rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	Tasks blocked on level-0 rcu_node (CPUs 0-1): P13535/1:b.el
	(detected by 1, t=10504 jiffies, g=43473, q=842)
task:syz.3.2578      state:R  running task     stack:26464 pid:13535 ppid:  4192 flags:0x00004004
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5049 [inline]
 __schedule+0x11bb/0x4390 kernel/sched/core.c:6395
 preempt_schedule_irq+0xb1/0x150 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:get_current arch/x86/include/asm/current.h:15 [inline]
RIP: 0010:__sanitizer_cov_trace_pc+0x4/0x60 kernel/kcov.c:205
Code: 84 00 00 00 00 00 53 48 89 fb e8 17 00 00 00 48 8b 3d d0 6b f1 0b 48 89 de 5b e9 d7 9e 43 00 00 00 cc cc 00 00 cc 48 8b 04 24 <65> 48 8b 0d a4 a3 8a 7e 65 8b 15 a5 a3 8a 7e 81 e2 00 01 ff 00 74
RSP: 0018:ffffc9000356fa98 EFLAGS: 00000246
RAX: ffffffff8809349e RBX: ffffc9000356fc9c RCX: 0000000000080000
RDX: ffffc900062d2000 RSI: 0000000000000267 RDI: ffffffff8b038e80
RBP: ffffc9000356fc30 R08: dffffc0000000000 R09: ffffed1004f72b29
R10: ffffed1004f72b29 R11: 1ffff11004f72b28 R12: ffffc9000356fc98
R13: ffffc90000e26030 R14: dffffc0000000000 R15: 0000000000000001
 __bpf_prog_run include/linux/filter.h:628 [inline]
 bpf_prog_run_xdp include/linux/filter.h:830 [inline]
 bpf_test_run+0x32e/0x7d0 net/bpf/test_run.c:117
 bpf_prog_test_run_xdp+0x3fc/0x920 net/bpf/test_run.c:812
 bpf_prog_test_run+0x31e/0x390 kernel/bpf/syscall.c:3374
 __sys_bpf+0x535/0x670 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: 0033:0x7f1b2ca09749
RSP: 002b:00007f1b2ac70038 EFLAGS: 00000246 ORIG_RAX: 0000000000000141
RAX: ffffffffffffffda RBX: 00007f1b2cc5ffa0 RCX: 00007f1b2ca09749
RDX: 0000000000000050 RSI: 0000200000000600 RDI: 000000000000000a
RBP: 00007f1b2ca8df91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f1b2cc60038 R14: 00007f1b2cc5ffa0 R15: 00007ffccb3a80d8
 </TASK>