[ 39.519470][ T200] (udev-worker) (200) used greatest stack depth: 22696 bytes left [ 39.519491][ T200] BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:322 [ 39.519493][ T200] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 200, name: (udev-worker) [ 39.519494][ T200] preempt_count: 2, expected: 0 [ 39.519495][ T200] RCU nest depth: 0, expected: 0 [ 39.519496][ T200] locks held by (udev-worker)/200: 5, last CPU#1: [ 39.519498][ T200] #0: ffffffffa36167b8 (low_water_lock){+.+.}-{3:3}, at: do_exit+0x887/0xdc0 [ 39.519509][ T200] #1: ffffffffa377ddc0 (console_lock){+.+.}-{0:0}, at: vprintk_emit+0x320/0x3e0 [ 39.519514][ T200] #2: ffffffffa377de38 (console_srcu){....}-{0:0}, at: console_flush_one_record+0x106/0x710 [ 39.519518][ T200] #3: ffffffffa369d760 (console_owner){....}-{0:0}, at: console_lock_spinning_enable+0x40/0x60 [ 39.519522][ T200] #4: ffffffffa369d660 (printk_legacy_map-wait-type-override){....}-{3:3}, at: console_emit_next_record+0x1df/0x4c0 [ 39.519526][ T200] irq event stamp: 4976026 [ 39.519527][ T200] hardirqs last enabled at (4976025): [] __down_trylock_console_sem+0x86/0xa0 [ 39.519530][ T200] hardirqs last disabled at (4976026): [] console_emit_next_record+0x3d4/0x4c0 [ 39.519532][ T200] softirqs last enabled at (4975956): [] netlink_release+0x17b/0xcf0 [ 39.519536][ T200] softirqs last disabled at (4975954): [] netlink_release+0xd2/0xcf0 [ 39.519539][ T200] Preemption disabled at: [ 39.519539][ T200] [<0000000000000000>] 0x0 [ 39.519547][ T200] CPU: 1 UID: 0 PID: 200 Comm: (udev-worker) Tainted: G W 7.2.0-virtme #1 PREEMPT(full) [ 39.519550][ T200] Tainted: [W]=WARN [ 39.519551][ T200] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 39.519553][ T200] Call Trace: [ 39.519554][ T200] [ 39.519556][ T200] dump_stack_lvl+0x6f/0xa0 [ 39.519563][ T200] __might_resched.cold+0x1fe/0x2c1 [ 39.519567][ T200] ? perf_trace_sched_switch+0x7c0/0x7c0 [ 39.519571][ T200] ? __kmalloc_noprof+0xdb/0x760 [ 39.519576][ T200] __kmalloc_noprof+0x443/0x760 [ 39.519577][ T200] ? alloc_buf.isra.0+0x4b/0x260 [ 39.519584][ T200] ? do_raw_spin_unlock+0x59/0x250 [ 39.519586][ T200] alloc_buf.isra.0+0x4b/0x260 [ 39.519590][ T200] put_chars+0x1e1/0x2f0 [ 39.519593][ T200] ? __send_to_port+0x420/0x420 [ 39.519594][ T200] ? rcu_lockdep_current_cpu_online+0x3f/0x1b0 [ 39.519597][ T200] ? validate_chain+0x38b/0xc20 [ 39.519603][ T200] hvc_console_print+0x292/0x780 [ 39.519610][ T200] ? hvc_write+0x3a0/0x3a0 [ 39.519613][ T200] ? rcu_is_watching+0x16/0xd0 [ 39.519615][ T200] ? lock_acquire+0x13c/0x160 [ 39.519619][ T200] console_emit_next_record+0x22f/0x4c0 [ 39.519622][ T200] ? devkmsg_read+0x4b0/0x4b0 [ 39.519624][ T200] ? console_flush_one_record+0x106/0x710 [ 39.519627][ T200] ? rcu_is_watching+0x16/0xd0 [ 39.519629][ T200] ? lock_acquire+0x13c/0x160 [ 39.519633][ T200] console_flush_one_record+0x46f/0x710 [ 39.519637][ T200] ? console_emit_next_record+0x4c0/0x4c0 [ 39.519639][ T200] ? __lock_acquire+0x518/0xc20 [ 39.519644][ T200] console_unlock+0xee/0x1f0 [ 39.519647][ T200] ? console_flush_one_record+0x710/0x710 [ 39.519649][ T200] ? rcu_is_watching+0x16/0xd0 [ 39.519650][ T200] ? lock_acquire+0xe0/0x160 [ 39.519654][ T200] ? __down_trylock_console_sem+0x5e/0xa0 [ 39.519655][ T200] ? vprintk_emit+0x320/0x3e0 [ 39.519658][ T200] vprintk_emit+0x37c/0x3e0 [ 39.519661][ T200] ? wake_up_klogd_work_func+0x90/0x90 [ 39.519664][ T200] ? __lock_acquire+0x518/0xc20 [ 39.519668][ T200] _printk+0xc7/0x100 [ 39.519671][ T200] ? snapshot_read.cold+0x21/0x21 [ 39.519674][ T200] ? do_raw_spin_lock+0x131/0x280 [ 39.519676][ T200] ? __rwlock_init+0x150/0x150 [ 39.519680][ T200] ? do_raw_spin_lock+0x131/0x280 [ 39.519683][ T200] do_exit.cold+0x82/0x9c [ 39.519687][ T200] ? exit_notify+0x890/0x890 [ 39.519688][ T200] ? __lock_release.isra.0+0x69/0x1a0 [ 39.519691][ T200] ? rcu_is_watching+0x16/0xd0 [ 39.519694][ T200] do_group_exit+0xb8/0x370 [ 39.519697][ T200] __x64_sys_exit_group+0x3c/0x50 [ 39.519698][ T200] x64_sys_call+0x1567/0x1570 [ 39.519701][ T200] do_syscall_64+0xff/0x530 [ 39.519705][ T200] ? exc_page_fault+0xee/0x100 [ 39.519708][ T200] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 39.519710][ T200] RIP: 0033:0x7f276abfa1b8 [ 39.519712][ T200] Code: Unable to access opcode bytes at 0x7f276abfa18e. [ 39.519713][ T200] RSP: 002b:00007ffcbb749068 EFLAGS: 00000256 ORIG_RAX: 00000000000000e7 [ 39.519716][ T200] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f276abfa1b8 [ 39.519717][ T200] RDX: 0000000000000000 RSI: fffffffffffffe90 RDI: 0000000000000000 [ 39.519718][ T200] RBP: 00007ffcbb7491f0 R08: 0000561113d7f9b8 R09: 0000000000000000 [ 39.519719][ T200] R10: 0000000000000000 R11: 0000000000000256 R12: 0000000000000000 [ 39.519719][ T200] R13: 00007f276a458050 R14: 00007f276b12bd9e R15: 0000561113d57980 [ 39.519726][ T200]