[ 14.559470][ T201] (udev-worker) (201) used greatest stack depth: 22696 bytes left [ 14.559490][ T201] BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:322 [ 14.559493][ T201] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 201, name: (udev-worker) [ 14.559494][ T201] preempt_count: 2, expected: 0 [ 14.559495][ T201] RCU nest depth: 0, expected: 0 [ 14.559496][ T201] locks held by (udev-worker)/201: 5, last CPU#3: [ 14.559498][ T201] #0: ffffffffb1e167b8 (low_water_lock){+.+.}-{3:3}, at: do_exit+0x887/0xdc0 [ 14.559510][ T201] #1: ffffffffb1f7ddc0 (console_lock){+.+.}-{0:0}, at: vprintk_emit+0x320/0x3e0 [ 14.559515][ T201] #2: ffffffffb1f7de38 (console_srcu){....}-{0:0}, at: console_flush_one_record+0x106/0x710 [ 14.559520][ T201] #3: ffffffffb1e9d760 (console_owner){....}-{0:0}, at: console_lock_spinning_enable+0x40/0x60 [ 14.559524][ T201] #4: ffffffffb1e9d660 (printk_legacy_map-wait-type-override){....}-{3:3}, at: console_emit_next_record+0x1df/0x4c0 [ 14.559528][ T201] irq event stamp: 60320 [ 14.559529][ T201] hardirqs last enabled at (60319): [] __down_trylock_console_sem+0x86/0xa0 [ 14.559532][ T201] hardirqs last disabled at (60320): [] console_emit_next_record+0x3d4/0x4c0 [ 14.559534][ T201] softirqs last enabled at (60250): [] netlink_release+0x17b/0xcf0 [ 14.559539][ T201] softirqs last disabled at (60248): [] netlink_release+0xd2/0xcf0 [ 14.559541][ T201] Preemption disabled at: [ 14.559542][ T201] [<0000000000000000>] 0x0 [ 14.559549][ T201] CPU: 3 UID: 0 PID: 201 Comm: (udev-worker) Tainted: G W 7.2.0-virtme #1 PREEMPT(full) [ 14.559553][ T201] Tainted: [W]=WARN [ 14.559557][ T201] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 14.559558][ T201] Call Trace: [ 14.559560][ T201] [ 14.559562][ T201] dump_stack_lvl+0x6f/0xa0 [ 14.559568][ T201] __might_resched.cold+0x1fe/0x2c1 [ 14.559573][ T201] ? perf_trace_sched_switch+0x7c0/0x7c0 [ 14.559577][ T201] ? __kmalloc_noprof+0xdb/0x760 [ 14.559581][ T201] __kmalloc_noprof+0x443/0x760 [ 14.559583][ T201] ? alloc_buf.isra.0+0x4b/0x260 [ 14.559590][ T201] ? do_raw_spin_unlock+0x59/0x250 [ 14.559592][ T201] alloc_buf.isra.0+0x4b/0x260 [ 14.559596][ T201] put_chars+0x1e1/0x2f0 [ 14.559599][ T201] ? __send_to_port+0x420/0x420 [ 14.559600][ T201] ? rcu_lockdep_current_cpu_online+0x3f/0x1b0 [ 14.559603][ T201] ? validate_chain+0x38b/0xc20 [ 14.559609][ T201] hvc_console_print+0x292/0x780 [ 14.559617][ T201] ? hvc_write+0x3a0/0x3a0 [ 14.559624][ T201] ? rcu_is_watching+0x16/0xd0 [ 14.559626][ T201] ? lock_acquire+0x13c/0x160 [ 14.559630][ T201] console_emit_next_record+0x22f/0x4c0 [ 14.559634][ T201] ? devkmsg_read+0x4b0/0x4b0 [ 14.559636][ T201] ? console_flush_one_record+0x106/0x710 [ 14.559640][ T201] ? rcu_is_watching+0x16/0xd0 [ 14.559641][ T201] ? lock_acquire+0x13c/0x160 [ 14.559645][ T201] console_flush_one_record+0x46f/0x710 [ 14.559650][ T201] ? console_emit_next_record+0x4c0/0x4c0 [ 14.559652][ T201] ? __lock_acquire+0x518/0xc20 [ 14.559657][ T201] console_unlock+0xee/0x1f0 [ 14.559660][ T201] ? console_flush_one_record+0x710/0x710 [ 14.559662][ T201] ? rcu_is_watching+0x16/0xd0 [ 14.559664][ T201] ? lock_acquire+0xe0/0x160 [ 14.559667][ T201] ? __down_trylock_console_sem+0x5e/0xa0 [ 14.559669][ T201] ? vprintk_emit+0x320/0x3e0 [ 14.559672][ T201] vprintk_emit+0x37c/0x3e0 [ 14.559675][ T201] ? wake_up_klogd_work_func+0x90/0x90 [ 14.559678][ T201] ? __lock_acquire+0x518/0xc20 [ 14.559682][ T201] _printk+0xc7/0x100 [ 14.559686][ T201] ? snapshot_read.cold+0x21/0x21 [ 14.559689][ T201] ? do_raw_spin_lock+0x131/0x280 [ 14.559691][ T201] ? __rwlock_init+0x150/0x150 [ 14.559695][ T201] ? do_raw_spin_lock+0x131/0x280 [ 14.559698][ T201] do_exit.cold+0x82/0x9c [ 14.559702][ T201] ? exit_notify+0x890/0x890 [ 14.559703][ T201] ? __lock_release.isra.0+0x69/0x1a0 [ 14.559706][ T201] ? rcu_is_watching+0x16/0xd0 [ 14.559709][ T201] do_group_exit+0xb8/0x370 [ 14.559712][ T201] __x64_sys_exit_group+0x3c/0x50 [ 14.559714][ T201] x64_sys_call+0x1567/0x1570 [ 14.559717][ T201] do_syscall_64+0xff/0x530 [ 14.559720][ T201] ? exc_page_fault+0xee/0x100 [ 14.559723][ T201] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 14.559726][ T201] RIP: 0033:0x7f20a535c1b8 [ 14.559728][ T201] Code: Unable to access opcode bytes at 0x7f20a535c18e. [ 14.559729][ T201] RSP: 002b:00007ffd89d51f58 EFLAGS: 00000256 ORIG_RAX: 00000000000000e7 [ 14.559731][ T201] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f20a535c1b8 [ 14.559733][ T201] RDX: 0000000000000000 RSI: fffffffffffffe90 RDI: 0000000000000000 [ 14.559734][ T201] RBP: 00007ffd89d520e0 R08: 000055e65114ee18 R09: 0000000000000000 [ 14.559735][ T201] R10: 0000000000000000 R11: 0000000000000256 R12: 0000000000000000 [ 14.559735][ T201] R13: 00007f20a4bba050 R14: 00007f20a588dd9e R15: 000055e650fd4f00 [ 14.559742][ T201]