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KASAN: stack-out-of-bounds Read in acct_collect

Status: closed as invalid on 2018/07/05 16:25
Subsystems: kernel
[Documentation on labels]
First crash: 2616d, last: 2616d

Sample crash report:
8021q: adding VLAN 0 to HW filter on device team0
8021q: adding VLAN 0 to HW filter on device team0
8021q: adding VLAN 0 to HW filter on device team0
==================================================================
BUG: KASAN: stack-out-of-bounds in acct_collect+0x741/0x860 kernel/acct.c:546
Read of size 8 at addr ffff8801b75baaa0 by task syz-executor1/14731

CPU: 1 PID: 14731 Comm: syz-executor1 Not tainted 4.18.0-rc3+ #130
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x1c9/0x2b4 lib/dump_stack.c:113
 print_address_description+0x6c/0x20b mm/kasan/report.c:256
 kasan_report_error mm/kasan/report.c:354 [inline]
 kasan_report.cold.7+0x242/0x2fe mm/kasan/report.c:412
 __asan_report_load8_noabort+0x14/0x20 mm/kasan/report.c:433
 acct_collect+0x741/0x860 kernel/acct.c:546
 do_exit+0xc27/0x2750 kernel/exit.c:844
PANIC: double fault, error_code: 0x0
CPU: 0 PID: 14728 Comm: syz-executor5 Not tainted 4.18.0-rc3+ #130
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:arch_local_save_flags arch/x86/include/asm/paravirt.h:778 [inline]
RIP: 0010:__lock_acquire+0xb1c/0x5020 kernel/locking/lockdep.c:3311
Code: 88 
48 b8 
00 00 
00 00 
00 fc 
ff df 
48 89 
fa 48 
c1 ea 
03 80 
3c 02 
00 0f 
85 0d 
31 00 
00 48 
83 3d 
0a fd 
92 07 
00 0f 
84 d3 
0a 00 
00 <9c> 
58 0f 
1f 44 
 do_group_exit+0x177/0x440 kernel/exit.c:968
00 00 
f6 c4 
02 0f 
84 
63 f6 
 get_signal+0x88e/0x1970 kernel/signal.c:2468
ff ff 
e8 ff 
32 fd 
01 85 
RSP: 0018:ffff8801b4372fd0 EFLAGS: 00010082
RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000002
RDX: 1ffffffff11e360c RSI: 0000000000000000 RDI: ffffffff88f1b060
RBP: ffff8801b4373360 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: dffffc0000000000 R12: 0000000000000000
R13: ffffffff88f92620 R14: ffff8801cc1aa2c0 R15: 0000000000000002
FS:  00007fd67815b700(0000) GS:ffff8801dae00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffff8801b4372fc8 CR3: 00000001ce602000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:

Crashes (1):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2018/07/05 13:26 upstream fc36def997cf f525fd72 .config console log report syz ci-upstream-kasan-gce-root
* Struck through repros no longer work on HEAD.