general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] PREEMPT SMP KASAN KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007] CPU: 1 PID: 8734 Comm: syz.4.1367 Not tainted 6.1.129-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025 RIP: 0010:dev_map_enqueue+0x2d/0x340 kernel/bpf/devmap.c:532 Code: 41 56 41 55 41 54 53 48 83 ec 10 49 89 d5 49 89 f7 48 89 fd 49 bc 00 00 00 00 00 fc ff df e8 3a 91 df ff 48 89 e8 48 c1 e8 03 <42> 80 3c 20 00 74 08 48 89 ef e8 64 e9 36 00 4c 8b 75 00 48 83 c5 RSP: 0018:ffffc900032e76c0 EFLAGS: 00010246 RAX: 0000000000000000 RBX: 0000000000020000 RCX: 0000000000080000 RDX: ffffc9000e062000 RSI: 00000000000006b5 RDI: 00000000000006b6 RBP: 0000000000000000 R08: ffffffff88af2b08 R09: ffffffff88af2a1b R10: 0000000000000004 R11: ffff888027171dc0 R12: dffffc0000000000 R13: ffff888074e1c000 R14: ffff8880b8f39258 R15: ffff888053335070 FS: 00007fede530c6c0(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f0044b15ff8 CR3: 000000007ad9b000 CR4: 00000000003506e0 DR0: 0000400000000300 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600 Call Trace: <TASK> __xdp_do_redirect_frame net/core/filter.c:4320 [inline] xdp_do_redirect_frame+0x328/0x660 net/core/filter.c:4382 xdp_test_run_batch net/bpf/test_run.c:314 [inline] bpf_test_run_xdp_live+0xbf4/0x1ea0 net/bpf/test_run.c:362 bpf_prog_test_run_xdp+0x7d1/0x1130 net/bpf/test_run.c:1393 bpf_prog_test_run+0x32f/0x3a0 kernel/bpf/syscall.c:3690 __sys_bpf+0x3eb/0x6c0 kernel/bpf/syscall.c:5043 __do_sys_bpf kernel/bpf/syscall.c:5129 [inline] __se_sys_bpf kernel/bpf/syscall.c:5127 [inline] __x64_sys_bpf+0x78/0x90 kernel/bpf/syscall.c:5127 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x68/0xd2 RIP: 0033:0x7fede458d169 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fede530c038 EFLAGS: 00000246 ORIG_RAX: 0000000000000141 RAX: ffffffffffffffda RBX: 00007fede47a5fa0 RCX: 00007fede458d169 RDX: 0000000000000050 RSI: 00004000000000c0 RDI: 000000000000000a RBP: 00007fede460e2a0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007fede47a5fa0 R15: 00007ffd41368738 </TASK> Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:dev_map_enqueue+0x2d/0x340 kernel/bpf/devmap.c:532 Code: 41 56 41 55 41 54 53 48 83 ec 10 49 89 d5 49 89 f7 48 89 fd 49 bc 00 00 00 00 00 fc ff df e8 3a 91 df ff 48 89 e8 48 c1 e8 03 <42> 80 3c 20 00 74 08 48 89 ef e8 64 e9 36 00 4c 8b 75 00 48 83 c5 RSP: 0018:ffffc900032e76c0 EFLAGS: 00010246 RAX: 0000000000000000 RBX: 0000000000020000 RCX: 0000000000080000 RDX: ffffc9000e062000 RSI: 00000000000006b5 RDI: 00000000000006b6 RBP: 0000000000000000 R08: ffffffff88af2b08 R09: ffffffff88af2a1b R10: 0000000000000004 R11: ffff888027171dc0 R12: dffffc0000000000 R13: ffff888074e1c000 R14: ffff8880b8f39258 R15: ffff888053335070 FS: 00007fede530c6c0(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f0044b15ff8 CR3: 000000007ad9b000 CR4: 00000000003506e0 DR0: 0000400000000300 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600 ---------------- 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 10 sub $0x10,%rsp b: 49 89 d5 mov %rdx,%r13 e: 49 89 f7 mov %rsi,%r15 11: 48 89 fd mov %rdi,%rbp 14: 49 bc 00 00 00 00 00 movabs $0xdffffc0000000000,%r12 1b: fc ff df 1e: e8 3a 91 df ff call 0xffdf915d 23: 48 89 e8 mov %rbp,%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: 48 89 ef mov %rbp,%rdi 34: e8 64 e9 36 00 call 0x36e99d 39: 4c 8b 75 00 mov 0x0(%rbp),%r14 3d: 48 rex.W 3e: 83 .byte 0x83 3f: c5 .byte 0xc5