[ 13.384257][ T87] (udev-worker) (87) used greatest stack depth: 24320 bytes left [ 13.384277][ T87] BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:322 [ 13.384279][ T87] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 87, name: (udev-worker) [ 13.384281][ T87] preempt_count: 2, expected: 0 [ 13.384282][ T87] RCU nest depth: 0, expected: 0 [ 13.384282][ T87] locks held by (udev-worker)/87: 5, last CPU#3: [ 13.384285][ T87] #0: ffffffffa68027b8 (low_water_lock){+.+.}-{3:3}, at: do_exit+0x887/0xdc0 [ 13.384297][ T87] #1: ffffffffa6999cc0 (console_lock){+.+.}-{0:0}, at: vprintk_emit+0x320/0x3e0 [ 13.384302][ T87] #2: ffffffffa6999d38 (console_srcu){....}-{0:0}, at: console_flush_one_record+0x106/0x710 [ 13.384306][ T87] #3: ffffffffa6889660 (console_owner){....}-{0:0}, at: console_lock_spinning_enable+0x40/0x60 [ 13.384309][ T87] #4: ffffffffa6889560 (printk_legacy_map-wait-type-override){....}-{3:3}, at: console_emit_next_record+0x202/0x4f0 [ 13.384313][ T87] irq event stamp: 462510 [ 13.384314][ T87] hardirqs last enabled at (462509): [] __down_trylock_console_sem+0x86/0xa0 [ 13.384316][ T87] hardirqs last disabled at (462510): [] console_emit_next_record+0x3f8/0x4f0 [ 13.384318][ T87] softirqs last enabled at (462446): [] netlink_release+0x17b/0xcf0 [ 13.384322][ T87] softirqs last disabled at (462444): [] netlink_release+0xd2/0xcf0 [ 13.384325][ T87] Preemption disabled at: [ 13.384326][ T87] [<0000000000000000>] 0x0 [ 13.384333][ T87] CPU: 3 UID: 0 PID: 87 Comm: (udev-worker) Tainted: G W 7.2.0-virtme #1 PREEMPT(full) [ 13.384336][ T87] Tainted: [W]=WARN [ 13.384337][ T87] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 13.384339][ T87] Call Trace: [ 13.384340][ T87] [ 13.384342][ T87] dump_stack_lvl+0x6f/0xa0 [ 13.384348][ T87] __might_resched.cold+0x1fe/0x2c1 [ 13.384352][ T87] ? perf_trace_sched_switch+0x7c0/0x7c0 [ 13.384356][ T87] ? __kmalloc_noprof+0xdb/0x760 [ 13.384360][ T87] __kmalloc_noprof+0x443/0x760 [ 13.384362][ T87] ? alloc_buf.isra.0+0x4b/0x260 [ 13.384367][ T87] ? do_raw_spin_unlock+0x59/0x250 [ 13.384370][ T87] alloc_buf.isra.0+0x4b/0x260 [ 13.384373][ T87] put_chars+0x1e1/0x2f0 [ 13.384375][ T87] ? __send_to_port+0x420/0x420 [ 13.384377][ T87] ? printk_get_next_message+0x2fe/0x7d0 [ 13.384380][ T87] ? rcu_read_lock_any_held+0x3c/0x90 [ 13.384383][ T87] ? validate_chain+0x38b/0xc20 [ 13.384387][ T87] hvc_console_print+0x292/0x780 [ 13.384389][ T87] ? __lock_acquire+0x518/0xc20 [ 13.384391][ T87] ? __lock_acquire+0x518/0xc20 [ 13.384395][ T87] ? hvc_write+0x3a0/0x3a0 [ 13.384398][ T87] ? rcu_is_watching+0x16/0xd0 [ 13.384401][ T87] ? lock_acquire+0x13c/0x160 [ 13.384404][ T87] console_emit_next_record+0x252/0x4f0 [ 13.384408][ T87] ? devkmsg_read+0x4e0/0x4e0 [ 13.384412][ T87] ? rcu_is_watching+0x16/0xd0 [ 13.384414][ T87] ? lock_acquire+0x13c/0x160 [ 13.384417][ T87] console_flush_one_record+0x46f/0x710 [ 13.384421][ T87] ? console_emit_next_record+0x4f0/0x4f0 [ 13.384423][ T87] ? __lock_acquire+0x518/0xc20 [ 13.384427][ T87] console_unlock+0xee/0x1f0 [ 13.384430][ T87] ? console_flush_one_record+0x710/0x710 [ 13.384431][ T87] ? rcu_is_watching+0x16/0xd0 [ 13.384433][ T87] ? lock_acquire+0x60/0x160 [ 13.384437][ T87] ? __down_trylock_console_sem+0x5e/0xa0 [ 13.384438][ T87] ? vprintk_emit+0x320/0x3e0 [ 13.384441][ T87] vprintk_emit+0x37c/0x3e0 [ 13.384445][ T87] ? wake_up_klogd_work_func+0x90/0x90 [ 13.384448][ T87] ? __lock_acquire+0x518/0xc20 [ 13.384451][ T87] _printk+0xc7/0x100 [ 13.384455][ T87] ? snapshot_read.cold+0x21/0x21 [ 13.384457][ T87] ? do_raw_spin_lock+0x131/0x280 [ 13.384460][ T87] ? __rwlock_init+0x150/0x150 [ 13.384463][ T87] ? do_raw_spin_lock+0x131/0x280 [ 13.384466][ T87] do_exit.cold+0x82/0x9c [ 13.384469][ T87] ? exit_notify+0x890/0x890 [ 13.384471][ T87] ? __lock_release.isra.0+0x69/0x1a0 [ 13.384473][ T87] ? rcu_is_watching+0x16/0xd0 [ 13.384477][ T87] do_group_exit+0xb8/0x370 [ 13.384480][ T87] __x64_sys_exit_group+0x3c/0x50 [ 13.384483][ T87] x64_sys_call+0x1567/0x1570 [ 13.384485][ T87] do_syscall_64+0xff/0x530 [ 13.384488][ T87] ? exc_page_fault+0xee/0x100 [ 13.384491][ T87] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 13.384493][ T87] RIP: 0033:0x7f3b001971b8 [ 13.384495][ T87] Code: Unable to access opcode bytes at 0x7f3b0019718e. [ 13.384496][ T87] RSP: 002b:00007fff28e3ccd8 EFLAGS: 00000256 ORIG_RAX: 00000000000000e7 [ 13.384499][ T87] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f3b001971b8 [ 13.384500][ T87] RDX: 0000000000000000 RSI: fffffffffffffe90 RDI: 0000000000000000 [ 13.384501][ T87] RBP: 00007fff28e3ce60 R08: 000055a67e8e4bb8 R09: 0000000000000000 [ 13.384502][ T87] R10: 0000000000000000 R11: 0000000000000256 R12: 0000000000000000 [ 13.384503][ T87] R13: 00007f3aff9f5050 R14: 00007f3b006c8d9e R15: 000055a67e78d1f0 [ 13.384509][ T87] [ 49.332959][ T110] su (110) used greatest stack depth: 23496 bytes left