Messages in this thread | | | Date | Wed, 10 Jan 2024 22:07:34 +0300 | From | Dan Carpenter <> | Subject | Re: [PATCH] netfs, fscache: Prevent Oops in fscache_put_cache() |
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On Wed, Jan 10, 2024 at 07:01:40PM +0000, David Howells wrote: > Dan Carpenter <dan.carpenter@linaro.org> wrote: > > > zero = __refcount_dec_and_test(&cache->ref, &ref); > > - trace_fscache_cache(debug_id, ref - 1, where); > > + trace_fscache_cache(cache->debug_id, ref - 1, where); > > You can't do that if !zero. cache may be deallocated between the two lines.
Ah... Right. I misread what was going on in the latter part of the function. Sorry, I'll resend.
regards, dan carpenter
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