| Commit message (Collapse) | Author | Age | Files | Lines |
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git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux
Pull powerpc fixes from Michael Ellerman:
- Fix IOMMU table initialisation when doing kdump over SR-IOV
- Fix incorrect RTAS function name for resetting TCE tables
- Fix fpu_signal selftest failures since a recent change
Thanks to Gaurav Batra and Nathan Lynch.
* tag 'powerpc-6.8-5' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux:
selftests/powerpc: Fix fpu_signal failures
powerpc/rtas: use correct function name for resetting TCE tables
powerpc/pseries/iommu: IOMMU table is not initialized for kdump over SR-IOV
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My recent commit e5d00aaac651 ("selftests/powerpc: Check all FPRs in
fpu_preempt") inadvertently broke the fpu_signal test.
It needs to take into account that fpu_preempt now loads 32 FPRs, so
enlarge darray.
Also use the newly added randomise_darray() to properly randomise darray.
Finally the checking done in signal_fpu_sig() needs to skip checking
f30/f31, because they are used as scratch registers in check_all_fprs(),
called by preempt_fpu(), and so could hold other values when the signal
is taken.
Fixes: e5d00aaac651 ("selftests/powerpc: Check all FPRs in fpu_preempt")
Reported-by: Spoorthy <spoorthy@linux.ibm.com>
Depends-on: 2ba107f6795d ("selftests/powerpc: Generate better bit patterns for FPU tests")
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://msgid.link/20240301101035.1230024-1-mpe@ellerman.id.au
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git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Pull networking fixes from Jakub Kicinski:
"Including fixes from bluetooth, WiFi and netfilter.
We have one outstanding issue with the stmmac driver, which may be a
LOCKDEP false positive, not a blocker.
Current release - regressions:
- netfilter: nf_tables: re-allow NFPROTO_INET in
nft_(match/target)_validate()
- eth: ionic: fix error handling in PCI reset code
Current release - new code bugs:
- eth: stmmac: complete meta data only when enabled, fix null-deref
- kunit: fix again checksum tests on big endian CPUs
Previous releases - regressions:
- veth: try harder when allocating queue memory
- Bluetooth:
- hci_bcm4377: do not mark valid bd_addr as invalid
- hci_event: fix handling of HCI_EV_IO_CAPA_REQUEST
Previous releases - always broken:
- info leak in __skb_datagram_iter() on netlink socket
- mptcp:
- map v4 address to v6 when destroying subflow
- fix potential wake-up event loss due to sndbuf auto-tuning
- fix double-free on socket dismantle
- wifi: nl80211: reject iftype change with mesh ID change
- fix small out-of-bound read when validating netlink be16/32 types
- rtnetlink: fix error logic of IFLA_BRIDGE_FLAGS writing back
- ipv6: fix potential "struct net" ref-leak in inet6_rtm_getaddr()
- ip_tunnel: prevent perpetual headroom growth with huge number of
tunnels on top of each other
- mctp: fix skb leaks on error paths of mctp_local_output()
- eth: ice: fixes for DPLL state reporting
- dpll: rely on rcu for netdev_dpll_pin() to prevent UaF
- eth: dpaa: accept phy-interface-type = '10gbase-r' in the device
tree"
* tag 'net-6.8-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (73 commits)
dpll: fix build failure due to rcu_dereference_check() on unknown type
kunit: Fix again checksum tests on big endian CPUs
tls: fix use-after-free on failed backlog decryption
tls: separate no-async decryption request handling from async
tls: fix peeking with sync+async decryption
tls: decrement decrypt_pending if no async completion will be called
gtp: fix use-after-free and null-ptr-deref in gtp_newlink()
net: hsr: Use correct offset for HSR TLV values in supervisory HSR frames
igb: extend PTP timestamp adjustments to i211
rtnetlink: fix error logic of IFLA_BRIDGE_FLAGS writing back
tools: ynl: fix handling of multiple mcast groups
selftests: netfilter: add bridge conntrack + multicast test case
netfilter: bridge: confirm multicast packets before passing them up the stack
netfilter: nf_tables: allow NFPROTO_INET in nft_(match/target)_validate()
Bluetooth: qca: Fix triggering coredump implementation
Bluetooth: hci_qca: Set BDA quirk bit if fwnode exists in DT
Bluetooth: qca: Fix wrong event type for patch config command
Bluetooth: Enforce validation on max value of connection interval
Bluetooth: hci_event: Fix handling of HCI_EV_IO_CAPA_REQUEST
Bluetooth: mgmt: Fix limited discoverable off timeout
...
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git://git.kernel.org/pub/scm/linux/kernel/git/netfilter/nf
Pablo Neira Ayuso says:
====================
Netfilter fixes for net
Patch #1 restores NFPROTO_INET with nft_compat, from Ignat Korchagin.
Patch #2 fixes an issue with bridge netfilter and broadcast/multicast
packets.
There is a day 0 bug in br_netfilter when used with connection tracking.
Conntrack assumes that an nf_conn structure that is not yet added to
hash table ("unconfirmed"), is only visible by the current cpu that is
processing the sk_buff.
For bridge this isn't true, sk_buff can get cloned in between, and
clones can be processed in parallel on different cpu.
This patch disables NAT and conntrack helpers for multicast packets.
Patch #3 adds a selftest to cover for the br_netfilter bug.
netfilter pull request 24-02-29
* tag 'nf-24-02-29' of git://git.kernel.org/pub/scm/linux/kernel/git/netfilter/nf:
selftests: netfilter: add bridge conntrack + multicast test case
netfilter: bridge: confirm multicast packets before passing them up the stack
netfilter: nf_tables: allow NFPROTO_INET in nft_(match/target)_validate()
====================
Link: https://lore.kernel.org/r/20240229000135.8780-1-pablo@netfilter.org
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
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Add test case for multicast packet confirm race.
Without preceding patch, this should result in:
WARNING: CPU: 0 PID: 38 at net/netfilter/nf_conntrack_core.c:1198 __nf_conntrack_confirm+0x3ed/0x5f0
Workqueue: events_unbound macvlan_process_broadcast
RIP: 0010:__nf_conntrack_confirm+0x3ed/0x5f0
? __nf_conntrack_confirm+0x3ed/0x5f0
nf_confirm+0x2ad/0x2d0
nf_hook_slow+0x36/0xd0
ip_local_deliver+0xce/0x110
__netif_receive_skb_one_core+0x4f/0x70
process_backlog+0x8c/0x130
[..]
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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We never increment the group number iterator, so all groups
get recorded into index 0 of the mcast_groups[] array.
As a result YNL can only handle using the last group.
For example using the "netdev" sample on kernel with
page pool commands results in:
$ ./samples/netdev
YNL: Multicast group 'mgmt' not found
Most families have only one multicast group, so this hasn't
been noticed. Plus perhaps developers usually test the last
group which would have worked.
Fixes: 86878f14d71a ("tools: ynl: user space helpers")
Reviewed-by: Donald Hunter <donald.hunter@gmail.com>
Acked-by: Nicolas Dichtel <nicolas.dichtel@6wind.com>
Link: https://lore.kernel.org/r/20240226214019.1255242-1-kuba@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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The mptcp diag interface already experienced a few locking bugs
that lockdep and appropriate coverage have detected in advance.
Let's add a test-case triggering the relevant code path, to prevent
similar issues in the future.
Be careful to cope with very slow environments.
Note that we don't need an explicit timeout on the mptcp_connect
subprocess to cope with eventual bug/hang-up as the final cleanup
terminating the child processes will take care of that.
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Reviewed-by: Matthieu Baerts (NGI0) <matttbe@kernel.org>
Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org>
Reviewed-by: Simon Horman <horms@kernel.org>
Link: https://lore.kernel.org/r/20240223-upstream-net-20240223-misc-fixes-v1-10-162e87e48497@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Commands 'ss -M' are used in script mptcp_join.sh to display only MPTCP
sockets. So it must be checked if ss tool supports MPTCP in this script.
Fixes: e274f7154008 ("selftests: mptcp: add subflow limits test-cases")
Cc: stable@vger.kernel.org
Signed-off-by: Geliang Tang <tanggeliang@kylinos.cn>
Reviewed-by: Matthieu Baerts (NGI0) <matttbe@kernel.org>
Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org>
Link: https://lore.kernel.org/r/20240223-upstream-net-20240223-misc-fixes-v1-7-162e87e48497@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Now both a v4 address and a v4-mapped address are supported when
destroying a userspace pm subflow, this patch adds a second subflow
to "userspace pm add & remove address" test, and two subflows could
be removed two different ways, one with the v4mapped and one with v4.
Closes: https://github.com/multipath-tcp/mptcp_net-next/issues/387
Fixes: 48d73f609dcc ("selftests: mptcp: update userspace pm addr tests")
Cc: stable@vger.kernel.org
Signed-off-by: Geliang Tang <tanggeliang@kylinos.cn>
Reviewed-by: Mat Martineau <martineau@kernel.org>
Reviewed-by: Matthieu Baerts (NGI0) <matttbe@kernel.org>
Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org>
Link: https://lore.kernel.org/r/20240223-upstream-net-20240223-misc-fixes-v1-2-162e87e48497@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Test that we keep GRO flag in sync when XDP is disabled while
the device is closed.
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Reviewed-by: Toke Høiland-Jørgensen <toke@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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git://git.kernel.org/pub/scm/linux/kernel/git/cxl/cxl
Pull cxl fixes from Dan Williams:
"A collection of significant fixes for the CXL subsystem.
The largest change in this set, that bordered on "new development", is
the fix for the fact that the location of the new qos_class attribute
did not match the Documentation. The fix ends up deleting more code
than it added, and it has a new unit test to backstop basic errors in
this interface going forward. So the "red-diff" and unit test saved
the "rip it out and try again" response.
In contrast, the new notification path for firmware reported CXL
errors (CXL CPER notifications) has a locking context bug that can not
be fixed with a red-diff. Given where the release cycle stands, it is
not comfortable to squeeze in that fix in these waning days. So, that
receives the "back it out and try again later" treatment.
There is a regression fix in the code that establishes memory NUMA
nodes for platform CXL regions. That has an ack from x86 folks. There
are a couple more fixups for Linux to understand (reassemble) CXL
regions instantiated by platform firmware. The policy around platforms
that do not match host-physical-address with system-physical-address
(i.e. systems that have an address translation mechanism between the
address range reported in the ACPI CEDT.CFMWS and endpoint decoders)
has been softened to abort driver load rather than teardown the memory
range (can cause system hangs). Lastly, there is a robustness /
regression fix for cases where the driver would previously continue in
the face of error, and a fixup for PCI error notification handling.
Summary:
- Fix NUMA initialization from ACPI CEDT.CFMWS
- Fix region assembly failures due to async init order
- Fix / simplify export of qos_class information
- Fix cxl_acpi initialization vs single-window-init failures
- Fix handling of repeated 'pci_channel_io_frozen' notifications
- Workaround platforms that violate host-physical-address ==
system-physical address assumptions
- Defer CXL CPER notification handling to v6.9"
* tag 'cxl-fixes-6.8-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/cxl/cxl:
cxl/acpi: Fix load failures due to single window creation failure
acpi/ghes: Remove CXL CPER notifications
cxl/pci: Fix disabling memory if DVSEC CXL Range does not match a CFMWS window
cxl/test: Add support for qos_class checking
cxl: Fix sysfs export of qos_class for memdev
cxl: Remove unnecessary type cast in cxl_qos_class_verify()
cxl: Change 'struct cxl_memdev_state' *_perf_list to single 'struct cxl_dpa_perf'
cxl/region: Allow out of order assembly of autodiscovered regions
cxl/region: Handle endpoint decoders in cxl_region_find_decoder()
x86/numa: Fix the sort compare func used in numa_fill_memblks()
x86/numa: Fix the address overlap check in numa_fill_memblks()
cxl/pci: Skip to handle RAS errors if CXL.mem device is detached
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Pick up CXL CPER notification removal for v6.8-rc6, to return in a later
merge window.
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Set a fake qos_class to a unique value in order to do simple testing of
qos_class for root decoders and mem devs via user cxl_test. A mock
function is added to set the fake qos_class values for memory device
and overrides cxl_endpoint_parse_cdat() in cxl driver code.
Signed-off-by: Dave Jiang <dave.jiang@intel.com>
Link: https://lore.kernel.org/r/20240206190431.1810289-5-dave.jiang@intel.com
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
Pull misc fixes from Andrew Morton:
"A batch of MM (and one non-MM) hotfixes.
Ten are cc:stable and the remainder address post-6.7 issues or aren't
considered appropriate for backporting"
* tag 'mm-hotfixes-stable-2024-02-22-15-02' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm:
kasan: guard release_free_meta() shadow access with kasan_arch_is_ready()
mm/damon/lru_sort: fix quota status loss due to online tunings
mm/damon/reclaim: fix quota stauts loss due to online tunings
MAINTAINERS: mailmap: update Shakeel's email address
mm/damon/sysfs-schemes: handle schemes sysfs dir removal before commit_schemes_quota_goals
mm: memcontrol: clarify swapaccount=0 deprecation warning
mm/memblock: add MEMBLOCK_RSRV_NOINIT into flagname[] array
mm/zswap: invalidate duplicate entry when !zswap_enabled
lib/Kconfig.debug: TEST_IOV_ITER depends on MMU
mm/swap: fix race when skipping swapcache
mm/swap_state: update zswap LRU's protection range with the folio locked
selftests/mm: uffd-unit-test check if huge page size is 0
mm/damon/core: check apply interval in damon_do_apply_schemes()
mm: zswap: fix missing folio cleanup in writeback race path
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If HUGETLBFS is not enabled then the default_huge_page_size function will
return 0 and cause a divide by 0 error. Add a check to see if the huge page
size is 0 and skip the hugetlb tests if it is.
Link: https://lkml.kernel.org/r/20240205145055.3545806-2-terry.tritton@linaro.org
Fixes: 16a45b57cbf2 ("selftests/mm: add framework for uffd-unit-test")
Signed-off-by: Terry Tritton <terry.tritton@linaro.org>
Cc: Peter Griffin <peter.griffin@linaro.org>
Cc: Shuah Khan <shuah@kernel.org>
Cc: Peter Xu <peterx@redhat.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/jgg/iommufd
Pull iommufd fixes from Jason Gunthorpe:
- Fix dirty tracking bitmap collection when using reporting bitmaps
that are not neatly aligned to u64's or match the IO page table radix
tree layout.
- Add self tests to cover the cases that were found to be broken.
- Add missing enforcement of invalidation type in the uapi.
- Fix selftest config generation
* tag 'for-linus-iommufd' of git://git.kernel.org/pub/scm/linux/kernel/git/jgg/iommufd:
selftests/iommu: fix the config fragment
iommufd: Reject non-zero data_type if no data_len is provided
iommufd/iova_bitmap: Consider page offset for the pages to be pinned
iommufd/selftest: Add mock IO hugepages tests
iommufd/selftest: Hugepage mock domain support
iommufd/selftest: Refactor mock_domain_read_and_clear_dirty()
iommufd/selftest: Refactor dirty bitmap tests
iommufd/iova_bitmap: Handle recording beyond the mapped pages
iommufd/selftest: Test u64 unaligned bitmaps
iommufd/iova_bitmap: Switch iova_bitmap::bitmap to an u8 array
iommufd/iova_bitmap: Bounds check mapped::pages access
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The config fragment doesn't follow the correct format to enable those
config options which make the config options getting missed while
merging with other configs.
➜ merge_config.sh -m .config tools/testing/selftests/iommu/config
Using .config as base
Merging tools/testing/selftests/iommu/config
➜ make olddefconfig
.config:5295:warning: unexpected data: CONFIG_IOMMUFD
.config:5296:warning: unexpected data: CONFIG_IOMMUFD_TEST
While at it, add CONFIG_FAULT_INJECTION as well which is needed for
CONFIG_IOMMUFD_TEST. If CONFIG_FAULT_INJECTION isn't present in base
config (such as x86 defconfig), CONFIG_IOMMUFD_TEST doesn't get enabled.
Fixes: 57f0988706fe ("iommufd: Add a selftest")
Link: https://lore.kernel.org/r/20240222074934.71380-1-usama.anjum@collabora.com
Signed-off-by: Muhammad Usama Anjum <usama.anjum@collabora.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
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Leverage previously added MOCK_FLAGS_DEVICE_HUGE_IOVA flag to create an
IOMMU domain with more than MOCK_IO_PAGE_SIZE supported.
Plumb the hugetlb backing memory for buffer allocation and change the
expected page size to MOCK_HUGE_PAGE_SIZE (1M) when hugepage variant test
cases are used. These so far are limited to 128M and 256M IOVA range tests
cases which is when 1M hugepages can be used.
Link: https://lore.kernel.org/r/20240202133415.23819-9-joao.m.martins@oracle.com
Signed-off-by: Joao Martins <joao.m.martins@oracle.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
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Rework the functions that test and set the bitmaps to receive a new
parameter (the pte_page_size) that reflects the expected PTE size in the
page tables. The same scheme is still used i.e. even bits are dirty and
odd page indexes aren't dirty. Here it just refactors to consider the size
of the PTE rather than hardcoded to IOMMU mock base page assumptions.
While at it, refactor dirty bitmap tests to use the idev_id created by the
fixture instead of creating a new one.
This is in preparation for doing tests with IOMMU hugepages where multiple
bits set as part of recording a whole hugepage as dirty and thus the
pte_page_size will vary depending on io hugepages or io base pages.
Link: https://lore.kernel.org/r/20240202133415.23819-6-joao.m.martins@oracle.com
Signed-off-by: Joao Martins <joao.m.martins@oracle.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
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Exercise the dirty tracking bitmaps with byte unaligned addresses in
addition to the PAGE_SIZE unaligned bitmaps, using a address towards the
end of the page boundary.
In doing so, increase the tailroom we allocate for the bitmap from
MOCK_PAGE_SIZE(2K) into PAGE_SIZE(4K), such that we can test end of bitmap
boundary.
Link: https://lore.kernel.org/r/20240202133415.23819-4-joao.m.martins@oracle.com
Signed-off-by: Joao Martins <joao.m.martins@oracle.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Pull networking fixes from Paolo Abeni:
"Including fixes from bpf and netfilter.
Current release - regressions:
- af_unix: fix another unix GC hangup
Previous releases - regressions:
- core: fix a possible AF_UNIX deadlock
- bpf: fix NULL pointer dereference in sk_psock_verdict_data_ready()
- netfilter: nft_flow_offload: release dst in case direct xmit path
is used
- bridge: switchdev: ensure MDB events are delivered exactly once
- l2tp: pass correct message length to ip6_append_data
- dccp/tcp: unhash sk from ehash for tb2 alloc failure after
check_estalblished()
- tls: fixes for record type handling with PEEK
- devlink: fix possible use-after-free and memory leaks in
devlink_init()
Previous releases - always broken:
- bpf: fix an oops when attempting to read the vsyscall page through
bpf_probe_read_kernel
- sched: act_mirred: use the backlog for mirred ingress
- netfilter: nft_flow_offload: fix dst refcount underflow
- ipv6: sr: fix possible use-after-free and null-ptr-deref
- mptcp: fix several data races
- phonet: take correct lock to peek at the RX queue
Misc:
- handful of fixes and reliability improvements for selftests"
* tag 'net-6.8.0-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (72 commits)
l2tp: pass correct message length to ip6_append_data
net: phy: realtek: Fix rtl8211f_config_init() for RTL8211F(D)(I)-VD-CG PHY
selftests: ioam: refactoring to align with the fix
Fix write to cloned skb in ipv6_hop_ioam()
phonet/pep: fix racy skb_queue_empty() use
phonet: take correct lock to peek at the RX queue
net: sparx5: Add spinlock for frame transmission from CPU
net/sched: flower: Add lock protection when remove filter handle
devlink: fix port dump cmd type
net: stmmac: Fix EST offset for dwmac 5.10
tools: ynl: don't leak mcast_groups on init error
tools: ynl: make sure we always pass yarg to mnl_cb_run
net: mctp: put sock on tag allocation failure
netfilter: nf_tables: use kzalloc for hook allocation
netfilter: nf_tables: register hooks last when adding new chain/flowtable
netfilter: nft_flow_offload: release dst in case direct xmit path is used
netfilter: nft_flow_offload: reset dst in route object after setting up flow
netfilter: nf_tables: set dormant flag on hook register failure
selftests: tls: add test for peeking past a record of a different type
selftests: tls: add test for merging of same-type control messages
...
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https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf
Daniel Borkmann says:
====================
pull-request: bpf 2024-02-22
The following pull-request contains BPF updates for your *net* tree.
We've added 11 non-merge commits during the last 24 day(s) which contain
a total of 15 files changed, 217 insertions(+), 17 deletions(-).
The main changes are:
1) Fix a syzkaller-triggered oops when attempting to read the vsyscall
page through bpf_probe_read_kernel and friends, from Hou Tao.
2) Fix a kernel panic due to uninitialized iter position pointer in
bpf_iter_task, from Yafang Shao.
3) Fix a race between bpf_timer_cancel_and_free and bpf_timer_cancel,
from Martin KaFai Lau.
4) Fix a xsk warning in skb_add_rx_frag() (under CONFIG_DEBUG_NET)
due to incorrect truesize accounting, from Sebastian Andrzej Siewior.
5) Fix a NULL pointer dereference in sk_psock_verdict_data_ready,
from Shigeru Yoshida.
6) Fix a resolve_btfids warning when bpf_cpumask symbol cannot be
resolved, from Hari Bathini.
bpf-for-netdev
* tag 'for-netdev' of https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf:
bpf, sockmap: Fix NULL pointer dereference in sk_psock_verdict_data_ready()
selftests/bpf: Add negtive test cases for task iter
bpf: Fix an issue due to uninitialized bpf_iter_task
selftests/bpf: Test racing between bpf_timer_cancel_and_free and bpf_timer_cancel
bpf: Fix racing between bpf_timer_cancel_and_free and bpf_timer_cancel
selftest/bpf: Test the read of vsyscall page under x86-64
x86/mm: Disallow vsyscall page read for copy_from_kernel_nofault()
x86/mm: Move is_vsyscall_vaddr() into asm/vsyscall.h
bpf, scripts: Correct GPL license name
xsk: Add truesize to skb_add_rx_frag().
bpf: Fix warning for bpf_cpumask in verifier
====================
Link: https://lore.kernel.org/r/20240221231826.1404-1-daniel@iogearbox.net
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
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Incorporate a test case to assess the handling of invalid flags or
task__nullable parameters passed to bpf_iter_task_new(). Prior to the
preceding commit, this scenario could potentially trigger a kernel panic.
However, with the previous commit, this test case is expected to function
correctly.
Signed-off-by: Yafang Shao <laoar.shao@gmail.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Link: https://lore.kernel.org/bpf/20240217114152.1623-3-laoar.shao@gmail.com
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bpf_timer_cancel
This selftest is based on a Alexei's test adopted from an internal
user to troubleshoot another bug. During this exercise, a separate
racing bug was discovered between bpf_timer_cancel_and_free
and bpf_timer_cancel. The details can be found in the previous
patch.
This patch is to add a selftest that can trigger the bug.
I can trigger the UAF everytime in my qemu setup with KASAN. The idea
is to have multiple user space threads running in a tight loop to exercise
both bpf_map_update_elem (which calls into bpf_timer_cancel_and_free)
and bpf_timer_cancel.
Signed-off-by: Martin KaFai Lau <martin.lau@kernel.org>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Hou Tao <houtao1@huawei.com>
Link: https://lore.kernel.org/bpf/20240215211218.990808-2-martin.lau@linux.dev
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Under x86-64, when using bpf_probe_read_kernel{_str}() or
bpf_probe_read{_str}() to read vsyscall page, the read may trigger oops,
so add one test case to ensure that the problem is fixed. Beside those
four bpf helpers mentioned above, testing the read of vsyscall page by
using bpf_probe_read_user{_str} and bpf_copy_from_user{_task}() as well.
The test case passes the address of vsyscall page to these six helpers
and checks whether the returned values are expected:
1) For bpf_probe_read_kernel{_str}()/bpf_probe_read{_str}(), the
expected return value is -ERANGE as shown below:
bpf_probe_read_kernel_common
copy_from_kernel_nofault
// false, return -ERANGE
copy_from_kernel_nofault_allowed
2) For bpf_probe_read_user{_str}(), the expected return value is -EFAULT
as show below:
bpf_probe_read_user_common
copy_from_user_nofault
// false, return -EFAULT
__access_ok
3) For bpf_copy_from_user(), the expected return value is -EFAULT:
// return -EFAULT
bpf_copy_from_user
copy_from_user
_copy_from_user
// return false
access_ok
4) For bpf_copy_from_user_task(), the expected return value is -EFAULT:
// return -EFAULT
bpf_copy_from_user_task
access_process_vm
// return 0
vma_lookup()
// return 0
expand_stack()
The occurrence of oops depends on the availability of CPU SMAP [1]
feature and there are three possible configurations of vsyscall page in
the boot cmd-line: vsyscall={xonly|none|emulate}, so there are a total
of six possible combinations. Under all these combinations, the test
case runs successfully.
[1]: https://en.wikipedia.org/wiki/Supervisor_Mode_Access_Prevention
Acked-by: Yonghong Song <yonghong.song@linux.dev>
Signed-off-by: Hou Tao <houtao1@huawei.com>
Link: https://lore.kernel.org/r/20240202103935.3154011-4-houtao@huaweicloud.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
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ioam6_parser uses a packet socket. After the fix to prevent writing to
cloned skb's, the receiver does not see its IOAM data anymore, which
makes input/forward ioam-selftests to fail. As a workaround,
ioam6_parser now uses an IPv6 raw socket and leverages ancillary data to
get hop-by-hop options. As a consequence, the hook is "after" the IOAM
data insertion by the receiver and all tests are working again.
Signed-off-by: Justin Iurman <justin.iurman@uliege.be>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
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Make sure to free the already-parsed mcast_groups if
we don't get an ack from the kernel when reading family info.
This is part of the ynl_sock_create() error path, so we won't
get a call to ynl_sock_destroy() to free them later.
Fixes: 86878f14d71a ("tools: ynl: user space helpers")
Acked-by: Nicolas Dichtel <nicolas.dichtel@6wind.com>
Link: https://lore.kernel.org/r/20240220161112.2735195-3-kuba@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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There is one common error handler in ynl - ynl_cb_error().
It expects priv to be a pointer to struct ynl_parse_arg AKA yarg.
To avoid potential crashes if we encounter a stray NLMSG_ERROR
always pass yarg as priv (or a struct which has it as the first
member).
ynl_cb_null() has a similar problem directly - it expects yarg
but priv passed by the caller is ys.
Found by code inspection.
Fixes: 86878f14d71a ("tools: ynl: user space helpers")
Acked-by: Nicolas Dichtel <nicolas.dichtel@6wind.com>
Link: https://lore.kernel.org/r/20240220161112.2735195-2-kuba@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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If we queue 3 records:
- record 1, type DATA
- record 2, some other type
- record 3, type DATA
the current code can look past the 2nd record and merge the 2 data
records.
Signed-off-by: Sabrina Dubroca <sd@queasysnail.net>
Link: https://lore.kernel.org/r/4623550f8617c239581030c13402d3262f2bd14f.1708007371.git.sd@queasysnail.net
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Two consecutive control messages of the same type should never be
merged into one large received blob of data.
Signed-off-by: Sabrina Dubroca <sd@queasysnail.net>
Link: https://lore.kernel.org/r/018f1633d5471684c65def5fe390de3b15c3d683.1708007371.git.sd@queasysnail.net
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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In bond priority testing, we set the primary interface to eth1 and add
eth0,1,2 to bond in serial. This is OK in normal times. But when in
debug kernel, the bridge port that eth0,1,2 connected would start
slowly (enter blocking, forwarding state), which caused the primary
interface down for a while after enslaving and active slave changed.
Here is a test log from Jakub's debug test[1].
[ 400.399070][ T50] br0: port 1(s0) entered disabled state
[ 400.400168][ T50] br0: port 4(s2) entered disabled state
[ 400.941504][ T2791] bond0: (slave eth0): making interface the new active one
[ 400.942603][ T2791] bond0: (slave eth0): Enslaving as an active interface with an up link
[ 400.943633][ T2766] br0: port 1(s0) entered blocking state
[ 400.944119][ T2766] br0: port 1(s0) entered forwarding state
[ 401.128792][ T2792] bond0: (slave eth1): making interface the new active one
[ 401.130771][ T2792] bond0: (slave eth1): Enslaving as an active interface with an up link
[ 401.131643][ T69] br0: port 2(s1) entered blocking state
[ 401.132067][ T69] br0: port 2(s1) entered forwarding state
[ 401.346201][ T2793] bond0: (slave eth2): Enslaving as a backup interface with an up link
[ 401.348414][ T50] br0: port 4(s2) entered blocking state
[ 401.348857][ T50] br0: port 4(s2) entered forwarding state
[ 401.519669][ T250] bond0: (slave eth0): link status definitely down, disabling slave
[ 401.526522][ T250] bond0: (slave eth1): link status definitely down, disabling slave
[ 401.526986][ T250] bond0: (slave eth2): making interface the new active one
[ 401.629470][ T250] bond0: (slave eth0): link status definitely up
[ 401.630089][ T250] bond0: (slave eth1): link status definitely up
[...]
# TEST: prio (active-backup ns_ip6_target primary_reselect 1) [FAIL]
# Current active slave is eth2 but not eth1
Fix it by setting active slave to primary slave specifically before
testing.
[1] https://netdev-3.bots.linux.dev/vmksft-bonding-dbg/results/464301/1-bond-options-sh/stdout
Fixes: 481b56e0391e ("selftests: bonding: re-format bond option tests")
Signed-off-by: Hangbin Liu <liuhangbin@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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It is important to have a unique (sub)test name in TAP, because some CI
environments drop tests with duplicated name.
Some 'cestab' subtests from the diag selftest had the same names, e.g.:
....chk 0 cestab
Now the previous value is taken, to have different names, e.g.:
....chk 2->0 cestab after flush
While at it, the 'after flush' info is added, similar to what is done
with the 'in use' subtests. Also inspired by these 'in use' subtests,
'many' is displayed instead of a large number:
many msk socket present [ ok ]
....chk many msk in use [ ok ]
....chk many cestab [ ok ]
....chk many->0 msk in use after flush [ ok ]
....chk many->0 cestab after flush [ ok ]
Fixes: 81ab772819da ("selftests: mptcp: diag: check CURRESTAB counters")
Cc: stable@vger.kernel.org
Reviewed-by: Geliang Tang <geliang@kernel.org>
Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
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It is important to have a unique (sub)test name in TAP, because some CI
environments drop tests with duplicated name.
Some 'in use' subtests from the diag selftest had the same names, e.g.:
chk 0 msk in use after flush
Now the previous value is taken, to have different names, e.g.:
chk 2->0 msk in use after flush
While at it, avoid repeating the full message, declare it once in the
helper.
Fixes: ce9902573652 ("selftests: mptcp: diag: format subtests results in TAP")
Cc: stable@vger.kernel.org
Reviewed-by: Geliang Tang <geliang@kernel.org>
Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
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It is important to have a unique (sub)test name in TAP, because some CI
environments drop tests with duplicated names.
Some subtests from the userspace_pm selftest had the same names. That's
because different subflows are created (and deleted) between the same
pair of IP addresses.
Simply adding the destination port in the name is then enough to have
different names, because the destination port is always different.
Note that adding such info takes a bit more space, so we need to
increase a bit the width to print the name, simply to keep all the
'[ OK ]' aligned as before.
Fixes: f589234e1af0 ("selftests: mptcp: userspace_pm: format subtests results in TAP")
Cc: stable@vger.kernel.org
Reviewed-by: Geliang Tang <geliang@kernel.org>
Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
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The selftest was correctly recording all the results, but the 'reverse
direction' part was missing in the name when needed.
It is important to have a unique (sub)test name in TAP, because some CI
environments drop tests with duplicated name.
Fixes: 675d99338e7a ("selftests: mptcp: simult flows: format subtests results in TAP")
Cc: stable@vger.kernel.org
Reviewed-by: Geliang Tang <geliang@kernel.org>
Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Since the 'Fixes' commit mentioned below, the command that is executed
in __chk_nr() helper can return nothing if the feature is not supported.
This is the case when the MPTCP CURRESTAB counter is not supported.
To avoid this warning ...
./diag.sh: line 65: [: !=: unary operator expected
... we just need to surround '$nr' with double quotes, to support an
empty string when the feature is not supported.
Fixes: 81ab772819da ("selftests: mptcp: diag: check CURRESTAB counters")
Cc: stable@vger.kernel.org
Reviewed-by: Geliang Tang <geliang@kernel.org>
Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Since the 'Fixes' commit mentioned below, and if the kernel being tested
doesn't support the 'fullmesh' flag, this error will be printed:
netlink error -22 (Invalid argument)
./pm_nl_ctl: bailing out due to netlink error[s]
But that can be normal if the kernel doesn't support the feature, no
need to print this worrying error message while everything else looks
OK. So we can mute stderr. Failures will still be detected if any.
Fixes: 1dc88d241f92 ("selftests: mptcp: pm_nl_ctl: always look for errors")
Cc: stable@vger.kernel.org
Reviewed-by: Geliang Tang <geliang@kernel.org>
Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
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If the feature is not supported by older kernels, and instead of just
ignoring some tests, we should mark them as skipped, so we can still
track them.
Fixes: d85555ac11f9 ("selftests: mptcp: pm_netlink: format subtests results in TAP")
Cc: stable@vger.kernel.org
Reviewed-by: Geliang Tang <geliang@kernel.org>
Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
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The test Davide added in commit ca22da2fbd69 ("act_mirred: use the backlog
for nested calls to mirred ingress") hangs our testing VMs every 10 or so
runs, with the familiar tcp_v4_rcv -> tcp_v4_rcv deadlock reported by
lockdep.
The problem as previously described by Davide (see Link) is that
if we reverse flow of traffic with the redirect (egress -> ingress)
we may reach the same socket which generated the packet. And we may
still be holding its socket lock. The common solution to such deadlocks
is to put the packet in the Rx backlog, rather than run the Rx path
inline. Do that for all egress -> ingress reversals, not just once
we started to nest mirred calls.
In the past there was a concern that the backlog indirection will
lead to loss of error reporting / less accurate stats. But the current
workaround does not seem to address the issue.
Fixes: 53592b364001 ("net/sched: act_mirred: Implement ingress actions")
Cc: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
Suggested-by: Davide Caratti <dcaratti@redhat.com>
Link: https://lore.kernel.org/netdev/33dc43f587ec1388ba456b4915c75f02a8aae226.1663945716.git.dcaratti@redhat.com/
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Acked-by: Jamal Hadi Salim <jhs@mojatatu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux
Pull powerpc fixes from Michael Ellerman:
"This is a bit of a big batch for rc4, but just due to holiday hangover
and because I didn't send any fixes last week due to a late revert
request. I think next week should be back to normal.
- Fix ftrace bug on boot caused by exit text sections with
'-fpatchable-function-entry'
- Fix accuracy of stolen time on pseries since the switch to
VIRT_CPU_ACCOUNTING_GEN
- Fix a crash in the IOMMU code when doing DLPAR remove
- Set pt_regs->link on scv entry to fix BPF stack unwinding
- Add missing PPC_FEATURE_BOOKE on 64-bit e5500/e6500, which broke
gdb
- Fix boot on some 6xx platforms with STRICT_KERNEL_RWX enabled
- Fix build failures with KASAN enabled and 32KB stack size
- Some other minor fixes
Thanks to Arnd Bergmann, Benjamin Gray, Christophe Leroy, David
Engraf, Gaurav Batra, Jason Gunthorpe, Jiangfeng Xiao, Matthias
Schiffer, Nathan Lynch, Naveen N Rao, Nicholas Piggin, Nysal Jan K.A,
R Nageswara Sastry, Shivaprasad G Bhat, Shrikanth Hegde, Spoorthy,
Srikar Dronamraju, and Venkat Rao Bagalkote"
* tag 'powerpc-6.8-3' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux:
powerpc/iommu: Fix the missing iommu_group_put() during platform domain attach
powerpc/pseries: fix accuracy of stolen time
powerpc/ftrace: Ignore ftrace locations in exit text sections
powerpc/cputable: Add missing PPC_FEATURE_BOOKE on PPC64 Book-E
powerpc/kasan: Limit KASAN thread size increase to 32KB
Revert "powerpc/pseries/iommu: Fix iommu initialisation during DLPAR add"
powerpc: 85xx: mark local functions static
powerpc: udbg_memcons: mark functions static
powerpc/kasan: Fix addr error caused by page alignment
powerpc/6xx: set High BAT Enable flag on G2_LE cores
selftests/powerpc/papr_vpd: Check devfd before get_system_loc_code()
powerpc/64: Set task pt_regs->link to the LR value on scv entry
powerpc/pseries/iommu: Fix iommu initialisation during DLPAR add
powerpc/pseries/papr-sysparm: use u8 arrays for payloads
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Calling get_system_loc_code before checking devfd and errno fails the test
when the device is not available, the expected behaviour is a SKIP.
Change the order of 'SKIP_IF_MSG' to correctly SKIP when the /dev/
papr-vpd device is not available.
Test output before:
Test FAILED on line 271
Test output after:
[SKIP] Test skipped on line 266: /dev/papr-vpd not present
Signed-off-by: R Nageswara Sastry <rnsastry@linux.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://msgid.link/20240131130859.14968-1-rnsastry@linux.ibm.com
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Pull KVM fixes from Paolo Bonzini:
"ARM:
- Avoid dropping the page refcount twice when freeing an unlinked
page-table subtree.
- Don't source the VFIO Kconfig twice
- Fix protected-mode locking order between kvm and vcpus
RISC-V:
- Fix steal-time related sparse warnings
x86:
- Cleanup gtod_is_based_on_tsc() to return "bool" instead of an "int"
- Make a KVM_REQ_NMI request while handling KVM_SET_VCPU_EVENTS if
and only if the incoming events->nmi.pending is non-zero. If the
target vCPU is in the UNITIALIZED state, the spurious request will
result in KVM exiting to userspace, which in turn causes QEMU to
constantly acquire and release QEMU's global mutex, to the point
where the BSP is unable to make forward progress.
- Fix a type (u8 versus u64) goof that results in pmu->fixed_ctr_ctrl
being incorrectly truncated, and ultimately causes KVM to think a
fixed counter has already been disabled (KVM thinks the old value
is '0').
- Fix a stack leak in KVM_GET_MSRS where a failed MSR read from
userspace that is ultimately ignored due to ignore_msrs=true
doesn't zero the output as intended.
Selftests cleanups and fixes:
- Remove redundant newlines from error messages.
- Delete an unused variable in the AMX test (which causes build
failures when compiling with -Werror).
- Fail instead of skipping tests if open(), e.g. of /dev/kvm, fails
with an error code other than ENOENT (a Hyper-V selftest bug
resulted in an EMFILE, and the test eventually got skipped).
- Fix TSC related bugs in several Hyper-V selftests.
- Fix a bug in the dirty ring logging test where a sem_post() could
be left pending across multiple runs, resulting in incorrect
synchronization between the main thread and the vCPU worker thread.
- Relax the dirty log split test's assertions on 4KiB mappings to fix
false positives due to the number of mappings for memslot 0 (used
for code and data that is NOT being dirty logged) changing, e.g.
due to NUMA balancing"
* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (25 commits)
KVM: arm64: Fix double-free following kvm_pgtable_stage2_free_unlinked()
RISC-V: KVM: Use correct restricted types
RISC-V: paravirt: Use correct restricted types
RISC-V: paravirt: steal_time should be static
KVM: selftests: Don't assert on exact number of 4KiB in dirty log split test
KVM: selftests: Fix a semaphore imbalance in the dirty ring logging test
KVM: x86: Fix KVM_GET_MSRS stack info leak
KVM: arm64: Do not source virt/lib/Kconfig twice
KVM: x86/pmu: Fix type length error when reading pmu->fixed_ctr_ctrl
KVM: x86: Make gtod_is_based_on_tsc() return 'bool'
KVM: selftests: Make hyperv_clock require TSC based system clocksource
KVM: selftests: Run clocksource dependent tests with hyperv_clocksource_tsc_page too
KVM: selftests: Use generic sys_clocksource_is_tsc() in vmx_nested_tsc_scaling_test
KVM: selftests: Generalize check_clocksource() from kvm_clock_test
KVM: x86: make KVM_REQ_NMI request iff NMI pending for vcpu
KVM: arm64: Fix circular locking dependency
KVM: selftests: Fail tests when open() fails with !ENOENT
KVM: selftests: Avoid infinite loop in hyperv_features when invtsc is missing
KVM: selftests: Delete superfluous, unused "stage" variable in AMX test
KVM: selftests: x86_64: Remove redundant newlines
...
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into HEAD
KVM selftests fixes/cleanups (and one KVM x86 cleanup) for 6.8:
- Remove redundant newlines from error messages.
- Delete an unused variable in the AMX test (which causes build failures when
compiling with -Werror).
- Fail instead of skipping tests if open(), e.g. of /dev/kvm, fails with an
error code other than ENOENT (a Hyper-V selftest bug resulted in an EMFILE,
and the test eventually got skipped).
- Fix TSC related bugs in several Hyper-V selftests.
- Fix a bug in the dirty ring logging test where a sem_post() could be left
pending across multiple runs, resulting in incorrect synchronization between
the main thread and the vCPU worker thread.
- Relax the dirty log split test's assertions on 4KiB mappings to fix false
positives due to the number of mappings for memslot 0 (used for code and
data that is NOT being dirty logged) changing, e.g. due to NUMA balancing.
- Have KVM's gtod_is_based_on_tsc() return "bool" instead of an "int" (the
function generates boolean values, and all callers treat the return value as
a bool).
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Drop dirty_log_page_splitting_test's assertion that the number of 4KiB
pages remains the same across dirty logging being enabled and disabled, as
the test doesn't guarantee that mappings outside of the memslots being
dirty logged are stable, e.g. KVM's mappings for code and pages in
memslot0 can be zapped by things like NUMA balancing.
To preserve the spirit of the check, assert that (a) the number of 4KiB
pages after splitting is _at least_ the number of 4KiB pages across all
memslots under test, and (b) the number of hugepages before splitting adds
up to the number of pages across all memslots under test. (b) is a little
tenuous as it relies on memslot0 being incompatible with transparent
hugepages, but that holds true for now as selftests explicitly madvise()
MADV_NOHUGEPAGE for memslot0 (__vm_create() unconditionally specifies the
backing type as VM_MEM_SRC_ANONYMOUS).
Reported-by: Yi Lai <yi1.lai@intel.com>
Reported-by: Tao Su <tao1.su@linux.intel.com>
Reviewed-by: Tao Su <tao1.su@linux.intel.com>
Link: https://lore.kernel.org/r/20240131222728.4100079-1-seanjc@google.com
Signed-off-by: Sean Christopherson <seanjc@google.com>
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When finishing the final iteration of dirty_log_test testcase, set
host_quit _before_ the final "continue" so that the vCPU worker doesn't
run an extra iteration, and delete the hack-a-fix of an extra "continue"
from the dirty ring testcase. This fixes a bug where the extra post to
sem_vcpu_cont may not be consumed, which results in failures in subsequent
runs of the testcases. The bug likely was missed during development as
x86 supports only a single "guest mode", i.e. there aren't any subsequent
testcases after the dirty ring test, because for_each_guest_mode() only
runs a single iteration.
For the regular dirty log testcases, letting the vCPU run one extra
iteration is a non-issue as the vCPU worker waits on sem_vcpu_cont if and
only if the worker is explicitly told to stop (vcpu_sync_stop_requested).
But for the dirty ring test, which needs to periodically stop the vCPU to
reap the dirty ring, letting the vCPU resume the guest _after_ the last
iteration means the vCPU will get stuck without an extra "continue".
However, blindly firing off an post to sem_vcpu_cont isn't guaranteed to
be consumed, e.g. if the vCPU worker sees host_quit==true before resuming
the guest. This results in a dangling sem_vcpu_cont, which leads to
subsequent iterations getting out of sync, as the vCPU worker will
continue on before the main task is ready for it to resume the guest,
leading to a variety of asserts, e.g.
==== Test Assertion Failure ====
dirty_log_test.c:384: dirty_ring_vcpu_ring_full
pid=14854 tid=14854 errno=22 - Invalid argument
1 0x00000000004033eb: dirty_ring_collect_dirty_pages at dirty_log_test.c:384
2 0x0000000000402d27: log_mode_collect_dirty_pages at dirty_log_test.c:505
3 (inlined by) run_test at dirty_log_test.c:802
4 0x0000000000403dc7: for_each_guest_mode at guest_modes.c:100
5 0x0000000000401dff: main at dirty_log_test.c:941 (discriminator 3)
6 0x0000ffff9be173c7: ?? ??:0
7 0x0000ffff9be1749f: ?? ??:0
8 0x000000000040206f: _start at ??:?
Didn't continue vcpu even without ring full
Alternatively, the test could simply reset the semaphores before each
testcase, but papering over hacks with more hacks usually ends in tears.
Reported-by: Shaoqin Huang <shahuang@redhat.com>
Fixes: 84292e565951 ("KVM: selftests: Add dirty ring buffer test")
Reviewed-by: Peter Xu <peterx@redhat.com>
Reviewed-by: Shaoqin Huang <shahuang@redhat.com>
Link: https://lore.kernel.org/r/20240202231831.354848-1-seanjc@google.com
Signed-off-by: Sean Christopherson <seanjc@google.com>
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KVM sets up Hyper-V TSC page clocksource for its guests when system
clocksource is 'based on TSC' (see gtod_is_based_on_tsc()), running
hyperv_clock with any other clocksource leads to imminent failure.
Add the missing requirement to make the test skip gracefully.
Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Link: https://lore.kernel.org/r/20240109141121.1619463-5-vkuznets@redhat.com
Signed-off-by: Sean Christopherson <seanjc@google.com>
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hyperv_clocksource_tsc_page too
KVM's 'gtod_is_based_on_tsc()' recognizes two clocksources: 'tsc' and
'hyperv_clocksource_tsc_page' and enables kvmclock in 'masterclock'
mode when either is in use. Transform 'sys_clocksource_is_tsc()' into
'sys_clocksource_is_based_on_tsc()' to support the later. This affects
two tests: kvm_clock_test and vmx_nested_tsc_scaling_test, both seem
to work well when system clocksource is 'hyperv_clocksource_tsc_page'.
Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Link: https://lore.kernel.org/r/20240109141121.1619463-4-vkuznets@redhat.com
Signed-off-by: Sean Christopherson <seanjc@google.com>
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vmx_nested_tsc_scaling_test
Despite its name, system_has_stable_tsc() just checks that system
clocksource is 'tsc'; this can now be done with generic
sys_clocksource_is_tsc().
No functional change intended.
Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Link: https://lore.kernel.org/r/20240109141121.1619463-3-vkuznets@redhat.com
Signed-off-by: Sean Christopherson <seanjc@google.com>
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Several existing x86 selftests need to check that the underlying system
clocksource is TSC or based on TSC but every test implements its own
check. As a first step towards unification, extract check_clocksource()
from kvm_clock_test and split it into two functions: arch-neutral
'sys_get_cur_clocksource()' and x86-specific 'sys_clocksource_is_tsc()'.
Fix a couple of pre-existing issues in kvm_clock_test: memory leakage in
check_clocksource() and using TEST_ASSERT() instead of TEST_REQUIRE().
The change also makes the test fail when system clocksource can't be read
from sysfs.
Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Link: https://lore.kernel.org/r/20240109141121.1619463-2-vkuznets@redhat.com
[sean: eliminate if-elif pattern just to set a bool true]
Signed-off-by: Sean Christopherson <seanjc@google.com>
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open_path_or_exit() is used for '/dev/kvm', '/dev/sev', and
'/sys/module/%s/parameters/%s' and skipping test when the entry is missing
is completely reasonable. Other errors, however, may indicate a real issue
which is easy to miss. E.g. when 'hyperv_features' test was entering an
infinite loop the output was:
./hyperv_features
Testing access to Hyper-V specific MSRs
1..0 # SKIP - /dev/kvm not available (errno: 24)
and this can easily get overlooked.
Keep ENOENT case 'special' for skipping tests and fail when open() results
in any other errno.
Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Link: https://lore.kernel.org/r/20240129085847.2674082-2-vkuznets@redhat.com
Signed-off-by: Sean Christopherson <seanjc@google.com>
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