When compiled for 64-bit, the PD_HUGE constant is a 64-bit integer.
Mark it as an unsigned long.
This squashes over a thousand sparse warnings on my minimal T4240RDB
(e6500, ppc64be) config, of the following 2 forms:
arch/powerpc/include/asm/hugetlb.h:52:49: warning: constant 0x8000000000000000 is so big it is unsigned long
arch/powerpc/include/asm/nohash/pgtable.h:269:49: warning: constant 0x8000000000000000 is so big it is unsigned long
Signed-off-by: Daniel Axtens <dja@axtens.net>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Type qualifier on return type is ignored. Remove warning in W=1:
arch/powerpc/include/asm/book3s/64/pgtable.h:1268:25: error: type qualifiers ignored on function return type [-Werror=ignored-qualifiers]
Signed-off-by: Mathieu Malaterre <malat@debian.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
When both `CONFIG_LD_DEAD_CODE_DATA_ELIMINATION=y` and `CONFIG_UBSAN=y`
are set, link step typically produce numberous warnings about orphan
section:
+ powerpc-linux-gnu-ld -EB -m elf32ppc -Bstatic --orphan-handling=warn --build-id --gc-sections -X -o .tmp_vmlinux1 -T ./arch/powerpc/kernel/vmlinux.lds --who
le-archive built-in.a --no-whole-archive --start-group lib/lib.a --end-group
powerpc-linux-gnu-ld: warning: orphan section `.data..Lubsan_data393' from `init/main.o' being placed in section `.data..Lubsan_data393'.
powerpc-linux-gnu-ld: warning: orphan section `.data..Lubsan_data394' from `init/main.o' being placed in section `.data..Lubsan_data394'.
...
powerpc-linux-gnu-ld: warning: orphan section `.data..Lubsan_type11' from `init/main.o' being placed in section `.data..Lubsan_type11'.
powerpc-linux-gnu-ld: warning: orphan section `.data..Lubsan_type12' from `init/main.o' being placed in section `.data..Lubsan_type12'.
...
This commit remove those warnings produced at W=1.
Link: https://www.mail-archive.com/linuxppc-dev@lists.ozlabs.org/msg135407.html
Suggested-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Mathieu Malaterre <malat@debian.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Current core-pkey selftest fails if the test runs without privileges to
write into the core pattern file (/proc/sys/kernel/core_pattern). This
causes the test to fail and give the impression that the subsystem being
tested is broken, when, in fact, the test is being executed without the
proper privileges. This is the current error:
test: core_pkey
tags: git_version:v4.19-3-g9e3363be9bce-dirty
Error writing to core_pattern file: Permission denied
failure: core_pkey
This patch simply skips this test if it runs without the proper privileges,
avoiding this undesired failure.
CC: Tyrel Datwyler <tyreld@linux.vnet.ibm.com>
CC: Thiago Jung Bauermann <bauerman@linux.ibm.com>
Signed-off-by: Breno Leitao <leitao@debian.org>
Reviewed-by: Thiago Jung Bauermann <bauerman@linux.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
This patch creates a new macro that skips a test and prints a message to
stderr. This is useful to give an idea why the tests is being skipped,
other than just skipping the test blindly.
Signed-off-by: Breno Leitao <leitao@debian.org>
Reviewed-by: Thiago Jung Bauermann <bauerman@linux.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Some ptrace selftests are passing input operands using a constraint that
can allocate any register for the operand, and using these registers on
load/store operations.
If the register allocated by the compiler happens to be zero (r0), it might
cause an invalid memory address access, since load and store operations
consider the content of 0x0 address if the base register is r0, instead of
the content of the r0 register. For example:
r1 := 0xdeadbeef
r0 := 0xdeadbeef
ld r2, 0(1) /* will load into r2 the content of r1 address */
ld r2, 0(0) /* will load into r2 the content of 0x0 */
In order to avoid this possible problem, the inline assembly constraint
should be aware that these registers will be used as a base register, thus,
r0 should not be allocated.
Other than that, this patch removes inline assembly operands that are not
used by the tests.
Signed-off-by: Breno Leitao <leitao@debian.org>
Reviewed-by: Segher Boessenkool <segher@kernel.crashing.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Function huge_ptep_set_access_flags() has the 'extern' keyword in the
function definition and also in the function declaration. This causes a
warning in 'sparse' since the 'extern' storage class should not be used
in the function definition.
arch/powerpc/mm/pgtable.c:232:12: warning: function 'huge_ptep_set_access_flags' with external linkage has definition
This patch removes the keyword from the definition part. It also removes
the extern keyword from the declaration part, since checkpatch --strict
complains about it.
Suggested-by: Christophe Leroy <christophe.leroy@c-s.fr>
Signed-off-by: Breno Leitao <leitao@debian.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Sparse tool is showing some warnings on pkeys.c file, mainly related to
storage class identifiers. There are static variables and functions not
declared as such. The same thing happens with an extern function, which
misses the header inclusion.
arch/powerpc/mm/pkeys.c:14:6: warning: symbol 'pkey_execute_disable_supported' was not declared. Should it be static?
arch/powerpc/mm/pkeys.c:16:6: warning: symbol 'pkeys_devtree_defined' was not declared. Should it be static?
arch/powerpc/mm/pkeys.c:19:6: warning: symbol 'pkey_amr_mask' was not declared. Should it be static?
arch/powerpc/mm/pkeys.c:20:6: warning: symbol 'pkey_iamr_mask' was not declared. Should it be static?
arch/powerpc/mm/pkeys.c:21:6: warning: symbol 'pkey_uamor_mask' was not declared. Should it be static?
arch/powerpc/mm/pkeys.c:22:6: warning: symbol 'execute_only_key' was not declared. Should it be static?
arch/powerpc/mm/pkeys.c:60:5: warning: symbol 'pkey_initialize' was not declared. Should it be static?
arch/powerpc/mm/pkeys.c:404:6: warning: symbol 'arch_vma_access_permitted' was not declared. Should it be static?
This patch fix al the warning, basically turning all global variables that
are not declared as extern at asm/pkeys.h into static.
It also includes asm/mmu_context.h header, which contains the definition of
arch_vma_access_permitted.
Signed-off-by: Breno Leitao <leitao@debian.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
There are three symbols (two variables and a function) that are being used
solely in the same file (imc-pmu.c), thus, these symbols should be static,
but they are not. This was detected by sparse:
arch/powerpc/perf/imc-pmu.c:31:20: warning: symbol 'nest_imc_refc' was not declared. Should it be static?
arch/powerpc/perf/imc-pmu.c:37:20: warning: symbol 'core_imc_refc' was not declared. Should it be static?
arch/powerpc/perf/imc-pmu.c:46:16: warning: symbol 'imc_event_to_pmu' was not declared. Should it be static?
This patch simply adds the 'static' storage-class definition to these
symbols, thus, restricting their usage only in the imc-pmu.c file.
Signed-off-by: Breno Leitao <leitao@debian.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Function scom_map_device() returns data type 'scom_map_t', which is a
typedef for 'void *'. This functions is currently returning NULL and zero,
which causes the following warning by 'sparse':
arch/powerpc/sysdev/scom.c:63:24: warning: Using plain integer as NULL pointer
arch/powerpc/sysdev/scom.c:86:24: warning: Using plain integer as NULL pointer
This patch simply replaces zero by NULL.
Signed-off-by: Breno Leitao <leitao@debian.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Functions do_stf_{entry,exit}_barrier_fixups are static but not declared as
such. This was detected by `sparse` tool with the following warning:
arch/powerpc/lib/feature-fixups.c:121:6: warning: symbol 'do_stf_entry_barrier_fixups' was not declared. Should it be static?
arch/powerpc/lib/feature-fixups.c:171:6: warning: symbol 'do_stf_exit_barrier_fixups' was not declared. Should it be static?
This patch declares both functions as static, as they are only called by
do_stf_barrier_fixups(), which is in the same source code file.
Signed-off-by: Breno Leitao <leitao@debian.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Currently sparse is complaining about three issues on the xmon code. Two
storage classes issues and a dereferencing a 'noderef' pointer. These are
the warnings:
arch/powerpc/xmon/xmon.c:2783:1: warning: symbol 'dump_log_buf' was not declared. Should it be static?
arch/powerpc/xmon/xmon.c:2989:6: warning: symbol 'format_pte' was not declared. Should it be static?
arch/powerpc/xmon/xmon.c:2983:30: warning: dereference of noderef expression
This patch fixes all of them, turning both functions static and
dereferencing a pointer calling rcu_dereference() instead of a
straightforward dereference.
Signed-off-by: Breno Leitao <leitao@debian.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Sparse shows that xive_do_source_eoi() file is defined without any
declaration, thus, it should be a static function.
arch/powerpc/sysdev/xive/common.c:312:6: warning: symbol 'xive_do_source_eoi' was not declared. Should it be static?
This patch simply turns this symbol into static.
Signed-off-by: Breno Leitao <leitao@debian.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Function pci_ers_result_name() is a static function, although not declared
as such. This was detected by sparse in the following warning
arch/powerpc/kernel/eeh_driver.c:63:12: warning: symbol 'pci_ers_result_name' was not declared. Should it be static?
This patch simply declares the function a static.
Signed-off-by: Breno Leitao <leitao@debian.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Current powerpc security.c file is defining functions, as
cpu_show_meltdown(), cpu_show_spectre_v{1,2} and others, that are being
declared at linux/cpu.h header without including the header file that
contains these declarations.
This is being reported by sparse, which thinks that these functions are
static, due to the lack of declaration:
arch/powerpc/kernel/security.c:105:9: warning: symbol 'cpu_show_meltdown' was not declared. Should it be static?
arch/powerpc/kernel/security.c:139:9: warning: symbol 'cpu_show_spectre_v1' was not declared. Should it be static?
arch/powerpc/kernel/security.c:161:9: warning: symbol 'cpu_show_spectre_v2' was not declared. Should it be static?
arch/powerpc/kernel/security.c:209:6: warning: symbol 'stf_barrier' was not declared. Should it be static?
arch/powerpc/kernel/security.c:289:9: warning: symbol 'cpu_show_spec_store_bypass' was not declared. Should it be static?
This patch simply includes the proper header (linux/cpu.h) to match
function definition and declaration.
Signed-off-by: Breno Leitao <leitao@debian.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Currently the selftest wild_bctr can fail to build when an old gcc is
used, notably on gcc using a binutils version <= 2.27, because the
assembler does not support the integer suffix UL.
This patch adjusts the wild_bctr test so the REG_POISON value is still
treated as an unsigned long for the shifts on compilation but the UL
suffix is absent on the stringification, so the inline asm code
generated has no UL suffixes.
Signed-off-by: Gustavo Romero <gromero@linux.vnet.ibm.com>
[mpe: Wrap long line]
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Commit 4c2de74cc8 ("powerpc/64: Interrupts save PPR on stack rather
than thread_struct") changed sizeof(struct pt_regs) % 16 from 0 to 8,
which causes the interrupt frame allocation on kernel entry to put the
kernel stack out of alignment.
Quadword (16-byte) alignment for the stack is required by both the
64-bit v1 ABI (v1.9 § 3.2.2) and the 64-bit v2 ABI (v1.1 § 2.2.2.1).
Add a pad field to fix alignment, and add a BUILD_BUG_ON to catch this
in future.
Fixes: 4c2de74cc8 ("powerpc/64: Interrupts save PPR on stack rather than thread_struct")
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
When VPHN function is not supported and during cpu hotplug event,
kernel prints message 'VPHN function not supported. Disabling
polling...'. Currently it prints on every hotplug event, it floods
dmesg when a KVM guest tries to hotplug huge number of vcpus, let's
just print once and suppress further kernel prints.
Signed-off-by: Satheesh Rajendran <sathnaga@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
The selftest I recently added to test branching to an out-of-bounds
NIP doesn't work on 64-bit big endian. It does fail but not in the
right way. That is it SEGVs trying to load from the opd at BAD_NIP,
but it never gets as far as branching to BAD_NIP.
To fix it we need to create an opd which is reachable but which holds
the bad address.
Fixes: b7683fc66e ("selftests/powerpc: Add a test of wild bctr")
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Back in 2006 Ben added some workarounds for a misbehaviour in the
Spider IO bridge used on early Cell machines, see commit
014da7ff47 ("[POWERPC] Cell "Spider" MMIO workarounds"). Later these
were made to be generic, ie. not tied specifically to Spider.
The code stashes a token in the high bits (59-48) of virtual addresses
used for IO (eg. returned from ioremap()). This works fine when using
the Hash MMU, but when we're using the Radix MMU the bits used for the
token overlap with some of the bits of the virtual address.
This is because the maximum virtual address is larger with Radix, up
to c00fffffffffffff, and in fact we use that high part of the address
range for ioremap(), see RADIX_KERN_IO_START.
As it happens the bits that are used overlap with the bits that
differentiate an IO address vs a linear map address. If the resulting
address lies outside the linear mapping we will crash (see below), if
not we just corrupt memory.
virtio-pci 0000:00:00.0: Using 64-bit direct DMA at offset 800000000000000
Unable to handle kernel paging request for data at address 0xc000000080000014
...
CFAR: c000000000626b98 DAR: c000000080000014 DSISR: 42000000 IRQMASK: 0
GPR00: c0000000006c54fc c00000003e523378 c0000000016de600 0000000000000000
GPR04: c00c000080000014 0000000000000007 0fffffff000affff 0000000000000030
^^^^
...
NIP [c000000000626c5c] .iowrite8+0xec/0x100
LR [c0000000006c992c] .vp_reset+0x2c/0x90
Call Trace:
.pci_bus_read_config_dword+0xc4/0x120 (unreliable)
.register_virtio_device+0x13c/0x1c0
.virtio_pci_probe+0x148/0x1f0
.local_pci_probe+0x68/0x140
.pci_device_probe+0x164/0x220
.really_probe+0x274/0x3b0
.driver_probe_device+0x80/0x170
.__driver_attach+0x14c/0x150
.bus_for_each_dev+0xb8/0x130
.driver_attach+0x34/0x50
.bus_add_driver+0x178/0x2f0
.driver_register+0x90/0x1a0
.__pci_register_driver+0x6c/0x90
.virtio_pci_driver_init+0x2c/0x40
.do_one_initcall+0x64/0x280
.kernel_init_freeable+0x36c/0x474
.kernel_init+0x24/0x160
.ret_from_kernel_thread+0x58/0x7c
This hasn't been a problem because CONFIG_PPC_IO_WORKAROUNDS which
enables this code is usually not enabled. It is only enabled when it's
selected by PPC_CELL_NATIVE which is only selected by
PPC_IBM_CELL_BLADE and that in turn depends on BIG_ENDIAN. So in order
to hit the bug you need to build a big endian kernel, with IBM Cell
Blade support enabled, as well as Radix MMU support, and then boot
that on Power9 using Radix MMU.
Still we can fix the bug, so let's do that. We simply use fewer bits
for the token, taking the union of the restrictions on the address
from both Hash and Radix, we end up with 8 bits we can use for the
token. The only user of the token is iowa_mem_find_bus() which only
supports 8 token values, so 8 bits is plenty for that.
Fixes: 566ca99af0 ("powerpc/mm/radix: Add dummy radix_enabled()")
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
With preempt enabled we see warnings in do_slb_fault():
BUG: using smp_processor_id() in preemptible [00000000] code: kworker/u33:0/98
futex hash table entries: 4096 (order: 3, 524288 bytes)
caller is do_slb_fault+0x204/0x230
CPU: 5 PID: 98 Comm: kworker/u33:0 Not tainted 4.19.0-rc3-gcc-7.3.1-00022-g1936f094e164 #138
Call Trace:
dump_stack+0xb4/0x104 (unreliable)
check_preemption_disabled+0x148/0x150
do_slb_fault+0x204/0x230
data_access_slb_common+0x138/0x180
This is caused by the get_paca() in slb_allocate_kernel(), which
includes a call to debug_smp_processor_id().
slb_allocate_kernel() can only be called from do_slb_fault(), and in
that path interrupts are hard disabled and so we can't be preempted,
but we can't update the preempt flags (in thread_info) because that
could cause an SLB fault.
So just use local_paca which is safe and doesn't cause the warning.
Fixes: 48e7b76957 ("powerpc/64s/hash: Convert SLB miss handlers to C")
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Pull networking fixes from David Miller:
"One last pull request before heading to Vancouver for LPC, here we have:
1) Don't forget to free VSI contexts during ice driver unload, from
Victor Raj.
2) Don't forget napi delete calls during device remove in ice driver,
from Dave Ertman.
3) Don't request VLAN tag insertion of ibmvnic device when SKB
doesn't have VLAN tags at all.
4) IPV4 frag handling code has to accomodate the situation where two
threads try to insert the same fragment into the hash table at the
same time. From Eric Dumazet.
5) Relatedly, don't flow separate on protocol ports for fragmented
frames, also from Eric Dumazet.
6) Memory leaks in qed driver, from Denis Bolotin.
7) Correct valid MTU range in smsc95xx driver, from Stefan Wahren.
8) Validate cls_flower nested policies properly, from Jakub Kicinski.
9) Clearing of stats counters in mc88e6xxx driver doesn't retain
important bits in the G1_STATS_OP register causing the chip to
hang. Fix from Andrew Lunn"
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (41 commits)
act_mirred: clear skb->tstamp on redirect
net: dsa: mv88e6xxx: Fix clearing of stats counters
tipc: fix link re-establish failure
net: sched: cls_flower: validate nested enc_opts_policy to avoid warning
net: mvneta: correct typo
flow_dissector: do not dissect l4 ports for fragments
net: qualcomm: rmnet: Fix incorrect assignment of real_dev
net: aquantia: allow rx checksum offload configuration
net: aquantia: invalid checksumm offload implementation
net: aquantia: fixed enable unicast on 32 macvlan
net: aquantia: fix potential IOMMU fault after driver unbind
net: aquantia: synchronized flow control between mac/phy
net: smsc95xx: Fix MTU range
net: stmmac: Fix RX packet size > 8191
qed: Fix potential memory corruption
qed: Fix SPQ entries not returned to pool in error flows
qed: Fix blocking/unlimited SPQ entries leak
qed: Fix memory/entry leak in qed_init_sp_request()
inet: frags: better deal with smp races
net: hns3: bugfix for not checking return value
...
- fix build errors in binrpm-pkg and bindeb-pkg targets
- fix false positive matches in merge_config.sh
- fix build version mismatch in deb-pkg target
- fix dtbs_install handling in (bin)deb-pkg target
- revert a commit that allows setlocalversion to write to source tree
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Merge tag 'kbuild-fixes-v4.20' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild
Pull Kbuild fixes from Masahiro Yamada:
- fix build errors in binrpm-pkg and bindeb-pkg targets
- fix false positive matches in merge_config.sh
- fix build version mismatch in deb-pkg target
- fix dtbs_install handling in (bin)deb-pkg target
- revert a commit that allows setlocalversion to write to source tree
* tag 'kbuild-fixes-v4.20' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild:
builddeb: Fix inclusion of dtbs in debian package
Revert "scripts/setlocalversion: git: Make -dirty check more robust"
kbuild: deb-pkg: fix too low build version number
kconfig: merge_config: avoid false positive matches from comment lines
kbuild: deb-pkg: fix bindeb-pkg breakage when O= is used
kbuild: rpm-pkg: fix binrpm-pkg breakage when O= is used
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Merge tag 'for-4.20-rc1-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux
Pull btrfs fixes from David Sterba:
"Several fixes to recent release (4.19, fixes tagged for stable) and
other fixes"
* tag 'for-4.20-rc1-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux:
Btrfs: fix missing delayed iputs on unmount
Btrfs: fix data corruption due to cloning of eof block
Btrfs: fix infinite loop on inode eviction after deduplication of eof block
Btrfs: fix deadlock on tree root leaf when finding free extent
btrfs: avoid link error with CONFIG_NO_AUTO_INLINE
btrfs: tree-checker: Fix misleading group system information
Btrfs: fix missing data checksums after a ranged fsync (msync)
btrfs: fix pinned underflow after transaction aborted
Btrfs: fix cur_offset in the error case for nocow
error return cleanup paths.
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Merge tag 'ext4_for_linus_stable' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4
Pull ext4 fixes from Ted Ts'o:
"A large number of ext4 bug fixes, mostly buffer and memory leaks on
error return cleanup paths"
* tag 'ext4_for_linus_stable' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4:
ext4: missing !bh check in ext4_xattr_inode_write()
ext4: fix buffer leak in __ext4_read_dirblock() on error path
ext4: fix buffer leak in ext4_expand_extra_isize_ea() on error path
ext4: fix buffer leak in ext4_xattr_move_to_block() on error path
ext4: release bs.bh before re-using in ext4_xattr_block_find()
ext4: fix buffer leak in ext4_xattr_get_block() on error path
ext4: fix possible leak of s_journal_flag_rwsem in error path
ext4: fix possible leak of sbi->s_group_desc_leak in error path
ext4: remove unneeded brelse call in ext4_xattr_inode_update_ref()
ext4: avoid possible double brelse() in add_new_gdb() on error path
ext4: avoid buffer leak in ext4_orphan_add() after prior errors
ext4: avoid buffer leak on shutdown in ext4_mark_iloc_dirty()
ext4: fix possible inode leak in the retry loop of ext4_resize_fs()
ext4: fix missing cleanup if ext4_alloc_flex_bg_array() fails while resizing
ext4: add missing brelse() update_backups()'s error path
ext4: add missing brelse() add_new_gdb_meta_bg()'s error path
ext4: add missing brelse() in set_flexbg_block_bitmap()'s error path
ext4: avoid potential extra brelse in setup_new_flex_group_blocks()
Pull x86 fixes from Thomas Gleixner:
"A set of x86 fixes:
- Cure the LDT remapping to user space on 5 level paging which ended
up in the KASLR space
- Remove LDT mapping before freeing the LDT pages
- Make NFIT MCE handling more robust
- Unbreak the VSMP build by removing the dependency on paravirt ops
- Support broken PIT emulation on Microsoft hyperV
- Don't trace vmware_sched_clock() to avoid tracer recursion
- Remove -pipe from KBUILD CFLAGS which breaks clang and is also
slower on GCC
- Trivial coding style and typo fixes"
* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/cpu/vmware: Do not trace vmware_sched_clock()
x86/vsmp: Remove dependency on pv_irq_ops
x86/ldt: Remove unused variable in map_ldt_struct()
x86/ldt: Unmap PTEs for the slot before freeing LDT pages
x86/mm: Move LDT remap out of KASLR region on 5-level paging
acpi/nfit, x86/mce: Validate a MCE's address before using it
acpi/nfit, x86/mce: Handle only uncorrectable machine checks
x86/build: Remove -pipe from KBUILD_CFLAGS
x86/hyper-v: Fix indentation in hv_do_fast_hypercall16()
Documentation/x86: Fix typo in zero-page.txt
x86/hyper-v: Enable PIT shutdown quirk
clockevents/drivers/i8253: Add support for PIT shutdown quirk
Pull perf fixes from Thomas Gleixner:
"A bunch of perf tooling fixes:
- Make the Intel PT SQL viewer more robust
- Make the Intel PT debug log more useful
- Support weak groups in perf record so it's behaving the same way as
perf stat
- Display the LBR stats in callchain entries properly in perf top
- Handle different PMu names with common prefix properlin in pert
stat
- Start syscall augmenting in perf trace. Preparation for
architecture independent eBPF instrumentation of syscalls.
- Fix build breakage in JVMTI perf lib
- Fix arm64 tools build failure wrt smp_load_{acquire,release}"
* 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
perf tools: Do not zero sample_id_all for group members
perf tools: Fix undefined symbol scnprintf in libperf-jvmti.so
perf beauty: Use SRCARCH, ARCH=x86_64 must map to "x86" to find the headers
perf intel-pt: Add MTC and CYC timestamps to debug log
perf intel-pt: Add more event information to debug log
perf scripts python: exported-sql-viewer.py: Fix table find when table re-ordered
perf scripts python: exported-sql-viewer.py: Add help window
perf scripts python: exported-sql-viewer.py: Add Selected branches report
perf scripts python: exported-sql-viewer.py: Fall back to /usr/local/lib/libxed.so
perf top: Display the LBR stats in callchain entry
perf stat: Handle different PMU names with common prefix
perf record: Support weak groups
perf evlist: Move perf_evsel__reset_weak_group into evlist
perf augmented_syscalls: Start collecting pathnames in the BPF program
perf trace: Fix setting of augmented payload when using eBPF + raw_syscalls
perf trace: When augmenting raw_syscalls plug raw_syscalls:sys_exit too
perf examples bpf: Start augmenting raw_syscalls:sys_{start,exit}
tools headers barrier: Fix arm64 tools build failure wrt smp_load_{acquire,release}
Pull timer fix from Thomas Gleixner:
"Just the removal of a redundant call into the sched deadline overrun
check"
* 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
posix-cpu-timers: Remove useless call to check_dl_overrun()
Pull scheduler fixes from Thomas Gleixner:
"Two small scheduler fixes:
- Take hotplug lock in sched_init_smp(). Technically not really
required, but lockdep will complain other.
- Trivial comment fix in sched/fair"
* 'sched/urgent' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
sched/fair: Fix a comment in task_numa_fault()
sched/core: Take the hotplug lock in sched_init_smp()
Pull locking build fix from Thomas Gleixner:
"A single fix for a build fail with CONFIG_PROFILE_ALL_BRANCHES=y in
the qspinlock code"
* 'locking-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/qspinlock: Fix compile error
Pull core fixes from Thomas Gleixner:
"A couple of fixlets for the core:
- Kernel doc function documentation fixes
- Missing prototypes for weak watchdog functions"
* 'core-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
resource/docs: Complete kernel-doc style function documentation
watchdog/core: Add missing prototypes for weak functions
resource/docs: Fix new kernel-doc warnings
If sch_fq is used at ingress, skbs that might have been
timestamped by net_timestamp_set() if a packet capture
is requesting timestamps could be delayed by arbitrary
amount of time, since sch_fq time base is MONOTONIC.
Fix this problem by moving code from sch_netem.c to act_mirred.c.
Fixes: fb420d5d91 ("tcp/fq: move back to CLOCK_MONOTONIC")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
The mv88e6161 would sometime fail to probe with a timeout waiting for
the switch to complete an operation. This operation is supposed to
clear the statistics counters. However, due to a read/modify/write,
without the needed mask, the operation actually carried out was more
random, with invalid parameters, resulting in the switch not
responding. We need to preserve the histogram mode bits, so apply a
mask to keep them.
Reported-by: Chris Healy <Chris.Healy@zii.aero>
Fixes: 40cff8fca9 ("net: dsa: mv88e6xxx: Fix stats histogram mode")
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
When a link failure is detected locally, the link is reset, the flag
link->in_session is set to false, and a RESET_MSG with the 'stopping'
bit set is sent to the peer.
The purpose of this bit is to inform the peer that this endpoint just
is going down, and that the peer should handle the reception of this
particular RESET message as a local failure. This forces the peer to
accept another RESET or ACTIVATE message from this endpoint before it
can re-establish the link. This again is necessary to ensure that
link session numbers are properly exchanged before the link comes up
again.
If a failure is detected locally at the same time at the peer endpoint
this will do the same, which is also a correct behavior.
However, when receiving such messages, the endpoints will not
distinguish between 'stopping' RESETs and ordinary ones when it comes
to updating session numbers. Both endpoints will copy the received
session number and set their 'in_session' flags to true at the
reception, while they are still expecting another RESET from the
peer before they can go ahead and re-establish. This is contradictory,
since, after applying the validation check referred to below, the
'in_session' flag will cause rejection of all such messages, and the
link will never come up again.
We now fix this by not only handling received RESET/STOPPING messages
as a local failure, but also by omitting to set a new session number
and the 'in_session' flag in such cases.
Fixes: 7ea817f4e8 ("tipc: check session number before accepting link protocol messages")
Signed-off-by: Jon Maloy <jon.maloy@ericsson.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Commit 37c8a5fafa ("kbuild: consolidate Devicetree dtb build rules")
moved the location of 'dtbs_install' target which caused dtbs to not be
installed when building debian package with 'bindeb-pkg' target. Update
the builddeb script to use the same logic that determines if there's a
'dtbs_install' target which is presence of the arch dts directory. Also,
use CONFIG_OF_EARLY_FLATTREE instead of CONFIG_OF as that's a better
indication of whether we are building dtbs.
This commit will also have the side effect of installing dtbs on any
arch that has dts files. Previously, it was dependent on whether the
arch defined 'dtbs_install'.
Fixes: 37c8a5fafa ("kbuild: consolidate Devicetree dtb build rules")
Reported-by: Nuno Gonçalves <nunojpg@gmail.com>
Signed-off-by: Rob Herring <robh@kernel.org>
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
This reverts commit 6147b1cf19.
The reverted patch results in attempted write access to the source
repository, even if that repository is mounted read-only.
Output from "strace git status -uno --porcelain":
getcwd("/tmp/linux-test", 129) = 16
open("/tmp/linux-test/.git/index.lock", O_RDWR|O_CREAT|O_EXCL|O_CLOEXEC, 0666) =
-1 EROFS (Read-only file system)
While git appears to be able to handle this situation, a monitored
build environment (such as the one used for Chrome OS kernel builds)
may detect it and bail out with an access violation error. On top of
that, the attempted write access suggests that git _will_ write to the
file even if a build output directory is specified. Users may have the
reasonable expectation that the source repository remains untouched in
that situation.
Fixes: 6147b1cf19 ("scripts/setlocalversion: git: Make -dirty check more robust"
Cc: Genki Sky <sky@genki.is>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Reviewed-by: Brian Norris <briannorris@chromium.org>
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Since commit b41d920acf ("kbuild: deb-pkg: split generating packaging
and build"), the build version of the kernel contained in a deb package
is too low by 1.
Prior to the bad commit, the kernel was built first, then the number
in .version file was read out, and written into the debian control file.
Now, the debian control file is created before the kernel is actually
compiled, which is causing the version number mismatch.
Let the mkdebian script pass KBUILD_BUILD_VERSION=${revision} to require
the build system to use the specified version number.
Fixes: b41d920acf ("kbuild: deb-pkg: split generating packaging and build")
Reported-by: Doug Smythies <dsmythies@telus.net>
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Tested-by: Doug Smythies <dsmythies@telus.net>
The current SED_CONFIG_EXP could match to comment lines in config
fragment files, especially when CONFIG_PREFIX_ is empty. For example,
Buildroot uses empty prefixing; starting symbols with BR2_ is just
convention.
Make the sed expression more robust against false positives from
comment lines. The new sed expression matches to only valid patterns.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Reviewed-by: Petr Vorel <petr.vorel@gmail.com>
Reviewed-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
Here are some small tty fixes for 4.20-rc2
One of these missed the original 4.19-final release, I missed that I
hadn't done a pull request for it as it was in linux-next and my branch
for a long time, that's my fault.
The others are small, fixing some reported issues and finally fixing the
termios mess for alpha so that glibc has a chance to implement some
missing functionality that has been pending for many years now.
All of these have been in linux-next with no reported issues.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'tty-4.20-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty
Pull tty/serial fixes from Greg KH:
"Here are some small tty fixes for 4.20-rc2
One of these missed the original 4.19-final release, I missed that I
hadn't done a pull request for it as it was in linux-next and my
branch for a long time, that's my fault.
The others are small, fixing some reported issues and finally fixing
the termios mess for alpha so that glibc has a chance to implement
some missing functionality that has been pending for many years now.
All of these have been in linux-next with no reported issues"
* tag 'tty-4.20-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty:
serial: sh-sci: Fix could not remove dev_attr_rx_fifo_timeout
arch/alpha, termios: implement BOTHER, IBSHIFT and termios2
termios, tty/tty_baudrate.c: fix buffer overrun
vt: fix broken display when running aptitude
serial: sh-sci: Fix receive on SCIFA/SCIFB variants with DMA
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Merge tag 'drm-fixes-2018-11-11' of git://anongit.freedesktop.org/drm/drm
Pull drm fixes from Dave Airlie:
"drm: i915, amdgpu, sun4i, exynos and etnaviv fixes:
- amdgpu has some display fixes, KFD ioctl fixes and a Vega20 bios
interaction fix.
- sun4i has some NULL checks added
- i915 has a 32-bit system fix, LPE audio oops, and HDMI2.0 clock
fixes.
- Exynos has a 3 regression fixes (one frame counter, fbdev missing,
dsi->panel check)
- Etnaviv has a single fencing fix for GPU recovery"
* tag 'drm-fixes-2018-11-11' of git://anongit.freedesktop.org/drm/drm: (39 commits)
drm/amd/amdgpu/dm: Fix dm_dp_create_fake_mst_encoder()
drm/amd/display: Drop reusing drm connector for MST
drm/amd/display: Cleanup MST non-atomic code workaround
drm/amd/powerplay: always use fast UCLK switching when UCLK DPM enabled
drm/amd/powerplay: set a default fclk/gfxclk ratio
drm/amdgpu/display/dce11: only enable FBC when selected
drm/amdgpu/display/dm: handle FBC dc feature parameter
drm/amdgpu/display/dc: add FBC to dc_config
drm/amdgpu: add DC feature mask module parameter
drm/amdgpu/display: check if fbc is available in set_static_screen_control (v2)
drm/amdgpu/vega20: add CLK base offset
drm/amd/display: Stop leaking planes
drm/amd/display: Fix misleading buffer information
Revert "drm/amd/display: set backlight level limit to 1"
drm/amd: Update atom_smu_info_v3_3 structure
drm/i915: Fix ilk+ watermarks when disabling pipes
drm/sun4i: tcon: prevent tcon->panel dereference if NULL
drm/sun4i: tcon: fix check of tcon->panel null pointer
drm/i915: Don't oops during modeset shutdown after lpe audio deinit
drm/i915: Mark pin flags as u64
...
Pull namespace fixes from Eric Biederman:
"I believe all of these are simple obviously correct bug fixes. These
fall into two groups:
- Fixing the implementation of MNT_LOCKED which prevents lesser
privileged users from seeing unders mounts created by more
privileged users.
- Fixing the extended uid and group mapping in user namespaces.
As well as ensuring the code looks correct I have spot tested these
changes as well and in my testing the fixes are working"
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace:
mount: Prevent MNT_DETACH from disconnecting locked mounts
mount: Don't allow copying MNT_UNBINDABLE|MNT_LOCKED mounts
mount: Retest MNT_LOCKED in do_umount
userns: also map extents in the reverse map to kernel IDs
imbalance, two to mark some Amlogic clks as critical, and one final
one that fixes a clk name for the Qualcomm driver merged this cycle.
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Merge tag 'clk-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux
Pull clk fixes from Stephen Boyd:
"A small set of fixes for clk drivers.
One to fix a DT refcount imbalance, two to mark some Amlogic clks as
critical, and one final one that fixes a clk name for the Qualcomm
driver merged this cycle"
* tag 'clk-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux:
clk: qcom: gcc: Fix board clock node name
clk: meson: axg: mark fdiv2 and fdiv3 as critical
clk: meson-gxbb: set fclk_div3 as CLK_IS_CRITICAL
clk: fixed-factor: fix of_node_get-put imbalance
TCA_FLOWER_KEY_ENC_OPTS and TCA_FLOWER_KEY_ENC_OPTS_MASK can only
currently contain further nested attributes, which are parsed by
hand, so the policy is never actually used resulting in a W=1
build warning:
net/sched/cls_flower.c:492:1: warning: ‘enc_opts_policy’ defined but not used [-Wunused-const-variable=]
enc_opts_policy[TCA_FLOWER_KEY_ENC_OPTS_MAX + 1] = {
Add the validation anyway to avoid potential bugs when other
attributes are added and to make the attribute structure slightly
more clear. Validation will also set extact to point to bad
attribute on error.
Fixes: 0a6e77784f ("net/sched: allow flower to match tunnel options")
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Acked-by: Simon Horman <simon.horman@netronome.com>
Acked-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
- Fix occasional page fault during boot due to memblock resizing before
the linear map is up.
- Define NET_IP_ALIGN to 0 to improve the DMA performance on some
platforms.
- lib/raid6 test build fix.
- .mailmap update for Punit Agrawal
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Merge tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
Pull arm64 fixes from Catalin Marinas:
- Fix occasional page fault during boot due to memblock resizing before
the linear map is up.
- Define NET_IP_ALIGN to 0 to improve the DMA performance on some
platforms.
- lib/raid6 test build fix.
- .mailmap update for Punit Agrawal
* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
arm64: memblock: don't permit memblock resizing until linear mapping is up
arm64: mm: define NET_IP_ALIGN to 0
lib/raid6: Fix arm64 test build
mailmap: Update email for Punit Agrawal
