[ 20.150465][ T195] (udev-worker) (195) used greatest stack depth: 22696 bytes left [ 20.150485][ T195] BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:322 [ 20.150487][ T195] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 195, name: (udev-worker) [ 20.150490][ T195] preempt_count: 2, expected: 0 [ 20.150496][ T195] RCU nest depth: 0, expected: 0 [ 20.150497][ T195] INFO: lockdep is turned off. [ 20.150499][ T195] irq event stamp: 649216 [ 20.150500][ T195] hardirqs last enabled at (649215): [] _raw_spin_unlock_irq+0x28/0x50 [ 20.150510][ T195] hardirqs last disabled at (649216): [] __schedule+0x1246/0x20e0 [ 20.150514][ T195] softirqs last enabled at (649146): [] unix_release_sock+0x446/0xe60 [ 20.150519][ T195] softirqs last disabled at (649144): [] unix_release_sock+0x39f/0xe60 [ 20.150522][ T195] Preemption disabled at: [ 20.150523][ T195] [<0000000000000000>] 0x0 [ 20.150531][ T195] CPU: 2 UID: 0 PID: 195 Comm: (udev-worker) Tainted: G W 7.2.0-virtme #1 PREEMPT(full) [ 20.150536][ T195] Tainted: [W]=WARN [ 20.150537][ T195] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 20.150540][ T195] Call Trace: [ 20.150541][ T195] [ 20.150543][ T195] dump_stack_lvl+0x6f/0xa0 [ 20.150550][ T195] __might_resched.cold+0x1fe/0x2c1 [ 20.150555][ T195] ? perf_trace_sched_switch+0x7c0/0x7c0 [ 20.150560][ T195] ? __asan_memcpy+0x3c/0x60 [ 20.150564][ T195] ? rcu_is_watching+0x16/0xd0 [ 20.150568][ T195] __kmalloc_noprof+0x443/0x760 [ 20.150572][ T195] ? __rwlock_init+0x150/0x150 [ 20.150575][ T195] ? alloc_buf.isra.0+0x4b/0x260 [ 20.150582][ T195] ? do_raw_spin_unlock+0x59/0x250 [ 20.150584][ T195] alloc_buf.isra.0+0x4b/0x260 [ 20.150588][ T195] put_chars+0x1e1/0x2f0 [ 20.150590][ T195] ? __send_to_port+0x420/0x420 [ 20.150593][ T195] ? console_prepend_replay+0x20/0x20 [ 20.150598][ T195] hvc_console_print+0x292/0x780 [ 20.150604][ T195] ? hvc_write+0x3a0/0x3a0 [ 20.150607][ T195] ? rcu_is_watching+0x16/0xd0 [ 20.150609][ T195] ? lock_acquire+0x13c/0x160 [ 20.150613][ T195] console_emit_next_record+0x22f/0x4c0 [ 20.150617][ T195] ? devkmsg_read+0x4b0/0x4b0 [ 20.150620][ T195] ? rcu_is_watching+0x16/0xd0 [ 20.150621][ T195] ? rcu_is_watching+0x16/0xd0 [ 20.150623][ T195] ? rcu_is_watching+0x16/0xd0 [ 20.150625][ T195] ? lock_acquire+0x13c/0x160 [ 20.150628][ T195] ? console_flush_one_record+0x111/0x710 [ 20.150631][ T195] console_flush_one_record+0x46f/0x710 [ 20.150634][ T195] ? console_emit_next_record+0x4c0/0x4c0 [ 20.150639][ T195] console_unlock+0xee/0x1f0 [ 20.150641][ T195] ? lock_acquire+0x13c/0x160 [ 20.150644][ T195] ? console_flush_one_record+0x710/0x710 [ 20.150647][ T195] ? rcu_is_watching+0x16/0xd0 [ 20.150649][ T195] ? lock_release+0x184/0x1f0 [ 20.150651][ T195] ? lock_acquire+0xe0/0x160 [ 20.150653][ T195] ? __rcu_read_lock+0x70/0x70 [ 20.150656][ T195] ? __down_trylock_console_sem+0x5e/0xa0 [ 20.150659][ T195] ? vprintk_emit+0x320/0x3e0 [ 20.150661][ T195] vprintk_emit+0x37c/0x3e0 [ 20.150664][ T195] ? wake_up_klogd_work_func+0x90/0x90 [ 20.150666][ T195] ? do_raw_read_unlock+0x70/0x70 [ 20.150669][ T195] ? forget_original_parent+0x5c/0xdb0 [ 20.150673][ T195] _printk+0xc7/0x100 [ 20.150678][ T195] ? snapshot_read.cold+0x21/0x21 [ 20.150680][ T195] ? do_raw_spin_lock+0x131/0x280 [ 20.150683][ T195] ? do_raw_spin_lock+0x131/0x280 [ 20.150686][ T195] ? __rwlock_init+0x150/0x150 [ 20.150689][ T195] ? do_raw_spin_lock+0x131/0x280 [ 20.150692][ T195] do_exit.cold+0x82/0x9c [ 20.150696][ T195] ? vfs_read+0x385/0x520 [ 20.150699][ T195] ? exit_notify+0x890/0x890 [ 20.150701][ T195] ? posixtimer_sig_unignore.isra.0+0x5f0/0x5f0 [ 20.150705][ T195] ? rcu_is_watching+0x16/0xd0 [ 20.150708][ T195] do_group_exit+0xb8/0x370 [ 20.150710][ T195] __x64_sys_exit_group+0x3c/0x50 [ 20.150713][ T195] x64_sys_call+0x1567/0x1570 [ 20.150716][ T195] do_syscall_64+0xff/0x530 [ 20.150720][ T195] ? irq_exit_rcu+0x1a/0x30 [ 20.150723][ T195] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 20.150726][ T195] RIP: 0033:0x7f496f02a1b8 [ 20.150728][ T195] Code: Unable to access opcode bytes at 0x7f496f02a18e. [ 20.150730][ T195] RSP: 002b:00007ffc6a7ec068 EFLAGS: 00000256 ORIG_RAX: 00000000000000e7 [ 20.150734][ T195] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f496f02a1b8 [ 20.150736][ T195] RDX: 0000000000000000 RSI: fffffffffffffe90 RDI: 0000000000000000 [ 20.150738][ T195] RBP: 00007ffc6a7ec1f0 R08: 0000561e8ec4e138 R09: 0000000000000000 [ 20.150739][ T195] R10: 0000000000000000 R11: 0000000000000256 R12: 0000000000000000 [ 20.150741][ T195] R13: 00007f496e888050 R14: 00007f496f55bd9e R15: 0000561e8ed91620 [ 20.150745][ T195]