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charset="utf-8" Content-ID: <3EA93839C1CA8D4CAB4305F891EE1484@namprd15.prod.outlook.com> Content-Transfer-Encoding: quoted-printable Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Subject: Re: [PATCH v3] hfs: remove BUG() from hfs_release_folio()/hfs_test_inode()/hfs_write_inode() X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1099,Hydra:6.1.9,FMLib:17.12.80.40 definitions=2025-07-17_02,2025-07-17_02,2025-03-28_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 bulkscore=0 lowpriorityscore=0 spamscore=0 malwarescore=0 impostorscore=0 phishscore=0 clxscore=1015 mlxlogscore=999 priorityscore=1501 adultscore=0 suspectscore=0 mlxscore=0 classifier=spam authscore=99 authtc=n/a authcc= route=outbound adjust=0 reason=mlx scancount=2 engine=8.19.0-2505280000 definitions=main-2507170162 On Fri, 2025-07-18 at 00:32 +0900, Tetsuo Handa wrote: > Since syzkaller can mount crafted filesystem images with inode->i_ino =3D= =3D 0 > (which is not listed as "Some special File ID numbers" in fs/hfs/hfs.h ), > replace BUG() with pr_err(). >=20 > Reported-by: syzbot+97e301b4b82ae803d21b@syzkaller.appspotmail.com > Closes: https://syzkaller.appspot.com/bug?extid=3D97e301b4b82ae803d21b =20 > Signed-off-by: Tetsuo Handa > --- > fs/hfs/inode.c | 8 +++++--- > 1 file changed, 5 insertions(+), 3 deletions(-) >=20 > diff --git a/fs/hfs/inode.c b/fs/hfs/inode.c > index a81ce7a740b9..9bbf2883bb8f 100644 > --- a/fs/hfs/inode.c > +++ b/fs/hfs/inode.c > @@ -81,7 +81,8 @@ static bool hfs_release_folio(struct folio *folio, gfp_= t mask) > tree =3D HFS_SB(sb)->cat_tree; > break; > default: > - BUG(); > + pr_err("detected unknown inode %lu, running fsck.hfs is recommended.\n= ", > + inode->i_ino); > return false; > } > =20 > @@ -305,7 +306,7 @@ static int hfs_test_inode(struct inode *inode, void *= data) > case HFS_CDR_FIL: > return inode->i_ino =3D=3D be32_to_cpu(rec->file.FlNum); > default: > - BUG(); > + pr_err("detected unknown type %u, running fsck.hfs is recommended.\n",= rec->type); > return 1; > } > } > @@ -441,7 +442,8 @@ int hfs_write_inode(struct inode *inode, struct write= back_control *wbc) > hfs_btree_write(HFS_SB(inode->i_sb)->cat_tree); > return 0; > default: > - BUG(); > + pr_err("detected unknown inode %lu, running fsck.hfs is recommended.\= n", > + inode->i_ino); > return -EIO; > } > } Looks good! Reviewed-by: Viacheslav Dubeyko Thanks, Slava.