https://sourceware.org/bugzilla/show_bug.cgi?id=26047
Bug ID: 26047
Summary: Don't allow linking ET_EXEC
Product: binutils
Version: 2.35 (HEAD)
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: ld
Assignee: unassigned at sourceware dot org
Reporter: i at maskray dot me
Target Milestone: ---
% as /dev/null -o a.o
% ld.bfd a.o -o a
ld.bfd: warning: cannot find entry symbol _start; defaulting to
0000000000401000
# a is an ET_EXEC
## GNU ld allows input ET_EXEC like an ET_REL
% ld.bfd a -o b
ld.bfd: warning: cannot find entry symbol _start; not setting start address
## gold disallows input ET_EXEC
% gold a -o b
gold: error: a: unsupported ELF file type 2
Accepting ET_EXEC may cause problems which will be hard to diagnose.
The Linux kernel for a narrow window misused ET_EXEC as an input, which was
fixed by my
https://git.kernel.org/torvalds/c/90ceddcb495008ac8ba7a3dce297841efcd7d584
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