[ 15.750017][ T185] (udev-worker) (185) used greatest stack depth: 22696 bytes left [ 15.750037][ T185] BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:322 [ 15.750039][ T185] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 185, name: (udev-worker) [ 15.750041][ T185] preempt_count: 2, expected: 0 [ 15.750042][ T185] RCU nest depth: 0, expected: 0 [ 15.750043][ T185] locks held by (udev-worker)/185: 5, last CPU#0: [ 15.750045][ T185] #0: ffffffff85c027b8 (low_water_lock){+.+.}-{3:3}, at: do_exit+0x887/0xdc0 [ 15.750057][ T185] #1: ffffffff85d99cc0 (console_lock){+.+.}-{0:0}, at: vprintk_emit+0x320/0x3e0 [ 15.750063][ T185] #2: ffffffff85d99d38 (console_srcu){....}-{0:0}, at: console_flush_one_record+0x106/0x710 [ 15.750067][ T185] #3: ffffffff85c89660 (console_owner){....}-{0:0}, at: console_lock_spinning_enable+0x40/0x60 [ 15.750071][ T185] #4: ffffffff85c89560 (printk_legacy_map-wait-type-override){....}-{3:3}, at: console_emit_next_record+0x202/0x4f0 [ 15.750075][ T185] irq event stamp: 86934 [ 15.750076][ T185] hardirqs last enabled at (86933): [] __down_trylock_console_sem+0x86/0xa0 [ 15.750080][ T185] hardirqs last disabled at (86934): [] console_emit_next_record+0x3f8/0x4f0 [ 15.750082][ T185] softirqs last enabled at (86870): [] netlink_release+0x17b/0xcf0 [ 15.750086][ T185] softirqs last disabled at (86868): [] netlink_release+0xd2/0xcf0 [ 15.750089][ T185] Preemption disabled at: [ 15.750090][ T185] [<0000000000000000>] 0x0 [ 15.750096][ T185] CPU: 0 UID: 0 PID: 185 Comm: (udev-worker) Tainted: G W 7.2.0-virtme #1 PREEMPT(full) [ 15.750100][ T185] Tainted: [W]=WARN [ 15.750100][ T185] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 15.750102][ T185] Call Trace: [ 15.750104][ T185] [ 15.750105][ T185] dump_stack_lvl+0x6f/0xa0 [ 15.750112][ T185] __might_resched.cold+0x1fe/0x2c1 [ 15.750117][ T185] ? perf_trace_sched_switch+0x7c0/0x7c0 [ 15.750121][ T185] ? __kmalloc_noprof+0xdb/0x760 [ 15.750127][ T185] __kmalloc_noprof+0x443/0x760 [ 15.750130][ T185] ? alloc_buf.isra.0+0x4b/0x260 [ 15.750136][ T185] ? do_raw_spin_unlock+0x59/0x250 [ 15.750139][ T185] alloc_buf.isra.0+0x4b/0x260 [ 15.750143][ T185] put_chars+0x1e1/0x2f0 [ 15.750146][ T185] ? __send_to_port+0x420/0x420 [ 15.750148][ T185] ? printk_get_next_message+0x2fe/0x7d0 [ 15.750152][ T185] ? rcu_read_lock_any_held+0x3c/0x90 [ 15.750155][ T185] ? validate_chain+0x38b/0xc20 [ 15.750160][ T185] hvc_console_print+0x292/0x780 [ 15.750163][ T185] ? __lock_acquire+0x518/0xc20 [ 15.750165][ T185] ? __lock_acquire+0x518/0xc20 [ 15.750170][ T185] ? hvc_write+0x3a0/0x3a0 [ 15.750174][ T185] ? rcu_is_watching+0x16/0xd0 [ 15.750176][ T185] ? lock_acquire+0x13c/0x160 [ 15.750180][ T185] console_emit_next_record+0x252/0x4f0 [ 15.750184][ T185] ? devkmsg_read+0x4e0/0x4e0 [ 15.750189][ T185] ? rcu_is_watching+0x16/0xd0 [ 15.750191][ T185] ? lock_acquire+0x13c/0x160 [ 15.750195][ T185] console_flush_one_record+0x46f/0x710 [ 15.750200][ T185] ? console_emit_next_record+0x4f0/0x4f0 [ 15.750202][ T185] ? __lock_acquire+0x518/0xc20 [ 15.750208][ T185] console_unlock+0xee/0x1f0 [ 15.750211][ T185] ? console_flush_one_record+0x710/0x710 [ 15.750213][ T185] ? rcu_is_watching+0x16/0xd0 [ 15.750215][ T185] ? lock_acquire+0x60/0x160 [ 15.750219][ T185] ? __down_trylock_console_sem+0x5e/0xa0 [ 15.750221][ T185] ? vprintk_emit+0x320/0x3e0 [ 15.750224][ T185] vprintk_emit+0x37c/0x3e0 [ 15.750227][ T185] ? wake_up_klogd_work_func+0x90/0x90 [ 15.750230][ T185] ? __lock_acquire+0x518/0xc20 [ 15.750234][ T185] _printk+0xc7/0x100 [ 15.750238][ T185] ? snapshot_read.cold+0x21/0x21 [ 15.750241][ T185] ? do_raw_spin_lock+0x131/0x280 [ 15.750244][ T185] ? __rwlock_init+0x150/0x150 [ 15.750248][ T185] ? do_raw_spin_lock+0x131/0x280 [ 15.750251][ T185] do_exit.cold+0x82/0x9c [ 15.750255][ T185] ? exit_notify+0x890/0x890 [ 15.750257][ T185] ? __lock_release.isra.0+0x69/0x1a0 [ 15.750259][ T185] ? rcu_is_watching+0x16/0xd0 [ 15.750263][ T185] do_group_exit+0xb8/0x370 [ 15.750266][ T185] __x64_sys_exit_group+0x3c/0x50 [ 15.750268][ T185] x64_sys_call+0x1567/0x1570 [ 15.750271][ T185] do_syscall_64+0xff/0x530 [ 15.750274][ T185] ? exc_page_fault+0xee/0x100 [ 15.750277][ T185] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 15.750280][ T185] RIP: 0033:0x7f719dda11b8 [ 15.750282][ T185] Code: Unable to access opcode bytes at 0x7f719dda118e. [ 15.750284][ T185] RSP: 002b:00007ffdefd1e0e8 EFLAGS: 00000256 ORIG_RAX: 00000000000000e7 [ 15.750286][ T185] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f719dda11b8 [ 15.750287][ T185] RDX: 0000000000000000 RSI: fffffffffffffe90 RDI: 0000000000000000 [ 15.750288][ T185] RBP: 00007ffdefd1e270 R08: 0000558c13d29858 R09: 0000000000000000 [ 15.750289][ T185] R10: 0000000000000000 R11: 0000000000000256 R12: 0000000000000000 [ 15.750290][ T185] R13: 00007f719d5ff050 R14: 00007f719e2d2d9e R15: 0000558c13bad6d0 [ 15.750297][ T185]