Internal error: Oops - BTI: 0000000036000001 [#1] PREEMPT SMP Modules linked in: CPU: 1 PID: 4434 Comm: syz.4.80 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 : futex_unlock_pi kernel/futex/core.c:3211 [inline] pc : do_futex+0xcec/0x257c kernel/futex/core.c:4000 lr : futex_unlock_pi kernel/futex/core.c:3211 [inline] lr : do_futex+0xcc4/0x257c kernel/futex/core.c:4000 sp : ffff80001ffc78a0 x29: ffff80001ffc7c20 x28: 0000000000000001 x27: 0000000000000000 x26: 0000000000000000 x25: 0000000000000000 x24: ffff0000dc8e0000 x23: 0000000000000000 x22: 0000000000000000 x21: 00000000fffffff2 x20: dfff800000000000 x19: ffff700003ff8f30 x18: 0000000000000000 x17: 0000000000000002 x16: ffff8000083bfe64 x15: 000000000000000d x14: 0000000000ff0100 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: futex_unlock_pi kernel/futex/core.c:3211 [inline] do_futex+0xcec/0x257c kernel/futex/core.c:4000 __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: d503229f 2a1703f5 2a1703e0 b840091a (2a1503e1) ---[ end trace f40ffcdf063ff274 ]--- ---------------- Code disassembly (best guess): 0: d503229f csdb 4: 2a1703f5 mov w21, w23 8: 2a1703e0 mov w0, w23 c: b840091a ldtr w26, [x8] * 10: 2a1503e1 mov w1, w21 <-- trapping instruction