[ 12.251507][ T81] (udev-worker) (81) used greatest stack depth: 22696 bytes left [ 12.251524][ T81] BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:322 [ 12.251526][ T81] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 81, name: (udev-worker) [ 12.251528][ T81] preempt_count: 2, expected: 0 [ 12.251529][ T81] RCU nest depth: 0, expected: 0 [ 12.251529][ T81] locks held by (udev-worker)/81: 5, last CPU#2: [ 12.251532][ T81] #0: ffffffffb20027b8 (low_water_lock){+.+.}-{3:3}, at: do_exit+0x887/0xdc0 [ 12.251542][ T81] #1: ffffffffb2199dc0 (console_lock){+.+.}-{0:0}, at: vprintk_emit+0x320/0x3e0 [ 12.251548][ T81] #2: ffffffffb2199e38 (console_srcu){....}-{0:0}, at: console_flush_one_record+0x106/0x710 [ 12.251552][ T81] #3: ffffffffb2089760 (console_owner){....}-{0:0}, at: console_lock_spinning_enable+0x40/0x60 [ 12.251556][ T81] #4: ffffffffb2089660 (printk_legacy_map-wait-type-override){....}-{3:3}, at: console_emit_next_record+0x202/0x4f0 [ 12.251560][ T81] irq event stamp: 426952 [ 12.251561][ T81] hardirqs last enabled at (426951): [] __down_trylock_console_sem+0x86/0xa0 [ 12.251563][ T81] hardirqs last disabled at (426952): [] console_emit_next_record+0x3f8/0x4f0 [ 12.251565][ T81] softirqs last enabled at (426888): [] netlink_release+0x17b/0xcf0 [ 12.251570][ T81] softirqs last disabled at (426886): [] netlink_release+0xd2/0xcf0 [ 12.251572][ T81] Preemption disabled at: [ 12.251573][ T81] [<0000000000000000>] 0x0 [ 12.251579][ T81] CPU: 2 UID: 0 PID: 81 Comm: (udev-worker) Tainted: G W 7.2.0-virtme #1 PREEMPT(full) [ 12.251583][ T81] Tainted: [W]=WARN [ 12.251584][ T81] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 12.251585][ T81] Call Trace: [ 12.251587][ T81] [ 12.251589][ T81] dump_stack_lvl+0x6f/0xa0 [ 12.251595][ T81] __might_resched.cold+0x1fe/0x2c1 [ 12.251600][ T81] ? perf_trace_sched_switch+0x7c0/0x7c0 [ 12.251604][ T81] ? __kmalloc_noprof+0xdb/0x760 [ 12.251609][ T81] __kmalloc_noprof+0x443/0x760 [ 12.251611][ T81] ? alloc_buf.isra.0+0x4b/0x260 [ 12.251617][ T81] ? do_raw_spin_unlock+0x59/0x250 [ 12.251620][ T81] alloc_buf.isra.0+0x4b/0x260 [ 12.251623][ T81] put_chars+0x1e1/0x2f0 [ 12.251627][ T81] ? __send_to_port+0x420/0x420 [ 12.251629][ T81] ? printk_get_next_message+0x2fe/0x7d0 [ 12.251632][ T81] ? rcu_read_lock_any_held+0x3c/0x90 [ 12.251635][ T81] ? validate_chain+0x38b/0xc20 [ 12.251639][ T81] hvc_console_print+0x292/0x780 [ 12.251642][ T81] ? __lock_acquire+0x518/0xc20 [ 12.251644][ T81] ? __lock_acquire+0x518/0xc20 [ 12.251648][ T81] ? hvc_write+0x3a0/0x3a0 [ 12.251651][ T81] ? rcu_is_watching+0x16/0xd0 [ 12.251655][ T81] ? lock_acquire+0x13c/0x160 [ 12.251658][ T81] console_emit_next_record+0x252/0x4f0 [ 12.251662][ T81] ? devkmsg_read+0x4e0/0x4e0 [ 12.251666][ T81] ? rcu_is_watching+0x16/0xd0 [ 12.251669][ T81] ? lock_acquire+0x13c/0x160 [ 12.251672][ T81] console_flush_one_record+0x46f/0x710 [ 12.251676][ T81] ? console_emit_next_record+0x4f0/0x4f0 [ 12.251678][ T81] ? __lock_acquire+0x518/0xc20 [ 12.251683][ T81] console_unlock+0xee/0x1f0 [ 12.251685][ T81] ? console_flush_one_record+0x710/0x710 [ 12.251687][ T81] ? rcu_is_watching+0x16/0xd0 [ 12.251690][ T81] ? lock_acquire+0xa0/0x160 [ 12.251693][ T81] ? __down_trylock_console_sem+0x5e/0xa0 [ 12.251695][ T81] ? vprintk_emit+0x320/0x3e0 [ 12.251698][ T81] vprintk_emit+0x37c/0x3e0 [ 12.251701][ T81] ? wake_up_klogd_work_func+0x90/0x90 [ 12.251705][ T81] ? __lock_acquire+0x518/0xc20 [ 12.251708][ T81] _printk+0xc7/0x100 [ 12.251712][ T81] ? snapshot_read.cold+0x21/0x21 [ 12.251714][ T81] ? do_raw_spin_lock+0x131/0x280 [ 12.251717][ T81] ? __rwlock_init+0x150/0x150 [ 12.251720][ T81] ? do_raw_spin_lock+0x131/0x280 [ 12.251723][ T81] do_exit.cold+0x82/0x9c [ 12.251726][ T81] ? exit_notify+0x890/0x890 [ 12.251728][ T81] ? __lock_release.isra.0+0x69/0x1a0 [ 12.251730][ T81] ? rcu_is_watching+0x16/0xd0 [ 12.251734][ T81] do_group_exit+0xb8/0x370 [ 12.251737][ T81] __x64_sys_exit_group+0x3c/0x50 [ 12.251738][ T81] x64_sys_call+0x1567/0x1570 [ 12.251740][ T81] do_syscall_64+0xff/0x530 [ 12.251744][ T81] ? exc_page_fault+0xee/0x100 [ 12.251747][ T81] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 12.251749][ T81] RIP: 0033:0x7fbc521531b8 [ 12.251751][ T81] Code: Unable to access opcode bytes at 0x7fbc5215318e. [ 12.251752][ T81] RSP: 002b:00007ffce8070b88 EFLAGS: 00000256 ORIG_RAX: 00000000000000e7 [ 12.251755][ T81] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fbc521531b8 [ 12.251756][ T81] RDX: 0000000000000000 RSI: fffffffffffffe90 RDI: 0000000000000000 [ 12.251757][ T81] RBP: 00007ffce8070d10 R08: 000055a4cd767228 R09: 0000000000000000 [ 12.251758][ T81] R10: 0000000000000000 R11: 0000000000000256 R12: 0000000000000000 [ 12.251759][ T81] R13: 00007fbc519b1050 R14: 00007fbc52684d9e R15: 000055a4cd89d6c0 [ 12.251765][ T81]