From: David Mosberger <davidm@napali.hpl.hp.com>
To: linux-ia64@vger.kernel.org
Subject: [Linux-ia64] fix for siginfo.si_addr on NaT page triggered SIGSEGV
Date: Thu, 06 Mar 2003 21:26:35 +0000 [thread overview]
Message-ID: <marc-linux-ia64-105590709805988@msgid-missing> (raw)
The patch below fixes a bug which caused si_addr to be set to the
faulting IP instead of the faulting data address when a SIGSEGV got
triggered by the NaT page. The patch is relative to 2.5, but I
believe it applies on 2.4 as well.
--david
=== arch/ia64/kernel/traps.c 1.25 vs edited ==--- 1.25/arch/ia64/kernel/traps.c Tue Feb 4 17:06:16 2003
+++ edited/arch/ia64/kernel/traps.c Thu Mar 6 11:44:58 2003
@@ -486,19 +486,23 @@
case 26: /* NaT Consumption */
if (user_mode(regs)) {
+ void *addr;
+
if (((isr >> 4) & 0xf) = 2) {
/* NaT page consumption */
sig = SIGSEGV;
code = SEGV_ACCERR;
+ addr = (void *) ifa;
} else {
/* register NaT consumption */
sig = SIGILL;
code = ILL_ILLOPN;
+ addr = (void *) (regs->cr_iip + ia64_psr(regs)->ri);
}
siginfo.si_signo = sig;
siginfo.si_code = code;
siginfo.si_errno = 0;
- siginfo.si_addr = (void *) (regs->cr_iip + ia64_psr(regs)->ri);
+ siginfo.si_addr = addr;
siginfo.si_imm = vector;
siginfo.si_flags = __ISR_VALID;
siginfo.si_isr = isr;
reply other threads:[~2003-03-06 21:26 UTC|newest]
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