managed to produce a SIGSEGV so i now have a core file, this is what i get
ore was generated by `/usr/exim/bin/exim-4.99-2 -qq'.
Program terminated with signal 11, Segmentation fault.
#0 0x00007f7b17bdf622 in strlen () from /lib64/libc.so.6
(gdb) bt
#0 0x00007f7b17bdf622 in strlen () from /lib64/libc.so.6
#1 0x00000000004558d6 in ?? ()
#2 0x00000c5c009109e0 in ?? ()
#3 0x0000000000651860 in ?? ()
#4 0x0000000000000000 in ?? ()
On 2025-11-04 11:00, Jeremy Harris via Exim-users wrote:
OK, that didn't detect anything. We need to investigate a core.
Do a build with "CFLAGS += -O0 -ggdb".
Does Slackware have the systemd-ish coredumpctl stuff?
I suspect not; so we need to enable suid-coredumps.
(Over here, Fedora, the hints are in "man core" which mentions
/proc/sys/fs/suid_dumpable)
and check that "ulimit" does not restrict the size of corefile.
Run a test to get a crash, and locate the core file.
Run up gdb - "sudo gdb <exim-binary-location> <corefile-location>".
Ignore all the offers to load debuginfo file for libraries.
At the prompt: "bt"
You should get a more comprehensive stacktrace, with file and line
number info.
Copy that here. Keep the corefile; we may want to pull some
variable values out of it.
(If you can do IRC, I'm in #exim on irc.libera.chat)
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