[ 15.626033][ T186] (udev-worker) (186) used greatest stack depth: 22696 bytes left [ 15.626053][ T186] BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:322 [ 15.626055][ T186] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 186, name: (udev-worker) [ 15.626057][ T186] preempt_count: 2, expected: 0 [ 15.626058][ T186] RCU nest depth: 0, expected: 0 [ 15.626059][ T186] locks held by (udev-worker)/186: 5, last CPU#2: [ 15.626061][ T186] #0: ffffffffad4027b8 (low_water_lock){+.+.}-{3:3}, at: do_exit+0x887/0xdc0 [ 15.626073][ T186] #1: ffffffffad599cc0 (console_lock){+.+.}-{0:0}, at: vprintk_emit+0x320/0x3e0 [ 15.626078][ T186] #2: ffffffffad599d38 (console_srcu){....}-{0:0}, at: console_flush_one_record+0x106/0x710 [ 15.626082][ T186] #3: ffffffffad489660 (console_owner){....}-{0:0}, at: console_lock_spinning_enable+0x40/0x60 [ 15.626087][ T186] #4: ffffffffad489560 (printk_legacy_map-wait-type-override){....}-{3:3}, at: console_emit_next_record+0x202/0x4f0 [ 15.626091][ T186] irq event stamp: 80316 [ 15.626092][ T186] hardirqs last enabled at (80315): [] __down_trylock_console_sem+0x86/0xa0 [ 15.626095][ T186] hardirqs last disabled at (80316): [] console_emit_next_record+0x3f8/0x4f0 [ 15.626098][ T186] softirqs last enabled at (80252): [] netlink_release+0x17b/0xcf0 [ 15.626102][ T186] softirqs last disabled at (80250): [] netlink_release+0xd2/0xcf0 [ 15.626105][ T186] Preemption disabled at: [ 15.626105][ T186] [<0000000000000000>] 0x0 [ 15.626112][ T186] CPU: 2 UID: 0 PID: 186 Comm: (udev-worker) Tainted: G W 7.2.0-virtme #1 PREEMPT(full) [ 15.626116][ T186] Tainted: [W]=WARN [ 15.626116][ T186] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 15.626118][ T186] Call Trace: [ 15.626120][ T186] [ 15.626121][ T186] dump_stack_lvl+0x6f/0xa0 [ 15.626128][ T186] __might_resched.cold+0x1fe/0x2c1 [ 15.626133][ T186] ? perf_trace_sched_switch+0x7c0/0x7c0 [ 15.626137][ T186] ? __kmalloc_noprof+0xdb/0x760 [ 15.626143][ T186] __kmalloc_noprof+0x443/0x760 [ 15.626145][ T186] ? alloc_buf.isra.0+0x4b/0x260 [ 15.626152][ T186] ? do_raw_spin_unlock+0x59/0x250 [ 15.626154][ T186] alloc_buf.isra.0+0x4b/0x260 [ 15.626158][ T186] put_chars+0x1e1/0x2f0 [ 15.626161][ T186] ? __send_to_port+0x420/0x420 [ 15.626163][ T186] ? printk_get_next_message+0x2fe/0x7d0 [ 15.626167][ T186] ? rcu_read_lock_any_held+0x3c/0x90 [ 15.626170][ T186] ? validate_chain+0x38b/0xc20 [ 15.626174][ T186] hvc_console_print+0x292/0x780 [ 15.626178][ T186] ? __lock_acquire+0x518/0xc20 [ 15.626180][ T186] ? __lock_acquire+0x518/0xc20 [ 15.626184][ T186] ? hvc_write+0x3a0/0x3a0 [ 15.626188][ T186] ? rcu_is_watching+0x16/0xd0 [ 15.626190][ T186] ? lock_acquire+0x13c/0x160 [ 15.626194][ T186] console_emit_next_record+0x252/0x4f0 [ 15.626198][ T186] ? devkmsg_read+0x4e0/0x4e0 [ 15.626203][ T186] ? rcu_is_watching+0x16/0xd0 [ 15.626204][ T186] ? lock_acquire+0x13c/0x160 [ 15.626208][ T186] console_flush_one_record+0x46f/0x710 [ 15.626213][ T186] ? console_emit_next_record+0x4f0/0x4f0 [ 15.626215][ T186] ? __lock_acquire+0x518/0xc20 [ 15.626220][ T186] console_unlock+0xee/0x1f0 [ 15.626223][ T186] ? console_flush_one_record+0x710/0x710 [ 15.626225][ T186] ? rcu_is_watching+0x16/0xd0 [ 15.626227][ T186] ? lock_acquire+0x60/0x160 [ 15.626231][ T186] ? __down_trylock_console_sem+0x5e/0xa0 [ 15.626232][ T186] ? vprintk_emit+0x320/0x3e0 [ 15.626235][ T186] vprintk_emit+0x37c/0x3e0 [ 15.626239][ T186] ? wake_up_klogd_work_func+0x90/0x90 [ 15.626242][ T186] ? __lock_acquire+0x518/0xc20 [ 15.626246][ T186] _printk+0xc7/0x100 [ 15.626250][ T186] ? snapshot_read.cold+0x21/0x21 [ 15.626253][ T186] ? do_raw_spin_lock+0x131/0x280 [ 15.626256][ T186] ? __rwlock_init+0x150/0x150 [ 15.626260][ T186] ? do_raw_spin_lock+0x131/0x280 [ 15.626263][ T186] do_exit.cold+0x82/0x9c [ 15.626267][ T186] ? exit_notify+0x890/0x890 [ 15.626271][ T186] ? __lock_release.isra.0+0x69/0x1a0 [ 15.626274][ T186] ? rcu_is_watching+0x16/0xd0 [ 15.626278][ T186] do_group_exit+0xb8/0x370 [ 15.626281][ T186] __x64_sys_exit_group+0x3c/0x50 [ 15.626283][ T186] x64_sys_call+0x1567/0x1570 [ 15.626285][ T186] do_syscall_64+0xff/0x530 [ 15.626289][ T186] ? exc_page_fault+0xee/0x100 [ 15.626292][ T186] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 15.626295][ T186] RIP: 0033:0x7f8dea0fb1b8 [ 15.626297][ T186] Code: Unable to access opcode bytes at 0x7f8dea0fb18e. [ 15.626298][ T186] RSP: 002b:00007ffcfec8e5a8 EFLAGS: 00000256 ORIG_RAX: 00000000000000e7 [ 15.626301][ T186] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f8dea0fb1b8 [ 15.626302][ T186] RDX: 0000000000000000 RSI: fffffffffffffe90 RDI: 0000000000000000 [ 15.626303][ T186] RBP: 00007ffcfec8e730 R08: 00005584bd0d42b8 R09: 0000000000000000 [ 15.626304][ T186] R10: 0000000000000000 R11: 0000000000000256 R12: 0000000000000000 [ 15.626305][ T186] R13: 00007f8de9959050 R14: 00007f8dea62cd9e R15: 00005584bcf4abb0 [ 15.626312][ T186]