[ 12.560433][ T86] (udev-worker) (86) used greatest stack depth: 22696 bytes left [ 12.560452][ T86] BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:322 [ 12.560454][ T86] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 86, name: (udev-worker) [ 12.560456][ T86] preempt_count: 2, expected: 0 [ 12.560457][ T86] RCU nest depth: 0, expected: 0 [ 12.560458][ T86] locks held by (udev-worker)/86: 5, last CPU#2: [ 12.560460][ T86] #0: ffffffff9ce027b8 (low_water_lock){+.+.}-{3:3}, at: do_exit+0x887/0xdc0 [ 12.560473][ T86] #1: ffffffff9cf99dc0 (console_lock){+.+.}-{0:0}, at: vprintk_emit+0x320/0x3e0 [ 12.560479][ T86] #2: ffffffff9cf99e38 (console_srcu){....}-{0:0}, at: console_flush_one_record+0x106/0x710 [ 12.560483][ T86] #3: ffffffff9ce89760 (console_owner){....}-{0:0}, at: console_lock_spinning_enable+0x40/0x60 [ 12.560487][ T86] #4: ffffffff9ce89660 (printk_legacy_map-wait-type-override){....}-{3:3}, at: console_emit_next_record+0x202/0x4f0 [ 12.560491][ T86] irq event stamp: 387680 [ 12.560492][ T86] hardirqs last enabled at (387679): [] __down_trylock_console_sem+0x86/0xa0 [ 12.560494][ T86] hardirqs last disabled at (387680): [] console_emit_next_record+0x3f8/0x4f0 [ 12.560496][ T86] softirqs last enabled at (387616): [] netlink_release+0x17b/0xcf0 [ 12.560501][ T86] softirqs last disabled at (387614): [] netlink_release+0xd2/0xcf0 [ 12.560504][ T86] Preemption disabled at: [ 12.560504][ T86] [<0000000000000000>] 0x0 [ 12.560511][ T86] CPU: 2 UID: 0 PID: 86 Comm: (udev-worker) Tainted: G W 7.2.0-virtme #1 PREEMPT(full) [ 12.560515][ T86] Tainted: [W]=WARN [ 12.560516][ T86] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 12.560518][ T86] Call Trace: [ 12.560519][ T86] [ 12.560521][ T86] dump_stack_lvl+0x6f/0xa0 [ 12.560527][ T86] __might_resched.cold+0x1fe/0x2c1 [ 12.560532][ T86] ? perf_trace_sched_switch+0x7c0/0x7c0 [ 12.560536][ T86] ? __kmalloc_noprof+0xdb/0x760 [ 12.560541][ T86] __kmalloc_noprof+0x443/0x760 [ 12.560544][ T86] ? alloc_buf.isra.0+0x4b/0x260 [ 12.560550][ T86] ? do_raw_spin_unlock+0x59/0x250 [ 12.560553][ T86] alloc_buf.isra.0+0x4b/0x260 [ 12.560556][ T86] put_chars+0x1e1/0x2f0 [ 12.560560][ T86] ? __send_to_port+0x420/0x420 [ 12.560562][ T86] ? printk_get_next_message+0x2fe/0x7d0 [ 12.560565][ T86] ? rcu_read_lock_any_held+0x3c/0x90 [ 12.560568][ T86] ? validate_chain+0x38b/0xc20 [ 12.560572][ T86] hvc_console_print+0x292/0x780 [ 12.560576][ T86] ? __lock_acquire+0x518/0xc20 [ 12.560578][ T86] ? __lock_acquire+0x518/0xc20 [ 12.560582][ T86] ? hvc_write+0x3a0/0x3a0 [ 12.560586][ T86] ? rcu_is_watching+0x16/0xd0 [ 12.560590][ T86] ? lock_acquire+0x13c/0x160 [ 12.560593][ T86] console_emit_next_record+0x252/0x4f0 [ 12.560597][ T86] ? devkmsg_read+0x4e0/0x4e0 [ 12.560602][ T86] ? rcu_is_watching+0x16/0xd0 [ 12.560604][ T86] ? lock_acquire+0x13c/0x160 [ 12.560608][ T86] console_flush_one_record+0x46f/0x710 [ 12.560612][ T86] ? console_emit_next_record+0x4f0/0x4f0 [ 12.560614][ T86] ? __lock_acquire+0x518/0xc20 [ 12.560619][ T86] console_unlock+0xee/0x1f0 [ 12.560622][ T86] ? console_flush_one_record+0x710/0x710 [ 12.560624][ T86] ? rcu_is_watching+0x16/0xd0 [ 12.560626][ T86] ? lock_acquire+0xa0/0x160 [ 12.560630][ T86] ? __down_trylock_console_sem+0x5e/0xa0 [ 12.560631][ T86] ? vprintk_emit+0x320/0x3e0 [ 12.560635][ T86] vprintk_emit+0x37c/0x3e0 [ 12.560639][ T86] ? wake_up_klogd_work_func+0x90/0x90 [ 12.560642][ T86] ? __lock_acquire+0x518/0xc20 [ 12.560646][ T86] _printk+0xc7/0x100 [ 12.560650][ T86] ? snapshot_read.cold+0x21/0x21 [ 12.560652][ T86] ? do_raw_spin_lock+0x131/0x280 [ 12.560655][ T86] ? __rwlock_init+0x150/0x150 [ 12.560659][ T86] ? do_raw_spin_lock+0x131/0x280 [ 12.560661][ T86] do_exit.cold+0x82/0x9c [ 12.560665][ T86] ? exit_notify+0x890/0x890 [ 12.560667][ T86] ? __lock_release.isra.0+0x69/0x1a0 [ 12.560669][ T86] ? rcu_is_watching+0x16/0xd0 [ 12.560674][ T86] do_group_exit+0xb8/0x370 [ 12.560676][ T86] __x64_sys_exit_group+0x3c/0x50 [ 12.560678][ T86] x64_sys_call+0x1567/0x1570 [ 12.560680][ T86] do_syscall_64+0xff/0x530 [ 12.560684][ T86] ? irq_exit_rcu+0x1a/0x30 [ 12.560687][ T86] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 12.560689][ T86] RIP: 0033:0x7f002b1b81b8 [ 12.560691][ T86] Code: Unable to access opcode bytes at 0x7f002b1b818e. [ 12.560692][ T86] RSP: 002b:00007ffdb7e44c98 EFLAGS: 00000256 ORIG_RAX: 00000000000000e7 [ 12.560695][ T86] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f002b1b81b8 [ 12.560697][ T86] RDX: 0000000000000000 RSI: fffffffffffffe90 RDI: 0000000000000000 [ 12.560698][ T86] RBP: 00007ffdb7e44e20 R08: 000055fb675e13e8 R09: 0000000000000000 [ 12.560698][ T86] R10: 0000000000000000 R11: 0000000000000256 R12: 0000000000000000 [ 12.560699][ T86] R13: 00007f002aa16050 R14: 00007f002b6e9d9e R15: 000055fb6747d350 [ 12.560706][ T86]