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| author | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2011-12-01 13:32:15 +0100 |
|---|---|---|
| committer | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2011-12-01 13:32:17 +0100 |
| commit | d9ae6772d3a3d7325d535577d9fd09c0de8a9da3 (patch) | |
| tree | 120686dcbc091c5f2b5d89db4859553121d9f7b2 /arch/s390/kernel/signal.c | |
| parent | 5f894cbb6890d317699aa622b4dc9d73d009cd22 (diff) | |
| download | linux-d9ae6772d3a3d7325d535577d9fd09c0de8a9da3.tar.gz linux-d9ae6772d3a3d7325d535577d9fd09c0de8a9da3.tar.bz2 linux-d9ae6772d3a3d7325d535577d9fd09c0de8a9da3.zip | |
[S390] ptrace inferior call interactions with TIF_SYSCALL
The TIF_SYSCALL bit needs to be cleared if the debugger changes the state
of the ptraced process in regard to the presence of a system call.
Otherwise the system call will be restarted although the debugger set up
an inferior call.
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'arch/s390/kernel/signal.c')
| -rw-r--r-- | arch/s390/kernel/signal.c | 8 |
1 files changed, 3 insertions, 5 deletions
diff --git a/arch/s390/kernel/signal.c b/arch/s390/kernel/signal.c index 05a85bc14c98..7f6f9f354545 100644 --- a/arch/s390/kernel/signal.c +++ b/arch/s390/kernel/signal.c @@ -460,9 +460,9 @@ void do_signal(struct pt_regs *regs) regs->svc_code >> 16); break; } - /* No longer in a system call */ - clear_thread_flag(TIF_SYSCALL); } + /* No longer in a system call */ + clear_thread_flag(TIF_SYSCALL); if ((is_compat_task() ? handle_signal32(signr, &ka, &info, oldset, regs) : @@ -486,6 +486,7 @@ void do_signal(struct pt_regs *regs) } /* No handlers present - check for system call restart */ + clear_thread_flag(TIF_SYSCALL); if (current_thread_info()->system_call) { regs->svc_code = current_thread_info()->system_call; switch (regs->gprs[2]) { @@ -500,9 +501,6 @@ void do_signal(struct pt_regs *regs) regs->gprs[2] = regs->orig_gpr2; set_thread_flag(TIF_SYSCALL); break; - default: - clear_thread_flag(TIF_SYSCALL); - break; } } |