| lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
|
Open Source and information security mailing list archives
| ||
|
Message-ID: <201309261737.r8QHb2oP007688@farm-0012.internal.tilera.com> Date: Thu, 26 Sep 2013 13:22:40 -0400 From: Chris Metcalf <cmetcalf@...era.com> To: <linux-kernel@...r.kernel.org> Subject: [PATCH] tile: ensure interrupts disabled for preempt_schedule_irq() When coming from a page fault (for example), interrupts might be enabled as we enter the code to return from interrupt. Cc: stable@...r.kernel.org Signed-off-by: Chris Metcalf <cmetcalf@...era.com> --- arch/tile/kernel/intvec_32.S | 3 +++ arch/tile/kernel/intvec_64.S | 3 +++ 2 files changed, 6 insertions(+) diff --git a/arch/tile/kernel/intvec_32.S b/arch/tile/kernel/intvec_32.S index 088d5c1..2cbe6d5 100644 --- a/arch/tile/kernel/intvec_32.S +++ b/arch/tile/kernel/intvec_32.S @@ -815,6 +815,9 @@ STD_ENTRY(interrupt_return) } bzt r28, 1f bnz r29, 1f + /* Disable interrupts explicitly for preemption. */ + IRQ_DISABLE(r20,r21) + TRACE_IRQS_OFF jal preempt_schedule_irq FEEDBACK_REENTER(interrupt_return) 1: diff --git a/arch/tile/kernel/intvec_64.S b/arch/tile/kernel/intvec_64.S index ec755d3..b8fc497 100644 --- a/arch/tile/kernel/intvec_64.S +++ b/arch/tile/kernel/intvec_64.S @@ -841,6 +841,9 @@ STD_ENTRY(interrupt_return) } beqzt r28, 1f bnez r29, 1f + /* Disable interrupts explicitly for preemption. */ + IRQ_DISABLE(r20,r21) + TRACE_IRQS_OFF jal preempt_schedule_irq FEEDBACK_REENTER(interrupt_return) 1: -- 1.8.3.1 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
Powered by blists - more mailing lists