The patch titled Subject: lib-alloc_tag-do-not-acquire-non-existent-lock-in-alloc_tag_top_users-v3 has been added to the -mm mm-hotfixes-unstable branch. Its filename is lib-alloc_tag-do-not-acquire-non-existent-lock-in-alloc_tag_top_users-v3.patch

This patch will shortly appear at https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches...

This patch will later appear in the mm-hotfixes-unstable branch at git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

Before you just go and hit "reply", please: a) Consider who else should be cc'ed b) Prefer to cc a suitable mailing list as well c) Ideally: find the original patch on the mailing list and do a reply-to-all to that, adding suitable additional cc's

*** Remember to use Documentation/process/submit-checklist.rst when testing your code ***

The -mm tree is included into linux-next via the mm-everything branch at git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm and is updated there every 2-3 working days

------------------------------------------------------ From: Harry Yoo harry.yoo@oracle.com Subject: lib-alloc_tag-do-not-acquire-non-existent-lock-in-alloc_tag_top_users-v3 Date: Tue, 24 Jun 2025 16:25:13 +0900

Link: https://lkml.kernel.org/r/20250624072513.84219-1-harry.yoo@oracle.com Reported-by: kernel test robot oliver.sang@intel.com Closes: https://lore.kernel.org/oe-lkp/202506181351.bba867dd-lkp@intel.com Closes: https://lore.kernel.org/oe-lkp/202506131711.5b41931c-lkp@intel.com Fixes: 780138b12381 ("alloc_tag: check mem_profiling_support in alloc_tag_init") Fixes: 1438d349d16b ("lib: add memory allocations report in show_mem()") Signed-off-by: Harry Yoo harry.yoo@oracle.com Cc: Casey Chen cachen@purestorage.com Cc: David Wang 00107082@163.com Cc: Kent Overstreet kent.overstreet@linux.dev Cc: Suren Baghdasaryan surenb@google.com Cc: Yuanyuan Zhong yzhong@purestorage.com Cc: stable@vger.kernel.org Signed-off-by: Andrew Morton akpm@linux-foundation.org ---

lib/alloc_tag.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)

--- a/lib/alloc_tag.c~lib-alloc_tag-do-not-acquire-non-existent-lock-in-alloc_tag_top_users-v3 +++ a/lib/alloc_tag.c @@ -137,7 +137,8 @@ size_t alloc_tag_top_users(struct codeta

if (IS_ERR_OR_NULL(alloc_tag_cttype)) return 0; - else if (can_sleep) + + if (can_sleep) codetag_lock_module_list(alloc_tag_cttype, true); else if (!codetag_trylock_module_list(alloc_tag_cttype)) return 0; _

Patches currently in -mm which might be from harry.yoo@oracle.com are

lib-alloc_tag-do-not-acquire-non-existent-lock-in-alloc_tag_top_users.patch lib-alloc_tag-do-not-acquire-non-existent-lock-in-alloc_tag_top_users-v3.patch