31 lines
762 B
Diff
31 lines
762 B
Diff
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From 498385e3aaf265d6e9786e0a391196cd82ab3260 Mon Sep 17 00:00:00 2001
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From: Pingfan Liu <piliu@redhat.com>
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Date: Fri, 18 Jun 2021 18:14:20 +0800
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Subject: [PATCH 6/6] numactl.c: fix use after free
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The following command can trigger the bug
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numactl --length 65536 --shm xxx -p0 -V > /dev/null
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So reset mask to block any new access inside this loop.
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Signed-off-by: Pingfan Liu <piliu@redhat.com>
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---
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numactl.c | 1 +
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1 file changed, 1 insertion(+)
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diff --git a/numactl.c b/numactl.c
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index 5a9d2df..ae41d6c 100644
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--- a/numactl.c
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+++ b/numactl.c
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@@ -544,6 +544,7 @@ int main(int ac, char **av)
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if (nnodes != 1)
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usage();
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numa_bitmask_free(mask);
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+ mask = NULL;
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errno = 0;
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did_node_cpu_parse = 1;
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numa_set_bind_policy(0);
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--
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2.29.2
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