BUG: unable to handle page fault for address: ffff8880bfffd000
#PF: supervisor read access in kernel mode
#PF: error_code(0x0000) - not-present page
PGD 10201067 P4D 10201067 PUD 23ffff067 PMD 23fffe067 PTE 0
Oops: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 26712 Comm: syz-executor.3 Not tainted 5.11.0-rc4-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:do_csum arch/x86/lib/csum-partial_64.c:72 [inline]
RIP: 0010:csum_partial+0x184/0x470 arch/x86/lib/csum-partial_64.c:136
Code: 84 7c 00 00 00 41 ff ce 4c 89 f0 48 c1 e0 06 48 89 44 24 28 45 31 ff 48 8b 6c 24 08 66 2e 0f 1f 84 00 00 00 00 00 4c 03 6d 00 <4c> 13 6d 08 4c 13 6d 10 4c 13 6d 18 4c 13 6d 20 4c 13 6d 28 4c 13
RSP: 0018:ffffc900029f7498 EFLAGS: 00010296
RAX: ffffffff83ed33c1 RBX: 000000001ffffffd RCX: 0000000000040000
RDX: ffffc9000ae7d000 RSI: 000000000003ffff RDI: 0000000000040000
RBP: ffff8880bfffcff8 R08: ffffffff83ed3361 R09: 0000000000000000
R10: ffffed1003134260 R11: 0000000000000000 R12: 00000000ffffffec
R13: c66a1642b67bda17 R14: 0000000001626901 R15: 0000000000000000
FS:  00007f2a09ab8700(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffff8880bfffd000 CR3: 00000000130fc000 CR4: 00000000001526e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 lco_csum include/linux/skbuff.h:4585 [inline]
 gre_checksum include/net/gre.h:114 [inline]
 gre_build_header+0x492/0x7c0 include/net/gre.h:149
 __gre_xmit net/ipv4/ip_gre.c:462 [inline]
 ipgre_xmit+0x6ab/0x9e0 net/ipv4/ip_gre.c:648
 __netdev_start_xmit include/linux/netdevice.h:4776 [inline]
 netdev_start_xmit include/linux/netdevice.h:4790 [inline]
 xmit_one net/core/dev.c:3574 [inline]
 dev_hard_start_xmit+0x20b/0x450 net/core/dev.c:3590
 __dev_queue_xmit+0x1708/0x2a10 net/core/dev.c:4151
 packet_snd net/packet/af_packet.c:3006 [inline]
 packet_sendmsg+0x4cd8/0x6650 net/packet/af_packet.c:3031
 sock_sendmsg_nosec net/socket.c:652 [inline]
 sock_sendmsg net/socket.c:672 [inline]
 kernel_sendmsg+0xf5/0x130 net/socket.c:692
 sock_no_sendpage+0xe0/0x120 net/core/sock.c:2846
 kernel_sendpage+0x2ca/0x370 net/socket.c:3636
 sock_sendpage+0x7e/0xb0 net/socket.c:945
 pipe_to_sendpage+0x208/0x2d0 fs/splice.c:364
 splice_from_pipe_feed fs/splice.c:418 [inline]
 __splice_from_pipe+0x351/0x8b0 fs/splice.c:562
 splice_from_pipe fs/splice.c:597 [inline]
 generic_splice_sendpage+0x112/0x180 fs/splice.c:743
 do_splice_from fs/splice.c:764 [inline]
 do_splice+0x136d/0x1ab0 fs/splice.c:1059
 __do_splice fs/splice.c:1137 [inline]
 __do_sys_splice fs/splice.c:1343 [inline]
 __se_sys_splice+0x2a6/0x390 fs/splice.c:1325
 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x45e219
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:00007f2a09ab7c68 EFLAGS: 00000246 ORIG_RAX: 0000000000000113
RAX: ffffffffffffffda RBX: 0000000000000006 RCX: 000000000045e219
RDX: 0000000000000005 RSI: 0000000000000000 RDI: 0000000000000003
RBP: 000000000119c080 R08: 00000000ffffffff R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000119c034
R13: 00007ffd191b8e5f R14: 00007f2a09ab89c0 R15: 000000000119c034
Modules linked in:
CR2: ffff8880bfffd000
---[ end trace 6b375423845aea8d ]---
RIP: 0010:do_csum arch/x86/lib/csum-partial_64.c:72 [inline]
RIP: 0010:csum_partial+0x184/0x470 arch/x86/lib/csum-partial_64.c:136
Code: 84 7c 00 00 00 41 ff ce 4c 89 f0 48 c1 e0 06 48 89 44 24 28 45 31 ff 48 8b 6c 24 08 66 2e 0f 1f 84 00 00 00 00 00 4c 03 6d 00 <4c> 13 6d 08 4c 13 6d 10 4c 13 6d 18 4c 13 6d 20 4c 13 6d 28 4c 13
RSP: 0018:ffffc900029f7498 EFLAGS: 00010296
RAX: ffffffff83ed33c1 RBX: 000000001ffffffd RCX: 0000000000040000
RDX: ffffc9000ae7d000 RSI: 000000000003ffff RDI: 0000000000040000
RBP: ffff8880bfffcff8 R08: ffffffff83ed3361 R09: 0000000000000000
R10: ffffed1003134260 R11: 0000000000000000 R12: 00000000ffffffec
R13: c66a1642b67bda17 R14: 0000000001626901 R15: 0000000000000000
FS:  00007f2a09ab8700(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffff8880bfffd000 CR3: 00000000130fc000 CR4: 00000000001526e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400