Re: [LTP] [PATCH] syscalls: fix some failure on arch X86_64

Garrett Cooper
2009-11-27T08:50:42Z

On Thu, Nov 26, 2009 at 10:49 PM, Garrett Cooper <yanegomi@gmail.com> wrote:
> On Thu, Nov 26, 2009 at 9:33 PM, liubo <liubo2009@cn.fujitsu.com> wrote:
>> Hi, Garrett
>> On 11/26/2009 07:11 PM, Garrett Cooper wrote:
>>
>> On Mon, Nov 16, 2009 at 12:53 AM, liubo <liubo2009@cn.fujitsu.com> wrote:
>>
>>
>> Hi, Subrata,
>> On 11/16/2009 04:13 PM, Subrata Modak wrote:
>>
>> Liubo,
>>
>> Are you sending an updated patch post this discussion ?
>>
>>
>>
>> Yes, I'll resend a updated patch about these rt_sigs.
>>
>> Regards--
>> Liubo
>>
>> Regards--
>> Subrata
>>
>> On Wed, 2009-11-11 at 13:03 +0800, Wei Yongjun wrote:
>>
>>
>> Mike Frysinger wrote:
>>
>>
>> On Tuesday 10 November 2009 04:38:30 liubo wrote:
>>
>>
>>
>> 1) rt_sigaction
>>     "sigaction" has the structure:
>>
>>  struct sigaction {
>>          __sighandler_t sa_handler;
>>          unsigned long sa_flags;
>>   #ifdef SA_RESTORER
>>           __sigrestore_t sa_restorer;
>>   #endif
>>           sigset_t sa_mask;               /* mask last for extensibility */
>>  };
>>
>>     However, on arch x86_64, if we directly get to call rt_sigaction,
>> the argument "sa_restorer" will not be fulfilled, and this will lead
>>  to segment fault.
>>     on arch x86_64, if sa_restorer is not set, kernel will lead to segment
>>  fault. In other arch, if sa_restorer is not set, kernel can do the correct
>>  work. To avoid this segment fault, we use glibc function
>> "int sigaction(...);" instead, which can fulfill the argument
>>  "sa_restorer".
>>
>>
>>
>> which defeats the purpose of the test.  there is no guarantee that the C
>> library sigaction function is implemented via the __NR_rt_sigaction syscall.
>>
>>
>>
>> In x86_64, it do this. And If we want to use __NR_rt_sigaction syscall
>> directly, we must fill the sa_restorer and set the RESTORER flag to
>> sa_mask. If we do not set the sa_restorer, kill will always cause
>> segment fault.
>>
>>
>>
>>
>>
>>
>> 2) rt_sigprocmask
>>     This failure contains two aspects,
>> the first is the segment fault as described in 1),
>> the second is that testcase uses a unknown signal 33 for test,
>> and this will lead sigaction cannot bind signal 33 to the action.
>>
>>     So, we attempt to use a known signal instead, such as 34.
>>
>>
>>
>> which is just as bogus and unportable.  if the test needs a real time
>> signal,
>> it should leverage the sigrtmin...sigrtmax defines.
>> -mike
>>
>>
>> I see what you mean about this testcase segfaulting now.
>>
>> I've done some exploring, and while sigaction does map to rt_sigaction
>> on ia64 and x86_64, it won't on arm, mips, s390*, sh, or x86.
>>
>> Furthermore, the problem is actually being caused by the fact that
>> we're not even calling sigaddset properly!
>>
>> gcooper@orangebox
>> /scratch/ltp-dev2/ltp/testcases/kernel/syscalls/rt_sigaction $ gdb
>> ./rt_sigaction01
>> GNU gdb 6.8
>> Copyright (C) 2008 Free Software Foundation, Inc.
>> License GPLv3+: GNU GPL version 3 or later
>> <http://gnu.org/licenses/gpl.html>
>> This is free software: you are free to change and redistribute it.
>> There is NO WARRANTY, to the extent permitted by law.  Type "show copying"
>> and "show warranty" for details.
>> This GDB was configured as "x86_64-pc-linux-gnu"...
>> (gdb) c
>> The program is not being run.
>> (gdb) r
>> Starting program:
>> /scratch/ltp-dev2/ltp/testcases/kernel/syscalls/rt_sigaction/rt_sigaction01
>> thread:20
>> [Thread debugging using libthread_db enabled]
>> rt_sigaction01    0  TINFO  :  sigaddset(..) failed
>> rt_sigaction01    1  TFAIL  :  rt_sigaction01 failed:
>> TEST_ERRNO=EINVAL(22): Invalid argument
>> rt_sigaction01    0  TINFO  :  sigaddset(..) failed
>> rt_sigaction01    2  TFAIL  :  rt_sigaction01 failed:
>> TEST_ERRNO=EINVAL(22): Invalid argument
>> rt_sigaction01    0  TINFO  :  sigaddset(..) failed
>> rt_sigaction01    3  TFAIL  :  rt_sigaction01 failed:
>> TEST_ERRNO=EINVAL(22): Invalid argument
>> rt_sigaction01    0  TINFO  :  sigaddset(..) failed
>> rt_sigaction01    4  TFAIL  :  rt_sigaction01 failed:
>> TEST_ERRNO=EINVAL(22): Invalid argument
>> rt_sigaction01    0  TINFO  :  sigaddset(..) failed
>> rt_sigaction01    5  TFAIL  :  rt_sigaction01 failed:
>> TEST_ERRNO=EINVAL(22): Invalid argument
>> rt_sigaction01    0  TINFO  :  sigaddset(..) failed
>> rt_sigaction01    6  TFAIL  :  rt_sigaction01 failed:
>> TEST_ERRNO=EINVAL(22): Invalid argument
>> rt_sigaction01    0  TINFO  :  sigaddset(..) failed
>> rt_sigaction01    7  TFAIL  :  rt_sigaction01 failed:
>> TEST_ERRNO=EINVAL(22): Invalid argument
>> rt_sigaction01    0  TINFO  :  sigaddset(..) failed
>> rt_sigaction01    8  TFAIL  :  rt_sigaction01 failed:
>> TEST_ERRNO=EINVAL(22): Invalid argument
>> rt_sigaction01    0  TINFO  :  sigaddset(..) failed
>> rt_sigaction01    9  TFAIL  :  rt_sigaction01 failed:
>> TEST_ERRNO=EINVAL(22): Invalid argument
>> rt_sigaction01    0  TINFO  :  sigaddset(..) failed
>> rt_sigaction01   10  TFAIL  :  rt_sigaction01 failed:
>> TEST_ERRNO=EINVAL(22): Invalid argument
>> rt_sigaction01    0  TINFO  :  sigaddset(..) failed
>> rt_sigaction01   11  TFAIL  :  rt_sigaction01 failed:
>> TEST_ERRNO=EINVAL(22): Invalid argument
>> rt_sigaction01    0  TINFO  :  sigaddset(..) failed
>> rt_sigaction01   12  TFAIL  :  rt_sigaction01 failed:
>> TEST_ERRNO=EINVAL(22): Invalid argument
>> rt_sigaction01    0  TINFO  :  sigaddset(..) failed
>> rt_sigaction01   13  TFAIL  :  rt_sigaction01 failed:
>> TEST_ERRNO=EINVAL(22): Invalid argument
>> rt_sigaction01    0  TINFO  :  sigaddset(..) failed
>> rt_sigaction01   14  TFAIL  :  rt_sigaction01 failed:
>> TEST_ERRNO=EINVAL(22): Invalid argument
>> rt_sigaction01    0  TINFO  :  sigaddset(..) failed
>> rt_sigaction01   15  TFAIL  :  rt_sigaction01 failed:
>> TEST_ERRNO=EINVAL(22): Invalid argument
>> rt_sigaction01    0  TINFO  :  sigaddset(..) failed
>> rt_sigaction01   16  TFAIL  :  rt_sigaction01 failed:
>> TEST_ERRNO=EINVAL(22): Invalid argument
>> rt_sigaction01    0  TINFO  :  sigaddset(..) failed
>> rt_sigaction01   17  TFAIL  :  rt_sigaction01 failed:
>> TEST_ERRNO=EINVAL(22): Invalid argument
>> rt_sigaction01    0  TINFO  :  sigaddset(..) failed
>> rt_sigaction01   18  TFAIL  :  rt_sigaction01 failed:
>> TEST_ERRNO=EINVAL(22): Invalid argument
>> rt_sigaction01    0  TINFO  :  sigaddset(..) failed
>> rt_sigaction01   19  TFAIL  :  rt_sigaction01 failed:
>> TEST_ERRNO=EINVAL(22): Invalid argument
>> rt_sigaction01    0  TINFO  :  sigaddset(..) failed
>> rt_sigaction01   20  TFAIL  :  rt_sigaction01 failed:
>> TEST_ERRNO=EINVAL(22): Invalid argument
>> rt_sigaction01    0  TINFO  :  sigaddset(..) failed
>> rt_sigaction01   21  TFAIL  :  rt_sigaction01 failed:
>> TEST_ERRNO=EINVAL(22): Invalid argument
>> rt_sigaction01    0  TINFO  :  sigaddset(..) failed
>> rt_sigaction01   22  TFAIL  :  rt_sigaction01 failed:
>> TEST_ERRNO=EINVAL(22): Invalid argument
>> rt_sigaction01    0  TINFO  :  sigaddset(..) failed
>> rt_sigaction01   23  TFAIL  :  rt_sigaction01 failed:
>> TEST_ERRNO=EINVAL(22): Invalid argument
>> rt_sigaction01    0  TINFO  :  sigaddset(..) failed
>> rt_sigaction01   24  TFAIL  :  rt_sigaction01 failed:
>> TEST_ERRNO=EINVAL(22): Invalid argument
>> rt_sigaction01    0  TINFO  :  sigaddset(..) failed
>> rt_sigaction01   25  TFAIL  :  rt_sigaction01 failed:
>> TEST_ERRNO=EINVAL(22): Invalid argument
>> rt_sigaction01    0  TINFO  :  sigaddset(..) failed
>> rt_sigaction01   26  TFAIL  :  rt_sigaction01 failed:
>> TEST_ERRNO=EINVAL(22): Invalid argument
>> rt_sigaction01    0  TINFO  :  sigaddset(..) failed
>> rt_sigaction01   27  TFAIL  :  rt_sigaction01 failed:
>> TEST_ERRNO=EINVAL(22): Invalid argument
>> rt_sigaction01    0  TINFO  :  sigaddset(..) failed
>> rt_sigaction01   28  TFAIL  :  rt_sigaction01 failed:
>> TEST_ERRNO=EINVAL(22): Invalid argument
>> rt_sigaction01    0  TINFO  :  sigaddset(..) failed
>> rt_sigaction01   29  TFAIL  :  rt_sigaction01 failed:
>> TEST_ERRNO=EINVAL(22): Invalid argument
>> rt_sigaction01    0  TINFO  :  sigaddset(..) failed
>> rt_sigaction01   30  TFAIL  :  rt_sigaction01 failed:
>> TEST_ERRNO=EINVAL(22): Invalid argument
>>
>> So, the test needs fixing, anyhow. After I fixed it, the test still
>> segfaulted >:( --
>>
>> gcooper@orangebox
>> /scratch/ltp-dev2/ltp/testcases/kernel/syscalls/rt_sigaction $ gdb
>> ./rt_sigaction01
>> GNU gdb 6.8
>> Copyright (C) 2008 Free Software Foundation, Inc.
>> License GPLv3+: GNU GPL version 3 or later
>> <http://gnu.org/licenses/gpl.html>
>> This is free software: you are free to change and redistribute it.
>> There is NO WARRANTY, to the extent permitted by law.  Type "show copying"
>> and "show warranty" for details.
>> This GDB was configured as "x86_64-pc-linux-gnu"...
>> (gdb) r
>> Starting program:
>> /scratch/ltp-dev2/ltp/testcases/kernel/syscalls/rt_sigaction/rt_sigaction01
>> thread:20
>> [Thread debugging using libthread_db enabled]
>> rt_sigaction01    0  TINFO  :  signal: 34
>> rt_sigaction01    0  TINFO  :  sa.sa_flags = SA_RESETHAND|SA_SIGINFO
>> [New Thread 0x7fdd451d66f0 (LWP 31927)]
>>
>> Program received signal SIG34, Real-time event 34.
>> [Switching to Thread 0x7fdd451d66f0 (LWP 31927)]
>> 0x00007fdd448944f7 in kill () from /lib/libc.so.6
>> (gdb) c
>> Continuing.
>>
>> Program received signal SIGSEGV, Segmentation fault.
>> 0x00007fdd448944f7 in kill () from /lib/libc.so.6
>>
>> So I tried to do some digging. glibc 2.8-20080602 does the following
>> for alpha, i386, and sysv:
>>
>>       result = INLINE_SYSCALL (rt_sigaction, 4,
>>                                sig, act ? __ptrvalue (&kact) : NULL,
>>                                oact ? __ptrvalue (&koact) : NULL, _NSIG /
>> 8);
>>
>> The kernel code for rt_sigaction in kernel/signal.c is as follows:
>>
>> #ifdef __ARCH_WANT_SYS_RT_SIGACTION
>> SYSCALL_DEFINE4(rt_sigaction, int, sig,
>>                 const struct sigaction __user *, act,
>>                 struct sigaction __user *, oact,
>>                 size_t, sigsetsize)
>> {
>>         struct k_sigaction new_sa, old_sa;
>>         int ret = -EINVAL;
>>
>>         /* XXX: Don't preclude handling different sized sigset_t's.  */
>>         if (sigsetsize != sizeof(sigset_t))
>>                 goto out;
>>
>>         if (act) {
>>                 if (copy_from_user(&new_sa.sa, act, sizeof(new_sa.sa)))
>>                         return -EFAULT;
>>         }
>>
>>         ret = do_sigaction(sig, act ? &new_sa : NULL, oact ? &old_sa :
>> NULL);
>>
>>         if (!ret && oact) {
>>                 if (copy_to_user(oact, &old_sa.sa, sizeof(old_sa.sa)))
>>                         return -EFAULT;
>>         }
>> out:
>>         return ret;
>> }
>>
>> This just blows my mind because rt_sigaction is just calling
>> do_sigaction, which is the same code as sigaction AFAICT, apart from
>> the fact that rt_sigaction completely disregards sa_restorer on some
>> architectures because it's obsolete, and requires the end-user to
>> specify a signal mask set (here's mips' version, which wasn't the same
>> as i386's version -- i386 had the old sa_restorer code):
>>
>> SYSCALL_DEFINE3(sigaction, int, sig, const struct sigaction __user *, act,
>>         struct sigaction __user *, oact)
>> {
>>         struct k_sigaction new_ka, old_ka;
>>         int ret;
>>         int err = 0;
>>
>>         if (act) {
>>                 old_sigset_t mask;
>>
>>                 if (!access_ok(VERIFY_READ, act, sizeof(*act)))
>>                         return -EFAULT;
>>                 err |= __get_user(new_ka.sa.sa_handler, &act->sa_handler);
>>                 err |= __get_user(new_ka.sa.sa_flags, &act->sa_flags);
>>                 err |= __get_user(mask, &act->sa_mask.sig[0]);
>>                 if (err)
>>                         return -EFAULT;
>>
>>                 siginitset(&new_ka.sa.sa_mask, mask);
>>         }
>>
>>         ret = do_sigaction(sig, act ? &new_ka : NULL, oact ? &old_ka :
>> NULL);
>>
>>         if (!ret && oact) {
>>                 if (!access_ok(VERIFY_WRITE, oact, sizeof(*oact)))
>>                         return -EFAULT;
>>                 err |= __put_user(old_ka.sa.sa_flags, &oact->sa_flags);
>>                 err |= __put_user(old_ka.sa.sa_handler, &oact->sa_handler);
>>                 err |= __put_user(old_ka.sa.sa_mask.sig[0],
>> oact->sa_mask.sig);
>>                 err |= __put_user(0, &oact->sa_mask.sig[1]);
>>                 err |= __put_user(0, &oact->sa_mask.sig[2]);
>>                 err |= __put_user(0, &oact->sa_mask.sig[3]);
>>                 if (err)
>>                         return -EFAULT;
>>         }
>>
>>         return ret;
>> }
>>
>> I dunno -- maybe someone else can read the kernel code better than me,
>> but it looks like there's zero real value to the rt_sigaction
>> testcases, because it can be covered by sigaction...
>>
>>
>>
>>     We just tell guys who use these testcases on arch x86_64 that
>>     "Syscall rt_sigaction cannot be called directly on arch x86_64.",
>>     can we?
>
>    It's not just x86_64 -- it's also ia64, and this may change
> depending on the version of glibc and linux sources, so... this really
> isn't a viable solution IMO.
>    Does anyone have any better suggestions, apart from just using a
> preprocessor macro that would execute rt_sig* via their non-rt
> equivalents in ltp_signal.h?

AHA! I think I discovered the kernel bug. rt_sigaction on x86_64
assumes that you're working in 32-bit space:

gcooper@orangebox /usr/src/linux $ grep -r rt_sigaction /usr/src/linux/arch/x86*
/usr/src/linux/arch/x86/ia32/sys_ia32.c:asmlinkage long
sys32_rt_sigaction(int sig, struct sigaction32 __user *act,
Binary file /usr/src/linux/arch/x86/ia32/sys_ia32.o matches
Binary file /usr/src/linux/arch/x86/ia32/built-in.o matches
/usr/src/linux/arch/x86/ia32/ia32entry.S: .quad sys32_rt_sigaction
Binary file /usr/src/linux/arch/x86/ia32/ia32entry.o matches
Binary file /usr/src/linux/arch/x86/kernel/syscall_64.o matches
Binary file /usr/src/linux/arch/x86/kernel/built-in.o matches
/usr/src/linux/arch/x86/kernel/syscall_table_32.S: .long sys_rt_sigaction
/usr/src/linux/arch/x86/include/asm/unistd_32.h:#define
__NR_rt_sigaction 174
/usr/src/linux/arch/x86/include/asm/unistd_64.h:#define
__NR_rt_sigaction 13
/usr/src/linux/arch/x86/include/asm/unistd_64.h:__SYSCALL(__NR_rt_sigaction,
sys_rt_sigaction)
/usr/src/linux/arch/x86/include/asm/sys_ia32.h:asmlinkage long
sys32_rt_sigaction(int, struct sigaction32 __user *,

Watch (compiled with -m32):

rt_sigaction01 0 TINFO : signal: 34
rt_sigaction01 0 TINFO : sa.sa_flags = SA_RESETHAND|SA_SIGINFO
rt_sigaction01 0 TINFO : Signal Handler Called with signal number 34
rt_sigaction01 0 TINFO : sa.sa_flags = SA_RESETHAND
rt_sigaction01 0 TINFO : Signal Handler Called with signal number 34
rt_sigaction01 0 TINFO : sa.sa_flags = SA_RESETHAND|SA_SIGINFO
rt_sigaction01 0 TINFO : Signal Handler Called with signal number 34
rt_sigaction01 0 TINFO : sa.sa_flags = SA_RESETHAND|SA_SIGINFO
rt_sigaction01 0 TINFO : Signal Handler Called with signal number 34
rt_sigaction01 0 TINFO : sa.sa_flags = SA_NOMASK
rt_sigaction01 0 TINFO : Signal Handler Called with signal number 34
rt_sigaction01 0 TINFO : signal: 35
rt_sigaction01 0 TINFO : sa.sa_flags = SA_RESETHAND|SA_SIGINFO
rt_sigaction01 0 TINFO : Signal Handler Called with signal number 35
rt_sigaction01 0 TINFO : sa.sa_flags = SA_RESETHAND
rt_sigaction01 0 TINFO : Signal Handler Called with signal number 35
rt_sigaction01 0 TINFO : sa.sa_flags = SA_RESETHAND|SA_SIGINFO
rt_sigaction01 0 TINFO : Signal Handler Called with signal number 35
rt_sigaction01 0 TINFO : sa.sa_flags = SA_RESETHAND|SA_SIGINFO
rt_sigaction01 0 TINFO : Signal Handler Called with signal number 35
rt_sigaction01 0 TINFO : sa.sa_flags = SA_NOMASK
rt_sigaction01 0 TINFO : Signal Handler Called with signal number 35
rt_sigaction01 0 TINFO : signal: 36
rt_sigaction01 0 TINFO : sa.sa_flags = SA_RESETHAND|SA_SIGINFO
rt_sigaction01 0 TINFO : Signal Handler Called with signal number 36
rt_sigaction01 0 TINFO : sa.sa_flags = SA_RESETHAND
rt_sigaction01 0 TINFO : Signal Handler Called with signal number 36
rt_sigaction01 0 TINFO : sa.sa_flags = SA_RESETHAND|SA_SIGINFO
rt_sigaction01 0 TINFO : Signal Handler Called with signal number 36
rt_sigaction01 0 TINFO : sa.sa_flags = SA_RESETHAND|SA_SIGINFO
rt_sigaction01 0 TINFO : Signal Handler Called with signal number 36
rt_sigaction01 0 TINFO : sa.sa_flags = SA_NOMASK
rt_sigaction01 0 TINFO : Signal Handler Called with signal number 36
rt_sigaction01 0 TINFO : signal: 37
rt_sigaction01 0 TINFO : sa.sa_flags = SA_RESETHAND|SA_SIGINFO
rt_sigaction01 0 TINFO : Signal Handler Called with signal number 37
rt_sigaction01 0 TINFO : sa.sa_flags = SA_RESETHAND
rt_sigaction01 0 TINFO : Signal Handler Called with signal number 37
rt_sigaction01 0 TINFO : sa.sa_flags = SA_RESETHAND|SA_SIGINFO
rt_sigaction01 0 TINFO : Signal Handler Called with signal number 37
rt_sigaction01 0 TINFO : sa.sa_flags = SA_RESETHAND|SA_SIGINFO
rt_sigaction01 0 TINFO : Signal Handler Called with signal number 37
rt_sigaction01 0 TINFO : sa.sa_flags = SA_NOMASK
rt_sigaction01 0 TINFO : Signal Handler Called with signal number 37
rt_sigaction01 0 TINFO : signal: 38
rt_sigaction01 0 TINFO : sa.sa_flags = SA_RESETHAND|SA_SIGINFO
rt_sigaction01 0 TINFO : Signal Handler Called with signal number 38
rt_sigaction01 0 TINFO : sa.sa_flags = SA_RESETHAND
rt_sigaction01 0 TINFO : Signal Handler Called with signal number 38
rt_sigaction01 0 TINFO : sa.sa_flags = SA_RESETHAND|SA_SIGINFO
rt_sigaction01 0 TINFO : Signal Handler Called with signal number 38
rt_sigaction01 0 TINFO : sa.sa_flags = SA_RESETHAND|SA_SIGINFO
rt_sigaction01 0 TINFO : Signal Handler Called with signal number 38
rt_sigaction01 0 TINFO : sa.sa_flags = SA_NOMASK
rt_sigaction01 0 TINFO : Signal Handler Called with signal number 38
rt_sigaction01 0 TINFO : signal: 39
rt_sigaction01 0 TINFO : sa.sa_flags = SA_RESETHAND|SA_SIGINFO
rt_sigaction01 0 TINFO : Signal Handler Called with signal number 39
rt_sigaction01 0 TINFO : sa.sa_flags = SA_RESETHAND
rt_sigaction01 0 TINFO : Signal Handler Called with signal number 39
rt_sigaction01 0 TINFO : sa.sa_flags = SA_RESETHAND|SA_SIGINFO
rt_sigaction01 0 TINFO : Signal Handler Called with signal number 39
rt_sigaction01 0 TINFO : sa.sa_flags = SA_RESETHAND|SA_SIGINFO
rt_sigaction01 0 TINFO : Signal Handler Called with signal number 39
rt_sigaction01 0 TINFO : sa.sa_flags = SA_NOMASK
rt_sigaction01 0 TINFO : Signal Handler Called with signal number 39
rt_sigaction01 0 TINFO : signal: 40
rt_sigaction01 0 TINFO : sa.sa_flags = SA_RESETHAND|SA_SIGINFO
rt_sigaction01 0 TINFO : Signal Handler Called with signal number 40
rt_sigaction01 0 TINFO : sa.sa_flags = SA_RESETHAND
rt_sigaction01 0 TINFO : Signal Handler Called with signal number 40
rt_sigaction01 0 TINFO : sa.sa_flags = SA_RESETHAND|SA_SIGINFO
rt_sigaction01 0 TINFO : Signal Handler Called with signal number 40
rt_sigaction01 0 TINFO : sa.sa_flags = SA_RESETHAND|SA_SIGINFO
rt_sigaction01 0 TINFO : Signal Handler Called with signal number 40
rt_sigaction01 0 TINFO : sa.sa_flags = SA_NOMASK
rt_sigaction01 0 TINFO : Signal Handler Called with signal number 40
rt_sigaction01 0 TINFO : signal: 41
rt_sigaction01 0 TINFO : sa.sa_flags = SA_RESETHAND|SA_SIGINFO
rt_sigaction01 0 TINFO : Signal Handler Called with signal number 41
rt_sigaction01 0 TINFO : sa.sa_flags = SA_RESETHAND
rt_sigaction01 0 TINFO : Signal Handler Called with signal number 41
rt_sigaction01 0 TINFO : sa.sa_flags = SA_RESETHAND|SA_SIGINFO
rt_sigaction01 0 TINFO : Signal Handler Called with signal number 41
rt_sigaction01 0 TINFO : sa.sa_flags = SA_RESETHAND|SA_SIGINFO
rt_sigaction01 0 TINFO : Signal Handler Called with signal number 41
rt_sigaction01 0 TINFO : sa.sa_flags = SA_NOMASK
rt_sigaction01 0 TINFO : Signal Handler Called with signal number 41
rt_sigaction01 0 TINFO : signal: 42
rt_sigaction01 0 TINFO : sa.sa_flags = SA_RESETHAND|SA_SIGINFO
rt_sigaction01 0 TINFO : Signal Handler Called with signal number 42
rt_sigaction01 0 TINFO : sa.sa_flags = SA_RESETHAND
rt_sigaction01 0 TINFO : Signal Handler Called with signal number 42
rt_sigaction01 0 TINFO : sa.sa_flags = SA_RESETHAND|SA_SIGINFO
rt_sigaction01 0 TINFO : Signal Handler Called with signal number 42
rt_sigaction01 0 TINFO : sa.sa_flags = SA_RESETHAND|SA_SIGINFO
rt_sigaction01 0 TINFO : Signal Handler Called with signal number 42
rt_sigaction01 0 TINFO : sa.sa_flags = SA_NOMASK
rt_sigaction01 0 TINFO : Signal Handler Called with signal number 42
rt_sigaction01 0 TINFO : signal: 43
rt_sigaction01 0 TINFO : sa.sa_flags = SA_RESETHAND|SA_SIGINFO
rt_sigaction01 0 TINFO : Signal Handler Called with signal number 43
rt_sigaction01 0 TINFO : sa.sa_flags = SA_RESETHAND
rt_sigaction01 0 TINFO : Signal Handler Called with signal number 43
rt_sigaction01 0 TINFO : sa.sa_flags = SA_RESETHAND|SA_SIGINFO
rt_sigaction01 0 TINFO : Signal Handler Called with signal number 43
rt_sigaction01 0 TINFO : sa.sa_flags = SA_RESETHAND|SA_SIGINFO
rt_sigaction01 0 TINFO : Signal Handler Called with signal number 43
rt_sigaction01 0 TINFO : sa.sa_flags = SA_NOMASK
rt_sigaction01 0 TINFO : Signal Handler Called with signal number 43
rt_sigaction01 0 TINFO : signal: 44
rt_sigaction01 0 TINFO : sa.sa_flags = SA_RESETHAND|SA_SIGINFO
rt_sigaction01 0 TINFO : Signal Handler Called with signal number 44
rt_sigaction01 0 TINFO : sa.sa_flags = SA_RESETHAND
rt_sigaction01 0 TINFO : Signal Handler Called with signal number 44
rt_sigaction01 0 TINFO : sa.sa_flags = SA_RESETHAND|SA_SIGINFO
rt_sigaction01 0 TINFO : Signal Handler Called with signal number 44
rt_sigaction01 0 TINFO : sa.sa_flags = SA_RESETHAND|SA_SIGINFO
rt_sigaction01 0 TINFO : Signal Handler Called with signal number 44
rt_sigaction01 0 TINFO : sa.sa_flags = SA_NOMASK
rt_sigaction01 0 TINFO : Signal Handler Called with signal number 44
rt_sigaction01 0 TINFO : signal: 45
rt_sigaction01 0 TINFO : sa.sa_flags = SA_RESETHAND|SA_SIGINFO
rt_sigaction01 0 TINFO : Signal Handler Called with signal number 45
rt_sigaction01 0 TINFO : sa.sa_flags = SA_RESETHAND
rt_sigaction01 0 TINFO : Signal Handler Called with signal number 45
rt_sigaction01 0 TINFO : sa.sa_flags = SA_RESETHAND|SA_SIGINFO
rt_sigaction01 0 TINFO : Signal Handler Called with signal number 45
rt_sigaction01 0 TINFO : sa.sa_flags = SA_RESETHAND|SA_SIGINFO
rt_sigaction01 0 TINFO : Signal Handler Called with signal number 45
rt_sigaction01 0 TINFO : sa.sa_flags = SA_NOMASK
rt_sigaction01 0 TINFO : Signal Handler Called with signal number 45
rt_sigaction01 0 TINFO : signal: 46
rt_sigaction01 0 TINFO : sa.sa_flags = SA_RESETHAND|SA_SIGINFO
rt_sigaction01 0 TINFO : Signal Handler Called with signal number 46
rt_sigaction01 0 TINFO : sa.sa_flags = SA_RESETHAND
rt_sigaction01 0 TINFO : Signal Handler Called with signal number 46
rt_sigaction01 0 TINFO : sa.sa_flags = SA_RESETHAND|SA_SIGINFO
rt_sigaction01 0 TINFO : Signal Handler Called with signal number 46
rt_sigaction01 0 TINFO : sa.sa_flags = SA_RESETHAND|SA_SIGINFO
rt_sigaction01 0 TINFO : Signal Handler Called with signal number 46
rt_sigaction01 0 TINFO : sa.sa_flags = SA_NOMASK
rt_sigaction01 0 TINFO : Signal Handler Called with signal number 46
rt_sigaction01 0 TINFO : signal: 47
rt_sigaction01 0 TINFO : sa.sa_flags = SA_RESETHAND|SA_SIGINFO
rt_sigaction01 0 TINFO : Signal Handler Called with signal number 47
rt_sigaction01 0 TINFO : sa.sa_flags = SA_RESETHAND
rt_sigaction01 0 TINFO : Signal Handler Called with signal number 47
rt_sigaction01 0 TINFO : sa.sa_flags = SA_RESETHAND|SA_SIGINFO
rt_sigaction01 0 TINFO : Signal Handler Called with signal number 47
rt_sigaction01 0 TINFO : sa.sa_flags = SA_RESETHAND|SA_SIGINFO
rt_sigaction01 0 TINFO : Signal Handler Called with signal number 47
rt_sigaction01 0 TINFO : sa.sa_flags = SA_NOMASK
rt_sigaction01 0 TINFO : Signal Handler Called with signal number 47
rt_sigaction01 0 TINFO : signal: 48
rt_sigaction01 0 TINFO : sa.sa_flags = SA_RESETHAND|SA_SIGINFO
rt_sigaction01 0 TINFO : Signal Handler Called with signal number 48
rt_sigaction01 0 TINFO : sa.sa_flags = SA_RESETHAND
rt_sigaction01 0 TINFO : Signal Handler Called with signal number 48
rt_sigaction01 0 TINFO : sa.sa_flags = SA_RESETHAND|SA_SIGINFO
rt_sigaction01 0 TINFO : Signal Handler Called with signal number 48
rt_sigaction01 0 TINFO : sa.sa_flags = SA_RESETHAND|SA_SIGINFO
rt_sigaction01 0 TINFO : Signal Handler Called with signal number 48
rt_sigaction01 0 TINFO : sa.sa_flags = SA_NOMASK
rt_sigaction01 0 TINFO : Signal Handler Called with signal number 48
rt_sigaction01 0 TINFO : signal: 49
rt_sigaction01 0 TINFO : sa.sa_flags = SA_RESETHAND|SA_SIGINFO
rt_sigaction01 0 TINFO : Signal Handler Called with signal number 49
rt_sigaction01 0 TINFO : sa.sa_flags = SA_RESETHAND
rt_sigaction01 0 TINFO : Signal Handler Called with signal number 49
rt_sigaction01 0 TINFO : sa.sa_flags = SA_RESETHAND|SA_SIGINFO
rt_sigaction01 0 TINFO : Signal Handler Called with signal number 49
rt_sigaction01 0 TINFO : sa.sa_flags = SA_RESETHAND|SA_SIGINFO
rt_sigaction01 0 TINFO : Signal Handler Called with signal number 49
rt_sigaction01 0 TINFO : sa.sa_flags = SA_NOMASK
rt_sigaction01 0 TINFO : Signal Handler Called with signal number 49
rt_sigaction01 0 TINFO : signal: 50
rt_sigaction01 0 TINFO : sa.sa_flags = SA_RESETHAND|SA_SIGINFO
rt_sigaction01 0 TINFO : Signal Handler Called with signal number 50
rt_sigaction01 0 TINFO : sa.sa_flags = SA_RESETHAND
rt_sigaction01 0 TINFO : Signal Handler Called with signal number 50
rt_sigaction01 0 TINFO : sa.sa_flags = SA_RESETHAND|SA_SIGINFO
rt_sigaction01 0 TINFO : Signal Handler Called with signal number 50
rt_sigaction01 0 TINFO : sa.sa_flags = SA_RESETHAND|SA_SIGINFO
rt_sigaction01 0 TINFO : Signal Handler Called with signal number 50
rt_sigaction01 0 TINFO : sa.sa_flags = SA_NOMASK
rt_sigaction01 0 TINFO : Signal Handler Called with signal number 50
rt_sigaction01 0 TINFO : signal: 51
rt_sigaction01 0 TINFO : sa.sa_flags = SA_RESETHAND|SA_SIGINFO
rt_sigaction01 0 TINFO : Signal Handler Called with signal number 51
rt_sigaction01 0 TINFO : sa.sa_flags = SA_RESETHAND
rt_sigaction01 0 TINFO : Signal Handler Called with signal number 51
rt_sigaction01 0 TINFO : sa.sa_flags = SA_RESETHAND|SA_SIGINFO
rt_sigaction01 0 TINFO : Signal Handler Called with signal number 51
rt_sigaction01 0 TINFO : sa.sa_flags = SA_RESETHAND|SA_SIGINFO
rt_sigaction01 0 TINFO : Signal Handler Called with signal number 51
rt_sigaction01 0 TINFO : sa.sa_flags = SA_NOMASK
rt_sigaction01 0 TINFO : Signal Handler Called with signal number 51
rt_sigaction01 0 TINFO : signal: 52
rt_sigaction01 0 TINFO : sa.sa_flags = SA_RESETHAND|SA_SIGINFO
rt_sigaction01 0 TINFO : Signal Handler Called with signal number 52
rt_sigaction01 0 TINFO : sa.sa_flags = SA_RESETHAND
rt_sigaction01 0 TINFO : Signal Handler Called with signal number 52
rt_sigaction01 0 TINFO : sa.sa_flags = SA_RESETHAND|SA_SIGINFO
rt_sigaction01 0 TINFO : Signal Handler Called with signal number 52
rt_sigaction01 0 TINFO : sa.sa_flags = SA_RESETHAND|SA_SIGINFO
rt_sigaction01 0 TINFO : Signal Handler Called with signal number 52
rt_sigaction01 0 TINFO : sa.sa_flags = SA_NOMASK
rt_sigaction01 0 TINFO : Signal Handler Called with signal number 52
rt_sigaction01 0 TINFO : signal: 53
rt_sigaction01 0 TINFO : sa.sa_flags = SA_RESETHAND|SA_SIGINFO
rt_sigaction01 0 TINFO : Signal Handler Called with signal number 53
rt_sigaction01 0 TINFO : sa.sa_flags = SA_RESETHAND
rt_sigaction01 0 TINFO : Signal Handler Called with signal number 53
rt_sigaction01 0 TINFO : sa.sa_flags = SA_RESETHAND|SA_SIGINFO
rt_sigaction01 0 TINFO : Signal Handler Called with signal number 53
rt_sigaction01 0 TINFO : sa.sa_flags = SA_RESETHAND|SA_SIGINFO
rt_sigaction01 0 TINFO : Signal Handler Called with signal number 53
rt_sigaction01 0 TINFO : sa.sa_flags = SA_NOMASK
rt_sigaction01 0 TINFO : Signal Handler Called with signal number 53
rt_sigaction01 0 TINFO : signal: 54
rt_sigaction01 0 TINFO : sa.sa_flags = SA_RESETHAND|SA_SIGINFO
rt_sigaction01 0 TINFO : Signal Handler Called with signal number 54
rt_sigaction01 0 TINFO : sa.sa_flags = SA_RESETHAND
rt_sigaction01 0 TINFO : Signal Handler Called with signal number 54
rt_sigaction01 0 TINFO : sa.sa_flags = SA_RESETHAND|SA_SIGINFO
rt_sigaction01 0 TINFO : Signal Handler Called with signal number 54
rt_sigaction01 0 TINFO : sa.sa_flags = SA_RESETHAND|SA_SIGINFO
rt_sigaction01 0 TINFO : Signal Handler Called with signal number 54
rt_sigaction01 0 TINFO : sa.sa_flags = SA_NOMASK
rt_sigaction01 0 TINFO : Signal Handler Called with signal number 54
rt_sigaction01 0 TINFO : signal: 55
rt_sigaction01 0 TINFO : sa.sa_flags = SA_RESETHAND|SA_SIGINFO
rt_sigaction01 0 TINFO : Signal Handler Called with signal number 55
rt_sigaction01 0 TINFO : sa.sa_flags = SA_RESETHAND
rt_sigaction01 0 TINFO : Signal Handler Called with signal number 55
rt_sigaction01 0 TINFO : sa.sa_flags = SA_RESETHAND|SA_SIGINFO
rt_sigaction01 0 TINFO : Signal Handler Called with signal number 55
rt_sigaction01 0 TINFO : sa.sa_flags = SA_RESETHAND|SA_SIGINFO
rt_sigaction01 0 TINFO : Signal Handler Called with signal number 55
rt_sigaction01 0 TINFO : sa.sa_flags = SA_NOMASK
rt_sigaction01 0 TINFO : Signal Handler Called with signal number 55
rt_sigaction01 0 TINFO : signal: 56
rt_sigaction01 0 TINFO : sa.sa_flags = SA_RESETHAND|SA_SIGINFO
rt_sigaction01 0 TINFO : Signal Handler Called with signal number 56
rt_sigaction01 0 TINFO : sa.sa_flags = SA_RESETHAND
rt_sigaction01 0 TINFO : Signal Handler Called with signal number 56
rt_sigaction01 0 TINFO : sa.sa_flags = SA_RESETHAND|SA_SIGINFO
rt_sigaction01 0 TINFO : Signal Handler Called with signal number 56
rt_sigaction01 0 TINFO : sa.sa_flags = SA_RESETHAND|SA_SIGINFO
rt_sigaction01 0 TINFO : Signal Handler Called with signal number 56
rt_sigaction01 0 TINFO : sa.sa_flags = SA_NOMASK
rt_sigaction01 0 TINFO : Signal Handler Called with signal number 56
rt_sigaction01 0 TINFO : signal: 57
rt_sigaction01 0 TINFO : sa.sa_flags = SA_RESETHAND|SA_SIGINFO
rt_sigaction01 0 TINFO : Signal Handler Called with signal number 57
rt_sigaction01 0 TINFO : sa.sa_flags = SA_RESETHAND
rt_sigaction01 0 TINFO : Signal Handler Called with signal number 57
rt_sigaction01 0 TINFO : sa.sa_flags = SA_RESETHAND|SA_SIGINFO
rt_sigaction01 0 TINFO : Signal Handler Called with signal number 57
rt_sigaction01 0 TINFO : sa.sa_flags = SA_RESETHAND|SA_SIGINFO
rt_sigaction01 0 TINFO : Signal Handler Called with signal number 57
rt_sigaction01 0 TINFO : sa.sa_flags = SA_NOMASK
rt_sigaction01 0 TINFO : Signal Handler Called with signal number 57
rt_sigaction01 0 TINFO : signal: 58
rt_sigaction01 0 TINFO : sa.sa_flags = SA_RESETHAND|SA_SIGINFO
rt_sigaction01 0 TINFO : Signal Handler Called with signal number 58
rt_sigaction01 0 TINFO : sa.sa_flags = SA_RESETHAND
rt_sigaction01 0 TINFO : Signal Handler Called with signal number 58
rt_sigaction01 0 TINFO : sa.sa_flags = SA_RESETHAND|SA_SIGINFO
rt_sigaction01 0 TINFO : Signal Handler Called with signal number 58
rt_sigaction01 0 TINFO : sa.sa_flags = SA_RESETHAND|SA_SIGINFO
rt_sigaction01 0 TINFO : Signal Handler Called with signal number 58
rt_sigaction01 0 TINFO : sa.sa_flags = SA_NOMASK
rt_sigaction01 0 TINFO : Signal Handler Called with signal number 58
rt_sigaction01 0 TINFO : signal: 59
rt_sigaction01 0 TINFO : sa.sa_flags = SA_RESETHAND|SA_SIGINFO
rt_sigaction01 0 TINFO : Signal Handler Called with signal number 59
rt_sigaction01 0 TINFO : sa.sa_flags = SA_RESETHAND
rt_sigaction01 0 TINFO : Signal Handler Called with signal number 59
rt_sigaction01 0 TINFO : sa.sa_flags = SA_RESETHAND|SA_SIGINFO
rt_sigaction01 0 TINFO : Signal Handler Called with signal number 59
rt_sigaction01 0 TINFO : sa.sa_flags = SA_RESETHAND|SA_SIGINFO
rt_sigaction01 0 TINFO : Signal Handler Called with signal number 59
rt_sigaction01 0 TINFO : sa.sa_flags = SA_NOMASK
rt_sigaction01 0 TINFO : Signal Handler Called with signal number 59
rt_sigaction01 0 TINFO : signal: 60
rt_sigaction01 0 TINFO : sa.sa_flags = SA_RESETHAND|SA_SIGINFO
rt_sigaction01 0 TINFO : Signal Handler Called with signal number 60
rt_sigaction01 0 TINFO : sa.sa_flags = SA_RESETHAND
rt_sigaction01 0 TINFO : Signal Handler Called with signal number 60
rt_sigaction01 0 TINFO : sa.sa_flags = SA_RESETHAND|SA_SIGINFO
rt_sigaction01 0 TINFO : Signal Handler Called with signal number 60
rt_sigaction01 0 TINFO : sa.sa_flags = SA_RESETHAND|SA_SIGINFO
rt_sigaction01 0 TINFO : Signal Handler Called with signal number 60
rt_sigaction01 0 TINFO : sa.sa_flags = SA_NOMASK
rt_sigaction01 0 TINFO : Signal Handler Called with signal number 60
rt_sigaction01 0 TINFO : signal: 61
rt_sigaction01 0 TINFO : sa.sa_flags = SA_RESETHAND|SA_SIGINFO
rt_sigaction01 0 TINFO : Signal Handler Called with signal number 61
rt_sigaction01 0 TINFO : sa.sa_flags = SA_RESETHAND
rt_sigaction01 0 TINFO : Signal Handler Called with signal number 61
rt_sigaction01 0 TINFO : sa.sa_flags = SA_RESETHAND|SA_SIGINFO
rt_sigaction01 0 TINFO : Signal Handler Called with signal number 61
rt_sigaction01 0 TINFO : sa.sa_flags = SA_RESETHAND|SA_SIGINFO
rt_sigaction01 0 TINFO : Signal Handler Called with signal number 61
rt_sigaction01 0 TINFO : sa.sa_flags = SA_NOMASK
rt_sigaction01 0 TINFO : Signal Handler Called with signal number 61
rt_sigaction01 0 TINFO : signal: 62
rt_sigaction01 0 TINFO : sa.sa_flags = SA_RESETHAND|SA_SIGINFO
rt_sigaction01 0 TINFO : Signal Handler Called with signal number 62
rt_sigaction01 0 TINFO : sa.sa_flags = SA_RESETHAND
rt_sigaction01 0 TINFO : Signal Handler Called with signal number 62
rt_sigaction01 0 TINFO : sa.sa_flags = SA_RESETHAND|SA_SIGINFO
rt_sigaction01 0 TINFO : Signal Handler Called with signal number 62
rt_sigaction01 0 TINFO : sa.sa_flags = SA_RESETHAND|SA_SIGINFO
rt_sigaction01 0 TINFO : Signal Handler Called with signal number 62
rt_sigaction01 0 TINFO : sa.sa_flags = SA_NOMASK
rt_sigaction01 0 TINFO : Signal Handler Called with signal number 62
rt_sigaction01 0 TINFO : signal: 63
rt_sigaction01 0 TINFO : sa.sa_flags = SA_RESETHAND|SA_SIGINFO
rt_sigaction01 0 TINFO : Signal Handler Called with signal number 63
rt_sigaction01 0 TINFO : sa.sa_flags = SA_RESETHAND
rt_sigaction01 0 TINFO : Signal Handler Called with signal number 63
rt_sigaction01 0 TINFO : sa.sa_flags = SA_RESETHAND|SA_SIGINFO
rt_sigaction01 0 TINFO : Signal Handler Called with signal number 63
rt_sigaction01 0 TINFO : sa.sa_flags = SA_RESETHAND|SA_SIGINFO
rt_sigaction01 0 TINFO : Signal Handler Called with signal number 63
rt_sigaction01 0 TINFO : sa.sa_flags = SA_NOMASK
rt_sigaction01 0 TINFO : Signal Handler Called with signal number 63
rt_sigaction01 0 TINFO : signal: 64
rt_sigaction01 0 TINFO : sa.sa_flags = SA_RESETHAND|SA_SIGINFO
rt_sigaction01 0 TINFO : Signal Handler Called with signal number 64
rt_sigaction01 0 TINFO : sa.sa_flags = SA_RESETHAND
rt_sigaction01 0 TINFO : Signal Handler Called with signal number 64
rt_sigaction01 0 TINFO : sa.sa_flags = SA_RESETHAND|SA_SIGINFO
rt_sigaction01 0 TINFO : Signal Handler Called with signal number 64
rt_sigaction01 0 TINFO : sa.sa_flags = SA_RESETHAND|SA_SIGINFO
rt_sigaction01 0 TINFO : Signal Handler Called with signal number 64
rt_sigaction01 0 TINFO : sa.sa_flags = SA_NOMASK
rt_sigaction01 0 TINFO : Signal Handler Called with signal number 64

So from what I can tell, the sucker isn't properly translating
something in 64-bit space, and instead of properly trapping the issue,
it's segfaulting and dying -_-.

Ultimately the problem from what I can see is that bi-arch (32-bit on
64-bit kernel) 64-bit rt_sig* support is broken. I don't know about
straight, non-bi-arch 64-bit rt_sig* support...

If someone could verify this with a little more kernel experience, or
someone could direct me on how the issue could be trapped in gdb so I
could inspect the registers and ensure the traps are or aren't being
done properly, that would be helpful.

Thanks!
-Garrett

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