Mirroring offset_in_page(), this gives you the offset within this
particular page, no matter what size page it is. It optimises down to
offset_in_page() if CONFIG_TRANSPARENT_HUGEPAGE is not set.
Give up on the notion that we can remove page-flags.h from mm.h. There
are currently 14 inline functions which use a PageFoo function. Also, two
of the files directly included by mm.h include page-flags.h themselves,
and there are probably more indirect inclusions. So just include it at
the top like any other header file.
These are some generic cleanups and improvements, which I would like
merged into mmotm soon. The first one should be a performance improvement
for all users of compound pages, and the others are aimed at getting code
to compile away when CONFIG_TRANSPARENT_HUGEPAGE is disabled (ie small
systems). Also better documented / less confusing than the current prefix
mixture of compound, hpage and thp.
This patch (of 7):
This removes a few instructions from functions which need to know how many
pages are in a compound page. The storage used is either page->mapping on
64-bit or page->index on 32-bit. Both of these are fine to overlay on
tail pages.
Greg Kurz [Sat, 15 Aug 2020 00:30:20 +0000 (17:30 -0700)]
mailmap: add entry for Greg Kurz
I had stopped using [email protected] a while back already but this
email address was shutdown last June when I quit IBM. It's about time to
map it to [email protected].
Kees Cook [Sat, 15 Aug 2020 00:30:14 +0000 (17:30 -0700)]
exec: restore EACCES of S_ISDIR execve()
Patch series "Fix S_ISDIR execve() errno".
Fix an errno change for execve() of directories, noticed by Marc Zyngier.
Along with the fix, include a regression test to avoid seeing this return
in the future.
This patch (of 2):
The return code for attempting to execute a directory has always been
EACCES. Adjust the S_ISDIR exec test to reflect the old errno instead of
the general EISDIR for other kinds of "open" attempts on directories.
Nick Terrell [Sat, 15 Aug 2020 00:30:10 +0000 (17:30 -0700)]
lz4: fix kernel decompression speed
This patch replaces all memcpy() calls with LZ4_memcpy() which calls
__builtin_memcpy() so the compiler can inline it.
LZ4 relies heavily on memcpy() with a constant size being inlined. In x86
and i386 pre-boot environments memcpy() cannot be inlined because memcpy()
doesn't get defined as __builtin_memcpy().
An equivalent patch has been applied upstream so that the next import
won't lose this change [1].
I've measured the kernel decompression speed using QEMU before and after
this patch for the x86_64 and i386 architectures. The speed-up is about
10x as shown below.
Code Arch Kernel Size Time Speed
v5.8 x86_64 11504832 B 148 ms 79 MB/s
patch x86_64 11503872 B 13 ms 885 MB/s
v5.8 i386 9621216 B 91 ms 106 MB/s
patch i386 9620224 B 10 ms 962 MB/s
I also measured the time to decompress the initramfs on x86_64, i386, and
arm. All three show the same decompression speed before and after, as
expected.
Sonny reported that one of their tests started failing on the latest
kernel on their Chrome OS platform. The root cause is that the above
commit removed the protection line of empty zone, while the parser used in
the test relies on the protection line to mark the end of each zone.
Let's revert it to avoid breaking userspace testing or applications.
sh: landisk: Add missing initialization of sh_io_port_base
The Landisk setup code maps the CF IDE area using ioremap_prot(), and
passes the resulting virtual addresses to the pata_platform driver,
disguising them as I/O port addresses. Hence the pata_platform driver
translates them again using ioport_map().
As CONFIG_GENERIC_IOMAP=n, and CONFIG_HAS_IOPORT_MAP=y, the
SuperH-specific mapping code in arch/sh/kernel/ioport.c translates
I/O port addresses to virtual addresses by adding sh_io_port_base, which
defaults to -1, thus breaking the assumption of an identity mapping.
Use the copy_thread_tls() calling convention which passes tls through a
register. This is required so we can remove the copy_thread{_tls}() split
and remove the HAVE_COPY_THREAD_TLS macro.
This switches to using common code for the DMA allocations, including
potential use of the CMA allocator if configured.
Switching to the generic code enables DMA allocations from atomic
context, which is required by the DMA API documentation, and also
adds various other minor features drivers start relying upon. It
also makes sure we have on tested code base for all architectures
that require uncached pte bits for coherent DMA allocations.
The code handling non-coherent DMA depends on being able to remap code
as non-cached. But that can't be done without an MMU, so using this
option on NOMMU builds is broken.
Rationale:
Reduces attack surface on kernel devs opening the links for MITM
as HTTPS traffic is much harder to manipulate.
Deterministic algorithm:
For each file:
If not .svg:
For each line:
If doesn't contain `\bxmlns\b`:
For each link, `\bhttp://[^# \t\r\n]*(?:\w|/)`:
If neither `\bgnu\.org/license`, nor `\bmozilla\.org/MPL\b`:
If both the HTTP and HTTPS versions
return 200 OK and serve the same content:
Replace HTTP with HTTPS.
"data" became the log level in commit 539e786cc37ee5cb ("sh: add loglvl
to show_trace()"), so we do need to keep the printk() before the
continuation in print_trace_address().
Somewhere along the patch handling path, both the old "printk(KERN_ALERT
....)" and the new "pr_alert(...)" were retained, leading to the
duplicate printing of "PC:".
__delay() is an internal implementation detail on several architectures.
Drivers should not call __delay() directly, as it has non-standardized
semantics, or may not even exist.
Hence there is no need to export __delay() to modules.
See also include/asm-generic/delay.h:
/* Undefined functions to get compile-time errors */
...
extern void __delay(unsigned long loops);
sh: Fix unneeded constructor in page table allocation
The pgd kmem_cache allocation both specified __GFP_ZERO and had a
constructor which makes no sense. Remove __GFP_ZERO and zero the user
parts of the pgd explicitly.
Removed obsolete resources from bonding.rst doc:
- [email protected] hasn't been used since 2008
- admin interface is 404
- Donald Becker's domain/content no longer online
Linus Torvalds [Fri, 14 Aug 2020 23:01:59 +0000 (16:01 -0700)]
Merge tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi
Pull more SCSI updates from James Bottomley:
"This is the set of patches which arrived too late to stabilise in
-next for the first pull.
It's really just an lpfc driver update and an assortment of minor
fixes, all in drivers. The only core update is to the zone block
device driver, which isn't the one most people use"
* tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
scsi: lpfc: Update lpfc version to 12.8.0.3
scsi: lpfc: Fix LUN loss after cable pull
scsi: lpfc: Fix validation of bsg reply lengths
scsi: lpfc: Fix retry of PRLI when status indicates its unsupported
scsi: lpfc: Fix oops when unloading driver while running mds diags
scsi: lpfc: Fix RSCN timeout due to incorrect gidft counter
scsi: lpfc: Fix no message shown for lpfc_hdw_queue out of range value
scsi: lpfc: Fix FCoE speed reporting
scsi: lpfc: Add missing misc_deregister() for lpfc_init()
scsi: lpfc: nvmet: Avoid hang / use-after-free again when destroying targetport
scsi: scsi_transport_sas: Add spaces around binary operator "|"
scsi: sd_zbc: Improve zone revalidation
scsi: libfc: Free skb in fc_disc_gpn_id_resp() for valid cases
scsi: fcoe: Memory leak fix in fcoe_sysfs_fcf_del()
scsi: target: Make iscsit_register_transport() return void
Linus Torvalds [Fri, 14 Aug 2020 23:00:09 +0000 (16:00 -0700)]
Merge tag 'pwm/for-5.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/thierry.reding/linux-pwm
Pull pwm updates from Thierry Reding:
"The majority of this batch is conversion of the PWM period and duty
cycle to 64-bit unsigned integers, which is required so that some
types of hardware can generate the full range of signals that they're
capable of.
The remainder is mostly minor fixes and cleanups"
* tag 'pwm/for-5.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/thierry.reding/linux-pwm:
pwm: bcm-iproc: handle clk_get_rate() return
pwm: Replace HTTP links with HTTPS ones
pwm: omap-dmtimer: Repair pwm_omap_dmtimer_chip's broken kerneldoc header
pwm: mediatek: Provide missing kerneldoc description for 'soc' arg
pwm: bcm-kona: Remove impossible comparison when validating duty cycle
pwm: bcm-iproc: Remove impossible comparison when validating duty cycle
pwm: iqs620a: Use lowercase hexadecimal literals for consistency
pwm: Convert period and duty cycle to u64
clk: pwm: Use 64-bit division function
backlight: pwm_bl: Use 64-bit division function
pwm: sun4i: Use nsecs_to_jiffies to avoid a division
pwm: sifive: Use 64-bit division macro
pwm: iqs620a: Use 64-bit division
pwm: imx27: Use 64-bit division macro
pwm: imx-tpm: Use 64-bit division macro
pwm: clps711x: Use 64-bit division macro
hwmon: pwm-fan: Use 64-bit division macro
drm/i915: Use 64-bit division macro
Linus Torvalds [Fri, 14 Aug 2020 22:58:57 +0000 (15:58 -0700)]
Merge tag 'sound-fix-5.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound
Pull sound fixes from Takashi Iwai:
"All device-specific small fixes and quirks mostly for usual suspects,
USB-audio and HD-audio"
* tag 'sound-fix-5.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound:
ALSA: echoaudio: Fix potential Oops in snd_echo_resume()
ALSA: hda/hdmi: Use force connectivity quirk on another HP desktop
ALSA: hda/realtek - Fix unused variable warning
ALSA: hda - reverse the setting value in the micmute_led_set
ALSA: echoaduio: Drop superfluous volatile modifier
ALSA: usb-audio: Disable Lenovo P620 Rear line-in volume control
ALSA: usb-audio: add quirk for Pioneer DDJ-RB
ALSA: usb-audio: work around streaming quirk for MacroSilicon MS2109
ALSA: hda - fix the micmute led status for Lenovo ThinkCentre AIO
ALSA: usb-audio: fix overeager device match for MacroSilicon MS2109
ALSA: hda/realtek: Fix pin default on Intel NUC 8 Rugged
ALSA: usb-audio: Creative USB X-Fi Pro SB1095 volume knob support
ALSA: usb-audio: fix spelling mistake "buss" -> "bus"
Linus Torvalds [Fri, 14 Aug 2020 22:22:43 +0000 (15:22 -0700)]
dma-debug: remove debug_dma_assert_idle() function
This remoes the code from the COW path to call debug_dma_assert_idle(),
which was added many years ago.
Google shows that it hasn't caught anything in the 6+ years we've had it
apart from a false positive, and Hugh just noticed how it had a very
unfortunate spinlock serialization in the COW path.
He fixed that issue the previous commit (a85ffd59bd36: "dma-debug: fix
debug_dma_assert_idle(), use rcu_read_lock()"), but let's see if anybody
even notices when we remove this function entirely.
NOTE! We keep the dma tracking infrastructure that was added by the
commit that introduced it. Partly to make it easier to resurrect this
debug code if we ever deside to, and partly because that tracking by pfn
and offset looks quite reasonable.
The problem with this debug code was simply that it was expensive and
didn't seem worth it, not that it was wrong per se.
Hugh Dickins [Thu, 13 Aug 2020 03:17:00 +0000 (20:17 -0700)]
dma-debug: fix debug_dma_assert_idle(), use rcu_read_lock()
Since commit 2a9127fcf229 ("mm: rewrite wait_on_page_bit_common()
logic") improved unlock_page(), it has become more noticeable how
cow_user_page() in a kernel with CONFIG_DMA_API_DEBUG=y can create and
suffer from heavy contention on DMA debug's radix_lock in
debug_dma_assert_idle().
It is only doing a lookup: use rcu_read_lock() and rcu_read_unlock()
instead; though that does require the static ents[] to be moved
onstack...
...but, hold on, isn't that radix_tree_gang_lookup() and loop doing
quite the wrong thing: searching CACHELINES_PER_PAGE entries for an
exact match with the first cacheline of the page in question?
radix_tree_gang_lookup() is the right tool for the job, but we need
nothing more than to check the first entry it can find, reporting if
that falls anywhere within the page.
(Is RCU safe here? As safe as using the spinlock was. The entries are
never freed, so don't need to be freed by RCU. They may be reused, and
there is a faint chance of a race, with an offending entry reused while
printing its error info; but the spinlock did not prevent that either,
and I agree that it's not worth worrying about. ]
[ Side noe: this patch is a clear improvement to the status quo, but the
next patch will be removing this debug function entirely.
But just in case we decide we want to resurrect the debugging code
some day, I'm first applying this improvement patch so that it doesn't
get lost - Linus ]
Fixes: 3b7a6418c749 ("dma debug: account for cachelines and read-only mappings in overlap tracking") Signed-off-by: Hugh Dickins <[email protected]> Acked-by: Dan Williams <[email protected]> Acked-by: Christoph Hellwig <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
Fix the reason of crashing system by add waiting time to finish reset
recovery process before starting remove driver procedure.
Now VSI is releasing if VSI is not in reset recovery mode.
Without this fix it was possible to start remove driver if other
processing command need reset recovery procedure which resulted in
null pointer dereference. VSI used by the ethtool process has been
cleared by remove driver process.
Fixes: 4b8164467b85 ("i40e: Add common function for finding VSI by type") Signed-off-by: Grzegorz Szczurek <[email protected]> Signed-off-by: Arkadiusz Kubalewski <[email protected]> Tested-by: Aaron Brown <[email protected]> Signed-off-by: Tony Nguyen <[email protected]>
i40e: Set RX_ONLY mode for unicast promiscuous on VLAN
Trusted VF with unicast promiscuous mode set, could listen to TX
traffic of other VFs.
Set unicast promiscuous mode to RX traffic, if VSI has port VLAN
configured. Rename misleading I40E_AQC_SET_VSI_PROMISC_TX bit to
I40E_AQC_SET_VSI_PROMISC_RX_ONLY. Aligned unicast promiscuous with
VLAN to the one without VLAN.
Fixes: 6c41a7606967 ("i40e: Add promiscuous on VLAN support") Fixes: 3b1200891b7f ("i40e: When in promisc mode apply promisc mode to Tx Traffic as well") Signed-off-by: Przemyslaw Patynowski <[email protected]> Signed-off-by: Aleksandr Loktionov <[email protected]> Signed-off-by: Arkadiusz Kubalewski <[email protected]> Tested-by: Andrew Bowers <[email protected]> Signed-off-by: Tony Nguyen <[email protected]>
Linus Torvalds [Fri, 14 Aug 2020 21:26:08 +0000 (14:26 -0700)]
Merge tag 'timers-urgent-2020-08-14' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull timekeeping updates from Thomas Gleixner:
"A set of timekeeping/VDSO updates:
- Preparatory work to allow S390 to switch over to the generic VDSO
implementation.
S390 requires that the VDSO data pointer is handed in to the
counter read function when time namespace support is enabled.
Adding the pointer is a NOOP for all other architectures because
the compiler is supposed to optimize that out when it is unused in
the architecture specific inline. The change also solved a similar
problem for MIPS which fortunately has time namespaces not yet
enabled.
S390 needs to update clock related VDSO data independent of the
timekeeping updates. This was solved so far with yet another
sequence counter in the S390 implementation. A better solution is
to utilize the already existing VDSO sequence count for this. The
core code now exposes helper functions which allow to serialize
against the timekeeper code and against concurrent readers.
S390 needs extra data for their clock readout function. The initial
common VDSO data structure did not provide a way to add that. It
now has an embedded architecture specific struct embedded which
defaults to an empty struct.
Doing this now avoids tree dependencies and conflicts post rc1 and
allows all other architectures which work on generic VDSO support
to work from a common upstream base.
- A trivial comment fix"
* tag 'timers-urgent-2020-08-14' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
time: Delete repeated words in comments
lib/vdso: Allow to add architecture-specific vdso data
timekeeping/vsyscall: Provide vdso_update_begin/end()
vdso/treewide: Add vdso_data pointer argument to __arch_get_hw_counter()
Linus Torvalds [Fri, 14 Aug 2020 21:17:51 +0000 (14:17 -0700)]
Merge tag 'timers-core-2020-08-14' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull more timer updates from Thomas Gleixner:
"A set of posix CPU timer changes which allows to defer the heavy work
of posix CPU timers into task work context. The tick interrupt is
reduced to a quick check which queues the work which is doing the
heavy lifting before returning to user space or going back to guest
mode. Moving this out is deferring the signal delivery slightly but
posix CPU timers are inaccurate by nature as they depend on the tick
so there is no real damage. The relevant test cases all passed.
This lifts the last offender for RT out of the hard interrupt context
tick handler, but it also has the general benefit that the actual
heavy work is accounted to the task/process and not to the tick
interrupt itself.
Further optimizations are possible to break long sighand lock hold and
interrupt disabled (on !RT kernels) times when a massive amount of
posix CPU timers (which are unpriviledged) is armed for a
task/process.
This is currently only enabled for x86 because the architecture has to
ensure that task work is handled in KVM before entering a guest, which
was just established for x86 with the new common entry/exit code which
got merged post 5.8 and is not the case for other KVM architectures"
* tag 'timers-core-2020-08-14' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86: Select POSIX_CPU_TIMERS_TASK_WORK
posix-cpu-timers: Provide mechanisms to defer timer handling to task_work
posix-cpu-timers: Split run_posix_cpu_timers()
Linus Torvalds [Fri, 14 Aug 2020 21:14:28 +0000 (14:14 -0700)]
Merge tag 'irq-urgent-2020-08-14' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull irq fixes from Thomas Gleixner:
"Two fixes in the core interrupt code which ensure that all error exits
unlock the descriptor lock"
* tag 'irq-urgent-2020-08-14' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
genirq: Unlock irq descriptor after errors
genirq/PM: Always unlock IRQ descriptor in rearm_wake_irq()
Florian Westphal [Fri, 14 Aug 2020 13:56:34 +0000 (15:56 +0200)]
mptcp: sendmsg: reset iter on error
Once we've copied data from the iterator we need to revert in case we
end up not sending any data.
This bug doesn't trigger with normal 'poll' based tests, because
we only feed a small chunk of data to kernel after poll indicated
POLLOUT. With blocking IO and large writes this triggers. Receiver
ends up with less data than it should get.
Fixes: 72511aab95c94d ("mptcp: avoid blocking in tcp_sendpages") Signed-off-by: Florian Westphal <[email protected]> Reviewed-by: Mat Martineau <[email protected]> Signed-off-by: David S. Miller <[email protected]>
Edward Cree [Fri, 14 Aug 2020 12:26:22 +0000 (13:26 +0100)]
sfc: check hash is valid before using it
On EF100, the RX hash field in the packet prefix may not be valid (e.g.
if the header parse failed), and this is indicated by a one-bit flag
elsewhere in the packet prefix. Only call skb_set_hash() if the
RSS_HASH_VALID bit is set.
Linus Torvalds [Fri, 14 Aug 2020 21:04:53 +0000 (14:04 -0700)]
Merge tag 'for-linus' of git://github.com/openrisc/linux
Pull OpenRISC updates from Stafford Horne:
"A few patches all over the place during this cycle, mostly bug and
sparse warning fixes for OpenRISC, but a few enhancements too. Note,
there are 2 non OpenRISC specific fixups.
Non OpenRISC fixes:
- In init we need to align the init_task correctly to fix an issue
with MUTEX_FLAGS, reviewed by Peter Z. No one picked this up so I
kept it on my tree.
- In asm-generic/io.h I fixed up some sparse warnings, OK'd by Arnd.
Arnd asked to merge it via my tree.
OpenRISC fixes:
- Many fixes for OpenRISC sprase warnings.
- Add support OpenRISC SMP tlb flushing rather than always flushing
the entire TLB on every CPU.
- Fix bug when dumping stack via /proc/xxx/stack of user threads"
* tag 'for-linus' of git://github.com/openrisc/linux:
openrisc: uaccess: Add user address space check to access_ok
openrisc: signal: Fix sparse address space warnings
openrisc: uaccess: Remove unused macro __addr_ok
openrisc: uaccess: Use static inline function in access_ok
openrisc: uaccess: Fix sparse address space warnings
openrisc: io: Fixup defines and move include to the end
asm-generic/io.h: Fix sparse warnings on big-endian architectures
openrisc: Implement proper SMP tlb flushing
openrisc: Fix oops caused when dumping stack
openrisc: Add support for external initrd images
init: Align init_task to avoid conflict with MUTEX_FLAGS
openrisc: fix __user in raw_copy_to_user()'s prototype
David S. Miller [Fri, 14 Aug 2020 20:57:56 +0000 (13:57 -0700)]
Merge tag 'linux-can-fixes-for-5.9-20200814' of git://git.kernel.org/pub/scm/linux/kernel/git/mkl/linux-can
Marc Kleine-Budde says:
====================
pull-request: can 2020-08-14
this is a pull request of 6 patches for net/master. All patches fix problems in
the j1939 CAN networking stack.
The first patch is by Eric Dumazet fixes a kernel-infoleak in
j1939_sk_sock2sockaddr_can().
The remaining 5 patches are by Oleksij Rempel and fix recption of j1939
messages not orginated by the stack, a use-after-free in j1939_tp_txtimer(),
ensure that the CAN driver has a ml_priv allocated. These problem were found by
google's syzbot. Further ETP sessions with block size of less than 255 are
fixed and a sanity check was added to j1939_xtp_rx_dat_one() to detect packet
corruption.
====================
Linus Torvalds [Fri, 14 Aug 2020 20:40:27 +0000 (13:40 -0700)]
Merge tag 'powerpc-5.9-2' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux
Pull powerpc fix from Michael Ellerman:
"One fix for a boot crash on some platforms introduced by the recent
pkey refactoring.
Thanks to Christian Zigotzky and Aneesh Kumar K.V"
* tag 'powerpc-5.9-2' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux:
powerpc/pkeys: Fix boot failures with Nemo board (A-EON AmigaOne X1000)
Linus Torvalds [Fri, 14 Aug 2020 20:34:37 +0000 (13:34 -0700)]
Merge tag 'for-linus-5.9-rc1b-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip
Pull more xen updates from Juergen Gross:
- Remove support for running as 32-bit Xen PV-guest.
32-bit PV guests are rarely used, are lacking security fixes for
Meltdown, and can be easily replaced by PVH mode. Another series for
doing more cleanup will follow soon (removal of 32-bit-only pvops
functionality).
- Fixes and additional features for the Xen display frontend driver.
* tag 'for-linus-5.9-rc1b-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip:
drm/xen-front: Pass dumb buffer data offset to the backend
xen: Sync up with the canonical protocol definition in Xen
drm/xen-front: Add YUYV to supported formats
drm/xen-front: Fix misused IS_ERR_OR_NULL checks
xen/gntdev: Fix dmabuf import with non-zero sgt offset
x86/xen: drop tests for highmem in pv code
x86/xen: eliminate xen-asm_64.S
x86/xen: remove 32-bit Xen PV guest support
Linus Torvalds [Fri, 14 Aug 2020 20:31:25 +0000 (13:31 -0700)]
Merge tag 'hyperv-fixes-signed' of git://git.kernel.org/pub/scm/linux/kernel/git/hyperv/linux
Pull hyper-v fixes from Wei Liu:
- fix oops reporting on Hyper-V
- make objtool happy
* tag 'hyperv-fixes-signed' of git://git.kernel.org/pub/scm/linux/kernel/git/hyperv/linux:
x86/hyperv: Make hv_setup_sched_clock inline
Drivers: hv: vmbus: Only notify Hyper-V for die events that are oops
This can happen if ptrace() or sigreturn() pokes an LDT selector into FS
or GS for a task with no LDT and something tries to read the base before
a return to usermode notices the bad selector and fixes it.
Linus Torvalds [Fri, 14 Aug 2020 18:07:02 +0000 (11:07 -0700)]
Merge tag 'modules-for-v5.9' of git://git.kernel.org/pub/scm/linux/kernel/git/jeyu/linux
Pull module updates from Jessica Yu:
"The most important change would be Christoph Hellwig's patch
implementing proprietary taint inheritance, in an effort to discourage
the creation of GPL "shim" modules that interface between GPL symbols
and proprietary symbols.
Summary:
- Have modules that use symbols from proprietary modules inherit the
TAINT_PROPRIETARY_MODULE taint, in an effort to prevent GPL shim
modules that are used to circumvent _GPL exports. These are modules
that claim to be GPL licensed while also using symbols from
proprietary modules. Such modules will be rejected while non-GPL
modules will inherit the proprietary taint.
- Module export space cleanup. Unexport symbols that are unused
outside of module.c or otherwise used in only built-in code"
* tag 'modules-for-v5.9' of git://git.kernel.org/pub/scm/linux/kernel/git/jeyu/linux:
modules: inherit TAINT_PROPRIETARY_MODULE
modules: return licensing information from find_symbol
modules: rename the licence field in struct symsearch to license
modules: unexport __module_address
modules: unexport __module_text_address
modules: mark each_symbol_section static
modules: mark find_symbol static
modules: mark ref_module static
modules: linux/moduleparam.h: drop duplicated word in a comment
Linus Torvalds [Fri, 14 Aug 2020 18:04:45 +0000 (11:04 -0700)]
Merge tag 'kconfig-v5.9' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild
Pull Kconfig updates from Masahiro Yamada:
- remove '---help---' keyword support
- fix mouse events for 'menuconfig' symbols in search view of qconf
- code cleanups of qconf
* tag 'kconfig-v5.9' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild: (24 commits)
kconfig: qconf: move setOptionMode() to ConfigList from ConfigView
kconfig: qconf: do not limit the pop-up menu to the first row
kconfig: qconf: refactor icon setups
kconfig: qconf: remove unused voidPix, menuInvPix
kconfig: qconf: remove ConfigItem::text/setText
kconfig: qconf: remove ConfigList::addColumn/removeColumn
kconfig: qconf: remove ConfigItem::pixmap/setPixmap
kconfig: qconf: drop more localization code
kconfig: qconf: remove 'parent' from ConfigList::updateMenuList()
kconfig: qconf: remove unused argument from ConfigView::updateList()
kconfig: qconf: remove unused argument from ConfigList::updateList()
kconfig: qconf: omit parent to QHBoxLayout()
kconfig: qconf: remove name from ConfigSearchWindow constructor
kconfig: qconf: remove unused ConfigList::listView()
kconfig: qconf: overload addToolBar() to create and insert toolbar
kconfig: qconf: remove toolBar from ConfigMainWindow members
kconfig: qconf: use 'menu' variable for (QMenu *)
kconfig: qconf: do not use 'menu' variable for (QMenuBar *)
kconfig: qconf: remove ->addSeparator() to menuBar
kconfig: add 'static' to some file-local data
...
Right now, igc_ptp_reset() is called from igc_reset(), which is called
from igc_probe() before igc_ptp_init() has a chance to run. It is
detected as an attempt to use an spinlock without registering its key
first. See log below.
To avoid this problem, simplify the initialization: igc_ptp_init() is
only called from igc_probe(), and igc_ptp_reset() is only called from
igc_reset().
Rob Herring [Fri, 14 Aug 2020 15:21:41 +0000 (09:21 -0600)]
dt-bindings: Remove more cases of 'allOf' containing a '$ref'
Another wack-a-mole pass of killing off unnecessary 'allOf + $ref'
usage.
json-schema versions draft7 and earlier have a weird behavior in that
any keywords combined with a '$ref' are ignored (silently). The correct
form was to put a '$ref' under an 'allOf'. This behavior is now changed
in the 2019-09 json-schema spec and '$ref' can be mixed with other
keywords. The json-schema library doesn't yet support this, but the
tooling now does a fixup for this and either way works.
This has been a constant source of review comments, so let's change this
treewide so everyone copies the simpler syntax.
Rob Herring [Tue, 21 Apr 2020 02:24:47 +0000 (21:24 -0500)]
dt-bindings: Whitespace clean-ups in schema files
Clean-up incorrect indentation, extra spaces, long lines, and missing
EOF newline in schema files. Most of the clean-ups are for list
indentation which should always be 2 spaces more than the preceding
keyword.
Found with yamllint (which I plan to integrate into the checks).
Frank Ch. Eigler [Thu, 13 Aug 2020 08:22:04 +0000 (10:22 +0200)]
perf build-ids: Fall back to debuginfod query if debuginfo not found
During a perf-record, use the -ldebuginfod API to query a debuginfod
server, should the debug data not be found in the usual system
locations. If successful, the usual $HOME/.debug dir is populated.
$ perf record make tags
BUILD: Doing 'make -j8' parallel build
GEN tags
[ perf record: Woken up 1 times to write data ]
[ perf record: Captured and wrote 0.107 MB perf.data (1483 samples) ]
$ DEBUGINFOD_URLS=http://localhost:8002 perf record make tags
BUILD: Doing 'make -j8' parallel build
GEN tags
[ perf record: Woken up 1 times to write data ]
[ perf record: Captured and wrote 0.108 MB perf.data (1531 samples) ]
Paul A. Clarke [Thu, 13 Aug 2020 22:21:55 +0000 (17:21 -0500)]
perf stat: Update POWER9 metrics to utilize other metrics
These changes take advantage of the new capability added in merge commit 00e4db51259a5f936fec1424b884f029479d3981 "Allow using computed metrics
in calculating other metrics".
The net is a simplification of the expressions for a handful of metrics,
but no functional change.
Changbin Du [Sat, 8 Aug 2020 02:31:30 +0000 (10:31 +0800)]
perf tools: Add general function to parse sublevel options
This factors out a general function perf_parse_sublevel_options() to
parse sublevel options. The 'sublevel' options is something like the
'--debug' options which allow more sublevel options.
The '-g/-G' options have already implied function_graph tracer should be
used instead of function tracer. So we don't need extra option
'--tracer' in this case.
This patch changes the behavior as below:
- If '-g' or '-G' option is on, then function_graph tracer is used.
- If '-T' or '-N' option is on, then function tracer is used.
- The function_graph has priority over function tracer.
- The option '--tracer' only take effect if neither -g/-G nor -T/-N
is specified.
Here are some examples.
This will start tracing all functions using default tracer:
$ sudo perf ftrace
This will trace all functions using function graph tracer:
$ sudo perf ftrace -G '*'
This will trace function vfs_read using function graph tracer:
$ sudo perf ftrace -G vfs_read
This will trace function vfs_read using function tracer:
$ sudo perf ftrace -T vfs_read
Committer notes:
Using '-h -G' will tell what that option is about, so to further clarify
the above examples:
# perf ftrace -h -G
-G, --graph-funcs <func> Set graph filter on given functions
# perf ftrace -h -g
-g, --nograph-funcs <func> Set nograph filter on given functions
# perf ftrace -h -T
-T, --trace-funcs <func> trace given functions only
# perf ftrace -h -N
-N, --notrace-funcs <func> do not trace given functions
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