Re: memory leak in dma_buf_ioctl

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On Thu, 25 Jul 2019 19:34:01 -0700
syzbot <syzbot+b2098bc44728a4efb3e9@xxxxxxxxxxxxxxxxxxxxxxxxx> wrote:

> syzbot has bisected this bug to:
> 
> commit 04cf31a759ef575f750a63777cee95500e410994
> Author: Michael Ellerman <mpe@xxxxxxxxxxxxxx>
> Date:   Thu Mar 24 11:04:01 2016 +0000
> 
>      ftrace: Make ftrace_location_range() global

It's sad that I have yet to find a single syzbot bisect useful. Really?
setting a function from static to global will cause a memory leak in a
completely unrelated area of the kernel?

I'm about to set these to my /dev/null folder.

-- Steve


> 
> bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=154293f4600000
> start commit:   abdfd52a Merge tag 'armsoc-defconfig' of git://git.kernel...
> git tree:       upstream
> final crash:    https://syzkaller.appspot.com/x/report.txt?x=174293f4600000
> console output: https://syzkaller.appspot.com/x/log.txt?x=134293f4600000
> kernel config:  https://syzkaller.appspot.com/x/.config?x=d31de3d88059b7fa
> dashboard link: https://syzkaller.appspot.com/bug?extid=b2098bc44728a4efb3e9
> syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=12526e58600000
> C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=161784f0600000
> 
> Reported-by: syzbot+b2098bc44728a4efb3e9@xxxxxxxxxxxxxxxxxxxxxxxxx
> Fixes: 04cf31a759ef ("ftrace: Make ftrace_location_range() global")
> 
> For information about bisection process see: https://goo.gl/tpsmEJ#bisection




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