rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P5163/1:b..l (detected by 1, t=10502 jiffies, g=9289, q=2191) task:syz.1.246 state:R running task stack:26832 pid: 5163 ppid: 4185 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:5049 [inline] __schedule+0x11ef/0x43c0 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:__sanitizer_cov_trace_pc+0x0/0x60 kernel/kcov.c:202 Code: 66 2e 0f 1f 84 00 00 00 00 00 53 48 89 fb e8 17 00 00 00 48 8b 3d 20 bc 10 0c 48 89 de 5b e9 37 42 44 00 00 00 cc cc 00 00 cc <48> 8b 04 24 65 48 8b 0d 74 4d 89 7e 65 8b 15 75 4d 89 7e 81 e2 00 RSP: 0018:ffffc900032cfa98 EFLAGS: 00000206 RAX: ffffffff881e0410 RBX: 0000000000000060 RCX: ffff888077550000 RDX: 0000000000000002 RSI: 0000000000000060 RDI: 0000000000000000 RBP: ffffc900032cfc30 R08: ffff888077550007 R09: 1ffff1100eeaa000 R10: dffffc0000000000 R11: ffffed100eeaa001 R12: 1ffff1101720718c R13: ffff8880b9038c48 R14: dffffc0000000000 R15: ffff8880b9038c60 bpf_prog_run_xdp include/linux/filter.h:826 [inline] bpf_test_run+0x269/0x800 net/bpf/test_run.c:117 bpf_prog_test_run_xdp+0x3ed/0x920 net/bpf/test_run.c:817 bpf_prog_test_run+0x31e/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: 0033:0x7fcd2a5ec799 RSP: 002b:00007fcd28825028 EFLAGS: 00000246 ORIG_RAX: 0000000000000141 RAX: ffffffffffffffda RBX: 00007fcd2a866090 RCX: 00007fcd2a5ec799 RDX: 000000000000003e RSI: 0000200000000240 RDI: 000000000000000a RBP: 00007fcd2a682bd9 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fcd2a866128 R14: 00007fcd2a866090 R15: 00007fff5f1b6f18