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2017-02-22userfaultfd: selftest: test UFFDIO_ZEROPAGE on all memory typesAndrea Arcangeli1-1/+81
This will verify -EINVAL is returned with hugetlbfs/shmem and it'll do a functional test of UFFDIO_ZEROPAGE on anonymous memory. Link: http://lkml.kernel.org/r/20161216144821.5183-42-aarcange@redhat.com Signed-off-by: Andrea Arcangeli <aarcange@redhat.com> Cc: "Dr. David Alan Gilbert" <dgilbert@redhat.com> Cc: Hillf Danton <hillf.zj@alibaba-inc.com> Cc: Michael Rapoport <RAPOPORT@il.ibm.com> Cc: Mike Kravetz <mike.kravetz@oracle.com> Cc: Mike Rapoport <rppt@linux.vnet.ibm.com> Cc: Pavel Emelyanov <xemul@parallels.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2017-02-22userfaultfd: non-cooperative: selftest: add test for FORK, MADVDONTNEED and REMAP eventsMike Rapoport1-12/+163
Add test for userfaultfd events used in non-cooperative scenario when the process that monitors the userfaultfd and handles user faults is not the same process that causes the page faults. Link: http://lkml.kernel.org/r/20161216144821.5183-41-aarcange@redhat.com Signed-off-by: Mike Rapoport <rppt@linux.vnet.ibm.com> Signed-off-by: Andrea Arcangeli <aarcange@redhat.com> Cc: "Dr. David Alan Gilbert" <dgilbert@redhat.com> Cc: Hillf Danton <hillf.zj@alibaba-inc.com> Cc: Michael Rapoport <RAPOPORT@il.ibm.com> Cc: Mike Kravetz <mike.kravetz@oracle.com> Cc: Pavel Emelyanov <xemul@parallels.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2017-02-22userfaultfd: non-cooperative: selftest: add ufd parameter to copy_pageMike Rapoport1-5/+5
With future addition of event tests, copy_page will be called with different userfault file descriptors Link: http://lkml.kernel.org/r/20161216144821.5183-40-aarcange@redhat.com Signed-off-by: Mike Rapoport <rppt@linux.vnet.ibm.com> Signed-off-by: Andrea Arcangeli <aarcange@redhat.com> Cc: "Dr. David Alan Gilbert" <dgilbert@redhat.com> Cc: Hillf Danton <hillf.zj@alibaba-inc.com> Cc: Michael Rapoport <RAPOPORT@il.ibm.com> Cc: Mike Kravetz <mike.kravetz@oracle.com> Cc: Pavel Emelyanov <xemul@parallels.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2017-02-22userfaultfd: non-cooperative: selftest: introduce userfaultfd_openMike Rapoport1-16/+25
userfaultfd_open will be needed by the non cooperative selftest. Link: http://lkml.kernel.org/r/20161216144821.5183-39-aarcange@redhat.com Signed-off-by: Mike Rapoport <rppt@linux.vnet.ibm.com> Signed-off-by: Andrea Arcangeli <aarcange@redhat.com> Cc: "Dr. David Alan Gilbert" <dgilbert@redhat.com> Cc: Hillf Danton <hillf.zj@alibaba-inc.com> Cc: Michael Rapoport <RAPOPORT@il.ibm.com> Cc: Mike Kravetz <mike.kravetz@oracle.com> Cc: Pavel Emelyanov <xemul@parallels.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2017-02-22userfaultfd: shmem: add userfaultfd_shmem testMike Rapoport3-2/+50
The test verifies that anonymous shared mapping can be used with userfault using the existing testing method. The shared memory area is allocated using mmap(..., MAP_SHARED | MAP_ANONYMOUS, ...) and released using madvise(MADV_REMOVE) Link: http://lkml.kernel.org/r/20161216144821.5183-35-aarcange@redhat.com Signed-off-by: Mike Rapoport <rppt@linux.vnet.ibm.com> Signed-off-by: Andrea Arcangeli <aarcange@redhat.com> Cc: "Dr. David Alan Gilbert" <dgilbert@redhat.com> Cc: Hillf Danton <hillf.zj@alibaba-inc.com> Cc: Michael Rapoport <RAPOPORT@il.ibm.com> Cc: Mike Kravetz <mike.kravetz@oracle.com> Cc: Pavel Emelyanov <xemul@parallels.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2017-02-22userfaultfd: shmem: allow registration of shared memory rangesMike Rapoport1-1/+1
Expand the userfaultfd_register/unregister routines to allow shared memory VMAs. Currently, there is no UFFDIO_ZEROPAGE and write-protection support for shared memory VMAs, which is reflected in ioctl methods supported by uffdio_register. Link: http://lkml.kernel.org/r/20161216144821.5183-34-aarcange@redhat.com Signed-off-by: Mike Rapoport <rppt@linux.vnet.ibm.com> Signed-off-by: Andrea Arcangeli <aarcange@redhat.com> Cc: "Dr. David Alan Gilbert" <dgilbert@redhat.com> Cc: Hillf Danton <hillf.zj@alibaba-inc.com> Cc: Michael Rapoport <RAPOPORT@il.ibm.com> Cc: Mike Kravetz <mike.kravetz@oracle.com> Cc: Pavel Emelyanov <xemul@parallels.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2017-02-22userfaultfd: hugetlbfs: add userfaultfd_hugetlb testMike Kravetz3-17/+161
Test userfaultfd hugetlb functionality by using the existing testing method (in userfaultfd.c). Instead of an anonymous memeory, a hugetlbfs file is mmap'ed private. In this way fallocate hole punch can be used to release pages. This is because madvise(MADV_DONTNEED) is not supported for huge pages. Use the same file, but create wrappers for allocating ranges and releasing pages. Compile userfaultfd.c with HUGETLB_TEST defined to produce an executable to test userfaultfd hugetlb functionality. Link: http://lkml.kernel.org/r/20161216144821.5183-23-aarcange@redhat.com Signed-off-by: Mike Kravetz <mike.kravetz@oracle.com> Signed-off-by: Andrea Arcangeli <aarcange@redhat.com> Cc: "Dr. David Alan Gilbert" <dgilbert@redhat.com> Cc: Hillf Danton <hillf.zj@alibaba-inc.com> Cc: Michael Rapoport <RAPOPORT@il.ibm.com> Cc: Mike Rapoport <rppt@linux.vnet.ibm.com> Cc: Pavel Emelyanov <xemul@parallels.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2017-02-22Merge tag 'driver-core-4.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-coreLinus Torvalds1-5/+20
Pull driver core updates from Greg KH: "Here is the "small" driver core patches for 4.11-rc1. Not much here, some firmware documentation and self-test updates, a debugfs code formatting issue, and a new feature for call_usermodehelper to make it more robust on systems that want to lock it down in a more secure way. All of these have been linux-next for a while now with no reported issues" * tag 'driver-core-4.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: kernfs: handle null pointers while printing node name and path Introduce STATIC_USERMODEHELPER to mediate call_usermodehelper() Make static usermode helper binaries constant kmod: make usermodehelper path a const string firmware: revamp firmware documentation selftests: firmware: send expected errors to /dev/null selftests: firmware: only modprobe if driver is missing platform: Print the resource range if device failed to claim kref: prefer atomic_inc_not_zero to atomic_add_unless debugfs: improve formatting of debugfs_real_fops()
2017-02-22Merge tag 'char-misc-4.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-miscLinus Torvalds3-100/+225
Pull char/misc driver updates from Greg KH: "Here is the big char/misc driver patchset for 4.11-rc1. Lots of different driver subsystems updated here: rework for the hyperv subsystem to handle new platforms better, mei and w1 and extcon driver updates, as well as a number of other "minor" driver updates. All of these have been in linux-next for a while with no reported issues" * tag 'char-misc-4.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (169 commits) goldfish: Sanitize the broken interrupt handler x86/platform/goldfish: Prevent unconditional loading vmbus: replace modulus operation with subtraction vmbus: constify parameters where possible vmbus: expose hv_begin/end_read vmbus: remove conditional locking of vmbus_write vmbus: add direct isr callback mode vmbus: change to per channel tasklet vmbus: put related per-cpu variable together vmbus: callback is in softirq not workqueue binder: Add support for file-descriptor arrays binder: Add support for scatter-gather binder: Add extra size to allocator binder: Refactor binder_transact() binder: Support multiple /dev instances binder: Deal with contexts in debugfs binder: Support multiple context managers binder: Split flat_binder_object auxdisplay: ht16k33: remove private workqueue auxdisplay: ht16k33: rework input device initialization ...
2017-02-22Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-nextLinus Torvalds10-294/+2465
Pull networking updates from David Miller: "Highlights: 1) Support TX_RING in AF_PACKET TPACKET_V3 mode, from Sowmini Varadhan. 2) Simplify classifier state on sk_buff in order to shrink it a bit. From Willem de Bruijn. 3) Introduce SIPHASH and it's usage for secure sequence numbers and syncookies. From Jason A. Donenfeld. 4) Reduce CPU usage for ICMP replies we are going to limit or suppress, from Jesper Dangaard Brouer. 5) Introduce Shared Memory Communications socket layer, from Ursula Braun. 6) Add RACK loss detection and allow it to actually trigger fast recovery instead of just assisting after other algorithms have triggered it. From Yuchung Cheng. 7) Add xmit_more and BQL support to mvneta driver, from Simon Guinot. 8) skb_cow_data avoidance in esp4 and esp6, from Steffen Klassert. 9) Export MPLS packet stats via netlink, from Robert Shearman. 10) Significantly improve inet port bind conflict handling, especially when an application is restarted and changes it's setting of reuseport. From Josef Bacik. 11) Implement TX batching in vhost_net, from Jason Wang. 12) Extend the dummy device so that VF (virtual function) features, such as configuration, can be more easily tested. From Phil Sutter. 13) Avoid two atomic ops per page on x86 in bnx2x driver, from Eric Dumazet. 14) Add new bpf MAP, implementing a longest prefix match trie. From Daniel Mack. 15) Packet sample offloading support in mlxsw driver, from Yotam Gigi. 16) Add new aquantia driver, from David VomLehn. 17) Add bpf tracepoints, from Daniel Borkmann. 18) Add support for port mirroring to b53 and bcm_sf2 drivers, from Florian Fainelli. 19) Remove custom busy polling in many drivers, it is done in the core networking since 4.5 times. From Eric Dumazet. 20) Support XDP adjust_head in virtio_net, from John Fastabend. 21) Fix several major holes in neighbour entry confirmation, from Julian Anastasov. 22) Add XDP support to bnxt_en driver, from Michael Chan. 23) VXLAN offloads for enic driver, from Govindarajulu Varadarajan. 24) Add IPVTAP driver (IP-VLAN based tap driver) from Sainath Grandhi. 25) Support GRO in IPSEC protocols, from Steffen Klassert" * git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next: (1764 commits) Revert "ath10k: Search SMBIOS for OEM board file extension" net: socket: fix recvmmsg not returning error from sock_error bnxt_en: use eth_hw_addr_random() bpf: fix unlocking of jited image when module ronx not set arch: add ARCH_HAS_SET_MEMORY config net: napi_watchdog() can use napi_schedule_irqoff() tcp: Revert "tcp: tcp_probe: use spin_lock_bh()" net/hsr: use eth_hw_addr_random() net: mvpp2: enable building on 64-bit platforms net: mvpp2: switch to build_skb() in the RX path net: mvpp2: simplify MVPP2_PRS_RI_* definitions net: mvpp2: fix indentation of MVPP2_EXT_GLOBAL_CTRL_DEFAULT net: mvpp2: remove unused register definitions net: mvpp2: simplify mvpp2_bm_bufs_add() net: mvpp2: drop useless fields in mvpp2_bm_pool and related code net: mvpp2: remove unused 'tx_skb' field of 'struct mvpp2_tx_queue' net: mvpp2: release reference to txq_cpu[] entry after unmapping net: mvpp2: handle too large value in mvpp2_rx_time_coal_set() net: mvpp2: handle too large value handling in mvpp2_rx_pkts_coal_set() net: mvpp2: remove useless arguments in mvpp2_rx_{pkts, time}_coal_set ...
2017-02-20Merge branch 'x86-mm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds1-1/+1
Pull x86 mm updates from Ingo Molnar: "A laundry list of changes: KASAN improvements/fixes for ptdump, a self-test fix, PAT cleanup and wbinvd() avoidance, removal of stale code and documentation updates" * 'x86-mm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/mm/ptdump: Add address marker for KASAN shadow region x86/mm/ptdump: Optimize check for W+X mappings for CONFIG_KASAN=y x86/mm/pat: Use rb_entry() x86/mpx: Re-add MPX to selftests Makefile x86/mm: Remove CONFIG_DEBUG_NX_TEST x86/mm/cpa: Avoid wbinvd() for PREEMPT x86/mm: Improve documentation for low-level device I/O functions
2017-02-20Merge branch 'x86-asm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds2-1/+196
Pull x86 asm update from Ingo Molnar: "This adds a new SYSRET testcase" * 'x86-asm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: selftests/x86: Add a selftest for SYSRET to noncanonical addresses
2017-02-20Merge branch 'locking-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds4-0/+18
Pull locking updates from Ingo Molnar: "The main changes in this cycle were: - Implement wraparound-safe refcount_t and kref_t types based on generic atomic primitives (Peter Zijlstra) - Improve and fix the ww_mutex code (Nicolai Hähnle) - Add self-tests to the ww_mutex code (Chris Wilson) - Optimize percpu-rwsems with the 'rcuwait' mechanism (Davidlohr Bueso) - Micro-optimize the current-task logic all around the core kernel (Davidlohr Bueso) - Tidy up after recent optimizations: remove stale code and APIs, clean up the code (Waiman Long) - ... plus misc fixes, updates and cleanups" * 'locking-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (50 commits) fork: Fix task_struct alignment locking/spinlock/debug: Remove spinlock lockup detection code lockdep: Fix incorrect condition to print bug msgs for MAX_LOCKDEP_CHAIN_HLOCKS lkdtm: Convert to refcount_t testing kref: Implement 'struct kref' using refcount_t refcount_t: Introduce a special purpose refcount type sched/wake_q: Clarify queue reinit comment sched/wait, rcuwait: Fix typo in comment locking/mutex: Fix lockdep_assert_held() fail locking/rtmutex: Flip unlikely() branch to likely() in __rt_mutex_slowlock() locking/rwsem: Reinit wake_q after use locking/rwsem: Remove unnecessary atomic_long_t casts jump_labels: Move header guard #endif down where it belongs locking/atomic, kref: Implement kref_put_lock() locking/ww_mutex: Turn off __must_check for now locking/atomic, kref: Avoid more abuse locking/atomic, kref: Use kref_get_unless_zero() more locking/atomic, kref: Kill kref_sub() locking/atomic, kref: Add kref_read() locking/atomic, kref: Add KREF_INIT() ...
2017-02-15bpf: Rebuild bpf.o for any dependency updateMickaël Salaün1-2/+13
This is needed to force a rebuild of bpf.o when one of its dependencies (e.g. uapi/linux/bpf.h) is updated. Add a phony target. Signed-off-by: Mickaël Salaün <mic@digikod.net> Cc: Alexei Starovoitov <ast@fb.com> Cc: Daniel Borkmann <daniel@iogearbox.net> Cc: David S. Miller <davem@davemloft.net> Cc: Wang Nan <wangnan0@huawei.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-02-10bpf: Add test_tag to .gitignoreMickaël Salaün1-0/+1
Signed-off-by: Mickaël Salaün <mic@digikod.net> Cc: Alexei Starovoitov <ast@fb.com> Cc: Daniel Borkmann <daniel@iogearbox.net> Cc: Shuah Khan <shuah@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-02-10bpf: Remove bpf_sys.h from selftestsMickaël Salaün6-34/+3
Add require dependency headers. Signed-off-by: Mickaël Salaün <mic@digikod.net> Cc: Alexei Starovoitov <ast@fb.com> Cc: Daniel Borkmann <daniel@iogearbox.net> Cc: Shuah Khan <shuah@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-02-10bpf: Use bpf_create_map() from the libraryMickaël Salaün6-30/+15
Replace bpf_map_create() with bpf_create_map() calls. Signed-off-by: Mickaël Salaün <mic@digikod.net> Cc: Alexei Starovoitov <ast@fb.com> Cc: Daniel Borkmann <daniel@iogearbox.net> Cc: Shuah Khan <shuah@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-02-10bpf: Use bpf_map_get_next_key() from the libraryMickaël Salaün3-29/+18
Replace bpf_map_next_key() with bpf_map_get_next_key() calls. Signed-off-by: Mickaël Salaün <mic@digikod.net> Cc: Alexei Starovoitov <ast@fb.com> Cc: Daniel Borkmann <daniel@iogearbox.net> Cc: Shuah Khan <shuah@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-02-10bpf: Use bpf_map_delete_elem() from the libraryMickaël Salaün3-24/+14
Replace bpf_map_delete() with bpf_map_delete_elem() calls. Signed-off-by: Mickaël Salaün <mic@digikod.net> Cc: Alexei Starovoitov <ast@fb.com> Cc: Daniel Borkmann <daniel@iogearbox.net> Cc: Shuah Khan <shuah@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-02-10bpf: Use bpf_map_lookup_elem() from the libraryMickaël Salaün4-48/+37
Replace bpf_map_lookup() with bpf_map_lookup_elem() calls. Signed-off-by: Mickaël Salaün <mic@digikod.net> Cc: Alexei Starovoitov <ast@fb.com> Cc: Daniel Borkmann <daniel@iogearbox.net> Cc: Shuah Khan <shuah@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-02-10bpf: Use bpf_map_update_elem() from the libraryMickaël Salaün4-89/+97
Replace bpf_map_update() with bpf_map_update_elem() calls. Signed-off-by: Mickaël Salaün <mic@digikod.net> Cc: Alexei Starovoitov <ast@fb.com> Cc: Daniel Borkmann <daniel@iogearbox.net> Cc: Shuah Khan <shuah@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-02-10bpf: Use bpf_load_program() from the libraryMickaël Salaün4-27/+12
Replace bpf_prog_load() with bpf_load_program() calls. Signed-off-by: Mickaël Salaün <mic@digikod.net> Cc: Alexei Starovoitov <ast@fb.com> Cc: Daniel Borkmann <daniel@iogearbox.net> Cc: Shuah Khan <shuah@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-02-10bpf: Always test unprivileged programsMickaël Salaün2-6/+64
If selftests are run as root, then execute the unprivileged checks as well. This switch from 243 to 368 tests. The test numbers are suffixed with "/u" when executed as unprivileged or with "/p" when executed as privileged. The geteuid() check is replaced with a capability check. Handling capabilities requires the libcap dependency. Signed-off-by: Mickaël Salaün <mic@digikod.net> Acked-by: Alexei Starovoitov <ast@kernel.org> Acked-by: Daniel Borkmann <daniel@iogearbox.net> Cc: Shuah Khan <shuah@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-02-10bpf: Change the include directory for selftestMickaël Salaün1-1/+1
Use the tools include directory instead of the installed one to allow builds from other kernels. Signed-off-by: Mickaël Salaün <mic@digikod.net> Cc: Alexei Starovoitov <ast@fb.com> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Daniel Borkmann <daniel@iogearbox.net> Cc: David S. Miller <davem@davemloft.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-02-06bpf: enable verifier to add 0 to packet ptrWilliam Tu1-0/+23
The patch fixes the case when adding a zero value to the packet pointer. The zero value could come from src_reg equals type BPF_K or CONST_IMM. The patch fixes both, otherwise the verifer reports the following error: [...] R0=imm0,min_value=0,max_value=0 R1=pkt(id=0,off=0,r=4) R2=pkt_end R3=fp-12 R4=imm4,min_value=4,max_value=4 R5=pkt(id=0,off=4,r=4) 269: (bf) r2 = r0 // r2 becomes imm0 270: (77) r2 >>= 3 271: (bf) r4 = r1 // r4 becomes pkt ptr 272: (0f) r4 += r2 // r4 += 0 addition of negative constant to packet pointer is not allowed Signed-off-by: William Tu <u9012063@gmail.com> Signed-off-by: Mihai Budiu <mbudiu@vmware.com> Cc: Daniel Borkmann <daniel@iogearbox.net> Cc: Alexei Starovoitov <ast@kernel.org> Acked-by: Daniel Borkmann <daniel@iogearbox.net> Acked-by: Alexei Starovoitov <ast@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-02-06bpf: test for AND edge casesJosef Bacik1-0/+55
These two tests are based on the work done for f23cc643f9ba. The first test is just a basic one to make sure we don't allow AND'ing negative values, even if it would result in a valid index for the array. The second is a cleaned up version of the original testcase provided by Jann Horn that resulted in the commit. Acked-by: Alexei Starovoitov <ast@kernel.org> Acked-by: Daniel Borkmann <daniel@iogearbox.net> Signed-off-by: Josef Bacik <jbacik@fb.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-02-06Merge 4.10-rc7 into char-misc-nextGreg Kroah-Hartman2-27/+28
We want the hv and other fixes in here as well to handle merge and testing issues. Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-02-02x86/mpx: Re-add MPX to selftests MakefileDave Hansen1-1/+1
Ingo pointed out that the MPX tests were no longer in the selftests Makefile. It appears that I shot myself in the foot on this one and accidentally removed them when I added the pkeys tests, probably from bungling a merge conflict. Reported-by: Ingo Molnar <mingo@kernel.org> Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Fixes: 5f23f6d082a9 ("x86/pkeys: Add self-tests") Link: http://lkml.kernel.org/r/20170201225629.C3070852@viggo.jf.intel.com Signed-off-by: Ingo Molnar <mingo@kernel.org>
2017-01-31Merge branch 'for-mingo' of git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu into core/rcuIngo Molnar52-8/+1641
Pull RCU changes from Paul E. McKenney: - Dynticks updates, consolidating open-coded counter accesses into a well-defined API - SRCU updates: Simplify algorithm, add formal verification - Documentation updates - Miscellaneous fixes - Torture-test updates Signed-off-by: Ingo Molnar <mingo@kernel.org>
2017-01-28Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/netDavid S. Miller2-27/+28
Two trivial overlapping changes conflicts in MPLS and mlx5. Signed-off-by: David S. Miller <davem@davemloft.net>
2017-01-27Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/netLinus Torvalds1-26/+27
Pull networking fixes from David Miller: 1) GTP fixes from Andreas Schultz (missing genl module alias, clear IP DF on transmit). 2) Netfilter needs to reflect the fwmark when sending resets, from Pau Espin Pedrol. 3) nftable dump OOPS fix from Liping Zhang. 4) Fix erroneous setting of VIRTIO_NET_HDR_F_DATA_VALID on transmit, from Rolf Neugebauer. 5) Fix build error of ipt_CLUSTERIP when procfs is disabled, from Arnd Bergmann. 6) Fix regression in handling of NETIF_F_SG in harmonize_features(), from Eric Dumazet. 7) Fix RTNL deadlock wrt. lwtunnel module loading, from David Ahern. 8) tcp_fastopen_create_child() needs to setup tp->max_window, from Alexey Kodanev. 9) Missing kmemdup() failure check in ipv6 segment routing code, from Eric Dumazet. 10) Don't execute unix_bind() under the bindlock, otherwise we deadlock with splice. From WANG Cong. 11) ip6_tnl_parse_tlv_enc_lim() potentially reallocates the skb buffer, therefore callers must reload cached header pointers into that skb. Fix from Eric Dumazet. 12) Fix various bugs in legacy IRQ fallback handling in alx driver, from Tobias Regnery. 13) Do not allow lwtunnel drivers to be unloaded while they are referenced by active instances, from Robert Shearman. 14) Fix truncated PHY LED trigger names, from Geert Uytterhoeven. 15) Fix a few regressions from virtio_net XDP support, from John Fastabend and Jakub Kicinski. * git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (102 commits) ISDN: eicon: silence misleading array-bounds warning net: phy: micrel: add support for KSZ8795 gtp: fix cross netns recv on gtp socket gtp: clear DF bit on GTP packet tx gtp: add genl family modules alias tcp: don't annotate mark on control socket from tcp_v6_send_response() ravb: unmap descriptors when freeing rings virtio_net: reject XDP programs using header adjustment virtio_net: use dev_kfree_skb for small buffer XDP receive r8152: check rx after napi is enabled r8152: re-schedule napi for tx r8152: avoid start_xmit to schedule napi when napi is disabled r8152: avoid start_xmit to call napi_schedule during autosuspend net: dsa: Bring back device detaching in dsa_slave_suspend() net: phy: leds: Fix truncated LED trigger names net: phy: leds: Break dependency of phy.h on phy_led_triggers.h net: phy: leds: Clear phy_num_led_triggers on failure to avoid crash net-next: ethernet: mediatek: change the compatible string Documentation: devicetree: change the mediatek ethernet compatible string bnxt_en: Fix RTNL lock usage on bnxt_get_port_module_status(). ...
2017-01-25bpf: use prefix_len in test_tag when reading fdinfoDaniel Borkmann1-1/+1
We currently used len instead of prefix_len for the strncmp() in fdinfo on the prog_tag. It still worked as we matched on the correct output line also with first 8 instead of 10 chars, but lets fix it properly to use the intended length. Fixes: 62b64660262a ("bpf: add prog tag test case to bpf selftests") Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Acked-by: Alexei Starovoitov <ast@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-01-25Merge branches 'doc.2017.01.15b', 'dyntick.2017.01.23a', 'fixes.2017.01.23a', 'srcu.2017.01.25a' and 'torture.2017.01.15b' into HEADPaul E. McKenney52-8/+1641
doc.2017.01.15b: Documentation updates dyntick.2017.01.23a: Dyntick tracking consolidation fixes.2017.01.23a: Miscellaneous fixes srcu.2017.01.25a: SRCU rewrite, fixes, and verification torture.2017.01.15b: Torture-test updates
2017-01-25rcutorture: Add CBMC-based formal verification for SRCULance Roy40-0/+1582
This commit creates a formal/srcu-cbmc directory containing scripts that pull SRCU in from the source code, filter it to remove things that CBMC cannot handle, and run a series of verifications on it. This has a number of shortcomings: 1. It does not yet hook into the upper-level self-test Makefiles. 2. It tests only a single scenario, store buffering. 3. There is no gcc-based syntax-error prefiltering. Nevertheless, it does fully verify a piece of SRCU under a moderately weak memory model (PSO). Signed-off-by: Lance Roy <ldr709@gmail.com> Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
2017-01-25test_firmware: add test custom fallback triggerLuis R. Rodriguez1-0/+68
We have no custom fallback mechanism test interface. Provide one. This tests both the custom fallback mechanism and cancelling the it. Signed-off-by: Luis R. Rodriguez <mcgrof@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-01-25tools: firmware: add fallback cancelation testingLuis R. Rodriguez1-0/+32
Add a test case for cancelling the sync fallback mechanism. Signed-off-by: Luis R. Rodriguez <mcgrof@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-01-25tools: firmware: rename fallback mechanism scriptLuis R. Rodriguez2-3/+4
Calling it user mode helper only creates confusion. Signed-off-by: Luis R. Rodriguez <mcgrof@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-01-25tools: firmware: check for distro fallback udev cancel ruleLuis R. Rodriguez1-2/+26
Some distributions (Debian, OpenSUSE) have a udev rule in place to cancel all fallback mechanism uevents immediately. This would obviously make it hard to test against the fallback mechanism test interface, so we need to check for this. Signed-off-by: Luis R. Rodriguez <mcgrof@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-01-24bpf: enable verifier to better track const alu opsDaniel Borkmann1-0/+82
William reported couple of issues in relation to direct packet access. Typical scheme is to check for data + [off] <= data_end, where [off] can be either immediate or coming from a tracked register that contains an immediate, depending on the branch, we can then access the data. However, in case of calculating [off] for either the mentioned test itself or for access after the test in a more "complex" way, then the verifier will stop tracking the CONST_IMM marked register and will mark it as UNKNOWN_VALUE one. Adding that UNKNOWN_VALUE typed register to a pkt() marked register, the verifier then bails out in check_packet_ptr_add() as it finds the registers imm value below 48. In the first below example, that is due to evaluate_reg_imm_alu() not handling right shifts and thus marking the register as UNKNOWN_VALUE via helper __mark_reg_unknown_value() that resets imm to 0. In the second case the same happens at the time when r4 is set to r4 &= r5, where it transitions to UNKNOWN_VALUE from evaluate_reg_imm_alu(). Later on r4 we shift right by 3 inside evaluate_reg_alu(), where the register's imm turns into 3. That is, for registers with type UNKNOWN_VALUE, imm of 0 means that we don't know what value the register has, and for imm > 0 it means that the value has [imm] upper zero bits. F.e. when shifting an UNKNOWN_VALUE register by 3 to the right, no matter what value it had, we know that the 3 upper most bits must be zero now. This is to make sure that ALU operations with unknown registers don't overflow. Meaning, once we know that we have more than 48 upper zero bits, or, in other words cannot go beyond 0xffff offset with ALU ops, such an addition will track the target register as a new pkt() register with a new id, but 0 offset and 0 range, so for that a new data/data_end test will be required. Is the source register a CONST_IMM one that is to be added to the pkt() register, or the source instruction is an add instruction with immediate value, then it will get added if it stays within max 0xffff bounds. >From there, pkt() type, can be accessed should reg->off + imm be within the access range of pkt(). [...] from 28 to 30: R0=imm1,min_value=1,max_value=1 R1=pkt(id=0,off=0,r=22) R2=pkt_end R3=imm144,min_value=144,max_value=144 R4=imm0,min_value=0,max_value=0 R5=inv48,min_value=2054,max_value=2054 R10=fp 30: (bf) r5 = r3 31: (07) r5 += 23 32: (77) r5 >>= 3 33: (bf) r6 = r1 34: (0f) r6 += r5 cannot add integer value with 0 upper zero bits to ptr_to_packet [...] from 52 to 80: R0=imm1,min_value=1,max_value=1 R1=pkt(id=0,off=0,r=34) R2=pkt_end R3=inv R4=imm272 R5=inv56,min_value=17,max_value=17 R6=pkt(id=0,off=26,r=34) R10=fp 80: (07) r4 += 71 81: (18) r5 = 0xfffffff8 83: (5f) r4 &= r5 84: (77) r4 >>= 3 85: (0f) r1 += r4 cannot add integer value with 3 upper zero bits to ptr_to_packet Thus to get above use-cases working, evaluate_reg_imm_alu() has been extended for further ALU ops. This is fine, because we only operate strictly within realm of CONST_IMM types, so here we don't care about overflows as they will happen in the simulated but also real execution and interaction with pkt() in check_packet_ptr_add() will check actual imm value once added to pkt(), but it's irrelevant before. With regards to 06c1c049721a ("bpf: allow helpers access to variable memory") that works on UNKNOWN_VALUE registers, the verifier becomes now a bit smarter as it can better resolve ALU ops, so we need to adapt two test cases there, as min/max bound tracking only becomes necessary when registers were spilled to stack. So while mask was set before to track upper bound for UNKNOWN_VALUE case, it's now resolved directly as CONST_IMM, and such contructs are only necessary when f.e. registers are spilled. For commit 6b17387307ba ("bpf: recognize 64bit immediate loads as consts") that initially enabled dw load tracking only for nfp jit/ analyzer, I did couple of tests on large, complex programs and we don't increase complexity badly (my tests were in ~3% range on avg). I've added a couple of tests similar to affected code above, and it works fine with verifier now. Reported-by: William Tu <u9012063@gmail.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Cc: Gianluca Borello <g.borello@gmail.com> Cc: William Tu <u9012063@gmail.com> Acked-by: Alexei Starovoitov <ast@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-01-24bpf: add prog tag test case to bpf selftestsDaniel Borkmann2-2/+204
Add the test case used to compare the results from fdinfo with af_alg's output on the tag. Tests are from min to max sized programs, with and without maps included. # ./test_tag test_tag: OK (40945 tests) Tested on x86_64 and s390x. Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Acked-by: Alexei Starovoitov <ast@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-01-23bpf: Add tests for the lpm trie mapDavid Herrmann3-2/+361
The first part of this program runs randomized tests against the lpm-bpf-map. It implements a "Trivial Longest Prefix Match" (tlpm) based on simple, linear, single linked lists. The implementation should be pretty straightforward. Based on tlpm, this inserts randomized data into bpf-lpm-maps and verifies the trie-based bpf-map implementation behaves the same way as tlpm. The second part uses 'real world' IPv4 and IPv6 addresses and tests the trie with those. Signed-off-by: David Herrmann <dh.herrmann@gmail.com> Signed-off-by: Daniel Mack <daniel@zonque.org> Acked-by: Alexei Starovoitov <ast@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-01-18selftest/powerpc: Wrong PMC initialized in pmc56_overflow testMadhavan Srinivasan1-1/+1
Test uses PMC2 to count the event. But PMC1 is being initialized. Patch to fix it. Fixes: 3752e453f6ba ('selftests/powerpc: Add tests of PMU EBBs') Signed-off-by: Madhavan Srinivasan <maddy@linux.vnet.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2017-01-17bpf: Fix test_lru_sanity5() in test_lru_map.cMartin KaFai Lau1-26/+27
test_lru_sanity5() fails when the number of online cpus is fewer than the number of possible cpus. It can be reproduced with qemu by using cmd args "--smp cpus=2,maxcpus=8". The problem is the loop in test_lru_sanity5() is testing 'i' which is incorrect. This patch: 1. Make sched_next_online() always return -1 if it cannot find a next cpu to schedule the process. 2. In test_lru_sanity5(), the parent process does sched_setaffinity() first (through sched_next_online()) and the forked process will inherit it according to the 'man sched_setaffinity'. Fixes: 5db58faf989f ("bpf: Add tests for the LRU bpf_htab") Reported-by: Daniel Borkmann <daniel@iogearbox.net> Signed-off-by: Martin KaFai Lau <kafai@fb.com> Acked-by: Daniel Borkmann <daniel@iogearbox.net> Acked-by: Alexei Starovoitov <ast@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-01-16Merge 4.10-rc4 into driver-core-nextGreg Kroah-Hartman4-4/+4
We want the sysfs file revert and other fixes in here as well for testing. Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-01-14torture: Enable DEBUG_OBJECTS_RCU_HEAD for Tiny RCUPaul E. McKenney1-1/+1
The RCU torture tests currently do not run any Tiny RCU scenarios for CONFIG_DEBUG_OBJECTS_RCU_HEAD=y. This is a hole in the test, given that someone might need this in real life and given that Tiny RCU uses different callback-handling code than does Tree RCU. This commit therefore enables this Kconfig option for scenario TINY02. Reported-by: "Ahmed, Iftekhar" <ahmedi@oregonstate.edu> Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Reviewed-by: Josh Triplett <josh@joshtriplett.org>
2017-01-14torture: Update RCU test scenario documentationPaul E. McKenney1-2/+31
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Reviewed-by: Josh Triplett <josh@joshtriplett.org>
2017-01-14torture: Run a couple scenarios with CONFIG_RCU_EQS_DEBUGPaul E. McKenney2-0/+2
This commit runs TREE04 and TREE08 with CONFIG_RCU_EQS_DEBUG=y, enabling dyntick-counter checking on those two tests. Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Reviewed-by: Josh Triplett <josh@joshtriplett.org>
2017-01-14torture: Run one test with DEBUG_LOCK_ALLOC but not PROVE_LOCKINGPaul E. McKenney1-2/+1
This commit sets CONFIG_DEBUG_LOCK_ALLOC but not CONFIG_PROVE_LOCKING for TREE08 in order to have at least one test with this configuration. Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Reviewed-by: Josh Triplett <josh@joshtriplett.org>
2017-01-14torture: Run at least one test with CONFIG_DEBUG_OBJECTS_RCU_HEADPaul E. McKenney1-0/+1
This commit enables the CONFIG_DEBUG_OBJECTS_RCU_HEAD Kconfig option in TREE02 in order to do at least some testing with this enabled. Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Reviewed-by: Josh Triplett <josh@joshtriplett.org>
2017-01-14torture: Add tests without slow grace period setup/cleanupPaul E. McKenney8-3/+21
This commit moves CONFIG_RCU_TORTURE_TEST_SLOW_CLEANUP, CONFIG_RCU_TORTURE_TEST_SLOW_INIT, and CONFIG_RCU_TORTURE_TEST_SLOW_PREINIT from CFcommon to all of the TREE scenarios other than TREE08 and TREE09 in order to do at least some testing without these Kconfig options set. Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Reviewed-by: Josh Triplett <josh@joshtriplett.org>
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