From: He Sheng hesheng@wxiat.com
Sunway inclusion category: feature bugzilla: https://gitee.com/openeuler/kernel/issues/I56OLG
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Suppose that parent traces child which masks all the signals. If trap or fault occurs on child, it will pass through. To do it right, we have to force signal and fault in that case.
Signed-off-by: He Sheng hesheng@wxiat.com
Signed-off-by: Gu Zitao guzitao@wxiat.com --- arch/sw_64/kernel/signal.c | 8 ++++---- arch/sw_64/kernel/traps.c | 18 +++++++----------- 2 files changed, 11 insertions(+), 15 deletions(-)
diff --git a/arch/sw_64/kernel/signal.c b/arch/sw_64/kernel/signal.c index 96c83fc818a3..c0fd86deb78b 100644 --- a/arch/sw_64/kernel/signal.c +++ b/arch/sw_64/kernel/signal.c @@ -137,8 +137,8 @@ do_sigreturn(struct sigcontext __user *sc)
/* Send SIGTRAP if we're single-stepping: */ if (ptrace_cancel_bpt(current)) { - send_sig_fault(SIGTRAP, TRAP_BRKPT, (void __user *) regs->pc, 0, - current); + force_sig_fault(SIGTRAP, TRAP_BRKPT, + (void __user *)regs->pc, 0); } return;
@@ -168,8 +168,8 @@ do_rt_sigreturn(struct rt_sigframe __user *frame)
/* Send SIGTRAP if we're single-stepping: */ if (ptrace_cancel_bpt(current)) { - send_sig_fault(SIGTRAP, TRAP_BRKPT, (void __user *) regs->pc, 0, - current); + force_sig_fault(SIGTRAP, TRAP_BRKPT, + (void __user *)regs->pc, 0); } return;
diff --git a/arch/sw_64/kernel/traps.c b/arch/sw_64/kernel/traps.c index 2090eda082cf..99cee58e886d 100644 --- a/arch/sw_64/kernel/traps.c +++ b/arch/sw_64/kernel/traps.c @@ -180,7 +180,7 @@ do_entArith(unsigned long summary, unsigned long write_mask, } die_if_kernel("Arithmetic fault", regs, 0, NULL);
- send_sig_fault(SIGFPE, si_code, (void __user *) regs->pc, 0, current); + force_sig_fault(SIGFPE, si_code, (void __user *)regs->pc, 0); }
asmlinkage void @@ -213,13 +213,11 @@ do_entIF(unsigned long inst_type, struct pt_regs *regs) if (ptrace_cancel_bpt(current)) regs->pc -= 4; /* make pc point to former bpt */
- send_sig_fault(SIGTRAP, TRAP_BRKPT, (void __user *)regs->pc, 0, - current); + force_sig_fault(SIGTRAP, TRAP_BRKPT, (void __user *)regs->pc, 0); return;
case 1: /* bugcheck */ - send_sig_fault(SIGTRAP, TRAP_UNK, (void __user *)regs->pc, 0, - current); + force_sig_fault(SIGTRAP, TRAP_UNK, (void __user *)regs->pc, 0); return;
case 2: /* gentrap */ @@ -280,8 +278,7 @@ do_entIF(unsigned long inst_type, struct pt_regs *regs) break; }
- send_sig_fault(signo, code, (void __user *)regs->pc, 0, - current); + force_sig_fault(signo, code, (void __user *)regs->pc, regs->r16); return;
case 4: /* opDEC */ @@ -324,8 +321,7 @@ do_entIF(unsigned long inst_type, struct pt_regs *regs) break; }
- send_sig_fault(SIGILL, ILL_ILLOPC, (void __user *)regs->pc, 0, - current); + force_sig_fault(SIGILL, ILL_ILLOPC, (void __user *)regs->pc, 0); }
/* @@ -1601,12 +1597,12 @@ do_entUnaUser(void __user *va, unsigned long opcode, si_code = SEGV_MAPERR; up_read(&mm->mmap_lock); } - send_sig_fault(SIGBUS, si_code, va, 0, current); + force_sig_fault(SIGSEGV, si_code, va, 0); return;
give_sigbus: regs->pc -= 4; - send_sig_fault(SIGBUS, BUS_ADRALN, va, 0, current); + force_sig_fault(SIGBUS, BUS_ADRALN, va, 0); }
void