bond0: Enslaving veth95 as an active interface with an up link INFO: rcu_preempt detected stalls on CPUs/tasks: (detected by 0, t=10502 jiffies, g=8857, c=8856, q=120) All QSes seen, last rcu_preempt kthread activity 10503 (4294988888-4294978385), jiffies_till_next_fqs=1, root ->qsmask 0x0 syz-executor.1 R running task 29280 17735 7620 0x00000008 Call Trace: sched_show_task kernel/sched/core.c:5168 [inline] sched_show_task.cold+0x2e3/0x347 kernel/sched/core.c:5143 print_other_cpu_stall kernel/rcu/tree.c:1501 [inline] check_cpu_stall kernel/rcu/tree.c:1616 [inline] __rcu_pending kernel/rcu/tree.c:3390 [inline] rcu_pending kernel/rcu/tree.c:3452 [inline] rcu_check_callbacks.cold+0xd3f/0xdaa kernel/rcu/tree.c:2792 update_process_times+0x29/0x60 kernel/time/timer.c:1590 tick_sched_handle+0x7d/0x150 kernel/time/tick-sched.c:165 tick_sched_timer+0x3e/0x120 kernel/time/tick-sched.c:1223 __run_hrtimer kernel/time/hrtimer.c:1223 [inline] __hrtimer_run_queues+0x25c/0xbb0 kernel/time/hrtimer.c:1287 hrtimer_interrupt+0x1e6/0x5e0 kernel/time/hrtimer.c:1321 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1075 [inline] smp_apic_timer_interrupt+0x117/0x5e0 arch/x86/kernel/apic/apic.c:1100 apic_timer_interrupt+0x8f/0xa0 arch/x86/entry/entry_64.S:792 RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:779 [inline] RIP: 0010:kmem_cache_free+0xa9/0x2b0 mm/slab.c:3759 RSP: 0018:ffff8880aea07ca8 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff10 RAX: 0000000000000007 RBX: ffff88808d394840 RCX: 1ffff1100a96eda6 RDX: 0000000000000000 RSI: ffff888054b76d10 RDI: 0000000000000286 RBP: ffff88821ac183c0 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000286 R13: ffffffff84f8f52e R14: dffffc0000000000 R15: ffff88808d394840 kfree_skbmem+0x7e/0x100 net/core/skbuff.c:607 sk_wmem_free_skb include/net/sock.h:1421 [inline] tcp_write_queue_purge include/net/tcp.h:1631 [inline] tcp_write_err+0x29f/0x640 net/ipv4/tcp_timer.c:39 tcp_probe_timer net/ipv4/tcp_timer.c:362 [inline] tcp_write_timer_handler+0x36a/0x7b0 net/ipv4/tcp_timer.c:587 tcp_write_timer+0xc7/0x160 net/ipv4/tcp_timer.c:601 call_timer_fn+0x14a/0x650 kernel/time/timer.c:1279 expire_timers kernel/time/timer.c:1318 [inline] __run_timers kernel/time/timer.c:1636 [inline] __run_timers kernel/time/timer.c:1604 [inline] run_timer_softirq+0x52a/0x1390 kernel/time/timer.c:1649 __do_softirq+0x254/0x9bf kernel/softirq.c:288 invoke_softirq kernel/softirq.c:368 [inline] irq_exit+0x15b/0x1a0 kernel/softirq.c:409 exiting_irq arch/x86/include/asm/apic.h:648 [inline] smp_apic_timer_interrupt+0x141/0x5e0 arch/x86/kernel/apic/apic.c:1102 apic_timer_interrupt+0x8f/0xa0 arch/x86/entry/entry_64.S:792 RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:779 [inline] RIP: 0010:lock_release+0x41e/0x7f0 kernel/locking/lockdep.c:4016 RSP: 0018:ffff888033187680 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff10 RAX: 1ffffffff0fa2ce1 RBX: 1ffff11006630ed4 RCX: 1ffff1100a96ed96 RDX: dffffc0000000000 RSI: 0000000000000002 RDI: 0000000000000286 RBP: ffff888054b76440 R08: 0000000000000001 R09: 0000000000000001 R10: ffff888054b76ce8 R11: ffff888054b76440 R12: ffffffff8163234c R13: 0000000000000003 R14: ffff888054b76440 R15: 0000000000000002 rcu_lock_release include/linux/rcupdate.h:247 [inline] rcu_read_unlock include/linux/rcupdate.h:685 [inline] is_bpf_text_address+0xa3/0x120 kernel/bpf/core.c:458 kernel_text_address+0x6e/0xe0 kernel/extable.c:150 __kernel_text_address+0x9/0x30 kernel/extable.c:105 unwind_get_return_address arch/x86/kernel/unwind_orc.c:255 [inline] unwind_get_return_address+0x5a/0xa0 arch/x86/kernel/unwind_orc.c:250 __save_stack_trace+0x7b/0xd0 arch/x86/kernel/stacktrace.c:45 save_stack+0x32/0xa0 mm/kasan/kasan.c:447 set_track mm/kasan/kasan.c:459 [inline] kasan_kmalloc mm/kasan/kasan.c:551 [inline] kasan_kmalloc+0xbf/0xe0 mm/kasan/kasan.c:529 slab_post_alloc_hook mm/slab.h:442 [inline] slab_alloc mm/slab.c:3390 [inline] kmem_cache_alloc+0x114/0x770 mm/slab.c:3550 kmem_cache_zalloc include/linux/slab.h:651 [inline] ebitmap_cpy+0xc7/0x260 security/selinux/ss/ebitmap.c:60 mls_context_cpy security/selinux/ss/context.h:51 [inline] mls_compute_sid+0x218/0xd40 security/selinux/ss/mls.c:556 security_compute_sid.part.0+0x991/0xfa0 security/selinux/ss/services.c:1725 security_compute_sid security/selinux/ss/services.c:1764 [inline] security_transition_sid+0xcb/0x120 security/selinux/ss/services.c:1764 socket_sockcreate_sid security/selinux/hooks.c:4356 [inline] socket_sockcreate_sid security/selinux/hooks.c:4348 [inline] selinux_socket_create+0x354/0x4a0 security/selinux/hooks.c:4389 security_socket_create+0x7e/0xc0 security/security.c:1346 __sock_create+0x61/0x620 net/socket.c:1230 sock_create net/socket.c:1315 [inline] SYSC_socket net/socket.c:1345 [inline] SyS_socket+0xd2/0x170 net/socket.c:1325 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x45c479 RSP: 002b:00007f1827c5fc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000029 RAX: ffffffffffffffda RBX: 00007f1827c606d4 RCX: 000000000045c479 RDX: 0000000000000088 RSI: 0000000000000002 RDI: 0000000000000002 RBP: 000000000076c100 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff R13: 0000000000000b7d R14: 00000000004cd711 R15: 000000000076c10c rcu_preempt kthread starved for 10558 jiffies! g8857 c8856 f0x2 RCU_GP_WAIT_FQS(3) ->state=0x0 ->cpu=0 rcu_preempt R running task 29920 8 2 0x80000000 Call Trace: schedule+0x8d/0x1b0 kernel/sched/core.c:3428 schedule_timeout+0x43c/0xe40 kernel/time/timer.c:1746 rcu_gp_kthread+0xb8e/0x1ce0 kernel/rcu/tree.c:2255 kthread+0x30d/0x420 kernel/kthread.c:232 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:404