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: 466 Comm: syz-executor.0 Not tainted 6.1.75-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/29/2024 RIP: 0010:dev_map_enqueue+0x31/0x340 kernel/bpf/devmap.c:528 Code: 56 41 55 41 54 53 48 83 ec 18 48 89 55 c0 49 89 f7 48 89 fb 49 bc 00 00 00 00 00 fc ff df e8 06 79 de ff 48 89 d8 48 c1 e8 03 <42> 80 3c 20 00 74 08 48 89 df e8 00 f2 23 00 4c 8b 33 48 83 c3 20 RSP: 0018:ffffc90002d8f648 EFLAGS: 00010246 RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffff888113993240 RDX: 0000000000000000 RSI: ffff888110726070 RDI: 0000000000000000 RBP: ffffc90002d8f688 R08: 0000000000000005 R09: ffffffff83f50b35 R10: 0000000000000004 R11: ffff888113993240 R12: dffffc0000000000 R13: 0000000000000000 R14: ffff8881f7035fd0 R15: ffff888110726070 FS: 00007fd4e94a66c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fd4e87a80c0 CR3: 0000000110ef7000 CR4: 00000000003506b0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __xdp_do_redirect_frame net/core/filter.c:4268 [inline] xdp_do_redirect_frame+0x285/0x750 net/core/filter.c:4330 xdp_test_run_batch net/bpf/test_run.c:314 [inline] bpf_test_run_xdp_live+0xc30/0x1f70 net/bpf/test_run.c:362 bpf_prog_test_run_xdp+0x7d1/0x1130 net/bpf/test_run.c:1387 bpf_prog_test_run+0x3b0/0x630 kernel/bpf/syscall.c:3664 __sys_bpf+0x3f4/0x6d0 kernel/bpf/syscall.c:5017 __do_sys_bpf kernel/bpf/syscall.c:5103 [inline] __se_sys_bpf kernel/bpf/syscall.c:5101 [inline] __x64_sys_bpf+0x7c/0x90 kernel/bpf/syscall.c:5101 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7fd4e867dda9 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:00007fd4e94a60c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000141 RAX: ffffffffffffffda RBX: 00007fd4e87abf80 RCX: 00007fd4e867dda9 RDX: 0000000000000048 RSI: 0000000020000340 RDI: 000000000000000a RBP: 00007fd4e86ca47a R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000000b R14: 00007fd4e87abf80 R15: 00007ffe90ffdfd8 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:dev_map_enqueue+0x31/0x340 kernel/bpf/devmap.c:528 Code: 56 41 55 41 54 53 48 83 ec 18 48 89 55 c0 49 89 f7 48 89 fb 49 bc 00 00 00 00 00 fc ff df e8 06 79 de ff 48 89 d8 48 c1 e8 03 <42> 80 3c 20 00 74 08 48 89 df e8 00 f2 23 00 4c 8b 33 48 83 c3 20 RSP: 0018:ffffc90002d8f648 EFLAGS: 00010246 RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffff888113993240 RDX: 0000000000000000 RSI: ffff888110726070 RDI: 0000000000000000 RBP: ffffc90002d8f688 R08: 0000000000000005 R09: ffffffff83f50b35 R10: 0000000000000004 R11: ffff888113993240 R12: dffffc0000000000 R13: 0000000000000000 R14: ffff8881f7035fd0 R15: ffff888110726070 FS: 00007fd4e94a66c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fd4e87a80c0 CR3: 0000000110ef7000 CR4: 00000000003506b0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: 56 push %rsi 1: 41 55 push %r13 3: 41 54 push %r12 5: 53 push %rbx 6: 48 83 ec 18 sub $0x18,%rsp a: 48 89 55 c0 mov %rdx,-0x40(%rbp) e: 49 89 f7 mov %rsi,%r15 11: 48 89 fb mov %rdi,%rbx 14: 49 bc 00 00 00 00 00 movabs $0xdffffc0000000000,%r12 1b: fc ff df 1e: e8 06 79 de ff call 0xffde7929 23: 48 89 d8 mov %rbx,%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 df mov %rbx,%rdi 34: e8 00 f2 23 00 call 0x23f239 39: 4c 8b 33 mov (%rbx),%r14 3c: 48 83 c3 20 add $0x20,%rbx