[ 13.229948][ T86] (udev-worker) (86) used greatest stack depth: 22696 bytes left [ 13.229969][ T86] BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:322 [ 13.229971][ T86] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 86, name: (udev-worker) [ 13.229973][ T86] preempt_count: 2, expected: 0 [ 13.229974][ T86] RCU nest depth: 0, expected: 0 [ 13.229975][ T86] locks held by (udev-worker)/86: 5, last CPU#0: [ 13.229977][ T86] #0: ffffffffaec027b8 (low_water_lock){+.+.}-{3:3}, at: do_exit+0x887/0xdc0 [ 13.229990][ T86] #1: ffffffffaed99cc0 (console_lock){+.+.}-{0:0}, at: vprintk_emit+0x320/0x3e0 [ 13.229995][ T86] #2: ffffffffaed99d38 (console_srcu){....}-{0:0}, at: console_flush_one_record+0x106/0x710 [ 13.229999][ T86] #3: ffffffffaec89660 (console_owner){....}-{0:0}, at: console_lock_spinning_enable+0x40/0x60 [ 13.230002][ T86] #4: ffffffffaec89560 (printk_legacy_map-wait-type-override){....}-{3:3}, at: console_emit_next_record+0x202/0x4f0 [ 13.230006][ T86] irq event stamp: 460356 [ 13.230007][ T86] hardirqs last enabled at (460355): [] __down_trylock_console_sem+0x86/0xa0 [ 13.230009][ T86] hardirqs last disabled at (460356): [] console_emit_next_record+0x3f8/0x4f0 [ 13.230011][ T86] softirqs last enabled at (460292): [] netlink_release+0x17b/0xcf0 [ 13.230016][ T86] softirqs last disabled at (460290): [] netlink_release+0xd2/0xcf0 [ 13.230018][ T86] Preemption disabled at: [ 13.230019][ T86] [<0000000000000000>] 0x0 [ 13.230026][ T86] CPU: 0 UID: 0 PID: 86 Comm: (udev-worker) Tainted: G W 7.2.0-virtme #1 PREEMPT(full) [ 13.230030][ T86] Tainted: [W]=WARN [ 13.230031][ T86] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 13.230032][ T86] Call Trace: [ 13.230034][ T86] [ 13.230036][ T86] dump_stack_lvl+0x6f/0xa0 [ 13.230042][ T86] __might_resched.cold+0x1fe/0x2c1 [ 13.230047][ T86] ? perf_trace_sched_switch+0x7c0/0x7c0 [ 13.230051][ T86] ? __kmalloc_noprof+0xdb/0x760 [ 13.230056][ T86] __kmalloc_noprof+0x443/0x760 [ 13.230058][ T86] ? alloc_buf.isra.0+0x4b/0x260 [ 13.230064][ T86] ? do_raw_spin_unlock+0x59/0x250 [ 13.230066][ T86] alloc_buf.isra.0+0x4b/0x260 [ 13.230069][ T86] put_chars+0x1e1/0x2f0 [ 13.230072][ T86] ? __send_to_port+0x420/0x420 [ 13.230074][ T86] ? printk_get_next_message+0x2fe/0x7d0 [ 13.230077][ T86] ? rcu_read_lock_any_held+0x3c/0x90 [ 13.230080][ T86] ? validate_chain+0x38b/0xc20 [ 13.230084][ T86] hvc_console_print+0x292/0x780 [ 13.230087][ T86] ? __lock_acquire+0x518/0xc20 [ 13.230088][ T86] ? __lock_acquire+0x518/0xc20 [ 13.230093][ T86] ? hvc_write+0x3a0/0x3a0 [ 13.230096][ T86] ? rcu_is_watching+0x16/0xd0 [ 13.230099][ T86] ? lock_acquire+0x13c/0x160 [ 13.230102][ T86] console_emit_next_record+0x252/0x4f0 [ 13.230106][ T86] ? devkmsg_read+0x4e0/0x4e0 [ 13.230115][ T86] ? rcu_is_watching+0x16/0xd0 [ 13.230117][ T86] ? lock_acquire+0x13c/0x160 [ 13.230121][ T86] console_flush_one_record+0x46f/0x710 [ 13.230125][ T86] ? console_emit_next_record+0x4f0/0x4f0 [ 13.230127][ T86] ? __lock_acquire+0x518/0xc20 [ 13.230132][ T86] console_unlock+0xee/0x1f0 [ 13.230135][ T86] ? console_flush_one_record+0x710/0x710 [ 13.230137][ T86] ? rcu_is_watching+0x16/0xd0 [ 13.230139][ T86] ? lock_acquire+0x60/0x160 [ 13.230142][ T86] ? __down_trylock_console_sem+0x5e/0xa0 [ 13.230143][ T86] ? vprintk_emit+0x320/0x3e0 [ 13.230147][ T86] vprintk_emit+0x37c/0x3e0 [ 13.230150][ T86] ? wake_up_klogd_work_func+0x90/0x90 [ 13.230153][ T86] ? __lock_acquire+0x518/0xc20 [ 13.230157][ T86] _printk+0xc7/0x100 [ 13.230161][ T86] ? snapshot_read.cold+0x21/0x21 [ 13.230163][ T86] ? do_raw_spin_lock+0x131/0x280 [ 13.230166][ T86] ? __rwlock_init+0x150/0x150 [ 13.230169][ T86] ? do_raw_spin_lock+0x131/0x280 [ 13.230172][ T86] do_exit.cold+0x82/0x9c [ 13.230176][ T86] ? exit_notify+0x890/0x890 [ 13.230177][ T86] ? __lock_release.isra.0+0x69/0x1a0 [ 13.230180][ T86] ? rcu_is_watching+0x16/0xd0 [ 13.230184][ T86] do_group_exit+0xb8/0x370 [ 13.230187][ T86] __x64_sys_exit_group+0x3c/0x50 [ 13.230189][ T86] x64_sys_call+0x1567/0x1570 [ 13.230192][ T86] do_syscall_64+0xff/0x530 [ 13.230195][ T86] ? irq_exit_rcu+0x1a/0x30 [ 13.230198][ T86] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 13.230200][ T86] RIP: 0033:0x7f55127ab1b8 [ 13.230203][ T86] Code: Unable to access opcode bytes at 0x7f55127ab18e. [ 13.230204][ T86] RSP: 002b:00007ffdb98af3a8 EFLAGS: 00000256 ORIG_RAX: 00000000000000e7 [ 13.230206][ T86] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f55127ab1b8 [ 13.230208][ T86] RDX: 0000000000000000 RSI: fffffffffffffe90 RDI: 0000000000000000 [ 13.230209][ T86] RBP: 00007ffdb98af530 R08: 00005621470ba268 R09: 0000000000000000 [ 13.230209][ T86] R10: 0000000000000000 R11: 0000000000000256 R12: 0000000000000000 [ 13.230210][ T86] R13: 00007f5512009050 R14: 00007f5512cdcd9e R15: 0000562146f56870 [ 13.230217][ T86]