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According to the firmware spec, FLOW_STEERING_IB_UC_QP_RANGE command is
supported only if dmfs_ipoib bit is set.
If it isn't set we want to ensure allocating NET_IF QPs fail. We do so
by filling out the allocation bitmap. By thus, the NET_IF QPs allocating
function won't find any free QP and will fail.
Fixes: c1c98501121e ('IB/mlx4: Add support for steerable IB UD QPs')
Signed-off-by: Eran Ben Elisha <eranbe@mellanox.com>
Signed-off-by: Daniel Jurgens <danielj@mellanox.com>
Reviewed-by: Mark Bloch <markb@mellanox.com>
Signed-off-by: Leon Romanovsky <leon@kernel.org>
Signed-off-by: Doug Ledford <dledford@redhat.com>
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Report the correct speed in the port attributes when using a 56Gbps
ethernet link. Without this change the field is incorrectly set to 10.
Fixes: a9c766bb75ee ('IB/mlx4: Fix info returned when querying IBoE ports')
Fixes: 2e96691c31ec ('IB: Use central enum for speed instead of hard-coded values')
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: Yishai Hadas <yishaih@mellanox.com>
Signed-off-by: Daniel Jurgens <danielj@mellanox.com>
Signed-off-by: Leon Romanovsky <leon@kernel.org>
Signed-off-by: Doug Ledford <dledford@redhat.com>
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Use INT_MAX since this is the max value the attribute can hold, though
hardware capability is unlimited.
Fixes: 225c7b1feef1 ('IB/mlx4: Add a driver Mellanox ConnectX InfiniBand adapters')
Signed-off-by: Maor Gottlieb <maorg@mellanox.com>
Signed-off-by: Daniel Jurgens <danielj@mellanox.com>
Reviewed-by: Mark Bloch <markb@mellanox.com>
Reviewed-by: Yuval Shaia <yuval.shaia@oracle.com>
Signed-off-by: Leon Romanovsky <leon@kernel.org>
Signed-off-by: Doug Ledford <dledford@redhat.com>
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If OpenSM runs over a ConnectX-3, and there are ConnectX-4 or Connect-IB
VFs active on the network, the OpenSM will receive QP1 packets containing
a GRH where the destination GID is the "Well-Known GID" -- which is not a
GID in the HCA Port's GID Table.
This GID must be tested-for separately -- and packets which contain
this destination GID should be routed to slave 0 (the PF).
Fixes: 37bfc7c1e83f ('IB/mlx4: SR-IOV multiplex and demultiplex MADs')
Signed-off-by: Jack Morgenstein <jackm@dev.mellanox.co.il>
Signed-off-by: Daniel Jurgens <danielj@mellanox.com>
Signed-off-by: Leon Romanovsky <leon@kernel.org>
Signed-off-by: Doug Ledford <dledford@redhat.com>
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When MAD arrives to the hypervisor, we need to identify which slave it
should be sent by destination GID. When L3 protocol is IPv4 the
GRH is replaced by an IPv4 header. This patch detects when IPv4 header
needs to be parsed instead of GRH.
Fixes: b6ffaeffaea4 ('mlx4: In RoCE allow guests to have multiple GIDS')
Signed-off-by: Moni Shoua <monis@mellanox.com>
Signed-off-by: Daniel Jurgens <danielj@mellanox.com>
Reviewed-by: Mark Bloch <markb@mellanox.com>
Signed-off-by: Leon Romanovsky <leon@kernel.org>
Signed-off-by: Doug Ledford <dledford@redhat.com>
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Set traffic class within sl_tclass_flowlabel when create iboe AH.
Without this the TOS value will be empty when running VLAN tagged
traffic, because the TOS value is taken from the traffic class in the
address handle attributes.
Fixes: 9106c4106974 ('IB/mlx4: Fix SL to 802.1Q priority-bits mapping for IBoE')
Signed-off-by: Maor Gottlieb <maorg@mellanox.com>
Signed-off-by: Daniel Jurgens <danielj@mellanox.com>
Reviewed-by: Mark Bloch <markb@mellanox.com>
Signed-off-by: Leon Romanovsky <leon@kernel.org>
Signed-off-by: Doug Ledford <dledford@redhat.com>
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Remove the warning print of "can't use of GFP_NOIO" to avoid prints in
each QP creation when devices aren't supporting IB_QP_CREATE_USE_GFP_NOIO.
This print become more annoying when the IPoIB interface is configured
to work in connected mode.
Fixes: 09b93088d750 ('IB: Add a QP creation flag to use GFP_NOIO allocations')
Signed-off-by: Kamal Heib <kamalh@mellanox.com>
Signed-off-by: Leon Romanovsky <leon@kernel.org>
Reviewed-by: Yuval Shaia <yuval.shaia@oracle.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
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The maximum page size in the mkey context is 2GB.
Until today, we didn't enforce this requirement in the code,
and therefore, if we got a page size larger than 2GB, we
have passed zeros in the log_page_shift instead of the actual value
and the registration failed.
This patch limits the driver to use compound pages of 2GB for mkeys.
Fixes: e126ba97dba9 ('mlx5: Add driver for Mellanox Connect-IB adapters')
Signed-off-by: Maor Gottlieb <maorg@mellanox.com>
Signed-off-by: Majd Dibbiny <majd@mellanox.com>
Signed-off-by: Leon Romanovsky <leon@kernel.org>
Signed-off-by: Doug Ledford <dledford@redhat.com>
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Add the 512 bytes limit of RDMA READ and the size of remote
address to the max SGE calculation.
Fixes: e126ba97dba9 ('mlx5: Add driver for Mellanox Connect-IB adapters')
Signed-off-by: Eli Cohen <eli@mellanox.com>
Signed-off-by: Maor Gottlieb <maorg@mellanox.com>
Signed-off-by: Leon Romanovsky <leon@kernel.org>
Signed-off-by: Doug Ledford <dledford@redhat.com>
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Wait before continuing unload till all pending mkey async creation requests
are done.
Fixes: e126ba97dba9 ('mlx5: Add driver for Mellanox Connect-IB adapters')
Signed-off-by: Eli Cohen <eli@mellanox.com>
Signed-off-by: Maor Gottlieb <maorg@mellanox.com>
Signed-off-by: Leon Romanovsky <leon@kernel.org>
Signed-off-by: Doug Ledford <dledford@redhat.com>
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We put INT_MAX since this is the max value that can be held.
Though there is no hardware limitation, this is practically
a large enough number so we can use it.
Fixes: e126ba97dba9 ('mlx5: Add driver for Mellanox Connect-IB adapters')
Signed-off-by: Maor Gottlieb <maorg@mellanox.com>
Reviewed-by: Mark Bloch <markb@mellanox.com>
Signed-off-by: Leon Romanovsky <leon@kernel.org>
Signed-off-by: Doug Ledford <dledford@redhat.com>
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Remove from the driver the limitation imposed by firmware check
to not allow change of atomic permissions for indirect UMRs.
In order to avoid failures on old firmware, we only ask for change
of atomic permissions if atomic operations are supported.
Fixes: 968e78dd9644 ('IB/mlx5: Enhance UMR support to allow partial page table update')
Signed-off-by: Eli Cohen <eli@mellanox.com>
Signed-off-by: Maor Gottlieb <maorg@mellanox.com>
Signed-off-by: Leon Romanovsky <leon@kernel.org>
Signed-off-by: Doug Ledford <dledford@redhat.com>
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Replace the pre-defined macro signifying inline umr instead
of the numerical constant.
Signed-off-by: Max Gurtovoy <maxg@mellanox.com>
Signed-off-by: Leon Romanovsky <leon@kernel.org>
Signed-off-by: Doug Ledford <dledford@redhat.com>
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When we create flow steering rule, we need to save the related QP in the
ib_flow struct. this QP is used in destroy flow.
Move the QP assignment from ib_uverbs_ex_create_flow into ib_create_flow,
this would allow both kernel and userspace consumers to use it.
This bug wasn't seen in the wild because there are no kernel consumers
currently in the kernel.
Fixes: 319a441d1361 ("IB/core: Add receive flow steering support")
Signed-off-by: Mark Bloch <markb@mellanox.com>
Signed-off-by: Maor Gottlieb <maorg@mellanox.com>
Signed-off-by: Leon Romanovsky <leon@kernel.org>
Signed-off-by: Doug Ledford <dledford@redhat.com>
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When creating a FWD rule using tc create also a HW counter
for this rule.
Signed-off-by: Mark Bloch <markb@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: Leon Romanovsky <leon@kernel.org>
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Currently the code supports only drop rules to possess counters,
add that ability also for fwd rules.
Signed-off-by: Mark Bloch <markb@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: Leon Romanovsky <leon@kernel.org>
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Currently when calling mlx5_add_flow_rule we accept
only one flow destination, this commit allows to pass
multiple destinations.
This change forces us to change the return structure to a more
flexible one. We introduce a flow handle (struct mlx5_flow_handle),
it holds internally the number for rules created and holds an array
where each cell points the to a flow rule.
From the consumers (of mlx5_add_flow_rule) point of view this
change is only cosmetic and requires only to change the type
of the returned value they store.
From the core point of view, we now need to use a loop when
allocating and deleting rules (e.g given to us a flow handler).
Signed-off-by: Mark Bloch <markb@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: Leon Romanovsky <leon@kernel.org>
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When adding a new rule, if we can match it with compare_match_value and
flow tag we might be able to insert the rule to the same fte.
In order to do that, there must be an overlap between the actions of the
fte and the new rule.
When updating the action of an existing fte, we must tell the firmware
we are doing so.
Signed-off-by: Mark Bloch <markb@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: Leon Romanovsky <leon@kernel.org>
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The way we compare between two dests will need to be used in other
places in the future, so we factor out the comparison logic
between two dests into a separate function.
Signed-off-by: Mark Bloch <markb@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: Leon Romanovsky <leon@kernel.org>
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An fte status becomes FS_FTE_STATUS_EXISTING only after it was
created in HW. We can use this in order to simplify the logic on
what firmware command to use. If the status isn't FS_FTE_STATUS_EXISTING
we need to create the fte, otherwise we need only to update it.
Signed-off-by: Mark Bloch <markb@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: Leon Romanovsky <leon@kernel.org>
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When adding a new rule to an fte, we need to hold the fte lock
until we add that rule to the fte and increase the fte ref count.
Fixes: 0c56b97503fd ("net/mlx5_core: Introduce flow steering API")
Signed-off-by: Mark Bloch <markb@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: Leon Romanovsky <leon@kernel.org>
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Implement the vf set rate ndo by modifying the TSAR vport rate limit.
Signed-off-by: Mohamad Haj Yahia <mohamad@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: Leon Romanovsky <leon@kernel.org>
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Add TSAR to the eswitch which will act as the vports rate limiter.
Create/Destroy TSAR on Enable/Dsiable SRIOV.
Attach/Detach vport to eswitch TSAR on Enable/Disable vport.
Signed-off-by: Mohamad Haj Yahia <mohamad@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: Leon Romanovsky <leon@kernel.org>
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TSAR (stands for Transmit Scheduling ARbiter) is a hardware component
that is responsible for selecting the next entity to serve on the
transmit path.
The arbitration defines the QoS policy between the agents connected to
the TSAR.
The TSAR is a consist two main features:
1) BW Allocation between agents:
The TSAR implements a defecit weighted round robin between the agents.
Each agent attached to the TSAR is assigned with a weight and it is
awarded transmission tokens according to this weight.
2) Rate limer per agent:
Each agent attached to the TSAR is (optionally) assigned with a rate
limit.
TSAR will not allow scheduling for an agent exceeding its defined rate
limit.
In this patch we implement the API of manipulating the TSAR.
Signed-off-by: Mohamad Haj Yahia <mohamad@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: Leon Romanovsky <leon@kernel.org>
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For the mlx5 driver to support ConnectX-5 PCIe 4.0 VFs, we add the
device ID "0x101a" to mlx5_core_pci_table.
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: Leon Romanovsky <leon@kernel.org>
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According to PRM async_event_mask have to be 64 bits long.
Signed-off-by: Eugenia Emantayev <eugenia@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: Leon Romanovsky <leon@kernel.org>
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SRQ physical address structure field should be in big-endian format.
Signed-off-by: Artemy Kovalyov <artemyko@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Leon Romanovsky <leon@kernel.org>
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Update struct mlx5_ifc_xrqc_bits according to last specification
Signed-off-by: Artemy Kovalyov <artemyko@mellanox.com>
Signed-off-by: Leon Romanovsky <leon@kernel.org>
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Do not dispatch unknown mlx5 core events on mlx5_ib_event.
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: Eugenia Emantayev <eugenia@mellanox.com>
Signed-off-by: Leon Romanovsky <leon@kernel.org>
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The recent changes, which forced the registration of the boot cpu on UP
systems, which do not have ACPI tables, have been fixed for systems w/o
local APIC, but left a wreckage for systems which have neither ACPI nor
mptables, but the CPU has an APIC, e.g. virtualbox.
The boot process crashes in prefill_possible_map() as it wants to register
the boot cpu, which needs to access the local apic, but the local APIC is
not yet mapped.
There is no reason why init_apic_mapping() can't be invoked before
prefill_possible_map(). So instead of playing another silly early mapping
game, as the ACPI/mptables code does, we just move init_apic_mapping()
before the call to prefill_possible_map().
In hindsight, I should have noticed that combination earlier.
Sorry for the churn (also in stable)!
Fixes: ff8560512b8d ("x86/boot/smp: Don't try to poke disabled/non-existent APIC")
Reported-and-debugged-by: Michal Necasek <michal.necasek@oracle.com>
Reported-and-tested-by: Wolfgang Bauer <wbauer@tmo.at>
Cc: prarit@redhat.com
Cc: ville.syrjala@linux.intel.com
Cc: michael.thayer@oracle.com
Cc: knut.osmundsen@oracle.com
Cc: frank.mehnert@oracle.com
Cc: Borislav Petkov <bp@alien8.de>
Cc: stable@vger.kernel.org
Link: http://lkml.kernel.org/r/alpine.DEB.2.20.1610282114380.5053@nanos
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
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In the code path of acpi_ev_initialize_region(), there is namespace
modification code unlocked. This patch tunes the code to make sure
such modification are always locked.
Fixes: 74f51b80a0c4 (ACPICA: Namespace: Fix dynamic table loading issues)
Tested-by: Imre Deak <imre.deak@intel.com>
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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There is a lock unbalanced exit path in acpi_ds_initialize_method(),
this patch corrects it.
Fixes: 441ad11d078f (ACPICA: Dispatcher: Fix a mutex issue for method auto serialization)
Tested-by: Imre Deak <imre.deak@intel.com>
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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The last step of the method termination should be the end of the method
serialization. Otherwise, the steps happening after it will face the race
issues that cannot be protected by the method serialization mechanism.
This patch fixes this issue by moving the per-method-object deletion code
prior than the end of the method serialization. Otherwise, the possible
race issues may result in AE_ALREADY_EXISTS error in a parallel
environment.
Fixes: 74f51b80a0c4 (ACPICA: Namespace: Fix dynamic table loading issues)
Reported-and-tested-by: Imre Deak <imre.deak@intel.com>
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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Now that we have referece to section name string table in
apply_relocate_add(), use it to
- print the name of section being relocated
- print symbol with NULL name (since it refers to a section)
before
| Section to fixup 7000a060
| =========================================================
| rela->r_off | rela->addend | sym->st_value | ADDR | VALUE
| =========================================================
| 1c 0 7000e000 7000a07c 7000e000 []
| 40 0 7000a000 7000a0a0 7000a000 []
after
| Section to fixup .eh_frame @7000a060
| =========================================================
| r_off r_add st_value ADDRESS VALUE
| =========================================================
| 1c 0 7000e000 7000a07c 7000e000 [.init.text]
| 40 0 7000a000 7000a0a0 7000a000 [.exit.text]
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
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The loop was really needed in .debug_frame regime where wanted make it
as SH_ALLOC so that apply_relocate_add() would process it. That's not
needed for .eh_frame, so we check this in apply_relocate_add() which
gets called for each section.
Note that we need to save reference to "section name strings" section in
module_frob_arch_sections() since apply_relocate_add() doesn't get that
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
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... given that we have perf counters abel to do the same thing non
intrusively
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
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These are really ancient toggles and tools no longer require them to be
passed. This paves way for deprecating them in long run.
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
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The motivation is to identify ARC750 vs. ARC770 (we currently print
generic "ARC700").
A given ARC700 release could be 750 or 770, with same ARCNUM (or family
identifier which is unfortunate). The existing arc_cpu_tbl[] kept a single
concatenated string for core name and release which thus doesn't work
for 750 vs. 770 identification.
So split this into 2 tables, one with core names and other with release.
And while we are at it, get rid of the range checking for family numbers.
We just document the known to exist cores running Linux and ditch
others.
With this in place, we add detection of ARC750 which is
- cores 0x33 and before
- cores 0x34 and later with MMUv2
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
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Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
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This came to light when helping a customer with oldish ARC750 core who
were getting instruction errors because of lack of SWAPE but boot log
was incorrectly printing it as being present
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
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On older arc700 cores, some of the features configured were not present
in Build config registers. To print about them at boot, we just use the
Kconfig option i.e. whether linux is built to use them or not.
So yes this seems bogus, but what else can be done. Moreover if linux is
booting with these enabled, then the Kconfig info is a good indicator
anyways.
Over time these "hacks" accumulated in read_arc_build_cfg_regs() as well
as arc_cpu_mumbojumbo(). so refactor and move all of those in a single
place: read_arc_build_cfg_regs(). This causes some code redcution too:
| bloat-o-meter2 arch/arc/kernel/setup.o.0 arch/arc/kernel/setup.o.1
| add/remove: 0/0 grow/shrink: 2/1 up/down: 64/-132 (-68)
| function old new delta
| setup_processor 610 670 +60
| cpuinfo_arc700 76 80 +4
| arc_cpu_mumbojumbo 752 620 -132
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
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Previously we would not print the case when IOC existed but was not
enabled.
And while at it, reduce one line off boot printing by consolidating
the Peripheral address space and IO-Coherency which in a way
applies to them
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
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Commit c83ed4c9dbb35 ("ubifs: Abort readdir upon error") broke
overlayfs support because the fix exposed an internal error
code to VFS.
Reported-by: Peter Rosin <peda@axentia.se>
Tested-by: Peter Rosin <peda@axentia.se>
Reported-by: Ralph Sennhauser <ralph.sennhauser@gmail.com>
Tested-by: Ralph Sennhauser <ralph.sennhauser@gmail.com>
Fixes: c83ed4c9dbb35 ("ubifs: Abort readdir upon error")
Cc: stable@vger.kernel.org
Signed-off-by: Richard Weinberger <richard@nod.at>
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Commit e96a8a3bb671 ("UBI: Fastmap: Do not add vol if it already
exists") introduced a bug by changing the possible error codes returned
by add_vol():
- this function no longer returns NULL in case of allocation failure
but return ERR_PTR(-ENOMEM)
- when a duplicate entry in the volume RB tree is found it returns
ERR_PTR(-EEXIST) instead of ERR_PTR(-EINVAL)
Fix the tests done on add_vol() return val to match this new behavior.
Fixes: e96a8a3bb671 ("UBI: Fastmap: Do not add vol if it already exists")
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Acked-by: Sheng Yong <shengyong1@huawei.com>
Signed-off-by: Richard Weinberger <richard@nod.at>
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Frank and I maintain this
Signed-off-by: Gabriel Krisman Bertazi <krisman@linux.vnet.ibm.com>
Cc: haver@linux.vnet.ibm.com
Acked-by: Frank Haverkamp <haver@linux.vnet.ibm.com>=
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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This change consists of two changes:
1) If vmci_doorbell_create is called when neither guest nor
host personality as been initialized, vmci_get_context_id
will return VMCI_INVALID_ID. In that case, we should fail
the create call.
2) In doorbell destroy, we assume that vmci_guest_code_active()
has the same return value on create and destroy. That may not
be the case, so we may end up with the wrong refcount.
Instead, destroy should check explicitly whether the doorbell
is in the index table as an indicator of whether the guest
code was active at create time.
Reviewed-by: Adit Ranadive <aditr@vmware.com>
Signed-off-by: Jorgen Hansen <jhansen@vmware.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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When interrupting an application which was allocating DMAable
memory, it was possible, that the DMA memory was deallocated
twice, leading to the error symptoms below.
Thanks to Gerald, who analyzed the problem and provided this
patch.
I agree with his analysis of the problem: ddcb_cmd_fixups() ->
genwqe_alloc_sync_sgl() (fails in f/lpage, but sgl->sgl != NULL
and f/lpage maybe also != NULL) -> ddcb_cmd_cleanup() ->
genwqe_free_sync_sgl() (double free, because sgl->sgl != NULL and
f/lpage maybe also != NULL)
In this scenario we would have exactly the kind of double free that
would explain the WARNING / Bad page state, and as expected it is
caused by broken error handling (cleanup).
Using the Ubuntu git source, tag Ubuntu-4.4.0-33.52, he was able to reproduce
the "Bad page state" issue, and with the patch on top he could not reproduce
it any more.
------------[ cut here ]------------
WARNING: at /build/linux-o03cxz/linux-4.4.0/arch/s390/include/asm/pci_dma.h:141
Modules linked in: qeth_l2 ghash_s390 prng aes_s390 des_s390 des_generic sha512_s390 sha256_s390 sha1_s390 sha_common genwqe_card qeth crc_itu_t qdio ccwgroup vmur dm_multipath dasd_eckd_mod dasd_mod
CPU: 2 PID: 3293 Comm: genwqe_gunzip Not tainted 4.4.0-33-generic #52-Ubuntu
task: 0000000032c7e270 ti: 00000000324e4000 task.ti: 00000000324e4000
Krnl PSW : 0404c00180000000 0000000000156346 (dma_update_cpu_trans+0x9e/0xa8)
R:0 T:1 IO:0 EX:0 Key:0 M:1 W:0 P:0 AS:3 CC:0 PM:0 EA:3
Krnl GPRS: 00000000324e7bcd 0000000000c3c34a 0000000027628298 000000003215b400
0000000000000400 0000000000001fff 0000000000000400 0000000116853000
07000000324e7b1e 0000000000000001 0000000000000001 0000000000000001
0000000000001000 0000000116854000 0000000000156402 00000000324e7a38
Krnl Code: 000000000015633a: 95001000 cli 0(%r1),0
000000000015633e: a774ffc3 brc 7,1562c4
#0000000000156342: a7f40001 brc 15,156344
>0000000000156346: 92011000 mvi 0(%r1),1
000000000015634a: a7f4ffbd brc 15,1562c4
000000000015634e: 0707 bcr 0,%r7
0000000000156350: c00400000000 brcl 0,156350
0000000000156356: eb7ff0500024 stmg %r7,%r15,80(%r15)
Call Trace:
([<00000000001563e0>] dma_update_trans+0x90/0x228)
[<00000000001565dc>] s390_dma_unmap_pages+0x64/0x160
[<00000000001567c2>] s390_dma_free+0x62/0x98
[<000003ff801310ce>] __genwqe_free_consistent+0x56/0x70 [genwqe_card]
[<000003ff801316d0>] genwqe_free_sync_sgl+0xf8/0x160 [genwqe_card]
[<000003ff8012bd6e>] ddcb_cmd_cleanup+0x86/0xa8 [genwqe_card]
[<000003ff8012c1c0>] do_execute_ddcb+0x110/0x348 [genwqe_card]
[<000003ff8012c914>] genwqe_ioctl+0x51c/0xc20 [genwqe_card]
[<000000000032513a>] do_vfs_ioctl+0x3b2/0x518
[<0000000000325344>] SyS_ioctl+0xa4/0xb8
[<00000000007b86c6>] system_call+0xd6/0x264
[<000003ff9e8e520a>] 0x3ff9e8e520a
Last Breaking-Event-Address:
[<0000000000156342>] dma_update_cpu_trans+0x9a/0xa8
---[ end trace 35996336235145c8 ]---
BUG: Bad page state in process jbd2/dasdb1-8 pfn:3215b
page:000003d100c856c0 count:-1 mapcount:0 mapping: (null) index:0x0
flags: 0x3fffc0000000000()
page dumped because: nonzero _count
Signed-off-by: Gerald Schaefer <gerald.schaefer@de.ibm.com>
Signed-off-by: Frank Haverkamp <haver@linux.vnet.ibm.com>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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The function vme_get_size returns the size of the window to the caller,
however it doesn't check the return value of the call to vme_master_get.
Return 0 on failure rather than anything else.
Suggested-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Martyn Welch <martyn.welch@collabora.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Since commit 761ed4a94582ab29 ("tty: serial_core: convert uart_close to
use tty_port_close"), the serial console is broken on various systems
and typing "reboot" splats the following on the serial console:
INIT: Sending p[ 427.863916] BUG: unable to handle kernel NULL pointer dereference at 00000000000001e0
[ 427.885156] IP: [] tty_wakeup+0xc/0x70
[ 427.898337] PGD 0 [ 427.902051]
[ 427.907498] Oops: 0000 [#1] PREEMPT SMP
[ 427.917635] Modules linked in: nfsv3 nfs_acl nfs fscache lockd
sunrpc grace edd af_packet cpufreq_conservative cpufreq_userspace
cpufreq_powersave fuse loop md_mod dm_mod joydev hid_generic usbhid
ipmi_ssif ohci_pci ohci_hcd ehci_pci ehci_hcd e1000e ptp firewire_ohci
edac_core pps_core tpm_infineon sp5100_tco firewire_core acpi_cpufreq
serio_raw pcspkr fjes usbcore shpchp edac_mce_amd tpm_tis ipmi_si
tpm_tis_core i2c_piix4 k10temp sg ipmi_msghandler tpm sr_mod button
cdrom kvm_amd kvm irqbypass crc_itu_t ast ttm drm_kms_helper drm
fb_sys_fops sysimgblt sysfillrect syscopyarea i2c_algo_bit scsi_dh_rdac
scsi_dh_alua scsi_dh_emc scsi_dh_hp_sw ata_generic pata_atiixp
[ 428.054179] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 4.9.0-rc1-1.g73e3f23-default #1
[ 428.072868] Hardware name: System manufacturer System Product Name/KGP(M)E-D16, BIOS 0902 12/03/2010
[ 428.094755] task: ffffffffa2c0d500 task.stack: ffffffffa2c00000
[ 428.109717] RIP: 0010:[] [] tty_wakeup+0xc/0x70
[ 428.128407] RSP: 0018:ffff9a1a5fc03df8 EFLAGS: 00010086
[ 428.142184] RAX: ffff9a1857258000 RBX: ffffffffa3050ea0 RCX: 0000000000000000
[ 428.159649] RDX: 000000000000001b RSI: 0000000000000000 RDI: 0000000000000000
[ 428.177109] RBP: ffff9a1a5fc03e08 R08: 0000000000000000 R09: 0000000000000000
[ 428.194547] R10: 0000000000021c77 R11: 0000000000000000 R12: ffff9a1857258000
[ 428.212002] R13: 0000000000000000 R14: 0000000000000020 R15: 0000000000000020
[ 428.229481] FS: 0000000000000000(0000) GS:ffff9a1a5fc00000(0000) knlGS:0000000000000000
[ 428.248938] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 428.263726] CR2: 00000000000001e0 CR3: 0000000390c06000 CR4: 00000000000006f0
[ 428.281331] Stack:
[ 428.288696] ffffffffa3050ea0 ffff9a1857258000 ffff9a1a5fc03e18 ffffffffa24e0ab1
[ 428.307064] ffff9a1a5fc03e40 ffffffffa24e8865 ffffffffa3050ea0 00000000000000c2
[ 428.325456] 0000000000000046 ffff9a1a5fc03e78 ffffffffa24e8a5f ffffffffa3050ea0
[ 428.343905] Call Trace:
[ 428.352319] [ 428.356216] [] uart_write_wakeup+0x21/0x30
The problem is for console ports, the serial port is not shutdown and
interrupts may fire after the struct tty is gone. Simply calling the
tty_port helper tty_port_tty_wakeup instead of tty_wakeup directly will
ensure there is a valid struct tty.
Fixes: 761ed4a94582ab29 ("tty: serial_core: convert uart_close to use tty_port_close")
Reported-by: Borislav Petkov <bp@alien8.de>
Reported-by: Mike Galbraith <mgalbraith@suse.de>
Cc: Jiri Slaby <jslaby@suse.cz>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: linux-serial@vger.kernel.org
Signed-off-by: Rob Herring <robh@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Eran Ben Elisha
Saeed Mahameed
Maor Gottlieb
Jack Morgenstein
Moni Shoua
Kamal Heib
Majd Dibbiny
Eli Cohen
Max Gurtovoy
Mark Bloch
Mohamad Haj Yahia
Eugenia Emantayev
Artemy Kovalyov
Linus Torvalds
Thomas Gleixner
Lv Zheng
Vineet Gupta
Richard Weinberger
Boris Brezillon
Gabriel Krisman Bertazi
Jorgen Hansen
Gerald Schaefer
Martyn Welch
Rob Herring