[ 16.646602][ T181] (udev-worker) (181) used greatest stack depth: 22696 bytes left [ 16.646623][ T181] BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:322 [ 16.646625][ T181] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 181, name: (udev-worker) [ 16.646627][ T181] preempt_count: 2, expected: 0 [ 16.646627][ T181] RCU nest depth: 0, expected: 0 [ 16.646628][ T181] locks held by (udev-worker)/181: 5, last CPU#1: [ 16.646630][ T181] #0: ffffffffa74027b8 (low_water_lock){+.+.}-{3:3}, at: do_exit+0x887/0xdc0 [ 16.646642][ T181] #1: ffffffffa7599cc0 (console_lock){+.+.}-{0:0}, at: vprintk_emit+0x320/0x3e0 [ 16.646647][ T181] #2: ffffffffa7599d38 (console_srcu){....}-{0:0}, at: console_flush_one_record+0x106/0x710 [ 16.646652][ T181] #3: ffffffffa7489660 (console_owner){....}-{0:0}, at: console_lock_spinning_enable+0x40/0x60 [ 16.646656][ T181] #4: ffffffffa7489560 (printk_legacy_map-wait-type-override){....}-{3:3}, at: console_emit_next_record+0x202/0x4f0 [ 16.646660][ T181] irq event stamp: 145510 [ 16.646661][ T181] hardirqs last enabled at (145509): [] __down_trylock_console_sem+0x86/0xa0 [ 16.646665][ T181] hardirqs last disabled at (145510): [] console_emit_next_record+0x3f8/0x4f0 [ 16.646667][ T181] softirqs last enabled at (145446): [] netlink_release+0x17b/0xcf0 [ 16.646671][ T181] softirqs last disabled at (145444): [] netlink_release+0xd2/0xcf0 [ 16.646674][ T181] Preemption disabled at: [ 16.646674][ T181] [<0000000000000000>] 0x0 [ 16.646682][ T181] CPU: 1 UID: 0 PID: 181 Comm: (udev-worker) Tainted: G W 7.2.0-virtme #1 PREEMPT(full) [ 16.646685][ T181] Tainted: [W]=WARN [ 16.646686][ T181] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 16.646688][ T181] Call Trace: [ 16.646689][ T181] [ 16.646691][ T181] dump_stack_lvl+0x6f/0xa0 [ 16.646697][ T181] __might_resched.cold+0x1fe/0x2c1 [ 16.646702][ T181] ? perf_trace_sched_switch+0x7c0/0x7c0 [ 16.646707][ T181] ? __kmalloc_noprof+0xdb/0x760 [ 16.646712][ T181] __kmalloc_noprof+0x443/0x760 [ 16.646715][ T181] ? alloc_buf.isra.0+0x4b/0x260 [ 16.646721][ T181] ? do_raw_spin_unlock+0x59/0x250 [ 16.646724][ T181] alloc_buf.isra.0+0x4b/0x260 [ 16.646728][ T181] put_chars+0x1e1/0x2f0 [ 16.646731][ T181] ? __send_to_port+0x420/0x420 [ 16.646733][ T181] ? printk_get_next_message+0x2fe/0x7d0 [ 16.646736][ T181] ? rcu_read_lock_any_held+0x3c/0x90 [ 16.646740][ T181] ? validate_chain+0x38b/0xc20 [ 16.646744][ T181] hvc_console_print+0x292/0x780 [ 16.646748][ T181] ? __lock_acquire+0x518/0xc20 [ 16.646750][ T181] ? __lock_acquire+0x518/0xc20 [ 16.646754][ T181] ? hvc_write+0x3a0/0x3a0 [ 16.646758][ T181] ? rcu_is_watching+0x16/0xd0 [ 16.646760][ T181] ? lock_acquire+0x13c/0x160 [ 16.646764][ T181] console_emit_next_record+0x252/0x4f0 [ 16.646768][ T181] ? devkmsg_read+0x4e0/0x4e0 [ 16.646773][ T181] ? rcu_is_watching+0x16/0xd0 [ 16.646774][ T181] ? lock_acquire+0x13c/0x160 [ 16.646778][ T181] console_flush_one_record+0x46f/0x710 [ 16.646783][ T181] ? console_emit_next_record+0x4f0/0x4f0 [ 16.646785][ T181] ? __lock_acquire+0x518/0xc20 [ 16.646790][ T181] console_unlock+0xee/0x1f0 [ 16.646793][ T181] ? console_flush_one_record+0x710/0x710 [ 16.646795][ T181] ? rcu_is_watching+0x16/0xd0 [ 16.646797][ T181] ? lock_acquire+0x60/0x160 [ 16.646801][ T181] ? __down_trylock_console_sem+0x5e/0xa0 [ 16.646803][ T181] ? vprintk_emit+0x320/0x3e0 [ 16.646805][ T181] vprintk_emit+0x37c/0x3e0 [ 16.646809][ T181] ? wake_up_klogd_work_func+0x90/0x90 [ 16.646812][ T181] ? __lock_acquire+0x518/0xc20 [ 16.646815][ T181] _printk+0xc7/0x100 [ 16.646819][ T181] ? snapshot_read.cold+0x21/0x21 [ 16.646822][ T181] ? do_raw_spin_lock+0x131/0x280 [ 16.646824][ T181] ? __rwlock_init+0x150/0x150 [ 16.646828][ T181] ? do_raw_spin_lock+0x131/0x280 [ 16.646831][ T181] do_exit.cold+0x82/0x9c [ 16.646835][ T181] ? exit_notify+0x890/0x890 [ 16.646837][ T181] ? __lock_release.isra.0+0x69/0x1a0 [ 16.646839][ T181] ? rcu_is_watching+0x16/0xd0 [ 16.646843][ T181] do_group_exit+0xb8/0x370 [ 16.646846][ T181] __x64_sys_exit_group+0x3c/0x50 [ 16.646848][ T181] x64_sys_call+0x1567/0x1570 [ 16.646850][ T181] do_syscall_64+0xff/0x530 [ 16.646854][ T181] ? exc_page_fault+0xee/0x100 [ 16.646857][ T181] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 16.646860][ T181] RIP: 0033:0x7f264f4601b8 [ 16.646862][ T181] Code: Unable to access opcode bytes at 0x7f264f46018e. [ 16.646863][ T181] RSP: 002b:00007ffc9264d178 EFLAGS: 00000256 ORIG_RAX: 00000000000000e7 [ 16.646865][ T181] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f264f4601b8 [ 16.646867][ T181] RDX: 0000000000000000 RSI: fffffffffffffe90 RDI: 0000000000000000 [ 16.646868][ T181] RBP: 00007ffc9264d300 R08: 000055c66765bda8 R09: 0000000000000000 [ 16.646869][ T181] R10: 0000000000000000 R11: 0000000000000256 R12: 0000000000000000 [ 16.646870][ T181] R13: 00007f264ecbe050 R14: 00007f264f991d9e R15: 000055c6674ed850 [ 16.646876][ T181]