syzbot

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Please remove unsupported %� in format string
WARNING: CPU: 0 PID: 5816 at lib/vsprintf.c:2693 format_decode+0xac6/0xd40 lib/vsprintf.c:2693
Modules linked in:
CPU: 0 UID: 0 PID: 5816 Comm: syz-executor538 Not tainted 6.14.0-rc6-syzkaller-00263-gd1275e99d1c4 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
RIP: 0010:format_decode+0xac6/0xd40 lib/vsprintf.c:2693
Code: ea 03 0f b6 04 02 4c 89 ea 83 e2 07 38 d0 7f 08 84 c0 0f 85 c2 01 00 00 41 0f b6 75 00 48 c7 c7 e0 8c cf 8c e8 0b f2 25 f6 90 <0f> 0b 90 90 e9 d3 fa ff ff 49 bc 00 00 00 00 00 fc ff df 31 db e8
RSP: 0018:ffffc90002f176a8 EFLAGS: 00010282
RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffff817a2269
RDX: ffff88807f908000 RSI: ffffffff817a2276 RDI: 0000000000000001
RBP: ffffc90002f17750 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000000004
R13: ffffc90002f17954 R14: ffffc90002f177e0 R15: 0000000000000000
FS:  0000555559350380(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055c6b4cb90a8 CR3: 000000004eadc000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 bstr_printf+0x16e/0x10d0 lib/vsprintf.c:3218
 ____bpf_trace_printk kernel/trace/bpf_trace.c:378 [inline]
 bpf_trace_printk+0x10b/0x190 kernel/trace/bpf_trace.c:363
 bpf_prog_21da1b68f62e1237+0x37/0x3e
 bpf_dispatcher_nop_func include/linux/bpf.h:1290 [inline]
 __bpf_prog_run include/linux/filter.h:701 [inline]
 bpf_prog_run include/linux/filter.h:708 [inline]
 bpf_test_run+0x49d/0xa90 net/bpf/test_run.c:434
 bpf_prog_test_run_skb+0xb93/0x2280 net/bpf/test_run.c:1093
 bpf_prog_test_run kernel/bpf/syscall.c:4407 [inline]
 __sys_bpf+0xfc6/0x49c0 kernel/bpf/syscall.c:5813
 __do_sys_bpf kernel/bpf/syscall.c:5902 [inline]
 __se_sys_bpf kernel/bpf/syscall.c:5900 [inline]
 __x64_sys_bpf+0x78/0xc0 kernel/bpf/syscall.c:5900
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f03d25f54a9
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:00007ffdefa4f168 EFLAGS: 00000246 ORIG_RAX: 0000000000000141
RAX: ffffffffffffffda RBX: 64006ad576d86aa0 RCX: 00007f03d25f54a9
RDX: 0000000000000028 RSI: 0000400000000080 RDI: 000000000000000a
RBP: 00007f03d2668610 R08: 0000000000000000 R09: 00007ffdefa4f338
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001
R13: 00007ffdefa4f328 R14: 0000000000000001 R15: 0000000000000001
 </TASK>