[ 15.333225][ T182] (udev-worker) (182) used greatest stack depth: 22696 bytes left [ 15.333246][ T182] BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:322 [ 15.333248][ T182] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 182, name: (udev-worker) [ 15.333250][ T182] preempt_count: 2, expected: 0 [ 15.333251][ T182] RCU nest depth: 0, expected: 0 [ 15.333252][ T182] locks held by (udev-worker)/182: 5, last CPU#3: [ 15.333254][ T182] #0: ffffffffa76027b8 (low_water_lock){+.+.}-{3:3}, at: do_exit+0x887/0xdc0 [ 15.333266][ T182] #1: ffffffffa7799cc0 (console_lock){+.+.}-{0:0}, at: vprintk_emit+0x320/0x3e0 [ 15.333271][ T182] #2: ffffffffa7799d38 (console_srcu){....}-{0:0}, at: console_flush_one_record+0x106/0x710 [ 15.333275][ T182] #3: ffffffffa7689660 (console_owner){....}-{0:0}, at: console_lock_spinning_enable+0x40/0x60 [ 15.333279][ T182] #4: ffffffffa7689560 (printk_legacy_map-wait-type-override){....}-{3:3}, at: console_emit_next_record+0x202/0x4f0 [ 15.333283][ T182] irq event stamp: 63794 [ 15.333284][ T182] hardirqs last enabled at (63793): [] __down_trylock_console_sem+0x86/0xa0 [ 15.333287][ T182] hardirqs last disabled at (63794): [] console_emit_next_record+0x3f8/0x4f0 [ 15.333289][ T182] softirqs last enabled at (63728): [] netlink_release+0x17b/0xcf0 [ 15.333294][ T182] softirqs last disabled at (63726): [] netlink_release+0xd2/0xcf0 [ 15.333297][ T182] Preemption disabled at: [ 15.333298][ T182] [<0000000000000000>] 0x0 [ 15.333304][ T182] CPU: 3 UID: 0 PID: 182 Comm: (udev-worker) Tainted: G W 7.2.0-virtme #1 PREEMPT(full) [ 15.333308][ T182] Tainted: [W]=WARN [ 15.333309][ T182] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 15.333311][ T182] Call Trace: [ 15.333312][ T182] [ 15.333314][ T182] dump_stack_lvl+0x6f/0xa0 [ 15.333321][ T182] __might_resched.cold+0x1fe/0x2c1 [ 15.333326][ T182] ? perf_trace_sched_switch+0x7c0/0x7c0 [ 15.333330][ T182] ? __kmalloc_noprof+0xdb/0x760 [ 15.333336][ T182] __kmalloc_noprof+0x443/0x760 [ 15.333338][ T182] ? alloc_buf.isra.0+0x4b/0x260 [ 15.333344][ T182] ? do_raw_spin_unlock+0x59/0x250 [ 15.333347][ T182] alloc_buf.isra.0+0x4b/0x260 [ 15.333351][ T182] put_chars+0x1e1/0x2f0 [ 15.333354][ T182] ? __send_to_port+0x420/0x420 [ 15.333356][ T182] ? printk_get_next_message+0x2fe/0x7d0 [ 15.333359][ T182] ? rcu_read_lock_any_held+0x3c/0x90 [ 15.333363][ T182] ? validate_chain+0x38b/0xc20 [ 15.333367][ T182] hvc_console_print+0x292/0x780 [ 15.333370][ T182] ? __lock_acquire+0x518/0xc20 [ 15.333372][ T182] ? __lock_acquire+0x518/0xc20 [ 15.333377][ T182] ? hvc_write+0x3a0/0x3a0 [ 15.333380][ T182] ? rcu_is_watching+0x16/0xd0 [ 15.333382][ T182] ? lock_acquire+0x13c/0x160 [ 15.333386][ T182] console_emit_next_record+0x252/0x4f0 [ 15.333390][ T182] ? devkmsg_read+0x4e0/0x4e0 [ 15.333394][ T182] ? rcu_is_watching+0x16/0xd0 [ 15.333396][ T182] ? lock_acquire+0x13c/0x160 [ 15.333400][ T182] console_flush_one_record+0x46f/0x710 [ 15.333404][ T182] ? console_emit_next_record+0x4f0/0x4f0 [ 15.333406][ T182] ? __lock_acquire+0x518/0xc20 [ 15.333411][ T182] console_unlock+0xee/0x1f0 [ 15.333414][ T182] ? console_flush_one_record+0x710/0x710 [ 15.333416][ T182] ? rcu_is_watching+0x16/0xd0 [ 15.333418][ T182] ? lock_acquire+0x60/0x160 [ 15.333421][ T182] ? __down_trylock_console_sem+0x5e/0xa0 [ 15.333423][ T182] ? vprintk_emit+0x320/0x3e0 [ 15.333426][ T182] vprintk_emit+0x37c/0x3e0 [ 15.333429][ T182] ? wake_up_klogd_work_func+0x90/0x90 [ 15.333432][ T182] ? __lock_acquire+0x518/0xc20 [ 15.333435][ T182] _printk+0xc7/0x100 [ 15.333439][ T182] ? snapshot_read.cold+0x21/0x21 [ 15.333441][ T182] ? do_raw_spin_lock+0x131/0x280 [ 15.333444][ T182] ? __rwlock_init+0x150/0x150 [ 15.333448][ T182] ? do_raw_spin_lock+0x131/0x280 [ 15.333451][ T182] do_exit.cold+0x82/0x9c [ 15.333455][ T182] ? exit_notify+0x890/0x890 [ 15.333456][ T182] ? __lock_release.isra.0+0x69/0x1a0 [ 15.333459][ T182] ? rcu_is_watching+0x16/0xd0 [ 15.333462][ T182] do_group_exit+0xb8/0x370 [ 15.333465][ T182] __x64_sys_exit_group+0x3c/0x50 [ 15.333467][ T182] x64_sys_call+0x1567/0x1570 [ 15.333469][ T182] do_syscall_64+0xff/0x530 [ 15.333473][ T182] ? exc_page_fault+0xee/0x100 [ 15.333476][ T182] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 15.333478][ T182] RIP: 0033:0x7f8160cc91b8 [ 15.333480][ T182] Code: Unable to access opcode bytes at 0x7f8160cc918e. [ 15.333482][ T182] RSP: 002b:00007ffda1d99f88 EFLAGS: 00000256 ORIG_RAX: 00000000000000e7 [ 15.333484][ T182] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f8160cc91b8 [ 15.333485][ T182] RDX: 0000000000000000 RSI: fffffffffffffe90 RDI: 0000000000000000 [ 15.333486][ T182] RBP: 00007ffda1d9a110 R08: 0000565029749aa8 R09: 0000000000000000 [ 15.333487][ T182] R10: 0000000000000000 R11: 0000000000000256 R12: 0000000000000000 [ 15.333488][ T182] R13: 00007f8160527050 R14: 00007f81611fad9e R15: 0000565029728b60 [ 15.333494][ T182]