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PTE Read access not set!!

Posted by ankurvmware 
PTE Read access not set!!
July 29, 2016 06:04AM
Hi All,

I am working with following environment details -

1. DPDK2.2 ..www.dpdk.org
2. Ubuntu 14.04.1
3. HP ProLiant DL380 Gen9, BIOS P89 07/20/2015
4. l2fwd example with command --->>> ./build/l2fwd -c f -c 0x3 -n 3 -- -p 0x3

with level for Ethernet port 0000:04:00.0,0000:05:00.0

Receiving the error as "One of the port is down"

The log is attached with this query..if anyone can help .. would be a great help.

The log -

[ 685.575455] perf interrupt took too long (5611 > 5000), lowering kernel.perf_event_max_sample_rate to 25000
[ 857.589275] ixgbe 0000:04:00.0: removed PHC on eth4
[ 858.105594] ixgbe 0000:04:00.0: complete
[ 858.125381] ixgbe 0000:05:00.0: removed PHC on eth6
[ 858.629423] ixgbe 0000:05:00.0: complete
[ 1166.478986] Bits 55-60 of /proc/PID/pagemap entries are about to stop being page-shift some time soon. See the linux/Documentation/vm/pagemap.txt for details.
[ 1173.723478] NMI: IOCK error (debug interrupt?) for reason 75 on CPU 0.
[ 1173.723483] CPU: 0 PID: 3520 Comm: l2fwd Not tainted 4.2.0-42-generic #49~14.04.1-Ubuntu
[ 1173.723484] Hardware name: HP ProLiant DL380 Gen9, BIOS P89 07/20/2015
[ 1173.723485] task: ffff881faa08ee00 ti: ffff881fd7804000 task.ti: ffff881fd7804000
[ 1173.723486] RIP: 0010:[<ffffffff81050a6b>] [<ffffffff81050a6b>] apic_ack_edge+0x2b/0x60
[ 1173.723493] RSP: 0000:ffff881fff803ef8 EFLAGS: 00003046
[ 1173.723494] RAX: 0000000000000000 RBX: ffff883ff2937d00 RCX: 00000000fffffffa
[ 1173.723495] RDX: ffff883ff2937d00 RSI: ffff881fff495a00 RDI: ffff881fff4988a0
[ 1173.723495] RBP: ffff881fff803f08 R08: 0000000000000000 R09: ffff881fff000490
[ 1173.723496] R10: ffff881fff000500 R11: 0000000000000000 R12: ffff881fff495abc
[ 1173.723497] R13: ffff881fff495a08 R14: 0000000000000051 R15: 0000000000000000
[ 1173.723498] FS: 00007f5abe9ad940(0000) GS:ffff881fff800000(0000) knlGS:0000000000000000
[ 1173.723499] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1173.723500] CR2: 0000000000950768 CR3: 0000003feea35000 CR4: 00000000001406f0
[ 1173.723501] Stack:
[ 1173.723502] 0000000000000100 ffff881fff495a00 ffff881fff803f18 ffffffff810d4aa4
[ 1173.723504] ffff881fff803f48 ffffffff810d40ae ffff881fff803f38 0000000000000049
[ 1173.723505] 0000000000000049 0000000000000051 ffff881fff803f68 ffffffff81018255
[ 1173.723507] Call Trace:
[ 1173.723508] <IRQ>
[ 1173.723513] [<ffffffff810d4aa4>] irq_chip_ack_parent+0x14/0x20
[ 1173.723515] [<ffffffff810d40ae>] handle_edge_irq+0x6e/0x150
[ 1173.723518] [<ffffffff81018255>] handle_irq+0x25/0x40
[ 1173.723521] [<ffffffff817c62f1>] do_IRQ+0x51/0xe0
[ 1173.723523] [<ffffffff817c426b>] common_interrupt+0x6b/0x6b
[ 1173.723524] <EOI>
[ 1173.723525] Code: 0f 1f 44 00 00 55 48 89 e5 53 48 89 fb 48 83 ec 08 48 85 ff 74 3d 48 89 fa eb 03 48 89 c2 48 8b 42 30 48 85 c0 75 f4 48 8b 7a 40 <e8> a0 ff ff ff 48 89 df e8 e8 7b 08 00 48 8b 05 01 c5 cd 00 31
[ 1175.787004] DMAR: DRHD: handling fault status reg 2
[ 1175.787022] DMAR: [DMA Read] Request device [04:00.0] fault addr 1fa40fb000 [fault reason 06] PTE Read access is not set
[ 1176.421788] DMAR: DRHD: handling fault status reg 102
[ 1176.421795] DMAR: [DMA Read] Request device [04:00.0] fault addr 1fa40fb000 [fault reason 06] PTE Read access is not set
[ 1178.421046] DMAR: DRHD: handling fault status reg 202
[ 1178.421052] DMAR: [DMA Read] Request device [04:00.0] fault addr 1fa40fb000 [fault reason 06] PTE Read access is not set
[ 1181.418978] DMAR: DRHD: handling fault status reg 302
[ 1181.418984] DMAR: [DMA Read] Request device [04:00.0] fault addr 1fa40fb000 [fault reason 06] PTE Read access is not set
[ 1186.384092] DMAR: DRHD: handling fault status reg 402
[ 1186.385254] DMAR: [DMA Read] Request device [04:00.0] fault addr 1fa40fb000 [fault reason 06] PTE Read access is not set
root@vswitchubuntu:/home/vswitch/Desktop/dpdk-2.2.0/examples/l2fwd#

Can anyone help about this " [DMA Read] Request device [04:00.0] fault addr 1fa40fb000 [fault reason 06] PTE Read access is not set"

Thanks.
Ankur
Re: PTE Read access not set!!
September 10, 2019 05:30AM
What should I do with this info? Can you explain that? And post it https://resumecvwriter.com/blog/cover-letter-template here.
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