syzbot


general protection fault in team_nl_cmd_options_set

Status: fixed on 2019/03/06 07:43
Subsystems: net
[Documentation on labels]
Reported-by: syzbot+68ee510075cf64260cc4@syzkaller.appspotmail.com
Fix commit: 2fdeee254923 team: avoid complex list operations in team_nl_cmd_options_set()
First crash: 1985d, last: 1979d
Discussions (11)
Title Replies (including bot) Last reply
[PATCH 3.16 000/202] 3.16.66-rc1 review 205 (205) 2019/04/28 15:45
[PATCH 3.18 000/134] 3.18.137-stable review 149 (149) 2019/03/28 13:21
[PATCH 4.4 000/230] 4.4.177-stable review 235 (235) 2019/03/24 12:02
[PATCH AUTOSEL 3.18 1/6] s390/dasd: fix using offset into zero size array error 6 (6) 2019/03/11 19:59
[PATCH AUTOSEL 4.4 1/8] gpu: ipu-v3: Fix i.MX51 CSI control registers offset 8 (8) 2019/03/11 19:59
[PATCH 4.20 000/183] 4.20.13-stable review 198 (198) 2019/02/27 09:05
[PATCH 4.9 00/63] 4.9.161-stable review 69 (69) 2019/02/26 18:18
[PATCH 4.19 000/152] 4.19.26-stable review 157 (157) 2019/02/26 17:47
[PATCH 4.14 00/71] 4.14.104-stable review 77 (77) 2019/02/26 17:46
[Patch net] team: avoid complex list operations in team_nl_cmd_options_set() 4 (4) 2019/02/12 19:21
general protection fault in team_nl_cmd_options_set 0 (1) 2019/02/06 21:03

Sample crash report:
netlink: 'syz-executor043': attribute type 3 has an invalid length.
netlink: 'syz-executor043': attribute type 3 has an invalid length.
team0: Mode changed to "activebackup"
kasan: CONFIG_KASAN_INLINE enabled
kasan: GPF could be caused by NULL-ptr deref or user memory access
general protection fault: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 6431 Comm: syz-executor043 Not tainted 4.20.0-rc7+ #161
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:__team_option_inst_tmp_find drivers/net/team/team.c:264 [inline]
RIP: 0010:team_nl_cmd_options_set+0xa2d/0x1370 drivers/net/team/team.c:2591
Code: 8b 74 24 38 75 13 e9 eb 05 00 00 e8 4d 27 e0 fc 49 39 dc 0f 84 dd 05 00 00 e8 3f 27 e0 fc 49 8d 7c 24 10 48 89 f8 48 c1 e8 03 <42> 80 3c 38 00 0f 85 af 06 00 00 49 8b 44 24 10 4c 8d 60 f0 49 39
RSP: 0018:ffff8881af967270 EFLAGS: 00010203
RAX: 000000060dac2cae RBX: ffff8881d189dc00 RCX: ffffffff849f5cb7
RDX: 0000000000000000 RSI: ffffffff849f5d31 RDI: 000000306d616574
RBP: ffff8881af9674d0 R08: ffff8881cc646080 R09: ffffed103b5e5020
R10: ffffed103b5e5020 R11: ffff8881daf28107 R12: 000000306d616564
R13: ffff8881d189de10 R14: ffff8881af967360 R15: dffffc0000000000
FS:  00007fad37cf4700(0000) GS:ffff8881daf00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000004d1810 CR3: 00000001b96af000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 genl_family_rcv_msg+0x8a7/0x11a0 net/netlink/genetlink.c:601
 genl_rcv_msg+0xc6/0x168 net/netlink/genetlink.c:626
 netlink_rcv_skb+0x172/0x440 net/netlink/af_netlink.c:2477
 genl_rcv+0x28/0x40 net/netlink/genetlink.c:637
 netlink_unicast_kernel net/netlink/af_netlink.c:1310 [inline]
 netlink_unicast+0x5a5/0x760 net/netlink/af_netlink.c:1336
 netlink_sendmsg+0xa18/0xfc0 net/netlink/af_netlink.c:1917
 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: 0033:0x44de49
Code: e8 1c ba 02 00 48 83 c4 18 c3 0f 1f 80 00 00 00 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 0f 83 fb c5 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007fad37cf3d88 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00000000006e0c5c RCX: 000000000044de49
RDX: 0000000000000000 RSI: 0000000020000200 RDI: 0000000000000004
RBP: 00000000006e0c50 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000006c61767265
R13: 746e695f6e696f6a R14: 0000000000000000 R15: 0000000000000000
Modules linked in:
---[ end trace da19b5a20e6fec24 ]---
RIP: 0010:__team_option_inst_tmp_find drivers/net/team/team.c:264 [inline]
RIP: 0010:team_nl_cmd_options_set+0xa2d/0x1370 drivers/net/team/team.c:2591
Code: 8b 74 24 38 75 13 e9 eb 05 00 00 e8 4d 27 e0 fc 49 39 dc 0f 84 dd 05 00 00 e8 3f 27 e0 fc 49 8d 7c 24 10 48 89 f8 48 c1 e8 03 <42> 80 3c 38 00 0f 85 af 06 00 00 49 8b 44 24 10 4c 8d 60 f0 49 39
RSP: 0018:ffff8881af967270 EFLAGS: 00010203
RAX: 000000060dac2cae RBX: ffff8881d189dc00 RCX: ffffffff849f5cb7
RDX: 0000000000000000 RSI: ffffffff849f5d31 RDI: 000000306d616574
RBP: ffff8881af9674d0 R08: ffff8881cc646080 R09: ffffed103b5e5020
R10: ffffed103b5e5020 R11: ffff8881daf28107 R12: 000000306d616564
R13: ffff8881d189de10 R14: ffff8881af967360 R15: dffffc0000000000
FS:  00007fad37cf4700(0000) GS:ffff8881daf00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000004d1810 CR3: 00000001b96af000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400

Crashes (7):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2018/12/21 06:11 upstream 9097a058d49e 2b497001 .config console log report syz C ci-upstream-kasan-gce-selinux-root
2018/12/20 15:29 upstream ab63e725b49c aaf59e84 .config console log report syz C ci-upstream-kasan-gce-smack-root
2018/12/20 11:05 upstream ab63e725b49c 02e69052 .config console log report syz C ci-upstream-kasan-gce-root
2018/12/20 10:29 net-old d9842f388b23 02e69052 .config console log report syz C ci-upstream-net-this-kasan-gce
2018/12/20 14:17 net-next-old a9cd3439e3c6 aaf59e84 .config console log report syz C ci-upstream-net-kasan-gce
2018/12/26 11:14 linux-next 6a1d293238c1 8a41a0ad .config console log report syz C ci-upstream-linux-next-kasan-gce-root
2018/12/20 09:12 net-old d9842f388b23 02e69052 .config console log report ci-upstream-net-this-kasan-gce
* Struck through repros no longer work on HEAD.