[ 14.584621][ T184] (udev-worker) (184) used greatest stack depth: 22696 bytes left [ 14.584641][ T184] BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:322 [ 14.584644][ T184] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 184, name: (udev-worker) [ 14.584645][ T184] preempt_count: 2, expected: 0 [ 14.584646][ T184] RCU nest depth: 0, expected: 0 [ 14.584647][ T184] locks held by (udev-worker)/184: 5, last CPU#1: [ 14.584649][ T184] #0: ffffffff87a027b8 (low_water_lock){+.+.}-{3:3}, at: do_exit+0x887/0xdc0 [ 14.584660][ T184] #1: ffffffff87b99cc0 (console_lock){+.+.}-{0:0}, at: vprintk_emit+0x320/0x3e0 [ 14.584665][ T184] #2: ffffffff87b99d38 (console_srcu){....}-{0:0}, at: console_flush_one_record+0x106/0x710 [ 14.584669][ T184] #3: ffffffff87a89660 (console_owner){....}-{0:0}, at: console_lock_spinning_enable+0x40/0x60 [ 14.584673][ T184] #4: ffffffff87a89560 (printk_legacy_map-wait-type-override){....}-{3:3}, at: console_emit_next_record+0x202/0x4f0 [ 14.584677][ T184] irq event stamp: 73430 [ 14.584678][ T184] hardirqs last enabled at (73429): [] __down_trylock_console_sem+0x86/0xa0 [ 14.584681][ T184] hardirqs last disabled at (73430): [] console_emit_next_record+0x3f8/0x4f0 [ 14.584684][ T184] softirqs last enabled at (73364): [] netlink_release+0x17b/0xcf0 [ 14.584688][ T184] softirqs last disabled at (73362): [] netlink_release+0xd2/0xcf0 [ 14.584691][ T184] Preemption disabled at: [ 14.584692][ T184] [<0000000000000000>] 0x0 [ 14.584698][ T184] CPU: 1 UID: 0 PID: 184 Comm: (udev-worker) Tainted: G W 7.2.0-virtme #1 PREEMPT(full) [ 14.584702][ T184] Tainted: [W]=WARN [ 14.584703][ T184] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 14.584705][ T184] Call Trace: [ 14.584706][ T184] [ 14.584708][ T184] dump_stack_lvl+0x6f/0xa0 [ 14.584714][ T184] __might_resched.cold+0x1fe/0x2c1 [ 14.584719][ T184] ? perf_trace_sched_switch+0x7c0/0x7c0 [ 14.584723][ T184] ? __kmalloc_noprof+0xdb/0x760 [ 14.584729][ T184] __kmalloc_noprof+0x443/0x760 [ 14.584731][ T184] ? alloc_buf.isra.0+0x4b/0x260 [ 14.584738][ T184] ? do_raw_spin_unlock+0x59/0x250 [ 14.584741][ T184] alloc_buf.isra.0+0x4b/0x260 [ 14.584744][ T184] put_chars+0x1e1/0x2f0 [ 14.584747][ T184] ? __send_to_port+0x420/0x420 [ 14.584749][ T184] ? printk_get_next_message+0x2fe/0x7d0 [ 14.584753][ T184] ? rcu_read_lock_any_held+0x3c/0x90 [ 14.584756][ T184] ? validate_chain+0x38b/0xc20 [ 14.584761][ T184] hvc_console_print+0x292/0x780 [ 14.584764][ T184] ? __lock_acquire+0x518/0xc20 [ 14.584766][ T184] ? __lock_acquire+0x518/0xc20 [ 14.584770][ T184] ? hvc_write+0x3a0/0x3a0 [ 14.584774][ T184] ? rcu_is_watching+0x16/0xd0 [ 14.584776][ T184] ? lock_acquire+0x13c/0x160 [ 14.584780][ T184] console_emit_next_record+0x252/0x4f0 [ 14.584784][ T184] ? devkmsg_read+0x4e0/0x4e0 [ 14.584788][ T184] ? rcu_is_watching+0x16/0xd0 [ 14.584790][ T184] ? lock_acquire+0x13c/0x160 [ 14.584794][ T184] console_flush_one_record+0x46f/0x710 [ 14.584798][ T184] ? console_emit_next_record+0x4f0/0x4f0 [ 14.584800][ T184] ? __lock_acquire+0x518/0xc20 [ 14.584806][ T184] console_unlock+0xee/0x1f0 [ 14.584809][ T184] ? console_flush_one_record+0x710/0x710 [ 14.584811][ T184] ? rcu_is_watching+0x16/0xd0 [ 14.584812][ T184] ? lock_acquire+0x60/0x160 [ 14.584816][ T184] ? __down_trylock_console_sem+0x5e/0xa0 [ 14.584818][ T184] ? vprintk_emit+0x320/0x3e0 [ 14.584821][ T184] vprintk_emit+0x37c/0x3e0 [ 14.584824][ T184] ? wake_up_klogd_work_func+0x90/0x90 [ 14.584827][ T184] ? __lock_acquire+0x518/0xc20 [ 14.584831][ T184] _printk+0xc7/0x100 [ 14.584834][ T184] ? snapshot_read.cold+0x21/0x21 [ 14.584837][ T184] ? do_raw_spin_lock+0x131/0x280 [ 14.584840][ T184] ? __rwlock_init+0x150/0x150 [ 14.584844][ T184] ? do_raw_spin_lock+0x131/0x280 [ 14.584847][ T184] do_exit.cold+0x82/0x9c [ 14.584851][ T184] ? exit_notify+0x890/0x890 [ 14.584852][ T184] ? __lock_release.isra.0+0x69/0x1a0 [ 14.584855][ T184] ? rcu_is_watching+0x16/0xd0 [ 14.584858][ T184] do_group_exit+0xb8/0x370 [ 14.584861][ T184] __x64_sys_exit_group+0x3c/0x50 [ 14.584863][ T184] x64_sys_call+0x1567/0x1570 [ 14.584865][ T184] do_syscall_64+0xff/0x530 [ 14.584869][ T184] ? irq_exit_rcu+0x1a/0x30 [ 14.584872][ T184] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 14.584874][ T184] RIP: 0033:0x7f773c3531b8 [ 14.584877][ T184] Code: Unable to access opcode bytes at 0x7f773c35318e. [ 14.584878][ T184] RSP: 002b:00007ffd9c473b28 EFLAGS: 00000256 ORIG_RAX: 00000000000000e7 [ 14.584880][ T184] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f773c3531b8 [ 14.584882][ T184] RDX: 0000000000000000 RSI: fffffffffffffe90 RDI: 0000000000000000 [ 14.584883][ T184] RBP: 00007ffd9c473cb0 R08: 00005641eafb3378 R09: 0000000000000000 [ 14.584884][ T184] R10: 0000000000000000 R11: 0000000000000256 R12: 0000000000000000 [ 14.584885][ T184] R13: 00007f773bbb1050 R14: 00007f773c884d9e R15: 00005641eafa92e0 [ 14.584891][ T184]