syzbot

Internal error: Oops - BTI: 0000000036000001 [#1] PREEMPT SMP
Modules linked in:
CPU: 1 PID: 4182 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 : epoll_put_uevent include/linux/eventpoll.h:81 [inline]
pc : ep_send_events fs/eventpoll.c:1732 [inline]
pc : ep_poll+0x854/0x1598 fs/eventpoll.c:1861
lr : epoll_put_uevent include/linux/eventpoll.h:81 [inline]
lr : ep_send_events fs/eventpoll.c:1732 [inline]
lr : ep_poll+0x82c/0x1598 fs/eventpoll.c:1861
sp : ffff80001f6079c0
x29: ffff80001f607bc0 x28: 1fffe0001904b39b x27: dfff800000000000
x26: 1fffe000190f4a3c x25: ffff0000c8259cd8 x24: 0000000000000000
x23: 0000000020000280 x22: 0000000000000008 x21: ffff0000c8259ce0
x20: ffff0000c8259d20 x19: 00000000fffffff2 x18: 0000000000000000
x17: 0000000000000000 x16: ffff800008a01258 x15: 0000000000000000
x14: 0000000000000000 x13: 1ffff0000282e06b x12: 0000000000ff0100
x11: 0000000000000000 x10: 0000ffffffffffff x9 : 0000000020000280
x8 : 0000000020000280 x7 : ffff800008750ed4 x6 : 0000000000000000
x5 : 0000000000000000 x4 : 0000000000000001 x3 : 0000000000000001
x2 : 0000000000000008 x1 : 0000000000000001 x0 : 0000000000000000
Call trace:
 epoll_put_uevent include/linux/eventpoll.h:81 [inline]
 ep_send_events fs/eventpoll.c:1732 [inline]
 ep_poll+0x854/0x1598 fs/eventpoll.c:1861
 do_epoll_wait+0x1a0/0x218 fs/eventpoll.c:2296
 do_epoll_pwait+0x70/0x19c fs/eventpoll.c:2330
 __do_sys_epoll_pwait2 fs/eventpoll.c:2362 [inline]
 __se_sys_epoll_pwait2 fs/eventpoll.c:2348 [inline]
 __arm64_sys_epoll_pwait2+0x184/0x208 fs/eventpoll.c:2348
 __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: b940dff8 2a1803f3 2a1803e0 b8000936 (2a1303e1) 
---[ end trace 71653509234f3c8c ]---
----------------
Code disassembly (best guess):
   0:	b940dff8 	ldr	w24, [sp, #220]
   4:	2a1803f3 	mov	w19, w24
   8:	2a1803e0 	mov	w0, w24
   c:	b8000936 	sttr	w22, [x9]
* 10:	2a1303e1 	mov	w1, w19 <-- trapping instruction