syzbot
BUG: corrupted list in process_one_work
Status: closed as invalid on 2018/09/05 12:51
Subsystems:
kernel
[Documentation on labels]
First crash: 2957d, last: 2945d
Sample crash report:
list_add corruption. prev->next should be next (ffff8801236adc28), but was ffff88021fdb96a0. (prev=ffff88010939c488).
------------[ cut here ]------------
kernel BUG at lib/list_debug.c:28!
invalid opcode: 0000 [#1] SMP PTI
CPU: 1 PID: 14001 Comm: kworker/1:5 Not tainted 4.18.0-rc5+ #29
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: (null) (events)
RIP: 0010:__list_add_valid+0x43c/0x450 lib/list_debug.c:26
Code: 0c 00 00 00 00 00 00 41 c7 87 20 03 00 00 00 00 00 00 48 c7 c7 a7 fc dc 8a 31 c0 4c 89 e6 4c 89 ea 48 8b 4d c0 e8 24 ae 2b fd <0f> 0b 66 90 eb fe 0f 1f 40 00 66 2e 0f 1f 84 00 00 00 00 00 55 48
RSP: 0018:ffff8801074afbf8 EFLAGS: 00010046
RAX: 0000000000000075 RBX: 0000000000000000 RCX: 6bcaa2ff1f60d900
RDX: 0000000000000000 RSI: aaaaaaaaaaaab000 RDI: ffffea000cbef440
RBP: ffff8801074afc60 R08: 0000000000480020 R09: 0000000000000002
R10: 0000000000000000 R11: ffffffff8675bad0 R12: ffff8801236adc28
R13: ffff88021fdb96a0 R14: 0000000000000000 R15: ffff8801394c6180
FS: 0000000000000000(0000) GS:ffff88021fd00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000000000b0 CR3: 000000010c066000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
__list_add include/linux/list.h:60 [inline]
list_add_tail include/linux/list.h:93 [inline]
list_move_tail include/linux/list.h:183 [inline]
move_linked_works kernel/workqueue.c:1040 [inline]
process_one_work+0xafd/0x2000 kernel/workqueue.c:2079
worker_thread+0x1136/0x2490 kernel/workqueue.c:2296
kthread+0x473/0x4b0 kernel/kthread.c:247
ret_from_fork+0x35/0x40 arch/x86/entry/entry_64.S:415
Modules linked in:
Dumping ftrace buffer:
(ftrace buffer empty)
---[ end trace b52a608a6da0b18c ]---
RIP: 0010:__list_add_valid+0x43c/0x450 lib/list_debug.c:26
Code: 0c 00 00 00 00 00 00 41 c7 87 20 03 00 00 00 00 00 00 48 c7 c7 a7 fc dc 8a 31 c0 4c 89 e6 4c 89 ea 48 8b 4d c0 e8 24 ae 2b fd <0f> 0b 66 90 eb fe 0f 1f 40 00 66 2e 0f 1f 84 00 00 00 00 00 55 48
RSP: 0018:ffff8801074afbf8 EFLAGS: 00010046
RAX: 0000000000000075 RBX: 0000000000000000 RCX: 6bcaa2ff1f60d900
RDX: 0000000000000000 RSI: aaaaaaaaaaaab000 RDI: ffffea000cbef440
RBP: ffff8801074afc60 R08: 0000000000480020 R09: 0000000000000002
R10: 0000000000000000 R11: ffffffff8675bad0 R12: ffff8801236adc28
R13: ffff88021fdb96a0 R14: 0000000000000000 R15: ffff8801394c6180
FS: 0000000000000000(0000) GS:ffff88021fd00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000000000b0 CR3: 000000010c066000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
* Struck through repros no longer work on HEAD.