syzbot

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Please remove unsupported %� in format string
WARNING: CPU: 1 PID: 5773 at lib/vsprintf.c:2679 format_decode+0xcfd/0x13d0 lib/vsprintf.c:2679
Modules linked in:
CPU: 1 PID: 5773 Comm: syz-executor315 Not tainted 6.6.94-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
RIP: 0010:format_decode+0xcfd/0x13d0 lib/vsprintf.c:2679
Code: ff e8 87 89 2e f7 c6 05 ae 53 dd 03 01 41 0f b6 04 1c 84 c0 0f 85 be 06 00 00 41 0f b6 36 48 c7 c7 20 93 c8 8b e8 63 ee f8 f6 <0f> 0b e9 79 fe ff ff 48 8b 0c 24 80 e1 07 38 c1 0f 8c 46 f3 ff ff
RSP: 0018:ffffc9000463f888 EFLAGS: 00010246
RAX: 120d1b4566783d00 RBX: dffffc0000000000 RCX: ffff8880294f0000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000002
RBP: ffff0000ffffff00 R08: ffffc9000463f587 R09: 1ffff920008c7eb0
R10: dffffc0000000000 R11: fffff520008c7eb1 R12: 1ffff920008c7f55
R13: 0000000000000000 R14: ffffc9000463faac R15: ffff0a00ffffff00
FS:  0000555587413380(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000001000 CR3: 0000000079ff2000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 bstr_printf+0xc4/0xf90 lib/vsprintf.c:3252
 ____bpf_trace_printk kernel/trace/bpf_trace.c:386 [inline]
 bpf_trace_printk+0x10f/0x190 kernel/trace/bpf_trace.c:371
 bpf_prog_12183cdb1cd51dab+0x36/0x3a
 bpf_dispatcher_nop_func include/linux/bpf.h:1213 [inline]
 __bpf_prog_run include/linux/filter.h:612 [inline]
 bpf_prog_run include/linux/filter.h:619 [inline]
 bpf_test_run+0x340/0x8a0 net/bpf/test_run.c:424
 bpf_prog_test_run_skb+0xa67/0x11c0 net/bpf/test_run.c:1050
 bpf_prog_test_run+0x321/0x390 kernel/bpf/syscall.c:4123
 __sys_bpf+0x440/0x800 kernel/bpf/syscall.c:5485
 __do_sys_bpf kernel/bpf/syscall.c:5571 [inline]
 __se_sys_bpf kernel/bpf/syscall.c:5569 [inline]
 __x64_sys_bpf+0x7c/0x90 kernel/bpf/syscall.c:5569
 do_syscall_x64 arch/x86/entry/common.c:51 [inline]
 do_syscall_64+0x55/0xb0 arch/x86/entry/common.c:81
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f31c33004a9
Code: 48 83 c4 28 c3 e8 37 17 00 00 0f 1f 80 00 00 00 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 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffeb7eac3e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000141
RAX: ffffffffffffffda RBX: 64006ad576d86aa0 RCX: 00007f31c33004a9
RDX: 0000000000000028 RSI: 0000200000000080 RDI: 000000000000000a
RBP: 00007f31c3373610 R08: 0000000000000000 R09: 00007ffeb7eac5b8
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001
R13: 00007ffeb7eac5a8 R14: 0000000000000001 R15: 0000000000000001
 </TASK>