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| author |   Vitaly Mayatskikh <v.mayatskih@gmail.com> | 2017-09-22 01:18:39 -0400 |
|---|---|---|
| committer |   Al Viro <viro@zeniv.linux.org.uk> | 2017-10-10 23:54:51 -0400 |
| commit | 95d78c28b5a85bacbc29b8dba7c04babb9b0d467 (patch) | |
| tree | 171528916186018b071110eced6ebc55f5d6b3c3 /tools/perf/scripts/python/call-graph-from-sql.py | |
| parent | direct-io: Prevent NULL pointer access in submit_page_section (diff) | |
| download | wireguard-linux-95d78c28b5a85bacbc29b8dba7c04babb9b0d467.tar.xz wireguard-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 'tools/perf/scripts/python/call-graph-from-sql.py')
0 files changed, 0 insertions, 0 deletions