BUG: unable to handle kernel NULL pointer dereference in kernel_sock_shutdown

Status: closed as invalid on 2018/06/27 15:18
Subsystems: smc
[Documentation on labels]
First crash: 3049d, last: 3032d

Sample crash report:
BUG: unable to handle kernel NULL pointer dereference at 0000000000000028
IP: kernel_sock_shutdown+0x4a/0xc0 net/socket.c:3255
PGD 8000000196d62067 P4D 8000000196d62067 PUD 1969ee067 PMD 0 
Oops: 0000 [#1] SMP PTI
Dumping ftrace buffer:
   (ftrace buffer empty)
Modules linked in:
CPU: 0 PID: 4524 Comm: syz-executor510 Not tainted 4.16.0+ #87
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:kernel_sock_shutdown+0x4a/0xc0 net/socket.c:3255
RSP: 0018:ffff8801c973fd20 EFLAGS: 00010246
RAX: ffffffff87b2a5fd RBX: ffff8801969a4418 RCX: ffff8801969a3b00
RDX: 0000000000000000 RSI: 0000000000000002 RDI: 0000000000000000
RBP: ffff8801c973fd60 R08: 0000000001080020 R09: 0000000000000002
R10: 0000000000000000 R11: 00000000fa8c75bc R12: 0000000000000000
R13: 0000000000000002 R14: 0000000000000028 R15: 0000000000000000
FS:  00007f84148ad700(0000) GS:ffff88021fc00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000028 CR3: 00000001be5c8000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 smc_shutdown+0x674/0x810 net/smc/af_smc.c:1264
 SYSC_shutdown+0x2a3/0x400 net/socket.c:1901
 SyS_shutdown+0x44/0x60 net/socket.c:1892
 do_syscall_64+0x309/0x430 arch/x86/entry/common.c:287
 entry_SYSCALL_64_after_hwframe+0x3d/0xa2
RIP: 0033:0x4454f9
RSP: 002b:00007f84148acdb8 EFLAGS: 00000246 ORIG_RAX: 0000000000000030
RAX: ffffffffffffffda RBX: 00000000006dac24 RCX: 00000000004454f9
RDX: 00000000004454f9 RSI: 0000000000000002 RDI: 0000000000000003
RBP: 00000000006dac20 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffeef72b0ff R14: 00007f84148ad9c0 R15: 0000000000000003
Code: 8b 40 08 89 45 d0 8b 83 90 0c 00 00 89 45 d4 4c 8b 23 44 8b bb 88 0c 00 00 e8 73 7e ae f9 4c 89 75 c0 4d 8d 76 28 4d 85 e4 75 5d <4d> 8b 2e 4c 89 f7 e8 9b f3 05 fa 49 83 c5 60 48 83 38 00 75 52 
RIP: kernel_sock_shutdown+0x4a/0xc0 net/socket.c:3255 RSP: ffff8801c973fd20
CR2: 0000000000000028
BUG: unable to handle kernel NULL pointer dereference at 0000000000000028
---[ end trace 7d31262b7c5f7794 ]---
IP: kernel_sock_shutdown+0x4a/0xc0 net/socket.c:3255
PGD 8000000196d62067

Crashes (26):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2018/04/30 06:07 https://github.com/google/kmsan.git master d2d741e5d189 bb79c6ab .config console log report syz C ci-upstream-kmsan-gce
2018/04/26 01:33 https://github.com/google/kmsan.git master d2d741e5d189 73417389 .config console log report syz C ci-upstream-kmsan-gce
2018/04/21 17:47 https://github.com/google/kmsan.git master a7f95e9c8a95 d23fcf6c .config console log report syz C ci-upstream-kmsan-gce
2018/05/08 15:13 https://github.com/google/kmsan.git master d2d741e5d189 045bbd4a .config console log report ci-upstream-kmsan-gce
2018/05/07 15:57 https://github.com/google/kmsan.git master d2d741e5d189 a211da1a .config console log report ci-upstream-kmsan-gce
2018/05/06 18:44 https://github.com/google/kmsan.git master d2d741e5d189 6c18ddb0 .config console log report ci-upstream-kmsan-gce
2018/05/05 17:26 https://github.com/google/kmsan.git master d2d741e5d189 6a0382b5 .config console log report ci-upstream-kmsan-gce
2018/05/05 07:12 https://github.com/google/kmsan.git master d2d741e5d189 9ce14f4b .config console log report ci-upstream-kmsan-gce
2018/05/04 13:01 https://github.com/google/kmsan.git master d2d741e5d189 9ce14f4b .config console log report ci-upstream-kmsan-gce
2018/05/04 10:27 https://github.com/google/kmsan.git master d2d741e5d189 9ce14f4b .config console log report ci-upstream-kmsan-gce
2018/05/04 10:24 https://github.com/google/kmsan.git master d2d741e5d189 9ce14f4b .config console log report ci-upstream-kmsan-gce
2018/05/04 10:20 https://github.com/google/kmsan.git master d2d741e5d189 9ce14f4b .config console log report ci-upstream-kmsan-gce
2018/05/01 06:06 https://github.com/google/kmsan.git master d2d741e5d189 d5b114b4 .config console log report ci-upstream-kmsan-gce
2018/04/27 06:48 https://github.com/google/kmsan.git master d2d741e5d189 73417389 .config console log report ci-upstream-kmsan-gce
2018/04/27 06:45 https://github.com/google/kmsan.git master d2d741e5d189 73417389 .config console log report ci-upstream-kmsan-gce
2018/04/25 20:55 https://github.com/google/kmsan.git master d2d741e5d189 73417389 .config console log report ci-upstream-kmsan-gce
2018/04/25 20:49 https://github.com/google/kmsan.git master d2d741e5d189 73417389 .config console log report ci-upstream-kmsan-gce
2018/04/25 19:13 https://github.com/google/kmsan.git master d2d741e5d189 73417389 .config console log report ci-upstream-kmsan-gce
2018/04/25 19:00 https://github.com/google/kmsan.git master d2d741e5d189 73417389 .config console log report ci-upstream-kmsan-gce
2018/04/25 01:42 https://github.com/google/kmsan.git master d2d741e5d189 37e76fe2 .config console log report ci-upstream-kmsan-gce
2018/04/25 01:35 https://github.com/google/kmsan.git master d2d741e5d189 37e76fe2 .config console log report ci-upstream-kmsan-gce
2018/04/25 00:45 https://github.com/google/kmsan.git master d2d741e5d189 37e76fe2 .config console log report ci-upstream-kmsan-gce
2018/04/24 01:53 https://github.com/google/kmsan.git master d2d741e5d189 0d8e591c .config console log report ci-upstream-kmsan-gce
2018/04/23 11:07 https://github.com/google/kmsan.git master d2d741e5d189 20941ab3 .config console log report ci-upstream-kmsan-gce
2018/04/22 05:22 https://github.com/google/kmsan.git master a7f95e9c8a95 d23fcf6c .config console log report ci-upstream-kmsan-gce
2018/04/21 16:02 https://github.com/google/kmsan.git master a7f95e9c8a95 d23fcf6c .config console log report ci-upstream-kmsan-gce
* Struck through repros no longer work on HEAD.