[ 14.983154][ T184] (udev-worker) (184) used greatest stack depth: 22696 bytes left [ 14.983174][ T184] BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:322 [ 14.983176][ T184] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 184, name: (udev-worker) [ 14.983178][ T184] preempt_count: 2, expected: 0 [ 14.983179][ T184] RCU nest depth: 0, expected: 0 [ 14.983180][ T184] locks held by (udev-worker)/184: 5, last CPU#0: [ 14.983182][ T184] #0: ffffffffafe027b8 (low_water_lock){+.+.}-{3:3}, at: do_exit+0x887/0xdc0 [ 14.983195][ T184] #1: ffffffffaff99cc0 (console_lock){+.+.}-{0:0}, at: vprintk_emit+0x320/0x3e0 [ 14.983199][ T184] #2: ffffffffaff99d38 (console_srcu){....}-{0:0}, at: console_flush_one_record+0x106/0x710 [ 14.983204][ T184] #3: ffffffffafe89660 (console_owner){....}-{0:0}, at: console_lock_spinning_enable+0x40/0x60 [ 14.983208][ T184] #4: ffffffffafe89560 (printk_legacy_map-wait-type-override){....}-{3:3}, at: console_emit_next_record+0x202/0x4f0 [ 14.983212][ T184] irq event stamp: 75146 [ 14.983213][ T184] hardirqs last enabled at (75145): [] __down_trylock_console_sem+0x86/0xa0 [ 14.983216][ T184] hardirqs last disabled at (75146): [] console_emit_next_record+0x3f8/0x4f0 [ 14.983218][ T184] softirqs last enabled at (75082): [] netlink_release+0x17b/0xcf0 [ 14.983222][ T184] softirqs last disabled at (75080): [] netlink_release+0xd2/0xcf0 [ 14.983225][ T184] Preemption disabled at: [ 14.983225][ T184] [<0000000000000000>] 0x0 [ 14.983232][ T184] CPU: 0 UID: 0 PID: 184 Comm: (udev-worker) Tainted: G W 7.2.0-virtme #1 PREEMPT(full) [ 14.983236][ T184] Tainted: [W]=WARN [ 14.983237][ T184] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 14.983239][ T184] Call Trace: [ 14.983240][ T184] [ 14.983242][ T184] dump_stack_lvl+0x6f/0xa0 [ 14.983248][ T184] __might_resched.cold+0x1fe/0x2c1 [ 14.983253][ T184] ? perf_trace_sched_switch+0x7c0/0x7c0 [ 14.983257][ T184] ? __kmalloc_noprof+0xdb/0x760 [ 14.983262][ T184] __kmalloc_noprof+0x443/0x760 [ 14.983264][ T184] ? alloc_buf.isra.0+0x4b/0x260 [ 14.983271][ T184] ? do_raw_spin_unlock+0x59/0x250 [ 14.983274][ T184] alloc_buf.isra.0+0x4b/0x260 [ 14.983277][ T184] put_chars+0x1e1/0x2f0 [ 14.983280][ T184] ? __send_to_port+0x420/0x420 [ 14.983282][ T184] ? printk_get_next_message+0x2fe/0x7d0 [ 14.983286][ T184] ? rcu_read_lock_any_held+0x3c/0x90 [ 14.983290][ T184] ? validate_chain+0x38b/0xc20 [ 14.983295][ T184] hvc_console_print+0x292/0x780 [ 14.983298][ T184] ? __lock_acquire+0x518/0xc20 [ 14.983300][ T184] ? __lock_acquire+0x518/0xc20 [ 14.983304][ T184] ? hvc_write+0x3a0/0x3a0 [ 14.983308][ T184] ? rcu_is_watching+0x16/0xd0 [ 14.983310][ T184] ? lock_acquire+0x13c/0x160 [ 14.983314][ T184] console_emit_next_record+0x252/0x4f0 [ 14.983318][ T184] ? devkmsg_read+0x4e0/0x4e0 [ 14.983327][ T184] ? rcu_is_watching+0x16/0xd0 [ 14.983329][ T184] ? lock_acquire+0x13c/0x160 [ 14.983333][ T184] console_flush_one_record+0x46f/0x710 [ 14.983338][ T184] ? console_emit_next_record+0x4f0/0x4f0 [ 14.983340][ T184] ? __lock_acquire+0x518/0xc20 [ 14.983346][ T184] console_unlock+0xee/0x1f0 [ 14.983349][ T184] ? console_flush_one_record+0x710/0x710 [ 14.983350][ T184] ? rcu_is_watching+0x16/0xd0 [ 14.983352][ T184] ? lock_acquire+0x60/0x160 [ 14.983356][ T184] ? __down_trylock_console_sem+0x5e/0xa0 [ 14.983358][ T184] ? vprintk_emit+0x320/0x3e0 [ 14.983361][ T184] vprintk_emit+0x37c/0x3e0 [ 14.983364][ T184] ? wake_up_klogd_work_func+0x90/0x90 [ 14.983367][ T184] ? __lock_acquire+0x518/0xc20 [ 14.983371][ T184] _printk+0xc7/0x100 [ 14.983374][ T184] ? snapshot_read.cold+0x21/0x21 [ 14.983377][ T184] ? do_raw_spin_lock+0x131/0x280 [ 14.983380][ T184] ? __rwlock_init+0x150/0x150 [ 14.983384][ T184] ? do_raw_spin_lock+0x131/0x280 [ 14.983386][ T184] do_exit.cold+0x82/0x9c [ 14.983390][ T184] ? exit_notify+0x890/0x890 [ 14.983392][ T184] ? __lock_release.isra.0+0x69/0x1a0 [ 14.983395][ T184] ? rcu_is_watching+0x16/0xd0 [ 14.983398][ T184] do_group_exit+0xb8/0x370 [ 14.983401][ T184] __x64_sys_exit_group+0x3c/0x50 [ 14.983403][ T184] x64_sys_call+0x1567/0x1570 [ 14.983405][ T184] do_syscall_64+0xff/0x530 [ 14.983409][ T184] ? irq_exit_rcu+0x1a/0x30 [ 14.983412][ T184] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 14.983415][ T184] RIP: 0033:0x7f584dd5d1b8 [ 14.983417][ T184] Code: Unable to access opcode bytes at 0x7f584dd5d18e. [ 14.983418][ T184] RSP: 002b:00007ffd3eee3428 EFLAGS: 00000256 ORIG_RAX: 00000000000000e7 [ 14.983421][ T184] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f584dd5d1b8 [ 14.983422][ T184] RDX: 0000000000000000 RSI: fffffffffffffe90 RDI: 0000000000000000 [ 14.983423][ T184] RBP: 00007ffd3eee35b0 R08: 000055a5f904d308 R09: 0000000000000000 [ 14.983424][ T184] R10: 0000000000000000 R11: 0000000000000256 R12: 0000000000000000 [ 14.983425][ T184] R13: 00007f584d5bb050 R14: 00007f584e28ed9e R15: 000055a5f8ecd3e0 [ 14.983432][ T184]