syzbot


BUG: unable to handle kernel paging request in __get_user_4

Status: closed as dup on 2017/12/19 12:16
Subsystems: net
[Documentation on labels]
Reported-by: syzbot+526b7120b487f61c779d3cadfc1befe4cfe62b54@syzkaller.appspotmail.com
First crash: 2580d, last: 2574d
Duplicate of
Title Repro Cause bisect Fix bisect Count Last Reported
BUG: unable to handle kernel paging request in __switch_to kernel 1 2578d 2574d

Sample crash report:
BUG: unable to handle kernel paging request at 00000000914f0f2b
IP: __get_user_4+0x1e/0x30 arch/x86/lib/getuser.S:72
PGD 5e28067 P4D 5e28067 PUD 5e2a067 PMD 0 
Oops: 0002 [#1] SMP KASAN
Dumping ftrace buffer:
   (ftrace buffer empty)
Modules linked in:
CPU: 0 PID: 3359 Comm: syz-executor7 Not tainted 4.15.0-rc1-mm1+ #29
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
task: 0000000037faf922 task.stack: 0000000044990eb5
RIP: 0010:__get_user_4+0x1e/0x30 arch/x86/lib/getuser.S:72
RSP: 0018:ffff8801c3f0f710 EFLAGS: 00010287
RAX: 0000000020000003 RBX: 1ffff100387e1ee8 RCX: ffffffff8199eeb8
RDX: 0000000000000008 RSI: ffffc90003467000 RDI: 0000000000000282
RBP: ffff8801c3f0fe08 R08: ffff8801c3cf9458 R09: 1ffff100387e1eb7
R10: ffff8801c41e83c0 R11: 0000000000000001 R12: 0000000000000012
R13: ffff8801c38bb800 R14: dffffc0000000000 R15: 0000000000000084
FS:  00007feccbbfe700(0000) GS:ffff8801db400000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: fffffffffffffff8 CR3: 00000001c42a3000 CR4: 00000000001426f0
DR0: 0000000020000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff1 DR7: 00000000000b0602
Call Trace:
 sock_common_setsockopt+0x95/0xd0 net/core/sock.c:2968
 SYSC_setsockopt net/socket.c:1851 [inline]
 SyS_setsockopt+0x189/0x360 net/socket.c:1830
 entry_SYSCALL_64_fastpath+0x1f/0x96
RIP: 0033:0x4529d9
RSP: 002b:00007feccbbfdc58 EFLAGS: 00000212 ORIG_RAX: 0000000000000036
RAX: ffffffffffffffda RBX: 00000000007580d8 RCX: 00000000004529d9
RDX: 0000000000000012 RSI: 0000000000000084 RDI: 0000000000000016
RBP: 000000000000039b R08: 0000000000000004 R09: 0000000000000000
R10: 0000000020000000 R11: 0000000000000212 R12: 00000000006f2728
R13: 00000000ffffffff R14: 00007feccbbfe6d4 R15: 0000000000000006
Code: 00 c3 90 66 2e 0f 1f 84 00 00 00 00 00 48 83 c0 03 72 4f 65 48 8b 14 25 40 65 01 00 48 3b 82 a0 15 00 00 73 3d 0f 1f 00 8b 50 fd <31> c0 0f 1f 00 c3 66 90 66 2e 0f 1f 84 00 00 00 00 00 48 83 c0 
RIP: __get_user_4+0x1e/0x30 arch/x86/lib/getuser.S:72 RSP: ffff8801c3f0f710
CR2: fffffffffffffff8
---[ end trace a459db19e831f560 ]---
Kernel panic - not syncing: Fatal exception
Dumping ftrace buffer:
   (ftrace buffer empty)
Kernel Offset: disabled
Rebooting in 86400 seconds..

Crashes (8):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2017/12/03 15:25 mmots 4131d5166185 29b0fd90 .config console log report ci-upstream-mmots-kasan-gce
2017/12/03 00:40 linux-next fb20eb9d798d 16668351 .config console log report ci-upstream-next-kasan-gce
2017/12/01 03:18 mmots 4131d5166185 29b0fd90 .config console log report ci-upstream-mmots-kasan-gce
2017/11/30 15:54 linux-next 11fed7829bef 29b0fd90 .config console log report ci-upstream-next-kasan-gce
2017/11/30 03:26 mmots 4131d5166185 29b0fd90 .config console log report ci-upstream-mmots-kasan-gce
2017/11/29 13:37 linux-next d127129e85a0 29b0fd90 .config console log report ci-upstream-next-kasan-gce
2017/11/29 13:28 linux-next d127129e85a0 29b0fd90 .config console log report ci-upstream-next-kasan-gce
2017/11/28 11:09 linux-next 5bef2980adef 1808de66 .config console log report ci-upstream-next-kasan-gce
* Struck through repros no longer work on HEAD.