[ 14.104039][ T84] (udev-worker) (84) used greatest stack depth: 22696 bytes left [ 14.104059][ T84] BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:322 [ 14.104061][ T84] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 84, name: (udev-worker) [ 14.104063][ T84] preempt_count: 2, expected: 0 [ 14.104064][ T84] RCU nest depth: 0, expected: 0 [ 14.104065][ T84] locks held by (udev-worker)/84: 5, last CPU#0: [ 14.104067][ T84] #0: ffffffff8fe027b8 (low_water_lock){+.+.}-{3:3}, at: do_exit+0x887/0xdc0 [ 14.104081][ T84] #1: ffffffff8ff69cc0 (console_lock){+.+.}-{0:0}, at: vprintk_emit+0x320/0x3e0 [ 14.104087][ T84] #2: ffffffff8ff69d38 (console_srcu){....}-{0:0}, at: console_flush_one_record+0x106/0x710 [ 14.104090][ T84] #3: ffffffff8fe89660 (console_owner){....}-{0:0}, at: console_lock_spinning_enable+0x40/0x60 [ 14.104094][ T84] #4: ffffffff8fe89560 (printk_legacy_map-wait-type-override){....}-{3:3}, at: console_emit_next_record+0x1df/0x4c0 [ 14.104098][ T84] irq event stamp: 511368 [ 14.104099][ T84] hardirqs last enabled at (511367): [] __down_trylock_console_sem+0x86/0xa0 [ 14.104102][ T84] hardirqs last disabled at (511368): [] console_emit_next_record+0x3d4/0x4c0 [ 14.104103][ T84] softirqs last enabled at (511304): [] netlink_release+0x17b/0xcf0 [ 14.104108][ T84] softirqs last disabled at (511302): [] netlink_release+0xd2/0xcf0 [ 14.104110][ T84] Preemption disabled at: [ 14.104111][ T84] [<0000000000000000>] 0x0 [ 14.104118][ T84] CPU: 0 UID: 0 PID: 84 Comm: (udev-worker) Tainted: G W 7.2.0-virtme #1 PREEMPT(full) [ 14.104122][ T84] Tainted: [W]=WARN [ 14.104122][ T84] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 14.104124][ T84] Call Trace: [ 14.104126][ T84] [ 14.104128][ T84] dump_stack_lvl+0x6f/0xa0 [ 14.104134][ T84] __might_resched.cold+0x1fe/0x2c1 [ 14.104138][ T84] ? perf_trace_sched_switch+0x7c0/0x7c0 [ 14.104143][ T84] ? __kmalloc_noprof+0xdb/0x760 [ 14.104148][ T84] __kmalloc_noprof+0x443/0x760 [ 14.104150][ T84] ? alloc_buf.isra.0+0x4b/0x260 [ 14.104157][ T84] ? do_raw_spin_unlock+0x59/0x250 [ 14.104159][ T84] alloc_buf.isra.0+0x4b/0x260 [ 14.104163][ T84] put_chars+0x1e1/0x2f0 [ 14.104166][ T84] ? __send_to_port+0x420/0x420 [ 14.104168][ T84] ? rcu_lockdep_current_cpu_online+0x3f/0x1b0 [ 14.104172][ T84] ? validate_chain+0x38b/0xc20 [ 14.104177][ T84] hvc_console_print+0x292/0x780 [ 14.104185][ T84] ? hvc_write+0x3a0/0x3a0 [ 14.104187][ T84] ? rcu_is_watching+0x16/0xd0 [ 14.104190][ T84] ? lock_acquire+0x13c/0x160 [ 14.104194][ T84] console_emit_next_record+0x22f/0x4c0 [ 14.104197][ T84] ? devkmsg_read+0x4b0/0x4b0 [ 14.104199][ T84] ? console_flush_one_record+0x106/0x710 [ 14.104202][ T84] ? rcu_is_watching+0x16/0xd0 [ 14.104204][ T84] ? lock_acquire+0x13c/0x160 [ 14.104208][ T84] console_flush_one_record+0x46f/0x710 [ 14.104212][ T84] ? console_emit_next_record+0x4c0/0x4c0 [ 14.104213][ T84] ? __lock_acquire+0x518/0xc20 [ 14.104218][ T84] console_unlock+0xee/0x1f0 [ 14.104221][ T84] ? console_flush_one_record+0x710/0x710 [ 14.104223][ T84] ? rcu_is_watching+0x16/0xd0 [ 14.104225][ T84] ? lock_acquire+0x60/0x160 [ 14.104228][ T84] ? __down_trylock_console_sem+0x5e/0xa0 [ 14.104230][ T84] ? vprintk_emit+0x320/0x3e0 [ 14.104233][ T84] vprintk_emit+0x37c/0x3e0 [ 14.104237][ T84] ? wake_up_klogd_work_func+0x90/0x90 [ 14.104240][ T84] ? __lock_acquire+0x518/0xc20 [ 14.104244][ T84] _printk+0xc7/0x100 [ 14.104247][ T84] ? snapshot_read.cold+0x21/0x21 [ 14.104250][ T84] ? do_raw_spin_lock+0x131/0x280 [ 14.104253][ T84] ? __rwlock_init+0x150/0x150 [ 14.104256][ T84] ? do_raw_spin_lock+0x131/0x280 [ 14.104259][ T84] do_exit.cold+0x82/0x9c [ 14.104263][ T84] ? exit_notify+0x890/0x890 [ 14.104265][ T84] ? __lock_release.isra.0+0x69/0x1a0 [ 14.104267][ T84] ? rcu_is_watching+0x16/0xd0 [ 14.104271][ T84] do_group_exit+0xb8/0x370 [ 14.104275][ T84] __x64_sys_exit_group+0x3c/0x50 [ 14.104277][ T84] x64_sys_call+0x1567/0x1570 [ 14.104279][ T84] do_syscall_64+0xff/0x530 [ 14.104283][ T84] ? irq_exit_rcu+0x1a/0x30 [ 14.104286][ T84] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 14.104289][ T84] RIP: 0033:0x7f7d826e51b8 [ 14.104291][ T84] Code: Unable to access opcode bytes at 0x7f7d826e518e. [ 14.104292][ T84] RSP: 002b:00007ffe637bca38 EFLAGS: 00000256 ORIG_RAX: 00000000000000e7 [ 14.104295][ T84] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f7d826e51b8 [ 14.104296][ T84] RDX: 0000000000000000 RSI: fffffffffffffe90 RDI: 0000000000000000 [ 14.104297][ T84] RBP: 00007ffe637bcbc0 R08: 0000555dcef55458 R09: 0000000000000000 [ 14.104298][ T84] R10: 0000000000000000 R11: 0000000000000256 R12: 0000000000000000 [ 14.104299][ T84] R13: 00007f7d81f43050 R14: 00007f7d82c16d9e R15: 0000555dcedf43b0 [ 14.104306][ T84]