[ 11.478562][ T89] (udev-worker) (89) used greatest stack depth: 22696 bytes left [ 11.478578][ T89] BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:322 [ 11.478581][ T89] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 89, name: (udev-worker) [ 11.478583][ T89] preempt_count: 2, expected: 0 [ 11.478584][ T89] RCU nest depth: 0, expected: 0 [ 11.478585][ T89] locks held by (udev-worker)/89: 5, last CPU#2: [ 11.478586][ T89] #0: ffffffff9d0027b8 (low_water_lock){+.+.}-{3:3}, at: do_exit+0x887/0xdc0 [ 11.478598][ T89] #1: ffffffff9d199dc0 (console_lock){+.+.}-{0:0}, at: vprintk_emit+0x320/0x3e0 [ 11.478604][ T89] #2: ffffffff9d199e38 (console_srcu){....}-{0:0}, at: console_flush_one_record+0x106/0x710 [ 11.478608][ T89] #3: ffffffff9d089760 (console_owner){....}-{0:0}, at: console_lock_spinning_enable+0x40/0x60 [ 11.478612][ T89] #4: ffffffff9d089660 (printk_legacy_map-wait-type-override){....}-{3:3}, at: console_emit_next_record+0x202/0x4f0 [ 11.478616][ T89] irq event stamp: 382400 [ 11.478617][ T89] hardirqs last enabled at (382399): [] __down_trylock_console_sem+0x86/0xa0 [ 11.478620][ T89] hardirqs last disabled at (382400): [] console_emit_next_record+0x3f8/0x4f0 [ 11.478622][ T89] softirqs last enabled at (382336): [] netlink_release+0x17b/0xcf0 [ 11.478626][ T89] softirqs last disabled at (382334): [] netlink_release+0xd2/0xcf0 [ 11.478629][ T89] Preemption disabled at: [ 11.478629][ T89] [<0000000000000000>] 0x0 [ 11.478636][ T89] CPU: 2 UID: 0 PID: 89 Comm: (udev-worker) Tainted: G W 7.2.0-virtme #1 PREEMPT(full) [ 11.478640][ T89] Tainted: [W]=WARN [ 11.478641][ T89] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 11.478643][ T89] Call Trace: [ 11.478644][ T89] [ 11.478646][ T89] dump_stack_lvl+0x6f/0xa0 [ 11.478652][ T89] __might_resched.cold+0x1fe/0x2c1 [ 11.478657][ T89] ? perf_trace_sched_switch+0x7c0/0x7c0 [ 11.478661][ T89] ? __kmalloc_noprof+0xdb/0x760 [ 11.478666][ T89] __kmalloc_noprof+0x443/0x760 [ 11.478669][ T89] ? alloc_buf.isra.0+0x4b/0x260 [ 11.478675][ T89] ? do_raw_spin_unlock+0x59/0x250 [ 11.478678][ T89] alloc_buf.isra.0+0x4b/0x260 [ 11.478682][ T89] put_chars+0x1e1/0x2f0 [ 11.478685][ T89] ? __send_to_port+0x420/0x420 [ 11.478687][ T89] ? printk_get_next_message+0x2fe/0x7d0 [ 11.478691][ T89] ? rcu_read_lock_any_held+0x3c/0x90 [ 11.478694][ T89] ? validate_chain+0x38b/0xc20 [ 11.478699][ T89] hvc_console_print+0x292/0x780 [ 11.478703][ T89] ? __lock_acquire+0x518/0xc20 [ 11.478704][ T89] ? __lock_acquire+0x518/0xc20 [ 11.478709][ T89] ? hvc_write+0x3a0/0x3a0 [ 11.478713][ T89] ? rcu_is_watching+0x16/0xd0 [ 11.478716][ T89] ? lock_acquire+0x13c/0x160 [ 11.478721][ T89] console_emit_next_record+0x252/0x4f0 [ 11.478726][ T89] ? devkmsg_read+0x4e0/0x4e0 [ 11.478730][ T89] ? rcu_is_watching+0x16/0xd0 [ 11.478733][ T89] ? lock_acquire+0x13c/0x160 [ 11.478737][ T89] console_flush_one_record+0x46f/0x710 [ 11.478741][ T89] ? console_emit_next_record+0x4f0/0x4f0 [ 11.478743][ T89] ? __lock_acquire+0x518/0xc20 [ 11.478749][ T89] console_unlock+0xee/0x1f0 [ 11.478752][ T89] ? console_flush_one_record+0x710/0x710 [ 11.478754][ T89] ? rcu_is_watching+0x16/0xd0 [ 11.478756][ T89] ? lock_acquire+0xa0/0x160 [ 11.478760][ T89] ? __down_trylock_console_sem+0x5e/0xa0 [ 11.478762][ T89] ? vprintk_emit+0x320/0x3e0 [ 11.478766][ T89] vprintk_emit+0x37c/0x3e0 [ 11.478770][ T89] ? wake_up_klogd_work_func+0x90/0x90 [ 11.478773][ T89] ? __lock_acquire+0x518/0xc20 [ 11.478777][ T89] _printk+0xc7/0x100 [ 11.478781][ T89] ? snapshot_read.cold+0x21/0x21 [ 11.478784][ T89] ? do_raw_spin_lock+0x131/0x280 [ 11.478786][ T89] ? __rwlock_init+0x150/0x150 [ 11.478791][ T89] ? do_raw_spin_lock+0x131/0x280 [ 11.478794][ T89] do_exit.cold+0x82/0x9c [ 11.478798][ T89] ? exit_notify+0x890/0x890 [ 11.478799][ T89] ? __lock_release.isra.0+0x69/0x1a0 [ 11.478802][ T89] ? rcu_is_watching+0x16/0xd0 [ 11.478806][ T89] do_group_exit+0xb8/0x370 [ 11.478809][ T89] __x64_sys_exit_group+0x3c/0x50 [ 11.478811][ T89] x64_sys_call+0x1567/0x1570 [ 11.478813][ T89] do_syscall_64+0xff/0x530 [ 11.478817][ T89] ? irq_exit_rcu+0x1a/0x30 [ 11.478820][ T89] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 11.478822][ T89] RIP: 0033:0x7f47340c61b8 [ 11.478825][ T89] Code: Unable to access opcode bytes at 0x7f47340c618e. [ 11.478826][ T89] RSP: 002b:00007ffc72efec78 EFLAGS: 00000256 ORIG_RAX: 00000000000000e7 [ 11.478828][ T89] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f47340c61b8 [ 11.478830][ T89] RDX: 0000000000000000 RSI: fffffffffffffe90 RDI: 0000000000000000 [ 11.478831][ T89] RBP: 00007ffc72efee00 R08: 0000555ceb5dbad8 R09: 0000000000000000 [ 11.478832][ T89] R10: 0000000000000000 R11: 0000000000000256 R12: 0000000000000000 [ 11.478833][ T89] R13: 00007f4733924050 R14: 00007f47345f7d9e R15: 0000555ceb475720 [ 11.478840][ T89]