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verifier bug: not inlined functions bpf_send_signal#109 is missing func(1)
WARNING: CPU: 0 PID: 4721 at kernel/bpf/verifier.c:22838 do_misc_fixups+0x1784/0x1ab4 kernel/bpf/verifier.c:22838
Modules linked in:
CPU: 0 UID: 0 PID: 4721 Comm: syz.0.388 Not tainted syzkaller #0 PREEMPT 
Hardware name: linux,dummy-virt (DT)
pstate: 60402009 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
pc : do_misc_fixups+0x1784/0x1ab4 kernel/bpf/verifier.c:22838
lr : do_misc_fixups+0x1784/0x1ab4 kernel/bpf/verifier.c:22838
sp : ffff800089ff39a0
x29: ffff800089ff39a0 x28: f4ff800083355000 x27: 0000000000000002
x26: f7f000000dab8000 x25: 0000000000000000 x24: f7f000000dabe200
x23: 000000000000f0ff x22: 0000000000000002 x21: f7f000000dabe128
x20: f7f000000dab8aa8 x19: ffff80008242bb10 x18: 0000000000000014
x17: 00000000ffffffff x16: ffff800082d53ba8 x15: 0000000000001000
x14: 00000000000003d1 x13: 0000000000000000 x12: ffff800082911258
x11: 00000000000000c0 x10: 60bc3b9bff0424d5 x9 : bee78a99a93cde97
x8 : f1f00000093ca478 x7 : 0000000000000004 x6 : 00000044ac0a7496
x5 : 0000000000000002 x4 : fbffff3fffffffff x3 : 000000000000ffff
x2 : 0000000000000000 x1 : 0000000000000000 x0 : f1f00000093c9280
Call trace:
 do_misc_fixups+0x1784/0x1ab4 kernel/bpf/verifier.c:22838 (P)
 bpf_check+0x1308/0x2aac kernel/bpf/verifier.c:24742
 bpf_prog_load+0x634/0xb74 kernel/bpf/syscall.c:2979
 __sys_bpf+0x2e0/0x1a3c kernel/bpf/syscall.c:6029
 __do_sys_bpf kernel/bpf/syscall.c:6139 [inline]
 __se_sys_bpf kernel/bpf/syscall.c:6137 [inline]
 __arm64_sys_bpf+0x24/0x34 kernel/bpf/syscall.c:6137
 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline]
 invoke_syscall+0x48/0x110 arch/arm64/kernel/syscall.c:49
 el0_svc_common.constprop.0+0x40/0xe0 arch/arm64/kernel/syscall.c:132
 do_el0_svc+0x1c/0x28 arch/arm64/kernel/syscall.c:151
 el0_svc+0x34/0x10c arch/arm64/kernel/entry-common.c:879
 el0t_64_sync_handler+0xa0/0xe4 arch/arm64/kernel/entry-common.c:898
 el0t_64_sync+0x1a4/0x1a8 arch/arm64/kernel/entry.S:596
---[ end trace 0000000000000000 ]---