RBP: 0000000000000002 R08: 0000000000000000 R09: 0000000000000009 R10: 0000000000000000 R11: 0000000000000246 R12: 00002000000000c0 R13: 0000000000000000 R14: 00007f218daecc00 R15: 0000000000000002 general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] PREEMPT SMP KASAN KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007] CPU: 0 PID: 299 Comm: syz-executor183 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/16/2026 RIP: 0010:btf_type_by_id+0x80/0xc0 kernel/bpf/btf.c:672 Code: 83 c3 08 48 89 d8 48 c1 e8 03 42 80 3c 20 00 74 08 48 89 df e8 71 77 22 00 45 89 f6 49 c1 e6 03 4c 03 33 4c 89 f0 48 c1 e8 03 <42> 80 3c 20 00 74 08 4c 89 f7 e8 51 77 22 00 49 8b 06 5b 41 5c 41 RSP: 0018:ffffc90000b27c30 EFLAGS: 00010246 RAX: 0000000000000000 RBX: ffff8881087a2f08 RCX: ffff88810ab5bc00 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffffc90000b27c50 R08: ffff8881087a2f57 R09: 1ffff110210f45ea R10: dffffc0000000000 R11: ffffed10210f45eb R12: dffffc0000000000 R13: 1ffff92000164f94 R14: 0000000000000000 R15: 0000000000000000 FS: 0000555576d843c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00002000000000c0 CR3: 000000011f577000 CR4: 00000000003506b0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: map_check_btf+0x14c/0x580 kernel/bpf/syscall.c:775 map_create+0x14f7/0x1f50 kernel/bpf/syscall.c:874 __do_sys_bpf kernel/bpf/syscall.c:4417 [inline] __se_sys_bpf+0x24b/0x740 kernel/bpf/syscall.c:4391 __x64_sys_bpf+0x7b/0x90 kernel/bpf/syscall.c:4391 do_syscall_64+0x31/0x40 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x61/0xcb RIP: 0033:0x7f218da60a49 Code: c0 79 93 eb d5 48 8d 7c 1d 00 eb 99 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 d8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ffd8eb49c58 EFLAGS: 00000246 ORIG_RAX: 0000000000000141 RAX: ffffffffffffffda RBX: 00007ffd8eb49c70 RCX: 00007f218da60a49 RDX: 0000000000000048 RSI: 0000200000000800 RDI: 0000000000000000 RBP: 0000000000000002 R08: 0000000000000000 R09: 0000000000000009 R10: 0000000000000000 R11: 0000000000000246 R12: 00002000000000c0 R13: 0000000000000000 R14: 00007f218daecc00 R15: 0000000000000002 Modules linked in: ---[ end trace c733aab45763f5b4 ]--- RIP: 0010:btf_type_by_id+0x80/0xc0 kernel/bpf/btf.c:672 Code: 83 c3 08 48 89 d8 48 c1 e8 03 42 80 3c 20 00 74 08 48 89 df e8 71 77 22 00 45 89 f6 49 c1 e6 03 4c 03 33 4c 89 f0 48 c1 e8 03 <42> 80 3c 20 00 74 08 4c 89 f7 e8 51 77 22 00 49 8b 06 5b 41 5c 41 RSP: 0018:ffffc90000b27c30 EFLAGS: 00010246 RAX: 0000000000000000 RBX: ffff8881087a2f08 RCX: ffff88810ab5bc00 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffffc90000b27c50 R08: ffff8881087a2f57 R09: 1ffff110210f45ea R10: dffffc0000000000 R11: ffffed10210f45eb R12: dffffc0000000000 R13: 1ffff92000164f94 R14: 0000000000000000 R15: 0000000000000000 FS: 0000555576d843c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f218dac105c CR3: 000000011f577000 CR4: 00000000003506a0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: 83 c3 08 add $0x8,%ebx 3: 48 89 d8 mov %rbx,%rax 6: 48 c1 e8 03 shr $0x3,%rax a: 42 80 3c 20 00 cmpb $0x0,(%rax,%r12,1) f: 74 08 je 0x19 11: 48 89 df mov %rbx,%rdi 14: e8 71 77 22 00 call 0x22778a 19: 45 89 f6 mov %r14d,%r14d 1c: 49 c1 e6 03 shl $0x3,%r14 20: 4c 03 33 add (%rbx),%r14 23: 4c 89 f0 mov %r14,%rax 26: 48 c1 e8 03 shr $0x3,%rax * 2a: 42 80 3c 20 00 cmpb $0x0,(%rax,%r12,1) <-- trapping instruction 2f: 74 08 je 0x39 31: 4c 89 f7 mov %r14,%rdi 34: e8 51 77 22 00 call 0x22778a 39: 49 8b 06 mov (%r14),%rax 3c: 5b pop %rbx 3d: 41 5c pop %r12 3f: 41 rex.B