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authorLinus Torvalds <torvalds@linux-foundation.org>2022-11-12 02:18:42 +0100
committerLinus Torvalds <torvalds@linux-foundation.org>2022-11-12 02:18:42 +0100
commitd7c2b1f64e44c98206752a1599b0203ae5e92f27 (patch)
treeb731a42777507fd3dbd9e5341c13685db40bc58c /Documentation
parentMerge tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm6... (diff)
parentdocs: kmsan: fix formatting of "Example report" (diff)
downloadlinux-d7c2b1f64e44c98206752a1599b0203ae5e92f27.tar.xz
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Merge tag 'mm-hotfixes-stable-2022-11-11' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
Pull misc hotfixes from Andrew Morton: "22 hotfixes. Eight are cc:stable and the remainder address issues which were introduced post-6.0 or which aren't considered serious enough to justify a -stable backport" * tag 'mm-hotfixes-stable-2022-11-11' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (22 commits) docs: kmsan: fix formatting of "Example report" mm/damon/dbgfs: check if rm_contexts input is for a real context maple_tree: don't set a new maximum on the node when not reusing nodes maple_tree: fix depth tracking in maple_state arch/x86/mm/hugetlbpage.c: pud_huge() returns 0 when using 2-level paging fs: fix leaked psi pressure state nilfs2: fix use-after-free bug of ns_writer on remount x86/traps: avoid KMSAN bugs originating from handle_bug() kmsan: make sure PREEMPT_RT is off Kconfig.debug: ensure early check for KMSAN in CONFIG_KMSAN_WARN x86/uaccess: instrument copy_from_user_nmi() kmsan: core: kmsan_in_runtime() should return true in NMI context mm: hugetlb_vmemmap: include missing linux/moduleparam.h mm/shmem: use page_mapping() to detect page cache for uffd continue mm/memremap.c: map FS_DAX device memory as decrypted Partly revert "mm/thp: carry over dirty bit when thp splits on pmd" nilfs2: fix deadlock in nilfs_count_free_blocks() mm/mmap: fix memory leak in mmap_region() hugetlbfs: don't delete error page from pagecache maple_tree: reorganize testing to restore module testing ...
Diffstat (limited to 'Documentation')
-rw-r--r--Documentation/dev-tools/kmsan.rst1
1 files changed, 1 insertions, 0 deletions
diff --git a/Documentation/dev-tools/kmsan.rst b/Documentation/dev-tools/kmsan.rst
index 2a53a801198c..55fa82212eb2 100644
--- a/Documentation/dev-tools/kmsan.rst
+++ b/Documentation/dev-tools/kmsan.rst
@@ -67,6 +67,7 @@ uninitialized in the local variable, as well as the stack where the value was
copied to another memory location before use.
A use of uninitialized value ``v`` is reported by KMSAN in the following cases:
+
- in a condition, e.g. ``if (v) { ... }``;
- in an indexing or pointer dereferencing, e.g. ``array[v]`` or ``*v``;
- when it is copied to userspace or hardware, e.g. ``copy_to_user(..., &v, ...)``;