[ 12.171503][ T86] (udev-worker) (86) used greatest stack depth: 22696 bytes left [ 12.171519][ T86] BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:322 [ 12.171521][ T86] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 86, name: (udev-worker) [ 12.171523][ T86] preempt_count: 2, expected: 0 [ 12.171523][ T86] RCU nest depth: 0, expected: 0 [ 12.171524][ T86] locks held by (udev-worker)/86: 5, last CPU#0: [ 12.171526][ T86] #0: ffffffffac4027b8 (low_water_lock){+.+.}-{3:3}, at: do_exit+0x887/0xdc0 [ 12.171538][ T86] #1: ffffffffac599dc0 (console_lock){+.+.}-{0:0}, at: vprintk_emit+0x320/0x3e0 [ 12.171544][ T86] #2: ffffffffac599e38 (console_srcu){....}-{0:0}, at: console_flush_one_record+0x106/0x710 [ 12.171548][ T86] #3: ffffffffac489760 (console_owner){....}-{0:0}, at: console_lock_spinning_enable+0x40/0x60 [ 12.171552][ T86] #4: ffffffffac489660 (printk_legacy_map-wait-type-override){....}-{3:3}, at: console_emit_next_record+0x202/0x4f0 [ 12.171555][ T86] irq event stamp: 387786 [ 12.171556][ T86] hardirqs last enabled at (387785): [] __down_trylock_console_sem+0x86/0xa0 [ 12.171559][ T86] hardirqs last disabled at (387786): [] console_emit_next_record+0x3f8/0x4f0 [ 12.171561][ T86] softirqs last enabled at (387720): [] netlink_release+0x17b/0xcf0 [ 12.171565][ T86] softirqs last disabled at (387718): [] netlink_release+0xd2/0xcf0 [ 12.171567][ T86] Preemption disabled at: [ 12.171568][ T86] [<0000000000000000>] 0x0 [ 12.171574][ T86] CPU: 0 UID: 0 PID: 86 Comm: (udev-worker) Tainted: G W 7.2.0-virtme #1 PREEMPT(full) [ 12.171578][ T86] Tainted: [W]=WARN [ 12.171579][ T86] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 12.171580][ T86] Call Trace: [ 12.171582][ T86] [ 12.171583][ T86] dump_stack_lvl+0x6f/0xa0 [ 12.171590][ T86] __might_resched.cold+0x1fe/0x2c1 [ 12.171594][ T86] ? perf_trace_sched_switch+0x7c0/0x7c0 [ 12.171598][ T86] ? __kmalloc_noprof+0xdb/0x760 [ 12.171603][ T86] __kmalloc_noprof+0x443/0x760 [ 12.171606][ T86] ? alloc_buf.isra.0+0x4b/0x260 [ 12.171612][ T86] ? do_raw_spin_unlock+0x59/0x250 [ 12.171614][ T86] alloc_buf.isra.0+0x4b/0x260 [ 12.171618][ T86] put_chars+0x1e1/0x2f0 [ 12.171621][ T86] ? __send_to_port+0x420/0x420 [ 12.171623][ T86] ? printk_get_next_message+0x2fe/0x7d0 [ 12.171626][ T86] ? rcu_read_lock_any_held+0x3c/0x90 [ 12.171629][ T86] ? validate_chain+0x38b/0xc20 [ 12.171633][ T86] hvc_console_print+0x292/0x780 [ 12.171637][ T86] ? __lock_acquire+0x518/0xc20 [ 12.171640][ T86] ? __lock_acquire+0x518/0xc20 [ 12.171645][ T86] ? hvc_write+0x3a0/0x3a0 [ 12.171648][ T86] ? rcu_is_watching+0x16/0xd0 [ 12.171651][ T86] ? lock_acquire+0x13c/0x160 [ 12.171655][ T86] console_emit_next_record+0x252/0x4f0 [ 12.171659][ T86] ? devkmsg_read+0x4e0/0x4e0 [ 12.171663][ T86] ? rcu_is_watching+0x16/0xd0 [ 12.171665][ T86] ? lock_acquire+0x13c/0x160 [ 12.171669][ T86] console_flush_one_record+0x46f/0x710 [ 12.171673][ T86] ? console_emit_next_record+0x4f0/0x4f0 [ 12.171675][ T86] ? __lock_acquire+0x518/0xc20 [ 12.171680][ T86] console_unlock+0xee/0x1f0 [ 12.171682][ T86] ? console_flush_one_record+0x710/0x710 [ 12.171684][ T86] ? rcu_is_watching+0x16/0xd0 [ 12.171686][ T86] ? lock_acquire+0xa0/0x160 [ 12.171690][ T86] ? __down_trylock_console_sem+0x5e/0xa0 [ 12.171691][ T86] ? vprintk_emit+0x320/0x3e0 [ 12.171694][ T86] vprintk_emit+0x37c/0x3e0 [ 12.171698][ T86] ? wake_up_klogd_work_func+0x90/0x90 [ 12.171701][ T86] ? __lock_acquire+0x518/0xc20 [ 12.171705][ T86] _printk+0xc7/0x100 [ 12.171708][ T86] ? snapshot_read.cold+0x21/0x21 [ 12.171711][ T86] ? do_raw_spin_lock+0x131/0x280 [ 12.171713][ T86] ? __rwlock_init+0x150/0x150 [ 12.171717][ T86] ? do_raw_spin_lock+0x131/0x280 [ 12.171719][ T86] do_exit.cold+0x82/0x9c [ 12.171723][ T86] ? exit_notify+0x890/0x890 [ 12.171724][ T86] ? __lock_release.isra.0+0x69/0x1a0 [ 12.171727][ T86] ? rcu_is_watching+0x16/0xd0 [ 12.171731][ T86] do_group_exit+0xb8/0x370 [ 12.171733][ T86] __x64_sys_exit_group+0x3c/0x50 [ 12.171735][ T86] x64_sys_call+0x1567/0x1570 [ 12.171737][ T86] do_syscall_64+0xff/0x530 [ 12.171740][ T86] ? exc_page_fault+0xee/0x100 [ 12.171744][ T86] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 12.171746][ T86] RIP: 0033:0x7f88019881b8 [ 12.171748][ T86] Code: Unable to access opcode bytes at 0x7f880198818e. [ 12.171749][ T86] RSP: 002b:00007fffdcdc3608 EFLAGS: 00000256 ORIG_RAX: 00000000000000e7 [ 12.171752][ T86] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f88019881b8 [ 12.171753][ T86] RDX: 0000000000000000 RSI: fffffffffffffe90 RDI: 0000000000000000 [ 12.171754][ T86] RBP: 00007fffdcdc3790 R08: 000055afb2773048 R09: 0000000000000000 [ 12.171755][ T86] R10: 0000000000000000 R11: 0000000000000256 R12: 0000000000000000 [ 12.171756][ T86] R13: 00007f88011e6050 R14: 00007f8801eb9d9e R15: 000055afb2619290 [ 12.171762][ T86]