* [Bug 216648] New: man 5 core incorrectly states circumstances in which a core is not produced
@ 2022-11-01 12:26 bugzilla-daemon
2022-11-01 14:28 ` [Bug 216648] " bugzilla-daemon
` (2 more replies)
0 siblings, 3 replies; 4+ messages in thread
From: bugzilla-daemon @ 2022-11-01 12:26 UTC (permalink / raw)
To: linux-man
https://bugzilla.kernel.org/show_bug.cgi?id=216648
Bug ID: 216648
Summary: man 5 core incorrectly states circumstances in which a
core is not produced
Product: Documentation
Version: unspecified
Hardware: All
OS: Linux
Status: NEW
Severity: normal
Priority: P1
Component: man-pages
Assignee: documentation_man-pages@kernel-bugs.osdl.org
Reporter: veluca93@gmail.com
Regression: No
As per title, the `core` manpage states:
There are various circumstances in which a core dump file is not
produced:
[...]
* The RLIMIT_CORE (core file size) or RLIMIT_FSIZE (file size)
resource limits for the process are set to zero; see
getrlimit(2) and the documentation of the shell's ulimit
command (limit in csh(1)).
However, this is not actually correct when core dumps are piped to a program,
as the section below states ...
* The RLIMIT_CORE limit is not enforced for core dumps that are
piped to a program via this mechanism.
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* [Bug 216648] man 5 core incorrectly states circumstances in which a core is not produced
2022-11-01 12:26 [Bug 216648] New: man 5 core incorrectly states circumstances in which a core is not produced bugzilla-daemon
@ 2022-11-01 14:28 ` bugzilla-daemon
2022-11-01 14:51 ` bugzilla-daemon
2023-01-08 9:37 ` bugzilla-daemon
2 siblings, 0 replies; 4+ messages in thread
From: bugzilla-daemon @ 2022-11-01 14:28 UTC (permalink / raw)
To: linux-man
https://bugzilla.kernel.org/show_bug.cgi?id=216648
Alejandro Colomar (man-pages) (alx.manpages@gmail.com) changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |alx.manpages@gmail.com
--- Comment #1 from Alejandro Colomar (man-pages) (alx.manpages@gmail.com) ---
Hi Luca,
Do you have any experiments demonstrating the actual behavior? Could you show
them? And do you suggest any specific patch for that page?
You may consider reading
<https://git.kernel.org/pub/scm/docs/man-pages/man-pages.git/tree/CONTRIBUTING>
if you would like to send a patch for the page.
Thanks!
Alex
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* [Bug 216648] man 5 core incorrectly states circumstances in which a core is not produced
2022-11-01 12:26 [Bug 216648] New: man 5 core incorrectly states circumstances in which a core is not produced bugzilla-daemon
2022-11-01 14:28 ` [Bug 216648] " bugzilla-daemon
@ 2022-11-01 14:51 ` bugzilla-daemon
2023-01-08 9:37 ` bugzilla-daemon
2 siblings, 0 replies; 4+ messages in thread
From: bugzilla-daemon @ 2022-11-01 14:51 UTC (permalink / raw)
To: linux-man
https://bugzilla.kernel.org/show_bug.cgi?id=216648
--- Comment #2 from Luca Versari (veluca93@gmail.com) ---
> Do you have any experiments demonstrating the actual behavior? Could you show
> them?
On a system with systemd (or where /proc/sys/kernel/core_pattern is configured
to pipe to a program), run `ulimit -c 0`, then run a program that segfaults
(writing `int main() { *(volatile int *)0; }` in a `segfault.c` file and
running `gcc segfault.c; ./a.out` should be sufficient). This creates a core
dump, despite RLIMIT_CORE being 0.
> And do you suggest any specific patch for that page?
Something like adding ", unless the system is configured to pipe core dumps to
a program" in that bullet point should be sufficient.
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* [Bug 216648] man 5 core incorrectly states circumstances in which a core is not produced
2022-11-01 12:26 [Bug 216648] New: man 5 core incorrectly states circumstances in which a core is not produced bugzilla-daemon
2022-11-01 14:28 ` [Bug 216648] " bugzilla-daemon
2022-11-01 14:51 ` bugzilla-daemon
@ 2023-01-08 9:37 ` bugzilla-daemon
2 siblings, 0 replies; 4+ messages in thread
From: bugzilla-daemon @ 2023-01-08 9:37 UTC (permalink / raw)
To: linux-man
https://bugzilla.kernel.org/show_bug.cgi?id=216648
Luca Versari (veluca93@gmail.com) changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |CODE_FIX
--- Comment #3 from Luca Versari (veluca93@gmail.com) ---
I believe this has been fixed now.
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