[ 16.402893][ T180] (udev-worker) (180) used greatest stack depth: 22696 bytes left [ 16.402913][ T180] BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:322 [ 16.402915][ T180] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 180, name: (udev-worker) [ 16.402917][ T180] preempt_count: 2, expected: 0 [ 16.402918][ T180] RCU nest depth: 0, expected: 0 [ 16.402919][ T180] locks held by (udev-worker)/180: 5, last CPU#3: [ 16.402921][ T180] #0: ffffffff85a027b8 (low_water_lock){+.+.}-{3:3}, at: do_exit+0x887/0xdc0 [ 16.402937][ T180] #1: ffffffff85b99cc0 (console_lock){+.+.}-{0:0}, at: vprintk_emit+0x320/0x3e0 [ 16.402942][ T180] #2: ffffffff85b99d38 (console_srcu){....}-{0:0}, at: console_flush_one_record+0x106/0x710 [ 16.402947][ T180] #3: ffffffff85a89660 (console_owner){....}-{0:0}, at: console_lock_spinning_enable+0x40/0x60 [ 16.402951][ T180] #4: ffffffff85a89560 (printk_legacy_map-wait-type-override){....}-{3:3}, at: console_emit_next_record+0x202/0x4f0 [ 16.402955][ T180] irq event stamp: 354138 [ 16.402955][ T180] hardirqs last enabled at (354137): [] __down_trylock_console_sem+0x86/0xa0 [ 16.402958][ T180] hardirqs last disabled at (354138): [] console_emit_next_record+0x3f8/0x4f0 [ 16.402961][ T180] softirqs last enabled at (354074): [] netlink_release+0x17b/0xcf0 [ 16.402965][ T180] softirqs last disabled at (354072): [] netlink_release+0xd2/0xcf0 [ 16.402968][ T180] Preemption disabled at: [ 16.402968][ T180] [<0000000000000000>] 0x0 [ 16.402976][ T180] CPU: 3 UID: 0 PID: 180 Comm: (udev-worker) Tainted: G W 7.2.0-virtme #1 PREEMPT(full) [ 16.402979][ T180] Tainted: [W]=WARN [ 16.402980][ T180] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 16.402982][ T180] Call Trace: [ 16.402984][ T180] [ 16.402985][ T180] dump_stack_lvl+0x6f/0xa0 [ 16.402992][ T180] __might_resched.cold+0x1fe/0x2c1 [ 16.402997][ T180] ? perf_trace_sched_switch+0x7c0/0x7c0 [ 16.403001][ T180] ? __kmalloc_noprof+0xdb/0x760 [ 16.403006][ T180] __kmalloc_noprof+0x443/0x760 [ 16.403009][ T180] ? alloc_buf.isra.0+0x4b/0x260 [ 16.403015][ T180] ? do_raw_spin_unlock+0x59/0x250 [ 16.403018][ T180] alloc_buf.isra.0+0x4b/0x260 [ 16.403022][ T180] put_chars+0x1e1/0x2f0 [ 16.403025][ T180] ? __send_to_port+0x420/0x420 [ 16.403027][ T180] ? printk_get_next_message+0x2fe/0x7d0 [ 16.403030][ T180] ? rcu_read_lock_any_held+0x3c/0x90 [ 16.403034][ T180] ? validate_chain+0x38b/0xc20 [ 16.403039][ T180] hvc_console_print+0x292/0x780 [ 16.403042][ T180] ? __lock_acquire+0x518/0xc20 [ 16.403044][ T180] ? __lock_acquire+0x518/0xc20 [ 16.403048][ T180] ? hvc_write+0x3a0/0x3a0 [ 16.403052][ T180] ? rcu_is_watching+0x16/0xd0 [ 16.403054][ T180] ? lock_acquire+0x13c/0x160 [ 16.403058][ T180] console_emit_next_record+0x252/0x4f0 [ 16.403062][ T180] ? devkmsg_read+0x4e0/0x4e0 [ 16.403067][ T180] ? rcu_is_watching+0x16/0xd0 [ 16.403068][ T180] ? lock_acquire+0x13c/0x160 [ 16.403072][ T180] console_flush_one_record+0x46f/0x710 [ 16.403077][ T180] ? console_emit_next_record+0x4f0/0x4f0 [ 16.403079][ T180] ? __lock_acquire+0x518/0xc20 [ 16.403084][ T180] console_unlock+0xee/0x1f0 [ 16.403087][ T180] ? console_flush_one_record+0x710/0x710 [ 16.403089][ T180] ? rcu_is_watching+0x16/0xd0 [ 16.403091][ T180] ? lock_acquire+0x60/0x160 [ 16.403094][ T180] ? __down_trylock_console_sem+0x5e/0xa0 [ 16.403096][ T180] ? vprintk_emit+0x320/0x3e0 [ 16.403099][ T180] vprintk_emit+0x37c/0x3e0 [ 16.403102][ T180] ? wake_up_klogd_work_func+0x90/0x90 [ 16.403105][ T180] ? __lock_acquire+0x518/0xc20 [ 16.403109][ T180] _printk+0xc7/0x100 [ 16.403112][ T180] ? snapshot_read.cold+0x21/0x21 [ 16.403115][ T180] ? do_raw_spin_lock+0x131/0x280 [ 16.403118][ T180] ? __rwlock_init+0x150/0x150 [ 16.403122][ T180] ? do_raw_spin_lock+0x131/0x280 [ 16.403125][ T180] do_exit.cold+0x82/0x9c [ 16.403128][ T180] ? exit_notify+0x890/0x890 [ 16.403130][ T180] ? __lock_release.isra.0+0x69/0x1a0 [ 16.403133][ T180] ? rcu_is_watching+0x16/0xd0 [ 16.403136][ T180] do_group_exit+0xb8/0x370 [ 16.403139][ T180] __x64_sys_exit_group+0x3c/0x50 [ 16.403141][ T180] x64_sys_call+0x1567/0x1570 [ 16.403143][ T180] do_syscall_64+0xff/0x530 [ 16.403147][ T180] ? exc_page_fault+0xee/0x100 [ 16.403150][ T180] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 16.403152][ T180] RIP: 0033:0x7f4dd5ded1b8 [ 16.403154][ T180] Code: Unable to access opcode bytes at 0x7f4dd5ded18e. [ 16.403155][ T180] RSP: 002b:00007fff01c17a68 EFLAGS: 00000256 ORIG_RAX: 00000000000000e7 [ 16.403158][ T180] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f4dd5ded1b8 [ 16.403160][ T180] RDX: 0000000000000000 RSI: fffffffffffffe90 RDI: 0000000000000000 [ 16.403160][ T180] RBP: 00007fff01c17bf0 R08: 000056210b041f98 R09: 0000000000000000 [ 16.403161][ T180] R10: 0000000000000000 R11: 0000000000000256 R12: 0000000000000000 [ 16.403162][ T180] R13: 00007f4dd564b050 R14: 00007f4dd631ed9e R15: 000056210aead460 [ 16.403169][ T180]