syzbot

Internal error: Oops - BTI: 0000000036000001 [#1] PREEMPT SMP
Modules linked in:
CPU: 0 PID: 4218 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 : fetch_robust_entry kernel/futex/core.c:3762 [inline]
pc : exit_robust_list+0x414/0x5f0 kernel/futex/core.c:3813
lr : fetch_robust_entry kernel/futex/core.c:3762 [inline]
lr : exit_robust_list+0x3f0/0x5f0 kernel/futex/core.c:3813
sp : ffff80001fe979f0
x29: ffff80001fe97a30 x28: dfff800000000000 x27: 00000000fffffff2
x26: 0000000000000000 x25: 1fffe0001ad03004 x24: 0000000020000500
x23: 0000000000000000 x22: 0000000000000000 x21: ffff0000d6818024
x20: ffff0000d6818000 x19: ffff0000d6818000 x18: 0000000000000000
x17: 0000000000000000 x16: ffff8000083c52c8 x15: 0000000000000000
x14: 0000000000000000 x13: 1ffff0000282e06b x12: 0000000000ff0100
x11: 0000000000000000 x10: 0000ffffffffffff x9 : 0000000000000000
x8 : 0000000000000000 x7 : ffff800008750ed4 x6 : 0000000000000000
x5 : 0000000000000000 x4 : 0000000000000001 x3 : 0000000000000001
x2 : 0000000000000008 x1 : 0000000000000001 x0 : 0000000000000000
Call trace:
 fetch_robust_entry kernel/futex/core.c:3762 [inline]
 exit_robust_list+0x414/0x5f0 kernel/futex/core.c:3813
 futex_cleanup kernel/futex/core.c:3845 [inline]
 futex_exit_release+0x124/0x1ac kernel/futex/core.c:3946
 exit_mm_release+0x24/0x40 kernel/fork.c:1431
 exit_mm+0xa4/0x684 kernel/exit.c:488
 do_exit+0x4ec/0x1f58 kernel/exit.c:870
 do_group_exit+0x100/0x268 kernel/exit.c:997
 __do_sys_exit_group kernel/exit.c:1008 [inline]
 __se_sys_exit_group kernel/exit.c:1006 [inline]
 __wake_up_parent+0x0/0x60 kernel/exit.c:1006
 __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 2a1703fb 2a1703e0 f840093a (2a1b03e1) 
---[ end trace 06d582ef56963f84 ]---
----------------
Code disassembly (best guess):
   0:	d503229f 	csdb
   4:	2a1703fb 	mov	w27, w23
   8:	2a1703e0 	mov	w0, w23
   c:	f840093a 	ldtr	x26, [x9]
* 10:	2a1b03e1 	mov	w1, w27 <-- trapping instruction