[ 14.147958][ T82] (udev-worker) (82) used greatest stack depth: 22696 bytes left [ 14.147978][ T82] BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:322 [ 14.147980][ T82] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 82, name: (udev-worker) [ 14.147981][ T82] preempt_count: 2, expected: 0 [ 14.147982][ T82] RCU nest depth: 0, expected: 0 [ 14.147983][ T82] locks held by (udev-worker)/82: 5, last CPU#1: [ 14.147985][ T82] #0: ffffffffb80167b8 (low_water_lock){+.+.}-{3:3}, at: do_exit+0x887/0xdc0 [ 14.147998][ T82] #1: ffffffffb817ddc0 (console_lock){+.+.}-{0:0}, at: vprintk_emit+0x320/0x3e0 [ 14.148003][ T82] #2: ffffffffb817de38 (console_srcu){....}-{0:0}, at: console_flush_one_record+0x106/0x710 [ 14.148007][ T82] #3: ffffffffb809d760 (console_owner){....}-{0:0}, at: console_lock_spinning_enable+0x40/0x60 [ 14.148010][ T82] #4: ffffffffb809d660 (printk_legacy_map-wait-type-override){....}-{3:3}, at: console_emit_next_record+0x1df/0x4c0 [ 14.148015][ T82] irq event stamp: 416872 [ 14.148015][ T82] hardirqs last enabled at (416871): [] __down_trylock_console_sem+0x86/0xa0 [ 14.148019][ T82] hardirqs last disabled at (416872): [] console_emit_next_record+0x3d4/0x4c0 [ 14.148021][ T82] softirqs last enabled at (416802): [] netlink_release+0x17b/0xcf0 [ 14.148025][ T82] softirqs last disabled at (416800): [] netlink_release+0xd2/0xcf0 [ 14.148027][ T82] Preemption disabled at: [ 14.148028][ T82] [<0000000000000000>] 0x0 [ 14.148035][ T82] CPU: 1 UID: 0 PID: 82 Comm: (udev-worker) Tainted: G W 7.2.0-virtme #1 PREEMPT(full) [ 14.148038][ T82] Tainted: [W]=WARN [ 14.148039][ T82] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 14.148041][ T82] Call Trace: [ 14.148042][ T82] [ 14.148043][ T82] dump_stack_lvl+0x6f/0xa0 [ 14.148050][ T82] __might_resched.cold+0x1fe/0x2c1 [ 14.148055][ T82] ? perf_trace_sched_switch+0x7c0/0x7c0 [ 14.148059][ T82] ? __kmalloc_noprof+0xdb/0x760 [ 14.148063][ T82] __kmalloc_noprof+0x443/0x760 [ 14.148065][ T82] ? alloc_buf.isra.0+0x4b/0x260 [ 14.148071][ T82] ? do_raw_spin_unlock+0x59/0x250 [ 14.148074][ T82] alloc_buf.isra.0+0x4b/0x260 [ 14.148077][ T82] put_chars+0x1e1/0x2f0 [ 14.148079][ T82] ? __send_to_port+0x420/0x420 [ 14.148081][ T82] ? rcu_lockdep_current_cpu_online+0x3f/0x1b0 [ 14.148084][ T82] ? validate_chain+0x38b/0xc20 [ 14.148089][ T82] hvc_console_print+0x292/0x780 [ 14.148097][ T82] ? hvc_write+0x3a0/0x3a0 [ 14.148099][ T82] ? rcu_is_watching+0x16/0xd0 [ 14.148101][ T82] ? lock_acquire+0x13c/0x160 [ 14.148105][ T82] console_emit_next_record+0x22f/0x4c0 [ 14.148109][ T82] ? devkmsg_read+0x4b0/0x4b0 [ 14.148111][ T82] ? console_flush_one_record+0x106/0x710 [ 14.148114][ T82] ? rcu_is_watching+0x16/0xd0 [ 14.148116][ T82] ? lock_acquire+0x13c/0x160 [ 14.148120][ T82] console_flush_one_record+0x46f/0x710 [ 14.148124][ T82] ? console_emit_next_record+0x4c0/0x4c0 [ 14.148126][ T82] ? __lock_acquire+0x518/0xc20 [ 14.148131][ T82] console_unlock+0xee/0x1f0 [ 14.148133][ T82] ? console_flush_one_record+0x710/0x710 [ 14.148135][ T82] ? rcu_is_watching+0x16/0xd0 [ 14.148137][ T82] ? lock_acquire+0xe0/0x160 [ 14.148140][ T82] ? __down_trylock_console_sem+0x5e/0xa0 [ 14.148142][ T82] ? vprintk_emit+0x320/0x3e0 [ 14.148145][ T82] vprintk_emit+0x37c/0x3e0 [ 14.148148][ T82] ? wake_up_klogd_work_func+0x90/0x90 [ 14.148150][ T82] ? __lock_acquire+0x518/0xc20 [ 14.148154][ T82] _printk+0xc7/0x100 [ 14.148158][ T82] ? snapshot_read.cold+0x21/0x21 [ 14.148160][ T82] ? do_raw_spin_lock+0x131/0x280 [ 14.148163][ T82] ? __rwlock_init+0x150/0x150 [ 14.148167][ T82] ? do_raw_spin_lock+0x131/0x280 [ 14.148169][ T82] do_exit.cold+0x82/0x9c [ 14.148173][ T82] ? exit_notify+0x890/0x890 [ 14.148174][ T82] ? __lock_release.isra.0+0x69/0x1a0 [ 14.148177][ T82] ? rcu_is_watching+0x16/0xd0 [ 14.148180][ T82] do_group_exit+0xb8/0x370 [ 14.148183][ T82] __x64_sys_exit_group+0x3c/0x50 [ 14.148185][ T82] x64_sys_call+0x1567/0x1570 [ 14.148187][ T82] do_syscall_64+0xff/0x530 [ 14.148191][ T82] ? irq_exit_rcu+0x1a/0x30 [ 14.148194][ T82] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 14.148196][ T82] RIP: 0033:0x7f40039bd1b8 [ 14.148198][ T82] Code: Unable to access opcode bytes at 0x7f40039bd18e. [ 14.148199][ T82] RSP: 002b:00007ffc164ffb88 EFLAGS: 00000256 ORIG_RAX: 00000000000000e7 [ 14.148202][ T82] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f40039bd1b8 [ 14.148203][ T82] RDX: 0000000000000000 RSI: fffffffffffffe90 RDI: 0000000000000000 [ 14.148204][ T82] RBP: 00007ffc164ffd10 R08: 0000560c9b915f48 R09: 0000000000000000 [ 14.148205][ T82] R10: 0000000000000000 R11: 0000000000000256 R12: 0000000000000000 [ 14.148206][ T82] R13: 00007f400321b050 R14: 00007f4003eeed9e R15: 0000560c9ba597e0 [ 14.148212][ T82]