Messages in this thread | | | From | Linus Torvalds <> | Date | Mon, 6 Sep 2021 18:12:06 -0700 | Subject | Re: [PATCH] Enable '-Werror' by default for all kernel builds |
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On Mon, Sep 6, 2021 at 4:49 PM Guenter Roeck <linux@roeck-us.net> wrote: > > > but I'm not seeing why that one happens on sparc64, but not on arm64 > > or x86-64. There doesn't seem to be anything architecture-specific > > anywhere in that area. > > > > Funky. > > Not really. That is because de->di_fname is always 16 bytes but size > can be 48 if the node is really a link. The use of de is overloaded > in that case; de is struct qnx4_inode_entry (where di_fname is 16 bytes) > but the actual data is struct qnx4_link_info where the name is 48 bytes > long. A possible fix (compile tested only) is below. > > I think the warning/error is only reported with gcc 11.x. Do you possibly > use an older compiler for x86/arm64 ?
No. Literally the same exact version. All of them are
gcc version 11.2.1 20210728
from F34.
I suspect it's something about the config - a sparc64 allmodconfig presumably doesn't end up having some of the things x86-64 has enabled (because of different core config parameters), and then optimizes differently as a result and shows the issue that way.
Or something. <wild handwaving>
Linus
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