diff options
| author | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2005-06-05 00:43:30 +0200 |
|---|---|---|
| committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-06-05 02:13:00 +0200 |
| commit | 778959db97c7ed8eed4025916916b17a4629ce3d (patch) | |
| tree | a1e901eac1c3d567df29cd87e76ff804b4753d83 /arch/s390/kernel/setup.c | |
| parent | [PATCH] mpage_end_io_write() I/O error handling fix (diff) | |
| download | linux-778959db97c7ed8eed4025916916b17a4629ce3d.tar.xz linux-778959db97c7ed8eed4025916916b17a4629ce3d.zip | |
[PATCH] s390: ptrace peek and poke
The special cases of peek and poke on acrs[15] and the fpc register are not
handled correctly. A poke on acrs[15] will clobber the 4 bytes after the
access registers in the thread_info structure. That happens to be the kernel
stack pointer. A poke on the fpc with an invalid value is not caught by the
validity check. On the next context switch the broken fpc value will cause a
program check in the kernel. Improving the checks in peek and poke fixes
this.
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'arch/s390/kernel/setup.c')
0 files changed, 0 insertions, 0 deletions