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| author | Osama Muhammad <osmtendev@gmail.com> | 2023-11-06 19:21:29 +0300 |
|---|---|---|
| committer | Andreas Gruenbacher <agruenba@redhat.com> | 2023-12-18 16:16:36 +0300 |
| commit | 8877243beafa7c6bfc42022cbfdf9e39b25bd4fa (patch) | |
| tree | c6bcdf84b0b80c80fe469180833d47ecad8bfbac /fs/gfs2/glock.c | |
| parent | b85ea95d086471afb4ad062012a4d73cd328fa86 (diff) | |
| download | linux-8877243beafa7c6bfc42022cbfdf9e39b25bd4fa.tar.xz | |
gfs2: Fix kernel NULL pointer dereference in gfs2_rgrp_dump
Syzkaller has reported a NULL pointer dereference when accessing
rgd->rd_rgl in gfs2_rgrp_dump(). This can happen when creating
rgd->rd_gl fails in read_rindex_entry(). Add a NULL pointer check in
gfs2_rgrp_dump() to prevent that.
Reported-and-tested-by: syzbot+da0fc229cc1ff4bb2e6d@syzkaller.appspotmail.com
Link: https://syzkaller.appspot.com/bug?extid=da0fc229cc1ff4bb2e6d
Fixes: 72244b6bc752 ("gfs2: improve debug information when lvb mismatches are found")
Signed-off-by: Osama Muhammad <osmtendev@gmail.com>
Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>
Diffstat (limited to 'fs/gfs2/glock.c')
0 files changed, 0 insertions, 0 deletions