Commit Graph

1059466 Commits

Author SHA1 Message Date
Song Liu
f7c4e85bcc perf bpf: Fix building perf with BUILD_BPF_SKEL=1 by default in more distros
Arnaldo reported that building all his containers with BUILD_BPF_SKEL=1
to then make this the default he found problems in some distros where
the system linux/bpf.h file was being used and lacked this:

   util/bpf_skel/bperf_leader.bpf.c:13:20: error: use of undeclared identifier 'BPF_F_PRESERVE_ELEMS'
           __uint(map_flags, BPF_F_PRESERVE_ELEMS);

So use instead the vmlinux.h file generated by bpftool from BTF info.

This fixed these as well, getting the build back working on debian:11,
debian:experimental and ubuntu:21.10:

  In file included from In file included from util/bpf_skel/bperf_leader.bpf.cutil/bpf_skel/bpf_prog_profiler.bpf.c::33:
  :
  In file included from In file included from /usr/include/linux/bpf.h/usr/include/linux/bpf.h::1111:
  :
  /usr/include/linux/types.h/usr/include/linux/types.h::55::1010:: In file included from  util/bpf_skel/bperf_follower.bpf.c:3fatal errorfatal error:
  : : In file included from /usr/include/linux/bpf.h:'asm/types.h' file not found11'asm/types.h' file not found:

  /usr/include/linux/types.h:5:10: fatal error: 'asm/types.h' file not found
  #include <asm/types.h>#include <asm/types.h>

           ^~~~~~~~~~~~~         ^~~~~~~~~~~~~

  #include <asm/types.h>
           ^~~~~~~~~~~~~
  1 error generated.

Reported-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Song Liu <song@kernel.org>
Tested-by: Athira Rajeev <atrajeev@linux.vnet.ibm.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Link: http://lore.kernel.org/lkml/CF175681-8101-43D1-ABDB-449E644BE986@fb.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2021-12-06 21:57:53 -03:00
Ian Rogers
4747395082 perf header: Fix memory leaks when processing feature headers
These leaks were found with leak sanitizer running "perf pipe recording
and injection test".

In pipe mode feat_fd may hold onto an events struct that needs freeing.

When string features are processed they may overwrite an already created
string, so free this before the overwrite.

Signed-off-by: Ian Rogers <irogers@google.com>
Acked-by: Jiri Olsa <jolsa@redhat.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lore.kernel.org/lkml/20211118201730.2302927-1-irogers@google.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2021-12-06 21:57:53 -03:00
Ian Rogers
1aa79e5773 perf test: Reset shadow counts before loading
Otherwise load counting is an average. Without this change
duration_time in test_memory_bandwidth will alter its value if an
earlier test contains duration_time.

This patch fixes an issue that's introduced in the proposed patch:
https://lore.kernel.org/lkml/20211124015226.3317994-1-irogers@google.com/
in perf test "Parse and process metrics".

Signed-off-by: Ian Rogers <irogers@google.com>
Acked-by: Jiri Olsa <jolsa@redhat.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: John Garry <john.garry@huawei.com>
Cc: Kajol Jain <kjain@linux.ibm.com>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Paul Clarke <pc@us.ibm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lore.kernel.org/lkml/20211128085810.4027314-1-irogers@google.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2021-12-06 21:57:53 -03:00
Thomas Richter
6c481031c9 perf test: Fix 'Simple expression parser' test on arch without CPU die topology info
Some platforms do not have CPU die support, for example s390.

Commit
Cc: Ian Rogers <irogers@google.com>
Fixes: fdf1e29b61 ("perf expr: Add metric literals for topology.")
fails on s390:

  # perf test -Fv 7
    ...
  # FAILED tests/expr.c:173 #num_dies >= #num_packages
    ---- end ----
    Simple expression parser: FAILED!
  #

Investigating this issue leads to these functions:

 build_cpu_topology()
   +--> has_die_topology(void)
        {
           struct utsname uts;

           if (uname(&uts) < 0)
                  return false;
           if (strncmp(uts.machine, "x86_64", 6))
                  return false;
           ....
        }

which always returns false on s390. The caller build_cpu_topology()
checks has_die_topology() return value. On false the the struct
cpu_topology::die_cpu_list is not contructed and has zero entries. This
leads to the failing comparison: #num_dies >= #num_packages.  s390 of
course has a positive number of packages.

Fix this and check if the function build_cpu_topology() did build up
a die_cpus_list. The number of entries in this list should be larger
than 0. If the number of list element is zero, the die_cpus_list has
not been created and the check in function test__expr():

    TEST_ASSERT_VAL("#num_dies >= #num_packages", \
		    num_dies >= num_packages)

always fails.

Output after:

  # perf test -Fv 7
   7: Simple expression parser                                        :
   --- start ---
   division by zero
   syntax error
   ---- end ----
   Simple expression parser: Ok
  #

Fixes: fdf1e29b61 ("perf expr: Add metric literals for topology.")
Signed-off-by: Thomas Richter <tmricht@linux.ibm.com>
Acked-by: Ian Rogers <irogers@google.com>
Cc: Heiko Carstens <hca@linux.ibm.com>
Cc: Sumanth Korikkar <sumanthk@linux.ibm.com>
Cc: Sven Schnelle <svens@linux.ibm.com>
Cc: Vasily Gorbik <gor@linux.ibm.com>
Link: http://lore.kernel.org/lkml/20211129112339.3003036-1-tmricht@linux.ibm.com
[ Added comment in the added 'if (num_dies)' line about architectures not having die topology ]
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2021-12-06 21:57:53 -03:00
Arnaldo Carvalho de Melo
3d1d57debe tools build: Remove needless libpython-version feature check that breaks test-all fast path
Since 66dfdff03d ("perf tools: Add Python 3 support") we don't use
the tools/build/feature/test-libpython-version.c version in any Makefile
feature check:

  $ find tools/ -type f | xargs grep feature-libpython-version
  $

The only place where this was used was removed in 66dfdff03d:

  -        ifneq ($(feature-libpython-version), 1)
  -          $(warning Python 3 is not yet supported; please set)
  -          $(warning PYTHON and/or PYTHON_CONFIG appropriately.)
  -          $(warning If you also have Python 2 installed, then)
  -          $(warning try something like:)
  -          $(warning $(and ,))
  -          $(warning $(and ,)  make PYTHON=python2)
  -          $(warning $(and ,))
  -          $(warning Otherwise, disable Python support entirely:)
  -          $(warning $(and ,))
  -          $(warning $(and ,)  make NO_LIBPYTHON=1)
  -          $(warning $(and ,))
  -          $(error   $(and ,))
  -        else
  -          LDFLAGS += $(PYTHON_EMBED_LDFLAGS)
  -          EXTLIBS += $(PYTHON_EMBED_LIBADD)
  -          LANG_BINDINGS += $(obj-perf)python/perf.so
  -          $(call detected,CONFIG_LIBPYTHON)
  -        endif

And nowadays we either build with PYTHON=python3 or just install the
python3 devel packages and perf will build against it.

But the leftover feature-libpython-version check made the fast path
feature detection to break in all cases except when python2 devel files
were installed:

  $ rpm -qa | grep python.*devel
  python3-devel-3.9.7-1.fc34.x86_64
  $ rm -rf /tmp/build/perf ; mkdir -p /tmp/build/perf ;
  $ make -C tools/perf O=/tmp/build/perf install-bin
  make: Entering directory '/var/home/acme/git/perf/tools/perf'
    BUILD:   Doing 'make -j32' parallel build
    HOSTCC  /tmp/build/perf/fixdep.o
  <SNIP>
  $ cat /tmp/build/perf/feature/test-all.make.output
  In file included from test-all.c:18:
  test-libpython-version.c:5:10: error: #error
      5 |         #error
        |          ^~~~~
  $ ldd ~/bin/perf | grep python
	libpython3.9.so.1.0 => /lib64/libpython3.9.so.1.0 (0x00007fda6dbcf000)
  $

As python3 is the norm these days, fix this by just removing the unused
feature-libpython-version feature check, making the test-all fast path
to work with the common case.

With this:

  $ rm -rf /tmp/build/perf ; mkdir -p /tmp/build/perf ;
  $ make -C tools/perf O=/tmp/build/perf install-bin |& head
  make: Entering directory '/var/home/acme/git/perf/tools/perf'
    BUILD:   Doing 'make -j32' parallel build
    HOSTCC  /tmp/build/perf/fixdep.o
    HOSTLD  /tmp/build/perf/fixdep-in.o
    LINK    /tmp/build/perf/fixdep

  Auto-detecting system features:
  ...                         dwarf: [ on  ]
  ...            dwarf_getlocations: [ on  ]
  ...                         glibc: [ on  ]
  $ ldd ~/bin/perf | grep python
	libpython3.9.so.1.0 => /lib64/libpython3.9.so.1.0 (0x00007f58800b0000)
  $ cat /tmp/build/perf/feature/test-all.make.output
  $

Reviewed-by: James Clark <james.clark@arm.com>
Fixes: 66dfdff03d ("perf tools: Add Python 3 support")
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Jaroslav Škarvada <jskarvad@redhat.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Link: https://lore.kernel.org/lkml/YaYmeeC6CS2b8OSz@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2021-12-06 21:57:53 -03:00
Ian Rogers
4ffbe87e2d perf tools: Fix SMT detection fast read path
sysfs__read_int() returns 0 on success, and so the fast read path was
always failing.

Fixes: bb629484d9 ("perf tools: Simplify checking if SMT is active.")
Signed-off-by: Ian Rogers <irogers@google.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: John Garry <john.garry@huawei.com>
Cc: Kajol Jain <kjain@linux.ibm.com>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Konstantin Khlebnikov <koct9i@gmail.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Paul Clarke <pc@us.ibm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lore.kernel.org/lkml/20211124001231.3277836-2-irogers@google.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2021-12-06 21:57:53 -03:00
Arnaldo Carvalho de Melo
cba43fcf7a tools headers UAPI: Sync powerpc syscall table file changed by new futex_waitv syscall
To pick the changes in this cset:

  a0eb2da92b ("futex: Wireup futex_waitv syscall")

That add support for this new syscall in tools such as 'perf trace'.

For instance, this is now possible (adapted from the x86_64 test output):

  # perf trace -e futex_waitv
  ^C#
  # perf trace -v -e futex_waitv
  event qualifier tracepoint filter: (common_pid != 807333 && common_pid != 3564) && (id == 449)
  ^C#
  # perf trace -v -e futex* --max-events 10
  event qualifier tracepoint filter: (common_pid != 812168 && common_pid != 3564) && (id == 221 || id == 449)
  mmap size 528384B
           ? (         ): Timer/219310  ... [continued]: futex())                                            = -1 ETIMEDOUT (Connection timed out)
       0.012 ( 0.002 ms): Timer/219310 futex(uaddr: 0x7fd0b152d3c8, op: WAKE|PRIVATE_FLAG, val: 1)           = 0
       0.024 ( 0.060 ms): Timer/219310 futex(uaddr: 0x7fd0b152d420, op: WAIT_BITSET|PRIVATE_FLAG, utime: 0x7fd0b1657840, val3: MATCH_ANY) = 0
       0.086 ( 0.001 ms): Timer/219310 futex(uaddr: 0x7fd0b152d3c8, op: WAKE|PRIVATE_FLAG, val: 1)           = 0
       0.088 (         ): Timer/219310 futex(uaddr: 0x7fd0b152d424, op: WAIT_BITSET|PRIVATE_FLAG, utime: 0x7fd0b1657840, val3: MATCH_ANY) ...
       0.075 ( 0.005 ms): Web Content/219299 futex(uaddr: 0x7fd0b152d420, op: WAKE|PRIVATE_FLAG, val: 1)     = 1
       0.169 ( 0.004 ms): Web Content/219299 futex(uaddr: 0x7fd0b152d424, op: WAKE|PRIVATE_FLAG, val: 1)     = 1
       0.088 ( 0.089 ms): Timer/219310  ... [continued]: futex())                                            = 0
       0.179 ( 0.001 ms): Timer/219310 futex(uaddr: 0x7fd0b152d3c8, op: WAKE|PRIVATE_FLAG, val: 1)           = 0
       0.181 (         ): Timer/219310 futex(uaddr: 0x7fd0b152d420, op: WAIT_BITSET|PRIVATE_FLAG, utime: 0x7fd0b1657840, val3: MATCH_ANY) ...
  #

That is the filter expression attached to the raw_syscalls:sys_{enter,exit}
tracepoints.

  $ grep futex tools/perf/arch/powerpc/entry/syscalls/syscall.tbl
  221	32	futex				sys_futex_time32
  221	64	futex				sys_futex
  221	spu	futex				sys_futex
  422	32	futex_time64			sys_futex			sys_futex
  449	common  futex_waitv                     sys_futex_waitv
  $

This addresses this perf build warnings:

  Warning: Kernel ABI header at 'tools/perf/arch/powerpc/entry/syscalls/syscall.tbl' differs from latest version at 'arch/powerpc/kernel/syscalls/syscall.tbl'
  diff -u tools/perf/arch/powerpc/entry/syscalls/syscall.tbl arch/powerpc/kernel/syscalls/syscall.tbl

Reviewed-by: Athira Rajeev <atrajeev@linux.vnet.ibm.com>
Tested-by: Athira Rajeev <atrajeev@linux.vnet.ibm.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>,
Cc: André Almeida <andrealmeid@collabora.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Link: https://lore.kernel.org/lkml/YZ%2F1OU9mJuyS2HMa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2021-12-06 21:57:53 -03:00
Adrian Hunter
c29d979260 perf inject: Fix itrace space allowed for new attributes
The space allowed for new attributes can be too small if existing header
information is large. That can happen, for example, if there are very
many CPUs, due to having an event ID per CPU per event being stored in the
header information.

Fix by adding the existing header.data_offset. Also increase the extra
space allowed to 8KiB and align to a 4KiB boundary for neatness.

Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Link: http://lore.kernel.org/lkml/20211125071457.2066863-1-adrian.hunter@intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2021-12-06 21:57:52 -03:00
Arnaldo Carvalho de Melo
71a16df164 tools headers UAPI: Sync s390 syscall table file changed by new futex_waitv syscall
To pick the changes in these csets:

  6c122360cf ("s390: wire up sys_futex_waitv system call")

That add support for this new syscall in tools such as 'perf trace'.

For instance, this is now possible (adapted from the x86_64 test output):

  # perf trace -e futex_waitv
  ^C#
  # perf trace -v -e futex_waitv
  event qualifier tracepoint filter: (common_pid != 807333 && common_pid != 3564) && (id == 449)
  ^C#
  # perf trace -v -e futex* --max-events 10
  event qualifier tracepoint filter: (common_pid != 812168 && common_pid != 3564) && (id == 238 || id == 449)
           ? (         ): Timer/219310  ... [continued]: futex())                                            = -1 ETIMEDOUT (Connection timed out)
       0.012 ( 0.002 ms): Timer/219310 futex(uaddr: 0x7fd0b152d3c8, op: WAKE|PRIVATE_FLAG, val: 1)           = 0
       0.024 ( 0.060 ms): Timer/219310 futex(uaddr: 0x7fd0b152d420, op: WAIT_BITSET|PRIVATE_FLAG, utime: 0x7fd0b1657840, val3: MATCH_ANY) = 0
       0.086 ( 0.001 ms): Timer/219310 futex(uaddr: 0x7fd0b152d3c8, op: WAKE|PRIVATE_FLAG, val: 1)           = 0
       0.088 (         ): Timer/219310 futex(uaddr: 0x7fd0b152d424, op: WAIT_BITSET|PRIVATE_FLAG, utime: 0x7fd0b1657840, val3: MATCH_ANY) ...
       0.075 ( 0.005 ms): Web Content/219299 futex(uaddr: 0x7fd0b152d420, op: WAKE|PRIVATE_FLAG, val: 1)     = 1
       0.169 ( 0.004 ms): Web Content/219299 futex(uaddr: 0x7fd0b152d424, op: WAKE|PRIVATE_FLAG, val: 1)     = 1
       0.088 ( 0.089 ms): Timer/219310  ... [continued]: futex())                                            = 0
       0.179 ( 0.001 ms): Timer/219310 futex(uaddr: 0x7fd0b152d3c8, op: WAKE|PRIVATE_FLAG, val: 1)           = 0
       0.181 (         ): Timer/219310 futex(uaddr: 0x7fd0b152d420, op: WAIT_BITSET|PRIVATE_FLAG, utime: 0x7fd0b1657840, val3: MATCH_ANY) ...
  #

That is the filter expression attached to the raw_syscalls:sys_{enter,exit}
tracepoints.

  $ grep futex tools/perf/arch/s390/entry/syscalls/syscall.tbl
  238  common	futex			sys_futex			sys_futex_time32
  422	32	futex_time64		-				sys_futex
  449  common	futex_waitv		sys_futex_waitv			sys_futex_waitv
  $

This addresses this perf build warnings:

  Warning: Kernel ABI header at 'tools/perf/arch/s390/entry/syscalls/syscall.tbl' differs from latest version at 'arch/s390/kernel/syscalls/syscall.tbl'
  diff -u tools/perf/arch/s390/entry/syscalls/syscall.tbl arch/s390/kernel/syscalls/syscall.tbl

Acked-by: Heiko Carstens <hca@linux.ibm.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>,
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Vasily Gorbik <gor@linux.ibm.com>
Link: https://lore.kernel.org/lkml/YZ%2F2qRW%2FTScYTP1U@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2021-12-06 21:57:52 -03:00
Jiri Olsa
3f8d657716 Revert "perf bench: Fix two memory leaks detected with ASan"
This: This reverts commit 92723ea0f1.

  # perf test 91
  91: perf stat --bpf-counters test           :RRRRRRRRRRRRR FAILED!
  # perf test 91
  91: perf stat --bpf-counters test           :RRRRRRRRRRRRR FAILED!
  # perf test 91
  91: perf stat --bpf-counters test           :RRRRRRRRRRRR FAILED!
  # perf test 91
  91: perf stat --bpf-counters test           :RRRRRRRRRRRRRRRRRR Ok
  # perf test 91
  91: perf stat --bpf-counters test           :RRRRRRRRR FAILED!
  # perf test 91
  91: perf stat --bpf-counters test           :RRRRRRRRRRR Ok
  # perf test 91
  91: perf stat --bpf-counters test           :RRRRRRRRRRRRRRR Ok

yep, it seems the perf bench is broken so the counts won't correlated if
I revert this one:

  92723ea0f1 perf bench: Fix two memory leaks detected with ASan

it works for me again.. it seems to break -t option

   [root@dell-r440-01 perf]# ./perf bench sched messaging -g 1 -l 100 -t
   # Running 'sched/messaging' benchmark:
   RRRperf: CLIENT: ready write: Bad file descriptor
   Rperf: SENDER: write: Bad file descriptor

Reported-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Jiri Olsa <jolsa@redhat.com>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Sohaib Mohamed <sohaib.amhmd@gmail.com>
Cc: Song Liu <songliubraving@fb.com>
Link: https://lore.kernel.org/lkml/YZev7KClb%2Fud43Lc@krava/
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2021-12-06 21:57:52 -03:00
Eric Dumazet
4dbb0dad8e devlink: fix netns refcount leak in devlink_nl_cmd_reload()
While preparing my patch series adding netns refcount tracking,
I spotted bugs in devlink_nl_cmd_reload()

Some error paths forgot to release a refcount on a netns.

To fix this, we can reduce the scope of get_net()/put_net()
section around the call to devlink_reload().

Fixes: ccdf07219d ("devlink: Add reload action option to devlink reload command")
Fixes: dc64cc7c63 ("devlink: Add devlink reload limit option")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Moshe Shemesh <moshe@mellanox.com>
Cc: Jacob Keller <jacob.e.keller@intel.com>
Cc: Jiri Pirko <jiri@nvidia.com>
Reviewed-by: Leon Romanovsky <leonro@nvidia.com>
Link: https://lore.kernel.org/r/20211205192822.1741045-1-eric.dumazet@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2021-12-06 16:56:32 -08:00
Antoine Tenart
dde91ccfa2 ethtool: do not perform operations on net devices being unregistered
There is a short period between a net device starts to be unregistered
and when it is actually gone. In that time frame ethtool operations
could still be performed, which might end up in unwanted or undefined
behaviours[1].

Do not allow ethtool operations after a net device starts its
unregistration. This patch targets the netlink part as the ioctl one
isn't affected: the reference to the net device is taken and the
operation is executed within an rtnl lock section and the net device
won't be found after unregister.

[1] For example adding Tx queues after unregister ends up in NULL
    pointer exceptions and UaFs, such as:

      BUG: KASAN: use-after-free in kobject_get+0x14/0x90
      Read of size 1 at addr ffff88801961248c by task ethtool/755

      CPU: 0 PID: 755 Comm: ethtool Not tainted 5.15.0-rc6+ #778
      Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-4.fc34 04/014
      Call Trace:
       dump_stack_lvl+0x57/0x72
       print_address_description.constprop.0+0x1f/0x140
       kasan_report.cold+0x7f/0x11b
       kobject_get+0x14/0x90
       kobject_add_internal+0x3d1/0x450
       kobject_init_and_add+0xba/0xf0
       netdev_queue_update_kobjects+0xcf/0x200
       netif_set_real_num_tx_queues+0xb4/0x310
       veth_set_channels+0x1c3/0x550
       ethnl_set_channels+0x524/0x610

Fixes: 041b1c5d4a ("ethtool: helper functions for netlink interface")
Suggested-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Antoine Tenart <atenart@kernel.org>
Link: https://lore.kernel.org/r/20211203101318.435618-1-atenart@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2021-12-06 16:53:32 -08:00
Salvatore Bonaccorso
cd8c917a56 Makefile: Do not quote value for CONFIG_CC_IMPLICIT_FALLTHROUGH
Andreas reported that a specific build environment for an external
module, being a bit broken, does pass CC_IMPLICIT_FALLTHROUGH quoted as
argument to gcc, causing an error

  gcc-11: error: "-Wimplicit-fallthrough=5": linker input file not found: No such file or directory

Until this is more generally fixed as outlined in [1], by fixing
scripts/link-vmlinux.sh, scripts/gen_autoksyms.sh, etc to not directly
include the include/config/auto.conf, and in a second step, change
Kconfig to generate the auto.conf without "", workaround the issue by
explicitly unquoting CC_IMPLICIT_FALLTHROUGH.

Reported-by: Andreas Beckmann <anbe@debian.org>
Link: https://bugs.debian.org/1001083
Link: https://lore.kernel.org/linux-kbuild/CAK7LNAR-VXwHFEJqCcrFDZj+_4+Xd6oynbj_0eS8N504_ydmyw@mail.gmail.com/ [1]
Signed-off-by: Salvatore Bonaccorso <carnil@debian.org>
Reviewed-by: Kees Cook <keescook@chromium.org>
Reviewed-by: Gustavo A. R. Silva <gustavoars@kernel.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2021-12-06 16:42:47 -08:00
Alex Hung
7d0c009043 platform/x86/intel: hid: add quirk to support Surface Go 3
Similar to other systems Surface Go 3 requires a DMI quirk to enable
5 button array for power and volume buttons.

Buglink: https://github.com/linux-surface/linux-surface/issues/595

Cc: stable@vger.kernel.org
Signed-off-by: Alex Hung <alex.hung@canonical.com>
Link: https://lore.kernel.org/r/20211203212810.2666508-1-alex.hung@canonical.com
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
2021-12-06 22:28:18 +01:00
Linus Torvalds
f80ef9e49f A few important documentation fixes, including breakage that comes with
v1.0 of the ReadTheDocs theme.
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Merge tag 'docs-5.16-3' of git://git.lwn.net/linux

Pull documentation fixes from Jonathan Corbet:
 "A few important documentation fixes, including breakage that comes
  with v1.0 of the ReadTheDocs theme"

* tag 'docs-5.16-3' of git://git.lwn.net/linux:
  Documentation: Add minimum pahole version
  Documentation/process: fix self reference
  docs: admin-guide/blockdev: Remove digraph of node-states
  docs: conf.py: fix support for Readthedocs v 1.0.0
2021-12-06 10:46:20 -08:00
Linus Torvalds
9d6cf47202 spi: Update for v5.16
Just one trivial update adding a device ID to the DT bindings.
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Merge tag 'spi-fix-v5.16-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi

Pull spi fix from Mark Brown:
 "Just one trivial update adding a device ID to the DT bindings"

* tag 'spi-fix-v5.16-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi:
  spi: spi-rockchip: Add rk3568-spi compatible
2021-12-06 10:22:12 -08:00
Linus Torvalds
b806bec538 regulator: Documentation fix for v5.16
A fix for bitrot in the documentation for protection interrupts that
 crept in as the code was revised during review.
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Merge tag 'regulator-fix-v5.16-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator

Pull regulator fix from Mark Brown:
 "Documentation fix for v5.17.

  A fix for bitrot in the documentation for protection interrupts that
  crept in as the code was revised during review"

* tag 'regulator-fix-v5.16-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator:
  regulator: Update protection IRQ helper docs
2021-12-06 10:14:12 -08:00
Linus Torvalds
55a677b256 EFI fix for v5.16
Ensure that the EFI memory map resides in encrypted memory even after it
 has been reallocated.
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Merge tag 'efi-urgent-for-v5.16' of git://git.kernel.org/pub/scm/linux/kernel/git/efi/efi

Pull EFI fix from Ard Biesheuvel:
 "Ensure that the EFI memory map resides in encrypted memory even after
  it has been reallocated"

* tag 'efi-urgent-for-v5.16' of git://git.kernel.org/pub/scm/linux/kernel/git/efi/efi:
  x86/sme: Explicitly map new EFI memmap table as encrypted
2021-12-06 10:09:00 -08:00
Norbert Zulinski
23ec111bf3 i40e: Fix NULL pointer dereference in i40e_dbg_dump_desc
When trying to dump VFs VSI RX/TX descriptors
using debugfs there was a crash
due to NULL pointer dereference in i40e_dbg_dump_desc.
Added a check to i40e_dbg_dump_desc that checks if
VSI type is correct for dumping RX/TX descriptors.

Fixes: 02e9c29081 ("i40e: debugfs interface")
Signed-off-by: Sylwester Dziedziuch <sylwesterx.dziedziuch@intel.com>
Signed-off-by: Norbert Zulinski <norbertx.zulinski@intel.com>
Signed-off-by: Mateusz Palczewski <mateusz.palczewski@intel.com>
Tested-by: Gurucharan G <gurucharanx.g@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
2021-12-06 09:44:56 -08:00
Mateusz Palczewski
8aa55ab422 i40e: Fix pre-set max number of queues for VF
After setting pre-set combined to 16 queues and reserving 16 queues by
tc qdisc, pre-set maximum combined queues returned to default value
after VF reset being 4 and this generated errors during removing tc.
Fixed by removing clear num_req_queues before reset VF.

Fixes: e284fc2804 (i40e: Add and delete cloud filter)
Signed-off-by: Grzegorz Szczurek <grzegorzx.szczurek@intel.com>
Signed-off-by: Mateusz Palczewski <mateusz.palczewski@intel.com>
Tested-by: Bindushree P <Bindushree.p@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
2021-12-06 09:44:56 -08:00
Karen Sornek
61125b8be8 i40e: Fix failed opcode appearing if handling messages from VF
Fix failed operation code appearing if handling messages from VF.
Implemented by waiting for VF appropriate state if request starts
handle while VF reset.
Without this patch the message handling request while VF is in
a reset state ends with error -5 (I40E_ERR_PARAM).

Fixes: 5c3c48ac6b ("i40e: implement virtual device interface")
Signed-off-by: Grzegorz Szczurek <grzegorzx.szczurek@intel.com>
Signed-off-by: Karen Sornek <karen.sornek@intel.com>
Tested-by: Tony Brelinski <tony.brelinski@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
2021-12-06 09:44:56 -08:00
Michal Maloszewski
1a1aa356dd iavf: Fix reporting when setting descriptor count
iavf_set_ringparams doesn't communicate to the user that

1. The user requested descriptor count is out of range. Instead it
   just quietly sets descriptors to the "clamped" value and calls it
   done. This makes it look an invalid value was successfully set as
   the descriptor count when this isn't actually true.

2. The user provided descriptor count needs to be inflated for alignment
   reasons.

This behavior is confusing. The ice driver has already addressed this
by rejecting invalid values for descriptor count and
messaging for alignment adjustments.
Do the same thing here by adding the error and info messages.

Fixes: fbb7ddfef2 ("i40evf: core ethtool functionality")
Signed-off-by: Anirudh Venkataramanan <anirudh.venkataramanan@intel.com>
Signed-off-by: Michal Maloszewski <michal.maloszewski@intel.com>
Tested-by: Konrad Jankowski <konrad0.jankowski@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
2021-12-06 08:27:50 -08:00
Takashi Iwai
38ddfb2699 ASoC: Fixes for v5.16
A relatively large collection of updates, the size is increased quite a
 bit by there being some repetitive changes for similar issues that occur
 multiple times with both notifying control value changes and runtime PM.
 
 The Rockchip update looks at first glance like a cleanup but fixes
 instantiation of the hardware on some systems.
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Merge tag 'asoc-fix-v5.16-rc4' of https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into for-linus

ASoC: Fixes for v5.16

A relatively large collection of updates, the size is increased quite a
bit by there being some repetitive changes for similar issues that occur
multiple times with both notifying control value changes and runtime PM.

The Rockchip update looks at first glance like a cleanup but fixes
instantiation of the hardware on some systems.
2021-12-06 17:25:10 +01:00
Geraldo Nascimento
fb1af5bea4 ALSA: usb-audio: Reorder snd_djm_devices[] entries
Olivia Mackintosh has posted to alsa-devel reporting that
there's a potential bug that could break mixer quirks for Pioneer
devices introduced by 6d27788160
"ALSA: usb-audio: Add support for the Pioneer DJM 750MK2
Mixer/Soundcard".

This happened because the DJM 750 MK2 was added last to the Pioneer DJM
device table index and defined as 0x4 but was added to snd_djm_devices[]
just after the DJM 750 (MK1) entry instead of last, after the DJM 900
NXS2. This escaped review.

To prevent that from ever happening again, Takashi Iwai suggested to use
C99 array designators in snd_djm_devices[] instead of simply reordering
the entries.

Fixes: 6d27788160 ("ALSA: usb-audio: Add support for the Pioneer DJM 750MK2")
Reported-by: Olivia Mackintosh <livvy@base.nu>
Suggested-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Geraldo Nascimento <geraldogabriel@gmail.com>
Link: https://lore.kernel.org/r/Yau46FDzoql0SNnW@geday
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2021-12-06 10:06:20 +01:00
Damien Le Moal
815b6cb37e ata: ahci_ceva: Fix id array access in ceva_ahci_read_id()
ATA IDENTIFY command returns an array of le16 words. Accessing it as a
u16 array triggers the following sparse warning:

drivers/ata/ahci_ceva.c:107:33: warning: invalid assignment: &=
drivers/ata/ahci_ceva.c:107:33:    left side has type unsigned short
drivers/ata/ahci_ceva.c:107:33:    right side has type restricted __le16

Use a local variable to explicitly cast the id array to __le16 to avoid
this warning.

Signed-off-by: Damien Le Moal <damien.lemoal@opensource.wdc.com>
2021-12-06 10:07:47 +09:00
Linus Torvalds
0fcfb00b28 Linux 5.16-rc4 2021-12-05 14:08:22 -08:00
Linus Torvalds
268ba09537 parisc architecture bug and warning fixes for kernel v5.16-rc4
Some bug and warning fixes:
 - Fix "make install" to use debians "installkernel" script which is now in /usr/sbin
 - Fix the bindeb-pkg make target by giving the correct KBUILD_IMAGE file name
 - Fix compiler warnings by annotating parisc agp init functions with __init
 - Fix timekeeping on SMP machines with dual-core CPUs
 - Enable some more config options in the 64-bit defconfig
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Merge tag 'for-5.16/parisc-6' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux

Pull parisc fixes from Helge Deller:
 "Some bug and warning fixes:

   - Fix "make install" to use debians "installkernel" script which is
     now in /usr/sbin

   - Fix the bindeb-pkg make target by giving the correct KBUILD_IMAGE
     file name

   - Fix compiler warnings by annotating parisc agp init functions with
     __init

   - Fix timekeeping on SMP machines with dual-core CPUs

   - Enable some more config options in the 64-bit defconfig"

* tag 'for-5.16/parisc-6' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux:
  parisc: Mark cr16 CPU clocksource unstable on all SMP machines
  parisc: Fix "make install" on newer debian releases
  parisc/agp: Annotate parisc agp init functions with __init
  parisc: Enable sata sil, audit and usb support on 64-bit defconfig
  parisc: Fix KBUILD_IMAGE for self-extracting kernel
2021-12-05 12:58:18 -08:00
Linus Torvalds
944207047c USB fixes for 5.16-rc4
Here are some small USB fixes for a few reported issues.  Included in
 here are:
 	- xhci fix for a _much_ reported regression.  I don't think
 	  there's a community distro that has not reported this problem
 	  yet :(
 	- new USB quirk addition
 	- cdns3 minor fixes
 	- typec regression fix.
 
 All of these have been in linux-next with no reported problems, and the
 xhci fix has been reported by many to resolve their reported problem.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'usb-5.16-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb

Pull USB fixes from Greg KH:
 "Here are some small USB fixes for a few reported issues. Included in
  here are:

   - xhci fix for a _much_ reported regression. I don't think there's a
     community distro that has not reported this problem yet :(

   - new USB quirk addition

   - cdns3 minor fixes

   - typec regression fix.

  All of these have been in linux-next with no reported problems, and
  the xhci fix has been reported by many to resolve their reported
  problem"

* tag 'usb-5.16-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb:
  usb: cdnsp: Fix a NULL pointer dereference in cdnsp_endpoint_init()
  usb: cdns3: gadget: fix new urb never complete if ep cancel previous requests
  usb: typec: tcpm: Wait in SNK_DEBOUNCED until disconnect
  USB: NO_LPM quirk Lenovo Powered USB-C Travel Hub
  xhci: Fix commad ring abort, write all 64 bits to CRCR register.
2021-12-05 09:34:57 -08:00
Linus Torvalds
5163953950 TTY/Serial fixes for 5.16-rc4
Here are some small TTY and Serial driver fixes for 5.16-rc4 to resolve
 a number of reported problems.
 
 They include:
 	- liteuart serial driver fixes
 	- 8250_pci serial driver fixes for pericom devices
 	- 8250 RTS line control fix while in RS-485 mode
 	- tegra serial driver fix
 	- msm_serial driver fix
 	- pl011 serial driver new id
 	- fsl_lpuart revert of broken change
 	- 8250_bcm7271 serial driver fix
 	- MAINTAINERS file update for rpmsg tty driver that came in
 	  5.16-rc1
 	- vgacon fix for reported problem
 
 All of these, except for the 8250_bcm7271 fix have been in linux-next
 with no reported problem.  The 8250_bcm7271 fix was added to the tree on
 Friday so no chance to be linux-next yet.  But it should be fine as the
 affected developers submitted it.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'tty-5.16-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty

Pull tty/serial fixes from Greg KH:
 "Here are some small TTY and Serial driver fixes for 5.16-rc4 to
  resolve a number of reported problems.

  They include:

   - liteuart serial driver fixes

   - 8250_pci serial driver fixes for pericom devices

   - 8250 RTS line control fix while in RS-485 mode

   - tegra serial driver fix

   - msm_serial driver fix

   - pl011 serial driver new id

   - fsl_lpuart revert of broken change

   - 8250_bcm7271 serial driver fix

   - MAINTAINERS file update for rpmsg tty driver that came in 5.16-rc1

   - vgacon fix for reported problem

  All of these, except for the 8250_bcm7271 fix have been in linux-next
  with no reported problem. The 8250_bcm7271 fix was added to the tree
  on Friday so no chance to be linux-next yet. But it should be fine as
  the affected developers submitted it"

* tag 'tty-5.16-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty:
  serial: 8250_bcm7271: UART errors after resuming from S2
  serial: 8250_pci: rewrite pericom_do_set_divisor()
  serial: 8250_pci: Fix ACCES entries in pci_serial_quirks array
  serial: 8250: Fix RTS modem control while in rs485 mode
  Revert "tty: serial: fsl_lpuart: drop earlycon entry for i.MX8QXP"
  serial: tegra: Change lower tolerance baud rate limit for tegra20 and tegra30
  serial: liteuart: relax compile-test dependencies
  serial: liteuart: fix minor-number leak on probe errors
  serial: liteuart: fix use-after-free and memleak on unbind
  serial: liteuart: Fix NULL pointer dereference in ->remove()
  vgacon: Propagate console boot parameters before calling `vc_resize'
  tty: serial: msm_serial: Deactivate RX DMA for polling support
  serial: pl011: Add ACPI SBSA UART match id
  serial: core: fix transmit-buffer reset and memleak
  MAINTAINERS: Add rpmsg tty driver maintainer
2021-12-05 09:13:20 -08:00
Linus Torvalds
7587a4a5a4 - Prevent a tick storm when a dedicated timekeeper CPU in nohz_full
mode runs for prolonged periods with interrupts disabled and ends up
 programming the next tick in the past, leading to that storm
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Merge tag 'timers_urgent_for_v5.16_rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull timer fix from Borislav Petkov:

 - Prevent a tick storm when a dedicated timekeeper CPU in nohz_full
   mode runs for prolonged periods with interrupts disabled and ends up
   programming the next tick in the past, leading to that storm

* tag 'timers_urgent_for_v5.16_rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  timers/nohz: Last resort update jiffies on nohz_full IRQ entry
2021-12-05 08:58:52 -08:00
Linus Torvalds
1d213767dc - Properly init uclamp_flags of a runqueue, on first enqueuing
- Fix preempt= callback return values
 
 - Correct utime/stime resource usage reporting on nohz_full to return
 the proper times instead of shorter ones
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Merge tag 'sched_urgent_for_v5.16_rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull scheduler fixes from Borislav Petkov:

 - Properly init uclamp_flags of a runqueue, on first enqueuing

 - Fix preempt= callback return values

 - Correct utime/stime resource usage reporting on nohz_full to return
   the proper times instead of shorter ones

* tag 'sched_urgent_for_v5.16_rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  sched/uclamp: Fix rq->uclamp_max not set on first enqueue
  preempt/dynamic: Fix setup_preempt_mode() return value
  sched/cputime: Fix getrusage(RUSAGE_THREAD) with nohz_full
2021-12-05 08:53:31 -08:00
Linus Torvalds
f5d54a42d3 - Fix a couple of SWAPGS fencing issues in the x86 entry code
- Use the proper operand types in __{get,put}_user() to prevent
 truncation in SEV-ES string io
 
 - Make sure the kernel mappings are present in trampoline_pgd in order
 to prevent any potential accesses to unmapped memory after switching to
 it
 
 - Fix a trivial list corruption in objtool's pv_ops validation
 
 - Disable the clocksource watchdog for TSC on platforms which claim
 that the TSC is constant, doesn't stop in sleep states, CPU has TSC
 adjust and the number of sockets of the platform are max 2, to prevent
 erroneous markings of the TSC as unstable.
 
 - Make sure TSC adjust is always checked not only when going idle
 
 - Prevent a stack leak by initializing struct _fpx_sw_bytes properly in
 the FPU code
 
 - Fix INTEL_FAM6_RAPTORLAKE define naming to adhere to the convention
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Merge tag 'x86_urgent_for_v5.16_rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull x86 fixes from Borislav Petkov:

 - Fix a couple of SWAPGS fencing issues in the x86 entry code

 - Use the proper operand types in __{get,put}_user() to prevent
   truncation in SEV-ES string io

 - Make sure the kernel mappings are present in trampoline_pgd in order
   to prevent any potential accesses to unmapped memory after switching
   to it

 - Fix a trivial list corruption in objtool's pv_ops validation

 - Disable the clocksource watchdog for TSC on platforms which claim
   that the TSC is constant, doesn't stop in sleep states, CPU has TSC
   adjust and the number of sockets of the platform are max 2, to
   prevent erroneous markings of the TSC as unstable.

 - Make sure TSC adjust is always checked not only when going idle

 - Prevent a stack leak by initializing struct _fpx_sw_bytes properly in
   the FPU code

 - Fix INTEL_FAM6_RAPTORLAKE define naming to adhere to the convention

* tag 'x86_urgent_for_v5.16_rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/xen: Add xenpv_restore_regs_and_return_to_usermode()
  x86/entry: Use the correct fence macro after swapgs in kernel CR3
  x86/entry: Add a fence for kernel entry SWAPGS in paranoid_entry()
  x86/sev: Fix SEV-ES INS/OUTS instructions for word, dword, and qword
  x86/64/mm: Map all kernel memory into trampoline_pgd
  objtool: Fix pv_ops noinstr validation
  x86/tsc: Disable clocksource watchdog for TSC on qualified platorms
  x86/tsc: Add a timer to make sure TSC_adjust is always checked
  x86/fpu/signal: Initialize sw_bytes in save_xstate_epilog()
  x86/cpu: Drop spurious underscore from RAPTOR_LAKE #define
2021-12-05 08:43:35 -08:00
Linus Torvalds
90bf8d98b4 * Static analysis fix
* New SEV-ES protocol for communicating invalid VMGEXIT requests
 * Ensure APICv is considered inactive if there is no APIC
 * Fix reserved bits for AMD PerfEvtSeln register
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Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm

Pull more kvm fixes from Paolo Bonzini:

 - Static analysis fix

 - New SEV-ES protocol for communicating invalid VMGEXIT requests

 - Ensure APICv is considered inactive if there is no APIC

 - Fix reserved bits for AMD PerfEvtSeln register

* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
  KVM: SVM: Do not terminate SEV-ES guests on GHCB validation failure
  KVM: SEV: Fall back to vmalloc for SEV-ES scratch area if necessary
  KVM: SEV: Return appropriate error codes if SEV-ES scratch setup fails
  KVM: x86/mmu: Retry page fault if root is invalidated by memslot update
  KVM: VMX: Set failure code in prepare_vmcs02()
  KVM: ensure APICv is considered inactive if there is no APIC
  KVM: x86/pmu: Fix reserved bits for AMD PerfEvtSeln register
2021-12-05 08:25:33 -08:00
Tom Lendacky
1ff2fc0286 x86/sme: Explicitly map new EFI memmap table as encrypted
Reserving memory using efi_mem_reserve() calls into the x86
efi_arch_mem_reserve() function. This function will insert a new EFI
memory descriptor into the EFI memory map representing the area of
memory to be reserved and marking it as EFI runtime memory. As part
of adding this new entry, a new EFI memory map is allocated and mapped.
The mapping is where a problem can occur. This new memory map is mapped
using early_memremap() and generally mapped encrypted, unless the new
memory for the mapping happens to come from an area of memory that is
marked as EFI_BOOT_SERVICES_DATA memory. In this case, the new memory will
be mapped unencrypted. However, during replacement of the old memory map,
efi_mem_type() is disabled, so the new memory map will now be long-term
mapped encrypted (in efi.memmap), resulting in the map containing invalid
data and causing the kernel boot to crash.

Since it is known that the area will be mapped encrypted going forward,
explicitly map the new memory map as encrypted using early_memremap_prot().

Cc: <stable@vger.kernel.org> # 4.14.x
Fixes: 8f716c9b5f ("x86/mm: Add support to access boot related data in the clear")
Link: https://lore.kernel.org/all/ebf1eb2940405438a09d51d121ec0d02c8755558.1634752931.git.thomas.lendacky@amd.com/
Signed-off-by: Tom Lendacky <thomas.lendacky@amd.com>
[ardb: incorporate Kconfig fix by Arnd]
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
2021-12-05 16:44:52 +01:00
Tom Lendacky
ad5b353240 KVM: SVM: Do not terminate SEV-ES guests on GHCB validation failure
Currently, an SEV-ES guest is terminated if the validation of the VMGEXIT
exit code or exit parameters fails.

The VMGEXIT instruction can be issued from userspace, even though
userspace (likely) can't update the GHCB. To prevent userspace from being
able to kill the guest, return an error through the GHCB when validation
fails rather than terminating the guest. For cases where the GHCB can't be
updated (e.g. the GHCB can't be mapped, etc.), just return back to the
guest.

The new error codes are documented in the lasest update to the GHCB
specification.

Fixes: 291bd20d5d ("KVM: SVM: Add initial support for a VMGEXIT VMEXIT")
Signed-off-by: Tom Lendacky <thomas.lendacky@amd.com>
Message-Id: <b57280b5562893e2616257ac9c2d4525a9aeeb42.1638471124.git.thomas.lendacky@amd.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2021-12-05 03:02:04 -05:00
Sean Christopherson
a655276a59 KVM: SEV: Fall back to vmalloc for SEV-ES scratch area if necessary
Use kvzalloc() to allocate KVM's buffer for SEV-ES's GHCB scratch area so
that KVM falls back to __vmalloc() if physically contiguous memory isn't
available.  The buffer is purely a KVM software construct, i.e. there's
no need for it to be physically contiguous.

Cc: Tom Lendacky <thomas.lendacky@amd.com>
Signed-off-by: Sean Christopherson <seanjc@google.com>
Message-Id: <20211109222350.2266045-3-seanjc@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2021-12-05 03:02:03 -05:00
Sean Christopherson
75236f5f22 KVM: SEV: Return appropriate error codes if SEV-ES scratch setup fails
Return appropriate error codes if setting up the GHCB scratch area for an
SEV-ES guest fails.  In particular, returning -EINVAL instead of -ENOMEM
when allocating the kernel buffer could be confusing as userspace would
likely suspect a guest issue.

Fixes: 8f423a80d2 ("KVM: SVM: Support MMIO for an SEV-ES guest")
Cc: Tom Lendacky <thomas.lendacky@amd.com>
Signed-off-by: Sean Christopherson <seanjc@google.com>
Message-Id: <20211109222350.2266045-2-seanjc@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2021-12-05 03:02:03 -05:00
Linus Torvalds
79a7216204 Fixes for 5.16-rc3:
- Remove an unnecessary (and backwards) rename flags check that
    duplicates a VFS level check.
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Merge tag 'xfs-5.16-fixes-2' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux

Pull xfs fix from Darrick Wong:
 "Remove an unnecessary (and backwards) rename flags check that
  duplicates a VFS level check"

* tag 'xfs-5.16-fixes-2' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux:
  xfs: remove incorrect ASSERT in xfs_rename
2021-12-04 17:22:53 -08:00
Linus Torvalds
23b55d673d 3 SMB3 multichannel/fscache fixes and a DFS fix
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Merge tag '5.16-rc3-smb3-fixes' of git://git.samba.org/sfrench/cifs-2.6

Pull cifs fixes from Steve French:
 "Three SMB3 multichannel/fscache fixes and a DFS fix.

  In testing multichannel reconnect scenarios recently various problems
  with the cifs.ko implementation of fscache were found (e.g. incorrect
  initialization of fscache cookies in some cases)"

* tag '5.16-rc3-smb3-fixes' of git://git.samba.org/sfrench/cifs-2.6:
  cifs: avoid use of dstaddr as key for fscache client cookie
  cifs: add server conn_id to fscache client cookie
  cifs: wait for tcon resource_id before getting fscache super
  cifs: fix missed refcounting of ipc tcon
2021-12-04 13:43:52 -08:00
Helge Deller
afdb4a5b1d parisc: Mark cr16 CPU clocksource unstable on all SMP machines
In commit c8c3735997 ("parisc: Enhance detection of synchronous cr16
clocksources") I assumed that CPUs on the same physical core are syncronous.
While booting up the kernel on two different C8000 machines, one with a
dual-core PA8800 and one with a dual-core PA8900 CPU, this turned out to be
wrong. The symptom was that I saw a jump in the internal clocks printed to the
syslog and strange overall behaviour.  On machines which have 4 cores (2
dual-cores) the problem isn't visible, because the current logic already marked
the cr16 clocksource unstable in this case.

This patch now marks the cr16 interval timers unstable if we have more than one
CPU in the system, and it fixes this issue.

Fixes: c8c3735997 ("parisc: Enhance detection of synchronous cr16 clocksources")
Signed-off-by: Helge Deller <deller@gmx.de>
Cc: <stable@vger.kernel.org> # v5.15+
2021-12-04 21:36:04 +01:00
Helge Deller
0f9fee4cde parisc: Fix "make install" on newer debian releases
On newer debian releases the debian-provided "installkernel" script is
installed in /usr/sbin. Fix the kernel install.sh script to look for the
script in this directory as well.

Signed-off-by: Helge Deller <deller@gmx.de>
Cc: <stable@vger.kernel.org> # v3.13+
2021-12-04 21:36:04 +01:00
Linus Torvalds
bbef3c7a63 block-5.16-2021-12-03
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Merge tag 'block-5.16-2021-12-03' of git://git.kernel.dk/linux-block

Pull block fix from Jens Axboe:
 "A single fix for repeated printk spam from loop"

* tag 'block-5.16-2021-12-03' of git://git.kernel.dk/linux-block:
  loop: Use pr_warn_once() for loop_control_remove() warning
2021-12-04 08:38:25 -08:00
Linus Torvalds
8b9a02280e io_uring-5.16-2021-12-03
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Merge tag 'io_uring-5.16-2021-12-03' of git://git.kernel.dk/linux-block

Pull io_uring fix from Jens Axboe:
 "Just a single fix preventing repeated retries of task_work based io-wq
  thread creation, fixing a regression from when io-wq was made more (a
  bit too much) resilient against signals"

* tag 'io_uring-5.16-2021-12-03' of git://git.kernel.dk/linux-block:
  io-wq: don't retry task_work creation failure on fatal conditions
2021-12-04 08:34:59 -08:00
Linus Torvalds
e3b8bb4547 SCSI fixes on 20211204
two patches, both in drivers.  One is a fix to FC recovery (lpfc) and
 the other is an enhancement to support the Intel Alder Motherboard
 with the UFS driver which comes under the -rc exception process for
 hardware enabling.
 
 Signed-off-by: James E.J. Bottomley <jejb@linux.ibm.com>
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Merge tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi

Pull SCSI fixes from James Bottomley:
 "Two patches, both in drivers.

  One is a fix to FC recovery (lpfc) and the other is an enhancement to
  support the Intel Alder Motherboard with the UFS driver which comes
  under the -rc exception process for hardware enabling"

* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
  scsi: ufs: ufs-pci: Add support for Intel ADL
  scsi: lpfc: Fix non-recovery of remote ports following an unsolicited LOGO
2021-12-04 08:28:42 -08:00
Linus Torvalds
5c623c3689 Fixes in gfs2:
* Since commit 486408d690 ("gfs2: Cancel remote delete work
   asynchronously"), inode create and lookup-by-number can overlap more
   easily and we can end up with temporary duplicate inodes.  Fix the
   code to prevent that.
 * Fix a BUG demoting weak glock holders from a remote node.
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Merge tag 'gfs2-v5.16-rc4-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/gfs2/linux-gfs2

Pull gfs2 fixes from Andreas Gruenbacher:

 - Since commit 486408d690 ("gfs2: Cancel remote delete work
   asynchronously"), inode create and lookup-by-number can overlap more
   easily and we can end up with temporary duplicate inodes. Fix the
   code to prevent that.

 - Fix a BUG demoting weak glock holders from a remote node.

* tag 'gfs2-v5.16-rc4-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/gfs2/linux-gfs2:
  gfs2: gfs2_create_inode rework
  gfs2: gfs2_inode_lookup rework
  gfs2: gfs2_inode_lookup cleanup
  gfs2: Fix remote demote of weak glock holders
2021-12-04 08:13:20 -08:00
Qais Yousef
315c4f8848 sched/uclamp: Fix rq->uclamp_max not set on first enqueue
Commit d81ae8aac8 ("sched/uclamp: Fix initialization of struct
uclamp_rq") introduced a bug where uclamp_max of the rq is not reset to
match the woken up task's uclamp_max when the rq is idle.

The code was relying on rq->uclamp_max initialized to zero, so on first
enqueue

	static inline void uclamp_rq_inc_id(struct rq *rq, struct task_struct *p,
					    enum uclamp_id clamp_id)
	{
		...

		if (uc_se->value > READ_ONCE(uc_rq->value))
			WRITE_ONCE(uc_rq->value, uc_se->value);
	}

was actually resetting it. But since commit d81ae8aac8 changed the
default to 1024, this no longer works. And since rq->uclamp_flags is
also initialized to 0, neither above code path nor uclamp_idle_reset()
update the rq->uclamp_max on first wake up from idle.

This is only visible from first wake up(s) until the first dequeue to
idle after enabling the static key. And it only matters if the
uclamp_max of this task is < 1024 since only then its uclamp_max will be
effectively ignored.

Fix it by properly initializing rq->uclamp_flags = UCLAMP_FLAG_IDLE to
ensure uclamp_idle_reset() is called which then will update the rq
uclamp_max value as expected.

Fixes: d81ae8aac8 ("sched/uclamp: Fix initialization of struct uclamp_rq")
Signed-off-by: Qais Yousef <qais.yousef@arm.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Valentin Schneider <Valentin.Schneider@arm.com>
Tested-by: Dietmar Eggemann <dietmar.eggemann@arm.com>
Link: https://lkml.kernel.org/r/20211202112033.1705279-1-qais.yousef@arm.com
2021-12-04 10:56:18 +01:00
Andrew Halaney
9ed20bafc8 preempt/dynamic: Fix setup_preempt_mode() return value
__setup() callbacks expect 1 for success and 0 for failure. Correct the
usage here to reflect that.

Fixes: 826bfeb37b ("preempt/dynamic: Support dynamic preempt with preempt= boot option")
Reported-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Andrew Halaney <ahalaney@redhat.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lkml.kernel.org/r/20211203233203.133581-1-ahalaney@redhat.com
2021-12-04 10:56:18 +01:00
Lee Jones
2be6d4d16a net: cdc_ncm: Allow for dwNtbOutMaxSize to be unset or zero
Currently, due to the sequential use of min_t() and clamp_t() macros,
in cdc_ncm_check_tx_max(), if dwNtbOutMaxSize is not set, the logic
sets tx_max to 0.  This is then used to allocate the data area of the
SKB requested later in cdc_ncm_fill_tx_frame().

This does not cause an issue presently because when memory is
allocated during initialisation phase of SKB creation, more memory
(512b) is allocated than is required for the SKB headers alone (320b),
leaving some space (512b - 320b = 192b) for CDC data (172b).

However, if more elements (for example 3 x u64 = [24b]) were added to
one of the SKB header structs, say 'struct skb_shared_info',
increasing its original size (320b [320b aligned]) to something larger
(344b [384b aligned]), then suddenly the CDC data (172b) no longer
fits in the spare SKB data area (512b - 384b = 128b).

Consequently the SKB bounds checking semantics fails and panics:

  skbuff: skb_over_panic: text:ffffffff830a5b5f len:184 put:172   \
     head:ffff888119227c00 data:ffff888119227c00 tail:0xb8 end:0x80 dev:<NULL>

  ------------[ cut here ]------------
  kernel BUG at net/core/skbuff.c:110!
  RIP: 0010:skb_panic+0x14f/0x160 net/core/skbuff.c:106
  <snip>
  Call Trace:
   <IRQ>
   skb_over_panic+0x2c/0x30 net/core/skbuff.c:115
   skb_put+0x205/0x210 net/core/skbuff.c:1877
   skb_put_zero include/linux/skbuff.h:2270 [inline]
   cdc_ncm_ndp16 drivers/net/usb/cdc_ncm.c:1116 [inline]
   cdc_ncm_fill_tx_frame+0x127f/0x3d50 drivers/net/usb/cdc_ncm.c:1293
   cdc_ncm_tx_fixup+0x98/0xf0 drivers/net/usb/cdc_ncm.c:1514

By overriding the max value with the default CDC_NCM_NTB_MAX_SIZE_TX
when not offered through the system provided params, we ensure enough
data space is allocated to handle the CDC data, meaning no crash will
occur.

Cc: Oliver Neukum <oliver@neukum.org>
Fixes: 289507d336 ("net: cdc_ncm: use sysfs for rx/tx aggregation tuning")
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Reviewed-by: Bjørn Mork <bjorn@mork.no>
Link: https://lore.kernel.org/r/20211202143437.1411410-1-lee.jones@linaro.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2021-12-03 16:56:02 -08:00
Manish Chopra
8e227b198a qede: validate non LSO skb length
Although it is unlikely that stack could transmit a non LSO
skb with length > MTU, however in some cases or environment such
occurrences actually resulted into firmware asserts due to packet
length being greater than the max supported by the device (~9700B).

This patch adds the safeguard for such odd cases to avoid firmware
asserts.

v2: Added "Fixes" tag with one of the initial driver commit
    which enabled the TX traffic actually (as this was probably
    day1 issue which was discovered recently by some customer
    environment)

Fixes: a2ec6172d2 ("qede: Add support for link")
Signed-off-by: Manish Chopra <manishc@marvell.com>
Signed-off-by: Alok Prasad <palok@marvell.com>
Signed-off-by: Prabhakar Kushwaha <pkushwaha@marvell.com>
Signed-off-by: Ariel Elior <aelior@marvell.com>
Link: https://lore.kernel.org/r/20211203174413.13090-1-manishc@marvell.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2021-12-03 16:53:37 -08:00
Maxim Mikityanskiy
2fa7d94afc bpf: Fix the off-by-two error in range markings
The first commit cited below attempts to fix the off-by-one error that
appeared in some comparisons with an open range. Due to this error,
arithmetically equivalent pieces of code could get different verdicts
from the verifier, for example (pseudocode):

  // 1. Passes the verifier:
  if (data + 8 > data_end)
      return early
  read *(u64 *)data, i.e. [data; data+7]

  // 2. Rejected by the verifier (should still pass):
  if (data + 7 >= data_end)
      return early
  read *(u64 *)data, i.e. [data; data+7]

The attempted fix, however, shifts the range by one in a wrong
direction, so the bug not only remains, but also such piece of code
starts failing in the verifier:

  // 3. Rejected by the verifier, but the check is stricter than in #1.
  if (data + 8 >= data_end)
      return early
  read *(u64 *)data, i.e. [data; data+7]

The change performed by that fix converted an off-by-one bug into
off-by-two. The second commit cited below added the BPF selftests
written to ensure than code chunks like #3 are rejected, however,
they should be accepted.

This commit fixes the off-by-two error by adjusting new_range in the
right direction and fixes the tests by changing the range into the
one that should actually fail.

Fixes: fb2a311a31 ("bpf: fix off by one for range markings with L{T, E} patterns")
Fixes: b37242c773 ("bpf: add test cases to bpf selftests to cover all access tests")
Signed-off-by: Maxim Mikityanskiy <maximmi@nvidia.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Link: https://lore.kernel.org/bpf/20211130181607.593149-1-maximmi@nvidia.com
2021-12-03 21:44:42 +01:00