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verifier bug: error during ctx access conversion(1)
WARNING: CPU: 0 PID: 5985 at kernel/bpf/verifier.c:21448 convert_ctx_accesses kernel/bpf/verifier.c:21448 [inline]
WARNING: CPU: 0 PID: 5985 at kernel/bpf/verifier.c:21448 bpf_check+0x1b6ec/0x1d2d0 kernel/bpf/verifier.c:24736
Modules linked in:
CPU: 0 UID: 0 PID: 5985 Comm: syz.0.17 Not tainted 6.16.0-syzkaller-06574-gd9104cec3e8f-dirty #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
RIP: 0010:convert_ctx_accesses kernel/bpf/verifier.c:21448 [inline]
RIP: 0010:bpf_check+0x1b6ec/0x1d2d0 kernel/bpf/verifier.c:24736
Code: 8b e8 b8 4f af ff 90 0f 0b 90 90 e9 6b 60 ff ff e8 f9 ab eb ff c6 05 e4 67 b6 0d 01 90 48 c7 c7 a0 01 92 8b e8 95 4f af ff 90 <0f> 0b 90 90 e9 b5 bd ff ff e8 d6 ab eb ff c6 05 c6 67 b6 0d 01 90
RSP: 0018:ffffc90002cef600 EFLAGS: 00010246
RAX: 121ed537ab9a0e00 RBX: 0000000000000000 RCX: ffff88810a60d640
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000002
RBP: ffffc90002cefb50 R08: ffff88804b024253 R09: 1ffff1100960484a
R10: dffffc0000000000 R11: ffffed100960484b R12: ffffc900006c605a
R13: dffffc0000000000 R14: ffff888021d10000 R15: 0000000000000004
FS:  00007f33825186c0(0000) GS:ffff8880b8680000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f3382517fc8 CR3: 000000010f278000 CR4: 00000000000006f0
Call Trace:
 <TASK>
 bpf_prog_load+0x1318/0x1930 kernel/bpf/syscall.c:2972
 __sys_bpf+0x528/0x870 kernel/bpf/syscall.c:6022
 __do_sys_bpf kernel/bpf/syscall.c:6132 [inline]
 __se_sys_bpf kernel/bpf/syscall.c:6130 [inline]
 __x64_sys_bpf+0x7c/0x90 kernel/bpf/syscall.c:6130
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f338178eb69
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:00007f3382518038 EFLAGS: 00000246 ORIG_RAX: 0000000000000141
RAX: ffffffffffffffda RBX: 00007f33819b5fa0 RCX: 00007f338178eb69
RDX: 0000000000000094 RSI: 0000200000000240 RDI: 0000000000000005
RBP: 00007f3381811df1 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007f33819b5fa0 R15: 00007ffd9e04e3e8
 </TASK>
