Re: N_HDLC line discipline: Race condition

[Dianne Skoll]

On Wed, 15 May 2024 12:33:24 +0200
Jiri Slaby <jirislaby@xxxxxxxxxx> wrote:

> I can repro even with 4.19:

Huh!  I managed to make it happen on Debian's 4.19.67
kernel.  I had to redirect stdout/stderr to a file because printing to the
terminal slowed down the writes enough to prevent it from happening for me.

I guess it's hardware-dependent because I can't reproduce it on kernel
6.6 on a Raspberry Pi.

> > So I guess it was introduced sometime between 4.19.67 and 5.10.209.
> >  I'll take a look to see if I can do a git bisect.

> Were you able to do so?

Unfortunately not; the older kernels failed to compile on my machine and
since I'm not a kernel developer and don't actually use any software that
relies on N_HDLC, I gave up... sorry.

Regards,

Dianne.