Hello!
The test was conducted on linux-2.6-utrace utrace-ptrace branch with and
without CONFIG_UTRACE.
The machine was an Intel x86_64 system. Biarch and other testing are under way.
Here is the diff, and the results look similar. Detailed logs can be found at,
Hi Oleg, Roland, Ananth
When I get the latest set of ptrace-tests by using.
cvs -d :pserver:anoncvs:anon...@sources.redhat.com:/cvs/systemtap co
ptrace-tests
I get errors when I run make
syscall-from-clone.c: In function âmainâ:
syscall-from-clone.c:127: error: storage size of
Hello.
This is the new iteration of Roland's utrace patch, this time
with rewrite-ptrace-via-utrace + cleanups in utrace core.
1-7 are already in -mm tree, I am sending them to simplify the
review.
8-12 don not change the behaviour, simple preparations.
13-14 add utrace-ptrace and utrace
(already in mm: ptrace-cleanup-ptrace_init_task-ptrace_link-path.patch)
No functional changes.
ptrace_init_task() looks confusing, as if we always auto-attach when
bool ptrace argument is true, while in fact we attach only if current
is traced.
Make the code more explicit and kill now unused
(already in mm: ptrace-introduce-user_single_step_siginfo-helper.patch)
Suggested by Roland.
Currently there is no way to synthesize a single-stepping trap in the
arch-independent manner. This patch adds the default helper which fills
siginfo_t, arch/ can can override it.
Architetures which
(already in mm: ptrace-powerpc-implement-user_single_step_siginfo.patch)
Suggested by Roland.
Implement user_single_step_siginfo() for powerpc.
Signed-off-by: Oleg Nesterov o...@redhat.com
Acked-by: Roland McGrath rol...@redhat.com
---
arch/powerpc/include/asm/ptrace.h |2 ++
(already in mm:
ptrace-change-tracehook_report_syscall_exit-to-handle-stepping.patch)
Suggested by Roland.
Change tracehook_report_syscall_exit() to look at step flag and send
the trap signal if needed.
This change affects ia64, microblaze, parisc, powerpc, sh. They pass
nonzero step argument
(already in mm: ptrace-x86-implement-user_single_step_siginfo.patch)
Suggested by Roland.
Implement user_single_step_siginfo() for x86. Extract this code
from send_sigtrap().
Since x86 calls tracehook_report_syscall_exit(step = 0) the new
helper is not used yet.
Signed-off-by: Oleg Nesterov
(already in mm:
ptrace-x86-change-syscall_trace_leave-to-rely-on-tracehook-when-stepping.patch)
Suggested by Roland.
Unlike powepc, x86 always calls tracehook_report_syscall_exit(step)
with step = 0, and sends the trap by hand.
This results in unnecessary SIGTRAP when PTRACE_SINGLESTEP follows
No functional changes, preparation for utrace-ptrace.
task_ptrace() != 0 if and only if PT_PTRACED bit is set, kill
some PT_PTRACED checks in tracehook.h to ensure the result is
the same with or without utrace which doesn't set PT_PTRACED.
Signed-off-by: Roland McGrath rol...@redhat.com
No functional changes, preparation for utrace-ptrace.
tracehook_report_syscall_exit() and tracehook_signal_handler() assume
that only ptrace can set TIF_SINGLESTEP. Currently this is true but we
are going to change this, the stepping logic will be moved into utrace
layer.
Change this code to
Export __ptrace_detach() and do_notify_parent_cldstop() for
ptrace-utrace.
Signed-off-by: Roland McGrath rol...@redhat.com
Signed-off-by: Oleg Nesterov o...@redhat.com
---
include/linux/ptrace.h |1 +
include/linux/sched.h |1 +
kernel/ptrace.c|2 +-
kernel/signal.c
No functional changes, preparation for the next patch.
Move the code which can be shared with ptrace-utrace up, before
__ptrace_link(). This way ptrace-utrace needs a single #ifdef in
ptrace.c.
Signed-off-by: Roland McGrath rol...@redhat.com
Signed-off-by: Oleg Nesterov o...@redhat.com
---
Oleg Nesterov o...@redhat.com writes:
From: Roland McGrath rol...@redhat.com
This adds the utrace facility, a new modular interface in the kernel
for implementing user thread tracing and debugging. This fits on top
of the tracehook_* layer, so the new code is well-isolated.
Could we just
On 11/24, Andi Kleen wrote:
Oleg Nesterov o...@redhat.com writes:
From: Roland McGrath rol...@redhat.com
This adds the utrace facility, a new modular interface in the kernel
for implementing user thread tracing and debugging. This fits on top
of the tracehook_* layer, so the new code
On Tue, Nov 24, 2009 at 09:41:52PM +0100, Oleg Nesterov wrote:
On 11/24, Andi Kleen wrote:
Oleg Nesterov o...@redhat.com writes:
From: Roland McGrath rol...@redhat.com
This adds the utrace facility, a new modular interface in the kernel
for implementing user thread tracing and
Hi -
On Tue, Nov 24, 2009 at 10:26:19PM +0100, Andi Kleen wrote:
[...]
For example. tracehook_report_syscall_entry() has a lot of callers
in arch/, each callsite should be changed to do
if ((task_utrace_flags(current) UTRACE_EVENT(SYSCALL_ENTRY))
On Tue, Nov 24, 2009 at 04:26:57PM +0100, Oleg Nesterov wrote:
On 11/24, Ananth N Mavinakayanahalli wrote:
...
step-jump-cont: step-jump-cont.c:140: pokeuser: Assertion `l == 0'
failed.
/bin/sh: line 4: 9070 Aborted ${dir}$tst
FAIL: step-jump-cont
errno 14 (Bad
18 matches
Mail list logo
