syzbot


BUG: unable to handle kernel NULL pointer dereference in do_syscall_64

Status: auto-closed as invalid on 2019/02/22 10:29
Subsystems: net
[Documentation on labels]
Reported-by: syzbot+840f6a162309f678ef5c@syzkaller.appspotmail.com
First crash: 2143d, last: 2143d
Similar bugs (6)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-4.19 BUG: unable to handle kernel NULL pointer dereference in do_syscall_64 (2) C done 4 1366d 1379d 1/1 fixed on 2020/09/03 09:58
linux-4.19 BUG: unable to handle kernel NULL pointer dereference in do_syscall_64 (3) 2 1327d 1332d 0/1 auto-closed as invalid on 2021/01/09 06:14
upstream BUG: unable to handle kernel NULL pointer dereference in do_syscall_64 (2) kernel C done 9 1412d 1516d 0/26 closed as dup on 2020/08/15 13:48
linux-4.14 BUG: unable to handle kernel NULL pointer dereference in do_syscall_64 1 1643d 1643d 0/1 auto-closed as invalid on 2020/02/28 23:04
linux-4.14 BUG: unable to handle kernel NULL pointer dereference in do_syscall_64 (2) 7 1441d 1479d 0/1 auto-closed as invalid on 2020/09/17 05:58
linux-4.19 BUG: unable to handle kernel NULL pointer dereference in do_syscall_64 3 1507d 1522d 0/1 auto-closed as invalid on 2020/07/13 07:25

Sample crash report:
 xfrm_lookup+0x3b1/0x2860 net/xfrm/xfrm_policy.c:2162
BUG: unable to handle kernel NULL pointer dereference
 at 0000000000000000
PGD 1afea5067 
P4D 1afea5067 
PUD 190a2a067 
PMD 0 
 xfrm_lookup_route+0x39/0x1f0 net/xfrm/xfrm_policy.c:2282
Oops: 0010 [#1] SMP KASAN
 ip_route_output_flow+0xb1/0xc0 net/ipv4/route.c:2588
CPU: 1 PID: 11381 Comm: syz-executor1 Not tainted 4.17.0+ #84
 ip_route_connect include/net/route.h:310 [inline]
 __ip4_datagram_connect+0x6e9/0xff0 net/ipv4/datagram.c:51
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
 __ip6_datagram_connect+0xd28/0x1470 net/ipv6/datagram.c:191
RIP: 0010:          (null)
Code: 
Bad RIP value.
RSP: 0018:ffff88018ff47590 EFLAGS: 00010246
 ip6_datagram_connect+0x2f/0x50 net/ipv6/datagram.c:273
RAX: 0000000000000000 RBX: ffff8801a8a00800 RCX: 1ffffffff10ea9fd
RDX: ffff88018ff47ab0 RSI: ffff8801b5ad0940 RDI: ffff8801b10af540
 ip6_datagram_connect_v6_only+0x6a/0x90 net/ipv6/datagram.c:285
RBP: ffff88018ff47700 R08: 0000000000000001 R09: 0000000000000000
 inet_dgram_connect+0x154/0x2e0 net/ipv4/af_inet.c:571
R10: 0000000000000000 R11: 0000000000000000 R12: 1ffff10031fe8eb7
 __sys_connect+0x37d/0x4c0 net/socket.c:1709
R13: ffff88018ff47ab0 R14: ffff8801a8a00812 R15: ffff8801a8a00c58
FS:  00007f3179739700(0000) GS:ffff8801daf00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffffffffffffd6 CR3: 00000001b31d9000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
 __do_sys_connect net/socket.c:1720 [inline]
 __se_sys_connect net/socket.c:1717 [inline]
 __x64_sys_connect+0x73/0xb0 net/socket.c:1717
Call Trace:
 do_syscall_64+0x1b1/0x800 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x455b29
 sock_poll+0x1d1/0x710 net/socket.c:1168
Code: 
1d 
ba fb 
ff 
 vfs_poll+0x77/0x2a0 fs/select.c:40
c3 
 do_pollfd fs/select.c:848 [inline]
 do_poll fs/select.c:896 [inline]
 do_sys_poll+0x6fd/0x1100 fs/select.c:990
66 
2e 
0f 
1f 
84 
00 
00 
00 
00 
00 
66 
90 
48 
89 
f8 
48 
89 
f7 
48 
89 
d6 48 
89 
 __do_sys_poll fs/select.c:1048 [inline]
 __se_sys_poll fs/select.c:1036 [inline]
 __x64_sys_poll+0x189/0x510 fs/select.c:1036
ca 
4d 
89 
 do_syscall_64+0x1b1/0x800 arch/x86/entry/common.c:290
c2 
4d 
89 
c8 
4c 
8b 
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
4c 
RIP: 0033:0x455b29
24 
Code: 
08 
1d 
0f 
ba 
05 
fb 
<48> 
ff 
3d 
c3 
01 
66 
f0 
2e 
ff 
0f 
ff 
1f 
0f 
84 
83 
00 
eb 
00 
b9 
00 
fb ff 
00 
c3 
00 
66 
66 90 
2e 
48 
0f 1f 
89 
84 
f8 
00 
48 
00 
89 
00 
f7 
00 
48 
89 
RSP: 002b:00007fe321d11c68 EFLAGS: 00000246
d6 
 ORIG_RAX: 000000000000002a
48 
RAX: ffffffffffffffda RBX: 00007fe321d126d4 RCX: 0000000000455b29
RDX: 000000000000001c RSI: 00000000200000c0 RDI: 0000000000000013
89 
RBP: 000000000072bea0 R08: 0000000000000000 R09: 0000000000000000
ca 
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000016
4d 
R13: 00000000004bb945 R14: 00000000004c8660 R15: 0000000000000000
89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 eb b9 fb ff c3 66 2e 0f 1f 84 00 00 00 00 
RSP: 002b:00007f3179738c68 EFLAGS: 00000246 ORIG_RAX: 0000000000000007
RAX: ffffffffffffffda RBX: 00007f31797396d4 RCX: 0000000000455b29
RDX: 00000000000000ec RSI: 0000000000000004 RDI: 0000000020000080
RBP: 000000000072bea0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff
R13: 00000000004c05f4 R14: 00000000004cfde8 R15: 0000000000000000
Modules linked in:
Dumping ftrace buffer:
   (ftrace buffer empty)
CR2: 0000000000000000
---[ end trace 644a6126a6e57fb8 ]---
RIP: 0010:          (null)
Code: Bad RIP value.
RSP: 0018:ffff88018ff47590 EFLAGS: 00010246
RAX: 0000000000000000 RBX: ffff8801a8a00800 RCX: 1ffffffff10ea9fd
RDX: ffff88018ff47ab0 RSI: ffff8801b5ad0940 RDI: ffff8801b10af540
RBP: ffff88018ff47700 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 1ffff10031fe8eb7
R13: ffff88018ff47ab0 R14: ffff8801a8a00812 R15: ffff8801a8a00c58
FS:  00007f3179739700(0000) GS:ffff8801daf00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffffffffffffd6 CR3: 00000001b31d9000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400

Crashes (2):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2018/06/19 01:51 net-next-old f0dc7f9c6dd9 45c54f75 .config console log report ci-upstream-net-kasan-gce
2018/06/18 23:22 net-next-old f0dc7f9c6dd9 45c54f75 .config console log report ci-upstream-net-kasan-gce
* Struck through repros no longer work on HEAD.