From: Peter Stephenson <p.stephenson@samsung.com>
To: <zsh-workers@zsh.org>, Antoine C. <acalando@free.fr>
Subject: Re: Re : Re: Re : [BUG] Crash due to malloc call in signal handler
Date: Wed, 18 Dec 2019 10:01:38 +0000 [thread overview]
Message-ID: <1576663298.4536.12.camel@samsung.com> (raw)
In-Reply-To: <1548982683.1013827769.1576607530234.JavaMail.root@zimbra62-e11.priv.proxad.net>
On Tue, 2019-12-17 at 19:32 +0100, Antoine C. wrote:
> Good news(!), I finally get another crash with a backtrace, despite
> Peter's last patch. This one, like the previous, is triggered by debug
> code because of two simultaneous free() calls from main and signal
> contexts.
Great, thanks.
OK, the suspect here is the arithmetic code --- it looks like it's
running unprotected against signals, despite the fact it can set
variables. Arithmetic is a quick operation, so hopefully we can block
fairly high up the stack. I should get a chance to look later
(but I don't think this is rocket science from this point on so maybe
someone will beat me to it).
pws
> #9 0x000055e115ce40f4 in zhandler (sig=17) at signals.c:648
...
> #23 0x000055e115c7cddf in execarith (state=0x7ffea5b39110, do_exec=0) at exec.c:5111
next parent reply other threads:[~2019-12-18 10:02 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <CGME20191217183216epcas1p1e81fb3dc675bab810e8d29ac0f53242c@epcas1p1.samsung.com>
[not found] ` <1548982683.1013827769.1576607530234.JavaMail.root@zimbra62-e11.priv.proxad.net>
2019-12-18 10:01 ` Peter Stephenson [this message]
2019-12-18 10:44 ` Peter Stephenson
2019-12-22 18:44 ` Re : " Antoine C.
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