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[net-next,v2,0/5] seg6: add support for SRv6 End.DT4 behavior

by Andrea Mayer

This patchset provides support for the SRv6 End.DT4 behavior. The SRv6 End.DT4 is used to implement multi-tenant IPv4 L3 VPN. It decapsulates the received packets and performs IPv4 routing lookup in the routing table of the tenant. The SRv6 End.DT4 Linux implementation leverages a VRF device. The SRv6 End.DT4 is defined in the SRv6 Network Programming [1]. - Patch 1/5 is needed to solve a pre-existing issue with tunneled packets when a sniffer is attached; - Patch 2/5 improves the management of the seg6local attributes used by the SRv6 behaviors; - Patch 3/5 introduces two callbacks used for customizing the creation/destruction of a SRv6 behavior; - Patch 4/5 is the core patch that adds support for the SRv6 End.DT4 behavior; - Patch 5/5 adds the selftest for SRv6 End.DT4 behavior. I would like to thank David Ahern for his support during the development of this patch set. Comments, suggestions and improvements are very welcome! Thanks, Andrea Mayer v2 no changes made: resubmitted after false build report. v1 improve comments; add new patch 2/5 titled: seg6: improve management of behavior attributes seg6: add support for the SRv6 End.DT4 behavior - remove the inline keyword in the definition of fib6_config_get_net(). selftests: add selftest for the SRv6 End.DT4 behavior - add check for the vrf sysctl [1] https://tools.ietf.org/html/draft-ietf-spring-srv6-network-programming Andrea Mayer (5): vrf: add mac header for tunneled packets when sniffer is attached seg6: improve management of behavior attributes seg6: add callbacks for customizing the creation/destruction of a behavior seg6: add support for the SRv6 End.DT4 behavior selftests: add selftest for the SRv6 End.DT4 behavior drivers/net/vrf.c | 78 ++- net/ipv6/seg6_local.c | 370 ++++++++++++- .../selftests/net/srv6_end_dt4_l3vpn_test.sh | 494 ++++++++++++++++++ 3 files changed, 927 insertions(+), 15 deletions(-) create mode 100755 tools/testing/selftests/net/srv6_end_dt4_l3vpn_test.sh -- 2.20.1

5 years

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[PATCH AUTOSEL 5.9 26/55] wireguard: selftests: check that route_me_harder packets use the right sk

by Sasha Levin

From: "Jason A. Donenfeld" <Jason(a)zx2c4.com> [ Upstream commit af8afcf1fdd5f365f70e2386c2d8c7a1abd853d7 ] If netfilter changes the packet mark, the packet is rerouted. The ip_route_me_harder family of functions fails to use the right sk, opting to instead use skb->sk, resulting in a routing loop when used with tunnels. With the next change fixing this issue in netfilter, test for the relevant condition inside our test suite, since wireguard was where the bug was discovered. Reported-by: Chen Minqiang <ptpt52(a)gmail.com> Signed-off-by: Jason A. Donenfeld <Jason(a)zx2c4.com> Signed-off-by: Pablo Neira Ayuso <pablo(a)netfilter.org> Signed-off-by: Sasha Levin <sashal(a)kernel.org> --- tools/testing/selftests/wireguard/netns.sh | 8 ++++++++ tools/testing/selftests/wireguard/qemu/kernel.config | 2 ++ 2 files changed, 10 insertions(+) diff --git a/tools/testing/selftests/wireguard/netns.sh b/tools/testing/selftests/wireguard/netns.sh index d77f4829f1e07..74c69b75f6f5a 100755 --- a/tools/testing/selftests/wireguard/netns.sh +++ b/tools/testing/selftests/wireguard/netns.sh @@ -316,6 +316,14 @@ pp sleep 3 n2 ping -W 1 -c 1 192.168.241.1 n1 wg set wg0 peer "$pub2" persistent-keepalive 0 +# Test that sk_bound_dev_if works +n1 ping -I wg0 -c 1 -W 1 192.168.241.2 +# What about when the mark changes and the packet must be rerouted? +n1 iptables -t mangle -I OUTPUT -j MARK --set-xmark 1 +n1 ping -c 1 -W 1 192.168.241.2 # First the boring case +n1 ping -I wg0 -c 1 -W 1 192.168.241.2 # Then the sk_bound_dev_if case +n1 iptables -t mangle -D OUTPUT -j MARK --set-xmark 1 + # Test that onion routing works, even when it loops n1 wg set wg0 peer "$pub3" allowed-ips 192.168.242.2/32 endpoint 192.168.241.2:5 ip1 addr add 192.168.242.1/24 dev wg0 diff --git a/tools/testing/selftests/wireguard/qemu/kernel.config b/tools/testing/selftests/wireguard/qemu/kernel.config index d531de13c95b0..4eecb432a66c1 100644 --- a/tools/testing/selftests/wireguard/qemu/kernel.config +++ b/tools/testing/selftests/wireguard/qemu/kernel.config @@ -18,10 +18,12 @@ CONFIG_NF_NAT=y CONFIG_NETFILTER_XTABLES=y CONFIG_NETFILTER_XT_NAT=y CONFIG_NETFILTER_XT_MATCH_LENGTH=y +CONFIG_NETFILTER_XT_MARK=y CONFIG_NF_CONNTRACK_IPV4=y CONFIG_NF_NAT_IPV4=y CONFIG_IP_NF_IPTABLES=y CONFIG_IP_NF_FILTER=y +CONFIG_IP_NF_MANGLE=y CONFIG_IP_NF_NAT=y CONFIG_IP_ADVANCED_ROUTER=y CONFIG_IP_MULTIPLE_TABLES=y -- 2.27.0

5 years

3
3
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[PATCH v2 00/13] Introduce seqnum_ops

by Shuah Khan

Sequence Number api provides interfaces for unsigned atomic up counters leveraging atomic_t and atomic64_t ops underneath. There are a number of atomic_t usages in the kernel where atomic_t api is used for counting sequence numbers and other statistical counters. Several of these usages, convert atomic_read() and atomic_inc_return() return values to unsigned. Introducing sequence number ops supports these use-cases with a standard core-api. The atomic_t api provides a wide range of atomic operations as a base api to implement atomic counters, bitops, spinlock interfaces. The usages also evolved into being used for resource lifetimes and state management. The refcount_t api was introduced to address resource lifetime problems related to atomic_t wrapping. There is a large overlap between the atomic_t api used for resource lifetimes and just counters, stats, and sequence numbers. It has become difficult to differentiate between the atomic_t usages that should be converted to refcount_t and the ones that can be left alone. Introducing seqnum_ops to wrap the usages that are stats, counters, sequence numbers makes it easier for tools that scan for underflow and overflow on atomic_t usages to detect overflow and underflows to scan just the cases that are prone to errors. In addition, to supporting sequence number use-cases, Sequence Number Ops helps differentiate atomic_t counter usages from atomic_t usages that guard object lifetimes, hence prone to overflow and underflow errors from up counting use-cases. It becomes easier for tools that scan for underflow and overflow on atomic_t usages to detect overflow and underflows to scan just the cases that are prone to errors. Changes since v1: - Removed dec based on Greg KH's comments - Removed read/set/inc based on the discussion with Peter Zijlstra - Interfaces are restricted to init, increment and return new value, and fetch current value. - Interfaces return u32 and u64 - a few reviewers suggested unsigned. After reviewing a few use-cases, I determined this is a good path forward. It adds unsigned atomic support that doesn't exist now, and simplifies code in drivers that currently convert atomic_t return values to unsigned. All the drivers changes included in this series used to convert atomic_t returns to unsigned. Patch v1 thread: https://lore.kernel.org/lkml/cover.1605027593.git.skhan@linuxfoundation.org/ Counters thread: lore.kernel.org/lkml/cover.1602209970.git.skhan@linuxfoundation.org Shuah Khan (13): seqnum_ops: Introduce Sequence Number Ops selftests: lib:test_seqnum_ops: add new test for seqnum_ops drivers/acpi: convert seqno seqnum_ops drivers/acpi/apei: convert seqno to seqnum_ops drivers/base/test/test_async_driver_probe: convert to use seqnum_ops drivers/char/ipmi: convert stats to use seqnum_ops drivers/edac: convert pci counters to seqnum_ops drivers/oprofile: convert stats to use seqnum_ops drivers/staging/rtl8723bs: convert stats to use seqnum_ops usb: usbip/vhci: convert seqno to seqnum_ops drivers/staging/rtl8188eu: convert stats to use seqnum_ops drivers/staging/unisys/visorhba: convert stats to use seqnum_ops security/integrity/ima: converts stats to seqnum_ops Documentation/core-api/atomic_ops.rst | 4 + Documentation/core-api/index.rst | 1 + Documentation/core-api/seqnum_ops.rst | 89 +++++++++++++ MAINTAINERS | 8 ++ drivers/acpi/acpi_extlog.c | 8 +- drivers/acpi/apei/ghes.c | 8 +- drivers/base/test/test_async_driver_probe.c | 28 +++-- drivers/char/ipmi/ipmi_msghandler.c | 9 +- drivers/char/ipmi/ipmi_si_intf.c | 9 +- drivers/char/ipmi/ipmi_ssif.c | 9 +- drivers/edac/edac_pci.h | 5 +- drivers/edac/edac_pci_sysfs.c | 30 ++--- drivers/oprofile/buffer_sync.c | 9 +- drivers/oprofile/event_buffer.c | 3 +- drivers/oprofile/oprof.c | 3 +- drivers/oprofile/oprofile_stats.c | 11 +- drivers/oprofile/oprofile_stats.h | 11 +- drivers/oprofile/oprofilefs.c | 3 +- drivers/staging/rtl8188eu/core/rtw_mlme_ext.c | 23 +++- .../staging/rtl8188eu/include/rtw_mlme_ext.h | 3 +- drivers/staging/rtl8723bs/core/rtw_cmd.c | 3 +- drivers/staging/rtl8723bs/core/rtw_mlme_ext.c | 33 +++-- drivers/staging/rtl8723bs/include/rtw_cmd.h | 3 +- .../staging/rtl8723bs/include/rtw_mlme_ext.h | 3 +- .../staging/unisys/visorhba/visorhba_main.c | 21 ++-- drivers/usb/usbip/vhci.h | 3 +- drivers/usb/usbip/vhci_hcd.c | 7 +- drivers/usb/usbip/vhci_rx.c | 5 +- include/linux/oprofile.h | 3 +- include/linux/seqnum_ops.h | 118 +++++++++++++++++ lib/Kconfig | 9 ++ lib/Makefile | 1 + lib/test_seqnum_ops.c | 119 ++++++++++++++++++ security/integrity/ima/ima.h | 5 +- security/integrity/ima/ima_api.c | 3 +- security/integrity/ima/ima_fs.c | 5 +- security/integrity/ima/ima_queue.c | 7 +- tools/testing/selftests/lib/Makefile | 1 + tools/testing/selftests/lib/config | 1 + .../testing/selftests/lib/test_seqnum_ops.sh | 10 ++ 40 files changed, 524 insertions(+), 110 deletions(-) create mode 100644 Documentation/core-api/seqnum_ops.rst create mode 100644 include/linux/seqnum_ops.h create mode 100644 lib/test_seqnum_ops.c create mode 100755 tools/testing/selftests/lib/test_seqnum_ops.sh -- 2.27.0

5 years

1
1
0 0

Corporate and Personal Loan::,

by Investment Corporate

Hello linux-kselftest(a)vger.kernel.org We are Base Investment Company offering Corporate and Personal Loan at 3% Interest Rate for a duration of 10Years. We also pay 1% commission to brokers, who introduce project owners for finance or other opportunities. Please get back to me if you are interested for more details. Yours faithfully, Hashim Murrah

5 years

1
0
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[PATCHv2 0/2] selftests: pmtu.sh: improve the test result processing

by Po-Hsu Lin

The pmtu.sh test script treats all non-zero return code as a failure, thus it will be marked as FAILED when some sub-test got skipped. This patchset will: 1. Use the kselftest framework skip code $ksft_skip to replace the hardcoded SKIP return code. 2. Improve the result processing, the test will be marked as PASSED if nothing goes wrong and not all the tests were skipped. Po-Hsu Lin (2): selftests: pmtu.sh: use $ksft_skip for skipped return code selftests: pmtu.sh: improve the test result processing tools/testing/selftests/net/pmtu.sh | 79 +++++++++++++++++++++---------------- 1 file changed, 46 insertions(+), 33 deletions(-) -- 2.7.4

5 years

2
3
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Re: [PATCH v2 3/3] kunit: Introduce get_file_path() helper

by Andy Shevchenko

On Wed, Oct 28, 2020 at 10:29:15AM +0100, SeongJae Park wrote: > On Mon, 26 Oct 2020 18:59:27 +0200 Andy Shevchenko <andriy.shevchenko(a)linux.intel.com> wrote: > > > Helper allows to derive file names depending on --build_dir argument. > > > > Signed-off-by: Andy Shevchenko <andriy.shevchenko(a)linux.intel.com> > > Reviewed-by: Brendan Higgins <brendanhiggins(a)google.com> > > Tested-by: Brendan Higgins <brendanhiggins(a)google.com> > > Reviewed-by: SeongJae Park <sjpark(a)amazon.de> Thanks! Brendan, Shuah, can we get this series applied, please? -- With Best Regards, Andy Shevchenko

5 years

3
5
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[PATCH 00/13] Introduce seqnum_ops

by Shuah Khan

There are a number of atomic_t usages in the kernel where atomic_t api is used strictly for counting sequence numbers and other statistical counters and not for managing object lifetime. The purpose of these Sequence Number Ops is to clearly differentiate atomic_t counter usages from atomic_t usages that guard object lifetimes, hence prone to overflow and underflow errors. The atomic_t api provides a wide range of atomic operations as a base api to implement atomic counters, bitops, spinlock interfaces. The usages also evolved into being used for resource lifetimes and state management. The refcount_t api was introduced to address resource lifetime problems related to atomic_t wrapping. There is a large overlap between the atomic_t api used for resource lifetimes and just counters, stats, and sequence numbers. It has become difficult to differentiate between the atomic_t usages that should be converted to refcount_t and the ones that can be left alone. Introducing seqnum_ops to wrap the usages that are stats, counters, sequence numbers makes it easier for tools that scan for underflow and overflow on atomic_t usages to detect overflow and underflows to scan just the cases that are prone to errors. Sequence Number api provides interfaces for simple atomic_t counter usages that just count, and don't guard resource lifetimes. The seqnum_ops are built on top of atomic_t api, providing a smaller subset of atomic_t interfaces necessary to support atomic_t usages as simple counters. This api has init/set/inc/dec/read and doesn't support any other atomic_t ops with the intent to restrict the use of these interfaces as simple counting usages. Sequence Numbers wrap around to INT_MIN when it overflows and should not be used to guard resource lifetimes, device usage and open counts that control state changes, and pm states. Overflowing to INT_MIN is consistent with the atomic_t api, which it is built on top of. Using seqnum to guard lifetimes could lead to use-after free when it overflows and undefined behavior when used to manage state changes and device usage/open states. In addition this patch series converts a few drivers to use the new api. The following criteria is used for select variables for conversion: 1. Variable doesn't guard object lifetimes, manage state changes e.g: device usage counts, device open counts, and pm states. 2. Variable is used for stats and counters. 3. The conversion doesn't change the overflow behavior. 4. Note: inc_return() usages are changed to _inc() followed by _read() Patches: 03/13, 04/13, 09/13, 10/13, 11/13 5. drivers/acpi and drivers/acpi/apei patches have been reviewed before the rename, however in addition to rename, inc_return() usages are changed to _inc() followed by _read() 6. test_async_driver_probe, char/ipmi, and edac patches have been reviewed and no changes other than the rename to seqnum_ops. 7. security/integrity/ima: Okay to depend on CONFIG_64BIT? The work for this is a follow-on to the discussion and review of Introduce Simple atomic counters patch series: //lore.kernel.org/lkml/cover.1602209970.git.skhan(a)linuxfoundation.org/ Based on the feedback to restrict and limit the scope: - dropped inc_return() - renamed interfaces to match the intent and also shorten the interface names. Shuah Khan (13): seqnum_ops: Introduce Sequence Number Ops selftests: lib:test_seqnum_ops: add new test for seqnum_ops drivers/acpi: convert seqno seqnum_ops drivers/acpi/apei: convert seqno to seqnum_ops drivers/base/test/test_async_driver_probe: convert to use seqnum_ops drivers/char/ipmi: convert stats to use seqnum_ops drivers/edac: convert pci counters to seqnum_ops drivers/oprofile: convert stats to use seqnum_ops drivers/staging/rtl8723bs: convert stats to use seqnum_ops usb: usbip/vhci: convert seqno to seqnum_ops drivers/staging/rtl8188eu: convert stats to use seqnum_ops drivers/staging/unisys/visorhba: convert stats to use seqnum_ops security/integrity/ima: converts stats to seqnum_ops Documentation/core-api/atomic_ops.rst | 4 + Documentation/core-api/index.rst | 1 + Documentation/core-api/seqnum_ops.rst | 126 ++++++++++++++ MAINTAINERS | 8 + drivers/acpi/acpi_extlog.c | 6 +- drivers/acpi/apei/ghes.c | 6 +- drivers/base/test/test_async_driver_probe.c | 26 +-- drivers/char/ipmi/ipmi_msghandler.c | 9 +- drivers/char/ipmi/ipmi_si_intf.c | 9 +- drivers/char/ipmi/ipmi_ssif.c | 9 +- drivers/edac/edac_pci.h | 5 +- drivers/edac/edac_pci_sysfs.c | 28 ++-- drivers/oprofile/buffer_sync.c | 9 +- drivers/oprofile/event_buffer.c | 3 +- drivers/oprofile/oprof.c | 3 +- drivers/oprofile/oprofile_stats.c | 11 +- drivers/oprofile/oprofile_stats.h | 11 +- drivers/oprofile/oprofilefs.c | 3 +- drivers/staging/rtl8188eu/core/rtw_mlme_ext.c | 23 ++- .../staging/rtl8188eu/include/rtw_mlme_ext.h | 3 +- drivers/staging/rtl8723bs/core/rtw_cmd.c | 3 +- drivers/staging/rtl8723bs/core/rtw_mlme_ext.c | 33 ++-- drivers/staging/rtl8723bs/include/rtw_cmd.h | 3 +- .../staging/rtl8723bs/include/rtw_mlme_ext.h | 3 +- .../staging/unisys/visorhba/visorhba_main.c | 37 +++-- drivers/usb/usbip/vhci.h | 3 +- drivers/usb/usbip/vhci_hcd.c | 9 +- drivers/usb/usbip/vhci_rx.c | 3 +- include/linux/oprofile.h | 3 +- include/linux/seqnum_ops.h | 154 ++++++++++++++++++ lib/Kconfig | 9 + lib/Makefile | 1 + lib/test_seqnum_ops.c | 154 ++++++++++++++++++ security/integrity/ima/ima.h | 5 +- security/integrity/ima/ima_api.c | 2 +- security/integrity/ima/ima_fs.c | 4 +- security/integrity/ima/ima_queue.c | 7 +- tools/testing/selftests/lib/Makefile | 1 + tools/testing/selftests/lib/config | 1 + .../testing/selftests/lib/test_seqnum_ops.sh | 10 ++ 40 files changed, 637 insertions(+), 111 deletions(-) create mode 100644 Documentation/core-api/seqnum_ops.rst create mode 100644 include/linux/seqnum_ops.h create mode 100644 lib/test_seqnum_ops.c create mode 100755 tools/testing/selftests/lib/test_seqnum_ops.sh -- 2.27.0

5 years

3
6
0 0

[PATCH v2 0/5] Add a dirty logging performance test

by Ben Gardon

Currently KVM lacks a simple, userspace agnostic, performance benchmark for dirty logging. Such a benchmark will be beneficial for ensuring that dirty logging performance does not regress, and to give a common baseline for validating performance improvements. The dirty log perf test introduced in this series builds on aspects of the existing demand paging perf test and provides time-based performance metrics for enabling and disabling dirty logging, getting the dirty log, and dirtying memory. While the test currently only has a build target for x86, I expect it will work on, or be easily modified to support other architectures. This series was tested by running the following invocations on an Intel Skylake machine after apply all commits in the series: dirty_log_perf_test -b 20m -i 100 -v 64 dirty_log_perf_test -b 20g -i 5 -v 4 dirty_log_perf_test -b 4g -i 5 -v 32 demand_paging_test -b 20m -v 64 demand_paging_test -b 20g -v 4 demand_paging_test -b 4g -v 32 All behaved as expected. v1 -> v2 changes: (in response to comments from Peter Xu) - Removed pr_debugs from main test thread while waiting on vCPUs to reduce log spam - Fixed a bug in iteration counting that caused the population stage to be counted as part of the first dirty logging pass - Fixed a bug in which the test failed to wait for the population stage for all but the first vCPU. - Refactored the common code in perf_test_util.c/h - Moved testing description to cover letter - Renamed timespec_diff_now to timespec_elapsed Ben Gardon (5): KVM: selftests: Remove address rounding in guest code KVM: selftests: Factor code out of demand_paging_test KVM: selftests: Simplify demand_paging_test with timespec_diff_now KVM: selftests: Add wrfract to common guest code KVM: selftests: Introduce the dirty log perf test tools/testing/selftests/kvm/.gitignore | 1 + tools/testing/selftests/kvm/Makefile | 7 +- .../selftests/kvm/demand_paging_test.c | 231 ++--------- .../selftests/kvm/dirty_log_perf_test.c | 381 ++++++++++++++++++ .../selftests/kvm/include/perf_test_util.h | 51 +++ .../testing/selftests/kvm/include/test_util.h | 2 + .../selftests/kvm/lib/perf_test_util.c | 166 ++++++++ tools/testing/selftests/kvm/lib/test_util.c | 22 +- 8 files changed, 661 insertions(+), 200 deletions(-) create mode 100644 tools/testing/selftests/kvm/dirty_log_perf_test.c create mode 100644 tools/testing/selftests/kvm/include/perf_test_util.h create mode 100644 tools/testing/selftests/kvm/lib/perf_test_util.c -- 2.29.1.341.ge80a0c044ae-goog

5 years

3
11
0 0

RE: [PATCH v3 1/2] dma-mapping: add benchmark support for streaming DMA APIs

by Song Bao Hua (Barry Song)

> -----Original Message----- > From: John Garry > Sent: Wednesday, November 11, 2020 10:37 PM > To: Song Bao Hua (Barry Song) <song.bao.hua(a)hisilicon.com>; > iommu(a)lists.linux-foundation.org; hch(a)lst.de; robin.murphy(a)arm.com; > m.szyprowski(a)samsung.com > Cc: linux-kselftest(a)vger.kernel.org; Will Deacon <will(a)kernel.org>; Joerg > Roedel <joro(a)8bytes.org>; Linuxarm <linuxarm(a)huawei.com>; xuwei (O) > <xuwei5(a)huawei.com>; Shuah Khan <shuah(a)kernel.org> > Subject: Re: [PATCH v3 1/2] dma-mapping: add benchmark support for > streaming DMA APIs > > On 11/11/2020 01:29, Song Bao Hua (Barry Song) wrote: > > I'd like to think checking this here would be overdesign. We just give users the > > freedom to bind any device they care about to the benchmark driver. Usually > > that means a real hardware either behind an IOMMU or through a direct > > mapping. > > > > if for any reason users put a wrong "device", that is the choice of users. > > Right, but if the device simply has no DMA ops supported, it could be > better to fail the probe rather than let them try the test at all. > > Anyhow, > > the below code will still handle it properly and users will get a report in which > > everything is zero. > > > > +static int map_benchmark_thread(void *data) > > +{ > > ... > > + dma_addr = dma_map_single(map->dev, buf, PAGE_SIZE, > DMA_BIDIRECTIONAL); > > + if (unlikely(dma_mapping_error(map->dev, dma_addr))) { > > Doing this is proper, but I am not sure if this tells the user the real > problem. Telling users the real problem isn't the design intention of this test benchmark. It is never the purpose of this benchmark. > > > + pr_err("dma_map_single failed on %s\n", > dev_name(map->dev)); > > Not sure why use pr_err() over dev_err(). We are reporting errors in dma-benchmark driver rather than reporting errors in the driver of the specific device. I think we should have "dma-benchmark" as the prefix while printing the name of the device by dev_name(). > > > + ret = -ENOMEM; > > + goto out; > > + } > > Thanks, > John Thanks Barry

5 years

1
0
0 0

Corporate and Personal Loan *

by Investment Corporate

Hello linux-kselftest(a)vger.kernel.org We are Base Investment Company offering Corporate and Personal Loan at 3% Interest Rate for a duration of 10Years. We also pay 1% commission to brokers, who introduce project owners for finance or other opportunities. Please get back to me if you are interested for more details. Yours faithfully, Hashim Murrah

5 years

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