[ 24.158212][ T182] (udev-worker) (182) used greatest stack depth: 22696 bytes left [ 24.158232][ T182] BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:322 [ 24.158234][ T182] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 182, name: (udev-worker) [ 24.158236][ T182] preempt_count: 2, expected: 0 [ 24.158237][ T182] RCU nest depth: 0, expected: 0 [ 24.158238][ T182] locks held by (udev-worker)/182: 5, last CPU#2: [ 24.158240][ T182] #0: ffffffff8d2027b8 (low_water_lock){+.+.}-{3:3}, at: do_exit+0x887/0xdc0 [ 24.158251][ T182] #1: ffffffff8d399cc0 (console_lock){+.+.}-{0:0}, at: vprintk_emit+0x320/0x3e0 [ 24.158256][ T182] #2: ffffffff8d399d38 (console_srcu){....}-{0:0}, at: console_flush_one_record+0x106/0x710 [ 24.158260][ T182] #3: ffffffff8d289660 (console_owner){....}-{0:0}, at: console_lock_spinning_enable+0x40/0x60 [ 24.158264][ T182] #4: ffffffff8d289560 (printk_legacy_map-wait-type-override){....}-{3:3}, at: console_emit_next_record+0x202/0x4f0 [ 24.158268][ T182] irq event stamp: 669838 [ 24.158269][ T182] hardirqs last enabled at (669837): [] __down_trylock_console_sem+0x86/0xa0 [ 24.158272][ T182] hardirqs last disabled at (669838): [] console_emit_next_record+0x3f8/0x4f0 [ 24.158274][ T182] softirqs last enabled at (669774): [] netlink_release+0x17b/0xcf0 [ 24.158278][ T182] softirqs last disabled at (669772): [] netlink_release+0xd2/0xcf0 [ 24.158281][ T182] Preemption disabled at: [ 24.158282][ T182] [<0000000000000000>] 0x0 [ 24.158288][ T182] CPU: 2 UID: 0 PID: 182 Comm: (udev-worker) Tainted: G W 7.2.0-virtme #1 PREEMPT(full) [ 24.158292][ T182] Tainted: [W]=WARN [ 24.158293][ T182] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 24.158294][ T182] Call Trace: [ 24.158296][ T182] [ 24.158298][ T182] dump_stack_lvl+0x6f/0xa0 [ 24.158305][ T182] __might_resched.cold+0x1fe/0x2c1 [ 24.158309][ T182] ? perf_trace_sched_switch+0x7c0/0x7c0 [ 24.158313][ T182] ? __kmalloc_noprof+0xdb/0x760 [ 24.158319][ T182] __kmalloc_noprof+0x443/0x760 [ 24.158322][ T182] ? alloc_buf.isra.0+0x4b/0x260 [ 24.158328][ T182] ? do_raw_spin_unlock+0x59/0x250 [ 24.158331][ T182] alloc_buf.isra.0+0x4b/0x260 [ 24.158334][ T182] put_chars+0x1e1/0x2f0 [ 24.158337][ T182] ? __send_to_port+0x420/0x420 [ 24.158339][ T182] ? printk_get_next_message+0x2fe/0x7d0 [ 24.158343][ T182] ? rcu_read_lock_any_held+0x3c/0x90 [ 24.158347][ T182] ? validate_chain+0x38b/0xc20 [ 24.158351][ T182] hvc_console_print+0x292/0x780 [ 24.158354][ T182] ? __lock_acquire+0x518/0xc20 [ 24.158356][ T182] ? __lock_acquire+0x518/0xc20 [ 24.158361][ T182] ? hvc_write+0x3a0/0x3a0 [ 24.158364][ T182] ? rcu_is_watching+0x16/0xd0 [ 24.158366][ T182] ? lock_acquire+0x13c/0x160 [ 24.158370][ T182] console_emit_next_record+0x252/0x4f0 [ 24.158374][ T182] ? devkmsg_read+0x4e0/0x4e0 [ 24.158379][ T182] ? rcu_is_watching+0x16/0xd0 [ 24.158381][ T182] ? lock_acquire+0x13c/0x160 [ 24.158385][ T182] console_flush_one_record+0x46f/0x710 [ 24.158389][ T182] ? console_emit_next_record+0x4f0/0x4f0 [ 24.158391][ T182] ? __lock_acquire+0x518/0xc20 [ 24.158396][ T182] console_unlock+0xee/0x1f0 [ 24.158399][ T182] ? console_flush_one_record+0x710/0x710 [ 24.158401][ T182] ? rcu_is_watching+0x16/0xd0 [ 24.158403][ T182] ? lock_acquire+0x60/0x160 [ 24.158406][ T182] ? __down_trylock_console_sem+0x5e/0xa0 [ 24.158408][ T182] ? vprintk_emit+0x320/0x3e0 [ 24.158411][ T182] vprintk_emit+0x37c/0x3e0 [ 24.158414][ T182] ? wake_up_klogd_work_func+0x90/0x90 [ 24.158417][ T182] ? __lock_acquire+0x518/0xc20 [ 24.158421][ T182] _printk+0xc7/0x100 [ 24.158424][ T182] ? snapshot_read.cold+0x21/0x21 [ 24.158427][ T182] ? do_raw_spin_lock+0x131/0x280 [ 24.158430][ T182] ? __rwlock_init+0x150/0x150 [ 24.158434][ T182] ? do_raw_spin_lock+0x131/0x280 [ 24.158436][ T182] do_exit.cold+0x82/0x9c [ 24.158440][ T182] ? exit_notify+0x890/0x890 [ 24.158442][ T182] ? __lock_release.isra.0+0x69/0x1a0 [ 24.158445][ T182] ? rcu_is_watching+0x16/0xd0 [ 24.158448][ T182] do_group_exit+0xb8/0x370 [ 24.158451][ T182] __x64_sys_exit_group+0x3c/0x50 [ 24.158453][ T182] x64_sys_call+0x1567/0x1570 [ 24.158455][ T182] do_syscall_64+0xff/0x530 [ 24.158459][ T182] ? exc_page_fault+0xee/0x100 [ 24.158462][ T182] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 24.158464][ T182] RIP: 0033:0x7f1ddd7c21b8 [ 24.158467][ T182] Code: Unable to access opcode bytes at 0x7f1ddd7c218e. [ 24.158468][ T182] RSP: 002b:00007fff67a7f378 EFLAGS: 00000256 ORIG_RAX: 00000000000000e7 [ 24.158470][ T182] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f1ddd7c21b8 [ 24.158472][ T182] RDX: 0000000000000000 RSI: fffffffffffffe90 RDI: 0000000000000000 [ 24.158473][ T182] RBP: 00007fff67a7f500 R08: 000055d12f8454c8 R09: 0000000000000000 [ 24.158473][ T182] R10: 0000000000000000 R11: 0000000000000256 R12: 0000000000000000 [ 24.158474][ T182] R13: 00007f1ddd020050 R14: 00007f1dddcf3d9e R15: 000055d12f83f380 [ 24.158481][ T182]