From: Mirsad Todorovac mtodorovac69@gmail.com

stable inclusion from stable-v6.6.64 commit d069227df10d26ee484dacab35599102cfa47ee0 category: bugfix bugzilla: https://gitee.com/openeuler/kernel/issues/IBA6RL

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=...

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[ Upstream commit 82e33f249f1126cf3c5f39a31b850d485ac33bc3 ]

Coccinelle complains about the nested reuse of the pointer `iter' with different pointer type:

./fs/proc/kcore.c:515:26-30: ERROR: invalid reference to the index variable of the iterator on line 499 ./fs/proc/kcore.c:534:23-27: ERROR: invalid reference to the index variable of the iterator on line 499 ./fs/proc/kcore.c:550:40-44: ERROR: invalid reference to the index variable of the iterator on line 499 ./fs/proc/kcore.c:568:27-31: ERROR: invalid reference to the index variable of the iterator on line 499 ./fs/proc/kcore.c:581:28-32: ERROR: invalid reference to the index variable of the iterator on line 499 ./fs/proc/kcore.c:599:27-31: ERROR: invalid reference to the index variable of the iterator on line 499 ./fs/proc/kcore.c:607:38-42: ERROR: invalid reference to the index variable of the iterator on line 499 ./fs/proc/kcore.c:614:26-30: ERROR: invalid reference to the index variable of the iterator on line 499

Replacing `struct kcore_list *iter' with `struct kcore_list *tmp' doesn't change the scope and the functionality is the same and coccinelle seems happy.

NOTE: There was an issue with using `struct kcore_list *pos' as the nested iterator. The build did not work!

[akpm@linux-foundation.org: s/tmp/pos/] Link: https://lkml.kernel.org/r/20241029054651.86356-2-mtodorovac69@gmail.com Link: https://lore.kernel.org/all/CAHk-=wgRr_D8CB-D9Kg-c=EHreAsk5SqXPwr9Y7k9sA6cWX... [1] Link: https://lkml.kernel.org/r/20220331223700.902556-1-jakobkoschel@gmail.com Fixes: 04d168c6d42d ("fs/proc/kcore.c: remove check of list iterator against head past the loop body") Signed-off-by: Jakob Koschel jakobkoschel@gmail.com Signed-off-by: Mirsad Todorovac mtodorovac69@gmail.com Cc: Mike Rapoport rppt@kernel.org Cc: David Hildenbrand david@redhat.com Cc: Oscar Salvador osalvador@suse.de Cc: "Brian Johannesmeyer" bjohannesmeyer@gmail.com Cc: Cristiano Giuffrida c.giuffrida@vu.nl Cc: "Bos, H.J." h.j.bos@vu.nl Cc: Alexey Dobriyan adobriyan@gmail.com Cc: Andrew Morton akpm@linux-foundation.org Cc: Yang Li yang.lee@linux.alibaba.com Cc: Baoquan He bhe@redhat.com Cc: Hari Bathini hbathini@linux.ibm.com Cc: Yan Zhen yanzhen@vivo.com Cc: Alexander Gordeev agordeev@linux.ibm.com Signed-off-by: Andrew Morton akpm@linux-foundation.org Signed-off-by: Sasha Levin sashal@kernel.org Signed-off-by: Luo Gengkun luogengkun2@huawei.com --- fs/proc/kcore.c | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/fs/proc/kcore.c b/fs/proc/kcore.c index 7e4fa9c68c1d..0a91f3538459 100644 --- a/fs/proc/kcore.c +++ b/fs/proc/kcore.c @@ -493,13 +493,13 @@ static ssize_t read_kcore_iter(struct kiocb *iocb, struct iov_iter *iter) * the previous entry, search for a matching entry. */ if (!m || start < m->addr || start >= m->addr + m->size) { - struct kcore_list *iter; + struct kcore_list *pos;

m = NULL; - list_for_each_entry(iter, &kclist_head, list) { - if (start >= iter->addr && - start < iter->addr + iter->size) { - m = iter; + list_for_each_entry(pos, &kclist_head, list) { + if (start >= pos->addr && + start < pos->addr + pos->size) { + m = pos; break; } }