Re: bash - reproducible SEGFAULT on rapid SIGINTs

[Chet Ramey]

On 8/30/24 5:05 AM, Eduardo A. Bustamante López wrote:
> On Wed, Aug 28, 2024 at 01:16:57PM +0200, Tycho Kirchner wrote:
> > Hi,
> > Sending rapid SIGINTs from another shell quickly results in a SEGFAULT of the 
> > bash instance receiving them. Steps to reproduce:
> > * Open up a shell SHELL_1 and record its pid, e.g. "echo $$"
> > * Launch another shell and send rapid SIGINTs: while true ; do kill -INT 
> > OTHER_PID; done
> >
> > SHELL_1 quickly dies with a SEGAULT
> >
> > Tested on GNU bash, version 5.2.32(1)-release (x86_64-pc-linux-gnu), compiled via plain 
> > ./configure && make
> >
> > Thanks and Kind Regards
> > Tycho
>
> I am able to reproduce this as well, on the latest devel version
> (2610d40b32301cd7256bf1dfc49c9f8bfe0dcd53).
>
> The shell crashes due to what seems runaway self-recursion while handling the
> interrupt signal in readline:

Thanks, this backtrace was extremely helpful. I'll have a fix in the next
devel branch push.

--
``The lyf so short, the craft so long to lerne.'' - Chaucer
                 ``Ars longa, vita brevis'' - Hippocrates
Chet Ramey, UTech, CWRU    chet@case.edu    http://tiswww.cwru.edu/~chet/

OpenPGP_signature.asc
Description: OpenPGP digital signature