[ 13.578287][ T84] (udev-worker) (84) used greatest stack depth: 22696 bytes left [ 13.578309][ T84] BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:322 [ 13.578312][ T84] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 84, name: (udev-worker) [ 13.578314][ T84] preempt_count: 2, expected: 0 [ 13.578316][ T84] RCU nest depth: 0, expected: 0 [ 13.578317][ T84] locks held by (udev-worker)/84: 5, last CPU#3: [ 13.578320][ T84] #0: ffffffffab0027b8 (low_water_lock){+.+.}-{3:3}, at: do_exit+0x887/0xdc0 [ 13.578334][ T84] #1: ffffffffab199dc0 (console_lock){+.+.}-{0:0}, at: vprintk_emit+0x320/0x3e0 [ 13.578341][ T84] #2: ffffffffab199e38 (console_srcu){....}-{0:0}, at: console_flush_one_record+0x106/0x710 [ 13.578347][ T84] #3: ffffffffab089760 (console_owner){....}-{0:0}, at: console_lock_spinning_enable+0x40/0x60 [ 13.578354][ T84] #4: ffffffffab089660 (printk_legacy_map-wait-type-override){....}-{3:3}, at: console_emit_next_record+0x202/0x4f0 [ 13.578360][ T84] irq event stamp: 483544 [ 13.578361][ T84] hardirqs last enabled at (483543): [] __down_trylock_console_sem+0x86/0xa0 [ 13.578365][ T84] hardirqs last disabled at (483544): [] console_emit_next_record+0x3f8/0x4f0 [ 13.578368][ T84] softirqs last enabled at (483480): [] netlink_release+0x17b/0xcf0 [ 13.578373][ T84] softirqs last disabled at (483478): [] netlink_release+0xd2/0xcf0 [ 13.578377][ T84] Preemption disabled at: [ 13.578378][ T84] [<0000000000000000>] 0x0 [ 13.578387][ T84] CPU: 3 UID: 0 PID: 84 Comm: (udev-worker) Tainted: G W 7.2.0-virtme #1 PREEMPT(full) [ 13.578391][ T84] Tainted: [W]=WARN [ 13.578393][ T84] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 13.578395][ T84] Call Trace: [ 13.578397][ T84] [ 13.578399][ T84] dump_stack_lvl+0x6f/0xa0 [ 13.578408][ T84] __might_resched.cold+0x1fe/0x2c1 [ 13.578414][ T84] ? perf_trace_sched_switch+0x7c0/0x7c0 [ 13.578419][ T84] ? __kmalloc_noprof+0xdb/0x760 [ 13.578427][ T84] __kmalloc_noprof+0x443/0x760 [ 13.578431][ T84] ? alloc_buf.isra.0+0x4b/0x260 [ 13.578440][ T84] ? do_raw_spin_unlock+0x59/0x250 [ 13.578444][ T84] alloc_buf.isra.0+0x4b/0x260 [ 13.578450][ T84] put_chars+0x1e1/0x2f0 [ 13.578455][ T84] ? __send_to_port+0x420/0x420 [ 13.578458][ T84] ? printk_get_next_message+0x2fe/0x7d0 [ 13.578463][ T84] ? rcu_read_lock_any_held+0x3c/0x90 [ 13.578467][ T84] ? validate_chain+0x38b/0xc20 [ 13.578474][ T84] hvc_console_print+0x292/0x780 [ 13.578479][ T84] ? __lock_acquire+0x518/0xc20 [ 13.578481][ T84] ? __lock_acquire+0x518/0xc20 [ 13.578489][ T84] ? hvc_write+0x3a0/0x3a0 [ 13.578495][ T84] ? rcu_is_watching+0x16/0xd0 [ 13.578500][ T84] ? lock_acquire+0x13c/0x160 [ 13.578507][ T84] console_emit_next_record+0x252/0x4f0 [ 13.578513][ T84] ? devkmsg_read+0x4e0/0x4e0 [ 13.578520][ T84] ? rcu_is_watching+0x16/0xd0 [ 13.578524][ T84] ? lock_acquire+0x13c/0x160 [ 13.578531][ T84] console_flush_one_record+0x46f/0x710 [ 13.578538][ T84] ? console_emit_next_record+0x4f0/0x4f0 [ 13.578540][ T84] ? __lock_acquire+0x518/0xc20 [ 13.578549][ T84] console_unlock+0xee/0x1f0 [ 13.578554][ T84] ? console_flush_one_record+0x710/0x710 [ 13.578556][ T84] ? rcu_is_watching+0x16/0xd0 [ 13.578560][ T84] ? lock_acquire+0xa0/0x160 [ 13.578566][ T84] ? __down_trylock_console_sem+0x5e/0xa0 [ 13.578569][ T84] ? vprintk_emit+0x320/0x3e0 [ 13.578574][ T84] vprintk_emit+0x37c/0x3e0 [ 13.578580][ T84] ? wake_up_klogd_work_func+0x90/0x90 [ 13.578586][ T84] ? __lock_acquire+0x518/0xc20 [ 13.578591][ T84] _printk+0xc7/0x100 [ 13.578596][ T84] ? snapshot_read.cold+0x21/0x21 [ 13.578600][ T84] ? do_raw_spin_lock+0x131/0x280 [ 13.578605][ T84] ? __rwlock_init+0x150/0x150 [ 13.578611][ T84] ? do_raw_spin_lock+0x131/0x280 [ 13.578616][ T84] do_exit.cold+0x82/0x9c [ 13.578621][ T84] ? exit_notify+0x890/0x890 [ 13.578623][ T84] ? __lock_release.isra.0+0x69/0x1a0 [ 13.578628][ T84] ? rcu_is_watching+0x16/0xd0 [ 13.578635][ T84] do_group_exit+0xb8/0x370 [ 13.578640][ T84] __x64_sys_exit_group+0x3c/0x50 [ 13.578643][ T84] x64_sys_call+0x1567/0x1570 [ 13.578646][ T84] do_syscall_64+0xff/0x530 [ 13.578650][ T84] ? exc_page_fault+0xee/0x100 [ 13.578655][ T84] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 13.578659][ T84] RIP: 0033:0x7f662aab71b8 [ 13.578662][ T84] Code: Unable to access opcode bytes at 0x7f662aab718e. [ 13.578664][ T84] RSP: 002b:00007ffcf2b395a8 EFLAGS: 00000256 ORIG_RAX: 00000000000000e7 [ 13.578667][ T84] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f662aab71b8 [ 13.578669][ T84] RDX: 0000000000000000 RSI: fffffffffffffe90 RDI: 0000000000000000 [ 13.578670][ T84] RBP: 00007ffcf2b39730 R08: 000056139f213a38 R09: 0000000000000000 [ 13.578672][ T84] R10: 0000000000000000 R11: 0000000000000256 R12: 0000000000000000 [ 13.578673][ T84] R13: 00007f662a315050 R14: 00007f662afe8d9e R15: 000056139f21d390 [ 13.578687][ T84]