| From | Greg Kroah-Hartman <> | Subject | [PATCH 5.15 261/279] signal/sparc32: In setup_rt_frame and setup_fram use force_fatal_sig | Date | Wed, 24 Nov 2021 12:59:08 +0100 |
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From: Eric W. Biederman <ebiederm@xmission.com>
commit 086ec444f86660e103de8945d0dcae9b67132ac9 upstream.
Modify the 32bit version of setup_rt_frame and setup_frame to act similar to the 64bit version of setup_rt_frame and fail with a signal instead of calling do_exit.
Replacing do_exit(SIGILL) with force_fatal_signal(SIGILL) ensures that the process will be terminated cleanly when the stack frame is invalid, instead of just killing off a single thread and leaving the process is a weird state.
Cc: David Miller <davem@davemloft.net> Cc: sparclinux@vger.kernel.org Link: https://lkml.kernel.org/r/20211020174406.17889-16-ebiederm@xmission.com Signed-off-by: Eric W. Biederman <ebiederm@xmission.com> Cc: Thomas Backlund <tmb@iki.fi> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> --- arch/sparc/kernel/signal_32.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)
--- a/arch/sparc/kernel/signal_32.c +++ b/arch/sparc/kernel/signal_32.c @@ -244,7 +244,7 @@ static int setup_frame(struct ksignal *k get_sigframe(ksig, regs, sigframe_size); if (invalid_frame_pointer(sf, sigframe_size)) { - do_exit(SIGILL); + force_fatal_sig(SIGILL); return -EINVAL; } @@ -336,7 +336,7 @@ static int setup_rt_frame(struct ksignal sf = (struct rt_signal_frame __user *) get_sigframe(ksig, regs, sigframe_size); if (invalid_frame_pointer(sf, sigframe_size)) { - do_exit(SIGILL); + force_fatal_sig(SIGILL); return -EINVAL; }
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