general protection fault in smc_setsockopt

Status: fixed on 2018/05/16 09:57
Subsystems: smc
[Documentation on labels]
Reported-by: syzbot+9045fc589fcd196ef522@syzkaller.appspotmail.com
Fix commit: 070204a34884 net/smc: keep clcsock reference in smc_tcp_listen_work()
First crash: 3077d, last: 3008d
▶ ▼ Discussions (2)
Title Replies (including bot) Last reply
[PATCH 4.16 00/55] 4.16.10-stable review 63 (63) 2018/05/19 07:43
[PATCH net 1/1] net/smc: keep clcsock reference in smc_tcp_listen_work() 2 (2) 2018/04/25 18:38

Sample crash report:
kasan: CONFIG_KASAN_INLINE enabled
kasan: GPF could be caused by NULL-ptr deref or user memory access
general protection fault: 0000 [#1] SMP KASAN
Dumping ftrace buffer:
   (ftrace buffer empty)
Modules linked in:
CPU: 1 PID: 4503 Comm: syzkaller463830 Not tainted 4.17.0-rc1+ #10
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:smc_setsockopt+0x8b/0x120 net/smc/af_smc.c:1287
RSP: 0018:ffff8801af847cc8 EFLAGS: 00010206
RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000020000000
RDX: 0000000000000005 RSI: ffffffff873e3bf6 RDI: 0000000000000028
RBP: ffff8801af847cf8 R08: 0000000000000000 R09: ffffed00360a8288
R10: ffffed00360a8288 R11: ffff8801b0541443 R12: ffff8801af847d40
R13: 0000000000000021 R14: 000000000000000d R15: 0000000020000000
FS:  0000000001842880(0000) GS:ffff8801daf00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000558be74dd090 CR3: 00000001b0101000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 __sys_setsockopt+0x1bd/0x390 net/socket.c:1903
 __do_sys_setsockopt net/socket.c:1914 [inline]
 __se_sys_setsockopt net/socket.c:1911 [inline]
 __x64_sys_setsockopt+0xbe/0x150 net/socket.c:1911
 do_syscall_64+0x1b1/0x800 arch/x86/entry/common.c:287
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x43fd19
RSP: 002b:00007ffda23cf428 EFLAGS: 00000217 ORIG_RAX: 0000000000000036
RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 000000000043fd19
RDX: 000000000000000d RSI: 0000000000000021 RDI: 0000000000000004
RBP: 00000000006ca018 R08: 0000000000000000 R09: 00000000004002c8
R10: 0000000020000000 R11: 0000000000000217 R12: 0000000000401640
R13: 00000000004016d0 R14: 0000000000000000 R15: 0000000000000000
Code: fa 48 c1 ea 03 80 3c 02 00 0f 85 93 00 00 00 48 8b 9b 50 04 00 00 48 b8 00 00 00 00 00 fc ff df 48 8d 7b 28 48 89 fa 48 c1 ea 03 <80> 3c 02 00 75 62 48 b8 00 00 00 00 00 fc ff df 4c 8b 63 28 49 
RIP: smc_setsockopt+0x8b/0x120 net/smc/af_smc.c:1287 RSP: ffff8801af847cc8
---[ end trace 22bac354f04a5db0 ]---

Crashes (504):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2018/04/21 17:08 upstream 83beed7b2b26 d23fcf6c .config console log report syz C ci-upstream-kasan-gce-root
2018/04/21 03:48 upstream 83beed7b2b26 ca03d688 .config console log report syz C ci-upstream-kasan-gce
2018/05/01 10:25 upstream 8188fc8bef8c d5b114b4 .config console log report syz C ci-upstream-kasan-gce-386
2018/04/29 11:12 upstream cdface520934 d5a5d045 .config console log report syz C ci-upstream-kasan-gce-386
2018/05/04 02:55 upstream c15f6d8d4715 9ce14f4b .config console log report ci-upstream-kasan-gce
2018/05/03 23:07 upstream c15f6d8d4715 9ce14f4b .config console log report ci-upstream-kasan-gce
2018/05/03 19:12 upstream f4ef6a438cee 9ce14f4b .config console log report ci-upstream-kasan-gce
2018/05/03 15:43 upstream f4ef6a438cee 9ce14f4b .config console log report ci-upstream-kasan-gce
2018/05/03 09:21 upstream f4ef6a438cee 9ce14f4b .config console log report ci-upstream-kasan-gce
2018/05/03 07:03 upstream f4ef6a438cee 9ce14f4b .config console log report ci-upstream-kasan-gce-root
2018/05/03 02:22 upstream 2d618bdf7163 d5b114b4 .config console log report ci-upstream-kasan-gce-root
2018/05/03 00:38 upstream 2d618bdf7163 d5b114b4 .config console log report ci-upstream-kasan-gce-root
2018/05/02 23:02 upstream 2d618bdf7163 d5b114b4 .config console log report ci-upstream-kasan-gce-root
2018/05/02 19:09 upstream 2d618bdf7163 d5b114b4 .config console log report ci-upstream-kasan-gce-root
2018/05/02 16:01 upstream 2d618bdf7163 d5b114b4 .config console log report ci-upstream-kasan-gce-root
2018/05/02 08:40 upstream f2125992e7cb d5b114b4 .config console log report ci-upstream-kasan-gce
2018/05/02 04:53 upstream f2125992e7cb d5b114b4 .config console log report ci-upstream-kasan-gce-root
2018/05/02 03:06 upstream f2125992e7cb d5b114b4 .config console log report ci-upstream-kasan-gce-root
2018/05/02 01:33 upstream f2125992e7cb d5b114b4 .config console log report ci-upstream-kasan-gce
2018/05/01 23:26 upstream fff75eb2a08c d5b114b4 .config console log report ci-upstream-kasan-gce
2018/05/01 19:48 upstream fff75eb2a08c d5b114b4 .config console log report ci-upstream-kasan-gce-root
2018/05/01 14:56 upstream fff75eb2a08c d5b114b4 .config console log report ci-upstream-kasan-gce
2018/05/01 13:28 upstream fff75eb2a08c d5b114b4 .config console log report ci-upstream-kasan-gce
2018/05/01 09:55 upstream 8188fc8bef8c d5b114b4 .config console log report ci-upstream-kasan-gce
2018/05/01 08:35 upstream 8188fc8bef8c d5b114b4 .config console log report ci-upstream-kasan-gce
2018/05/01 03:58 upstream 8188fc8bef8c d5b114b4 .config console log report ci-upstream-kasan-gce
2018/05/01 00:52 upstream 8188fc8bef8c d5b114b4 .config console log report ci-upstream-kasan-gce
2018/04/30 23:09 upstream 8188fc8bef8c d5b114b4 .config console log report ci-upstream-kasan-gce
2018/04/30 21:20 upstream 6da6c0db5316 d5b114b4 .config console log report ci-upstream-kasan-gce
2018/04/30 20:16 upstream 6da6c0db5316 d5b114b4 .config console log report ci-upstream-kasan-gce-root
2018/04/30 17:05 upstream 6da6c0db5316 06db3cec .config console log report ci-upstream-kasan-gce
2018/04/30 14:40 upstream 6da6c0db5316 06db3cec .config console log report ci-upstream-kasan-gce
2018/04/30 13:26 upstream 6da6c0db5316 06db3cec .config console log report ci-upstream-kasan-gce
2018/04/30 10:41 upstream 6da6c0db5316 06db3cec .config console log report ci-upstream-kasan-gce
2018/04/30 08:25 upstream 6da6c0db5316 06db3cec .config console log report ci-upstream-kasan-gce
2018/04/30 02:48 upstream c61a56ababa4 bb79c6ab .config console log report ci-upstream-kasan-gce
2018/04/30 01:15 upstream c61a56ababa4 bb79c6ab .config console log report ci-upstream-kasan-gce
2018/04/29 23:06 upstream c61a56ababa4 bb79c6ab .config console log report ci-upstream-kasan-gce-root
2018/04/29 21:25 upstream c61a56ababa4 bb79c6ab .config console log report ci-upstream-kasan-gce
2018/04/29 19:34 upstream c61a56ababa4 bb79c6ab .config console log report ci-upstream-kasan-gce-root
2018/04/29 16:15 upstream cdface520934 d5a5d045 .config console log report ci-upstream-kasan-gce
2018/04/29 09:08 upstream cdface520934 d5a5d045 .config console log report ci-upstream-kasan-gce
2018/04/29 07:35 upstream cdface520934 d5a5d045 .config console log report ci-upstream-kasan-gce
2018/04/29 04:40 upstream a97d8efd9d35 d5a5d045 .config console log report ci-upstream-kasan-gce
2018/04/29 02:37 upstream a97d8efd9d35 d5a5d045 .config console log report ci-upstream-kasan-gce
2018/04/28 23:38 upstream bf8f5de17442 d5a5d045 .config console log report ci-upstream-kasan-gce-root
2018/02/26 09:48 upstream c89be5242607 9fe8aa42 .config console log report ci-upstream-kasan-gce
2018/05/03 20:45 upstream c15f6d8d4715 9ce14f4b .config console log report ci-upstream-kasan-gce-386
2018/03/20 14:39 upstream 1b5f3ba415fe 72c33b66 .config console log report ci-upstream-kasan-gce-386
2018/04/26 01:58 net-next-old c8ad08929d1b 73417389 .config console log report ci-upstream-net-kasan-gce
2018/02/24 16:25 net-next-old f74290fdb363 5c1e0207 .config console log report ci-upstream-net-kasan-gce
* Struck through repros no longer work on HEAD.