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47 lines
1.7 KiB
47 lines
1.7 KiB
commit 79528414dc1578800cbf1fba2fbdb6335f4f39bf |
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Author: H.J. Lu <hjl.tools@gmail.com> |
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Date: Thu Sep 30 10:29:17 2021 -0700 |
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elf: Replace nsid with args.nsid [BZ #27609] |
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commit ec935dea6332cb22f9881cd1162bad156173f4b0 |
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Author: Florian Weimer <fweimer@redhat.com> |
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Date: Fri Apr 24 22:31:15 2020 +0200 |
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elf: Implement __libc_early_init |
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has |
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@@ -856,6 +876,11 @@ no more namespaces available for dlmopen()")); |
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/* See if an error occurred during loading. */ |
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if (__glibc_unlikely (exception.errstring != NULL)) |
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{ |
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+ /* Avoid keeping around a dangling reference to the libc.so link |
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+ map in case it has been cached in libc_map. */ |
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+ if (!args.libc_already_loaded) |
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+ GL(dl_ns)[nsid].libc_map = NULL; |
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+ |
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do_dlopen calls _dl_open with nsid == __LM_ID_CALLER (-2), which calls |
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dl_open_worker with args.nsid = nsid. dl_open_worker updates args.nsid |
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if it is __LM_ID_CALLER. After dl_open_worker returns, it is wrong to |
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use nsid. |
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Replace nsid with args.nsid after dl_open_worker returns. This fixes |
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BZ #27609. |
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(cherry picked from commit 1e1ecea62e899acb58c3fdf3b320a0833ddd0dff) |
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diff --git a/elf/dl-open.c b/elf/dl-open.c |
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index ec386626f96e17f7..41c7250bf630f978 100644 |
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--- a/elf/dl-open.c |
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+++ b/elf/dl-open.c |
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@@ -886,7 +886,7 @@ no more namespaces available for dlmopen()")); |
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/* Avoid keeping around a dangling reference to the libc.so link |
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map in case it has been cached in libc_map. */ |
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if (!args.libc_already_loaded) |
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- GL(dl_ns)[nsid].libc_map = NULL; |
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+ GL(dl_ns)[args.nsid].libc_map = NULL; |
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/* Remove the object from memory. It may be in an inconsistent |
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state if relocation failed, for example. */
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