INFO: rcu_sched detected stalls on CPUs/tasks: (detected by 1, t=100002 jiffies, g=24152, c=24151, q=63) All QSes seen, last rcu_sched kthread activity 100002 (4294998717-4294898715), jiffies_till_next_fqs=3, root ->qsmask 0x0 syz-executor6 R running task 58720 8269 4506 0x00000008 Call Trace: sched_show_task+0x600/0x730 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+0x2627/0x2990 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+0x3a6/0x500 kernel/time/tick-sched.c:1274 __run_hrtimer kernel/time/hrtimer.c:1398 [inline] __hrtimer_run_queues+0xbfc/0x15b0 kernel/time/hrtimer.c:1460 hrtimer_interrupt+0x458/0x13d0 kernel/time/hrtimer.c:1518 local_apic_timer_interrupt+0x6b/0x250 arch/x86/kernel/apic/apic.c:1028 smp_apic_timer_interrupt+0x5a/0x90 arch/x86/kernel/apic/apic.c:1056 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:868 RIP: 0010:__sanitizer_cov_trace_pc+0x4/0x50 kernel/kcov.c:97 Code: 00 48 8b 7d b8 e8 bc b1 56 00 48 83 c4 30 5b 41 5c 41 5d 41 5e 41 5f 5d c3 90 90 90 90 90 90 90 90 90 90 90 90 90 48 8b 04 24 <65> 48 8b 0c 25 80 fc 02 00 65 8b 14 25 94 fc 02 00 f7 c2 00 01 1f RSP: 0018:ffff8801b842f1b8 EFLAGS: 00000202 ORIG_RAX: ffffffffffffff13 RAX: ffffffff81535185 RBX: 0000000000000001 RCX: ffff8801ad6af238 RDX: ffff8801ad6af238 RSI: aaaaaaaaaaaab000 RDI: ffffea000a5191a0 RBP: ffff8801b842f290 R08: 0000000000000000 R09: 0000000000000002 R10: 0000000000000000 R11: ffffffff81174df0 R12: ffff8801b842f238 R13: 0000000000000000 R14: 0000000000000000 R15: ffff88012a0343f8 smp_call_function_many+0x658/0xdb0 kernel/smp.c:434 smp_call_function kernel/smp.c:492 [inline] on_each_cpu+0xd2/0x160 kernel/smp.c:602 flush_tlb_kernel_range+0x161/0x1e0 arch/x86/mm/tlb.c:683 __purge_vmap_area_lazy+0x1f7/0x3b0 mm/vmalloc.c:677 vm_unmap_aliases+0x635/0x6d0 mm/vmalloc.c:1109 change_page_attr_set_clr+0x587/0x1dd0 arch/x86/mm/pageattr.c:1473 change_page_attr_clear arch/x86/mm/pageattr.c:1533 [inline] set_memory_ro+0xcc/0x100 arch/x86/mm/pageattr.c:1762 bpf_jit_binary_lock_ro include/linux/filter.h:690 [inline] bpf_int_jit_compile+0x80b3/0x8590 arch/x86/net/bpf_jit_comp.c:1168 bpf_prog_select_runtime+0x953/0x9f0 kernel/bpf/core.c:1498 bpf_migrate_filter net/core/filter.c:1273 [inline] bpf_prepare_filter+0x1940/0x1d80 net/core/filter.c:1321 bpf_prog_create_from_user+0x684/0x850 net/core/filter.c:1415 fanout_set_data_cbpf net/packet/af_packet.c:1545 [inline] fanout_set_data net/packet/af_packet.c:1579 [inline] packet_setsockopt+0x304f/0x5ac0 net/packet/af_packet.c:3802 __sys_setsockopt+0x496/0x540 net/socket.c:1912 __do_sys_setsockopt net/socket.c:1923 [inline] __se_sys_setsockopt net/socket.c:1920 [inline] __x64_sys_setsockopt+0x15c/0x1c0 net/socket.c:1920 do_syscall_64+0x15b/0x220 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x63/0xe7 RIP: 0033:0x457089 Code: fd b4 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 cb b4 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f57341b0c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000036 RAX: ffffffffffffffda RBX: 00007f57341b16d4 RCX: 0000000000457089 RDX: 0000000000000016 RSI: 0000000000000107 RDI: 0000000000000004 RBP: 00000000009300a0 R08: 0000000000000010 R09: 0000000000000000 R10: 00000000200000c0 R11: 0000000000000246 R12: 00000000ffffffff R13: 00000000004d59d8 R14: 00000000004c9414 R15: 0000000000000000 rcu_sched kthread starved for 100002 jiffies! g24152 c24151 f0x2 RCU_GP_WAIT_FQS(3) ->state=0x0 ->cpu=0 RCU grace-period kthread stack dump: rcu_sched R running task 61848 10 2 0x80000000 Call Trace: context_switch kernel/sched/core.c:2857 [inline] __schedule+0x667/0x770 kernel/sched/core.c:3507 schedule+0x1bc/0x2d0 kernel/sched/core.c:3551 schedule_timeout+0x3f0/0x580 kernel/time/timer.c:1801 rcu_gp_kthread+0x1da1/0x3850 kernel/rcu/tree.c:2179 kthread+0x44d/0x480 kernel/kthread.c:247 ret_from_fork+0x35/0x40 arch/x86/entry/entry_64.S:415