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| author | Joseph Qi | 2015-08-07 00:46:48 +0200 |
|---|---|---|
| committer | Linus Torvalds | 2015-08-07 03:39:41 +0200 |
| commit | 32e5a2a2be6b085febaac36efff495ad65a55e6c (patch) | |
| tree | 7b491fbda572fa03a6a0fbb3dc650e2e09fe7cf6 /ipc/shm.c | |
| parent | kthread: export kthread functions (diff) | |
| download | kernel-qcow2-linux-32e5a2a2be6b085febaac36efff495ad65a55e6c.tar.gz kernel-qcow2-linux-32e5a2a2be6b085febaac36efff495ad65a55e6c.tar.xz kernel-qcow2-linux-32e5a2a2be6b085febaac36efff495ad65a55e6c.zip | |
ocfs2: fix shift left overflow
When using a large volume, for example 9T volume with 2T already used,
frequent creation of small files with O_DIRECT when the IO is not
cluster aligned may clear sectors in the wrong place. This will cause
filesystem corruption.
This is because p_cpos is a u32. When calculating the corresponding
sector it should be converted to u64 first, otherwise it may overflow.
Signed-off-by: Joseph Qi <joseph.qi@huawei.com>
Cc: Mark Fasheh <mfasheh@suse.com>
Cc: Joel Becker <jlbec@evilplan.org>
Cc: <stable@vger.kernel.org> [4.0+]
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'ipc/shm.c')
0 files changed, 0 insertions, 0 deletions