[ 16.684193][ T187] (udev-worker) (187) used greatest stack depth: 22696 bytes left [ 16.684215][ T187] BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:322 [ 16.684217][ T187] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 187, name: (udev-worker) [ 16.684219][ T187] preempt_count: 2, expected: 0 [ 16.684220][ T187] RCU nest depth: 0, expected: 0 [ 16.684221][ T187] locks held by (udev-worker)/187: 5, last CPU#2: [ 16.684223][ T187] #0: ffffffff996027b8 (low_water_lock){+.+.}-{3:3}, at: do_exit+0x887/0xdc0 [ 16.684235][ T187] #1: ffffffff99799cc0 (console_lock){+.+.}-{0:0}, at: vprintk_emit+0x320/0x3e0 [ 16.684240][ T187] #2: ffffffff99799d38 (console_srcu){....}-{0:0}, at: console_flush_one_record+0x106/0x710 [ 16.684245][ T187] #3: ffffffff99689660 (console_owner){....}-{0:0}, at: console_lock_spinning_enable+0x40/0x60 [ 16.684249][ T187] #4: ffffffff99689560 (printk_legacy_map-wait-type-override){....}-{3:3}, at: console_emit_next_record+0x202/0x4f0 [ 16.684253][ T187] irq event stamp: 488782 [ 16.684254][ T187] hardirqs last enabled at (488781): [] __down_trylock_console_sem+0x86/0xa0 [ 16.684258][ T187] hardirqs last disabled at (488782): [] console_emit_next_record+0x3f8/0x4f0 [ 16.684260][ T187] softirqs last enabled at (488718): [] netlink_release+0x17b/0xcf0 [ 16.684265][ T187] softirqs last disabled at (488716): [] netlink_release+0xd2/0xcf0 [ 16.684267][ T187] Preemption disabled at: [ 16.684268][ T187] [<0000000000000000>] 0x0 [ 16.684276][ T187] CPU: 2 UID: 0 PID: 187 Comm: (udev-worker) Tainted: G W 7.2.0-virtme #1 PREEMPT(full) [ 16.684279][ T187] Tainted: [W]=WARN [ 16.684280][ T187] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 16.684282][ T187] Call Trace: [ 16.684284][ T187] [ 16.684285][ T187] dump_stack_lvl+0x6f/0xa0 [ 16.684292][ T187] __might_resched.cold+0x1fe/0x2c1 [ 16.684296][ T187] ? perf_trace_sched_switch+0x7c0/0x7c0 [ 16.684301][ T187] ? __kmalloc_noprof+0xdb/0x760 [ 16.684307][ T187] __kmalloc_noprof+0x443/0x760 [ 16.684309][ T187] ? alloc_buf.isra.0+0x4b/0x260 [ 16.684316][ T187] ? do_raw_spin_unlock+0x59/0x250 [ 16.684319][ T187] alloc_buf.isra.0+0x4b/0x260 [ 16.684322][ T187] put_chars+0x1e1/0x2f0 [ 16.684325][ T187] ? __send_to_port+0x420/0x420 [ 16.684327][ T187] ? printk_get_next_message+0x2fe/0x7d0 [ 16.684331][ T187] ? rcu_read_lock_any_held+0x3c/0x90 [ 16.684335][ T187] ? validate_chain+0x38b/0xc20 [ 16.684339][ T187] hvc_console_print+0x292/0x780 [ 16.684342][ T187] ? __lock_acquire+0x518/0xc20 [ 16.684344][ T187] ? __lock_acquire+0x518/0xc20 [ 16.684349][ T187] ? hvc_write+0x3a0/0x3a0 [ 16.684352][ T187] ? rcu_is_watching+0x16/0xd0 [ 16.684354][ T187] ? lock_acquire+0x13c/0x160 [ 16.684359][ T187] console_emit_next_record+0x252/0x4f0 [ 16.684363][ T187] ? devkmsg_read+0x4e0/0x4e0 [ 16.684367][ T187] ? rcu_is_watching+0x16/0xd0 [ 16.684369][ T187] ? lock_acquire+0x13c/0x160 [ 16.684373][ T187] console_flush_one_record+0x46f/0x710 [ 16.684378][ T187] ? console_emit_next_record+0x4f0/0x4f0 [ 16.684380][ T187] ? __lock_acquire+0x518/0xc20 [ 16.684385][ T187] console_unlock+0xee/0x1f0 [ 16.684388][ T187] ? console_flush_one_record+0x710/0x710 [ 16.684390][ T187] ? rcu_is_watching+0x16/0xd0 [ 16.684392][ T187] ? lock_acquire+0x60/0x160 [ 16.684396][ T187] ? __down_trylock_console_sem+0x5e/0xa0 [ 16.684398][ T187] ? vprintk_emit+0x320/0x3e0 [ 16.684401][ T187] vprintk_emit+0x37c/0x3e0 [ 16.684404][ T187] ? wake_up_klogd_work_func+0x90/0x90 [ 16.684407][ T187] ? __lock_acquire+0x518/0xc20 [ 16.684411][ T187] _printk+0xc7/0x100 [ 16.684414][ T187] ? snapshot_read.cold+0x21/0x21 [ 16.684417][ T187] ? do_raw_spin_lock+0x131/0x280 [ 16.684420][ T187] ? __rwlock_init+0x150/0x150 [ 16.684424][ T187] ? do_raw_spin_lock+0x131/0x280 [ 16.684427][ T187] do_exit.cold+0x82/0x9c [ 16.684431][ T187] ? exit_notify+0x890/0x890 [ 16.684432][ T187] ? __lock_release.isra.0+0x69/0x1a0 [ 16.684435][ T187] ? rcu_is_watching+0x16/0xd0 [ 16.684439][ T187] do_group_exit+0xb8/0x370 [ 16.684442][ T187] __x64_sys_exit_group+0x3c/0x50 [ 16.684444][ T187] x64_sys_call+0x1567/0x1570 [ 16.684446][ T187] do_syscall_64+0xff/0x530 [ 16.684451][ T187] ? exc_page_fault+0xee/0x100 [ 16.684454][ T187] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 16.684456][ T187] RIP: 0033:0x7f68b01031b8 [ 16.684458][ T187] Code: Unable to access opcode bytes at 0x7f68b010318e. [ 16.684459][ T187] RSP: 002b:00007fff0f16d308 EFLAGS: 00000256 ORIG_RAX: 00000000000000e7 [ 16.684462][ T187] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f68b01031b8 [ 16.684464][ T187] RDX: 0000000000000000 RSI: fffffffffffffe90 RDI: 0000000000000000 [ 16.684465][ T187] RBP: 00007fff0f16d490 R08: 000055fc1b12ba18 R09: 0000000000000000 [ 16.684465][ T187] R10: 0000000000000000 R11: 0000000000000256 R12: 0000000000000000 [ 16.684466][ T187] R13: 00007f68af961050 R14: 00007f68b0634d9e R15: 000055fc1b1416e0 [ 16.684473][ T187]