Jeff Kirsher says:
====================
Intel Wired LAN Driver Updates 2017-06-06
This series contains fixes to i40e and i40evf only.
Mauro S. M. Rodrigues fixes a flood in the kernel log which was introduced
in a previous commit because of a mistaken substitution of __I40E_VSI_DOWN
instead of __I40E_DOWN when testing the state of the PF.
Björn Töpel fixes an issue introduced in a previous commit where the
offset was incorrect and could lead to data corruption for architectures
using PAGE_SIZE larger than 8191. Fixed the issue by updating the
page_offset correctly using the proper setting for truesize.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
When direct issue is done on request picked up from plug list,
the hctx need to be updated with the actual hw queue, otherwise
wrong hctx is used and may hurt performance, especially when
wrong SRCU readlock is acquired/released
Reported-by: Bart Van Assche <bart.vanassche@sandisk.com>
Signed-off-by: Ming Lei <ming.lei@redhat.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
This reverts commit b699d00358.
As per Eric Dumazet, the pskb_may_pull() is a NOP in this
particular case, so the 'iph' reload is unnecessary.
Signed-off-by: David S. Miller <davem@davemloft.net>
This fixes a regression introduced by ebc9446135 ("drm:
convert drivers to use drm_of_find_panel_or_bridge") that was
recently merged, causing HDMI output to not work.
For the kirin driver, the port value should be 1 instead of 0,
so this oneline patch fixes it and gets graphics working again.
Cc: Rob Herring <robh@kernel.org>
Cc: Archit Taneja <architt@codeaurora.org>
Cc: Philipp Zabel <p.zabel@pengutronix.de>
Cc: Maxime Ripard <maxime.ripard@free-electrons.com>
Cc: Sean Paul <seanpaul@chromium.org>
Cc: Dave Airlie <airlied@gmail.com>
Cc: Xinliang Liu <xinliang.liu@linaro.org>
Fix-suggested-by: Rob Herring <robh@kernel.org>
Signed-off-by: John Stultz <john.stultz@linaro.org>
Reviewed-by: Xinliang Liu <xinliang.liu@linaro.org>
Signed-off-by: Sean Paul <seanpaul@chromium.org>
Link: http://patchwork.freedesktop.org/patch/msgid/1495557626-25285-1-git-send-email-john.stultz@linaro.org
Fix a bug where the copying of scatterlist buffers incorrectly
ignored bytes to skip in a scatterlist and ended 1 byte short.
This fixes testmgr hmac and hash test failures currently obscured
by hash import/export not being supported.
Fixes: abefd6741d ("staging: ccree: introduce CryptoCell HW driver").
Signed-off-by: Gilad Ben-Yossef <gilad@benyossef.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
WARNING: CPU: 3 PID: 2840 at arch/x86/kvm/vmx.c:10966 nested_vmx_vmexit+0xdcd/0xde0 [kvm_intel]
CPU: 3 PID: 2840 Comm: qemu-system-x86 Tainted: G OE 4.12.0-rc3+ #23
RIP: 0010:nested_vmx_vmexit+0xdcd/0xde0 [kvm_intel]
Call Trace:
? kvm_check_async_pf_completion+0xef/0x120 [kvm]
? rcu_read_lock_sched_held+0x79/0x80
vmx_queue_exception+0x104/0x160 [kvm_intel]
? vmx_queue_exception+0x104/0x160 [kvm_intel]
kvm_arch_vcpu_ioctl_run+0x1171/0x1ce0 [kvm]
? kvm_arch_vcpu_load+0x47/0x240 [kvm]
? kvm_arch_vcpu_load+0x62/0x240 [kvm]
kvm_vcpu_ioctl+0x384/0x7b0 [kvm]
? kvm_vcpu_ioctl+0x384/0x7b0 [kvm]
? __fget+0xf3/0x210
do_vfs_ioctl+0xa4/0x700
? __fget+0x114/0x210
SyS_ioctl+0x79/0x90
do_syscall_64+0x81/0x220
entry_SYSCALL64_slow_path+0x25/0x25
This is triggered occasionally by running both win7 and win2016 in L2, in
addition, EPT is disabled on both L1 and L2. It can't be reproduced easily.
Commit 0b6ac343fc (KVM: nVMX: Correct handling of exception injection) mentioned
that "KVM wants to inject page-faults which it got to the guest. This function
assumes it is called with the exit reason in vmcs02 being a #PF exception".
Commit e011c663 (KVM: nVMX: Check all exceptions for intercept during delivery to
L2) allows to check all exceptions for intercept during delivery to L2. However,
there is no guarantee the exit reason is exception currently, when there is an
external interrupt occurred on host, maybe a time interrupt for host which should
not be injected to guest, and somewhere queues an exception, then the function
nested_vmx_check_exception() will be called and the vmexit emulation codes will
try to emulate the "Acknowledge interrupt on exit" behavior, the warning is
triggered.
Reusing the exit reason from the L2->L0 vmexit is wrong in this case,
the reason must always be EXCEPTION_NMI when injecting an exception into
L1 as a nested vmexit.
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Radim Krčmář <rkrcmar@redhat.com>
Signed-off-by: Wanpeng Li <wanpeng.li@hotmail.com>
Fixes: e011c663b9 ("KVM: nVMX: Check all exceptions for intercept during delivery to L2")
Signed-off-by: Radim Krčmář <rkrcmar@redhat.com>
native_safe_halt enables interrupts, and you just shouldn't
call rcu_irq_enter() with interrupts enabled. Reorder the
call with the following local_irq_disable() to respect the
invariant.
Reported-by: Ross Zwisler <ross.zwisler@linux.intel.com>
Cc: stable@vger.kernel.org
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Acked-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Tested-by: Wanpeng Li <wanpeng.li@hotmail.com>
Signed-off-by: Radim Krčmář <rkrcmar@redhat.com>
Commit 8d911904f3 ('powerpc/perf: Add restrictions to PMC5 in power9 DD1')
was added to restrict the use of PMC5 in Power9 DD1. Intention was to disable
the use of PMC5 using raw event code. But instead of updating the
power9_isa207_pmu structure (used on DD1), the commit incorrectly updated the
power9_pmu structure. Fix it.
Fixes: 8d911904f3 ("powerpc/perf: Add restrictions to PMC5 in power9 DD1")
Reported-by: Shriya <shriyak@linux.vnet.ibm.com>
Signed-off-by: Madhavan Srinivasan <maddy@linux.vnet.ibm.com>
Tested-by: Shriya <shriyak@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
In commit 8c27226119 ("powerpc/numa: Enable USE_PERCPU_NUMA_NODE_ID"), we
switched to the generic implementation of cpu_to_node(), which uses a percpu
variable to hold the NUMA node for each CPU.
Unfortunately we neglected to notice that we use cpu_to_node() in the allocation
of our percpu areas, leading to a chicken and egg problem. In practice what
happens is when we are setting up the percpu areas, cpu_to_node() reports that
all CPUs are on node 0, so we allocate all percpu areas on node 0.
This is visible in the dmesg output, as all pcpu allocs being in group 0:
pcpu-alloc: [0] 00 01 02 03 [0] 04 05 06 07
pcpu-alloc: [0] 08 09 10 11 [0] 12 13 14 15
pcpu-alloc: [0] 16 17 18 19 [0] 20 21 22 23
pcpu-alloc: [0] 24 25 26 27 [0] 28 29 30 31
pcpu-alloc: [0] 32 33 34 35 [0] 36 37 38 39
pcpu-alloc: [0] 40 41 42 43 [0] 44 45 46 47
To fix it we need an early_cpu_to_node() which can run prior to percpu being
setup. We already have the numa_cpu_lookup_table we can use, so just plumb it
in. With the patch dmesg output shows two groups, 0 and 1:
pcpu-alloc: [0] 00 01 02 03 [0] 04 05 06 07
pcpu-alloc: [0] 08 09 10 11 [0] 12 13 14 15
pcpu-alloc: [0] 16 17 18 19 [0] 20 21 22 23
pcpu-alloc: [1] 24 25 26 27 [1] 28 29 30 31
pcpu-alloc: [1] 32 33 34 35 [1] 36 37 38 39
pcpu-alloc: [1] 40 41 42 43 [1] 44 45 46 47
We can also check the data_offset in the paca of various CPUs, with the fix we
see:
CPU 0: data_offset = 0x0ffe8b0000
CPU 24: data_offset = 0x1ffe5b0000
And we can see from dmesg that CPU 24 has an allocation on node 1:
node 0: [mem 0x0000000000000000-0x0000000fffffffff]
node 1: [mem 0x0000001000000000-0x0000001fffffffff]
Cc: stable@vger.kernel.org # v3.16+
Fixes: 8c27226119 ("powerpc/numa: Enable USE_PERCPU_NUMA_NODE_ID")
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Reviewed-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
A disorder is found in some ALC269 quirk entries for ASUS (1043:xxxx),
which should have been sorted in PCI SSID order. Rearrange them, so
that I won't overlook the already existing entry like I did a couple
of times in the past...
Signed-off-by: Takashi Iwai <tiwai@suse.de>
The ASUS X705UD laptop requires the known fixup ALC256_FIXUP_ASUS_MIC
in order to fix headphone jack sensing and to enable use of the internal
microphone.
Unfortunately jack sensing for the headset mic is still not working.
[rearranged the position to keep the PCI SSID order -- tiwai]
Signed-off-by: Chris Chiu <chiu@endlessm.com>
Signed-off-by: Daniel Drake <drake@endlessm.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
In f8b45b74cc ("i40e/i40evf: Use build_skb to build frames")
i40e_build_skb updates the page_offset field with an incorrect offset,
which can lead to data corruption. This patch updates page_offset
correctly, by properly setting truesize.
Note that the bug only appears on architectures where PAGE_SIZE is
8192 or larger.
Fixes: f8b45b74cc ("i40e/i40evf: Use build_skb to build frames")
Signed-off-by: Björn Töpel <bjorn.topel@intel.com>
Acked-by: Alexander Duyck <alexander.h.duyck@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Commit 0da36b9774 ("i40e: use DECLARE_BITMAP for state fields")
introduced changes in the way i40e works with state flags converting
them to bitmaps using kernel bitmap API. This change introduced a
regression due to a mistaken substitution using __I40E_VSI_DOWN instead
of __I40E_DOWN when testing state of a PF at i40e_reset_subtask()
function. This caused a flood in the kernel log with the follow message:
[49.013] i40e 0002:01:00.0: bad reset request 0x00000020
Commit d19cb64b92 ("i40e: separate PF and VSI state flags")
also introduced some misuse of the VSI and PF flags, so both could be
considered as the offenders.
This patch simply fixes the flags where it makes sense by changing
__I40E_VSI_DOWN to __I40E_DOWN.
Fixes: 0da36b9774 ("i40e: use DECLARE_BITMAP for state fields")
Fixes: d19cb64b92 ("i40e: separate PF and VSI state flags")
Reviewed-by: "Guilherme G. Piccoli" <gpiccoli@linux.vnet.ibm.com>
Signed-off-by: "Mauro S. M. Rodrigues" <maurosr@linux.vnet.ibm.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
During an eeh call to cxl_remove can result in double free_irq of
psl,slice interrupts. This can happen if perst_reloads_same_image == 1
and call to cxl_configure_adapter() fails during slot_reset
callback. In such a case we see a kernel oops with following back-trace:
Oops: Kernel access of bad area, sig: 11 [#1]
Call Trace:
free_irq+0x88/0xd0 (unreliable)
cxl_unmap_irq+0x20/0x40 [cxl]
cxl_native_release_psl_irq+0x78/0xd8 [cxl]
pci_deconfigure_afu+0xac/0x110 [cxl]
cxl_remove+0x104/0x210 [cxl]
pci_device_remove+0x6c/0x110
device_release_driver_internal+0x204/0x2e0
pci_stop_bus_device+0xa0/0xd0
pci_stop_and_remove_bus_device+0x28/0x40
pci_hp_remove_devices+0xb0/0x150
pci_hp_remove_devices+0x68/0x150
eeh_handle_normal_event+0x140/0x580
eeh_handle_event+0x174/0x360
eeh_event_handler+0x1e8/0x1f0
This patch fixes the issue of double free_irq by checking that
variables that hold the virqs (err_hwirq, serr_hwirq, psl_virq) are
not '0' before un-mapping and resetting these variables to '0' when
they are un-mapped.
Cc: stable@vger.kernel.org
Signed-off-by: Vaibhav Jain <vaibhav@linux.vnet.ibm.com>
Reviewed-by: Andrew Donnellan <andrew.donnellan@au1.ibm.com>
Acked-by: Frederic Barrat <fbarrat@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Currently tsk->thread.load_tm is not initialized in the task creation
and can contain garbage on a new task.
This is an undesired behaviour, since it affects the timing to enable
and disable the transactional memory laziness (disabling and enabling
the MSR TM bit, which affects TM reclaim and recheckpoint in the
scheduling process).
Fixes: 5d176f751e ("powerpc: tm: Enable transactional memory (TM) lazily for userspace")
Cc: stable@vger.kernel.org # v4.9+
Signed-off-by: Breno Leitao <leitao@debian.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
The description of the CSI_SEL bit in the i.MX6 reference manual is
incorrect. It states "This bit defines which CSI is the input to the
IC. This bit is effective only if IC_INPUT is bit cleared".
From experiment it was found this is in fact not correct. The CSI_SEL
bit selects which CSI is input to _both_ the VDIC _and_ the IC. If the
IC_INPUT bit is set so that the IC is receiving from the VDIC, the IC
ignores the CSI_SEL bit, but CSI_SEL still selects which CSI the VDIC
receives from in that case.
Signed-off-by: Marek Vasut <marex@denx.de>
Signed-off-by: Steve Longerbeam <steve_longerbeam@mentor.com>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Not having an endpoint bound in DT should not cause a failure here,
there are fallbacks. So explicitly accept a missing endpoint.
This behavior change was introduced by refactoring in drm_of parsing
code and it should not require dts changes.
In particular this fixes imx6qdl-sabreauto boards.
Link: https://lists.freedesktop.org/archives/dri-devel/2017-May/141233.html
Fixes: ebc9446135 ("drm: convert drivers to use drm_of_find_panel_or_bridge")
Signed-off-by: Leonard Crestez <leonard.crestez@nxp.com>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
By setting the SFTRST bit, the PRE will be held in the lowest power state
with clocks to the internal blocks gated. When external clock gating is
used (from the external clock controller, or by setting the CLKGATE bit)
the PRE will sporadically fail to start.
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Fixes: d2a3423258 ("gpu: ipu-v3: add driver for Prefetch Resolve Engine")
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
We used to extract PRIbits from the ICH_VT_EL2 which was the upper field
in the register word, so a mask wasn't necessary, but as we switched to
looking at PREbits, which is bits 26 through 28 with the PRIbits field
being potentially non-zero, we really need to mask off the field value,
otherwise fun things may happen.
Signed-off-by: Christoffer Dall <cdall@linaro.org>
Acked-by: Marc Zyngier <marc.zyngier@arm.com>
Core Changes:
- Grab locks in drm_atomic_helper_resume() (Daniel)
- Fix oops when unplugging USB device (expand cleanup in drm_unplug_dev) (Hans)
Driver Changes:
- rockchip: Don't output 10-bit format to 8-bit encoders (Mark)
Cc: Mark yao <mark.yao@rock-chips.com>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: Hans de Goede <hdegoede@redhat.com>
* tag 'drm-misc-fixes-2017-06-02' of git://anongit.freedesktop.org/git/drm-misc:
drm: Fix oops + Xserver hang when unplugging USB drm devices
drm: Fix locking in drm_atomic_helper_resume
drm/rockchip: Correct vop out_mode configure
4 nouveau regression fixes.
* 'linux-4.12' of git://github.com/skeggsb/linux:
drm/nouveau/tmr: fully separate alarm execution/pending lists
drm/nouveau: enable autosuspend only when it'll actually be used
drm/nouveau: replace multiple open-coded runpm support checks with function
drm/nouveau/kms/nv50: add null check before pointer dereference
Reusing the list_head for both is a bad idea. Callback execution is done
with the lock dropped so that alarms can be rescheduled from the callback,
which means that with some unfortunate timing, lists can get corrupted.
The execution list should not require its own locking, the single function
that uses it can only be called from a single context.
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Cc: stable@vger.kernel.org
Add null check before dereferencing pointer asyc
Addresses-Coverity-ID: 1397932
Signed-off-by: Gustavo A. R. Silva <garsilva@embeddedor.com>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
The new per-cpu counter for writes_pending is initialised in
md_alloc(), which is not called by dm-raid.
So dm-raid fails when md_write_start() is called.
Move the initialization to the personality modules
that need it. This way it is always initialised when needed,
but isn't unnecessarily initialized (requiring memory allocation)
when the personality doesn't use writes_pending.
Reported-by: Heinz Mauelshagen <heinzm@redhat.com>
Fixes: 4ad23a9764 ("MD: use per-cpu counter for writes_pending")
Signed-off-by: NeilBrown <neilb@suse.com>
Signed-off-by: Shaohua Li <shli@fb.com>
Pull cgroup fixes from Tejun Heo:
"Two cgroup fixes. One to address RCU delay of cpuset removal affecting
userland visible behaviors. The other fixes a race condition between
controller disable and cgroup removal"
* 'for-4.12-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup:
cpuset: consider dying css as offline
cgroup: Prevent kill_css() from being called more than once
Pull libata fixes from Tejun Heo:
- Revert of sata_mv devm_ioremap_resource() conversion. It made init
fail if there are overlapping resources which led to detection
failures on some setups.
- A workaround for an Acer laptop which sometimes reports corrupt port
map.
- Other non-critical fixes.
* 'for-4.12-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/libata:
libata: fix error checking in in ata_parse_force_one()
Revert "ata: sata_mv: Convert to devm_ioremap_resource()"
ata: libahci: properly propagate return value of platform_get_irq()
ata: sata_rcar: Handle return value of clk_prepare_enable
ahci: Acer SA5-271 SSD Not Detected Fix
Sending host command with CMD_WANT_SKB flag demands the release of the
response buffer with iwl_free_resp function.
The patch adds the memory release in all the relevant places
Signed-off-by: Shahar S Matityahu <shahar.s.matityahu@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
In a previous commit, we removed support for API versions earlier than
22 for these NICs. By mistake, the *_UCODE_API_MIN definitions were
set to 17. Fix that.
Fixes: 4b87e5af63 ("iwlwifi: remove support for fw older than -17 and -22")
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Clear the struct so that all reserved fields are zero when we
send the struct down to the device.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
The iwl_mvm_remove_sta_key() function handles removing a key when the
sta doesn't exist anymore. Mistakenly, this was changed to return an
error while fixing another bug.
If the mvm_sta doesn't exist, we continue normally, but just don't try
to remove the igtk key.
Fixes: cd4d23c1ea ("iwlwifi: mvm: Fix removal of IGTK")
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
We only need to handle d0i3 entry and exit during suspend resume if
system_pm is set to IWL_PLAT_PM_MODE_D0I3, otherwise d0i3 entry
failures will cause suspend to fail.
This fixes https://bugzilla.kernel.org/show_bug.cgi?id=194791
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
When we want to stop the recording of the firmware debug
and restart it later without reloading the firmware we
don't need to resend the configuration that comes with
host commands.
Sending those commands confused the hardware and led to
an NMI 0x66.
Change the flow as following:
* read the relevant registers (DBGC_IN_SAMPLE, DBGC_OUT_CTRL)
* clear those registers
* wait for the hardware to complete its write to the buffer
* get the data
* restore the value of those registers (to restart the
recording)
For early start (where the configuration is already
compiled in the firmware), we don't need to set those
registers after the firmware has been loaded, but only
when we want to restart the recording without having
restarted the firmware.
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
The ucode_loaded check should be under the mutex, since it can
otherwise change state after we looked at it and before we got
the mutex. Fix that.
Fixes: 5c89e7bc55 ("iwlwifi: mvm: add registration to cooling device")
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Allow working IBSS also when working in DQA mode.
This is done by setting it to treat the queues the
same as a BSS AP treats the queues.
Fixes: 7948b87308 ("iwlwifi: mvm: enable dynamic queue allocation mode")
Signed-off-by: Liad Kaufman <liad.kaufman@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
During d0i3 flow we flush all the queue except from the command queue.
Currently, in this flow the command queue is hard coded to 9.
In DQA the command queue number has changed from 9 to 0.
Fix that.
This fixes a problem in runtime PM resume flow.
Fixes: 097129c9e6 ("iwlwifi: mvm: move cmd queue to be #0 in dqa mode")
Signed-off-by: Haim Dreyfuss <haim.dreyfuss@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Up until now, the driver was comparing the rate reported by the FW and
the rate of the latest LQ command to avoid processing data belonging
to the old LQ command. Recently, FW changed the meaning of the initial
rate field in tx response and it holds the actual rate (which is not
necessarily the initial rate of LQ's rate table). Use instead LQ cmd
color to be able to filter out tx responses/BA notifications which
where sent during earlier LQ commands' time frame.
This fixes some throughput degradation in noisy environments.
Signed-off-by: Gregory Greenman <gregory.greenman@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Pull ARM fixes from Russell King:
"Three fixes this time around:
- Two fixes for noMMU, fixing the decompressor header layout, and
preventing a build error with some configurations.
- Fixing the hyp-stub updates that went in during the merge window
for platforms that use MCPM"
* 'fixes' of git://git.armlinux.org.uk/~rmk/linux-arm:
ARM: 8677/1: boot/compressed: fix decompressor header layout for v7-M
ARM: 8676/1: NOMMU: provide pgprot_device() macro
ARM: 8675/1: MCPM: ensure not to enter __hyp_soft_restart from loopback and cpu_power_down
In some situations the libdw unwinder stopped working properly. I.e.
with libunwind we see:
~~~~~
heaptrack_gui 2228 135073.400112: 641314 cycles:
e8ed _dl_fixup (/usr/lib/ld-2.25.so)
15f06 _dl_runtime_resolve_sse_vex (/usr/lib/ld-2.25.so)
ed94c KDynamicJobTracker::KDynamicJobTracker (/home/milian/projects/compiled/kf5/lib64/libKF5KIOWidgets.so.5.35.0)
608f3 _GLOBAL__sub_I_kdynamicjobtracker.cpp (/home/milian/projects/compiled/kf5/lib64/libKF5KIOWidgets.so.5.35.0)
f199 call_init.part.0 (/usr/lib/ld-2.25.so)
f2a5 _dl_init (/usr/lib/ld-2.25.so)
db9 _dl_start_user (/usr/lib/ld-2.25.so)
~~~~~
But with libdw and without this patch this sample is not properly
unwound:
~~~~~
heaptrack_gui 2228 135073.400112: 641314 cycles:
e8ed _dl_fixup (/usr/lib/ld-2.25.so)
15f06 _dl_runtime_resolve_sse_vex (/usr/lib/ld-2.25.so)
ed94c KDynamicJobTracker::KDynamicJobTracker (/home/milian/projects/compiled/kf5/lib64/libKF5KIOWidgets.so.5.35.0)
~~~~~
Debug output showed me that libdw found a module for the last frame
address, but it thinks it belongs to /usr/lib/ld-2.25.so. This patch
double-checks what libdw sees and what perf knows. If the mappings
mismatch, we now report the elf known to perf. This fixes the situation
above, and the libdw unwinder produces the same stack as libunwind.
Signed-off-by: Milian Wolff <milian.wolff@kdab.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Link: http://lkml.kernel.org/r/20170602143753.16907-1-milian.wolff@kdab.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
On an Ubuntu xenial system, 'perf annotate' says to install powerpc
objdump on a system that already has binutils-powerpc-linux-gnu
installed. Make perf aware of the missing triplet for the
powerpc-linux-gnu target.
Signed-off-by: Kim Phillips <kim.phillips@arm.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: He Kuang <hekuang@huawei.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Ravi Bangoria <ravi.bangoria@linux.vnet.ibm.com>
Link: http://lkml.kernel.org/r/20170529142754.7fbfb1152fd8f2663de0ea70@arm.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
The following tests are failing on powerpc:
# perf test break
18: Breakpoint overflow signal handler : FAILED!
19: Breakpoint overflow sampling : FAILED!
The powerpc kenel so far does not have support to even create
instruction breakpoints using the perf event interface, so those tests
fail early in the config phase.
I added a '->is_supported()' callback to test struct to be able to
disable specific tests. It seems better than putting ifdefs directly to
the test array.
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/20170601205450.GA398@krava
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
The decompress_kmodule() decompresses kernel modules in order to load
symbols from it. In the DSO_BINARY_TYPE__BUILD_ID_CACHE case, it needs
the full file path to extract the file extension to determine the
decompression method. But overwriting 'name' will fail the
decompression since it might point to a non-existing old file.
Instead, use dso->long_name for having the correct extension and use the
real filename to decompress.
In the DSO_BINARY_TYPE__SYSTEM_PATH_KMODULE_COMP case, both names should
be the same. This allows resolving symbols in the old modules.
Before:
$ perf report -i perf.data.old | grep scsi_mod
0.00% cc1 [scsi_mod] [k] 0x0000000000004aa6
0.00% as [scsi_mod] [k] 0x00000000000099e1
0.00% cc1 [scsi_mod] [k] 0x0000000000009830
0.00% cc1 [scsi_mod] [k] 0x0000000000001b8f
After:
0.00% cc1 [scsi_mod] [k] scsi_handle_queue_ramp_up
0.00% as [scsi_mod] [k] scsi_sg_alloc
0.00% cc1 [scsi_mod] [k] scsi_setup_cmnd
0.00% cc1 [scsi_mod] [k] scsi_get_command
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: kernel-team@lge.com
Link: http://lkml.kernel.org/r/20170531120105.21731-3-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Like machine__findnew_module_dso(), it should set necessary info for
kernel modules to find symbol info from the file. Factor out
dso__set_module_info() to do it.
This is needed for dso__needs_decompress() to detect such DSOs.
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: kernel-team@lge.com
Link: http://lkml.kernel.org/r/20170531120105.21731-2-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
When perf processes build-id event, it creates DSOs with the build-id.
But it didn't set the module short name (like '[module-name]') so when
processing a kernel mmap event of the module, it cannot found the DSO as
it only checks the short names.
That leads for perf to create a same DSO without the build-id info and
it'll lookup the system path even if the DSO is already in the build-id
cache. After kernel was updated, perf cannot find the DSO and cannot
show symbols in it anymore.
You can see this if you have an old data file (w/ old kernel version):
$ perf report -i perf.data.old -v |& grep scsi_mod
build id event received for /lib/modules/3.19.2-1-ARCH/kernel/drivers/scsi/scsi_mod.ko.gz : cafe1ce6ca13a98a5d9ed3425cde249e57a27fc1
Failed to open /lib/modules/3.19.2-1-ARCH/kernel/drivers/scsi/scsi_mod.ko.gz, continuing without symbols
...
The second message didn't show the build-id. With this patch:
$ perf report -i perf.data.old -v |& grep scsi_mod
build id event received for /lib/modules/3.19.2-1-ARCH/kernel/drivers/scsi/scsi_mod.ko.gz: cafe1ce6ca13a98a5d9ed3425cde249e57a27fc1
/lib/modules/3.19.2-1-ARCH/kernel/drivers/scsi/scsi_mod.ko.gz with build id cafe1ce6ca13a98a5d9ed3425cde249e57a27fc1 not found, continuing without symbols
...
Now it shows the build-id but still cannot load the symbol table. This
is a different problem which will be fixed in the next patch.
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: kernel-team@lge.com
Link: http://lkml.kernel.org/r/20170531120105.21731-1-namhyung@kernel.org
[ Fix the build on older compilers (debian <= 8, fedora <= 21, etc) wrt kmod_path var init ]
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
