loop0: detected capacity change from 0 to 2048 ------------[ cut here ]------------ Please remove unsupported % in format string WARNING: CPU: 0 PID: 5337 at lib/vsprintf.c:2702 format_decode+0x8a9/0xcb0 lib/vsprintf.c:2702 Modules linked in: CPU: 0 UID: 0 PID: 5337 Comm: syz.0.0 Not tainted 6.15.0-rc2-syzkaller-00087-gcfb2e2c57aef #0 PREEMPT(full) Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 RIP: 0010:format_decode+0x8a9/0xcb0 lib/vsprintf.c:2702 Code: 24 1d 04 01 90 4c 89 f8 48 c1 e8 03 42 0f b6 04 20 84 c0 0f 85 f0 03 00 00 41 0f b6 37 48 c7 c7 e0 59 77 8d e8 b8 b7 55 f5 90 <0f> 0b 90 90 e9 9c fc ff ff e8 29 96 96 f5 4d 89 ee 4c 8b 6c 24 08 RSP: 0018:ffffc9000345f640 EFLAGS: 00010246 RAX: 8f95db0611636900 RBX: ffffffff8d7754e1 RCX: 0000000000100000 RDX: ffffc90020001000 RSI: 0000000000000a1e RDI: 0000000000000a1f RBP: ffffffff8d7754e0 R08: ffffffff81827952 R09: fffffbfff1d7a970 R10: dffffc0000000000 R11: fffffbfff1d7a970 R12: dffffc0000000000 R13: 0000000000000000 R14: 0000000000000000 R15: ffffc9000345f8ec FS: 00007f6af64af6c0(0000) GS:ffff88808c593000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000000 CR3: 000000004066c000 CR4: 0000000000352ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: bstr_printf+0x167/0xef0 lib/vsprintf.c:3227 ____bpf_trace_printk kernel/trace/bpf_trace.c:378 [inline] bpf_trace_printk+0x1a3/0x230 kernel/trace/bpf_trace.c:363 bpf_prog_12183cdb1cd51dab+0x37/0x3b bpf_dispatcher_nop_func include/linux/bpf.h:1316 [inline] __bpf_prog_run include/linux/filter.h:718 [inline] bpf_prog_run include/linux/filter.h:725 [inline] bpf_test_run+0x4ea/0xa90 net/bpf/test_run.c:434 bpf_prog_test_run_skb+0xcc3/0x1850 net/bpf/test_run.c:1093 bpf_prog_test_run+0x2e4/0x360 kernel/bpf/syscall.c:4427 __sys_bpf+0x4ee/0x8b0 kernel/bpf/syscall.c:5852 __do_sys_bpf kernel/bpf/syscall.c:5941 [inline] __se_sys_bpf kernel/bpf/syscall.c:5939 [inline] __x64_sys_bpf+0x7c/0x90 kernel/bpf/syscall.c:5939 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f6af558e169 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f6af64af038 EFLAGS: 00000246 ORIG_RAX: 0000000000000141 RAX: ffffffffffffffda RBX: 00007f6af57b5fa0 RCX: 00007f6af558e169 RDX: 0000000000000028 RSI: 0000200000000080 RDI: 000000000000000a RBP: 00007f6af5610a68 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007f6af57b5fa0 R15: 00007fffaa4de768