[ 18.922116][ T205] (udev-worker) (205) used greatest stack depth: 22696 bytes left [ 18.922135][ T205] BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:322 [ 18.922137][ T205] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 205, name: (udev-worker) [ 18.922139][ T205] preempt_count: 2, expected: 0 [ 18.922140][ T205] RCU nest depth: 0, expected: 0 [ 18.922141][ T205] locks held by (udev-worker)/205: 5, last CPU#3: [ 18.922142][ T205] #0: ffffffff942167b8 (low_water_lock){+.+.}-{3:3}, at: do_exit+0x887/0xdc0 [ 18.922154][ T205] #1: ffffffff9437ddc0 (console_lock){+.+.}-{0:0}, at: vprintk_emit+0x320/0x3e0 [ 18.922159][ T205] #2: ffffffff9437de38 (console_srcu){....}-{0:0}, at: console_flush_one_record+0x106/0x710 [ 18.922163][ T205] #3: ffffffff9429d760 (console_owner){....}-{0:0}, at: console_lock_spinning_enable+0x40/0x60 [ 18.922167][ T205] #4: ffffffff9429d660 (printk_legacy_map-wait-type-override){....}-{3:3}, at: console_emit_next_record+0x1df/0x4c0 [ 18.922171][ T205] irq event stamp: 901124 [ 18.922172][ T205] hardirqs last enabled at (901123): [] __down_trylock_console_sem+0x86/0xa0 [ 18.922174][ T205] hardirqs last disabled at (901124): [] console_emit_next_record+0x3d4/0x4c0 [ 18.922176][ T205] softirqs last enabled at (901054): [] netlink_release+0x17b/0xcf0 [ 18.922180][ T205] softirqs last disabled at (901052): [] netlink_release+0xd2/0xcf0 [ 18.922183][ T205] Preemption disabled at: [ 18.922184][ T205] [<0000000000000000>] 0x0 [ 18.922190][ T205] CPU: 3 UID: 0 PID: 205 Comm: (udev-worker) Tainted: G W 7.2.0-virtme #1 PREEMPT(full) [ 18.922193][ T205] Tainted: [W]=WARN [ 18.922194][ T205] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 18.922196][ T205] Call Trace: [ 18.922198][ T205] [ 18.922199][ T205] dump_stack_lvl+0x6f/0xa0 [ 18.922205][ T205] __might_resched.cold+0x1fe/0x2c1 [ 18.922212][ T205] ? perf_trace_sched_switch+0x7c0/0x7c0 [ 18.922216][ T205] ? __kmalloc_noprof+0xdb/0x760 [ 18.922220][ T205] __kmalloc_noprof+0x443/0x760 [ 18.922222][ T205] ? alloc_buf.isra.0+0x4b/0x260 [ 18.922229][ T205] ? do_raw_spin_unlock+0x59/0x250 [ 18.922231][ T205] alloc_buf.isra.0+0x4b/0x260 [ 18.922235][ T205] put_chars+0x1e1/0x2f0 [ 18.922237][ T205] ? __send_to_port+0x420/0x420 [ 18.922239][ T205] ? rcu_lockdep_current_cpu_online+0x3f/0x1b0 [ 18.922243][ T205] ? validate_chain+0x38b/0xc20 [ 18.922248][ T205] hvc_console_print+0x292/0x780 [ 18.922255][ T205] ? hvc_write+0x3a0/0x3a0 [ 18.922258][ T205] ? rcu_is_watching+0x16/0xd0 [ 18.922260][ T205] ? lock_acquire+0x13c/0x160 [ 18.922264][ T205] console_emit_next_record+0x22f/0x4c0 [ 18.922268][ T205] ? devkmsg_read+0x4b0/0x4b0 [ 18.922269][ T205] ? console_flush_one_record+0x106/0x710 [ 18.922273][ T205] ? rcu_is_watching+0x16/0xd0 [ 18.922274][ T205] ? lock_acquire+0x13c/0x160 [ 18.922278][ T205] console_flush_one_record+0x46f/0x710 [ 18.922282][ T205] ? console_emit_next_record+0x4c0/0x4c0 [ 18.922284][ T205] ? __lock_acquire+0x518/0xc20 [ 18.922289][ T205] console_unlock+0xee/0x1f0 [ 18.922292][ T205] ? console_flush_one_record+0x710/0x710 [ 18.922294][ T205] ? rcu_is_watching+0x16/0xd0 [ 18.922295][ T205] ? lock_acquire+0xe0/0x160 [ 18.922299][ T205] ? __down_trylock_console_sem+0x5e/0xa0 [ 18.922301][ T205] ? vprintk_emit+0x320/0x3e0 [ 18.922305][ T205] vprintk_emit+0x37c/0x3e0 [ 18.922309][ T205] ? wake_up_klogd_work_func+0x90/0x90 [ 18.922312][ T205] ? __lock_acquire+0x518/0xc20 [ 18.922315][ T205] _printk+0xc7/0x100 [ 18.922319][ T205] ? snapshot_read.cold+0x21/0x21 [ 18.922321][ T205] ? do_raw_spin_lock+0x131/0x280 [ 18.922324][ T205] ? __rwlock_init+0x150/0x150 [ 18.922328][ T205] ? do_raw_spin_lock+0x131/0x280 [ 18.922331][ T205] do_exit.cold+0x82/0x9c [ 18.922335][ T205] ? exit_notify+0x890/0x890 [ 18.922336][ T205] ? __lock_release.isra.0+0x69/0x1a0 [ 18.922339][ T205] ? rcu_is_watching+0x16/0xd0 [ 18.922342][ T205] do_group_exit+0xb8/0x370 [ 18.922345][ T205] __x64_sys_exit_group+0x3c/0x50 [ 18.922347][ T205] x64_sys_call+0x1567/0x1570 [ 18.922349][ T205] do_syscall_64+0xff/0x530 [ 18.922353][ T205] ? exc_page_fault+0xee/0x100 [ 18.922356][ T205] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 18.922358][ T205] RIP: 0033:0x7f60056d11b8 [ 18.922360][ T205] Code: Unable to access opcode bytes at 0x7f60056d118e. [ 18.922361][ T205] RSP: 002b:00007ffdfe737398 EFLAGS: 00000256 ORIG_RAX: 00000000000000e7 [ 18.922364][ T205] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f60056d11b8 [ 18.922365][ T205] RDX: 0000000000000000 RSI: fffffffffffffe90 RDI: 0000000000000000 [ 18.922366][ T205] RBP: 00007ffdfe737520 R08: 0000555f79c82518 R09: 0000000000000000 [ 18.922367][ T205] R10: 0000000000000000 R11: 0000000000000256 R12: 0000000000000000 [ 18.922367][ T205] R13: 00007f6004f2f050 R14: 00007f6005c02d9e R15: 0000555f79c77620 [ 18.922374][ T205]