BUG: unable to handle page fault for address: fffffffffffffff0 #PF: supervisor read access in kernel mode #PF: error_code(0x0000) - not-present page PGD a291067 P4D a291067 PUD a293067 PMD 0 Oops: 0000 [#1] PREEMPT SMP KASAN CPU: 0 PID: 12646 Comm: syz-executor.5 Not tainted 5.9.0-rc7-next-20201002-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:tcf_action_dump_terse+0x8c/0x4e0 net/sched/act_api.c:759 Code: 3c 03 0f 8e 0a 03 00 00 48 89 da 44 8b ad b8 00 00 00 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 80 3c 02 00 0f 85 10 04 00 00 <48> 8b 03 4c 8d 60 10 4c 89 e7 e8 55 5b 58 fd 4c 89 e1 be 01 00 00 RSP: 0018:ffffc900056c7178 EFLAGS: 00010246 RAX: dffffc0000000000 RBX: fffffffffffffff0 RCX: ffffc90012f76000 RDX: 1ffffffffffffffe RSI: ffffffff867eb859 RDI: ffff88809ea39478 RBP: ffff88809ea393c0 R08: 0000000000000000 R09: ffff8880a25e0024 R10: 0000000000000000 R11: 0000000000000000 R12: fffffffffffffff0 R13: 0000000000000024 R14: ffff8880a25e0000 R15: ffff88809ea39480 FS: 00007f8920993700(0000) GS:ffff8880ae400000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: fffffffffffffff0 CR3: 0000000099049000 CR4: 00000000001506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: tcf_action_dump_1+0xd2/0x5a0 net/sched/act_api.c:788 tcf_dump_walker net/sched/act_api.c:249 [inline] tcf_generic_walker+0x207/0xba0 net/sched/act_api.c:343 tc_dump_action+0x6d5/0xe60 net/sched/act_api.c:1610 netlink_dump+0x4df/0xba0 net/netlink/af_netlink.c:2268 __netlink_dump_start+0x643/0x900 net/netlink/af_netlink.c:2373 netlink_dump_start include/linux/netlink.h:246 [inline] rtnetlink_rcv_msg+0x70f/0xad0 net/core/rtnetlink.c:5526 netlink_rcv_skb+0x15a/0x430 net/netlink/af_netlink.c:2489 netlink_unicast_kernel net/netlink/af_netlink.c:1304 [inline] netlink_unicast+0x533/0x7d0 net/netlink/af_netlink.c:1330 netlink_sendmsg+0x856/0xd90 net/netlink/af_netlink.c:1919 sock_sendmsg_nosec net/socket.c:651 [inline] sock_sendmsg+0xcf/0x120 net/socket.c:671 ____sys_sendmsg+0x331/0x810 net/socket.c:2362 ___sys_sendmsg+0xf3/0x170 net/socket.c:2416 __sys_sendmmsg+0x196/0x4b0 net/socket.c:2506 __do_sys_sendmmsg net/socket.c:2535 [inline] __se_sys_sendmmsg net/socket.c:2532 [inline] __x64_sys_sendmmsg+0x99/0x100 net/socket.c:2532 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x45de89 Code: 0d 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 db b3 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f8920992c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000133 RAX: ffffffffffffffda RBX: 0000000000027f00 RCX: 000000000045de89 RDX: 040000000000009f RSI: 00000000200002c0 RDI: 0000000000000003 RBP: 000000000118bf68 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000118bf2c R13: 00007ffdc1d5d52f R14: 00007f89209939c0 R15: 000000000118bf2c Modules linked in: CR2: fffffffffffffff0 ---[ end trace 2a9b03292dc6d0ca ]--- RIP: 0010:tcf_action_dump_terse+0x8c/0x4e0 net/sched/act_api.c:759 Code: 3c 03 0f 8e 0a 03 00 00 48 89 da 44 8b ad b8 00 00 00 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 80 3c 02 00 0f 85 10 04 00 00 <48> 8b 03 4c 8d 60 10 4c 89 e7 e8 55 5b 58 fd 4c 89 e1 be 01 00 00 RSP: 0018:ffffc900056c7178 EFLAGS: 00010246 RAX: dffffc0000000000 RBX: fffffffffffffff0 RCX: ffffc90012f76000 RDX: 1ffffffffffffffe RSI: ffffffff867eb859 RDI: ffff88809ea39478 RBP: ffff88809ea393c0 R08: 0000000000000000 R09: ffff8880a25e0024 R10: 0000000000000000 R11: 0000000000000000 R12: fffffffffffffff0 R13: 0000000000000024 R14: ffff8880a25e0000 R15: ffff88809ea39480 FS: 00007f8920993700(0000) GS:ffff8880ae400000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: fffffffffffffff0 CR3: 0000000099049000 CR4: 00000000001506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400