[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [PATCH] Mini-OS: fix 9pfs frontend error path
Jürgen Groß, le mar. 06 févr. 2024 16:37:17 +0100, a ecrit: > On 06.02.24 16:26, Samuel Thibault wrote: > > Juergen Gross, le mar. 06 févr. 2024 07:17:21 +0100, a ecrit: > > > The early error exit in p9_stat() returns without zeroing the p9_stat > > > buffer, resulting in free() being called with an uninitialized pointer. > > > > > > Fix that by doing the zeroing first. > > > > This is not coherent with the usual conventions: when a function fails, > > it is supposed not to have done anything, and thus the caller shouldn't > > have to clean anything. > > > > I.e. i'd rather see the free_stat() call be put after the check for > > an error returned by p9_stat. > > I can do that, but this would require two calls of free_stat() (one in > p9_stat() in an error case reported via req->result, and one in the > caller of p9_stat() in case of no error). Indeed, but that still looks more coherent with usual conventions. Samuel
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