[ 15.759042][ T200] (udev-worker) (200) used greatest stack depth: 22696 bytes left [ 15.759064][ T200] BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:322 [ 15.759066][ T200] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 200, name: (udev-worker) [ 15.759067][ T200] preempt_count: 2, expected: 0 [ 15.759068][ T200] RCU nest depth: 0, expected: 0 [ 15.759069][ T200] locks held by (udev-worker)/200: 5, last CPU#2: [ 15.759071][ T200] #0: ffffffffaec167b8 (low_water_lock){+.+.}-{3:3}, at: do_exit+0x887/0xdc0 [ 15.759084][ T200] #1: ffffffffaed7ddc0 (console_lock){+.+.}-{0:0}, at: vprintk_emit+0x320/0x3e0 [ 15.759088][ T200] #2: ffffffffaed7de38 (console_srcu){....}-{0:0}, at: console_flush_one_record+0x106/0x710 [ 15.759093][ T200] #3: ffffffffaec9d760 (console_owner){....}-{0:0}, at: console_lock_spinning_enable+0x40/0x60 [ 15.759097][ T200] #4: ffffffffaec9d660 (printk_legacy_map-wait-type-override){....}-{3:3}, at: console_emit_next_record+0x1df/0x4c0 [ 15.759101][ T200] irq event stamp: 71906 [ 15.759102][ T200] hardirqs last enabled at (71905): [] __down_trylock_console_sem+0x86/0xa0 [ 15.759105][ T200] hardirqs last disabled at (71906): [] console_emit_next_record+0x3d4/0x4c0 [ 15.759107][ T200] softirqs last enabled at (71836): [] netlink_release+0x17b/0xcf0 [ 15.759112][ T200] softirqs last disabled at (71834): [] netlink_release+0xd2/0xcf0 [ 15.759114][ T200] Preemption disabled at: [ 15.759115][ T200] [<0000000000000000>] 0x0 [ 15.759123][ T200] CPU: 2 UID: 0 PID: 200 Comm: (udev-worker) Tainted: G W 7.2.0-virtme #1 PREEMPT(full) [ 15.759126][ T200] Tainted: [W]=WARN [ 15.759127][ T200] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 15.759129][ T200] Call Trace: [ 15.759131][ T200] [ 15.759132][ T200] dump_stack_lvl+0x6f/0xa0 [ 15.759140][ T200] __might_resched.cold+0x1fe/0x2c1 [ 15.759146][ T200] ? perf_trace_sched_switch+0x7c0/0x7c0 [ 15.759150][ T200] ? __kmalloc_noprof+0xdb/0x760 [ 15.759154][ T200] __kmalloc_noprof+0x443/0x760 [ 15.759156][ T200] ? alloc_buf.isra.0+0x4b/0x260 [ 15.759163][ T200] ? do_raw_spin_unlock+0x59/0x250 [ 15.759166][ T200] alloc_buf.isra.0+0x4b/0x260 [ 15.759169][ T200] put_chars+0x1e1/0x2f0 [ 15.759172][ T200] ? __send_to_port+0x420/0x420 [ 15.759173][ T200] ? rcu_lockdep_current_cpu_online+0x3f/0x1b0 [ 15.759177][ T200] ? validate_chain+0x38b/0xc20 [ 15.759182][ T200] hvc_console_print+0x292/0x780 [ 15.759190][ T200] ? hvc_write+0x3a0/0x3a0 [ 15.759192][ T200] ? rcu_is_watching+0x16/0xd0 [ 15.759194][ T200] ? lock_acquire+0x13c/0x160 [ 15.759198][ T200] console_emit_next_record+0x22f/0x4c0 [ 15.759202][ T200] ? devkmsg_read+0x4b0/0x4b0 [ 15.759204][ T200] ? console_flush_one_record+0x106/0x710 [ 15.759207][ T200] ? rcu_is_watching+0x16/0xd0 [ 15.759209][ T200] ? lock_acquire+0x13c/0x160 [ 15.759213][ T200] console_flush_one_record+0x46f/0x710 [ 15.759217][ T200] ? console_emit_next_record+0x4c0/0x4c0 [ 15.759219][ T200] ? __lock_acquire+0x518/0xc20 [ 15.759224][ T200] console_unlock+0xee/0x1f0 [ 15.759227][ T200] ? console_flush_one_record+0x710/0x710 [ 15.759229][ T200] ? rcu_is_watching+0x16/0xd0 [ 15.759231][ T200] ? lock_acquire+0xe0/0x160 [ 15.759234][ T200] ? __down_trylock_console_sem+0x5e/0xa0 [ 15.759236][ T200] ? vprintk_emit+0x320/0x3e0 [ 15.759239][ T200] vprintk_emit+0x37c/0x3e0 [ 15.759242][ T200] ? wake_up_klogd_work_func+0x90/0x90 [ 15.759245][ T200] ? __lock_acquire+0x518/0xc20 [ 15.759249][ T200] _printk+0xc7/0x100 [ 15.759252][ T200] ? snapshot_read.cold+0x21/0x21 [ 15.759255][ T200] ? do_raw_spin_lock+0x131/0x280 [ 15.759257][ T200] ? __rwlock_init+0x150/0x150 [ 15.759261][ T200] ? do_raw_spin_lock+0x131/0x280 [ 15.759264][ T200] do_exit.cold+0x82/0x9c [ 15.759268][ T200] ? exit_notify+0x890/0x890 [ 15.759269][ T200] ? __lock_release.isra.0+0x69/0x1a0 [ 15.759272][ T200] ? rcu_is_watching+0x16/0xd0 [ 15.759275][ T200] do_group_exit+0xb8/0x370 [ 15.759278][ T200] __x64_sys_exit_group+0x3c/0x50 [ 15.759280][ T200] x64_sys_call+0x1567/0x1570 [ 15.759282][ T200] do_syscall_64+0xff/0x530 [ 15.759286][ T200] ? exc_page_fault+0xee/0x100 [ 15.759289][ T200] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 15.759291][ T200] RIP: 0033:0x7f1c0ce211b8 [ 15.759294][ T200] Code: Unable to access opcode bytes at 0x7f1c0ce2118e. [ 15.759295][ T200] RSP: 002b:00007ffc7b5a3d38 EFLAGS: 00000256 ORIG_RAX: 00000000000000e7 [ 15.759297][ T200] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f1c0ce211b8 [ 15.759299][ T200] RDX: 0000000000000000 RSI: fffffffffffffe90 RDI: 0000000000000000 [ 15.759300][ T200] RBP: 00007ffc7b5a3ec0 R08: 0000555b1dce5828 R09: 0000000000000000 [ 15.759301][ T200] R10: 0000000000000000 R11: 0000000000000256 R12: 0000000000000000 [ 15.759301][ T200] R13: 00007f1c0c67f050 R14: 00007f1c0d352d9e R15: 0000555b1dcef1f0 [ 15.759308][ T200]