On 18/11/2020 13:38, tito via Dng wrote:
On Wed, 18 Nov 2020 12:10:19 +0100
Alessandro Vesely via Dng <dng@lists.dyne.org> wrote:
I enabled core dumps in /etc/security/limits.d/coredump.conf (* -
core unlimited); core_pattern and suid_dumpable are set
appropriately. However, most processes have a soft limit of 0; that
is, core dump disabled:
# for p in $(ps -e -o pid| tail -n +1); do prlimit --noheadings
--core --pid $p 2>/dev/null; done | sort |uniq -c 1 CORE max core
file size 0 0 bytes 260 CORE max core file size 0
unlimited bytes 44 CORE max core file size unlimited unlimited
bytes
Only 44 processes have coredump enabled. Why? I looked for 'ulimit'
in /etc/init.d, .bashrc's, and other starters, but found nothing
relevant.
The one with hard limit 0 is ssh-agent, presumably set by the program
itself for obvious security reasons.
Who is soft-disabling core dumps for the other 260?
Apparmor?
Hmm... I have apparmor=0 in GRUB_CMDLINE_LINUX, but still have an apparmor
script in /etc/init.d. Can it still bite?
Curiously, the shell in the root terminal window had 0. But all daemons were
already started by the time I could put my fingers on a shell's input.
Best
Ale
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