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Commit41db973

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Fix incorrect initialization of BackendActivityBuffer.
Since commitc8e8b5a, this has been zeroed out using the wrong length.In practice the length would always be too small, leading to not zeroingthe whole buffer rather than clobbering additional memory; and that'spretty harmless, both because shmem would likely start out as zeroesand because we'd reinitialize any given entry before use. Still,it's bogus, so fix it.Reported by Petru-Florin Mihancea (bug #15312)Discussion:https://postgr.es/m/153363913073.1303.6518849192351268091@wrigleys.postgresql.org
1 parent03838b8 commit41db973

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‎src/backend/postmaster/pgstat.c

Lines changed: 1 addition & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -2695,7 +2695,7 @@ CreateSharedBackendStatus(void)
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if (!found)
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{
2698-
MemSet(BackendActivityBuffer,0,size);
2698+
MemSet(BackendActivityBuffer,0,BackendActivityBufferSize);
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/* Initialize st_activity pointers. */
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buffer=BackendActivityBuffer;

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