[ 16.377051][ T179] (udev-worker) (179) used greatest stack depth: 22696 bytes left [ 16.377072][ T179] BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:322 [ 16.377074][ T179] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 179, name: (udev-worker) [ 16.377076][ T179] preempt_count: 2, expected: 0 [ 16.377077][ T179] RCU nest depth: 0, expected: 0 [ 16.377078][ T179] locks held by (udev-worker)/179: 5, last CPU#1: [ 16.377080][ T179] #0: ffffffff960027b8 (low_water_lock){+.+.}-{3:3}, at: do_exit+0x887/0xdc0 [ 16.377092][ T179] #1: ffffffff96199cc0 (console_lock){+.+.}-{0:0}, at: vprintk_emit+0x320/0x3e0 [ 16.377097][ T179] #2: ffffffff96199d38 (console_srcu){....}-{0:0}, at: console_flush_one_record+0x106/0x710 [ 16.377102][ T179] #3: ffffffff96089660 (console_owner){....}-{0:0}, at: console_lock_spinning_enable+0x40/0x60 [ 16.377105][ T179] #4: ffffffff96089560 (printk_legacy_map-wait-type-override){....}-{3:3}, at: console_emit_next_record+0x202/0x4f0 [ 16.377110][ T179] irq event stamp: 150032 [ 16.377110][ T179] hardirqs last enabled at (150031): [] __down_trylock_console_sem+0x86/0xa0 [ 16.377113][ T179] hardirqs last disabled at (150032): [] console_emit_next_record+0x3f8/0x4f0 [ 16.377116][ T179] softirqs last enabled at (149932): [] netlink_release+0x17b/0xcf0 [ 16.377120][ T179] softirqs last disabled at (149930): [] netlink_release+0xd2/0xcf0 [ 16.377123][ T179] Preemption disabled at: [ 16.377123][ T179] [<0000000000000000>] 0x0 [ 16.377130][ T179] CPU: 1 UID: 0 PID: 179 Comm: (udev-worker) Tainted: G W 7.2.0-virtme #1 PREEMPT(full) [ 16.377134][ T179] Tainted: [W]=WARN [ 16.377135][ T179] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 16.377136][ T179] Call Trace: [ 16.377138][ T179] [ 16.377140][ T179] dump_stack_lvl+0x6f/0xa0 [ 16.377146][ T179] __might_resched.cold+0x1fe/0x2c1 [ 16.377151][ T179] ? perf_trace_sched_switch+0x7c0/0x7c0 [ 16.377155][ T179] ? __kmalloc_noprof+0xdb/0x760 [ 16.377161][ T179] __kmalloc_noprof+0x443/0x760 [ 16.377163][ T179] ? alloc_buf.isra.0+0x4b/0x260 [ 16.377170][ T179] ? do_raw_spin_unlock+0x59/0x250 [ 16.377173][ T179] alloc_buf.isra.0+0x4b/0x260 [ 16.377176][ T179] put_chars+0x1e1/0x2f0 [ 16.377179][ T179] ? __send_to_port+0x420/0x420 [ 16.377181][ T179] ? printk_get_next_message+0x2fe/0x7d0 [ 16.377185][ T179] ? rcu_read_lock_any_held+0x3c/0x90 [ 16.377188][ T179] ? validate_chain+0x38b/0xc20 [ 16.377192][ T179] hvc_console_print+0x292/0x780 [ 16.377196][ T179] ? __lock_acquire+0x518/0xc20 [ 16.377198][ T179] ? __lock_acquire+0x518/0xc20 [ 16.377202][ T179] ? hvc_write+0x3a0/0x3a0 [ 16.377205][ T179] ? rcu_is_watching+0x16/0xd0 [ 16.377207][ T179] ? lock_acquire+0x13c/0x160 [ 16.377211][ T179] console_emit_next_record+0x252/0x4f0 [ 16.377215][ T179] ? devkmsg_read+0x4e0/0x4e0 [ 16.377220][ T179] ? rcu_is_watching+0x16/0xd0 [ 16.377222][ T179] ? lock_acquire+0x13c/0x160 [ 16.377226][ T179] console_flush_one_record+0x46f/0x710 [ 16.377230][ T179] ? console_emit_next_record+0x4f0/0x4f0 [ 16.377232][ T179] ? __lock_acquire+0x518/0xc20 [ 16.377237][ T179] console_unlock+0xee/0x1f0 [ 16.377240][ T179] ? console_flush_one_record+0x710/0x710 [ 16.377242][ T179] ? rcu_is_watching+0x16/0xd0 [ 16.377243][ T179] ? lock_acquire+0x60/0x160 [ 16.377247][ T179] ? __down_trylock_console_sem+0x5e/0xa0 [ 16.377249][ T179] ? vprintk_emit+0x320/0x3e0 [ 16.377252][ T179] vprintk_emit+0x37c/0x3e0 [ 16.377255][ T179] ? wake_up_klogd_work_func+0x90/0x90 [ 16.377258][ T179] ? __lock_acquire+0x518/0xc20 [ 16.377261][ T179] _printk+0xc7/0x100 [ 16.377265][ T179] ? snapshot_read.cold+0x21/0x21 [ 16.377268][ T179] ? do_raw_spin_lock+0x131/0x280 [ 16.377270][ T179] ? __rwlock_init+0x150/0x150 [ 16.377274][ T179] ? do_raw_spin_lock+0x131/0x280 [ 16.377277][ T179] do_exit.cold+0x82/0x9c [ 16.377281][ T179] ? exit_notify+0x890/0x890 [ 16.377282][ T179] ? __lock_release.isra.0+0x69/0x1a0 [ 16.377285][ T179] ? rcu_is_watching+0x16/0xd0 [ 16.377289][ T179] do_group_exit+0xb8/0x370 [ 16.377291][ T179] __x64_sys_exit_group+0x3c/0x50 [ 16.377293][ T179] x64_sys_call+0x1567/0x1570 [ 16.377296][ T179] do_syscall_64+0xff/0x530 [ 16.377299][ T179] ? exc_page_fault+0xee/0x100 [ 16.377302][ T179] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 16.377305][ T179] RIP: 0033:0x7f393222b1b8 [ 16.377307][ T179] Code: Unable to access opcode bytes at 0x7f393222b18e. [ 16.377308][ T179] RSP: 002b:00007ffd6943ddc8 EFLAGS: 00000256 ORIG_RAX: 00000000000000e7 [ 16.377310][ T179] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f393222b1b8 [ 16.377312][ T179] RDX: 0000000000000000 RSI: fffffffffffffe90 RDI: 0000000000000000 [ 16.377313][ T179] RBP: 00007ffd6943df50 R08: 000055c58555ef18 R09: 0000000000000000 [ 16.377313][ T179] R10: 0000000000000000 R11: 0000000000000256 R12: 0000000000000000 [ 16.377314][ T179] R13: 00007f3931a89050 R14: 00007f393275cd9e R15: 000055c5853d2900 [ 16.377321][ T179]