[ 11.843961][ T91] (udev-worker) (91) used greatest stack depth: 22696 bytes left [ 11.843977][ T91] BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:322 [ 11.843979][ T91] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 91, name: (udev-worker) [ 11.843981][ T91] preempt_count: 2, expected: 0 [ 11.843981][ T91] RCU nest depth: 0, expected: 0 [ 11.843983][ T91] locks held by (udev-worker)/91: 5, last CPU#3: [ 11.843985][ T91] #0: ffffffffb7a027b8 (low_water_lock){+.+.}-{3:3}, at: do_exit+0x887/0xdc0 [ 11.843996][ T91] #1: ffffffffb7b99dc0 (console_lock){+.+.}-{0:0}, at: vprintk_emit+0x320/0x3e0 [ 11.844002][ T91] #2: ffffffffb7b99e38 (console_srcu){....}-{0:0}, at: console_flush_one_record+0x106/0x710 [ 11.844006][ T91] #3: ffffffffb7a89760 (console_owner){....}-{0:0}, at: console_lock_spinning_enable+0x40/0x60 [ 11.844010][ T91] #4: ffffffffb7a89660 (printk_legacy_map-wait-type-override){....}-{3:3}, at: console_emit_next_record+0x202/0x4f0 [ 11.844014][ T91] irq event stamp: 410554 [ 11.844015][ T91] hardirqs last enabled at (410553): [] __down_trylock_console_sem+0x86/0xa0 [ 11.844017][ T91] hardirqs last disabled at (410554): [] console_emit_next_record+0x3f8/0x4f0 [ 11.844019][ T91] softirqs last enabled at (410490): [] netlink_release+0x17b/0xcf0 [ 11.844024][ T91] softirqs last disabled at (410488): [] netlink_release+0xd2/0xcf0 [ 11.844026][ T91] Preemption disabled at: [ 11.844027][ T91] [<0000000000000000>] 0x0 [ 11.844034][ T91] CPU: 3 UID: 0 PID: 91 Comm: (udev-worker) Tainted: G W 7.2.0-virtme #1 PREEMPT(full) [ 11.844039][ T91] Tainted: [W]=WARN [ 11.844040][ T91] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 11.844042][ T91] Call Trace: [ 11.844045][ T91] [ 11.844047][ T91] dump_stack_lvl+0x6f/0xa0 [ 11.844054][ T91] __might_resched.cold+0x1fe/0x2c1 [ 11.844059][ T91] ? perf_trace_sched_switch+0x7c0/0x7c0 [ 11.844063][ T91] ? __kmalloc_noprof+0xdb/0x760 [ 11.844068][ T91] __kmalloc_noprof+0x443/0x760 [ 11.844071][ T91] ? alloc_buf.isra.0+0x4b/0x260 [ 11.844077][ T91] ? do_raw_spin_unlock+0x59/0x250 [ 11.844080][ T91] alloc_buf.isra.0+0x4b/0x260 [ 11.844083][ T91] put_chars+0x1e1/0x2f0 [ 11.844087][ T91] ? __send_to_port+0x420/0x420 [ 11.844089][ T91] ? printk_get_next_message+0x2fe/0x7d0 [ 11.844093][ T91] ? rcu_read_lock_any_held+0x3c/0x90 [ 11.844096][ T91] ? validate_chain+0x38b/0xc20 [ 11.844100][ T91] hvc_console_print+0x292/0x780 [ 11.844104][ T91] ? __lock_acquire+0x518/0xc20 [ 11.844105][ T91] ? __lock_acquire+0x518/0xc20 [ 11.844110][ T91] ? hvc_write+0x3a0/0x3a0 [ 11.844113][ T91] ? rcu_is_watching+0x16/0xd0 [ 11.844117][ T91] ? lock_acquire+0x13c/0x160 [ 11.844121][ T91] console_emit_next_record+0x252/0x4f0 [ 11.844124][ T91] ? devkmsg_read+0x4e0/0x4e0 [ 11.844129][ T91] ? rcu_is_watching+0x16/0xd0 [ 11.844131][ T91] ? lock_acquire+0x13c/0x160 [ 11.844135][ T91] console_flush_one_record+0x46f/0x710 [ 11.844139][ T91] ? console_emit_next_record+0x4f0/0x4f0 [ 11.844141][ T91] ? __lock_acquire+0x518/0xc20 [ 11.844146][ T91] console_unlock+0xee/0x1f0 [ 11.844149][ T91] ? console_flush_one_record+0x710/0x710 [ 11.844151][ T91] ? rcu_is_watching+0x16/0xd0 [ 11.844153][ T91] ? lock_acquire+0xa0/0x160 [ 11.844157][ T91] ? __down_trylock_console_sem+0x5e/0xa0 [ 11.844158][ T91] ? vprintk_emit+0x320/0x3e0 [ 11.844162][ T91] vprintk_emit+0x37c/0x3e0 [ 11.844166][ T91] ? wake_up_klogd_work_func+0x90/0x90 [ 11.844169][ T91] ? __lock_acquire+0x518/0xc20 [ 11.844173][ T91] _printk+0xc7/0x100 [ 11.844176][ T91] ? snapshot_read.cold+0x21/0x21 [ 11.844179][ T91] ? do_raw_spin_lock+0x131/0x280 [ 11.844181][ T91] ? __rwlock_init+0x150/0x150 [ 11.844185][ T91] ? do_raw_spin_lock+0x131/0x280 [ 11.844188][ T91] do_exit.cold+0x82/0x9c [ 11.844192][ T91] ? exit_notify+0x890/0x890 [ 11.844193][ T91] ? __lock_release.isra.0+0x69/0x1a0 [ 11.844196][ T91] ? rcu_is_watching+0x16/0xd0 [ 11.844200][ T91] do_group_exit+0xb8/0x370 [ 11.844203][ T91] __x64_sys_exit_group+0x3c/0x50 [ 11.844204][ T91] x64_sys_call+0x1567/0x1570 [ 11.844207][ T91] do_syscall_64+0xff/0x530 [ 11.844210][ T91] ? exc_page_fault+0xee/0x100 [ 11.844213][ T91] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 11.844216][ T91] RIP: 0033:0x7f0366dee1b8 [ 11.844218][ T91] Code: Unable to access opcode bytes at 0x7f0366dee18e. [ 11.844219][ T91] RSP: 002b:00007ffe51f120b8 EFLAGS: 00000256 ORIG_RAX: 00000000000000e7 [ 11.844222][ T91] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f0366dee1b8 [ 11.844223][ T91] RDX: 0000000000000000 RSI: fffffffffffffe90 RDI: 0000000000000000 [ 11.844224][ T91] RBP: 00007ffe51f12240 R08: 0000561c9c441648 R09: 0000000000000000 [ 11.844225][ T91] R10: 0000000000000000 R11: 0000000000000256 R12: 0000000000000000 [ 11.844226][ T91] R13: 00007f036664c050 R14: 00007f036731fd9e R15: 0000561c9c2c4db0 [ 11.844232][ T91]