48 lines
1.4 KiB
Diff
48 lines
1.4 KiB
Diff
From b67ddc7bbe31cde7f69f9814204d9bb1d4623c47 Mon Sep 17 00:00:00 2001
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From: Philippe De Swert <philippedeswert@gmail.com>
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Date: Wed, 10 Sep 2014 12:20:41 +0300
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Subject: [PATCH] journal: do not leak mmaps on OOM
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After a section of memory is succesfully allocated, some of the following
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actions can still fail due to lack of memory. In this case -ENOMEM is
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returned without actually freeing the already mapped memory.
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Found with coverity. Fixes: CID#1237762
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---
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src/journal/mmap-cache.c | 10 +++++++---
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1 file changed, 7 insertions(+), 3 deletions(-)
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diff --git a/src/journal/mmap-cache.c b/src/journal/mmap-cache.c
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index 7dbbb5ef38..908562da27 100644
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--- a/src/journal/mmap-cache.c
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+++ b/src/journal/mmap-cache.c
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@@ -496,15 +496,15 @@ static int add_mmap(
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c = context_add(m, context);
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if (!c)
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- return -ENOMEM;
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+ goto outofmem;
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f = fd_add(m, fd);
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if (!f)
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- return -ENOMEM;
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+ goto outofmem;
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w = window_add(m);
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if (!w)
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- return -ENOMEM;
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+ goto outofmem;
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w->keep_always = keep_always;
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w->ptr = d;
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@@ -522,6 +522,10 @@ static int add_mmap(
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if (ret)
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*ret = (uint8_t*) w->ptr + (offset - w->offset);
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return 1;
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+
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+outofmem:
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+ munmap(d, wsize);
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+ return -ENOMEM;
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}
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int mmap_cache_get(
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