syzbot

Internal error: Oops - BTI: 0000000036000001 [#1] PREEMPT SMP
Modules linked in:
CPU: 1 PID: 4164 Comm: syz.4.6 Not tainted 5.15.189-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/30/2025
pstate: 424004c5 (nZcv daIF +PAN -UAO +TCO -DIT -SSBS BTYPE=jc)
pc : get_futex_value_locked kernel/futex/core.c:793 [inline]
pc : __fixup_pi_state_owner kernel/futex/core.c:2672 [inline]
pc : fixup_pi_state_owner+0x334/0x800 kernel/futex/core.c:2771
lr : __uaccess_mask_ptr arch/arm64/include/asm/uaccess.h:239 [inline]
lr : get_futex_value_locked kernel/futex/core.c:790 [inline]
lr : __fixup_pi_state_owner kernel/futex/core.c:2672 [inline]
lr : fixup_pi_state_owner+0x30c/0x800 kernel/futex/core.c:2771
sp : ffff80001fcc77b0
x29: ffff80001fcc7840 x28: 0000000000000000 x27: ffff0000c240b088
x26: dfff800000000000 x25: 00000000c0000000 x24: 00000000fffffff2
x23: 0000000000000000 x22: ffff0000c2409b40 x21: 0000000000000007
x20: 1fffe00018481611 x19: 0000000000000000 x18: 0000000000000000
x17: ffff800016d04000 x16: ffff8000083cae18 x15: ffff8000167e4500
x14: ffff0000c240a540 x13: 1ffff0000282e06b x12: 0000000000080000
x11: 0000ffffffffffff x10: 0000000020048000 x9 : 0000000020048000
x8 : 0000000020048000 x7 : ffff80000820263c
 x6 : 0000000000000000
x5 : 0000000000000080
 x4 : 0000000000000000 x3 : 0000000000000002

x2 : 0000000000000008
 x1 : 0000000000000001 x0 : 0000000000000000

Call trace:
 get_futex_value_locked kernel/futex/core.c:790 [inline]
 __fixup_pi_state_owner kernel/futex/core.c:2672 [inline]
 fixup_pi_state_owner+0x334/0x800 kernel/futex/core.c:2771
 fixup_owner kernel/futex/core.c:-1 [inline]
 futex_wait_requeue_pi kernel/futex/core.c:3517 [inline]
 do_futex+0x238c/0x257c kernel/futex/core.c:4005
 __do_sys_futex kernel/futex/core.c:4059 [inline]
 __se_sys_futex kernel/futex/core.c:4040 [inline]
 __arm64_sys_futex+0x388/0x400 kernel/futex/core.c:4040
 __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: b85dc3bc 2a1c03f8 2a1c03e0 b8400913 (2a1803e1) 
---[ end trace 64de880c4df1cebc ]---
----------------
Code disassembly (best guess):
   0:	b85dc3bc 	ldur	w28, [x29, #-36]
   4:	2a1c03f8 	mov	w24, w28
   8:	2a1c03e0 	mov	w0, w28
   c:	b8400913 	ldtr	w19, [x8]
* 10:	2a1803e1 	mov	w1, w24 <-- trapping instruction