rhel6: WARNING: at drivers/pci/intr_remapping.c:715
Issue
- Issuing
service network restart
brings the following errors messages at console and in/var/log/messages
:
Mar 9 15:49:44 HOSTNAME kernel: DRHD: handling fault status reg 202
Mar 9 15:49:44 HOSTNAME kernel: INTR-REMAP: Request device [[20:04.0] fault index 6a
Mar 9 15:49:44 HOSTNAME kernel: INTR-REMAP:[fault reason 34] Present field in the IRTE entry is clear
Mar 9 15:49:44 HOSTNAME kernel: INTR-REMAP: Request device [[20:04.1] fault index 6b
Mar 9 15:49:44 HOSTNAME kernel: INTR-REMAP:[fault reason 34] Present field in the IRTE entry is clear
Mar 9 15:49:44 HOSTNAME kernel: INTR-REMAP: Request device [[20:04.2] fault index 6c
Mar 9 15:49:44 HOSTNAME kernel: INTR-REMAP:[fault reason 34] Present field in the IRTE entry is clear
Mar 9 15:49:44 HOSTNAME kernel: INTR-REMAP: Request device [[20:04.3] fault index 6d
Mar 9 15:49:44 HOSTNAME kernel: INTR-REMAP:[fault reason 34] Present field in the IRTE entry is clear
- These errors are shown while booting the server:
Mar 9 14:53:46 HOSTNAME kernel: WARNING: at drivers/pci/intr_remapping.c:715 enable_intr_remapping+0x73/0x2af() (Not tainted)
Mar 9 14:53:46 HOSTNAME kernel: Hardware name: ProLiant DL380p Gen8
Mar 9 14:53:46 HOSTNAME kernel: Your BIOS has requested that x2apic be disabled.
Mar 9 14:53:46 HOSTNAME kernel: This will leave your machine vulnerable to irq-injection attacks.
Mar 9 14:53:46 HOSTNAME kernel: Use 'intremap=no_x2apic_optout' to override BIOS request.
Mar 9 14:53:46 HOSTNAME kernel: Modules linked in:
Mar 9 14:53:46 HOSTNAME kernel: Pid: 1, comm: swapper Not tainted 2.6.32-220.el6.x86_64 #1
Mar 9 14:53:46 HOSTNAME kernel: Call Trace:
Mar 9 14:53:46 HOSTNAME kernel: [<ffffffff81069b77>] ? warn_slowpath_common+0x87/0xc0
Mar 9 14:53:46 HOSTNAME kernel: [<ffffffff81069c66>] ? warn_slowpath_fmt+0x46/0x50
Mar 9 14:53:46 HOSTNAME kernel: [<ffffffff81c50521>] ? enable_intr_remapping+0x73/0x2af
Mar 9 14:53:46 HOSTNAME kernel: [<ffffffff81c30248>] ? enable_IR+0x54/0x6e
Mar 9 14:53:46 HOSTNAME kernel: [<ffffffff81c30322>] ? enable_IR_x2apic+0xc0/0x221
Mar 9 14:53:46 HOSTNAME kernel: [<ffffffff81c2e189>] ? native_smp_prepare_cpus+0x143/0x389
Mar 9 14:53:46 HOSTNAME kernel: [<ffffffff81c1f740>] ? kernel_init+0x112/0x2f9
Mar 9 14:53:46 HOSTNAME kernel: [<ffffffff8100c14a>] ? child_rip+0xa/0x20
Mar 9 14:53:46 HOSTNAME kernel: [<ffffffff81c1f62e>] ? kernel_init+0x0/0x2f9
Mar 9 14:53:46 HOSTNAME kernel: [<ffffffff8100c140>] ? child_rip+0x0/0x20
Mar 9 14:53:46 HOSTNAME kernel: ---[ end trace a7919e7f17c0a725 ]---
- Also noticed:
Mar 9 14:53:46 HOSTNAME kernel: [Firmware Bug]: the BIOS has corrupted hw-PMU resources (MSR 38d is 330)
Environment
- Red Hat Enterprise Linux 6 (several minor releases affected)
- HP systems
- Dell systems
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