[ 12.355229][ T83] (udev-worker) (83) used greatest stack depth: 22696 bytes left [ 12.355248][ T83] BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:322 [ 12.355250][ T83] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 83, name: (udev-worker) [ 12.355252][ T83] preempt_count: 2, expected: 0 [ 12.355253][ T83] RCU nest depth: 0, expected: 0 [ 12.355254][ T83] locks held by (udev-worker)/83: 5, last CPU#2: [ 12.355256][ T83] #0: ffffffff96e027b8 (low_water_lock){+.+.}-{3:3}, at: do_exit+0x887/0xdc0 [ 12.355268][ T83] #1: ffffffff96f99dc0 (console_lock){+.+.}-{0:0}, at: vprintk_emit+0x320/0x3e0 [ 12.355275][ T83] #2: ffffffff96f99e38 (console_srcu){....}-{0:0}, at: console_flush_one_record+0x106/0x710 [ 12.355279][ T83] #3: ffffffff96e89760 (console_owner){....}-{0:0}, at: console_lock_spinning_enable+0x40/0x60 [ 12.355283][ T83] #4: ffffffff96e89660 (printk_legacy_map-wait-type-override){....}-{3:3}, at: console_emit_next_record+0x202/0x4f0 [ 12.355288][ T83] irq event stamp: 470522 [ 12.355289][ T83] hardirqs last enabled at (470521): [] __down_trylock_console_sem+0x86/0xa0 [ 12.355292][ T83] hardirqs last disabled at (470522): [] console_emit_next_record+0x3f8/0x4f0 [ 12.355294][ T83] softirqs last enabled at (470458): [] netlink_release+0x17b/0xcf0 [ 12.355299][ T83] softirqs last disabled at (470456): [] netlink_release+0xd2/0xcf0 [ 12.355302][ T83] Preemption disabled at: [ 12.355302][ T83] [<0000000000000000>] 0x0 [ 12.355310][ T83] CPU: 2 UID: 0 PID: 83 Comm: (udev-worker) Tainted: G W 7.2.0-virtme #1 PREEMPT(full) [ 12.355313][ T83] Tainted: [W]=WARN [ 12.355314][ T83] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 12.355316][ T83] Call Trace: [ 12.355318][ T83] [ 12.355320][ T83] dump_stack_lvl+0x6f/0xa0 [ 12.355326][ T83] __might_resched.cold+0x1fe/0x2c1 [ 12.355331][ T83] ? perf_trace_sched_switch+0x7c0/0x7c0 [ 12.355335][ T83] ? __kmalloc_noprof+0xdb/0x760 [ 12.355340][ T83] __kmalloc_noprof+0x443/0x760 [ 12.355343][ T83] ? alloc_buf.isra.0+0x4b/0x260 [ 12.355350][ T83] ? do_raw_spin_unlock+0x59/0x250 [ 12.355352][ T83] alloc_buf.isra.0+0x4b/0x260 [ 12.355356][ T83] put_chars+0x1e1/0x2f0 [ 12.355360][ T83] ? __send_to_port+0x420/0x420 [ 12.355362][ T83] ? printk_get_next_message+0x2fe/0x7d0 [ 12.355365][ T83] ? rcu_read_lock_any_held+0x3c/0x90 [ 12.355369][ T83] ? validate_chain+0x38b/0xc20 [ 12.355373][ T83] hvc_console_print+0x292/0x780 [ 12.355377][ T83] ? __lock_acquire+0x518/0xc20 [ 12.355378][ T83] ? __lock_acquire+0x518/0xc20 [ 12.355383][ T83] ? hvc_write+0x3a0/0x3a0 [ 12.355386][ T83] ? rcu_is_watching+0x16/0xd0 [ 12.355390][ T83] ? lock_acquire+0x13c/0x160 [ 12.355394][ T83] console_emit_next_record+0x252/0x4f0 [ 12.355398][ T83] ? devkmsg_read+0x4e0/0x4e0 [ 12.355403][ T83] ? rcu_is_watching+0x16/0xd0 [ 12.355405][ T83] ? lock_acquire+0x13c/0x160 [ 12.355409][ T83] console_flush_one_record+0x46f/0x710 [ 12.355413][ T83] ? console_emit_next_record+0x4f0/0x4f0 [ 12.355415][ T83] ? __lock_acquire+0x518/0xc20 [ 12.355421][ T83] console_unlock+0xee/0x1f0 [ 12.355423][ T83] ? console_flush_one_record+0x710/0x710 [ 12.355425][ T83] ? rcu_is_watching+0x16/0xd0 [ 12.355428][ T83] ? lock_acquire+0xa0/0x160 [ 12.355431][ T83] ? __down_trylock_console_sem+0x5e/0xa0 [ 12.355433][ T83] ? vprintk_emit+0x320/0x3e0 [ 12.355437][ T83] vprintk_emit+0x37c/0x3e0 [ 12.355441][ T83] ? wake_up_klogd_work_func+0x90/0x90 [ 12.355445][ T83] ? __lock_acquire+0x518/0xc20 [ 12.355448][ T83] _printk+0xc7/0x100 [ 12.355452][ T83] ? snapshot_read.cold+0x21/0x21 [ 12.355455][ T83] ? do_raw_spin_lock+0x131/0x280 [ 12.355457][ T83] ? __rwlock_init+0x150/0x150 [ 12.355461][ T83] ? do_raw_spin_lock+0x131/0x280 [ 12.355464][ T83] do_exit.cold+0x82/0x9c [ 12.355468][ T83] ? exit_notify+0x890/0x890 [ 12.355469][ T83] ? __lock_release.isra.0+0x69/0x1a0 [ 12.355472][ T83] ? rcu_is_watching+0x16/0xd0 [ 12.355476][ T83] do_group_exit+0xb8/0x370 [ 12.355479][ T83] __x64_sys_exit_group+0x3c/0x50 [ 12.355481][ T83] x64_sys_call+0x1567/0x1570 [ 12.355483][ T83] do_syscall_64+0xff/0x530 [ 12.355487][ T83] ? exc_page_fault+0xee/0x100 [ 12.355490][ T83] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 12.355493][ T83] RIP: 0033:0x7f40373b91b8 [ 12.355495][ T83] Code: Unable to access opcode bytes at 0x7f40373b918e. [ 12.355496][ T83] RSP: 002b:00007ffee9d9cc98 EFLAGS: 00000256 ORIG_RAX: 00000000000000e7 [ 12.355499][ T83] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f40373b91b8 [ 12.355500][ T83] RDX: 0000000000000000 RSI: fffffffffffffe90 RDI: 0000000000000000 [ 12.355501][ T83] RBP: 00007ffee9d9ce20 R08: 000055c7d2b42f48 R09: 0000000000000000 [ 12.355502][ T83] R10: 0000000000000000 R11: 0000000000000256 R12: 0000000000000000 [ 12.355503][ T83] R13: 00007f4036c17050 R14: 00007f40378ead9e R15: 000055c7d2b4a310 [ 12.355510][ T83]