Thomas writes:
"- Provide a strerror_r wrapper so lib/bpf can be built on systems
without _GNU_SOURCE
- Unbreak the man page generator when building out of tree"
* 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
perf Documentation: Fix out-of-tree asciidoctor man page generation
tools lib bpf: Provide wrapper for strerror_r to build in !_GNU_SOURCE systems
Thomas writes:
"Make the EFI arm stub device tree loader default on to unbreak
existing EFI boot loaders which do not have DTB support."
* 'efi-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
efi/libstub/arm: default EFI_ARMSTUB_DTB_LOADER to y
So it should not fail with EPERM even though it is no longer implemented...
This is a fix for:
(userns)$ egrep ^Cap /proc/self/status
CapInh: 0000003fffffffff
CapPrm: 0000003fffffffff
CapEff: 0000003fffffffff
CapBnd: 0000003fffffffff
CapAmb: 0000003fffffffff
(userns)$ tcpdump -i usb_rndis0
tcpdump: WARNING: usb_rndis0: SIOCETHTOOL(ETHTOOL_GUFO) ioctl failed: Operation not permitted
Warning: Kernel filter failed: Bad file descriptor
tcpdump: can't remove kernel filter: Bad file descriptor
With this change it returns EOPNOTSUPP instead of EPERM.
See also https://github.com/the-tcpdump-group/libpcap/issues/689
Fixes: 08a00fea6d "net: Remove references to NETIF_F_UFO from ethtool."
Cc: David S. Miller <davem@davemloft.net>
Signed-off-by: Maciej Żenczykowski <maze@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
With address_space_operations missing for device dax, namely the
.set_page_dirty, we hit a kernel warning when running destructive
ndctl unit test: make TESTS=device-dax check
WARNING: CPU: 3 PID: 7380 at fs/buffer.c:581 __set_page_dirty+0xb1/0xc0
Setting address_space_operations to noop_set_page_dirty and
noop_invalidatepage for device dax to prevent fallback to
__set_page_dirty_buffers() and block_invalidatepage() respectively.
Fixes: 2232c6382a ("device-dax: Enable page_mapping()")
Acked-by: Jeff Moyer <jmoyer@redhat.com>
Reported-by: Vishal Verma <vishal.l.verma@intel.com>
Signed-off-by: Dave Jiang <dave.jiang@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Clang warns when two declarations' section attributes don't match.
net/rds/ib_stats.c:40:1: warning: section does not match previous
declaration [-Wsection]
DEFINE_PER_CPU_SHARED_ALIGNED(struct rds_ib_statistics, rds_ib_stats);
^
./include/linux/percpu-defs.h:142:2: note: expanded from macro
'DEFINE_PER_CPU_SHARED_ALIGNED'
DEFINE_PER_CPU_SECTION(type, name,
PER_CPU_SHARED_ALIGNED_SECTION) \
^
./include/linux/percpu-defs.h:93:9: note: expanded from macro
'DEFINE_PER_CPU_SECTION'
extern __PCPU_ATTRS(sec) __typeof__(type) name;
\
^
./include/linux/percpu-defs.h:49:26: note: expanded from macro
'__PCPU_ATTRS'
__percpu __attribute__((section(PER_CPU_BASE_SECTION sec)))
\
^
net/rds/ib.h:446:1: note: previous attribute is here
DECLARE_PER_CPU(struct rds_ib_statistics, rds_ib_stats);
^
./include/linux/percpu-defs.h:111:2: note: expanded from macro
'DECLARE_PER_CPU'
DECLARE_PER_CPU_SECTION(type, name, "")
^
./include/linux/percpu-defs.h:87:9: note: expanded from macro
'DECLARE_PER_CPU_SECTION'
extern __PCPU_ATTRS(sec) __typeof__(type) name
^
./include/linux/percpu-defs.h:49:26: note: expanded from macro
'__PCPU_ATTRS'
__percpu __attribute__((section(PER_CPU_BASE_SECTION sec)))
\
^
1 warning generated.
The initial definition was added in commit ec16227e14 ("RDS/IB:
Infiniband transport") and the cache aligned definition was added in
commit e6babe4cc4 ("RDS/IB: Stats and sysctls") right after. The
definition probably should have been updated in net/rds/ib.h, which is
what this patch does.
Link: https://github.com/ClangBuiltLinux/linux/issues/114
Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
Acked-by: Santosh Shilimkar <santosh.shilimkar@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Klaus Kusche reported that the I/O busy time in /proc/diskstats was not
updating properly on 4.18. This is because we started using ktime to
track elapsed time, and we convert nanoseconds to jiffies when we update
the partition counter. However, this gets rounded down, so any I/Os that
take less than a jiffy are not accounted for. Previously in this case,
the value of jiffies would sometimes increment while we were doing I/O,
so at least some I/Os were accounted for.
Let's convert the stats to use nanoseconds internally. We still report
milliseconds as before, now more accurately than ever. The value is
still truncated to 32 bits for backwards compatibility.
Fixes: 522a777566 ("block: consolidate struct request timestamp fields")
Cc: stable@vger.kernel.org
Reported-by: Klaus Kusche <klaus.kusche@computerix.info>
Signed-off-by: Omar Sandoval <osandov@fb.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Clang warns that the address of a pointer will always evaluated as true
in a boolean context:
drivers/net/ethernet/mellanox/mlx4/eq.c:243:11: warning: address of
array 'eq->affinity_mask' will always evaluate to 'true'
[-Wpointer-bool-conversion]
if (!eq->affinity_mask || cpumask_empty(eq->affinity_mask))
~~~~~^~~~~~~~~~~~~
1 warning generated.
Use cpumask_available, introduced in commit f7e30f01a9 ("cpumask: Add
helper cpumask_available()"), which does the proper checking and avoids
this warning.
Link: https://github.com/ClangBuiltLinux/linux/issues/86
Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Smatch reports that devlink_dpipe_send_and_alloc_skb() frees the skb
on error so this is a double free. We fixed a bunch of these bugs in
commit 7fe4d6dcbc ("devlink: Remove redundant free on error path") but
we accidentally overlooked this one.
Fixes: d9f9b9a4d0 ("devlink: Add support for resource abstraction")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
The method ndo_start_xmit() is defined as returning an 'netdev_tx_t',
which is a typedef for an enum type, so make sure the implementation in
this driver has returns 'netdev_tx_t' value, and change the function
return type to netdev_tx_t.
Found by coccinelle.
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
The method ndo_start_xmit() is defined as returning an 'netdev_tx_t',
which is a typedef for an enum type, so make sure the implementation in
this driver has returns 'netdev_tx_t' value, and change the function
return type to netdev_tx_t.
Found by coccinelle.
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
The method ndo_start_xmit() is defined as returning an 'netdev_tx_t',
which is a typedef for an enum type, so make sure the implementation in
this driver has returns 'netdev_tx_t' value, and change the function
return type to netdev_tx_t.
Found by coccinelle.
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
The method ndo_start_xmit() is defined as returning an 'netdev_tx_t',
which is a typedef for an enum type, so make sure the implementation in
this driver has returns 'netdev_tx_t' value, and change the function
return type to netdev_tx_t.
Found by coccinelle.
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
The method ndo_start_xmit() is defined as returning an 'netdev_tx_t',
which is a typedef for an enum type, so make sure the implementation in
this driver has returns 'netdev_tx_t' value, and change the function
return type to netdev_tx_t.
Found by coccinelle.
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
The method ndo_start_xmit() is defined as returning an 'netdev_tx_t',
which is a typedef for an enum type, so make sure the implementation in
this driver has returns 'netdev_tx_t' value, and change the function
return type to netdev_tx_t.
Found by coccinelle.
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
In case of error, the function pci_create_slot() returns ERR_PTR() and
never returns NULL. The NULL test in the return value check should be
replaced with IS_ERR().
Fixes: a15f2c08c7 ("PCI: hv: support reporting serial number as slot information")
Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
The backend handling for /proc/net/if_inet6 in addrconf.c doesn't properly
handle starting/stopping the iteration. The problem is that at some point
during the iteration, an overflow is detected and the process is
subsequently stopped. The item being shown via seq_printf() when the
overflow occurs is not actually shown, though. When start() is
subsequently called to resume iterating, it returns the next item, and
thus the item that was being processed when the overflow occurred never
gets printed.
Alter the meaning of the private data member "offset". Currently, when it
is not 0 (which only happens at the very beginning), "offset" represents
the next hlist item to be printed. After this change, "offset" always
represents the current item.
This is also consistent with the private data member "bucket", which
represents the current bucket, and also the use of "pos" as defined in
seq_file.txt:
The pos passed to start() will always be either zero, or the most
recent pos used in the previous session.
Signed-off-by: Jeff Barnhill <0xeffeff@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
netlbl_unlabel_addrinfo_get() assumes that if it finds the
NLBL_UNLABEL_A_IPV4ADDR attribute, it must also have the
NLBL_UNLABEL_A_IPV4MASK attribute as well. However, this is
not necessarily the case as the current checks in
netlbl_unlabel_staticadd() and friends are not sufficent to
enforce this.
If passed a netlink message with NLBL_UNLABEL_A_IPV4ADDR,
NLBL_UNLABEL_A_IPV6ADDR, and NLBL_UNLABEL_A_IPV6MASK attributes,
these functions will all call netlbl_unlabel_addrinfo_get() which
will then attempt dereference NULL when fetching the non-existent
NLBL_UNLABEL_A_IPV4MASK attribute:
Unable to handle kernel NULL pointer dereference at virtual address 0
Process unlab (pid: 31762, stack limit = 0xffffff80502d8000)
Call trace:
netlbl_unlabel_addrinfo_get+0x44/0xd8
netlbl_unlabel_staticremovedef+0x98/0xe0
genl_rcv_msg+0x354/0x388
netlink_rcv_skb+0xac/0x118
genl_rcv+0x34/0x48
netlink_unicast+0x158/0x1f0
netlink_sendmsg+0x32c/0x338
sock_sendmsg+0x44/0x60
___sys_sendmsg+0x1d0/0x2a8
__sys_sendmsg+0x64/0xb4
SyS_sendmsg+0x34/0x4c
el0_svc_naked+0x34/0x38
Code: 51001149 7100113f 540000a0 f9401508 (79400108)
---[ end trace f6438a488e737143 ]---
Kernel panic - not syncing: Fatal exception
Signed-off-by: Sean Tranchetti <stranche@codeaurora.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
John Fastabend says:
====================
Eric noted that using the close callback is not sufficient
to catch all transitions from ESTABLISHED state to a LISTEN
state. So this series does two things. First, only allow
adding socks in ESTABLISH state and second use unhash callback
to catch tcp_disconnect() transitions.
v2: added check for ESTABLISH state in hash update sockmap as well
v3: Do not release lock from unhash in error path, no lock was
used in the first place. And drop not so useful code comments
v4: convert,
if (unhash()) return unhash(); return
to if (unhash()) unhash(); return;
Thanks for reviewing Yonghong I carried your ACKs forward.
====================
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Ensure that sockets added to a sock{map|hash} that is not in the
ESTABLISHED state is rejected.
Fixes: 1aa12bdf1b ("bpf: sockmap, add sock close() hook to remove socks")
Signed-off-by: John Fastabend <john.fastabend@gmail.com>
Acked-by: Yonghong Song <yhs@fb.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
It is possible (via shutdown()) for TCP socks to go trough TCP_CLOSE
state via tcp_disconnect() without actually calling tcp_close which
would then call our bpf_tcp_close() callback. Because of this a user
could disconnect a socket then put it in a LISTEN state which would
break our assumptions about sockets always being ESTABLISHED state.
To resolve this rely on the unhash hook, which is called in the
disconnect case, to remove the sock from the sockmap.
Reported-by: Eric Dumazet <edumazet@google.com>
Fixes: 1aa12bdf1b ("bpf: sockmap, add sock close() hook to remove socks")
Signed-off-by: John Fastabend <john.fastabend@gmail.com>
Acked-by: Yonghong Song <yhs@fb.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
After this patch we only allow socks that are in ESTABLISHED state or
are being added via a sock_ops event that is transitioning into an
ESTABLISHED state. By allowing sock_ops events we allow users to
manage sockmaps directly from sock ops programs. The two supported
sock_ops ops are BPF_SOCK_OPS_PASSIVE_ESTABLISHED_CB and
BPF_SOCK_OPS_ACTIVE_ESTABLISHED_CB.
Similar to TLS ULP this ensures sk_user_data is correct.
Reported-by: Eric Dumazet <edumazet@google.com>
Fixes: 1aa12bdf1b ("bpf: sockmap, add sock close() hook to remove socks")
Signed-off-by: John Fastabend <john.fastabend@gmail.com>
Acked-by: Yonghong Song <yhs@fb.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
- Two fixes for the Intel pin controllers than cause
problems on laptops.
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Merge tag 'pinctrl-v4.19-3' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl
Linus writes:
"Pin control fixes for v4.19:
- Two fixes for the Intel pin controllers than cause
problems on laptops."
* tag 'pinctrl-v4.19-3' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl:
pinctrl: intel: Do pin translation in other GPIO operations as well
pinctrl: cannonlake: Fix gpio base for GPP-E
When sd_init_command() get's a command with a unknown req_op() it crashes the
system via BUG().
This makes debugging the actual reason for the broken request cmd_flags pretty
hard as the system is down before it's able to write out debugging data on the
serial console or the trace buffer.
Change the BUG() to a WARN_ON() and return BLKPREP_KILL to fail gracefully and
return an I/O error to the producer of the request.
Signed-off-by: Johannes Thumshirn <jthumshirn@suse.de>
Cc: Hannes Reinecke <hare@suse.de>
Cc: Bart Van Assche <bvanassche@acm.org>
Cc: Christoph Hellwig <hch@lst.de>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
While dlpar adding primary ipr adapter back, driver goes through adapter
initialization then schedule ipr_worker_thread to start te disk scan by
dropping the host lock, calling scsi_add_device. Then get the adapter reset
request again, so driver does scsi_block_requests, this will cause the
scsi_add_device get hung until we unblock. But we can't run ipr_worker_thread
to do the unblock because its stuck in scsi_add_device.
This patch fixes the issue.
[mkp: typo and whitespace fixes]
Signed-off-by: Wen Xiong <wenxiong@linux.vnet.ibm.com>
Acked-by: Brian King <brking@linux.vnet.ibm.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Vincent Pelletier <plr.vincent@gmail.com>
Reviewed-by: Mike Christie <mchristi@redhat.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
When extracting frames from the Ocelot switch, the frame check sequence
(FCS) is present at the end of the data extracted. The FCS was put into
the sk buffer which introduced some issues (as length related ones), as
the FCS shouldn't be part of an Rx sk buffer.
This patch fixes the Ocelot switch extraction behaviour by discarding
the FCS.
Fixes: a556c76adc ("net: mscc: Add initial Ocelot switch support")
Signed-off-by: Antoine Tenart <antoine.tenart@bootlin.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
I swear I would have sent it the same to Linus! The main cause for
this is that I was on vacation until two weeks ago and it took a while
to sort all the pending patches between 4.19 and 4.20, test them and
so on.
It's mostly small bugfixes and cleanups, mostly around x86 nested
virtualization. One important change, not related to nested
virtualization, is that the ability for the guest kernel to trap CPUID
instructions (in Linux that's the ARCH_SET_CPUID arch_prctl) is now
masked by default. This is because the feature is detected through an
MSR; a very bad idea that Intel seems to like more and more. Some
applications choke if the other fields of that MSR are not initialized
as on real hardware, hence we have to disable the whole MSR by default,
as was the case before Linux 4.12.
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Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm
Paolo writes:
"It's mostly small bugfixes and cleanups, mostly around x86 nested
virtualization. One important change, not related to nested
virtualization, is that the ability for the guest kernel to trap
CPUID instructions (in Linux that's the ARCH_SET_CPUID arch_prctl) is
now masked by default. This is because the feature is detected
through an MSR; a very bad idea that Intel seems to like more and
more. Some applications choke if the other fields of that MSR are
not initialized as on real hardware, hence we have to disable the
whole MSR by default, as was the case before Linux 4.12."
* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (23 commits)
KVM: nVMX: Fix bad cleanup on error of get/set nested state IOCTLs
kvm: selftests: Add platform_info_test
KVM: x86: Control guest reads of MSR_PLATFORM_INFO
KVM: x86: Turbo bits in MSR_PLATFORM_INFO
nVMX x86: Check VPID value on vmentry of L2 guests
nVMX x86: check posted-interrupt descriptor addresss on vmentry of L2
KVM: nVMX: Wake blocked vCPU in guest-mode if pending interrupt in virtual APICv
KVM: VMX: check nested state and CR4.VMXE against SMM
kvm: x86: make kvm_{load|put}_guest_fpu() static
x86/hyper-v: rename ipi_arg_{ex,non_ex} structures
KVM: VMX: use preemption timer to force immediate VMExit
KVM: VMX: modify preemption timer bit only when arming timer
KVM: VMX: immediately mark preemption timer expired only for zero value
KVM: SVM: Switch to bitmap_zalloc()
KVM/MMU: Fix comment in walk_shadow_page_lockless_end()
kvm: selftests: use -pthread instead of -lpthread
KVM: x86: don't reset root in kvm_mmu_setup()
kvm: mmu: Don't read PDPTEs when paging is not enabled
x86/kvm/lapic: always disable MMIO interface in x2APIC mode
KVM: s390: Make huge pages unavailable in ucontrol VMs
...
- A wrong UBIFS assertion in mount code
- Fix for a NULL pointer deref in mount code
- Revert of a bad fix for xattrs
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Merge tag 'upstream-4.19-rc4' of git://git.infradead.org/linux-ubifs
Richard writes:
"This pull request contains fixes for UBIFS:
- A wrong UBIFS assertion in mount code
- Fix for a NULL pointer deref in mount code
- Revert of a bad fix for xattrs"
* tag 'upstream-4.19-rc4' of git://git.infradead.org/linux-ubifs:
Revert "ubifs: xattr: Don't operate on deleted inodes"
ubifs: drop false positive assertion
ubifs: Check for name being NULL while mounting
When we want to writeback to memory in NV12 format we need to program
the RGB2YUV coefficients. Currently, we don't program the coefficients
and NV12 doesn't work at all.
This patchset fixes that by programming a sane default(bt709, limited
range) as rgb2yuv coefficients.
In the long run, probably we need to think of a way for userspace to
be able to program that, but for now I think this is better than not
working at all or not advertising NV12 as a supported format for
memwrite.
Changes since v1:
- Write the rgb2yuv coefficients only once, since we don't change
them at all, just write them the first time NV12 is programmed,
suggested by Brian Starkey, here [1]
[1] https://lists.freedesktop.org/archives/dri-devel/2018-August/186819.html
Signed-off-by: Alexandru Gheorghe <alexandru-cosmin.gheorghe@arm.com>
Acked-by: Liviu Dudau <liviu.dudau@arm.com>
Signed-off-by: Liviu Dudau <liviu.dudau@arm.com>
Currently, if userspace calls drm_wait_vblank before the crtc is
activated the crtc vblank_enable hook is called, which in case of
malidp driver triggers some warninngs. This happens because on
device init we don't inform the drm core about the vblank state
by calling drm_crtc_vblank_on/off/reset which together with
drm_vblank_get have some magic that prevents calling drm_vblank_enable
when crtc is off.
Signed-off-by: Alexandru Gheorghe <alexandru-cosmin.gheorghe@arm.com>
Acked-by: Liviu Dudau <liviu.dudau@arm.com>
Signed-off-by: Liviu Dudau <liviu.dudau@arm.com>
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Merge tag 'for-linus-20180920' of git://git.kernel.dk/linux-block
Jens writes:
"Storage fixes for 4.19-rc5
- Fix for leaking kernel pointer in floppy ioctl (Andy Whitcroft)
- NVMe pull request from Christoph, and a single ANA log page fix
(Hannes)
- Regression fix for libata qd32 support, where we trigger an illegal
active command transition. This fixes a CD-ROM detection issue that
was reported, but could also trigger premature completion of the
internal tag (me)"
* tag 'for-linus-20180920' of git://git.kernel.dk/linux-block:
floppy: Do not copy a kernel pointer to user memory in FDGETPRM ioctl
libata: mask swap internal and hardware tag
nvme: count all ANA groups for ANA Log page
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Merge tag 'drm-fixes-2018-09-21' of git://anongit.freedesktop.org/drm/drm
David writes:
"drm fixes for 4.19-rc5:
- core: fix debugfs for atomic, fix the check for atomic for
non-modesetting drivers
- amdgpu: adds a new PCI id, some kfd fixes and a sdma fix
- i915: a bunch of GVT fixes.
- vc4: scaling fix
- vmwgfx: modesetting fixes and a old buffer eviction fix
- udl: framebuffer destruction fix
- sun4i: disable on R40 fix until next kernel
- pl111: NULL termination on table fix"
* tag 'drm-fixes-2018-09-21' of git://anongit.freedesktop.org/drm/drm: (21 commits)
drm/amdkfd: Fix ATS capablity was not reported correctly on some APUs
drm/amdkfd: Change the control stack MTYPE from UC to NC on GFX9
drm/amdgpu: Fix SDMA HQD destroy error on gfx_v7
drm/vmwgfx: Fix buffer object eviction
drm/vmwgfx: Don't impose STDU limits on framebuffer size
drm/vmwgfx: limit mode size for all display unit to texture_max
drm/vmwgfx: limit screen size to stdu_max during check_modeset
drm/vmwgfx: don't check for old_crtc_state enable status
drm/amdgpu: add new polaris pci id
drm: sun4i: drop second PLL from A64 HDMI PHY
drm: fix drm_drv_uses_atomic_modeset on non modesetting drivers.
drm/i915/gvt: clear ggtt entries when destroy vgpu
drm/i915/gvt: request srcu_read_lock before checking if one gfn is valid
drm/i915/gvt: Add GEN9_CLKGATE_DIS_4 to default BXT mmio handler
drm/i915/gvt: Init PHY related registers for BXT
drm/atomic: Use drm_drv_uses_atomic_modeset() for debugfs creation
drm/fb-helper: Remove set but not used variable 'connector_funcs'
drm: udl: Destroy framebuffer only if it was initialized
drm/sun4i: Remove R40 display pipeline compatibles
drm/pl111: Make sure of_device_id tables are NULL terminated
...
It was reported that chip version 33 (RTL8168E) ends up with
10MBit/Half on a 1GBit link after resuming from S3 (with different
link partners). For whatever reason the PHY on this chip doesn't
properly start a renegotiation when soft-reset.
Explicitly requesting a renegotiation fixes this.
Fixes: a2965f12fd ("r8169: remove rtl8169_set_speed_xmii")
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Reported-by: Neil MacLeod <neil@nmacleod.com>
Tested-by: Neil MacLeod <neil@nmacleod.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
The driver currently uses the ndlp to get the local rport which is then used
to get the nvme transport remoteport pointer. There can be cases where a stale
remoteport pointer is obtained as synchronization isn't done through the
different dereferences.
Correct by using locks to synchronize the dereferences.
Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
blk-mq does not support runtime pm, so disable blk-mq support for now.
Fixes: d5038a13ec ("scsi: core: switch to scsi-mq by default")
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Acked-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
rvt_destroy_qp() cannot complete until all in process packets have
been released from the underlying hardware. If a link down event
occurs, an application can hang with a kernel stack similar to:
cat /proc/<app PID>/stack
quiesce_qp+0x178/0x250 [hfi1]
rvt_reset_qp+0x23d/0x400 [rdmavt]
rvt_destroy_qp+0x69/0x210 [rdmavt]
ib_destroy_qp+0xba/0x1c0 [ib_core]
nvme_rdma_destroy_queue_ib+0x46/0x80 [nvme_rdma]
nvme_rdma_free_queue+0x3c/0xd0 [nvme_rdma]
nvme_rdma_destroy_io_queues+0x88/0xd0 [nvme_rdma]
nvme_rdma_error_recovery_work+0x52/0xf0 [nvme_rdma]
process_one_work+0x17a/0x440
worker_thread+0x126/0x3c0
kthread+0xcf/0xe0
ret_from_fork+0x58/0x90
0xffffffffffffffff
quiesce_qp() waits until all outstanding packets have been freed.
This wait should be momentary. During a link down event, the cleanup
handling does not ensure that all packets caught by the link down are
flushed properly.
This is caused by the fact that the freeze path and the link down
event is handled the same. This is not correct. The freeze path
waits until the HFI is unfrozen and then restarts PIO. A link down
is not a freeze event. The link down path cannot restart the PIO
until link is restored. If the PIO path is restarted before the link
comes up, the application (QP) using the PIO path will hang (until
link is restored).
Fix by separating the linkdown path from the freeze path and use the
link down path for link down events.
Close a race condition sc_disable() by acquiring both the progress
and release locks.
Close a race condition in sc_stop() by moving the setting of the flag
bits under the alloc lock.
Cc: <stable@vger.kernel.org> # 4.9.x+
Fixes: 7724105686 ("IB/hfi1: add driver files")
Reviewed-by: Mike Marciniszyn <mike.marciniszyn@intel.com>
Signed-off-by: Michael J. Ruhl <michael.j.ruhl@intel.com>
Signed-off-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
If a packet stream uses an UnsupportedVL (virtual lane), the send
engine will not send the packet, and it will not indicate that an
error has occurred. This will cause the packet stream to block.
HFI has 8 virtual lanes available for packet streams. Each lane can
be enabled or disabled using the UnsupportedVL mask. If a lane is
disabled, adding a packet to the send context must be disallowed.
The current mask for determining unsupported VLs defaults to 0 (allow
all). This is incorrect. Only the VLs that are defined should be
allowed.
Determine which VLs are disabled (mtu == 0), and set the appropriate
unsupported bit in the mask. The correct mask will allow the send
engine to error on the invalid VL, and error recovery will work
correctly.
Cc: <stable@vger.kernel.org> # 4.9.x+
Fixes: 7724105686 ("IB/hfi1: add driver files")
Reviewed-by: Mike Marciniszyn <mike.marciniszyn@intel.com>
Reviewed-by: Lukasz Odzioba <lukasz.odzioba@intel.com>
Signed-off-by: Michael J. Ruhl <michael.j.ruhl@intel.com>
Signed-off-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
The SL specified by a user needs to be a valid SL.
Add a range check to the user specified SL value which protects from
running off the end of the SL to SC table.
CC: stable@vger.kernel.org
Fixes: 7724105686 ("IB/hfi1: add driver files")
Signed-off-by: Ira Weiny <ira.weiny@intel.com>
Signed-off-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Uverbs shouldn't enforce QP state in the command unless the user set the QP
state bit in the attribute mask.
In addition, only copy qp attr fields which have the corresponding bit set
in the attribute mask over to the internal attr structure.
Fixes: 88de869bbe ("RDMA/uverbs: Ensure validity of current QP state value")
Fixes: bc38a6abdd ("[PATCH] IB uverbs: core implementation")
Signed-off-by: Majd Dibbiny <majd@mellanox.com>
Signed-off-by: Jack Morgenstein <jackm@dev.mellanox.co.il>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
When programming the inbound/outbound ATUs, we call usleep_range() after
each checking PCIE_ATU_ENABLE bit. Unfortunately, the ATU programming
can be executed in atomic context:
inbound ATU programming could be called through
pci_epc_write_header()
=>dw_pcie_ep_write_header()
=>dw_pcie_prog_inbound_atu()
outbound ATU programming could be called through
pci_bus_read_config_dword()
=>dw_pcie_rd_conf()
=>dw_pcie_prog_outbound_atu()
Fix this issue by calling mdelay() instead.
Fixes: f8aed6ec62 ("PCI: dwc: designware: Add EP mode support")
Fixes: d8bbeb39fb ("PCI: designware: Wait for iATU enable")
Signed-off-by: Jisheng Zhang <Jisheng.Zhang@synaptics.com>
[lorenzo.pieralisi@arm.com: commit log update]
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Gustavo Pimentel <gustavo.pimentel@synopsys.com>
Commit 92f9ccca4c ("PCI: mobiveil: Add Mobiveil PCIe Host Bridge IP
driver DT bindings") managed to add a MAINTAINERS entry where it does
not really belong (ie in the middle of a totally unrelated series of
entries and in the wrong alphabetical order).
Fix it.
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Cc: Subrahmanya Lingappa <l.subrahmanya@mobiveil.co.in>
We met a kernel panic when enabling earlycon, which is due to the fixmap
address of earlycon is not statically setup.
Currently the static fixmap setup in head_64.S only covers 2M virtual
address space, while it actually could be in 4M space with different
kernel configurations, e.g. when VSYSCALL emulation is disabled.
So increase the static space to 4M for now by defining FIXMAP_PMD_NUM to 2,
and add a build time check to ensure that the fixmap is covered by the
initial static page tables.
Fixes: 1ad83c858c ("x86_64,vsyscall: Make vsyscall emulation configurable")
Suggested-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Feng Tang <feng.tang@intel.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Tested-by: kernel test robot <rong.a.chen@intel.com>
Reviewed-by: Juergen Gross <jgross@suse.com> (Xen parts)
Cc: H Peter Anvin <hpa@linux.intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Michal Hocko <mhocko@kernel.org>
Cc: Yinghai Lu <yinghai@kernel.org>
Cc: Dave Hansen <dave.hansen@intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Andy Lutomirsky <luto@kernel.org>
Cc: stable@vger.kernel.org
Link: https://lkml.kernel.org/r/20180920025828.23699-1-feng.tang@intel.com
9092c71bb7 ("mm: use sc->priority for slab shrink targets") changed the
way that the target slab pressure is calculated and made it
priority-based:
delta = freeable >> priority;
delta *= 4;
do_div(delta, shrinker->seeks);
The problem is that on a default priority (which is 12) no pressure is
applied at all, if the number of potentially reclaimable objects is less
than 4096 (1<<12).
This causes the last objects on slab caches of no longer used cgroups to
(almost) never get reclaimed. It's obviously a waste of memory.
It can be especially painful, if these stale objects are holding a
reference to a dying cgroup. Slab LRU lists are reparented on memcg
offlining, but corresponding objects are still holding a reference to the
dying cgroup. If we don't scan these objects, the dying cgroup can't go
away. Most likely, the parent cgroup hasn't any directly charged objects,
only remaining objects from dying children cgroups. So it can easily hold
a reference to hundreds of dying cgroups.
If there are no big spikes in memory pressure, and new memory cgroups are
created and destroyed periodically, this causes the number of dying
cgroups grow steadily, causing a slow-ish and hard-to-detect memory
"leak". It's not a real leak, as the memory can be eventually reclaimed,
but it could not happen in a real life at all. I've seen hosts with a
steadily climbing number of dying cgroups, which doesn't show any signs of
a decline in months, despite the host is loaded with a production
workload.
It is an obvious waste of memory, and to prevent it, let's apply a minimal
pressure even on small shrinker lists. E.g. if there are freeable
objects, let's scan at least min(freeable, scan_batch) objects.
This fix significantly improves a chance of a dying cgroup to be
reclaimed, and together with some previous patches stops the steady growth
of the dying cgroups number on some of our hosts.
Link: http://lkml.kernel.org/r/20180905230759.12236-1-guro@fb.com
Fixes: 9092c71bb7 ("mm: use sc->priority for slab shrink targets")
Signed-off-by: Roman Gushchin <guro@fb.com>
Acked-by: Rik van Riel <riel@surriel.com>
Cc: Josef Bacik <jbacik@fb.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Shakeel Butt <shakeelb@google.com>
Cc: Michal Hocko <mhocko@kernel.org>
Cc: Vladimir Davydov <vdavydov.dev@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Greg Kroah-Hartman
Maciej Żenczykowski
Dave Jiang
Nathan Chancellor
Omar Sandoval
Dan Carpenter
YueHaibing
Wei Yongjun
Jeff Barnhill
Sean Tranchetti
Daniel Borkmann
John Fastabend
Johannes Thumshirn
Wen Xiong
Vincent Pelletier
Antoine Tenart
Alexandru Gheorghe
Heiner Kallweit
James Smart
Adrian Hunter
Michael J. Ruhl
Ira Weiny
Dave Airlie
Majd Dibbiny
Jisheng Zhang
Lorenzo Pieralisi
Feng Tang
Junxiao Bi
Roman Gushchin
Joel Fernandes (Google)