The patch titled Subject: fs/cramfs/inode.c: initialize file_ra_state has been added to the -mm mm-hotfixes-unstable branch. Its filename is fs-cramfs-inodec-initialize-file_ra_state.patch
This patch will shortly appear at https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches...
This patch will later appear in the mm-hotfixes-unstable branch at git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
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------------------------------------------------------ From: Andrew Morton akpm@linux-foundation.org Subject: fs/cramfs/inode.c: initialize file_ra_state Date: Sun Feb 26 12:31:11 PM PST 2023
file_ra_state_init() assumes that the file_ra_state has been zeroed out. Fixes a KMSAN used-unintialized issue (at least).
Fixes: cf948cbc35e80 ("cramfs: read_mapping_page() is synchronous") Reported-by: syzbot syzbot+8ce7f8308d91e6b8bbe2@syzkaller.appspotmail.com Link: https://lkml.kernel.org/r/0000000000008f74e905f56df987@google.com Cc: Matthew Wilcox willy@infradead.org Cc: Nicolas Pitre nico@fluxnic.net Cc: stable@vger.kernel.org Signed-off-by: Andrew Morton akpm@linux-foundation.org ---
--- a/fs/cramfs/inode.c~fs-cramfs-inodec-initialize-file_ra_state +++ b/fs/cramfs/inode.c @@ -183,7 +183,7 @@ static void *cramfs_blkdev_read(struct super_block *sb, unsigned int offset, unsigned int len) { struct address_space *mapping = sb->s_bdev->bd_inode->i_mapping; - struct file_ra_state ra; + struct file_ra_state ra = {}; struct page *pages[BLKS_PER_BUF]; unsigned i, blocknr, buffer; unsigned long devsize; _
Patches currently in -mm which might be from akpm@linux-foundation.org are
fs-cramfs-inodec-initialize-file_ra_state.patch mm-page_alloc-reduce-page-alloc-free-sanity-checks-checkpatch-fixes.patch mm-page_alloc-reduce-page-alloc-free-sanity-checks-fix.patch mm-userfaultfd-support-wp-on-multiple-vmas-fix.patch