[ 15.436282][ T180] (udev-worker) (180) used greatest stack depth: 22696 bytes left [ 15.436303][ T180] BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:322 [ 15.436306][ T180] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 180, name: (udev-worker) [ 15.436307][ T180] preempt_count: 2, expected: 0 [ 15.436308][ T180] RCU nest depth: 0, expected: 0 [ 15.436309][ T180] locks held by (udev-worker)/180: 5, last CPU#3: [ 15.436311][ T180] #0: ffffffff88c027b8 (low_water_lock){+.+.}-{3:3}, at: do_exit+0x887/0xdc0 [ 15.436323][ T180] #1: ffffffff88d99cc0 (console_lock){+.+.}-{0:0}, at: vprintk_emit+0x320/0x3e0 [ 15.436328][ T180] #2: ffffffff88d99d38 (console_srcu){....}-{0:0}, at: console_flush_one_record+0x106/0x710 [ 15.436332][ T180] #3: ffffffff88c89660 (console_owner){....}-{0:0}, at: console_lock_spinning_enable+0x40/0x60 [ 15.436336][ T180] #4: ffffffff88c89560 (printk_legacy_map-wait-type-override){....}-{3:3}, at: console_emit_next_record+0x202/0x4f0 [ 15.436340][ T180] irq event stamp: 147398 [ 15.436341][ T180] hardirqs last enabled at (147397): [] __down_trylock_console_sem+0x86/0xa0 [ 15.436344][ T180] hardirqs last disabled at (147398): [] console_emit_next_record+0x3f8/0x4f0 [ 15.436346][ T180] softirqs last enabled at (147334): [] netlink_release+0x17b/0xcf0 [ 15.436350][ T180] softirqs last disabled at (147332): [] netlink_release+0xd2/0xcf0 [ 15.436353][ T180] Preemption disabled at: [ 15.436354][ T180] [<0000000000000000>] 0x0 [ 15.436361][ T180] CPU: 3 UID: 0 PID: 180 Comm: (udev-worker) Tainted: G W 7.2.0-virtme #1 PREEMPT(full) [ 15.436365][ T180] Tainted: [W]=WARN [ 15.436366][ T180] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 15.436367][ T180] Call Trace: [ 15.436369][ T180] [ 15.436371][ T180] dump_stack_lvl+0x6f/0xa0 [ 15.436377][ T180] __might_resched.cold+0x1fe/0x2c1 [ 15.436382][ T180] ? perf_trace_sched_switch+0x7c0/0x7c0 [ 15.436386][ T180] ? __kmalloc_noprof+0xdb/0x760 [ 15.436392][ T180] __kmalloc_noprof+0x443/0x760 [ 15.436394][ T180] ? alloc_buf.isra.0+0x4b/0x260 [ 15.436401][ T180] ? do_raw_spin_unlock+0x59/0x250 [ 15.436403][ T180] alloc_buf.isra.0+0x4b/0x260 [ 15.436407][ T180] put_chars+0x1e1/0x2f0 [ 15.436410][ T180] ? __send_to_port+0x420/0x420 [ 15.436412][ T180] ? printk_get_next_message+0x2fe/0x7d0 [ 15.436416][ T180] ? rcu_read_lock_any_held+0x3c/0x90 [ 15.436419][ T180] ? validate_chain+0x38b/0xc20 [ 15.436424][ T180] hvc_console_print+0x292/0x780 [ 15.436427][ T180] ? __lock_acquire+0x518/0xc20 [ 15.436429][ T180] ? __lock_acquire+0x518/0xc20 [ 15.436433][ T180] ? hvc_write+0x3a0/0x3a0 [ 15.436437][ T180] ? rcu_is_watching+0x16/0xd0 [ 15.436439][ T180] ? lock_acquire+0x13c/0x160 [ 15.436443][ T180] console_emit_next_record+0x252/0x4f0 [ 15.436447][ T180] ? devkmsg_read+0x4e0/0x4e0 [ 15.436452][ T180] ? rcu_is_watching+0x16/0xd0 [ 15.436453][ T180] ? lock_acquire+0x13c/0x160 [ 15.436457][ T180] console_flush_one_record+0x46f/0x710 [ 15.436462][ T180] ? console_emit_next_record+0x4f0/0x4f0 [ 15.436464][ T180] ? __lock_acquire+0x518/0xc20 [ 15.436469][ T180] console_unlock+0xee/0x1f0 [ 15.436472][ T180] ? console_flush_one_record+0x710/0x710 [ 15.436474][ T180] ? rcu_is_watching+0x16/0xd0 [ 15.436476][ T180] ? lock_acquire+0x60/0x160 [ 15.436479][ T180] ? __down_trylock_console_sem+0x5e/0xa0 [ 15.436481][ T180] ? vprintk_emit+0x320/0x3e0 [ 15.436484][ T180] vprintk_emit+0x37c/0x3e0 [ 15.436487][ T180] ? wake_up_klogd_work_func+0x90/0x90 [ 15.436490][ T180] ? __lock_acquire+0x518/0xc20 [ 15.436494][ T180] _printk+0xc7/0x100 [ 15.436498][ T180] ? snapshot_read.cold+0x21/0x21 [ 15.436500][ T180] ? do_raw_spin_lock+0x131/0x280 [ 15.436503][ T180] ? __rwlock_init+0x150/0x150 [ 15.436507][ T180] ? do_raw_spin_lock+0x131/0x280 [ 15.436510][ T180] do_exit.cold+0x82/0x9c [ 15.436514][ T180] ? exit_notify+0x890/0x890 [ 15.436516][ T180] ? __lock_release.isra.0+0x69/0x1a0 [ 15.436518][ T180] ? rcu_is_watching+0x16/0xd0 [ 15.436522][ T180] do_group_exit+0xb8/0x370 [ 15.436525][ T180] __x64_sys_exit_group+0x3c/0x50 [ 15.436527][ T180] x64_sys_call+0x1567/0x1570 [ 15.436529][ T180] do_syscall_64+0xff/0x530 [ 15.436533][ T180] ? exc_page_fault+0xee/0x100 [ 15.436536][ T180] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 15.436538][ T180] RIP: 0033:0x7f7c6dee01b8 [ 15.436540][ T180] Code: Unable to access opcode bytes at 0x7f7c6dee018e. [ 15.436541][ T180] RSP: 002b:00007fff520e59a8 EFLAGS: 00000256 ORIG_RAX: 00000000000000e7 [ 15.436544][ T180] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f7c6dee01b8 [ 15.436545][ T180] RDX: 0000000000000000 RSI: fffffffffffffe90 RDI: 0000000000000000 [ 15.436546][ T180] RBP: 00007fff520e5b30 R08: 000055dcf038ec78 R09: 0000000000000000 [ 15.436547][ T180] R10: 0000000000000000 R11: 0000000000000256 R12: 0000000000000000 [ 15.436548][ T180] R13: 00007f7c6d73e050 R14: 00007f7c6e411d9e R15: 000055dcf039d690 [ 15.436555][ T180]