[ 15.688115][ T87] (udev-worker) (87) used greatest stack depth: 22696 bytes left [ 15.688134][ T87] BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:322 [ 15.688136][ T87] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 87, name: (udev-worker) [ 15.688138][ T87] preempt_count: 2, expected: 0 [ 15.688139][ T87] RCU nest depth: 0, expected: 0 [ 15.688140][ T87] locks held by (udev-worker)/87: 5, last CPU#3: [ 15.688142][ T87] #0: ffffffff9ac027b8 (low_water_lock){+.+.}-{3:3}, at: do_exit+0x887/0xdc0 [ 15.688154][ T87] #1: ffffffff9ad99cc0 (console_lock){+.+.}-{0:0}, at: vprintk_emit+0x320/0x3e0 [ 15.688160][ T87] #2: ffffffff9ad99d38 (console_srcu){....}-{0:0}, at: console_flush_one_record+0x106/0x710 [ 15.688164][ T87] #3: ffffffff9ac89660 (console_owner){....}-{0:0}, at: console_lock_spinning_enable+0x40/0x60 [ 15.688168][ T87] #4: ffffffff9ac89560 (printk_legacy_map-wait-type-override){....}-{3:3}, at: console_emit_next_record+0x202/0x4f0 [ 15.688172][ T87] irq event stamp: 821096 [ 15.688173][ T87] hardirqs last enabled at (821095): [] __down_trylock_console_sem+0x86/0xa0 [ 15.688175][ T87] hardirqs last disabled at (821096): [] console_emit_next_record+0x3f8/0x4f0 [ 15.688177][ T87] softirqs last enabled at (821064): [] handle_softirqs+0x67c/0x900 [ 15.688180][ T87] softirqs last disabled at (819729): [] __irq_exit_rcu+0x145/0x1c0 [ 15.688183][ T87] Preemption disabled at: [ 15.688183][ T87] [<0000000000000000>] 0x0 [ 15.688190][ T87] CPU: 3 UID: 0 PID: 87 Comm: (udev-worker) Tainted: G W 7.2.0-virtme #1 PREEMPT(full) [ 15.688194][ T87] Tainted: [W]=WARN [ 15.688195][ T87] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 15.688197][ T87] Call Trace: [ 15.688198][ T87] [ 15.688200][ T87] dump_stack_lvl+0x6f/0xa0 [ 15.688206][ T87] __might_resched.cold+0x1fe/0x2c1 [ 15.688211][ T87] ? perf_trace_sched_switch+0x7c0/0x7c0 [ 15.688215][ T87] ? __kmalloc_noprof+0xdb/0x760 [ 15.688219][ T87] __kmalloc_noprof+0x443/0x760 [ 15.688222][ T87] ? alloc_buf.isra.0+0x4b/0x260 [ 15.688227][ T87] ? do_raw_spin_unlock+0x59/0x250 [ 15.688230][ T87] alloc_buf.isra.0+0x4b/0x260 [ 15.688233][ T87] put_chars+0x1e1/0x2f0 [ 15.688236][ T87] ? __send_to_port+0x420/0x420 [ 15.688238][ T87] ? printk_get_next_message+0x2fe/0x7d0 [ 15.688241][ T87] ? rcu_read_lock_any_held+0x3c/0x90 [ 15.688244][ T87] ? validate_chain+0x38b/0xc20 [ 15.688248][ T87] hvc_console_print+0x292/0x780 [ 15.688251][ T87] ? __lock_acquire+0x518/0xc20 [ 15.688253][ T87] ? __lock_acquire+0x518/0xc20 [ 15.688257][ T87] ? hvc_write+0x3a0/0x3a0 [ 15.688261][ T87] ? rcu_is_watching+0x16/0xd0 [ 15.688263][ T87] ? lock_acquire+0x13c/0x160 [ 15.688268][ T87] console_emit_next_record+0x252/0x4f0 [ 15.688271][ T87] ? devkmsg_read+0x4e0/0x4e0 [ 15.688276][ T87] ? rcu_is_watching+0x16/0xd0 [ 15.688278][ T87] ? lock_acquire+0x13c/0x160 [ 15.688282][ T87] console_flush_one_record+0x46f/0x710 [ 15.688286][ T87] ? console_emit_next_record+0x4f0/0x4f0 [ 15.688288][ T87] ? __lock_acquire+0x518/0xc20 [ 15.688294][ T87] console_unlock+0xee/0x1f0 [ 15.688296][ T87] ? console_flush_one_record+0x710/0x710 [ 15.688298][ T87] ? rcu_is_watching+0x16/0xd0 [ 15.688300][ T87] ? lock_acquire+0x60/0x160 [ 15.688304][ T87] ? __down_trylock_console_sem+0x5e/0xa0 [ 15.688305][ T87] ? vprintk_emit+0x320/0x3e0 [ 15.688309][ T87] vprintk_emit+0x37c/0x3e0 [ 15.688313][ T87] ? wake_up_klogd_work_func+0x90/0x90 [ 15.688316][ T87] ? __lock_acquire+0x518/0xc20 [ 15.688320][ T87] _printk+0xc7/0x100 [ 15.688324][ T87] ? snapshot_read.cold+0x21/0x21 [ 15.688327][ T87] ? do_raw_spin_lock+0x131/0x280 [ 15.688329][ T87] ? __rwlock_init+0x150/0x150 [ 15.688333][ T87] ? do_raw_spin_lock+0x131/0x280 [ 15.688336][ T87] do_exit.cold+0x82/0x9c [ 15.688340][ T87] ? exit_notify+0x890/0x890 [ 15.688341][ T87] ? __lock_release.isra.0+0x69/0x1a0 [ 15.688344][ T87] ? rcu_is_watching+0x16/0xd0 [ 15.688348][ T87] do_group_exit+0xb8/0x370 [ 15.688352][ T87] __x64_sys_exit_group+0x3c/0x50 [ 15.688354][ T87] x64_sys_call+0x1567/0x1570 [ 15.688356][ T87] do_syscall_64+0xff/0x530 [ 15.688360][ T87] ? common_interrupt+0x5a/0xf0 [ 15.688363][ T87] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 15.688365][ T87] RIP: 0033:0x7fde912df1b8 [ 15.688368][ T87] Code: Unable to access opcode bytes at 0x7fde912df18e. [ 15.688369][ T87] RSP: 002b:00007ffdb3c68138 EFLAGS: 00000256 ORIG_RAX: 00000000000000e7 [ 15.688371][ T87] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fde912df1b8 [ 15.688373][ T87] RDX: 0000000000000000 RSI: fffffffffffffe90 RDI: 0000000000000000 [ 15.688378][ T87] RBP: 00007ffdb3c682c0 R08: 0000562306455c78 R09: 0000000000000000 [ 15.688379][ T87] R10: 0000000000000000 R11: 0000000000000256 R12: 0000000000000000 [ 15.688379][ T87] R13: 00007fde90b3d050 R14: 00007fde91810d9e R15: 00005623062f2ab0 [ 15.688387][ T87]