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verifier bug: error during ctx access conversion(1)
WARNING: CPU: 1 PID: 3904 at kernel/bpf/verifier.c:21364 convert_ctx_accesses kernel/bpf/verifier.c:21364 [inline]
WARNING: CPU: 1 PID: 3904 at kernel/bpf/verifier.c:21364 bpf_check+0x5097/0x52a0 kernel/bpf/verifier.c:24655
Modules linked in:
CPU: 1 UID: 0 PID: 3904 Comm: syz.2.16 Not tainted 6.16.0-rc3-syzkaller #0 PREEMPT(undef) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
RIP: 0010:convert_ctx_accesses kernel/bpf/verifier.c:21364 [inline]
RIP: 0010:bpf_check+0x5097/0x52a0 kernel/bpf/verifier.c:24655
Code: 8b 83 8c 5e 00 00 eb cc 4c 89 e7 e8 f3 56 14 00 e9 4f f5 ff ff c6 05 d7 8e 46 02 01 90 48 c7 c7 1b b2 27 83 e8 aa 57 cd ff 90 <0f> 0b 90 90 e9 b8 e2 ff ff c6 05 c0 8e 46 02 01 90 48 c7 c7 dd 3b
RSP: 0018:ffffc900001c3b40 EFLAGS: 00010246
RAX: 4ac1a9fd7638ba00 RBX: ffff88811acb0000 RCX: 0000000000000000
RDX: 0000000000000002 RSI: ffffffff831aa8d8 RDI: 00000000ffffffff
RBP: ffffc900001c3d20 R08: 0000000000001fff R09: ffffffff836ad2f0
R10: 0000000000005ffd R11: 00000000ffffdfff R12: 0000000000000004
R13: 0000000000000000 R14: ffffc90000c11048 R15: 0000000000000004
FS:  00007f32dbf4f6c0(0000) GS:ffff8882b3817000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000020000000d000 CR3: 000000011cdee000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 bpf_prog_load+0x65c/0x6f0 kernel/bpf/syscall.c:2972
 __sys_bpf+0x3f4/0x590 kernel/bpf/syscall.c:5978
 __do_sys_bpf kernel/bpf/syscall.c:6085 [inline]
 __se_sys_bpf kernel/bpf/syscall.c:6083 [inline]
 __x64_sys_bpf+0x17/0x20 kernel/bpf/syscall.c:6083
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xe2/0x2f0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f32dc4de929
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f32dbf4f038 EFLAGS: 00000246 ORIG_RAX: 0000000000000141
RAX: ffffffffffffffda RBX: 00007f32dc705fa0 RCX: 00007f32dc4de929
RDX: 0000000000000070 RSI: 0000200000000440 RDI: 0000000000000005
RBP: 00007f32dc560b39 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007f32dc705fa0 R15: 00007fffd53ebfa8
 </TASK>