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signal/sparc32: In setup_rt_frame and setup_fram use force_fatal_sig

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commit 086ec444f8 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>
This commit is contained in:
Eric W. Biederman 2021-10-20 12:44:02 -05:00 committed by Greg Kroah-Hartman
parent 905e860941
commit 1998d85c83
1 changed files with 2 additions and 2 deletions
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4
arch/sparc/kernel/signal_32.c
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@ -244,7 +244,7 @@ static int setup_frame(struct ksignal *ksig, struct pt_regs *regs,
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 *ksig, struct pt_regs *regs,
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;
}