[ 12.460620][ T85] (udev-worker) (85) used greatest stack depth: 22696 bytes left [ 12.460641][ T85] BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:322 [ 12.460643][ T85] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 85, name: (udev-worker) [ 12.460645][ T85] preempt_count: 2, expected: 0 [ 12.460646][ T85] RCU nest depth: 0, expected: 0 [ 12.460647][ T85] locks held by (udev-worker)/85: 5, last CPU#2: [ 12.460649][ T85] #0: ffffffff8f0027b8 (low_water_lock){+.+.}-{3:3}, at: do_exit+0x887/0xdc0 [ 12.460661][ T85] #1: ffffffff8f199dc0 (console_lock){+.+.}-{0:0}, at: vprintk_emit+0x320/0x3e0 [ 12.460667][ T85] #2: ffffffff8f199e38 (console_srcu){....}-{0:0}, at: console_flush_one_record+0x106/0x710 [ 12.460671][ T85] #3: ffffffff8f089760 (console_owner){....}-{0:0}, at: console_lock_spinning_enable+0x40/0x60 [ 12.460675][ T85] #4: ffffffff8f089660 (printk_legacy_map-wait-type-override){....}-{3:3}, at: console_emit_next_record+0x202/0x4f0 [ 12.460679][ T85] irq event stamp: 408728 [ 12.460680][ T85] hardirqs last enabled at (408727): [] __down_trylock_console_sem+0x86/0xa0 [ 12.460683][ T85] hardirqs last disabled at (408728): [] console_emit_next_record+0x3f8/0x4f0 [ 12.460685][ T85] softirqs last enabled at (408672): [] handle_softirqs+0x67c/0x900 [ 12.460687][ T85] softirqs last disabled at (406977): [] __irq_exit_rcu+0x145/0x1c0 [ 12.460689][ T85] Preemption disabled at: [ 12.460690][ T85] [<0000000000000000>] 0x0 [ 12.460697][ T85] CPU: 2 UID: 0 PID: 85 Comm: (udev-worker) Tainted: G W 7.2.0-virtme #1 PREEMPT(full) [ 12.460701][ T85] Tainted: [W]=WARN [ 12.460702][ T85] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 12.460703][ T85] Call Trace: [ 12.460705][ T85] [ 12.460706][ T85] dump_stack_lvl+0x6f/0xa0 [ 12.460713][ T85] __might_resched.cold+0x1fe/0x2c1 [ 12.460718][ T85] ? perf_trace_sched_switch+0x7c0/0x7c0 [ 12.460722][ T85] ? __kmalloc_noprof+0xdb/0x760 [ 12.460727][ T85] __kmalloc_noprof+0x443/0x760 [ 12.460730][ T85] ? alloc_buf.isra.0+0x4b/0x260 [ 12.460737][ T85] ? do_raw_spin_unlock+0x59/0x250 [ 12.460739][ T85] alloc_buf.isra.0+0x4b/0x260 [ 12.460744][ T85] put_chars+0x1e1/0x2f0 [ 12.460747][ T85] ? __send_to_port+0x420/0x420 [ 12.460749][ T85] ? printk_get_next_message+0x2fe/0x7d0 [ 12.460753][ T85] ? rcu_read_lock_any_held+0x3c/0x90 [ 12.460756][ T85] ? validate_chain+0x38b/0xc20 [ 12.460760][ T85] hvc_console_print+0x292/0x780 [ 12.460764][ T85] ? __lock_acquire+0x518/0xc20 [ 12.460765][ T85] ? __lock_acquire+0x518/0xc20 [ 12.460770][ T85] ? hvc_write+0x3a0/0x3a0 [ 12.460774][ T85] ? rcu_is_watching+0x16/0xd0 [ 12.460777][ T85] ? lock_acquire+0x13c/0x160 [ 12.460781][ T85] console_emit_next_record+0x252/0x4f0 [ 12.460785][ T85] ? devkmsg_read+0x4e0/0x4e0 [ 12.460790][ T85] ? rcu_is_watching+0x16/0xd0 [ 12.460792][ T85] ? lock_acquire+0x13c/0x160 [ 12.460796][ T85] console_flush_one_record+0x46f/0x710 [ 12.460800][ T85] ? console_emit_next_record+0x4f0/0x4f0 [ 12.460802][ T85] ? __lock_acquire+0x518/0xc20 [ 12.460809][ T85] console_unlock+0xee/0x1f0 [ 12.460812][ T85] ? console_flush_one_record+0x710/0x710 [ 12.460814][ T85] ? rcu_is_watching+0x16/0xd0 [ 12.460816][ T85] ? lock_acquire+0xa0/0x160 [ 12.460820][ T85] ? __down_trylock_console_sem+0x5e/0xa0 [ 12.460821][ T85] ? vprintk_emit+0x320/0x3e0 [ 12.460825][ T85] vprintk_emit+0x37c/0x3e0 [ 12.460829][ T85] ? wake_up_klogd_work_func+0x90/0x90 [ 12.460832][ T85] ? __lock_acquire+0x518/0xc20 [ 12.460836][ T85] _printk+0xc7/0x100 [ 12.460840][ T85] ? snapshot_read.cold+0x21/0x21 [ 12.460843][ T85] ? do_raw_spin_lock+0x131/0x280 [ 12.460845][ T85] ? __rwlock_init+0x150/0x150 [ 12.460849][ T85] ? do_raw_spin_lock+0x131/0x280 [ 12.460852][ T85] do_exit.cold+0x82/0x9c [ 12.460856][ T85] ? exit_notify+0x890/0x890 [ 12.460857][ T85] ? __lock_release.isra.0+0x69/0x1a0 [ 12.460860][ T85] ? rcu_is_watching+0x16/0xd0 [ 12.460864][ T85] do_group_exit+0xb8/0x370 [ 12.460867][ T85] __x64_sys_exit_group+0x3c/0x50 [ 12.460869][ T85] x64_sys_call+0x1567/0x1570 [ 12.460871][ T85] do_syscall_64+0xff/0x530 [ 12.460875][ T85] ? irq_exit_rcu+0x1a/0x30 [ 12.460878][ T85] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 12.460880][ T85] RIP: 0033:0x7f13bc29e1b8 [ 12.460882][ T85] Code: Unable to access opcode bytes at 0x7f13bc29e18e. [ 12.460883][ T85] RSP: 002b:00007ffe74163388 EFLAGS: 00000256 ORIG_RAX: 00000000000000e7 [ 12.460886][ T85] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f13bc29e1b8 [ 12.460888][ T85] RDX: 0000000000000000 RSI: fffffffffffffe90 RDI: 0000000000000000 [ 12.460889][ T85] RBP: 00007ffe74163510 R08: 0000561624e16918 R09: 0000000000000000 [ 12.460890][ T85] R10: 0000000000000000 R11: 0000000000000256 R12: 0000000000000000 [ 12.460890][ T85] R13: 00007f13bbafc050 R14: 00007f13bc7cfd9e R15: 0000561624ca8670 [ 12.460898][ T85]