in_syslog: Fix double free when no parser is set #8976
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When running syslog example: `bin/fluent-bit -i syslog -o stdout -f 1` if no parser is set we get a double-free: ``` [2024/06/18 15:36:32] [ info] [fluent bit] version=3.1.0, commit=2bef95819e, pid=144050 [2024/06/18 15:36:32] [ info] [storage] ver=1.5.2, type=memory, sync=normal, checksum=off, m ax_chunks_up=128 [2024/06/18 15:36:32] [ info] [cmetrics] version=0.9.1 [2024/06/18 15:36:32] [ info] [ctraces ] version=0.5.1 free(): double free detected in tcache 2 [2024/06/18 15:36:32] [ info] [input:syslog:syslog.0] initializing zsh: IOT instruction bin/fluent-bit -i syslog -o stdout -f 1 ``` Remove the redundent flb_log_event_encoder_destroy, since that is already done in syslog_conf_destroy. Signed-off-by: Petter Mabacker <petter.mabacker@esab.se>
belzerus
requested review from
edsiper,
leonardo-albertovich,
fujimotos and
koleini
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When running syslog example:
bin/fluent-bit -i syslog -o stdout -f 1if no parser is set we get a double-free:
Remove the redundent flb_log_event_encoder_destroy, since that is already done in syslog_conf_destroy.
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bin/fluent-bit -i syslog -o stdout -f 1"parser not set" is displayed.
Same output as before this fix, when running valgrind.
If this is a change to packaging of containers or native binaries then please confirm it works for all targets.
ok-package-testlabel to test for all targets (requires maintainer to do).Documentation
Backporting
Fluent Bit is licensed under Apache 2.0, by submitting this pull request I understand that this code will be released under the terms of that license.