syzbot

loop0: detected capacity change from 0 to 4096
EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue. Quota mode: writeback.
Internal error: Oops - BTI: 0000000036000001 [#1] PREEMPT SMP
Modules linked in:
CPU: 1 PID: 4405 Comm: syz.0.17 Not tainted 5.15.189-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/30/2025
pstate: 42400405 (nZcv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=jc)
pc : ext4_shutdown fs/ext4/ioctl.c:567 [inline]
pc : __ext4_ioctl fs/ext4/ioctl.c:1254 [inline]
pc : ext4_ioctl+0x1d44/0x3614 fs/ext4/ioctl.c:1282
lr : ext4_shutdown fs/ext4/ioctl.c:567 [inline]
lr : __ext4_ioctl fs/ext4/ioctl.c:1254 [inline]
lr : ext4_ioctl+0x1d1c/0x3614 fs/ext4/ioctl.c:1282
sp : ffff80001fcf78c0
x29: ffff80001fcf7cd0 x28: dfff800000000000 x27: ffff700003f9ef1c
x26: 1fffe00019199ccf x25: ffff0000c8ccc000 x24: ffff0000c8cce000
x23: ffff0000c1d93680 x22: 0000000000000000 x21: 0000000000000000
x20: ffff0000c8cce678 x19: 00000000fffffff2 x18: 0000000000000000
x17: 0000000000000000 x16: ffff800008cc38d0 x15: 00000000c0c0583b
x14: 0000000000ff0100 x13: 1ffff0000282e06b x12: 0000000000ff0100
x11: 0000000000000000 x10: 0000000000000000 x9 : 0000ffffffffffff
x8 : 0000000000000000 x7 : ffff800008750ed4 x6 : 0000000000000000
x5 : 0000000000000000 x4 : 0000000000000001 x3 : 0000000000000001
x2 : 0000000000000008 x1 : 0000000000000001 x0 : 0000000000000000
Call trace:
 ext4_shutdown fs/ext4/ioctl.c:567 [inline]
 __ext4_ioctl fs/ext4/ioctl.c:1254 [inline]
 ext4_ioctl+0x1d44/0x3614 fs/ext4/ioctl.c:1282
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:874 [inline]
 __se_sys_ioctl fs/ioctl.c:860 [inline]
 __arm64_sys_ioctl+0x14c/0x1c8 fs/ioctl.c:860
 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
 invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:52
 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142
 do_el0_svc+0x58/0x14c arch/arm64/kernel/syscall.c:181
 el0_svc+0x78/0x1e0 arch/arm64/kernel/entry-common.c:608
 el0t_64_sync_handler+0xcc/0xe4 arch/arm64/kernel/entry-common.c:626
 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584
Code: ea29011f 9a9f02aa d503229f b8400956 (2a1303e1) 
---[ end trace 0d562abdae00a9ae ]---
----------------
Code disassembly (best guess):
   0:	ea29011f 	bics	xzr, x8, x9
   4:	9a9f02aa 	csel	x10, x21, xzr, eq	// eq = none
   8:	d503229f 	csdb
   c:	b8400956 	ldtr	w22, [x10]
* 10:	2a1303e1 	mov	w1, w19 <-- trapping instruction