Internal error: Oops - BTI: 0000000036000001 [#1] PREEMPT SMP Modules linked in: CPU: 0 PID: 4462 Comm: syz.2.52 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_poll+0xda8/0xff0 fs/select.c:1025 lr : do_sys_poll+0xd70/0xff0 fs/select.c:1025 sp : ffff800021d676a0 x29: ffff800021d67c40 x28: 00000000200000c6 x27: 000000000000001d x26: 000000200000c600 x25: ffff800021d67ae2 x24: 00000000fffffff2 x23: 00000000200000c6 x22: ffff800021d67ae2 x21: 00000000200000c6 x20: 00000000200000c6 x19: 0000000000000000 x18: 0000000000000000 x17: 0000000000000002 x16: ffff80000892cc20 x15: 00000000200001b0 x14: 0000000000000000 x13: 1ffff0000282e06b x12: 0000000000ff0100 x11: 0000000000000000 x10: 0000000000000002 x9 : dfff800000000000 x8 : 0000000000000000 x7 : ffff800008750ed4 x6 : 0000000000000000 x5 : 0000000000000000 x4 : 0000000000000001 x3 : 0000000000000001 x2 : 0000000000000008 x1 : 0000000000000001 x0 : 0000000000000000 Call trace: do_sys_poll+0xda8/0xff0 fs/select.c:1025 __do_sys_ppoll fs/select.c:1120 [inline] __se_sys_ppoll fs/select.c:1100 [inline] __arm64_sys_ppoll+0x218/0x2a8 fs/select.c:1100 __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: 2a1303f8 79400328 2a1303e0 78000ae8 (2a1803e1) ---[ end trace d1ff4414e7a3b539 ]--- ---------------- Code disassembly (best guess): 0: 2a1303f8 mov w24, w19 4: 79400328 ldrh w8, [x25] 8: 2a1303e0 mov w0, w19 c: 78000ae8 sttrh w8, [x23] * 10: 2a1803e1 mov w1, w24 <-- trapping instruction