kernel msg: ebtables bug: please report to author: entries_size too small INFO: rcu_sched detected stalls on CPUs/tasks: (detected by 1, t=100002 jiffies, g=58389, c=58388, q=144) All QSes seen, last rcu_sched kthread activity 100002 (4295113430-4295013428), jiffies_till_next_fqs=3, root ->qsmask 0x0 syz-executor6 R running task 58640 16798 4557 0x00000008 Call Trace: sched_show_task+0x610/0x760 kernel/sched/core.c:5332 print_other_cpu_stall kernel/rcu/tree.c:1441 [inline] check_cpu_stall kernel/rcu/tree.c:1559 [inline] __rcu_pending kernel/rcu/tree.c:3244 [inline] rcu_pending kernel/rcu/tree.c:3291 [inline] rcu_check_callbacks+0x2632/0x29a0 kernel/rcu/tree.c:2646 update_process_times+0x132/0x1a0 kernel/time/timer.c:1636 tick_sched_handle kernel/time/tick-sched.c:164 [inline] tick_sched_timer+0x3bf/0x520 kernel/time/tick-sched.c:1274 __run_hrtimer kernel/time/hrtimer.c:1398 [inline] __hrtimer_run_queues+0xc74/0x1680 kernel/time/hrtimer.c:1460 hrtimer_interrupt+0x451/0x13c0 kernel/time/hrtimer.c:1518 local_apic_timer_interrupt+0x6b/0x250 arch/x86/kernel/apic/apic.c:1025 smp_apic_timer_interrupt+0x5a/0x90 arch/x86/kernel/apic/apic.c:1053 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:868 RIP: 0010:__read_once_size include/linux/compiler.h:197 [inline] RIP: 0010:__sanitizer_cov_trace_pc+0x32/0x50 kernel/kcov.c:106 Code: 25 80 fc 02 00 65 8b 14 25 94 fc 02 00 f7 c2 00 01 1f 00 75 2c 8b 91 c0 18 00 00 83 fa 02 75 21 48 8b 91 c8 18 00 00 48 8b 32 <48> 8d 7e 01 8b 89 c4 18 00 00 48 39 cf 73 08 48 89 44 f2 08 48 89 RSP: 0018:ffff8801050df2d8 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13 RAX: ffffffff815565a5 RBX: 0000000000000001 RCX: ffff8801a8151d80 RDX: ffffc90002da3000 RSI: 000000000003ffff RDI: ffffea00061e53a0 RBP: ffff8801050df3b8 R08: 0000000000000000 R09: 0000000000000002 R10: 0000000000000000 R11: ffffffff8117d090 R12: ffff8801050df338 R13: 0000000000000000 R14: 0000000000000000 R15: ffff8801a8152680 smp_call_function_many+0x672/0xe30 kernel/smp.c:434 smp_call_function kernel/smp.c:492 [inline] on_each_cpu+0xe3/0x190 kernel/smp.c:602 flush_tlb_kernel_range+0x15c/0x1f0 arch/x86/mm/tlb.c:683 __purge_vmap_area_lazy+0x1f7/0x3b0 mm/vmalloc.c:677 vm_unmap_aliases+0x627/0x6c0 mm/vmalloc.c:1109 change_page_attr_set_clr+0x647/0x2020 arch/x86/mm/pageattr.c:1473 change_page_attr_clear arch/x86/mm/pageattr.c:1533 [inline] set_memory_ro+0xe1/0x130 arch/x86/mm/pageattr.c:1762 bpf_jit_binary_lock_ro include/linux/filter.h:690 [inline] bpf_int_jit_compile+0x818f/0x86a0 arch/x86/net/bpf_jit_comp.c:1168 bpf_prog_select_runtime+0x97f/0xa20 kernel/bpf/core.c:1498 bpf_prog_load kernel/bpf/syscall.c:1356 [inline] __do_sys_bpf+0xccf6/0xeae0 kernel/bpf/syscall.c:2305 __se_sys_bpf kernel/bpf/syscall.c:2267 [inline] __x64_sys_bpf+0xda/0x110 kernel/bpf/syscall.c:2267 do_syscall_64+0x15b/0x230 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x63/0xe7 RIP: 0033:0x455ab9 Code: 1d ba fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 eb b9 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f15186d5c68 EFLAGS: 00000246 ORIG_RAX: 0000000000000141 RAX: ffffffffffffffda RBX: 00007f15186d66d4 RCX: 0000000000455ab9 RDX: 0000000000000018 RSI: 0000000020b7a000 RDI: 0000000000000005 RBP: 000000000072bea0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff R13: 00000000004bb7f3 R14: 00000000004c8c08 R15: 0000000000000000 rcu_sched kthread starved for 100002 jiffies! g58389 c58388 f0x2 RCU_GP_WAIT_FQS(3) ->state=0x0 ->cpu=0 RCU grace-period kthread stack dump: rcu_sched R running task 61768 10 2 0x80000000 Call Trace: context_switch kernel/sched/core.c:2857 [inline] __schedule+0x652/0x780 kernel/sched/core.c:3507 schedule+0x1cc/0x300 kernel/sched/core.c:3551 schedule_timeout+0x416/0x5b0 kernel/time/timer.c:1801 rcu_gp_kthread+0x1ed1/0x3a40 kernel/rcu/tree.c:2179 kthread+0x473/0x4b0 kernel/kthread.c:247 ret_from_fork+0x35/0x40 arch/x86/entry/entry_64.S:415