rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P16126/1:b..l (detected by 1, t=10502 jiffies, g=58113, q=2348) task:syz.5.2780 state:R running task stack:24240 pid:16126 ppid: 15371 flags:0x00004004 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 e6 7e 77 08 65 66 8b 05 2e 72 ba 7e 66 85 c0 75 54 bf 01 00 00 00 e8 6f 21 09 00 e8 da fc 35 00 fb 65 8b 05 da 48 b9 7e <85> c0 75 05 e8 19 56 b7 ff 48 c7 04 24 0e 36 e0 45 4b c7 04 37 00 RSP: 0018:ffffc900032af740 EFLAGS: 00000286 RAX: 0000000000000000 RBX: 0000000000000200 RCX: 9ae211feff757500 RDX: dffffc0000000000 RSI: ffffffff8a2b2be0 RDI: ffffffff8a7a4280 RBP: ffffc900032af7d0 R08: ffff8880b903b30b R09: 1ffff11017207661 R10: dffffc0000000000 R11: ffffed1017207662 R12: ffffffff87e704d5 R13: ffff888020454000 R14: dffffc0000000000 R15: 1ffff92000655ee8 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_common net/core/filter.c:2184 [inline] __bpf_redirect+0xa07/0xe90 net/core/filter.c:2191 ____bpf_clone_redirect net/core/filter.c:2471 [inline] bpf_clone_redirect+0x2e1/0x460 net/core/filter.c:2434 bpf_prog_ddd136b54ea55eb4+0x19/0x96c 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: 0033:0x7f615878c0d9 RSP: 002b:00007f61569e4028 EFLAGS: 00000246 ORIG_RAX: 0000000000000141 RAX: ffffffffffffffda RBX: 00007f6158a13fa0 RCX: 00007f615878c0d9 RDX: 0000000000000050 RSI: 00002000000003c0 RDI: 000000000000000a RBP: 00007f6158823024 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f6158a14038 R14: 00007f6158a13fa0 R15: 00007ffcdd6ccd38