From: "Lad, Prabhakar" <prabhakar.csengg@gmail.com>
To: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Cc: Kishon Vijay Abraham I <kishon@ti.com>,
Chris Paterson <Chris.Paterson2@renesas.com>,
Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>,
linux-pci <linux-pci@vger.kernel.org>
Subject: Re: PCIe EPF
Date: Wed, 1 Apr 2020 10:24:20 +0100 [thread overview]
Message-ID: <CA+V-a8vCKRtWxfB1u-XZxVeioi76Fdhb_gOWMC9TtSEmyFersg@mail.gmail.com> (raw)
In-Reply-To: <TYAPR01MB4544972970249F317DEBE5AAD8C90@TYAPR01MB4544.jpnprd01.prod.outlook.com>
HI Shimoda-san,
On Wed, Apr 1, 2020 at 9:50 AM Yoshihiro Shimoda
<yoshihiro.shimoda.uh@renesas.com> wrote:
>
> Hi Prabhakar-san,
>
> > From: Lad, Prabhakar, Sent: Wednesday, April 1, 2020 5:00 PM
> <snip>
> > > > root@hihope-rzg2m:~# pcitest -r -s 2176
> > > <snip>
> > > > [ 528.556991] pci-endpoint-test 0000:01:00.0: pci_endpoint_test_read
> > > > ffff0004b61f9000 7e951000 910c690d=910c690d
> > >
> > > I'd like to know how to print these crc values. Your report on the case 1
> > > mentioned on pci-epf-test.c like below though.
> > >
> > > > + dev_err(dev, "%s %llx %llx csum: %x = %x\n", __func__, reg->dst_addr,
> > > > + phys_addr, reg->checksum, crc32_le(~0, dst_addr, reg->size));
> > >
> > > Also, as I mentioned on previous email, this is possible to cause timing issue.
> > > So, I'd like to where you added the hexdump on pci_endpoint_test.c.
> > > Perhaps, copy and pasting your whole debug diff is useful to understand about it.
> > >
> >
> > Following is the complete diff:
>
> Thanks!
>
> > diff --git a/drivers/misc/pci_endpoint_test.c b/drivers/misc/pci_endpoint_test.c
> > index 3c49514b4813..e7bf58a1fee8 100644
> > --- a/drivers/misc/pci_endpoint_test.c
> > +++ b/drivers/misc/pci_endpoint_test.c
> > @@ -561,6 +561,23 @@ static bool pci_endpoint_test_write(struct
> > pci_endpoint_test *test,
> > return ret;
> > }
> >
> > +static void print_buffer(struct device *dev, void *buff_addr, size_t size)
> > +{
> > + size_t i;
> > + u64 *addr = buff_addr;
> > +
> > + for(i = 0; i < size; i += sizeof(addr))
> > + dev_err(dev, "buf[%zu] : %llx\n", i, *addr);
> > +
> > + for(i = 0; i < size; i +=1) {
> > + if (0x910c690d == crc32_le(~0, buff_addr, i))
> > + dev_err(dev, "%x\n",
> > + crc32_le(~0, buff_addr, i));
> > + }
> > +
> > + dev_err(dev, "\n\n\n\n");
> > +}
> > +
> > static bool pci_endpoint_test_read(struct pci_endpoint_test *test,
> > unsigned long arg)
> > {
> > @@ -608,7 +625,7 @@ static bool pci_endpoint_test_read(struct
> > pci_endpoint_test *test,
> > }
>
> I'd like to allocate temporary buffer here to copy data later...
> void *tmp;
> ...
> tmp = kzalloc(size + alignment, GFP_KERNEL);
>
> > orig_phys_addr = dma_map_single(dev, orig_addr, size + alignment,
> > - DMA_FROM_DEVICE);
> > + DMA_BIDIRECTIONAL);
> > if (dma_mapping_error(dev, orig_phys_addr)) {
> > dev_err(dev, "failed to map source buffer address\n");
> > ret = false;
> > @@ -640,12 +657,17 @@ static bool pci_endpoint_test_read(struct
> > pci_endpoint_test *test,
> > wait_for_completion(&test->irq_raised);
> >
> > dma_unmap_single(dev, orig_phys_addr, size + alignment,
> > - DMA_FROM_DEVICE);
> > + DMA_BIDIRECTIONAL);
>
> And then, I'd like to copy addr buffer to the tmp here.
> memcpy(tmp, addr, size);
>
> > crc32 = crc32_le(~0, addr, size);
>
> And addr is replaced with tmp;
>
> > if (crc32 == pci_endpoint_test_readl(test, PCI_ENDPOINT_TEST_CHECKSUM))
> > ret = true;
> >
> > + print_buffer(dev, addr, size);
>
> This addr is also replaced with tmp;
>
> > + dev_err(dev, "%s %px %llx %x=%x\n", __func__, orig_addr,
> > + orig_phys_addr, crc32,
> > + pci_endpoint_test_readl(test, PCI_ENDPOINT_TEST_CHECKSUM));
>
> The crc32 value was calculated before print the buffer.
> This means that timing is difference between crc32_le(addr) and print_buffer(addr).
> So, I'd like to copy the addr buffer to tmp and use the tmp for crc32_le() and print_buffer().
>
Following is the diff of suggested changes:
diff --git a/drivers/misc/pci_endpoint_test.c b/drivers/misc/pci_endpoint_test.c
index 3c49514b4813..b782134838d1 100644
--- a/drivers/misc/pci_endpoint_test.c
+++ b/drivers/misc/pci_endpoint_test.c
@@ -561,6 +561,23 @@ static bool pci_endpoint_test_write(struct
pci_endpoint_test *test,
return ret;
}
+static void print_buffer(struct device *dev, void *buff_addr, size_t size)
+{
+ size_t i;
+ u64 *addr = buff_addr;
+
+ for(i = 0; i < size; i += sizeof(addr))
+ dev_err(dev, "buf[%zu] : %llx\n", i, *addr);
+
+ for(i = 0; i < size; i +=1) {
+ if (0x910c690d == crc32_le(~0, buff_addr, i))
+ dev_err(dev, "%x\n",
+ crc32_le(~0, buff_addr, i));
+ }
+
+ dev_err(dev, "\n\n\n\n");
+}
+
static bool pci_endpoint_test_read(struct pci_endpoint_test *test,
unsigned long arg)
{
@@ -574,6 +591,7 @@ static bool pci_endpoint_test_read(struct
pci_endpoint_test *test,
struct pci_dev *pdev = test->pdev;
struct device *dev = &pdev->dev;
void *orig_addr;
+ void *tmp_buffer;
dma_addr_t orig_phys_addr;
size_t offset;
size_t alignment = test->alignment;
@@ -601,14 +619,19 @@ static bool pci_endpoint_test_read(struct
pci_endpoint_test *test,
}
orig_addr = kzalloc(size + alignment, GFP_KERNEL);
- if (!orig_addr) {
+ tmp_buffer = kzalloc(size + alignment, GFP_KERNEL);
+ if (!orig_addr || !tmp_buffer) {
dev_err(dev, "Failed to allocate destination address\n");
ret = false;
+ if (orig_addr)
+ kfree(orig_addr);
+ if (tmp_buffer)
+ kfree(tmp_buffer);
goto err;
}
orig_phys_addr = dma_map_single(dev, orig_addr, size + alignment,
- DMA_FROM_DEVICE);
+ DMA_BIDIRECTIONAL);
if (dma_mapping_error(dev, orig_phys_addr)) {
dev_err(dev, "failed to map source buffer address\n");
ret = false;
@@ -640,14 +663,24 @@ static bool pci_endpoint_test_read(struct
pci_endpoint_test *test,
wait_for_completion(&test->irq_raised);
dma_unmap_single(dev, orig_phys_addr, size + alignment,
- DMA_FROM_DEVICE);
+ DMA_BIDIRECTIONAL);
+
+ memcpy(tmp_buffer, addr, size);
crc32 = crc32_le(~0, addr, size);
if (crc32 == pci_endpoint_test_readl(test, PCI_ENDPOINT_TEST_CHECKSUM))
ret = true;
+ print_buffer(dev, addr, size);
+ print_buffer(dev, tmp_buffer, size);
+ dev_err(dev, "%s kzalloc:%px dma handle:%llx buffer CRC:%x BAR
CRC:%x tmp buffer crc: %x\n",
+ __func__, orig_addr, orig_phys_addr, crc32,
+ pci_endpoint_test_readl(test, PCI_ENDPOINT_TEST_CHECKSUM),
+ crc32_le(~0, tmp_buffer, size));
+
err_phys_addr:
kfree(orig_addr);
+ kfree(tmp_buffer);
err:
return ret;
}
> > +
> > err_phys_addr:
> > kfree(orig_addr);
> > err:
> >
> > Note: I have added DMA_BIDIRECTIONAL that is because I am also
> > printing the buffer on ep
> > and calulating the crc
> >
> > > > READ ( 2176 bytes): OKAY
> > > > root@hihope-rzg2m:~# pcitest -r -s 2176
> > > <snip>
> > > > [ 533.457921] pci-endpoint-test 0000:01:00.0: pci_endpoint_test_read
> > > > ffff0004b61f9000 7e959800 ce535039=910c690d
> > > > READ ( 2176 bytes): NOT OKAY
> > > >
> > > > Note: for failure case the crc is always ce535039
> > >
> > > The value of ce535039 is from pci_endpoint_test_readl(test, PCI_ENDPOINT_TEST_CHECKSUM)?
> > > If so, it's strange because all 0xdf values with 2176 bytes should be 910c690d by crc32_le().
> > >
> > The value ce535039 is the one which is calculated from the buffer and
> > value 910c690d is the one
> > which is passed from the BAR memory which is correct.
>
> I got it. If my guess is correct, using the tmp buffer above can print
> the buffer with wrong value(s).
>
>
> By the way, your PCIe host environment (RZ/G2N) output the following log?
>
> [ 0.000000] software IO TLB: mapped [mem 0x7bfff000-0x7ffff000] (64MB)
>
> If so, I guess this issue is related to this software IO TLB behavior.
> IIUC, if we use coherent buffer or GPF_DMA buffer, the kernel will not
> use software IO TLB for these buffers.
>
root@hihope-rzg2m:~# dmesg | grep TLB
[ 0.000000] software IO TLB: mapped [mem 0x7bfff000-0x7ffff000] (64MB)
[ 0.149808] HugeTLB registered 1.00 GiB page size, pre-allocated 0 pages
[ 0.149825] HugeTLB registered 32.0 MiB page size, pre-allocated 0 pages
[ 0.149834] HugeTLB registered 2.00 MiB page size, pre-allocated 0 pages
[ 0.149843] HugeTLB registered 64.0 KiB page size, pre-allocated 0 pages
root@hihope-rzg2m:~#
root@hihope-rzg2m:~#
root@hihope-rzg2m:~#
root@hihope-rzg2m:~#
root@hihope-rzg2m:~# pcitest -i1
SET IRQ TYPE TO MSI: OKAY
root@hihope-rzg2m:~#
root@hihope-rzg2m:~#
root@hihope-rzg2m:~# cat read.sh
pcitest -i 1
while [ 1 ]; do pcitest -r -s 2176; done
root@hihope-rzg2m:~# pcitest -r -s 2176
[ 77.863719] pci-endpoint-test 0000:01:00.0: buf[0] : dfdfdfdfdfdfdfdf
[ 77.870299] pci-endpoint-test 0000:01:00.0: buf[8] : dfdfdfdfdfdfdfdf
[ 77.876800] pci-endpoint-test 0000:01:00.0: buf[16] : dfdfdfdfdfdfdfdf
[ 77.883563] pci-endpoint-test 0000:01:00.0: buf[24] : dfdfdfdfdfdfdfdf
[ 77.890241] pci-endpoint-test 0000:01:00.0: buf[32] : dfdfdfdfdfdfdfdf
[ 77.896837] pci-endpoint-test 0000:01:00.0: buf[40] : dfdfdfdfdfdfdfdf
[ 77.903406] pci-endpoint-test 0000:01:00.0: buf[48] : dfdfdfdfdfdfdfdf
[ 77.909971] pci-endpoint-test 0000:01:00.0: buf[56] : dfdfdfdfdfdfdfdf
[ 77.916534] pci-endpoint-test 0000:01:00.0: buf[64] : dfdfdfdfdfdfdfdf
[ 77.923110] pci-endpoint-test 0000:01:00.0: buf[72] : dfdfdfdfdfdfdfdf
[ 77.929672] pci-endpoint-test 0000:01:00.0: buf[80] : dfdfdfdfdfdfdfdf
[ 77.936242] pci-endpoint-test 0000:01:00.0: buf[88] : dfdfdfdfdfdfdfdf
[ 77.942808] pci-endpoint-test 0000:01:00.0: buf[96] : dfdfdfdfdfdfdfdf
[ 77.949374] pci-endpoint-test 0000:01:00.0: buf[104] : dfdfdfdfdfdfdfdf
[ 77.956023] pci-endpoint-test 0000:01:00.0: buf[112] : dfdfdfdfdfdfdfdf
[ 77.962675] pci-endpoint-test 0000:01:00.0: buf[120] : dfdfdfdfdfdfdfdf
[ 77.969323] pci-endpoint-test 0000:01:00.0: buf[128] : dfdfdfdfdfdfdfdf
[ 77.975977] pci-endpoint-test 0000:01:00.0: buf[136] : dfdfdfdfdfdfdfdf
[ 77.982626] pci-endpoint-test 0000:01:00.0: buf[144] : dfdfdfdfdfdfdfdf
[ 77.989281] pci-endpoint-test 0000:01:00.0: buf[152] : dfdfdfdfdfdfdfdf
[ 77.995944] pci-endpoint-test 0000:01:00.0: buf[160] : dfdfdfdfdfdfdfdf
[ 78.002602] pci-endpoint-test 0000:01:00.0: buf[168] : dfdfdfdfdfdfdfdf
[ 78.009253] pci-endpoint-test 0000:01:00.0: buf[176] : dfdfdfdfdfdfdfdf
[ 78.015905] pci-endpoint-test 0000:01:00.0: buf[184] : dfdfdfdfdfdfdfdf
[ 78.022563] pci-endpoint-test 0000:01:00.0: buf[192] : dfdfdfdfdfdfdfdf
[ 78.029214] pci-endpoint-test 0000:01:00.0: buf[200] : dfdfdfdfdfdfdfdf
[ 78.035863] pci-endpoint-test 0000:01:00.0: buf[208] : dfdfdfdfdfdfdfdf
[ 78.042515] pci-endpoint-test 0000:01:00.0: buf[216] : dfdfdfdfdfdfdfdf
[ 78.049165] pci-endpoint-test 0000:01:00.0: buf[224] : dfdfdfdfdfdfdfdf
[ 78.055818] pci-endpoint-test 0000:01:00.0: buf[232] : dfdfdfdfdfdfdfdf
[ 78.062466] pci-endpoint-test 0000:01:00.0: buf[240] : dfdfdfdfdfdfdfdf
[ 78.069116] pci-endpoint-test 0000:01:00.0: buf[248] : dfdfdfdfdfdfdfdf
[ 78.075768] pci-endpoint-test 0000:01:00.0: buf[256] : dfdfdfdfdfdfdfdf
[ 78.082418] pci-endpoint-test 0000:01:00.0: buf[264] : dfdfdfdfdfdfdfdf
[ 78.089066] pci-endpoint-test 0000:01:00.0: buf[272] : dfdfdfdfdfdfdfdf
[ 78.095720] pci-endpoint-test 0000:01:00.0: buf[280] : dfdfdfdfdfdfdfdf
[ 78.102371] pci-endpoint-test 0000:01:00.0: buf[288] : dfdfdfdfdfdfdfdf
[ 78.109025] pci-endpoint-test 0000:01:00.0: buf[296] : dfdfdfdfdfdfdfdf
[ 78.115686] pci-endpoint-test 0000:01:00.0: buf[304] : dfdfdfdfdfdfdfdf
[ 78.122356] pci-endpoint-test 0000:01:00.0: buf[312] : dfdfdfdfdfdfdfdf
[ 78.129003] pci-endpoint-test 0000:01:00.0: buf[320] : dfdfdfdfdfdfdfdf
[ 78.135658] pci-endpoint-test 0000:01:00.0: buf[328] : dfdfdfdfdfdfdfdf
[ 78.142306] pci-endpoint-test 0000:01:00.0: buf[336] : dfdfdfdfdfdfdfdf
[ 78.148958] pci-endpoint-test 0000:01:00.0: buf[344] : dfdfdfdfdfdfdfdf
[ 78.155607] pci-endpoint-test 0000:01:00.0: buf[352] : dfdfdfdfdfdfdfdf
[ 78.162257] pci-endpoint-test 0000:01:00.0: buf[360] : dfdfdfdfdfdfdfdf
[ 78.168905] pci-endpoint-test 0000:01:00.0: buf[368] : dfdfdfdfdfdfdfdf
[ 78.175554] pci-endpoint-test 0000:01:00.0: buf[376] : dfdfdfdfdfdfdfdf
[ 78.182204] pci-endpoint-test 0000:01:00.0: buf[384] : dfdfdfdfdfdfdfdf
[ 78.188854] pci-endpoint-test 0000:01:00.0: buf[392] : dfdfdfdfdfdfdfdf
[ 78.195504] pci-endpoint-test 0000:01:00.0: buf[400] : dfdfdfdfdfdfdfdf
[ 78.202154] pci-endpoint-test 0000:01:00.0: buf[408] : dfdfdfdfdfdfdfdf
[ 78.208804] pci-endpoint-test 0000:01:00.0: buf[416] : dfdfdfdfdfdfdfdf
[ 78.215457] pci-endpoint-test 0000:01:00.0: buf[424] : dfdfdfdfdfdfdfdf
[ 78.222113] pci-endpoint-test 0000:01:00.0: buf[432] : dfdfdfdfdfdfdfdf
[ 78.228769] pci-endpoint-test 0000:01:00.0: buf[440] : dfdfdfdfdfdfdfdf
[ 78.235428] pci-endpoint-test 0000:01:00.0: buf[448] : dfdfdfdfdfdfdfdf
[ 78.242089] pci-endpoint-test 0000:01:00.0: buf[456] : dfdfdfdfdfdfdfdf
[ 78.248741] pci-endpoint-test 0000:01:00.0: buf[464] : dfdfdfdfdfdfdfdf
[ 78.255394] pci-endpoint-test 0000:01:00.0: buf[472] : dfdfdfdfdfdfdfdf
[ 78.262042] pci-endpoint-test 0000:01:00.0: buf[480] : dfdfdfdfdfdfdfdf
[ 78.268692] pci-endpoint-test 0000:01:00.0: buf[488] : dfdfdfdfdfdfdfdf
[ 78.275342] pci-endpoint-test 0000:01:00.0: buf[496] : dfdfdfdfdfdfdfdf
[ 78.281992] pci-endpoint-test 0000:01:00.0: buf[504] : dfdfdfdfdfdfdfdf
[ 78.288639] pci-endpoint-test 0000:01:00.0: buf[512] : dfdfdfdfdfdfdfdf
[ 78.295291] pci-endpoint-test 0000:01:00.0: buf[520] : dfdfdfdfdfdfdfdf
[ 78.301939] pci-endpoint-test 0000:01:00.0: buf[528] : dfdfdfdfdfdfdfdf
[ 78.308587] pci-endpoint-test 0000:01:00.0: buf[536] : dfdfdfdfdfdfdfdf
[ 78.315234] pci-endpoint-test 0000:01:00.0: buf[544] : dfdfdfdfdfdfdfdf
[ 78.321895] pci-endpoint-test 0000:01:00.0: buf[552] : dfdfdfdfdfdfdfdf
[ 78.328545] pci-endpoint-test 0000:01:00.0: buf[560] : dfdfdfdfdfdfdfdf
[ 78.335195] pci-endpoint-test 0000:01:00.0: buf[568] : dfdfdfdfdfdfdfdf
[ 78.341843] pci-endpoint-test 0000:01:00.0: buf[576] : dfdfdfdfdfdfdfdf
[ 78.348496] pci-endpoint-test 0000:01:00.0: buf[584] : dfdfdfdfdfdfdfdf
[ 78.355156] pci-endpoint-test 0000:01:00.0: buf[592] : dfdfdfdfdfdfdfdf
[ 78.361815] pci-endpoint-test 0000:01:00.0: buf[600] : dfdfdfdfdfdfdfdf
[ 78.368462] pci-endpoint-test 0000:01:00.0: buf[608] : dfdfdfdfdfdfdfdf
[ 78.375117] pci-endpoint-test 0000:01:00.0: buf[616] : dfdfdfdfdfdfdfdf
[ 78.381764] pci-endpoint-test 0000:01:00.0: buf[624] : dfdfdfdfdfdfdfdf
[ 78.388416] pci-endpoint-test 0000:01:00.0: buf[632] : dfdfdfdfdfdfdfdf
[ 78.395063] pci-endpoint-test 0000:01:00.0: buf[640] : dfdfdfdfdfdfdfdf
[ 78.401717] pci-endpoint-test 0000:01:00.0: buf[648] : dfdfdfdfdfdfdfdf
[ 78.408366] pci-endpoint-test 0000:01:00.0: buf[656] : dfdfdfdfdfdfdfdf
[ 78.415023] pci-endpoint-test 0000:01:00.0: buf[664] : dfdfdfdfdfdfdfdf
[ 78.421677] pci-endpoint-test 0000:01:00.0: buf[672] : dfdfdfdfdfdfdfdf
[ 78.428329] pci-endpoint-test 0000:01:00.0: buf[680] : dfdfdfdfdfdfdfdf
[ 78.434977] pci-endpoint-test 0000:01:00.0: buf[688] : dfdfdfdfdfdfdfdf
[ 78.441630] pci-endpoint-test 0000:01:00.0: buf[696] : dfdfdfdfdfdfdfdf
[ 78.448279] pci-endpoint-test 0000:01:00.0: buf[704] : dfdfdfdfdfdfdfdf
[ 78.454929] pci-endpoint-test 0000:01:00.0: buf[712] : dfdfdfdfdfdfdfdf
[ 78.461578] pci-endpoint-test 0000:01:00.0: buf[720] : dfdfdfdfdfdfdfdf
[ 78.468231] pci-endpoint-test 0000:01:00.0: buf[728] : dfdfdfdfdfdfdfdf
[ 78.474890] pci-endpoint-test 0000:01:00.0: buf[736] : dfdfdfdfdfdfdfdf
[ 78.481548] pci-endpoint-test 0000:01:00.0: buf[744] : dfdfdfdfdfdfdfdf
[ 78.488199] pci-endpoint-test 0000:01:00.0: buf[752] : dfdfdfdfdfdfdfdf
[ 78.494852] pci-endpoint-test 0000:01:00.0: buf[760] : dfdfdfdfdfdfdfdf
[ 78.501500] pci-endpoint-test 0000:01:00.0: buf[768] : dfdfdfdfdfdfdfdf
[ 78.508150] pci-endpoint-test 0000:01:00.0: buf[776] : dfdfdfdfdfdfdfdf
[ 78.514797] pci-endpoint-test 0000:01:00.0: buf[784] : dfdfdfdfdfdfdfdf
[ 78.521470] pci-endpoint-test 0000:01:00.0: buf[792] : dfdfdfdfdfdfdfdf
[ 78.528122] pci-endpoint-test 0000:01:00.0: buf[800] : dfdfdfdfdfdfdfdf
[ 78.534774] pci-endpoint-test 0000:01:00.0: buf[808] : dfdfdfdfdfdfdfdf
[ 78.541423] pci-endpoint-test 0000:01:00.0: buf[816] : dfdfdfdfdfdfdfdf
[ 78.548070] pci-endpoint-test 0000:01:00.0: buf[824] : dfdfdfdfdfdfdfdf
[ 78.554720] pci-endpoint-test 0000:01:00.0: buf[832] : dfdfdfdfdfdfdfdf
[ 78.561367] pci-endpoint-test 0000:01:00.0: buf[840] : dfdfdfdfdfdfdfdf
[ 78.568017] pci-endpoint-test 0000:01:00.0: buf[848] : dfdfdfdfdfdfdfdf
[ 78.574667] pci-endpoint-test 0000:01:00.0: buf[856] : dfdfdfdfdfdfdfdf
[ 78.581317] pci-endpoint-test 0000:01:00.0: buf[864] : dfdfdfdfdfdfdfdf
[ 78.587964] pci-endpoint-test 0000:01:00.0: buf[872] : dfdfdfdfdfdfdfdf
[ 78.594623] pci-endpoint-test 0000:01:00.0: buf[880] : dfdfdfdfdfdfdfdf
[ 78.601286] pci-endpoint-test 0000:01:00.0: buf[888] : dfdfdfdfdfdfdfdf
[ 78.607946] pci-endpoint-test 0000:01:00.0: buf[896] : dfdfdfdfdfdfdfdf
[ 78.614596] pci-endpoint-test 0000:01:00.0: buf[904] : dfdfdfdfdfdfdfdf
[ 78.621246] pci-endpoint-test 0000:01:00.0: buf[912] : dfdfdfdfdfdfdfdf
[ 78.627902] pci-endpoint-test 0000:01:00.0: buf[920] : dfdfdfdfdfdfdfdf
[ 78.634553] pci-endpoint-test 0000:01:00.0: buf[928] : dfdfdfdfdfdfdfdf
[ 78.641203] pci-endpoint-test 0000:01:00.0: buf[936] : dfdfdfdfdfdfdfdf
[ 78.647852] pci-endpoint-test 0000:01:00.0: buf[944] : dfdfdfdfdfdfdfdf
[ 78.654499] pci-endpoint-test 0000:01:00.0: buf[952] : dfdfdfdfdfdfdfdf
[ 78.661148] pci-endpoint-test 0000:01:00.0: buf[960] : dfdfdfdfdfdfdfdf
[ 78.667794] pci-endpoint-test 0000:01:00.0: buf[968] : dfdfdfdfdfdfdfdf
[ 78.674445] pci-endpoint-test 0000:01:00.0: buf[976] : dfdfdfdfdfdfdfdf
[ 78.681094] pci-endpoint-test 0000:01:00.0: buf[984] : dfdfdfdfdfdfdfdf
[ 78.687746] pci-endpoint-test 0000:01:00.0: buf[992] : dfdfdfdfdfdfdfdf
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[ 80.185564] pci-endpoint-test 0000:01:00.0: buf[592] : dfdfdfdfdfdfdfdf
[ 80.192212] pci-endpoint-test 0000:01:00.0: buf[600] : dfdfdfdfdfdfdfdf
[ 80.198862] pci-endpoint-test 0000:01:00.0: buf[608] : dfdfdfdfdfdfdfdf
[ 80.205512] pci-endpoint-test 0000:01:00.0: buf[616] : dfdfdfdfdfdfdfdf
[ 80.212179] pci-endpoint-test 0000:01:00.0: buf[624] : dfdfdfdfdfdfdfdf
[ 80.218839] pci-endpoint-test 0000:01:00.0: buf[632] : dfdfdfdfdfdfdfdf
[ 80.225493] pci-endpoint-test 0000:01:00.0: buf[640] : dfdfdfdfdfdfdfdf
[ 80.232144] pci-endpoint-test 0000:01:00.0: buf[648] : dfdfdfdfdfdfdfdf
[ 80.238801] pci-endpoint-test 0000:01:00.0: buf[656] : dfdfdfdfdfdfdfdf
[ 80.245463] pci-endpoint-test 0000:01:00.0: buf[664] : dfdfdfdfdfdfdfdf
[ 80.252113] pci-endpoint-test 0000:01:00.0: buf[672] : dfdfdfdfdfdfdfdf
[ 80.258759] pci-endpoint-test 0000:01:00.0: buf[680] : dfdfdfdfdfdfdfdf
[ 80.265411] pci-endpoint-test 0000:01:00.0: buf[688] : dfdfdfdfdfdfdfdf
[ 80.272060] pci-endpoint-test 0000:01:00.0: buf[696] : dfdfdfdfdfdfdfdf
[ 80.278710] pci-endpoint-test 0000:01:00.0: buf[704] : dfdfdfdfdfdfdfdf
[ 80.285359] pci-endpoint-test 0000:01:00.0: buf[712] : dfdfdfdfdfdfdfdf
[ 80.292010] pci-endpoint-test 0000:01:00.0: buf[720] : dfdfdfdfdfdfdfdf
[ 80.298659] pci-endpoint-test 0000:01:00.0: buf[728] : dfdfdfdfdfdfdfdf
[ 80.305308] pci-endpoint-test 0000:01:00.0: buf[736] : dfdfdfdfdfdfdfdf
[ 80.311958] pci-endpoint-test 0000:01:00.0: buf[744] : dfdfdfdfdfdfdfdf
[ 80.318606] pci-endpoint-test 0000:01:00.0: buf[752] : dfdfdfdfdfdfdfdf
[ 80.325257] pci-endpoint-test 0000:01:00.0: buf[760] : dfdfdfdfdfdfdfdf
[ 80.331919] pci-endpoint-test 0000:01:00.0: buf[768] : dfdfdfdfdfdfdfdf
[ 80.338586] pci-endpoint-test 0000:01:00.0: buf[776] : dfdfdfdfdfdfdfdf
[ 80.345241] pci-endpoint-test 0000:01:00.0: buf[784] : dfdfdfdfdfdfdfdf
[ 80.351890] pci-endpoint-test 0000:01:00.0: buf[792] : dfdfdfdfdfdfdfdf
[ 80.358541] pci-endpoint-test 0000:01:00.0: buf[800] : dfdfdfdfdfdfdfdf
[ 80.365189] pci-endpoint-test 0000:01:00.0: buf[808] : dfdfdfdfdfdfdfdf
[ 80.371838] pci-endpoint-test 0000:01:00.0: buf[816] : dfdfdfdfdfdfdfdf
[ 80.378489] pci-endpoint-test 0000:01:00.0: buf[824] : dfdfdfdfdfdfdfdf
[ 80.385138] pci-endpoint-test 0000:01:00.0: buf[832] : dfdfdfdfdfdfdfdf
[ 80.391788] pci-endpoint-test 0000:01:00.0: buf[840] : dfdfdfdfdfdfdfdf
[ 80.398439] pci-endpoint-test 0000:01:00.0: buf[848] : dfdfdfdfdfdfdfdf
[ 80.405087] pci-endpoint-test 0000:01:00.0: buf[856] : dfdfdfdfdfdfdfdf
[ 80.411737] pci-endpoint-test 0000:01:00.0: buf[864] : dfdfdfdfdfdfdfdf
[ 80.418388] pci-endpoint-test 0000:01:00.0: buf[872] : dfdfdfdfdfdfdfdf
[ 80.425039] pci-endpoint-test 0000:01:00.0: buf[880] : dfdfdfdfdfdfdfdf
[ 80.431688] pci-endpoint-test 0000:01:00.0: buf[888] : dfdfdfdfdfdfdfdf
[ 80.438346] pci-endpoint-test 0000:01:00.0: buf[896] : dfdfdfdfdfdfdfdf
[ 80.444997] pci-endpoint-test 0000:01:00.0: buf[904] : dfdfdfdfdfdfdfdf
[ 80.451661] pci-endpoint-test 0000:01:00.0: buf[912] : dfdfdfdfdfdfdfdf
[ 80.458321] pci-endpoint-test 0000:01:00.0: buf[920] : dfdfdfdfdfdfdfdf
[ 80.464972] pci-endpoint-test 0000:01:00.0: buf[928] : dfdfdfdfdfdfdfdf
[ 80.471620] pci-endpoint-test 0000:01:00.0: buf[936] : dfdfdfdfdfdfdfdf
[ 80.478267] pci-endpoint-test 0000:01:00.0: buf[944] : dfdfdfdfdfdfdfdf
[ 80.484918] pci-endpoint-test 0000:01:00.0: buf[952] : dfdfdfdfdfdfdfdf
[ 80.491567] pci-endpoint-test 0000:01:00.0: buf[960] : dfdfdfdfdfdfdfdf
[ 80.498215] pci-endpoint-test 0000:01:00.0: buf[968] : dfdfdfdfdfdfdfdf
[ 80.504863] pci-endpoint-test 0000:01:00.0: buf[976] : dfdfdfdfdfdfdfdf
[ 80.511510] pci-endpoint-test 0000:01:00.0: buf[984] : dfdfdfdfdfdfdfdf
[ 80.518160] pci-endpoint-test 0000:01:00.0: buf[992] : dfdfdfdfdfdfdfdf
[ 80.524807] pci-endpoint-test 0000:01:00.0: buf[1000] : dfdfdfdfdfdfdfdf
[ 80.531550] pci-endpoint-test 0000:01:00.0: buf[1008] : dfdfdfdfdfdfdfdf
[ 80.538291] pci-endpoint-test 0000:01:00.0: buf[1016] : dfdfdfdfdfdfdfdf
[ 80.545028] pci-endpoint-test 0000:01:00.0: buf[1024] : dfdfdfdfdfdfdfdf
[ 80.551765] pci-endpoint-test 0000:01:00.0: buf[1032] : dfdfdfdfdfdfdfdf
[ 80.558503] pci-endpoint-test 0000:01:00.0: buf[1040] : dfdfdfdfdfdfdfdf
[ 80.565243] pci-endpoint-test 0000:01:00.0: buf[1048] : dfdfdfdfdfdfdfdf
[ 80.571995] pci-endpoint-test 0000:01:00.0: buf[1056] : dfdfdfdfdfdfdfdf
[ 80.578742] pci-endpoint-test 0000:01:00.0: buf[1064] : dfdfdfdfdfdfdfdf
[ 80.585493] pci-endpoint-test 0000:01:00.0: buf[1072] : dfdfdfdfdfdfdfdf
[ 80.592230] pci-endpoint-test 0000:01:00.0: buf[1080] : dfdfdfdfdfdfdfdf
[ 80.598968] pci-endpoint-test 0000:01:00.0: buf[1088] : dfdfdfdfdfdfdfdf
[ 80.605704] pci-endpoint-test 0000:01:00.0: buf[1096] : dfdfdfdfdfdfdfdf
[ 80.612441] pci-endpoint-test 0000:01:00.0: buf[1104] : dfdfdfdfdfdfdfdf
[ 80.619177] pci-endpoint-test 0000:01:00.0: buf[1112] : dfdfdfdfdfdfdfdf
[ 80.625912] pci-endpoint-test 0000:01:00.0: buf[1120] : dfdfdfdfdfdfdfdf
[ 80.632648] pci-endpoint-test 0000:01:00.0: buf[1128] : dfdfdfdfdfdfdfdf
[ 80.639394] pci-endpoint-test 0000:01:00.0: buf[1136] : dfdfdfdfdfdfdfdf
[ 80.646129] pci-endpoint-test 0000:01:00.0: buf[1144] : dfdfdfdfdfdfdfdf
[ 80.652864] pci-endpoint-test 0000:01:00.0: buf[1152] : dfdfdfdfdfdfdfdf
[ 80.659599] pci-endpoint-test 0000:01:00.0: buf[1160] : dfdfdfdfdfdfdfdf
[ 80.666336] pci-endpoint-test 0000:01:00.0: buf[1168] : dfdfdfdfdfdfdfdf
[ 80.673070] pci-endpoint-test 0000:01:00.0: buf[1176] : dfdfdfdfdfdfdfdf
[ 80.679806] pci-endpoint-test 0000:01:00.0: buf[1184] : dfdfdfdfdfdfdfdf
[ 80.686544] pci-endpoint-test 0000:01:00.0: buf[1192] : dfdfdfdfdfdfdfdf
[ 80.693297] pci-endpoint-test 0000:01:00.0: buf[1200] : dfdfdfdfdfdfdfdf
[ 80.700044] pci-endpoint-test 0000:01:00.0: buf[1208] : dfdfdfdfdfdfdfdf
[ 80.706783] pci-endpoint-test 0000:01:00.0: buf[1216] : dfdfdfdfdfdfdfdf
[ 80.713519] pci-endpoint-test 0000:01:00.0: buf[1224] : dfdfdfdfdfdfdfdf
[ 80.720255] pci-endpoint-test 0000:01:00.0: buf[1232] : dfdfdfdfdfdfdfdf
[ 80.726994] pci-endpoint-test 0000:01:00.0: buf[1240] : dfdfdfdfdfdfdfdf
[ 80.733728] pci-endpoint-test 0000:01:00.0: buf[1248] : dfdfdfdfdfdfdfdf
[ 80.740468] pci-endpoint-test 0000:01:00.0: buf[1256] : dfdfdfdfdfdfdfdf
[ 80.747206] pci-endpoint-test 0000:01:00.0: buf[1264] : dfdfdfdfdfdfdfdf
[ 80.753941] pci-endpoint-test 0000:01:00.0: buf[1272] : dfdfdfdfdfdfdfdf
[ 80.760677] pci-endpoint-test 0000:01:00.0: buf[1280] : dfdfdfdfdfdfdfdf
[ 80.767415] pci-endpoint-test 0000:01:00.0: buf[1288] : dfdfdfdfdfdfdfdf
[ 80.774151] pci-endpoint-test 0000:01:00.0: buf[1296] : dfdfdfdfdfdfdfdf
[ 80.780883] pci-endpoint-test 0000:01:00.0: buf[1304] : dfdfdfdfdfdfdfdf
[ 80.787624] pci-endpoint-test 0000:01:00.0: buf[1312] : dfdfdfdfdfdfdfdf
[ 80.794358] pci-endpoint-test 0000:01:00.0: buf[1320] : dfdfdfdfdfdfdfdf
[ 80.801103] pci-endpoint-test 0000:01:00.0: buf[1328] : dfdfdfdfdfdfdfdf
[ 80.807851] pci-endpoint-test 0000:01:00.0: buf[1336] : dfdfdfdfdfdfdfdf
[ 80.814600] pci-endpoint-test 0000:01:00.0: buf[1344] : dfdfdfdfdfdfdfdf
[ 80.821339] pci-endpoint-test 0000:01:00.0: buf[1352] : dfdfdfdfdfdfdfdf
[ 80.828079] pci-endpoint-test 0000:01:00.0: buf[1360] : dfdfdfdfdfdfdfdf
[ 80.834870] pci-endpoint-test 0000:01:00.0: buf[1368] : dfdfdfdfdfdfdfdf
[ 80.841635] pci-endpoint-test 0000:01:00.0: buf[1376] : dfdfdfdfdfdfdfdf
[ 80.848386] pci-endpoint-test 0000:01:00.0: buf[1384] : dfdfdfdfdfdfdfdf
[ 80.855127] pci-endpoint-test 0000:01:00.0: buf[1392] : dfdfdfdfdfdfdfdf
[ 80.861864] pci-endpoint-test 0000:01:00.0: buf[1400] : dfdfdfdfdfdfdfdf
[ 80.868603] pci-endpoint-test 0000:01:00.0: buf[1408] : dfdfdfdfdfdfdfdf
[ 80.875337] pci-endpoint-test 0000:01:00.0: buf[1416] : dfdfdfdfdfdfdfdf
[ 80.882075] pci-endpoint-test 0000:01:00.0: buf[1424] : dfdfdfdfdfdfdfdf
[ 80.888810] pci-endpoint-test 0000:01:00.0: buf[1432] : dfdfdfdfdfdfdfdf
[ 80.895549] pci-endpoint-test 0000:01:00.0: buf[1440] : dfdfdfdfdfdfdfdf
[ 80.902290] pci-endpoint-test 0000:01:00.0: buf[1448] : dfdfdfdfdfdfdfdf
[ 80.909029] pci-endpoint-test 0000:01:00.0: buf[1456] : dfdfdfdfdfdfdfdf
[ 80.915765] pci-endpoint-test 0000:01:00.0: buf[1464] : dfdfdfdfdfdfdfdf
[ 80.922501] pci-endpoint-test 0000:01:00.0: buf[1472] : dfdfdfdfdfdfdfdf
[ 80.929238] pci-endpoint-test 0000:01:00.0: buf[1480] : dfdfdfdfdfdfdfdf
[ 80.935974] pci-endpoint-test 0000:01:00.0: buf[1488] : dfdfdfdfdfdfdfdf
[ 80.942716] pci-endpoint-test 0000:01:00.0: buf[1496] : dfdfdfdfdfdfdfdf
[ 80.949466] pci-endpoint-test 0000:01:00.0: buf[1504] : dfdfdfdfdfdfdfdf
[ 80.956203] pci-endpoint-test 0000:01:00.0: buf[1512] : dfdfdfdfdfdfdfdf
[ 80.962953] pci-endpoint-test 0000:01:00.0: buf[1520] : dfdfdfdfdfdfdfdf
[ 80.969694] pci-endpoint-test 0000:01:00.0: buf[1528] : dfdfdfdfdfdfdfdf
[ 80.976431] pci-endpoint-test 0000:01:00.0: buf[1536] : dfdfdfdfdfdfdfdf
[ 80.983166] pci-endpoint-test 0000:01:00.0: buf[1544] : dfdfdfdfdfdfdfdf
[ 80.989903] pci-endpoint-test 0000:01:00.0: buf[1552] : dfdfdfdfdfdfdfdf
[ 80.996638] pci-endpoint-test 0000:01:00.0: buf[1560] : dfdfdfdfdfdfdfdf
[ 81.003373] pci-endpoint-test 0000:01:00.0: buf[1568] : dfdfdfdfdfdfdfdf
[ 81.010107] pci-endpoint-test 0000:01:00.0: buf[1576] : dfdfdfdfdfdfdfdf
[ 81.016846] pci-endpoint-test 0000:01:00.0: buf[1584] : dfdfdfdfdfdfdfdf
[ 81.023582] pci-endpoint-test 0000:01:00.0: buf[1592] : dfdfdfdfdfdfdfdf
[ 81.030318] pci-endpoint-test 0000:01:00.0: buf[1600] : dfdfdfdfdfdfdfdf
[ 81.037054] pci-endpoint-test 0000:01:00.0: buf[1608] : dfdfdfdfdfdfdfdf
[ 81.043799] pci-endpoint-test 0000:01:00.0: buf[1616] : dfdfdfdfdfdfdfdf
[ 81.050534] pci-endpoint-test 0000:01:00.0: buf[1624] : dfdfdfdfdfdfdfdf
[ 81.057270] pci-endpoint-test 0000:01:00.0: buf[1632] : dfdfdfdfdfdfdfdf
[ 81.064003] pci-endpoint-test 0000:01:00.0: buf[1640] : dfdfdfdfdfdfdfdf
[ 81.070744] pci-endpoint-test 0000:01:00.0: buf[1648] : dfdfdfdfdfdfdfdf
[ 81.077483] pci-endpoint-test 0000:01:00.0: buf[1656] : dfdfdfdfdfdfdfdf
[ 81.084239] pci-endpoint-test 0000:01:00.0: buf[1664] : dfdfdfdfdfdfdfdf
[ 81.090985] pci-endpoint-test 0000:01:00.0: buf[1672] : dfdfdfdfdfdfdfdf
[ 81.097722] pci-endpoint-test 0000:01:00.0: buf[1680] : dfdfdfdfdfdfdfdf
[ 81.104459] pci-endpoint-test 0000:01:00.0: buf[1688] : dfdfdfdfdfdfdfdf
[ 81.111195] pci-endpoint-test 0000:01:00.0: buf[1696] : dfdfdfdfdfdfdfdf
[ 81.117930] pci-endpoint-test 0000:01:00.0: buf[1704] : dfdfdfdfdfdfdfdf
[ 81.124667] pci-endpoint-test 0000:01:00.0: buf[1712] : dfdfdfdfdfdfdfdf
[ 81.131403] pci-endpoint-test 0000:01:00.0: buf[1720] : dfdfdfdfdfdfdfdf
[ 81.138138] pci-endpoint-test 0000:01:00.0: buf[1728] : dfdfdfdfdfdfdfdf
[ 81.144878] pci-endpoint-test 0000:01:00.0: buf[1736] : dfdfdfdfdfdfdfdf
[ 81.151616] pci-endpoint-test 0000:01:00.0: buf[1744] : dfdfdfdfdfdfdfdf
[ 81.158352] pci-endpoint-test 0000:01:00.0: buf[1752] : dfdfdfdfdfdfdfdf
[ 81.165087] pci-endpoint-test 0000:01:00.0: buf[1760] : dfdfdfdfdfdfdfdf
[ 81.171824] pci-endpoint-test 0000:01:00.0: buf[1768] : dfdfdfdfdfdfdfdf
[ 81.178560] pci-endpoint-test 0000:01:00.0: buf[1776] : dfdfdfdfdfdfdfdf
[ 81.185293] pci-endpoint-test 0000:01:00.0: buf[1784] : dfdfdfdfdfdfdfdf
[ 81.192033] pci-endpoint-test 0000:01:00.0: buf[1792] : dfdfdfdfdfdfdfdf
[ 81.198770] pci-endpoint-test 0000:01:00.0: buf[1800] : dfdfdfdfdfdfdfdf
[ 81.205522] pci-endpoint-test 0000:01:00.0: buf[1808] : dfdfdfdfdfdfdfdf
[ 81.212272] pci-endpoint-test 0000:01:00.0: buf[1816] : dfdfdfdfdfdfdfdf
[ 81.219015] pci-endpoint-test 0000:01:00.0: buf[1824] : dfdfdfdfdfdfdfdf
[ 81.226317] pci-endpoint-test 0000:01:00.0: buf[1832] : dfdfdfdfdfdfdfdf
[ 81.233133] pci-endpoint-test 0000:01:00.0: buf[1840] : dfdfdfdfdfdfdfdf
[ 81.239882] pci-endpoint-test 0000:01:00.0: buf[1848] : dfdfdfdfdfdfdfdf
[ 81.246644] pci-endpoint-test 0000:01:00.0: buf[1856] : dfdfdfdfdfdfdfdf
[ 81.253382] pci-endpoint-test 0000:01:00.0: buf[1864] : dfdfdfdfdfdfdfdf
[ 81.260121] pci-endpoint-test 0000:01:00.0: buf[1872] : dfdfdfdfdfdfdfdf
[ 81.266856] pci-endpoint-test 0000:01:00.0: buf[1880] : dfdfdfdfdfdfdfdf
[ 81.273593] pci-endpoint-test 0000:01:00.0: buf[1888] : dfdfdfdfdfdfdfdf
[ 81.280331] pci-endpoint-test 0000:01:00.0: buf[1896] : dfdfdfdfdfdfdfdf
[ 81.287070] pci-endpoint-test 0000:01:00.0: buf[1904] : dfdfdfdfdfdfdfdf
[ 81.293805] pci-endpoint-test 0000:01:00.0: buf[1912] : dfdfdfdfdfdfdfdf
[ 81.300545] pci-endpoint-test 0000:01:00.0: buf[1920] : dfdfdfdfdfdfdfdf
[ 81.307280] pci-endpoint-test 0000:01:00.0: buf[1928] : dfdfdfdfdfdfdfdf
[ 81.314016] pci-endpoint-test 0000:01:00.0: buf[1936] : dfdfdfdfdfdfdfdf
[ 81.320750] pci-endpoint-test 0000:01:00.0: buf[1944] : dfdfdfdfdfdfdfdf
[ 81.327488] pci-endpoint-test 0000:01:00.0: buf[1952] : dfdfdfdfdfdfdfdf
[ 81.334221] pci-endpoint-test 0000:01:00.0: buf[1960] : dfdfdfdfdfdfdfdf
[ 81.340965] pci-endpoint-test 0000:01:00.0: buf[1968] : dfdfdfdfdfdfdfdf
[ 81.347722] pci-endpoint-test 0000:01:00.0: buf[1976] : dfdfdfdfdfdfdfdf
[ 81.354468] pci-endpoint-test 0000:01:00.0: buf[1984] : dfdfdfdfdfdfdfdf
[ 81.361205] pci-endpoint-test 0000:01:00.0: buf[1992] : dfdfdfdfdfdfdfdf
[ 81.367945] pci-endpoint-test 0000:01:00.0: buf[2000] : dfdfdfdfdfdfdfdf
[ 81.374679] pci-endpoint-test 0000:01:00.0: buf[2008] : dfdfdfdfdfdfdfdf
[ 81.381417] pci-endpoint-test 0000:01:00.0: buf[2016] : dfdfdfdfdfdfdfdf
[ 81.388150] pci-endpoint-test 0000:01:00.0: buf[2024] : dfdfdfdfdfdfdfdf
[ 81.394891] pci-endpoint-test 0000:01:00.0: buf[2032] : dfdfdfdfdfdfdfdf
[ 81.401624] pci-endpoint-test 0000:01:00.0: buf[2040] : dfdfdfdfdfdfdfdf
[ 81.408362] pci-endpoint-test 0000:01:00.0: buf[2048] : dfdfdfdfdfdfdfdf
[ 81.415096] pci-endpoint-test 0000:01:00.0: buf[2056] : dfdfdfdfdfdfdfdf
[ 81.421833] pci-endpoint-test 0000:01:00.0: buf[2064] : dfdfdfdfdfdfdfdf
[ 81.428570] pci-endpoint-test 0000:01:00.0: buf[2072] : dfdfdfdfdfdfdfdf
[ 81.435309] pci-endpoint-test 0000:01:00.0: buf[2080] : dfdfdfdfdfdfdfdf
[ 81.442045] pci-endpoint-test 0000:01:00.0: buf[2088] : dfdfdfdfdfdfdfdf
[ 81.448790] pci-endpoint-test 0000:01:00.0: buf[2096] : dfdfdfdfdfdfdfdf
[ 81.455527] pci-endpoint-test 0000:01:00.0: buf[2104] : dfdfdfdfdfdfdfdf
[ 81.462270] pci-endpoint-test 0000:01:00.0: buf[2112] : dfdfdfdfdfdfdfdf
[ 81.469020] pci-endpoint-test 0000:01:00.0: buf[2120] : dfdfdfdfdfdfdfdf
[ 81.475770] pci-endpoint-test 0000:01:00.0: buf[2128] : dfdfdfdfdfdfdfdf
[ 81.482505] pci-endpoint-test 0000:01:00.0: buf[2136] : dfdfdfdfdfdfdfdf
[ 81.489245] pci-endpoint-test 0000:01:00.0: buf[2144] : dfdfdfdfdfdfdfdf
[ 81.495981] pci-endpoint-test 0000:01:00.0: buf[2152] : dfdfdfdfdfdfdfdf
[ 81.502719] pci-endpoint-test 0000:01:00.0: buf[2160] : dfdfdfdfdfdfdfdf
[ 81.509464] pci-endpoint-test 0000:01:00.0: buf[2168] : dfdfdfdfdfdfdfdf
[ 81.516824] pci-endpoint-test 0000:01:00.0:
[ 81.516824]
[ 81.516824]
[ 81.516824]
[ 81.525562] pci-endpoint-test 0000:01:00.0: pci_endpoint_test_read
kzalloc:ffff0004b6392000 dma handle:7e92f000 buffer CRC:910c690d BAR
CRC:910c690d tmp buffer crc: 910c690d
READ ( 2176 bytes): OKAY
root@hihope-rzg2m:~# pcitest -r -s 2176
[ 85.302372] pci-endpoint-test 0000:01:00.0: buf[0] : dfdfdfdfdfdfdfdf
[ 85.308869] pci-endpoint-test 0000:01:00.0: buf[8] : dfdfdfdfdfdfdfdf
[ 85.315361] pci-endpoint-test 0000:01:00.0: buf[16] : dfdfdfdfdfdfdfdf
[ 85.321949] pci-endpoint-test 0000:01:00.0: buf[24] : dfdfdfdfdfdfdfdf
[ 85.328517] pci-endpoint-test 0000:01:00.0: buf[32] : dfdfdfdfdfdfdfdf
[ 85.335087] pci-endpoint-test 0000:01:00.0: buf[40] : dfdfdfdfdfdfdfdf
[ 85.341649] pci-endpoint-test 0000:01:00.0: buf[48] : dfdfdfdfdfdfdfdf
[ 85.348216] pci-endpoint-test 0000:01:00.0: buf[56] : dfdfdfdfdfdfdfdf
[ 85.354778] pci-endpoint-test 0000:01:00.0: buf[64] : dfdfdfdfdfdfdfdf
[ 85.361341] pci-endpoint-test 0000:01:00.0: buf[72] : dfdfdfdfdfdfdfdf
[ 85.367902] pci-endpoint-test 0000:01:00.0: buf[80] : dfdfdfdfdfdfdfdf
[ 85.374465] pci-endpoint-test 0000:01:00.0: buf[88] : dfdfdfdfdfdfdfdf
[ 85.381028] pci-endpoint-test 0000:01:00.0: buf[96] : dfdfdfdfdfdfdfdf
[ 85.387593] pci-endpoint-test 0000:01:00.0: buf[104] : dfdfdfdfdfdfdfdf
[ 85.394241] pci-endpoint-test 0000:01:00.0: buf[112] : dfdfdfdfdfdfdfdf
[ 85.400892] pci-endpoint-test 0000:01:00.0: buf[120] : dfdfdfdfdfdfdfdf
[ 85.407547] pci-endpoint-test 0000:01:00.0: buf[128] : dfdfdfdfdfdfdfdf
[ 85.414198] pci-endpoint-test 0000:01:00.0: buf[136] : dfdfdfdfdfdfdfdf
[ 85.420846] pci-endpoint-test 0000:01:00.0: buf[144] : dfdfdfdfdfdfdfdf
[ 85.427499] pci-endpoint-test 0000:01:00.0: buf[152] : dfdfdfdfdfdfdfdf
[ 85.434152] pci-endpoint-test 0000:01:00.0: buf[160] : dfdfdfdfdfdfdfdf
[ 85.440820] pci-endpoint-test 0000:01:00.0: buf[168] : dfdfdfdfdfdfdfdf
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[ 88.435521] pci-endpoint-test 0000:01:00.0: buf[1560] : dfdfdfdfdfdfdfdf
[ 88.442263] pci-endpoint-test 0000:01:00.0: buf[1568] : dfdfdfdfdfdfdfdf
[ 88.449012] pci-endpoint-test 0000:01:00.0: buf[1576] : dfdfdfdfdfdfdfdf
[ 88.455756] pci-endpoint-test 0000:01:00.0: buf[1584] : dfdfdfdfdfdfdfdf
[ 88.462494] pci-endpoint-test 0000:01:00.0: buf[1592] : dfdfdfdfdfdfdfdf
[ 88.469232] pci-endpoint-test 0000:01:00.0: buf[1600] : dfdfdfdfdfdfdfdf
[ 88.475967] pci-endpoint-test 0000:01:00.0: buf[1608] : dfdfdfdfdfdfdfdf
[ 88.482705] pci-endpoint-test 0000:01:00.0: buf[1616] : dfdfdfdfdfdfdfdf
[ 88.489442] pci-endpoint-test 0000:01:00.0: buf[1624] : dfdfdfdfdfdfdfdf
[ 88.496205] pci-endpoint-test 0000:01:00.0: buf[1632] : dfdfdfdfdfdfdfdf
[ 88.502942] pci-endpoint-test 0000:01:00.0: buf[1640] : dfdfdfdfdfdfdfdf
[ 88.509681] pci-endpoint-test 0000:01:00.0: buf[1648] : dfdfdfdfdfdfdfdf
[ 88.516416] pci-endpoint-test 0000:01:00.0: buf[1656] : dfdfdfdfdfdfdfdf
[ 88.523154] pci-endpoint-test 0000:01:00.0: buf[1664] : dfdfdfdfdfdfdfdf
[ 88.529895] pci-endpoint-test 0000:01:00.0: buf[1672] : dfdfdfdfdfdfdfdf
[ 88.536633] pci-endpoint-test 0000:01:00.0: buf[1680] : dfdfdfdfdfdfdfdf
[ 88.543371] pci-endpoint-test 0000:01:00.0: buf[1688] : dfdfdfdfdfdfdfdf
[ 88.550108] pci-endpoint-test 0000:01:00.0: buf[1696] : dfdfdfdfdfdfdfdf
[ 88.556844] pci-endpoint-test 0000:01:00.0: buf[1704] : dfdfdfdfdfdfdfdf
[ 88.563583] pci-endpoint-test 0000:01:00.0: buf[1712] : dfdfdfdfdfdfdfdf
[ 88.570318] pci-endpoint-test 0000:01:00.0: buf[1720] : dfdfdfdfdfdfdfdf
[ 88.577055] pci-endpoint-test 0000:01:00.0: buf[1728] : dfdfdfdfdfdfdfdf
[ 88.583791] pci-endpoint-test 0000:01:00.0: buf[1736] : dfdfdfdfdfdfdfdf
[ 88.590530] pci-endpoint-test 0000:01:00.0: buf[1744] : dfdfdfdfdfdfdfdf
[ 88.597263] pci-endpoint-test 0000:01:00.0: buf[1752] : dfdfdfdfdfdfdfdf
[ 88.604003] pci-endpoint-test 0000:01:00.0: buf[1760] : dfdfdfdfdfdfdfdf
[ 88.610740] pci-endpoint-test 0000:01:00.0: buf[1768] : dfdfdfdfdfdfdfdf
[ 88.617505] pci-endpoint-test 0000:01:00.0: buf[1776] : dfdfdfdfdfdfdfdf
[ 88.624251] pci-endpoint-test 0000:01:00.0: buf[1784] : dfdfdfdfdfdfdfdf
[ 88.630996] pci-endpoint-test 0000:01:00.0: buf[1792] : dfdfdfdfdfdfdfdf
[ 88.637731] pci-endpoint-test 0000:01:00.0: buf[1800] : dfdfdfdfdfdfdfdf
[ 88.644470] pci-endpoint-test 0000:01:00.0: buf[1808] : dfdfdfdfdfdfdfdf
[ 88.651206] pci-endpoint-test 0000:01:00.0: buf[1816] : dfdfdfdfdfdfdfdf
[ 88.657945] pci-endpoint-test 0000:01:00.0: buf[1824] : dfdfdfdfdfdfdfdf
[ 88.664682] pci-endpoint-test 0000:01:00.0: buf[1832] : dfdfdfdfdfdfdfdf
[ 88.671420] pci-endpoint-test 0000:01:00.0: buf[1840] : dfdfdfdfdfdfdfdf
[ 88.678155] pci-endpoint-test 0000:01:00.0: buf[1848] : dfdfdfdfdfdfdfdf
[ 88.684892] pci-endpoint-test 0000:01:00.0: buf[1856] : dfdfdfdfdfdfdfdf
[ 88.691626] pci-endpoint-test 0000:01:00.0: buf[1864] : dfdfdfdfdfdfdfdf
[ 88.698365] pci-endpoint-test 0000:01:00.0: buf[1872] : dfdfdfdfdfdfdfdf
[ 88.705103] pci-endpoint-test 0000:01:00.0: buf[1880] : dfdfdfdfdfdfdfdf
[ 88.711839] pci-endpoint-test 0000:01:00.0: buf[1888] : dfdfdfdfdfdfdfdf
[ 88.718574] pci-endpoint-test 0000:01:00.0: buf[1896] : dfdfdfdfdfdfdfdf
[ 88.725310] pci-endpoint-test 0000:01:00.0: buf[1904] : dfdfdfdfdfdfdfdf
[ 88.732051] pci-endpoint-test 0000:01:00.0: buf[1912] : dfdfdfdfdfdfdfdf
[ 88.738795] pci-endpoint-test 0000:01:00.0: buf[1920] : dfdfdfdfdfdfdfdf
[ 88.745543] pci-endpoint-test 0000:01:00.0: buf[1928] : dfdfdfdfdfdfdfdf
[ 88.752289] pci-endpoint-test 0000:01:00.0: buf[1936] : dfdfdfdfdfdfdfdf
[ 88.759029] pci-endpoint-test 0000:01:00.0: buf[1944] : dfdfdfdfdfdfdfdf
[ 88.765769] pci-endpoint-test 0000:01:00.0: buf[1952] : dfdfdfdfdfdfdfdf
[ 88.772505] pci-endpoint-test 0000:01:00.0: buf[1960] : dfdfdfdfdfdfdfdf
[ 88.779245] pci-endpoint-test 0000:01:00.0: buf[1968] : dfdfdfdfdfdfdfdf
[ 88.785978] pci-endpoint-test 0000:01:00.0: buf[1976] : dfdfdfdfdfdfdfdf
[ 88.792720] pci-endpoint-test 0000:01:00.0: buf[1984] : dfdfdfdfdfdfdfdf
[ 88.799453] pci-endpoint-test 0000:01:00.0: buf[1992] : dfdfdfdfdfdfdfdf
[ 88.806194] pci-endpoint-test 0000:01:00.0: buf[2000] : dfdfdfdfdfdfdfdf
[ 88.812930] pci-endpoint-test 0000:01:00.0: buf[2008] : dfdfdfdfdfdfdfdf
[ 88.819668] pci-endpoint-test 0000:01:00.0: buf[2016] : dfdfdfdfdfdfdfdf
[ 88.826403] pci-endpoint-test 0000:01:00.0: buf[2024] : dfdfdfdfdfdfdfdf
[ 88.833207] pci-endpoint-test 0000:01:00.0: buf[2032] : dfdfdfdfdfdfdfdf
[ 88.839961] pci-endpoint-test 0000:01:00.0: buf[2040] : dfdfdfdfdfdfdfdf
[ 88.846710] pci-endpoint-test 0000:01:00.0: buf[2048] : dfdfdfdfdfdfdfdf
[ 88.853463] pci-endpoint-test 0000:01:00.0: buf[2056] : dfdfdfdfdfdfdfdf
[ 88.860202] pci-endpoint-test 0000:01:00.0: buf[2064] : dfdfdfdfdfdfdfdf
[ 88.866939] pci-endpoint-test 0000:01:00.0: buf[2072] : dfdfdfdfdfdfdfdf
[ 88.873675] pci-endpoint-test 0000:01:00.0: buf[2080] : dfdfdfdfdfdfdfdf
[ 88.880410] pci-endpoint-test 0000:01:00.0: buf[2088] : dfdfdfdfdfdfdfdf
[ 88.887145] pci-endpoint-test 0000:01:00.0: buf[2096] : dfdfdfdfdfdfdfdf
[ 88.893879] pci-endpoint-test 0000:01:00.0: buf[2104] : dfdfdfdfdfdfdfdf
[ 88.900619] pci-endpoint-test 0000:01:00.0: buf[2112] : dfdfdfdfdfdfdfdf
[ 88.907353] pci-endpoint-test 0000:01:00.0: buf[2120] : dfdfdfdfdfdfdfdf
[ 88.914091] pci-endpoint-test 0000:01:00.0: buf[2128] : dfdfdfdfdfdfdfdf
[ 88.920825] pci-endpoint-test 0000:01:00.0: buf[2136] : dfdfdfdfdfdfdfdf
[ 88.927562] pci-endpoint-test 0000:01:00.0: buf[2144] : dfdfdfdfdfdfdfdf
[ 88.934303] pci-endpoint-test 0000:01:00.0: buf[2152] : dfdfdfdfdfdfdfdf
[ 88.941043] pci-endpoint-test 0000:01:00.0: buf[2160] : dfdfdfdfdfdfdfdf
[ 88.947781] pci-endpoint-test 0000:01:00.0: buf[2168] : dfdfdfdfdfdfdfdf
[ 88.955146] pci-endpoint-test 0000:01:00.0:
[ 88.955146]
[ 88.955146]
[ 88.955146]
[ 88.963900] pci-endpoint-test 0000:01:00.0: pci_endpoint_test_read
kzalloc:ffff0004b6393000 dma handle:7e93c800 buffer CRC:ce535039 BAR
CRC:910c690d tmp buffer crc: ce535039
READ ( 2176 bytes): NOT OKAY
And starangely even tmp_buffer has the value of 0xDF, but the CRC is screwed.
Cheers,
--Prabhakar
> Best regards,
> Yoshihiro Shimoda
>
> > Cheers,
> > --Prabhakar
next prev parent reply other threads:[~2020-04-01 9:24 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-03-18 11:37 PCIe EPF Lad, Prabhakar
2020-03-20 5:28 ` Kishon Vijay Abraham I
2020-03-21 22:49 ` Lad, Prabhakar
2020-03-24 1:58 ` Kishon Vijay Abraham I
2020-03-24 14:41 ` Lad, Prabhakar
2020-03-28 18:44 ` Lad, Prabhakar
2020-03-29 14:04 ` Lad, Prabhakar
2020-03-30 11:59 ` Kishon Vijay Abraham I
2020-03-30 13:09 ` Lad, Prabhakar
2020-03-30 13:20 ` Kishon Vijay Abraham I
2020-03-30 13:46 ` Lad, Prabhakar
2020-03-31 7:10 ` Yoshihiro Shimoda
2020-03-31 17:25 ` Lad, Prabhakar
2020-04-01 1:25 ` Yoshihiro Shimoda
2020-04-01 8:00 ` Lad, Prabhakar
2020-04-01 8:50 ` Yoshihiro Shimoda
2020-04-01 9:24 ` Lad, Prabhakar [this message]
2020-04-02 1:22 ` Yoshihiro Shimoda
2020-04-02 4:58 ` Yoshihiro Shimoda
2020-04-02 17:44 ` Lad, Prabhakar
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