[ 13.504498][ T90] (udev-worker) (90) used greatest stack depth: 22696 bytes left [ 13.504518][ T90] BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:322 [ 13.504520][ T90] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 90, name: (udev-worker) [ 13.504522][ T90] preempt_count: 2, expected: 0 [ 13.504523][ T90] RCU nest depth: 0, expected: 0 [ 13.504524][ T90] locks held by (udev-worker)/90: 5, last CPU#3: [ 13.504526][ T90] #0: ffffffffafc027b8 (low_water_lock){+.+.}-{3:3}, at: do_exit+0x887/0xdc0 [ 13.504539][ T90] #1: ffffffffafd69cc0 (console_lock){+.+.}-{0:0}, at: vprintk_emit+0x320/0x3e0 [ 13.504545][ T90] #2: ffffffffafd69d38 (console_srcu){....}-{0:0}, at: console_flush_one_record+0x106/0x710 [ 13.504549][ T90] #3: ffffffffafc89660 (console_owner){....}-{0:0}, at: console_lock_spinning_enable+0x40/0x60 [ 13.504553][ T90] #4: ffffffffafc89560 (printk_legacy_map-wait-type-override){....}-{3:3}, at: console_emit_next_record+0x1df/0x4c0 [ 13.504560][ T90] irq event stamp: 437046 [ 13.504560][ T90] hardirqs last enabled at (437045): [] __down_trylock_console_sem+0x86/0xa0 [ 13.504563][ T90] hardirqs last disabled at (437046): [] console_emit_next_record+0x3d4/0x4c0 [ 13.504565][ T90] softirqs last enabled at (436982): [] netlink_release+0x17b/0xcf0 [ 13.504569][ T90] softirqs last disabled at (436980): [] netlink_release+0xd2/0xcf0 [ 13.504572][ T90] Preemption disabled at: [ 13.504573][ T90] [<0000000000000000>] 0x0 [ 13.504580][ T90] CPU: 3 UID: 0 PID: 90 Comm: (udev-worker) Tainted: G W 7.2.0-virtme #1 PREEMPT(full) [ 13.504584][ T90] Tainted: [W]=WARN [ 13.504584][ T90] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 13.504586][ T90] Call Trace: [ 13.504588][ T90] [ 13.504589][ T90] dump_stack_lvl+0x6f/0xa0 [ 13.504595][ T90] __might_resched.cold+0x1fe/0x2c1 [ 13.504600][ T90] ? perf_trace_sched_switch+0x7c0/0x7c0 [ 13.504604][ T90] ? __kmalloc_noprof+0xdb/0x760 [ 13.504609][ T90] __kmalloc_noprof+0x443/0x760 [ 13.504611][ T90] ? alloc_buf.isra.0+0x4b/0x260 [ 13.504617][ T90] ? do_raw_spin_unlock+0x59/0x250 [ 13.504619][ T90] alloc_buf.isra.0+0x4b/0x260 [ 13.504623][ T90] put_chars+0x1e1/0x2f0 [ 13.504626][ T90] ? __send_to_port+0x420/0x420 [ 13.504628][ T90] ? rcu_lockdep_current_cpu_online+0x3f/0x1b0 [ 13.504633][ T90] ? validate_chain+0x38b/0xc20 [ 13.504637][ T90] hvc_console_print+0x292/0x780 [ 13.504644][ T90] ? hvc_write+0x3a0/0x3a0 [ 13.504647][ T90] ? rcu_is_watching+0x16/0xd0 [ 13.504649][ T90] ? lock_acquire+0x13c/0x160 [ 13.504653][ T90] console_emit_next_record+0x22f/0x4c0 [ 13.504657][ T90] ? devkmsg_read+0x4b0/0x4b0 [ 13.504658][ T90] ? console_flush_one_record+0x106/0x710 [ 13.504661][ T90] ? rcu_is_watching+0x16/0xd0 [ 13.504663][ T90] ? lock_acquire+0x13c/0x160 [ 13.504667][ T90] console_flush_one_record+0x46f/0x710 [ 13.504670][ T90] ? console_emit_next_record+0x4c0/0x4c0 [ 13.504672][ T90] ? __lock_acquire+0x518/0xc20 [ 13.504677][ T90] console_unlock+0xee/0x1f0 [ 13.504680][ T90] ? console_flush_one_record+0x710/0x710 [ 13.504681][ T90] ? rcu_is_watching+0x16/0xd0 [ 13.504683][ T90] ? lock_acquire+0x60/0x160 [ 13.504687][ T90] ? __down_trylock_console_sem+0x5e/0xa0 [ 13.504688][ T90] ? vprintk_emit+0x320/0x3e0 [ 13.504691][ T90] vprintk_emit+0x37c/0x3e0 [ 13.504694][ T90] ? wake_up_klogd_work_func+0x90/0x90 [ 13.504698][ T90] ? __lock_acquire+0x518/0xc20 [ 13.504701][ T90] _printk+0xc7/0x100 [ 13.504705][ T90] ? snapshot_read.cold+0x21/0x21 [ 13.504707][ T90] ? do_raw_spin_lock+0x131/0x280 [ 13.504710][ T90] ? __rwlock_init+0x150/0x150 [ 13.504713][ T90] ? do_raw_spin_lock+0x131/0x280 [ 13.504716][ T90] do_exit.cold+0x82/0x9c [ 13.504719][ T90] ? exit_notify+0x890/0x890 [ 13.504721][ T90] ? __lock_release.isra.0+0x69/0x1a0 [ 13.504724][ T90] ? rcu_is_watching+0x16/0xd0 [ 13.504727][ T90] do_group_exit+0xb8/0x370 [ 13.504731][ T90] __x64_sys_exit_group+0x3c/0x50 [ 13.504733][ T90] x64_sys_call+0x1567/0x1570 [ 13.504735][ T90] do_syscall_64+0xff/0x530 [ 13.504739][ T90] ? exc_page_fault+0xee/0x100 [ 13.504742][ T90] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 13.504745][ T90] RIP: 0033:0x7f5c160a61b8 [ 13.504747][ T90] Code: Unable to access opcode bytes at 0x7f5c160a618e. [ 13.504749][ T90] RSP: 002b:00007fff8843d648 EFLAGS: 00000256 ORIG_RAX: 00000000000000e7 [ 13.504751][ T90] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f5c160a61b8 [ 13.504753][ T90] RDX: 0000000000000000 RSI: fffffffffffffe90 RDI: 0000000000000000 [ 13.504754][ T90] RBP: 00007fff8843d7d0 R08: 0000562e033b0798 R09: 0000000000000000 [ 13.504755][ T90] R10: 0000000000000000 R11: 0000000000000256 R12: 0000000000000000 [ 13.504755][ T90] R13: 00007f5c15904050 R14: 00007f5c165d7d9e R15: 0000562e0325f4b0 [ 13.504762][ T90]