[ 57.072705][ T86] (udev-worker) (86) used greatest stack depth: 22696 bytes left [ 57.072725][ T86] BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:322 [ 57.072727][ T86] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 86, name: (udev-worker) [ 57.072729][ T86] preempt_count: 2, expected: 0 [ 57.072730][ T86] RCU nest depth: 0, expected: 0 [ 57.072731][ T86] locks held by (udev-worker)/86: 5, last CPU#0: [ 57.072733][ T86] #0: ffffffffa70027b8 (low_water_lock){+.+.}-{3:3}, at: do_exit+0x887/0xdc0 [ 57.072746][ T86] #1: ffffffffa7199cc0 (console_lock){+.+.}-{0:0}, at: vprintk_emit+0x320/0x3e0 [ 57.072752][ T86] #2: ffffffffa7199d38 (console_srcu){....}-{0:0}, at: console_flush_one_record+0x106/0x710 [ 57.072756][ T86] #3: ffffffffa7089660 (console_owner){....}-{0:0}, at: console_lock_spinning_enable+0x40/0x60 [ 57.072760][ T86] #4: ffffffffa7089560 (printk_legacy_map-wait-type-override){....}-{3:3}, at: console_emit_next_record+0x202/0x4f0 [ 57.072764][ T86] irq event stamp: 2645922 [ 57.072765][ T86] hardirqs last enabled at (2645921): [] __down_trylock_console_sem+0x86/0xa0 [ 57.072768][ T86] hardirqs last disabled at (2645922): [] console_emit_next_record+0x3f8/0x4f0 [ 57.072770][ T86] softirqs last enabled at (2645844): [] handle_softirqs+0x67c/0x900 [ 57.072773][ T86] softirqs last disabled at (2644543): [] __irq_exit_rcu+0x145/0x1c0 [ 57.072776][ T86] Preemption disabled at: [ 57.072777][ T86] [<0000000000000000>] 0x0 [ 57.072784][ T86] CPU: 0 UID: 0 PID: 86 Comm: (udev-worker) Tainted: G W 7.2.0-virtme #1 PREEMPT(full) [ 57.072788][ T86] Tainted: [W]=WARN [ 57.072789][ T86] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 57.072791][ T86] Call Trace: [ 57.072793][ T86] [ 57.072795][ T86] dump_stack_lvl+0x6f/0xa0 [ 57.072801][ T86] __might_resched.cold+0x1fe/0x2c1 [ 57.072806][ T86] ? perf_trace_sched_switch+0x7c0/0x7c0 [ 57.072810][ T86] ? __kmalloc_noprof+0xdb/0x760 [ 57.072817][ T86] __kmalloc_noprof+0x443/0x760 [ 57.072821][ T86] ? alloc_buf.isra.0+0x4b/0x260 [ 57.072827][ T86] ? do_raw_spin_unlock+0x59/0x250 [ 57.072830][ T86] alloc_buf.isra.0+0x4b/0x260 [ 57.072833][ T86] put_chars+0x1e1/0x2f0 [ 57.072836][ T86] ? __send_to_port+0x420/0x420 [ 57.072838][ T86] ? printk_get_next_message+0x2fe/0x7d0 [ 57.072841][ T86] ? rcu_read_lock_any_held+0x3c/0x90 [ 57.072844][ T86] ? validate_chain+0x38b/0xc20 [ 57.072848][ T86] hvc_console_print+0x292/0x780 [ 57.072851][ T86] ? __lock_acquire+0x518/0xc20 [ 57.072853][ T86] ? __lock_acquire+0x518/0xc20 [ 57.072857][ T86] ? hvc_write+0x3a0/0x3a0 [ 57.072861][ T86] ? rcu_is_watching+0x16/0xd0 [ 57.072864][ T86] ? lock_acquire+0x13c/0x160 [ 57.072868][ T86] console_emit_next_record+0x252/0x4f0 [ 57.072871][ T86] ? devkmsg_read+0x4e0/0x4e0 [ 57.072876][ T86] ? rcu_is_watching+0x16/0xd0 [ 57.072878][ T86] ? lock_acquire+0x13c/0x160 [ 57.072882][ T86] console_flush_one_record+0x46f/0x710 [ 57.072886][ T86] ? console_emit_next_record+0x4f0/0x4f0 [ 57.072888][ T86] ? __lock_acquire+0x518/0xc20 [ 57.072893][ T86] console_unlock+0xee/0x1f0 [ 57.072896][ T86] ? console_flush_one_record+0x710/0x710 [ 57.072897][ T86] ? rcu_is_watching+0x16/0xd0 [ 57.072899][ T86] ? lock_acquire+0x60/0x160 [ 57.072903][ T86] ? __down_trylock_console_sem+0x5e/0xa0 [ 57.072904][ T86] ? vprintk_emit+0x320/0x3e0 [ 57.072908][ T86] vprintk_emit+0x37c/0x3e0 [ 57.072911][ T86] ? wake_up_klogd_work_func+0x90/0x90 [ 57.072915][ T86] ? __lock_acquire+0x518/0xc20 [ 57.072918][ T86] _printk+0xc7/0x100 [ 57.072922][ T86] ? snapshot_read.cold+0x21/0x21 [ 57.072925][ T86] ? do_raw_spin_lock+0x131/0x280 [ 57.072927][ T86] ? __rwlock_init+0x150/0x150 [ 57.072931][ T86] ? do_raw_spin_lock+0x131/0x280 [ 57.072934][ T86] do_exit.cold+0x82/0x9c [ 57.072937][ T86] ? exit_notify+0x890/0x890 [ 57.072939][ T86] ? __lock_release.isra.0+0x69/0x1a0 [ 57.072942][ T86] ? rcu_is_watching+0x16/0xd0 [ 57.072946][ T86] do_group_exit+0xb8/0x370 [ 57.072949][ T86] __x64_sys_exit_group+0x3c/0x50 [ 57.072951][ T86] x64_sys_call+0x1567/0x1570 [ 57.072954][ T86] do_syscall_64+0xff/0x530 [ 57.072957][ T86] ? irq_exit_rcu+0x1a/0x30 [ 57.072960][ T86] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 57.072963][ T86] RIP: 0033:0x7f6141fc41b8 [ 57.072965][ T86] Code: Unable to access opcode bytes at 0x7f6141fc418e. [ 57.072967][ T86] RSP: 002b:00007ffdced5e3e8 EFLAGS: 00000256 ORIG_RAX: 00000000000000e7 [ 57.072969][ T86] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f6141fc41b8 [ 57.072971][ T86] RDX: 0000000000000000 RSI: fffffffffffffe90 RDI: 0000000000000000 [ 57.072972][ T86] RBP: 00007ffdced5e570 R08: 0000564be0b8dbc8 R09: 0000000000000000 [ 57.072973][ T86] R10: 0000000000000000 R11: 0000000000000256 R12: 0000000000000000 [ 57.072973][ T86] R13: 00007f6141822050 R14: 00007f61424f5d9e R15: 0000564be09edcd0 [ 57.072983][ T86]