linux-kernel - KASAN: use-after-free Read in vc_do

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Message-ID: <7c316748f8a8413b466236fa28eb1e31.squirrel@imail.cse.ust.hk>
Date:   Tue, 14 Jan 2020 14:41:21 +0800
From:   wchenbt@....ust.hk
To:     linux-kernel@...r.kernel.org
Cc:     syzkaller@...glegroups.com
Subject: KASAN: use-after-free Read in vc_do_resize

Dear Linux kernel developers,

I found the crash KASAN: use-after-free Read in vc_do_resize when
running syzkaller, hope its unknown:

Linux version: 1c163f4c7b3f Linux 5.0
Branch: KASAN: use-after-free in vc_do_resize+0x870/0x1250
drivers/tty/vt/vt.c:1239

Please get C repo and crash log generated by syzkaller from google drive
https://drive.google.com/drive/folders/1PUY4XW0ToBxgYuxYgkyGrEAEph7YZ-Xf?usp=sharing,
as well as the .config I used for linux kernel from the attachment.
Thanks.

Thanks,
Wei
Download attachment "config" of type "application/octet-stream" (120408 bytes)