[ 13.492891][ T91] (udev-worker) (91) used greatest stack depth: 22696 bytes left [ 13.492912][ T91] BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:322 [ 13.492914][ T91] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 91, name: (udev-worker) [ 13.492916][ T91] preempt_count: 2, expected: 0 [ 13.492917][ T91] RCU nest depth: 0, expected: 0 [ 13.492918][ T91] locks held by (udev-worker)/91: 5, last CPU#0: [ 13.492920][ T91] #0: ffffffff8c0027b8 (low_water_lock){+.+.}-{3:3}, at: do_exit+0x887/0xdc0 [ 13.492934][ T91] #1: ffffffff8c169cc0 (console_lock){+.+.}-{0:0}, at: vprintk_emit+0x320/0x3e0 [ 13.492940][ T91] #2: ffffffff8c169d38 (console_srcu){....}-{0:0}, at: console_flush_one_record+0x106/0x710 [ 13.492943][ T91] #3: ffffffff8c089660 (console_owner){....}-{0:0}, at: console_lock_spinning_enable+0x40/0x60 [ 13.492947][ T91] #4: ffffffff8c089560 (printk_legacy_map-wait-type-override){....}-{3:3}, at: console_emit_next_record+0x1df/0x4c0 [ 13.492951][ T91] irq event stamp: 404662 [ 13.492952][ T91] hardirqs last enabled at (404661): [] __down_trylock_console_sem+0x86/0xa0 [ 13.492954][ T91] hardirqs last disabled at (404662): [] console_emit_next_record+0x3d4/0x4c0 [ 13.492956][ T91] softirqs last enabled at (404598): [] netlink_release+0x17b/0xcf0 [ 13.492960][ T91] softirqs last disabled at (404596): [] netlink_release+0xd2/0xcf0 [ 13.492962][ T91] Preemption disabled at: [ 13.492963][ T91] [<0000000000000000>] 0x0 [ 13.492971][ T91] CPU: 0 UID: 0 PID: 91 Comm: (udev-worker) Tainted: G W 7.2.0-virtme #1 PREEMPT(full) [ 13.492974][ T91] Tainted: [W]=WARN [ 13.492975][ T91] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 13.492977][ T91] Call Trace: [ 13.492979][ T91] [ 13.492981][ T91] dump_stack_lvl+0x6f/0xa0 [ 13.492987][ T91] __might_resched.cold+0x1fe/0x2c1 [ 13.492991][ T91] ? perf_trace_sched_switch+0x7c0/0x7c0 [ 13.492995][ T91] ? __kmalloc_noprof+0xdb/0x760 [ 13.493000][ T91] __kmalloc_noprof+0x443/0x760 [ 13.493002][ T91] ? alloc_buf.isra.0+0x4b/0x260 [ 13.493009][ T91] ? do_raw_spin_unlock+0x59/0x250 [ 13.493011][ T91] alloc_buf.isra.0+0x4b/0x260 [ 13.493015][ T91] put_chars+0x1e1/0x2f0 [ 13.493018][ T91] ? __send_to_port+0x420/0x420 [ 13.493020][ T91] ? rcu_lockdep_current_cpu_online+0x3f/0x1b0 [ 13.493025][ T91] ? validate_chain+0x38b/0xc20 [ 13.493030][ T91] hvc_console_print+0x292/0x780 [ 13.493037][ T91] ? hvc_write+0x3a0/0x3a0 [ 13.493040][ T91] ? rcu_is_watching+0x16/0xd0 [ 13.493042][ T91] ? lock_acquire+0x13c/0x160 [ 13.493046][ T91] console_emit_next_record+0x22f/0x4c0 [ 13.493052][ T91] ? devkmsg_read+0x4b0/0x4b0 [ 13.493054][ T91] ? console_flush_one_record+0x106/0x710 [ 13.493058][ T91] ? rcu_is_watching+0x16/0xd0 [ 13.493060][ T91] ? lock_acquire+0x13c/0x160 [ 13.493066][ T91] console_flush_one_record+0x46f/0x710 [ 13.493073][ T91] ? console_emit_next_record+0x4c0/0x4c0 [ 13.493076][ T91] ? __lock_acquire+0x518/0xc20 [ 13.493082][ T91] console_unlock+0xee/0x1f0 [ 13.493084][ T91] ? console_flush_one_record+0x710/0x710 [ 13.493086][ T91] ? rcu_is_watching+0x16/0xd0 [ 13.493088][ T91] ? lock_acquire+0x60/0x160 [ 13.493092][ T91] ? __down_trylock_console_sem+0x5e/0xa0 [ 13.493093][ T91] ? vprintk_emit+0x320/0x3e0 [ 13.493096][ T91] vprintk_emit+0x37c/0x3e0 [ 13.493100][ T91] ? wake_up_klogd_work_func+0x90/0x90 [ 13.493104][ T91] ? __lock_acquire+0x518/0xc20 [ 13.493107][ T91] _printk+0xc7/0x100 [ 13.493111][ T91] ? snapshot_read.cold+0x21/0x21 [ 13.493114][ T91] ? do_raw_spin_lock+0x131/0x280 [ 13.493116][ T91] ? __rwlock_init+0x150/0x150 [ 13.493120][ T91] ? do_raw_spin_lock+0x131/0x280 [ 13.493122][ T91] do_exit.cold+0x82/0x9c [ 13.493126][ T91] ? exit_notify+0x890/0x890 [ 13.493128][ T91] ? __lock_release.isra.0+0x69/0x1a0 [ 13.493131][ T91] ? rcu_is_watching+0x16/0xd0 [ 13.493135][ T91] do_group_exit+0xb8/0x370 [ 13.493138][ T91] __x64_sys_exit_group+0x3c/0x50 [ 13.493141][ T91] x64_sys_call+0x1567/0x1570 [ 13.493143][ T91] do_syscall_64+0xff/0x530 [ 13.493147][ T91] ? exc_page_fault+0xee/0x100 [ 13.493150][ T91] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 13.493153][ T91] RIP: 0033:0x7fad3cf311b8 [ 13.493155][ T91] Code: Unable to access opcode bytes at 0x7fad3cf3118e. [ 13.493157][ T91] RSP: 002b:00007ffde52015e8 EFLAGS: 00000256 ORIG_RAX: 00000000000000e7 [ 13.493159][ T91] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fad3cf311b8 [ 13.493161][ T91] RDX: 0000000000000000 RSI: fffffffffffffe90 RDI: 0000000000000000 [ 13.493162][ T91] RBP: 00007ffde5201770 R08: 0000560f411de9b8 R09: 0000000000000000 [ 13.493163][ T91] R10: 0000000000000000 R11: 0000000000000256 R12: 0000000000000000 [ 13.493163][ T91] R13: 00007fad3c78f050 R14: 00007fad3d462d9e R15: 0000560f410738c0 [ 13.493170][ T91]