[ 15.869016][ T81] (udev-worker) (81) used greatest stack depth: 22696 bytes left [ 15.869037][ T81] BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:322 [ 15.869039][ T81] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 81, name: (udev-worker) [ 15.869041][ T81] preempt_count: 2, expected: 0 [ 15.869042][ T81] RCU nest depth: 0, expected: 0 [ 15.869043][ T81] locks held by (udev-worker)/81: 5, last CPU#2: [ 15.869045][ T81] #0: ffffffffb5e027b8 (low_water_lock){+.+.}-{3:3}, at: do_exit+0x887/0xdc0 [ 15.869059][ T81] #1: ffffffffb5f99cc0 (console_lock){+.+.}-{0:0}, at: vprintk_emit+0x320/0x3e0 [ 15.869064][ T81] #2: ffffffffb5f99d38 (console_srcu){....}-{0:0}, at: console_flush_one_record+0x106/0x710 [ 15.869068][ T81] #3: ffffffffb5e89660 (console_owner){....}-{0:0}, at: console_lock_spinning_enable+0x40/0x60 [ 15.869072][ T81] #4: ffffffffb5e89560 (printk_legacy_map-wait-type-override){....}-{3:3}, at: console_emit_next_record+0x202/0x4f0 [ 15.869076][ T81] irq event stamp: 406130 [ 15.869077][ T81] hardirqs last enabled at (406129): [] __down_trylock_console_sem+0x86/0xa0 [ 15.869080][ T81] hardirqs last disabled at (406130): [] console_emit_next_record+0x3f8/0x4f0 [ 15.869081][ T81] softirqs last enabled at (406066): [] netlink_release+0x17b/0xcf0 [ 15.869086][ T81] softirqs last disabled at (406064): [] netlink_release+0xd2/0xcf0 [ 15.869089][ T81] Preemption disabled at: [ 15.869089][ T81] [<0000000000000000>] 0x0 [ 15.869096][ T81] CPU: 2 UID: 0 PID: 81 Comm: (udev-worker) Tainted: G W 7.2.0-virtme #1 PREEMPT(full) [ 15.869100][ T81] Tainted: [W]=WARN [ 15.869101][ T81] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 15.869103][ T81] Call Trace: [ 15.869105][ T81] [ 15.869106][ T81] dump_stack_lvl+0x6f/0xa0 [ 15.869113][ T81] __might_resched.cold+0x1fe/0x2c1 [ 15.869118][ T81] ? perf_trace_sched_switch+0x7c0/0x7c0 [ 15.869122][ T81] ? __kmalloc_noprof+0xdb/0x760 [ 15.869127][ T81] __kmalloc_noprof+0x443/0x760 [ 15.869129][ T81] ? alloc_buf.isra.0+0x4b/0x260 [ 15.869135][ T81] ? do_raw_spin_unlock+0x59/0x250 [ 15.869137][ T81] alloc_buf.isra.0+0x4b/0x260 [ 15.869140][ T81] put_chars+0x1e1/0x2f0 [ 15.869143][ T81] ? __send_to_port+0x420/0x420 [ 15.869145][ T81] ? printk_get_next_message+0x2fe/0x7d0 [ 15.869148][ T81] ? rcu_read_lock_any_held+0x3c/0x90 [ 15.869151][ T81] ? validate_chain+0x38b/0xc20 [ 15.869155][ T81] hvc_console_print+0x292/0x780 [ 15.869159][ T81] ? __lock_acquire+0x518/0xc20 [ 15.869160][ T81] ? __lock_acquire+0x518/0xc20 [ 15.869164][ T81] ? hvc_write+0x3a0/0x3a0 [ 15.869167][ T81] ? rcu_is_watching+0x16/0xd0 [ 15.869170][ T81] ? lock_acquire+0x13c/0x160 [ 15.869174][ T81] console_emit_next_record+0x252/0x4f0 [ 15.869178][ T81] ? devkmsg_read+0x4e0/0x4e0 [ 15.869182][ T81] ? rcu_is_watching+0x16/0xd0 [ 15.869184][ T81] ? lock_acquire+0x13c/0x160 [ 15.869188][ T81] console_flush_one_record+0x46f/0x710 [ 15.869192][ T81] ? console_emit_next_record+0x4f0/0x4f0 [ 15.869193][ T81] ? __lock_acquire+0x518/0xc20 [ 15.869198][ T81] console_unlock+0xee/0x1f0 [ 15.869201][ T81] ? console_flush_one_record+0x710/0x710 [ 15.869202][ T81] ? rcu_is_watching+0x16/0xd0 [ 15.869205][ T81] ? lock_acquire+0x60/0x160 [ 15.869208][ T81] ? __down_trylock_console_sem+0x5e/0xa0 [ 15.869209][ T81] ? vprintk_emit+0x320/0x3e0 [ 15.869213][ T81] vprintk_emit+0x37c/0x3e0 [ 15.869216][ T81] ? wake_up_klogd_work_func+0x90/0x90 [ 15.869220][ T81] ? __lock_acquire+0x518/0xc20 [ 15.869223][ T81] _printk+0xc7/0x100 [ 15.869227][ T81] ? snapshot_read.cold+0x21/0x21 [ 15.869230][ T81] ? do_raw_spin_lock+0x131/0x280 [ 15.869232][ T81] ? __rwlock_init+0x150/0x150 [ 15.869236][ T81] ? do_raw_spin_lock+0x131/0x280 [ 15.869238][ T81] do_exit.cold+0x82/0x9c [ 15.869242][ T81] ? exit_notify+0x890/0x890 [ 15.869244][ T81] ? __lock_release.isra.0+0x69/0x1a0 [ 15.869246][ T81] ? rcu_is_watching+0x16/0xd0 [ 15.869250][ T81] do_group_exit+0xb8/0x370 [ 15.869254][ T81] __x64_sys_exit_group+0x3c/0x50 [ 15.869256][ T81] x64_sys_call+0x1567/0x1570 [ 15.869259][ T81] do_syscall_64+0xff/0x530 [ 15.869262][ T81] ? exc_page_fault+0xee/0x100 [ 15.869265][ T81] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 15.869267][ T81] RIP: 0033:0x7fb20cec11b8 [ 15.869270][ T81] Code: Unable to access opcode bytes at 0x7fb20cec118e. [ 15.869271][ T81] RSP: 002b:00007fff34131908 EFLAGS: 00000256 ORIG_RAX: 00000000000000e7 [ 15.869273][ T81] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fb20cec11b8 [ 15.869275][ T81] RDX: 0000000000000000 RSI: fffffffffffffe90 RDI: 0000000000000000 [ 15.869276][ T81] RBP: 00007fff34131a90 R08: 0000563a96249f58 R09: 0000000000000000 [ 15.869277][ T81] R10: 0000000000000000 R11: 0000000000000256 R12: 0000000000000000 [ 15.869278][ T81] R13: 00007fb20c71f050 R14: 00007fb20d3f2d9e R15: 0000563a9638c6e0 [ 15.869285][ T81]