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| author | Pavel Skripkin <paskripkin@gmail.com> | 2021-06-06 17:24:05 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-07-19 09:53:18 +0300 |
| commit | a21e5cb1a64c904f1f0ef7b2d386fc7d2b1d2ce2 (patch) | |
| tree | 2db193ed9d010fb7e491b3f608018c8fe222f2df /fs | |
| parent | f190ca9068e31f9cb27d5d7ee95535ad28b7d64d (diff) | |
| download | linux-a21e5cb1a64c904f1f0ef7b2d386fc7d2b1d2ce2.tar.xz | |
jfs: fix GPF in diFree
commit 9d574f985fe33efd6911f4d752de6f485a1ea732 upstream.
Avoid passing inode with
JFS_SBI(inode->i_sb)->ipimap == NULL to
diFree()[1]. GFP will appear:
struct inode *ipimap = JFS_SBI(ip->i_sb)->ipimap;
struct inomap *imap = JFS_IP(ipimap)->i_imap;
JFS_IP() will return invalid pointer when ipimap == NULL
Call Trace:
diFree+0x13d/0x2dc0 fs/jfs/jfs_imap.c:853 [1]
jfs_evict_inode+0x2c9/0x370 fs/jfs/inode.c:154
evict+0x2ed/0x750 fs/inode.c:578
iput_final fs/inode.c:1654 [inline]
iput.part.0+0x3fe/0x820 fs/inode.c:1680
iput+0x58/0x70 fs/inode.c:1670
Reported-and-tested-by: syzbot+0a89a7b56db04c21a656@syzkaller.appspotmail.com
Signed-off-by: Pavel Skripkin <paskripkin@gmail.com>
Signed-off-by: Dave Kleikamp <dave.kleikamp@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/jfs/inode.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/fs/jfs/inode.c b/fs/jfs/inode.c index 9486afcdac76..d862cfc3d3a8 100644 --- a/fs/jfs/inode.c +++ b/fs/jfs/inode.c @@ -151,7 +151,8 @@ void jfs_evict_inode(struct inode *inode) if (test_cflag(COMMIT_Freewmap, inode)) jfs_free_zero_link(inode); - diFree(inode); + if (JFS_SBI(inode->i_sb)->ipimap) + diFree(inode); /* * Free the inode from the quota allocation. |