The patch titled Subject: mm-shrinkers-introduce-debugfs-interface-for-memory-shrinkers-fix has been added to the -mm mm-nonmm-unstable branch. Its filename is mm-shrinkers-introduce-debugfs-interface-for-memory-shrinkers-fix.patch This patch will shortly appear at https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/mm-shrinkers-introduce-debugfs-interface-for-memory-shrinkers-fix.patch This patch will later appear in the mm-nonmm-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: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> Subject: mm-shrinkers-introduce-debugfs-interface-for-memory-shrinkers-fix Date: Mon Jun 6 05:46:42 PM PDT 2022 remove WARN_ON_ONCE(), per Roman Reported-by: syzbot+300d27c79fe6d4cbcc39@xxxxxxxxxxxxxxxxxxxxxxxxx Cc: Christophe JAILLET <christophe.jaillet@xxxxxxxxxx> Cc: Dave Chinner <dchinner@xxxxxxxxxx> Cc: Hillf Danton <hdanton@xxxxxxxx> Cc: Kent Overstreet <kent.overstreet@xxxxxxxxx> Cc: Muchun Song <songmuchun@xxxxxxxxxxxxx> Cc: Roman Gushchin <roman.gushchin@xxxxxxxxx> Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> --- mm/vmscan.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/mm/vmscan.c~mm-shrinkers-introduce-debugfs-interface-for-memory-shrinkers-fix +++ a/mm/vmscan.c @@ -650,7 +650,7 @@ void register_shrinker_prepared(struct s down_write(&shrinker_rwsem); list_add_tail(&shrinker->list, &shrinker_list); shrinker->flags |= SHRINKER_REGISTERED; - WARN_ON_ONCE(shrinker_debugfs_add(shrinker)); + shrinker_debugfs_add(shrinker); up_write(&shrinker_rwsem); } _ Patches currently in -mm which might be from akpm@xxxxxxxxxxxxxxxxxxxx are mm-page_alloc-remotely-drain-per-cpu-lists-checkpatch-fixes.patch mm-start-tracking-vmas-with-maple-tree-fix.patch damon-convert-__damon_va_three_regions-to-use-the-vma-iterator-fix.patch mm-mmap-use-advanced-maple-tree-api-for-mmap_region-fix-checkpatch-fixes.patch mm-remove-the-vma-linked-list-fix-fix.patch mm-remove-the-vma-linked-list-fix-fix-fix.patch mm-handling-non-lru-pages-returned-by-vm_normal_pages-fix.patch mm-introduce-clear_highpage_tagged-fix.patch kasan-fix-zeroing-vmalloc-memory-with-hw_tags-fix.patch mm-shrinkers-add-scan-interface-for-shrinker-debugfs-fix-fix.patch mm-drop-oom-code-from-exit_mmap-fix-fix.patch mm-add-merging-after-mremap-resize-checkpatch-fixes.patch mm-factor-helpers-for-memory_failure_dev_pagemap-fix.patch xfs-support-cow-in-fsdax-mode-fix.patch mm-shrinkers-introduce-debugfs-interface-for-memory-shrinkers-fix.patch