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| author | Heiko Carstens <[email protected]> | 2014-01-29 22:05:44 +0000 |
|---|---|---|
| committer | Linus Torvalds <[email protected]> | 2014-01-30 00:22:39 +0000 |
| commit | dfd948e32af2e7b28bcd7a490c0a30d4b8df2a36 (patch) | |
| tree | 41f14ee51b5d57387a425b241c67f7d33446076b /lib/dma-debug.c | |
| parent | mm/mempolicy.c: convert to pr_foo() (diff) | |
| download | kernel-dfd948e32af2e7b28bcd7a490c0a30d4b8df2a36.tar.gz kernel-dfd948e32af2e7b28bcd7a490c0a30d4b8df2a36.zip | |
fs/compat: fix parameter handling for compat readv/writev syscalls
We got a report that the pwritev syscall does not work correctly in
compat mode on s390.
It turned out that with commit 72ec35163f9f ("switch compat readv/writev
variants to COMPAT_SYSCALL_DEFINE") we lost the zero extension of a
couple of syscall parameters because the some parameter types haven't
been converted from unsigned long to compat_ulong_t.
This is needed for architectures where the ABI requires that the caller
of a function performed zero and/or sign extension to 64 bit of all
parameters.
Signed-off-by: Heiko Carstens <[email protected]>
Cc: Al Viro <[email protected]>
Cc: Ingo Molnar <[email protected]>
Cc: "H. Peter Anvin" <[email protected]>
Cc: Hendrik Brueckner <[email protected]>
Cc: Martin Schwidefsky <[email protected]>
Cc: <[email protected]> [v3.10+]
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
Diffstat (limited to 'lib/dma-debug.c')
0 files changed, 0 insertions, 0 deletions