[ 12.093598][ T86] (udev-worker) (86) used greatest stack depth: 22696 bytes left [ 12.093616][ T86] BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:322 [ 12.093618][ T86] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 86, name: (udev-worker) [ 12.093620][ T86] preempt_count: 2, expected: 0 [ 12.093621][ T86] RCU nest depth: 0, expected: 0 [ 12.093622][ T86] locks held by (udev-worker)/86: 5, last CPU#3: [ 12.093624][ T86] #0: ffffffffa58027b8 (low_water_lock){+.+.}-{3:3}, at: do_exit+0x887/0xdc0 [ 12.093635][ T86] #1: ffffffffa5999dc0 (console_lock){+.+.}-{0:0}, at: vprintk_emit+0x320/0x3e0 [ 12.093641][ T86] #2: ffffffffa5999e38 (console_srcu){....}-{0:0}, at: console_flush_one_record+0x106/0x710 [ 12.093645][ T86] #3: ffffffffa5889760 (console_owner){....}-{0:0}, at: console_lock_spinning_enable+0x40/0x60 [ 12.093649][ T86] #4: ffffffffa5889660 (printk_legacy_map-wait-type-override){....}-{3:3}, at: console_emit_next_record+0x202/0x4f0 [ 12.093654][ T86] irq event stamp: 380524 [ 12.093654][ T86] hardirqs last enabled at (380523): [] __down_trylock_console_sem+0x86/0xa0 [ 12.093657][ T86] hardirqs last disabled at (380524): [] console_emit_next_record+0x3f8/0x4f0 [ 12.093659][ T86] softirqs last enabled at (380458): [] handle_softirqs+0x67c/0x900 [ 12.093661][ T86] softirqs last disabled at (379107): [] do_softirq+0xac/0xe0 [ 12.093663][ T86] Preemption disabled at: [ 12.093664][ T86] [<0000000000000000>] 0x0 [ 12.093671][ T86] CPU: 3 UID: 0 PID: 86 Comm: (udev-worker) Tainted: G W 7.2.0-virtme #1 PREEMPT(full) [ 12.093675][ T86] Tainted: [W]=WARN [ 12.093676][ T86] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 12.093677][ T86] Call Trace: [ 12.093679][ T86] [ 12.093680][ T86] dump_stack_lvl+0x6f/0xa0 [ 12.093687][ T86] __might_resched.cold+0x1fe/0x2c1 [ 12.093691][ T86] ? perf_trace_sched_switch+0x7c0/0x7c0 [ 12.093695][ T86] ? __kmalloc_noprof+0xdb/0x760 [ 12.093700][ T86] __kmalloc_noprof+0x443/0x760 [ 12.093703][ T86] ? alloc_buf.isra.0+0x4b/0x260 [ 12.093710][ T86] ? do_raw_spin_unlock+0x59/0x250 [ 12.093712][ T86] alloc_buf.isra.0+0x4b/0x260 [ 12.093716][ T86] put_chars+0x1e1/0x2f0 [ 12.093720][ T86] ? __send_to_port+0x420/0x420 [ 12.093722][ T86] ? printk_get_next_message+0x2fe/0x7d0 [ 12.093725][ T86] ? rcu_read_lock_any_held+0x3c/0x90 [ 12.093728][ T86] ? validate_chain+0x38b/0xc20 [ 12.093733][ T86] hvc_console_print+0x292/0x780 [ 12.093737][ T86] ? __lock_acquire+0x518/0xc20 [ 12.093738][ T86] ? __lock_acquire+0x518/0xc20 [ 12.093743][ T86] ? hvc_write+0x3a0/0x3a0 [ 12.093747][ T86] ? rcu_is_watching+0x16/0xd0 [ 12.093750][ T86] ? lock_acquire+0x13c/0x160 [ 12.093754][ T86] console_emit_next_record+0x252/0x4f0 [ 12.093758][ T86] ? devkmsg_read+0x4e0/0x4e0 [ 12.093763][ T86] ? rcu_is_watching+0x16/0xd0 [ 12.093765][ T86] ? lock_acquire+0x13c/0x160 [ 12.093769][ T86] console_flush_one_record+0x46f/0x710 [ 12.093773][ T86] ? console_emit_next_record+0x4f0/0x4f0 [ 12.093775][ T86] ? __lock_acquire+0x518/0xc20 [ 12.093781][ T86] console_unlock+0xee/0x1f0 [ 12.093784][ T86] ? console_flush_one_record+0x710/0x710 [ 12.093786][ T86] ? rcu_is_watching+0x16/0xd0 [ 12.093790][ T86] ? lock_acquire+0xa0/0x160 [ 12.093795][ T86] ? __down_trylock_console_sem+0x5e/0xa0 [ 12.093796][ T86] ? vprintk_emit+0x320/0x3e0 [ 12.093800][ T86] vprintk_emit+0x37c/0x3e0 [ 12.093805][ T86] ? wake_up_klogd_work_func+0x90/0x90 [ 12.093809][ T86] ? __lock_acquire+0x518/0xc20 [ 12.093813][ T86] _printk+0xc7/0x100 [ 12.093817][ T86] ? snapshot_read.cold+0x21/0x21 [ 12.093820][ T86] ? do_raw_spin_lock+0x131/0x280 [ 12.093823][ T86] ? __rwlock_init+0x150/0x150 [ 12.093827][ T86] ? do_raw_spin_lock+0x131/0x280 [ 12.093831][ T86] do_exit.cold+0x82/0x9c [ 12.093835][ T86] ? exit_notify+0x890/0x890 [ 12.093836][ T86] ? __lock_release.isra.0+0x69/0x1a0 [ 12.093839][ T86] ? rcu_is_watching+0x16/0xd0 [ 12.093844][ T86] do_group_exit+0xb8/0x370 [ 12.093847][ T86] __x64_sys_exit_group+0x3c/0x50 [ 12.093849][ T86] x64_sys_call+0x1567/0x1570 [ 12.093852][ T86] do_syscall_64+0xff/0x530 [ 12.093856][ T86] ? irq_exit_rcu+0x1a/0x30 [ 12.093859][ T86] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 12.093861][ T86] RIP: 0033:0x7f3773d4c1b8 [ 12.093864][ T86] Code: Unable to access opcode bytes at 0x7f3773d4c18e. [ 12.093865][ T86] RSP: 002b:00007ffd610c3458 EFLAGS: 00000256 ORIG_RAX: 00000000000000e7 [ 12.093868][ T86] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f3773d4c1b8 [ 12.093869][ T86] RDX: 0000000000000000 RSI: fffffffffffffe90 RDI: 0000000000000000 [ 12.093870][ T86] RBP: 00007ffd610c35e0 R08: 0000556e22681f78 R09: 0000000000000000 [ 12.093871][ T86] R10: 0000000000000000 R11: 0000000000000256 R12: 0000000000000000 [ 12.093872][ T86] R13: 00007f37735aa050 R14: 00007f377427dd9e R15: 0000556e225282c0 [ 12.093881][ T86]