[ 13.175039][ T82] (udev-worker) (82) used greatest stack depth: 22696 bytes left [ 13.175058][ T82] BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:322 [ 13.175061][ T82] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 82, name: (udev-worker) [ 13.175062][ T82] preempt_count: 2, expected: 0 [ 13.175063][ T82] RCU nest depth: 0, expected: 0 [ 13.175064][ T82] locks held by (udev-worker)/82: 5, last CPU#0: [ 13.175066][ T82] #0: ffffffff96e027b8 (low_water_lock){+.+.}-{3:3}, at: do_exit+0x887/0xdc0 [ 13.175079][ T82] #1: ffffffff96f99dc0 (console_lock){+.+.}-{0:0}, at: vprintk_emit+0x320/0x3e0 [ 13.175084][ T82] #2: ffffffff96f99e38 (console_srcu){....}-{0:0}, at: console_flush_one_record+0x106/0x710 [ 13.175089][ T82] #3: ffffffff96e89760 (console_owner){....}-{0:0}, at: console_lock_spinning_enable+0x40/0x60 [ 13.175093][ T82] #4: ffffffff96e89660 (printk_legacy_map-wait-type-override){....}-{3:3}, at: console_emit_next_record+0x202/0x4f0 [ 13.175097][ T82] irq event stamp: 363360 [ 13.175098][ T82] hardirqs last enabled at (363359): [] __down_trylock_console_sem+0x86/0xa0 [ 13.175100][ T82] hardirqs last disabled at (363360): [] console_emit_next_record+0x3f8/0x4f0 [ 13.175103][ T82] softirqs last enabled at (363296): [] netlink_release+0x17b/0xcf0 [ 13.175107][ T82] softirqs last disabled at (363294): [] netlink_release+0xd2/0xcf0 [ 13.175110][ T82] Preemption disabled at: [ 13.175111][ T82] [<0000000000000000>] 0x0 [ 13.175118][ T82] CPU: 0 UID: 0 PID: 82 Comm: (udev-worker) Tainted: G W 7.2.0-virtme #1 PREEMPT(full) [ 13.175121][ T82] Tainted: [W]=WARN [ 13.175122][ T82] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 13.175124][ T82] Call Trace: [ 13.175126][ T82] [ 13.175127][ T82] dump_stack_lvl+0x6f/0xa0 [ 13.175134][ T82] __might_resched.cold+0x1fe/0x2c1 [ 13.175139][ T82] ? perf_trace_sched_switch+0x7c0/0x7c0 [ 13.175144][ T82] ? __kmalloc_noprof+0xdb/0x760 [ 13.175149][ T82] __kmalloc_noprof+0x443/0x760 [ 13.175152][ T82] ? alloc_buf.isra.0+0x4b/0x260 [ 13.175159][ T82] ? do_raw_spin_unlock+0x59/0x250 [ 13.175162][ T82] alloc_buf.isra.0+0x4b/0x260 [ 13.175166][ T82] put_chars+0x1e1/0x2f0 [ 13.175169][ T82] ? __send_to_port+0x420/0x420 [ 13.175172][ T82] ? printk_get_next_message+0x2fe/0x7d0 [ 13.175175][ T82] ? rcu_read_lock_any_held+0x3c/0x90 [ 13.175179][ T82] ? validate_chain+0x38b/0xc20 [ 13.175183][ T82] hvc_console_print+0x292/0x780 [ 13.175187][ T82] ? __lock_acquire+0x518/0xc20 [ 13.175189][ T82] ? __lock_acquire+0x518/0xc20 [ 13.175194][ T82] ? hvc_write+0x3a0/0x3a0 [ 13.175198][ T82] ? rcu_is_watching+0x16/0xd0 [ 13.175202][ T82] ? lock_acquire+0x13c/0x160 [ 13.175206][ T82] console_emit_next_record+0x252/0x4f0 [ 13.175212][ T82] ? devkmsg_read+0x4e0/0x4e0 [ 13.175219][ T82] ? rcu_is_watching+0x16/0xd0 [ 13.175222][ T82] ? lock_acquire+0x13c/0x160 [ 13.175227][ T82] console_flush_one_record+0x46f/0x710 [ 13.175232][ T82] ? console_emit_next_record+0x4f0/0x4f0 [ 13.175234][ T82] ? __lock_acquire+0x518/0xc20 [ 13.175240][ T82] console_unlock+0xee/0x1f0 [ 13.175243][ T82] ? console_flush_one_record+0x710/0x710 [ 13.175245][ T82] ? rcu_is_watching+0x16/0xd0 [ 13.175248][ T82] ? lock_acquire+0xa0/0x160 [ 13.175252][ T82] ? __down_trylock_console_sem+0x5e/0xa0 [ 13.175254][ T82] ? vprintk_emit+0x320/0x3e0 [ 13.175258][ T82] vprintk_emit+0x37c/0x3e0 [ 13.175262][ T82] ? wake_up_klogd_work_func+0x90/0x90 [ 13.175266][ T82] ? __lock_acquire+0x518/0xc20 [ 13.175270][ T82] _printk+0xc7/0x100 [ 13.175273][ T82] ? snapshot_read.cold+0x21/0x21 [ 13.175278][ T82] ? do_raw_spin_lock+0x131/0x280 [ 13.175283][ T82] ? __rwlock_init+0x150/0x150 [ 13.175287][ T82] ? do_raw_spin_lock+0x131/0x280 [ 13.175290][ T82] do_exit.cold+0x82/0x9c [ 13.175294][ T82] ? exit_notify+0x890/0x890 [ 13.175296][ T82] ? __lock_release.isra.0+0x69/0x1a0 [ 13.175299][ T82] ? rcu_is_watching+0x16/0xd0 [ 13.175303][ T82] do_group_exit+0xb8/0x370 [ 13.175306][ T82] __x64_sys_exit_group+0x3c/0x50 [ 13.175308][ T82] x64_sys_call+0x1567/0x1570 [ 13.175310][ T82] do_syscall_64+0xff/0x530 [ 13.175314][ T82] ? exc_page_fault+0xee/0x100 [ 13.175317][ T82] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 13.175320][ T82] RIP: 0033:0x7f18ba1271b8 [ 13.175322][ T82] Code: Unable to access opcode bytes at 0x7f18ba12718e. [ 13.175323][ T82] RSP: 002b:00007ffd56c62e18 EFLAGS: 00000256 ORIG_RAX: 00000000000000e7 [ 13.175326][ T82] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f18ba1271b8 [ 13.175327][ T82] RDX: 0000000000000000 RSI: fffffffffffffe90 RDI: 0000000000000000 [ 13.175328][ T82] RBP: 00007ffd56c62fa0 R08: 000055ba0845ef48 R09: 0000000000000000 [ 13.175329][ T82] R10: 0000000000000000 R11: 0000000000000256 R12: 0000000000000000 [ 13.175330][ T82] R13: 00007f18b9985050 R14: 00007f18ba658d9e R15: 000055ba085a26e0 [ 13.175337][ T82]