Kees Cook d68627697d 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 11:33:32 +02:00
..
kasan	panic: Consolidate open-coded panic_on_warn checks	2023-02-06 07:46:34 +01:00
backing-dev.c	mm: bdi: initialize bdi_min_ratio when bdi is unregistered	2021-12-14 10:16:54 +01:00
balloon_compaction.c	virtio_balloon: fix deadlock on OOM	2018-10-13 09:27:30 +02:00
bootmem.c	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
cleancache.c	fs: switch ->s_uuid to uuid_t	2017-06-05 16:59:12 +02:00
cma_debug.c	mm/cma_debug.c: fix the break condition in cma_maxchunk_get()	2019-06-15 11:54:51 +02:00
cma.c	mm/cma.c: fail if fixed declaration can't be honored	2019-08-06 19:05:23 +02:00
cma.h	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
compaction.c	mm/compaction.c: clear total_{migrate,free}_scanned before scanning a new zone	2019-10-05 12:48:13 +02:00
debug_page_ref.c	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
debug.c	mm: get rid of vmacache_flush_all() entirely	2018-09-19 22:43:48 +02:00
dmapool.c	lib/vsprintf.c: remove %Z support	2017-02-27 18:43:47 -08:00
early_ioremap.c	mm/early_ioremap: Fix boot hang with earlyprintk=efi,keep	2018-02-25 11:08:03 +01:00
fadvise.c	mm/fadvise.c: fix signed overflow UBSAN complaint	2018-09-15 09:45:28 +02:00
failslab.c	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
filemap.c	mm: fs: initialize fsdata passed to write_begin/write_end interface	2022-11-25 17:36:55 +01:00
frame_vector.c	v4l2: don't fall back to follow_pfn() if pin_user_pages_fast() fails	2022-12-08 11:16:33 +01:00
frontswap.c	treewide: Remove uninitialized_var() usage	2023-08-11 11:33:32 +02:00
gup.c	gup: document and work around "COW can break either way" issue	2021-04-28 12:08:42 +02:00
highmem.c	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
hmm.c	mm, hmm: mark hmm_devmem_{add, add_resource} EXPORT_SYMBOL_GPL	2019-01-13 10:01:02 +01:00
huge_memory.c	mm/huge_memory.c: don't discard hugepage if other processes are mapping it	2021-07-20 16:17:41 +02:00
hugetlb_cgroup.c	mm: hugetlb: switch to css_tryget() in hugetlb_cgroup_charge_cgroup()	2019-11-20 17:59:33 +01:00
hugetlb.c	mm,hugetlb: take hugetlb_lock before decrementing h->resv_huge_pages	2022-11-03 23:50:54 +09:00
hwpoison-inject.c	mm: hwpoison: call shake_page() unconditionally	2017-05-03 15:52:12 -07:00
init-mm.c	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
internal.h	mm/thp: fix vma_address() if virtual address below file offset	2021-07-11 12:48:10 +02:00
interval_tree.c	lib/interval_tree: fast overlap detection	2017-09-08 18:26:49 -07:00
Kconfig	mm/hmm: select mmu notifier when selecting HMM	2019-06-15 11:54:51 +02:00
Kconfig.debug	kmemcheck: rip it out	2018-02-22 15:42:24 +01:00
khugepaged.c	mm/khugepaged: invoke MMU notifiers in shmem/file collapse paths	2023-01-18 09:26:04 +01:00
kmemleak-test.c
kmemleak.c	Revert "mm: kmemleak: take a full lowmem check in kmemleak_*_phys()"	2022-09-15 12:23:51 +02:00
ksm.c	treewide: Remove uninitialized_var() usage	2023-08-11 11:33:32 +02:00
list_lru.c	mm/list_lru.c: fix memory leak in __memcg_init_list_lru_node	2019-06-19 08:20:54 +02:00
maccess.c	uaccess: Add non-pagefault user-space write function	2020-09-09 19:03:11 +02:00
madvise.c	mm: madvise(MADV_DODUMP): allow hugetlbfs pages	2018-10-10 08:54:22 +02:00
Makefile	kmemcheck: rip it out	2018-02-22 15:42:24 +01:00
memblock.c	memblock: use kfree() to release kmalloced memblock regions	2022-03-02 11:34:00 +01:00
memcontrol.c	treewide: Remove uninitialized_var() usage	2023-08-11 11:33:32 +02:00
memory_hotplug.c	mm/memory_hotplug: use "unsigned long" for PFN in zone_for_pfn_range()	2021-09-22 11:45:34 +02:00
memory-failure.c	mm/memory-failure: make sure wait for page writeback in memory_failure	2021-06-30 08:48:48 -04:00
memory.c	mm/khugepaged: fix GUP-fast interaction by sending IPI	2023-01-18 09:26:04 +01:00
mempolicy.c	treewide: Remove uninitialized_var() usage	2023-08-11 11:33:32 +02:00
mempool.c	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
memtest.c	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
migrate.c	mm/migrate_device.c: flush TLB while holding PTL	2022-10-26 13:16:50 +02:00
mincore.c	mm/mincore.c: make mincore() more conservative	2019-05-21 18:50:16 +02:00
mlock.c	mm/mlock.c: change count_mm_mlocked_page_nr return type	2019-07-10 09:54:36 +02:00
mm_init.c
mmap.c	mm: Fix TLB flush for not-first PFNMAP mappings in unmap_region()	2022-09-20 11:51:30 +02:00
mmu_context.c	sched/headers: Prepare to move the task_lock()/unlock() APIs to <linux/sched/task.h>	2017-03-02 08:42:38 +01:00
mmu_notifier.c	mm/mmu_notifier: use hlist_add_head_rcu()	2019-07-31 07:28:56 +02:00
mmzone.c	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
mprotect.c	mm, numa: fix bad pmd by atomically check for pmd_trans_huge when marking page tables prot_numa	2020-03-11 18:03:02 +01:00
mremap.c	mmmremap.c: avoid pointless invalidate_range_start/end on mremap(old_size=0)	2022-04-20 09:08:29 +02:00
msync.c	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
nobootmem.c	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
nommu.c	x86/mm: split vmalloc_sync_all()	2020-04-02 16:34:20 +02:00
oom_kill.c	mm, oom: do not trigger out_of_memory from the #PF	2021-11-26 11:40:37 +01:00
page_alloc.c	mm/page_alloc: fix potential deadlock on zonelist_update_seq seqlock	2023-05-17 11:11:51 +02:00
page_counter.c	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
page_ext.c	mm/page_ext.c: fix an imbalance with kmemleak	2019-04-05 22:31:27 +02:00
page_idle.c	mm/page_idle.c: fix oops because end_pfn is larger than max_pfn	2019-07-03 13:15:59 +02:00
page_io.c	swap: fix swapfile read/write offset	2021-03-07 11:27:46 +01:00
page_isolation.c	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
page_owner.c	mm/page_owner.c: remove drain_all_pages from init_early_allocated_pages	2020-07-31 16:44:45 +02:00
page_poison.c	page_poison: play nicely with KASAN	2019-04-05 22:31:28 +02:00
page_vma_mapped.c	mm/thp: another PVMW_SYNC fix in page_vma_mapped_walk()	2021-07-11 12:48:12 +02:00
page-writeback.c	mm/page-writeback.c: avoid potential division by zero in wb_min_max_ratio()	2020-01-23 08:20:32 +01:00
pagewalk.c	mm: pagewalk: fix termination condition in walk_pte_range()	2020-10-01 13:12:32 +02:00
percpu-internal.h	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
percpu-km.c	percpu: convert spin_lock_irq to spin_lock_irqsave.	2019-02-12 19:46:05 +01:00
percpu-stats.c	percpu: fix starting offset for chunk statistics traversal	2017-09-27 14:45:57 -07:00
percpu-vm.c	percpu: add __GFP_NORETRY semantics to the percpu balancing path	2018-04-08 14:26:29 +02:00
percpu.c	treewide: Remove uninitialized_var() usage	2023-08-11 11:33:32 +02:00
pgtable-generic.c	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
process_vm_access.c	sched/headers: Prepare for new header dependencies before moving code to <linux/sched/mm.h>	2017-03-02 08:42:28 +01:00
quicklist.c	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
readahead.c	readahead: stricter check for bdi io_pages	2018-09-09 19:55:53 +02:00
rmap.c	mm/rmap: Fix anon_vma->degree ambiguity leading to double-reuse	2022-09-05 10:25:06 +02:00
rodata_test.c	mm: fix RODATA_TEST failure "rodata_test: test data was not read only"	2017-10-03 17:54:24 -07:00
shmem.c	memfd: fix F_SEAL_WRITE after shmem huge page allocated	2022-03-08 19:01:58 +01:00
slab_common.c	mm/slab: use memzero_explicit() in kzfree()	2020-06-30 15:38:08 -04:00
slab.c	mm/slab.c: fix an infinite loop in leaks_show()	2019-06-15 11:54:51 +02:00
slab.h	mm: kmemleak: slob: respect SLAB_NOLEAKTRACE flag	2021-11-26 11:40:40 +01:00
slob.c	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
slub.c	treewide: Remove uninitialized_var() usage	2023-08-11 11:33:32 +02:00
sparse-vmemmap.c	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
sparse.c	mm: sections are not offlined during memory hotremove	2018-05-16 10:10:27 +02:00
swap_cgroup.c	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
swap_slots.c	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
swap_state.c	mm/swap_state: fix a data race in swapin_nr_pages	2020-10-01 13:12:46 +02:00
swap.c	treewide: Remove uninitialized_var() usage	2023-08-11 11:33:32 +02:00
swapfile.c	mm/swap: fix swap_info_struct race between swapoff and get_swap_pages()	2023-04-20 12:02:11 +02:00
truncate.c	mm: cleancache: fix corruption on missed inode invalidation	2018-12-08 13:03:40 +01:00
usercopy.c	usercopy: Avoid HIGHMEM pfn warning	2019-10-11 18:18:34 +02:00
userfaultfd.c	mm: userfaultfd: fix missing cache flush in mcopy_atomic_pte() and __mcopy_atomic()	2022-05-15 19:40:27 +02:00
util.c	mm: kvmalloc does not fallback to vmalloc for incompatible gfp flags	2023-02-06 07:46:35 +01:00
vmacache.c	mm: get rid of vmacache_flush_all() entirely	2018-09-19 22:43:48 +02:00
vmalloc.c	mm/vmalloc.c: don't dereference possible NULL pointer in __vunmap()	2020-06-03 08:18:11 +02:00
vmpressure.c	mm, vmpressure: pass-through notification support	2017-07-10 16:32:31 -07:00
vmscan.c	mm: memcg: make sure memory.events is uptodate when waking pollers	2021-04-07 12:47:03 +02:00
vmstat.c	mm, vmstat: drop zone->lock in /proc/pagetypeinfo	2021-06-03 08:36:10 +02:00
workingset.c	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
z3fold.c	z3fold: fix possible reclaim races	2018-12-01 09:42:54 +01:00
zbud.c
zpool.c
zsmalloc.c	zsmalloc: fix races between asynchronous zspage free and page migration	2022-06-06 08:20:57 +02:00
zswap.c	zswap: re-check zswap_is_full() after do zswap_shrink()	2018-09-05 09:26:30 +02:00