syzbot

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verifier bug: error during ctx access conversion (0)(1)
WARNING: CPU: 0 PID: 3582 at kernel/bpf/verifier.c:21452 convert_ctx_accesses+0x9b0/0xb04 kernel/bpf/verifier.c:21452
Modules linked in:
CPU: 0 UID: 0 PID: 3582 Comm: syz.2.17 Not tainted syzkaller #0 PREEMPT 
Hardware name: linux,dummy-virt (DT)
pstate: 60402009 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
pc : convert_ctx_accesses+0x9b0/0xb04 kernel/bpf/verifier.c:21452
lr : convert_ctx_accesses+0x9b0/0xb04 kernel/bpf/verifier.c:21452
sp : ffff8000893939e0
x29: ffff8000893939e0 x28: faf0000008948000 x27: 0000000000000002
x26: f8ff8000832d5058 x25: 0000000000000000 x24: 0000000000000000
x23: ffff8000816c4744 x22: 0000000000000004 x21: 0000000000000002
x20: 0000000000000004 x19: ffff80008242a948 x18: 0000000000000001
x17: fff07ffffcfe1000 x16: ffff800080000000 x15: fff000007f8d4980
x14: 00000000000002de x13: 0000000000000000 x12: 0000000000000000
x11: 00000000000000c0 x10: b2ff97ff6a7f8b51 x9 : a6a5f6a0197b216f
x8 : f9f0000008b04978 x7 : 0000000000000190 x6 : 000000259596bf72
x5 : 0000000000000001 x4 : fbffff3fffffffff x3 : 000000000000ffff
x2 : 0000000000000000 x1 : 0000000000000000 x0 : f9f0000008b03780
Call trace:
 convert_ctx_accesses+0x9b0/0xb04 kernel/bpf/verifier.c:21452 (P)
 bpf_check+0x12f8/0x2aac kernel/bpf/verifier.c:24743
 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
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