[ 13.417871][ T87] (udev-worker) (87) used greatest stack depth: 22696 bytes left [ 13.417889][ T87] BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:322 [ 13.417891][ T87] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 87, name: (udev-worker) [ 13.417893][ T87] preempt_count: 2, expected: 0 [ 13.417893][ T87] RCU nest depth: 0, expected: 0 [ 13.417895][ T87] locks held by (udev-worker)/87: 5, last CPU#1: [ 13.417897][ T87] #0: ffffffffa60027b8 (low_water_lock){+.+.}-{3:3}, at: do_exit+0x887/0xdc0 [ 13.417908][ T87] #1: ffffffffa6199dc0 (console_lock){+.+.}-{0:0}, at: vprintk_emit+0x320/0x3e0 [ 13.417914][ T87] #2: ffffffffa6199e38 (console_srcu){....}-{0:0}, at: console_flush_one_record+0x106/0x710 [ 13.417918][ T87] #3: ffffffffa6089760 (console_owner){....}-{0:0}, at: console_lock_spinning_enable+0x40/0x60 [ 13.417922][ T87] #4: ffffffffa6089660 (printk_legacy_map-wait-type-override){....}-{3:3}, at: console_emit_next_record+0x202/0x4f0 [ 13.417927][ T87] irq event stamp: 472314 [ 13.417928][ T87] hardirqs last enabled at (472313): [] __down_trylock_console_sem+0x86/0xa0 [ 13.417930][ T87] hardirqs last disabled at (472314): [] console_emit_next_record+0x3f8/0x4f0 [ 13.417932][ T87] softirqs last enabled at (472250): [] netlink_release+0x17b/0xcf0 [ 13.417937][ T87] softirqs last disabled at (472248): [] netlink_release+0xd2/0xcf0 [ 13.417940][ T87] Preemption disabled at: [ 13.417940][ T87] [<0000000000000000>] 0x0 [ 13.417947][ T87] CPU: 1 UID: 0 PID: 87 Comm: (udev-worker) Tainted: G W 7.2.0-virtme #1 PREEMPT(full) [ 13.417951][ T87] Tainted: [W]=WARN [ 13.417952][ T87] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 13.417956][ T87] Call Trace: [ 13.417958][ T87] [ 13.417959][ T87] dump_stack_lvl+0x6f/0xa0 [ 13.417966][ T87] __might_resched.cold+0x1fe/0x2c1 [ 13.417971][ T87] ? perf_trace_sched_switch+0x7c0/0x7c0 [ 13.417975][ T87] ? __kmalloc_noprof+0xdb/0x760 [ 13.417980][ T87] __kmalloc_noprof+0x443/0x760 [ 13.417983][ T87] ? alloc_buf.isra.0+0x4b/0x260 [ 13.417989][ T87] ? do_raw_spin_unlock+0x59/0x250 [ 13.417992][ T87] alloc_buf.isra.0+0x4b/0x260 [ 13.417996][ T87] put_chars+0x1e1/0x2f0 [ 13.418000][ T87] ? __send_to_port+0x420/0x420 [ 13.418002][ T87] ? printk_get_next_message+0x2fe/0x7d0 [ 13.418005][ T87] ? rcu_read_lock_any_held+0x3c/0x90 [ 13.418009][ T87] ? validate_chain+0x38b/0xc20 [ 13.418013][ T87] hvc_console_print+0x292/0x780 [ 13.418017][ T87] ? __lock_acquire+0x518/0xc20 [ 13.418018][ T87] ? __lock_acquire+0x518/0xc20 [ 13.418023][ T87] ? hvc_write+0x3a0/0x3a0 [ 13.418027][ T87] ? rcu_is_watching+0x16/0xd0 [ 13.418030][ T87] ? lock_acquire+0x13c/0x160 [ 13.418034][ T87] console_emit_next_record+0x252/0x4f0 [ 13.418038][ T87] ? devkmsg_read+0x4e0/0x4e0 [ 13.418043][ T87] ? rcu_is_watching+0x16/0xd0 [ 13.418045][ T87] ? lock_acquire+0x13c/0x160 [ 13.418049][ T87] console_flush_one_record+0x46f/0x710 [ 13.418053][ T87] ? console_emit_next_record+0x4f0/0x4f0 [ 13.418055][ T87] ? __lock_acquire+0x518/0xc20 [ 13.418060][ T87] console_unlock+0xee/0x1f0 [ 13.418063][ T87] ? console_flush_one_record+0x710/0x710 [ 13.418065][ T87] ? rcu_is_watching+0x16/0xd0 [ 13.418068][ T87] ? lock_acquire+0xa0/0x160 [ 13.418071][ T87] ? __down_trylock_console_sem+0x5e/0xa0 [ 13.418073][ T87] ? vprintk_emit+0x320/0x3e0 [ 13.418077][ T87] vprintk_emit+0x37c/0x3e0 [ 13.418080][ T87] ? wake_up_klogd_work_func+0x90/0x90 [ 13.418084][ T87] ? __lock_acquire+0x518/0xc20 [ 13.418088][ T87] _printk+0xc7/0x100 [ 13.418091][ T87] ? snapshot_read.cold+0x21/0x21 [ 13.418094][ T87] ? do_raw_spin_lock+0x131/0x280 [ 13.418097][ T87] ? __rwlock_init+0x150/0x150 [ 13.418101][ T87] ? do_raw_spin_lock+0x131/0x280 [ 13.418103][ T87] do_exit.cold+0x82/0x9c [ 13.418107][ T87] ? exit_notify+0x890/0x890 [ 13.418108][ T87] ? __lock_release.isra.0+0x69/0x1a0 [ 13.418111][ T87] ? rcu_is_watching+0x16/0xd0 [ 13.418115][ T87] do_group_exit+0xb8/0x370 [ 13.418118][ T87] __x64_sys_exit_group+0x3c/0x50 [ 13.418120][ T87] x64_sys_call+0x1567/0x1570 [ 13.418122][ T87] do_syscall_64+0xff/0x530 [ 13.418125][ T87] ? irq_exit_rcu+0x1a/0x30 [ 13.418129][ T87] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 13.418131][ T87] RIP: 0033:0x7fbe3e6841b8 [ 13.418133][ T87] Code: Unable to access opcode bytes at 0x7fbe3e68418e. [ 13.418134][ T87] RSP: 002b:00007ffe92d1e1f8 EFLAGS: 00000256 ORIG_RAX: 00000000000000e7 [ 13.418137][ T87] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fbe3e6841b8 [ 13.418138][ T87] RDX: 0000000000000000 RSI: fffffffffffffe90 RDI: 0000000000000000 [ 13.418139][ T87] RBP: 00007ffe92d1e380 R08: 0000556203d08458 R09: 0000000000000000 [ 13.418140][ T87] R10: 0000000000000000 R11: 0000000000000256 R12: 0000000000000000 [ 13.418141][ T87] R13: 00007fbe3dee2050 R14: 00007fbe3ebb5d9e R15: 0000556203b8b870 [ 13.418148][ T87]