diff options
| author | Michael Karcher <karcher@physik.fu-berlin.de> | 2017-02-25 12:05:17 +0100 |
|---|---|---|
| committer | Laurent Vivier <laurent@vivier.eu> | 2017-02-27 23:10:02 +0100 |
| commit | 59ebb6e451ffe5d4ccb5a62ee6646ed418361ef0 (patch) | |
| tree | b034fc145cdcd159ff3f80dd5b2d83631b1939a3 /linux-user | |
| parent | 3219de458c497e15fd3b0c3ba3c1952fc34fe3da (diff) | |
linux-user: fix do_rt_sigreturn on m68k linux userspace emulation
do_rt_sigreturn uses an uninitialised local variable instead of fetching
the old signal mask directly from the signal frame when restoring the mask,
so the signal mask is undefined after do_rt_sigreturn. As the signal
frame data is in target-endian order, target_to_host_sigset instead of
target_to_host_sigset_internal is required.
do_sigreturn is correct in using target_to_host_sigset_internal, because
get_user already did the endianness conversion.
Signed-off-by: Michael Karcher <karcher@physik.fu-berlin.de>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Message-Id: <20170225110517.2832-3-laurent@vivier.eu>
Diffstat (limited to 'linux-user')
| -rw-r--r-- | linux-user/signal.c | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/linux-user/signal.c b/linux-user/signal.c index 99adfc29e4..a67db04e1a 100644 --- a/linux-user/signal.c +++ b/linux-user/signal.c @@ -5851,14 +5851,13 @@ long do_rt_sigreturn(CPUM68KState *env) { struct target_rt_sigframe *frame; abi_ulong frame_addr = env->aregs[7] - 4; - target_sigset_t target_set; sigset_t set; trace_user_do_rt_sigreturn(env, frame_addr); if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1)) goto badframe; - target_to_host_sigset_internal(&set, &target_set); + target_to_host_sigset(&set, &frame->uc.tuc_sigmask); set_sigmask(&set); /* restore registers */ |