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author | Dmitry V. Levin <ldv@altlinux.org> | 2015-12-27 02:13:27 +0300 |
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committer | David S. Miller <davem@davemloft.net> | 2016-01-14 13:06:09 -0500 |
commit | 525fd5a94e1be0776fa652df5c687697db508c91 (patch) | |
tree | 11abdf7711fb6e14cc54f546762ef0754bd9933d /fs/affs/super.c | |
parent | 7fdec82af6a9e190e53d07a1463d2a9ac49a8750 (diff) | |
download | op-kernel-dev-525fd5a94e1be0776fa652df5c687697db508c91.zip op-kernel-dev-525fd5a94e1be0776fa652df5c687697db508c91.tar.gz |
sparc64: fix incorrect sign extension in sys_sparc64_personality
The value returned by sys_personality has type "long int".
It is saved to a variable of type "int", which is not a problem
yet because the type of task_struct->pesonality is "unsigned int".
The problem is the sign extension from "int" to "long int"
that happens on return from sys_sparc64_personality.
For example, a userspace call personality((unsigned) -EINVAL) will
result to any subsequent personality call, including absolutely
harmless read-only personality(0xffffffff) call, failing with
errno set to EINVAL.
Signed-off-by: Dmitry V. Levin <ldv@altlinux.org>
Cc: <stable@vger.kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'fs/affs/super.c')
0 files changed, 0 insertions, 0 deletions