[ 11.971948][ T84] (udev-worker) (84) used greatest stack depth: 22696 bytes left [ 11.971964][ T84] BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:322 [ 11.971966][ T84] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 84, name: (udev-worker) [ 11.971968][ T84] preempt_count: 2, expected: 0 [ 11.971969][ T84] RCU nest depth: 0, expected: 0 [ 11.971970][ T84] locks held by (udev-worker)/84: 5, last CPU#0: [ 11.971972][ T84] #0: ffffffff974027b8 (low_water_lock){+.+.}-{3:3}, at: do_exit+0x887/0xdc0 [ 11.971984][ T84] #1: ffffffff97599dc0 (console_lock){+.+.}-{0:0}, at: vprintk_emit+0x320/0x3e0 [ 11.971989][ T84] #2: ffffffff97599e38 (console_srcu){....}-{0:0}, at: console_flush_one_record+0x106/0x710 [ 11.971993][ T84] #3: ffffffff97489760 (console_owner){....}-{0:0}, at: console_lock_spinning_enable+0x40/0x60 [ 11.971997][ T84] #4: ffffffff97489660 (printk_legacy_map-wait-type-override){....}-{3:3}, at: console_emit_next_record+0x202/0x4f0 [ 11.972001][ T84] irq event stamp: 474716 [ 11.972002][ T84] hardirqs last enabled at (474715): [] __down_trylock_console_sem+0x86/0xa0 [ 11.972004][ T84] hardirqs last disabled at (474716): [] console_emit_next_record+0x3f8/0x4f0 [ 11.972006][ T84] softirqs last enabled at (474652): [] netlink_release+0x17b/0xcf0 [ 11.972011][ T84] softirqs last disabled at (474650): [] netlink_release+0xd2/0xcf0 [ 11.972013][ T84] Preemption disabled at: [ 11.972014][ T84] [<0000000000000000>] 0x0 [ 11.972020][ T84] CPU: 0 UID: 0 PID: 84 Comm: (udev-worker) Tainted: G W 7.2.0-virtme #1 PREEMPT(full) [ 11.972024][ T84] Tainted: [W]=WARN [ 11.972025][ T84] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 11.972026][ T84] Call Trace: [ 11.972028][ T84] [ 11.972030][ T84] dump_stack_lvl+0x6f/0xa0 [ 11.972036][ T84] __might_resched.cold+0x1fe/0x2c1 [ 11.972040][ T84] ? perf_trace_sched_switch+0x7c0/0x7c0 [ 11.972044][ T84] ? __kmalloc_noprof+0xdb/0x760 [ 11.972050][ T84] __kmalloc_noprof+0x443/0x760 [ 11.972052][ T84] ? alloc_buf.isra.0+0x4b/0x260 [ 11.972058][ T84] ? do_raw_spin_unlock+0x59/0x250 [ 11.972061][ T84] alloc_buf.isra.0+0x4b/0x260 [ 11.972065][ T84] put_chars+0x1e1/0x2f0 [ 11.972068][ T84] ? __send_to_port+0x420/0x420 [ 11.972074][ T84] ? printk_get_next_message+0x2fe/0x7d0 [ 11.972077][ T84] ? rcu_read_lock_any_held+0x3c/0x90 [ 11.972080][ T84] ? validate_chain+0x38b/0xc20 [ 11.972085][ T84] hvc_console_print+0x292/0x780 [ 11.972089][ T84] ? __lock_acquire+0x518/0xc20 [ 11.972090][ T84] ? __lock_acquire+0x518/0xc20 [ 11.972094][ T84] ? hvc_write+0x3a0/0x3a0 [ 11.972098][ T84] ? rcu_is_watching+0x16/0xd0 [ 11.972102][ T84] ? lock_acquire+0x13c/0x160 [ 11.972105][ T84] console_emit_next_record+0x252/0x4f0 [ 11.972109][ T84] ? devkmsg_read+0x4e0/0x4e0 [ 11.972113][ T84] ? rcu_is_watching+0x16/0xd0 [ 11.972116][ T84] ? lock_acquire+0x13c/0x160 [ 11.972119][ T84] console_flush_one_record+0x46f/0x710 [ 11.972123][ T84] ? console_emit_next_record+0x4f0/0x4f0 [ 11.972125][ T84] ? __lock_acquire+0x518/0xc20 [ 11.972130][ T84] console_unlock+0xee/0x1f0 [ 11.972133][ T84] ? console_flush_one_record+0x710/0x710 [ 11.972134][ T84] ? rcu_is_watching+0x16/0xd0 [ 11.972137][ T84] ? lock_acquire+0xa0/0x160 [ 11.972140][ T84] ? __down_trylock_console_sem+0x5e/0xa0 [ 11.972142][ T84] ? vprintk_emit+0x320/0x3e0 [ 11.972145][ T84] vprintk_emit+0x37c/0x3e0 [ 11.972149][ T84] ? wake_up_klogd_work_func+0x90/0x90 [ 11.972152][ T84] ? __lock_acquire+0x518/0xc20 [ 11.972155][ T84] _printk+0xc7/0x100 [ 11.972159][ T84] ? snapshot_read.cold+0x21/0x21 [ 11.972162][ T84] ? do_raw_spin_lock+0x131/0x280 [ 11.972164][ T84] ? __rwlock_init+0x150/0x150 [ 11.972168][ T84] ? do_raw_spin_lock+0x131/0x280 [ 11.972171][ T84] do_exit.cold+0x82/0x9c [ 11.972174][ T84] ? exit_notify+0x890/0x890 [ 11.972176][ T84] ? __lock_release.isra.0+0x69/0x1a0 [ 11.972178][ T84] ? rcu_is_watching+0x16/0xd0 [ 11.972182][ T84] do_group_exit+0xb8/0x370 [ 11.972185][ T84] __x64_sys_exit_group+0x3c/0x50 [ 11.972186][ T84] x64_sys_call+0x1567/0x1570 [ 11.972188][ T84] do_syscall_64+0xff/0x530 [ 11.972192][ T84] ? exc_page_fault+0xee/0x100 [ 11.972195][ T84] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 11.972197][ T84] RIP: 0033:0x7f4f39ae31b8 [ 11.972199][ T84] Code: Unable to access opcode bytes at 0x7f4f39ae318e. [ 11.972200][ T84] RSP: 002b:00007ffdcbec6318 EFLAGS: 00000256 ORIG_RAX: 00000000000000e7 [ 11.972203][ T84] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f4f39ae31b8 [ 11.972204][ T84] RDX: 0000000000000000 RSI: fffffffffffffe90 RDI: 0000000000000000 [ 11.972205][ T84] RBP: 00007ffdcbec64a0 R08: 000056087ff7c548 R09: 0000000000000000 [ 11.972206][ T84] R10: 0000000000000000 R11: 0000000000000256 R12: 0000000000000000 [ 11.972206][ T84] R13: 00007f4f39341050 R14: 00007f4f3a014d9e R15: 000056087fe27550 [ 11.972213][ T84]