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In-Reply-To: <1576230001.5214.1.camel@samsung.com>
From: Roman Perepelitsa <roman.perepelitsa@gmail.com>
Date: Fri, 13 Dec 2019 10:45:21 +0100
Message-ID: <CAN=4vMoW0QAe2ODVg-6aWxZwJSm+zpooBEU7J1YNxNNJ50nyGQ@mail.gmail.com>
Subject: Re: [BUG] Crash due to malloc call in signal handler
To: Peter Stephenson <p.stephenson@samsung.com>
Cc: Zsh hackers list <zsh-workers@zsh.org>
Content-Type: text/plain; charset="UTF-8"

On Fri, Dec 13, 2019 at 10:40 AM Peter Stephenson
<p.stephenson@samsung.com> wrote:
> The main shell is suspended, waiting for a child to finish, so the fact
> it's in the signal handler isn't saying anything.
>
> From the look of it, some memory corruption must already have occurred
> at this point to get the malloc to fail.

malloc is not async signal safe. It's illegal to call it from a signal
handler. I'm not saying this is what's causing a crash.

Roman.