[ 22.352483][ T182] (udev-worker) (182) used greatest stack depth: 22696 bytes left [ 22.352505][ T182] BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:322 [ 22.352507][ T182] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 182, name: (udev-worker) [ 22.352509][ T182] preempt_count: 2, expected: 0 [ 22.352511][ T182] RCU nest depth: 0, expected: 0 [ 22.352512][ T182] locks held by (udev-worker)/182: 5, last CPU#2: [ 22.352514][ T182] #0: ffffffff8a2027b8 (low_water_lock){+.+.}-{3:3}, at: do_exit+0x887/0xdc0 [ 22.352532][ T182] #1: ffffffff8a399cc0 (console_lock){+.+.}-{0:0}, at: vprintk_emit+0x320/0x3e0 [ 22.352538][ T182] #2: ffffffff8a399d38 (console_srcu){....}-{0:0}, at: console_flush_one_record+0x106/0x710 [ 22.352543][ T182] #3: ffffffff8a289660 (console_owner){....}-{0:0}, at: console_lock_spinning_enable+0x40/0x60 [ 22.352547][ T182] #4: ffffffff8a289560 (printk_legacy_map-wait-type-override){....}-{3:3}, at: console_emit_next_record+0x202/0x4f0 [ 22.352552][ T182] irq event stamp: 672362 [ 22.352552][ T182] hardirqs last enabled at (672361): [] __down_trylock_console_sem+0x86/0xa0 [ 22.352556][ T182] hardirqs last disabled at (672362): [] console_emit_next_record+0x3f8/0x4f0 [ 22.352558][ T182] softirqs last enabled at (672264): [] netlink_release+0x17b/0xcf0 [ 22.352563][ T182] softirqs last disabled at (672262): [] netlink_release+0xd2/0xcf0 [ 22.352565][ T182] Preemption disabled at: [ 22.352566][ T182] [<0000000000000000>] 0x0 [ 22.352573][ T182] CPU: 2 UID: 0 PID: 182 Comm: (udev-worker) Tainted: G W 7.2.0-virtme #1 PREEMPT(full) [ 22.352577][ T182] Tainted: [W]=WARN [ 22.352577][ T182] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 22.352579][ T182] Call Trace: [ 22.352581][ T182] [ 22.352583][ T182] dump_stack_lvl+0x6f/0xa0 [ 22.352590][ T182] __might_resched.cold+0x1fe/0x2c1 [ 22.352595][ T182] ? perf_trace_sched_switch+0x7c0/0x7c0 [ 22.352600][ T182] ? __kmalloc_noprof+0xdb/0x760 [ 22.352606][ T182] __kmalloc_noprof+0x443/0x760 [ 22.352609][ T182] ? alloc_buf.isra.0+0x4b/0x260 [ 22.352616][ T182] ? do_raw_spin_unlock+0x59/0x250 [ 22.352619][ T182] alloc_buf.isra.0+0x4b/0x260 [ 22.352624][ T182] put_chars+0x1e1/0x2f0 [ 22.352628][ T182] ? __send_to_port+0x420/0x420 [ 22.352630][ T182] ? printk_get_next_message+0x2fe/0x7d0 [ 22.352634][ T182] ? rcu_read_lock_any_held+0x3c/0x90 [ 22.352638][ T182] ? validate_chain+0x38b/0xc20 [ 22.352643][ T182] hvc_console_print+0x292/0x780 [ 22.352647][ T182] ? __lock_acquire+0x518/0xc20 [ 22.352649][ T182] ? __lock_acquire+0x518/0xc20 [ 22.352654][ T182] ? hvc_write+0x3a0/0x3a0 [ 22.352659][ T182] ? rcu_is_watching+0x16/0xd0 [ 22.352661][ T182] ? lock_acquire+0x13c/0x160 [ 22.352666][ T182] console_emit_next_record+0x252/0x4f0 [ 22.352671][ T182] ? devkmsg_read+0x4e0/0x4e0 [ 22.352676][ T182] ? rcu_is_watching+0x16/0xd0 [ 22.352679][ T182] ? lock_acquire+0x13c/0x160 [ 22.352683][ T182] console_flush_one_record+0x46f/0x710 [ 22.352689][ T182] ? console_emit_next_record+0x4f0/0x4f0 [ 22.352691][ T182] ? __lock_acquire+0x518/0xc20 [ 22.352697][ T182] console_unlock+0xee/0x1f0 [ 22.352701][ T182] ? console_flush_one_record+0x710/0x710 [ 22.352703][ T182] ? rcu_is_watching+0x16/0xd0 [ 22.352705][ T182] ? lock_acquire+0x60/0x160 [ 22.352710][ T182] ? __down_trylock_console_sem+0x5e/0xa0 [ 22.352712][ T182] ? vprintk_emit+0x320/0x3e0 [ 22.352715][ T182] vprintk_emit+0x37c/0x3e0 [ 22.352719][ T182] ? wake_up_klogd_work_func+0x90/0x90 [ 22.352723][ T182] ? __lock_acquire+0x518/0xc20 [ 22.352727][ T182] _printk+0xc7/0x100 [ 22.352731][ T182] ? snapshot_read.cold+0x21/0x21 [ 22.352735][ T182] ? do_raw_spin_lock+0x131/0x280 [ 22.352738][ T182] ? __rwlock_init+0x150/0x150 [ 22.352743][ T182] ? do_raw_spin_lock+0x131/0x280 [ 22.352747][ T182] do_exit.cold+0x82/0x9c [ 22.352751][ T182] ? exit_notify+0x890/0x890 [ 22.352753][ T182] ? __lock_release.isra.0+0x69/0x1a0 [ 22.352756][ T182] ? rcu_is_watching+0x16/0xd0 [ 22.352760][ T182] do_group_exit+0xb8/0x370 [ 22.352764][ T182] __x64_sys_exit_group+0x3c/0x50 [ 22.352766][ T182] x64_sys_call+0x1567/0x1570 [ 22.352769][ T182] do_syscall_64+0xff/0x530 [ 22.352773][ T182] ? exc_page_fault+0xee/0x100 [ 22.352776][ T182] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 22.352779][ T182] RIP: 0033:0x7f502325b1b8 [ 22.352782][ T182] Code: Unable to access opcode bytes at 0x7f502325b18e. [ 22.352783][ T182] RSP: 002b:00007ffeb665b248 EFLAGS: 00000256 ORIG_RAX: 00000000000000e7 [ 22.352785][ T182] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f502325b1b8 [ 22.352787][ T182] RDX: 0000000000000000 RSI: fffffffffffffe90 RDI: 0000000000000000 [ 22.352788][ T182] RBP: 00007ffeb665b3d0 R08: 00005578b4657918 R09: 0000000000000000 [ 22.352789][ T182] R10: 0000000000000000 R11: 0000000000000256 R12: 0000000000000000 [ 22.352790][ T182] R13: 00007f5022ab9050 R14: 00007f502378cd9e R15: 00005578b44dd310 [ 22.352799][ T182]