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Subject: Re: PROBLEM: syzkaller found / pool corruption-overwrite / page in
 user-area or NULL
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From: Qian Cai <cai@lca.pw>
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To: Esme <esploit@protonmail.ch>
Cc: James Bottomley <jejb@linux.ibm.com>, "dgilbert@interlog.com" <dgilbert@interlog.com>, "martin.petersen@oracle.com" <martin.petersen@oracle.com>, "linux-scsi@vger.kernel.org" <linux-scsi@vger.kernel.org>, "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>, "linux-mm@kvack.org" <linux-mm@kvack.org>



On 1/10/19 5:58 PM, Esme wrote:
> The console debug/stacks/info from just now.  The previous config, current kernel from github.
> --
> Esme
> 
> [   75.783231] kasan: CONFIG_KASAN_INLINE enabled
> [   75.785870] kasan: GPF could be caused by NULL-ptr deref or user memory access
> [   75.787695] general protection fault: 0000 [#1] SMP KASAN
> [   75.789084] CPU: 0 PID: 3434 Comm: systemd-journal Not tainted 5.0.0-rc1+ #5
> [   75.790938] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.11.1-1ubuntu1 04/01/2014
> [   75.793150] RIP: 0010:rb_insert_color+0x189/0x1480

What's in that line? Try,

$ ./scripts/faddr2line vmlinux rb_insert_color+0x189/0x1480

What's steps to reproduce this?