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authorIngo Molnar <mingo@elte.hu>2009-10-17 09:58:25 +0200
committerIngo Molnar <mingo@elte.hu>2009-10-17 09:58:25 +0200
commitbb3c3e807140816b5f5fd4840473ee52a916ad4f (patch)
tree9e8a69d266a7df86ca16177eefffab4b4e910753 /arch/x86/mm/fault.c
parent595c36490deb49381dc51231a3d5e6b66786ed27 (diff)
parent012abeea669ea49636cf952d13298bb68654146a (diff)
Merge commit 'v2.6.32-rc5' into perf/probes
Conflicts: kernel/trace/trace_event_profile.c Merge reason: update to -rc5 and resolve conflict. Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch/x86/mm/fault.c')
-rw-r--r--arch/x86/mm/fault.c19
1 files changed, 15 insertions, 4 deletions
diff --git a/arch/x86/mm/fault.c b/arch/x86/mm/fault.c
index 923ea3fb703..8f4e2ac9392 100644
--- a/arch/x86/mm/fault.c
+++ b/arch/x86/mm/fault.c
@@ -168,6 +168,7 @@ force_sig_info_fault(int si_signo, int si_code, unsigned long address,
info.si_errno = 0;
info.si_code = si_code;
info.si_addr = (void __user *)address;
+ info.si_addr_lsb = si_code == BUS_MCEERR_AR ? PAGE_SHIFT : 0;
force_sig_info(si_signo, &info, tsk);
}
@@ -791,10 +792,12 @@ out_of_memory(struct pt_regs *regs, unsigned long error_code,
}
static void
-do_sigbus(struct pt_regs *regs, unsigned long error_code, unsigned long address)
+do_sigbus(struct pt_regs *regs, unsigned long error_code, unsigned long address,
+ unsigned int fault)
{
struct task_struct *tsk = current;
struct mm_struct *mm = tsk->mm;
+ int code = BUS_ADRERR;
up_read(&mm->mmap_sem);
@@ -810,7 +813,15 @@ do_sigbus(struct pt_regs *regs, unsigned long error_code, unsigned long address)
tsk->thread.error_code = error_code;
tsk->thread.trap_no = 14;
- force_sig_info_fault(SIGBUS, BUS_ADRERR, address, tsk);
+#ifdef CONFIG_MEMORY_FAILURE
+ if (fault & VM_FAULT_HWPOISON) {
+ printk(KERN_ERR
+ "MCE: Killing %s:%d due to hardware memory corruption fault at %lx\n",
+ tsk->comm, tsk->pid, address);
+ code = BUS_MCEERR_AR;
+ }
+#endif
+ force_sig_info_fault(SIGBUS, code, address, tsk);
}
static noinline void
@@ -820,8 +831,8 @@ mm_fault_error(struct pt_regs *regs, unsigned long error_code,
if (fault & VM_FAULT_OOM) {
out_of_memory(regs, error_code, address);
} else {
- if (fault & VM_FAULT_SIGBUS)
- do_sigbus(regs, error_code, address);
+ if (fault & (VM_FAULT_SIGBUS|VM_FAULT_HWPOISON))
+ do_sigbus(regs, error_code, address, fault);
else
BUG();
}