| Commit message (Collapse) | Author | Age | Files | Lines |
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Merge second patchbomb from Andrew Morton:
- the rest of MM
- misc fs fixes
- add execveat() syscall
- new ratelimit feature for fault-injection
- decompressor updates
- ipc/ updates
- fallocate feature creep
- fsnotify cleanups
- a few other misc things
* emailed patches from Andrew Morton <akpm@linux-foundation.org>: (99 commits)
cgroups: Documentation: fix trivial typos and wrong paragraph numberings
parisc: percpu: update comments referring to __get_cpu_var
percpu: update local_ops.txt to reflect this_cpu operations
percpu: remove __get_cpu_var and __raw_get_cpu_var macros
fsnotify: remove destroy_list from fsnotify_mark
fsnotify: unify inode and mount marks handling
fallocate: create FAN_MODIFY and IN_MODIFY events
mm/cma: make kmemleak ignore CMA regions
slub: fix cpuset check in get_any_partial
slab: fix cpuset check in fallback_alloc
shmdt: use i_size_read() instead of ->i_size
ipc/shm.c: fix overly aggressive shmdt() when calls span multiple segments
ipc/msg: increase MSGMNI, remove scaling
ipc/sem.c: increase SEMMSL, SEMMNI, SEMOPM
ipc/sem.c: change memory barrier in sem_lock() to smp_rmb()
lib/decompress.c: consistency of compress formats for kernel image
decompress_bunzip2: off by one in get_next_block()
usr/Kconfig: make initrd compression algorithm selection not expert
fault-inject: add ratelimit option
ratelimit: add initialization macro
...
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Signed-off-by: David Drysdale <drysdale@google.com>
Cc: Meredydd Luff <meredydd@senatehouse.org>
Cc: Shuah Khan <shuah.kh@samsung.com>
Cc: "Eric W. Biederman" <ebiederm@xmission.com>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Alexander Viro <viro@zeniv.linux.org.uk>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Kees Cook <keescook@chromium.org>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Rich Felker <dalias@aerifal.cx>
Cc: Christoph Hellwig <hch@infradead.org>
Cc: Michael Kerrisk <mtk.manpages@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Pull documentation update from Jonathan Corbet:
"Here's my set of accumulated documentation changes for 3.19.
It includes a couple of additions to the coding style document, some
fixes for minor build problems within the documentation tree, the
relocation of the kselftest docs, and various tweaks and additions.
A couple of changes reach outside of Documentation/; they only make
trivial comment changes and I did my best to get the required acks.
Complete with a shiny signed tag this time around"
* tag 'docs-for-linus' of git://git.lwn.net/linux-2.6:
kobject: grammar fix
Input: xpad - update docs to reflect current state
Documentation: Build mic/mpssd only for x86_64
cgroups: Documentation: fix wrong cgroupfs paths
Documentation/email-clients.txt: add info about Claws Mail
CodingStyle: add some more error handling guidelines
kselftest: Move the docs to the Documentation dir
Documentation: fix formatting to make 's' happy
Documentation: power: Fix typo in Documentation/power
Documentation: vm: Add 1GB large page support information
ipv4: add kernel parameter tcpmhash_entries
Documentation: Fix a typo in mailbox.txt
treewide: Fix typo in Documentation/DocBook/device-drivers
CodingStyle: Add a chapter on conditional compilation
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Also, adjust the formatting a bit, and expand the section about using
TARGETS= on the make command line.
Signed-off-by: Tim Bird <tim.bird@sonymobile.com>
Acked-by: Shuah Khan <shuahkh@osg.samsung.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
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git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-ktest
Pull ktest changes from Steven Rostedt:
"The following ktest updates were done:
- Fix handling the make kernelrelease change
- Fix make_min_config that was broken by new bisect_config changes
- Allow tests to undefine default options (not just being able to
override them)
- Print name of test (if defined) to start of test output"
* tag 'ktest-v3.19' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-ktest:
ktest: Add back "tail -1" to kernelrelease make
ktest: Add name to running title
ktest: Allow tests to undefine default options
ktest: Fix make_min_config to handle new assign_configs call
ktest: Use make -s kernelrelease
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Commit 52d21580b362 "ktest: Use make -s kernelrelease" fixed commit
7ff525712acf "kbuild: fake the "Entering directory ..." message more simply"
as that commit added output after the make kernelrelease. But there's still
some build scripts that are used by ktest that has output before the make
is executed, and requires that only the last line is printed.
Cc: Michal Marek <mmarek@suse.cz>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
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Instead of just showing the test type of test in the start of the
test, like this:
RUNNING TEST 1 of 26 with option build defconfig
Add the name (if it is defined) as well, like this:
RUNNING TEST 1 of 26 (arm64 aarch64-linux) with option build defconfig
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
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Tests can set options that override the default ones. But if a test
tries to undefine a default option, it is simply ignored and the
default option stays as is.
For example, if you want to have a test that defines no MIN_CONFIG
then the test should be able to do that with:
TEST_START
MIN_CONFIG =
Which should make MIN_CONFIG not defined for that test. But the way
the code currently works, undefined options in tests are dropped.
This is because the NULL options are evaluated during the reading of
the config file and since one can disable default options in the default
section with this method, it is evaluated there (the option turns to a
undef). But undef options in the test section mean to use the default
option.
To fix this, keep the empty string in the option during the reading
of the config file, and then evaluate it when running the test. This
will allow tests to null out default options.
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
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Commit 6071c22e1755 "ktest: Rewrite the config-bisect to actually work"
fixed the config-bisect to work nicely but in doing so it broke
make_min_config by changing the way assign_configs works.
The assign_configs function now adds the config to the hash even if
it is disabled, but changes the hash value to be that of the
line "# CONFIG_FOO is not set". Unfortunately, the make_min_config
test only checks to see if the config is removed. It now needs to
check if the config is in the hash and not set to be disabled.
Cc: stable@vger.kernel.org # 3.17+
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
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The previous tail -1 broke with commit 7ff525712acf ("kbuild: fake the
"Entering directory ..." message more simply")
Link: http://lkml.kernel.org/r/20141022194408.GA20989@pobox.suse.cz
Reported-by: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Michal Marek <mmarek@suse.cz>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace
Pull ftrace self-test updates from Steven Rostedt:
"Updates for the ftrace self tests:
- Added kprobes on ftrace testcase
- Sort test cases
- Add file to hold helper functions
- Use logfile name supported by busybox's mktemp
- Clear trace buffer after running kprobe test
- Fix show descriptions when run on dash shell
- Add --verbose option for showing echo output"
* tag 'ftracetest-3.19' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace:
ftracetest: Add --verbose option for showing echo output
ftracetest: Fix to show descriptions on dash
ftracetest: Add basic event tracing test cases
ftracetest: Clear trace buffer after running kprobe testcases
ftracetest: Use logfile name supported by busybox's mktemp
ftracetest: Add a couple of ftrace test cases
ftracetest: Add functions file that holds helper functions
ftracetest: Sort testcases
ftracetest: Add kprobes on ftrace testcase
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Add --verbose/-v option for showing echo output in testcases.
This is good for checking the progress of testcases which
take a longer time to run.
To implement this feature, all the testcase failures are
captured in ftracetest and send signal to set SIG_RESULT=FAIL.
Link: http://lkml.kernel.org/r/20141204194123.7376.22964.stgit@localhost.localdomain
Suggested-by: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
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The ftracetest doesn't show testcase's descriptions when
it is executed on dash. This fixes that to show the
descriptions on dash correctly by passing it via a variable
instead of directly passing the grep command output.
Link: http://lkml.kernel.org/r/20141204194116.7376.78940.stgit@localhost.localdomain
Signed-off-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
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This patch adds basic event tracing tests like enable/disable with
top-level, subsystem-level and individual event files.
# ./ftracetest
=== Ftrace unit tests ===
[1] Basic trace file check [PASS]
[2] Basic trace clock test [PASS]
[3] Basic event tracing check [PASS]
[4] Basic test for tracers [PASS]
[5] event tracing - enable/disable with top level files [PASS]
[6] event tracing - enable/disable with subsystem level files [PASS]
[7] event tracing - enable/disable with event level files [PASS]
[8] ftrace - function graph filters [PASS]
[9] ftrace - function profiler with function tracing [PASS]
[10] ftrace - function graph filters with stack tracer [PASS]
[11] Kretprobe dynamic event with arguments [PASS]
[12] Kprobe dynamic event - busy event check [PASS]
[13] Kprobe dynamic event with arguments [PASS]
[14] Kprobe dynamic event - adding and removing [PASS]
# of passed: 14
# of failed: 0
# of unresolved: 0
# of untested: 0
# of unsupported: 0
# of xfailed: 0
# of undefined(test bug): 0
Link: http://lkml.kernel.org/r/1415239470-28705-3-git-send-email-namhyung@kernel.org
Acked-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
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The kprobe testcases create, use and delete dynamic events during the
test but didn't clear the trace buffer so it'll leave the result after
it finishes.
# ./ftracetest
...
# cat trace
# tracer: nop
#
# entries-in-buffer/entries-written: 2/2 #P:12
#
# _-----=> irqs-off
# / _----=> need-resched
# | / _---=> hardirq/softirq
# || / _--=> preempt-depth
# ||| / delay
# TASK-PID CPU# |||| TIMESTAMP FUNCTION
# | | | |||| | |
ftracetest-26474 [009] d..1 79417.143782: Unknown type 1099
ftracetest-26498 [009] d..1 79417.208034: Unknown type 1101
Link: http://lkml.kernel.org/r/1415239470-28705-2-git-send-email-namhyung@kernel.org
Acked-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
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When I run the ftracetest in a busybox docker container, I saw
following error. Make the logfile template to comply with busybox's
mktemp. It also keep the logfiles under the logs directory.
# /linux/tools/testing/selftests/ftrace/ftracetest
=== Ftrace unit tests ===
mktemp: unrecognized option `--tmpdir=/linux/tools/testing/selftests/ftrace/logs/20141106-003624/'
BusyBox v1.22.1 (2014-05-22 23:22:11 UTC) multi-call binary.
Usage: mktemp [-dt] [-p DIR] [TEMPLATE]
Create a temporary file with name based on TEMPLATE and print its name.
TEMPLATE must end with XXXXXX (e.g. [/dir/]nameXXXXXX).
Without TEMPLATE, -t tmp.XXXXXX is assumed.
-d Make directory, not file
-q Fail silently on errors
-t Prepend base directory name to TEMPLATE
-p DIR Use DIR as a base directory (implies -t)
-u Do not create anything; print a name
Base directory is: -p DIR, else $TMPDIR, else /tmp
[1] Basic trace file check/linux/tools/testing/selftests/ftrace/ftracetest: line 244: can't create : nonexistent directory
/linux/tools/testing/selftests/ftrace/ftracetest: line 244: can't create : nonexistent directory
[FAIL]
Link: http://lkml.kernel.org/r/1415239470-28705-1-git-send-email-namhyung@kernel.org
Acked-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
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Added three test cases to get the feel of adding tests to ftracetest.
The three cases are:
function profiling test, to make sure function profiling still works
with function tracing (was a regression)
function graph filter test to make sure that function graph filtering works.
function graph filter with stack tracing test to make sure that the function
graph filter does filter and also continues to filter when another function tracer
is running (like the stack tracer)
Link: http://lkml.kernel.org/r/20141103212737.696365174@goodmis.org
Link: http://lkml.kernel.org/r/20141104153028.602754370@goodmis.org
Acked-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Acked-by: Namhyung Kim <namhyung@kernel.org>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
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Created the file tools/testing/ftrace/test.d/functions that will
hold helper functions.
Current helper functions include:
Add clear_trace() helper to reset the trace file
Used as a descriptive name to show that "echo > trace" is clearing
the trace file.
Add disable/enable_tracing() helper calls
Add calls that disable and enable tracing respectively by echoing
0 or 1 into tracing_on.
Add helper reset_tracer() function
Add a helper function reset_tracer() that will clear the current_tracer
(echo nop > current_tracer).
Link: http://lkml.kernel.org/r/20141103212737.696365174@goodmis.org
Link: http://lkml.kernel.org/r/20141104153028.465517119@goodmis.org
Acked-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Acked-by: Namhyung Kim <namhyung@kernel.org>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
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Make sure the order of the executed testcases is always the same.
Link: http://lkml.kernel.org/p/1413802323-5297-3-git-send-email-heiko.carstens@de.ibm.com
Acked-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
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Add a kprobes on ftrace testcase. The testcase verifies that
- enabling and disabling function tracing works on a function which
already contains a dynamic kprobe
- adding and removing a dynamic kprobe works on a function which is
already enabled for function tracing
Link: http://lkml.kernel.org/p/1413802323-5297-2-git-send-email-heiko.carstens@de.ibm.com
Acked-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu into core/rcu
Pull RCU updates from Paul E. McKenney:
- Streamline RCU's use of per-CPU variables, shifting from "cpu"
arguments to functions to "this_"-style per-CPU variable accessors.
- Signal-handling RCU updates.
- Real-time updates.
- Torture-test updates.
- Miscellaneous fixes.
- Documentation updates.
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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'fixes.2014.11.13a', 'signal.2014.10.29a' and 'rt.2014.10.29a' into HEAD
cpu.2014.11.03a: Changes for per-CPU variables.
doc.2014.11.13a: Documentation updates.
fixes.2014.11.13a: Miscellaneous fixes.
signal.2014.10.29a: Signal changes.
rt.2014.10.29a: Real-time changes.
torture.2014.11.03a: torture-test changes.
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PREEMPT_RCU and TREE_PREEMPT_RCU serve the same function after
TINY_PREEMPT_RCU has been removed. This patch removes TREE_PREEMPT_RCU
and uses PREEMPT_RCU config option in its place.
Signed-off-by: Pranith Kumar <bobby.prani@gmail.com>
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
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Rename CONFIG_RCU_BOOST_PRIO to CONFIG_RCU_KTHREAD_PRIO and use this
value for both the per-CPU kthreads (rcuc/N) and the rcu boosting
threads (rcub/n).
Also, create the module_parameter rcutree.kthread_prio to be used on
the kernel command line at boot to set a new value (rcutree.kthread_prio=N).
Signed-off-by: Clark Williams <clark.williams@gmail.com>
[ paulmck: Ported to rcu/dev, applied Paul Bolle and Peter Zijlstra feedback. ]
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
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The CONFIG_RCU_CPU_STALL_VERBOSE Kconfig parameter causes preemptible
RCU's CPU stall warnings to dump out any preempted tasks that are blocking
the current RCU grace period. This information is useful, and the default
has been CONFIG_RCU_CPU_STALL_VERBOSE=y for some years. It is therefore
time for this commit to remove this Kconfig parameter, so that future
kernel builds will always act as if CONFIG_RCU_CPU_STALL_VERBOSE=y.
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
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Now that we have removed configs based on kernel version, we can also remove the
kversion parameter in kvm.sh.
Signed-off-by: Pranith Kumar <bobby.prani@gmail.com>
Reviewed-by: Josh Triplett <josh@joshtriplett.org>
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
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Remove rcutorture configuration files which are no longer necessary.
Signed-off-by: Pranith Kumar <bobby.prani@gmail.com>
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
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Add config and boot parameters to enable the self tests in rcutorture testing.
Signed-off-by: Pranith Kumar <bobby.prani@gmail.com>
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
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The rcutorture scripts create a qemu-cmd script containing the actual
qemu command. However, this command references the build directory,
which will be overwritten by later builds. This commit therefore runs
the kernel out of the results directory so that less hand-editing is
required to re-run a previous test.
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Reviewed-by: Pranith Kumar <bobby.prani@gmail.com>
Reviewed-by: Josh Triplett <josh@joshtriplett.org>
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Pull networking fixes from David Miller:
1) sunhme driver lacks DMA mapping error checks, based upon a report by
Meelis Roos.
2) Fix memory leak in mvpp2 driver, from Sudip Mukherjee.
3) DMA memory allocation sizes are wrong in systemport ethernet driver,
fix from Florian Fainelli.
4) Fix use after free in mac80211 defragmentation code, from Johannes
Berg.
5) Some networking uapi headers missing from Kbuild file, from Stephen
Hemminger.
6) TUN driver gets csum_start offset wrong when VLAN accel is enabled,
and macvtap has a similar bug, from Herbert Xu.
7) Adjust several tunneling drivers to set dev->iflink after registry,
because registry sets that to -1 overwriting whatever we did. From
Steffen Klassert.
8) Geneve forgets to set inner tunneling type, causing GSO segmentation
to fail on some NICs. From Jesse Gross.
9) Fix several locking bugs in stmmac driver, from Fabrice Gasnier and
Giuseppe CAVALLARO.
10) Fix spurious timeouts with NewReno on low traffic connections, from
Marcelo Leitner.
11) Fix descriptor updates in enic driver, from Govindarajulu
Varadarajan.
12) PPP calls bpf_prog_create() with locks held, which isn't kosher.
Fix from Takashi Iwai.
13) Fix NULL deref in SCTP with malformed INIT packets, from Daniel
Borkmann.
14) psock_fanout selftest accesses past the end of the mmap ring, fix
from Shuah Khan.
15) Fix PTP timestamping for VLAN packets, from Richard Cochran.
16) netlink_unbind() calls in netlink pass wrong initial argument, from
Hiroaki SHIMODA.
17) vxlan socket reuse accidently reuses a socket when the address
family is different, so we have to explicitly check this, from
Marcelo Lietner.
18) Fix missing include in nft_reject_bridge.c breaking the build on ppc
and other architectures, from Guenter Roeck.
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (75 commits)
vxlan: Do not reuse sockets for a different address family
smsc911x: power-up phydev before doing a software reset.
lib: rhashtable - Remove weird non-ASCII characters from comments
net/smsc911x: Fix delays in the PHY enable/disable routines
net/smsc911x: Fix rare soft reset timeout issue due to PHY power-down mode
netlink: Properly unbind in error conditions.
net: ptp: fix time stamp matching logic for VLAN packets.
cxgb4 : dcb open-lldp interop fixes
selftests/net: psock_fanout seg faults in sock_fanout_read_ring()
net: bcmgenet: apply MII configuration in bcmgenet_open()
net: bcmgenet: connect and disconnect from the PHY state machine
net: qualcomm: Fix dependency
ixgbe: phy: fix uninitialized status in ixgbe_setup_phy_link_tnx
net: phy: Correctly handle MII ioctl which changes autonegotiation.
ipv6: fix IPV6_PKTINFO with v4 mapped
net: sctp: fix memory leak in auth key management
net: sctp: fix NULL pointer dereference in af->from_addr_param on malformed packet
net: ppp: Don't call bpf_prog_create() in ppp_lock
net/mlx4_en: Advertize encapsulation offloads features only when VXLAN tunnel is set
cxgb4 : Fix bug in DCB app deletion
...
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The while loop in sock_fanout_read_ring() checks mmap region
bounds after access, causing it to segfault. Fix it to check
count before accessing header->tp_status. This problem can be
reproduced consistently when the test in run as follows:
make -C tools/testing/selftests TARGETS=net run_tests
or
make run_tests from tools/testing/selftests
or
make run_test from tools/testing/selftests/net
Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace
Pull ftracetest fix from Steven Rostedt:
"Running the ftracetests on a machine that had the debugfs file system
mounted in two locations caused the ftracetests to fail. This is
because the ftracetests script does a grep of the /proc/mounts file to
find where the debugfs file system is mounted. If it is mounted
twice, then the grep returns two lines instead of just one. This
causes the ftracetests to get confused and fail.
Use "head -1" to only return the first mount point for debugfs"
* tag 'ftracetest-3.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace:
ftracetest: Take the first debugfs mount found
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Running ftracetests on a box that mounted debugfs in two locations
made the ftracetests fail. This is because the tests uses a grep
of debugfs from the /proc/mounts file to find the debugfs mount
point, and then appends "/tracing" to that string to get the tracing
directory.
If the debugfs directory is mounted twice, then that grep will return
two answers and appending "/tracing" to a string with two lines will
not work.
Use "head -1" to only take the first mount point found.
Acked-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull RCU updates from Ingo Molnar:
"The main changes in this cycle were:
- changes related to No-CBs CPUs and NO_HZ_FULL
- RCU-tasks implementation
- torture-test updates
- miscellaneous fixes
- locktorture updates
- RCU documentation updates"
* 'core-rcu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (81 commits)
workqueue: Use cond_resched_rcu_qs macro
workqueue: Add quiescent state between work items
locktorture: Cleanup header usage
locktorture: Cannot hold read and write lock
locktorture: Fix __acquire annotation for spinlock irq
locktorture: Support rwlocks
rcu: Eliminate deadlock between CPU hotplug and expedited grace periods
locktorture: Document boot/module parameters
rcutorture: Rename rcutorture_runnable parameter
locktorture: Add test scenario for rwsem_lock
locktorture: Add test scenario for mutex_lock
locktorture: Make torture scripting account for new _runnable name
locktorture: Introduce torture context
locktorture: Support rwsems
locktorture: Add infrastructure for torturing read locks
torture: Address race in module cleanup
locktorture: Make statistics generic
locktorture: Teach about lock debugging
locktorture: Support mutexes
locktorture: Add documentation
...
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git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu into core/rcu
Pull additional commits for locktorture, from Paul E. McKenney.
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Add a "rw_lock" torture test to stress kernel rwlocks and their irq
variant. Reader critical regions are 5x longer than writers. As such
a similar ratio of lock acquisitions is seen in the statistics. In the
case of massive contention, both hold the lock for 1/10 of a second.
Signed-off-by: Davidlohr Bueso <dbueso@suse.de>
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu into core/rcu
Pull the v3.18 RCU changes from Paul E. McKenney:
"
* Update RCU documentation. These were posted to LKML at
https://lkml.org/lkml/2014/8/28/378.
* Miscellaneous fixes. These were posted to LKML at
https://lkml.org/lkml/2014/8/28/386. An additional fix that
eliminates a documented (but now inconvenient) deadlock between
RCU hotplug and expedited grace periods was posted at
https://lkml.org/lkml/2014/8/28/573.
* Changes related to No-CBs CPUs and NO_HZ_FULL. These were posted
to LKML at https://lkml.org/lkml/2014/8/28/412.
* Torture-test updates. These were posted to LKML at
https://lkml.org/lkml/2014/8/28/546 and at
https://lkml.org/lkml/2014/9/11/1114.
* RCU-tasks implementation. These were posted to LKML at
https://lkml.org/lkml/2014/8/28/540.
"
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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This commit changes rcutorture_runnable to torture_runnable, which is
consistent with the names of the other parameters and is a bit shorter
as well.
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
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Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
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Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
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Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
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rcu-tasks.2014.09.10a: Add RCU-tasks flavor of RCU.
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Although the test cases have been added, they must be specified explicitly
via the kvm.sh --configs argument in order to run them. This commit
therefore adds the RCU-tasks tests to the CFLIST so that they will be
run automatically by default.
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
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This commit adds the TASKS01 and TASKS02 Kconfig fragments, along with
the corresponding TASKS01.boot and TASKS02.boot boot-parameter files
specifying that rcutorture test RCU-tasks instead of the default flavor.
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
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When starting a new torture run while an old one is still running, both
qemu processes can be outputting to the same console.out file. This can
cause quite a bit of confusion, so this commit checks for this situation,
which is normally indicated by nul bytes in the console output. Yes,
if your new run uses up an exact number of blocks of the file, this
check will be ineffective, but the odds are not bad.
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Reviewed-by: Pranith Kumar <bobby.prani@gmail.com>
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Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Reviewed-by: Pranith Kumar <bobby.prani@gmail.com>
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This commit specifies offstack cpumasks in TREE07 in order to catch
references to unallocated cpumask_var_t variables.
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Reviewed-by: Pranith Kumar <bobby.prani@gmail.com>
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Setting CONFIG_MAXSMP=y causes cpumasks to be moved offstack, which
introduces the possibility of NULL cpumask_var_t pointers. This commit
therefore enables CONFIG_MAXSMP=y in TREE01 to increase test coverage.
However, because CONFIG_MAXSMP=y implies 8192 CPUs, we need to use
the maxcpus= boot parameter to limit the number of CPUs to something
reasonable, which in turn requires updating the scripts to handle this.
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Reviewed-by: Pranith Kumar <bobby.prani@gmail.com>
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The current set of tests covers only cases where either all possible CPUs
are nohz_full= CPUs or none of them are. Because there have been some
recent bug escapes in cases where only some of the CPUs are nohz_full=
CPUs, this commit add a configuration where only half of the CPUs are
nohz_full= CPUs.
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Reviewed-by: Pranith Kumar <bobby.prani@gmail.com>
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This commit tries to get people into the correct directory before
creating the initrd directory.
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Reviewed-by: Pranith Kumar <bobby.prani@gmail.com>
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