diff options
| author | Vitaly Mayatskikh <v.mayatskih@gmail.com> | 2017-09-22 07:18:39 +0200 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2017-10-11 05:54:51 +0200 |
| commit | 95d78c28b5a85bacbc29b8dba7c04babb9b0d467 (patch) | |
| tree | 171528916186018b071110eced6ebc55f5d6b3c3 /block/compat_ioctl.c | |
| parent | direct-io: Prevent NULL pointer access in submit_page_section (diff) | |
| download | linux-95d78c28b5a85bacbc29b8dba7c04babb9b0d467.tar.xz linux-95d78c28b5a85bacbc29b8dba7c04babb9b0d467.zip | |
fix unbalanced page refcounting in bio_map_user_iov
bio_map_user_iov and bio_unmap_user do unbalanced pages refcounting if
IO vector has small consecutive buffers belonging to the same page.
bio_add_pc_page merges them into one, but the page reference is never
dropped.
Cc: stable@vger.kernel.org
Signed-off-by: Vitaly Mayatskikh <v.mayatskih@gmail.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'block/compat_ioctl.c')
0 files changed, 0 insertions, 0 deletions