It seems the MDS thread in fmd writes stuff in fm_cb without any synchronisation primitive. fm_cb is also accessed from the main thread.
Wiki: ChangeLog-5.18.04
commit b45a9848ea7df8668bc98aca4db8c74c8662b82b Author: Gary Lee gary.lee@dektech.com.au Date: Wed Jan 31 10:02:06 2018 +1100
fmd: indent to Google style guide [#2763] ran 'clang-format -style=Google' on fmd files no other changes made
commit dd6e26ebf2f728dcc44681189ebd6b939c2c52a7 Author: Gary Lee gary.lee@dektech.com.au Date: Thu Feb 15 09:15:31 2018 +1100
fmd: prevent data races between MDS and main threads [#2763]
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commit b45a9848ea7df8668bc98aca4db8c74c8662b82b
Author: Gary Lee gary.lee@dektech.com.au
Date: Wed Jan 31 10:02:06 2018 +1100
commit dd6e26ebf2f728dcc44681189ebd6b939c2c52a7
Author: Gary Lee gary.lee@dektech.com.au
Date: Thu Feb 15 09:15:31 2018 +1100