ext4: check if in-inode xattr is corrupted in ext4_expand_extra_isize_ea()

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commit 9e92f48c34 upstream.

We aren't checking to see if the in-inode extended attribute is
corrupted before we try to expand the inode's extra isize fields.

This can lead to potential crashes caused by the BUG_ON() check in
ext4_xattr_shift_entries().

Signed-off-by: Theodore Ts'o <tytso@mit.edu>
[bwh: Backported to 3.16: s/EFSCORRUPTED/EIO/]
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>

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Theodore Ts'o 2016-03-22 16:13:15 -04:00 • committed by Ben Hutchings

parent d5a25fcf0e

commit ee0e34157d

1 changed files with 28 additions and 4 deletions

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fs/ext4/xattr.c

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