Searched hist:"3429 ef5f50909cee9e498c50f0c499b9397116ce" (Results 1 – 2 of 2) sorted by relevance
| /openbmc/linux/fs/gfs2/ |
| H A D | log.c | diff 3429ef5f50909cee9e498c50f0c499b9397116ce Mon Mar 11 09:51:59 CDT 2024 Andreas Gruenbacher <agruenba@redhat.com> gfs2: Fix NULL pointer dereference in gfs2_log_flush
[ Upstream commit 35264909e9d1973ab9aaa2a1b07cda70f12bb828 ]
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>
Signed-off-by: Sasha Levin <sashal@kernel.org>
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| H A D | super.c | diff 3429ef5f50909cee9e498c50f0c499b9397116ce Mon Mar 11 09:51:59 CDT 2024 Andreas Gruenbacher <agruenba@redhat.com> gfs2: Fix NULL pointer dereference in gfs2_log_flush
[ Upstream commit 35264909e9d1973ab9aaa2a1b07cda70f12bb828 ]
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>
Signed-off-by: Sasha Levin <sashal@kernel.org>
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