Re: KASAN: use-after-free Write in ext4_mark_inode_dirty

[Theodore Y. Ts'o]

On Fri, Nov 29, 2019 at 12:20:10AM -0800, syzbot wrote:
> Hello,
> 
> syzbot found the following crash on:
> 
> HEAD commit:    a2d79c71 Merge tag 'for-5.3/io_uring-20190711' of git://gi..
> git tree:       upstream
> console output: https://syzkaller.appspot.com/x/log.txt?x=1632a03fa00000
> kernel config:  https://syzkaller.appspot.com/x/.config?x=bf58f4f254e2639
> dashboard link: https://syzkaller.appspot.com/bug?extid=1e407c24e65e1fca3ecf
> compiler:       clang version 9.0.0 (/home/glider/llvm/clang
> 80fee25776c2fb61e74c1ecb1a523375c2500b69)

#syz dup: KASAN: use-after-free Write in __ext4_expand_extra_isize (2)

     	  	 		      	 - Ted