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| author | Davide Libenzi <davidel@xmailserver.org> | 2004-08-22 22:40:02 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2004-08-22 22:40:02 -0700 |
| commit | 1326cafc397cd609888edc8776a6e0572e16c67f (patch) | |
| tree | 0141da9ec2db0440970269cbfd5708377e6dd507 /arch | |
| parent | af583a5b116ee78d8f2b5c5aec18346af0f924b3 (diff) | |
| download | history-1326cafc397cd609888edc8776a6e0572e16c67f.tar.gz | |
[PATCH] Don't use SYSGOOD for ptrace singlestep
The ptrace single step mode should not use the SYSGOOD bit and should not
report SIGTRAP|0x80 to the ptrace parent. The following patch add an
explicit check and to not add 0x80 in this is a singlestep trap.
Signed-off-by: Davide Libenzi <davidel@xmailserver.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/i386/kernel/ptrace.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/arch/i386/kernel/ptrace.c b/arch/i386/kernel/ptrace.c index 08019db07ffb60..e0c9a03739a808 100644 --- a/arch/i386/kernel/ptrace.c +++ b/arch/i386/kernel/ptrace.c @@ -546,8 +546,8 @@ void do_syscall_trace(struct pt_regs *regs, int entryexit) return; /* the 0x80 provides a way for the tracing parent to distinguish between a syscall stop and SIGTRAP delivery */ - ptrace_notify(SIGTRAP | ((current->ptrace & PT_TRACESYSGOOD) - ? 0x80 : 0)); + ptrace_notify(SIGTRAP | ((current->ptrace & PT_TRACESYSGOOD) && + !test_thread_flag(TIF_SINGLESTEP) ? 0x80 : 0)); /* * this isn't the same as continuing with a signal, but it will do |