| Age | Commit message (Collapse) | Author |
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Marking CPUs stopped by smp_send_stop as offline can cause warnings
due to cross-CPU wakeups. This trace was noticed on a busy system
running a sysrq+c crash test, after the injected crash:
WARNING: CPU: 51 PID: 1546 at kernel/sched/core.c:1179 set_task_cpu+0x22c/0x240
CPU: 51 PID: 1546 Comm: kworker/u352:1 Tainted: G D
Workqueue: mlx5e mlx5e_update_stats_work [mlx5_core]
[...]
NIP [c00000000017c21c] set_task_cpu+0x22c/0x240
LR [c00000000017d580] try_to_wake_up+0x230/0x720
Call Trace:
[c000000001017700] runqueues+0x0/0xb00 (unreliable)
[c00000000017d580] try_to_wake_up+0x230/0x720
[c00000000015a214] insert_work+0x104/0x140
[c00000000015adb0] __queue_work+0x230/0x690
[c000003fc5007910] [c00000000015b26c] queue_work_on+0x5c/0x90
[c0080000135fc8f8] mlx5_cmd_exec+0x538/0xcb0 [mlx5_core]
[c008000013608fd0] mlx5_core_access_reg+0x140/0x1d0 [mlx5_core]
[c00800001362777c] mlx5e_update_pport_counters.constprop.59+0x6c/0x90 [mlx5_core]
[c008000013628868] mlx5e_update_ndo_stats+0x28/0x90 [mlx5_core]
[c008000013625558] mlx5e_update_stats_work+0x68/0xb0 [mlx5_core]
[c00000000015bcec] process_one_work+0x1bc/0x5f0
[c00000000015ecac] worker_thread+0xac/0x6b0
[c000000000168338] kthread+0x168/0x1b0
[c00000000000b628] ret_from_kernel_thread+0x5c/0xb4
This happens because firstly the CPU is not really offline in the
usual sense, processes and interrupts have not been migrated away.
Secondly smp_send_stop does not happen atomically on all CPUs, so
one CPU can have marked itself offline, while another CPU is still
running processes or interrupts which can affect the first CPU.
Fix this by just not marking the CPU as offline. It's more like
frozen in time, so offline does not really reflect its state properly
anyway. There should be nothing in the crash/panic path that walks
online CPUs and synchronously waits for them, so this change should
not introduce new hangs.
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
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Similarly to commit 855bfe0de1 ("powerpc: hard disable irqs in
smp_send_stop loop"), irqs should be hard disabled by
panic_smp_self_stop.
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
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In the device tree CPU features quirk code we want to set
CPU_FTR_POWER9_DD2_1 on all Power9s that aren't DD2.0 or earlier. But
we got the logic wrong and instead set it on all CPUs that aren't
Power9 DD2.0 or earlier, ie. including Power8.
Fix it by making sure we're on a Power9. This isn't a bug in practice
because the only code that checks the feature is Power9 only to begin
with. But we'll backport it anyway to avoid confusion.
Fixes: 9e9626ed3a4a ("powerpc/64s: Fix POWER9 DD2.2 and above in DT CPU features")
Cc: stable@vger.kernel.org # v4.17+
Reported-by: Paul Mackerras <paulus@samba.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Acked-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
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The patch 99baac21e4 ("mm: fix MADV_[FREE|DONTNEED] TLB flush miss
problem") added a force flush mode to the mmu_gather flush, which
unconditionally flushes the entire address range being invalidated
(even if actual ptes only covered a smaller range), to solve a problem
with concurrent threads invalidating the same PTEs causing them to
miss TLBs that need flushing.
This does not work with powerpc that invalidates mmu_gather batches
according to page size. Have powerpc flush all possible page sizes in
the range if it encounters this concurrency condition.
Patch 4647706ebe ("mm: always flush VMA ranges affected by
zap_page_range") does add a TLB flush for all page sizes on powerpc for
the zap_page_range case, but that is to be removed and replaced with
the mmu_gather flush to avoid redundant flushing. It is also thought to
not cover other obscure race conditions:
https://lkml.kernel.org/r/BD3A0EBE-ECF4-41D4-87FA-C755EA9AB6BD@gmail.com
Hash does not have a problem because it invalidates TLBs inside the
page table locks.
Reported-by: Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com>
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
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In binutils 2.26 a new opcode for the "wait" instruction was added for the
POWER9 and has precedence over the one specific to the e500mc. Commit
ebf714ff3756 ("powerpc/e500mc: Add support for the wait instruction in
e500_idle") uses this instruction specifically on the e500mc to work around
an erratum.
This results in an invalid instruction in idle_e500 when we build for the
e500mc on bintutils >= 2.26 with the default assembler machine type.
Since multiplatform between e500 and non-e500 is not supported, set the
assembler machine type globaly when CONFIG_PPC_E500MC=y.
Signed-off-by: Michael Jeanson <mjeanson@efficios.com>
Reviewed-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
CC: Benjamin Herrenschmidt <benh@kernel.crashing.org>
CC: Paul Mackerras <paulus@samba.org>
CC: Michael Ellerman <mpe@ellerman.id.au>
CC: Kumar Gala <galak@kernel.crashing.org>
CC: Vakul Garg <vakul.garg@nxp.com>
CC: Scott Wood <swood@redhat.com>
CC: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
CC: linuxppc-dev@lists.ozlabs.org
CC: linux-kernel@vger.kernel.org
CC: stable@vger.kernel.org
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
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This commit fixes a rare but possible case when the clk rate is updated
without update of the regulator voltage.
At boot up, CPUfreq checks if the system is running at the right freq. This
is a sanity check in case a bootloader set clk rate that is outside of freq
table present with cpufreq core. In such cases system can be unstable so
better to change it to a freq that is preset in freq-table.
The CPUfreq takes next freq that is >= policy->cur and this is our
target_freq that needs to be set now.
dev_pm_opp_set_rate(dev, target_freq) checks the target_freq and the
old_freq (a current rate). If these are equal it returns early. If not,
it searches for OPP (old_opp) that fits best to old_freq (not listed in
the table) and updates old_freq (!).
Here, we can end up with old_freq = old_opp.rate = target_freq, which
is not handled in _generic_set_opp_regulator(). It's supposed to update
voltage only when freq > old_freq || freq > old_freq.
if (freq > old_freq) {
ret = _set_opp_voltage(dev, reg, new_supply);
[...]
if (freq < old_freq) {
ret = _set_opp_voltage(dev, reg, new_supply);
if (ret)
It results in, no voltage update while clk rate is updated.
Example:
freq-table = {
1000MHz 1.15V
666MHZ 1.10V
333MHz 1.05V
}
boot-up-freq = 800MHz # not listed in freq-table
freq = target_freq = 1GHz
old_freq = 800Mhz
old_opp = _find_freq_ceil(opp_table, &old_freq); #(old_freq is modified!)
old_freq = 1GHz
Fixes: 6a0712f6f199 ("PM / OPP: Add dev_pm_opp_set_rate()")
Cc: 4.6+ <stable@vger.kernel.org> # v4.6+
Signed-off-by: Waldemar Rymarkiewicz <waldemar.rymarkiewicz@gmail.com>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
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When scaling max/min settings are changed, internally they are converted
to a ratio using the max turbo 1 core turbo frequency. This works fine
when 1 core max is same irrespective of the core. But under Turbo 3.0,
this will not be the case. For example:
Core 0: max turbo pstate: 43 (4.3GHz)
Core 1: max turbo pstate: 45 (4.5GHz)
In this case 1 core turbo ratio will be maximum of all, so it will be
45 (4.5GHz). Suppose scaling max is set to 4GHz (ratio 40) for all cores
,then on core one it will be
= max_state * policy->max / max_freq;
= 43 * (4000000/4500000) = 38 (3.8GHz)
= 38
which is 200MHz less than the desired.
On core2, it will be correctly set to ratio 40 (4GHz). Same holds true
for scaling min frequency limit. So this requires usage of correct turbo
max frequency for core one, which in this case is 4.3GHz. So we need to
adjust per CPU cpu->pstate.turbo_freq using the maximum HWP ratio of that
core.
This change uses the HWP capability of a core to adjust max turbo
frequency. But since Broadwell HWP doesn't use ratios in the HWP
capabilities, we have to use legacy max 1 core turbo ratio. This is not
a problem as the HWP capabilities don't differ among cores in Broadwell.
We need to check for non Broadwell CPU model for applying this change,
though.
Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Cc: 4.6+ <stable@vger.kernel.org> # 4.6+
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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Add device remove and module exit code to make the driver
functioning as a loadable module.
Fixes: ac28927659be (cpufreq: kryo: allow building as a loadable module)
Signed-off-by: Ilia Lin <ilia.lin@gmail.com>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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In event of error returned by the nvmem_cell_read() non-pointer value
may be dereferenced. Fix this with error handling.
Additionally free the allocated speedbin buffer, as per the API.
Fixes: 9ce36edd1a52 (cpufreq: Add Kryo CPU scaling driver)
Signed-off-by: Ilia Lin <ilia.lin@gmail.com>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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Commit b5793b0d92c9 added support for building the nanosleep compat system
call on 32-bit architectures, but missed one change in nanosleep_copyout(),
which would trigger a BUG() as soon as any architecture is switched over to
use it.
Use the proper config symbol to enable the code path.
Fixes: Commit b5793b0d92c9 ("posix-timers: Make compat syscalls depend on CONFIG_COMPAT_32BIT_TIME")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: y2038@lists.linaro.org
Cc: Anna-Maria Gleixner <anna-maria@linutronix.de>
Cc: Deepa Dinamani <deepa.kernel@gmail.com>
Cc: "Rafael J. Wysocki" <rafael.j.wysocki@intel.com>
Link: https://lkml.kernel.org/r/20180618140811.2998503-1-arnd@arndb.de
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Ctxdmas for cursors from all heads are setup in the core channel, and due
to us tracking allocated handles per-window, we were failing with -EEXIST
on multiple-head setups trying to allocate duplicate handles.
The cursor code is hardcoded to use the core channel vram ctxdma already,
so just skip ctxdma allocation for cursor fbs to fix the issue.
Fixes: 5bca1621c07 ("drm/nouveau/kms/nv50-: move fb ctxdma tracking into windows")
Reported-by: Adam Borowski <kilobyte@angband.pl>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
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Pull jfs fix from Dave Kleikamp:
"This fixes a too-small allocation in the xattr code"
* tag 'jfs-4.18' of git://github.com/kleikamp/linux-shaggy:
jfs: Fix inconsistency between memory allocation and ea_buf->max_size
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git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux
Pull s390 updates from Martin Schwidefsky:
"common I/O layer
- Fix bit-fields crossing storage-unit boundaries in css_general_char
dasd driver
- Avoid a sparse warning in regard to the queue lock
- Allocate the struct dasd_ccw_req as per request data. Only for
internal I/O is the structure allocated separately
- Remove the unused function dasd_kmalloc_set_cda
- Save a few bytes in struct dasd_ccw_req by reordering fields
- Convert remaining users of dasd_kmalloc_request to
dasd_smalloc_request and remove the now unused function
vfio/ccw
- Refactor and improve pfn_array_alloc_pin/pfn_array_pin
- Add a new tracepoint for failed vfio/ccw requests
- Add a CCW translation improvement to accept more requests as valid
- Bug fixes"
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux:
s390/dasd: only use preallocated requests
s390/dasd: reshuffle struct dasd_ccw_req
s390/dasd: remove dasd_kmalloc_set_cda
s390/dasd: move dasd_ccw_req to per request data
s390/dasd: simplify locking in process_final_queue
s390/cio: sanitize css_general_characteristics definition
vfio: ccw: add tracepoints for interesting error paths
vfio: ccw: set ccw->cda to NULL defensively
vfio: ccw: refactor and improve pfn_array_alloc_pin()
vfio: ccw: shorten kernel doc description for pfn_array_pin()
vfio: ccw: push down unsupported IDA check
vfio: ccw: fix error return in vfio_ccw_sch_event
s390/archrandom: Rework arch random implementation.
s390/net: add pnetid support
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The patch fixed a W=1 warning but broke the ia64 build:
CC mm/memblock.o
mm/memblock.c:1340: error: redefinition of `memblock_virt_alloc_try_nid_raw'
./include/linux/bootmem.h:335: error: previous definition of `memblock_virt_alloc_try_nid_raw' was here
Because inlcude/linux/bootmem.h says
#if defined(CONFIG_HAVE_MEMBLOCK) && defined(CONFIG_NO_BOOTMEM)
whereas mm/Makefile says
obj-$(CONFIG_HAVE_MEMBLOCK) += memblock.o
So revert 26f09e9b3a06 ("mm/memblock: add missing include
<linux/bootmem.h>") while a full fix can be worked on.
Fixes: 26f09e9b3a06 ("mm/memblock: add missing include <linux/bootmem.h>")
Reported-by: Tony Luck <tony.luck@gmail.com>
Cc: Mathieu Malaterre <malat@debian.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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And update my email address.
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Signed-off-by: Andy Lutomirski <luto@kernel.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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The erratum and workaround are described by BCM5300X-ES300-RDS.pdf as
below.
R10: PCIe Transactions Periodically Fail
Description: The BCM5300X PCIe does not maintain transaction ordering.
This may cause PCIe transaction failure.
Fix Comment: Add a dummy PCIe configuration read after a PCIe
configuration write to ensure PCIe configuration access
ordering. Set ES bit of CP0 configu7 register to enable
sync function so that the sync instruction is functional.
Resolution: hndpci.c: extpci_write_config()
hndmips.c: si_mips_init()
mipsinc.h CONF7_ES
This is fixed by the CFE MIPS bcmsi chipset driver also for BCM47XX.
Also the dummy PCIe configuration read is already implemented in the
Linux BCMA driver.
Enable ExternalSync in Config7 when CONFIG_BCMA_DRIVER_PCI_HOSTMODE=y
too so that the sync instruction is externalised.
Signed-off-by: Tokunori Ikegami <ikegami@allied-telesis.co.jp>
Reviewed-by: Paul Burton <paul.burton@mips.com>
Acked-by: Hauke Mehrtens <hauke@hauke-m.de>
Cc: Chris Packham <chris.packham@alliedtelesis.co.nz>
Cc: Rafał Miłecki <zajec5@gmail.com>
Cc: linux-mips@linux-mips.org
Cc: stable@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/19461/
Signed-off-by: James Hogan <jhogan@kernel.org>
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I used bad names in my clumsiness when rewriting many board
files to use GPIO descriptors instead of platform data. A few
had the platform_device ID set to -1 which would indeed give
the device name "i2c-gpio".
But several had it set to >=0 which gives the names
"i2c-gpio.0", "i2c-gpio.1" ...
Fix the one affected board in the MIPS tree. Sorry.
Fixes: b2e63555592f ("i2c: gpio: Convert to use descriptors")
Reported-by: Simon Guinot <simon.guinot@sequanux.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Reviewed-by: Paul Burton <paul.burton@mips.com>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Wolfram Sang <wsa@the-dreams.de>
Cc: Simon Guinot <simon.guinot@sequanux.org>
Cc: linux-mips@linux-mips.org
Cc: <stable@vger.kernel.org> # 4.15+
Patchwork: https://patchwork.linux-mips.org/patch/19387/
Signed-off-by: James Hogan <jhogan@kernel.org>
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Run the completer task to post a work completion after processing
a memory registration or invalidate work request. This covers the
case where the memory registration or invalidate was the last work
request posted to the qp.
Signed-off-by: Vijay Immanuel <vijayi@attalasystems.com>
Reviewed-by: Yonatan Cohen <yonatanc@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
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Few kernel applications like SCST-iSER create CQ using ib_create_cq(),
where accessing CQ structures using rdma restrack tool leads to below NULL
pointer dereference. This patch saves caller kernel module name similar to
ib_alloc_cq().
BUG: unable to handle kernel NULL pointer dereference at (null)
IP: [<ffffffff8132ca70>] skip_spaces+0x30/0x30
PGD 738bac067 PUD 8533f0067 PMD 0
Oops: 0000 [#1] SMP
R10: ffff88017fc03300 R11: 0000000000000246 R12: 0000000000000000
R13: ffff88082fa5a668 R14: ffff88017475a000 R15: 0000000000000000
FS: 00002b32726582c0(0000) GS:ffff88087fc40000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 00000008491a1000 CR4: 00000000003607e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
[<ffffffffc05af69c>] ? fill_res_name_pid+0x7c/0x90 [ib_core]
[<ffffffffc05af79f>] fill_res_cq_entry+0xef/0x170 [ib_core]
[<ffffffffc05af4c4>] res_get_common_dumpit+0x3c4/0x480 [ib_core]
[<ffffffffc05af5d3>] nldev_res_get_cq_dumpit+0x13/0x20 [ib_core]
[<ffffffff815bc1e7>] netlink_dump+0x117/0x2e0
[<ffffffff815bcb8b>] __netlink_dump_start+0x1ab/0x230
[<ffffffffc059fead>] ibnl_rcv_msg+0x11d/0x1f0 [ib_core]
[<ffffffffc05af5c0>] ? nldev_res_get_mr_dumpit+0x20/0x20 [ib_core]
[<ffffffffc059fd90>] ? rdma_nl_multicast+0x30/0x30 [ib_core]
[<ffffffff815bea49>] netlink_rcv_skb+0xa9/0xc0
[<ffffffffc05a0018>] ibnl_rcv+0x98/0xb0 [ib_core]
[<ffffffff815be132>] netlink_unicast+0xf2/0x1b0
[<ffffffff815be50f>] netlink_sendmsg+0x31f/0x6a0
[<ffffffff8156b580>] sock_sendmsg+0xb0/0xf0
[<ffffffff816ace9e>] ? _raw_spin_unlock_bh+0x1e/0x20
[<ffffffff8156f998>] ? release_sock+0x118/0x170
[<ffffffff8156b731>] SYSC_sendto+0x121/0x1c0
[<ffffffff81568340>] ? sock_alloc_file+0xa0/0x140
[<ffffffff81221265>] ? __fd_install+0x25/0x60
[<ffffffff8156c2ce>] SyS_sendto+0xe/0x10
[<ffffffff816b6c2a>] system_call_fastpath+0x16/0x1b
RIP [<ffffffff8132ca70>] skip_spaces+0x30/0x30
RSP <ffff88072be97760>
CR2: 0000000000000000
Cc: <stable@vger.kernel.org>
Fixes: f66c8ba4c9fa ("RDMA/core: Save kernel caller name when creating PD and CQ objects")
Reviewed-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Potnuri Bharat Teja <bharat@chelsio.com>
Reviewed-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
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Add missing SPDX License Identifiers to Makefile(s).
Signed-off-by: Shuah Khan (Samsung OSG) <shuah@kernel.org>
Reviewed-by: Tom Hromatka <tom.hromatka@oracle.com>
Signed-off-by: Shuah Khan (Samsung OSG) <shuah@kernel.org>
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Delete RUN_TESTS and EMIT_TESTS overrides and use common defines in
lib.mk. Common defines work just fine and there is no need to define
custom overrides.
Signed-off-by: Shuah Khan (Samsung OSG) <shuah@kernel.org>
Reviewed-by: Tom Hromatka <tom.hromatka@oracle.com>
Signed-off-by: Shuah Khan (Samsung OSG) <shuah@kernel.org>
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sparc64 test fails with the following errors on non-sparc64 systems. Fix
the Makefile to do nothing on non-sparc64 systems to suppress the errors:
make run_tests
adi-test.c: Assembler messages:
adi-test.c:302: Error: no such instruction: `rd %tick,%r13'
adi-test.c:304: Error: no such instruction: `rd %tick,%rbp'
adi-test.c:190: Error: no such instruction: `rd %tick,%rbp'
adi-test.c:192: Error: no such instruction: `rd %tick,%rdx'
adi-test.c:273: Error: no such instruction: `rd %tick,%rbx'
adi-test.c:276: Error: no such instruction: `rd %tick,%rdx'
adi-test.c:217: Error: no such instruction: `rd %tick,%rbp'
adi-test.c:220: Error: no such instruction: `rd %tick,%rdx'
adi-test.c:79: Error: no such instruction: `rd %tick,%rax'
adi-test.c:79: Error: no such instruction: `rd %tick,%rax'
adi-test.c:79: Error: no such instruction: `rd %tick,%rax'
adi-test.c:79: Error: no such instruction: `rd %tick,%rax'
adi-test.c:246: Error: no such instruction: `rd %tick,%rbp'
adi-test.c:248: Error: no such instruction: `rd %tick,%rdx'
adi-test.c:79: Error: no such instruction: `rd %tick,%rax'
adi-test.c:79: Error: no such instruction: `rd %tick,%rax'
adi-test.c:79: Error: no such instruction: `rd %tick,%rax'
<builtin>: recipe for target 'adi-test' failed
make[1]: *** [adi-test] Error 1
adi: [FAIL]
./drivers_test.sh: 24: ./drivers_test.sh: ./adi-test: not found
../lib.mk:73: recipe for target 'run_tests' failed
make: *** [run_tests] Error 1
Signed-off-by: Shuah Khan (Samsung OSG) <shuah@kernel.org>
Reviewed-by: Tom Hromatka <tom.hromatka@oracle.com>
Acked-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Shuah Khan (Samsung OSG) <shuah@kernel.org>
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Unless the software synchronization objects (CONFIG_SW_SYNC) is enabled,
the sync test will be skipped:
TAP version 13
1..0 # Skipped: Sync framework not supported by kernel
Add a config fragment file to be able to run "make kselftest-merge" to
enable relevant configuration required in order to run the sync test.
Signed-off-by: Fathi Boudra <fathi.boudra@linaro.org>
Link: https://lkml.org/lkml/2017/5/5/14
Signed-off-by: Anders Roxell <anders.roxell@linaro.org>
Signed-off-by: Shuah Khan (Samsung OSG) <shuah@kernel.org>
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When vm test is skipped because of unmet dependencies and/or unsupported
configuration, it exits with error which is treated as a fail by the
Kselftest framework. This leads to false negative result even when the
test could not be run.
Change it to return kselftest skip code when a test gets skipped to
clearly report that the test could not be run.
Kselftest framework SKIP code is 4 and the framework prints appropriate
messages to indicate that the test is skipped.
Signed-off-by: Shuah Khan (Samsung OSG) <shuah@kernel.org>
Acked-by: Mike Rapoport <rppt@linux.vnet.ibm.com>
Signed-off-by: Shuah Khan (Samsung OSG) <shuah@kernel.org>
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When zram test is skipped because of unmet dependencies and/or
unsupported configuration, it exits with error which is treated as
a fail by the Kselftest framework. This leads to false negative result
even when the test could not be run.
Change it to return kselftest skip code when a test gets skipped to
clearly report that the test could not be run.
Kselftest framework SKIP code is 4 and the framework prints appropriate
messages to indicate that the test is skipped.
Signed-off-by: Shuah Khan (Samsung OSG) <shuah@kernel.org>
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When user test is skipped because of unmet dependencies and/or
unsupported configuration, it exits with error which is treated as
a fail by the Kselftest framework. This leads to false negative result
even when the test could not be run.
Change it to return kselftest skip code when a test gets skipped to
clearly report that the test could not be run. Add an explicit check
for module presence and return skip code if module isn't present.
Kselftest framework SKIP code is 4 and the framework prints appropriate
messages to indicate that the test is skipped.
Signed-off-by: Shuah Khan (Samsung OSG) <shuah@kernel.org>
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When sysctl test is skipped because of unmet dependencies and/or
unsupported configuration, it exits with error which is treated as
a fail by the Kselftest framework. This leads to false negative result
even when the test could not be run.
Change it to return kselftest skip code when a test gets skipped to
clearly report that the test could not be run.
Changed return code to kselftest skip code in skip error legs that check
requirements and module probe test error leg.
Kselftest framework SKIP code is 4 and the framework prints appropriate
messages to indicate that the test is skipped.
Signed-off-by: Shuah Khan (Samsung OSG) <shuah@kernel.org>
Reviewed-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Shuah Khan (Samsung OSG) <shuah@kernel.org>
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When static_keys test is skipped because of unmet dependencies and/or
unsupported configuration, it exits with error which is treated as a fail
by the Kselftest framework. This leads to false negative result even when
the test could not be run.
Change it to return kselftest skip code when a test gets skipped to clearly
report that the test could not be run.
Added an explicit searches for test_static_key_base and test_static_keys
modules and return skip code if they aren't found to differentiate between
the failure to load the module condition and module not found condition.
Kselftest framework SKIP code is 4 and the framework prints appropriate
messages to indicate that the test is skipped.
Signed-off-by: Shuah Khan (Samsung OSG) <shuah@kernel.org>
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When pstore_post_reboot test gets skipped because of unmet dependencies
and/or unsupported configuration, it returns 0 which is treated as a pass
by the Kselftest framework. This leads to false positive result even when
the test could not be run.
Change it to return kselftest skip code when a test gets skipped to clearly
report that the test could not be run.
Kselftest framework SKIP code is 4 and the framework prints appropriate
messages to indicate that the test is skipped.
Signed-off-by: Shuah Khan (Samsung OSG) <shuah@kernel.org>
Reviewed-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Shuah Khan (Samsung OSG) <shuah@kernel.org>
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On this system EC interrupt triggers constantly kicking devices out of
low power states and thus blocking power management. The system also has
a PCIe root port hosting Alpine Ridge Thunderbolt controller and it
never gets a chance to go to D3cold because of this.
Since the power button works the same regardless if EC interrupt is
enabled or not during s2idle, add a quirk for this machine that sets
ec_no_wakeup=true preventing spurious wakeups.
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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This reverts commit 2c17a4368aad2b88b68e4390c819e226cf320f70.
The offending commit triggers a run-time fault when accessing the panel
element of the sun4i_tcon structure when no such panel is attached.
It was apparently assumed in said commit that a panel is always used with
the TCON. Although it is often the case, this is not always true.
For instance a bridge might be used instead of a panel.
This issue was discovered using an A13-OLinuXino, that uses the TCON
in RGB mode for a simple DAC-based VGA bridge.
Cc: stable@vger.kernel.org
Signed-off-by: Paul Kocialkowski <paul.kocialkowski@bootlin.com>
Signed-off-by: Maxime Ripard <maxime.ripard@bootlin.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180613081647.31183-1-paul.kocialkowski@bootlin.com
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The function, external interrupt controller, is made as an optional to
mt7622 pinctrl. But if we don't want pio behaves as an external interrupt
controller, it would lead to hw->eint not be created properly and then
will cause 'kernel NULL pointer' issue when gpiochip try to call .to_irq
or .set_config. To fix it, check hw->eint before accessing the member.
[ 1.339494] Unable to handle kernel NULL pointer dereference at virtual
address 00000010
[ 1.347857] Mem abort info:
[ 1.350742] ESR = 0x96000005
[ 1.353905] Exception class = DABT (current EL), IL = 32 bits
[ 1.360024] SET = 0, FnV = 0
[ 1.363185] EA = 0, S1PTW = 0
[ 1.366431] Data abort info:
[ 1.369405] ISV = 0, ISS = 0x00000005
[ 1.373363] CM = 0, WnR = 0
[ 1.376437] [0000000000000010] user address but active_mm is swapper
[ 1.383005] Internal error: Oops: 96000005 [#1] PREEMPT SMP
[ 1.388748] Modules linked in:
[ 1.391897] CPU: 0 PID: 1 Comm: swapper/0 Not tainted 4.16.0-rc1+ #344
[ 1.398625] Hardware name: MediaTek MT7622 RFB1 board (DT)
[ 1.404279] pstate: 80000005 (Nzcv daif -PAN -UAO)
[ 1.409221] pc : mtk_eint_find_irq+0x8/0x24
[ 1.413532] lr : mtk_gpio_to_irq+0x20/0x28
[ 1.417749] sp : ffffff800801baf0
[ 1.421161] x29: ffffff800801baf0 x28: ffffff8008792f40
[ 1.426637] x27: ffffff800886b000 x26: ffffff8008615620
[ 1.432113] x25: ffffffc00e4dbdc8 x24: ffffff80087b8000
[ 1.437589] x23: ffffffc00325a000 x22: ffffffc00325a010
[ 1.443066] x21: ffffffc0033dec18 x20: 00000000ffffffea
[ 1.448542] x19: ffffffc00e4db800 x18: 0000000000000130
[ 1.454018] x17: 000000000000000e x16: 0000000000000007
[ 1.459494] x15: ffffff80085ee000 x14: 0000000000000001
[ 1.464970] x13: 0000000000000001 x12: 0000000000000010
[ 1.470446] x11: 0101010101010101 x10: 0000000000000880
[ 1.475922] x9 : ffffff800801b990 x8 : ffffffc0030688e0
[ 1.481399] x7 : ffffff80080c0660 x6 : ffffffc00e4dbbb0
[ 1.486875] x5 : 0000000000000000 x4 : 0000000000000000
[ 1.492351] x3 : ffffff80082a92f4 x2 : 00000000fffffffa
[ 1.497826] x1 : 0000000000000051 x0 : 0000000000000000
[ 1.503305] Process swapper/0 (pid: 1, stack limit = 0x0000000054e053bd)
[ 1.510210] Call trace:
[ 1.512727] mtk_eint_find_irq+0x8/0x24
[ 1.516677] mtk_gpio_to_irq+0x20/0x28
[ 1.520539] gpiod_to_irq+0x48/0x60
[ 1.524135] mmc_gpiod_request_cd_irq+0x3c/0xc4
[ 1.528804] mmc_start_host+0x6c/0x8c
[ 1.532575] mmc_add_host+0x58/0x7c
[ 1.536168] msdc_drv_probe+0x4fc/0x67c
[ 1.540121] platform_drv_probe+0x58/0xa4
[ 1.544251] driver_probe_device+0x204/0x44c
[ 1.548649] __driver_attach+0x84/0xf8
[ 1.552512] bus_for_each_dev+0x68/0xa0
[ 1.556461] driver_attach+0x20/0x28
[ 1.560142] bus_add_driver+0xec/0x240
[ 1.564002] driver_register+0x98/0xe4
[ 1.567863] __platform_driver_register+0x48/0x50
[ 1.572711] mt_msdc_driver_init+0x18/0x20
[ 1.576932] do_one_initcall+0x98/0x130
[ 1.580886] kernel_init_freeable+0x13c/0x1d4
[ 1.585375] kernel_init+0x10/0xf8
[ 1.588879] ret_from_fork+0x10/0x18
[ 1.592564] Code: a8c67bfd d65f03c0 a9bf7bfd 910003fd (f9400800)
[ 1.598849] ---[ end trace 4bbcb7bc30e98492 ]---
[ 1.603677] Kernel panic - not syncing: Attempted to kill init!
exitcode=0x0000000b
[ 1.603677]
cc: Kevin Hilman <khilman@baylibre.com>
Cc: stable@vger.kernel.org
Fixes: e6dabd38d8e7 ("pinctrl: mediatek: add EINT support to MT7622 SoC")
Signed-off-by: Sean Wang <sean.wang@mediatek.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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With gcc 4.1.2:
drivers/pinctrl/actions/pinctrl-owl.c: In function ‘owl_pin_config_set’:
drivers/pinctrl/actions/pinctrl-owl.c:336: warning: ‘ret’ may be used uninitialized in this function
Indeed, if num_configs is zero, the uninitialized value will be returned
as an error code.
Fix this by preinitializing it to zero.
Fixes: 2242ddfbf4d699b5 ("pinctrl: actions: Add Actions S900 pinctrl driver")
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Acked-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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Currently saved_vals is being allocated and there is no check for
failed allocation (which is more likely than normal when using
GFP_ATOMIC). Fix this by checking for a failed allocation and
propagating this error return down the the caller chain.
Detected by CoverityScan, CID#1469841 ("Dereference null return value")
Fixes: 88a1dbdec682 ("pinctrl: pinctrl-single: Add functions to save and restore pinctrl context")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Reviewed-by: Johan Hovold <johan@kernel.org>
Acked-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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Commit b89405b6102f ("pinctrl: devicetree: Fix dt_to_map_one_config
handling of hogs") causes the pinctrl hog pins to not get initialized
on i.MX platforms leaving them with the IOMUX settings untouched.
This causes several regressions on i.MX such as:
- OV5640 camera driver can not be probed anymore on imx6qdl-sabresd
because the camera clock pin is in a pinctrl_hog group and since
its pinctrl initialization is skipped, the camera clock is kept
in GPIO functionality instead of CLK_CKO function.
- Audio stopped working on imx6qdl-wandboard and imx53-qsb for
the same reason.
Richard Fitzgerald explains the problem:
"I see the bug. If the hog node isn't a 1st level child of the pinctrl
parent node it will go around the for(;;) loop again but on the first
pass I overwrite pctldev with the result of
get_pinctrl_dev_from_of_node() so it doesn't point to the pinctrl driver
any more."
Fix the issue by stashing the original pctldev so it doesn't
get overwritten.
Fixes: b89405b6102f ("pinctrl: devicetree: Fix dt_to_map_one_config handling of hogs")
Cc: <stable@vger.kernel.org>
Reported-by: Mika Penttilä <mika.penttila@nextfour.com>
Reported-by: Steve Longerbeam <slongerbeam@gmail.com>
Suggested-by: Richard Fitzgerald <rf@opensource.cirrus.com>
Signed-off-by: Fabio Estevam <fabio.estevam@nxp.com>
Reviewed-by: Dong Aisheng <aisheng.dong@nxp.com>
Reviewed-by: Richard Fitzgerald <rf@opensource.cirrus.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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platform_get_resource()
Remove unneeded error handling on the result of a call
to platform_get_resource() when the value is passed to
devm_ioremap_resource().
Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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Pull cifs fixes from Steve French:
"Misc SMB3 fixes, including particularly important ones for signing,
some minor documentation and debug improvements and another posix
smb3.11 fix"
* tag '4.18-rc1-more-smb3-fixes' of git://git.samba.org/sfrench/cifs-2.6:
cifs: Fix invalid check in __cifs_calc_signature()
cifs: Use correct packet length in SMB2_TRANSFORM header
smb3: fix corrupt path in subdirs on smb311 with posix
smb3: do not display empty interface list
smb3: Fix mode on mkdir on smb311 mounts
cifs: Fix kernel oops when traceSMB is enabled
CIFS: dump every session iface info
CIFS: parse and store info on iface queries
CIFS: add iface info to struct cifs_ses
CIFS: complete PDU definitions for interface queries
CIFS: move default port definitions to cifsglob.h
cifs: Fix encryption/signing
cifs: update __smb_send_rqst() to take an array of requests
cifs: remove smb2_send_recv()
cifs: push rfc1002 generation down the stack
smb3: increase initial number of credits requested to allow write
cifs: minor documentation updates
cifs: add lease tracking to the cached root fid
smb3: note that smb3.11 posix extensions mount option is experimental
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git://git.kernel.org/pub/scm/linux/kernel/git/jdelvare/staging
Pull dmi update from Jean Delvare:
"Expose SKU ID string as a DMI attribute"
* 'dmi-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jdelvare/staging:
firmware: dmi: Add access to the SKU ID string
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This fixes this documentation build error that is due to a file rename:
Error: Cannot open file ../arch/x86/kernel/cpu/mtrr/main.c
Fixes: 0afe832e55a7 ("Merge branch 'x86-cleanups-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip")
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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This is used in some systems from user space for determining the identity
of the device.
Expose this as a file so that that user-space tools don't need to read
from /sys/firmware/dmi/tables/DMI
Signed-off-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Jean Delvare <jdelvare@suse.de>
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The statement always evaluates to true since the struct fields
are arrays. This has shown up as a warning when compiling with
clang:
warning: address of array 'desc->layout.xstride' will always
evaluate to 'true' [-Wpointer-bool-conversion]
Check for values in the first plane instead.
Fixes: 1a396789f65a ("drm: add Atmel HLCDC Display Controller support")
Cc: <stable@vger.kernel.org>
Signed-off-by: Stefan Agner <stefan@agner.ch>
Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180617084826.31885-1-stefan@agner.ch
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When blackhole is used on top of classful qdisc like hfsc it breaks
qlen and backlog counters because packets are disappear without notice.
In HFSC non-zero qlen while all classes are inactive triggers warning:
WARNING: ... at net/sched/sch_hfsc.c:1393 hfsc_dequeue+0xba4/0xe90 [sch_hfsc]
and schedules watchdog work endlessly.
This patch return __NET_XMIT_BYPASS in addition to NET_XMIT_SUCCESS,
this flag tells upper layer: this packet is gone and isn't queued.
Signed-off-by: Konstantin Khlebnikov <khlebnikov@yandex-team.ru>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Commit cc66b3038254 ("hwmon: (nct6775) Rework temperature source and label
handling") changed a loop limit from "data->temp_label_num - 1" to "32",
as part of moving from a string array to a bit mask. This results in the
following error, reported by UBSAN.
UBSAN: Undefined behaviour in drivers/hwmon/nct6775.c:4179:27
shift exponent 32 is too large for 32-bit type 'long unsigned int'
Similar to the original loop, the limit has to be one less than the
number of bits.
Fixes: cc66b3038254 ("hwmon: (nct6775) Rework temperature source and label handling")
Reported-by: Paul Menzel <pmenzel+linux-hwmon@molgen.mpg.de>
Cc: Paul Menzel <pmenzel+linux-hwmon@molgen.mpg.de>
Tested-by: Paul Menzel <pmenzel+linux-hwmon@molgen.mpg.de>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
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Calling fan related SMM functions implemented by Dell BIOS firmware on Dell
XPS13 9333 freeze kernel for about 500ms. Until Dell fixes it we need to
disable fan support for Dell XPS13 9333.
Via "force" module param fan support can be enabled.
Link: https://bugzilla.kernel.org/show_bug.cgi?id=195751
Signed-off-by: Helge Eichelberg <kernelorg@elchenberg.name>
Reviewed-by: Pali Rohár <pali.rohar@gmail.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
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This breaks the build as this header is not meant to be used in this
way.
./include/linux/unaligned/access_ok.h:8:28: error: redefinition of ‘get_unaligned_le16’
static __always_inline u16 get_unaligned_le16(const void *p)
^~~~~~~~~~~~~~~~~~
In file included from drivers/bluetooth/hci_nokia.c:32:
./include/linux/unaligned/le_struct.h:7:19: note: previous definition of ‘get_unaligned_le16’ was here
static inline u16 get_unaligned_le16(const void *p)
Use asm/unaligned.h instead.
Signed-off-by: David S. Miller <davem@davemloft.net>
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ATM accounts for in-flight TX packets in sk_wmem_alloc of the VCC on
which they are to be sent. But it doesn't take ownership of those
packets from the sock (if any) which originally owned them. They should
remain owned by their actual sender until they've left the box.
There's a hack in pskb_expand_head() to avoid adjusting skb->truesize
for certain skbs, precisely to avoid messing up sk_wmem_alloc
accounting. Ideally that hack would cover the ATM use case too, but it
doesn't — skbs which aren't owned by any sock, for example PPP control
frames, still get their truesize adjusted when the low-level ATM driver
adds headroom.
This has always been an issue, it seems. The truesize of a packet
increases, and sk_wmem_alloc on the VCC goes negative. But this wasn't
for normal traffic, only for control frames. So I think we just got away
with it, and we probably needed to send 2GiB of LCP echo frames before
the misaccounting would ever have caused a problem and caused
atm_may_send() to start refusing packets.
Commit 14afee4b609 ("net: convert sock.sk_wmem_alloc from atomic_t to
refcount_t") did exactly what it was intended to do, and turned this
mostly-theoretical problem into a real one, causing PPPoATM to fail
immediately as sk_wmem_alloc underflows and atm_may_send() *immediately*
starts refusing to allow new packets.
The least intrusive solution to this problem is to stash the value of
skb->truesize that was accounted to the VCC, in a new member of the
ATM_SKB(skb) structure. Then in atm_pop_raw() subtract precisely that
value instead of the then-current value of skb->truesize.
Fixes: 158f323b9868 ("net: adjust skb->truesize in pskb_expand_head()")
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
Tested-by: Kevin Darbyshire-Bryant <ldir@darbyshire-bryant.me.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Daniel Borkmann says:
====================
pull-request: bpf 2018-06-16
The following pull-request contains BPF updates for your *net* tree.
The main changes are:
1) Fix a panic in devmap handling in generic XDP where return type
of __devmap_lookup_elem() got changed recently but generic XDP
code missed the related update, from Toshiaki.
2) Fix a freeze when BPF progs are loaded that include BPF to BPF
calls when JIT is enabled where we would later bail out via error
path w/o dropping kallsyms, and another one to silence syzkaller
splats from locking prog read-only, from Daniel.
3) Fix a bug in test_offloads.py BPF selftest which must not assume
that the underlying system have no BPF progs loaded prior to test,
and one in bpftool to fix accuracy of program load time, from Jakub.
4) Fix a bug in bpftool's probe for availability of the bpf(2)
BPF_TASK_FD_QUERY subcommand, from Yonghong.
5) Fix a regression in AF_XDP's XDP_SKB receive path where queue
id check got erroneously removed, from Björn.
6) Fix missing state cleanup in BPF's xfrm tunnel test, from William.
7) Check tunnel type more accurately in BPF's tunnel collect metadata
kselftest, from Jian.
8) Fix missing Kconfig fragments for BPF kselftests, from Anders.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
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Pull block fixes from Jens Axboe:
"A collection of fixes that should go into -rc1. This contains:
- bsg_open vs bsg_unregister race fix (Anatoliy)
- NVMe pull request from Christoph, with fixes for regressions in
this window, FC connect/reconnect path code unification, and a
trace point addition.
- timeout fix (Christoph)
- remove a few unused functions (Christoph)
- blk-mq tag_set reinit fix (Roman)"
* tag 'for-linus-20180616' of git://git.kernel.dk/linux-block:
bsg: fix race of bsg_open and bsg_unregister
block: remov blk_queue_invalidate_tags
nvme-fabrics: fix and refine state checks in __nvmf_check_ready
nvme-fabrics: handle the admin-only case properly in nvmf_check_ready
nvme-fabrics: refactor queue ready check
blk-mq: remove blk_mq_tagset_iter
nvme: remove nvme_reinit_tagset
nvme-fc: fix nulling of queue data on reconnect
nvme-fc: remove reinit_request routine
blk-mq: don't time out requests again that are in the timeout handler
nvme-fc: change controllers first connect to use reconnect path
nvme: don't rely on the changed namespace list log
nvmet: free smart-log buffer after use
nvme-rdma: fix error flow during mapping request data
nvme: add bio remapping tracepoint
nvme: fix NULL pointer dereference in nvme_init_subsystem
blk-mq: reinit q->tag_set_list entry only after grace period
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Pull documentation fixes from Mauro Carvalho Chehab:
"This solves a series of broken links for files under Documentation,
and improves a script meant to detect such broken links (see
scripts/documentation-file-ref-check).
The changes on this series are:
- can.rst: fix a footnote reference;
- crypto_engine.rst: Fix two parsing warnings;
- Fix a lot of broken references to Documentation/*;
- improve the scripts/documentation-file-ref-check script, in order
to help detecting/fixing broken references, preventing
false-positives.
After this patch series, only 33 broken references to doc files are
detected by scripts/documentation-file-ref-check"
* tag 'docs-broken-links' of git://linuxtv.org/mchehab/experimental: (26 commits)
fix a series of Documentation/ broken file name references
Documentation: rstFlatTable.py: fix a broken reference
ABI: sysfs-devices-system-cpu: remove a broken reference
devicetree: fix a series of wrong file references
devicetree: fix name of pinctrl-bindings.txt
devicetree: fix some bindings file names
MAINTAINERS: fix location of DT npcm files
MAINTAINERS: fix location of some display DT bindings
kernel-parameters.txt: fix pointers to sound parameters
bindings: nvmem/zii: Fix location of nvmem.txt
docs: Fix more broken references
scripts/documentation-file-ref-check: check tools/*/Documentation
scripts/documentation-file-ref-check: get rid of false-positives
scripts/documentation-file-ref-check: hint: dash or underline
scripts/documentation-file-ref-check: add a fix logic for DT
scripts/documentation-file-ref-check: accept more wildcards at filenames
scripts/documentation-file-ref-check: fix help message
media: max2175: fix location of driver's companion documentation
media: v4l: fix broken video4linux docs locations
media: dvb: point to the location of the old README.dvb-usb file
...
|
