BUG: unable to handle page fault for address: ffff8880bfffd000
#PF: supervisor read access in kernel mode
#PF: error_code(0x0000) - not-present page
PGD 10c01067 P4D 10c01067 PUD 23ffff067 PMD 23fffe067 PTE 0
Oops: 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 10244 Comm: syz-executor.0 Not tainted 5.14.0-rc3-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:ffffc9000ac1f030 EFLAGS: 00010202
RAX: ffffffff842f9871 RBX: 000000001ffffffd RCX: ffff888033f9b880
RDX: 0000000000000000 RSI: 0000000003ffffff RDI: 0000000000000000
RBP: ffff8880bfffcff8 R08: ffffffff842f9811 R09: 0000000000000000
R10: ffffed1008f8a160 R11: 0000000000000000 R12: 00000000ffffffec
R13: 40fb4bf2dea0d2c7 R14: 00000000021f14e1 R15: 0000000000000000
FS:  00007f9c02ce4700(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffff8880bfffd000 CR3: 0000000023cc0000 CR4: 00000000001506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 lco_csum include/linux/skbuff.h:4662 [inline]
 gre_build_header+0x49d/0x880 include/net/gre.h:139
 __gre_xmit net/ipv4/ip_gre.c:467 [inline]
 ipgre_xmit+0x6ab/0x9e0 net/ipv4/ip_gre.c:653
 __netdev_start_xmit include/linux/netdevice.h:4944 [inline]
 netdev_start_xmit include/linux/netdevice.h:4958 [inline]
 xmit_one net/core/dev.c:3659 [inline]
 dev_hard_start_xmit+0x20b/0x450 net/core/dev.c:3675
 __dev_queue_xmit+0x1bd9/0x34b0 net/core/dev.c:4285
 packet_snd net/packet/af_packet.c:3016 [inline]
 packet_sendmsg+0x4cb9/0x6730 net/packet/af_packet.c:3044
 sock_sendmsg_nosec net/socket.c:703 [inline]
 sock_sendmsg net/socket.c:723 [inline]
 kernel_sendmsg+0xf5/0x130 net/socket.c:743
 sock_no_sendpage+0x150/0x1b0 net/core/sock.c:2959
 kernel_sendpage+0x2ca/0x370 net/socket.c:3673
 sock_sendpage+0x7e/0xb0 net/socket.c:1002
 pipe_to_sendpage+0x258/0x340 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+0x172/0x200 fs/splice.c:746
 do_splice_from fs/splice.c:767 [inline]
 do_splice+0xe8e/0x17e0 fs/splice.c:1079
 __do_splice fs/splice.c:1144 [inline]
 __do_sys_splice fs/splice.c:1350 [inline]
 __se_sys_splice+0x32c/0x430 fs/splice.c:1332
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x4665d9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f9c02ce4188 EFLAGS: 00000246 ORIG_RAX: 0000000000000113
RAX: ffffffffffffffda RBX: 000000000056c038 RCX: 00000000004665d9
RDX: 0000000000000006 RSI: 0000000000000000 RDI: 0000000000000004
RBP: 00000000004bfcb9 R08: 00000000ffffffff R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056c038
R13: 00007ffe138ef17f R14: 00007f9c02ce4300 R15: 0000000000022000
Modules linked in:
CR2: ffff8880bfffd000
---[ end trace 753a0b099b42ecb6 ]---
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:ffffc9000ac1f030 EFLAGS: 00010202
RAX: ffffffff842f9871 RBX: 000000001ffffffd RCX: ffff888033f9b880
RDX: 0000000000000000 RSI: 0000000003ffffff RDI: 0000000000000000
RBP: ffff8880bfffcff8 R08: ffffffff842f9811 R09: 0000000000000000
R10: ffffed1008f8a160 R11: 0000000000000000 R12: 00000000ffffffec
R13: 40fb4bf2dea0d2c7 R14: 00000000021f14e1 R15: 0000000000000000
FS:  00007f9c02ce4700(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffff8880bfffd000 CR3: 0000000023cc0000 CR4: 00000000001506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400