[ 15.545087][ T181] (udev-worker) (181) used greatest stack depth: 22696 bytes left [ 15.545104][ T181] BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:322 [ 15.545106][ T181] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 181, name: (udev-worker) [ 15.545108][ T181] preempt_count: 2, expected: 0 [ 15.545109][ T181] RCU nest depth: 0, expected: 0 [ 15.545110][ T181] locks held by (udev-worker)/181: 5, last CPU#0: [ 15.545112][ T181] #0: ffffffffb8e027b8 (low_water_lock){+.+.}-{3:3}, at: do_exit+0x887/0xdc0 [ 15.545124][ T181] #1: ffffffffb8f99cc0 (console_lock){+.+.}-{0:0}, at: vprintk_emit+0x320/0x3e0 [ 15.545128][ T181] #2: ffffffffb8f99d38 (console_srcu){....}-{0:0}, at: console_flush_one_record+0x106/0x710 [ 15.545133][ T181] #3: ffffffffb8e89660 (console_owner){....}-{0:0}, at: console_lock_spinning_enable+0x40/0x60 [ 15.545137][ T181] #4: ffffffffb8e89560 (printk_legacy_map-wait-type-override){....}-{3:3}, at: console_emit_next_record+0x202/0x4f0 [ 15.545141][ T181] irq event stamp: 129760 [ 15.545142][ T181] hardirqs last enabled at (129759): [] __down_trylock_console_sem+0x86/0xa0 [ 15.545145][ T181] hardirqs last disabled at (129760): [] console_emit_next_record+0x3f8/0x4f0 [ 15.545147][ T181] softirqs last enabled at (129696): [] netlink_release+0x17b/0xcf0 [ 15.545152][ T181] softirqs last disabled at (129694): [] netlink_release+0xd2/0xcf0 [ 15.545154][ T181] Preemption disabled at: [ 15.545155][ T181] [<0000000000000000>] 0x0 [ 15.545162][ T181] CPU: 0 UID: 0 PID: 181 Comm: (udev-worker) Tainted: G W 7.2.0-virtme #1 PREEMPT(full) [ 15.545165][ T181] Tainted: [W]=WARN [ 15.545166][ T181] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 15.545168][ T181] Call Trace: [ 15.545170][ T181] [ 15.545172][ T181] dump_stack_lvl+0x6f/0xa0 [ 15.545178][ T181] __might_resched.cold+0x1fe/0x2c1 [ 15.545183][ T181] ? perf_trace_sched_switch+0x7c0/0x7c0 [ 15.545188][ T181] ? __kmalloc_noprof+0xdb/0x760 [ 15.545194][ T181] __kmalloc_noprof+0x443/0x760 [ 15.545196][ T181] ? alloc_buf.isra.0+0x4b/0x260 [ 15.545202][ T181] ? do_raw_spin_unlock+0x59/0x250 [ 15.545205][ T181] alloc_buf.isra.0+0x4b/0x260 [ 15.545209][ T181] put_chars+0x1e1/0x2f0 [ 15.545212][ T181] ? __send_to_port+0x420/0x420 [ 15.545214][ T181] ? printk_get_next_message+0x2fe/0x7d0 [ 15.545218][ T181] ? rcu_read_lock_any_held+0x3c/0x90 [ 15.545222][ T181] ? validate_chain+0x38b/0xc20 [ 15.545226][ T181] hvc_console_print+0x292/0x780 [ 15.545230][ T181] ? __lock_acquire+0x518/0xc20 [ 15.545231][ T181] ? __lock_acquire+0x518/0xc20 [ 15.545236][ T181] ? hvc_write+0x3a0/0x3a0 [ 15.545240][ T181] ? rcu_is_watching+0x16/0xd0 [ 15.545242][ T181] ? lock_acquire+0x13c/0x160 [ 15.545246][ T181] console_emit_next_record+0x252/0x4f0 [ 15.545250][ T181] ? devkmsg_read+0x4e0/0x4e0 [ 15.545255][ T181] ? rcu_is_watching+0x16/0xd0 [ 15.545257][ T181] ? lock_acquire+0x13c/0x160 [ 15.545261][ T181] console_flush_one_record+0x46f/0x710 [ 15.545265][ T181] ? console_emit_next_record+0x4f0/0x4f0 [ 15.545267][ T181] ? __lock_acquire+0x518/0xc20 [ 15.545273][ T181] console_unlock+0xee/0x1f0 [ 15.545276][ T181] ? console_flush_one_record+0x710/0x710 [ 15.545278][ T181] ? rcu_is_watching+0x16/0xd0 [ 15.545280][ T181] ? lock_acquire+0x60/0x160 [ 15.545284][ T181] ? __down_trylock_console_sem+0x5e/0xa0 [ 15.545285][ T181] ? vprintk_emit+0x320/0x3e0 [ 15.545288][ T181] vprintk_emit+0x37c/0x3e0 [ 15.545294][ T181] ? wake_up_klogd_work_func+0x90/0x90 [ 15.545297][ T181] ? __lock_acquire+0x518/0xc20 [ 15.545301][ T181] _printk+0xc7/0x100 [ 15.545304][ T181] ? snapshot_read.cold+0x21/0x21 [ 15.545307][ T181] ? do_raw_spin_lock+0x131/0x280 [ 15.545310][ T181] ? __rwlock_init+0x150/0x150 [ 15.545314][ T181] ? do_raw_spin_lock+0x131/0x280 [ 15.545317][ T181] do_exit.cold+0x82/0x9c [ 15.545321][ T181] ? exit_notify+0x890/0x890 [ 15.545323][ T181] ? __lock_release.isra.0+0x69/0x1a0 [ 15.545326][ T181] ? rcu_is_watching+0x16/0xd0 [ 15.545329][ T181] do_group_exit+0xb8/0x370 [ 15.545332][ T181] __x64_sys_exit_group+0x3c/0x50 [ 15.545334][ T181] x64_sys_call+0x1567/0x1570 [ 15.545336][ T181] do_syscall_64+0xff/0x530 [ 15.545340][ T181] ? exc_page_fault+0xee/0x100 [ 15.545343][ T181] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 15.545345][ T181] RIP: 0033:0x7f6d9eb6d1b8 [ 15.545348][ T181] Code: Unable to access opcode bytes at 0x7f6d9eb6d18e. [ 15.545349][ T181] RSP: 002b:00007ffeaa2d60e8 EFLAGS: 00000256 ORIG_RAX: 00000000000000e7 [ 15.545351][ T181] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f6d9eb6d1b8 [ 15.545353][ T181] RDX: 0000000000000000 RSI: fffffffffffffe90 RDI: 0000000000000000 [ 15.545354][ T181] RBP: 00007ffeaa2d6270 R08: 0000557150f139c8 R09: 0000000000000000 [ 15.545355][ T181] R10: 0000000000000000 R11: 0000000000000256 R12: 0000000000000000 [ 15.545356][ T181] R13: 00007f6d9e3cb050 R14: 00007f6d9f09ed9e R15: 0000557150d8b490 [ 15.545362][ T181]