[ 13.487753][ T82] (udev-worker) (82) used greatest stack depth: 22696 bytes left [ 13.487773][ T82] BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:322 [ 13.487775][ T82] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 82, name: (udev-worker) [ 13.487776][ T82] preempt_count: 2, expected: 0 [ 13.487777][ T82] RCU nest depth: 0, expected: 0 [ 13.487778][ T82] locks held by (udev-worker)/82: 5, last CPU#0: [ 13.487780][ T82] #0: ffffffff9c2027b8 (low_water_lock){+.+.}-{3:3}, at: do_exit+0x887/0xdc0 [ 13.487793][ T82] #1: ffffffff9c399cc0 (console_lock){+.+.}-{0:0}, at: vprintk_emit+0x320/0x3e0 [ 13.487798][ T82] #2: ffffffff9c399d38 (console_srcu){....}-{0:0}, at: console_flush_one_record+0x106/0x710 [ 13.487802][ T82] #3: ffffffff9c289660 (console_owner){....}-{0:0}, at: console_lock_spinning_enable+0x40/0x60 [ 13.487806][ T82] #4: ffffffff9c289560 (printk_legacy_map-wait-type-override){....}-{3:3}, at: console_emit_next_record+0x202/0x4f0 [ 13.487810][ T82] irq event stamp: 491128 [ 13.487811][ T82] hardirqs last enabled at (491127): [] __down_trylock_console_sem+0x86/0xa0 [ 13.487813][ T82] hardirqs last disabled at (491128): [] console_emit_next_record+0x3f8/0x4f0 [ 13.487815][ T82] softirqs last enabled at (491064): [] netlink_release+0x17b/0xcf0 [ 13.487819][ T82] softirqs last disabled at (491062): [] netlink_release+0xd2/0xcf0 [ 13.487821][ T82] Preemption disabled at: [ 13.487822][ T82] [<0000000000000000>] 0x0 [ 13.487829][ T82] CPU: 0 UID: 0 PID: 82 Comm: (udev-worker) Tainted: G W 7.2.0-virtme #1 PREEMPT(full) [ 13.487833][ T82] Tainted: [W]=WARN [ 13.487833][ T82] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 13.487835][ T82] Call Trace: [ 13.487836][ T82] [ 13.487838][ T82] dump_stack_lvl+0x6f/0xa0 [ 13.487844][ T82] __might_resched.cold+0x1fe/0x2c1 [ 13.487848][ T82] ? perf_trace_sched_switch+0x7c0/0x7c0 [ 13.487852][ T82] ? __kmalloc_noprof+0xdb/0x760 [ 13.487857][ T82] __kmalloc_noprof+0x443/0x760 [ 13.487858][ T82] ? alloc_buf.isra.0+0x4b/0x260 [ 13.487864][ T82] ? do_raw_spin_unlock+0x59/0x250 [ 13.487866][ T82] alloc_buf.isra.0+0x4b/0x260 [ 13.487869][ T82] put_chars+0x1e1/0x2f0 [ 13.487872][ T82] ? __send_to_port+0x420/0x420 [ 13.487874][ T82] ? printk_get_next_message+0x2fe/0x7d0 [ 13.487877][ T82] ? rcu_read_lock_any_held+0x3c/0x90 [ 13.487880][ T82] ? validate_chain+0x38b/0xc20 [ 13.487884][ T82] hvc_console_print+0x292/0x780 [ 13.487886][ T82] ? __lock_acquire+0x518/0xc20 [ 13.487888][ T82] ? __lock_acquire+0x518/0xc20 [ 13.487892][ T82] ? hvc_write+0x3a0/0x3a0 [ 13.487895][ T82] ? rcu_is_watching+0x16/0xd0 [ 13.487898][ T82] ? lock_acquire+0x13c/0x160 [ 13.487901][ T82] console_emit_next_record+0x252/0x4f0 [ 13.487905][ T82] ? devkmsg_read+0x4e0/0x4e0 [ 13.487909][ T82] ? rcu_is_watching+0x16/0xd0 [ 13.487911][ T82] ? lock_acquire+0x13c/0x160 [ 13.487914][ T82] console_flush_one_record+0x46f/0x710 [ 13.487918][ T82] ? console_emit_next_record+0x4f0/0x4f0 [ 13.487920][ T82] ? __lock_acquire+0x518/0xc20 [ 13.487924][ T82] console_unlock+0xee/0x1f0 [ 13.487927][ T82] ? console_flush_one_record+0x710/0x710 [ 13.487928][ T82] ? rcu_is_watching+0x16/0xd0 [ 13.487930][ T82] ? lock_acquire+0x60/0x160 [ 13.487934][ T82] ? __down_trylock_console_sem+0x5e/0xa0 [ 13.487935][ T82] ? vprintk_emit+0x320/0x3e0 [ 13.487938][ T82] vprintk_emit+0x37c/0x3e0 [ 13.487941][ T82] ? wake_up_klogd_work_func+0x90/0x90 [ 13.487944][ T82] ? __lock_acquire+0x518/0xc20 [ 13.487948][ T82] _printk+0xc7/0x100 [ 13.487951][ T82] ? snapshot_read.cold+0x21/0x21 [ 13.487954][ T82] ? do_raw_spin_lock+0x131/0x280 [ 13.487956][ T82] ? __rwlock_init+0x150/0x150 [ 13.487960][ T82] ? do_raw_spin_lock+0x131/0x280 [ 13.487962][ T82] do_exit.cold+0x82/0x9c [ 13.487966][ T82] ? exit_notify+0x890/0x890 [ 13.487968][ T82] ? __lock_release.isra.0+0x69/0x1a0 [ 13.487970][ T82] ? rcu_is_watching+0x16/0xd0 [ 13.487974][ T82] do_group_exit+0xb8/0x370 [ 13.487977][ T82] __x64_sys_exit_group+0x3c/0x50 [ 13.487980][ T82] x64_sys_call+0x1567/0x1570 [ 13.487982][ T82] do_syscall_64+0xff/0x530 [ 13.487985][ T82] ? exc_page_fault+0xee/0x100 [ 13.487988][ T82] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 13.487990][ T82] RIP: 0033:0x7f1283e841b8 [ 13.487992][ T82] Code: Unable to access opcode bytes at 0x7f1283e8418e. [ 13.487994][ T82] RSP: 002b:00007ffe8bf50f58 EFLAGS: 00000256 ORIG_RAX: 00000000000000e7 [ 13.487996][ T82] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f1283e841b8 [ 13.487997][ T82] RDX: 0000000000000000 RSI: fffffffffffffe90 RDI: 0000000000000000 [ 13.487998][ T82] RBP: 00007ffe8bf510e0 R08: 0000556efbf4cf48 R09: 0000000000000000 [ 13.487999][ T82] R10: 0000000000000000 R11: 0000000000000256 R12: 0000000000000000 [ 13.488000][ T82] R13: 00007f12836e2050 R14: 00007f12843b5d9e R15: 0000556efc0906c0 [ 13.488006][ T82]