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| author | Al Viro <viro@zeniv.linux.org.uk> | 2016-01-04 10:25:34 -0500 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2016-01-04 10:25:34 -0500 |
| commit | 7e935c7ca1e6c398f11edac5beabfc4348e3b3a4 (patch) | |
| tree | 86da864ba6341bd86b5f5450c611f918722237b2 /arch/sparc/kernel/rtrap_64.S | |
| parent | c62432b40b5e03c25faf2c8f8547bba4908b8945 (diff) | |
| parent | e9d408e107db9a554b36c3a79f67b37dd3e16da0 (diff) | |
| download | op-kernel-dev-7e935c7ca1e6c398f11edac5beabfc4348e3b3a4.zip op-kernel-dev-7e935c7ca1e6c398f11edac5beabfc4348e3b3a4.tar.gz | |
Merge branch 'memdup_user_nul' into work.misc
Diffstat (limited to 'arch/sparc/kernel/rtrap_64.S')
| -rw-r--r-- | arch/sparc/kernel/rtrap_64.S | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/arch/sparc/kernel/rtrap_64.S b/arch/sparc/kernel/rtrap_64.S index 39f0c66..d08bdaf 100644 --- a/arch/sparc/kernel/rtrap_64.S +++ b/arch/sparc/kernel/rtrap_64.S @@ -73,7 +73,13 @@ rtrap_nmi: ldx [%sp + PTREGS_OFF + PT_V9_TSTATE], %l1 andn %l1, %l4, %l1 srl %l4, 20, %l4 ba,pt %xcc, rtrap_no_irq_enable - wrpr %l4, %pil + nop + /* Do not actually set the %pil here. We will do that + * below after we clear PSTATE_IE in the %pstate register. + * If we re-enable interrupts here, we can recurse down + * the hardirq stack potentially endlessly, causing a + * stack overflow. + */ .align 64 .globl rtrap_irq, rtrap, irqsz_patchme, rtrap_xcall |
