[ 17.166947][ T181] (udev-worker) (181) used greatest stack depth: 22696 bytes left [ 17.166969][ T181] BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:322 [ 17.166972][ T181] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 181, name: (udev-worker) [ 17.166975][ T181] preempt_count: 2, expected: 0 [ 17.166976][ T181] RCU nest depth: 0, expected: 0 [ 17.166977][ T181] locks held by (udev-worker)/181: 5, last CPU#0: [ 17.166980][ T181] #0: ffffffffa80027b8 (low_water_lock){+.+.}-{3:3}, at: do_exit+0x887/0xdc0 [ 17.166995][ T181] #1: ffffffffa8199cc0 (console_lock){+.+.}-{0:0}, at: vprintk_emit+0x320/0x3e0 [ 17.167002][ T181] #2: ffffffffa8199d38 (console_srcu){....}-{0:0}, at: console_flush_one_record+0x106/0x710 [ 17.167009][ T181] #3: ffffffffa8089660 (console_owner){....}-{0:0}, at: console_lock_spinning_enable+0x40/0x60 [ 17.167015][ T181] #4: ffffffffa8089560 (printk_legacy_map-wait-type-override){....}-{3:3}, at: console_emit_next_record+0x202/0x4f0 [ 17.167021][ T181] irq event stamp: 157716 [ 17.167023][ T181] hardirqs last enabled at (157715): [] __down_trylock_console_sem+0x86/0xa0 [ 17.167027][ T181] hardirqs last disabled at (157716): [] console_emit_next_record+0x3f8/0x4f0 [ 17.167030][ T181] softirqs last enabled at (157616): [] netlink_release+0x17b/0xcf0 [ 17.167036][ T181] softirqs last disabled at (157614): [] netlink_release+0xd2/0xcf0 [ 17.167039][ T181] Preemption disabled at: [ 17.167040][ T181] [<0000000000000000>] 0x0 [ 17.167049][ T181] CPU: 0 UID: 0 PID: 181 Comm: (udev-worker) Tainted: G W 7.2.0-virtme #1 PREEMPT(full) [ 17.167054][ T181] Tainted: [W]=WARN [ 17.167055][ T181] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 17.167057][ T181] Call Trace: [ 17.167060][ T181] [ 17.167062][ T181] dump_stack_lvl+0x6f/0xa0 [ 17.167070][ T181] __might_resched.cold+0x1fe/0x2c1 [ 17.167076][ T181] ? perf_trace_sched_switch+0x7c0/0x7c0 [ 17.167082][ T181] ? __kmalloc_noprof+0xdb/0x760 [ 17.167090][ T181] __kmalloc_noprof+0x443/0x760 [ 17.167094][ T181] ? alloc_buf.isra.0+0x4b/0x260 [ 17.167103][ T181] ? do_raw_spin_unlock+0x59/0x250 [ 17.167107][ T181] alloc_buf.isra.0+0x4b/0x260 [ 17.167113][ T181] put_chars+0x1e1/0x2f0 [ 17.167117][ T181] ? __send_to_port+0x420/0x420 [ 17.167120][ T181] ? printk_get_next_message+0x2fe/0x7d0 [ 17.167126][ T181] ? rcu_read_lock_any_held+0x3c/0x90 [ 17.167131][ T181] ? validate_chain+0x38b/0xc20 [ 17.167142][ T181] hvc_console_print+0x292/0x780 [ 17.167147][ T181] ? __lock_acquire+0x518/0xc20 [ 17.167150][ T181] ? __lock_acquire+0x518/0xc20 [ 17.167158][ T181] ? hvc_write+0x3a0/0x3a0 [ 17.167164][ T181] ? rcu_is_watching+0x16/0xd0 [ 17.167168][ T181] ? lock_acquire+0x13c/0x160 [ 17.167175][ T181] console_emit_next_record+0x252/0x4f0 [ 17.167181][ T181] ? devkmsg_read+0x4e0/0x4e0 [ 17.167189][ T181] ? rcu_is_watching+0x16/0xd0 [ 17.167192][ T181] ? lock_acquire+0x13c/0x160 [ 17.167199][ T181] console_flush_one_record+0x46f/0x710 [ 17.167207][ T181] ? console_emit_next_record+0x4f0/0x4f0 [ 17.167209][ T181] ? __lock_acquire+0x518/0xc20 [ 17.167219][ T181] console_unlock+0xee/0x1f0 [ 17.167223][ T181] ? console_flush_one_record+0x710/0x710 [ 17.167226][ T181] ? rcu_is_watching+0x16/0xd0 [ 17.167229][ T181] ? lock_acquire+0x60/0x160 [ 17.167236][ T181] ? __down_trylock_console_sem+0x5e/0xa0 [ 17.167239][ T181] ? vprintk_emit+0x320/0x3e0 [ 17.167244][ T181] vprintk_emit+0x37c/0x3e0 [ 17.167249][ T181] ? wake_up_klogd_work_func+0x90/0x90 [ 17.167255][ T181] ? __lock_acquire+0x518/0xc20 [ 17.167261][ T181] _printk+0xc7/0x100 [ 17.167267][ T181] ? snapshot_read.cold+0x21/0x21 [ 17.167271][ T181] ? do_raw_spin_lock+0x131/0x280 [ 17.167276][ T181] ? __rwlock_init+0x150/0x150 [ 17.167282][ T181] ? do_raw_spin_lock+0x131/0x280 [ 17.167287][ T181] do_exit.cold+0x82/0x9c [ 17.167293][ T181] ? exit_notify+0x890/0x890 [ 17.167295][ T181] ? __lock_release.isra.0+0x69/0x1a0 [ 17.167300][ T181] ? rcu_is_watching+0x16/0xd0 [ 17.167306][ T181] do_group_exit+0xb8/0x370 [ 17.167311][ T181] __x64_sys_exit_group+0x3c/0x50 [ 17.167314][ T181] x64_sys_call+0x1567/0x1570 [ 17.167318][ T181] do_syscall_64+0xff/0x530 [ 17.167323][ T181] ? exc_page_fault+0xee/0x100 [ 17.167328][ T181] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 17.167331][ T181] RIP: 0033:0x7f857bb2e1b8 [ 17.167335][ T181] Code: Unable to access opcode bytes at 0x7f857bb2e18e. [ 17.167336][ T181] RSP: 002b:00007ffd174d3fb8 EFLAGS: 00000256 ORIG_RAX: 00000000000000e7 [ 17.167339][ T181] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f857bb2e1b8 [ 17.167342][ T181] RDX: 0000000000000000 RSI: fffffffffffffe90 RDI: 0000000000000000 [ 17.167343][ T181] RBP: 00007ffd174d4140 R08: 000056236fa7ef98 R09: 0000000000000000 [ 17.167345][ T181] R10: 0000000000000000 R11: 0000000000000256 R12: 0000000000000000 [ 17.167346][ T181] R13: 00007f857b38c050 R14: 00007f857c05fd9e R15: 000056236fa7c4b0 [ 17.167359][ T181]