Internal error: Oops - BTI: 0000000036000001 [#1] PREEMPT SMP Modules linked in: CPU: 0 PID: 4633 Comm: syz.1.124 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 : ioctl_fionbio fs/ioctl.c:351 [inline] pc : do_vfs_ioctl+0xd10/0x2370 fs/ioctl.c:792 lr : ioctl_fionbio fs/ioctl.c:350 [inline] lr : do_vfs_ioctl+0xce8/0x2370 fs/ioctl.c:792 sp : ffff8000201e7a00 x29: ffff8000201e7cd0 x28: dfff800000000000 x27: ffff70000403cf48 x26: 1fffe00019a72000 x25: ffff8000201e7a40 x24: 0000000000005421 x23: 0000000000000006 x22: 00000000fffffff2 x21: 0000000000000001 x20: ffff0000c81b6f00 x19: 0000000000000000 x18: 0000000000000000 x17: 0000000000000002 x16: ffff800008922394 x15: 00000000c020660b x14: 0000000000ff0100 x13: 1ffff0000282e06b x12: 0000000000ff0100 x11: 0000000000000000 x10: 0000000000000000 x9 : 0000ffffffffffff x8 : 0000000000000000 x7 : ffff800008750ed4 x6 : 0000000000000000 x5 : 0000000000000000 x4 : 0000000000000001 x3 : 0000000000000001 x2 : 0000000000000008 x1 : 0000000000000001 x0 : 0000000000000000 Call trace: ioctl_fionbio fs/ioctl.c:350 [inline] do_vfs_ioctl+0xd10/0x2370 fs/ioctl.c:792 __do_sys_ioctl fs/ioctl.c:872 [inline] __se_sys_ioctl fs/ioctl.c:860 [inline] __arm64_sys_ioctl+0xe4/0x1c8 fs/ioctl.c:860 __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: ea29011f 9a9f026a d503229f b8400953 (2a1603e1) ---[ end trace 57467b4420e937fd ]--- ---------------- Code disassembly (best guess): 0: ea29011f bics xzr, x8, x9 4: 9a9f026a csel x10, x19, xzr, eq // eq = none 8: d503229f csdb c: b8400953 ldtr w19, [x10] * 10: 2a1603e1 mov w1, w22 <-- trapping instruction