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[Bug binutils/21813] Additional undefined behavior and crashes
From: |
yzhan219 at stevens dot edu |
Subject: |
[Bug binutils/21813] Additional undefined behavior and crashes |
Date: |
Fri, 02 Jul 2021 15:27:54 +0000 |
https://sourceware.org/bugzilla/show_bug.cgi?id=21813
yzhan219 at stevens dot edu changed:
What |Removed |Added
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CC| |yzhan219 at stevens dot edu
--- Comment #6 from yzhan219 at stevens dot edu ---
(In reply to Ned Williamson from comment #0)
> Created attachment 10281 [details]
> 5 testcases with asan output
>
> I've found 5 more bugs in objdump master branch.
>
> These bugs repro for me when building for all targets with a recent version
> of clang and AddressSanitizer and running them with `./objdump -xg testcase`
> (one crash requires debug output).
>
> If any don't reproduce, let me know and I can try to identify another
> testcase or help identify the root cause. I've included `asan_output` with
> my stacktrace for each test.
>
> I have investigated alpha-heap-overflow, and there the fix is to check that
> `PRIV (recrd.rec_size) > test_len` before reading the remaining record.
>
> Cheers,
> Ned
Hi Ned,
I tried to reproduce the crashed by using the test cases you provide. But none
of them works, objdump says "objdump: debug_oob_read: File format not
recognized". Could you please check if you have other test cases? Thank you so
much.
Dennis
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