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authorChao Yu <yuchao0@huawei.com>2017-06-07 11:17:35 +0800
committerJaegeuk Kim <jaegeuk@kernel.org>2017-07-04 02:11:39 -0700
commit1f258ec13b82d3d947b515a007a748ffcbe29f9a (patch)
treee65cb367181d46e701678d11dfc0ba74f91ac8ec /fs/f2fs
parentfebeca6d375531f2d3244b47bf0eb396180689e0 (diff)
downloadlinux-1f258ec13b82d3d947b515a007a748ffcbe29f9a.tar.bz2
f2fs: fix to avoid panic when encountering corrupt node
With fault_injection option, generic/361 of fstests will complain us with below message: Call Trace: get_node_page+0x12/0x20 [f2fs] f2fs_iget+0x92/0x7d0 [f2fs] f2fs_fill_super+0x10fb/0x15e0 [f2fs] mount_bdev+0x184/0x1c0 f2fs_mount+0x15/0x20 [f2fs] mount_fs+0x39/0x150 vfs_kern_mount+0x67/0x110 do_mount+0x1bb/0xc70 SyS_mount+0x83/0xd0 do_syscall_64+0x6e/0x160 entry_SYSCALL64_slow_path+0x25/0x25 Since mkfs loop device in f2fs partition can be failed silently due to checkpoint error injection, so root inode page can be corrupted, in order to avoid needless panic, in get_node_page, it's better to leave message and return error to caller, and let fsck repaire it later. Signed-off-by: Chao Yu <yuchao0@huawei.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Diffstat (limited to 'fs/f2fs')
-rw-r--r--fs/f2fs/node.c14
1 files changed, 11 insertions, 3 deletions
diff --git a/fs/f2fs/node.c b/fs/f2fs/node.c
index 05700e54f91e..f522378224aa 100644
--- a/fs/f2fs/node.c
+++ b/fs/f2fs/node.c
@@ -1157,6 +1157,7 @@ repeat:
f2fs_put_page(page, 1);
return ERR_PTR(err);
} else if (err == LOCKED_PAGE) {
+ err = 0;
goto page_hit;
}
@@ -1170,15 +1171,22 @@ repeat:
goto repeat;
}
- if (unlikely(!PageUptodate(page)))
+ if (unlikely(!PageUptodate(page))) {
+ err = -EIO;
goto out_err;
+ }
page_hit:
if(unlikely(nid != nid_of_node(page))) {
- f2fs_bug_on(sbi, 1);
+ f2fs_msg(sbi->sb, KERN_WARNING, "inconsistent node block, "
+ "nid:%lu, node_footer[nid:%u,ino:%u,ofs:%u,cpver:%llu,blkaddr:%u]",
+ nid, nid_of_node(page), ino_of_node(page),
+ ofs_of_node(page), cpver_of_node(page),
+ next_blkaddr_of_node(page));
ClearPageUptodate(page);
+ err = -EINVAL;
out_err:
f2fs_put_page(page, 1);
- return ERR_PTR(-EIO);
+ return ERR_PTR(err);
}
return page;
}