[ 13.310778][ T90] (udev-worker) (90) used greatest stack depth: 22696 bytes left [ 13.310797][ T90] BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:322 [ 13.310799][ T90] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 90, name: (udev-worker) [ 13.310801][ T90] preempt_count: 2, expected: 0 [ 13.310802][ T90] RCU nest depth: 0, expected: 0 [ 13.310803][ T90] locks held by (udev-worker)/90: 5, last CPU#3: [ 13.310806][ T90] #0: ffffffff8cc027b8 (low_water_lock){+.+.}-{3:3}, at: do_exit+0x887/0xdc0 [ 13.310819][ T90] #1: ffffffff8cd99cc0 (console_lock){+.+.}-{0:0}, at: vprintk_emit+0x320/0x3e0 [ 13.310825][ T90] #2: ffffffff8cd99d38 (console_srcu){....}-{0:0}, at: console_flush_one_record+0x106/0x710 [ 13.310829][ T90] #3: ffffffff8cc89660 (console_owner){....}-{0:0}, at: console_lock_spinning_enable+0x40/0x60 [ 13.310832][ T90] #4: ffffffff8cc89560 (printk_legacy_map-wait-type-override){....}-{3:3}, at: console_emit_next_record+0x202/0x4f0 [ 13.310836][ T90] irq event stamp: 379392 [ 13.310837][ T90] hardirqs last enabled at (379391): [] __down_trylock_console_sem+0x86/0xa0 [ 13.310839][ T90] hardirqs last disabled at (379392): [] console_emit_next_record+0x3f8/0x4f0 [ 13.310841][ T90] softirqs last enabled at (379328): [] netlink_release+0x17b/0xcf0 [ 13.310845][ T90] softirqs last disabled at (379326): [] netlink_release+0xd2/0xcf0 [ 13.310848][ T90] Preemption disabled at: [ 13.310848][ T90] [<0000000000000000>] 0x0 [ 13.310856][ T90] CPU: 3 UID: 0 PID: 90 Comm: (udev-worker) Tainted: G W 7.2.0-virtme #1 PREEMPT(full) [ 13.310859][ T90] Tainted: [W]=WARN [ 13.310860][ T90] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 13.310862][ T90] Call Trace: [ 13.310864][ T90] [ 13.310865][ T90] dump_stack_lvl+0x6f/0xa0 [ 13.310872][ T90] __might_resched.cold+0x1fe/0x2c1 [ 13.310876][ T90] ? perf_trace_sched_switch+0x7c0/0x7c0 [ 13.310880][ T90] ? __kmalloc_noprof+0xdb/0x760 [ 13.310885][ T90] __kmalloc_noprof+0x443/0x760 [ 13.310887][ T90] ? alloc_buf.isra.0+0x4b/0x260 [ 13.310892][ T90] ? do_raw_spin_unlock+0x59/0x250 [ 13.310895][ T90] alloc_buf.isra.0+0x4b/0x260 [ 13.310898][ T90] put_chars+0x1e1/0x2f0 [ 13.310900][ T90] ? __send_to_port+0x420/0x420 [ 13.310902][ T90] ? printk_get_next_message+0x2fe/0x7d0 [ 13.310905][ T90] ? rcu_read_lock_any_held+0x3c/0x90 [ 13.310908][ T90] ? validate_chain+0x38b/0xc20 [ 13.310912][ T90] hvc_console_print+0x292/0x780 [ 13.310915][ T90] ? __lock_acquire+0x518/0xc20 [ 13.310916][ T90] ? __lock_acquire+0x518/0xc20 [ 13.310920][ T90] ? hvc_write+0x3a0/0x3a0 [ 13.310923][ T90] ? rcu_is_watching+0x16/0xd0 [ 13.310926][ T90] ? lock_acquire+0x13c/0x160 [ 13.310930][ T90] console_emit_next_record+0x252/0x4f0 [ 13.310933][ T90] ? devkmsg_read+0x4e0/0x4e0 [ 13.310937][ T90] ? rcu_is_watching+0x16/0xd0 [ 13.310939][ T90] ? lock_acquire+0x13c/0x160 [ 13.310943][ T90] console_flush_one_record+0x46f/0x710 [ 13.310947][ T90] ? console_emit_next_record+0x4f0/0x4f0 [ 13.310948][ T90] ? __lock_acquire+0x518/0xc20 [ 13.310953][ T90] console_unlock+0xee/0x1f0 [ 13.310955][ T90] ? console_flush_one_record+0x710/0x710 [ 13.310957][ T90] ? rcu_is_watching+0x16/0xd0 [ 13.310959][ T90] ? lock_acquire+0x60/0x160 [ 13.310962][ T90] ? __down_trylock_console_sem+0x5e/0xa0 [ 13.310963][ T90] ? vprintk_emit+0x320/0x3e0 [ 13.310966][ T90] vprintk_emit+0x37c/0x3e0 [ 13.310970][ T90] ? wake_up_klogd_work_func+0x90/0x90 [ 13.310973][ T90] ? __lock_acquire+0x518/0xc20 [ 13.310976][ T90] _printk+0xc7/0x100 [ 13.310980][ T90] ? snapshot_read.cold+0x21/0x21 [ 13.310982][ T90] ? do_raw_spin_lock+0x131/0x280 [ 13.310985][ T90] ? __rwlock_init+0x150/0x150 [ 13.310988][ T90] ? do_raw_spin_lock+0x131/0x280 [ 13.310991][ T90] do_exit.cold+0x82/0x9c [ 13.310994][ T90] ? exit_notify+0x890/0x890 [ 13.310996][ T90] ? __lock_release.isra.0+0x69/0x1a0 [ 13.310998][ T90] ? rcu_is_watching+0x16/0xd0 [ 13.311002][ T90] do_group_exit+0xb8/0x370 [ 13.311006][ T90] __x64_sys_exit_group+0x3c/0x50 [ 13.311008][ T90] x64_sys_call+0x1567/0x1570 [ 13.311010][ T90] do_syscall_64+0xff/0x530 [ 13.311013][ T90] ? exc_page_fault+0xee/0x100 [ 13.311016][ T90] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 13.311018][ T90] RIP: 0033:0x7f67eeb1a1b8 [ 13.311021][ T90] Code: Unable to access opcode bytes at 0x7f67eeb1a18e. [ 13.311022][ T90] RSP: 002b:00007ffe61049378 EFLAGS: 00000256 ORIG_RAX: 00000000000000e7 [ 13.311025][ T90] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f67eeb1a1b8 [ 13.311026][ T90] RDX: 0000000000000000 RSI: fffffffffffffe90 RDI: 0000000000000000 [ 13.311027][ T90] RBP: 00007ffe61049500 R08: 0000560effc2fcf8 R09: 0000000000000000 [ 13.311028][ T90] R10: 0000000000000000 R11: 0000000000000256 R12: 0000000000000000 [ 13.311028][ T90] R13: 00007f67ee378050 R14: 00007f67ef04bd9e R15: 0000560effad61f0 [ 13.311035][ T90]