general protection fault, probably for non-canonical address 0xdffffc0000000001: 0000 [#1] PREEMPT SMP KASAN KASAN: null-ptr-deref in range [0x0000000000000008-0x000000000000000f] CPU: 1 PID: 21433 Comm: syz-executor.4 Not tainted 5.9.0-rc3-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:xsk_diag_put_umem net/xdp/xsk_diag.c:62 [inline] RIP: 0010:xsk_diag_fill net/xdp/xsk_diag.c:129 [inline] RIP: 0010:xsk_diag_dump+0xe27/0x15a0 net/xdp/xsk_diag.c:165 Code: 04 28 84 c0 74 08 3c 03 0f 8e bb 06 00 00 41 8b 44 24 10 89 84 24 fc 00 00 00 48 8b 44 24 40 48 8d 78 08 48 89 f8 48 c1 e8 03 <80> 3c 28 00 0f 85 91 05 00 00 48 8b 44 24 40 48 8b 40 08 48 85 c0 RSP: 0018:ffffc9000882f5a0 EFLAGS: 00010202 RAX: 0000000000000001 RBX: ffff888055706000 RCX: 0000000000000000 RDX: 0000000000040000 RSI: ffffffff87f1af82 RDI: 0000000000000008 RBP: dffffc0000000000 R08: 0000000000000001 R09: ffff888055706033 R10: 0000000000000000 R11: 00000000000ed1c8 R12: ffff888096c55680 R13: ffff88804bd14c18 R14: ffff8880446a2000 R15: 0000000000000000 FS: 00007f061f6e6700(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f733543fdb8 CR3: 0000000090c87000 CR4: 00000000001506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: netlink_dump+0x4cd/0xf60 net/netlink/af_netlink.c:2246 netlink_recvmsg+0xa65/0xee0 net/netlink/af_netlink.c:2002 sock_recvmsg_nosec net/socket.c:885 [inline] sock_recvmsg net/socket.c:903 [inline] sock_recvmsg net/socket.c:899 [inline] ____sys_recvmsg+0x2c4/0x640 net/socket.c:2576 ___sys_recvmsg+0x127/0x200 net/socket.c:2618 do_recvmmsg+0x24d/0x6d0 net/socket.c:2718 __sys_recvmmsg net/socket.c:2797 [inline] __do_sys_recvmmsg net/socket.c:2820 [inline] __se_sys_recvmmsg net/socket.c:2813 [inline] __x64_sys_recvmmsg+0x20b/0x260 net/socket.c:2813 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x45d5b9 Code: 5d b4 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 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 0f 83 2b b4 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f061f6e5c78 EFLAGS: 00000246 ORIG_RAX: 000000000000012b RAX: ffffffffffffffda RBX: 0000000000026b40 RCX: 000000000045d5b9 RDX: 0000000000000001 RSI: 00000000200009c0 RDI: 0000000000000004 RBP: 000000000118cf90 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000118cf4c R13: 00007ffcb71aacbf R14: 00007f061f6e69c0 R15: 000000000118cf4c Modules linked in: ---[ end trace 2bedc37045c2551b ]--- RIP: 0010:xsk_diag_put_umem net/xdp/xsk_diag.c:62 [inline] RIP: 0010:xsk_diag_fill net/xdp/xsk_diag.c:129 [inline] RIP: 0010:xsk_diag_dump+0xe27/0x15a0 net/xdp/xsk_diag.c:165 Code: 04 28 84 c0 74 08 3c 03 0f 8e bb 06 00 00 41 8b 44 24 10 89 84 24 fc 00 00 00 48 8b 44 24 40 48 8d 78 08 48 89 f8 48 c1 e8 03 <80> 3c 28 00 0f 85 91 05 00 00 48 8b 44 24 40 48 8b 40 08 48 85 c0 RSP: 0018:ffffc9000882f5a0 EFLAGS: 00010202 RAX: 0000000000000001 RBX: ffff888055706000 RCX: 0000000000000000 RDX: 0000000000040000 RSI: ffffffff87f1af82 RDI: 0000000000000008 RBP: dffffc0000000000 R08: 0000000000000001 R09: ffff888055706033 R10: 0000000000000000 R11: 00000000000ed1c8 R12: ffff888096c55680 R13: ffff88804bd14c18 R14: ffff8880446a2000 R15: 0000000000000000 FS: 00007f061f6e6700(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000559579369130 CR3: 0000000090c87000 CR4: 00000000001506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400