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Bug
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Resolution: Unresolved
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Undefined
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None
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None
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None
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Important
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rhel-sst-cs-net-perf-services
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ssg_core_services
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None
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False
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-
None
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Red Hat Enterprise Linux
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None
-
None
-
None
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None
What were you trying to do that didn't work?
A customer is seeing a memory leak in sendmail-milter on RHEL8, compared to RHEL9.
Digging into this, I could see the following patch related to memory usage:
$ diff -u rhel-8.8.0/sendmail-8.15.2/libmilter/engine.c rhel-9.2.0/sendmail-8.16.1/libmilter/engine.c
--- rhel-8.8.0/sendmail-8.15.2/libmilter/engine.c 2015-05-22 15:42:27.000000000 +0200
+++ rhel-9.2.0/sendmail-8.16.1/libmilter/engine.c 2020-05-19 21:54:32.000000000 +0200
[...]
@@ -703,8 +703,12 @@
(void *) &v, MILTER_LEN_BYTES);
len = milter_addsymlist(ctx, buf, &buffer);
if (buffer != NULL)
+ {
ret = mi_wr_cmd(sd, timeout_ptr, SMFIC_OPTNEG,
buffer, len);
+ if (buffer != buf)
+ free(buffer);
+ }
else
ret = MI_FAILURE;
}
[...]
I gave a test package to the customer to confirm this fixes the leak for him.
Please provide the package NVR for which bug is seen:
sendmail-8.15.2
How reproducible:
Always on customer system
Steps to reproduce
The customer provided a test utility reproducing the leak in the original case.
