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| author | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2007-05-24 15:41:04 +1000 |
|---|---|---|
| committer | Paul Mackerras <paulus@samba.org> | 2007-06-02 21:01:55 +1000 |
| commit | 7d43e57764fe6922703c36d8d0d56a7ead21f03d (patch) | |
| tree | 86e61fb96320bc039c301c9bd690d7f8ea9320f7 /arch/powerpc | |
| parent | 5169b8a1659fef9cc093ed3d889a854945a18177 (diff) | |
| download | op-kernel-dev-7d43e57764fe6922703c36d8d0d56a7ead21f03d.zip op-kernel-dev-7d43e57764fe6922703c36d8d0d56a7ead21f03d.tar.gz | |
[POWERPC] Fix ppc32 single-stepping out of syscalls
The ppc32 kernel didn't properly set/clear the TIF_SINGLESTEP
flag, causing return from syscalls to not SIGTRAP, thus executing
one more instruction before stopping again.
This fixes it. The ptrace code is a bit of a mess, and is overdue
for at least a -proper- 32/64 bits split and possibly more cleanups
but this minimum fix should be ok for 2.6.22
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Diffstat (limited to 'arch/powerpc')
| -rw-r--r-- | arch/powerpc/kernel/ptrace.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/powerpc/kernel/ptrace.c b/arch/powerpc/kernel/ptrace.c index f4f391c..bf76562 100644 --- a/arch/powerpc/kernel/ptrace.c +++ b/arch/powerpc/kernel/ptrace.c @@ -218,6 +218,7 @@ set_single_step(struct task_struct *task) regs->msr |= MSR_SE; #endif } + set_tsk_thread_flag(task, TIF_SINGLESTEP); } static inline void @@ -233,6 +234,7 @@ clear_single_step(struct task_struct *task) regs->msr &= ~MSR_SE; #endif } + clear_tsk_thread_flag(task, TIF_SINGLESTEP); } #endif /* CONFIG_PPC32 */ |
