[ 13.533563][ T91] (udev-worker) (91) used greatest stack depth: 22696 bytes left [ 13.533583][ T91] BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:322 [ 13.533585][ T91] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 91, name: (udev-worker) [ 13.533587][ T91] preempt_count: 2, expected: 0 [ 13.533587][ T91] RCU nest depth: 0, expected: 0 [ 13.533588][ T91] locks held by (udev-worker)/91: 5, last CPU#3: [ 13.533590][ T91] #0: ffffffff9f6027b8 (low_water_lock){+.+.}-{3:3}, at: do_exit+0x887/0xdc0 [ 13.533603][ T91] #1: ffffffff9f799cc0 (console_lock){+.+.}-{0:0}, at: vprintk_emit+0x320/0x3e0 [ 13.533609][ T91] #2: ffffffff9f799d38 (console_srcu){....}-{0:0}, at: console_flush_one_record+0x106/0x710 [ 13.533612][ T91] #3: ffffffff9f689660 (console_owner){....}-{0:0}, at: console_lock_spinning_enable+0x40/0x60 [ 13.533616][ T91] #4: ffffffff9f689560 (printk_legacy_map-wait-type-override){....}-{3:3}, at: console_emit_next_record+0x202/0x4f0 [ 13.533619][ T91] irq event stamp: 432960 [ 13.533620][ T91] hardirqs last enabled at (432959): [] __down_trylock_console_sem+0x86/0xa0 [ 13.533622][ T91] hardirqs last disabled at (432960): [] console_emit_next_record+0x3f8/0x4f0 [ 13.533624][ T91] softirqs last enabled at (432896): [] netlink_release+0x17b/0xcf0 [ 13.533628][ T91] softirqs last disabled at (432894): [] netlink_release+0xd2/0xcf0 [ 13.533630][ T91] Preemption disabled at: [ 13.533631][ T91] [<0000000000000000>] 0x0 [ 13.533638][ T91] CPU: 3 UID: 0 PID: 91 Comm: (udev-worker) Tainted: G W 7.2.0-virtme #1 PREEMPT(full) [ 13.533642][ T91] Tainted: [W]=WARN [ 13.533643][ T91] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 13.533645][ T91] Call Trace: [ 13.533646][ T91] [ 13.533648][ T91] dump_stack_lvl+0x6f/0xa0 [ 13.533654][ T91] __might_resched.cold+0x1fe/0x2c1 [ 13.533659][ T91] ? perf_trace_sched_switch+0x7c0/0x7c0 [ 13.533663][ T91] ? __kmalloc_noprof+0xdb/0x760 [ 13.533667][ T91] __kmalloc_noprof+0x443/0x760 [ 13.533669][ T91] ? alloc_buf.isra.0+0x4b/0x260 [ 13.533674][ T91] ? do_raw_spin_unlock+0x59/0x250 [ 13.533677][ T91] alloc_buf.isra.0+0x4b/0x260 [ 13.533680][ T91] put_chars+0x1e1/0x2f0 [ 13.533682][ T91] ? __send_to_port+0x420/0x420 [ 13.533684][ T91] ? printk_get_next_message+0x2fe/0x7d0 [ 13.533687][ T91] ? rcu_read_lock_any_held+0x3c/0x90 [ 13.533690][ T91] ? validate_chain+0x38b/0xc20 [ 13.533694][ T91] hvc_console_print+0x292/0x780 [ 13.533697][ T91] ? __lock_acquire+0x518/0xc20 [ 13.533698][ T91] ? __lock_acquire+0x518/0xc20 [ 13.533702][ T91] ? hvc_write+0x3a0/0x3a0 [ 13.533705][ T91] ? rcu_is_watching+0x16/0xd0 [ 13.533708][ T91] ? lock_acquire+0x13c/0x160 [ 13.533711][ T91] console_emit_next_record+0x252/0x4f0 [ 13.533715][ T91] ? devkmsg_read+0x4e0/0x4e0 [ 13.533719][ T91] ? rcu_is_watching+0x16/0xd0 [ 13.533721][ T91] ? lock_acquire+0x13c/0x160 [ 13.533724][ T91] console_flush_one_record+0x46f/0x710 [ 13.533728][ T91] ? console_emit_next_record+0x4f0/0x4f0 [ 13.533730][ T91] ? __lock_acquire+0x518/0xc20 [ 13.533734][ T91] console_unlock+0xee/0x1f0 [ 13.533737][ T91] ? console_flush_one_record+0x710/0x710 [ 13.533738][ T91] ? rcu_is_watching+0x16/0xd0 [ 13.533740][ T91] ? lock_acquire+0x60/0x160 [ 13.533743][ T91] ? __down_trylock_console_sem+0x5e/0xa0 [ 13.533745][ T91] ? vprintk_emit+0x320/0x3e0 [ 13.533748][ T91] vprintk_emit+0x37c/0x3e0 [ 13.533751][ T91] ? wake_up_klogd_work_func+0x90/0x90 [ 13.533754][ T91] ? __lock_acquire+0x518/0xc20 [ 13.533758][ T91] _printk+0xc7/0x100 [ 13.533761][ T91] ? snapshot_read.cold+0x21/0x21 [ 13.533764][ T91] ? do_raw_spin_lock+0x131/0x280 [ 13.533766][ T91] ? __rwlock_init+0x150/0x150 [ 13.533770][ T91] ? do_raw_spin_lock+0x131/0x280 [ 13.533772][ T91] do_exit.cold+0x82/0x9c [ 13.533775][ T91] ? exit_notify+0x890/0x890 [ 13.533777][ T91] ? __lock_release.isra.0+0x69/0x1a0 [ 13.533780][ T91] ? rcu_is_watching+0x16/0xd0 [ 13.533783][ T91] do_group_exit+0xb8/0x370 [ 13.533787][ T91] __x64_sys_exit_group+0x3c/0x50 [ 13.533789][ T91] x64_sys_call+0x1567/0x1570 [ 13.533791][ T91] do_syscall_64+0xff/0x530 [ 13.533794][ T91] ? exc_page_fault+0xee/0x100 [ 13.533798][ T91] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 13.533800][ T91] RIP: 0033:0x7fa864e981b8 [ 13.533802][ T91] Code: Unable to access opcode bytes at 0x7fa864e9818e. [ 13.533803][ T91] RSP: 002b:00007ffe86a606d8 EFLAGS: 00000256 ORIG_RAX: 00000000000000e7 [ 13.533805][ T91] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fa864e981b8 [ 13.533807][ T91] RDX: 0000000000000000 RSI: fffffffffffffe90 RDI: 0000000000000000 [ 13.533808][ T91] RBP: 00007ffe86a60860 R08: 0000562cab9c0528 R09: 0000000000000000 [ 13.533808][ T91] R10: 0000000000000000 R11: 0000000000000256 R12: 0000000000000000 [ 13.533809][ T91] R13: 00007fa8646f6050 R14: 00007fa8653c9d9e R15: 0000562cab861c40 [ 13.533816][ T91]