SeongJae Park b5ab490d85 mm/damon/tests/core-kunit: fix memory leak in damon_test_set_filters_default_reject() ... Patch series "mm/damon/tests: fix memory bugs in kunit tests". DAMON kunit tests were initially written assuming those will be run on environments that are well controlled and therefore tolerant to transient test failures and bugs in the test code itself. The user-mode linux based manual run of the tests is one example of such an environment. And the test code was written for adding more test coverage as fast as possible, over making those safe and reliable. As a result, the tests resulted in having a number of bugs including real memory leaks, theoretical unhandled memory allocation failures, and unused memory allocations. The allocation failures that are not handled well are unlikely in the real world, since those allocations are too small to fail. But in theory, it can happen and cause inappropriate memory access. It is arguable if bugs in test code can really harm users. But, anyway bugs are bugs that need to be fixed. Fix the bugs one by one. Also Cc stable@ for the fixes of memory leak and unhandled memory allocation failures. The unused memory allocations are only a matter of memory efficiency, so not Cc-ing stable@. The first patch fixes memory leaks in the test code for the DAMON core layer. Following fifteen, three, and one patches respectively fix unhandled memory allocation failures in the test code for DAMON core layer, virtual address space DAMON operation set, and DAMON sysfs interface, one by one per test function. Final two patches remove memory allocations that are correctly deallocated at the end, but not really being used by any code. This patch (of 22): Kunit test function for damos_set_filters_default_reject() allocates two 'struct damos_filter' objects and not deallocates those, so that the memory for the two objects are leaked for every time the test runs. Fix this by deallocating those objects at the end of the test code. Link: https://lkml.kernel.org/r/20251101182021.74868-1-sj@kernel.org Link: https://lkml.kernel.org/r/20251101182021.74868-2-sj@kernel.org Fixes: 094fb14913 ("mm/damon/tests/core-kunit: add a test for damos_set_filters_default_reject()") Signed-off-by: SeongJae Park <sj@kernel.org> Cc: Brendan Higgins <brendan.higgins@linux.dev> Cc: David Gow <davidgow@google.com> Cc: Kefeng Wang <wangkefeng.wang@huawei.com> Cc: <stable@vger.kernel.org> [6.16+] Signed-off-by: Andrew Morton <akpm@linux-foundation.org>		2025-11-16 17:28:30 -08:00
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damon	mm/damon/tests/core-kunit: fix memory leak in damon_test_set_filters_default_reject()	2025-11-16 17:28:30 -08:00
kasan	kasan: cleanup of kasan_enabled() checks	2025-11-16 17:28:01 -08:00
kfence	kfence: drop nth_page() usage	2025-09-21 14:22:09 -07:00
kmsan	kmsan: remove hard-coded GFP_KERNEL flags	2025-11-16 17:27:54 -08:00
backing-dev.c	fuse update for 6.18	2025-10-03 12:48:18 -07:00
balloon_compaction.c	mm/migrate: fix NULL movable_ops if CONFIG_ZSMALLOC=m	2025-08-19 16:35:57 -07:00
bootmem_info.c
cma_debug.c	mm: cma: simplify cma_maxchunk_get()	2025-07-24 19:12:36 -07:00
cma_sysfs.c
cma.c	mm/cma: refuse handing out non-contiguous page ranges	2025-09-21 14:22:06 -07:00
cma.h	mm: cma: set early_pfn and bitmap as a union in cma_memrange	2025-05-22 14:55:36 -07:00
compaction.c	mm/compaction: fix low_pfn advance on isolating hugetlb	2025-09-28 11:51:29 -07:00
debug_page_alloc.c	mm/debug_page_alloc: improve error message for invalid guardpage minorder	2025-05-12 23:50:38 -07:00
debug_page_ref.c
debug_vm_pgtable.c	treewide: include linux/pgalloc.h instead of asm/pgalloc.h	2025-11-16 17:28:25 -08:00
debug.c	mm/debug: fix missing space in case statement	2025-11-16 17:28:29 -08:00
dmapool_test.c
dmapool.c	docs: dma-api: replace consistent with coherent	2025-07-01 13:25:36 -06:00
early_ioremap.c
execmem.c	mm: remove PMD alignment constraint in execmem_vmalloc()	2025-09-28 11:51:31 -07:00
fadvise.c
fail_page_alloc.c
failslab.c
filemap.c	treewide: include linux/pgalloc.h instead of asm/pgalloc.h	2025-11-16 17:28:25 -08:00
folio-compat.c
gup_test.c
gup_test.h
gup.c	mm: replace READ_ONCE() with standard page table accessors	2025-11-16 17:27:56 -08:00
highmem.c	mm: constify highmem related functions for improved const-correctness	2025-09-21 14:22:15 -07:00
hmm.c	mm: replace READ_ONCE() with standard page table accessors	2025-11-16 17:27:56 -08:00
huge_memory.c	treewide: include linux/pgalloc.h instead of asm/pgalloc.h	2025-11-16 17:28:25 -08:00
hugetlb_cgroup.c
hugetlb_cma.c	mm: hugetlb: directly pass order when allocate a hugetlb folio	2025-09-21 14:22:11 -07:00
hugetlb_cma.h	mm: hugetlb: directly pass order when allocate a hugetlb folio	2025-09-21 14:22:11 -07:00
hugetlb_vmemmap.c	treewide: include linux/pgalloc.h instead of asm/pgalloc.h	2025-11-16 17:28:25 -08:00
hugetlb_vmemmap.h
hugetlb.c	treewide: include linux/pgalloc.h instead of asm/pgalloc.h	2025-11-16 17:28:25 -08:00
hwpoison-inject.c	mm/hwpoison: decouple hwpoison_filter from mm/memory-failure.c	2025-09-21 14:22:21 -07:00
init-mm.c
internal.h	mm: introduce io_remap_pfn_range_[prepare, complete]()	2025-11-16 17:28:12 -08:00
interval_tree.c
ioremap.c
Kconfig	mm: handle poisoning of pfn without struct pages	2025-11-16 17:28:29 -08:00
Kconfig.debug
khugepaged.c	treewide: include linux/pgalloc.h instead of asm/pgalloc.h	2025-11-16 17:28:25 -08:00
kmemleak.c	mm: fix possible deadlock in kmemleak	2025-09-01 17:11:37 -07:00
ksm.c	ksm: replace function unmerge_ksm_pages with break_ksm	2025-11-16 17:28:28 -08:00
list_lru.c	mm, list_lru: refactor the locking code	2025-07-09 22:41:56 -07:00
maccess.c	mm: unexport globally copy_to_kernel_nofault	2025-07-09 22:42:22 -07:00
madvise.c	mm: clean up is_guard_pte_marker()	2025-10-03 16:42:43 -07:00
Makefile	mm: remove unused zpool layer	2025-09-21 14:21:59 -07:00
mapping_dirty_helpers.c	mm/dirty: replace READ_ONCE() with pudp_get()	2025-11-16 17:27:58 -08:00
memblock.c	kho: replace kho_preserve_phys() with kho_preserve_pages()	2025-10-07 13:48:55 -07:00
memcontrol-v1.c	mm/memcg: v1: account event registrations and drop world-writable cgroup.event_control	2025-09-21 14:22:26 -07:00
memcontrol-v1.h	memcg: move do_memsw_account() to CONFIG_MEMCG_V1	2025-03-21 22:03:11 -07:00
memcontrol.c	memcg: manually uninline __memcg_memory_event	2025-11-16 17:28:16 -08:00
memfd.c	mm/memfd: remove redundant casts	2025-09-21 14:22:00 -07:00
memory_hotplug.c	drivers/base/node: fold unregister_node() into unregister_one_node()	2025-11-16 17:28:03 -08:00
memory-failure.c	mm: handle poisoning of pfn without struct pages	2025-11-16 17:28:29 -08:00
memory-tiers.c	mm: fix some typos in mm module	2025-11-16 17:27:52 -08:00
memory.c	treewide: include linux/pgalloc.h instead of asm/pgalloc.h	2025-11-16 17:28:25 -08:00
mempolicy.c	mm: mprotect: convert to folio_can_map_prot_numa()	2025-11-16 17:28:03 -08:00
mempool.c	mm: mempool: fix crash in mempool_free() for zero-minimum pools	2025-08-02 12:06:13 -07:00
memremap.c	mm/memremap: remove unused get_dev_pagemap() parameter	2025-09-21 14:22:21 -07:00
memtest.c
migrate_device.c	treewide: remove MIGRATEPAGE_SUCCESS	2025-09-13 16:54:50 -07:00
migrate.c	mm/migrate, swap: drop usage of folio_index	2025-11-16 17:28:20 -08:00
mincore.c	mm, swap: use unified helper for swap cache look up	2025-09-21 14:22:22 -07:00
mlock.c	mm: folio_may_be_lru_cached() unless folio_test_large()	2025-09-13 13:05:36 -07:00
mm_init.c	drivers/base/node: fold register_node() into register_one_node()	2025-11-16 17:28:02 -08:00
mm_slot.h
mmap_lock.c	mm: change vma_start_read() to drop RCU lock on failure	2025-09-13 16:54:43 -07:00
mmap.c	mm: consistently use current->mm in mm_get_unmapped_area()	2025-11-16 17:27:57 -08:00
mmu_gather.c	treewide: include linux/pgalloc.h instead of asm/pgalloc.h	2025-11-16 17:28:25 -08:00
mmu_notifier.c	Update Christoph's Email address and make it consistent	2025-05-12 23:50:31 -07:00
mmzone.c	mm: introduce memdesc_flags_t	2025-09-13 16:55:07 -07:00
mprotect.c	mm: mprotect: convert to folio_can_map_prot_numa()	2025-11-16 17:28:03 -08:00
mremap.c	treewide: include linux/pgalloc.h instead of asm/pgalloc.h	2025-11-16 17:28:25 -08:00
mseal.c	mm/mseal: rework mseal apply logic	2025-08-02 12:06:09 -07:00
msync.c
nommu.c	mm/nommu: convert kobjsize() to folios	2025-09-13 16:54:46 -07:00
numa_emulation.c	mm: numa,memblock: Use SZ_1M macro to denote bytes to MB conversion	2025-08-20 16:31:23 +03:00
numa_memblks.c	mm: numa,memblock: Use SZ_1M macro to denote bytes to MB conversion	2025-08-20 16:31:23 +03:00
numa.c	mm/numa: remove unnecessary local variable in alloc_node_data()	2025-05-12 23:50:38 -07:00
oom_kill.c	mm/oom_kill.c: fix inverted check	2025-09-23 14:14:16 -07:00
page_alloc.c	mm/page_alloc: don't warn about large allocations with __GFP_NOFAIL	2025-11-16 17:28:29 -08:00
page_counter.c
page_ext.c	mm,page_ext: derive the node from the pfn	2025-07-13 16:38:16 -07:00
page_frag_cache.c
page_idle.c	mm: always call rmap_walk() on locked folios	2025-11-16 17:28:00 -08:00
page_io.c	mm, swap: tidy up swap device and cluster info helpers	2025-09-21 14:22:23 -07:00
page_isolation.c	mm/page_isolation: drop __folio_test_movable() check for large folios	2025-07-13 16:38:29 -07:00
page_owner.c	mm/page_owner: simplify zone iteration logic in init_early_allocated_pages()	2025-11-16 17:28:01 -08:00
page_poison.c
page_reporting.c
page_reporting.h
page_table_check.c	mm/page_table_check: Batch-check pmds/puds just like ptes	2025-05-09 13:43:07 +01:00
page_vma_mapped.c	mm/page_vma_mapped: track if the page is mapped across page table boundary	2025-09-28 11:51:29 -07:00
page-writeback.c	fuse update for 6.18	2025-10-03 12:48:18 -07:00
pagewalk.c	Summary of significant series in this pull request:	2025-10-02 18:18:33 -07:00
percpu-internal.h
percpu-km.c	mm/mm/percpu-km: drop nth_page() usage within single allocation	2025-09-21 14:22:04 -07:00
percpu-stats.c	mm: remove outdated filename comment in percpu-stats.c	2025-07-13 16:38:23 -07:00
percpu-vm.c	kmsan: remove hard-coded GFP_KERNEL flags	2025-11-16 17:27:54 -08:00
percpu.c	percpu: fix race on alloc failed warning limit	2025-09-08 23:45:10 -07:00
pgalloc-track.h
pgtable-generic.c	treewide: include linux/pgalloc.h instead of asm/pgalloc.h	2025-11-16 17:28:25 -08:00
process_vm_access.c
pt_reclaim.c	treewide: include linux/pgalloc.h instead of asm/pgalloc.h	2025-11-16 17:28:25 -08:00
ptdump.c	mm/ptdump: replace READ_ONCE() with standard page table accessors	2025-11-16 17:27:52 -08:00
readahead.c	readahead: add trace points	2025-09-21 14:22:28 -07:00
rmap.c	mm: always call rmap_walk() on locked folios	2025-11-16 17:28:00 -08:00
rodata_test.c
secretmem.c	mm: add vma_desc_size(), vma_desc_pages() helpers	2025-11-16 17:28:11 -08:00
shmem_quota.c
shmem.c	mm: shmem/tmpfs hugepage defaults config choice	2025-11-16 17:28:23 -08:00
show_mem.c	mm: re-enable kswapd when memory pressure subsides or demotion is toggled	2025-09-21 14:22:29 -07:00
shrinker_debug.c	mm/shrinker: fix name consistency issue in shrinker_debugfs_rename()	2025-03-17 00:05:40 -07:00
shrinker.c
shuffle.c
shuffle.h
slab_common.c	mm: fix some typos in mm module	2025-11-16 17:27:52 -08:00
slab.h	Summary of significant series in this pull request:	2025-10-02 18:18:33 -07:00
slub.c	mm: remove reference to destructor in comment in calculate_sizes()	2025-11-16 17:28:15 -08:00
sparse-vmemmap.c	mm: replace READ_ONCE() with standard page table accessors	2025-11-16 17:27:56 -08:00
sparse.c	mm: introduce memdesc_nid()	2025-09-13 16:55:07 -07:00
swap_cgroup.c	mm: swap_cgroup: remove double initialization of locals	2025-03-17 22:06:58 -07:00
swap_state.c	mm, swap: fix potential UAF issue for VMA readahead	2025-11-15 10:52:02 -08:00
swap_table.h	mm, swap: use a single page for swap table when the size fits	2025-09-21 14:22:25 -07:00
swap.c	mm: lru_add_drain_all() do local lru_add_drain() first	2025-09-21 14:22:32 -07:00
swap.h	mm/migrate, swap: drop usage of folio_index	2025-11-16 17:28:20 -08:00
swapfile.c	mm/swap: select swap device with default priority round robin	2025-11-16 17:28:27 -08:00
truncate.c	mm/truncate: unmap large folio on split failure	2025-11-09 21:19:43 -08:00
usercopy.c
userfaultfd.c	mm/userfaultfd: don't lock anon_vma when performing UFFDIO_MOVE	2025-11-16 17:28:00 -08:00
util.c	mm: add ability to take further action in vm_area_desc	2025-11-16 17:28:12 -08:00
vma_exec.c	mm/vma: use vmg->target to specify target VMA for new VMA merge	2025-07-09 22:42:11 -07:00
vma_init.c	Summary of significant series in this pull request:	2025-10-02 18:18:33 -07:00
vma_internal.h
vma.c	mm: add ability to take further action in vm_area_desc	2025-11-16 17:28:12 -08:00
vma.h	mm/vma: remove unused function, make internal functions static	2025-11-16 17:28:10 -08:00
vmalloc.c	mm/vmalloc: request large order pages from buddy allocator	2025-11-16 17:28:15 -08:00
vmpressure.c	memcg: convert memcg->socket_pressure to u64	2025-07-24 19:12:32 -07:00
vmscan.c	mm, swap: cleanup swap entry allocation parameter	2025-11-16 17:28:20 -08:00
vmstat.c	mm: vmstat: output reserved_highatomic and free_highatomic in zoneinfo	2025-11-16 17:28:26 -08:00
workingset.c	mm: introduce memdesc_flags_t	2025-09-13 16:55:07 -07:00
zpdesc.h	mm: zpdesc: minor naming and comment corrections	2025-09-21 14:21:59 -07:00
zsmalloc.c	mm: remove unused zpool layer	2025-09-21 14:21:59 -07:00
zswap.c	mm/zswap: s/red-black tree/xarray/	2025-11-16 17:27:57 -08:00