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| author | Andreas Gruenbacher <agruenba@redhat.com> | 2024-03-11 17:51:59 +0300 |
|---|---|---|
| committer | Andreas Gruenbacher <agruenba@redhat.com> | 2024-04-09 19:35:57 +0300 |
| commit | 35264909e9d1973ab9aaa2a1b07cda70f12bb828 (patch) | |
| tree | 0b9c4378d590d4ba11cf3efb42d3f75676047b82 /tools/perf/scripts/python | |
| parent | b01189333ee91c1ae6cd96dfd1e3a3c2e69202f0 (diff) | |
| download | linux-35264909e9d1973ab9aaa2a1b07cda70f12bb828.tar.xz | |
gfs2: Fix NULL pointer dereference in gfs2_log_flush
In gfs2_jindex_free(), set sdp->sd_jdesc to NULL under the log flush
lock to provide exclusion against gfs2_log_flush().
In gfs2_log_flush(), check if sdp->sd_jdesc is non-NULL before
dereferencing it. Otherwise, we could run into a NULL pointer
dereference when outstanding glock work races with an unmount
(glock_work_func -> run_queue -> do_xmote -> inode_go_sync ->
gfs2_log_flush).
Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>
Diffstat (limited to 'tools/perf/scripts/python')
0 files changed, 0 insertions, 0 deletions