Matthew R. Ochs [Fri, 14 Aug 2015 02:47:34 +0000 (21:47 -0500)]
cxlflash: Base error recovery support
Introduce support for enhanced I/O error handling.
A device state is added to track 3 possible states of the device:
Normal - the device is operating normally and is fully operational
Limbo - the device is in a reset/recovery scenario and its operational
status is paused
Failed/terminating - the device has either failed to be reset/recovered
or is being terminated (removed); it is no longer
operational
All operations are allowed when the device is operating normally. When the
device transitions to limbo state, I/O must be paused. To help accomplish
this, a wait queue is introduced where existing and new threads can wait
until the device is no longer in limbo. When coming out of limbo, threads
need to check the state and error out gracefully when encountering the
failed state. When the device transitions to the failed/terminating state,
normal operations are no longer allowed. Only specially designated
operations related to graceful cleanup are permitted.
Signed-off-by: Matthew R. Ochs <mrochs@linux.vnet.ibm.com> Signed-off-by: Manoj N. Kumar <manoj@linux.vnet.ibm.com> Reviewed-by: Daniel Axtens <dja@axtens.net> Reviewed-by: Michael Neuling <mikey@neuling.org> Reviewed-by: Wen Xiong <wenxiong@linux.vnet.ibm.com> Reviewed-by: Brian King <brking@linux.vnet.ibm.com> Signed-off-by: James Bottomley <JBottomley@Odin.com>
Arun Easi [Tue, 4 Aug 2015 17:38:02 +0000 (13:38 -0400)]
qla2xxx: Fix missing device login retries.
On certain conditions, login failures will just invoke
qla2x00_mark_device_lost() with the intend to do login again;
but if login_retry has been set already, that would fail to set the
relogin needed flag which is required to wakeup the DPC to retry.
Chad Dupuis [Tue, 4 Aug 2015 17:37:57 +0000 (13:37 -0400)]
qla2xxx: Do not reset adapter if SRB handle is in range.
If an SRB is NULL but the handle is in range just drop the
command instead of also resetting the adapter. If the handle
is in range then the command was valid at some point and may
have been aborted. Resetting the adapter can lead to extended
recovery times in this case.
Signed-off-by: Chad Dupuis <chad.dupuis@qlogic.com> Signed-off-by: Himanshu Madhani <himanshu.madhani@qlogic.com> Signed-off-by: James Bottomley <JBottomley@Odin.com>
Hiral Patel [Tue, 4 Aug 2015 17:37:56 +0000 (13:37 -0400)]
qla2xxx: Do not crash system for sp ref count zero
Aovid crashing the system in the scenario where firmware
just completes the command and it can not find the command
during abort mailbox processing. This scenario can lead to
sp reference counter being zero. Instead of crashing the
system, use WARN_ON to print warning in log file.
scsi_error: should not get sense for timeout IO in scsi error handler
scsi_error: should not get sense for timeout IO in scsi error handler
When an IO timeout occurs, the IO will be aborted in
scsi_abort_command() and SCSI_EH_ABORT_SCHEDULED will be set. Because
of that, the SCSI_EH_CANCEL_CMD will be clear in scsi_eh_scmd_add().
So when scsi error handler starts, it will get sense for this
timeout IO and the scmd of the IO request will be reused. In that
case, the scmd may be double released when racing with io_done(),
which will result in crash.
SO SCSI_EH_ABORT_SCHEDULED should also be checked when getting sense.
The bug maybe reproduced when the link between host and disk is
unstable.
Signed-off-by: Jiang Biao <jiang.biao2@zte.com.cn> Signed-off-by: Long Chun <long.chun@zte.com.cn> Reviewed-by: Tan Hu <tan.hu@zte.com.cn> Reviewed-by: Chen Donghai <chen.donghai@zte.com.cn> Reviewed-by: Cai Qu <cai.qu@zte.com.cn> Signed-off-by: James Bottomley <JBottomley@Odin.com>
Viswas G [Tue, 11 Aug 2015 09:36:32 +0000 (15:06 +0530)]
pm80xx: Bump pm80xx driver version to 0.1.38
Bump pm80xx driver version to 0.1.38.
Signed-off-by: Viswas G <Viswas.G@pmcs.com> Reviewed-by: Suresh Thiagarajan <Suresh.Thiagarajan@pmcs.com> Reviewed-by: Hannes Reinecke <hare@suse.com> Reviewed-by: Jack Wang <jinpu.wang@profitbricks.com> Reviewed-by: Tomas Henzl <thenzl@redhat.com> Signed-off-by: James Bottomley <JBottomley@Odin.com>
Viswas G [Tue, 11 Aug 2015 09:36:31 +0000 (15:06 +0530)]
pm80xx: Handling Invalid SSP Response frame
The request has to be retried incase if the length of the SSP
Response IU is invalid.
Signed-off-by: Viswas G <Viswas.G@pmcs.com> Reviewed-by: Suresh Thiagarajan <Suresh.Thiagarajan@pmcs.com> Reviewed-by: Hannes Reinecke <hare@suse.com> Reviewed-by: Jack Wang <jinpu.wang@profitbricks.com> Reviewed-by: Tomas Henzl <thenzl@redhat.com> Signed-off-by: James Bottomley <JBottomley@Odin.com>
Viswas G [Tue, 11 Aug 2015 09:36:30 +0000 (15:06 +0530)]
pm80xx: Add PORT RECOVERY TIMEOUT support
PORT RECOVERY TIMEOUT is the maximum time between the controller's
detection of the PHY down until the receipt of the ID_Frame (from the
same remote SAS port). If the time expires before the ID_FRAME is
received, the port is considered INVALID and can be removed. The
IOP_EVENT_PORT_RECOVERY_TIMER_TMO event is reported following the
IOP_EVENT_ PHY_DOWN event when the PHY/port does not recover after
Port Recovery Time.
Signed-off-by: Viswas G <Viswas.G@pmcs.com> Reviewed-by: Suresh Thiagarajan <Suresh.Thiagarajan@pmcs.com> Reviewed-by: Hannes Reinecke <hare@suse.com> Reviewed-by: Jack Wang <jinpu.wang@profitbricks.com> Reviewed-by: Tomas Henzl <thenzl@redhat.com> Signed-off-by: James Bottomley <JBottomley@Odin.com>
Viswas G [Tue, 11 Aug 2015 09:36:29 +0000 (15:06 +0530)]
pm80xx: Remove unnecessary phy disconnect while link error
If the link error happens, we don't need to disconnect the phy,
which will remove the drive. Instead acknowledging the controller
and logging the error will be enough.
Signed-off-by: Viswas G <Viswas.G@pmcs.com> Reviewed-by: Suresh Thiagarajan <Suresh.Thiagarajan@pmcs.com> Reviewed-by: Hannes Reinecke <hare@suse.com> Reviewed-by: Jack Wang <jinpu.wang@profitbricks.com> Reviewed-by: Tomas Henzl <thenzl@redhat.com> Signed-off-by: James Bottomley <JBottomley@Odin.com>
Viswas G [Tue, 11 Aug 2015 09:36:28 +0000 (15:06 +0530)]
pm80xx: Fix for Incorrect DMA Unmapping of SG List
In pm8001_ccb_task_free(), the dma unmapping is done based on
ccb->n_elem value. This should be initialized to zero in the
task_abort(). Otherwise, pm8001_ccb_task_free() will try for
dma_unmap_sg() which is invalid for task abort and can lead to
kernel crash.
Changes From V1:
None
Signed-off-by: Viswas G <Viswas.G@pmcs.com> Reviewed-by: Suresh Thiagarajan <Suresh.Thiagarajan@pmcs.com> Reviewed-by: Hannes Reinecke <hare@suse.com> Reviewed-by: Jack Wang <jinpu.wang@profitbricks.com> Reviewed-by: Tomas Henzl <thenzl@redhat.com> Signed-off-by: James Bottomley <JBottomley@Odin.com>
Viswas G [Tue, 11 Aug 2015 09:36:27 +0000 (15:06 +0530)]
pm80xx: Update For Thermal Page Code
Thermal page code has been changed to 7 for the 12G controllers.
Signed-off-by: Viswas G <Viswas.G@pmcs.com> Reviewed-by: Suresh Thiagarajan <Suresh.Thiagarajan@pmcs.com> Reviewed-by: Hannes Reinecke <hare@suse.com> Reviewed-by: Jack Wang <jinpu.wang@profitbricks.com> Reviewed-by: Tomas Henzl <thenzl@redhat.com> Signed-off-by: James Bottomley <JBottomley@Odin.com>
Viswas G [Tue, 11 Aug 2015 09:36:26 +0000 (15:06 +0530)]
pm80xx: Corrected device state changes in I_T_Nexus_Reset.
In Nexus reset the device state request are not needed.
Signed-off-by: Viswas G <Viswas.G@pmcs.com> Reviewed-by: Suresh Thiagarajan <Suresh.Thiagarajan@pmcs.com> Acked-by: Jack Wang <jinpu.wang@profitbricks.com> Reviewed-by: Tomas Henzl <thenzl@redhat.com> Signed-off-by: James Bottomley <JBottomley@Odin.com>
Viswas G [Tue, 11 Aug 2015 09:36:25 +0000 (15:06 +0530)]
pm80xx: Updated link rate
Updated 12G linkrate to libsas.
Signed-off-by: Viswas G <Viswas.G@pmcs.com> Reviewed-by: Suresh Thiagarajan <Suresh.Thiagarajan@pmcs.com> Reviewed-by: Hannes Reinecke <hare@suse.com> Reviewed-by: Jack Wang <jinpu.wang@profitbricks.com> Reviewed-by: Tomas Henzl <thenzl@redhat.com> Signed-off-by: James Bottomley <JBottomley@Odin.com>
Signed-off-by: Sebastian Herbszt <herbszt@gmx.de> Reviewed-by: James Smart <james.smart@avagotech.com> Signed-off-by: James Bottomley <JBottomley@Odin.com>
qla2xxx: Return the fabric command state for non-task management requests
Invoking get_cmd_state for qla2xxx always returns 0. Instead change it
to return the actual fabric state from qla_tgt_cmd. This will help with
debugging.
Don Brace [Sat, 18 Jul 2015 16:13:15 +0000 (11:13 -0500)]
hpsa: fix rmmod issues
The driver is calling hpsa_shutdown before calling scsi_remove_host.
hpsa_shutdown is disabling interrupts.
scsi_remove_host can trigger I/O operations, such as
SYNCHRONIZE CACHE when multipath is enabled which hang the system.
Call scsi_remove_host before calling hpsa_shutdown.
Reviewed-by: Kevin Barnett <kevin.barnett@pmcs.com> Reviewed-by: Scott Teel <scott.teel@pmcs.com> Reviewed-by: Tomas Henzl <thenzl@redhat.com> Signed-off-by: Don Brace <don.brace@pmcs.com> Signed-off-by: James Bottomley <JBottomley@Odin.com>
A regression was introduced into the hpsa driver a while back so
non-zero LUNs of multi-LUN devices may no longer be presented via
a SAS based Smart Array. I have not done a bisection to discover
the change that caused it.
The CISS firmware specification (available on sourceforge)
defines an 8 byte lunid that describes devices that the Smart
Array can see/present to the system. The current code in the hpsa
driver attempts to find matches for non-zero LUNs with LUN 0 for
a bus/target by zeroing out byte 4 of the lunid and find a match.
This method is sufficient for SCSI based Smart Arrays because
byte 5 is always 0. For SAS based Smart arrays byte 5 of the
lunid contains the path number for a multipath device and
either one or two bits (the documentation does not define how
many bits are used but it appears it may be one only) that
indicate if the given path number in byte 5 must always be
used to access that device. Byte 5 may not always be zero.
The following are lunids (spaces added for clarity) for a
MSL2024 single drive library connected via a H241 Smart Array:
In the 4th byte (counting from 0) you can see that the tape
is LUN 0 and the changer is LUN 1. The 0x80 set in the 5th byte
for the tape drive means the driver should force access to
path 0 (the library in this case was connected to one path only
anyway).
After the changes we can see the following in the dmesg output:
scsi 0:3:0:0: RAID HP H241 1.18 \
PQ: 0 ANSI: 5
scsi 0:2:0:0: Sequential-Access HP Ultrium 6-SCSI 354W \
PQ: 0 ANSI: 6
scsi 0:2:0:1: Medium Changer HP MSL G3 Series 8.70 \
PQ: 0 ANSI: 5
Showing that the changer is correctly identified as LUN 1 of
bus 2 target 0. Before the change the changer device is not seen.
Suggested-by: shane.seymour <shane.seymour@hp.com> Reviewed-by: Kevin Barnett <kevin.barnett@pmcs.com> Reviewed-by: Scott Teel <scott.teel@pmcs.com> Reviewed-by: Tomas Henzl <thenzl@redhat.com> Signed-off-by: Don Brace <don.brace@pmcs.com> Signed-off-by: James Bottomley <JBottomley@Odin.com>
Scott Benesh [Sat, 18 Jul 2015 16:13:04 +0000 (11:13 -0500)]
hpsa: add in new offline mode
prevent adding volumes that are not available.
Reviewed-by: Kevin Barnett <kevin.barnett@pmcs.com> Reviewed-by: Scott Teel <scott.teel@pmcs.com> Reviewed-by: Justin Lindley <justin.lindley@pmcs.com> Reviewed-by: Tomas Henzl <thenzl@redhat.com> Signed-off-by: Don Brace <don.brace@pmcs.com> Signed-off-by: James Bottomley <JBottomley@Odin.com>
Kevin Barnett [Sat, 18 Jul 2015 16:12:59 +0000 (11:12 -0500)]
Change how controllers in mixed mode are handled.
Reviewed-by: Kevin Barnett <kevin.barnett@pmcs.com> Reviewed-by: Scott Teel <scott.teel@pmcs.com> Reviewed-by: Tomas Henzl <thenzl@redhat.com> Signed-off-by: Don Brace <don.brace@pmcs.com> Signed-off-by: James Bottomley <JBottomley@Odin.com>
Don Brace [Sat, 18 Jul 2015 16:12:54 +0000 (11:12 -0500)]
hpsa: add in new controllers
Reviewed-by: Kevin Barnett <kevin.barnett@pmcs.com> Reviewed-by: Scott Teel <scott.teel@pmcs.com> Signed-off-by: Don Brace <don.brace@pmcs.com> Reviewed-by: Tomas Henzl <thenzl@redhat.com> Signed-off-by: James Bottomley <JBottomley@Odin.com>
Don Brace [Sat, 18 Jul 2015 16:12:49 +0000 (11:12 -0500)]
hpsa: cleanup update scsi devices
showing that tables have been updated unnecessarily.
Reviewed-by: Kevin Barnett <kevin.barnett@pmcs.com> Reviewed-by: Scott Teel <scott.teel@pmcs.com> Reviewed-by: Tomas Henzl <thenzl@redhat.com> Signed-off-by: Don Brace <don.brace@pmcs.com> Signed-off-by: James Bottomley <JBottomley@Odin.com>
Joe Handzik [Sat, 18 Jul 2015 16:12:43 +0000 (11:12 -0500)]
hpsa: add sysfs entry path_info to show box and bay information
host no, bus, target, lun, scsi_device_type
for hba mode add: box and bay information
report if the path is active/inactive
Reviewed-by: Kevin Barnett <kevin.barnett@pmcs.com> Reviewed-by: Scott Teel <scott.teel@pmcs.com> Reviewed-by: Tomas Henzl <thenzl@redhat.com> Signed-off-by: Don Brace <don.brace@pmcs.com> Signed-off-by: James Bottomley <JBottomley@Odin.com>
Don Brace [Sat, 18 Jul 2015 16:12:38 +0000 (11:12 -0500)]
hpsa: add PMC to copyright
need to add PMC to copyright notice and update the Hewlett-Packard
copyright notification.
Reviewed-by: Scott Teel <scott.teel@pmcs.com> Reviewed-by: Kevin Barnett <kevin.barnett@pmcs.com> Reviewed-by: Justin Lindley <justin.lindley@pmcs.com> Signed-off-by: Don Brace <don.brace@pmcs.com> Signed-off-by: James Bottomley <JBottomley@Odin.com>
Don Brace [Sat, 18 Jul 2015 16:12:33 +0000 (11:12 -0500)]
hpsa: correct static checker warnings on driver init cleanup
Reported-by: Dan Carpenter <dan.carpenter@oracle.com> Reviewed-by: Kevin Barnett <kevin.barnett@pmcs.com> Reviewed-by: Scott Teel <scott.teel@pmcs.com> Reviewed-by: Tomas Henzl <thenzl@redhat.com> Signed-off-by: Don Brace <don.brace@pmcs.com> Signed-off-by: James Bottomley <JBottomley@Odin.com>
Don Brace [Sat, 18 Jul 2015 16:12:28 +0000 (11:12 -0500)]
hpsa: correct decode sense data
Reported-by: Dan Carpenter <dan.carpenter@oracle.com> Reviewed-by: Kevin Barnett <kevin.barnett@pmcs.com> Reviewed-by: Scott Teel <scott.teel@pmcs.com> Reviewed-by: Tomas Henzl <thenzl@redhat.com> Signed-off-by: Don Brace <don.brace@pmcs.com> Signed-off-by: James Bottomley <JBottomley@Odin.com>
Don Brace [Sat, 18 Jul 2015 16:12:22 +0000 (11:12 -0500)]
hpsa: Correct double unlock of mutex
Reported-by: Dan Carpenter <dan.carpenter@oracle.com> Reviewed-by: Scott Teel <scott.teel@pmcs.com> Reviewed-by: Kevin Barnett <kevin.barnett@pmcs.com> Reviewed-by: Tomas Henzl <thenzl@redhat.com> Signed-off-by: Don Brace <don.brace@pmcs.com> Signed-off-by: James Bottomley <JBottomley@Odin.com>
mpt2sas, mpt3sas: Abort initialization if no memory I/O resources detected
Driver crashes if the BIOS do not set up at least one
memory I/O resource. This failure can happen if the device is too
slow to respond during POST and is missed by the BIOS, but Linux
then detects the device later in the boot process.
Based on a patch from Timothy Pearson <tpearson@raptorengineeringinc.com>
Signed-off-by: Sreekanth Reddy <Sreekanth.Reddy@avagotech.com> Reviewed-by: Hannes Reinecke <hare@suse.com> Signed-off-by: James Bottomley <JBottomley@Odin.com>
The "return QLA_SUCCESS" statement just above the "fw_load_failed"
label cannot be reached, hence remove it. Additionally remove the
"else" keyword since the code block below the if-statement ends
with a return statement.
Signed-off-by: Bart Van Assche <bart.vanassche@sandisk.com> Acked-by: Himanshu Madhani <himanshu.madhani@qlogic.com> Signed-off-by: James Bottomley <JBottomley@Odin.com>
This patch removes 21 casts between an __iomem pointer type and
another data type but also introduces five new casts (see also
the casts with "__force"). Although this patch does not change
any functionality, IMHO the code with __force casts needs further
review.
Signed-off-by: Bart Van Assche <bart.vanassche@sandisk.com> Acked-by: Himanshu Madhani <himanshu.madhani@qlogic.com> Signed-off-by: James Bottomley <JBottomley@Odin.com>
Whether htonl() or __constant_htonl() is used, if the argument
is a constant the conversion happens at compile time. Hence leave
out the __constant_ prefix for this and other endianness
conversion functions. This improves source code readability.
[jejb: checkpatch fixes] Signed-off-by: Bart Van Assche <bart.vanassche@sandisk.com> Acked-by: Himanshu Madhani <himanshu.madhani@qlogic.com> Signed-off-by: James Bottomley <JBottomley@Odin.com>
qla2xxx: Replace two macros with an inline function
Replace the QLA82XX_ADDR_IN_RANGE() and QLA8044_ADDR_IN_RANGE() macros
with the inline function addr_in_range(). This avoids that the compiler
reports the following warning when building with W=1: comparison of
unsigned expression >= 0 is always true.
Signed-off-by: Bart Van Assche <bart.vanassche@sandisk.com> Acked-by: Himanshu Madhani <himanshu.madhani@qlogic.com> Signed-off-by: James Bottomley <JBottomley@Odin.com>
Destroy st_index_idr on module exit, reclaiming the allocated memory.
This was detected by the following semantic patch (written by Luis Rodriguez
<mcgrof@suse.com>)
<SmPL>
@ defines_module_init @
declarer name module_init, module_exit;
declarer name DEFINE_IDR;
identifier init;
@@
Signed-off-by: Johannes Thumshirn <jthumshirn@suse.de> Reviewed-by: Hannes Reinecke <hare@suse.de> Acked-by: Kai Mäkisara <kai.makisara@kolumbus.fi> Signed-off-by: James Bottomley <JBottomley@Odin.com>
Hannes Reinecke [Mon, 6 Jul 2015 11:41:53 +0000 (13:41 +0200)]
scsi: Add ALUA state change UA handling
Log the ALUA state change unit attention correctly with
the message log and emit an event to allow user-space
tools to react to it.
Signed-off-by: Hannes Reinecke <hare@suse.de> Reviewed-by: Ewan D. Milne <emilne@redhat.com> Reviewed-by: Bart Van Assche <bart.vanassche@sandisk.com> Signed-off-by: James Bottomley <JBottomley@Odin.com>
Dan Carpenter [Fri, 3 Jul 2015 08:53:03 +0000 (11:53 +0300)]
mptfusion: prevent some memory corruption
These are signed values the come from the user, we put a cap on the
upper bounds but not on the lower bounds.
We use "karg.dataSgeOffset" to calculate "sz". We verify "sz" and
proceed as if that means that "karg.dataSgeOffset" is correct but this
fails to consider that the "sz" calculations can have integer overflows.
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de> Signed-off-by: James Bottomley <JBottomley@Odin.com>
storvsc: use shost_for_each_device() instead of open coding
Comment in struct Scsi_Host says that drivers are not supposed to access
__devices directly. storvsc_host_scan() doesn't happen in irq context
so we can just use shost_for_each_device().
Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com> Reviewed-by: Long Li <longli@microsoft.com> Acked-by: K. Y. Srinivasan <kys@microsoft.com> Signed-off-by: James Bottomley <JBottomley@Odin.com>
Vitaly Kuznetsov [Thu, 25 Jun 2015 16:12:11 +0000 (18:12 +0200)]
storvsc: be more picky about scmnd->sc_data_direction
Under the 'default' case in scmnd->sc_data_direction we have 3 options:
- DMA_NONE which we handle correctly.
- DMA_BIDIRECTIONAL which is never supposed to be set by SCSI stack.
- Garbage value.
Do WARN() and return -EINVAL in the last two cases. virtio_scsi does
BUG_ON() here but it looks like an overkill.
Reported-by: Radim Krčmář <rkrcmar@redhat.com> Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com> Acked-by: K. Y. Srinivasan <kys@microsoft.com> Signed-off-by: James Bottomley <JBottomley@Odin.com>
Seymour, Shane M [Wed, 24 Jun 2015 06:54:35 +0000 (06:54 +0000)]
st: convert DRIVER_ATTR macros to DRIVER_ATTR_RO
Convert DRIVER_ATTR macros to DRIVER_ATTR_RO requested by
Greg KH. Also switched to using scnprintf instead of snprintf
per Documentation/filesystems/sysfs.txt.
Suggested-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Shane Seymour <shane.seymour@hp.com> Reviewed-by: Hannes Reinecke <hare@suse.de> Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Acked-by: Kai Mäkisara <kai.makisara@kolumbus.fi> Signed-off-by: James Bottomley <JBottomley@Odin.com>
linux [Fri, 31 Jul 2015 03:25:55 +0000 (11:25 +0800)]
hptiop: Support HighPoint RR36xx HBAs and Support SAS tape and SAS media changer
Support HighPoint RR36xx HBAs which are based on Marvell Frey.
Support SAS tape and SAS media changer.
[jejb: remove now unused label] Signed-off-by: HighPoint Linux Team <linux@highpoint-tech.com> Reviewed-by: Hannes Reinecke <hare@suse.de> Signed-off-by: James Bottomley <JBottomley@Odin.com>
Bart Van Assche [Fri, 5 Jun 2015 21:20:40 +0000 (14:20 -0700)]
libfc: Fix a typo in a source code comment
Signed-off-by: Bart Van Assche <bart.vanassche@sandisk.com> Signed-off-by: Vasu Dev <vasu.dev@intel.com> Signed-off-by: James Bottomley <JBottomley@Odin.com>
In case pci_resource_start() or pci_resource_len() reutrn 0, mvsas_ioremap
returns without doing an iounmap() of mvi->regs_ex.
Found by the cocinelle tool.
Signed-off-by: Johannes Thumshirn <jthumshirn@suse.de> Reviewed-by: Hannes Reinecke <hare@suse.de> Signed-off-by: James Bottomley <JBottomley@Odin.com>
qla2xxx: prevent board_disable from running during EEH
Commit f3ddac1918fe963bcbf8d407a3a3c0881b47248b ("[SCSI] qla2xxx:
Disable adapter when we encounter a PCI disconnect.") has introduced a
code that disables the board, releasing some resources, when reading
0xffffffff.
In case this happens when there is an EEH, this read will trigger EEH
detection and set PCI channel offline. EEH will be able to recover the
card from this state by doing a reset, so it's a better option than
simply disabling the card.
Since eeh_check_failure will mark the channel as offline before
returning the read value, in case there really was an EEH, we can simply
check for pci_channel_offline, preventing the board_disable code from
running if it's true.
Without this patch, EEH code will try to access those same resources
that board_disable will try to free. This race can cause EEH recovery to
fail.
[ 504.370577] EEH: Notify device driver to resume
[ 504.370580] qla2xxx [0001:07:00.0]-9002:2: The device failed to resume I/O from slot/link_reset.
Signed-off-by: Thadeu Lima de Souza Cascardo <cascardo@linux.vnet.ibm.com> Acked-by: Himanshu Madhani <himanshu.madhani@qlogic.com> Signed-off-by: James Bottomley <JBottomley@Odin.com>
Signed-off-by: Suresh Thiagarajan <Suresh.Thiagarajan@pmcs.com> Signed-off-by: Viswas G <Viswas.G@pmcs.com> Acked-by: Jack Wang <xjtuwjp@gmail.com> Signed-off-by: James Bottomley <JBottomley@Odin.com>
Matthew R. Ochs [Tue, 9 Jun 2015 22:15:52 +0000 (17:15 -0500)]
cxlflash: Base support for IBM CXL Flash Adapter
SCSI device driver to support filesystem access on the IBM CXL Flash adapter.
Supported-by: Stephen Bates <stephen.bates@pmcs.com> Reviewed-by: Michael Neuling <mikey@neuling.org> Signed-off-by: Matthew R. Ochs <mrochs@linux.vnet.ibm.com> Signed-off-by: Manoj N. Kumar <manoj@linux.vnet.ibm.com> Reviewed-by: Brian King <brking@linux.vnet.ibm.com> Signed-off-by: James Bottomley <JBottomley@Odin.com>
Dan Carpenter [Thu, 4 Jun 2015 14:47:56 +0000 (17:47 +0300)]
hpsa: fix an sprintf() overflow in the reset handler
The string "cmd %d RESET FAILED, new lockup detected" is not quite
large enough so the sprintf() will overflow. I have increased the size
of the buffer and also changed the sprintf calls to snprintf.
Fixes: 73153fe533bc ('hpsa: use block layer tag for command allocation') Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Acked-by: Don Brace <don.brace@pmcs.com> Signed-off-by: James Bottomley <JBottomley@Odin.com>
Chris Leech [Tue, 16 Jun 2015 23:07:13 +0000 (16:07 -0700)]
iSCSI: let session recovery_tmo sysfs writes persist across recovery
The iSCSI session recovery_tmo setting is writeable in sysfs, but it's
also set every time a connection is established when parameters are set
from iscsid over netlink. That results in the timeout being reset to
the default value after every recovery.
The DM multipath tools want to use the sysfs interface to lower the
default timeout when there are multiple paths to fail over. It has
caused confusion that we have a writeable sysfs value that seem to keep
resetting itself.
This patch adds an in-kernel flag that gets set once a sysfs write
occurs, and then ignores netlink parameter setting once it's been
modified via the sysfs interface. My thinking here is that the sysfs
interface is much simpler for external tools to influence the session
timeout, but if we're going to allow it to be modified directly we
should ensure that setting is maintained.
Signed-off-by: Chris Leech <cleech@redhat.com> Reviewed-by: Mike Christie <michaelc@cs.wisc.edu> Signed-off-by: James Bottomley <JBottomley@Odin.com>
Brian King [Fri, 12 Jun 2015 01:45:20 +0000 (20:45 -0500)]
ipr: Endian / sparse fixes
Some misc fixes for endianness checking with sparse so sparse with
endian checking now runs clean. Fixes a minor bug in the process
which was uncovered by sparse which would result in unnecessary
error recovery for check conditions.
Signed-off-by: Brian King <brking@linux.vnet.ibm.com> Reviewed-by: Wen Xiong <wenxiong@linux.vnet.ibm.com> Signed-off-by: James Bottomley <JBottomley@Odin.com>
Wen Xiong [Fri, 12 Jun 2015 01:45:18 +0000 (20:45 -0500)]
ipr: Byte swapping for device_id attribute in sysfs
On LE system, users see the wrong device_id attribute. This patch
does necessary byte swapping for device_id attribute and works on
both of LE and BE systems.
Signed-off-by: Wen Xiong <wenxiong@linux.vnet.ibm.com> Signed-off-by: Brian King <brking@linux.vnet.ibm.com> Signed-off-by: James Bottomley <JBottomley@Odin.com>
Hannes Reinecke [Fri, 12 Jun 2015 14:12:48 +0000 (16:12 +0200)]
scsi: retry MODE SENSE on unit attention
The 'sd' driver is calling scsi_mode_sense() to figure out
internal details. But scsi_mode_sense() never checks for
any pending unit attentions, so we're getting annoying error
messages like:
MODE SENSE: unimplemented page/subpage: 0x00/0x00
and a possible wrong decision for device cache handling.
Reviewed-by: Ewan Milne <emilne@redhat.com> Signed-off-by: Hannes Reinecke <hare@suse.de> Signed-off-by: James Bottomley <JBottomley@Odin.com>
Tony Battersby [Thu, 16 Jul 2015 15:40:41 +0000 (11:40 -0400)]
scsi: fix memory leak with scsi-mq
Fix a memory leak with scsi-mq triggered by commands with large data
transfer length.
__sg_alloc_table() sets both table->nents and table->orig_nents to the
same value. When the scatterlist is DMA-mapped, table->nents is
overwritten with the (possibly smaller) size of the DMA-mapped
scatterlist, while table->orig_nents retains the original size of the
allocated scatterlist. scsi_free_sgtable() should therefore check
orig_nents instead of nents, and all code that initializes sdb->table
without calling __sg_alloc_table() should set both nents and orig_nents.
Fixes: d285203cf647 ("scsi: add support for a blk-mq based I/O path.") Cc: <stable@vger.kernel.org> # 3.17+ Signed-off-by: Tony Battersby <tonyb@cybernetics.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Ewan D. Milne <emilne@redhat.com> Signed-off-by: James Bottomley <JBottomley@Odin.com>
Brian King [Tue, 14 Jul 2015 16:41:33 +0000 (11:41 -0500)]
ipr: Fix invalid array indexing for HRRQ
Fixes another signed / unsigned array indexing bug in the ipr driver.
Currently, when hrrq_index wraps, it becomes a negative number. We
do the modulo, but still have a negative number, so we end up indexing
backwards in the array. Given where the hrrq array is located in memory,
we probably won't actually reference memory we don't own, but nonetheless
ipr is still looking at data within struct ipr_ioa_cfg and interpreting it as
struct ipr_hrr_queue data, so bad things could certainly happen.
Each ipr adapter has anywhere from 1 to 16 HRRQs. By default, we use 2 on new
adapters. Let's take an example:
Assume ioa_cfg->hrrq_index=0x7fffffffe and ioa_cfg->hrrq_num=4:
The atomic_add_return will then return -1. We mod this with 3 and get -2, add
one and get -1 for an array index.
On adapters which support more than a single HRRQ, we dedicate HRRQ to adapter
initialization and error interrupts so that we can optimize the other queues
for fast path I/O. So all normal I/O uses HRRQ 1-15. So we want to spread the
I/O requests across those HRRQs.
With the default module parameter settings, this bug won't hit, only when
someone sets the ipr.number_of_msix parameter to a value larger than 3 is when
bad things start to happen.
Cc: <stable@vger.kernel.org> Tested-by: Wen Xiong <wenxiong@linux.vnet.ibm.com> Reviewed-by: Wen Xiong <wenxiong@linux.vnet.ibm.com> Reviewed-by: Gabriel Krisman Bertazi <krisman@linux.vnet.ibm.com> Signed-off-by: Brian King <brking@linux.vnet.ibm.com> Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com> Signed-off-by: James Bottomley <JBottomley@Odin.com>
Brian King [Tue, 14 Jul 2015 16:41:31 +0000 (11:41 -0500)]
ipr: Fix incorrect trace indexing
When ipr's internal driver trace was changed to an atomic, a signed/unsigned
bug slipped in which results in us indexing backwards in our memory buffer
writing on memory that does not belong to us. This patch fixes this by removing
the modulo and instead just mask off the low bits.
Cc: <stable@vger.kernel.org> Tested-by: Wen Xiong <wenxiong@linux.vnet.ibm.com> Reviewed-by: Wen Xiong <wenxiong@linux.vnet.ibm.com> Reviewed-by: Gabriel Krisman Bertazi <krisman@linux.vnet.ibm.com> Signed-off-by: Brian King <brking@linux.vnet.ibm.com> Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com> Signed-off-by: James Bottomley <JBottomley@Odin.com>
Brian King [Tue, 14 Jul 2015 16:41:29 +0000 (11:41 -0500)]
ipr: Fix locking for unit attention handling
Make sure we have the host lock held when calling scsi_report_bus_reset. Fixes
a crash seen as the __devices list in the scsi host was changing as we were
iterating through it.
Cc: <stable@vger.kernel.org> Reviewed-by: Wen Xiong <wenxiong@linux.vnet.ibm.com> Reviewed-by: Gabriel Krisman Bertazi <krisman@linux.vnet.ibm.com> Signed-off-by: Brian King <brking@linux.vnet.ibm.com> Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com> Signed-off-by: James Bottomley <JBottomley@Odin.com>
scsi: fix host max depth checking for the 'queue_depth' sysfs interface
Commit 1e6f2416044c0 changed the scsi sysfs 'queue_depth' code to
rejects depths higher than the scsi host template setting. But lots
of hosts set this to 1, and update the settings in the scsi host
when the controller/devices probing happens.
This breaks (at least) mpt2sas and mpt3sas runtime setting of queue
depth, returning EINVAL for all settings but '1'. And once it's set to
1, there's no way to go back up.
Cc: stable@vger.kernel.org Fixes: 1e6f2416044c0 "scsi: don't allow setting of queue_depth bigger than can_queue" Signed-off-by: Jens Axboe <axboe@fb.com> Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: James Bottomley <JBottomley@Odin.com>
Analysis reveals the cause of the crash to be due to STp->device
being NULL. The pointer was NULLed via scsi_tape_put(STp) when it
calls scsi_tape_release(). In st_open() we jump to err_out after
scsi_block_when_processing_errors() completes and returns the
device as offline (sdev_state was SDEV_DEL):
1180 /* Open the device. Needs to take the BKL only because of incrementing the SCSI host
1181 module count. */
1182 static int st_open(struct inode *inode, struct file *filp)
1183 {
1184 int i, retval = (-EIO);
1185 int resumed = 0;
1186 struct scsi_tape *STp;
1187 struct st_partstat *STps;
1188 int dev = TAPE_NR(inode);
1189 char *name;
...
1217 if (scsi_autopm_get_device(STp->device) < 0) {
1218 retval = -EIO;
1219 goto err_out;
1220 }
1221 resumed = 1;
1222 if (!scsi_block_when_processing_errors(STp->device)) {
1223 retval = (-ENXIO);
1224 goto err_out;
1225 }
...
1264 err_out:
1265 normalize_buffer(STp->buffer);
1266 spin_lock(&st_use_lock);
1267 STp->in_use = 0;
1268 spin_unlock(&st_use_lock);
1269 scsi_tape_put(STp); <-- STp->device = 0 after this
1270 if (resumed)
1271 scsi_autopm_put_device(STp->device);
1272 return retval;
The ref count for the struct scsi_tape had already been reduced
to 1 when the .remove method of the st module had been called.
The kref_put() in scsi_tape_put() caused scsi_tape_release()
to be called:
So the change to test 'crtc_state->base.active' cannot possibly be
correct as-is.
There may be some other minimal fix (like just checking crtc_state for
NULL), but I'm just reverting it now for the rc2 release, and people
like Daniel Vetter who actually know this code will figure out what the
right solution is in the longer term.
Reported-and-bisected-by: Jörg Otte <jrg.otte@gmail.com> Cc: Ander Conselvan de Oliveira <ander.conselvan.de.oliveira@intel.com> Cc: Jani Nikula <jani.nikula@linux.intel.com> Cc: Daniel Vetter <daniel.vetter@intel.com> CC: Maarten Lankhorst <maarten.lankhorst@linux.intel.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
Pull VFS fixes from Al Viro:
"Fixes for this cycle regression in overlayfs and a couple of
long-standing (== all the way back to 2.6.12, at least) bugs"
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
freeing unlinked file indefinitely delayed
fix a braino in ovl_d_select_inode()
9p: don't leave a half-initialized inode sitting around
Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus
Pull MIPS fixes from Ralf Baechle:
"A fair number of 4.2 fixes also because Markos opened the flood gates.
- Patch up the math used calculate the location for the page bitmap.
- The FDC (Not what you think, FDC stands for Fast Debug Channel) IRQ
around was causing issues on non-Malta platforms, so move the code
to a Malta specific location.
- A spelling fix replicated through several files.
- Fix to the emulation of an R2 instruction for R6 cores.
- Fix the JR emulation for R6.
- Further patching of mindless 64 bit issues.
- Ensure the kernel won't crash on CPUs with L2 caches with >= 8
ways.
- Use compat_sys_getsockopt for O32 ABI on 64 bit kernels.
- Fix cache flushing for multithreaded cores.
- A build fix"
* 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus:
MIPS: O32: Use compat_sys_getsockopt.
MIPS: c-r4k: Extend way_string array
MIPS: Pistachio: Support CDMM & Fast Debug Channel
MIPS: Malta: Make GIC FDC IRQ workaround Malta specific
MIPS: c-r4k: Fix cache flushing for MT cores
Revert "MIPS: Kconfig: Disable SMP/CPS for 64-bit"
MIPS: cps-vec: Use macros for various arithmetics and memory operations
MIPS: kernel: cps-vec: Replace KSEG0 with CKSEG0
MIPS: kernel: cps-vec: Use ta0-ta3 pseudo-registers for 64-bit
MIPS: kernel: cps-vec: Replace mips32r2 ISA level with mips64r2
MIPS: kernel: cps-vec: Replace 'la' macro with PTR_LA
MIPS: kernel: smp-cps: Fix 64-bit compatibility errors due to pointer casting
MIPS: Fix erroneous JR emulation for MIPS R6
MIPS: Fix branch emulation for BLTC and BGEC instructions
MIPS: kernel: traps: Fix broken indentation
MIPS: bootmem: Don't use memory holes for page bitmap
MIPS: O32: Do not handle require 32 bytes from the stack to be readable.
MIPS, CPUFREQ: Fix spelling of Institute.
MIPS: Lemote 2F: Fix build caused by recent mass rename.
Merge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 fixes from Thomas Gleixner:
- the high latency PIT detection fix, which slipped through the cracks
for rc1
- a regression fix for the early printk mechanism
- the x86 part to plug irq/vector related hotplug races
- move the allocation of the espfix pages on cpu hotplug to non atomic
context. The current code triggers a might_sleep() warning.
- a series of KASAN fixes addressing boot crashes and usability
- a trivial typo fix for Kconfig help text
* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/kconfig: Fix typo in the CONFIG_CMDLINE_BOOL help text
x86/irq: Retrieve irq data after locking irq_desc
x86/irq: Use proper locking in check_irq_vectors_for_cpu_disable()
x86/irq: Plug irq vector hotplug race
x86/earlyprintk: Allow early_printk() to use console style parameters like '115200n8'
x86/espfix: Init espfix on the boot CPU side
x86/espfix: Add 'cpu' parameter to init_espfix_ap()
x86/kasan: Move KASAN_SHADOW_OFFSET to the arch Kconfig
x86/kasan: Add message about KASAN being initialized
x86/kasan: Fix boot crash on AMD processors
x86/kasan: Flush TLBs after switching CR3
x86/kasan: Fix KASAN shadow region page tables
x86/init: Clear 'init_level4_pgt' earlier
x86/tsc: Let high latency PIT fail fast in quick_pit_calibrate()
Merge branch 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull timer fixes from Thomas Gleixner:
"This update from the timer departement contains:
- A series of patches which address a shortcoming in the tick
broadcast code.
If the broadcast device is not available or an hrtimer emulated
broadcast device, some of the original assumptions lead to boot
failures. I rather plugged all of the corner cases instead of only
addressing the issue reported, so the change got a little larger.
Has been extensivly tested on x86 and arm.
- Get rid of the last holdouts using do_posix_clock_monotonic_gettime()
- A regression fix for the imx clocksource driver
- An update to the new state callbacks mechanism for clockevents.
This is required to simplify the conversion, which will take place
in 4.3"
* 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
tick/broadcast: Prevent NULL pointer dereference
time: Get rid of do_posix_clock_monotonic_gettime
cris: Replace do_posix_clock_monotonic_gettime()
tick/broadcast: Unbreak CONFIG_GENERIC_CLOCKEVENTS=n build
tick/broadcast: Handle spurious interrupts gracefully
tick/broadcast: Check for hrtimer broadcast active early
tick/broadcast: Return busy when IPI is pending
tick/broadcast: Return busy if periodic mode and hrtimer broadcast
tick/broadcast: Move the check for periodic mode inside state handling
tick/broadcast: Prevent deep idle if no broadcast device available
tick/broadcast: Make idle check independent from mode and config
tick/broadcast: Sanity check the shutdown of the local clock_event
tick/broadcast: Prevent hrtimer recursion
clockevents: Allow set-state callbacks to be optional
clocksource/imx: Define clocksource for mx27
Merge branch 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull irq fix from Thomas Gleixner:
"A single fix for a cpu hotplug race vs. interrupt descriptors:
Prevent irq setup/teardown across the cpu starting/dying parts of cpu
hotplug so that the starting/dying cpu has a stable view of the
descriptor space. This has been an issue for all architectures in the
cpu dying phase, where interrupts are migrated away from the dying
cpu. In the starting phase its mostly a x86 issue vs the vector space
update"
* 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
hotplug: Prevent alloc/free of irq descriptors during cpu up/down
Al Viro [Wed, 8 Jul 2015 01:42:38 +0000 (02:42 +0100)]
freeing unlinked file indefinitely delayed
Normally opening a file, unlinking it and then closing will have
the inode freed upon close() (provided that it's not otherwise busy and
has no remaining links, of course). However, there's one case where that
does *not* happen. Namely, if you open it by fhandle with cold dcache,
then unlink() and close().
In normal case you get d_delete() in unlink(2) notice that dentry
is busy and unhash it; on the final dput() it will be forcibly evicted from
dcache, triggering iput() and inode removal. In this case, though, we end
up with *two* dentries - disconnected (created by open-by-fhandle) and
regular one (used by unlink()). The latter will have its reference to inode
dropped just fine, but the former will not - it's considered hashed (it
is on the ->s_anon list), so it will stay around until the memory pressure
will finally do it in. As the result, we have the final iput() delayed
indefinitely. It's trivial to reproduce -
main()
{
int fd;
union {
struct file_handle f;
char buf[MAX_HANDLE_SZ];
} x;
int m;
x.f.handle_bytes = sizeof(x);
chdir("/root");
mkdir("foo", 0700);
fd = open("foo/bar", O_CREAT | O_RDWR, 0600);
close(fd);
name_to_handle_at(AT_FDCWD, "foo/bar", &x.f, &m, 0);
flush_dcache();
fd = open_by_handle_at(AT_FDCWD, &x.f, O_RDWR);
unlink("foo/bar");
write(fd, buf, sizeof(buf));
system("df ."); /* 20Mb eaten */
close(fd);
system("df ."); /* should've freed those 20Mb */
flush_dcache();
system("df ."); /* should be the same as #2 */
}
will spit out something like
Filesystem 1K-blocks Used Available Use% Mounted on
/dev/root 322023 303843 1131 100% /
Filesystem 1K-blocks Used Available Use% Mounted on
/dev/root 322023 303843 1131 100% /
Filesystem 1K-blocks Used Available Use% Mounted on
/dev/root 322023 283282 21692 93% /
- inode gets freed only when dentry is finally evicted (here we trigger
than by remount; normally it would've happened in response to memory
pressure hell knows when).
Cc: stable@vger.kernel.org # v2.6.38+; earlier ones need s/kill_it/unhash_it/ Acked-by: J. Bruce Fields <bfields@fieldses.org> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Al Viro [Sun, 12 Jul 2015 14:39:45 +0000 (10:39 -0400)]
fix a braino in ovl_d_select_inode()
when opening a directory we want the overlayfs inode, not one from
the topmost layer.
Reported-By: Andrey Jr. Melnikov <temnota.am@gmail.com> Tested-By: Andrey Jr. Melnikov <temnota.am@gmail.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Merge branch 'libnvdimm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/djbw/nvdimm
Pull libnvdimm fixes from Dan Williams:
"1) Fixes for a handful of smatch reports (Thanks Dan C.!) and minor
bug fixes (patches 1-6)
2) Correctness fixes to the BLK-mode nvdimm driver (patches 7-10).
Granted these are slightly large for a -rc update. They have been
out for review in one form or another since the end of May and were
deferred from the merge window while we settled on the "PMEM API"
for the PMEM-mode nvdimm driver (ie memremap_pmem, memcpy_to_pmem,
and wmb_pmem).
Now that those apis are merged we implement them in the BLK driver
to guarantee that mmio aperture moves stay ordered with respect to
incoming read/write requests, and that writes are flushed through
those mmio-windows and platform-buffers to be persistent on media.
These pass the sub-system unit tests with the updates to
tools/testing/nvdimm, and have received a successful build-report from
the kbuild robot (468 configs).
With acks from Rafael for the touches to drivers/acpi/"
* 'libnvdimm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/djbw/nvdimm:
nfit: add support for NVDIMM "latch" flag
nfit: update block I/O path to use PMEM API
tools/testing/nvdimm: add mock acpi_nfit_flush_address entries to nfit_test
tools/testing/nvdimm: fix return code for unimplemented commands
tools/testing/nvdimm: mock ioremap_wt
pmem: add maintainer for include/linux/pmem.h
nfit: fix smatch "use after null check" report
nvdimm: Fix return value of nvdimm_bus_init() if class_create() fails
libnvdimm: smatch cleanups in __nd_ioctl
sparse: fix misplaced __pmem definition
Merge branch 'i2c/for-current' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux
Pull i2c fixes from Wolfram Sang:
"Mostly slight adjusments for new drivers, but also one core fix for
which finally the dependencies are now available as well"
* 'i2c/for-current' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux:
i2c: Mark instantiated device nodes with OF_POPULATE
i2c: jz4780: Fix return value if probe fails
i2c: xgene-slimpro: Fix missing mbox_free_channel call in probe error path
i2c: I2C_MT65XX should depend on HAS_DMA
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input
Pull input fixes from Dmitry Torokhov:
"A fix (revert) for a recent regression in Synaptics driver and a fix
for Elan i2c touchpad driver"
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input:
Revert "Input: synaptics - allocate 3 slots to keep stability in image sensors"
Input: elan_i2c - change the hover event from MT to ST
Merge tag 'clk-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux
Pull clk fixes from Stephen Boyd:
"A small set of fixes for problems found by smatch in new drivers that
we added this rc and a handful of driver fixes that came in during the
merge window"
* tag 'clk-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux:
drivers: clk: st: Incorrect register offset used for lock_status
clk: mediatek: mt8173: Fix enabling of critical clocks
drivers: clk: st: Fix mux bit-setting for Cortex A9 clocks
drivers: clk: st: Add CLK_GET_RATE_NOCACHE flag to clocks
drivers: clk: st: Fix flexgen lock init
drivers: clk: st: Fix FSYN channel values
drivers: clk: st: Remove unused code
clk: qcom: Use parent rate when set rate to pixel RCG clock
clk: at91: do not leak resources
clk: stm32: Fix out-by-one error path in the index lookup
clk: iproc: fix bit manipulation arithmetic
clk: iproc: fix memory leak from clock name
Merge branch 'drm-fixes' of git://people.freedesktop.org/~airlied/linux
Pull drm fixes from Dave Airlie:
"A bunch of fixes for radeon, intel, omap and one amdkfd fix.
Radeon fixes are all over, but it does fix some cursor corruption
across suspend/resume. i915 should fix the second warn you were
seeing, so let us know if not. omap is a bunch of small fixes"
* 'drm-fixes' of git://people.freedesktop.org/~airlied/linux: (28 commits)
drm/radeon: disable vce init on cayman (v2)
drm/amdgpu: fix timeout calculation
drm/radeon: check if BO_VA is set before adding it to the invalidation list
drm/radeon: allways add the VM clear duplicate
Revert "Revert "drm/radeon: dont switch vt on suspend""
drm/radeon: Fold radeon_set_cursor() into radeon_show_cursor()
drm/radeon: unpin cursor BOs on suspend and pin them again on resume (v2)
drm/radeon: Clean up reference counting and pinning of the cursor BOs
drm/amdkfd: validate pdd where it acquired first
Revert "drm/i915: Allocate context objects from stolen"
drm/i915: Declare the swizzling unknown for L-shaped configurations
drm/radeon: fix underflow in r600_cp_dispatch_texture()
drm/radeon: default to 2048 MB GART size on SI+
drm/radeon: fix HDP flushing
drm/radeon: use RCU query for GEM_BUSY syscall
drm/amdgpu: Handle irqs only based on irq ring, not irq status regs.
drm/radeon: Handle irqs only based on irq ring, not irq status regs.
drm/i915: Use crtc_state->active in primary check_plane func
drm/i915: Check crtc->active in intel_crtc_disable_planes
drm/i915: Restore all GGTT VMAs on resume
...
Merge branch 'for-linus2' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security
Pull selinux fixes from James Morris.
* 'for-linus2' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security:
selinux: fix mprotect PROT_EXEC regression caused by mm change
selinux: don't waste ebitmap space when importing NetLabel categories
Merge branch 'for-linus-4.2' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs
Pull btrfs fixes from Chris Mason:
"This is an assortment of fixes. Most of the commits are from Filipe
(fsync, the inode allocation cache and a few others). Mark kicked in
a series fixing corners in the extent sharing ioctls, and everyone
else fixed up on assorted other problems"
* 'for-linus-4.2' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs:
Btrfs: fix wrong check for btrfs_force_chunk_alloc()
Btrfs: fix warning of bytes_may_use
Btrfs: fix hang when failing to submit bio of directIO
Btrfs: fix a comment in inode.c:evict_inode_truncate_pages()
Btrfs: fix memory corruption on failure to submit bio for direct IO
btrfs: don't update mtime/ctime on deduped inodes
btrfs: allow dedupe of same inode
btrfs: fix deadlock with extent-same and readpage
btrfs: pass unaligned length to btrfs_cmp_data()
Btrfs: fix fsync after truncate when no_holes feature is enabled
Btrfs: fix fsync xattr loss in the fast fsync path
Btrfs: fix fsync data loss after append write
Btrfs: fix crash on close_ctree() if cleaner starts new transaction
Btrfs: fix race between caching kthread and returning inode to inode cache
Btrfs: use kmem_cache_free when freeing entry in inode cache
Btrfs: fix race between balance and unused block group deletion
btrfs: add error handling for scrub_workers_get()
btrfs: cleanup noused initialization of dev in btrfs_end_bio()
btrfs: qgroup: allow user to clear the limitation on qgroup
Merge tag 'armsoc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull ARM SoC fixes from Kevin Hilman:
"A fairly random colletion of fixes based on -rc1 for OMAP, sunxi and
prima2 as well as a few arm64-specific DT fixes.
This series also includes a late to support a new Allwinner (sunxi)
SoC, but since it's rather simple and isolated to the
platform-specific code, it's included it for this -rc"
* tag 'armsoc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc:
arm64: dts: add device tree for ARM SMM-A53x2 on LogicTile Express 20MG
arm: dts: vexpress: add missing CCI PMU device node to TC2
arm: dts: vexpress: describe all PMUs in TC2 dts
GICv3: Add ITS entry to THUNDER dts
arm64: dts: Add poweroff button device node for APM X-Gene platform
ARM: dts: am4372.dtsi: disable rfbi
ARM: dts: am57xx-beagle-x15: Provide supply for usb2_phy2
ARM: dts: am4372: Add emif node
Revert "ARM: dts: am335x-boneblack: disable RTC-only sleep"
ARM: sunxi: Enable simplefb in the defconfig
ARM: Remove deprecated symbol from defconfig files
ARM: sunxi: Add Machine support for A33
ARM: sunxi: Introduce Allwinner H3 support
Documentation: sunxi: Update Allwinner SoC documentation
ARM: prima2: move to use REGMAP APIs for rtciobrg
ARM: dts: atlas7: add pinctrl and gpio descriptions
ARM: OMAP2+: Remove unnessary return statement from the void function, omap2_show_dma_caps
memory: omap-gpmc: Fix parsing of devices
Thomas Gleixner [Sat, 11 Jul 2015 12:26:34 +0000 (14:26 +0200)]
tick/broadcast: Prevent NULL pointer dereference
Dan reported that the recent changes to the broadcast code introduced
a potential NULL dereference.
Add the proper check.
Fixes: e0454311903d "tick/broadcast: Sanity check the shutdown of the local clock_event" Reported-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Merge branch 'parisc-4.2-1' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux
Pull parisc fixes from Helge Deller:
"We have one important patch from Dave Anglin and myself which fixes
PTE/TLB race conditions which caused random segmentation faults on our
debian buildd servers, and one patch from Alex Ivanov which speeds up
the graphical text console on the STI framebuffer driver"
* 'parisc-4.2-1' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux:
parisc: Fix some PTE/TLB race conditions and optimize __flush_tlb_range based on timing results
stifb: Implement hardware accelerated copyarea
Stephen Smalley [Fri, 10 Jul 2015 13:40:59 +0000 (09:40 -0400)]
selinux: fix mprotect PROT_EXEC regression caused by mm change
commit 66fc13039422ba7df2d01a8ee0873e4ef965b50b ("mm: shmem_zero_setup
skip security check and lockdep conflict with XFS") caused a regression
for SELinux by disabling any SELinux checking of mprotect PROT_EXEC on
shared anonymous mappings. However, even before that regression, the
checking on such mprotect PROT_EXEC calls was inconsistent with the
checking on a mmap PROT_EXEC call for a shared anonymous mapping. On a
mmap, the security hook is passed a NULL file and knows it is dealing
with an anonymous mapping and therefore applies an execmem check and no
file checks. On a mprotect, the security hook is passed a vma with a
non-NULL vm_file (as this was set from the internally-created shmem
file during mmap) and therefore applies the file-based execute check
and no execmem check. Since the aforementioned commit now marks the
shmem zero inode with the S_PRIVATE flag, the file checks are disabled
and we have no checking at all on mprotect PROT_EXEC. Add a test to
the mprotect hook logic for such private inodes, and apply an execmem
check in that case. This makes the mmap and mprotect checking
consistent for shared anonymous mappings, as well as for /dev/zero and
ashmem.
Cc: <stable@vger.kernel.org> # 4.1.x Signed-off-by: Stephen Smalley <sds@tycho.nsa.gov> Signed-off-by: Paul Moore <pmoore@redhat.com>
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