diff options
| author | Jan Kara <jack@suse.cz> | 2026-09-03 11:05:05 +0200 |
|---|---|---|
| committer | Jan Kara <jack@suse.cz> | 2026-09-04 11:01:09 +0200 |
| commit | 9e1483cf2d712012f9f35a13e51dbc58b6c90606 (patch) | |
| tree | 229adf55bbdcd72b6bf516664f3d78f82b11294a /tools/perf/scripts/python/bin/stackcollapse-record | |
| parent | 6a35b82f8ef70e0129344ece5bbe5bca76acd886 (diff) | |
| download | linux-9e1483cf2d712012f9f35a13e51dbc58b6c90606.tar.gz linux-9e1483cf2d712012f9f35a13e51dbc58b6c90606.zip | |
shmem: Refuse to enable tmpfs format for another filesystem
It is possible to issue Q_QUOTAON quotactl(2) e.g. for ext4 filesystem
requesting to enable quota using tmpfs quota format. With suitable
passed arguments this can actually succeed in enabling tmpfs quota
format on top of ext4 filesystem which leads to crashes later in
dquot_acquire(). As tmpfs quota format is intended for tmpfs
filesystems only, verify we are indeed enabling quotas there.
Reported-by: Farhad Alemi <farhad.alemi@berkeley.edu>
Acked-by: Hugh Dickins <hughd@google.com>
Link: https://patch.msgid.link/20260903090508.1360863-4-jack@suse.cz
Signed-off-by: Jan Kara <jack@suse.cz>
Diffstat (limited to 'tools/perf/scripts/python/bin/stackcollapse-record')
0 files changed, 0 insertions, 0 deletions