kernel/linux.git/fs/ntfs3/bitmap.c, branch v6.1.168

fs/ntfs3: Fix a resource leak bug in wnd_extend()

2025-10-19T14:23:13+00:00

commit d68318471aa2e16222ebf492883e05a2d72b9b17 upstream. Add put_bh() to decrease the refcount of 'bh' after the job is finished, preventing a resource leak. Fixes: 3f3b442b5ad2 ("fs/ntfs3: Add bitmap") Cc: stable@vger.kernel.org Signed-off-by: Haoxiang Li Signed-off-by: Konstantin Komarov Signed-off-by: Greg Kroah-Hartman

fs/ntfs3: Use kvfree to free memory allocated by kvmalloc

2024-09-18T17:23:04+00:00

commit ddb17dc880eeaac37b5a6e984de07b882de7d78d upstream. Signed-off-by: Konstantin Komarov Signed-off-by: Greg Kroah-Hartman

fs/ntfs3: add prefix to bitmap_size() and use BITS_TO_U64()

2024-08-29T15:30:14+00:00

commit 3f5ef5109f6a054ce58b3bec7214ed76c9cc269f upstream. bitmap_size() is a pretty generic name and one may want to use it for a generic bitmap API function. At the same time, its logic is NTFS-specific, as it aligns to the sizeof(u64), not the sizeof(long) (although it uses ideologically right ALIGN() instead of division). Add the prefix 'ntfs3_' used for that FS (not just 'ntfs_' to not mix it with the legacy module) and use generic BITS_TO_U64() while at it. Suggested-by: Yury Norov # BITS_TO_U64() Reviewed-by: Przemek Kitszel Reviewed-by: Yury Norov Signed-off-by: Alexander Lobakin Signed-off-by: David S. Miller Signed-off-by: Greg Kroah-Hartman

fs/ntfs3: Missed error return

2024-08-03T06:49:28+00:00

[ Upstream commit 2cbbd96820255fff4f0ad1533197370c9ccc570b ] Fixes: 3f3b442b5ad2 ("fs/ntfs3: Add bitmap") Signed-off-by: Konstantin Komarov Signed-off-by: Sasha Levin

fs/ntfs3: Use kvmalloc instead of kmalloc(... __GFP_NOWARN)

2023-11-08T13:10:58+00:00

[ Upstream commit fc471e39e38fea6677017cbdd6d928088a59fc67 ] Signed-off-by: Konstantin Komarov Signed-off-by: Sasha Levin

fs/ntfs3: Refactoring of various minor issues

2023-05-17T09:53:51+00:00

commit 6827d50b2c430c329af442b64c9176d174f56521 upstream. Removed unused macro. Changed null pointer checking. Fixed inconsistent indenting. Signed-off-by: Konstantin Komarov Cc: Rudi Heitbaum Signed-off-by: Greg Kroah-Hartman

fs/ntfs3: Use __GFP_NOWARN allocation at wnd_init()

2023-01-04T10:28:57+00:00

[ Upstream commit 0d0f659bf713662fabed973f9996b8f23c59ca51 ] syzbot is reporting too large allocation at wnd_init() [1], for a crafted filesystem can become wnd->nwnd close to UINT_MAX. Add __GFP_NOWARN in order to avoid too large allocation warning, than exhausting memory by using kvcalloc(). Link: https://syzkaller.appspot.com/bug?extid=fa4648a5446460b7b963 [1] Reported-by: syzot Signed-off-by: Tetsuo Handa Signed-off-by: Konstantin Komarov Signed-off-by: Sasha Levin

fs/ntfs3: Fix slab-out-of-bounds read in ntfs_trim_fs

2022-12-31T12:32:49+00:00

[ Upstream commit 557d19675a470bb0a98beccec38c5dc3735c20fa ] Syzbot reports an out of bound access in ntfs_trim_fs. The cause of this is using a loop termination condition that compares window index (iw) with wnd->nbits instead of wnd->nwnd, due to which the index used for wnd->free_bits exceeds the size of the array allocated. Fix the loop condition. Fixes: 3f3b442b5ad2 ("fs/ntfs3: Add bitmap") Link: https://syzkaller.appspot.com/bug?extid=b892240eac461e488d51 Reported-by: syzbot+b892240eac461e488d51@syzkaller.appspotmail.com Signed-off-by: Abdun Nihaal Signed-off-by: Konstantin Komarov Signed-off-by: Sasha Levin

lib/bitmap: don't call __bitmap_weight() in kernel code

2022-09-26T19:19:12+00:00

__bitmap_weight() is not to be used directly in the kernel code because it's a helper for bitmap_weight(). Switch everything to bitmap_weight(). Signed-off-by: Yury Norov

fs/ntfs3: Remove unused function wnd_bits

2022-08-10T16:12:48+00:00

Since the function wnd_bits is defined but not called in any file, it is a useless function, and we delete it in view of the brevity of the code. Remove some warnings found by running scripts/kernel-doc, which is caused by using 'make W=1'. fs/ntfs3/bitmap.c:54:19: warning: unused function 'wnd_bits' [-Wunused-function]. Reported-by: Abaci Robot Signed-off-by: Jiapeng Chong Signed-off-by: Konstantin Komarov