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| author | Jie Liu <jeff.liu@oracle.com> | 2014-01-02 11:30:42 -0600 |
|---|---|---|
| committer | Dave Kleikamp <dave.kleikamp@oracle.com> | 2014-01-02 11:36:56 -0600 |
| commit | 0439e091e3b1fe41a350540c84857a573fde3d72 (patch) | |
| tree | 56a720ab70a9ad00c6cb405915bda26f2665d7ba /arch/powerpc/include/asm/kvm_asm.h | |
| parent | 9a0bb2966efbf30a71c128c3af63307d8b5f5fc0 (diff) | |
jfs: fix xattr value size overflow in __jfs_setxattr
There is a potential overflow if the specified EA value size is
greater than USHRT_MAX because the size of value is limited by
the on-disk format (i.e, __le16), this issue could be reflected
via the tests below:
# touch /jfs/testfile
# setfattr -n user.comment -v `perl -e 'print "A"x65536'` /jfs/testfile
setfattr: /jfs/testfile: Invalid argument
Syslog:
... jfs_xsetattr: xattr_size = 21, new_size = 65557
This patch add pre-checkups of EA value size against USHRT_MAX to
avoid this problem, and return -E2BIG which is consistent with the
VFS setxattr interface. Moreover, fix the debug code to print the
correct function name.
With this fix:
setfattr: /jfs/testfile: Argument list too long
Signed-off-by: Jie Liu <jeff.liu@oracle.com>
Signed-off-by: Dave Kleikamp <dave.kleikamp@oracle.com>
Diffstat (limited to 'arch/powerpc/include/asm/kvm_asm.h')
0 files changed, 0 insertions, 0 deletions