syzbot

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Please remove unsupported %� in format string
WARNING: CPU: 1 PID: 4165 at lib/vsprintf.c:2667 format_decode+0xc65/0x1330 lib/vsprintf.c:2667
Modules linked in:
CPU: 1 PID: 4165 Comm: syz-executor238 Not tainted 5.15.185-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:2667
Code: e8 30 35 79 fd c6 05 e1 82 56 09 01 41 0f b6 44 1d 00 84 c0 0f 85 be 06 00 00 41 0f be 36 48 c7 c7 a0 cb 5c 8a e8 db 1a 98 05 <0f> 0b e9 fe fc ff ff 48 8b 0c 24 80 e1 07 38 c1 0f 8c d9 f3 ff ff
RSP: 0018:ffffc90002fbf8c8 EFLAGS: 00010246
RAX: d99da3626770a000 RBX: dffffc0000000000 RCX: ffff888074123b80
RDX: 0000000000000000 RSI: 0000000080000001 RDI: 0000000000000000
RBP: ffff0000ffffff00 R08: dffffc0000000000 R09: fffff520005f7e7d
R10: fffff520005f7e7d R11: 1ffff920005f7e7c R12: ffff0a00ffffff00
R13: 1ffff920005f7f5d R14: ffffc90002fbfaec R15: 00000000ffffffdb
FS:  000055555fab9380(0000) GS:ffff8880b9100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000001000 CR3: 0000000022ae7000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 bstr_printf+0xc4/0xef0 lib/vsprintf.c:3238
 ____bpf_trace_printk kernel/trace/bpf_trace.c:381 [inline]
 bpf_trace_printk+0x10a/0x320 kernel/trace/bpf_trace.c:366
 bpf_prog_12183cdb1cd51dab+0x2e/0x4ac
 bpf_dispatcher_nop_func include/linux/bpf.h:790 [inline]
 __bpf_prog_run include/linux/filter.h:628 [inline]
 bpf_prog_run include/linux/filter.h:635 [inline]
 bpf_test_run+0x317/0x870 net/bpf/test_run.c:119
 bpf_prog_test_run_skb+0x9cc/0x1180 net/bpf/test_run.c:669
 bpf_prog_test_run+0x31e/0x390 kernel/bpf/syscall.c:3368
 __sys_bpf+0x535/0x670 kernel/bpf/syscall.c:4669
 __do_sys_bpf kernel/bpf/syscall.c:4755 [inline]
 __se_sys_bpf kernel/bpf/syscall.c:4753 [inline]
 __x64_sys_bpf+0x78/0x90 kernel/bpf/syscall.c:4753
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7ff0d1f5b4a9
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:00007ffec4facf58 EFLAGS: 00000246 ORIG_RAX: 0000000000000141
RAX: ffffffffffffffda RBX: 64006ad576d86aa0 RCX: 00007ff0d1f5b4a9
RDX: 0000000000000028 RSI: 0000200000000080 RDI: 000000000000000a
RBP: 00007ff0d1fce610 R08: 0000000000000000 R09: 00007ffec4fad128
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001
R13: 00007ffec4fad118 R14: 0000000000000001 R15: 0000000000000001
 </TASK>