Messages in this thread | | | From | Linus Torvalds <> | Date | Sun, 12 Dec 2021 10:29:01 -0800 | Subject | Re: [PATCH] fs/binfmt_elf.c: disallow zero entry point address |
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On Sun, Dec 12, 2021 at 5:52 AM H.J. Lu <hjl.tools@gmail.com> wrote: > > On Sat, Dec 11, 2021 at 11:38 PM Alexey Dobriyan <adobriyan@gmail.com> wrote: > > > > Why not let it segfault? > > Why let it segfault?
That's not my main worry - what if somebody has a code section with a zero vaddr and intentionally put the entry at the beginning?
Maybe it's not supposed to work by some paper standatd, but afaik currently it _would_ work.
All these things are relative to the load address, so a zero e_entry doesn't mean NULL, and may be a perfectly valid address.
No?
Linus
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