netlink: 20 bytes leftover after parsing attributes in process `syz-executor.4'. Oops: general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] PREEMPT SMP KASAN PTI KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007] CPU: 1 PID: 21628 Comm: syz-executor.4 Not tainted 6.9.0-syzkaller-08544-g4b377b4868ef #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024 RIP: 0010:dev_map_enqueue+0x31/0x3e0 kernel/bpf/devmap.c:539 Code: 41 56 41 55 41 54 53 48 83 ec 18 49 89 d4 49 89 f5 48 89 fd 49 be 00 00 00 00 00 fc ff df e8 66 87 d7 ff 48 89 e8 48 c1 e8 03 <42> 80 3c 30 00 74 08 48 89 ef e8 80 c6 3c 00 4c 8b 7d 00 48 83 c5 RSP: 0018:ffffc90005727678 EFLAGS: 00010246 RAX: 0000000000000000 RBX: 0000000000000004 RCX: 0000000000040000 RDX: ffffc9000ffb4000 RSI: 00000000000008fd RDI: 00000000000008fe RBP: 0000000000000000 R08: ffffffff89631926 R09: ffffffff896318e3 R10: 0000000000000004 R11: ffff8880592e3c00 R12: ffff88805aa5a000 R13: ffff88802cfed070 R14: dffffc0000000000 R15: 0000000000000000 FS: 00007f56dccb66c0(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000000 CR3: 00000000597f0000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: <TASK> __xdp_do_redirect_frame net/core/filter.c:4397 [inline] xdp_do_redirect_frame+0x2a6/0x660 net/core/filter.c:4451 xdp_test_run_batch net/bpf/test_run.c:336 [inline] bpf_test_run_xdp_live+0xe8a/0x1e90 net/bpf/test_run.c:384 bpf_prog_test_run_xdp+0x813/0x11b0 net/bpf/test_run.c:1275 bpf_prog_test_run+0x33a/0x3b0 kernel/bpf/syscall.c:4291 __sys_bpf+0x48d/0x810 kernel/bpf/syscall.c:5705 __do_sys_bpf kernel/bpf/syscall.c:5794 [inline] __se_sys_bpf kernel/bpf/syscall.c:5792 [inline] __x64_sys_bpf+0x7c/0x90 kernel/bpf/syscall.c:5792 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf5/0x240 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f56dbe7cee9 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 00 00 90 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 b0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f56dccb60c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000141 RAX: ffffffffffffffda RBX: 00007f56dbfabf80 RCX: 00007f56dbe7cee9 RDX: 0000000000000050 RSI: 0000000020000240 RDI: 000000000000000a RBP: 00007f56dbec949e R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000000b R14: 00007f56dbfabf80 R15: 00007ffff26df978 </TASK> Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:dev_map_enqueue+0x31/0x3e0 kernel/bpf/devmap.c:539 Code: 41 56 41 55 41 54 53 48 83 ec 18 49 89 d4 49 89 f5 48 89 fd 49 be 00 00 00 00 00 fc ff df e8 66 87 d7 ff 48 89 e8 48 c1 e8 03 <42> 80 3c 30 00 74 08 48 89 ef e8 80 c6 3c 00 4c 8b 7d 00 48 83 c5 RSP: 0018:ffffc90005727678 EFLAGS: 00010246 RAX: 0000000000000000 RBX: 0000000000000004 RCX: 0000000000040000 RDX: ffffc9000ffb4000 RSI: 00000000000008fd RDI: 00000000000008fe RBP: 0000000000000000 R08: ffffffff89631926 R09: ffffffff896318e3 R10: 0000000000000004 R11: ffff8880592e3c00 R12: ffff88805aa5a000 R13: ffff88802cfed070 R14: dffffc0000000000 R15: 0000000000000000 FS: 00007f56dccb66c0(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000000 CR3: 00000000597f0000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: 41 56 push %r14 2: 41 55 push %r13 4: 41 54 push %r12 6: 53 push %rbx 7: 48 83 ec 18 sub $0x18,%rsp b: 49 89 d4 mov %rdx,%r12 e: 49 89 f5 mov %rsi,%r13 11: 48 89 fd mov %rdi,%rbp 14: 49 be 00 00 00 00 00 movabs $0xdffffc0000000000,%r14 1b: fc ff df 1e: e8 66 87 d7 ff call 0xffd78789 23: 48 89 e8 mov %rbp,%rax 26: 48 c1 e8 03 shr $0x3,%rax * 2a: 42 80 3c 30 00 cmpb $0x0,(%rax,%r14,1) <-- trapping instruction 2f: 74 08 je 0x39 31: 48 89 ef mov %rbp,%rdi 34: e8 80 c6 3c 00 call 0x3cc6b9 39: 4c 8b 7d 00 mov 0x0(%rbp),%r15 3d: 48 rex.W 3e: 83 .byte 0x83 3f: c5 .byte 0xc5