[ 15.440426][ T182] (udev-worker) (182) used greatest stack depth: 22696 bytes left [ 15.440446][ T182] BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:322 [ 15.440448][ T182] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 182, name: (udev-worker) [ 15.440450][ T182] preempt_count: 2, expected: 0 [ 15.440451][ T182] RCU nest depth: 0, expected: 0 [ 15.440452][ T182] locks held by (udev-worker)/182: 5, last CPU#0: [ 15.440454][ T182] #0: ffffffff998027b8 (low_water_lock){+.+.}-{3:3}, at: do_exit+0x887/0xdc0 [ 15.440466][ T182] #1: ffffffff99999cc0 (console_lock){+.+.}-{0:0}, at: vprintk_emit+0x320/0x3e0 [ 15.440471][ T182] #2: ffffffff99999d38 (console_srcu){....}-{0:0}, at: console_flush_one_record+0x106/0x710 [ 15.440475][ T182] #3: ffffffff99889660 (console_owner){....}-{0:0}, at: console_lock_spinning_enable+0x40/0x60 [ 15.440479][ T182] #4: ffffffff99889560 (printk_legacy_map-wait-type-override){....}-{3:3}, at: console_emit_next_record+0x202/0x4f0 [ 15.440483][ T182] irq event stamp: 68042 [ 15.440484][ T182] hardirqs last enabled at (68041): [] __down_trylock_console_sem+0x86/0xa0 [ 15.440487][ T182] hardirqs last disabled at (68042): [] console_emit_next_record+0x3f8/0x4f0 [ 15.440489][ T182] softirqs last enabled at (67978): [] netlink_release+0x17b/0xcf0 [ 15.440493][ T182] softirqs last disabled at (67976): [] netlink_release+0xd2/0xcf0 [ 15.440496][ T182] Preemption disabled at: [ 15.440497][ T182] [<0000000000000000>] 0x0 [ 15.440504][ T182] CPU: 0 UID: 0 PID: 182 Comm: (udev-worker) Tainted: G W 7.2.0-virtme #1 PREEMPT(full) [ 15.440507][ T182] Tainted: [W]=WARN [ 15.440508][ T182] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 15.440510][ T182] Call Trace: [ 15.440512][ T182] [ 15.440513][ T182] dump_stack_lvl+0x6f/0xa0 [ 15.440520][ T182] __might_resched.cold+0x1fe/0x2c1 [ 15.440525][ T182] ? perf_trace_sched_switch+0x7c0/0x7c0 [ 15.440529][ T182] ? __kmalloc_noprof+0xdb/0x760 [ 15.440535][ T182] __kmalloc_noprof+0x443/0x760 [ 15.440537][ T182] ? alloc_buf.isra.0+0x4b/0x260 [ 15.440544][ T182] ? do_raw_spin_unlock+0x59/0x250 [ 15.440547][ T182] alloc_buf.isra.0+0x4b/0x260 [ 15.440550][ T182] put_chars+0x1e1/0x2f0 [ 15.440553][ T182] ? __send_to_port+0x420/0x420 [ 15.440555][ T182] ? printk_get_next_message+0x2fe/0x7d0 [ 15.440559][ T182] ? rcu_read_lock_any_held+0x3c/0x90 [ 15.440563][ T182] ? validate_chain+0x38b/0xc20 [ 15.440568][ T182] hvc_console_print+0x292/0x780 [ 15.440571][ T182] ? __lock_acquire+0x518/0xc20 [ 15.440573][ T182] ? __lock_acquire+0x518/0xc20 [ 15.440577][ T182] ? hvc_write+0x3a0/0x3a0 [ 15.440581][ T182] ? rcu_is_watching+0x16/0xd0 [ 15.440583][ T182] ? lock_acquire+0x13c/0x160 [ 15.440587][ T182] console_emit_next_record+0x252/0x4f0 [ 15.440591][ T182] ? devkmsg_read+0x4e0/0x4e0 [ 15.440596][ T182] ? rcu_is_watching+0x16/0xd0 [ 15.440598][ T182] ? lock_acquire+0x13c/0x160 [ 15.440602][ T182] console_flush_one_record+0x46f/0x710 [ 15.440606][ T182] ? console_emit_next_record+0x4f0/0x4f0 [ 15.440608][ T182] ? __lock_acquire+0x518/0xc20 [ 15.440613][ T182] console_unlock+0xee/0x1f0 [ 15.440616][ T182] ? console_flush_one_record+0x710/0x710 [ 15.440618][ T182] ? rcu_is_watching+0x16/0xd0 [ 15.440620][ T182] ? lock_acquire+0x60/0x160 [ 15.440624][ T182] ? __down_trylock_console_sem+0x5e/0xa0 [ 15.440626][ T182] ? vprintk_emit+0x320/0x3e0 [ 15.440629][ T182] vprintk_emit+0x37c/0x3e0 [ 15.440632][ T182] ? wake_up_klogd_work_func+0x90/0x90 [ 15.440635][ T182] ? __lock_acquire+0x518/0xc20 [ 15.440639][ T182] _printk+0xc7/0x100 [ 15.440642][ T182] ? snapshot_read.cold+0x21/0x21 [ 15.440645][ T182] ? do_raw_spin_lock+0x131/0x280 [ 15.440648][ T182] ? __rwlock_init+0x150/0x150 [ 15.440652][ T182] ? do_raw_spin_lock+0x131/0x280 [ 15.440655][ T182] do_exit.cold+0x82/0x9c [ 15.440659][ T182] ? exit_notify+0x890/0x890 [ 15.440660][ T182] ? __lock_release.isra.0+0x69/0x1a0 [ 15.440663][ T182] ? rcu_is_watching+0x16/0xd0 [ 15.440667][ T182] do_group_exit+0xb8/0x370 [ 15.440670][ T182] __x64_sys_exit_group+0x3c/0x50 [ 15.440672][ T182] x64_sys_call+0x1567/0x1570 [ 15.440674][ T182] do_syscall_64+0xff/0x530 [ 15.440678][ T182] ? exc_page_fault+0xee/0x100 [ 15.440681][ T182] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 15.440683][ T182] RIP: 0033:0x7fe6410671b8 [ 15.440686][ T182] Code: Unable to access opcode bytes at 0x7fe64106718e. [ 15.440687][ T182] RSP: 002b:00007ffcafc46c38 EFLAGS: 00000256 ORIG_RAX: 00000000000000e7 [ 15.440689][ T182] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fe6410671b8 [ 15.440691][ T182] RDX: 0000000000000000 RSI: fffffffffffffe90 RDI: 0000000000000000 [ 15.440692][ T182] RBP: 00007ffcafc46dc0 R08: 000055fed967ddd8 R09: 0000000000000000 [ 15.440692][ T182] R10: 0000000000000000 R11: 0000000000000256 R12: 0000000000000000 [ 15.440693][ T182] R13: 00007fe6408c5050 R14: 00007fe641598d9e R15: 000055fed9530a50 [ 15.440700][ T182]