syzbot

loop0: detected capacity change from 0 to 128
EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue. Quota mode: none.
Internal error: Oops - BTI: 0000000036000001 [#1] PREEMPT SMP
Modules linked in:
CPU: 1 PID: 4225 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 : fscrypt_ioctl_set_policy+0x188/0x5b8 fs/crypto/policy.c:445
lr : fscrypt_ioctl_set_policy+0x164/0x5b8 fs/crypto/policy.c:445
sp : ffff80001f7b7780
x29: ffff80001f7b7860 x28: ffff0000e29eb478 x27: 0000000000000000
x26: ffff700003ef6ef4 x25: ffff0000d012a780 x24: 00000000fffffff2
x23: ffff0000d5da0024 x22: ffff0000d5da0000 x21: 0000000000000000
x20: 0000000000000000 x19: 1fffe0001abb4004 x18: 0000000000000000
x17: 0000000000000000 x16: ffff800008a3b6bc x15: 00000000c0c0583b
x14: 0000000000ff0100 x13: 1ffff0000282e06b x12: 0000000000ff0100
x11: 0000000000000000 x10: 0000000000000000 x9 : 0000000000000000
x8 : 0000ffffffffffff x7 : ffff800008750ed4 x6 : 0000000000000000
x5 : 0000000000000000 x4 : 0000000000000001 x3 : 0000000000000001
x2 : 0000000000000008 x1 : 0000000000000001 x0 : 0000000000000000
Call trace:
 fscrypt_ioctl_set_policy+0x188/0x5b8 fs/crypto/policy.c:445
 __ext4_ioctl fs/ext4/ioctl.c:1144 [inline]
 ext4_ioctl+0x10bc/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: d503229f 2a1f03f8 2a1f03e0 38400934 (2a1803e1) 
---[ end trace f972b3ecc2e0dbe1 ]---
----------------
Code disassembly (best guess):
   0:	d503229f 	csdb
   4:	2a1f03f8 	mov	w24, wzr
   8:	2a1f03e0 	mov	w0, wzr
   c:	38400934 	ldtrb	w20, [x9]
* 10:	2a1803e1 	mov	w1, w24 <-- trapping instruction