[ 13.429407][ T85] (udev-worker) (85) used greatest stack depth: 22696 bytes left [ 13.429428][ T85] BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:322 [ 13.429430][ T85] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 85, name: (udev-worker) [ 13.429432][ T85] preempt_count: 2, expected: 0 [ 13.429433][ T85] RCU nest depth: 0, expected: 0 [ 13.429434][ T85] locks held by (udev-worker)/85: 5, last CPU#3: [ 13.429436][ T85] #0: ffffffff91a027b8 (low_water_lock){+.+.}-{3:3}, at: do_exit+0x887/0xdc0 [ 13.429447][ T85] #1: ffffffff91b99dc0 (console_lock){+.+.}-{0:0}, at: vprintk_emit+0x320/0x3e0 [ 13.429453][ T85] #2: ffffffff91b99e38 (console_srcu){....}-{0:0}, at: console_flush_one_record+0x106/0x710 [ 13.429458][ T85] #3: ffffffff91a89760 (console_owner){....}-{0:0}, at: console_lock_spinning_enable+0x40/0x60 [ 13.429462][ T85] #4: ffffffff91a89660 (printk_legacy_map-wait-type-override){....}-{3:3}, at: console_emit_next_record+0x202/0x4f0 [ 13.429466][ T85] irq event stamp: 373190 [ 13.429467][ T85] hardirqs last enabled at (373189): [] __down_trylock_console_sem+0x86/0xa0 [ 13.429470][ T85] hardirqs last disabled at (373190): [] console_emit_next_record+0x3f8/0x4f0 [ 13.429472][ T85] softirqs last enabled at (373124): [] netlink_release+0x17b/0xcf0 [ 13.429476][ T85] softirqs last disabled at (373122): [] netlink_release+0xd2/0xcf0 [ 13.429479][ T85] Preemption disabled at: [ 13.429479][ T85] [<0000000000000000>] 0x0 [ 13.429487][ T85] CPU: 3 UID: 0 PID: 85 Comm: (udev-worker) Tainted: G W 7.2.0-virtme #1 PREEMPT(full) [ 13.429491][ T85] Tainted: [W]=WARN [ 13.429492][ T85] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 13.429493][ T85] Call Trace: [ 13.429495][ T85] [ 13.429497][ T85] dump_stack_lvl+0x6f/0xa0 [ 13.429503][ T85] __might_resched.cold+0x1fe/0x2c1 [ 13.429508][ T85] ? perf_trace_sched_switch+0x7c0/0x7c0 [ 13.429512][ T85] ? __kmalloc_noprof+0xdb/0x760 [ 13.429517][ T85] __kmalloc_noprof+0x443/0x760 [ 13.429520][ T85] ? alloc_buf.isra.0+0x4b/0x260 [ 13.429526][ T85] ? do_raw_spin_unlock+0x59/0x250 [ 13.429529][ T85] alloc_buf.isra.0+0x4b/0x260 [ 13.429533][ T85] put_chars+0x1e1/0x2f0 [ 13.429537][ T85] ? __send_to_port+0x420/0x420 [ 13.429538][ T85] ? printk_get_next_message+0x2fe/0x7d0 [ 13.429542][ T85] ? rcu_read_lock_any_held+0x3c/0x90 [ 13.429545][ T85] ? validate_chain+0x38b/0xc20 [ 13.429549][ T85] hvc_console_print+0x292/0x780 [ 13.429553][ T85] ? __lock_acquire+0x518/0xc20 [ 13.429555][ T85] ? __lock_acquire+0x518/0xc20 [ 13.429560][ T85] ? hvc_write+0x3a0/0x3a0 [ 13.429563][ T85] ? rcu_is_watching+0x16/0xd0 [ 13.429567][ T85] ? lock_acquire+0x13c/0x160 [ 13.429571][ T85] console_emit_next_record+0x252/0x4f0 [ 13.429575][ T85] ? devkmsg_read+0x4e0/0x4e0 [ 13.429579][ T85] ? rcu_is_watching+0x16/0xd0 [ 13.429582][ T85] ? lock_acquire+0x13c/0x160 [ 13.429586][ T85] console_flush_one_record+0x46f/0x710 [ 13.429590][ T85] ? console_emit_next_record+0x4f0/0x4f0 [ 13.429592][ T85] ? __lock_acquire+0x518/0xc20 [ 13.429597][ T85] console_unlock+0xee/0x1f0 [ 13.429600][ T85] ? console_flush_one_record+0x710/0x710 [ 13.429602][ T85] ? rcu_is_watching+0x16/0xd0 [ 13.429604][ T85] ? lock_acquire+0xa0/0x160 [ 13.429608][ T85] ? __down_trylock_console_sem+0x5e/0xa0 [ 13.429610][ T85] ? vprintk_emit+0x320/0x3e0 [ 13.429613][ T85] vprintk_emit+0x37c/0x3e0 [ 13.429617][ T85] ? wake_up_klogd_work_func+0x90/0x90 [ 13.429621][ T85] ? __lock_acquire+0x518/0xc20 [ 13.429624][ T85] _printk+0xc7/0x100 [ 13.429628][ T85] ? snapshot_read.cold+0x21/0x21 [ 13.429631][ T85] ? do_raw_spin_lock+0x131/0x280 [ 13.429633][ T85] ? __rwlock_init+0x150/0x150 [ 13.429637][ T85] ? do_raw_spin_lock+0x131/0x280 [ 13.429640][ T85] do_exit.cold+0x82/0x9c [ 13.429644][ T85] ? exit_notify+0x890/0x890 [ 13.429645][ T85] ? __lock_release.isra.0+0x69/0x1a0 [ 13.429648][ T85] ? rcu_is_watching+0x16/0xd0 [ 13.429652][ T85] do_group_exit+0xb8/0x370 [ 13.429655][ T85] __x64_sys_exit_group+0x3c/0x50 [ 13.429657][ T85] x64_sys_call+0x1567/0x1570 [ 13.429659][ T85] do_syscall_64+0xff/0x530 [ 13.429663][ T85] ? irq_exit_rcu+0x1a/0x30 [ 13.429666][ T85] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 13.429668][ T85] RIP: 0033:0x7fbf6de1a1b8 [ 13.429671][ T85] Code: Unable to access opcode bytes at 0x7fbf6de1a18e. [ 13.429672][ T85] RSP: 002b:00007ffdbd07b378 EFLAGS: 00000256 ORIG_RAX: 00000000000000e7 [ 13.429674][ T85] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fbf6de1a1b8 [ 13.429676][ T85] RDX: 0000000000000000 RSI: fffffffffffffe90 RDI: 0000000000000000 [ 13.429677][ T85] RBP: 00007ffdbd07b500 R08: 00005595b688e5a8 R09: 0000000000000000 [ 13.429678][ T85] R10: 0000000000000000 R11: 0000000000000256 R12: 0000000000000000 [ 13.429678][ T85] R13: 00007fbf6d678050 R14: 00007fbf6e34bd9e R15: 00005595b6887410 [ 13.429685][ T85]