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-rw-r--r--rts/Schedule.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/rts/Schedule.c b/rts/Schedule.c
index 94f756c5e4..5b5e765231 100644
--- a/rts/Schedule.c
+++ b/rts/Schedule.c
@@ -2331,7 +2331,9 @@ setNumCapabilities (uint32_t new_n_capabilities USED_IF_THREADS)
moreCapabilities(n_capabilities, new_n_capabilities);
// Resize and update storage manager data structures
+ ACQUIRE_SM_LOCK;
storageAddCapabilities(n_capabilities, new_n_capabilities);
+ RELEASE_SM_LOCK;
}
}