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scancount=1 engine=8.12.0-2507300000 definitions=main-2508190133 X-Authority-Analysis: v=2.4 cv=fcOty1QF c=1 sm=1 tr=0 ts=68a4878b cx=c_pps a=XiAAW1AwiKB2Y8Wsi+sD2Q==:117 a=XiAAW1AwiKB2Y8Wsi+sD2Q==:17 a=6eWqkTHjU83fiwn7nKZWdM+Sl24=:19 a=z/mQ4Ysz8XfWz/Q5cLBRGdckG28=:19 a=lCpzRmAYbLLaTzLvsPZ7Mbvzbb8=:19 a=wKuvFiaSGQ0qltdbU6+NXLB8nM8=:19 a=Ol13hO9ccFRV9qXi2t6ftBPywas=:19 a=xqWC_Br6kY4A:10 a=IkcTkHD0fZMA:10 a=2OwXVqhp2XgA:10 a=GoEa3M9JfhUA:10 a=edf1wS77AAAA:8 a=hSkVLCK3AAAA:8 a=dZbOZ2KzAAAA:8 a=yPCof4ZbAAAA:8 a=C2nGwJBpJOnyvZGmsfIA:9 a=QEXdDO2ut3YA:10 a=DcSpbTIhAlouE1Uv7lRv:22 a=cQPPKAXgyycSBL8etih5:22 X-Proofpoint-GUID: 5uQMKWGpzP3VG8LYMlgdUJ1aJbama1W6 X-Proofpoint-ORIG-GUID: 5uQMKWGpzP3VG8LYMlgdUJ1aJbama1W6 X-Proofpoint-Spam-Details-Enc: AW1haW4tMjUwODE5MDEzMyBTYWx0ZWRfX+fOFEALXnqit OA3W1MgjfnnKOe3ww26bai7jHjBDkUyEG3jKchIMPr1g6MO6L2KgsQ9VtNe4twjtshGrvmO8ho7 Op/11UuuzSnhJwTrx9NpCPixHUSBSisTJGsnqH/KeaJ4FsH3UYj/8fpd79cb7Vid/ngxavuOyAo FNfYO+a0q4wA2tG8JWVjuIXnavJAkMQwN/aapJyKKZdxjt3eYUzuow+m1kgDOnk/kMZcRGfDvbf 0nbzEj55nSW6QUeAuZ2u+8sWHUB7iU0vyyFX5a+EX0RyRPYAC056OZqeRY4XT0HncCbjpi1gsGJ Yz0Tga9dctKRnSWILGtNLgZbCauBmsVzeQCH5WZQzMHilv9g02iKJXLlId3aRbVk/Y/6zF2jMR2 3UuMJJctWfOUUv7u5goKTkj3dWL9yS2yHsOicEFWTiLxSEBKzzRbRlCc3dsnmSbxfPb7xi9T On 8/19/25 8:41 AM, Edward Adam Davis wrote: > Before calling ocfs2_delete_osb(), ocfs2_journal_shutdown() has already > been executed in ocfs2_dismount_volume(), so osb->journal must be NULL. > Therefore, the following calltrace will inevitably fail when it reaches > jbd2_journal_release_jbd_inode(). > > ocfs2_dismount_volume()-> > ocfs2_delete_osb()-> > ocfs2_free_slot_info()-> > __ocfs2_free_slot_info()-> > evict()-> > ocfs2_evict_inode()-> > ocfs2_clear_inode()-> > jbd2_journal_release_jbd_inode(osb->journal->j_journal, > > Adding osb->journal checks will prevent null-ptr-deref during the above > execution path. > > Reported-by: syzbot+47d8cb2f2cc1517e515a@syzkaller.appspotmail.com > Closes: https://urldefense.com/v3/__https://syzkaller.appspot.com/bug?extid=47d8cb2f2cc1517e515a__;!!ACWV5N9M2RV99hQ!IR4Z9VG7eJItxQAEk4-F5EMvtDaSRSvdmdcMeFjajaLLqAc2Vk9HICGKkI-geAk8gYlrJzH-UEfJuaJ2kw$ > Tested-by: syzbot+47d8cb2f2cc1517e515a@syzkaller.appspotmail.com > Signed-off-by: Edward Adam Davis > --- > V1 -> V2: Corrected typos and comments. > > fs/ocfs2/inode.c | 3 +++ > 1 file changed, 3 insertions(+) > > diff --git a/fs/ocfs2/inode.c b/fs/ocfs2/inode.c > index 14bf440ea4df..6c4f78f473fb 100644 > --- a/fs/ocfs2/inode.c > +++ b/fs/ocfs2/inode.c > @@ -1281,6 +1281,9 @@ static void ocfs2_clear_inode(struct inode *inode) > * the journal is flushed before journal shutdown. Thus it is safe to > * have inodes get cleaned up after journal shutdown. > */ > + if (!osb->journal) > + return; > + > jbd2_journal_release_jbd_inode(osb->journal->j_journal, > &oi->ip_jinode); > } fixes commit da5e7c87827e8caa6a1eeec6d95dcf74ab592a01 (v5.15-5-gda5e7c87827). Also for the stable branch? Reviewed-by: Mark Tinguely