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Adding myself as the ibmveth maintainer and replacing
Santiago Leon.
Signed-off-by: Thomas Falcon <tlfalcon@linux.vnet.ibm.com>
Cc: Santiago Leon <santi_leon@yahoo.com>
Cc: Brian King <brking@linux.vnet.ibm.com>
Cc: Nathan Fontenot <nfont@linux.vnet.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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In commit 58dc55f25631178ee74cd27185956a8f7dcb3e32 ("tipc: use generic
SKB list APIs to manage link transmission queue") we replace all list
traversal loops with the macros skb_queue_walk() or
skb_queue_walk_safe(). While the previous loops were based on the
assumption that the list was NULL-terminated, the standard macros
stop when the iterator reaches the list head, which is non-NULL.
In the function bclink_retransmit_pkt() this macro replacement has
lead to a bug. When we receive a BCAST STATE_MSG we unconditionally
call the function bclink_retransmit_pkt(), whether there really is
anything to retransmit or not, assuming that the sequence number
comparisons will lead to the correct behavior. However, if the
transmission queue is empty, or if there are no eligible buffers in
the transmission queue, we will by mistake pass the list head pointer
to the function tipc_link_retransmit(). Since the list head is not a
valid sk_buff, this leads to a crash.
In this commit we fix this by only calling tipc_link_retransmit()
if we actually found eligible buffers in the transmission queue.
Reviewed-by: Ying Xue <ying.xue@windriver.com>
Signed-off-by: Jon Maloy <jon.maloy@ericsson.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Update documentation to reflect the fact that
/proc/sys/net/ipv4/route/max_size is no longer used for ipv4.
Signed-off-by: Ani Sinha <ani@arista.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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The clock is enabled without being prepared, this leads to:
WARNING: CPU: 0 PID: 1 at drivers/clk/clk.c:889 __clk_enable+0x24/0xa8()
and a non working ethernet interface.
Use clk_prepare_enable() and clk_disable_unprepare() to handle the clock.
Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Acked-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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In C one can either use '\0' or '\x00' (or '\000') to add a NUL byte to
a string. '\0x00' isn't part of these and will in fact result in a
single NUL followed by "x00". This fixes that.
Signed-off-by: Giel van Schijndel <me@mortis.eu>
Reported-at: http://www.viva64.com/en/b/0299/
Signed-off-by: David S. Miller <davem@davemloft.net>
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git://git.kernel.org/pub/scm/linux/kernel/git/kvalo/wireless-drivers
* rtlwifi: fix a regression in large skb allocation failure
iwlwifi:
* fix for 7265D NVM check
* fixes for scan: fix long scanning times and network discovery
* new firmware API for iwlmvm supported devices
* fixes in rate control
Signed-off-by: David S. Miller <davem@davemloft.net>
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https://git.kernel.org/pub/scm/linux/kernel/git/iwlwifi/iwlwifi-fixes
* fix for 7265D NVM check
* fixes for scan: fix long scanning times and network
discovery
* new firmware API for iwlmvm supported devices
* fixes in rate control
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This allows 3160 / 7260 / 7265 / 7265D / 8000 devices to
use the latest version of the firmware.
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
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Use only basic dwell time (10 ms for active scan and 110 for passive),
regardless of the number of the probes and the band, if it is
supported by the FW. The FW will add 3 ms for each probe sent and 10
ms for low band channels.
Add a TLV flag to indicate such support in FW.
This fix is needed to fix few bugs regarding scans that take too much time.
Signed-off-by: David Spinadel <david.spinadel@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
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Add a flag that enables match found notification to align with
FW API change.
Cc: <stable@vger.kernel.org> [3.17+]
Signed-off-by: David Spinadel <david.spinadel@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
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When tid_tspec was set to IWL_TID_NON_QOS (8) this led to an
out of bounds access to the tid_to_mac80211_ac array whose size
is 7. Fix this.
Signed-off-by: Eyal Shapira <eyalx.shapira@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
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commit 5c90422439d6
"iwlwifi: mvm: don't allow diversity if BT Coex / TT forbid it"
broke Rx with 2 chains for diversity.
This had an impact on throughput where we're using only a single
stream (11a/b/g APs, single stream APs, static SMPS).
Fixes: 5c90422439d6 ("iwlwifi: mvm: don't allow diversity if BT Coex / TT forbid it")
Cc: Stable <stable@vger.kernel.org> [3.16+]
Signed-off-by: Eyal Shapira <eyalx.shapira@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
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We were advertising iwlwifi-7265-X.ucode instead of
iwlwifi-7265D-X.ucode. Fix this.
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
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The trans cfg was not replaced for 7265-D cards. This led to a check of
the min-NVM version against a 7265-C card, causing very-old 7265-D cards
to operate incorrectly with the driver.
Fixes: 3fd0d3c170ad ("iwlwifi: pcie: support 7265-D devices")
Signed-off-by: Arik Nemtsov <arikx.nemtsov@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
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These drivers use 9100-byte receive buffers, thus allocating an skb requires
an O(3) memory allocation. Under heavy memory loads and fragmentation, such
a request can fail. Previous versions of the driver have dropped the packet
and reused the old buffer; however, the new version introduced a bug in that
it released the old buffer before trying to allocate a new one. The previous
method is implemented here. The skb is unmapped before any attempt is made to
allocate another.
Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Cc: Stable <stable@vger.kernel.org> [v3.18]
Reported-by: Eric Biggers <ebiggers3@gmail.com>
Cc: Eric Biggers <ebiggers3@gmail.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
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Pablo Neira Ayuso says:
====================
netfilter/ipvs fixes for net
The following patchset contains netfilter/ipvs fixes, they are:
1) Small fix for the FTP helper in IPVS, a diff variable may be left
unset when CONFIG_IP_VS_IPV6 is set. Patch from Dan Carpenter.
2) Fix nf_tables port NAT in little endian archs, patch from leroy
christophe.
3) Fix race condition between conntrack confirmation and flush from
userspace. This is the second reincarnation to resolve this problem.
4) Make sure inner messages in the batch come with the nfnetlink header.
5) Relax strict check from nfnetlink_bind() that may break old userspace
applications using all 1s group mask.
6) Schedule removal of chains once no sets and rules refer to them in
the new nf_tables ruleset flush command. Reported by Asbjoern Sloth
Toennesen.
Note that this batch comes later than usual because of the short
winter holidays.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
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Jumping between chains doesn't mix well with flush ruleset. Rules
from a different chain and set elements may still refer to us.
[ 353.373791] ------------[ cut here ]------------
[ 353.373845] kernel BUG at net/netfilter/nf_tables_api.c:1159!
[ 353.373896] invalid opcode: 0000 [#1] SMP
[ 353.373942] Modules linked in: intel_powerclamp uas iwldvm iwlwifi
[ 353.374017] CPU: 0 PID: 6445 Comm: 31c3.nft Not tainted 3.18.0 #98
[ 353.374069] Hardware name: LENOVO 5129CTO/5129CTO, BIOS 6QET47WW (1.17 ) 07/14/2010
[...]
[ 353.375018] Call Trace:
[ 353.375046] [<ffffffff81964c31>] ? nf_tables_commit+0x381/0x540
[ 353.375101] [<ffffffff81949118>] nfnetlink_rcv+0x3d8/0x4b0
[ 353.375150] [<ffffffff81943fc5>] netlink_unicast+0x105/0x1a0
[ 353.375200] [<ffffffff8194438e>] netlink_sendmsg+0x32e/0x790
[ 353.375253] [<ffffffff818f398e>] sock_sendmsg+0x8e/0xc0
[ 353.375300] [<ffffffff818f36b9>] ? move_addr_to_kernel.part.20+0x19/0x70
[ 353.375357] [<ffffffff818f44f9>] ? move_addr_to_kernel+0x19/0x30
[ 353.375410] [<ffffffff819016d2>] ? verify_iovec+0x42/0xd0
[ 353.375459] [<ffffffff818f3e10>] ___sys_sendmsg+0x3f0/0x400
[ 353.375510] [<ffffffff810615fa>] ? native_sched_clock+0x2a/0x90
[ 353.375563] [<ffffffff81176697>] ? acct_account_cputime+0x17/0x20
[ 353.375616] [<ffffffff8110dc78>] ? account_user_time+0x88/0xa0
[ 353.375667] [<ffffffff818f4bbd>] __sys_sendmsg+0x3d/0x80
[ 353.375719] [<ffffffff81b184f4>] ? int_check_syscall_exit_work+0x34/0x3d
[ 353.375776] [<ffffffff818f4c0d>] SyS_sendmsg+0xd/0x20
[ 353.375823] [<ffffffff81b1826d>] system_call_fastpath+0x16/0x1b
Release objects in this order: rules -> sets -> chains -> tables, to
make sure no references to chains are held anymore.
Reported-by: Asbjoern Sloth Toennesen <asbjorn@asbjorn.biz>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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Relax the checking that was introduced in 97840cb ("netfilter:
nfnetlink: fix insufficient validation in nfnetlink_bind") when the
subscription bitmask is used. Existing userspace code code may request
to listen to all of the existing netlink groups by setting an all to one
subscription group bitmask. Netlink already validates subscription via
setsockopt() for us.
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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Make sure there is enough room for the nfnetlink header in the
netlink messages that are part of the batch. There is a similar
check in netlink_rcv_skb().
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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Commit 5195c14c8b27c ("netfilter: conntrack: fix race in
__nf_conntrack_confirm against get_next_corpse") aimed to resolve the
race condition between the confirmation (packet path) and the flush
command (from control plane). However, it introduced a crash when
several packets race to add a new conntrack, which seems easier to
reproduce when nf_queue is in place.
Fix this race, in __nf_conntrack_confirm(), by removing the CT
from unconfirmed list before checking the DYING bit. In case
race occured, re-add the CT to the dying list
This patch also changes the verdict from NF_ACCEPT to NF_DROP when
we lose race. Basically, the confirmation happens for the first packet
that we see in a flow. If you just invoked conntrack -F once (which
should be the common case), then this is likely to be the first packet
of the flow (unless you already called flush anytime soon in the past).
This should be hard to trigger, but better drop this packet, otherwise
we leave things in inconsistent state since the destination will likely
reply to this packet, but it will find no conntrack, unless the origin
retransmits.
The change of the verdict has been discussed in:
https://www.marc.info/?l=linux-netdev&m=141588039530056&w=2
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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Make sure this fetches 16-bits port data from the register.
Remove casting to make sparse happy, not needed anymore.
Signed-off-by: leroy christophe <christophe.leroy@c-s.fr>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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https://git.kernel.org/pub/scm/linux/kernel/git/horms/ipvs-next into ipvs-next
Simon Horman says:
====================
Second round of IPVS Updates for v3.19
please consider these IPVS updates for v3.19 or alternatively v3.20.
The single patch in this series fixes a long standing bug that
has not caused any trouble and thus is not being prioritised as a fix.
====================
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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The app_tcp_pkt_out() function expects "*diff" to be set and ends up
using uninitialized data if CONFIG_IP_VS_IPV6 is turned on.
The same issue is there in app_tcp_pkt_in(). Thanks to Julian Anastasov
for noticing that.
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-by: Julian Anastasov <ja@ssi.bg>
Signed-off-by: Simon Horman <horms@verge.net.au>
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Due to a misplaced parenthesis, the expression
(unlikely(offset) < 0),
which expands to
(__builtin_expect(!!(offset), 0) < 0),
never evaluates to true. Therefore, when sending packets with
PF_PACKET/SOCK_DGRAM, packet_snd() does not abort as intended
if the creation of the layer 2 header fails.
Spotted by Coverity - CID 1259975 ("Operands don't affect result").
Fixes: 9c7077622dd9 ("packet: make packet_snd fail on len smaller than l2 header")
Signed-off-by: Christoph Jaeger <cj@linux.com>
Acked-by: Eric Dumazet <edumazet@google.com>
Acked-by: Willem de Bruijn <willemb@google.com>
Acked-by: Daniel Borkmann <dborkman@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Commit d75b1ade567f ("net: less interrupt masking in NAPI") uncovered
wrong alx_poll() behavior.
A NAPI poll() handler is supposed to return exactly the budget when/if
napi_complete() has not been called.
It is also supposed to return number of frames that were received, so
that netdev_budget can have a meaning.
Also, in case of TX pressure, we still have to dequeue received
packets : alx_clean_rx_irq() has to be called even if
alx_clean_tx_irq(alx) returns false, otherwise device is half duplex.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Fixes: d75b1ade567f ("net: less interrupt masking in NAPI")
Reported-by: Oded Gabbay <oded.gabbay@amd.com>
Bisected-by: Oded Gabbay <oded.gabbay@amd.com>
Tested-by: Oded Gabbay <oded.gabbay@amd.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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A NAPI poll() handler is supposed to return exactly the budget when/if
napi_complete() has not been called.
It is also supposed to return number of frames that were received, so
that netdev_budget can have a meaning.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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This patch initialises the fep->netdev pointer. This pointer was not
initialised at all, but is used in fec_enet_timeout_work and in some
error paths.
Signed-off-by: Hubert Feurstein <h.feurstein@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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TRSCER register is configured differently by SoCs. TRSCER of R-Car Gen2 is
RINT8 bit only valid, other bits are reserved bits. This removes access to
TRSCER register reserve bit by adding variable trscer_err_mask to
sh_eth_cpu_data structure, set the register information to each SoCs.
Signed-off-by: Nobuhiro Iwamatsu <nobuhiro.iwamatsu.yj@renesas.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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FDR register of R-Car set in fdr_value can have the original settings.
This sets the value that is suitable for each SoCs to fdr_value of R8A777x
and R8A779x.
Signed-off-by: Nobuhiro Iwamatsu <nobuhiro.iwamatsu.yj@renesas.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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git://git.kernel.org/pub/scm/linux/kernel/git/jkirsher/net
Jeff Kirsher says:
====================
Intel Wired LAN Driver Updates 2015-01-06
This series contains fixes to i40e only.
Jesse provides a fix for when the driver was polling with interrupts
disabled the hardware would occasionally not write back descriptors.
His fix causes the driver to detect this situation and force an interrupt
to fire which will flush the stuck descriptor.
Anjali provides a couple of fixes, the first corrects an issue where
the receive port checksum error counter was incrementing incorrectly with
UDP encapsulated tunneled traffic. The second fix resolves an issue where
the driver was examining the outer protocol layer to set the inner protocol
layer checksum offload. In the case of TCP over IPv6 over an IPv4 based
VXLAN, the inner checksum offloads would be set to look for IPv4/UDP
instead of IPv6/TCP, so fixed the issue so that the driver will look at
the proper layer for encapsulation offload settings.
v2: fixed a bug in patch 01 of the series, where the interrupt rate impacted
4 port workloads by reducing throughput.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
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The driver was examining the outer protocol layer to set the inner protocol
layer checksum offload. In the case of TCP over IPV6 over an IPv4 based
VXLAN the inner checksum offloads would be set to look for IPv4/UDP instead
of IPv6/TCP. This code fixes that so that the driver will look at the
proper layer for encapsulation offload settings.
Signed-off-by: Anjali Singhai <anjali.singhai@intel.com>
Signed-off-by: Greg Rose <gregory.v.rose@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
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The Rx port checksum error counter was incrementing incorrectly with
UDP encapsulated tunneled traffic. This patch fixes the problem so that
the port_rx_csum counter will show accurate statistics.
Signed-off-by: Anjali Singhai <anjali.singhai@intel.com>
Signed-off-by: Greg Rose <gregory.v.rose@intel.com>
Tested-by: Jim Young <james.m.young@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
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When the driver was polling with interrupts disabled the hardware
will occasionally not write back descriptors. This patch causes
the driver to detect this situation and force an interrupt to
fire which will flush the stuck descriptor. Does not conflict
with napi because if we are already polling the napi_schedule is
ignored. Additionally the extra interrupts are rate limited, so
don't cause a burden to the CPU.
Change-ID: Iba4616d2a71288672a5f08e4512e2704b97335e8
Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
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Pull kvm fixes from Paolo Bonzini:
"Two bugfixes for arm64. I will have another pull request next week,
but otherwise things are calm"
* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
arm64: KVM: Fix HCR setting for 32bit guests
arm64: KVM: Fix TLB invalidation by IPA/VMID
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Commit b856a59141b1 (arm/arm64: KVM: Reset the HCR on each vcpu
when resetting the vcpu) moved the init of the HCR register to
happen later in the init of a vcpu, but left out the fixup
done in kvm_reset_vcpu when preparing for a 32bit guest.
As a result, the 32bit guest is run as a 64bit guest, but the
rest of the kernel still manages it as a 32bit. Fun follows.
Moving the fixup to vcpu_reset_hcr solves the problem for good.
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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It took about two years for someone to notice that the IPA passed
to TLBI IPAS2E1IS must be shifted by 12 bits. Clearly our reviewing
is not as good as it should be...
Paper bag time for me.
Reported-by: Mario Smarduch <m.smarduch@samsung.com>
Tested-by: Mario Smarduch <m.smarduch@samsung.com>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux
Pull s390 fixes from Martin Schwidefsky:
"Two small performance tweaks, the plumbing for the execveat system
call and a couple of bug fixes"
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux:
s390/uprobes: fix user space PER events
s390/bpf: Fix JMP_JGE_X (A > X) and JMP_JGT_X (A >= X)
s390/bpf: Fix ALU_NEG (A = -A)
s390/mm: avoid using pmd_to_page for !USE_SPLIT_PMD_PTLOCKS
s390/timex: fix get_tod_clock_ext() inline assembly
s390: wire up execveat syscall
s390/kernel: use stnsm 255 instead of stosm 0
s390/vtime: Get rid of redundant WARN_ON
s390/zcrypt: kernel oops at insmod of the z90crypt device driver
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If uprobes are single stepped for example with gdb, the behavior should
now be correct. Before this patch, when gdb was single stepping a uprobe,
the result was a SIGILL.
When PER is active for any storage alteration and a uprobe is hit, a storage
alteration event is indicated. These over indications are filterd out by gdb,
if no change has happened within the observed area.
Signed-off-by: Jan Willeke <willeke@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
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Currently the signed COMPARE (cr) instruction is used to compare "A"
with "X". This is not correct because "A" and "X" are both unsigned.
To fix this use the unsigned COMPARE LOGICAL (clr) instruction instead.
Signed-off-by: Michael Holzheu <holzheu@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
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Currently the LOAD NEGATIVE (lnr) instruction is used for ALU_NEG. This
instruction always loads the negative value. Therefore, if A is already
negative, it remains unchanged. To fix this use LOAD COMPLEMENT (lcr)
instead.
Signed-off-by: Michael Holzheu <holzheu@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
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pmd_to_page() is only available if USE_SPLIT_PMD_PTLOCKS is defined.
The use of pmd_to_page in the gmap code can cause compile errors if
NR_CPUS is smaller than SPLIT_PTLOCK_CPUS. Do not use pmd_to_page
outside of USE_SPLIT_PMD_PTLOCKS sections.
Reported-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
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For C language, it treats array parameter as a pointer, so sizeof for an
array parameter is equal to sizeof for a pointer, which causes compiler
warning (with allmodconfig by gcc 5):
./arch/s390/include/asm/timex.h: In function 'get_tod_clock_ext':
./arch/s390/include/asm/timex.h:76:32: warning: 'sizeof' on array function parameter 'clk' will return size of 'char *' [-Wsizeof-array-argument]
typedef struct { char _[sizeof(clk)]; } addrtype;
^
Can use macro CLOCK_STORE_SIZE instead of all related hard code numbers,
which also can avoid this warning. And also add a tab to CLOCK_TICK_RATE
definition to match coding styles.
[heiko.carstens@de.ibm.com]:
Chen's patch actually fixes a bug within the get_tod_clock_ext() inline assembly
where we incorrectly tell the compiler that only 8 bytes of memory get changed
instead of 16 bytes.
This would allow gcc to generate incorrect code. Right now this doesn't seem to
be the case.
Also slightly changed the patch a bit.
- renamed CLOCK_STORE_SIZE to STORE_CLOCK_EXT_SIZE
- changed get_tod_clock_ext() to receive a char pointer parameter
Signed-off-by: Chen Gang <gang.chen.5i5j@gmail.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
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Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
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On some models, stnsm 255 might be slightly faster than stosm 0.
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
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in the cpu time accounting function vtime_account_irq_enter
(vtime_account_system) we use a WARN_ON_ONCE(!irqs_disabled()).
This is redundant as the function virt_timer_forward is always
called and has a BUG_ON(!irqs_disabled()).
This saves several nanoseconds in my specific testcase (KVM entry/exit)
and probably all other callers like (soft)irq entry/exit.
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Reviewed-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
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Kernel oops caused by invalid parameter at TAPQ instruction:
On older systems where the QCI instruction is not available
all possible domains are probed via TAPQ instruction. The
range for the probe has been extended with the > 16 domain
support now leading to a possible specification exception
when this instruction is called for probing higher values
within the new range. This may happen during insmod and/or
ap bus reset only on machines without a QCI instruction (z10,
z196, z114), zEC12 and newer systems are not affected.
The fix modifies the domain checking function to limit the
allowed range if no QCI info is available.
Signed-off-by: Harald Freudenberger <freude@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
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Pull file locking fix from Jeff Layton:
"Just a simple bugfix for a regression that I introduced into v3.18
with the internal lease API overhaul -- mea culpa. Kudos to Linda and
Neil for tracking this down and fixing it"
* tag 'locks-v3.19-1' of git://git.samba.org/jlayton/linux:
locks: fix NULL-deref in generic_delete_lease
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commit 0efaa7e82f02fe69c05ad28e905f31fc86e6f08e
locks: generic_delete_lease doesn't need a file_lock at all
moves the call to fl->fl_lmops->lm_change() to a place in the
code where fl might be a non-lease lock.
When that happens, fl_lmops is NULL and an Oops ensures.
So add an extra test to restore correct functioning.
Reported-by: Linda Walsh <suse@tlinx.org>
Link: https://bugzilla.suse.com/show_bug.cgi?id=912569
Cc: stable@vger.kernel.org (v3.18)
Fixes: 0efaa7e82f02fe69c05ad28e905f31fc86e6f08e
Signed-off-by: NeilBrown <neilb@suse.de>
Signed-off-by: Jeff Layton <jlayton@primarydata.com>
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Pull block layer fixes from Jens Axboe:
"The major part is an update to the NVMe driver, fixing various issues
around surprise removal and hung controllers. Most of that is from
Keith, and parts are simple blk-mq fixes or exports/additions of minor
functions to aid this effort, and parts are changes directly to the
NVMe driver.
Apart from the above, this contains:
- Small blk-mq change from me, killing an unused member of the
hardware queue structure.
- Small fix from Ming Lei, fixing up a few drivers that didn't
properly check for ERR_PTR() returns from blk_mq_init_queue()"
* 'for-linus' of git://git.kernel.dk/linux-block:
NVMe: Fix locking on abort handling
NVMe: Start and stop h/w queues on reset
NVMe: Command abort handling fixes
NVMe: Admin queue removal handling
NVMe: Reference count admin queue usage
NVMe: Start all requests
blk-mq: End unstarted requests on a dying queue
blk-mq: Allow requests to never expire
blk-mq: Add helper to abort requeued requests
blk-mq: Let drivers cancel requeue_work
blk-mq: Export if requests were started
blk-mq: Wake tasks entering queue on dying
blk-mq: get rid of ->cmd_size in the hardware queue
block: fix checking return value of blk_mq_init_queue
block: wake up waiters when a queue is marked dying
NVMe: Fix double free irq
blk-mq: Export freeze/unfreeze functions
blk-mq: Exit queue on alloc failure
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The queues and device need to be locked when messing with them.
Signed-off-by: Keith Busch <keith.busch@intel.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
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