[ 16.523852][ T182] (udev-worker) (182) used greatest stack depth: 22696 bytes left [ 16.523874][ T182] BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:322 [ 16.523876][ T182] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 182, name: (udev-worker) [ 16.523878][ T182] preempt_count: 2, expected: 0 [ 16.523878][ T182] RCU nest depth: 0, expected: 0 [ 16.523879][ T182] locks held by (udev-worker)/182: 5, last CPU#2: [ 16.523882][ T182] #0: ffffffff898027b8 (low_water_lock){+.+.}-{3:3}, at: do_exit+0x887/0xdc0 [ 16.523894][ T182] #1: ffffffff89999cc0 (console_lock){+.+.}-{0:0}, at: vprintk_emit+0x320/0x3e0 [ 16.523899][ T182] #2: ffffffff89999d38 (console_srcu){....}-{0:0}, at: console_flush_one_record+0x106/0x710 [ 16.523904][ T182] #3: ffffffff89889660 (console_owner){....}-{0:0}, at: console_lock_spinning_enable+0x40/0x60 [ 16.523908][ T182] #4: ffffffff89889560 (printk_legacy_map-wait-type-override){....}-{3:3}, at: console_emit_next_record+0x202/0x4f0 [ 16.523912][ T182] irq event stamp: 489484 [ 16.523913][ T182] hardirqs last enabled at (489483): [] __down_trylock_console_sem+0x86/0xa0 [ 16.523916][ T182] hardirqs last disabled at (489484): [] console_emit_next_record+0x3f8/0x4f0 [ 16.523918][ T182] softirqs last enabled at (489418): [] netlink_release+0x17b/0xcf0 [ 16.523923][ T182] softirqs last disabled at (489416): [] netlink_release+0xd2/0xcf0 [ 16.523926][ T182] Preemption disabled at: [ 16.523926][ T182] [<0000000000000000>] 0x0 [ 16.523933][ T182] CPU: 2 UID: 0 PID: 182 Comm: (udev-worker) Tainted: G W 7.2.0-virtme #1 PREEMPT(full) [ 16.523937][ T182] Tainted: [W]=WARN [ 16.523938][ T182] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 16.523939][ T182] Call Trace: [ 16.523941][ T182] [ 16.523942][ T182] dump_stack_lvl+0x6f/0xa0 [ 16.523948][ T182] __might_resched.cold+0x1fe/0x2c1 [ 16.523953][ T182] ? perf_trace_sched_switch+0x7c0/0x7c0 [ 16.523957][ T182] ? __kmalloc_noprof+0xdb/0x760 [ 16.523963][ T182] __kmalloc_noprof+0x443/0x760 [ 16.523966][ T182] ? alloc_buf.isra.0+0x4b/0x260 [ 16.523972][ T182] ? do_raw_spin_unlock+0x59/0x250 [ 16.523975][ T182] alloc_buf.isra.0+0x4b/0x260 [ 16.523979][ T182] put_chars+0x1e1/0x2f0 [ 16.523982][ T182] ? __send_to_port+0x420/0x420 [ 16.523984][ T182] ? printk_get_next_message+0x2fe/0x7d0 [ 16.523988][ T182] ? rcu_read_lock_any_held+0x3c/0x90 [ 16.523991][ T182] ? validate_chain+0x38b/0xc20 [ 16.523996][ T182] hvc_console_print+0x292/0x780 [ 16.523999][ T182] ? __lock_acquire+0x518/0xc20 [ 16.524001][ T182] ? __lock_acquire+0x518/0xc20 [ 16.524006][ T182] ? hvc_write+0x3a0/0x3a0 [ 16.524009][ T182] ? rcu_is_watching+0x16/0xd0 [ 16.524012][ T182] ? lock_acquire+0x13c/0x160 [ 16.524016][ T182] console_emit_next_record+0x252/0x4f0 [ 16.524020][ T182] ? devkmsg_read+0x4e0/0x4e0 [ 16.524025][ T182] ? rcu_is_watching+0x16/0xd0 [ 16.524027][ T182] ? lock_acquire+0x13c/0x160 [ 16.524031][ T182] console_flush_one_record+0x46f/0x710 [ 16.524036][ T182] ? console_emit_next_record+0x4f0/0x4f0 [ 16.524038][ T182] ? __lock_acquire+0x518/0xc20 [ 16.524044][ T182] console_unlock+0xee/0x1f0 [ 16.524047][ T182] ? console_flush_one_record+0x710/0x710 [ 16.524049][ T182] ? rcu_is_watching+0x16/0xd0 [ 16.524051][ T182] ? lock_acquire+0x60/0x160 [ 16.524055][ T182] ? __down_trylock_console_sem+0x5e/0xa0 [ 16.524057][ T182] ? vprintk_emit+0x320/0x3e0 [ 16.524059][ T182] vprintk_emit+0x37c/0x3e0 [ 16.524063][ T182] ? wake_up_klogd_work_func+0x90/0x90 [ 16.524066][ T182] ? __lock_acquire+0x518/0xc20 [ 16.524070][ T182] _printk+0xc7/0x100 [ 16.524074][ T182] ? snapshot_read.cold+0x21/0x21 [ 16.524077][ T182] ? do_raw_spin_lock+0x131/0x280 [ 16.524080][ T182] ? __rwlock_init+0x150/0x150 [ 16.524084][ T182] ? do_raw_spin_lock+0x131/0x280 [ 16.524087][ T182] do_exit.cold+0x82/0x9c [ 16.524090][ T182] ? exit_notify+0x890/0x890 [ 16.524092][ T182] ? __lock_release.isra.0+0x69/0x1a0 [ 16.524095][ T182] ? rcu_is_watching+0x16/0xd0 [ 16.524099][ T182] do_group_exit+0xb8/0x370 [ 16.524102][ T182] __x64_sys_exit_group+0x3c/0x50 [ 16.524104][ T182] x64_sys_call+0x1567/0x1570 [ 16.524106][ T182] do_syscall_64+0xff/0x530 [ 16.524110][ T182] ? exc_page_fault+0xee/0x100 [ 16.524113][ T182] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 16.524115][ T182] RIP: 0033:0x7f3451e641b8 [ 16.524118][ T182] Code: Unable to access opcode bytes at 0x7f3451e6418e. [ 16.524119][ T182] RSP: 002b:00007ffc39740228 EFLAGS: 00000256 ORIG_RAX: 00000000000000e7 [ 16.524121][ T182] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f3451e641b8 [ 16.524123][ T182] RDX: 0000000000000000 RSI: fffffffffffffe90 RDI: 0000000000000000 [ 16.524124][ T182] RBP: 00007ffc397403b0 R08: 00005588c1df4fc8 R09: 0000000000000000 [ 16.524125][ T182] R10: 0000000000000000 R11: 0000000000000256 R12: 0000000000000000 [ 16.524125][ T182] R13: 00007f34516c2050 R14: 00007f3452395d9e R15: 00005588c1c8c090 [ 16.524133][ T182]