commit ae068b67619673618814059f96802314e08050d1 Author: Greg Kroah-Hartman Date: Wed Jul 29 17:48:29 2026 +0200 Linux 6.6.146 Signed-off-by: Greg Kroah-Hartman commit d8a1f7420d2d58fcbde479bd72d0900fb512cb2d Author: Lorenzo Stoakes Date: Tue Sep 24 21:10:23 2024 +0100 mm: refactor mm_access() to not return NULL [ Upstream commit cd3f8467afd470ccab0de2fbc7c76664af4a0bac ] mm_access() can return NULL if the mm is not found, but this is handled the same as an error in all callers, with some translating this into an -ESRCH error. Only proc_mem_open() returns NULL if no mm is found, however in this case it is clearer and makes more sense to explicitly handle the error. Additionally we take the opportunity to refactor the function to eliminate unnecessary nesting. Simplify things by simply returning -ESRCH if no mm is found - this both eliminates confusing use of the IS_ERR_OR_NULL() macro, and simplifies callers which would return -ESRCH by returning this error directly. [lorenzo.stoakes@oracle.com: prefer neater pointer error comparison] Link: https://lkml.kernel.org/r/2fae1834-749a-45e1-8594-5e5979cf7103@lucifer.local Link: https://lkml.kernel.org/r/20240924201023.193135-1-lorenzo.stoakes@oracle.com Signed-off-by: Lorenzo Stoakes Suggested-by: Arnd Bergmann Cc: Al Viro Signed-off-by: Andrew Morton Signed-off-by: Sasha Levin