https://sourceware.org/bugzilla/show_bug.cgi?id=17047
Bug ID: 17047
Summary: BFD ld crashes on cleanup, if MALLOC_PERTURB_ is set
Product: binutils
Version: 2.25 (HEAD)
Status: NEW
Severity: normal
Priority: P2
Component: ld
Assignee: unassigned at sourceware dot org
Reporter: ueno at gnu dot org
Created attachment 7632
--> https://sourceware.org/bugzilla/attachment.cgi?id=7632&action=edit
a patch
When running the BFD ld with MALLOC_PERTURB_ set, it crashes in the
cleanup phase:
$ echo "int main () { return 0; }" > t.c
$ MALLOC_PERTURB_=1 ./ld/ld-new t.o
./ld/ld-new: warning: cannot find entry symbol _start; defaulting to
00000000004000b0
zsh: segmentation fault (core dumped)
It seems that _bfd_merge_sections_free is traversing already freed
memory. I'm attaching a patch.
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