loop0: detected capacity change from 0 to 512
EXT4-fs error (device loop0): ext4_orphan_get:1390: inode #15: comm syz.0.0: casefold flag without casefold feature
EXT4-fs error (device loop0): ext4_orphan_get:1395: comm syz.0.0: couldn't read orphan inode 15 (err -117)
EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback.
------------[ cut here ]------------
Please remove unsupported %y in format string
WARNING: CPU: 0 PID: 5336 at lib/vsprintf.c:2702 format_decode+0x965/0xe30 lib/vsprintf.c:2702
Modules linked in:
CPU: 0 UID: 0 PID: 5336 Comm: syz.0.0 Not tainted 6.15.0-rc3-syzkaller-00094-g02ddfb981de8 #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+0x965/0xe30 lib/vsprintf.c:2702
Code: e8 03 48 b9 00 00 00 00 00 fc ff df 0f b6 04 08 84 c0 0f 85 b4 04 00 00 41 0f b6 34 24 48 c7 c7 40 42 b7 8c e8 dc 85 2b f6 90 <0f> 0b 90 90 e9 6b fc ff ff e8 cd 26 67 f6 48 89 dd e9 55 fa ff ff
RSP: 0018:ffffc9000d627610 EFLAGS: 00010246
RAX: 16c7a62f2a9cf500 RBX: 0000000000000000 RCX: ffff88801eb5a440
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000002
RBP: ffffc9000d62780c R08: 0000000000000003 R09: 0000000000000004
R10: dffffc0000000000 R11: fffffbfff1bfa4b4 R12: ffffc9000d62780c
R13: ffffffff8cb73f24 R14: 0000000000000406 R15: 0000000000000400
FS:  00007f54a1d336c0(0000) GS:ffff88808d2a3000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 0000000050bd2000 CR4: 0000000000352ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 bstr_printf+0xd0/0xb70 lib/vsprintf.c:3227
 ____bpf_trace_printk kernel/trace/bpf_trace.c:378 [inline]
 bpf_trace_printk+0x10e/0x190 kernel/trace/bpf_trace.c:363
 bpf_prog_9969fcbc4dad73b0+0x41/0x43
 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_trace_run kernel/trace/bpf_trace.c:2363 [inline]
 bpf_trace_run10+0x2e1/0x500 kernel/trace/bpf_trace.c:2412
 __bpf_trace_percpu_alloc_percpu+0x364/0x400 include/trace/events/percpu.h:11
 __do_trace_percpu_alloc_percpu include/trace/events/percpu.h:11 [inline]
 trace_percpu_alloc_percpu include/trace/events/percpu.h:11 [inline]
 pcpu_alloc_noprof+0x1532/0x16b0 mm/percpu.c:1892
 alloc_vfsmnt+0x14d/0x490 fs/namespace.c:366
 vfs_create_mount+0x7e/0x3e0 fs/namespace.c:1271
 do_new_mount_fc fs/namespace.c:3812 [inline]
 do_new_mount+0x359/0xa50 fs/namespace.c:3883
 do_mount fs/namespace.c:4221 [inline]
 __do_sys_mount fs/namespace.c:4432 [inline]
 __se_sys_mount+0x317/0x410 fs/namespace.c:4409
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xf6/0x210 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f54a0f9010a
Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 de 1a 00 00 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 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:00007f54a1d32e68 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f54a1d32ef0 RCX: 00007f54a0f9010a
RDX: 0000200000000180 RSI: 00002000000000c0 RDI: 00007f54a1d32eb0
RBP: 0000200000000180 R08: 00007f54a1d32ef0 R09: 0000000000800714
R10: 0000000000800714 R11: 0000000000000246 R12: 00002000000000c0
R13: 00007f54a1d32eb0 R14: 0000000000000485 R15: 0000200000000000
 </TASK>