Bug#1033655: elpa-flycheck: Emacs28 / flycheck is spawning wild running shellcheck processes eating up the system memory (oom-kill)
Package: elpa-flycheck
Version: 32~git.20200527.9c435db3-3
Severity: grave
X-Debbugs-Cc: none, H.-Dirk Schmitt <dirk@computer42.org>
The combination of Emacs28 + elpa-flycheck + shellcheck in *bookworm* spawn never terminating shellcheck processes.
These are eating up the memory and trigger oom-kill.
**This renders my system unstable.** It appears to be blocked minutes till the oem-kill cleans up some memory.
Analysis:
I have temporarly downgraded elpa-flycheck and shellcheck. The wild processes are still spawned.
So I assume that Emacs28 introduce a different behaviour here that is probematic for flycheck or shellcheck.
Mitigation:
As a mitigation I exclude the invocation of shellcheck in my Emacs setup:
`(customize-set-variable 'flycheck-disabled-checkers '(sh-shellcheck))`
Suggestion:
I suggest to add this mitigation temporarily to the elpa-flycheck package to avoid degraded systems untill a real
solution is found.
-- System Information:
Debian Release: 12.0
APT prefers testing-security
APT policy: (600, 'testing-security'), (600, 'testing'), (500, 'stable-security'), (99, 'stable')
Architecture: amd64 (x86_64)
Foreign Architectures: i386
Kernel: Linux 6.1.0-6-amd64 (SMP w/8 CPU threads; PREEMPT)
Locale: LANG=de_DE.UTF-8, LC_CTYPE=de_DE.UTF-8 (charmap=UTF-8), LANGUAGE=de_DE:de:en_US:en
Shell: /bin/sh linked to /usr/bin/dash
Init: systemd (via /run/systemd/system)
Versions of packages elpa-flycheck depends on:
ii dh-elpa-helper 2.0.16
ii elpa-dash 2.19.1+git20220608.1.0ac1ecf+dfsg-1
ii elpa-let-alist 1.0.6-2
ii elpa-pkg-info 0.6-6
ii elpa-seq 2.23-1
ii emacs 1:28.2+1-13
ii emacs-gtk [emacs] 1:28.2+1-13
ii emacsen-common 3.0.5
Versions of packages elpa-flycheck recommends:
ii emacs 1:28.2+1-13
ii emacs-gtk [emacs] 1:28.2+1-13
Versions of packages elpa-flycheck suggests:
pn flycheck-doc <none>
-- no debconf information
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