[ 12.079509][ T91] (udev-worker) (91) used greatest stack depth: 22696 bytes left [ 12.079528][ T91] BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:322 [ 12.079530][ T91] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 91, name: (udev-worker) [ 12.079532][ T91] preempt_count: 2, expected: 0 [ 12.079533][ T91] RCU nest depth: 0, expected: 0 [ 12.079534][ T91] locks held by (udev-worker)/91: 5, last CPU#2: [ 12.079536][ T91] #0: ffffffff87a027b8 (low_water_lock){+.+.}-{3:3}, at: do_exit+0x887/0xdc0 [ 12.079549][ T91] #1: ffffffff87b99dc0 (console_lock){+.+.}-{0:0}, at: vprintk_emit+0x320/0x3e0 [ 12.079554][ T91] #2: ffffffff87b99e38 (console_srcu){....}-{0:0}, at: console_flush_one_record+0x106/0x710 [ 12.079558][ T91] #3: ffffffff87a89760 (console_owner){....}-{0:0}, at: console_lock_spinning_enable+0x40/0x60 [ 12.079562][ T91] #4: ffffffff87a89660 (printk_legacy_map-wait-type-override){....}-{3:3}, at: console_emit_next_record+0x202/0x4f0 [ 12.079566][ T91] irq event stamp: 490222 [ 12.079567][ T91] hardirqs last enabled at (490221): [] __down_trylock_console_sem+0x86/0xa0 [ 12.079569][ T91] hardirqs last disabled at (490222): [] console_emit_next_record+0x3f8/0x4f0 [ 12.079571][ T91] softirqs last enabled at (490158): [] netlink_release+0x17b/0xcf0 [ 12.079576][ T91] softirqs last disabled at (490156): [] netlink_release+0xd2/0xcf0 [ 12.079578][ T91] Preemption disabled at: [ 12.079579][ T91] [<0000000000000000>] 0x0 [ 12.079586][ T91] CPU: 2 UID: 0 PID: 91 Comm: (udev-worker) Tainted: G W 7.2.0-virtme #1 PREEMPT(full) [ 12.079589][ T91] Tainted: [W]=WARN [ 12.079590][ T91] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 12.079592][ T91] Call Trace: [ 12.079593][ T91] [ 12.079595][ T91] dump_stack_lvl+0x6f/0xa0 [ 12.079601][ T91] __might_resched.cold+0x1fe/0x2c1 [ 12.079605][ T91] ? perf_trace_sched_switch+0x7c0/0x7c0 [ 12.079609][ T91] ? __kmalloc_noprof+0xdb/0x760 [ 12.079614][ T91] __kmalloc_noprof+0x443/0x760 [ 12.079617][ T91] ? alloc_buf.isra.0+0x4b/0x260 [ 12.079623][ T91] ? do_raw_spin_unlock+0x59/0x250 [ 12.079626][ T91] alloc_buf.isra.0+0x4b/0x260 [ 12.079629][ T91] put_chars+0x1e1/0x2f0 [ 12.079633][ T91] ? __send_to_port+0x420/0x420 [ 12.079635][ T91] ? printk_get_next_message+0x2fe/0x7d0 [ 12.079638][ T91] ? rcu_read_lock_any_held+0x3c/0x90 [ 12.079641][ T91] ? validate_chain+0x38b/0xc20 [ 12.079645][ T91] hvc_console_print+0x292/0x780 [ 12.079648][ T91] ? __lock_acquire+0x518/0xc20 [ 12.079650][ T91] ? __lock_acquire+0x518/0xc20 [ 12.079654][ T91] ? hvc_write+0x3a0/0x3a0 [ 12.079657][ T91] ? rcu_is_watching+0x16/0xd0 [ 12.079661][ T91] ? lock_acquire+0x13c/0x160 [ 12.079665][ T91] console_emit_next_record+0x252/0x4f0 [ 12.079668][ T91] ? devkmsg_read+0x4e0/0x4e0 [ 12.079672][ T91] ? rcu_is_watching+0x16/0xd0 [ 12.079675][ T91] ? lock_acquire+0x13c/0x160 [ 12.079678][ T91] console_flush_one_record+0x46f/0x710 [ 12.079682][ T91] ? console_emit_next_record+0x4f0/0x4f0 [ 12.079684][ T91] ? __lock_acquire+0x518/0xc20 [ 12.079689][ T91] console_unlock+0xee/0x1f0 [ 12.079691][ T91] ? console_flush_one_record+0x710/0x710 [ 12.079693][ T91] ? rcu_is_watching+0x16/0xd0 [ 12.079695][ T91] ? lock_acquire+0xa0/0x160 [ 12.079699][ T91] ? __down_trylock_console_sem+0x5e/0xa0 [ 12.079700][ T91] ? vprintk_emit+0x320/0x3e0 [ 12.079703][ T91] vprintk_emit+0x37c/0x3e0 [ 12.079707][ T91] ? wake_up_klogd_work_func+0x90/0x90 [ 12.079710][ T91] ? __lock_acquire+0x518/0xc20 [ 12.079714][ T91] _printk+0xc7/0x100 [ 12.079717][ T91] ? snapshot_read.cold+0x21/0x21 [ 12.079720][ T91] ? do_raw_spin_lock+0x131/0x280 [ 12.079722][ T91] ? __rwlock_init+0x150/0x150 [ 12.079726][ T91] ? do_raw_spin_lock+0x131/0x280 [ 12.079728][ T91] do_exit.cold+0x82/0x9c [ 12.079732][ T91] ? exit_notify+0x890/0x890 [ 12.079733][ T91] ? __lock_release.isra.0+0x69/0x1a0 [ 12.079736][ T91] ? rcu_is_watching+0x16/0xd0 [ 12.079740][ T91] do_group_exit+0xb8/0x370 [ 12.079742][ T91] __x64_sys_exit_group+0x3c/0x50 [ 12.079744][ T91] x64_sys_call+0x1567/0x1570 [ 12.079746][ T91] do_syscall_64+0xff/0x530 [ 12.079749][ T91] ? exc_page_fault+0xee/0x100 [ 12.079753][ T91] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 12.079755][ T91] RIP: 0033:0x7fb3032b51b8 [ 12.079757][ T91] Code: Unable to access opcode bytes at 0x7fb3032b518e. [ 12.079758][ T91] RSP: 002b:00007fff307e7458 EFLAGS: 00000256 ORIG_RAX: 00000000000000e7 [ 12.079760][ T91] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fb3032b51b8 [ 12.079762][ T91] RDX: 0000000000000000 RSI: fffffffffffffe90 RDI: 0000000000000000 [ 12.079763][ T91] RBP: 00007fff307e75e0 R08: 0000563ea7df4528 R09: 0000000000000000 [ 12.079763][ T91] R10: 0000000000000000 R11: 0000000000000256 R12: 0000000000000000 [ 12.079764][ T91] R13: 00007fb302b13050 R14: 00007fb3037e6d9e R15: 0000563ea7c91df0 [ 12.079770][ T91]