loop1: detected capacity change from 0 to 4096
Internal error: Oops - BTI: 0000000036000001 [#1] PREEMPT SMP
Modules linked in:
CPU: 1 PID: 4956 Comm: syz.1.23 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/23/2026
pstate: 42400405 (nZcv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=jc)
pc : fault_in_readable+0x138/0x358 mm/gup.c:1793
lr : fault_in_readable+0x114/0x358 mm/gup.c:1793
sp : ffff80001ff777f0
x29: ffff80001ff77810 x28: ffff0000c2f30000 x27: 0000000000001000
x26: 0000000000000000 x25: ffff700003feef24 x24: dfff800000000000
x23: 00000000200e0280 x22: 0000000000400140 x21: 00000000fffffff2
x20: 0000000000001000 x19: 000000200e028000 x18: 0000000000000001
x17: 0000000000000000 x16: ffff800008749768 x15: 00000000200e0280
x14: 1ffff0000287a02d x13: dfff800000000000 x12: 00000000e7004bdb
x11: ff80800008749744 x10: 00000000200e0280 x9 : 0000ffffffffffff
x8 : 0000000000000000 x7 : ffff800008766c54 x6 : 0000000000000000
x5 : 0000000000000000 x4 : 0000000000000001 x3 : 0000000000000001
x2 : 0000000000000008 x1 : 0000000000000001 x0 : 0000000000000000
Call trace:
 fault_in_readable+0x138/0x358 mm/gup.c:1793
 fault_in_iov_iter_readable+0x128/0x258 lib/iov_iter.c:460
 generic_perform_write+0x32c/0x490 mm/filemap.c:3775
 __generic_file_write_iter+0x23c/0x44c mm/filemap.c:3912
 ntfs_file_write_iter+0x418/0x4a8 fs/ntfs3/file.c:1151
 call_write_iter include/linux/fs.h:2179 [inline]
 new_sync_write fs/read_write.c:507 [inline]
 vfs_write+0x590/0xa64 fs/read_write.c:594
 ksys_write+0x12c/0x228 fs/read_write.c:647
 __do_sys_write fs/read_write.c:659 [inline]
 __se_sys_write fs/read_write.c:656 [inline]
 __arm64_sys_write+0x7c/0x90 fs/read_write.c:656
 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
 invoke_syscall+0x98/0x28c arch/arm64/kernel/syscall.c:52
 el0_svc_common+0x13c/0x258 arch/arm64/kernel/syscall.c:142
 do_el0_svc+0x5c/0x140 arch/arm64/kernel/syscall.c:181
 el0_svc+0x78/0x1d4 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 381f83bf 2a1f03f5 38400948 (381f83a8) 
---[ end trace 2a047c50217136d4 ]---
----------------
Code disassembly (best guess):
   0:	d503229f 	csdb
   4:	381f83bf 	sturb	wzr, [x29, #-8]
   8:	2a1f03f5 	mov	w21, wzr
   c:	38400948 	ldtrb	w8, [x10]
* 10:	381f83a8 	sturb	w8, [x29, #-8] <-- trapping instruction