3}, at: do_exit+0x887/0xdc0 [ 15.665381][ T185] #1: ffffffffac399cc0 (console_lock){+.+.}-{0:0}, at: vprintk_emit+0x320/0x3e0 [ 15.665386][ T185] #2: ffffffffac399d38 (console_srcu){....}-{0:0}, at: console_flush_one_record+0x106/0x710 [ 15.665390][ T185] #3: ffffffffac289660 (console_owner){....}-{0:0}, at: console_lock_spinning_enable+0x40/0x60 [ 15.665394][ T185] #4: ffffffffac289560 (printk_legacy_map-wait-type-override){....}-{3:3}, at: console_emit_next_record+0x202/0x4f0 [ 15.665399][ T185] irq event stamp: 381362 [ 15.665399][ T185] hardirqs last enabled at (381361): [] __down_trylock_console_sem+0x86/0xa0 [ 15.665403][ T185] hardirqs last disabled at (381362): [] console_emit_next_record+0x3f8/0x4f0 [ 15.665405][ T185] softirqs last enabled at (381298): [] netlink_release+0x17b/0xcf0 [ 15.665410][ T185] softirqs last disabled at (381296): [] netlink_release+0xd2/0xcf0 [ 15.665412][ T185] Preemption disabled at: [ 15.665413][ T185] [<0000000000000000>] 0x0 [ 15.665420][ T185] CPU: 3 UID: 0 PID: 185 Comm: (udev-worker) Tainted: G W 7.2.0-virtme #1 PREEMPT(full) [ 15.665424][ T185] Tainted: [W]=WARN [ 15.665425][ T185] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 15.665426][ T185] Call Trace: [ 15.665428][ T185] [ 15.665429][ T185] dump_stack_lvl+0x6f/0xa0 [ 15.665436][ T185] __might_resched.cold+0x1fe/0x2c1 [ 15.665440][ T185] ? perf_trace_sched_switch+0x7c0/0x7c0 [ 15.665444][ T185] ? __kmalloc_noprof+0xdb/0x760 [ 15.665450][ T185] __kmalloc_noprof+0x443/0x760 [ 15.665452][ T185] ? alloc_buf.isra.0+0x4b/0x260 [ 15.665459][ T185] ? do_raw_spin_unlock+0x59/0x250 [ 15.665462][ T185] alloc_buf.isra.0+0x4b/0x260 [ 15.665465][ T185] put_chars+0x1e1/0x2f0 [ 15.665468][ T185] ? __send_to_port+0x420/0x420 [ 15.665470][ T185] ? printk_get_next_message+0x2fe/0x7d0 [ 15.665474][ T185] ? rcu_read_lock_any_held+0x3c/0x90 [ 15.665477][ T185] ? validate_chain+0x38b/0xc20 [ 15.665482][ T185] hvc_console_print+0x292/0x780 [ 15.665485][ T185] ? __lock_acquire+0x518/0xc20 [ 15.665487][ T185] ? __lock_acquire+0x518/0xc20 [ 15.665492][ T185] ? hvc_write+0x3a0/0x3a0 [ 15.665495][ T185] ? rcu_is_watching+0x16/0xd0 [ 15.665497][ T185] ? lock_acquire+0x13c/0x160 [ 15.665501][ T185] console_emit_next_record+0x252/0x4f0 [ 15.665505][ T185] ? devkmsg_read+0x4e0/0x4e0 [ 15.665511][ T185] ? rcu_is_watching+0x16/0xd0 [ 15.665514][ T185] ? lock_acquire+0x13c/0x160 [ 15.665519][ T185] console_flush_one_record+0x46f/0x710 [ 15.665523][ T185] ? console_emit_next_record+0x4f0/0x4f0 [ 15.665525][ T185] ? __lock_acquire+0x518/0xc20 [ 15.665531][ T185] console_unlock+0xee/0x1f0 [ 15.665534][ T185] ? console_flush_one_record+0x710/0x710 [ 15.665536][ T185] ? rcu_is_watching+0x16/0xd0 [ 15.665537][ T185] ? lock_acquire+0x60/0x160 [ 15.665541][ T185] ? __down_trylock_console_sem+0x5e/0xa0 [ 15.665543][ T185] ? vprintk_emit+0x320/0x3e0 [ 15.665546][ T185] vprintk_emit+0x37c/0x3e0 [ 15.665549][ T185] ? wake_up_klogd_work_func+0x90/0x90 [ 15.665552][ T185] ? __lock_acquire+0x518/0xc20 [ 15.665556][ T185] _printk+0xc7/0x100 [ 15.665560][ T185] ? snapshot_read.cold+0x21/0x21 [ 15.665562][ T185] ? do_raw_spin_lock+0x131/0x280 [ 15.665565][ T185] ? __rwlock_init+0x150/0x150 [ 15.665569][ T185] ? do_raw_spin_lock+0x131/0x280 [ 15.665572][ T185] do_exit.cold+0x82/0x9c [ 15.665576][ T185] ? exit_notify+0x890/0x890 [ 15.665577][ T185] ? __lock_release.isra.0+0x69/0x1a0 [ 15.665580][ T185] ? rcu_is_watching+0x16/0xd0 [ 15.665584][ T185] do_group_exit+0xb8/0x370 [ 15.665587][ T185] __x64_sys_exit_group+0x3c/0x50 [ 15.665589][ T185] x64_sys_call+0x1567/0x1570 [ 15.665591][ T185] do_syscall_64+0xff/0x530 [ 15.665594][ T185] ? exc_page_fault+0xee/0x100 [ 15.665597][ T185] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 15.665600][ T185] RIP: 0033:0x7fa8510751b8 [ 15.665602][ T185] Code: Unable to access opcode bytes at 0x7fa85107518e. [ 15.665603][ T185] RSP: 002b:00007ffd0efc4828 EFLAGS: 00000256 ORIG_RAX: 00000000000000e7 [ 15.665606][ T185] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fa8510751b8 [ 15.665607][ T185] RDX: 0000000000000000 RSI: fffffffffffffe90 RDI: 0000000000000000 [ 15.665608][ T185] RBP: 00007ffd0efc49b0 R08: 0000556c17097a18 R09: 0000000000000000 [ 15.665609][ T185] R10: 0000000000000000 R11: 0000000000000256 R12: 0000000000000000 [ 15.665610][ T185] R13: 00007fa8508d3050 R14: 00007fa8515a6d9e R15: 0000556c1706eef0 [ 15.665616][ T185]