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Ankit Khushwaha 0384c8ea96 selftests/mm/uffd: initialize char variable to Null 
In "uffd-stress.c" & "uffd-unit-tests.c". address of char variable having
garbage value (uninitialized) is passed to 'write' syscall triggers
warning.

	uffd-stress.c:246:39: warning: variable 'c' is uninitialized when
	passed  as a const pointer argument here
	[-Wuninitialized-const-pointer]

	uffd-unit-tests.c:581:31: warning: variable 'c' is uninitialized
	when passed as a const pointer argument here
	[-Wuninitialized-const-pointer]

so the fix is to assign char variable to '\0' to prevent writing of
garbage value.

Link: https://lkml.kernel.org/r/20251126160830.52124-1-ankitkhushwaha.linux@gmail.com
Signed-off-by: Ankit Khushwaha <ankitkhushwaha.linux@gmail.com>
Reviewed-by: Mike Rapoport (Microsoft) <rppt@kernel.org>
Cc: Bill Wendling <morbo@google.com>
Cc: Justin Stitt <justinstitt@google.com>
Cc: Liam Howlett <liam.howlett@oracle.com>
Cc: Lorenzo Stoakes <lorenzo.stoakes@oracle.com>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Nathan Chancellor <nathan@kernel.org>
Cc: Peter Xu <peterx@redhat.com>
Cc: Shuah Khan <shuah@kernel.org>
Cc: Suren Baghdasaryan <surenb@google.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2025-11-29 10:41:09 -08:00
..
page_frag
…
.gitignore
selftests/mm: test that rmap behaves as expected
2025-09-13 16:55:13 -07:00
charge_reserved_hugetlb.sh
…
check_config.sh
…
compaction_test.c
…
config
selftests/mm: add configs to fix testcase failure
2025-06-19 20:48:02 -07:00
cow.c
selftest/mm: extract sz2ord function into vm_util.h
2025-09-13 16:55:06 -07:00
droppable.c
…
guard-regions.c
tools/testing/selftests/mm: add smaps visibility guard region test
2025-11-20 13:43:58 -08:00
gup_longterm.c
selftest/mm: skip if fallocate() is unsupported in gup_longterm
2025-07-09 22:42:11 -07:00
gup_test.c
selftests/mm: gup_test: fix comment regarding origin of FOLL_WRITE
2025-11-24 15:08:53 -08:00
hmm-tests.c
selftests/mm/hmm-tests: new throughput tests including THP
2025-11-24 15:08:49 -08:00
hugepage-mmap.c
…
hugepage-mremap.c
selftests/mm: skip hugepage-mremap test if userfaultfd unavailable
2025-09-13 16:55:04 -07:00
hugepage-shm.c
…
hugepage-vmemmap.c
…
hugetlb_dio.c
…
hugetlb_fault_after_madv.c
…
hugetlb_madv_vs_map.c
…
hugetlb_reparenting_test.sh
selftests/mm: restore default nr_hugepages value during cleanup in hugetlb_reparenting_test.sh
2025-05-11 17:48:29 -07:00
hugetlb-madvise.c
selftests/mm: fix FORCE_READ to read input value correctly
2025-08-27 22:45:42 -07:00
hugetlb-read-hwpoison.c
…
hugetlb-soft-offline.c
…
khugepaged.c
selftests/mm: remove PROT_EXEC req from file-collapse tests
2025-09-21 14:22:31 -07:00
ksm_functional_tests.c
selftests: update ksm inheritance tests for prctl fork/exec
2025-11-16 17:27:55 -08:00
ksm_tests.c
ksm_tests: skip hugepage test when Transparent Hugepages are disabled
2025-07-09 22:42:23 -07:00
madv_populate.c
selftests/mm: skip soft-dirty tests when CONFIG_MEM_SOFT_DIRTY is disabled
2025-09-23 14:14:16 -07:00
Makefile
selftests/mm: add -Wunreachable-code and fix warnings
2025-09-21 14:22:34 -07:00
map_fixed_noreplace.c
selftests/mm: deduplicate second mmap() of 5*PAGE_SIZE at base
2025-05-22 14:55:37 -07:00
map_hugetlb.c
…
map_populate.c
…
mdwe_test.c
…
memfd_secret.c
…
merge.c
tools/testing/selftests: add mremap() unfaulted/faulted test cases
2025-07-13 16:38:25 -07:00
migration.c
selftests/mm: fix FORCE_READ to read input value correctly
2025-08-27 22:45:42 -07:00
mkdirty.c
…
mlock2-tests.c
selftests/mm: deduplicate test logging in test_mlock_lock()
2025-05-31 22:46:08 -07:00
mlock2.h
…
mlock-random-test.c
…
mrelease_test.c
…
mremap_dontunmap.c
…
mremap_test.c
selftest/mm: fix pointer comparison in mremap_test
2025-11-20 13:43:57 -08:00
mseal_helpers.h
…
mseal_test.c
…
on-fault-limit.c
…
pagemap_ioctl.c
selftests/mm: use calloc instead of malloc in pagemap_ioctl.c
2025-09-13 16:55:17 -07:00
pfnmap.c
selftests/mm: pass filename as input param to VM_PFNMAP tests
2025-09-13 16:54:43 -07:00
pkey_sighandler_tests.c
selftests/mm: add -Wunreachable-code and fix warnings
2025-09-21 14:22:34 -07:00
pkey_util.c
selftests/mm: fix build break when compiling pkey_util.c
2025-05-07 23:39:41 -07:00
pkey-arm64.h
…
pkey-helpers.h
selftests: centralise maybe-unused definition in kselftest.h
2025-09-13 16:55:16 -07:00
pkey-powerpc.h
selftests/mm: fix a build failure on powerpc
2025-05-07 23:39:41 -07:00
pkey-x86.h
…
prctl_thp_disable.c
selftests: prctl: introduce tests for disabling THPs except for madvise
2025-09-13 16:55:06 -07:00
process_madv.c
selftests/mm: add process_madvise() tests
2025-08-02 12:06:08 -07:00
protection_keys.c
selftests/mm: protection_keys: fix dead code
2025-09-21 14:22:34 -07:00
rmap.c
selftests/mm: test that rmap behaves as expected
2025-09-13 16:55:13 -07:00
run_vmtests.sh
selftests/mm: gup_tests: option to GUP all pages in a single call
2025-09-21 14:22:33 -07:00
settings
selftests/mm: increase timeout from 180 to 900 seconds
2025-06-19 20:48:01 -07:00
soft-dirty.c
testing/selftests/mm: add soft-dirty merge self-test
2025-11-20 13:44:01 -08:00
split_huge_page_test.c
selftests/mm: add -Wunreachable-code and fix warnings
2025-09-21 14:22:34 -07:00
test_hmm.sh
…
test_page_frag.sh
…
test_vmalloc.sh
kselftest: mm: fix typos in test_vmalloc.sh
2025-09-13 16:55:16 -07:00
thp_settings.c
selftests: prctl: introduce tests for disabling THPs completely
2025-09-13 16:55:06 -07:00
thp_settings.h
selftests: prctl: introduce tests for disabling THPs completely
2025-09-13 16:55:06 -07:00
thuge-gen.c
selftests/mm: skip thuge-gen test if system is not setup properly
2025-09-13 16:55:04 -07:00
transhuge-stress.c
…
uffd-common.c
selftests/mm/uffd: remove static address usage in shmem_allocate_area()
2025-11-20 13:44:00 -08:00
uffd-common.h
selftests/mm/uffd: refactor non-composite global vars into struct
2025-09-21 14:21:59 -07:00
uffd-stress.c
selftests/mm/uffd: initialize char variable to Null
2025-11-29 10:41:09 -08:00
uffd-unit-tests.c
selftests/mm/uffd: initialize char variable to Null
2025-11-29 10:41:09 -08:00
uffd-wp-mremap.c
selftests/mm/uffd: refactor non-composite global vars into struct
2025-09-21 14:21:59 -07:00
va_high_addr_switch.c
selftests/mm: fix va_high_addr_switch.sh failure on x86_64
2025-09-21 14:22:29 -07:00
va_high_addr_switch.sh
selftests/mm: alloc hugepages in va_high_addr_switch test
2025-09-21 14:22:28 -07:00
virtual_address_range.c
selftests/mm: add support to test 4PB VA on PPC64
2025-09-13 16:55:03 -07:00
vm_util.c
tools/testing/selftests/mm: add smaps visibility guard region test
2025-11-20 13:43:58 -08:00
vm_util.h
tools/testing/selftests/mm: add smaps visibility guard region test
2025-11-20 13:43:58 -08:00
write_hugetlb_memory.sh
…
write_to_hugetlbfs.c
…