[ 13.055213][ T81] (udev-worker) (81) used greatest stack depth: 22696 bytes left [ 13.055235][ T81] BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:322 [ 13.055237][ T81] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 81, name: (udev-worker) [ 13.055239][ T81] preempt_count: 2, expected: 0 [ 13.055240][ T81] RCU nest depth: 0, expected: 0 [ 13.055241][ T81] locks held by (udev-worker)/81: 5, last CPU#0: [ 13.055243][ T81] #0: ffffffffa76027b8 (low_water_lock){+.+.}-{3:3}, at: do_exit+0x887/0xdc0 [ 13.055256][ T81] #1: ffffffffa7799dc0 (console_lock){+.+.}-{0:0}, at: vprintk_emit+0x320/0x3e0 [ 13.055262][ T81] #2: ffffffffa7799e38 (console_srcu){....}-{0:0}, at: console_flush_one_record+0x106/0x710 [ 13.055266][ T81] #3: ffffffffa7689760 (console_owner){....}-{0:0}, at: console_lock_spinning_enable+0x40/0x60 [ 13.055270][ T81] #4: ffffffffa7689660 (printk_legacy_map-wait-type-override){....}-{3:3}, at: console_emit_next_record+0x202/0x4f0 [ 13.055274][ T81] irq event stamp: 457920 [ 13.055275][ T81] hardirqs last enabled at (457919): [] __down_trylock_console_sem+0x86/0xa0 [ 13.055278][ T81] hardirqs last disabled at (457920): [] console_emit_next_record+0x3f8/0x4f0 [ 13.055280][ T81] softirqs last enabled at (457856): [] netlink_release+0x17b/0xcf0 [ 13.055284][ T81] softirqs last disabled at (457854): [] netlink_release+0xd2/0xcf0 [ 13.055287][ T81] Preemption disabled at: [ 13.055288][ T81] [<0000000000000000>] 0x0 [ 13.055295][ T81] CPU: 0 UID: 0 PID: 81 Comm: (udev-worker) Tainted: G W 7.2.0-virtme #1 PREEMPT(full) [ 13.055299][ T81] Tainted: [W]=WARN [ 13.055300][ T81] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 13.055302][ T81] Call Trace: [ 13.055303][ T81] [ 13.055305][ T81] dump_stack_lvl+0x6f/0xa0 [ 13.055312][ T81] __might_resched.cold+0x1fe/0x2c1 [ 13.055316][ T81] ? perf_trace_sched_switch+0x7c0/0x7c0 [ 13.055321][ T81] ? __kmalloc_noprof+0xdb/0x760 [ 13.055327][ T81] __kmalloc_noprof+0x443/0x760 [ 13.055330][ T81] ? alloc_buf.isra.0+0x4b/0x260 [ 13.055336][ T81] ? do_raw_spin_unlock+0x59/0x250 [ 13.055339][ T81] alloc_buf.isra.0+0x4b/0x260 [ 13.055343][ T81] put_chars+0x1e1/0x2f0 [ 13.055346][ T81] ? __send_to_port+0x420/0x420 [ 13.055349][ T81] ? printk_get_next_message+0x2fe/0x7d0 [ 13.055352][ T81] ? rcu_read_lock_any_held+0x3c/0x90 [ 13.055355][ T81] ? validate_chain+0x38b/0xc20 [ 13.055359][ T81] hvc_console_print+0x292/0x780 [ 13.055363][ T81] ? __lock_acquire+0x518/0xc20 [ 13.055365][ T81] ? __lock_acquire+0x518/0xc20 [ 13.055369][ T81] ? hvc_write+0x3a0/0x3a0 [ 13.055373][ T81] ? rcu_is_watching+0x16/0xd0 [ 13.055377][ T81] ? lock_acquire+0x13c/0x160 [ 13.055381][ T81] console_emit_next_record+0x252/0x4f0 [ 13.055385][ T81] ? devkmsg_read+0x4e0/0x4e0 [ 13.055389][ T81] ? rcu_is_watching+0x16/0xd0 [ 13.055391][ T81] ? lock_acquire+0x13c/0x160 [ 13.055395][ T81] console_flush_one_record+0x46f/0x710 [ 13.055399][ T81] ? console_emit_next_record+0x4f0/0x4f0 [ 13.055401][ T81] ? __lock_acquire+0x518/0xc20 [ 13.055407][ T81] console_unlock+0xee/0x1f0 [ 13.055410][ T81] ? console_flush_one_record+0x710/0x710 [ 13.055411][ T81] ? rcu_is_watching+0x16/0xd0 [ 13.055414][ T81] ? lock_acquire+0xa0/0x160 [ 13.055417][ T81] ? __down_trylock_console_sem+0x5e/0xa0 [ 13.055419][ T81] ? vprintk_emit+0x320/0x3e0 [ 13.055422][ T81] vprintk_emit+0x37c/0x3e0 [ 13.055426][ T81] ? wake_up_klogd_work_func+0x90/0x90 [ 13.055430][ T81] ? __lock_acquire+0x518/0xc20 [ 13.055433][ T81] _printk+0xc7/0x100 [ 13.055437][ T81] ? snapshot_read.cold+0x21/0x21 [ 13.055440][ T81] ? do_raw_spin_lock+0x131/0x280 [ 13.055442][ T81] ? __rwlock_init+0x150/0x150 [ 13.055446][ T81] ? do_raw_spin_lock+0x131/0x280 [ 13.055449][ T81] do_exit.cold+0x82/0x9c [ 13.055453][ T81] ? exit_notify+0x890/0x890 [ 13.055454][ T81] ? __lock_release.isra.0+0x69/0x1a0 [ 13.055457][ T81] ? rcu_is_watching+0x16/0xd0 [ 13.055461][ T81] do_group_exit+0xb8/0x370 [ 13.055464][ T81] __x64_sys_exit_group+0x3c/0x50 [ 13.055466][ T81] x64_sys_call+0x1567/0x1570 [ 13.055468][ T81] do_syscall_64+0xff/0x530 [ 13.055472][ T81] ? exc_page_fault+0xee/0x100 [ 13.055475][ T81] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 13.055478][ T81] RIP: 0033:0x7f452c0461b8 [ 13.055480][ T81] Code: Unable to access opcode bytes at 0x7f452c04618e. [ 13.055481][ T81] RSP: 002b:00007ffe8eb30b38 EFLAGS: 00000256 ORIG_RAX: 00000000000000e7 [ 13.055484][ T81] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f452c0461b8 [ 13.055485][ T81] RDX: 0000000000000000 RSI: fffffffffffffe90 RDI: 0000000000000000 [ 13.055486][ T81] RBP: 00007ffe8eb30cc0 R08: 00005638ed58df48 R09: 0000000000000000 [ 13.055487][ T81] R10: 0000000000000000 R11: 0000000000000256 R12: 0000000000000000 [ 13.055488][ T81] R13: 00007f452b8a4050 R14: 00007f452c577d9e R15: 00005638ed6d1690 [ 13.055494][ T81]