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commit 01a4cc4d0cd6a836c7b923760e8eb1cbb6a47258 upstream.
In some cases, the fcoe_rx_list may contains multiple instances
of the same skb (the so called "shared skbs").
the bnx2fc_l2_rcv thread is a loop that extracts a skb from the list,
modifies (and destroys) its content and then proceed to the next one.
The problem is that if the skb is shared, the remaining instances will
be corrupted.
The solution is to use skb_share_check() before adding the skb to the
fcoe_rx_list.
[ 6286.808725] ------------[ cut here ]------------
[ 6286.808729] WARNING: at include/scsi/fc_frame.h:173 bnx2fc_l2_rcv_thread+0x425/0x450 [bnx2fc]()
[ 6286.808748] Modules linked in: bnx2x(-) mdio dm_service_time bnx2fc cnic uio fcoe libfcoe 8021q garp stp mrp libfc llc scsi_transport_fc scsi_tgt sg iTCO_wdt iTCO_vendor_support coretemp kvm_intel kvm crct10dif_pclmul crc32_pclmul crc32c_intel e1000e ghash_clmulni_intel aesni_intel lrw gf128mul glue_helper ablk_helper ptp cryptd hpilo serio_raw hpwdt lpc_ich pps_core ipmi_si pcspkr mfd_core ipmi_msghandler shpchp pcc_cpufreq mperf nfsd auth_rpcgss nfs_acl lockd sunrpc dm_multipath xfs libcrc32c ata_generic pata_acpi sd_mod crc_t10dif crct10dif_common mgag200 syscopyarea sysfillrect sysimgblt i2c_algo_bit ata_piix drm_kms_helper ttm drm libata i2c_core hpsa dm_mirror dm_region_hash dm_log dm_mod [last unloaded: mdio]
[ 6286.808750] CPU: 3 PID: 1304 Comm: bnx2fc_l2_threa Not tainted 3.10.0-121.el7.x86_64 #1
[ 6286.808750] Hardware name: HP ProLiant DL120 G7, BIOS J01 07/01/2013
[ 6286.808752] 0000000000000000 000000000b36e715 ffff8800deba1e00 ffffffff815ec0ba
[ 6286.808753] ffff8800deba1e38 ffffffff8105dee1 ffffffffa05618c0 ffff8801e4c81888
[ 6286.808754] ffffe8ffff663868 ffff8801f402b180 ffff8801f56bc000 ffff8800deba1e48
[ 6286.808754] Call Trace:
[ 6286.808759] [<ffffffff815ec0ba>] dump_stack+0x19/0x1b
[ 6286.808762] [<ffffffff8105dee1>] warn_slowpath_common+0x61/0x80
[ 6286.808763] [<ffffffff8105e00a>] warn_slowpath_null+0x1a/0x20
[ 6286.808765] [<ffffffffa054f415>] bnx2fc_l2_rcv_thread+0x425/0x450 [bnx2fc]
[ 6286.808767] [<ffffffffa054eff0>] ? bnx2fc_disable+0x90/0x90 [bnx2fc]
[ 6286.808769] [<ffffffff81085aef>] kthread+0xcf/0xe0
[ 6286.808770] [<ffffffff81085a20>] ? kthread_create_on_node+0x140/0x140
[ 6286.808772] [<ffffffff815fc76c>] ret_from_fork+0x7c/0xb0
[ 6286.808773] [<ffffffff81085a20>] ? kthread_create_on_node+0x140/0x140
[ 6286.808774] ---[ end trace c6cdb939184ccb4e ]---
Signed-off-by: Maurizio Lombardi <mlombard@redhat.com>
Acked-by: Chad Dupuis <chad.dupuis@qlogic.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 1899045510ff109980d9cc34e330fd8ca3631871 upstream.
Intel Multi-Flex LUNs choke on REPORT SUPPORTED OPERATION CODES
resulting in sd_mod hanging for several minutes on startup.
The issue was introduced with WRITE SAME discovery heuristics.
Fixes: 5db44863b6eb ("[SCSI] sd: Implement support for WRITE SAME")
Signed-off-by: Christian Sünkenberg <christian.suenkenberg@hfg-karlsruhe.de>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 48379270fe6808cf4612ee094adc8da2b7a83baa upstream.
Setups that use the blk-mq I/O path can lock up if a host with a single
device that has its door locked enters EH. Make sure to only send the
command to re-lock the door to devices that actually were reset and thus
might have lost their state. Otherwise the EH code might be get blocked
on blk_get_request as all requests for non-reset devices might be in use.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reported-by: Meelis Roos <meelis.roos@ut.ee>
Tested-by: Meelis Roos <meelis.roos@ut.ee>
Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit f4c24db1b7ad0ce84409e15744d26c6f86a96840 upstream.
The code is currently riddled with "drop the hardware_lock to avoid a
deadlock" bugs that expose races. One of those races seems to expose a
valid warning in tcm_qla2xxx_clear_nacl_from_fcport_map. Add some
bandaid to it.
Signed-off-by: Joern Engel <joern@logfs.org>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit db7157d4cfce6edf052452fb1d327d4d11b67f4c upstream.
Once calling scsi_host_put, be careful to not access qla_hw_data through
the Scsi_Host private data (ie, scsi_qla_host base_vha).
Fixes: fe1b806f4f71 ("qla2xxx: Refactor shutdown code so some functionality can be reused")
Signed-off-by: Joe Lawrence <joe.lawrence@stratus.com>
Acked-by: Chad Dupuis <chad.dupuis@qlogic.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 75554b68ac1e018bca00d68a430b92ada8ab52dd upstream.
Signed-off-by: Arun Easi <arun.easi@qlogic.com>
Signed-off-by: Saurav Kashyap <saurav.kashyap@qlogic.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit a41a9ad3bbf61fae0b6bfb232153da60d14fdbd9 upstream.
Dan Carpenter found a issue where be2iscsi would copy the ip
from userspace to the driver buffer before checking the len
of the data being copied:
http://marc.info/?l=linux-scsi&m=140982651504251&w=2
This patch just has us only copy what we the driver buffer
can support.
Tested-by: John Soni Jose <sony.john-n@emulex.com>
Signed-off-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit db9bfd64b14a3a8f1868d2164518fdeab1b26ad1 upstream.
This patches fixes a potential buffer overrun in __iscsi_conn_send_pdu.
This function is used by iscsi drivers and userspace to send iscsi PDUs/
commands. For login commands, we have a set buffer size. For all other
commands we do not support data buffers.
This was reported by Dan Carpenter here:
http://www.spinics.net/lists/linux-scsi/msg66838.html
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Mike Christie <michaelc@cs.wisc.edu>
Reviewed-by: Sagi Grimberg <sagig@mellanox.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 03a6c3ff3282ee9fa893089304d951e0be93a144 upstream.
bfa_swap_words() shifts its argument (assumed to be 64-bit) by 32 bits
each way. In two places the argument type is dma_addr_t, which may be
32-bit, in which case the effect of the bit shift is undefined:
drivers/scsi/bfa/bfa_fcpim.c: In function 'bfa_ioim_send_ioreq':
drivers/scsi/bfa/bfa_fcpim.c:2497:4: warning: left shift count >= width of type [enabled by default]
addr = bfa_sgaddr_le(sg_dma_address(sg));
^
drivers/scsi/bfa/bfa_fcpim.c:2497:4: warning: right shift count >= width of type [enabled by default]
drivers/scsi/bfa/bfa_fcpim.c:2509:4: warning: left shift count >= width of type [enabled by default]
addr = bfa_sgaddr_le(sg_dma_address(sg));
^
drivers/scsi/bfa/bfa_fcpim.c:2509:4: warning: right shift count >= width of type [enabled by default]
Avoid this by adding casts to u64 in bfa_swap_words().
Compile-tested only.
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com>
Acked-by: Anil Gurumurthy <anil.gurumurthy@qlogic.com>
Fixes: f16a17507b09 ('[SCSI] bfa: remove all OS wrappers')
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit cd53eb686d2418eda938aad3c9da42b7dfa9351f upstream.
If scsi_remove_host() is called while an rport is in the blocked state
then scsi_remove_host() will only finish if the rport is unblocked
from inside a timer function. Make sure that an rport only enters the
blocked state if a timer will be started that will unblock it. This
avoids that unloading the ib_srp kernel module after having
disconnected the initiator from the target system results in a
deadlock if both the fast_io_fail_tmo and dev_loss_tmo parameters have
been set to "off".
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Reviewed-by: Sagi Grimberg <sagig@mellanox.com>
Reviewed-by: David Dillow <dave@thedillows.org>
Signed-off-by: Roland Dreier <roland@purestorage.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 0213436a2cc5e4a5ca2fabfaa4d3877097f3b13f upstream.
Some devices don't like REPORT SUPPORTED OPERATION CODES and will
simply timeout causing sd_mod init to take a very very long time.
Introduce BLIST_NO_RSOC scsi scan flag, that stops RSOC from being
issued. Add it to Promise Vtrak E610f entry in scsi scan
blacklist. Fixes bug #79901 reported at
https://bugzilla.kernel.org/show_bug.cgi?id=79901
Fixes: 98dcc2946adb ("SCSI: sd: Update WRITE SAME heuristics")
Signed-off-by: Janusz Dziemidowicz <rraptorr@nails.eu.org>
Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit c1d40a527e885a40bb9ea6c46a1b1145d42b66a0 upstream.
Despite supporting modern SCSI features some storage devices continue to
claim conformance to an older version of the SPC spec. This is done for
compatibility with legacy operating systems.
Linux by default will not attempt to read VPD pages on devices that
claim SPC-2 or older. Introduce a blacklist flag that can be used to
trigger VPD page inquiries on devices that are known to support them.
Reported-by: KY Srinivasan <kys@microsoft.com>
Tested-by: KY Srinivasan <kys@microsoft.com>
Reviewed-by: KY Srinivasan <kys@microsoft.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 22ffeb48b7584d6cd50f2a595ed6065d86a87459 upstream.
Sequential scan for more than 256 LUNs is very fragile as
LUNs might not be numbered sequentially after that point.
SAM revisions later than SCSI-3 impose a structure on
LUNs larger than 256, making LUN numbers between 256
and 16384 illegal.
SCSI-3, however allows for plain 64-bit numbers with
no internal structure.
So restrict sequential LUN scan to 256 LUNs and add a
new blacklist flag 'BLIST_SCSI3LUN' to scan up to
max_lun devices.
Signed-off-by: Hannes Reinecke <hare@suse.de>
Reviewed-by: Ewan Milne <emilne@redhat.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 3533f8603d28b77c62d75ec899449a99bc6b77a1 upstream.
On some Windows hosts on FC SANs, TEST_UNIT_READY can return SRB_STATUS_ERROR.
Correctly handle this. Note that there is sufficient sense information to
support scsi error handling even in this case.
Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit f885fb73f64154690c2158e813de56363389ffec upstream.
Correctly set SRB flags for all valid I/O directions. Some IHV drivers on the
Windows host require this. The host validates the command and SRB flags
prior to passing the command down to native driver stack.
Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit adb6f9e1a8c6af1037232b59edb11277471537ea upstream.
Based on the negotiated VMBUS protocol version, we adjust the size of the storage
protocol messages. The two sizes we currently handle are pre-win8 and post-win8.
In WS2012 R2, we are negotiating higher VMBUS protocol version than the win8
version. Make adjustments to correctly handle this.
Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 52f9614dd8294e95d2c0929c2d4f64b077ae486f upstream.
Set cmd_per_lun to reflect value supported by the Host.
Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 4cd83ecdac20d30725b4f96e5d7814a1e290bc7e upstream.
Hyper-V hosts can support multiple targets and multiple channels and larger number of
LUNs per target. Update the code to reflect this. With this patch we can correctly
enumerate all the paths in a multi-path storage environment.
Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 8caf92d80526f3d7cc96831ec18b384ebcaccdf0 upstream.
Going forward it is possible that some of the commands that are not currently
implemented will be implemented on future Windows hosts. Even if they are not
implemented, we are told the host will corrrectly handle unsupported
commands (by returning appropriate return code and sense information).
Make command filtering depend on the host version.
Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 56b26e69c8283121febedd12b3cc193384af46b9 upstream.
On Azure, we have seen instances of unbounded I/O latencies. To deal with
this issue, implement handler that can reset the timeout. Note that the
host gaurantees that it will respond to each command that has been issued.
Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Reviewed-by: Hannes Reinecke <hare@suse.de>
[hch: added a better comment explaining the issue]
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 0758f4f732b08b6ef07f2e5f735655cf69fea477 upstream.
When copy_from_user fails, return -EFAULT, not -ENOMEM
Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com>
Reported-by: Robert Elliott <elliott@hp.com>
Reviewed-by: Joe Handzik <joseph.t.handzik@hp.com>
Reviewed-by: Scott Teel <scott.teel@hp.com>
Reviewed by: Mike MIller <michael.miller@canonical.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 0b9e7b741f2bf8103b15bb14d5b4a6f5ee91c59a upstream.
commit 28e134464734 "[SCSI] hpsa: enable unit attention reporting"
turns on unit attention notifications, but got the change wrong for
all architectures other than x86, which now store an uninitialized
value into the device register.
Gcc helpfully warns about this:
../drivers/scsi/hpsa.c: In function 'hpsa_set_driver_support_bits':
../drivers/scsi/hpsa.c:6373:17: warning: 'driver_support' is used uninitialized in this function [-Wuninitialized]
driver_support |= ENABLE_UNIT_ATTN;
^
This moves the #ifdef so only the prefetch-enable is conditional
on x86, not also reading the initial register contents.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Fixes: 28e134464734 "[SCSI] hpsa: enable unit attention reporting"
Acked-by: Stephen M. Cameron <scameron@beardog.cce.hp.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 89fb4cd1f717a871ef79fa7debbe840e3225cd54 upstream.
Flush commands don't transfer data and thus need to be special cased
in the I/O completion handler so that we can propagate errors to
the block layer and filesystem.
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Reported-by: Steven Haber <steven@qumulo.com>
Tested-by: Steven Haber <steven@qumulo.com>
Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit fd1232b214af43a973443aec6a2808f16ee5bf70 upstream.
This patch fixes I/O errors with the sym53c8xx_2 driver when the disk
returns QUEUE FULL status.
When the controller encounters an error (including QUEUE FULL or BUSY
status), it aborts all not yet submitted requests in the function
sym_dequeue_from_squeue.
This function aborts them with DID_SOFT_ERROR.
If the disk has full tag queue, the request that caused the overflow is
aborted with QUEUE FULL status (and the scsi midlayer properly retries
it until it is accepted by the disk), but the sym53c8xx_2 driver aborts
the following requests with DID_SOFT_ERROR --- for them, the midlayer
does just a few retries and then signals the error up to sd.
The result is that disk returning QUEUE FULL causes request failures.
The error was reproduced on 53c895 with COMPAQ BD03685A24 disk
(rebranded ST336607LC) with command queue 48 or 64 tags. The disk has
64 tags, but under some access patterns it return QUEUE FULL when there
are less than 64 pending tags. The SCSI specification allows returning
QUEUE FULL anytime and it is up to the host to retry.
Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Cc: Matthew Wilcox <matthew@wil.cx>
Cc: James Bottomley <JBottomley@Parallels.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 8faeb529b2dabb9df691d614dda18910a43d05c9 upstream.
Even though the virtio-scsi spec guarantees that all requests related
to the TMF will have been completed by the time the TMF itself completes,
the request queue's callback might not have run yet. This causes requests
to be completed more than once, and as a result triggers a variety of
BUGs or oopses.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Venkatesh Srinivas <venkateshs@google.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 8922a908908ff947f1f211e07e2e97f1169ad3cb upstream.
After scsi_try_to_abort_cmd returns, the eh_abort_handler may have
already found that the command has completed in the device, causing
the host_byte to be nonzero (e.g. it could be DID_ABORT). When
this happens, ORing DID_TIME_OUT into the host byte will corrupt
the result field and initiate an unwanted command retry.
Fix this by using set_host_byte instead, following the model of
commit 2082ebc45af9c9c648383b8cde0dc1948eadbf31.
Signed-off-by: Ulrich Obergfell <uobergfe@redhat.com>
[Fix all instances according to review comments. - Paolo]
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Ewan D. Milne <emilne@redhat.com>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit cdda0e5acbb78f7b777049f8c27899e5c5bb368f upstream.
Calling the workqueue interface on uninitialized work items isn't a
good idea even if they're zeroed. It's not failing catastrophically only
through happy accidents.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 7114aae02742d6b5c5a0d39a41deb61d415d3717 upstream.
Add a memory barrier prior to sending a new command to the VIOS
to ensure the VIOS does not receive stale data in the command buffer.
Also add a memory barrier when processing the CRQ for completed commands.
Signed-off-by: Brian King <brking@linux.vnet.ibm.com>
Acked-by: Nathan Fontenot <nfont@linux.vnet.ibm.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 9ee755974bea2f9880e517ec985dc9dede1b3a36 upstream.
If a CRQ reset is triggered for some reason while in the middle
of performing VSCSI adapter initialization, we don't want to
call the done function for the initialization MAD commands as
this will only result in two threads attempting initialization
at the same time, resulting in failures.
Signed-off-by: Brian King <brking@linux.vnet.ibm.com>
Acked-by: Nathan Fontenot <nfont@linux.vnet.ibm.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit d555a2abf3481f81303d835046a5ec2c4fb3ca8e upstream.
We unconditionally execute scsi_eh_get_sense() to make sure all failed
commands that should have sense attached, do. However, the routine forgets
that some commands, because of the way they fail, will not have any sense code
... we should not bother them with a REQUEST_SENSE command. Fix this by
testing to see if we actually got a CHECK_CONDITION return and skip asking for
sense if we don't.
Tested-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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[ Upstream commit 90f62cf30a78721641e08737bda787552428061e ]
It is possible by passing a netlink socket to a more privileged
executable and then to fool that executable into writing to the socket
data that happens to be valid netlink message to do something that
privileged executable did not intend to do.
To keep this from happening replace bare capable and ns_capable calls
with netlink_capable, netlink_net_calls and netlink_ns_capable calls.
Which act the same as the previous calls except they verify that the
opener of the socket had the desired permissions as well.
Reported-by: Andy Lutomirski <luto@amacapital.net>
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 6aa6caff30f5dcb9e55b03b9710c30b83750cae5 upstream.
The recent change in sysfs, bcdde7e221a8750f9b62b6d0bd31b72ea4ad9309
"sysfs: make __sysfs_remove_dir() recursive" revealed an asymmetric
rphy device creation/deletion sequence in scsi_transport_sas:
modprobe mpt2sas
sas_rphy_add
device_add A rphy->dev
device_add B sas_device transport class
device_add C sas_end_device transport class
device_add D bsg class
rmmod mpt2sas
sas_rphy_delete
sas_rphy_remove
device_del B
device_del C
device_del A
sysfs_remove_group recursive sysfs dir removal
sas_rphy_free
device_del D warning
where device A is the parent of B, C, and D.
When sas_rphy_free tries to unregister the bsg request queue (device D
above), the ensuing sysfs cleanup discovers that its sysfs group has
already been removed and emits a warning, "sysfs group... not found for
kobject 'end_device-X:0'".
Since bsg creation is a side effect of sas_rphy_add, move its
complementary removal call into sas_rphy_remove. This imposes the
following tear-down order for the devices above: D, B, C, A.
Note the sas_device and sas_end_device transport class devices (B and C
above) are created and destroyed both via the list match traversal in
attribute_container_device_trigger, so the order in which they are
handled is fixed. This is fine as long as they are deleted before their
parent device.
Signed-off-by: Joe Lawrence <joe.lawrence@stratus.com>
Acked-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 3de2260140417759c669d391613d583baf03b0cf upstream.
pthru32->dataxferlen comes from the user so we need to check that it's
not too large so we don't overflow the buffer.
Reported-by: Nico Golde <nico@ngolde.de>
Reported-by: Fabian Yamaguchi <fabs@goesec.de>
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-by: Sumit Saxena <sumit.saxena@lsi.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit f2495e228fce9f9cec84367547813cbb0d6db15a upstream.
In the highly unusual case where two threads are running concurrently through
the scanning code scanning the same target, we run into the situation where
one may allocate the target while the other is still using it. In this case,
because the reap checks for STARGET_CREATED and kills the target without
reference counting, the second thread will do the wrong thing on reap.
Fix this by reference counting even creates and doing the STARGET_CREATED
check in the final put.
Tested-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit e63ed0d7a98014fdfc2cfeb3f6dada313dcabb59 upstream.
This patch eliminates the reap_ref and replaces it with a proper kref.
On last put of this kref, the target is removed from visibility in
sysfs. The final call to scsi_target_reap() for the device is done from
__scsi_remove_device() and only if the device was made visible. This
ensures that the target disappears as soon as the last device is gone
rather than waiting until final release of the device (which is often
too long).
Reviewed-by: Alan Stern <stern@rowland.harvard.edu>
Tested-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit af61e27c3f77c7623b5335590ae24b6a5c323e22 upstream.
On suspend, _scsih_suspend calls mpt2sas_base_free_resources, which
in turn calls pci_disable_device if the device is enabled prior to
suspending. However, _scsih_suspend also calls pci_disable_device
itself.
Thus, in the event that the device is enabled prior to suspending,
pci_disable_device will be called twice. This patch removes the
duplicate call to pci_disable_device in _scsi_suspend as it is both
unnecessary and results in a kernel oops.
Signed-off-by: Tyler Stachecki <tstache1@binghamton.edu>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 0c8482ac92db5ac15792caf23b7f7df9e4f48ae1 upstream.
virtscsi_init calls virtscsi_remove_vqs on err, even before initializing
the vqs. The latter calls virtscsi_set_affinity, so let's check the
pointer there before setting affinity on it.
This fixes a panic when setting device's num_queues=2 on RHEL 6.5:
qemu-system-x86_64 ... \
-device virtio-scsi-pci,id=scsi0,addr=0x13,...,num_queues=2 \
-drive file=/stor/vm/dummy.raw,id=drive-scsi-disk,... \
-device scsi-hd,drive=drive-scsi-disk,...
[ 0.354734] scsi0 : Virtio SCSI HBA
[ 0.379504] BUG: unable to handle kernel NULL pointer dereference at 0000000000000020
[ 0.380141] IP: [<ffffffff814741ef>] __virtscsi_set_affinity+0x4f/0x120
[ 0.380141] PGD 0
[ 0.380141] Oops: 0000 [#1] SMP
[ 0.380141] CPU: 0 PID: 1 Comm: swapper/0 Not tainted 3.14.0+ #5
[ 0.380141] Hardware name: Red Hat KVM, BIOS 0.5.1 01/01/2007
[ 0.380141] task: ffff88003c9f0000 ti: ffff88003c9f8000 task.ti: ffff88003c9f8000
[ 0.380141] RIP: 0010:[<ffffffff814741ef>] [<ffffffff814741ef>] __virtscsi_set_affinity+0x4f/0x120
[ 0.380141] RSP: 0000:ffff88003c9f9c08 EFLAGS: 00010256
[ 0.380141] RAX: 0000000000000000 RBX: ffff88003c3a9d40 RCX: 0000000000001070
[ 0.380141] RDX: 0000000000000002 RSI: 0000000000000000 RDI: 0000000000000000
[ 0.380141] RBP: ffff88003c9f9c28 R08: 00000000000136c0 R09: ffff88003c801c00
[ 0.380141] R10: ffffffff81475229 R11: 0000000000000008 R12: 0000000000000000
[ 0.380141] R13: ffffffff81cc7ca8 R14: ffff88003cac3d40 R15: ffff88003cac37a0
[ 0.380141] FS: 0000000000000000(0000) GS:ffff88003e400000(0000) knlGS:0000000000000000
[ 0.380141] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b
[ 0.380141] CR2: 0000000000000020 CR3: 0000000001c0e000 CR4: 00000000000006f0
[ 0.380141] Stack:
[ 0.380141] ffff88003c3a9d40 0000000000000000 ffff88003cac3d80 ffff88003cac3d40
[ 0.380141] ffff88003c9f9c48 ffffffff814742e8 ffff88003c26d000 ffff88003c26d000
[ 0.380141] ffff88003c9f9c68 ffffffff81474321 ffff88003c26d000 ffff88003c3a9d40
[ 0.380141] Call Trace:
[ 0.380141] [<ffffffff814742e8>] virtscsi_set_affinity+0x28/0x40
[ 0.380141] [<ffffffff81474321>] virtscsi_remove_vqs+0x21/0x50
[ 0.380141] [<ffffffff81475231>] virtscsi_init+0x91/0x240
[ 0.380141] [<ffffffff81365290>] ? vp_get+0x50/0x70
[ 0.380141] [<ffffffff81475544>] virtscsi_probe+0xf4/0x280
[ 0.380141] [<ffffffff81363ea5>] virtio_dev_probe+0xe5/0x140
[ 0.380141] [<ffffffff8144c669>] driver_probe_device+0x89/0x230
[ 0.380141] [<ffffffff8144c8ab>] __driver_attach+0x9b/0xa0
[ 0.380141] [<ffffffff8144c810>] ? driver_probe_device+0x230/0x230
[ 0.380141] [<ffffffff8144c810>] ? driver_probe_device+0x230/0x230
[ 0.380141] [<ffffffff8144ac1c>] bus_for_each_dev+0x8c/0xb0
[ 0.380141] [<ffffffff8144c499>] driver_attach+0x19/0x20
[ 0.380141] [<ffffffff8144bf28>] bus_add_driver+0x198/0x220
[ 0.380141] [<ffffffff8144ce9f>] driver_register+0x5f/0xf0
[ 0.380141] [<ffffffff81d27c91>] ? spi_transport_init+0x79/0x79
[ 0.380141] [<ffffffff8136403b>] register_virtio_driver+0x1b/0x30
[ 0.380141] [<ffffffff81d27d19>] init+0x88/0xd6
[ 0.380141] [<ffffffff81d27c18>] ? scsi_init_procfs+0x5b/0x5b
[ 0.380141] [<ffffffff81ce88a7>] do_one_initcall+0x7f/0x10a
[ 0.380141] [<ffffffff81ce8aa7>] kernel_init_freeable+0x14a/0x1de
[ 0.380141] [<ffffffff81ce8b3b>] ? kernel_init_freeable+0x1de/0x1de
[ 0.380141] [<ffffffff817dec20>] ? rest_init+0x80/0x80
[ 0.380141] [<ffffffff817dec29>] kernel_init+0x9/0xf0
[ 0.380141] [<ffffffff817e68fc>] ret_from_fork+0x7c/0xb0
[ 0.380141] [<ffffffff817dec20>] ? rest_init+0x80/0x80
[ 0.380141] RIP [<ffffffff814741ef>] __virtscsi_set_affinity+0x4f/0x120
[ 0.380141] RSP <ffff88003c9f9c08>
[ 0.380141] CR2: 0000000000000020
[ 0.380141] ---[ end trace 8074b70c3d5e1d73 ]---
[ 0.475018] Kernel panic - not syncing: Attempted to kill init! exitcode=0x00000009
[ 0.475018]
[ 0.475068] Kernel Offset: 0x0 from 0xffffffff81000000 (relocation range: 0xffffffff80000000-0xffffffff9fffffff)
[ 0.475068] ---[ end Kernel panic - not syncing: Attempted to kill init! exitcode=0x00000009
[jejb: checkpatch fixes]
Signed-off-by: Fam Zheng <famz@redhat.com>
Acked-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit e2c70425f05219b142b3a8a9489a622c736db39d upstream.
The original code always set the upper 32 bits to zero because it was
doing a shift of the wrong variable.
Fixes: 1a4f550a09f8 ('[SCSI] arcmsr: 1.20.00.15: add SATA RAID plus other fixes')
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit b2a72ec32d0f499aaadf41264232517a12326df0 upstream.
qla2x00_mem_alloc() returns 1 on success and -ENOMEM on failure. On the
one hand the caller assumes non-zero is success but on the other hand
the caller also assumes that it returns an error code.
I've fixed it to return zero on success and a negative error code on
failure. This matches the documentation as well.
[jejb: checkpatch fix]
Fixes: e315cd28b9ef ('[SCSI] qla2xxx: Code changes for qla data structure refactoring')
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-by: Saurav Kashyap <saurav.kashyap@qlogic.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 7aae51347b21eb738dc1981df1365b57a6c5ee4e upstream.
Evidently some wacky USB-ATA bridges don't recognize the SYNCHRONIZE
CACHE command, as shown in this email thread:
http://marc.info/?t=138978356200002&r=1&w=2
The fact that we can't tell them to drain their caches shouldn't
prevent the system from going into suspend. Therefore sd_sync_cache()
shouldn't return an error if the device replies with an Invalid
Command ASC.
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Reported-by: Sven Neumann <s.neumann@raumfeld.com>
Tested-by: Daniel Mack <zonque@gmail.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Pull networking fixes from David Miller:
1) OpenVswitch's lookup_datapath() returns error pointers, so don't
check against NULL. From Jiri Pirko.
2) pfkey_compile_policy() code path tries to do a GFP_KERNEL allocation
under RCU locks, fix by using GFP_ATOMIC when necessary. From
Nikolay Aleksandrov.
3) phy_suspend() indirectly passes uninitialized data into the ethtool
get wake-on-land implementations. Fix from Sebastian Hesselbarth.
4) CPSW driver unregisters CPTS twice, fix from Benedikt Spranger.
5) If SKB allocation of reply packet fails, vxlan's arp_reduce() defers
a NULL pointer. Fix from David Stevens.
6) IPV6 neigh handling in vxlan doesn't validate the destination
address properly, and it builds a packet with the src and dst
reversed. Fix also from David Stevens.
7) Fix spinlock recursion during subscription failures in TIPC stack,
from Erik Hugne.
8) Revert buggy conversion of davinci_emac to devm_request_irq, from
Chrstian Riesch.
9) Wrong flags passed into forwarding database netlink notifications,
from Nicolas Dichtel.
10) The netpoll neighbour soliciation handler checks wrong ethertype,
needs to be ETH_P_IPV6 rather than ETH_P_ARP. Fix from Li RongQing.
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (34 commits)
tipc: fix spinlock recursion bug for failed subscriptions
vxlan: fix nonfunctional neigh_reduce()
net: davinci_emac: Fix rollback of emac_dev_open()
net: davinci_emac: Replace devm_request_irq with request_irq
netpoll: fix the skb check in pkt_is_ns
net: micrel : ks8851-ml: add vdd-supply support
ip6mr: fix mfc notification flags
ipmr: fix mfc notification flags
rtnetlink: fix fdb notification flags
tcp: syncookies: do not use getnstimeofday()
netlink: fix setsockopt in mmap examples in documentation
openvswitch: Correctly report flow used times for first 5 minutes after boot.
via-rhine: Disable device in error path
ATHEROS-ATL1E: Convert iounmap to pci_iounmap
vxlan: fix potential NULL dereference in arp_reduce()
cnic: Update version to 2.5.20 and copyright year.
cnic,bnx2i,bnx2fc: Fix inconsistent use of page size
cnic: Use proper ulp_ops for per device operations.
net: cdc_ncm: fix control message ordering
ipv6: ip6_append_data_mtu do not handle the mtu of the second fragment properly
...
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The bnx2/bnx2x rings are made up of linked pages. However there is an
upper limit on the page size as some the page size settings are 16-bit
in the hardware/firmware interface. In the current code, some parts
use BNX2_PAGE_SIZE which has a 16K upper limit and some parts use
PAGE_SIZE. On archs with >= 64K PAGE_SIZE, it generates some compile
warnings. Define a new CNIC_PAGE_SZIE which has an upper limit of
16K and use it consistently in all relevant parts.
Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: Eddie Wai <eddie.wai@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi
Pull SCSI fixes from James Bottomley:
"This is a set of six fixes. Two are instant crash/null deref types
(storvsc and isci). The two qla2xxx are initialisation problems that
cause MSI-X failures and card misdetection, the isci erroneous macro
is actually illegal C that's causing a miscompile with certain gcc
versions and the be2iscsi bad if expression is a static checker fix"
* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
[SCSI] storvsc: NULL pointer dereference fix
[SCSI] qla2xxx: Poll during initialization for ISP25xx and ISP83xx
[SCSI] isci: correct erroneous for_each_isci_host macro
[SCSI] isci: fix reset timeout handling
[SCSI] be2iscsi: fix bad if expression
[SCSI] qla2xxx: Fix multiqueue MSI-X registration.
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If the initialization of storvsc fails, the storvsc_device_destroy()
causes NULL pointer dereference.
storvsc_bus_scan()
scsi_scan_target()
__scsi_scan_target()
scsi_probe_and_add_lun(hostdata=NULL)
scsi_alloc_sdev(hostdata=NULL)
sdev->hostdata = hostdata
now the host allocation fails
__scsi_remove_device(sdev)
calls sdev->host->hostt->slave_destroy() ==
storvsc_device_destroy(sdev)
access of sdev->hostdata->request_mempool
Signed-off-by: Ales Novak <alnovak@suse.cz>
Signed-off-by: Thomas Abraham <tabraham@suse.com>
Reviewed-by: Jiri Kosina <jkosina@suse.cz>
Acked-by: K. Y. Srinivasan <kys@microsoft.com>
Cc: stable@vger.kernel.org
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
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Cc: stable@vger.kernel.org
Signed-off-by: Giridhar Malavali <giridhar.malavali@qlogic.com>
Signed-off-by: Saurav Kashyap <saurav.kashyap@qlogic.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
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In the first place, the loop 'for' in the macro 'for_each_isci_host'
(drivers/scsi/isci/host.h:314) is incorrect, because it accesses
the 3rd element of 2 element array. After the 2nd iteration it executes
the instruction:
ihost = to_pci_info(pdev)->hosts[2]
(while the size of the 'hosts' array equals 2) and reads an
out of range element.
In the second place, this loop is incorrectly optimized by GCC v4.8
(see http://marc.info/?l=linux-kernel&m=138998871911336&w=2).
As a result, on platforms with two SCU controllers,
the loop is executed more times than it can be (for i=0,1 and 2).
It causes kernel panic during entering the S3 state
and the following oops after 'rmmod isci':
BUG: unable to handle kernel NULL pointer dereference at (null)
IP: [<ffffffff8131360b>] __list_add+0x1b/0xc0
Oops: 0000 [#1] SMP
RIP: 0010:[<ffffffff8131360b>] [<ffffffff8131360b>] __list_add+0x1b/0xc0
Call Trace:
[<ffffffff81661b84>] __mutex_lock_slowpath+0x114/0x1b0
[<ffffffff81661c3f>] mutex_lock+0x1f/0x30
[<ffffffffa03e97cb>] sas_disable_events+0x1b/0x50 [libsas]
[<ffffffffa03e9818>] sas_unregister_ha+0x18/0x60 [libsas]
[<ffffffffa040316e>] isci_unregister+0x1e/0x40 [isci]
[<ffffffffa0403efd>] isci_pci_remove+0x5d/0x100 [isci]
[<ffffffff813391cb>] pci_device_remove+0x3b/0xb0
[<ffffffff813fbf7f>] __device_release_driver+0x7f/0xf0
[<ffffffff813fc8f8>] driver_detach+0xa8/0xb0
[<ffffffff813fbb8b>] bus_remove_driver+0x9b/0x120
[<ffffffff813fcf2c>] driver_unregister+0x2c/0x50
[<ffffffff813381f3>] pci_unregister_driver+0x23/0x80
[<ffffffffa04152f8>] isci_exit+0x10/0x1e [isci]
[<ffffffff810d199b>] SyS_delete_module+0x16b/0x2d0
[<ffffffff81012a21>] ? do_notify_resume+0x61/0xa0
[<ffffffff8166ce29>] system_call_fastpath+0x16/0x1b
The loop has been corrected.
This patch fixes kernel panic during entering the S3 state
and the above oops.
Signed-off-by: Lukasz Dorau <lukasz.dorau@intel.com>
Reviewed-by: Maciej Patelczyk <maciej.patelczyk@intel.com>
Tested-by: Lukasz Dorau <lukasz.dorau@intel.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
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Remove an erroneous BUG_ON() in the case of a hard reset timeout. The
reset timeout handler puts the port into the "awaiting link-up" state.
The timeout causes the device to be disconnected and we need to be in
the awaiting link-up state to re-connect the port. The BUG_ON() made
the incorrect assumption that resets never timeout and we always
complete the reset in the "resetting" state.
Testing this patch also uncovered that libata continues to attempt to
reset the port long after the driver has torn down the context. Once
the driver has committed to abandoning the link it must indicate to
libata that recovery ends by returning -ENODEV from
->lldd_I_T_nexus_reset().
Cc: <stable@vger.kernel.org>
Acked-by: Lukasz Dorau <lukasz.dorau@intel.com>
Reported-by: David Milburn <dmilburn@redhat.com>
Reported-by: Xun Ni <xun.ni@intel.com>
Tested-by: Xun Ni <xun.ni@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
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https://bugzilla.kernel.org/show_bug.cgi?id=67091
Cc: Jayamohan Kallickal <Jayamohan.Kallickal@emulex.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
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This fixes requesting of the MSI-X vectors for the base response queue.
The iteration in the for loop in qla24xx_enable_msix() was incorrect.
We should only iterate of the first two MSI-X vectors and not the total
number of MSI-X vectors that have given to the driver for this device
from pci_enable_msix() in this function.
Cc: <stable@vger.kernel.org>
Signed-off-by: Chad Dupuis <chad.dupuis@qlogic.com>
Signed-off-by: Saurav Kashyap <saurav.kashyap@qlogic.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
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Pull SCSI target fixes from Nicholas Bellinger:
"The bulk of the series are bugfixes for qla2xxx target NPIV support
that went in for v3.14-rc1. Also included are a few DIF related
fixes, a qla2xxx fix (Cc'ed to stable) from Greg W., and vhost/scsi
protocol version related fix from Venkatesh.
Also just a heads up that a series to address a number of issues with
iser-target active I/O reset/shutdown is still being tested, and will
be included in a separate -rc6 PULL request"
* git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending:
vhost/scsi: Check LUN structure byte 0 is set to 1, per spec
qla2xxx: Fix kernel panic on selective retransmission request
Target/sbc: Don't use sg as iterator in sbc_verify_read
target: Add DIF sense codes in transport_generic_request_failure
target/sbc: Fix sbc_dif_copy_prot addr offset bug
tcm_qla2xxx: Fix NAA formatted name for NPIV WWPNs
tcm_qla2xxx: Perform configfs depend/undepend for base_tpg
tcm_qla2xxx: Add NPIV specific enable/disable attribute logic
qla2xxx: Check + fail when npiv_vports_inuse exists in shutdown
qla2xxx: Fix qlt_lport_register base_vha callback race
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