Kees Cook b7e389235c treewide: Remove uninitialized_var() usage ... commit 3f649ab728 upstream. Using uninitialized_var() is dangerous as it papers over real bugs[1] (or can in the future), and suppresses unrelated compiler warnings (e.g. "unused variable"). If the compiler thinks it is uninitialized, either simply initialize the variable or make compiler changes. In preparation for removing[2] the[3] macro[4], remove all remaining needless uses with the following script: git grep '\buninitialized_var\b' | cut -d: -f1 | sort -u | \ xargs perl -pi -e \ 's/\buninitialized_var\(([^\)]+)\)/\1/g; s:\s*/\* (GCC be quiet|to make compiler happy) \*/$::g;' drivers/video/fbdev/riva/riva_hw.c was manually tweaked to avoid pathological white-space. No outstanding warnings were found building allmodconfig with GCC 9.3.0 for x86_64, i386, arm64, arm, powerpc, powerpc64le, s390x, mips, sparc64, alpha, and m68k. [1] https://lore.kernel.org/lkml/20200603174714.192027-1-glider@google.com/ [2] https://lore.kernel.org/lkml/CA+55aFw+Vbj0i=1TGqCR5vQkCzWJ0QxK6CernOU6eedsudAixw@mail.gmail.com/ [3] https://lore.kernel.org/lkml/CA+55aFwgbgqhbp1fkxvRKEpzyR5J8n1vKT1VZdz9knmPuXhOeg@mail.gmail.com/ [4] https://lore.kernel.org/lkml/CA+55aFz2500WfbKXAx8s67wrm9=yVJu65TpLgN_ybYNv0VEOKA@mail.gmail.com/ Reviewed-by: Leon Romanovsky <leonro@mellanox.com> # drivers/infiniband and mlx4/mlx5 Acked-by: Jason Gunthorpe <jgg@mellanox.com> # IB Acked-by: Kalle Valo <kvalo@codeaurora.org> # wireless drivers Reviewed-by: Chao Yu <yuchao0@huawei.com> # erofs Signed-off-by: Kees Cook <keescook@chromium.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2023-08-11 11:45:01 +02:00
..
kasan	panic: Consolidate open-coded panic_on_warn checks	2023-02-06 07:49:46 +01:00
backing-dev.c	mm: bdi: initialize bdi_min_ratio when bdi is unregistered	2021-12-14 10:18:05 +01:00
balloon_compaction.c
bootmem.c
cleancache.c
cma.c
cma.h
cma_debug.c
compaction.c	mm/compaction.c: clear total_{migrate,free}_scanned before scanning a new zone	2019-10-05 13:10:13 +02:00
debug.c
debug_page_ref.c
dmapool.c
early_ioremap.c
fadvise.c
failslab.c
filemap.c	mm: fs: initialize fsdata passed to write_begin/write_end interface	2022-11-25 17:40:29 +01:00
frame_vector.c	v4l2: don't fall back to follow_pfn() if pin_user_pages_fast() fails	2022-12-08 11:18:32 +01:00
frontswap.c	treewide: Remove uninitialized_var() usage	2023-08-11 11:45:01 +02:00
gup.c	gup: document and work around "COW can break either way" issue	2021-04-28 13:16:51 +02:00
gup_benchmark.c	mm/gup_benchmark.c: prevent integer overflow in ioctl	2019-12-01 09:17:07 +01:00
highmem.c
hmm.c	mm/memory_hotplug: shrink zones when offlining memory	2020-01-29 16:43:27 +01:00
huge_memory.c	mm/huge_memory.c: don't discard hugepage if other processes are mapping it	2021-07-20 16:15:58 +02:00
hugetlb.c	mm,hugetlb: take hugetlb_lock before decrementing h->resv_huge_pages	2022-11-03 23:52:29 +09:00
hugetlb_cgroup.c	mm: hugetlb: switch to css_tryget() in hugetlb_cgroup_charge_cgroup()	2019-11-20 18:45:20 +01:00
hwpoison-inject.c
init-mm.c
internal.h	mm/thp: fix vma_address() if virtual address below file offset	2021-07-11 12:49:28 +02:00
interval_tree.c
Kconfig
Kconfig.debug
khugepaged.c	mm/khugepaged: invoke MMU notifiers in shmem/file collapse paths	2023-01-18 11:29:59 +01:00
kmemleak-test.c
kmemleak.c	Revert "mm: kmemleak: take a full lowmem check in kmemleak_*_phys()"	2022-09-15 12:17:02 +02:00
ksm.c	treewide: Remove uninitialized_var() usage	2023-08-11 11:45:01 +02:00
list_lru.c	mm: list_lru: set shrinker map bit when child nr_items is not zero	2020-12-11 13:25:02 +01:00
maccess.c	uaccess: Add non-pagefault user-space write function	2020-09-09 19:04:29 +02:00
madvise.c
Makefile
memblock.c	memblock: use kfree() to release kmalloced memblock regions	2022-03-02 11:38:14 +01:00
memcontrol.c	treewide: Remove uninitialized_var() usage	2023-08-11 11:45:01 +02:00
memfd.c	memfd: fix F_SEAL_WRITE after shmem huge page allocated	2022-03-08 19:04:10 +01:00
memory-failure.c	mm/memory-failure: make sure wait for page writeback in memory_failure	2021-06-30 08:48:14 -04:00
memory.c	mm/khugepaged: fix GUP-fast interaction by sending IPI	2023-01-18 11:29:59 +01:00
memory_hotplug.c	mm/memory_hotplug: use "unsigned long" for PFN in zone_for_pfn_range()	2021-09-22 11:48:12 +02:00
mempolicy.c	treewide: Remove uninitialized_var() usage	2023-08-11 11:45:01 +02:00
mempool.c
memtest.c
migrate.c	mm/migrate_device.c: flush TLB while holding PTL	2022-10-05 10:36:44 +02:00
mincore.c
mlock.c
mm_init.c
mmap.c	mm: Fix TLB flush for not-first PFNMAP mappings in unmap_region()	2022-09-20 12:26:48 +02:00
mmu_context.c
mmu_notifier.c
mmzone.c
mprotect.c	mm, numa: fix bad pmd by atomically check for pmd_trans_huge when marking page tables prot_numa	2020-03-11 14:15:00 +01:00
mremap.c	mmmremap.c: avoid pointless invalidate_range_start/end on mremap(old_size=0)	2022-04-15 14:15:05 +02:00
msync.c
nobootmem.c
nommu.c	x86/mm: split vmalloc_sync_all()	2020-03-25 08:06:13 +01:00
oom_kill.c	mm, oom: do not trigger out_of_memory from the #PF	2021-11-26 11:36:17 +01:00
page-writeback.c	mm/page-writeback.c: avoid potential division by zero in wb_min_max_ratio()	2020-01-23 08:21:31 +01:00
page_alloc.c	mm/page_alloc: fix potential deadlock on zonelist_update_seq seqlock	2023-05-17 11:13:28 +02:00
page_counter.c	mm/page_counter.c: fix protection usage propagation	2020-08-21 11:05:33 +02:00
page_ext.c
page_idle.c
page_io.c	mm: fix unexpected zeroed page mapping with zram swap	2022-05-12 12:20:25 +02:00
page_isolation.c
page_owner.c	mm/page_owner: don't access uninitialized memmaps when reading /proc/pagetypeinfo	2019-10-29 09:19:58 +01:00
page_poison.c
page_vma_mapped.c	mm/thp: another PVMW_SYNC fix in page_vma_mapped_walk()	2021-07-11 12:49:30 +02:00
pagewalk.c	mm: pagewalk: fix termination condition in walk_pte_range()	2020-10-01 13:14:32 +02:00
percpu-internal.h
percpu-km.c
percpu-stats.c
percpu-vm.c
percpu.c	treewide: Remove uninitialized_var() usage	2023-08-11 11:45:01 +02:00
pgtable-generic.c	mm/thp: fix __split_huge_pmd_locked() on shmem migration entry	2021-07-11 12:49:27 +02:00
process_vm_access.c
quicklist.c
readahead.c
rmap.c	mm/rmap: Fix anon_vma->degree ambiguity leading to double-reuse	2022-09-05 10:26:34 +02:00
rodata_test.c
shmem.c	shmem: fix a race between shmem_unused_huge_shrink and shmem_evict_inode	2022-01-27 09:04:16 +01:00
slab.c
slab.h	mm: kmemleak: slob: respect SLAB_NOLEAKTRACE flag	2021-11-26 11:36:23 +01:00
slab_common.c	mm: slab: fix kmem_cache_create failed when sysfs node not destroyed	2021-07-28 11:13:44 +02:00
slob.c
slub.c	treewide: Remove uninitialized_var() usage	2023-08-11 11:45:01 +02:00
sparse-vmemmap.c
sparse.c	mm/sparse: add the missing sparse_buffer_fini() in error branch	2021-05-22 10:59:38 +02:00
swap.c	treewide: Remove uninitialized_var() usage	2023-08-11 11:45:01 +02:00
swap_cgroup.c
swap_slots.c
swap_state.c	mm/swap_state: fix a data race in swapin_nr_pages	2020-10-01 13:14:47 +02:00
swapfile.c	mm/swap: fix swap_info_struct race between swapoff and get_swap_pages()	2023-04-20 12:04:39 +02:00
truncate.c	mm/thp: unmap_mapping_page() to fix THP truncate_cleanup_page()	2021-07-11 12:49:28 +02:00
usercopy.c	mm/usercopy: return 1 from hardened_usercopy __setup() handler	2022-04-15 14:14:59 +02:00
userfaultfd.c	mm: userfaultfd: fix missing cache flush in mcopy_atomic_pte() and __mcopy_atomic()	2022-05-15 19:41:58 +02:00
util.c	random: move randomize_page() into mm where it belongs	2022-06-25 11:49:12 +02:00
vmacache.c
vmalloc.c	mm/vmalloc.c: don't dereference possible NULL pointer in __vunmap()	2020-06-03 08:19:49 +02:00
vmpressure.c	mm/vmpressure.c: fix a signedness bug in vmpressure_register_event()	2019-10-17 13:45:19 -07:00
vmscan.c	mm/vmscan.c: fix data races using kswapd_classzone_idx	2020-10-01 13:14:41 +02:00
vmstat.c	mm, vmstat: drop zone->lock in /proc/pagetypeinfo	2021-06-03 08:38:02 +02:00
workingset.c
z3fold.c
zbud.c
zpool.c
zsmalloc.c	zsmalloc: fix races between asynchronous zspage free and page migration	2022-06-06 08:24:21 +02:00
zswap.c