Internal error: Oops - BTI: 0000000036000001 [#1] PREEMPT SMP
Modules linked in:
CPU: 0 PID: 4188 Comm: syz.0.8 Not tainted 5.15.189-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/30/2025
pstate: 22400405 (nzCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=jc)
pc : copy_from_kernel_nofault+0x9c/0x330 mm/maccess.c:37
lr : copy_from_kernel_nofault+0x78/0x330 mm/maccess.c:37
sp : ffff80001ffd7860
x29: ffff80001ffd7860 x28: 0000000000000000 x27: dfff800000000000
x26: 1fffe0001a29d611 x25: 00000000fffffff2 x24: ffff80001ffd7940
x23: 0000000000000000 x22: 0000000000000008 x21: 0000000000080000
x20: ffff80001ffd7948 x19: ffff0000d14eb088 x18: 0000000000000001
x17: 0000000000000002 x16: ffff800008683dec x15: 0000000000000036
x14: 0000000000ff0100 x13: ffffffffffffffff x12: 0000000000ff0100
x11: 0000000000000001 x10: 0000000000000002 x9 : ffff0000d14e9b40
x8 : 1ffff00003ffaf28 x7 : 0000000000000000 x6 : 0000000058587025
x5 : ffff80001ffd7965 x4 : ffff800013919d84 x3 : ffff800008587df4
x2 : 0000000000000010 x1 : 0000000000000010 x0 : 0000000000000007
Call trace:
 copy_from_kernel_nofault+0x9c/0x330 mm/maccess.c:37
 bpf_bprintf_prepare+0xc60/0x119c kernel/bpf/helpers.c:885
 ____bpf_snprintf kernel/bpf/helpers.c:1011 [inline]
 bpf_snprintf+0xcc/0x14c kernel/bpf/helpers.c:995
 bpf_prog_1e0cf9d313dd6134+0x7c/0x9b8
 bpf_dispatcher_nop_func include/linux/bpf.h:790 [inline]
 __bpf_prog_run include/linux/filter.h:628 [inline]
 bpf_prog_run include/linux/filter.h:635 [inline]
 bpf_prog_run_pin_on_cpu+0x70/0x1fc include/linux/filter.h:652
 bpf_prog_test_run_syscall+0x308/0x48c net/bpf/test_run.c:1061
 bpf_prog_test_run+0x2e0/0x374 kernel/bpf/syscall.c:3368
 __sys_bpf+0x4ac/0x5f0 kernel/bpf/syscall.c:4669
 __do_sys_bpf kernel/bpf/syscall.c:4755 [inline]
 __se_sys_bpf kernel/bpf/syscall.c:4753 [inline]
 __arm64_sys_bpf+0x80/0x98 kernel/bpf/syscall.c:4753
 __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: aa0803f6 d343ff08 2a1703f9 f94002bc (387b6908) 
---[ end trace 57ed8778aa9e8930 ]---
----------------
Code disassembly (best guess):
   0:	aa0803f6 	mov	x22, x8
   4:	d343ff08 	lsr	x8, x24, #3
   8:	2a1703f9 	mov	w25, w23
   c:	f94002bc 	ldr	x28, [x21]
* 10:	387b6908 	ldrb	w8, [x8, x27] <-- trapping instruction