linux-kernel - Re: WARNING: kernel stack frame pointer has bad value (2)

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Date:   Sun, 09 Sep 2018 06:16:02 -0700
From:   syzbot <syzbot+903cdd6bce9a6eb832a4@...kaller.appspotmail.com>
To:     ak@...ux.intel.com, dvyukov@...gle.com, ebiggers@...gle.com,
        hpa@...or.com, jgross@...e.com, keescook@...omium.org,
        linux-kernel@...r.kernel.org, luto@...nel.org,
        megha.dey@...ux.intel.com, mingo@...hat.com,
        syzkaller-bugs@...glegroups.com, tglx@...utronix.de, x86@...nel.org
Subject: Re: WARNING: kernel stack frame pointer has bad value (2)

syzbot has found a reproducer for the following crash on:

HEAD commit:    28619527b8a7 Merge git://git.kernel.org/pub/scm/linux/kern..
git tree:       bpf
console output: https://syzkaller.appspot.com/x/log.txt?x=14800f0a400000
kernel config:  https://syzkaller.appspot.com/x/.config?x=8f59875069d721b6
dashboard link: https://syzkaller.appspot.com/bug?extid=903cdd6bce9a6eb832a4
compiler:       gcc (GCC) 8.0.1 20180413 (experimental)
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=16a79cbe400000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=172a3d01400000

IMPORTANT: if you fix the bug, please add the following tag to the commit:
Reported-by: syzbot+903cdd6bce9a6eb832a4@...kaller.appspotmail.com

00000000d154fefb: 000000000044a069 (0x44a069)
000000006f318b9e: 0000000000000033 (0x33)
000000007d449f84: 0000000000000246 (0x246)
00000000e7603b48: 00007f129ff8fce8 (0x7f129ff8fce8)
00000000187b73f3: 000000000000002b (0x2b)
WARNING: kernel stack frame pointer at 00000000c37350d4 in  
syz-executor951:10824 has bad value 00000000530130ef