rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	Tasks blocked on level-0 rcu_node (CPUs 0-1): P8649/1:b..l
	(detected by 1, t=10506 jiffies, g=25889, q=1637)
task:syz.5.1093      state:R  running task     stack:26464 pid: 8649 ppid:  4954 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:constant_test_bit arch/x86/include/asm/bitops.h:207 [inline]
RIP: 0010:test_bit include/asm-generic/bitops/instrumented-non-atomic.h:135 [inline]
RIP: 0010:test_ti_thread_flag include/linux/thread_info.h:118 [inline]
RIP: 0010:test_tsk_thread_flag include/linux/sched.h:1994 [inline]
RIP: 0010:task_sigpending include/linux/sched/signal.h:364 [inline]
RIP: 0010:signal_pending include/linux/sched/signal.h:376 [inline]
RIP: 0010:bpf_test_timer_continue+0xcf/0x380 net/bpf/test_run.c:67
Code: 48 81 e5 00 00 02 00 0f 85 06 02 00 00 4c 89 e7 be 08 00 00 00 e8 31 bf ab f9 48 b8 00 00 00 00 00 fc ff df 41 80 7c 05 00 00 <74> 08 4c 89 e7 e8 87 bd ab f9 49 8b 2c 24 48 89 ee 48 83 e6 04 31
RSP: 0018:ffffc9000310fac0 EFLAGS: 00000246
RAX: dffffc0000000000 RBX: 1ffff92000621f75 RCX: ffffffff8810733f
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffff88802b48d940
RBP: 0000000000000000 R08: dffffc0000000000 R09: ffffed1005691b29
R10: ffffed1005691b29 R11: 1ffff11005691b28 R12: ffff88802b48d940
R13: 1ffff11005691b28 R14: ffffc9000310fba8 R15: ffffc9000310fbac
 bpf_test_run+0x391/0x7d0 net/bpf/test_run.c:120
 bpf_prog_test_run_skb+0x9cc/0x1180 net/bpf/test_run.c:669
 bpf_prog_test_run+0x31e/0x390 kernel/bpf/syscall.c:3368
 __sys_bpf+0x535/0x670 kernel/bpf/syscall.c:4669
 __do_sys_bpf kernel/bpf/syscall.c:4755 [inline]
 __se_sys_bpf kernel/bpf/syscall.c:4753 [inline]
 __x64_sys_bpf+0x78/0x90 kernel/bpf/syscall.c:4753
 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: 0033:0x7f35cd2a6be9
RSP: 002b:00007f35cb50e038 EFLAGS: 00000246 ORIG_RAX: 0000000000000141
RAX: ffffffffffffffda RBX: 00007f35cd4ddfa0 RCX: 00007f35cd2a6be9
RDX: 0000000000000050 RSI: 0000200000000600 RDI: 000000000000000a
RBP: 00007f35cd329e19 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f35cd4de038 R14: 00007f35cd4ddfa0 R15: 00007ffd5e1666b8
 </TASK>