[ 25.210453][ T180] (udev-worker) (180) used greatest stack depth: 22696 bytes left [ 25.210475][ T180] BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:322 [ 25.210477][ T180] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 180, name: (udev-worker) [ 25.210479][ T180] preempt_count: 2, expected: 0 [ 25.210480][ T180] RCU nest depth: 0, expected: 0 [ 25.210481][ T180] locks held by (udev-worker)/180: 5, last CPU#0: [ 25.210483][ T180] #0: ffffffffb06027b8 (low_water_lock){+.+.}-{3:3}, at: do_exit+0x887/0xdc0 [ 25.210496][ T180] #1: ffffffffb0799cc0 (console_lock){+.+.}-{0:0}, at: vprintk_emit+0x320/0x3e0 [ 25.210501][ T180] #2: ffffffffb0799d38 (console_srcu){....}-{0:0}, at: console_flush_one_record+0x106/0x710 [ 25.210506][ T180] #3: ffffffffb0689660 (console_owner){....}-{0:0}, at: console_lock_spinning_enable+0x40/0x60 [ 25.210510][ T180] #4: ffffffffb0689560 (printk_legacy_map-wait-type-override){....}-{3:3}, at: console_emit_next_record+0x202/0x4f0 [ 25.210515][ T180] irq event stamp: 702170 [ 25.210516][ T180] hardirqs last enabled at (702169): [] __down_trylock_console_sem+0x86/0xa0 [ 25.210518][ T180] hardirqs last disabled at (702170): [] console_emit_next_record+0x3f8/0x4f0 [ 25.210521][ T180] softirqs last enabled at (702106): [] netlink_release+0x17b/0xcf0 [ 25.210525][ T180] softirqs last disabled at (702104): [] netlink_release+0xd2/0xcf0 [ 25.210528][ T180] Preemption disabled at: [ 25.210528][ T180] [<0000000000000000>] 0x0 [ 25.210536][ T180] CPU: 0 UID: 0 PID: 180 Comm: (udev-worker) Tainted: G W 7.2.0-virtme #1 PREEMPT(full) [ 25.210539][ T180] Tainted: [W]=WARN [ 25.210540][ T180] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 25.210542][ T180] Call Trace: [ 25.210544][ T180] [ 25.210545][ T180] dump_stack_lvl+0x6f/0xa0 [ 25.210552][ T180] __might_resched.cold+0x1fe/0x2c1 [ 25.210557][ T180] ? perf_trace_sched_switch+0x7c0/0x7c0 [ 25.210562][ T180] ? __kmalloc_noprof+0xdb/0x760 [ 25.210568][ T180] __kmalloc_noprof+0x443/0x760 [ 25.210571][ T180] ? alloc_buf.isra.0+0x4b/0x260 [ 25.210578][ T180] ? do_raw_spin_unlock+0x59/0x250 [ 25.210581][ T180] alloc_buf.isra.0+0x4b/0x260 [ 25.210585][ T180] put_chars+0x1e1/0x2f0 [ 25.210588][ T180] ? __send_to_port+0x420/0x420 [ 25.210590][ T180] ? printk_get_next_message+0x2fe/0x7d0 [ 25.210593][ T180] ? rcu_read_lock_any_held+0x3c/0x90 [ 25.210597][ T180] ? validate_chain+0x38b/0xc20 [ 25.210602][ T180] hvc_console_print+0x292/0x780 [ 25.210605][ T180] ? __lock_acquire+0x518/0xc20 [ 25.210607][ T180] ? __lock_acquire+0x518/0xc20 [ 25.210612][ T180] ? hvc_write+0x3a0/0x3a0 [ 25.210615][ T180] ? rcu_is_watching+0x16/0xd0 [ 25.210617][ T180] ? lock_acquire+0x13c/0x160 [ 25.210622][ T180] console_emit_next_record+0x252/0x4f0 [ 25.210626][ T180] ? devkmsg_read+0x4e0/0x4e0 [ 25.210631][ T180] ? rcu_is_watching+0x16/0xd0 [ 25.210633][ T180] ? lock_acquire+0x13c/0x160 [ 25.210637][ T180] console_flush_one_record+0x46f/0x710 [ 25.210642][ T180] ? console_emit_next_record+0x4f0/0x4f0 [ 25.210644][ T180] ? __lock_acquire+0x518/0xc20 [ 25.210649][ T180] console_unlock+0xee/0x1f0 [ 25.210652][ T180] ? console_flush_one_record+0x710/0x710 [ 25.210654][ T180] ? rcu_is_watching+0x16/0xd0 [ 25.210656][ T180] ? lock_acquire+0x60/0x160 [ 25.210660][ T180] ? __down_trylock_console_sem+0x5e/0xa0 [ 25.210662][ T180] ? vprintk_emit+0x320/0x3e0 [ 25.210665][ T180] vprintk_emit+0x37c/0x3e0 [ 25.210668][ T180] ? wake_up_klogd_work_func+0x90/0x90 [ 25.210671][ T180] ? __lock_acquire+0x518/0xc20 [ 25.210675][ T180] _printk+0xc7/0x100 [ 25.210679][ T180] ? snapshot_read.cold+0x21/0x21 [ 25.210682][ T180] ? do_raw_spin_lock+0x131/0x280 [ 25.210685][ T180] ? __rwlock_init+0x150/0x150 [ 25.210689][ T180] ? do_raw_spin_lock+0x131/0x280 [ 25.210692][ T180] do_exit.cold+0x82/0x9c [ 25.210696][ T180] ? exit_notify+0x890/0x890 [ 25.210697][ T180] ? __lock_release.isra.0+0x69/0x1a0 [ 25.210700][ T180] ? rcu_is_watching+0x16/0xd0 [ 25.210704][ T180] do_group_exit+0xb8/0x370 [ 25.210707][ T180] __x64_sys_exit_group+0x3c/0x50 [ 25.210709][ T180] x64_sys_call+0x1567/0x1570 [ 25.210712][ T180] do_syscall_64+0xff/0x530 [ 25.210716][ T180] ? exc_page_fault+0xee/0x100 [ 25.210719][ T180] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 25.210721][ T180] RIP: 0033:0x7f7286b111b8 [ 25.210724][ T180] Code: Unable to access opcode bytes at 0x7f7286b1118e. [ 25.210725][ T180] RSP: 002b:00007ffd8dc64ea8 EFLAGS: 00000256 ORIG_RAX: 00000000000000e7 [ 25.210728][ T180] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f7286b111b8 [ 25.210729][ T180] RDX: 0000000000000000 RSI: fffffffffffffe90 RDI: 0000000000000000 [ 25.210730][ T180] RBP: 00007ffd8dc65030 R08: 0000560213a395b8 R09: 0000000000000000 [ 25.210731][ T180] R10: 0000000000000000 R11: 0000000000000256 R12: 0000000000000000 [ 25.210732][ T180] R13: 00007f728636f050 R14: 00007f7287042d9e R15: 00005602138d9420 [ 25.210739][ T180]