syzbot

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Please remove unsupported %� in format string
WARNING: CPU: 0 PID: 5084 at lib/vsprintf.c:2680 format_decode+0x1193/0x1bb0 lib/vsprintf.c:2680
Modules linked in:
CPU: 0 PID: 5084 Comm: syz-executor368 Not tainted 6.9.0-rc5-syzkaller-00296-g5eb4573ea63d #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
RIP: 0010:format_decode+0x1193/0x1bb0 lib/vsprintf.c:2680
Code: 7f 1c f6 c6 05 e1 1d 1a 04 01 90 43 0f b6 04 34 84 c0 0f 85 14 0a 00 00 41 0f b6 75 00 48 c7 c7 40 3a e8 8c e8 ce fb de f5 90 <0f> 0b 90 90 e9 0e fd ff ff 48 8b 4c 24 10 80 e1 07 38 c1 0f 8c 14
RSP: 0018:ffffc900051e7660 EFLAGS: 00010246
RAX: 6106cad1711dd100 RBX: 0000000000000000 RCX: ffff888018388000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc900051e7750 R08: ffffffff81588072 R09: 1ffff1101728519a
R10: dffffc0000000000 R11: ffffed101728519b R12: 1ffff92000a3cf31
R13: ffffc900051e798c R14: dffffc0000000000 R15: ffff0000ffffff00
FS:  000055558fcda380(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f6389ff1b10 CR3: 000000006a70c000 CR4: 0000000000350ef0
Call Trace:
 <TASK>
 bstr_printf+0x137/0x1210 lib/vsprintf.c:3253
 ____bpf_trace_printk kernel/trace/bpf_trace.c:390 [inline]
 bpf_trace_printk+0x1a1/0x230 kernel/trace/bpf_trace.c:375
 bpf_prog_12183cdb1cd51dab+0x36/0x3e
 bpf_dispatcher_nop_func include/linux/bpf.h:1234 [inline]
 __bpf_prog_run include/linux/filter.h:657 [inline]
 bpf_prog_run include/linux/filter.h:664 [inline]
 bpf_test_run+0x40b/0x900 net/bpf/test_run.c:425
 bpf_prog_test_run_skb+0xafa/0x13a0 net/bpf/test_run.c:1058
 bpf_prog_test_run+0x33c/0x3b0 kernel/bpf/syscall.c:4269
 __sys_bpf+0x48d/0x810 kernel/bpf/syscall.c:5678
 __do_sys_bpf kernel/bpf/syscall.c:5767 [inline]
 __se_sys_bpf kernel/bpf/syscall.c:5765 [inline]
 __x64_sys_bpf+0x7c/0x90 kernel/bpf/syscall.c:5765
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf5/0x240 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fa3b3f824e9
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:00007ffdff97b7d8 EFLAGS: 00000246 ORIG_RAX: 0000000000000141
RAX: ffffffffffffffda RBX: 00007ffdff97b9a8 RCX: 00007fa3b3f824e9
RDX: 0000000000000028 RSI: 0000000020000080 RDI: 000000000000000a
RBP: 00007fa3b3ff5610 R08: 0000000000000000 R09: 00007ffdff97b9a8
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001
R13: 00007ffdff97b998 R14: 0000000000000001 R15: 0000000000000001
 </TASK>