From: Alexander Lobakin aleksander.lobakin@intel.com
stable inclusion from stable-v5.10.224 commit c10ac31a72deb8560bf383148146c00a1892bb81 category: bugfix bugzilla: https://gitee.com/src-openeuler/kernel/issues/IAQOJ9 CVE: CVE-2024-45025
Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?h=t...
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commit c1023f5634b9bfcbfff0dc200245309e3cde9b54 upstream.
bitmap_size() is a pretty generic name and one may want to use it for a generic bitmap API function. At the same time, its logic is not "generic", i.e. it's not just `nbits -> size of bitmap in bytes` converter as it would be expected from its name. Add the prefix 'idset_' used throughout the file where the function resides.
Reviewed-by: Przemek Kitszel przemyslaw.kitszel@intel.com Acked-by: Peter Oberparleiter oberpar@linux.ibm.com Signed-off-by: Alexander Lobakin aleksander.lobakin@intel.com Signed-off-by: David S. Miller davem@davemloft.net Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org Signed-off-by: Long Li leo.lilong@huawei.com --- drivers/s390/cio/idset.c | 10 ++++++---- 1 file changed, 6 insertions(+), 4 deletions(-)
diff --git a/drivers/s390/cio/idset.c b/drivers/s390/cio/idset.c index 45f9c0736be4..0a1105a483bf 100644 --- a/drivers/s390/cio/idset.c +++ b/drivers/s390/cio/idset.c @@ -16,7 +16,7 @@ struct idset { unsigned long bitmap[]; };
-static inline unsigned long bitmap_size(int num_ssid, int num_id) +static inline unsigned long idset_bitmap_size(int num_ssid, int num_id) { return BITS_TO_LONGS(num_ssid * num_id) * sizeof(unsigned long); } @@ -25,11 +25,12 @@ static struct idset *idset_new(int num_ssid, int num_id) { struct idset *set;
- set = vmalloc(sizeof(struct idset) + bitmap_size(num_ssid, num_id)); + set = vmalloc(sizeof(struct idset) + + idset_bitmap_size(num_ssid, num_id)); if (set) { set->num_ssid = num_ssid; set->num_id = num_id; - memset(set->bitmap, 0, bitmap_size(num_ssid, num_id)); + memset(set->bitmap, 0, idset_bitmap_size(num_ssid, num_id)); } return set; } @@ -41,7 +42,8 @@ void idset_free(struct idset *set)
void idset_fill(struct idset *set) { - memset(set->bitmap, 0xff, bitmap_size(set->num_ssid, set->num_id)); + memset(set->bitmap, 0xff, + idset_bitmap_size(set->num_ssid, set->num_id)); }
static inline void idset_add(struct idset *set, int ssid, int id)