[ 13.684527][ T92] (udev-worker) (92) used greatest stack depth: 22696 bytes left [ 13.684548][ T92] BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:322 [ 13.684551][ T92] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 92, name: (udev-worker) [ 13.684552][ T92] preempt_count: 2, expected: 0 [ 13.684553][ T92] RCU nest depth: 0, expected: 0 [ 13.684554][ T92] locks held by (udev-worker)/92: 5, last CPU#2: [ 13.684557][ T92] #0: ffffffff858027b8 (low_water_lock){+.+.}-{3:3}, at: do_exit+0x887/0xdc0 [ 13.684571][ T92] #1: ffffffff85969cc0 (console_lock){+.+.}-{0:0}, at: vprintk_emit+0x320/0x3e0 [ 13.684577][ T92] #2: ffffffff85969d38 (console_srcu){....}-{0:0}, at: console_flush_one_record+0x106/0x710 [ 13.684581][ T92] #3: ffffffff85889660 (console_owner){....}-{0:0}, at: console_lock_spinning_enable+0x40/0x60 [ 13.684584][ T92] #4: ffffffff85889560 (printk_legacy_map-wait-type-override){....}-{3:3}, at: console_emit_next_record+0x1df/0x4c0 [ 13.684588][ T92] irq event stamp: 522082 [ 13.684589][ T92] hardirqs last enabled at (522081): [] __down_trylock_console_sem+0x86/0xa0 [ 13.684592][ T92] hardirqs last disabled at (522082): [] console_emit_next_record+0x3d4/0x4c0 [ 13.684594][ T92] softirqs last enabled at (522018): [] netlink_release+0x17b/0xcf0 [ 13.684598][ T92] softirqs last disabled at (522016): [] netlink_release+0xd2/0xcf0 [ 13.684600][ T92] Preemption disabled at: [ 13.684601][ T92] [<0000000000000000>] 0x0 [ 13.684609][ T92] CPU: 2 UID: 0 PID: 92 Comm: (udev-worker) Tainted: G W 7.2.0-virtme #1 PREEMPT(full) [ 13.684612][ T92] Tainted: [W]=WARN [ 13.684613][ T92] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 13.684615][ T92] Call Trace: [ 13.684616][ T92] [ 13.684618][ T92] dump_stack_lvl+0x6f/0xa0 [ 13.684624][ T92] __might_resched.cold+0x1fe/0x2c1 [ 13.684629][ T92] ? perf_trace_sched_switch+0x7c0/0x7c0 [ 13.684633][ T92] ? __kmalloc_noprof+0xdb/0x760 [ 13.684638][ T92] __kmalloc_noprof+0x443/0x760 [ 13.684641][ T92] ? alloc_buf.isra.0+0x4b/0x260 [ 13.684647][ T92] ? do_raw_spin_unlock+0x59/0x250 [ 13.684650][ T92] alloc_buf.isra.0+0x4b/0x260 [ 13.684654][ T92] put_chars+0x1e1/0x2f0 [ 13.684657][ T92] ? __send_to_port+0x420/0x420 [ 13.684659][ T92] ? rcu_lockdep_current_cpu_online+0x3f/0x1b0 [ 13.684664][ T92] ? validate_chain+0x38b/0xc20 [ 13.684669][ T92] hvc_console_print+0x292/0x780 [ 13.684676][ T92] ? hvc_write+0x3a0/0x3a0 [ 13.684679][ T92] ? rcu_is_watching+0x16/0xd0 [ 13.684681][ T92] ? lock_acquire+0x13c/0x160 [ 13.684685][ T92] console_emit_next_record+0x22f/0x4c0 [ 13.684689][ T92] ? devkmsg_read+0x4b0/0x4b0 [ 13.684691][ T92] ? console_flush_one_record+0x106/0x710 [ 13.684694][ T92] ? rcu_is_watching+0x16/0xd0 [ 13.684696][ T92] ? lock_acquire+0x13c/0x160 [ 13.684700][ T92] console_flush_one_record+0x46f/0x710 [ 13.684704][ T92] ? console_emit_next_record+0x4c0/0x4c0 [ 13.684706][ T92] ? __lock_acquire+0x518/0xc20 [ 13.684711][ T92] console_unlock+0xee/0x1f0 [ 13.684714][ T92] ? console_flush_one_record+0x710/0x710 [ 13.684715][ T92] ? rcu_is_watching+0x16/0xd0 [ 13.684717][ T92] ? lock_acquire+0x60/0x160 [ 13.684721][ T92] ? __down_trylock_console_sem+0x5e/0xa0 [ 13.684723][ T92] ? vprintk_emit+0x320/0x3e0 [ 13.684726][ T92] vprintk_emit+0x37c/0x3e0 [ 13.684730][ T92] ? wake_up_klogd_work_func+0x90/0x90 [ 13.684733][ T92] ? __lock_acquire+0x518/0xc20 [ 13.684737][ T92] _printk+0xc7/0x100 [ 13.684741][ T92] ? snapshot_read.cold+0x21/0x21 [ 13.684744][ T92] ? do_raw_spin_lock+0x131/0x280 [ 13.684746][ T92] ? __rwlock_init+0x150/0x150 [ 13.684750][ T92] ? do_raw_spin_lock+0x131/0x280 [ 13.684752][ T92] do_exit.cold+0x82/0x9c [ 13.684756][ T92] ? exit_notify+0x890/0x890 [ 13.684758][ T92] ? __lock_release.isra.0+0x69/0x1a0 [ 13.684761][ T92] ? rcu_is_watching+0x16/0xd0 [ 13.684765][ T92] do_group_exit+0xb8/0x370 [ 13.684768][ T92] __x64_sys_exit_group+0x3c/0x50 [ 13.684771][ T92] x64_sys_call+0x1567/0x1570 [ 13.684773][ T92] do_syscall_64+0xff/0x530 [ 13.684777][ T92] ? exc_page_fault+0xee/0x100 [ 13.684780][ T92] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 13.684782][ T92] RIP: 0033:0x7f6ee56cc1b8 [ 13.684785][ T92] Code: Unable to access opcode bytes at 0x7f6ee56cc18e. [ 13.684786][ T92] RSP: 002b:00007ffc1579e978 EFLAGS: 00000256 ORIG_RAX: 00000000000000e7 [ 13.684789][ T92] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f6ee56cc1b8 [ 13.684790][ T92] RDX: 0000000000000000 RSI: fffffffffffffe90 RDI: 0000000000000000 [ 13.684791][ T92] RBP: 00007ffc1579eb00 R08: 000055c1008febd8 R09: 0000000000000000 [ 13.684792][ T92] R10: 0000000000000000 R11: 0000000000000256 R12: 0000000000000000 [ 13.684793][ T92] R13: 00007f6ee4f2a050 R14: 00007f6ee5bfdd9e R15: 000055c1007a7ca0 [ 13.684800][ T92]