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engine=ICAP:2.0.272,Aquarius:18.0.987,Hydra:6.0.619,FMLib:17.11.176.26 definitions=2023-11-01_14,2023-11-01_02,2023-05-22_02 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 spamscore=0 suspectscore=0 malwarescore=0 mlxscore=0 mlxlogscore=999 adultscore=0 phishscore=0 bulkscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2310240000 definitions=main-2311010129 X-Proofpoint-GUID: CqLwwdhg5IbUe1B_9KqTNnu64KvaTXgb X-Proofpoint-ORIG-GUID: CqLwwdhg5IbUe1B_9KqTNnu64KvaTXgb Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 10/31/23 12:39AM, Edward Adam Davis wrote: > When the execution of diMount(ipimap) fails, the object ipimap that has been > released may be accessed in diFreeSpecial(). Asynchronous ipimap release occurs > when rcu_core() calls jfs_free_node(). > > Therefore, when diMount(ipimap) fails, sbi->ipimap should not be initialized as > ipimap. > > Reported-and-tested-by: syzbot+01cf2dbcbe2022454388@syzkaller.appspotmail.com > Signed-off-by: Edward Adam Davis Looks good. Thanks, Shaggy > --- > fs/jfs/jfs_mount.c | 6 +++--- > 1 file changed, 3 insertions(+), 3 deletions(-) > > diff --git a/fs/jfs/jfs_mount.c b/fs/jfs/jfs_mount.c > index 415eb65a36ff..9b5c6a20b30c 100644 > --- a/fs/jfs/jfs_mount.c > +++ b/fs/jfs/jfs_mount.c > @@ -172,15 +172,15 @@ int jfs_mount(struct super_block *sb) > } > jfs_info("jfs_mount: ipimap:0x%p", ipimap); > > - /* map further access of per fileset inodes by the fileset inode */ > - sbi->ipimap = ipimap; > - > /* initialize fileset inode allocation map */ > if ((rc = diMount(ipimap))) { > jfs_err("jfs_mount: diMount failed w/rc = %d", rc); > goto err_ipimap; > } > > + /* map further access of per fileset inodes by the fileset inode */ > + sbi->ipimap = ipimap; > + > return rc; > > /*