| Age | Commit message (Collapse) | Author |
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull objtool updates from Thomas Gleixner:
- Improve retpoline code patching by separating it from alternatives
which reduces memory footprint and allows to do better optimizations
in the actual runtime patching.
- Add proper retpoline support for x86/BPF
- Address noinstr warnings in x86/kvm, lockdep and paravirtualization
code
- Add support to handle pv_opsindirect calls in the noinstr analysis
- Classify symbols upfront and cache the result to avoid redundant
str*cmp() invocations.
- Add a CFI hash to reduce memory consumption which also reduces
runtime on a allyesconfig by ~50%
- Adjust XEN code to make objtool handling more robust and as a side
effect to prevent text fragmentation due to placement of the
hypercall page.
* tag 'objtool-core-2021-10-31' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (41 commits)
bpf,x86: Respect X86_FEATURE_RETPOLINE*
bpf,x86: Simplify computing label offsets
x86,bugs: Unconditionally allow spectre_v2=retpoline,amd
x86/alternative: Add debug prints to apply_retpolines()
x86/alternative: Try inline spectre_v2=retpoline,amd
x86/alternative: Handle Jcc __x86_indirect_thunk_\reg
x86/alternative: Implement .retpoline_sites support
x86/retpoline: Create a retpoline thunk array
x86/retpoline: Move the retpoline thunk declarations to nospec-branch.h
x86/asm: Fixup odd GEN-for-each-reg.h usage
x86/asm: Fix register order
x86/retpoline: Remove unused replacement symbols
objtool,x86: Replace alternatives with .retpoline_sites
objtool: Shrink struct instruction
objtool: Explicitly avoid self modifying code in .altinstr_replacement
objtool: Classify symbols
objtool: Support pv_opsindirect calls for noinstr
x86/xen: Rework the xen_{cpu,irq,mmu}_opsarrays
x86/xen: Mark xen_force_evtchn_callback() noinstr
x86/xen: Make irq_disable() noinstr
...
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull locking updates from Thomas Gleixner:
- Move futex code into kernel/futex/ and split up the kitchen sink into
seperate files to make integration of sys_futex_waitv() simpler.
- Add a new sys_futex_waitv() syscall which allows to wait on multiple
futexes.
The main use case is emulating Windows' WaitForMultipleObjects which
allows Wine to improve the performance of Windows Games. Also native
Linux games can benefit from this interface as this is a common wait
pattern for this kind of applications.
- Add context to ww_mutex_trylock() to provide a path for i915 to
rework their eviction code step by step without making lockdep upset
until the final steps of rework are completed. It's also useful for
regulator and TTM to avoid dropping locks in the non contended path.
- Lockdep and might_sleep() cleanups and improvements
- A few improvements for the RT substitutions.
- The usual small improvements and cleanups.
* tag 'locking-core-2021-10-31' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (44 commits)
locking: Remove spin_lock_flags() etc
locking/rwsem: Fix comments about reader optimistic lock stealing conditions
locking: Remove rcu_read_{,un}lock() for preempt_{dis,en}able()
locking/rwsem: Disable preemption for spinning region
docs: futex: Fix kernel-doc references
futex: Fix PREEMPT_RT build
futex2: Documentation: Document sys_futex_waitv() uAPI
selftests: futex: Test sys_futex_waitv() wouldblock
selftests: futex: Test sys_futex_waitv() timeout
selftests: futex: Add sys_futex_waitv() test
futex,arm: Wire up sys_futex_waitv()
futex,x86: Wire up sys_futex_waitv()
futex: Implement sys_futex_waitv()
futex: Simplify double_lock_hb()
futex: Split out wait/wake
futex: Split out requeue
futex: Rename mark_wake_futex()
futex: Rename: match_futex()
futex: Rename: hb_waiter_{inc,dec,pending}()
futex: Split out PI futex
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull perf updates from Thomas Gleixner:
"Core:
- Allow ftrace to instrument parts of the perf core code
- Add a new mem_hops field to perf_mem_data_src which allows to
represent intra-node/package or inter-node/off-package details to
prepare for next generation systems which have more hieararchy
within the node/pacakge level.
Tools:
- Update for the new mem_hops field in perf_mem_data_src
Arch:
- A set of constraints fixes for the Intel uncore PMU
- The usual set of small fixes and improvements for x86 and PPC"
* tag 'perf-core-2021-10-31' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
perf/x86/intel: Fix ICL/SPR INST_RETIRED.PREC_DIST encodings
powerpc/perf: Fix data source encodings for L2.1 and L3.1 accesses
tools/perf: Add mem_hops field in perf_mem_data_src structure
perf: Add mem_hops field in perf_mem_data_src structure
perf: Add comment about current state of PERF_MEM_LVL_* namespace and remove an extra line
perf/core: Allow ftrace for functions in kernel/event/core.c
perf/x86: Add new event for AUX output counter index
perf/x86: Add compiler barrier after updating BTS
perf/x86/intel/uncore: Fix Intel SPR M3UPI event constraints
perf/x86/intel/uncore: Fix Intel SPR M2PCIE event constraints
perf/x86/intel/uncore: Fix Intel SPR IIO event constraints
perf/x86/intel/uncore: Fix Intel SPR CHA event constraints
perf/x86/intel/uncore: Fix Intel ICX IIO event constraints
perf/x86/intel/uncore: Fix invalid unit check
perf/x86/intel/uncore: Support extra IMC channel on Ice Lake server
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-F weight in perf script is broken.
# ./perf mem record
# ./perf script -F weight
Samples for 'dummy:HG' event do not have WEIGHT attribute set. Cannot
print 'weight' field.
The sample type, PERF_SAMPLE_WEIGHT_STRUCT, is an alternative of the
PERF_SAMPLE_WEIGHT sample type. They share the same space, weight. The
lower 32 bits are exactly the same for both sample type. The higher 32
bits may be different for different architecture. For a new kernel on
x86, the PERF_SAMPLE_WEIGHT_STRUCT is used. For an old kernel or other
ARCHs, the PERF_SAMPLE_WEIGHT is used.
With -F weight, current perf script will only check the input string
"weight" with the PERF_SAMPLE_WEIGHT sample type. Because the commit
ea8d0ed6eae3 ("perf tools: Support PERF_SAMPLE_WEIGHT_STRUCT") didn't
update the PERF_SAMPLE_WEIGHT_STRUCT sample type for perf script. For a
new kernel on x86, the check fails.
Use PERF_SAMPLE_WEIGHT_TYPE, which supports both sample types, to
replace PERF_SAMPLE_WEIGHT
Fixes: ea8d0ed6eae37b01 ("perf tools: Support PERF_SAMPLE_WEIGHT_STRUCT")
Reported-by: Joe Mario <jmario@redhat.com>
Reviewed-by: Kajol Jain <kjain@linux.ibm.com>
Signed-off-by: Kan Liang <kan.liang@linux.intel.com>
Tested-by: Jiri Olsa <jolsa@redhat.com>
Tested-by: Joe Mario <jmario@redhat.com>
Acked-by: Jiri Olsa <jolsa@redhat.com>
Acked-by: Joe Mario <jmario@redhat.com>
Cc: Andi Kleen <ak@linux.intel.com>
Link: https://lore.kernel.org/r/1632929894-102778-1-git-send-email-kan.liang@linux.intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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Got following build fail on powerpc:
CC arch/powerpc/util/skip-callchain-idx.o
In function ‘check_return_reg’,
inlined from ‘check_return_addr’ at arch/powerpc/util/skip-callchain-idx.c:213:7,
inlined from ‘arch_skip_callchain_idx’ at arch/powerpc/util/skip-callchain-idx.c:265:7:
arch/powerpc/util/skip-callchain-idx.c:54:18: error: ‘dwarf_frame_register’ accessing 96 bytes \
in a region of size 64 [-Werror=stringop-overflow=]
54 | result = dwarf_frame_register(frame, ra_regno, ops_mem, &ops, &nops);
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
arch/powerpc/util/skip-callchain-idx.c: In function ‘arch_skip_callchain_idx’:
arch/powerpc/util/skip-callchain-idx.c:54:18: note: referencing argument 3 of type ‘Dwarf_Op *’
In file included from /usr/include/elfutils/libdwfl.h:32,
from arch/powerpc/util/skip-callchain-idx.c:10:
/usr/include/elfutils/libdw.h:1069:12: note: in a call to function ‘dwarf_frame_register’
1069 | extern int dwarf_frame_register (Dwarf_Frame *frame, int regno,
| ^~~~~~~~~~~~~~~~~~~~
cc1: all warnings being treated as errors
The dwarf_frame_register args changed with [1],
Updating ops_mem accordingly.
[1] https://sourceware.org/git/?p=elfutils.git;a=commit;h=5621fe5443da23112170235dd5cac161e5c75e65
Reviewed-by: Kajol Jain <kjain@linux.ibm.com>
Signed-off-by: Jiri Olsa <jolsa@redhat.com>
Acked-by: Mark Wieelard <mjw@redhat.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Michael Petlan <mpetlan@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com>
Link: https://lore.kernel.org/r/20210928195253.1267023-1-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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When perf.data is not written cleanly, we would like to process existing
data as much as possible (please see f_header.data.size == 0 condition
in perf_session__read_header). However, perf.data with partial data may
crash perf. Specifically, we see crash in 'perf script' for NULL
session->header.env.arch.
Fix this by checking session->header.env.arch before using it to determine
native_arch. Also split the if condition so it is easier to read.
Committer notes:
If it is a pipe, we already assume is a native arch, so no need to check
session->header.env.arch.
Signed-off-by: Song Liu <songliubraving@fb.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: kernel-team@fb.com
Cc: stable@vger.kernel.org
Link: http://lore.kernel.org/lkml/20211004053238.514936-1-songliubraving@fb.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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The following build message:
rm dlfilters/dlfilter-test-api-v0.o
is unwanted.
The object file is being treated as an intermediate file and being
automatically removed. Mark the object file as .SECONDARY to prevent
removal and hence the message.
Requested-by: Arnaldo Carvalho de Melo <acme@kernel.org>
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Link: http://lore.kernel.org/lkml/20210930062849.110416-1-adrian.hunter@intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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to pointer
The coccinelle check report:
./tools/testing/selftests/vm/split_huge_page_test.c:344:36-42:
ERROR: application of sizeof to pointer
Use "strlen" to fix it.
Link: https://lkml.kernel.org/r/20211012030116.184027-1-davidcomponentone@gmail.com
Signed-off-by: David Yang <davidcomponentone@gmail.com>
Reported-by: Zeal Robot <zealci@zte.com.cn>
Cc: Zi Yan <ziy@nvidia.com>
Cc: Shuah Khan <shuah@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Instead of writing complete alternatives, simply provide a list of all
the retpoline thunk calls. Then the kernel is free to do with them as
it pleases. Simpler code all-round.
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Borislav Petkov <bp@suse.de>
Acked-by: Josh Poimboeuf <jpoimboe@redhat.com>
Tested-by: Alexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/r/20211026120309.850007165@infradead.org
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Any one instruction can only ever call a single function, therefore
insn->mcount_loc_node is superfluous and can use insn->call_node.
This shrinks struct instruction, which is by far the most numerous
structure objtool creates.
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Borislav Petkov <bp@suse.de>
Acked-by: Josh Poimboeuf <jpoimboe@redhat.com>
Tested-by: Alexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/r/20211026120309.785456706@infradead.org
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Assume ALTERNATIVE()s know what they're doing and do not change, or
cause to change, instructions in .altinstr_replacement sections.
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Borislav Petkov <bp@suse.de>
Acked-by: Josh Poimboeuf <jpoimboe@redhat.com>
Tested-by: Alexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/r/20211026120309.722511775@infradead.org
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In order to avoid calling str*cmp() on symbol names, over and over, do
them all once upfront and store the result.
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Borislav Petkov <bp@suse.de>
Acked-by: Josh Poimboeuf <jpoimboe@redhat.com>
Tested-by: Alexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/r/20211026120309.658539311@infradead.org
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Daniel Borkmann says:
====================
pull-request: bpf 2021-10-26
We've added 12 non-merge commits during the last 7 day(s) which contain
a total of 23 files changed, 118 insertions(+), 98 deletions(-).
The main changes are:
1) Fix potential race window in BPF tail call compatibility check, from Toke Høiland-Jørgensen.
2) Fix memory leak in cgroup fs due to missing cgroup_bpf_offline(), from Quanyang Wang.
3) Fix file descriptor reference counting in generic_map_update_batch(), from Xu Kuohai.
4) Fix bpf_jit_limit knob to the max supported limit by the arch's JIT, from Lorenz Bauer.
5) Fix BPF sockmap ->poll callbacks for UDP and AF_UNIX sockets, from Cong Wang and Yucong Sun.
6) Fix BPF sockmap concurrency issue in TCP on non-blocking sendmsg calls, from Liu Jian.
7) Fix build failure of INODE_STORAGE and TASK_STORAGE maps on !CONFIG_NET, from Tejun Heo.
* https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf:
bpf: Fix potential race in tail call compatibility check
bpf: Move BPF_MAP_TYPE for INODE_STORAGE and TASK_STORAGE outside of CONFIG_NET
selftests/bpf: Use recv_timeout() instead of retries
net: Implement ->sock_is_readable() for UDP and AF_UNIX
skmsg: Extract and reuse sk_msg_is_readable()
net: Rename ->stream_memory_read to ->sock_is_readable
tcp_bpf: Fix one concurrency problem in the tcp_bpf_send_verdict function
cgroup: Fix memory leak caused by missing cgroup_bpf_offline
bpf: Fix error usage of map_fd and fdget() in generic_map_update_batch()
bpf: Prevent increasing bpf_jit_limit above max
bpf: Define bpf_jit_alloc_exec_limit for arm64 JIT
bpf: Define bpf_jit_alloc_exec_limit for riscv JIT
====================
Link: https://lore.kernel.org/r/20211026201920.11296-1-daniel@iogearbox.net
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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We use non-blocking sockets in those tests, retrying for
EAGAIN is ugly because there is no upper bound for the packet
arrival time, at least in theory. After we fix poll() on
sockmap sockets, now we can switch to select()+recv().
Signed-off-by: Yucong Sun <sunyucong@gmail.com>
Signed-off-by: Cong Wang <cong.wang@bytedance.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/bpf/20211008203306.37525-5-xiyou.wangcong@gmail.com
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On my box I see a bunch of ping/nettest processes hanging
around after fcntal-test.sh is done.
Clean those up before netns deletion.
Signed-off-by: Florian Westphal <fw@strlen.de>
Acked-by: David Ahern <dsahern@kernel.org>
Link: https://lore.kernel.org/r/20211021140247.29691-1-fw@strlen.de
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Pull networking fixes from Jakub Kicinski:
"Including fixes from netfilter, and can.
We'll have one more fix for a socket accounting regression, it's still
getting polished. Otherwise things look fine.
Current release - regressions:
- revert "vrf: reset skb conntrack connection on VRF rcv", there are
valid uses for previous behavior
- can: m_can: fix iomap_read_fifo() and iomap_write_fifo()
Current release - new code bugs:
- mlx5: e-switch, return correct error code on group creation failure
Previous releases - regressions:
- sctp: fix transport encap_port update in sctp_vtag_verify
- stmmac: fix E2E delay mechanism (in PTP timestamping)
Previous releases - always broken:
- netfilter: ip6t_rt: fix out-of-bounds read of ipv6_rt_hdr
- netfilter: xt_IDLETIMER: fix out-of-bound read caused by lack of
init
- netfilter: ipvs: make global sysctl read-only in non-init netns
- tcp: md5: fix selection between vrf and non-vrf keys
- ipv6: count rx stats on the orig netdev when forwarding
- bridge: mcast: use multicast_membership_interval for IGMPv3
- can:
- j1939: fix UAF for rx_kref of j1939_priv abort sessions on
receiving bad messages
- isotp: fix TX buffer concurrent access in isotp_sendmsg() fix
return error on FC timeout on TX path
- ice: fix re-init of RDMA Tx queues and crash if RDMA was not inited
- hns3: schedule the polling again when allocation fails, prevent
stalls
- drivers: add missing of_node_put() when aborting
for_each_available_child_of_node()
- ptp: fix possible memory leak and UAF in ptp_clock_register()
- e1000e: fix packet loss in burst mode on Tiger Lake and later
- mlx5e: ipsec: fix more checksum offload issues"
* tag 'net-5.15-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (75 commits)
usbnet: sanity check for maxpacket
net: enetc: make sure all traffic classes can send large frames
net: enetc: fix ethtool counter name for PM0_TERR
ptp: free 'vclock_index' in ptp_clock_release()
sfc: Don't use netif_info before net_device setup
sfc: Export fibre-specific supported link modes
net/mlx5e: IPsec: Fix work queue entry ethernet segment checksum flags
net/mlx5e: IPsec: Fix a misuse of the software parser's fields
net/mlx5e: Fix vlan data lost during suspend flow
net/mlx5: E-switch, Return correct error code on group creation failure
net/mlx5: Lag, change multipath and bonding to be mutually exclusive
ice: Add missing E810 device ids
igc: Update I226_K device ID
e1000e: Fix packet loss on Tiger Lake and later
e1000e: Separate TGP board type from SPT
ptp: Fix possible memory leak in ptp_clock_register()
net: stmmac: Fix E2E delay mechanism
nfc: st95hf: Make spi remove() callback return zero
net: hns3: disable sriov before unload hclge layer
net: hns3: fix vf reset workqueue cannot exit
...
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Pablo Neira Ayuso says:
====================
Netfilter/IPVS fixes for net
The following patchset contains Netfilter fixes for net:
1) Crash due to missing initialization of timer data in
xt_IDLETIMER, from Juhee Kang.
2) NF_CONNTRACK_SECMARK should be bool in Kconfig, from Vegard Nossum.
3) Skip netdev events on netns removal, from Florian Westphal.
4) Add testcase to show port shadowing via UDP, also from Florian.
5) Remove pr_debug() code in ip6t_rt, this fixes a crash due to
unsafe access to non-linear skbuff, from Xin Long.
6) Make net/ipv4/vs/debug_level read-only from non-init netns,
from Antoine Tenart.
7) Remove bogus invocation to bash in selftests/netfilter/nft_flowtable.sh
also from Florian.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
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Pull kvm fixes from Paolo Bonzini:
"Tools:
- kvm_stat: do not show halt_wait_ns since it is not a cumulative statistic
x86:
- clean ups and fixes for bus lock vmexit and lazy allocation of rmaps
- two fixes for SEV-ES (one more coming as soon as I get reviews)
- fix for static_key underflow
ARM:
- Properly refcount pages used as a concatenated stage-2 PGD
- Fix missing unlock when detecting the use of MTE+VM_SHARED"
* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
KVM: SEV-ES: reduce ghcb_sa_len to 32 bits
KVM: VMX: Remove redundant handling of bus lock vmexit
KVM: kvm_stat: do not show halt_wait_ns
KVM: x86: WARN if APIC HW/SW disable static keys are non-zero on unload
Revert "KVM: x86: Open code necessary bits of kvm_lapic_set_base() at vCPU RESET"
KVM: SEV-ES: Set guest_state_protected after VMSA update
KVM: X86: fix lazy allocation of rmaps
KVM: SEV-ES: fix length of string I/O
KVM: arm64: Release mmap_lock when using VM_SHARED with MTE
KVM: arm64: Report corrupted refcount at EL2
KVM: arm64: Fix host stage-2 PGD refcount
KVM: s390: Function documentation fixes
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Going forward, future generation systems can have more hierarchy
within the node/package level but currently we don't have any data source
encoding field in perf, which can be used to represent this level of data.
Add a new field called 'mem_hops' in the perf_mem_data_src structure
which can be used to represent intra-node/package or inter-node/off-package
details. This field is of size 3 bits where PERF_MEM_HOPS_{NA, 0..6} value
can be used to present different hop levels data.
Also add corresponding macros to define mem_hop field values
and shift value.
Currently we define macro for HOPS_0 which corresponds
to data coming from another core but same node.
Add functionality to represent mem_hop field data in
perf_mem__lvl_scnprintf function with the help of added string
array called mem_hops.
For ex: Encodings for mem_hops fields with L2 cache:
L2 - local L2
L2 | REMOTE | HOPS_0 - remote core, same node L2
Since with the addition of HOPS field, now remote can be used to
denote cache access from the same node but different core, a check
is added in the c2c_decode_stats function to set mrem only when HOPS
is zero along with set remote field.
Signed-off-by: Kajol Jain <kjain@linux.ibm.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lore.kernel.org/r/20211006140654.298352-4-kjain@linux.ibm.com
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an extra line
Add a comment about PERF_MEM_LVL_* namespace being depricated
to some extent in favour of added PERF_MEM_{LVLNUM_,REMOTE_,SNOOPX_}
fields.
Remove an extra line present in perf_mem__lvl_scnprintf function.
Signed-off-by: Kajol Jain <kjain@linux.ibm.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lore.kernel.org/r/20211006140654.298352-2-kjain@linux.ibm.com
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In RHEL's gating selftests we've encountered memory corruption in the
uffd event test even with upstream kernel:
# ./userfaultfd anon 128 4
nr_pages: 32768, nr_pages_per_cpu: 32768
bounces: 3, mode: rnd racing read, userfaults: 6240 missing (6240) 14729 wp (14729)
bounces: 2, mode: racing read, userfaults: 1444 missing (1444) 28877 wp (28877)
bounces: 1, mode: rnd read, userfaults: 6055 missing (6055) 14699 wp (14699)
bounces: 0, mode: read, userfaults: 82 missing (82) 25196 wp (25196)
testing uffd-wp with pagemap (pgsize=4096): done
testing uffd-wp with pagemap (pgsize=2097152): done
testing events (fork, remap, remove): ERROR: nr 32427 memory corruption 0 1 (errno=0, line=963)
ERROR: faulting process failed (errno=0, line=1117)
It can be easily reproduced when global thp enabled, which is the
default for RHEL.
It's also known as a side effect of commit 0db282ba2c12 ("selftest: use
mmap instead of posix_memalign to allocate memory", 2021-07-23), which
is imho right itself on using mmap() to make sure the addresses will be
untagged even on arm.
The problem is, for each test we allocate buffers using two
allocate_area() calls. We assumed these two buffers won't affect each
other, however they could, because mmap() could have found that the two
buffers are near each other and having the same VMA flags, so they got
merged into one VMA.
It won't be a big problem if thp is not enabled, but when thp is
agressively enabled it means when initializing the src buffer it could
accidentally setup part of the dest buffer too when there's a shared THP
that overlaps the two regions. Then some of the dest buffer won't be
able to be trapped by userfaultfd missing mode, then it'll cause memory
corruption as described.
To fix it, do release_pages() after initializing the src buffer.
Since the previous two release_pages() calls are after
uffd_test_ctx_clear() which will unmap all the buffers anyway (which is
stronger than release pages; as unmap() also tear town pgtables), drop
them as they shouldn't really be anything useful.
We can mark the Fixes tag upon 0db282ba2c12 as it's reported to only
happen there, however the real "Fixes" IMHO should be 8ba6e8640844, as
before that commit we'll always do explicit release_pages() before
registration of uffd, and 8ba6e8640844 changed that logic by adding
extra unmap/map and we didn't release the pages at the right place.
Meanwhile I don't have a solid glue anyway on whether posix_memalign()
could always avoid triggering this bug, hence it's safer to attach this
fix to commit 8ba6e8640844.
Link: https://lkml.kernel.org/r/20210923232512.210092-1-peterx@redhat.com
Fixes: 8ba6e8640844 ("userfaultfd/selftests: reinitialize test context in each test")
Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=1994931
Signed-off-by: Peter Xu <peterx@redhat.com>
Reported-by: Li Wang <liwan@redhat.com>
Tested-by: Li Wang <liwang@redhat.com>
Reviewed-by: Axel Rasmussen <axelrasmussen@google.com>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: Nadav Amit <nadav.amit@gmail.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
|
|
Similar to commit 111d0bda8eeb ("tools/kvm_stat: Exempt time-based
counters"), we should not show timer values in kvm_stat. Remove the new
halt_wait_ns.
Fixes: 87bcc5fa092f ("KVM: stats: Add halt_wait_ns stats for all architectures")
Cc: Jing Zhang <jingzhangos@google.com>
Cc: Stefan Raspl <raspl@de.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Reviewed-by: Stefan Raspl <raspl@linux.ibm.com>
Message-Id: <20211006121724.4154-1-borntraeger@de.ibm.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
|
|
Kernel TLS test has added SM4 GCM/CCM algorithm support, but SM4
algorithm is not compiled by default, this patch add SM4 config
dependency.
Reported-by: Hangbin Liu <liuhangbin@gmail.com>
Reported-by: kernel test robot <oliver.sang@intel.com>
Signed-off-by: Tianjia Zhang <tianjia.zhang@linux.alibaba.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
|
|
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull objtool fixes from Borislav Petkov:
- Update section headers before the respective relocations to not
trigger a safety check in elftoolchain's implementation of libelf
- Do not add garbage data to the .rela.orc_unwind_ip section
* tag 'objtool_urgent_for_v5.15_rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
objtool: Update section header before relocations
objtool: Check for gelf_update_rel[a] failures
|
|
git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux
Pull perf tools fixes from Arnaldo Carvalho de Melo:
- Fix 'perf test evsel' build error on !x86 architectures
- Fix libperf's test_stat_cpu mixup of CPU numbers and CPU indexes
- Output offsets for decompressed records, not just useless zeros
* tag 'perf-tools-fixes-for-v5.15-2021-10-16' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux:
libperf tests: Fix test_stat_cpu
libperf test evsel: Fix build error on !x86 architectures
perf report: Output non-zero offset for decompressed records
|
|
git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace
Tracing fixes for 5.15:
- Fix defined but not use warning/error for osnoise function
- Fix memory leak in event probe
- Fix memblock leak in bootconfig
- Fix the API of event probes to be like kprobes
- Added test to check removal of event probe API
- Fix recordmcount.pl for nds32 failed build
* tag 'trace-v5.15-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace:
nds32/ftrace: Fix Error: invalid operands (*UND* and *UND* sections) for `^'
selftests/ftrace: Update test for more eprobe removal process
tracing: Fix event probe removal from dynamic events
tracing: Fix missing * in comment block
bootconfig: init: Fix memblock leak in xbc_make_cmdline()
tracing: Fix memory leak in eprobe_register()
tracing: Fix missing osnoise tracer on max_latency
|
|
In `test_no_sockets` we don't expect any sockets, indeed
check_no_sockets() prints an error and exits if `sockets` list is
not empty, so free_sock_stat() call is unnecessary since it would
only be called when the `sockets` list is empty.
This was discovered by a strange warning printed by gcc v11.2.1:
In file included from ../../include/linux/list.h:7,
from vsock_diag_test.c:18:
vsock_diag_test.c: In function ‘test_no_sockets’:
../../include/linux/kernel.h:35:45: error: array subscript ‘struct vsock_stat[0]’ is partly outside array bound
s of ‘struct list_head[1]’ [-Werror=array-bounds]
35 | const typeof(((type *)0)->member) * __mptr = (ptr); \
| ^~~~~~
../../include/linux/list.h:352:9: note: in expansion of macro ‘container_of’
352 | container_of(ptr, type, member)
| ^~~~~~~~~~~~
../../include/linux/list.h:393:9: note: in expansion of macro ‘list_entry’
393 | list_entry((pos)->member.next, typeof(*(pos)), member)
| ^~~~~~~~~~
../../include/linux/list.h:522:21: note: in expansion of macro ‘list_next_entry’
522 | n = list_next_entry(pos, member); \
| ^~~~~~~~~~~~~~~
vsock_diag_test.c:325:9: note: in expansion of macro ‘list_for_each_entry_safe’
325 | list_for_each_entry_safe(st, next, sockets, list) {
| ^~~~~~~~~~~~~~~~~~~~~~~~
In file included from vsock_diag_test.c:18:
vsock_diag_test.c:333:19: note: while referencing ‘sockets’
333 | LIST_HEAD(sockets);
| ^~~~~~~
../../include/linux/list.h:23:26: note: in definition of macro ‘LIST_HEAD’
23 | struct list_head name = LIST_HEAD_INIT(name)
It seems related to some compiler optimization and assumption
about the empty `sockets` list, since this warning is printed
only with -02 or -O3. Also removing `exit(1)` from
check_no_sockets() makes the warning disappear since in that
case free_sock_stat() can be reached also when the list is
not empty.
Reported-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Signed-off-by: Stefano Garzarella <sgarzare@redhat.com>
Link: https://lore.kernel.org/r/20211014152045.173872-1-sgarzare@redhat.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
|
|
Commit bdb7cc643fc9 ("ipv6: Count interface receive statistics on the
ingress netdev") does not work when ip6_forward() executes on the skbs
with vrf-enslaved netdev. Use IP6CB(skb)->iif to get to the right one.
Add a selftest script to verify.
Fixes: bdb7cc643fc9 ("ipv6: Count interface receive statistics on the ingress netdev")
Signed-off-by: Stephen Suryaputra <ssuryaextr@gmail.com>
Reviewed-by: David Ahern <dsahern@kernel.org>
Link: https://lore.kernel.org/r/20211014130845.410602-1-ssuryaextr@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
|
|
Test that applications binding listening sockets to VRFs without
specifying TCP_MD5SIG_FLAG_IFINDEX will work as expected. This would
be broken if __tcp_md5_do_lookup always made a strict comparison on
l3index. See this email:
https://lore.kernel.org/netdev/209548b5-27d2-2059-f2e9-2148f5a0291b@gmail.com/
Applications using tcp_l3mdev_accept=1 and a single global socket (not
bound to any interface) also should have a way to specify keys that are
only for the default VRF, this is done by --force-bind-key-ifindex
without otherwise binding to a device.
Signed-off-by: Leonard Crestez <cdleonard@gmail.com>
Reviewed-by: David Ahern <dsahern@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
|
|
These options allow explicit control over the TCP_MD5SIG_FLAG_IFINDEX
flag instead of always setting it based on binding to an interface.
Do this by converting to getopt_long because nettest has too many
single-character flags already and getopt_long is widely used in
selftests.
Signed-off-by: Leonard Crestez <cdleonard@gmail.com>
Reviewed-by: David Ahern <dsahern@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
|
|
git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Pull networking fixes from Jakub Kicinski:
"Quite calm.
The noisy DSA driver (embedded switches) changes, and adjustment to
IPv6 IOAM behavior add to diffstat's bottom line but are not scary.
Current release - regressions:
- af_unix: rename UNIX-DGRAM to UNIX to maintain backwards
compatibility
- procfs: revert "add seq_puts() statement for dev_mcast", minor
format change broke user space
Current release - new code bugs:
- dsa: fix bridge_num not getting cleared after ports leaving the
bridge, resource leak
- dsa: tag_dsa: send packets with TX fwd offload from VLAN-unaware
bridges using VID 0, prevent packet drops if pvid is removed
- dsa: mv88e6xxx: keep the pvid at 0 when VLAN-unaware, prevent HW
getting confused about station to VLAN mapping
Previous releases - regressions:
- virtio-net: fix for skb_over_panic inside big mode
- phy: do not shutdown PHYs in READY state
- dsa: mv88e6xxx: don't use PHY_DETECT on internal PHY's, fix link
LED staying lit after ifdown
- mptcp: fix possible infinite wait on recvmsg(MSG_WAITALL)
- mqprio: Correct stats in mqprio_dump_class_stats()
- ice: fix deadlock for Tx timestamp tracking flush
- stmmac: fix feature detection on old hardware
Previous releases - always broken:
- sctp: account stream padding length for reconf chunk
- icmp: fix icmp_ext_echo_iio parsing in icmp_build_probe()
- isdn: cpai: check ctr->cnr to avoid array index out of bound
- isdn: mISDN: fix sleeping function called from invalid context
- nfc: nci: fix potential UAF of rf_conn_info object
- dsa: microchip: prevent ksz_mib_read_work from kicking back in
after it's canceled in .remove and crashing
- dsa: mv88e6xxx: isolate the ATU databases of standalone and bridged
ports
- dsa: sja1105, ocelot: break circular dependency between switch and
tag drivers
- dsa: felix: improve timestamping in presence of packe loss
- mlxsw: thermal: fix out-of-bounds memory accesses
Misc:
- ipv6: ioam: move the check for undefined bits to improve
interoperability"
* tag 'net-5.15-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (60 commits)
icmp: fix icmp_ext_echo_iio parsing in icmp_build_probe
MAINTAINERS: Update the devicetree documentation path of imx fec driver
sctp: account stream padding length for reconf chunk
mlxsw: thermal: Fix out-of-bounds memory accesses
ethernet: s2io: fix setting mac address during resume
NFC: digital: fix possible memory leak in digital_in_send_sdd_req()
NFC: digital: fix possible memory leak in digital_tg_listen_mdaa()
nfc: fix error handling of nfc_proto_register()
Revert "net: procfs: add seq_puts() statement for dev_mcast"
net: encx24j600: check error in devm_regmap_init_encx24j600
net: korina: select CRC32
net: arc: select CRC32
net: dsa: felix: break at first CPU port during init and teardown
net: dsa: tag_ocelot_8021q: fix inability to inject STP BPDUs into BLOCKING ports
net: dsa: felix: purge skb from TX timestamping queue if it cannot be sent
net: dsa: tag_ocelot_8021q: break circular dependency with ocelot switch lib
net: dsa: tag_ocelot: break circular dependency with ocelot switch lib driver
net: mscc: ocelot: cross-check the sequence id from the timestamp FIFO with the skb PTP header
net: mscc: ocelot: deny TX timestamping of non-PTP packets
net: mscc: ocelot: warn when a PTP IRQ is raised for an unknown skb
...
|
|
This should not be there.
Fixes: 2de03b45236f ("selftests: netfilter: add flowtable test script")
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
|
|
The `cpu` argument of perf_evsel__read() must specify the cpu index.
perf_cpu_map__for_each_cpu() is for iterating the cpu number (not index)
and is thus not appropriate for use with perf_evsel__read().
So, if there is an offline CPU, the cpu number specified in the argument
may point out of range because the cpu number and the cpu index are
different.
Fix test_stat_cpu().
Testing it:
# make tests -C tools/lib/perf/
make: Entering directory '/home/nakamura/kernel_src/linux-5.15-rc4_fix/tools/lib/perf'
running static:
- running tests/test-cpumap.c...OK
- running tests/test-threadmap.c...OK
- running tests/test-evlist.c...OK
- running tests/test-evsel.c...OK
running dynamic:
- running tests/test-cpumap.c...OK
- running tests/test-threadmap.c...OK
- running tests/test-evlist.c...OK
- running tests/test-evsel.c...OK
make: Leaving directory '/home/nakamura/kernel_src/linux-5.15-rc4_fix/tools/lib/perf'
Signed-off-by: Shunsuke Nakamura <nakamura.shun@fujitsu.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lore.kernel.org/lkml/20211011083704.4108720-1-nakamura.shun@fujitsu.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
|
|
In test_stat_user_read, following build error occurs except i386 and
x86_64 architectures:
tests/test-evsel.c:129:31: error: variable 'pc' set but not used [-Werror=unused-but-set-variable]
struct perf_event_mmap_page *pc;
Fix build error.
Signed-off-by: Shunsuke Nakamura <nakamura.shun@fujitsu.com>
Acked-by: Jiri Olsa <jolsa@redhat.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: https://lore.kernel.org/r/20211006095703.477826-1-nakamura.shun@fujitsu.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
|
|
Print offset of PERF_RECORD_COMPRESSED record instead of zero for
decompressed records in raw trace dump (-D option of perf-report):
0x17cf08 [0x28]: event: 9
instead of:
0 [0x28]: event: 9
The fix is not critical, because currently file_pos for compressed
events is used in perf_session__process_event only to show offsets
in the raw dump.
This patch was separated from patchset:
https://lore.kernel.org/lkml/cover.1629186429.git.alexey.v.bayduraev@linux.intel.com/
and was already rewieved.
Reviewed-by: Riccardo Mancini <rickyman7@gmail.com>
Signed-off-by: Alexey Bayduraev <alexey.v.bayduraev@linux.intel.com>
Tested-by: Riccardo Mancini <rickyman7@gmail.com>
Acked-by: Andi Kleen <ak@linux.intel.com>
Acked-by: Jiri Olsa <jolsa@redhat.com>
Acked-by: Namhyung Kim <namhyung@kernel.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Alexander Antonov <alexander.antonov@linux.intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Alexei Budankov <abudankov@huawei.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: https://lore.kernel.org/r/20210929091445.18274-1-alexey.v.bayduraev@linux.intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
|
|
The removal of eprobes was broken and missed in testing. Add various ways
to remove eprobes that are considered acceptable to the testing process to
catch when/if they break again.
Link: https://lkml.kernel.org/r/20211013205533.836644549@goodmis.org
Acked-by: Masami Hiramatsu <mhiramat@kernel.org>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
|
|
The output behavior for undefined bits is now directly tested inside the bash
script. Trying to set an undefined bit should be refused.
The input behavior for undefined bits has been removed due to the fact that we
would need another sender allowed to set undefined bits.
Signed-off-by: Justin Iurman <justin.iurman@uliege.be>
Signed-off-by: David S. Miller <davem@davemloft.net>
|
|
git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest
Pull Kunit fixes from Shuah Khan:
- Fixes to address the structleak plugin causing the stack frame size
to grow immensely when used with KUnit. Fixes include adding a new
makefile to disable structleak and using it from KUnit iio, device
property, thunderbolt, and bitfield tests to disable it.
- KUnit framework reference count leak in kfree_at_end
- KUnit tool fix to resolve conflict between --json and --raw_output
and generate correct test output in either case.
- kernel-doc warnings due to mismatched arg names
* tag 'linux-kselftest-kunit-fixes-5.15-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest:
kunit: fix kernel-doc warnings due to mismatched arg names
bitfield: build kunit tests without structleak plugin
thunderbolt: build kunit tests without structleak plugin
device property: build kunit tests without structleak plugin
iio/test-format: build kunit tests without structleak plugin
gcc-plugins/structleak: add makefile var for disabling structleak
kunit: fix reference count leak in kfree_at_end
kunit: tool: better handling of quasi-bool args (--json, --raw_output)
|
|
Add a test case that demonstrates port shadowing via UDP.
ns2 sends packet to ns1, from source port used by a udp service on the
router, ns0. Then, ns1 sends packet to ns0:service, but that ends up getting
forwarded to ns2.
Also add three test cases that demonstrate mitigations:
1. disable use of $port as source from 'unstrusted' origin
2. make the service untracked. This prevents masquerade entries
from having any effects.
3. add forced PAT via 'random' mode to translate the "wrong" sport
into an acceptable range.
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
|
|
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull objtool fixes from Borislav Petkov:
- Remove an extra section.len member in favour of section.sh_size
- Align .altinstructions section creation with the kernel's by creating
them with entry size of 0
- Fix objtool to convert a reloc symbol to a section offset and not to
not warn about not knowing how
* tag 'objtool_urgent_for_v5.15_rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
objtool: Remove redundant 'len' field from struct section
objtool: Make .altinstructions section entry size consistent
objtool: Remove reloc symbol type checks in get_alt_entry()
|
|
git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux
Pull perf tools fixes from Arnaldo Carvalho de Melo:
- Fix plugin static linking with libopencsd on ARM and ARM64
- Add missing -lstdc++ when linking with libopencsd
- Add missing topdown metrics events to 'perf test attr'
- Plug leak sys_event_tables list after processing JSON vendor events
entries
- Sync sound/asound.h copy with the kernel sources
* tag 'perf-tools-fixes-for-v5.15-2021-10-07' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux:
perf tests attr: Add missing topdown metrics events
tools include UAPI: Sync sound/asound.h copy with the kernel sources
perf build: Fix plugin static linking with libopencsd on ARM and ARM64
perf build: Add missing -lstdc++ when linking with libopencsd
perf jevents: Free the sys_event_tables list after processing entries
|
|
git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Pull networking fixes from Jakub Kicinski:
"Including fixes from xfrm, bpf, netfilter, and wireless.
Current release - regressions:
- xfrm: fix XFRM_MSG_MAPPING ABI breakage caused by inserting a new
value in the middle of an enum
- unix: fix an issue in unix_shutdown causing the other end
read/write failures
- phy: mdio: fix memory leak
Current release - new code bugs:
- mlx5e: improve MQPRIO resiliency against bad configs
Previous releases - regressions:
- bpf: fix integer overflow leading to OOB access in map element
pre-allocation
- stmmac: dwmac-rk: fix ethernet on rk3399 based devices
- netfilter: conntrack: fix boot failure with
nf_conntrack.enable_hooks=1
- brcmfmac: revert using ISO3166 country code and 0 rev as fallback
- i40e: fix freeing of uninitialized misc IRQ vector
- iavf: fix double unlock of crit_lock
Previous releases - always broken:
- bpf, arm: fix register clobbering in div/mod implementation
- netfilter: nf_tables: correct issues in netlink rule change event
notifications
- dsa: tag_dsa: fix mask for trunked packets
- usb: r8152: don't resubmit rx immediately to avoid soft lockup on
device unplug
- i40e: fix endless loop under rtnl if FW fails to correctly respond
to capability query
- mlx5e: fix rx checksum offload coexistence with ipsec offload
- mlx5: force round second at 1PPS out start time and allow it only
in supported clock modes
- phy: pcs: xpcs: fix incorrect CL37 AN sequence, EEE disable
sequence
Misc:
- xfrm: slightly rejig the new policy uAPI to make it less cryptic"
* tag 'net-5.15-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (66 commits)
net: prefer socket bound to interface when not in VRF
iavf: fix double unlock of crit_lock
i40e: Fix freeing of uninitialized misc IRQ vector
i40e: fix endless loop under rtnl
dt-bindings: net: dsa: marvell: fix compatible in example
ionic: move filter sync_needed bit set
gve: report 64bit tx_bytes counter from gve_handle_report_stats()
gve: fix gve_get_stats()
rtnetlink: fix if_nlmsg_stats_size() under estimation
gve: Properly handle errors in gve_assign_qpl
gve: Avoid freeing NULL pointer
gve: Correct available tx qpl check
unix: Fix an issue in unix_shutdown causing the other end read/write failures
net: stmmac: trigger PCS EEE to turn off on link down
net: pcs: xpcs: fix incorrect steps on disable EEE
netlink: annotate data races around nlk->bound
net: pcs: xpcs: fix incorrect CL37 AN sequence
net: sfp: Fix typo in state machine debug string
net/sched: sch_taprio: properly cancel timer from taprio_destroy()
net: bridge: fix under estimation in br_get_linkxstats_size()
...
|
|
Daniel Borkmann says:
====================
pull-request: bpf 2021-10-07
We've added 7 non-merge commits during the last 8 day(s) which contain
a total of 8 files changed, 38 insertions(+), 21 deletions(-).
The main changes are:
1) Fix ARM BPF JIT to preserve caller-saved regs for DIV/MOD JIT-internal
helper call, from Johan Almbladh.
2) Fix integer overflow in BPF stack map element size calculation when
used with preallocation, from Tatsuhiko Yasumatsu.
3) Fix an AF_UNIX regression due to added BPF sockmap support related
to shutdown handling, from Jiang Wang.
4) Fix a segfault in libbpf when generating light skeletons from objects
without BTF, from Kumar Kartikeya Dwivedi.
5) Fix a libbpf memory leak in strset to free the actual struct strset
itself, from Andrii Nakryiko.
6) Dual-license bpf_insn.h similarly as we did for libbpf and bpftool,
with ACKs from all contributors, from Luca Boccassi.
====================
Link: https://lore.kernel.org/r/20211007135010.21143-1-daniel@iogearbox.net
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
|
|
Test if futex_waitv() returns -EWOULDBLOCK correctly when the expected
value is different from the actual value for a waiter.
Signed-off-by: André Almeida <andrealmeid@collabora.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lore.kernel.org/r/20210923171111.300673-22-andrealmeid@collabora.com
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Test if the futex_waitv timeout is working as expected, using the
supported clockid options.
Signed-off-by: André Almeida <andrealmeid@collabora.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lore.kernel.org/r/20210923171111.300673-21-andrealmeid@collabora.com
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Create a new file to test the waitv mechanism. Test both private and
shared futexes. Wake the last futex in the array, and check if the
return value from futex_waitv() is the right index.
Signed-off-by: André Almeida <andrealmeid@collabora.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lore.kernel.org/r/20210923171111.300673-20-andrealmeid@collabora.com
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The libelf implementation from elftoolchain has a safety check in
gelf_update_rel[a] to check that the data corresponds to a section
that has type SHT_REL[A] [0]. If the relocation is updated before
the section header is updated with the proper type, this check
fails.
To fix this, update the section header first, before the relocations.
Previously, the section size was calculated in elf_rebuild_reloc_section
by counting the number of entries in the reloc_list. However, we
now need the size during elf_write so instead keep a running total
and add to it for every new relocation.
[0] https://sourceforge.net/p/elftoolchain/mailman/elftoolchain-developers/thread/CAGw6cBtkZro-8wZMD2ULkwJ39J+tHtTtAWXufMjnd3cQ7XG54g@mail.gmail.com/
Signed-off-by: Michael Forney <mforney@mforney.org>
Reviewed-by: Miroslav Benes <mbenes@suse.cz>
Signed-off-by: Josh Poimboeuf <jpoimboe@redhat.com>
Link: https://lore.kernel.org/r/20210509000103.11008-2-mforney@mforney.org
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Otherwise, if these fail we end up with garbage data in the
.rela.orc_unwind_ip section, leading to errors like
ld: fs/squashfs/namei.o: bad reloc symbol index (0x7f16 >= 0x12) for offset 0x7f16d5c82cc8 in section `.orc_unwind_ip'
Signed-off-by: Michael Forney <mforney@mforney.org>
Reviewed-by: Miroslav Benes <mbenes@suse.cz>
Signed-off-by: Josh Poimboeuf <jpoimboe@redhat.com>
Link: https://lore.kernel.org/r/20210509000103.11008-1-mforney@mforney.org
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Fixup conflicts.
# Conflicts:
# tools/objtool/check.c
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The section structure already contains sh_size, so just remove the extra
'len' member that requires extra mirroring and potential confusion.
Suggested-by: Josh Poimboeuf <jpoimboe@redhat.com>
Signed-off-by: Joe Lawrence <joe.lawrence@redhat.com>
Reviewed-by: Miroslav Benes <mbenes@suse.cz>
Signed-off-by: Josh Poimboeuf <jpoimboe@redhat.com>
Link: https://lore.kernel.org/r/20210822225037.54620-3-joe.lawrence@redhat.com
Cc: Andy Lavr <andy.lavr@gmail.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: x86@kernel.org
Cc: linux-kernel@vger.kernel.org
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