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| author | Pavel Skripkin <paskripkin@gmail.com> | 2021-06-06 17:24:05 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-07-20 16:22:40 +0200 |
| commit | 7bde24bde490f3139eee147efc6d60d6040fe975 (patch) | |
| tree | 002bda3b357c8e17ee6cf48426136a509ec0735d /drivers/misc/ibmasm/module.c | |
| parent | eebbe27ed8605a8648cd72afc14af273b9d8f4c8 (diff) | |
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 'drivers/misc/ibmasm/module.c')
0 files changed, 0 insertions, 0 deletions