[ 13.246770][ T91] (udev-worker) (91) used greatest stack depth: 22696 bytes left [ 13.246793][ T91] BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:322 [ 13.246795][ T91] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 91, name: (udev-worker) [ 13.246797][ T91] preempt_count: 2, expected: 0 [ 13.246798][ T91] RCU nest depth: 0, expected: 0 [ 13.246799][ T91] locks held by (udev-worker)/91: 5, last CPU#1: [ 13.246801][ T91] #0: ffffffff9ce027b8 (low_water_lock){+.+.}-{3:3}, at: do_exit+0x887/0xdc0 [ 13.246814][ T91] #1: ffffffff9cf99dc0 (console_lock){+.+.}-{0:0}, at: vprintk_emit+0x320/0x3e0 [ 13.246820][ T91] #2: ffffffff9cf99e38 (console_srcu){....}-{0:0}, at: console_flush_one_record+0x106/0x710 [ 13.246824][ T91] #3: ffffffff9ce89760 (console_owner){....}-{0:0}, at: console_lock_spinning_enable+0x40/0x60 [ 13.246828][ T91] #4: ffffffff9ce89660 (printk_legacy_map-wait-type-override){....}-{3:3}, at: console_emit_next_record+0x202/0x4f0 [ 13.246833][ T91] irq event stamp: 560262 [ 13.246833][ T91] hardirqs last enabled at (560261): [] __down_trylock_console_sem+0x86/0xa0 [ 13.246836][ T91] hardirqs last disabled at (560262): [] console_emit_next_record+0x3f8/0x4f0 [ 13.246838][ T91] softirqs last enabled at (560198): [] netlink_release+0x17b/0xcf0 [ 13.246843][ T91] softirqs last disabled at (560196): [] netlink_release+0xd2/0xcf0 [ 13.246846][ T91] Preemption disabled at: [ 13.246846][ T91] [<0000000000000000>] 0x0 [ 13.246854][ T91] CPU: 1 UID: 0 PID: 91 Comm: (udev-worker) Tainted: G W 7.2.0-virtme #1 PREEMPT(full) [ 13.246857][ T91] Tainted: [W]=WARN [ 13.246858][ T91] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 13.246860][ T91] Call Trace: [ 13.246861][ T91] [ 13.246863][ T91] dump_stack_lvl+0x6f/0xa0 [ 13.246869][ T91] __might_resched.cold+0x1fe/0x2c1 [ 13.246874][ T91] ? perf_trace_sched_switch+0x7c0/0x7c0 [ 13.246878][ T91] ? __kmalloc_noprof+0xdb/0x760 [ 13.246884][ T91] __kmalloc_noprof+0x443/0x760 [ 13.246886][ T91] ? alloc_buf.isra.0+0x4b/0x260 [ 13.246893][ T91] ? do_raw_spin_unlock+0x59/0x250 [ 13.246895][ T91] alloc_buf.isra.0+0x4b/0x260 [ 13.246899][ T91] put_chars+0x1e1/0x2f0 [ 13.246902][ T91] ? __send_to_port+0x420/0x420 [ 13.246904][ T91] ? printk_get_next_message+0x2fe/0x7d0 [ 13.246908][ T91] ? rcu_read_lock_any_held+0x3c/0x90 [ 13.246911][ T91] ? validate_chain+0x38b/0xc20 [ 13.246915][ T91] hvc_console_print+0x292/0x780 [ 13.246920][ T91] ? __lock_acquire+0x518/0xc20 [ 13.246921][ T91] ? __lock_acquire+0x518/0xc20 [ 13.246925][ T91] ? hvc_write+0x3a0/0x3a0 [ 13.246929][ T91] ? rcu_is_watching+0x16/0xd0 [ 13.246932][ T91] ? lock_acquire+0x13c/0x160 [ 13.246936][ T91] console_emit_next_record+0x252/0x4f0 [ 13.246940][ T91] ? devkmsg_read+0x4e0/0x4e0 [ 13.246949][ T91] ? rcu_is_watching+0x16/0xd0 [ 13.246952][ T91] ? lock_acquire+0x13c/0x160 [ 13.246956][ T91] console_flush_one_record+0x46f/0x710 [ 13.246960][ T91] ? console_emit_next_record+0x4f0/0x4f0 [ 13.246961][ T91] ? __lock_acquire+0x518/0xc20 [ 13.246967][ T91] console_unlock+0xee/0x1f0 [ 13.246969][ T91] ? console_flush_one_record+0x710/0x710 [ 13.246971][ T91] ? rcu_is_watching+0x16/0xd0 [ 13.246974][ T91] ? lock_acquire+0xa0/0x160 [ 13.246977][ T91] ? __down_trylock_console_sem+0x5e/0xa0 [ 13.246979][ T91] ? vprintk_emit+0x320/0x3e0 [ 13.246982][ T91] vprintk_emit+0x37c/0x3e0 [ 13.246986][ T91] ? wake_up_klogd_work_func+0x90/0x90 [ 13.246990][ T91] ? __lock_acquire+0x518/0xc20 [ 13.246993][ T91] _printk+0xc7/0x100 [ 13.246997][ T91] ? snapshot_read.cold+0x21/0x21 [ 13.247000][ T91] ? do_raw_spin_lock+0x131/0x280 [ 13.247002][ T91] ? __rwlock_init+0x150/0x150 [ 13.247006][ T91] ? do_raw_spin_lock+0x131/0x280 [ 13.247009][ T91] do_exit.cold+0x82/0x9c [ 13.247013][ T91] ? exit_notify+0x890/0x890 [ 13.247014][ T91] ? __lock_release.isra.0+0x69/0x1a0 [ 13.247017][ T91] ? rcu_is_watching+0x16/0xd0 [ 13.247021][ T91] do_group_exit+0xb8/0x370 [ 13.247024][ T91] __x64_sys_exit_group+0x3c/0x50 [ 13.247026][ T91] x64_sys_call+0x1567/0x1570 [ 13.247028][ T91] do_syscall_64+0xff/0x530 [ 13.247031][ T91] ? irq_exit_rcu+0x1a/0x30 [ 13.247034][ T91] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 13.247037][ T91] RIP: 0033:0x7f8e6ad5e1b8 [ 13.247039][ T91] Code: Unable to access opcode bytes at 0x7f8e6ad5e18e. [ 13.247040][ T91] RSP: 002b:00007ffe10069ae8 EFLAGS: 00000256 ORIG_RAX: 00000000000000e7 [ 13.247043][ T91] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f8e6ad5e1b8 [ 13.247044][ T91] RDX: 0000000000000000 RSI: fffffffffffffe90 RDI: 0000000000000000 [ 13.247045][ T91] RBP: 00007ffe10069c70 R08: 000055ba931595c8 R09: 0000000000000000 [ 13.247046][ T91] R10: 0000000000000000 R11: 0000000000000256 R12: 0000000000000000 [ 13.247046][ T91] R13: 00007f8e6a5bc050 R14: 00007f8e6b28fd9e R15: 000055ba93107150 [ 13.247053][ T91]