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[ Upstream commit c513de490f ]
If the system BIOS does not supply NUMA node information to the
PCI devices, the NUMA node is selected by choosing the current
node.
This can lead to the following crash:
divide error: 0000 SMP
CPU: 0 PID: 4 Comm: kworker/0:0 Tainted: G IOE
------------ 3.10.0-693.21.1.el7.x86_64 #1
Hardware name: Intel Corporation S2600KP/S2600KP, BIOS
SE5C610.86B.01.01.0005.101720141054 10/17/2014
Workqueue: events work_for_cpu_fn
task: ffff880174480fd0 ti: ffff880174488000 task.ti: ffff880174488000
RIP: 0010: [<ffffffffc020ac69>] hfi1_dev_affinity_init+0x129/0x6a0 [hfi1]
RSP: 0018:ffff88017448bbf8 EFLAGS: 00010246
RAX: 0000000000000011 RBX: ffff88107ffba6c0 RCX: ffff88085c22e130
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff880824ad0000
RBP: ffff88017448bc48 R08: 0000000000000011 R09: 0000000000000002
R10: ffff8808582b6ca0 R11: 0000000000003151 R12: ffff8808582b6ca0
R13: ffff8808582b6518 R14: ffff8808582b6010 R15: 0000000000000012
FS: 0000000000000000(0000) GS:ffff88085ec00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007efc707404f0 CR3: 0000000001a02000 CR4: 00000000001607f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Call Trace:
hfi1_init_dd+0x14b3/0x27a0 [hfi1]
? pcie_capability_write_word+0x46/0x70
? hfi1_pcie_init+0xc0/0x200 [hfi1]
do_init_one+0x153/0x4c0 [hfi1]
? sched_clock_cpu+0x85/0xc0
init_one+0x1b5/0x260 [hfi1]
local_pci_probe+0x4a/0xb0
work_for_cpu_fn+0x1a/0x30
process_one_work+0x17f/0x440
worker_thread+0x278/0x3c0
? manage_workers.isra.24+0x2a0/0x2a0
kthread+0xd1/0xe0
? insert_kthread_work+0x40/0x40
ret_from_fork+0x77/0xb0
? insert_kthread_work+0x40/0x40
If the BIOS is not supplying NUMA information:
- set the default table count to 1 for all possible nodes
- select node 0 (instead of current NUMA) node to get consistent
performance
- generate an error indicating that the BIOS should be upgraded
Reviewed-by: Gary Leshner <gary.s.leshner@intel.com>
Reviewed-by: Mike Marciniszyn <mike.marciniszyn@intel.com>
Signed-off-by: Michael J. Ruhl <michael.j.ruhl@intel.com>
Signed-off-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Linux kernel ============ This file was moved to Documentation/admin-guide/README.rst Please notice that there are several guides for kernel developers and users. These guides can be rendered in a number of formats, like HTML and PDF. In order to build the documentation, use ``make htmldocs`` or ``make pdfdocs``. There are various text files in the Documentation/ subdirectory, several of them using the Restructured Text markup notation. See Documentation/00-INDEX for a list of what is contained in each file. Please read the Documentation/process/changes.rst file, as it contains the requirements for building and running the kernel, and information about the problems which may result by upgrading your kernel.