------------[ cut here ]------------
UBSAN: array-index-out-of-bounds in kernel/bpf/disasm.c:306:6
index 3 is out of range for type 'const char *const[3]'
CPU: 0 UID: 0 PID: 6759 Comm: syz.8.365 Tainted: G             L      syzkaller #0 PREEMPT 
Tainted: [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/14/2026
Call trace:
 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:499 (C)
 __dump_stack+0x30/0x40 lib/dump_stack.c:94
 dump_stack_lvl+0xd8/0x12c lib/dump_stack.c:120
 dump_stack+0x1c/0x28 lib/dump_stack.c:129
 ubsan_epilogue+0x14/0x48 lib/ubsan.c:233
 __ubsan_handle_out_of_bounds+0xd0/0xf8 lib/ubsan.c:455
 print_bpf_insn+0x19c4/0x1ee0 kernel/bpf/disasm.c:306
 format_disasm_line kernel/bpf/diagnostics.c:633 [inline]
 diag_print_insn_context+0x360/0x808 kernel/bpf/diagnostics.c:783
 bpf_diag_source+0x518/0xfd0 kernel/bpf/diagnostics.c:-1
 bpf_diag_program_structure+0x1b0/0x250 kernel/bpf/diagnostics.c:1215
 check_subprogs+0x510/0x5c0 kernel/bpf/verifier.c:3057
 bpf_check+0x19a4/0x243c kernel/bpf/verifier.c:21097
 bpf_prog_load+0xf4c/0x1554 kernel/bpf/syscall.c:3133
 __sys_bpf+0x7d4/0x82c kernel/bpf/syscall.c:6367
 __do_sys_bpf kernel/bpf/syscall.c:6486 [inline]
 __se_sys_bpf kernel/bpf/syscall.c:6483 [inline]
 __arm64_sys_bpf+0xd0/0xec kernel/bpf/syscall.c:6483
 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline]
 invoke_syscall+0x98/0x244 arch/arm64/kernel/syscall.c:49
 el0_svc_common+0xec/0x23c arch/arm64/kernel/syscall.c:121
 do_el0_svc+0x4c/0x5c arch/arm64/kernel/syscall.c:140
 el0_svc+0x64/0x260 arch/arm64/kernel/entry-common.c:758
 el0t_64_sync_handler+0x44/0x104 arch/arm64/kernel/entry-common.c:777
 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:590
---[ end trace ]---
==================================================================
BUG: KASAN: global-out-of-bounds in print_bpf_insn+0x80c/0x1ee0 kernel/bpf/disasm.c:-1
Read of size 8 at addr ffff800086ad37d8 by task syz.8.365/6759

CPU: 0 UID: 0 PID: 6759 Comm: syz.8.365 Tainted: G             L      syzkaller #0 PREEMPT 
Tainted: [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/14/2026
Call trace:
 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:499 (C)
 __dump_stack+0x30/0x40 lib/dump_stack.c:94
 dump_stack_lvl+0xd8/0x12c lib/dump_stack.c:120
 print_address_description+0xb0/0x238 mm/kasan/report.c:378
 print_report+0x68/0x84 mm/kasan/report.c:482
 kasan_report+0x8c/0xc4 mm/kasan/report.c:595
 __asan_report_load8_noabort+0x20/0x2c mm/kasan/report_generic.c:381
 print_bpf_insn+0x80c/0x1ee0 kernel/bpf/disasm.c:-1
 format_disasm_line kernel/bpf/diagnostics.c:633 [inline]
 diag_print_insn_context+0x360/0x808 kernel/bpf/diagnostics.c:783
 bpf_diag_source+0x518/0xfd0 kernel/bpf/diagnostics.c:-1
 bpf_diag_program_structure+0x1b0/0x250 kernel/bpf/diagnostics.c:1215
 check_subprogs+0x510/0x5c0 kernel/bpf/verifier.c:3057
 bpf_check+0x19a4/0x243c kernel/bpf/verifier.c:21097
 bpf_prog_load+0xf4c/0x1554 kernel/bpf/syscall.c:3133
 __sys_bpf+0x7d4/0x82c kernel/bpf/syscall.c:6367
 __do_sys_bpf kernel/bpf/syscall.c:6486 [inline]
 __se_sys_bpf kernel/bpf/syscall.c:6483 [inline]
 __arm64_sys_bpf+0xd0/0xec kernel/bpf/syscall.c:6483
 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline]
 invoke_syscall+0x98/0x244 arch/arm64/kernel/syscall.c:49
 el0_svc_common+0xec/0x23c arch/arm64/kernel/syscall.c:121
 do_el0_svc+0x4c/0x5c arch/arm64/kernel/syscall.c:140
 el0_svc+0x64/0x260 arch/arm64/kernel/entry-common.c:758
 el0t_64_sync_handler+0x44/0x104 arch/arm64/kernel/entry-common.c:777
 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:590

The buggy address belongs to the variable:
 bpf_ldsx_string+0x18/0x60

The buggy address belongs to a 0-page vmalloc region starting at 0xffff8000869d0000 allocated at declare_kernel_vmas+0x54/0xb4 arch/arm64/mm/mmu.c:1434
The buggy address belongs to the physical page:
page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x2190d3
flags: 0x5ffc00000002000(reserved|node=0|zone=2|lastcpupid=0x7ff)
raw: 05ffc00000002000 fffffdffc76434c8 fffffdffc76434c8 0000000000000000
raw: 0000000000000000 0000000000000000 00000001ffffffff 0000000000000000
page dumped because: kasan: bad access detected

Memory state around the buggy address:
 ffff800086ad3680: 00 03 f9 f9 f9 f9 f9 f9 00 01 f9 f9 00 00 00 05
 ffff800086ad3700: f9 f9 f9 f9 00 06 f9 f9 00 04 f9 f9 00 05 f9 f9
>ffff800086ad3780: 00 00 00 06 f9 f9 f9 f9 00 00 00 f9 f9 f9 f9 f9
                                                    ^
 ffff800086ad3800: 00 00 00 00 00 00 00 03 f9 f9 f9 f9 00 00 00 00
 ffff800086ad3880: 01 f9 f9 f9 f9 f9 f9 f9 00 00 f9 f9 00 04 f9 f9
==================================================================