[ 39.069167][ T200] (udev-worker) (200) used greatest stack depth: 22696 bytes left [ 39.069185][ T200] BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:322 [ 39.069187][ T200] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 200, name: (udev-worker) [ 39.069189][ T200] preempt_count: 2, expected: 0 [ 39.069190][ T200] RCU nest depth: 0, expected: 0 [ 39.069190][ T200] locks held by (udev-worker)/200: 5, last CPU#2: [ 39.069192][ T200] #0: ffffffffb14167b8 (low_water_lock){+.+.}-{3:3}, at: do_exit+0x887/0xdc0 [ 39.069204][ T200] #1: ffffffffb157ddc0 (console_lock){+.+.}-{0:0}, at: vprintk_emit+0x320/0x3e0 [ 39.069209][ T200] #2: ffffffffb157de38 (console_srcu){....}-{0:0}, at: console_flush_one_record+0x106/0x710 [ 39.069213][ T200] #3: ffffffffb149d760 (console_owner){....}-{0:0}, at: console_lock_spinning_enable+0x40/0x60 [ 39.069217][ T200] #4: ffffffffb149d660 (printk_legacy_map-wait-type-override){....}-{3:3}, at: console_emit_next_record+0x1df/0x4c0 [ 39.069221][ T200] irq event stamp: 5083600 [ 39.069221][ T200] hardirqs last enabled at (5083599): [] __down_trylock_console_sem+0x86/0xa0 [ 39.069224][ T200] hardirqs last disabled at (5083600): [] console_emit_next_record+0x3d4/0x4c0 [ 39.069226][ T200] softirqs last enabled at (5083530): [] netlink_release+0x17b/0xcf0 [ 39.069230][ T200] softirqs last disabled at (5083528): [] netlink_release+0xd2/0xcf0 [ 39.069233][ T200] Preemption disabled at: [ 39.069234][ T200] [<0000000000000000>] 0x0 [ 39.069240][ T200] CPU: 2 UID: 0 PID: 200 Comm: (udev-worker) Tainted: G W 7.2.0-virtme #1 PREEMPT(full) [ 39.069244][ T200] Tainted: [W]=WARN [ 39.069244][ T200] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 39.069246][ T200] Call Trace: [ 39.069248][ T200] [ 39.069249][ T200] dump_stack_lvl+0x6f/0xa0 [ 39.069256][ T200] __might_resched.cold+0x1fe/0x2c1 [ 39.069260][ T200] ? perf_trace_sched_switch+0x7c0/0x7c0 [ 39.069264][ T200] ? __kmalloc_noprof+0xdb/0x760 [ 39.069268][ T200] __kmalloc_noprof+0x443/0x760 [ 39.069270][ T200] ? alloc_buf.isra.0+0x4b/0x260 [ 39.069276][ T200] ? do_raw_spin_unlock+0x59/0x250 [ 39.069279][ T200] alloc_buf.isra.0+0x4b/0x260 [ 39.069283][ T200] put_chars+0x1e1/0x2f0 [ 39.069285][ T200] ? __send_to_port+0x420/0x420 [ 39.069286][ T200] ? rcu_lockdep_current_cpu_online+0x3f/0x1b0 [ 39.069290][ T200] ? validate_chain+0x38b/0xc20 [ 39.069295][ T200] hvc_console_print+0x292/0x780 [ 39.069302][ T200] ? hvc_write+0x3a0/0x3a0 [ 39.069305][ T200] ? rcu_is_watching+0x16/0xd0 [ 39.069307][ T200] ? lock_acquire+0x13c/0x160 [ 39.069311][ T200] console_emit_next_record+0x22f/0x4c0 [ 39.069315][ T200] ? devkmsg_read+0x4b0/0x4b0 [ 39.069317][ T200] ? console_flush_one_record+0x106/0x710 [ 39.069320][ T200] ? rcu_is_watching+0x16/0xd0 [ 39.069321][ T200] ? lock_acquire+0x13c/0x160 [ 39.069325][ T200] console_flush_one_record+0x46f/0x710 [ 39.069329][ T200] ? console_emit_next_record+0x4c0/0x4c0 [ 39.069331][ T200] ? __lock_acquire+0x518/0xc20 [ 39.069336][ T200] console_unlock+0xee/0x1f0 [ 39.069339][ T200] ? console_flush_one_record+0x710/0x710 [ 39.069341][ T200] ? rcu_is_watching+0x16/0xd0 [ 39.069343][ T200] ? lock_acquire+0xe0/0x160 [ 39.069346][ T200] ? __down_trylock_console_sem+0x5e/0xa0 [ 39.069348][ T200] ? vprintk_emit+0x320/0x3e0 [ 39.069350][ T200] vprintk_emit+0x37c/0x3e0 [ 39.069353][ T200] ? wake_up_klogd_work_func+0x90/0x90 [ 39.069356][ T200] ? __lock_acquire+0x518/0xc20 [ 39.069360][ T200] _printk+0xc7/0x100 [ 39.069363][ T200] ? snapshot_read.cold+0x21/0x21 [ 39.069366][ T200] ? do_raw_spin_lock+0x131/0x280 [ 39.069369][ T200] ? __rwlock_init+0x150/0x150 [ 39.069372][ T200] ? do_raw_spin_lock+0x131/0x280 [ 39.069375][ T200] do_exit.cold+0x82/0x9c [ 39.069378][ T200] ? exit_notify+0x890/0x890 [ 39.069380][ T200] ? __lock_release.isra.0+0x69/0x1a0 [ 39.069383][ T200] ? rcu_is_watching+0x16/0xd0 [ 39.069386][ T200] do_group_exit+0xb8/0x370 [ 39.069389][ T200] __x64_sys_exit_group+0x3c/0x50 [ 39.069391][ T200] x64_sys_call+0x1567/0x1570 [ 39.069393][ T200] do_syscall_64+0xff/0x530 [ 39.069397][ T200] ? exc_page_fault+0xee/0x100 [ 39.069400][ T200] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 39.069402][ T200] RIP: 0033:0x7f9c374c51b8 [ 39.069404][ T200] Code: Unable to access opcode bytes at 0x7f9c374c518e. [ 39.069405][ T200] RSP: 002b:00007ffe0ada99d8 EFLAGS: 00000256 ORIG_RAX: 00000000000000e7 [ 39.069407][ T200] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f9c374c51b8 [ 39.069409][ T200] RDX: 0000000000000000 RSI: fffffffffffffe90 RDI: 0000000000000000 [ 39.069410][ T200] RBP: 00007ffe0ada9b60 R08: 000056232dda0b78 R09: 0000000000000000 [ 39.069410][ T200] R10: 0000000000000000 R11: 0000000000000256 R12: 0000000000000000 [ 39.069411][ T200] R13: 00007f9c36d23050 R14: 00007f9c379f6d9e R15: 000056232dc275f0 [ 39.069418][ T200]