attempt to access beyond end of device
loop0: rw=2049, want=234, limit=128
Internal error: Oops - BTI: 0000000036000001 [#1] PREEMPT SMP
Modules linked in:
CPU: 1 PID: 4570 Comm: syz.0.118 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 : fault_in_readable+0x138/0x354 mm/gup.c:1793
lr : fault_in_readable+0x114/0x354 mm/gup.c:1793
sp : ffff8000205477f0
x29: ffff800020547810 x28: ffff0000ceee3680 x27: 0000000000001000
x26: 0000000000000000 x25: dfff800000000000 x24: 0000000020025040
x23: 0000000000001000 x22: ffff0000ceee36a4 x21: 00000000fffffff2
x20: 0000000000000008 x19: 0000002002504000 x18: 1fffe0003421cd96
x17: 1fffe0003421cd96 x16: ffff800008733c60 x15: ffff80001420eda0
x14: ffff0001a10e6cc0 x13: 1ffff0000282e06b x12: 0000000000ff0100
x11: 0000000000000000 x10: 0000000020025040 x9 : 0000ffffffffffff
x8 : 0000000000000000 x7 : ffff800008750ed4 x6 : 0000000000000000
x5 : 0000000000000000 x4 : 0000000000000001 x3 : 0000000000000001
x2 : 0000000000000008 x1 : 0000000000000001 x0 : 0000000000000000
Call trace:
 fault_in_readable+0x138/0x354 mm/gup.c:1793
 fault_in_iov_iter_readable+0x120/0x248 lib/iov_iter.c:460
 generic_perform_write+0x14c/0x480 mm/filemap.c:3775
 __generic_file_write_iter+0x23c/0x454 mm/filemap.c:3912
 generic_file_write_iter+0xb0/0x1b4 mm/filemap.c:3944
 call_write_iter include/linux/fs.h:2172 [inline]
 new_sync_write fs/read_write.c:507 [inline]
 vfs_write+0x7c8/0xa2c fs/read_write.c:594
 ksys_write+0x120/0x210 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+0x98/0x2b8 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 381f83bf 2a1f03f5 38400948 (381f83a8) 
---[ end trace 30f27181b4ac8ec6 ]---
----------------
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