fs/proc/kcore.c: remove check of list iterator against head past the loop body

When list_for_each_entry() completes the iteration over the whole list
without breaking the loop, the iterator value will be a bogus pointer
computed based on the head element.

While it is safe to use the pointer to determine if it was computed based
on the head element, either with list_entry_is_head() or &pos->member ==
head, using the iterator variable after the loop should be avoided.

In preparation to limit the scope of a list iterator to the list traversal
loop, use a dedicated pointer to point to the found element [1].

[[email protected]: reduce scope of `iter']
Link: https://lore.kernel.org/all/CAHk-=wgRr_D8CB-D9Kg-c=EHreAsk5SqXPwr9Y7k9sA6cWXJ6w@mail.gmail.com/ [1]
Link: https://lkml.kernel.org/r/[email protected]
Signed-off-by: Jakob Koschel <[email protected]>
Cc: Mike Rapoport <[email protected]>
Cc: David Hildenbrand <[email protected]>
Cc: Oscar Salvador <[email protected]>
Cc: "Brian Johannesmeyer" <[email protected]>
Cc: Cristiano Giuffrida <[email protected]>
Cc: "Bos, H.J." <[email protected]>
Cc: Alexey Dobriyan <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>

0 files changed, 0 insertions, 0 deletions