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a3616a3c02
In the fpsp040 code when copyin or copyout fails call force_sigsegv(SIGSEGV) instead of do_exit(SIGSEGV). This solves a couple of problems. Because do_exit embeds the ptrace stop PTRACE_EVENT_EXIT a complete stack frame needs to be present for that to work correctly. There is always the information needed for a ptrace stop where get_signal is called. So exiting with a signal solves the ptrace issue. Further exiting with a signal ensures that all of the threads in a process are killed not just the thread that malfunctioned. Which avoids confusing userspace. To make force_sigsegv(SIGSEGV) work in fpsp040_die modify the code to save all of the registers and jump to ret_from_exception (which ultimately calls get_signal) after fpsp040_die returns. v2: Updated the branches to use gas's pseudo ops that automatically calculate the best branch instruction to use for the purpose. v1: https://lkml.kernel.org/r/87a6m8kgtx.fsf_-_@disp2133 Link: https://lkml.kernel.org/r/87tukghjfs.fsf_-_@disp2133 Acked-by: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com> |
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.. | ||
bindec.S | ||
binstr.S | ||
bugfix.S | ||
decbin.S | ||
do_func.S | ||
fpsp.h | ||
gen_except.S | ||
get_op.S | ||
kernel_ex.S | ||
Makefile | ||
README | ||
res_func.S | ||
round.S | ||
sacos.S | ||
sasin.S | ||
satan.S | ||
satanh.S | ||
scale.S | ||
scosh.S | ||
setox.S | ||
sgetem.S | ||
sint.S | ||
skeleton.S | ||
slog2.S | ||
slogn.S | ||
smovecr.S | ||
srem_mod.S | ||
ssin.S | ||
ssinh.S | ||
stan.S | ||
stanh.S | ||
sto_res.S | ||
stwotox.S | ||
tbldo.S | ||
util.S | ||
x_bsun.S | ||
x_fline.S | ||
x_operr.S | ||
x_ovfl.S | ||
x_snan.S | ||
x_store.S | ||
x_unfl.S | ||
x_unimp.S | ||
x_unsupp.S |
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