rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P6735/1:b..l (detected by 1, t=10503 jiffies, g=17809, q=463) task:syz.3.1096 state:R running task stack:24304 pid: 6735 ppid: 4187 flags:0x00004000 Call Trace: context_switch kernel/sched/core.c:5049 [inline] __schedule+0x11c3/0x4350 kernel/sched/core.c:6395 preempt_schedule_irq+0xbb/0x160 kernel/sched/core.c:6799 irqentry_exit+0x63/0x70 kernel/entry/common.c:432 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:676 RIP: 0010:should_resched arch/x86/include/asm/preempt.h:103 [inline] RIP: 0010:__local_bh_enable_ip+0x13e/0x1c0 kernel/softirq.c:408 Code: 8a e8 86 4e 77 08 65 66 8b 05 2e 62 ba 7e 66 85 c0 75 54 bf 01 00 00 00 e8 6f 21 09 00 e8 aa 04 36 00 fb 65 8b 05 da 38 b9 7e <85> c0 75 05 e8 19 46 b7 ff 48 c7 04 24 0e 36 e0 45 4b c7 04 37 00 RSP: 0018:ffffc9000321f540 EFLAGS: 00000286 RAX: 0000000000000000 RBX: 0000000000000200 RCX: 06957d36caa37a00 RDX: dffffc0000000000 RSI: ffffffff8a2b2be0 RDI: ffffffff8a7a4540 RBP: ffffc9000321f5d0 R08: ffff8880b903b30b R09: 1ffff11017207661 R10: dffffc0000000000 R11: ffffed1017207662 R12: ffffffff87e6c415 R13: ffff888019ff4000 R14: dffffc0000000000 R15: 1ffff92000643ea8 rcu_read_unlock_bh include/linux/rcupdate.h:810 [inline] __dev_queue_xmit+0x1b64/0x2e50 net/core/dev.c:4341 __bpf_tx_skb net/core/filter.c:2136 [inline] __bpf_redirect_no_mac net/core/filter.c:2170 [inline] __bpf_redirect+0x693/0xe90 net/core/filter.c:2193 ____bpf_clone_redirect net/core/filter.c:2471 [inline] bpf_clone_redirect+0x2e1/0x460 net/core/filter.c:2434 bpf_prog_bf17f61a12bc632f+0x56/0x284 bpf_dispatcher_nop_func include/linux/bpf.h:889 [inline] __bpf_prog_run include/linux/filter.h:628 [inline] bpf_prog_run include/linux/filter.h:635 [inline] bpf_test_run+0x2a8/0x800 net/bpf/test_run.c:119 bpf_prog_test_run_skb+0x9fb/0x1190 net/bpf/test_run.c:678 bpf_prog_test_run+0x31c/0x390 kernel/bpf/syscall.c:3374 __sys_bpf+0x5a5/0x6f0 kernel/bpf/syscall.c:4675 __do_sys_bpf kernel/bpf/syscall.c:4761 [inline] __se_sys_bpf kernel/bpf/syscall.c:4759 [inline] __x64_sys_bpf+0x78/0x90 kernel/bpf/syscall.c:4759 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x66/0xd0 RIP: 0033:0x7fea92fcf159 RSP: 002b:00007fea91227028 EFLAGS: 00000246 ORIG_RAX: 0000000000000141 RAX: ffffffffffffffda RBX: 00007fea93256fa0 RCX: 00007fea92fcf159 RDX: 000000000000002c RSI: 0000200000000080 RDI: 000000000000000a RBP: 00007fea93066024 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fea93257038 R14: 00007fea93256fa0 R15: 00007ffe7cfb3c88