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Re: [BUG] Crash due to malloc call in signal handler

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From: Roman Perepelitsa <roman.perepelitsa@xxxxxxxxx>
To: Peter Stephenson <p.stephenson@xxxxxxxxxxx>
Subject: Re: [BUG] Crash due to malloc call in signal handler
Date: Fri, 13 Dec 2019 10:45:21 +0100
Cc: Zsh hackers list <zsh-workers@xxxxxxx>
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On Fri, Dec 13, 2019 at 10:40 AM Peter Stephenson
<p.stephenson@xxxxxxxxxxx> 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.

Follow-Ups:
- Re: [BUG] Crash due to malloc call in signal handler
  - From: Peter Stephenson

References:
- [BUG] Crash due to malloc call in signal handler
  - From: Antoine C.
- Re: [BUG] Crash due to malloc call in signal handler
  - From: Peter Stephenson

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