BUG: unable to handle page fault for address: ffff8880bfffd000
#PF: supervisor read access in kernel mode
#PF: error_code(0x0000) - not-present page
PGD fc01067 P4D fc01067 PUD 23ffff067 PMD 23fffe067 PTE 0
Oops: 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 14884 Comm: syz-executor.2 Not tainted 5.10.0-rc7-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:do_csum+0x177/0x400 arch/x86/lib/csum-partial_64.c:72
Code: 89 ee 44 89 6c 24 04 89 04 24 e8 74 4f 9c fd 45 85 ed 74 4e 4d 89 e6 e8 17 57 9c fd 41 83 ed 01 31 ff 31 c0 44 89 ee 49 03 1e <49> 13 5e 08 49 13 5e 10 49 13 5e 18 49 13 5e 20 49 13 5e 28 49 13
RSP: 0018:ffffc900023ff618 EFLAGS: 00010a07
RAX: 0000000000000000 RBX: 131bccc46f19580a RCX: ffffc9000cebd000
RDX: 0000000000040000 RSI: 0000000001a32e21 RDI: 0000000000000000
RBP: 00000000ffffffec R08: 0000000000000001 R09: ffff888028cb58e7
R10: 0000000000000000 R11: 0000000000000000 R12: ffff888028cb58b8
R13: 0000000001a32e21 R14: ffff8880bfffcff8 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff8880b9e00000(0063) knlGS:00000000f5569b40
CS:  0010 DS: 002b ES: 002b CR0: 0000000080050033
CR2: ffff8880bfffd000 CR3: 0000000024695000 CR4: 00000000001526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 csum_partial+0x1c/0x30 arch/x86/lib/csum-partial_64.c:136
 lco_csum include/linux/skbuff.h:4579 [inline]
 gre_checksum include/net/gre.h:114 [inline]
 gre_build_header include/net/gre.h:149 [inline]
 __gre_xmit+0x867/0x8f0 net/ipv4/ip_gre.c:462
 ipgre_xmit+0x679/0x830 net/ipv4/ip_gre.c:648
 __netdev_start_xmit include/linux/netdevice.h:4735 [inline]
 netdev_start_xmit include/linux/netdevice.h:4749 [inline]
 xmit_one net/core/dev.c:3564 [inline]
 dev_hard_start_xmit+0x1eb/0x920 net/core/dev.c:3580
 __dev_queue_xmit+0x20b8/0x2da0 net/core/dev.c:4140
 packet_snd net/packet/af_packet.c:2992 [inline]
 packet_sendmsg+0x2413/0x52b0 net/packet/af_packet.c:3017
 sock_sendmsg_nosec net/socket.c:651 [inline]
 sock_sendmsg+0xcf/0x120 net/socket.c:671
 ____sys_sendmsg+0x6e8/0x810 net/socket.c:2353
 ___sys_sendmsg+0xf3/0x170 net/socket.c:2407
 __sys_sendmsg+0xe5/0x1b0 net/socket.c:2440
 do_syscall_32_irqs_on arch/x86/entry/common.c:78 [inline]
 __do_fast_syscall_32+0x56/0x80 arch/x86/entry/common.c:137
 do_fast_syscall_32+0x2f/0x70 arch/x86/entry/common.c:160
 entry_SYSENTER_compat_after_hwframe+0x4d/0x5c
RIP: 0023:0xf7f6f549
Code: b8 01 10 06 03 74 b4 01 10 07 03 74 b0 01 10 08 03 74 d8 01 00 00 00 00 00 00 00 00 00 00 00 00 00 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 eb 0d 90 90 90 90 90 90 90 90 90 90 90 90
RSP: 002b:00000000f55690cc EFLAGS: 00000296 ORIG_RAX: 0000000000000172
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000020000440
RDX: 0000000000000080 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
Modules linked in:
CR2: ffff8880bfffd000
---[ end trace 4c0b28b648ed2b41 ]---
RIP: 0010:do_csum+0x177/0x400 arch/x86/lib/csum-partial_64.c:72
Code: 89 ee 44 89 6c 24 04 89 04 24 e8 74 4f 9c fd 45 85 ed 74 4e 4d 89 e6 e8 17 57 9c fd 41 83 ed 01 31 ff 31 c0 44 89 ee 49 03 1e <49> 13 5e 08 49 13 5e 10 49 13 5e 18 49 13 5e 20 49 13 5e 28 49 13
RSP: 0018:ffffc900023ff618 EFLAGS: 00010a07
RAX: 0000000000000000 RBX: 131bccc46f19580a RCX: ffffc9000cebd000
RDX: 0000000000040000 RSI: 0000000001a32e21 RDI: 0000000000000000
RBP: 00000000ffffffec R08: 0000000000000001 R09: ffff888028cb58e7
R10: 0000000000000000 R11: 0000000000000000 R12: ffff888028cb58b8
R13: 0000000001a32e21 R14: ffff8880bfffcff8 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff8880b9e00000(0063) knlGS:00000000f5569b40
CS:  0010 DS: 002b ES: 002b CR0: 0000000080050033
CR2: ffff8880bfffd000 CR3: 0000000024695000 CR4: 00000000001526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400