BUG: unable to handle kernel paging request at ffff888220000000 PGD be01067 P4D be01067 PUD be04067 PMD 0 Oops: 0000 [#1] PREEMPT SMP KASAN CPU: 0 PID: 24216 Comm: syz-executor4 Not tainted 4.20.0-rc4+ #139 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:do_csum+0x192/0x410 arch/x86/lib/csum-partial_64.c:72 Code: 85 f6 74 54 4d 89 ef e8 4c af a6 f9 41 83 ee 01 31 ff 31 c0 44 89 f6 49 03 1f 49 13 5f 08 49 13 5f 10 49 13 5f 18 49 13 5f 20 <49> 13 5f 28 49 13 5f 30 49 13 5f 38 48 11 c3 e8 2a b0 a6 f9 49 83 RSP: 0018:ffff888177df6568 EFLAGS: 00010296 RAX: 0000000000000000 RBX: fb99e55c0c2a7133 RCX: ffffc9000de9a000 RDX: 0000000000040000 RSI: 0000000001a1d00b RDI: 0000000000000000 RBP: ffff888177df65a0 R08: ffff888183c02300 R09: ffff8881887502d4 R10: 000000000000ffd4 R11: ffffea0007484ff7 R12: 00000000ffff0038 R13: ffff8881887502d8 R14: 0000000001a1d00b R15: ffff88821fffffd8 FS: 00007fecd5955700(0000) GS:ffff8881dae00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffff888220000000 CR3: 000000017aabe000 CR4: 00000000001406f0 DR0: 0000000020000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600 Call Trace: csum_partial+0x21/0x30 arch/x86/lib/csum-partial_64.c:136 gso_make_checksum include/linux/skbuff.h:4100 [inline] tcp_gso_segment+0xa7d/0x17b0 net/ipv4/tcp_offload.c:134 tcp6_gso_segment+0x1c8/0x580 net/ipv6/tcpv6_offload.c:68 ipv6_gso_segment+0x554/0x1130 net/ipv6/ip6_offload.c:100 inet_gso_segment+0x639/0x1350 net/ipv4/af_inet.c:1342 ipv6_gso_segment+0x554/0x1130 net/ipv6/ip6_offload.c:100 skb_mac_gso_segment+0x3b3/0x740 net/core/dev.c:3010 __skb_gso_segment+0x3c3/0x880 net/core/dev.c:3083 skb_gso_segment include/linux/netdevice.h:4307 [inline] validate_xmit_skb+0x640/0xf30 net/core/dev.c:3322 validate_xmit_skb_list+0xd1/0x140 net/core/dev.c:3372 sch_direct_xmit+0x30e/0x1130 net/sched/sch_generic.c:312 qdisc_restart net/sched/sch_generic.c:390 [inline] __qdisc_run+0x636/0x1990 net/sched/sch_generic.c:398 qdisc_run include/net/pkt_sched.h:121 [inline] __dev_xmit_skb net/core/dev.c:3447 [inline] __dev_queue_xmit+0x1915/0x3ad0 net/core/dev.c:3806 cgroup: fork rejected by pids controller in /syz2 dev_queue_xmit+0x17/0x20 net/core/dev.c:3871 packet_snd net/packet/af_packet.c:2928 [inline] packet_sendmsg+0x430a/0x6570 net/packet/af_packet.c:2953 sock_sendmsg_nosec net/socket.c:621 [inline] sock_sendmsg+0xd5/0x120 net/socket.c:631 ___sys_sendmsg+0x7fd/0x930 net/socket.c:2116 __sys_sendmsg+0x11d/0x280 net/socket.c:2154 __do_sys_sendmsg net/socket.c:2163 [inline] __se_sys_sendmsg net/socket.c:2161 [inline] __x64_sys_sendmsg+0x78/0xb0 net/socket.c:2161 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x457569 Code: fd b3 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 cb b3 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007fecd5954c78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000457569 RDX: 0000000000000000 RSI: 0000000020000480 RDI: 0000000000000004 RBP: 000000000072bf00 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007fecd59556d4 R13: 00000000004c3f7d R14: 00000000004d6778 R15: 00000000ffffffff Modules linked in: CR2: ffff888220000000 ---[ end trace 867f4e3185fa9d78 ]--- RIP: 0010:do_csum+0x192/0x410 arch/x86/lib/csum-partial_64.c:72 Code: 85 f6 74 54 4d 89 ef e8 4c af a6 f9 41 83 ee 01 31 ff 31 c0 44 89 f6 49 03 1f 49 13 5f 08 49 13 5f 10 49 13 5f 18 49 13 5f 20 <49> 13 5f 28 49 13 5f 30 49 13 5f 38 48 11 c3 e8 2a b0 a6 f9 49 83 RSP: 0018:ffff888177df6568 EFLAGS: 00010296 RAX: 0000000000000000 RBX: fb99e55c0c2a7133 RCX: ffffc9000de9a000 RDX: 0000000000040000 RSI: 0000000001a1d00b RDI: 0000000000000000 RBP: ffff888177df65a0 R08: ffff888183c02300 R09: ffff8881887502d4 R10: 000000000000ffd4 R11: ffffea0007484ff7 R12: 00000000ffff0038 R13: ffff8881887502d8 R14: 0000000001a1d00b R15: ffff88821fffffd8 FS: 00007fecd5955700(0000) GS:ffff8881dae00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffff888220000000 CR3: 000000017aabe000 CR4: 00000000001406f0 DR0: 0000000020000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600