syzbot


KASAN: stack-out-of-bounds Write in destroy_rcu_head

Status: closed as invalid on 2018/07/06 07:38
Subsystems: scsi
[Documentation on labels]
First crash: 2399d, last: 2399d

Sample crash report:
==================================================================
PANIC: double fault, error_code: 0x0
BUG: KASAN: stack-out-of-bounds in __hlist_del include/linux/list.h:681 [inline]
BUG: KASAN: stack-out-of-bounds in hlist_del include/linux/list.h:686 [inline]
BUG: KASAN: stack-out-of-bounds in debug_object_free+0x541/0x690 lib/debugobjects.c:648
CPU: 1 PID: 13979 Comm: syz-executor7 Not tainted 4.18.0-rc3+ #47
Write of size 8 at addr ffff88019c5eaf58 by task syz-executor5/13976
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:__lock_acquire+0x2e/0x5020 kernel/locking/lockdep.c:3294

Code: 41 
CPU: 0 PID: 13976 Comm: syz-executor5 Not tainted 4.18.0-rc3+ #47
57 41 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
89 cf 
Call Trace:
41 56 
 <IRQ>
41 55 
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x1c9/0x2b4 lib/dump_stack.c:113
49 89 
fd 41 
54 45 
89 cc 
53 65 
 print_address_description+0x6c/0x20b mm/kasan/report.c:256
4c 8b 
34 25 
 kasan_report_error mm/kasan/report.c:354 [inline]
 kasan_report.cold.7+0x242/0x2fe mm/kasan/report.c:412
40 ee 
 __asan_report_store8_noabort+0x17/0x20 mm/kasan/report.c:438
01 00 
 __hlist_del include/linux/list.h:681 [inline]
 hlist_del include/linux/list.h:686 [inline]
 debug_object_free+0x541/0x690 lib/debugobjects.c:648
48 83 
e4 f0 
 destroy_rcu_head+0x10/0x20 kernel/rcu/update.c:381
48 81 
 scsi_end_request+0x291/0x890 drivers/scsi/scsi_lib.c:686
ec 60 
03 00 
00 48 
8b 45 
 scsi_io_completion+0xcc6/0x1dd0 drivers/scsi/scsi_lib.c:898
10 <89> 
94 24 
80 
00 00 
 scsi_finish_command+0x54a/0x8f0 drivers/scsi/scsi.c:248
00 48 
ba 00 
00 00 
00 00 
fc ff 
df 48 
89 84 
24 98 
RSP: 0018:ffff88019bbf8f60 EFLAGS: 00010086
RAX: 0000000000000000 RBX: 1ffff1003377f268 RCX: 0000000000000002
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff88f92620
RBP: ffff88019bbf92e8 R08: 0000000000000000 R09: 0000000000000000
 scsi_softirq_done+0x3f6/0x4d0 drivers/scsi/scsi_lib.c:1687
R10: ffff88019c6371b8 R11: ffff8801daf236b3 R12: 0000000000000000
R13: ffffffff88f92620 R14: ffff8801a87fe380 R15: 0000000000000002
FS:  00007f18ef703700(0000) GS:ffff8801daf00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffff88019bbf8f58 CR3: 00000001a0586000 CR4: 00000000001406e0
DR0: 0000000020000000 DR1: 0000000020000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600
Call Trace:

Crashes (1):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2018/07/05 21:13 bpf-next 6fcf9b1d4d6c d3b2a0e2 .config console log report ci-upstream-bpf-next-kasan-gce
* Struck through repros no longer work on HEAD.