[ 13.717715][ T91] (udev-worker) (91) used greatest stack depth: 22696 bytes left [ 13.717732][ T91] BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:322 [ 13.717734][ T91] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 91, name: (udev-worker) [ 13.717736][ T91] preempt_count: 2, expected: 0 [ 13.717737][ T91] RCU nest depth: 0, expected: 0 [ 13.717738][ T91] locks held by (udev-worker)/91: 5, last CPU#1: [ 13.717740][ T91] #0: ffffffff9fe027b8 (low_water_lock){+.+.}-{3:3}, at: do_exit+0x887/0xdc0 [ 13.717751][ T91] #1: ffffffff9ff99dc0 (console_lock){+.+.}-{0:0}, at: vprintk_emit+0x320/0x3e0 [ 13.717761][ T91] #2: ffffffff9ff99e38 (console_srcu){....}-{0:0}, at: console_flush_one_record+0x106/0x710 [ 13.717765][ T91] #3: ffffffff9fe89760 (console_owner){....}-{0:0}, at: console_lock_spinning_enable+0x40/0x60 [ 13.717769][ T91] #4: ffffffff9fe89660 (printk_legacy_map-wait-type-override){....}-{3:3}, at: console_emit_next_record+0x202/0x4f0 [ 13.717773][ T91] irq event stamp: 401168 [ 13.717774][ T91] hardirqs last enabled at (401167): [] __down_trylock_console_sem+0x86/0xa0 [ 13.717777][ T91] hardirqs last disabled at (401168): [] console_emit_next_record+0x3f8/0x4f0 [ 13.717779][ T91] softirqs last enabled at (401104): [] netlink_release+0x17b/0xcf0 [ 13.717783][ T91] softirqs last disabled at (401102): [] netlink_release+0xd2/0xcf0 [ 13.717786][ T91] Preemption disabled at: [ 13.717787][ T91] [<0000000000000000>] 0x0 [ 13.717794][ T91] CPU: 1 UID: 0 PID: 91 Comm: (udev-worker) Tainted: G W 7.2.0-virtme #1 PREEMPT(full) [ 13.717797][ T91] Tainted: [W]=WARN [ 13.717798][ T91] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 13.717799][ T91] Call Trace: [ 13.717801][ T91] [ 13.717803][ T91] dump_stack_lvl+0x6f/0xa0 [ 13.717809][ T91] __might_resched.cold+0x1fe/0x2c1 [ 13.717813][ T91] ? perf_trace_sched_switch+0x7c0/0x7c0 [ 13.717817][ T91] ? __kmalloc_noprof+0xdb/0x760 [ 13.717823][ T91] __kmalloc_noprof+0x443/0x760 [ 13.717825][ T91] ? alloc_buf.isra.0+0x4b/0x260 [ 13.717832][ T91] ? do_raw_spin_unlock+0x59/0x250 [ 13.717834][ T91] alloc_buf.isra.0+0x4b/0x260 [ 13.717838][ T91] put_chars+0x1e1/0x2f0 [ 13.717841][ T91] ? __send_to_port+0x420/0x420 [ 13.717844][ T91] ? printk_get_next_message+0x2fe/0x7d0 [ 13.717847][ T91] ? rcu_read_lock_any_held+0x3c/0x90 [ 13.717850][ T91] ? validate_chain+0x38b/0xc20 [ 13.717854][ T91] hvc_console_print+0x292/0x780 [ 13.717858][ T91] ? __lock_acquire+0x518/0xc20 [ 13.717860][ T91] ? __lock_acquire+0x518/0xc20 [ 13.717864][ T91] ? hvc_write+0x3a0/0x3a0 [ 13.717868][ T91] ? rcu_is_watching+0x16/0xd0 [ 13.717871][ T91] ? lock_acquire+0x13c/0x160 [ 13.717875][ T91] console_emit_next_record+0x252/0x4f0 [ 13.717879][ T91] ? devkmsg_read+0x4e0/0x4e0 [ 13.717884][ T91] ? rcu_is_watching+0x16/0xd0 [ 13.717886][ T91] ? lock_acquire+0x13c/0x160 [ 13.717890][ T91] console_flush_one_record+0x46f/0x710 [ 13.717894][ T91] ? console_emit_next_record+0x4f0/0x4f0 [ 13.717896][ T91] ? __lock_acquire+0x518/0xc20 [ 13.717901][ T91] console_unlock+0xee/0x1f0 [ 13.717904][ T91] ? console_flush_one_record+0x710/0x710 [ 13.717906][ T91] ? rcu_is_watching+0x16/0xd0 [ 13.717908][ T91] ? lock_acquire+0xa0/0x160 [ 13.717912][ T91] ? __down_trylock_console_sem+0x5e/0xa0 [ 13.717914][ T91] ? vprintk_emit+0x320/0x3e0 [ 13.717917][ T91] vprintk_emit+0x37c/0x3e0 [ 13.717921][ T91] ? wake_up_klogd_work_func+0x90/0x90 [ 13.717925][ T91] ? __lock_acquire+0x518/0xc20 [ 13.717928][ T91] _printk+0xc7/0x100 [ 13.717932][ T91] ? snapshot_read.cold+0x21/0x21 [ 13.717935][ T91] ? do_raw_spin_lock+0x131/0x280 [ 13.717937][ T91] ? __rwlock_init+0x150/0x150 [ 13.717941][ T91] ? do_raw_spin_lock+0x131/0x280 [ 13.717944][ T91] do_exit.cold+0x82/0x9c [ 13.717948][ T91] ? exit_notify+0x890/0x890 [ 13.717949][ T91] ? __lock_release.isra.0+0x69/0x1a0 [ 13.717952][ T91] ? rcu_is_watching+0x16/0xd0 [ 13.717956][ T91] do_group_exit+0xb8/0x370 [ 13.717959][ T91] __x64_sys_exit_group+0x3c/0x50 [ 13.717961][ T91] x64_sys_call+0x1567/0x1570 [ 13.717963][ T91] do_syscall_64+0xff/0x530 [ 13.717966][ T91] ? exc_page_fault+0xee/0x100 [ 13.717969][ T91] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 13.717972][ T91] RIP: 0033:0x7f6a5c8d21b8 [ 13.717974][ T91] Code: Unable to access opcode bytes at 0x7f6a5c8d218e. [ 13.717975][ T91] RSP: 002b:00007ffda85b49f8 EFLAGS: 00000256 ORIG_RAX: 00000000000000e7 [ 13.717978][ T91] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f6a5c8d21b8 [ 13.717980][ T91] RDX: 0000000000000000 RSI: fffffffffffffe90 RDI: 0000000000000000 [ 13.717980][ T91] RBP: 00007ffda85b4b80 R08: 0000563d0dd37de8 R09: 0000000000000000 [ 13.717981][ T91] R10: 0000000000000000 R11: 0000000000000256 R12: 0000000000000000 [ 13.717982][ T91] R13: 00007f6a5c130050 R14: 00007f6a5ce03d9e R15: 0000563d0dbd5cf0 [ 13.717989][ T91]