[ 13.682590][ T87] (udev-worker) (87) used greatest stack depth: 22696 bytes left [ 13.682610][ T87] BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:322 [ 13.682612][ T87] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 87, name: (udev-worker) [ 13.682614][ T87] preempt_count: 2, expected: 0 [ 13.682615][ T87] RCU nest depth: 0, expected: 0 [ 13.682616][ T87] locks held by (udev-worker)/87: 5, last CPU#3: [ 13.682618][ T87] #0: ffffffff98e027b8 (low_water_lock){+.+.}-{3:3}, at: do_exit+0x887/0xdc0 [ 13.682631][ T87] #1: ffffffff98f69cc0 (console_lock){+.+.}-{0:0}, at: vprintk_emit+0x320/0x3e0 [ 13.682637][ T87] #2: ffffffff98f69d38 (console_srcu){....}-{0:0}, at: console_flush_one_record+0x106/0x710 [ 13.682641][ T87] #3: ffffffff98e89660 (console_owner){....}-{0:0}, at: console_lock_spinning_enable+0x40/0x60 [ 13.682644][ T87] #4: ffffffff98e89560 (printk_legacy_map-wait-type-override){....}-{3:3}, at: console_emit_next_record+0x1df/0x4c0 [ 13.682648][ T87] irq event stamp: 498152 [ 13.682649][ T87] hardirqs last enabled at (498151): [] __down_trylock_console_sem+0x86/0xa0 [ 13.682652][ T87] hardirqs last disabled at (498152): [] console_emit_next_record+0x3d4/0x4c0 [ 13.682653][ T87] softirqs last enabled at (498088): [] netlink_release+0x17b/0xcf0 [ 13.682658][ T87] softirqs last disabled at (498086): [] netlink_release+0xd2/0xcf0 [ 13.682660][ T87] Preemption disabled at: [ 13.682661][ T87] [<0000000000000000>] 0x0 [ 13.682668][ T87] CPU: 3 UID: 0 PID: 87 Comm: (udev-worker) Tainted: G W 7.2.0-virtme #1 PREEMPT(full) [ 13.682671][ T87] Tainted: [W]=WARN [ 13.682672][ T87] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 13.682674][ T87] Call Trace: [ 13.682676][ T87] [ 13.682677][ T87] dump_stack_lvl+0x6f/0xa0 [ 13.682683][ T87] __might_resched.cold+0x1fe/0x2c1 [ 13.682688][ T87] ? perf_trace_sched_switch+0x7c0/0x7c0 [ 13.682692][ T87] ? __kmalloc_noprof+0xdb/0x760 [ 13.682697][ T87] __kmalloc_noprof+0x443/0x760 [ 13.682699][ T87] ? alloc_buf.isra.0+0x4b/0x260 [ 13.682705][ T87] ? do_raw_spin_unlock+0x59/0x250 [ 13.682708][ T87] alloc_buf.isra.0+0x4b/0x260 [ 13.682711][ T87] put_chars+0x1e1/0x2f0 [ 13.682714][ T87] ? __send_to_port+0x420/0x420 [ 13.682716][ T87] ? rcu_lockdep_current_cpu_online+0x3f/0x1b0 [ 13.682721][ T87] ? validate_chain+0x38b/0xc20 [ 13.682726][ T87] hvc_console_print+0x292/0x780 [ 13.682733][ T87] ? hvc_write+0x3a0/0x3a0 [ 13.682736][ T87] ? rcu_is_watching+0x16/0xd0 [ 13.682738][ T87] ? lock_acquire+0x13c/0x160 [ 13.682742][ T87] console_emit_next_record+0x22f/0x4c0 [ 13.682746][ T87] ? devkmsg_read+0x4b0/0x4b0 [ 13.682747][ T87] ? console_flush_one_record+0x106/0x710 [ 13.682750][ T87] ? rcu_is_watching+0x16/0xd0 [ 13.682753][ T87] ? lock_acquire+0x13c/0x160 [ 13.682756][ T87] console_flush_one_record+0x46f/0x710 [ 13.682760][ T87] ? console_emit_next_record+0x4c0/0x4c0 [ 13.682762][ T87] ? __lock_acquire+0x518/0xc20 [ 13.682767][ T87] console_unlock+0xee/0x1f0 [ 13.682770][ T87] ? console_flush_one_record+0x710/0x710 [ 13.682771][ T87] ? rcu_is_watching+0x16/0xd0 [ 13.682773][ T87] ? lock_acquire+0x60/0x160 [ 13.682777][ T87] ? __down_trylock_console_sem+0x5e/0xa0 [ 13.682778][ T87] ? vprintk_emit+0x320/0x3e0 [ 13.682781][ T87] vprintk_emit+0x37c/0x3e0 [ 13.682785][ T87] ? wake_up_klogd_work_func+0x90/0x90 [ 13.682788][ T87] ? __lock_acquire+0x518/0xc20 [ 13.682792][ T87] _printk+0xc7/0x100 [ 13.682795][ T87] ? snapshot_read.cold+0x21/0x21 [ 13.682798][ T87] ? do_raw_spin_lock+0x131/0x280 [ 13.682801][ T87] ? __rwlock_init+0x150/0x150 [ 13.682804][ T87] ? do_raw_spin_lock+0x131/0x280 [ 13.682807][ T87] do_exit.cold+0x82/0x9c [ 13.682811][ T87] ? exit_notify+0x890/0x890 [ 13.682812][ T87] ? __lock_release.isra.0+0x69/0x1a0 [ 13.682815][ T87] ? rcu_is_watching+0x16/0xd0 [ 13.682819][ T87] do_group_exit+0xb8/0x370 [ 13.682822][ T87] __x64_sys_exit_group+0x3c/0x50 [ 13.682825][ T87] x64_sys_call+0x1567/0x1570 [ 13.682827][ T87] do_syscall_64+0xff/0x530 [ 13.682831][ T87] ? irq_exit_rcu+0x1a/0x30 [ 13.682834][ T87] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 13.682836][ T87] RIP: 0033:0x7f588ec1a1b8 [ 13.682839][ T87] Code: Unable to access opcode bytes at 0x7f588ec1a18e. [ 13.682840][ T87] RSP: 002b:00007ffe617a4c18 EFLAGS: 00000256 ORIG_RAX: 00000000000000e7 [ 13.682843][ T87] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f588ec1a1b8 [ 13.682844][ T87] RDX: 0000000000000000 RSI: fffffffffffffe90 RDI: 0000000000000000 [ 13.682845][ T87] RBP: 00007ffe617a4da0 R08: 000055b96863e5d8 R09: 0000000000000000 [ 13.682846][ T87] R10: 0000000000000000 R11: 0000000000000256 R12: 0000000000000000 [ 13.682847][ T87] R13: 00007f588e478050 R14: 00007f588f14bd9e R15: 000055b968631370 [ 13.682854][ T87]