syzbot


general protection fault in p9_client_prepare_req
Status: upstream: reported C repro on 2018/07/19 12:09
Reported-by: syzbot+77a28a63a0ece0fbba97@syzkaller.appspotmail.com
First crash: 1407d, last: 1338d

Cause bisection: failed (bisect log)

Fix bisection: failed (bisect log)
Patch testing requests:
Created Duration User Patch Repo Result
2020/10/20 13:08 17m anant.thazhemadam@gmail.com upstream OK

Sample crash report:
RBP: 0000000000000000 R08: 0000000020000840 R09: 0000000000003831
R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc432a9cd0
R13: 0030656c69662f2e R14: 64663d736e617274 R15: 0000000000000006
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
CPU: 1 PID: 4386 Comm: syz-executor227 Not tainted 4.18.0-rc5-next-20180719+ #11
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:p9_client_prepare_req.part.8+0x392/0xa00 net/9p/client.c:645
Code: ff 0f 87 6a 02 00 00 e8 bc 39 0c fa 0f be 85 f4 fe ff ff 4c 89 f2 48 c1 ea 03 89 85 f4 fe ff ff 48 b8 00 00 00 00 00 fc ff df <80> 3c 02 00 0f 85 89 05 00 00 48 b8 00 00 00 00 00 fc ff df 4c 8b 
RSP: 0018:ffff8801bd8c7250 EFLAGS: 00010206
RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000600040
RDX: 000000000000000a RSI: ffffffff87706d04 RDI: ffff8801b9efa378
RBP: ffff8801bd8c7380 R08: ffff8801b9f24080 R09: ffffed0037b18de4
R10: ffffed0037b18de4 R11: 0000000000000003 R12: ffff8801b9efa340
R13: 0000000000002000 R14: 0000000000000050 R15: ffff8801b9efa37c
FS:  0000000001ba1880(0000) GS:ffff8801daf00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020000200 CR3: 00000001b994e000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 p9_client_prepare_req net/9p/client.c:675 [inline]
 p9_client_rpc+0x242/0x1330 net/9p/client.c:675
 p9_client_version net/9p/client.c:890 [inline]
 p9_client_create+0xca4/0x1537 net/9p/client.c:974
 v9fs_session_init+0x21a/0x1a80 fs/9p/v9fs.c:400
 v9fs_mount+0x7c/0x900 fs/9p/vfs_super.c:135
 legacy_get_tree+0x131/0x460 fs/fs_context.c:674
 vfs_get_tree+0x1cb/0x5c0 fs/super.c:1743
 do_new_mount fs/namespace.c:2603 [inline]
 do_mount+0x6f2/0x1e20 fs/namespace.c:2927
 ksys_mount+0x12d/0x140 fs/namespace.c:3143
 __do_sys_mount fs/namespace.c:3157 [inline]
 __se_sys_mount fs/namespace.c:3154 [inline]
 __x64_sys_mount+0xbe/0x150 fs/namespace.c:3154
 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x440719
Code: 18 89 d0 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 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 5b 14 fc ff c3 66 2e 0f 1f 84 00 00 00 00 
RSP: 002b:00007ffc432a9cc8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: ffffffffffffffff RCX: 0000000000440719
RDX: 0000000020000900 RSI: 0000000020000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: 0000000020000840 R09: 0000000000003831
R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc432a9cd0
R13: 0030656c69662f2e R14: 64663d736e617274 R15: 0000000000000006
Modules linked in:
Dumping ftrace buffer:
   (ftrace buffer empty)
---[ end trace bae3d5802518770f ]---
RIP: 0010:p9_client_prepare_req.part.8+0x392/0xa00 net/9p/client.c:645
Code: ff 0f 87 6a 02 00 00 e8 bc 39 0c fa 0f be 85 f4 fe ff ff 4c 89 f2 48 c1 ea 03 89 85 f4 fe ff ff 48 b8 00 00 00 00 00 fc ff df <80> 3c 02 00 0f 85 89 05 00 00 48 b8 00 00 00 00 00 fc ff df 4c 8b 
RSP: 0018:ffff8801bd8c7250 EFLAGS: 00010206
RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000600040
RDX: 000000000000000a RSI: ffffffff87706d04 RDI: ffff8801b9efa378
RBP: ffff8801bd8c7380 R08: ffff8801b9f24080 R09: ffffed0037b18de4
R10: ffffed0037b18de4 R11: 0000000000000003 R12: ffff8801b9efa340
R13: 0000000000002000 R14: 0000000000000050 R15: ffff8801b9efa37c
FS:  0000000001ba1880(0000) GS:ffff8801daf00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020000200 CR3: 00000001b994e000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400

Crashes (106):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Title
ci-upstream-linux-next-kasan-gce-root 2018/07/19 11:14 linux-next 1c34981993da 49f35839 .config log report syz C
ci-upstream-linux-next-kasan-gce-root 2018/09/26 20:16 linux-next 9aa0219c6a4c 455b6354 .config log report
ci-upstream-linux-next-kasan-gce-root 2018/09/26 19:14 linux-next 9aa0219c6a4c 455b6354 .config log report
ci-upstream-linux-next-kasan-gce-root 2018/09/25 08:59 linux-next 8b7a6ebdd4a5 0e7547d7 .config log report
ci-upstream-linux-next-kasan-gce-root 2018/09/25 04:43 linux-next dad486875956 0e7547d7 .config log report
ci-upstream-linux-next-kasan-gce-root 2018/09/25 03:00 linux-next dad486875956 0e7547d7 .config log report
ci-upstream-linux-next-kasan-gce-root 2018/09/24 21:30 linux-next dad486875956 2f485cdf .config log report
ci-upstream-linux-next-kasan-gce-root 2018/09/24 01:08 linux-next 46c163a036b4 28d9ac76 .config log report
ci-upstream-linux-next-kasan-gce-root 2018/09/23 21:23 linux-next 46c163a036b4 28d9ac76 .config log report
ci-upstream-linux-next-kasan-gce-root 2018/09/23 18:06 linux-next 46c163a036b4 37079712 .config log report
ci-upstream-linux-next-kasan-gce-root 2018/09/23 15:19 linux-next 46c163a036b4 37079712 .config log report
ci-upstream-linux-next-kasan-gce-root 2018/09/23 12:49 linux-next 46c163a036b4 37079712 .config log report
ci-upstream-linux-next-kasan-gce-root 2018/09/22 13:14 linux-next 46c163a036b4 37079712 .config log report
ci-upstream-linux-next-kasan-gce-root 2018/09/22 09:43 linux-next 46c163a036b4 37079712 .config log report
ci-upstream-linux-next-kasan-gce-root 2018/09/22 07:17 linux-next 46c163a036b4 37079712 .config log report
ci-upstream-linux-next-kasan-gce-root 2018/09/21 21:22 linux-next 46c163a036b4 37079712 .config log report
ci-upstream-linux-next-kasan-gce-root 2018/09/21 16:26 linux-next 46c163a036b4 37079712 .config log report
ci-upstream-linux-next-kasan-gce-root 2018/09/09 03:40 linux-next f2b6e66e9885 6b5120a4 .config log report
ci-upstream-linux-next-kasan-gce-root 2018/09/08 07:50 linux-next f2b6e66e9885 6b5120a4 .config log report
ci-upstream-linux-next-kasan-gce-root 2018/09/07 03:51 linux-next f2b6e66e9885 e30d3b52 .config log report
ci-upstream-linux-next-kasan-gce-root 2018/09/06 17:31 linux-next f2b6e66e9885 0bb7a7eb .config log report
ci-upstream-linux-next-kasan-gce-root 2018/09/06 06:53 linux-next f2b6e66e9885 873745f2 .config log report
ci-upstream-linux-next-kasan-gce-root 2018/09/05 21:33 linux-next f2b6e66e9885 196410e4 .config log report
ci-upstream-linux-next-kasan-gce-root 2018/09/04 12:55 linux-next f2b6e66e9885 a4718693 .config log report
ci-upstream-linux-next-kasan-gce-root 2018/08/01 07:51 linux-next d1e0b8e0cb7a 1477993e .config log report
ci-upstream-linux-next-kasan-gce-root 2018/08/01 02:00 linux-next d1e0b8e0cb7a 1477993e .config log report
ci-upstream-linux-next-kasan-gce-root 2018/08/01 01:19 linux-next d1e0b8e0cb7a 1477993e .config log report
ci-upstream-linux-next-kasan-gce-root 2018/08/01 00:10 linux-next d1e0b8e0cb7a 1477993e .config log report
ci-upstream-linux-next-kasan-gce-root 2018/07/31 23:07 linux-next d1e0b8e0cb7a 1477993e .config log report
ci-upstream-linux-next-kasan-gce-root 2018/07/31 20:56 linux-next d1e0b8e0cb7a 1477993e .config log report
ci-upstream-linux-next-kasan-gce-root 2018/07/31 19:51 linux-next d1e0b8e0cb7a 1477993e .config log report
ci-upstream-linux-next-kasan-gce-root 2018/07/31 15:50 linux-next d1e0b8e0cb7a 1a381291 .config log report
ci-upstream-linux-next-kasan-gce-root 2018/07/31 05:06 linux-next d1e0b8e0cb7a 1a381291 .config log report
ci-upstream-linux-next-kasan-gce-root 2018/07/31 02:26 linux-next d1e0b8e0cb7a 1a381291 .config log report
ci-upstream-linux-next-kasan-gce-root 2018/07/30 18:44 linux-next d1e0b8e0cb7a 1a381291 .config log report
ci-upstream-linux-next-kasan-gce-root 2018/07/30 13:30 linux-next d1e0b8e0cb7a 1a381291 .config log report
ci-upstream-linux-next-kasan-gce-root 2018/07/30 06:52 linux-next d1e0b8e0cb7a 1a381291 .config log report
ci-upstream-linux-next-kasan-gce-root 2018/07/30 05:59 linux-next d1e0b8e0cb7a 1a381291 .config log report
ci-upstream-linux-next-kasan-gce-root 2018/07/30 04:04 linux-next d1e0b8e0cb7a 1a381291 .config log report
ci-upstream-linux-next-kasan-gce-root 2018/07/30 02:27 linux-next d1e0b8e0cb7a 1a381291 .config log report
ci-upstream-linux-next-kasan-gce-root 2018/07/29 23:35 linux-next d1e0b8e0cb7a 1a381291 .config log report
ci-upstream-linux-next-kasan-gce-root 2018/07/29 18:47 linux-next d1e0b8e0cb7a 0824d7a1 .config log report
ci-upstream-linux-next-kasan-gce-root 2018/07/29 14:19 linux-next d1e0b8e0cb7a 0824d7a1 .config log report
ci-upstream-linux-next-kasan-gce-root 2018/07/29 13:17 linux-next d1e0b8e0cb7a 0824d7a1 .config log report
ci-upstream-linux-next-kasan-gce-root 2018/07/29 10:37 linux-next d1e0b8e0cb7a 0824d7a1 .config log report
ci-upstream-linux-next-kasan-gce-root 2018/07/29 09:37 linux-next d1e0b8e0cb7a 0824d7a1 .config log report