diff options
| author | Gerald Schaefer | 2006-03-08 06:55:37 +0100 |
|---|---|---|
| committer | Linus Torvalds | 2006-03-08 23:14:01 +0100 |
| commit | 331c46591414f7f92b1cec048009abe89892ee79 (patch) | |
| tree | ce19fbf200bcef3d0802f59fb5aed5b17005c089 /arch/s390/lib | |
| parent | [PATCH] jffs2: avoid divide-by-zero (diff) | |
| download | kernel-qcow2-linux-331c46591414f7f92b1cec048009abe89892ee79.tar.gz kernel-qcow2-linux-331c46591414f7f92b1cec048009abe89892ee79.tar.xz kernel-qcow2-linux-331c46591414f7f92b1cec048009abe89892ee79.zip | |
[PATCH] s390: fix strnlen_user return value
strnlen_user is supposed to return then length count + 1 if no terminating \0
is found, and it should return 0 on exception. Found by David Howells
<dhowells@redhat.com>.
Signed-off-by: Gerald Schaefer <geraldsc@de.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Acked-By: David Howells <dhowells@redhat.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'arch/s390/lib')
| -rw-r--r-- | arch/s390/lib/uaccess.S | 6 | ||||
| -rw-r--r-- | arch/s390/lib/uaccess64.S | 6 |
2 files changed, 6 insertions, 6 deletions
diff --git a/arch/s390/lib/uaccess.S b/arch/s390/lib/uaccess.S index 88fc94fe6488..5d59e2625048 100644 --- a/arch/s390/lib/uaccess.S +++ b/arch/s390/lib/uaccess.S @@ -198,12 +198,12 @@ __strnlen_user_asm: 0: srst %r2,%r1 jo 0b sacf 0 - jh 1f # \0 found in string ? ahi %r2,1 # strnlen_user result includes the \0 -1: slr %r2,%r3 + # or return count+1 if \0 not found + slr %r2,%r3 br %r14 2: sacf 0 - lhi %r2,-EFAULT + slr %r2,%r2 # return 0 on exception br %r14 .section __ex_table,"a" .long 0b,2b diff --git a/arch/s390/lib/uaccess64.S b/arch/s390/lib/uaccess64.S index 50219786fc7a..19b41a33c230 100644 --- a/arch/s390/lib/uaccess64.S +++ b/arch/s390/lib/uaccess64.S @@ -194,12 +194,12 @@ __strnlen_user_asm: 0: srst %r2,%r1 jo 0b sacf 0 - jh 1f # \0 found in string ? aghi %r2,1 # strnlen_user result includes the \0 -1: slgr %r2,%r3 + # or return count+1 if \0 not found + slgr %r2,%r3 br %r14 2: sacf 0 - lghi %r2,-EFAULT + slgr %r2,%r2 # return 0 on exception br %r14 .section __ex_table,"a" .quad 0b,2b |