syzbot

Internal error: Oops - BTI: 0000000036000001 [#1] PREEMPT SMP
Modules linked in:
CPU: 0 PID: 4250 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 : __do_sys_prctl kernel/sys.c:2319 [inline]
pc : __se_sys_prctl kernel/sys.c:2298 [inline]
pc : __arm64_sys_prctl+0xbe0/0xf14 kernel/sys.c:2298
lr : sign_extend64 include/linux/bitops.h:183 [inline]
lr : __uaccess_mask_ptr arch/arm64/include/asm/uaccess.h:244 [inline]
lr : __do_sys_prctl kernel/sys.c:2319 [inline]
lr : __se_sys_prctl kernel/sys.c:2298 [inline]
lr : __arm64_sys_prctl+0xbac/0xf14 kernel/sys.c:2298
sp : ffff800020be7cc0
x29: ffff800020be7d20 x28: ffff0000d7edb680 x27: ffff800020be7cc0
x26: 1ffff0000417cf98 x25: dfff800000000000 x24: 00000000ffffffda
x23: 0000000000000000 x22: 0000000000000000 x21: 0000000000000000
x20: ffff0000d7edbba0 x19: 0000000000000000 x18: 0000000000000000
x17: 0000000000000000 x16: ffff8000081dfaa0 x15: 000000000000003d
x14: 0000000000ff0100 x13: 1ffff0000282e06b x12: 0000000000ff0100
x11: 0000000000000000 x10: 1fffe0001afdb774 x9 : 00000000fffffff2
x8 : 0000000000000000 x7 : ffff800008750ed4 x6 : 0000000000000000
x5 : 0000000000000000 x4 : 0000000000000001 x3 : 0000000000000001
x2 : 0000000000000008 x1 : 0000000000000001 x0 : 0000000000000000
Call trace:
 __do_sys_prctl kernel/sys.c:2319 [inline]
 __se_sys_prctl kernel/sys.c:2298 [inline]
 __arm64_sys_prctl+0xbe0/0xf14 kernel/sys.c:2298
 __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: 35001248 2a1f03e9 b9400288 b8000aa8 (93407d20) 
---[ end trace 23b74ef4d7a18028 ]---
----------------
Code disassembly (best guess):
   0:	35001248 	cbnz	w8, 0x248
   4:	2a1f03e9 	mov	w9, wzr
   8:	b9400288 	ldr	w8, [x20]
   c:	b8000aa8 	sttr	w8, [x21]
* 10:	93407d20 	sxtw	x0, w9 <-- trapping instruction