[ 19.869341][ T202] (udev-worker) (202) used greatest stack depth: 22696 bytes left [ 19.869363][ T202] BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:322 [ 19.869366][ T202] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 202, name: (udev-worker) [ 19.869367][ T202] preempt_count: 2, expected: 0 [ 19.869368][ T202] RCU nest depth: 0, expected: 0 [ 19.869369][ T202] locks held by (udev-worker)/202: 5, last CPU#3: [ 19.869371][ T202] #0: ffffffffaf0167b8 (low_water_lock){+.+.}-{3:3}, at: do_exit+0x887/0xdc0 [ 19.869383][ T202] #1: ffffffffaf17ddc0 (console_lock){+.+.}-{0:0}, at: vprintk_emit+0x320/0x3e0 [ 19.869389][ T202] #2: ffffffffaf17de38 (console_srcu){....}-{0:0}, at: console_flush_one_record+0x106/0x710 [ 19.869393][ T202] #3: ffffffffaf09d760 (console_owner){....}-{0:0}, at: console_lock_spinning_enable+0x40/0x60 [ 19.869397][ T202] #4: ffffffffaf09d660 (printk_legacy_map-wait-type-override){....}-{3:3}, at: console_emit_next_record+0x1df/0x4c0 [ 19.869401][ T202] irq event stamp: 856128 [ 19.869402][ T202] hardirqs last enabled at (856127): [] __down_trylock_console_sem+0x86/0xa0 [ 19.869405][ T202] hardirqs last disabled at (856128): [] console_emit_next_record+0x3d4/0x4c0 [ 19.869408][ T202] softirqs last enabled at (856058): [] netlink_release+0x17b/0xcf0 [ 19.869412][ T202] softirqs last disabled at (856056): [] netlink_release+0xd2/0xcf0 [ 19.869415][ T202] Preemption disabled at: [ 19.869415][ T202] [<0000000000000000>] 0x0 [ 19.869422][ T202] CPU: 3 UID: 0 PID: 202 Comm: (udev-worker) Tainted: G W 7.2.0-virtme #1 PREEMPT(full) [ 19.869426][ T202] Tainted: [W]=WARN [ 19.869427][ T202] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 19.869429][ T202] Call Trace: [ 19.869430][ T202] [ 19.869432][ T202] dump_stack_lvl+0x6f/0xa0 [ 19.869439][ T202] __might_resched.cold+0x1fe/0x2c1 [ 19.869444][ T202] ? perf_trace_sched_switch+0x7c0/0x7c0 [ 19.869448][ T202] ? __kmalloc_noprof+0xdb/0x760 [ 19.869453][ T202] __kmalloc_noprof+0x443/0x760 [ 19.869457][ T202] ? alloc_buf.isra.0+0x4b/0x260 [ 19.869463][ T202] ? do_raw_spin_unlock+0x59/0x250 [ 19.869466][ T202] alloc_buf.isra.0+0x4b/0x260 [ 19.869471][ T202] put_chars+0x1e1/0x2f0 [ 19.869473][ T202] ? __send_to_port+0x420/0x420 [ 19.869475][ T202] ? rcu_lockdep_current_cpu_online+0x3f/0x1b0 [ 19.869479][ T202] ? validate_chain+0x38b/0xc20 [ 19.869484][ T202] hvc_console_print+0x292/0x780 [ 19.869492][ T202] ? hvc_write+0x3a0/0x3a0 [ 19.869495][ T202] ? rcu_is_watching+0x16/0xd0 [ 19.869497][ T202] ? lock_acquire+0x13c/0x160 [ 19.869502][ T202] console_emit_next_record+0x22f/0x4c0 [ 19.869506][ T202] ? devkmsg_read+0x4b0/0x4b0 [ 19.869508][ T202] ? console_flush_one_record+0x106/0x710 [ 19.869511][ T202] ? rcu_is_watching+0x16/0xd0 [ 19.869513][ T202] ? lock_acquire+0x13c/0x160 [ 19.869518][ T202] console_flush_one_record+0x46f/0x710 [ 19.869522][ T202] ? console_emit_next_record+0x4c0/0x4c0 [ 19.869524][ T202] ? __lock_acquire+0x518/0xc20 [ 19.869530][ T202] console_unlock+0xee/0x1f0 [ 19.869533][ T202] ? console_flush_one_record+0x710/0x710 [ 19.869535][ T202] ? rcu_is_watching+0x16/0xd0 [ 19.869537][ T202] ? lock_acquire+0xe0/0x160 [ 19.869541][ T202] ? __down_trylock_console_sem+0x5e/0xa0 [ 19.869543][ T202] ? vprintk_emit+0x320/0x3e0 [ 19.869546][ T202] vprintk_emit+0x37c/0x3e0 [ 19.869549][ T202] ? wake_up_klogd_work_func+0x90/0x90 [ 19.869552][ T202] ? __lock_acquire+0x518/0xc20 [ 19.869556][ T202] _printk+0xc7/0x100 [ 19.869560][ T202] ? snapshot_read.cold+0x21/0x21 [ 19.869563][ T202] ? do_raw_spin_lock+0x131/0x280 [ 19.869566][ T202] ? __rwlock_init+0x150/0x150 [ 19.869570][ T202] ? do_raw_spin_lock+0x131/0x280 [ 19.869573][ T202] do_exit.cold+0x82/0x9c [ 19.869577][ T202] ? exit_notify+0x890/0x890 [ 19.869579][ T202] ? __lock_release.isra.0+0x69/0x1a0 [ 19.869582][ T202] ? rcu_is_watching+0x16/0xd0 [ 19.869585][ T202] do_group_exit+0xb8/0x370 [ 19.869589][ T202] __x64_sys_exit_group+0x3c/0x50 [ 19.869591][ T202] x64_sys_call+0x1567/0x1570 [ 19.869594][ T202] do_syscall_64+0xff/0x530 [ 19.869598][ T202] ? exc_page_fault+0xee/0x100 [ 19.869601][ T202] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 19.869603][ T202] RIP: 0033:0x7f51373861b8 [ 19.869606][ T202] Code: Unable to access opcode bytes at 0x7f513738618e. [ 19.869607][ T202] RSP: 002b:00007ffca590abb8 EFLAGS: 00000256 ORIG_RAX: 00000000000000e7 [ 19.869609][ T202] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f51373861b8 [ 19.869611][ T202] RDX: 0000000000000000 RSI: fffffffffffffe90 RDI: 0000000000000000 [ 19.869612][ T202] RBP: 00007ffca590ad40 R08: 000055832363d608 R09: 0000000000000000 [ 19.869612][ T202] R10: 0000000000000000 R11: 0000000000000256 R12: 0000000000000000 [ 19.869613][ T202] R13: 00007f5136be4050 R14: 00007f51378b7d9e R15: 0000558323617910 [ 19.869620][ T202]