| Commit message (Collapse) | Author | Age | Files | Lines |
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Pull KVM fixes from Paolo Bonzini:
"Bugfixes and improvements to selftests.
On top of this, Mauro converted the KVM documentation to rst format,
which was very welcome"
* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (44 commits)
docs: virt: guest-halt-polling.txt convert to ReST
docs: kvm: review-checklist.txt: rename to ReST
docs: kvm: Convert timekeeping.txt to ReST format
docs: kvm: Convert s390-diag.txt to ReST format
docs: kvm: Convert ppc-pv.txt to ReST format
docs: kvm: Convert nested-vmx.txt to ReST format
docs: kvm: Convert mmu.txt to ReST format
docs: kvm: Convert locking.txt to ReST format
docs: kvm: Convert hypercalls.txt to ReST format
docs: kvm: arm/psci.txt: convert to ReST
docs: kvm: convert arm/hyp-abi.txt to ReST
docs: kvm: Convert api.txt to ReST format
docs: kvm: convert devices/xive.txt to ReST
docs: kvm: convert devices/xics.txt to ReST
docs: kvm: convert devices/vm.txt to ReST
docs: kvm: convert devices/vfio.txt to ReST
docs: kvm: convert devices/vcpu.txt to ReST
docs: kvm: convert devices/s390_flic.txt to ReST
docs: kvm: convert devices/mpic.txt to ReST
docs: kvm: convert devices/arm-vgit.txt to ReST
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x86_register enum is not used, let's remove it.
Signed-off-by: Eric Auger <eric.auger@redhat.com>
Suggested-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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L2 guest calls vmcall and L1 checks the exit status does
correspond.
Signed-off-by: Eric Auger <eric.auger@redhat.com>
Reviewed-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Reviewed-by: Miaohe Lin <linmiaohe@huawei.com>
Tested-by: Wei Huang <wei.huang2@amd.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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Add the basic infrastructure needed to test AMD nested SVM.
This is largely copied from the KVM unit test infrastructure.
Signed-off-by: Eric Auger <eric.auger@redhat.com>
Reviewed-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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get_gdt_base() and get_idt_base() only return the base address
of the descriptor tables. Soon we will need to get the size as well.
Change the prototype of those functions so that they return
the whole desc_ptr struct instead of the address field.
Signed-off-by: Eric Auger <eric.auger@redhat.com>
Reviewed-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Reviewed-by: Miaohe Lin <linmiaohe@huawei.com>
Reviewed-by: Wei Huang <wei.huang2@amd.com>
Reviewed-by: Krish Sadhukhan <krish.sadhukhan@oracle.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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Because wireguard is calling icmp from network device context, it should
use the ndo helper so that the rate limiting applies correctly. This
commit adds a small test to the wireguard test suite to ensure that the
new functions continue doing the right thing in the context of
wireguard. It does this by setting up a condition that will definately
evoke an icmp error message from the driver, but along a nat'd path.
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Pull networking fixes from David Miller:
1) Unbalanced locking in mwifiex_process_country_ie, from Brian Norris.
2) Fix thermal zone registration in iwlwifi, from Andrei
Otcheretianski.
3) Fix double free_irq in sgi ioc3 eth, from Thomas Bogendoerfer.
4) Use after free in mptcp, from Florian Westphal.
5) Use after free in wireguard's root_remove_peer_lists, from Eric
Dumazet.
6) Properly access packets heads in bonding alb code, from Eric
Dumazet.
7) Fix data race in skb_queue_len(), from Qian Cai.
8) Fix regression in r8169 on some chips, from Heiner Kallweit.
9) Fix XDP program ref counting in hv_netvsc, from Haiyang Zhang.
10) Certain kinds of set link netlink operations can cause a NULL deref
in the ipv6 addrconf code. Fix from Eric Dumazet.
11) Don't cancel uninitialized work queue in drop monitor, from Ido
Schimmel.
* git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (84 commits)
net: thunderx: use proper interface type for RGMII
mt76: mt7615: fix max_nss in mt7615_eeprom_parse_hw_cap
bpf: Improve bucket_log calculation logic
selftests/bpf: Test freeing sockmap/sockhash with a socket in it
bpf, sockhash: Synchronize_rcu before free'ing map
bpf, sockmap: Don't sleep while holding RCU lock on tear-down
bpftool: Don't crash on missing xlated program instructions
bpf, sockmap: Check update requirements after locking
drop_monitor: Do not cancel uninitialized work item
mlxsw: spectrum_dpipe: Add missing error path
mlxsw: core: Add validation of hardware device types for MGPIR register
mlxsw: spectrum_router: Clear offload indication from IPv6 nexthops on abort
selftests: mlxsw: Add test cases for local table route replacement
mlxsw: spectrum_router: Prevent incorrect replacement of local table routes
net: dsa: microchip: enable module autoprobe
ipv6/addrconf: fix potential NULL deref in inet6_set_link_af()
dpaa_eth: support all modes with rate adapting PHYs
net: stmmac: update pci platform data to use phy_interface
net: stmmac: xgmac: fix missing IFF_MULTICAST checki in dwxgmac2_set_filter
net: stmmac: fix missing IFF_MULTICAST check in dwmac4_set_filter
...
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Daniel Borkmann says:
====================
pull-request: bpf 2020-02-07
The following pull-request contains BPF updates for your *net* tree.
We've added 15 non-merge commits during the last 10 day(s) which contain
a total of 12 files changed, 114 insertions(+), 31 deletions(-).
The main changes are:
1) Various BPF sockmap fixes related to RCU handling in the map's tear-
down code, from Jakub Sitnicki.
2) Fix macro state explosion in BPF sk_storage map when calculating its
bucket_log on allocation, from Martin KaFai Lau.
3) Fix potential BPF sockmap update race by rechecking socket's established
state under lock, from Lorenz Bauer.
4) Fix crash in bpftool on missing xlated instructions when kptr_restrict
sysctl is set, from Toke Høiland-Jørgensen.
5) Fix i40e's XSK wakeup code to return proper error in busy state and
various misc fixes in xdpsock BPF sample code, from Maciej Fijalkowski.
6) Fix the way modifiers are skipped in BTF in the verifier while walking
pointers to avoid program rejection, from Alexei Starovoitov.
7) Fix Makefile for runqslower BPF tool to i) rebuild on libbpf changes and
ii) to fix undefined reference linker errors for older gcc version due to
order of passed gcc parameters, from Yulia Kartseva and Song Liu.
8) Fix a trampoline_count BPF kselftest warning about missing braces around
initializer, from Andrii Nakryiko.
9) Fix up redundant "HAVE" prefix from large INSN limit kernel probe in
bpftool, from Michal Rostecki.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
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Commit 7e81a3530206 ("bpf: Sockmap, ensure sock lock held during tear
down") introduced sleeping issues inside RCU critical sections and while
holding a spinlock on sockmap/sockhash tear-down. There has to be at least
one socket in the map for the problem to surface.
This adds a test that triggers the warnings for broken locking rules. Not a
fix per se, but rather tooling to verify the accompanying fixes. Run on a
VM with 1 vCPU to reproduce the warnings.
Fixes: 7e81a3530206 ("bpf: Sockmap, ensure sock lock held during tear down")
Signed-off-by: Jakub Sitnicki <jakub@cloudflare.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: John Fastabend <john.fastabend@gmail.com>
Link: https://lore.kernel.org/bpf/20200206111652.694507-4-jakub@cloudflare.com
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Fix missing braces compilation warning in trampoline_count test:
.../prog_tests/trampoline_count.c: In function ‘test_trampoline_count’:
.../prog_tests/trampoline_count.c:49:9: warning: missing braces around initializer [-Wmissing-braces]
struct inst inst[MAX_TRAMP_PROGS] = { 0 };
^
.../prog_tests/trampoline_count.c:49:9: warning: (near initialization for ‘inst[0]’) [-Wmissing-braces]
Fixes: d633d57902a5 ("selftest/bpf: Add test for allowed trampolines count")
Signed-off-by: Andrii Nakryiko <andriin@fb.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Yonghong Song <yhs@fb.com>
Link: https://lore.kernel.org/bpf/20200202065152.2718142-1-andriin@fb.com
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Test that routes in the main table do not replace identical routes in
the local table and that routes in the local table do replace identical
routes in the main table.
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Acked-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Turns out that when we accept a new subflow, the newly created
inet_sk(tcp_sk)->pinet6 points at the ipv6_pinfo structure of the
listener socket.
This wasn't caught by the selftest because it closes the accepted fd
before the listening one.
adding a close(listenfd) after accept returns is enough:
BUG: KASAN: use-after-free in inet6_getname+0x6ba/0x790
Read of size 1 at addr ffff88810e310866 by task mptcp_connect/2518
Call Trace:
inet6_getname+0x6ba/0x790
__sys_getpeername+0x10b/0x250
__x64_sys_getpeername+0x6f/0xb0
also alter test program to exercise this.
Reported-by: Christoph Paasch <cpaasch@apple.com>
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Without this, we wind up proceeding too early sometimes when the
previous process has just used the same listening port. So, we tie the
listening socket query to the specific pid we're interested in.
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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CONFIG_ENABLE_WARN_DEPRECATED is gone since commit 771c035372a0
("deprecate the '__deprecated' attribute warnings entirely and for
good").
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Ensure that peers with low order points are ignored, both in the case
where we already have a device private key and in the case where we do
not. This adds points that naturally give a zero output.
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Pull more KVM updates from Paolo Bonzini:
"s390:
- fix register corruption
- ENOTSUPP/EOPNOTSUPP mixed
- reset cleanups/fixes
- selftests
x86:
- Bug fixes and cleanups
- AMD support for APIC virtualization even in combination with
in-kernel PIT or IOAPIC.
MIPS:
- Compilation fix.
Generic:
- Fix refcount overflow for zero page"
* tag 'kvm-5.6-2' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (42 commits)
KVM: vmx: delete meaningless vmx_decache_cr0_guest_bits() declaration
KVM: x86: Mark CR4.UMIP as reserved based on associated CPUID bit
x86: vmxfeatures: rename features for consistency with KVM and manual
KVM: SVM: relax conditions for allowing MSR_IA32_SPEC_CTRL accesses
KVM: x86: Fix perfctr WRMSR for running counters
x86/kvm/hyper-v: don't allow to turn on unsupported VMX controls for nested guests
x86/kvm/hyper-v: move VMX controls sanitization out of nested_enable_evmcs()
kvm: mmu: Separate generating and setting mmio ptes
kvm: mmu: Replace unsigned with unsigned int for PTE access
KVM: nVMX: Remove stale comment from nested_vmx_load_cr3()
KVM: MIPS: Fold comparecount_func() into comparecount_wakeup()
KVM: MIPS: Fix a build error due to referencing not-yet-defined function
x86/kvm: do not setup pv tlb flush when not paravirtualized
KVM: fix overflow of zero page refcount with ksm running
KVM: x86: Take a u64 when checking for a valid dr7 value
KVM: x86: use raw clock values consistently
KVM: x86: reorganize pvclock_gtod_data members
KVM: nVMX: delete meaningless nested_vmx_run() declaration
KVM: SVM: allow AVIC without split irqchip
kvm: ioapic: Lazy update IOAPIC EOI
...
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git://git.kernel.org/pub/scm/linux/kernel/git/kvms390/linux into HEAD
KVM: s390: Fixes and cleanups for 5.6
- fix register corruption
- ENOTSUPP/EOPNOTSUPP mixed
- reset cleanups/fixes
- selftests
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Local IRQs are reset by a normal cpu reset. The initial cpu reset and
the clear cpu reset, as superset of the normal reset, both clear the
IRQs too.
Let's inject an interrupt to a vCPU before calling a reset and see if
it is gone after the reset.
We choose to inject only an emergency interrupt at this point and can
extend the test to other types of IRQs later.
Signed-off-by: Pierre Morel <pmorel@linux.ibm.com>
Signed-off-by: Janosch Frank <frankja@linux.ibm.com>
[minor fixups]
Reviewed-by: Cornelia Huck <cohuck@redhat.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Link: https://lore.kernel.org/r/20200131100205.74720-7-frankja@linux.ibm.com
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
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Test if the registers end up having the correct values after a normal,
initial and clear reset.
Signed-off-by: Janosch Frank <frankja@linux.ibm.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Cornelia Huck <cohuck@redhat.com>
Link: https://lore.kernel.org/r/20200131100205.74720-6-frankja@linux.ibm.com
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
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Add library access to more registers.
Signed-off-by: Janosch Frank <frankja@linux.ibm.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Cornelia Huck <cohuck@redhat.com>
Link: https://lore.kernel.org/r/20200131100205.74720-5-frankja@linux.ibm.com
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace
Pull tracing updates from Steven Rostedt:
- Added new "bootconfig".
This looks for a file appended to initrd to add boot config options,
and has been discussed thoroughly at Linux Plumbers.
Very useful for adding kprobes at bootup.
Only enabled if "bootconfig" is on the real kernel command line.
- Created dynamic event creation.
Merges common code between creating synthetic events and kprobe
events.
- Rename perf "ring_buffer" structure to "perf_buffer"
- Rename ftrace "ring_buffer" structure to "trace_buffer"
Had to rename existing "trace_buffer" to "array_buffer"
- Allow trace_printk() to work withing (some) tracing code.
- Sort of tracing configs to be a little better organized
- Fixed bug where ftrace_graph hash was not being protected properly
- Various other small fixes and clean ups
* tag 'trace-v5.6-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace: (88 commits)
bootconfig: Show the number of nodes on boot message
tools/bootconfig: Show the number of bootconfig nodes
bootconfig: Add more parse error messages
bootconfig: Use bootconfig instead of boot config
ftrace: Protect ftrace_graph_hash with ftrace_sync
ftrace: Add comment to why rcu_dereference_sched() is open coded
tracing: Annotate ftrace_graph_notrace_hash pointer with __rcu
tracing: Annotate ftrace_graph_hash pointer with __rcu
bootconfig: Only load bootconfig if "bootconfig" is on the kernel cmdline
tracing: Use seq_buf for building dynevent_cmd string
tracing: Remove useless code in dynevent_arg_pair_add()
tracing: Remove check_arg() callbacks from dynevent args
tracing: Consolidate some synth_event_trace code
tracing: Fix now invalid var_ref_vals assumption in trace action
tracing: Change trace_boot to use synth_event interface
tracing: Move tracing selftests to bottom of menu
tracing: Move mmio tracer config up with the other tracers
tracing: Move tracing test module configs together
tracing: Move all function tracing configs together
tracing: Documentation for in-kernel synthetic event API
...
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Add a testcase ensuring that the tracing error_log correctly displays
hist trigger parsing errors.
Link: http://lkml.kernel.org/r/62ec58d9aca661cde46ba678e32a938427945e9e.1561743018.git.zanussi@kernel.org
Reviewed-by: Masami Hiramatsu <mhiramat@kernel.org>
Signed-off-by: Tom Zanussi <zanussi@kernel.org>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
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Pull networking fixes from David Miller:
1) Use after free in rxrpc_put_local(), from David Howells.
2) Fix 64-bit division error in mlxsw, from Nathan Chancellor.
3) Make sure we clear various bits of TCP state in response to
tcp_disconnect(). From Eric Dumazet.
4) Fix netlink attribute policy in cls_rsvp, from Eric Dumazet.
5) txtimer must be deleted in stmmac suspend(), from Nicolin Chen.
6) Fix TC queue mapping in bnxt_en driver, from Michael Chan.
7) Various netdevsim fixes from Taehee Yoo (use of uninitialized data,
snapshot panics, stack out of bounds, etc.)
8) cls_tcindex changes hash table size after allocating the table, fix
from Cong Wang.
9) Fix regression in the enforcement of session ID uniqueness in l2tp.
We only have to enforce uniqueness for IP based tunnels not UDP
ones. From Ridge Kennedy.
* git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (46 commits)
gtp: use __GFP_NOWARN to avoid memalloc warning
l2tp: Allow duplicate session creation with UDP
r8152: Add MAC passthrough support to new device
net_sched: fix an OOB access in cls_tcindex
qed: Remove set but not used variable 'p_link'
tc-testing: add missing 'nsPlugin' to basic.json
tc-testing: fix eBPF tests failure on linux fresh clones
net: hsr: fix possible NULL deref in hsr_handle_frame()
netdevsim: remove unused sdev code
netdevsim: use __GFP_NOWARN to avoid memalloc warning
netdevsim: use IS_ERR instead of IS_ERR_OR_NULL for debugfs
netdevsim: fix stack-out-of-bounds in nsim_dev_debugfs_init()
netdevsim: fix panic in nsim_dev_take_snapshot_write()
netdevsim: disable devlink reload when resources are being used
netdevsim: fix using uninitialized resources
bnxt_en: Fix TC queue mapping.
bnxt_en: Fix logic that disables Bus Master during firmware reset.
bnxt_en: Fix RDMA driver failure with SRIOV after firmware reset.
bnxt_en: Refactor logic to re-enable SRIOV after firmware reset detected.
net: stmmac: Delete txtimer in suspend()
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since tdc tests for cls_basic need $DEV1, use 'nsPlugin' so that the
following command can be run without errors:
[root@f31 tc-testing]# ./tdc.py -c basic
Fixes: 4717b05328ba ("tc-testing: Introduced tdc tests for basic filter")
Signed-off-by: Davide Caratti <dcaratti@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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when the following command is done on a fresh clone of the kernel tree,
[root@f31 tc-testing]# ./tdc.py -c bpf
test cases that need to build the eBPF sample program fail systematically,
because 'buildebpfPlugin' is unable to install the kernel headers (i.e, the
'khdr' target fails). Pass the correct environment to 'make', in place of
ENVIR, to allow running these tests.
Fixes: 4c2d39bd40c1 ("tc-testing: use a plugin to build eBPF program")
Signed-off-by: Davide Caratti <dcaratti@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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This commit adds a test for FIN_ACK process races related reconnection
latency spike issues. The issue has described and solved by the
previous commit ("tcp: Reduce SYN resend delay if a suspicous ACK is
received").
The test program is configured with a server and a client process. The
server creates and binds a socket to a port that dynamically allocated,
listen on it, and start a infinite loop. Inside the loop, it accepts
connection, reads 4 bytes from the socket, and closes the connection.
The client is constructed as an infinite loop. Inside the loop, it
creates a socket with LINGER and NODELAY option, connect to the server,
send 4 bytes data, try read some data from server. After the read()
returns, it measure the latency from the beginning of this loop to this
point and if the latency is larger than 1 second (spike), print a
message.
Reviewed-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: SeongJae Park <sjpark@amazon.de>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux
Pull powerpc updates from Michael Ellerman:
"A pretty small batch for us, and apologies for it being a bit late, I
wanted to sneak Christophe's user_access_begin() series in.
Summary:
- Implement user_access_begin() and friends for our platforms that
support controlling kernel access to userspace.
- Enable CONFIG_VMAP_STACK on 32-bit Book3S and 8xx.
- Some tweaks to our pseries IOMMU code to allow SVMs ("secure"
virtual machines) to use the IOMMU.
- Add support for CLOCK_{REALTIME/MONOTONIC}_COARSE to the 32-bit
VDSO, and some other improvements.
- A series to use the PCI hotplug framework to control opencapi
card's so that they can be reset and re-read after flashing a new
FPGA image.
As well as other minor fixes and improvements as usual.
Thanks to: Alastair D'Silva, Alexandre Ghiti, Alexey Kardashevskiy,
Andrew Donnellan, Aneesh Kumar K.V, Anju T Sudhakar, Bai Yingjie, Chen
Zhou, Christophe Leroy, Frederic Barrat, Greg Kurz, Jason A.
Donenfeld, Joel Stanley, Jordan Niethe, Julia Lawall, Krzysztof
Kozlowski, Laurent Dufour, Laurentiu Tudor, Linus Walleij, Michael
Bringmann, Nathan Chancellor, Nicholas Piggin, Nick Desaulniers,
Oliver O'Halloran, Peter Ujfalusi, Pingfan Liu, Ram Pai, Randy Dunlap,
Russell Currey, Sam Bobroff, Sebastian Andrzej Siewior, Shawn
Anastasio, Stephen Rothwell, Steve Best, Sukadev Bhattiprolu, Thiago
Jung Bauermann, Tyrel Datwyler, Vaibhav Jain"
* tag 'powerpc-5.6-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux: (131 commits)
powerpc: configs: Cleanup old Kconfig options
powerpc/configs/skiroot: Enable some more hardening options
powerpc/configs/skiroot: Disable xmon default & enable reboot on panic
powerpc/configs/skiroot: Enable security features
powerpc/configs/skiroot: Update for symbol movement only
powerpc/configs/skiroot: Drop default n CONFIG_CRYPTO_ECHAINIV
powerpc/configs/skiroot: Drop HID_LOGITECH
powerpc/configs: Drop NET_VENDOR_HP which moved to staging
powerpc/configs: NET_CADENCE became NET_VENDOR_CADENCE
powerpc/configs: Drop CONFIG_QLGE which moved to staging
powerpc: Do not consider weak unresolved symbol relocations as bad
powerpc/32s: Fix kasan_early_hash_table() for CONFIG_VMAP_STACK
powerpc: indent to improve Kconfig readability
powerpc: Provide initial documentation for PAPR hcalls
powerpc: Implement user_access_save() and user_access_restore()
powerpc: Implement user_access_begin and friends
powerpc/32s: Prepare prevent_user_access() for user_access_end()
powerpc/32s: Drop NULL addr verification
powerpc/kuap: Fix set direction in allow/prevent_user_access()
powerpc/32s: Fix bad_kuap_fault()
...
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Merge the user_access_begin() series from Christophe. This is based on
a commit from Linus that went into v5.5-rc7.
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Some newer cards supported by aacraid can take up to 40s to recover
after an EEH event. This causes spurious failures in the basic EEH
self-test since the current maximim timeout is only 30s.
Fix the immediate issue by bumping the timeout to a default of 60s,
and allow the wait time to be specified via an environmental variable
(EEH_MAX_WAIT).
Reported-by: Steve Best <sbest@redhat.com>
Suggested-by: Douglas Miller <dougmill@us.ibm.com>
Signed-off-by: Oliver O'Halloran <oohall@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20200122031125.25991-1-oohall@gmail.com
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8xx is now able to support any range length so range tests can be
enabled.
Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/081e3b4e3a17a8ec9fdac46b505e3a29ca15f209.1574790198.git.christophe.leroy@c-s.fr
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Userspace isn't allowed to access certain address ranges, make sure we
actually test that to at least some degree.
This would have caught the recent bug where the SLB fault handler was
incorrectly called on an out-of-range access when using the Radix MMU.
It also would have caught the bug we had in get_region_id() where we
were inserting SLB entries for bad addresses.
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20190520102051.12103-1-mpe@ellerman.id.au
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Pull updates from Andrew Morton:
"Most of -mm and quite a number of other subsystems: hotfixes, scripts,
ocfs2, misc, lib, binfmt, init, reiserfs, exec, dma-mapping, kcov.
MM is fairly quiet this time. Holidays, I assume"
* emailed patches from Andrew Morton <akpm@linux-foundation.org>: (118 commits)
kcov: ignore fault-inject and stacktrace
include/linux/io-mapping.h-mapping: use PHYS_PFN() macro in io_mapping_map_atomic_wc()
execve: warn if process starts with executable stack
reiserfs: prevent NULL pointer dereference in reiserfs_insert_item()
init/main.c: fix misleading "This architecture does not have kernel memory protection" message
init/main.c: fix quoted value handling in unknown_bootoption
init/main.c: remove unnecessary repair_env_string in do_initcall_level
init/main.c: log arguments and environment passed to init
fs/binfmt_elf.c: coredump: allow process with empty address space to coredump
fs/binfmt_elf.c: coredump: delete duplicated overflow check
fs/binfmt_elf.c: coredump: allocate core ELF header on stack
fs/binfmt_elf.c: make BAD_ADDR() unlikely
fs/binfmt_elf.c: better codegen around current->mm
fs/binfmt_elf.c: don't copy ELF header around
fs/binfmt_elf.c: fix ->start_code calculation
fs/binfmt_elf.c: smaller code generation around auxv vector fill
lib/find_bit.c: uninline helper _find_next_bit()
lib/find_bit.c: join _find_next_bit{_le}
uapi: rename ext2_swab() to swab() and share globally in swab.h
lib/scatterlist.c: adjust indentation in __sg_alloc_table
...
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Fix the gup benchmark flags to use the symbolic FOLL_WRITE, instead of a
hard-coded "1" value.
Also, clean up the filtering of gup flags a little, by just doing it
once before issuing any of the get_user_pages*() calls. This makes it
harder to overlook, instead of having little "gup_flags & 1" phrases in
the function calls.
Link: http://lkml.kernel.org/r/20200107224558.2362728-22-jhubbard@nvidia.com
Signed-off-by: John Hubbard <jhubbard@nvidia.com>
Reviewed-by: Ira Weiny <ira.weiny@intel.com>
Cc: Alex Williamson <alex.williamson@redhat.com>
Cc: Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com>
Cc: Björn Töpel <bjorn.topel@intel.com>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: Dan Williams <dan.j.williams@intel.com>
Cc: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Cc: Jan Kara <jack@suse.cz>
Cc: Jason Gunthorpe <jgg@mellanox.com>
Cc: Jason Gunthorpe <jgg@ziepe.ca>
Cc: Jens Axboe <axboe@kernel.dk>
Cc: Jerome Glisse <jglisse@redhat.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Kirill A. Shutemov <kirill@shutemov.name>
Cc: Leon Romanovsky <leonro@mellanox.com>
Cc: Mauro Carvalho Chehab <mchehab@kernel.org>
Cc: Mike Rapoport <rppt@linux.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Pull KVM updates from Paolo Bonzini:
"This is the first batch of KVM changes.
ARM:
- cleanups and corner case fixes.
PPC:
- Bugfixes
x86:
- Support for mapping DAX areas with large nested page table entries.
- Cleanups and bugfixes here too. A particularly important one is a
fix for FPU load when the thread has TIF_NEED_FPU_LOAD. There is
also a race condition which could be used in guest userspace to
exploit the guest kernel, for which the embargo expired today.
- Fast path for IPI delivery vmexits, shaving about 200 clock cycles
from IPI latency.
- Protect against "Spectre-v1/L1TF" (bring data in the cache via
speculative out of bound accesses, use L1TF on the sibling
hyperthread to read it), which unfortunately is an even bigger
whack-a-mole game than SpectreV1.
Sean continues his mission to rewrite KVM. In addition to a sizable
number of x86 patches, this time he contributed a pretty large
refactoring of vCPU creation that affects all architectures but should
not have any visible effect.
s390 will come next week together with some more x86 patches"
* tag 'kvm-5.6-1' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (204 commits)
x86/KVM: Clean up host's steal time structure
x86/KVM: Make sure KVM_VCPU_FLUSH_TLB flag is not missed
x86/kvm: Cache gfn to pfn translation
x86/kvm: Introduce kvm_(un)map_gfn()
x86/kvm: Be careful not to clear KVM_VCPU_FLUSH_TLB bit
KVM: PPC: Book3S PR: Fix -Werror=return-type build failure
KVM: PPC: Book3S HV: Release lock on page-out failure path
KVM: arm64: Treat emulated TVAL TimerValue as a signed 32-bit integer
KVM: arm64: pmu: Only handle supported event counters
KVM: arm64: pmu: Fix chained SW_INCR counters
KVM: arm64: pmu: Don't mark a counter as chained if the odd one is disabled
KVM: arm64: pmu: Don't increment SW_INCR if PMCR.E is unset
KVM: x86: Use a typedef for fastop functions
KVM: X86: Add 'else' to unify fastop and execute call path
KVM: x86: inline memslot_valid_for_gpte
KVM: x86/mmu: Use huge pages for DAX-backed files
KVM: x86/mmu: Remove lpage_is_disallowed() check from set_spte()
KVM: x86/mmu: Fold max_mapping_level() into kvm_mmu_hugepage_adjust()
KVM: x86/mmu: Zap any compound page when collapsing sptes
KVM: x86/mmu: Remove obsolete gfn restoration in FNAME(fetch)
...
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The mis-spelling is found by checkpatch.pl, so fix them.
Signed-off-by: Xiaoyao Li <xiaoyao.li@intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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Rename the NMI-window exiting related definitions to match the latest
Intel SDM. No functional changes.
Signed-off-by: Xiaoyao Li <xiaoyao.li@intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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Rename interrupt-windown exiting related definitions to match the
latest Intel SDM. No functional changes.
Signed-off-by: Xiaoyao Li <xiaoyao.li@intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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Pull drm updates from Davbe Airlie:
"This is the main pull request for graphics for 5.6. Usual selection of
changes all over.
I've got one outstanding vmwgfx pull that touches mm so kept it
separate until after all of this lands. I'll try and get it to you
soon after this, but it might be early next week (nothing wrong with
code, just my schedule is messy)
This also hits a lot of fbdev drivers with some cleanups.
Other notables:
- vulkan timeline semaphore support added to syncobjs
- nouveau turing secureboot/graphics support
- Displayport MST display stream compression support
Detailed summary:
uapi:
- dma-buf heaps added (and fixed)
- command line add support for panel oreientation
- command line allow overriding penguin count
drm:
- mipi dsi definition updates
- lockdep annotations for dma_resv
- remove dma-buf kmap/kunmap support
- constify fb_ops in all fbdev drivers
- MST fix for daisy chained hotplug-
- CTA-861-G modes with VIC >= 193 added
- fix drm_panel_of_backlight export
- LVDS decoder support
- more device based logging support
- scanline alighment for dumb buffers
- MST DSC helpers
scheduler:
- documentation fixes
- job distribution improvements
panel:
- Logic PD type 28 panel support
- Jimax8729d MIPI-DSI
- igenic JZ4770
- generic DSI devicetree bindings
- sony acx424AKP panel
- Leadtek LTK500HD1829
- xinpeng XPP055C272
- AUO B116XAK01
- GiantPlus GPM940B0
- BOE NV140FHM-N49
- Satoz SAT050AT40H12R2
- Sharp LS020B1DD01D panels.
ttm:
- use blocking WW lock
i915:
- hw/uapi state separation
- Lock annotation improvements
- selftest improvements
- ICL/TGL DSI VDSC support
- VBT parsing improvments
- Display refactoring
- DSI updates + fixes
- HDCP 2.2 for CFL
- CML PCI ID fixes
- GLK+ fbc fix
- PSR fixes
- GEN/GT refactor improvments
- DP MST fixes
- switch context id alloc to xarray
- workaround updates
- LMEM debugfs support
- tiled monitor fixes
- ICL+ clock gating programming removed
- DP MST disable sequence fixed
- LMEM discontiguous object maps
- prefaulting for discontiguous objects
- use LMEM for dumb buffers if possible
- add LMEM mmap support
amdgpu:
- enable sync object timelines for vulkan
- MST atomic routines
- enable MST DSC support
- add DMCUB display microengine support
- DC OEM i2c support
- Renoir DC fixes
- Initial HDCP 2.x support
- BACO support for Arcturus
- Use BACO for runtime PM power save
- gfxoff on navi10
- gfx10 golden updates and fixes
- DCN support on POWER
- GFXOFF for raven1 refresh
- MM engine idle handlers cleanup
- 10bpc EDP panel fixes
- renoir watermark fixes
- SR-IOV fixes
- Arcturus VCN fixes
- GDDR6 training fixes
- freesync fixes
- Pollock support
amdkfd:
- unify more codepath with amdgpu
- use KIQ to setup HIQ rather than MMIO
radeon:
- fix vma fault handler race
- PPC DMA fix
- register check fixes for r100/r200
nouveau:
- mmap_sem vs dma_resv fix
- rewrite the ACR secure boot code for Turing
- TU10x graphics engine support (TU11x pending)
- Page kind mapping for turing
- 10-bit LUT support
- GP10B Tegra fixes
- HD audio regression fix
hisilicon/hibmc:
- use generic fbdev code and helpers
rockchip:
- dsi/px30 support
virtio:
- fb damage support
- static some functions
vc4:
- use dma_resv lock wrappers
msm:
- use dma_resv lock wrappers
- sc7180 display + DSI support
- a618 support
- UBWC support improvements
vmwgfx:
- updates + new logging uapi
exynos:
- enable/disable callback cleanups
etnaviv:
- use dma_resv lock wrappers
atmel-hlcdc:
- clock fixes
mediatek:
- cmdq support
- non-smooth cursor fixes
- ctm property support
sun4i:
- suspend support
- A64 mipi dsi support
rcar-du:
- Color management module support
- LVDS encoder dual-link support
- R8A77980 support
analogic:
- add support for an6345
ast:
- atomic modeset support
- primary plane garbage fix
arcgpu:
- fixes for fourcc handling
tegra:
- minor fixes and improvments
mcde:
- vblank support
meson:
- OSD1 plane AFBC commit
gma500:
- add pageflip support
- reomve global drm_dev
komeda:
- tweak debugfs output
- d32 support
- runtime PM suppotr
udl:
- use generic shmem helpers
- cleanup and fixes"
* tag 'drm-next-2020-01-30' of git://anongit.freedesktop.org/drm/drm: (1998 commits)
drm/nouveau/fb/gp102-: allow module to load even when scrubber binary is missing
drm/nouveau/acr: return error when registering LSF if ACR not supported
drm/nouveau/disp/gv100-: not all channel types support reporting error codes
drm/nouveau/disp/nv50-: prevent oops when no channel method map provided
drm/nouveau: support synchronous pushbuf submission
drm/nouveau: signal pending fences when channel has been killed
drm/nouveau: reject attempts to submit to dead channels
drm/nouveau: zero vma pointer even if we only unreference it rather than free
drm/nouveau: Add HD-audio component notifier support
drm/nouveau: fix build error without CONFIG_IOMMU_API
drm/nouveau/kms/nv04: remove set but not used variable 'width'
drm/nouveau/kms/nv50: remove set but not unused variable 'nv_connector'
drm/nouveau/mmu: fix comptag memory leak
drm/nouveau/gr/gp10b: Use gp100_grctx and gp100_gr_zbc
drm/nouveau/pmu/gm20b,gp10b: Fix Falcon bootstrapping
drm/exynos: Rename Exynos to lowercase
drm/exynos: change callback names
drm/mst: Don't do atomic checks over disabled managers
drm/amdgpu: add the lost mutex_init back
drm/amd/display: skip opp blank or unblank if test pattern enabled
...
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msm needs 5.5-rc4, go to the latest.
Signed-off-by: Dave Airlie <airlied@redhat.com>
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git://anongit.freedesktop.org/drm/drm-misc into drm-next
drm-misc-next for v5.6:
UAPI Changes:
- Commandline parser: Add support for panel orientation, and per-mode options.
- Fix IOCTL naming for dma-buf heaps.
Cross-subsystem Changes:
- Rename DMA_HEAP_IOC_ALLOC to DMA_HEAP_IOCTL_ALLOC before it becomes abi.
- Change DMA-BUF system-heap's name to system.
- Fix leak in error handling in dma_heap_ioctl(), and make a symbol static.
- Fix udma-buf cpu access.
- Fix ti devicetree bindings.
Core Changes:
- Add CTA-861-G modes with VIC >= 193.
- Change error handling and remove bug_on in *drm_dev_init.
- Export drm_panel_of_backlight() correctly once more.
- Add support for lvds decoders.
- Convert drm/client and drm/(gem-,)fb-helper to drm-device based logging and update logging todo.
Driver Changes:
- Add support for dsi/px30 to rockchip.
- Add fb damage support to virtio.
- Use dma_resv locking wrappers in vc4, msm, etnaviv.
- Make functions in virtio static, and perform some simplifications.
- Add suspend support to sun4i.
- Add A64 mipi dsi support to sun4i.
- Add runtime pm suspend to komeda.
- Associated driver fixes.
Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/efc11139-1653-86bc-1b0f-0aefde219850@linux.intel.com
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This is more consistent with the DMA and DRM frameworks convention. This
patch is only a name change, no logic is changed.
Signed-off-by: Andrew F. Davis <afd@ti.com>
Acked-by: John Stultz <john.stultz@linaro.org>
Signed-off-by: Sumit Semwal <sumit.semwal@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20191216133405.1001-2-afd@ti.com
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git://anongit.freedesktop.org/drm/drm-misc into drm-next
drm-misc-next for v5.6:
UAPI Changes:
- Add support for DMA-BUF HEAPS.
Cross-subsystem Changes:
- mipi dsi definition updates, pulled into drm-intel as well.
- Add lockdep annotations for dma_resv vs mmap_sem and fs_reclaim.
- Remove support for dma-buf kmap/kunmap.
- Constify fb_ops in all fbdev drivers, including drm drivers and drm-core, and media as well.
Core Changes:
- Small cleanups to ttm.
- Fix SCDC definition.
- Assorted cleanups to core.
- Add todo to remove load/unload hooks, and use generic fbdev emulation.
- Assorted documentation updates.
- Use blocking ww lock in ttm fault handler.
- Remove drm_fb_helper_fbdev_setup/teardown.
- Warning fixes with W=1 for atomic.
- Use drm_debug_enabled() instead of drm_debug flag testing in various drivers.
- Fallback to nontiled mode in fbdev emulation when not all tiles are present. (Later on reverted)
- Various kconfig indentation fixes in core and drivers.
- Fix freeing transactions in dp-mst correctly.
- Sean Paul is steping down as core maintainer. :-(
- Add lockdep annotations for atomic locks vs dma-resv.
- Prevent use-after-free for a bad job in drm_scheduler.
- Fill out all block sizes in the P01x and P210 definitions.
- Avoid division by zero in drm/rect, and fix bounds.
- Add drm/rect selftests.
- Add aspect ratio and alternate clocks for HDMI 4k modes.
- Add todo for drm_framebuffer_funcs and fb_create cleanup.
- Drop DRM_AUTH for prime import/export ioctls.
- Clear DP-MST payload id tables downstream when initializating.
- Fix for DSC throughput definition.
- Add extra FEC definitions.
- Fix fake offset in drm_gem_object_funs.mmap.
- Stop using encoder->bridge in core directly
- Handle bridge chaining slightly better.
- Add backlight support to drm/panel, and use it in many panel drivers.
- Increase max number of y420 modes from 128 to 256, as preparation to add the new modes.
Driver Changes:
- Small fixes all over.
- Fix documentation in vkms.
- Fix mmap_sem vs dma_resv in nouveau.
- Small cleanup in komeda.
- Add page flip support in gma500 for psb/cdv.
- Add ddc symlink in the connector sysfs directory for many drivers.
- Add support for analogic an6345, and fix small bugs in it.
- Add atomic modesetting support to ast.
- Fix radeon fault handler VMA race.
- Switch udl to use generic shmem helpers.
- Unconditional vblank handling for mcde.
- Miscellaneous fixes to mcde.
- Tweak debug output from komeda using debugfs.
- Add gamma and color transform support to komeda for DOU-IPS.
- Add support for sony acx424AKP panel.
- Various small cleanups to gma500.
- Use generic fbdev emulation in udl, and replace udl_framebuffer with generic implementation.
- Add support for Logic PD Type 28 panel.
- Use drm_panel_* wrapper functions in exynos/tegra/msm.
- Add devicetree bindings for generic DSI panels.
- Don't include drm_pci.h directly in many drivers.
- Add support for begin/end_cpu_access in udmabuf.
- Stop using drm_get_pci_dev in gma500 and mga200.
- Fixes to UDL damage handling, and use dma_buf_begin/end_cpu_access.
- Add devfreq thermal support to panfrost.
- Fix hotplug with daisy chained monitors by removing VCPI when disabling topology manager.
- meson: Add support for OSD1 plane AFBC commit.
- Stop displaying garbage when toggling ast primary plane on/off.
- More cleanups and fixes to UDL.
- Add D32 suport to komeda.
- Remove globle copy of drm_dev in gma500.
- Add support for Boe Himax8279d MIPI-DSI LCD panel.
- Add support for ingenic JZ4770 panel.
- Small null pointer deference fix in ingenic.
- Remove support for the special tfp420 driver, as there is a generic way to do it.
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
From: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/ba73535a-9334-5302-2e1f-5208bd7390bd@linux.intel.com
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Add very trivial allocation and import test for dma-heaps,
utilizing the vgem driver as a test importer.
A good chunk of this code taken from:
tools/testing/selftests/android/ion/ionmap_test.c
Originally by Laura Abbott <labbott@redhat.com>
Cc: Benjamin Gaignard <benjamin.gaignard@linaro.org>
Cc: Sumit Semwal <sumit.semwal@linaro.org>
Cc: Liam Mark <lmark@codeaurora.org>
Cc: Pratik Patel <pratikp@codeaurora.org>
Cc: Brian Starkey <Brian.Starkey@arm.com>
Cc: Vincent Donnefort <Vincent.Donnefort@arm.com>
Cc: Sudipto Paul <Sudipto.Paul@arm.com>
Cc: Andrew F. Davis <afd@ti.com>
Cc: Christoph Hellwig <hch@infradead.org>
Cc: Chenbo Feng <fengc@google.com>
Cc: Alistair Strachan <astrachan@google.com>
Cc: Hridya Valsaraju <hridya@google.com>
Cc: Sandeep Patil <sspatil@google.com>
Cc: Hillf Danton <hdanton@sina.com>
Cc: Dave Airlie <airlied@gmail.com>
Cc: dri-devel@lists.freedesktop.org
Reviewed-by: Benjamin Gaignard <benjamin.gaignard@linaro.org>
Reviewed-by: Brian Starkey <brian.starkey@arm.com>
Acked-by: Sandeep Patil <sspatil@android.com>
Acked-by: Laura Abbott <labbott@redhat.com>
Tested-by: Ayan Kumar Halder <ayan.halder@arm.com>
Signed-off-by: John Stultz <john.stultz@linaro.org>
Signed-off-by: Sumit Semwal <sumit.semwal@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20191203172641.66642-6-john.stultz@linaro.org
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This reverts commit ab87cc9754cdeb373c8ac030ac7aed92f450b767.
This patchset doesn't meet the UAPI requirements set out in [1] for the DRM
subsystem. Once the userspace component is reviewed and ready for merge
we can try again.
[1]- https://01.org/linuxgraphics/gfx-docs/drm/gpu/drm-uapi.html#open-source-userspace-requirements
Fixes: ab87cc9754cd ("kselftests: Add dma-heap test")
Cc: Benjamin Gaignard <benjamin.gaignard@linaro.org>
Cc: Sumit Semwal <sumit.semwal@linaro.org>
Cc: Liam Mark <lmark@codeaurora.org>
Cc: Pratik Patel <pratikp@codeaurora.org>
Cc: Brian Starkey <Brian.Starkey@arm.com>
Cc: Vincent Donnefort <Vincent.Donnefort@arm.com>
Cc: Sudipto Paul <Sudipto.Paul@arm.com>
Cc: Andrew F. Davis <afd@ti.com>
Cc: Christoph Hellwig <hch@infradead.org>
Cc: Chenbo Feng <fengc@google.com>
Cc: Alistair Strachan <astrachan@google.com>
Cc: Hridya Valsaraju <hridya@google.com>
Cc: Hillf Danton <hdanton@sina.com>
Cc: dri-devel@lists.freedesktop.org
Cc: Brian Starkey <brian.starkey@arm.com>
Cc: Laura Abbott <labbott@redhat.com>
Cc: John Stultz <john.stultz@linaro.org>
Cc: Sean Paul <seanpaul@chromium.org>
Acked-by: David Airlie <airlied@linux.ie>
Signed-off-by: Sean Paul <sean@poorly.run>
Link: https://patchwork.freedesktop.org/patch/msgid/20191030203003.101156-2-sean@poorly.run
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Add very trivial allocation and import test for dma-heaps,
utilizing the vgem driver as a test importer.
A good chunk of this code taken from:
tools/testing/selftests/android/ion/ionmap_test.c
Originally by Laura Abbott <labbott@redhat.com>
Cc: Benjamin Gaignard <benjamin.gaignard@linaro.org>
Cc: Sumit Semwal <sumit.semwal@linaro.org>
Cc: Liam Mark <lmark@codeaurora.org>
Cc: Pratik Patel <pratikp@codeaurora.org>
Cc: Brian Starkey <Brian.Starkey@arm.com>
Cc: Vincent Donnefort <Vincent.Donnefort@arm.com>
Cc: Sudipto Paul <Sudipto.Paul@arm.com>
Cc: Andrew F. Davis <afd@ti.com>
Cc: Christoph Hellwig <hch@infradead.org>
Cc: Chenbo Feng <fengc@google.com>
Cc: Alistair Strachan <astrachan@google.com>
Cc: Hridya Valsaraju <hridya@google.com>
Cc: Hillf Danton <hdanton@sina.com>
Cc: dri-devel@lists.freedesktop.org
Reviewed-by: Benjamin Gaignard <benjamin.gaignard@linaro.org>
Reviewed-by: Brian Starkey <brian.starkey@arm.com>
Acked-by: Laura Abbott <labbott@redhat.com>
Tested-by: Ayan Kumar Halder <ayan.halder@arm.com>
Signed-off-by: John Stultz <john.stultz@linaro.org>
Signed-off-by: Sumit Semwal <sumit.semwal@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20191021190310.85221-6-john.stultz@linaro.org
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git://git.kernel.org/pub/scm/linux/kernel/git/brauner/linux
Pull thread management updates from Christian Brauner:
"Sargun Dhillon over the last cycle has worked on the pidfd_getfd()
syscall.
This syscall allows for the retrieval of file descriptors of a process
based on its pidfd. A task needs to have ptrace_may_access()
permissions with PTRACE_MODE_ATTACH_REALCREDS (suggested by Oleg and
Andy) on the target.
One of the main use-cases is in combination with seccomp's user
notification feature. As a reminder, seccomp's user notification
feature was made available in v5.0. It allows a task to retrieve a
file descriptor for its seccomp filter. The file descriptor is usually
handed of to a more privileged supervising process. The supervisor can
then listen for syscall events caught by the seccomp filter of the
supervisee and perform actions in lieu of the supervisee, usually
emulating syscalls. pidfd_getfd() is needed to expand its uses.
There are currently two major users that wait on pidfd_getfd() and one
future user:
- Netflix, Sargun said, is working on a service mesh where users
should be able to connect to a dns-based VIP. When a user connects
to e.g. 1.2.3.4:80 that runs e.g. service "foo" they will be
redirected to an envoy process. This service mesh uses seccomp user
notifications and pidfd to intercept all connect calls and instead
of connecting them to 1.2.3.4:80 connects them to e.g.
127.0.0.1:8080.
- LXD uses the seccomp notifier heavily to intercept and emulate
mknod() and mount() syscalls for unprivileged containers/processes.
With pidfd_getfd() more uses-cases e.g. bridging socket connections
will be possible.
- The patchset has also seen some interest from the browser corner.
Right now, Firefox is using a SECCOMP_RET_TRAP sandbox managed by a
broker process. In the future glibc will start blocking all signals
during dlopen() rendering this type of sandbox impossible. Hence,
in the future Firefox will switch to a seccomp-user-nofication
based sandbox which also makes use of file descriptor retrieval.
The thread for this can be found at
https://sourceware.org/ml/libc-alpha/2019-12/msg00079.html
With pidfd_getfd() it is e.g. possible to bridge socket connections
for the supervisee (binding to a privileged port) and taking actions
on file descriptors on behalf of the supervisee in general.
Sargun's first version was using an ioctl on pidfds but various people
pushed for it to be a proper syscall which he duely implemented as
well over various review cycles. Selftests are of course included.
I've also added instructions how to deal with merge conflicts below.
There's also a small fix coming from the kernel mentee project to
correctly annotate struct sighand_struct with __rcu to fix various
sparse warnings. We've received a few more such fixes and even though
they are mostly trivial I've decided to postpone them until after -rc1
since they came in rather late and I don't want to risk introducing
build warnings.
Finally, there's a new prctl() command PR_{G,S}ET_IO_FLUSHER which is
needed to avoid allocation recursions triggerable by storage drivers
that have userspace parts that run in the IO path (e.g. dm-multipath,
iscsi, etc). These allocation recursions deadlock the device.
The new prctl() allows such privileged userspace components to avoid
allocation recursions by setting the PF_MEMALLOC_NOIO and
PF_LESS_THROTTLE flags. The patch carries the necessary acks from the
relevant maintainers and is routed here as part of prctl()
thread-management."
* tag 'threads-v5.6' of git://git.kernel.org/pub/scm/linux/kernel/git/brauner/linux:
prctl: PR_{G,S}ET_IO_FLUSHER to support controlling memory reclaim
sched.h: Annotate sighand_struct with __rcu
test: Add test for pidfd getfd
arch: wire up pidfd_getfd syscall
pid: Implement pidfd_getfd syscall
vfs, fdtable: Add fget_task helper
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The following tests:
* Fetch FD, and then compare via kcmp
* Make sure getfd can be blocked by blocking ptrace_may_access
* Making sure fetching bad FDs fails
* Make sure trying to set flags to non-zero results in an EINVAL
Signed-off-by: Sargun Dhillon <sargun@sargun.me>
Acked-by: Christian Brauner <christian.brauner@ubuntu.com>
Link: https://lore.kernel.org/r/20200107175927.4558-5-sargun@sargun.me
Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest
Pull Kselftest update from Shuah Khan:
"This Kselftest update consists of several fixes to framework and
individual tests.
In addition, it enables LKDTM tests adding lkdtm target to kselftest
Makefile"
* tag 'linux-kselftest-5.6-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest:
selftests/ftrace: fix glob selftest
selftests: settings: tests can be in subsubdirs
kselftest: Minimise dependency of get_size on C library interfaces
selftests/livepatch: Remove unused local variable in set_ftrace_enabled()
selftests/livepatch: Replace set_dynamic_debug() with setup_config() in README
selftests/lkdtm: Add tests for LKDTM targets
selftests: Uninitialized variable in test_cgcore_proc_migration()
selftests: fix build behaviour on targets' failures
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test.d/ftrace/func-filter-glob.tc is failing on s390 because it has
ARCH_INLINE_SPIN_LOCK and friends set to 'y'. So the usual
__raw_spin_lock symbol isn't in the ftrace function list. Change
'*aw*lock' to '*spin*lock' which would hopefully match some of the
locking functions on all platforms.
Reviewed-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Signed-off-by: Sven Schnelle <svens@linux.ibm.com>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
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Commit 852c8cbf34d3 ("selftests/kselftest/runner.sh: Add 45 second
timeout per test") adds support for a new per-test-directory "settings"
file. But this only works for tests not in a sub-subdirectories, e.g.
- tools/testing/selftests/rtc (rtc) is OK,
- tools/testing/selftests/net/mptcp (net/mptcp) is not.
We have to increase the timeout for net/mptcp tests which are not
upstreamed yet but this fix is valid for other tests if they need to add
a "settings" file, see the full list with:
tools/testing/selftests/*/*/**/Makefile
Note that this patch changes the text header message printed at the end
of the execution but this text is modified only for the tests that are
in sub-subdirectories, e.g.
ok 1 selftests: net/mptcp: mptcp_connect.sh
Before we had:
ok 1 selftests: mptcp: mptcp_connect.sh
But showing the full target name is probably better, just in case a
subsubdir has the same name as another one in another subdirectory.
Fixes: 852c8cbf34d3 (selftests/kselftest/runner.sh: Add 45 second timeout per test)
Signed-off-by: Matthieu Baerts <matthieu.baerts@tessares.net>
Reviewed-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
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