general protection fault in smc_getsockopt

Status: fixed on 2018/05/16 09:57
Subsystems: smc
[Documentation on labels]
Reported-by: syzbot+28a2c86cf19c81d871fa@syzkaller.appspotmail.com
Fix commit: 070204a34884 net/smc: keep clcsock reference in smc_tcp_listen_work()
First crash: 3074d, last: 3009d
▶ ▼ 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: 0 PID: 4453 Comm: syzkaller195235 Not tainted 4.17.0-rc1+ #11
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:smc_getsockopt+0x8b/0x120 net/smc/af_smc.c:1298
RSP: 0018:ffff8801b48dfcc0 EFLAGS: 00010206
RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000020000000
RDX: 0000000000000005 RSI: ffffffff873e4d16 RDI: 0000000000000028
RBP: ffff8801b48dfcf0 R08: 0000000020000040 R09: ffffed0036a80780
R10: ffffed0036a80780 R11: ffff8801b5403c03 R12: ffff8801b48dfd40
R13: 0000000000000000 R14: 0000000000000008 R15: 0000000020000000
FS:  0000000001007880(0000) GS:ffff8801dae00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020000040 CR3: 00000001b4c9c000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 __sys_getsockopt+0x1a5/0x370 net/socket.c:1940
 __do_sys_getsockopt net/socket.c:1951 [inline]
 __se_sys_getsockopt net/socket.c:1948 [inline]
 __x64_sys_getsockopt+0xbe/0x150 net/socket.c:1948
 do_syscall_64+0x1b1/0x800 arch/x86/entry/common.c:287
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x43fcf9
RSP: 002b:00007ffceb260648 EFLAGS: 00000217 ORIG_RAX: 0000000000000037
RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 000000000043fcf9
RDX: 0000000000000008 RSI: 0000000000000000 RDI: 0000000000000003
RBP: 00000000006ca018 R08: 0000000020000040 R09: 00000000004002c8
R10: 0000000020000000 R11: 0000000000000217 R12: 0000000000401620
R13: 00000000004016b0 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_getsockopt+0x8b/0x120 net/smc/af_smc.c:1298 RSP: ffff8801b48dfcc0
---[ end trace 12f412216817fb65 ]---

Crashes (577):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2018/04/21 19:48 upstream 5e7c7806111a d23fcf6c .config console log report syz C ci-upstream-kasan-gce-root
2018/04/21 06:39 upstream 83beed7b2b26 ca03d688 .config console log report syz C ci-upstream-kasan-gce
2018/04/29 12:25 upstream cdface520934 d5a5d045 .config console log report syz C ci-upstream-kasan-gce-386
2018/05/04 02:29 upstream c15f6d8d4715 9ce14f4b .config console log report ci-upstream-kasan-gce
2018/05/03 20:39 upstream c15f6d8d4715 9ce14f4b .config console log report ci-upstream-kasan-gce
2018/05/03 16:39 upstream f4ef6a438cee 9ce14f4b .config console log report ci-upstream-kasan-gce
2018/05/03 13:55 upstream f4ef6a438cee 9ce14f4b .config console log report ci-upstream-kasan-gce-root
2018/05/03 12:05 upstream f4ef6a438cee 9ce14f4b .config console log report ci-upstream-kasan-gce
2018/05/03 08:07 upstream f4ef6a438cee 9ce14f4b .config console log report ci-upstream-kasan-gce
2018/05/03 03:38 upstream 2d618bdf7163 d5b114b4 .config console log report ci-upstream-kasan-gce-root
2018/05/02 17:36 upstream 2d618bdf7163 d5b114b4 .config console log report ci-upstream-kasan-gce
2018/05/02 15:55 upstream 2d618bdf7163 d5b114b4 .config console log report ci-upstream-kasan-gce
2018/05/02 13:33 upstream f2125992e7cb d5b114b4 .config console log report ci-upstream-kasan-gce
2018/05/02 07:11 upstream f2125992e7cb d5b114b4 .config console log report ci-upstream-kasan-gce
2018/05/02 04:07 upstream f2125992e7cb d5b114b4 .config console log report ci-upstream-kasan-gce
2018/05/01 23:58 upstream fff75eb2a08c d5b114b4 .config console log report ci-upstream-kasan-gce-root
2018/05/01 22:00 upstream fff75eb2a08c d5b114b4 .config console log report ci-upstream-kasan-gce-root
2018/05/01 18:32 upstream fff75eb2a08c d5b114b4 .config console log report ci-upstream-kasan-gce
2018/05/01 15:07 upstream fff75eb2a08c d5b114b4 .config console log report ci-upstream-kasan-gce
2018/05/01 12:19 upstream fff75eb2a08c d5b114b4 .config console log report ci-upstream-kasan-gce
2018/05/01 10:18 upstream 8188fc8bef8c d5b114b4 .config console log report ci-upstream-kasan-gce
2018/05/01 07:36 upstream 8188fc8bef8c d5b114b4 .config console log report ci-upstream-kasan-gce
2018/05/01 06:05 upstream 8188fc8bef8c d5b114b4 .config console log report ci-upstream-kasan-gce-root
2018/05/01 04:46 upstream 8188fc8bef8c d5b114b4 .config console log report ci-upstream-kasan-gce-root
2018/05/01 01:45 upstream 8188fc8bef8c d5b114b4 .config console log report ci-upstream-kasan-gce
2018/05/01 00:42 upstream 8188fc8bef8c d5b114b4 .config console log report ci-upstream-kasan-gce
2018/04/30 23:22 upstream 8188fc8bef8c d5b114b4 .config console log report ci-upstream-kasan-gce-root
2018/04/30 20:51 upstream 6da6c0db5316 d5b114b4 .config console log report ci-upstream-kasan-gce
2018/04/30 18:55 upstream 6da6c0db5316 06db3cec .config console log report ci-upstream-kasan-gce
2018/04/30 16:26 upstream 6da6c0db5316 06db3cec .config console log report ci-upstream-kasan-gce
2018/04/30 15:16 upstream 6da6c0db5316 06db3cec .config console log report ci-upstream-kasan-gce
2018/04/30 13:48 upstream 6da6c0db5316 06db3cec .config console log report ci-upstream-kasan-gce
2018/04/30 12:18 upstream 6da6c0db5316 06db3cec .config console log report ci-upstream-kasan-gce
2018/04/30 08:40 upstream 6da6c0db5316 06db3cec .config console log report ci-upstream-kasan-gce
2018/04/30 05:46 upstream c61a56ababa4 bb79c6ab .config console log report ci-upstream-kasan-gce
2018/04/30 03:32 upstream c61a56ababa4 bb79c6ab .config console log report ci-upstream-kasan-gce-root
2018/04/29 22:26 upstream c61a56ababa4 bb79c6ab .config console log report ci-upstream-kasan-gce
2018/04/29 19:00 upstream c61a56ababa4 bb79c6ab .config console log report ci-upstream-kasan-gce-root
2018/04/29 10:53 upstream cdface520934 d5a5d045 .config console log report ci-upstream-kasan-gce
2018/04/29 08:51 upstream cdface520934 d5a5d045 .config console log report ci-upstream-kasan-gce-root
2018/04/29 04:47 upstream a97d8efd9d35 d5a5d045 .config console log report ci-upstream-kasan-gce
2018/04/29 01:55 upstream a97d8efd9d35 d5a5d045 .config console log report ci-upstream-kasan-gce
2018/04/29 00:18 upstream a97d8efd9d35 d5a5d045 .config console log report ci-upstream-kasan-gce
2018/04/28 20:27 upstream bf8f5de17442 d5a5d045 .config console log report ci-upstream-kasan-gce-root
2018/04/28 09:52 upstream 46dc111dfe47 d5a5d045 .config console log report ci-upstream-kasan-gce
2018/04/28 05:32 upstream 46dc111dfe47 d5a5d045 .config console log report ci-upstream-kasan-gce
2018/04/28 03:50 upstream 46dc111dfe47 d5a5d045 .config console log report ci-upstream-kasan-gce
2018/04/28 00:43 upstream d8a332730e75 7785e404 .config console log report ci-upstream-kasan-gce-root
2018/04/27 22:52 upstream d8a332730e75 7785e404 .config console log report ci-upstream-kasan-gce-root
2018/04/27 17:55 upstream 0644f186fc9d 7785e404 .config console log report ci-upstream-kasan-gce
2018/04/27 16:06 upstream 0644f186fc9d 7785e404 .config console log report ci-upstream-kasan-gce
2018/04/27 11:56 upstream 0644f186fc9d 73417389 .config console log report ci-upstream-kasan-gce-root
2018/04/27 02:45 upstream 0644f186fc9d 73417389 .config console log report ci-upstream-kasan-gce-root
2018/04/27 06:06 upstream 0644f186fc9d 73417389 .config console log report ci-upstream-kasan-gce-386
2018/02/27 18:34 upstream 6f70eb2b00eb 05b5a32c .config console log report ci-upstream-kasan-gce-386
2018/04/26 10:33 net-next-old c8ad08929d1b 73417389 .config console log report ci-upstream-net-kasan-gce
* Struck through repros no longer work on HEAD.