syzbot

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Please remove unsupported %� in format string
WARNING: CPU: 1 PID: 4247 at lib/vsprintf.c:2661 format_decode+0xc65/0x1330 lib/vsprintf.c:2661
Modules linked in:
CPU: 1 PID: 4247 Comm: syz-executor823 Not tainted 6.1.141-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
RIP: 0010:format_decode+0xc65/0x1330 lib/vsprintf.c:2661
Code: e8 90 1d 80 f7 c6 05 f1 77 e9 03 01 41 0f b6 44 1d 00 84 c0 0f 85 be 06 00 00 41 0f be 36 48 c7 c7 00 dc 90 8b e8 1b 30 4c f7 <0f> 0b e9 fe fc ff ff 48 8b 0c 24 80 e1 07 38 c1 0f 8c d9 f3 ff ff
RSP: 0018:ffffc90003c97888 EFLAGS: 00010246
RAX: a4764d31028bb600 RBX: dffffc0000000000 RCX: ffff888024cc5940
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000002
RBP: ffff0000ffffff00 R08: dffffc0000000000 R09: fffff52000792ea1
R10: fffff52000792ea1 R11: 1ffff92000792ea0 R12: ffff0a00ffffff00
R13: 1ffff92000792f55 R14: ffffc90003c97aac R15: 00000000ffffffdb
FS:  000055558ae16380(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00005642855c0000 CR3: 0000000028d8d000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 bstr_printf+0xc4/0xef0 lib/vsprintf.c:3234
 ____bpf_trace_printk kernel/trace/bpf_trace.c:389 [inline]
 bpf_trace_printk+0x10b/0x190 kernel/trace/bpf_trace.c:374
 bpf_prog_12183cdb1cd51dab+0x2e/0x32
 bpf_dispatcher_nop_func include/linux/bpf.h:1001 [inline]
 __bpf_prog_run include/linux/filter.h:603 [inline]
 bpf_prog_run include/linux/filter.h:610 [inline]
 bpf_test_run+0x323/0x870 net/bpf/test_run.c:402
 bpf_prog_test_run_skb+0xa40/0x11b0 net/bpf/test_run.c:1183
 bpf_prog_test_run+0x31e/0x390 kernel/bpf/syscall.c:3685
 __sys_bpf+0x593/0x6d0 kernel/bpf/syscall.c:5038
 __do_sys_bpf kernel/bpf/syscall.c:5124 [inline]
 __se_sys_bpf kernel/bpf/syscall.c:5122 [inline]
 __x64_sys_bpf+0x78/0x90 kernel/bpf/syscall.c:5122
 do_syscall_x64 arch/x86/entry/common.c:51 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:81
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f4c521064a9
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:00007fff85d5f978 EFLAGS: 00000246 ORIG_RAX: 0000000000000141
RAX: ffffffffffffffda RBX: 64006ad576d86aa0 RCX: 00007f4c521064a9
RDX: 0000000000000028 RSI: 0000200000000080 RDI: 000000000000000a
RBP: 00007f4c52179610 R08: 0000000000000000 R09: 00007fff85d5fb48
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001
R13: 00007fff85d5fb38 R14: 0000000000000001 R15: 0000000000000001
 </TASK>