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: 3599 Comm: syz-executor162 Not tainted 5.16.0-syzkaller-11587-gdd5152ab338c #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:btf_type_vlen include/linux/btf.h:258 [inline] RIP: 0010:btf_decl_tag_resolve+0x85f/0xac0 kernel/bpf/btf.c:3948 Code: c1 ea 03 80 3c 02 00 0f 85 90 01 00 00 48 8b 1b e8 36 b3 e6 ff 48 8d 7b 04 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <0f> b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 2b RSP: 0018:ffffc90001a9fa00 EFLAGS: 00010247 RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff8191a26a RDI: 0000000000000004 RBP: ffff888012ba9000 R08: 0000000000000008 R09: 0000000000000008 R10: ffffffff8191a212 R11: 0000000000000001 R12: 0000000000000004 R13: 0000000000000008 R14: 0000000000000000 R15: 0000000000000005 FS: 0000555555e58300(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020000000 CR3: 0000000070d4a000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: btf_resolve+0x251/0x1050 kernel/bpf/btf.c:4236 btf_check_all_types kernel/bpf/btf.c:4277 [inline] btf_parse_type_sec kernel/bpf/btf.c:4318 [inline] btf_parse kernel/bpf/btf.c:4551 [inline] btf_new_fd+0x1a4a/0x23d0 kernel/bpf/btf.c:6177 bpf_btf_load kernel/bpf/syscall.c:4045 [inline] __sys_bpf+0x1faa/0x59a0 kernel/bpf/syscall.c:4685 __do_sys_bpf kernel/bpf/syscall.c:4744 [inline] __se_sys_bpf kernel/bpf/syscall.c:4742 [inline] __x64_sys_bpf+0x75/0xb0 kernel/bpf/syscall.c:4742 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x7f491d125099 Code: 28 c3 e8 2a 14 00 00 66 2e 0f 1f 84 00 00 00 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 c0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ffd472bd838 EFLAGS: 00000246 ORIG_RAX: 0000000000000141 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f491d125099 RDX: 0000000000000020 RSI: 0000000020000000 RDI: 0000000000000012 RBP: 00007f491d0e9080 R08: 0000000000000000 R09: 0000000000000000 R10: 00000000ffffffff R11: 0000000000000246 R12: 00007f491d0e9110 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:btf_type_vlen include/linux/btf.h:258 [inline] RIP: 0010:btf_decl_tag_resolve+0x85f/0xac0 kernel/bpf/btf.c:3948 Code: c1 ea 03 80 3c 02 00 0f 85 90 01 00 00 48 8b 1b e8 36 b3 e6 ff 48 8d 7b 04 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <0f> b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 2b RSP: 0018:ffffc90001a9fa00 EFLAGS: 00010247 RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff8191a26a RDI: 0000000000000004 RBP: ffff888012ba9000 R08: 0000000000000008 R09: 0000000000000008 R10: ffffffff8191a212 R11: 0000000000000001 R12: 0000000000000004 R13: 0000000000000008 R14: 0000000000000000 R15: 0000000000000005 FS: 0000555555e58300(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f78beff3df0 CR3: 0000000070d4a000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: c1 ea 03 shr $0x3,%edx 3: 80 3c 02 00 cmpb $0x0,(%rdx,%rax,1) 7: 0f 85 90 01 00 00 jne 0x19d d: 48 8b 1b mov (%rbx),%rbx 10: e8 36 b3 e6 ff callq 0xffe6b34b 15: 48 8d 7b 04 lea 0x4(%rbx),%rdi 19: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax 20: fc ff df 23: 48 89 fa mov %rdi,%rdx 26: 48 c1 ea 03 shr $0x3,%rdx * 2a: 0f b6 14 02 movzbl (%rdx,%rax,1),%edx <-- trapping instruction 2e: 48 89 f8 mov %rdi,%rax 31: 83 e0 07 and $0x7,%eax 34: 83 c0 03 add $0x3,%eax 37: 38 d0 cmp %dl,%al 39: 7c 08 jl 0x43 3b: 84 d2 test %dl,%dl 3d: 0f .byte 0xf 3e: 85 2b test %ebp,(%rbx)