syzbot

 sign-in | mailing list | source | docs
🐞 Open [1651]
≡ Subsystems
🐞 Fixed [6000]
🐞 Invalid [14793]
⬇ Missing Backports [135]
≡ Crashes
Kernel Health Bugs/Month Bug Lifetimes Fuzzing
Total Repo Heatmap Subsystems Heatmap
💬 Send us feedback

BUG: corrupted list in free_block

Status: auto-closed as invalid on 2019/10/25 08:39
Subsystems: kernel
[Documentation on labels]
Reported-by: syzbot+db65e4a770078362ada3@syzkaller.appspotmail.com
First crash: 2213d, last: 2055d
▶ ▼ Similar bugs (1)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-4.19 BUG: corrupted list in free_block 1 2114d 2114d 0/1 auto-closed as invalid on 2019/10/12 11:20

Sample crash report:
Enabling of bearer <udp:syz1> rejected, already enabled
IPVS: stopping master sync thread 26700 ...
list_del corruption, ffffea0001595f08->next is LIST_POISON1 (dead000000000100)
------------[ cut here ]------------
kernel BUG at lib/list_debug.c:45!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 11904 Comm: kworker/0:5 Not tainted 5.0.0+ #10
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: events cache_reap
RIP: 0010:__list_del_entry_valid.cold+0x23/0x4f lib/list_debug.c:45
Code: e8 25 9d 2e fe 0f 0b 4c 89 f6 48 c7 c7 60 52 a2 87 e8 14 9d 2e fe 0f 0b 4c 89 ea 4c 89 f6 48 c7 c7 a0 51 a2 87 e8 00 9d 2e fe <0f> 0b 4c 89 e2 4c 89 f6 48 c7 c7 00 52 a2 87 e8 ec 9c 2e fe 0f 0b
RSP: 0000:ffff8880658f7bd8 EFLAGS: 00010086
RAX: 000000000000004e RBX: ffffe8ffffc81ce8 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffffffff815ab926 RDI: ffffed100cb1ef6d
RBP: ffff8880658f7bf0 R08: 000000000000004e R09: ffffed1015d05011
R10: ffffed1015d05010 R11: ffff8880ae828087 R12: dead000000000200
R13: dead000000000100 R14: ffffea0001595f08 R15: ffffea0001595f08
FS:  0000000000000000(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f265b8b7000 CR3: 000000008f67a000 CR4: 00000000001406f0
Call Trace:
 __list_del_entry include/linux/list.h:117 [inline]
 list_del include/linux/list.h:125 [inline]
 free_block+0xd8/0x250 mm/slab.c:3416
 drain_array_locked+0x36/0x90 mm/slab.c:2201
 drain_array+0x8c/0xb0 mm/slab.c:4026
 cache_reap+0xf4/0x280 mm/slab.c:4067
 process_one_work+0x98e/0x1790 kernel/workqueue.c:2259
 worker_thread+0x98/0xe40 kernel/workqueue.c:2405
 kthread+0x357/0x430 kernel/kthread.c:253
 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:352
Modules linked in:

======================================================

Crashes (23):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2019/03/07 11:38 upstream f90d64483ebd 8c085c5e .config console log report ci-upstream-kasan-gce-root
2019/02/07 18:21 upstream b0314565da2b aa4feb03 .config console log report ci-upstream-kasan-gce-selinux-root
2019/01/06 11:51 upstream b5aef86e089a 94f8adb5 .config console log report ci-upstream-kasan-gce-root
2019/05/24 08:02 upstream 4dde821e4296 0dadcd9d .config console log report ci-upstream-kasan-gce-386
2019/01/13 08:39 upstream 66c56cfa64d9 c3f3344c .config console log report ci-upstream-kasan-gce-386
2019/06/08 04:03 net-old 38e406f600a2 cf9c3a50 .config console log report ci-upstream-net-this-kasan-gce
2019/05/13 15:57 net-old 69dda13fdaff 16ab1e89 .config console log report ci-upstream-net-this-kasan-gce
2019/04/09 12:43 net-old e063f4598249 995065ff .config console log report ci-upstream-net-this-kasan-gce
2019/03/31 10:11 net-old 288ac524cf70 0c624d4d .config console log report ci-upstream-net-this-kasan-gce
2019/03/30 06:43 net-old 4d31c4fa3f9e c35ee0ea .config console log report ci-upstream-net-this-kasan-gce
2019/06/13 21:48 net-next-old 425b0fad9c7e a139f92f .config console log report ci-upstream-net-kasan-gce
2019/06/08 10:42 net-next-old a6cdeeb16bff cf9c3a50 .config console log report ci-upstream-net-kasan-gce
2019/06/07 17:47 net-next-old 96524ea4be04 ce9107d0 .config console log report ci-upstream-net-kasan-gce
2019/06/02 02:57 net-next-old c1e9e01d4233 53c81ea5 .config console log report ci-upstream-net-kasan-gce
2019/06/01 17:45 net-next-old 0462eaacee49 53c81ea5 .config console log report ci-upstream-net-kasan-gce
2019/05/28 01:43 net-next-old cec4f328c929 6bd61501 .config console log report ci-upstream-net-kasan-gce
2019/05/23 21:30 net-next-old 16fa1cf1ed2a 0dadcd9d .config console log report ci-upstream-net-kasan-gce
2019/05/15 03:58 net-next-old 35c99ffa20ed bd4e3ac7 .config console log report ci-upstream-net-kasan-gce
2019/03/24 21:28 net-next-old e6d1407013a9 acbc5b7d .config console log report ci-upstream-net-kasan-gce
2019/03/05 05:48 net-next-old 9e9322e5d28e 7c693b52 .config console log report ci-upstream-net-kasan-gce
2019/02/20 00:34 net-next-old c9b747dbc203 4df543c9 .config console log report ci-upstream-net-kasan-gce
2019/01/20 10:07 net-next-old 133bbb18ab1a 353f32ea .config console log report ci-upstream-net-kasan-gce
2019/01/07 07:51 net-next-old b71acb0e3721 ee332608 .config console log report ci-upstream-net-kasan-gce
* Struck through repros no longer work on HEAD.