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authorAnton Blanchard <anton@samba.org>2011-01-11 19:48:14 +0000
committerBenjamin Herrenschmidt <benh@kernel.crashing.org>2011-01-21 14:08:37 +1100
commite49b1fae0ba4d06b29bd753a961abb447566bf4a (patch)
tree8b532df858222afa91cdc03360ee47603d69638b /arch/powerpc/kernel/traps.c
parentdfb5509f8f49ffd52922060c830978ed5a9b9731 (diff)
powerpc: Don't silently handle machine checks from userspace
If a machine check comes from userspace we send a SIGBUS to the task and fail to printk anything. If we are taking machine checks due to bad hardware we want to know about it right away. Furthermore if we don't complain loudly then it will look a lot like a bug in the userspace application, potentially causing a lot of confusion. Signed-off-by: Anton Blanchard <anton@samba.org> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Diffstat (limited to 'arch/powerpc/kernel/traps.c')
-rw-r--r--arch/powerpc/kernel/traps.c5
1 files changed, 0 insertions, 5 deletions
diff --git a/arch/powerpc/kernel/traps.c b/arch/powerpc/kernel/traps.c
index 9e24224962d..bd74fac169b 100644
--- a/arch/powerpc/kernel/traps.c
+++ b/arch/powerpc/kernel/traps.c
@@ -626,11 +626,6 @@ void machine_check_exception(struct pt_regs *regs)
if (recover > 0)
return;
- if (user_mode(regs)) {
- _exception(SIGBUS, regs, BUS_ADRERR, regs->nip);
- return;
- }
-
#if defined(CONFIG_8xx) && defined(CONFIG_PCI)
/* the qspan pci read routines can cause machine checks -- Cort
*