[ 23.421369][ T199] (udev-worker) (199) used greatest stack depth: 22760 bytes left [ 23.421388][ T199] BUG: sleeping function called from invalid context at ./include/linux/sched/mm.h:322 [ 23.421390][ T199] in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 199, name: (udev-worker) [ 23.421392][ T199] preempt_count: 2, expected: 0 [ 23.421393][ T199] RCU nest depth: 0, expected: 0 [ 23.421394][ T199] locks held by (udev-worker)/199: 5, last CPU#3: [ 23.421396][ T199] #0: ffffffffbce027b8 (low_water_lock){+.+.}-{3:3}, at: do_exit+0x887/0xdc0 [ 23.421408][ T199] #1: ffffffffbcf69cc0 (console_lock){+.+.}-{0:0}, at: vprintk_emit+0x320/0x3e0 [ 23.421413][ T199] #2: ffffffffbcf69d38 (console_srcu){....}-{0:0}, at: console_flush_one_record+0x106/0x710 [ 23.421416][ T199] #3: ffffffffbce89660 (console_owner){....}-{0:0}, at: console_lock_spinning_enable+0x40/0x60 [ 23.421420][ T199] #4: ffffffffbce89560 (printk_legacy_map-wait-type-override){....}-{3:3}, at: console_emit_next_record+0x1df/0x4c0 [ 23.421423][ T199] irq event stamp: 1822358 [ 23.421424][ T199] hardirqs last enabled at (1822357): [] __down_trylock_console_sem+0x86/0xa0 [ 23.421427][ T199] hardirqs last disabled at (1822358): [] console_emit_next_record+0x3d4/0x4c0 [ 23.421429][ T199] softirqs last enabled at (1822294): [] netlink_release+0x17b/0xcf0 [ 23.421433][ T199] softirqs last disabled at (1822292): [] netlink_release+0xd2/0xcf0 [ 23.421436][ T199] Preemption disabled at: [ 23.421437][ T199] [<0000000000000000>] 0x0 [ 23.421443][ T199] CPU: 3 UID: 0 PID: 199 Comm: (udev-worker) Tainted: G W 7.2.0-virtme #1 PREEMPT(full) [ 23.421447][ T199] Tainted: [W]=WARN [ 23.421448][ T199] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 23.421450][ T199] Call Trace: [ 23.421451][ T199] [ 23.421455][ T199] dump_stack_lvl+0x6f/0xa0 [ 23.421460][ T199] __might_resched.cold+0x1fe/0x2c1 [ 23.421465][ T199] ? perf_trace_sched_switch+0x7c0/0x7c0 [ 23.421468][ T199] ? __kmalloc_noprof+0xdb/0x760 [ 23.421473][ T199] __kmalloc_noprof+0x443/0x760 [ 23.421476][ T199] ? alloc_buf.isra.0+0x4b/0x260 [ 23.421481][ T199] ? do_raw_spin_unlock+0x59/0x250 [ 23.421484][ T199] alloc_buf.isra.0+0x4b/0x260 [ 23.421488][ T199] put_chars+0x1e1/0x2f0 [ 23.421491][ T199] ? __send_to_port+0x420/0x420 [ 23.421493][ T199] ? rcu_lockdep_current_cpu_online+0x3f/0x1b0 [ 23.421497][ T199] ? validate_chain+0x38b/0xc20 [ 23.421502][ T199] hvc_console_print+0x292/0x780 [ 23.421509][ T199] ? hvc_write+0x3a0/0x3a0 [ 23.421511][ T199] ? rcu_is_watching+0x16/0xd0 [ 23.421514][ T199] ? lock_acquire+0x13c/0x160 [ 23.421518][ T199] console_emit_next_record+0x22f/0x4c0 [ 23.421521][ T199] ? devkmsg_read+0x4b0/0x4b0 [ 23.421522][ T199] ? console_flush_one_record+0x106/0x710 [ 23.421525][ T199] ? rcu_is_watching+0x16/0xd0 [ 23.421527][ T199] ? lock_acquire+0x13c/0x160 [ 23.421531][ T199] console_flush_one_record+0x46f/0x710 [ 23.421534][ T199] ? console_emit_next_record+0x4c0/0x4c0 [ 23.421535][ T199] ? __lock_acquire+0x518/0xc20 [ 23.421541][ T199] console_unlock+0xee/0x1f0 [ 23.421543][ T199] ? console_flush_one_record+0x710/0x710 [ 23.421544][ T199] ? rcu_is_watching+0x16/0xd0 [ 23.421546][ T199] ? lock_acquire+0x60/0x160 [ 23.421550][ T199] ? __down_trylock_console_sem+0x5e/0xa0 [ 23.421552][ T199] ? vprintk_emit+0x320/0x3e0 [ 23.421554][ T199] vprintk_emit+0x37c/0x3e0 [ 23.421558][ T199] ? wake_up_klogd_work_func+0x90/0x90 [ 23.421561][ T199] ? __lock_acquire+0x518/0xc20 [ 23.421565][ T199] _printk+0xc7/0x100 [ 23.421568][ T199] ? snapshot_read.cold+0x21/0x21 [ 23.421571][ T199] ? do_raw_spin_lock+0x131/0x280 [ 23.421574][ T199] ? __rwlock_init+0x150/0x150 [ 23.421578][ T199] ? do_raw_spin_lock+0x131/0x280 [ 23.421581][ T199] do_exit.cold+0x82/0x9c [ 23.421584][ T199] ? exit_notify+0x890/0x890 [ 23.421586][ T199] ? __lock_release.isra.0+0x69/0x1a0 [ 23.421588][ T199] ? rcu_is_watching+0x16/0xd0 [ 23.421592][ T199] do_group_exit+0xb8/0x370 [ 23.421595][ T199] __x64_sys_exit_group+0x3c/0x50 [ 23.421597][ T199] x64_sys_call+0x1567/0x1570 [ 23.421600][ T199] do_syscall_64+0xff/0x530 [ 23.421604][ T199] ? exc_page_fault+0xee/0x100 [ 23.421607][ T199] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 23.421609][ T199] RIP: 0033:0x7fb7e5a771b8 [ 23.421612][ T199] Code: Unable to access opcode bytes at 0x7fb7e5a7718e. [ 23.421613][ T199] RSP: 002b:00007fff9f569ac8 EFLAGS: 00000256 ORIG_RAX: 00000000000000e7 [ 23.421615][ T199] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fb7e5a771b8 [ 23.421616][ T199] RDX: 0000000000000000 RSI: fffffffffffffe90 RDI: 0000000000000000 [ 23.421617][ T199] RBP: 00007fff9f569c50 R08: 0000561e5d8331a8 R09: 0000000000000000 [ 23.421618][ T199] R10: 0000000000000000 R11: 0000000000000256 R12: 0000000000000000 [ 23.421619][ T199] R13: 00007fb7e52d5050 R14: 00007fb7e5fb0e70 R15: 0000561e5d6a34e0 [ 23.421631][ T199]