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Sending SIGKILL/SIGTERM resulting in SIGSEGV delivered (Redmine#194)

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This commit is contained in:
Tomoki Shirasawa
2014-07-29 11:04:46 +09:00
parent c83e80ad91
commit 8f78b3085c
1 changed files with 5 additions and 4 deletions
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9
arch/x86/kernel/syscall.c
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@ -160,10 +160,6 @@ do_signal(unsigned long rc, void *regs0, struct process *proc, struct sig_pendin
for(w = pending->sigmask.__val[0], sig = 0; w; sig++, w >>= 1);
if(sig == SIGKILL || sig == SIGTERM)
terminate(0, sig, (ihk_mc_user_context_t *)regs->rsp);
irqstate = ihk_mc_spinlock_lock(&proc->sighandler->lock);
if(regs == NULL){ /* call from syscall */
asm("movq %%gs:132, %0" : "=r" (regs));
--regs;
@ -171,6 +167,11 @@ do_signal(unsigned long rc, void *regs0, struct process *proc, struct sig_pendin
else{
rc = regs->rax;
}
if(sig == SIGKILL || sig == SIGTERM)
terminate(0, sig, (ihk_mc_user_context_t *)regs->rsp);
irqstate = ihk_mc_spinlock_lock(&proc->sighandler->lock);
k = proc->sighandler->action + sig - 1;
if(k->sa.sa_handler == (void *)1){