[ 13.260900][ T81] (udev-worker) (81) used greatest stack depth: 22696 bytes left [ 13.260921][ T81] BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:322 [ 13.260923][ T81] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 81, name: (udev-worker) [ 13.260924][ T81] preempt_count: 2, expected: 0 [ 13.260925][ T81] RCU nest depth: 0, expected: 0 [ 13.260926][ T81] locks held by (udev-worker)/81: 5, last CPU#2: [ 13.260929][ T81] #0: ffffffff85e027b8 (low_water_lock){+.+.}-{3:3}, at: do_exit+0x887/0xdc0 [ 13.260944][ T81] #1: ffffffff85f69cc0 (console_lock){+.+.}-{0:0}, at: vprintk_emit+0x320/0x3e0 [ 13.260950][ T81] #2: ffffffff85f69d38 (console_srcu){....}-{0:0}, at: console_flush_one_record+0x106/0x710 [ 13.260953][ T81] #3: ffffffff85e89660 (console_owner){....}-{0:0}, at: console_lock_spinning_enable+0x40/0x60 [ 13.260957][ T81] #4: ffffffff85e89560 (printk_legacy_map-wait-type-override){....}-{3:3}, at: console_emit_next_record+0x1df/0x4c0 [ 13.260961][ T81] irq event stamp: 472620 [ 13.260962][ T81] hardirqs last enabled at (472619): [] __down_trylock_console_sem+0x86/0xa0 [ 13.260964][ T81] hardirqs last disabled at (472620): [] console_emit_next_record+0x3d4/0x4c0 [ 13.260966][ T81] softirqs last enabled at (472556): [] netlink_release+0x17b/0xcf0 [ 13.260970][ T81] softirqs last disabled at (472554): [] netlink_release+0xd2/0xcf0 [ 13.260973][ T81] Preemption disabled at: [ 13.260974][ T81] [<0000000000000000>] 0x0 [ 13.260981][ T81] CPU: 2 UID: 0 PID: 81 Comm: (udev-worker) Tainted: G W 7.2.0-virtme #1 PREEMPT(full) [ 13.260984][ T81] Tainted: [W]=WARN [ 13.260985][ T81] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 13.260987][ T81] Call Trace: [ 13.260989][ T81] [ 13.260991][ T81] dump_stack_lvl+0x6f/0xa0 [ 13.260997][ T81] __might_resched.cold+0x1fe/0x2c1 [ 13.261002][ T81] ? perf_trace_sched_switch+0x7c0/0x7c0 [ 13.261006][ T81] ? __kmalloc_noprof+0xdb/0x760 [ 13.261011][ T81] __kmalloc_noprof+0x443/0x760 [ 13.261013][ T81] ? alloc_buf.isra.0+0x4b/0x260 [ 13.261019][ T81] ? do_raw_spin_unlock+0x59/0x250 [ 13.261022][ T81] alloc_buf.isra.0+0x4b/0x260 [ 13.261026][ T81] put_chars+0x1e1/0x2f0 [ 13.261029][ T81] ? __send_to_port+0x420/0x420 [ 13.261031][ T81] ? rcu_lockdep_current_cpu_online+0x3f/0x1b0 [ 13.261035][ T81] ? validate_chain+0x38b/0xc20 [ 13.261040][ T81] hvc_console_print+0x292/0x780 [ 13.261047][ T81] ? hvc_write+0x3a0/0x3a0 [ 13.261050][ T81] ? rcu_is_watching+0x16/0xd0 [ 13.261052][ T81] ? lock_acquire+0x13c/0x160 [ 13.261056][ T81] console_emit_next_record+0x22f/0x4c0 [ 13.261060][ T81] ? devkmsg_read+0x4b0/0x4b0 [ 13.261062][ T81] ? console_flush_one_record+0x106/0x710 [ 13.261065][ T81] ? rcu_is_watching+0x16/0xd0 [ 13.261067][ T81] ? lock_acquire+0x13c/0x160 [ 13.261070][ T81] console_flush_one_record+0x46f/0x710 [ 13.261074][ T81] ? console_emit_next_record+0x4c0/0x4c0 [ 13.261076][ T81] ? __lock_acquire+0x518/0xc20 [ 13.261081][ T81] console_unlock+0xee/0x1f0 [ 13.261084][ T81] ? console_flush_one_record+0x710/0x710 [ 13.261085][ T81] ? rcu_is_watching+0x16/0xd0 [ 13.261087][ T81] ? lock_acquire+0x60/0x160 [ 13.261091][ T81] ? __down_trylock_console_sem+0x5e/0xa0 [ 13.261092][ T81] ? vprintk_emit+0x320/0x3e0 [ 13.261095][ T81] vprintk_emit+0x37c/0x3e0 [ 13.261099][ T81] ? wake_up_klogd_work_func+0x90/0x90 [ 13.261102][ T81] ? __lock_acquire+0x518/0xc20 [ 13.261106][ T81] _printk+0xc7/0x100 [ 13.261109][ T81] ? snapshot_read.cold+0x21/0x21 [ 13.261112][ T81] ? do_raw_spin_lock+0x131/0x280 [ 13.261115][ T81] ? __rwlock_init+0x150/0x150 [ 13.261118][ T81] ? do_raw_spin_lock+0x131/0x280 [ 13.261121][ T81] do_exit.cold+0x82/0x9c [ 13.261125][ T81] ? exit_notify+0x890/0x890 [ 13.261127][ T81] ? __lock_release.isra.0+0x69/0x1a0 [ 13.261129][ T81] ? rcu_is_watching+0x16/0xd0 [ 13.261133][ T81] do_group_exit+0xb8/0x370 [ 13.261136][ T81] __x64_sys_exit_group+0x3c/0x50 [ 13.261139][ T81] x64_sys_call+0x1567/0x1570 [ 13.261141][ T81] do_syscall_64+0xff/0x530 [ 13.261145][ T81] ? irq_exit_rcu+0x1a/0x30 [ 13.261148][ T81] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 13.261151][ T81] RIP: 0033:0x7f62359691b8 [ 13.261154][ T81] Code: Unable to access opcode bytes at 0x7f623596918e. [ 13.261162][ T81] RSP: 002b:00007ffd9e8502f8 EFLAGS: 00000256 ORIG_RAX: 00000000000000e7 [ 13.261164][ T81] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f62359691b8 [ 13.261166][ T81] RDX: 0000000000000000 RSI: fffffffffffffe90 RDI: 0000000000000000 [ 13.261167][ T81] RBP: 00007ffd9e850480 R08: 000055faa5df4f48 R09: 0000000000000000 [ 13.261168][ T81] R10: 0000000000000000 R11: 0000000000000256 R12: 0000000000000000 [ 13.261168][ T81] R13: 00007f62351c7050 R14: 00007f6235e9ad9e R15: 000055faa5f38690 [ 13.261175][ T81]