BUG: unable to handle page fault for address: ffffde206136080b #PF: supervisor read access in kernel mode #PF: error_code(0x0000) - not-present page PGD 10002a067 P4D 10002a067 PUD 0 Oops: 0000 [#1] PREEMPT SMP KASAN CPU: 1 PID: 2653 Comm: syz.1.984 Not tainted 6.1.99-syzkaller-00048-g299cc91948f1 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 RIP: 0010:bq_enqueue kernel/bpf/cpumap.c:751 [inline] RIP: 0010:cpu_map_enqueue+0x113/0x370 kernel/bpf/cpumap.c:775 Code: e8 03 42 80 3c 30 00 74 08 48 89 df e8 16 d6 24 00 4c 8b 23 4f 8d 74 3c 58 4d 89 f5 49 c1 ed 03 48 b8 00 00 00 00 00 fc ff df <41> 0f b6 44 05 00 84 c0 0f 85 a8 01 00 00 4d 01 fc 41 8b 1e bf 08 RSP: 0018:ffffc900067d77a8 EFLAGS: 00010a02 RAX: dffffc0000000000 RBX: ffffffff86745888 RCX: 0000000000040000 RDX: ffffc90002583000 RSI: 0000000000000062 RDI: 0000000000000063 RBP: ffffc900067d77e0 R08: ffffffff81980e8e R09: ffffffff84136ac2 R10: 0000000000000004 R11: ffff8881188f8000 R12: ffff8881f6f00000 R13: 1fffe2206136080b R14: ffff110309b04058 R15: ffff888112c04000 FS: 00007fa7622ef6c0(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffde206136080b CR3: 00000001369dd000 CR4: 00000000003506a0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __xdp_do_redirect_frame net/core/filter.c:4291 [inline] xdp_do_redirect+0x5b0/0xc60 net/core/filter.c:4335 tun_xdp_act+0xdb/0xc00 drivers/net/tun.c:1625 tun_build_skb drivers/net/tun.c:1715 [inline] tun_get_user+0xb35/0x3a90 drivers/net/tun.c:1818 tun_chr_write_iter+0x129/0x210 drivers/net/tun.c:2044 call_write_iter include/linux/fs.h:2274 [inline] new_sync_write fs/read_write.c:491 [inline] vfs_write+0xaf6/0xed0 fs/read_write.c:584 ksys_write+0x199/0x2c0 fs/read_write.c:637 __do_sys_write fs/read_write.c:649 [inline] __se_sys_write fs/read_write.c:646 [inline] __x64_sys_write+0x7b/0x90 fs/read_write.c:646 x64_sys_call+0x2f/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:2 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: 0033:0x7fa76157cadf Code: 89 54 24 18 48 89 74 24 10 89 7c 24 08 e8 c9 8d 02 00 48 8b 54 24 18 48 8b 74 24 10 41 89 c0 8b 7c 24 08 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 31 44 89 c7 48 89 44 24 08 e8 1c 8e 02 00 48 RSP: 002b:00007fa7622ef000 EFLAGS: 00000293 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007fa761735f80 RCX: 00007fa76157cadf RDX: 000000000000003e RSI: 0000000020002340 RDI: 00000000000000c8 RBP: 00007fa7615f0296 R08: 0000000000000000 R09: 0000000000000000 R10: 000000000000003e R11: 0000000000000293 R12: 0000000000000000 R13: 0000000000000000 R14: 00007fa761735f80 R15: 00007ffe93a0f678 Modules linked in: CR2: ffffde206136080b ---[ end trace 0000000000000000 ]--- RIP: 0010:bq_enqueue kernel/bpf/cpumap.c:751 [inline] RIP: 0010:cpu_map_enqueue+0x113/0x370 kernel/bpf/cpumap.c:775 Code: e8 03 42 80 3c 30 00 74 08 48 89 df e8 16 d6 24 00 4c 8b 23 4f 8d 74 3c 58 4d 89 f5 49 c1 ed 03 48 b8 00 00 00 00 00 fc ff df <41> 0f b6 44 05 00 84 c0 0f 85 a8 01 00 00 4d 01 fc 41 8b 1e bf 08 RSP: 0018:ffffc900067d77a8 EFLAGS: 00010a02 RAX: dffffc0000000000 RBX: ffffffff86745888 RCX: 0000000000040000 RDX: ffffc90002583000 RSI: 0000000000000062 RDI: 0000000000000063 RBP: ffffc900067d77e0 R08: ffffffff81980e8e R09: ffffffff84136ac2 R10: 0000000000000004 R11: ffff8881188f8000 R12: ffff8881f6f00000 R13: 1fffe2206136080b R14: ffff110309b04058 R15: ffff888112c04000 FS: 00007fa7622ef6c0(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffde206136080b CR3: 00000001369dd000 CR4: 00000000003506a0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: e8 03 42 80 3c call 0x3c804208 5: 30 00 xor %al,(%rax) 7: 74 08 je 0x11 9: 48 89 df mov %rbx,%rdi c: e8 16 d6 24 00 call 0x24d627 11: 4c 8b 23 mov (%rbx),%r12 14: 4f 8d 74 3c 58 lea 0x58(%r12,%r15,1),%r14 19: 4d 89 f5 mov %r14,%r13 1c: 49 c1 ed 03 shr $0x3,%r13 20: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax 27: fc ff df * 2a: 41 0f b6 44 05 00 movzbl 0x0(%r13,%rax,1),%eax <-- trapping instruction 30: 84 c0 test %al,%al 32: 0f 85 a8 01 00 00 jne 0x1e0 38: 4d 01 fc add %r15,%r12 3b: 41 8b 1e mov (%r14),%ebx 3e: bf .byte 0xbf 3f: 08 .byte 0x8