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git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi
Pull SCSI fixes from James Bottomley:
"Two more important data integrity fixes related to RAID device drivers
which wrongly throw away the SYNCHRONIZE CACHE command in the non-RAID
path and a memory leak in the scsi_debug driver"
* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
scsi: arcmsr: Send SYNCHRONIZE_CACHE command to firmware
scsi: scsi_debug: Fix memory leak if LBP enabled and module is unloaded
scsi: megaraid_sas: Fix data integrity failure for JBOD (passthrough) devices
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The arcmsr driver failed to pass SYNCHRONIZE CACHE to controller
firmware. Depending on how drive caches are handled internally by
controller firmware this could potentially lead to data integrity
problems.
Ensure that cache flushes are passed to the controller.
[mkp: applied by hand and removed unused vars]
Cc: <stable@vger.kernel.org>
Signed-off-by: Ching Huang <ching2048@areca.com.tw>
Reported-by: Tomas Henzl <thenzl@redhat.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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map_storep was not being vfree()'d in the module_exit call.
Cc: <stable@vger.kernel.org>
Signed-off-by: Ewan D. Milne <emilne@redhat.com>
Reviewed-by: Laurence Oberman <loberman@redhat.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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Commit 02b01e010afe ("megaraid_sas: return sync cache call with
success") modified the driver to successfully complete SYNCHRONIZE_CACHE
commands without passing them to the controller. Disk drive caches are
only explicitly managed by controller firmware when operating in RAID
mode. So this commit effectively disabled writeback cache flushing for
any drives used in JBOD mode, leading to data integrity failures.
[mkp: clarified patch description]
Fixes: 02b01e010afeeb49328d35650d70721d2ca3fd59
CC: stable@vger.kernel.org
Signed-off-by: Kashyap Desai <kashyap.desai@broadcom.com>
Signed-off-by: Sumit Saxena <sumit.saxena@broadcom.com>
Reviewed-by: Tomas Henzl <thenzl@redhat.com>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Reviewed-by: Ewan D. Milne <emilne@redhat.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi
Pull SCSI fixes from James Bottomley:
"Two small fixes: one is a fatal section mismatch (reference to init
after it's discarded) and the other two are iscsi locking fixes"
* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
scsi: NCR5380: no longer mark irq probing as __init
scsi: be2iscsi: Replace _bh with _irqsave/irqrestore
scsi: libiscsi: Fix locking in __iscsi_conn_send_pdu
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The g_NCR5380 has been converted to more regular probing, which
means its probe function can now be invoked after the __init section
is discarded, as pointed out by this kbuild warning:
WARNING: drivers/scsi/built-in.o(.text+0x3a105): Section mismatch in reference from the function generic_NCR5380_isa_match() to the function .init.text:probe_intr()
WARNING: drivers/scsi/built-in.o(.text+0x3a145): Section mismatch in reference from the function generic_NCR5380_isa_match() to the variable .init.data:probe_irq
To make sure this works correctly in all cases, let's remove
the __init and __initdata annotations.
Fixes: a8cfbcaec0c1 ("scsi: g_NCR5380: Stop using scsi_module.c")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Finn Thain <fthain@telegraphics.com.au>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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[ 3843.132217] WARNING: CPU: 20 PID: 1227 at kernel/softirq.c:150 __local_bh_enable_ip+0x6b/0x90
[ 3843.142815] Modules linked in:
...
[ 3843.294328] CPU: 20 PID: 1227 Comm: kworker/20:1H Tainted: G E 4.8.0-rc1+ #3
[ 3843.304944] Hardware name: Dell Inc. PowerEdge R720/0X6H47, BIOS 1.4.8 10/25/2012
[ 3843.314798] Workqueue: kblockd blk_timeout_work
[ 3843.321350] 0000000000000086 00000000a32f4533 ffff8802216d7bd8 ffffffff8135c3cf
[ 3843.331146] 0000000000000000 0000000000000000 ffff8802216d7c18 ffffffff8108d661
[ 3843.340918] 00000096216d7c50 0000000000000200 ffff8802d07cc828 ffff8801b3632550
[ 3843.350687] Call Trace:
[ 3843.354866] [<ffffffff8135c3cf>] dump_stack+0x63/0x84
[ 3843.362061] [<ffffffff8108d661>] __warn+0xd1/0xf0
[ 3843.368851] [<ffffffff8108d79d>] warn_slowpath_null+0x1d/0x20
[ 3843.376791] [<ffffffff810930eb>] __local_bh_enable_ip+0x6b/0x90
[ 3843.384903] [<ffffffff816fe7be>] _raw_spin_unlock_bh+0x1e/0x20
[ 3843.392940] [<ffffffffa085f710>] beiscsi_alloc_pdu+0x2f0/0x6e0 [be2iscsi]
[ 3843.402076] [<ffffffffa06bc358>] __iscsi_conn_send_pdu+0xf8/0x370 [libiscsi]
[ 3843.411549] [<ffffffffa06bc6fe>] iscsi_send_nopout+0xbe/0x110 [libiscsi]
[ 3843.420639] [<ffffffffa06bd98b>] iscsi_eh_cmd_timed_out+0x29b/0x2b0 [libiscsi]
[ 3843.430339] [<ffffffff814cd1de>] scsi_times_out+0x5e/0x250
[ 3843.438119] [<ffffffff813374af>] blk_rq_timed_out+0x1f/0x60
[ 3843.446009] [<ffffffff8133759d>] blk_timeout_work+0xad/0x150
[ 3843.454010] [<ffffffff810a6642>] process_one_work+0x152/0x400
[ 3843.462114] [<ffffffff810a6f35>] worker_thread+0x125/0x4b0
[ 3843.469961] [<ffffffff810a6e10>] ? rescuer_thread+0x380/0x380
[ 3843.478116] [<ffffffff810aca28>] kthread+0xd8/0xf0
[ 3843.485212] [<ffffffff816fedff>] ret_from_fork+0x1f/0x40
[ 3843.492908] [<ffffffff810ac950>] ? kthread_park+0x60/0x60
[ 3843.500715] ---[ end trace 57ec0a1d8f0dd3a0 ]---
[ 3852.328667] NMI watchdog: Watchdog detected hard LOCKUP on cpu 1Kernel panic - not syncing: Hard LOCKUP
blk_timeout_work takes queue_lock spin_lock with interrupts disabled
before invoking iscsi_eh_cmd_timed_out. This causes a WARN_ON_ONCE in
spin_unlock_bh for wrb_lock/io_sgl_lock/mgmt_sgl_lock.
CPU was kept busy in lot of bottom half work with interrupts disabled
thus causing hard lock up.
Signed-off-by: Jitendra Bhivare <jitendra.bhivare@broadcom.com>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Reviewed-by: Chris Leech <cleech@redhat.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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The code at free_task label in __iscsi_conn_send_pdu can get executed
from blk_timeout_work which takes queue_lock using spin_lock_irq.
back_lock taken with spin_unlock_bh will cause WARN_ON_ONCE. The code
gets executed either with bottom half or IRQ disabled hence using
spin_lock/spin_unlock for back_lock is safe.
Signed-off-by: Jitendra Bhivare <jitendra.bhivare@broadcom.com>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Reviewed-by: Chris Leech <cleech@redhat.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi
Pull SCSI fixes from James Bottomley:
"Five small fixes.
Some of these, like the nested spinlock overwriting saved flags and
the Kasan use after free look serious, but they seem not to have been
picked up in testing or seen in the field.
The biggest user visible issue is probably the wrong device handler
for Clariion, which means that alua doesn't bind to the array like it
should"
* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
scsi: ipr: Fix async error WARN_ON
scsi: zfcp: spin_lock_irqsave() is not nestable
scsi: Remove one useless stack variable
scsi: Fix use-after-free
scsi: Replace wrong device handler name for CLARiiON arrays
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Commit afc3f83cb4a5 ("scsi: ipr: Add asynchronous error notification")
introduced the warn on shown below. To fix this, rather than attempting
to send the KOBJ_CHANGE uevent from interrupt context, which is what is
causing the WARN_ON, just wake the ipr worker thread which will send a
KOBJ_CHANGE uevent.
[ 142.278120] WARNING: CPU: 15 PID: 0 at kernel/softirq.c:161 __local_bh_enable_ip+0x7c/0xd0
[ 142.278124] Modules linked in: ip6t_rpfilter ip6t_REJECT nf_reject_ipv6 ipt_REJECT nf_reject_ipv4 xt_conntrack ebtable_nat ebtable_broute bridge stp llc ebtable_filter ebtables ip6table_nat nf_conntrack_ipv6 nf_defrag_ipv6 nf_nat_ipv6 ip6table_mangle ip6table_security ip6table_raw ip6table_filter ip6_tables iptable_nat nf_conntrack_ipv4 nf_defrag_ipv4 nf_nat_ipv4 nf_nat nf_conntrack iptable_mangle iptable_security iptable_raw iptable_filter ses enclosure scsi_transport_sas sg pseries_rng nfsd auth_rpcgss nfs_acl lockd grace sunrpc ip_tables xfs libcrc32c sr_mod sd_mod cdrom ipr libata ibmvscsi scsi_transport_srp ibmveth dm_mirror dm_region_hash dm_log dm_mod
[ 142.278208] CPU: 15 PID: 0 Comm: swapper/15 Not tainted 4.8.0.ipr+ #21
[ 142.278213] task: c00000010cf24480 task.stack: c00000010cfec000
[ 142.278217] NIP: c0000000000c0c7c LR: c000000000881778 CTR: c0000000003c5bf0
[ 142.278221] REGS: c00000010cfef080 TRAP: 0700 Not tainted (4.8.0.ipr+)
[ 142.278224] MSR: 8000000000029033 <SF,EE,ME,IR,DR,RI,LE> CR: 28008022 XER: 2000000f
[ 142.278236] CFAR: c0000000000c0c20 SOFTE: 0
GPR00: c000000000706c78 c00000010cfef300 c000000000f91d00 c000000000706c78
GPR04: 0000000000000200 c000000000f7bc80 0000000000000000 00000000024000c0
GPR08: 0000000000000000 0000000000000001 c000000000ee1d00 c000000000a9bdd0
GPR12: c0000000003c5bf0 c00000000eb22d00 c000000100ca3880 c00000020ed38400
GPR16: 0000000000000000 0000000000000000 c000000100940508 0000000000000000
GPR20: 0000000000000000 0000000000000000 0000000000000000 00000000024000c0
GPR24: c0000000004588e0 c00000010863bd00 c00000010863bd00 c0000000013773f8
GPR28: c000000000f7bc80 0000000000000000 ffffffffffffffff c000000000f7bcd8
[ 142.278290] NIP [c0000000000c0c7c] __local_bh_enable_ip+0x7c/0xd0
[ 142.278296] LR [c000000000881778] _raw_spin_unlock_bh+0x38/0x60
[ 142.278299] Call Trace:
[ 142.278303] [c00000010cfef300] [c000000000f7bc80] init_net+0x0/0x1900 (unreliable)
[ 142.278310] [c00000010cfef320] [c000000000706c78] peernet2id+0x58/0x80
[ 142.278316] [c00000010cfef370] [c00000000075caec] netlink_broadcast_filtered+0x30c/0x550
[ 142.278323] [c00000010cfef430] [c000000000459078] kobject_uevent_env+0x588/0x780
[ 142.278331] [c00000010cfef510] [d000000003163a6c] ipr_process_error+0x11c/0x240 [ipr]
[ 142.278337] [c00000010cfef5c0] [d000000003152298] ipr_fail_all_ops+0x108/0x220 [ipr]
[ 142.278343] [c00000010cfef670] [d0000000031643f8] ipr_reset_restore_cfg_space+0xa8/0x240 [ipr]
[ 142.278350] [c00000010cfef6f0] [d000000003158a00] ipr_reset_ioa_job+0x80/0xe0 [ipr]
[ 142.278356] [c00000010cfef720] [d000000003153f78] ipr_reset_timer_done+0xa8/0xe0 [ipr]
[ 142.278363] [c00000010cfef770] [c000000000149c88] call_timer_fn+0x58/0x1c0
[ 142.278368] [c00000010cfef800] [c000000000149f60] expire_timers+0x140/0x200
[ 142.278373] [c00000010cfef870] [c00000000014a0e8] run_timer_softirq+0xc8/0x230
[ 142.278379] [c00000010cfef900] [c0000000000c0844] __do_softirq+0x164/0x3c0
[ 142.278384] [c00000010cfef9f0] [c0000000000c0f18] irq_exit+0x1a8/0x1c0
[ 142.278389] [c00000010cfefa20] [c000000000020b54] timer_interrupt+0xa4/0xe0
[ 142.278394] [c00000010cfefa50] [c000000000002414] decrementer_common+0x114/0x180
Signed-off-by: Brian King <brking@linux.vnet.ibm.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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The local variable of 'devname' in scsi_report_lun_scan() isn't used any
more, so remove it.
Cc: Christoph Hellwig <hch@lst.de>
Signed-off-by: Ming Lei <tom.leiming@gmail.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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This patch fixes one use-after-free report[1] by KASAN.
In __scsi_scan_target(), when a type 31 device is probed,
SCSI_SCAN_TARGET_PRESENT is returned and the target will be scanned
again.
Inside the following scsi_report_lun_scan(), one new scsi_device
instance is allocated, and scsi_probe_and_add_lun() is called again to
probe the target and still see type 31 device, finally
__scsi_remove_device() is called to remove & free the device at the end
of scsi_probe_and_add_lun(), so cause use-after-free in
scsi_report_lun_scan().
And the following SCSI log can be observed:
scsi 0:0:2:0: scsi scan: INQUIRY pass 1 length 36
scsi 0:0:2:0: scsi scan: INQUIRY successful with code 0x0
scsi 0:0:2:0: scsi scan: peripheral device type of 31, no device added
scsi 0:0:2:0: scsi scan: Sending REPORT LUNS to (try 0)
scsi 0:0:2:0: scsi scan: REPORT LUNS successful (try 0) result 0x0
scsi 0:0:2:0: scsi scan: REPORT LUN scan
scsi 0:0:2:0: scsi scan: INQUIRY pass 1 length 36
scsi 0:0:2:0: scsi scan: INQUIRY successful with code 0x0
scsi 0:0:2:0: scsi scan: peripheral device type of 31, no device added
BUG: KASAN: use-after-free in __scsi_scan_target+0xbf8/0xe40 at addr ffff88007b44a104
This patch fixes the issue by moving the putting reference at
the end of scsi_report_lun_scan().
[1] KASAN report
==================================================================
[ 3.274597] PM: Adding info for serio:serio1
[ 3.275127] BUG: KASAN: use-after-free in __scsi_scan_target+0xd87/0xdf0 at addr ffff880254d8c304
[ 3.275653] Read of size 4 by task kworker/u10:0/27
[ 3.275903] CPU: 3 PID: 27 Comm: kworker/u10:0 Not tainted 4.8.0 #2121
[ 3.276258] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS Ubuntu-1.8.2-1ubuntu1 04/01/2014
[ 3.276797] Workqueue: events_unbound async_run_entry_fn
[ 3.277083] ffff880254d8c380 ffff880259a37870 ffffffff94bbc6c1 ffff880078402d80
[ 3.277532] ffff880254d8bb80 ffff880259a37898 ffffffff9459fec1 ffff880259a37930
[ 3.277989] ffff880254d8bb80 ffff880078402d80 ffff880259a37920 ffffffff945a0165
[ 3.278436] Call Trace:
[ 3.278528] [<ffffffff94bbc6c1>] dump_stack+0x65/0x84
[ 3.278797] [<ffffffff9459fec1>] kasan_object_err+0x21/0x70
[ 3.279063] device: 'psaux': device_add
[ 3.279616] [<ffffffff945a0165>] kasan_report_error+0x205/0x500
[ 3.279651] PM: Adding info for No Bus:psaux
[ 3.280202] [<ffffffff944ecd22>] ? kfree_const+0x22/0x30
[ 3.280486] [<ffffffff94bc2dc9>] ? kobject_release+0x119/0x370
[ 3.280805] [<ffffffff945a0543>] __asan_report_load4_noabort+0x43/0x50
[ 3.281170] [<ffffffff9507e1f7>] ? __scsi_scan_target+0xd87/0xdf0
[ 3.281506] [<ffffffff9507e1f7>] __scsi_scan_target+0xd87/0xdf0
[ 3.281848] [<ffffffff9507d470>] ? scsi_add_device+0x30/0x30
[ 3.282156] [<ffffffff94f7f660>] ? pm_runtime_autosuspend_expiration+0x60/0x60
[ 3.282570] [<ffffffff956ddb07>] ? _raw_spin_lock+0x17/0x40
[ 3.282880] [<ffffffff9507e505>] scsi_scan_channel+0x105/0x160
[ 3.283200] [<ffffffff9507e8a2>] scsi_scan_host_selected+0x212/0x2f0
[ 3.283563] [<ffffffff9507eb3c>] do_scsi_scan_host+0x1bc/0x250
[ 3.283882] [<ffffffff9507efc1>] do_scan_async+0x41/0x450
[ 3.284173] [<ffffffff941c1fee>] async_run_entry_fn+0xfe/0x610
[ 3.284492] [<ffffffff941a8954>] ? pwq_dec_nr_in_flight+0x124/0x2a0
[ 3.284876] [<ffffffff941d1770>] ? preempt_count_add+0x130/0x160
[ 3.285207] [<ffffffff941a9a84>] process_one_work+0x544/0x12d0
[ 3.285526] [<ffffffff941aa8e9>] worker_thread+0xd9/0x12f0
[ 3.285844] [<ffffffff941aa810>] ? process_one_work+0x12d0/0x12d0
[ 3.286182] [<ffffffff941bb365>] kthread+0x1c5/0x260
[ 3.286443] [<ffffffff940855cd>] ? __switch_to+0x88d/0x1430
[ 3.286745] [<ffffffff941bb1a0>] ? kthread_worker_fn+0x5a0/0x5a0
[ 3.287085] [<ffffffff956dde9f>] ret_from_fork+0x1f/0x40
[ 3.287368] [<ffffffff941bb1a0>] ? kthread_worker_fn+0x5a0/0x5a0
[ 3.287697] Object at ffff880254d8bb80, in cache kmalloc-2048 size: 2048
[ 3.288064] Allocated:
[ 3.288147] PID = 27
[ 3.288218] [<ffffffff940b27ab>] save_stack_trace+0x2b/0x50
[ 3.288531] [<ffffffff9459f246>] save_stack+0x46/0xd0
[ 3.288806] [<ffffffff9459f4bd>] kasan_kmalloc+0xad/0xe0
[ 3.289098] [<ffffffff9459c07e>] __kmalloc+0x13e/0x250
[ 3.289378] [<ffffffff95078e5a>] scsi_alloc_sdev+0xea/0xcf0
[ 3.289701] [<ffffffff9507de76>] __scsi_scan_target+0xa06/0xdf0
[ 3.290034] [<ffffffff9507e505>] scsi_scan_channel+0x105/0x160
[ 3.290362] [<ffffffff9507e8a2>] scsi_scan_host_selected+0x212/0x2f0
[ 3.290724] [<ffffffff9507eb3c>] do_scsi_scan_host+0x1bc/0x250
[ 3.291055] [<ffffffff9507efc1>] do_scan_async+0x41/0x450
[ 3.291354] [<ffffffff941c1fee>] async_run_entry_fn+0xfe/0x610
[ 3.291695] [<ffffffff941a9a84>] process_one_work+0x544/0x12d0
[ 3.292022] [<ffffffff941aa8e9>] worker_thread+0xd9/0x12f0
[ 3.292325] [<ffffffff941bb365>] kthread+0x1c5/0x260
[ 3.292594] [<ffffffff956dde9f>] ret_from_fork+0x1f/0x40
[ 3.292886] Freed:
[ 3.292945] PID = 27
[ 3.293016] [<ffffffff940b27ab>] save_stack_trace+0x2b/0x50
[ 3.293327] [<ffffffff9459f246>] save_stack+0x46/0xd0
[ 3.293600] [<ffffffff9459fa61>] kasan_slab_free+0x71/0xb0
[ 3.293916] [<ffffffff9459bac2>] kfree+0xa2/0x1f0
[ 3.294168] [<ffffffff9508158a>] scsi_device_dev_release_usercontext+0x50a/0x730
[ 3.294598] [<ffffffff941ace9a>] execute_in_process_context+0xda/0x130
[ 3.294974] [<ffffffff9508107c>] scsi_device_dev_release+0x1c/0x20
[ 3.295322] [<ffffffff94f566f6>] device_release+0x76/0x1e0
[ 3.295626] [<ffffffff94bc2db7>] kobject_release+0x107/0x370
[ 3.295942] [<ffffffff94bc29ce>] kobject_put+0x4e/0xa0
[ 3.296222] [<ffffffff94f56e17>] put_device+0x17/0x20
[ 3.296497] [<ffffffff9505201c>] scsi_device_put+0x7c/0xa0
[ 3.296801] [<ffffffff9507e1bc>] __scsi_scan_target+0xd4c/0xdf0
[ 3.297132] [<ffffffff9507e505>] scsi_scan_channel+0x105/0x160
[ 3.297458] [<ffffffff9507e8a2>] scsi_scan_host_selected+0x212/0x2f0
[ 3.297829] [<ffffffff9507eb3c>] do_scsi_scan_host+0x1bc/0x250
[ 3.298156] [<ffffffff9507efc1>] do_scan_async+0x41/0x450
[ 3.298453] [<ffffffff941c1fee>] async_run_entry_fn+0xfe/0x610
[ 3.298777] [<ffffffff941a9a84>] process_one_work+0x544/0x12d0
[ 3.299105] [<ffffffff941aa8e9>] worker_thread+0xd9/0x12f0
[ 3.299408] [<ffffffff941bb365>] kthread+0x1c5/0x260
[ 3.299676] [<ffffffff956dde9f>] ret_from_fork+0x1f/0x40
[ 3.299967] Memory state around the buggy address:
[ 3.300209] ffff880254d8c200: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 3.300608] ffff880254d8c280: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 3.300986] >ffff880254d8c300: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 3.301408] ^
[ 3.301550] ffff880254d8c380: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[ 3.301987] ffff880254d8c400: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
[ 3.302396]
==================================================================
Cc: Christoph Hellwig <hch@lst.de>
Cc: stable@vger.kernel.org
Signed-off-by: Ming Lei <tom.leiming@gmail.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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At drivers/scsi/device_handler/scsi_dh_emc.c it was defined as:
Cc: Christoph Hellwig <hch@lst.de>
Cc: Hannes Reinecke <hare@suse.de>
Cc: Christophe Varoqui <christophe.varoqui@opensvc.com>
Cc: James E.J. Bottomley <jejb@linux.vnet.ibm.com>
Cc: Martin K. Petersen <martin.petersen@oracle.com>
Cc: SCSI ML <linux-scsi@vger.kernel.org>
Cc: device-mapper development <dm-devel@redhat.com>
Signed-off-by: Xose Vazquez Perez <xose.vazquez@gmail.com>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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Merge the gup_flags cleanups from Lorenzo Stoakes:
"This patch series adjusts functions in the get_user_pages* family such
that desired FOLL_* flags are passed as an argument rather than
implied by flags.
The purpose of this change is to make the use of FOLL_FORCE explicit
so it is easier to grep for and clearer to callers that this flag is
being used. The use of FOLL_FORCE is an issue as it overrides missing
VM_READ/VM_WRITE flags for the VMA whose pages we are reading
from/writing to, which can result in surprising behaviour.
The patch series came out of the discussion around commit 38e088546522
("mm: check VMA flags to avoid invalid PROT_NONE NUMA balancing"),
which addressed a BUG_ON() being triggered when a page was faulted in
with PROT_NONE set but having been overridden by FOLL_FORCE.
do_numa_page() was run on the assumption the page _must_ be one marked
for NUMA node migration as an actual PROT_NONE page would have been
dealt with prior to this code path, however FOLL_FORCE introduced a
situation where this assumption did not hold.
See
https://marc.info/?l=linux-mm&m=147585445805166
for the patch proposal"
Additionally, there's a fix for an ancient bug related to FOLL_FORCE and
FOLL_WRITE by me.
[ This branch was rebased recently to add a few more acked-by's and
reviewed-by's ]
* gup_flag-cleanups:
mm: replace access_process_vm() write parameter with gup_flags
mm: replace access_remote_vm() write parameter with gup_flags
mm: replace __access_remote_vm() write parameter with gup_flags
mm: replace get_user_pages_remote() write/force parameters with gup_flags
mm: replace get_user_pages() write/force parameters with gup_flags
mm: replace get_vaddr_frames() write/force parameters with gup_flags
mm: replace get_user_pages_locked() write/force parameters with gup_flags
mm: replace get_user_pages_unlocked() write/force parameters with gup_flags
mm: remove write/force parameters from __get_user_pages_unlocked()
mm: remove write/force parameters from __get_user_pages_locked()
mm: remove gup_flags FOLL_WRITE games from __get_user_pages()
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This removes the 'write' and 'force' use from get_user_pages_unlocked()
and replaces them with 'gup_flags' to make the use of FOLL_FORCE
explicit in callers as use of this flag can result in surprising
behaviour (and hence bugs) within the mm subsystem.
Signed-off-by: Lorenzo Stoakes <lstoakes@gmail.com>
Reviewed-by: Jan Kara <jack@suse.cz>
Acked-by: Michal Hocko <mhocko@suse.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Pull more SCSI updates from James Bottomley:
"This is just a set of minor updates and fixes which weren't quite
ready in time for the first pull request.
The only real thing of note is Mike Christie is stepping down as
Maintainer of iscsi to be replaced by Lee Duncan and Chris Leech"
* tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
scsi: ufs: Kconfig fix
scsi: g_NCR5380: Stop using scsi_module.c
scsi: g_NCR5380: Reduce overrides[] from array to struct
scsi: g_NCR5380: Remove deprecated __setup
scsi: ufs: Fix error return code in ufshcd_init()
scsi: ufs: Data Segment only needed for WRITE DESCRIPTOR
scsi: cxgb4i: Set completion bit in work request
MAINTAINERS: Update open-iscsi maintainers
scsi: ufs: Enable no vccq quirk for skhynix device
scsi: be2iscsi: mark symbols static where possible
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Currently if we have PCI and UFSHCD configured in the kernel, both
SCSI_UFS_DWC_TC_PCI and SCSI_UFSHCD_PCI show up, which is not correct.
This patch changes the UFS Kconfig to assure hierarchy between the 2
options.
Signed-off-by: Joao Pinto <jpinto@synopsys.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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Convert g_NCR5380 to use scsi_add_host instead of scsi_module.c Use
pnp_driver and isa_driver to manage cards.
In order to support multiple cards, new module parameter format is
introduced. The old parameters are kept for compatibility.
Signed-off-by: Ondrej Zary <linux@rainbow-software.org>
Acked-by: Finn Thain <fthain@telegraphics.com.au>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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Remove compile-time card type definition GENERIC_NCR5380_OVERRIDE. Then
remove all code iterating the overrides[] array and reduce it to struct
card.
Signed-off-by: Ondrej Zary <linux@rainbow-software.org>
Acked-by: Finn Thain <fthain@telegraphics.com.au>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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Remove deprecated __setup for parsing command line parameters.
g_NCR5380.* parameters could be used instead.
This might break existing setups with g_NCR5380 built-in (if there are
any). But it has to go in order to remove the overrides[] array.
Signed-off-by: Ondrej Zary <linux@rainbow-software.org>
Acked-by: Finn Thain <fthain@telegraphics.com.au>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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Fix to return a negative error code from the error handling case instead
of 0, as done elsewhere in this function.
Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Reviewed-by: Subhash Jadavani <subhashj@codeaurora.org>
Reviewed-by: Kiwoong Kim <kwmad.kim@samsung.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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Some devices have problems handling a Query UPIU with Data Segment
set. Only set it for WRITE DESCRIPTOR commands.
[mkp: updated patch description]
Signed-off-by: Zang Leigang <zangleigang@hisilicon.com>
Reviewed-by: Subhash Jadavani <subhashj@codeaurora.org>
Reviewed-by: Kiwoong Kim <kwmad.kim@samsung.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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If SKCBF_TX_FLAG_COMPL flag is set and unacknowledged credits are >= max
credits / 2, set completion bit in work request to reclaim credits.
Signed-off-by: Varun Prakash <varun@chelsio.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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This patch enable no vccq quirk for SKHynix devices. SKHynix ufs device
don't need vccq vrail for device operation.
Signed-off-by: Kyuho Choi <kyuho.choi@sk.com>
Reviewed-by: Subhash Jadavani <subhashj@codeaurora.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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We get 6 warnings when building kernel with W=1:
drivers/scsi/be2iscsi/be_main.c:65:1: warning: no previous prototype for 'beiscsi_log_enable_disp' [-Wmissing-prototypes]
drivers/scsi/be2iscsi/be_main.c:78:1: warning: no previous prototype for 'beiscsi_log_enable_change' [-Wmissing-prototypes]
drivers/scsi/be2iscsi/be_main.c:97:1: warning: no previous prototype for 'beiscsi_log_enable_store' [-Wmissing-prototypes]
drivers/scsi/be2iscsi/be_main.c:116:1: warning: no previous prototype for 'beiscsi_log_enable_init' [-Wmissing-prototypes]
drivers/scsi/be2iscsi/be_main.c:4587:5: warning: no previous prototype for 'beiscsi_iotask_v2' [-Wmissing-prototypes]
drivers/scsi/be2iscsi/be_main.c:4976:6: warning: no previous prototype for 'beiscsi_hba_attrs_init' [-Wmissing-prototypes]
In fact, these functions are only used in the file in which they are
declared and don't need a declaration, but can be made static. So this
patch marks these functions with 'static'.
Signed-off-by: Baoyou Xie <baoyou.xie@linaro.org>
Reviewed-by: Jitendra Bhivare <Jitendra.bhivare@broadcom>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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Pull blk-mq irq/cpu mapping updates from Jens Axboe:
"This is the block-irq topic branch for 4.9-rc. It's mostly from
Christoph, and it allows drivers to specify their own mappings, and
more importantly, to share the blk-mq mappings with the IRQ affinity
mappings. It's a good step towards making this work better out of the
box"
* 'for-4.9/block-irq' of git://git.kernel.dk/linux-block:
blk_mq: linux/blk-mq.h does not include all the headers it depends on
blk-mq: kill unused blk_mq_create_mq_map()
blk-mq: get rid of the cpumask in struct blk_mq_tags
nvme: remove the post_scan callout
nvme: switch to use pci_alloc_irq_vectors
blk-mq: provide a default queue mapping for PCI device
blk-mq: allow the driver to pass in a queue mapping
blk-mq: remove ->map_queue
blk-mq: only allocate a single mq_map per tag_set
blk-mq: don't redistribute hardware queues on a CPU hotplug event
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All drivers use the default, so provide an inline version of it. If we
ever need other queue mapping we can add an optional method back,
although supporting will also require major changes to the queue setup
code.
This provides better code generation, and better debugability as well.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Keith Busch <keith.busch@intel.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
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Pull SCSI updates from James Bottomley:
"This update includes the usual round of major driver updates (hpsa,
be2iscsi, hisi_sas, zfcp, cxlflash). There's a new incarnation of hpsa
called smartpqi for which a driver is added, there's some cleanup work
of the ibm vscsi target and updates to libfc, plus a whole host of
minor fixes and updates and finally the removal of several ISA drivers
which seem not to have been used for years"
* tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: (173 commits)
scsi: mvsas: Mark symbols static where possible
scsi: pm8001: Mark symbols static where possible
scsi: arcmsr: Simplify user_len checking
scsi: fcoe: fix off by one in eth2fc_speed()
scsi: dtc: remove from tree
scsi: t128: remove from tree
scsi: pas16: remove from tree
scsi: u14-34f: remove from tree
scsi: ultrastor: remove from tree
scsi: in2000: remove from tree
scsi: wd7000: remove from tree
scsi: scsi_dh_alua: Fix memory leak in alua_rtpg()
scsi: lpfc: Mark symbols static where possible
scsi: hpsa: correct call to hpsa_do_reset
scsi: ufs: Get a TM service response from the correct offset
scsi: ibmvfc: Fix I/O hang when port is not mapped
scsi: megaraid_sas: clean function declarations in megaraid_sas_base.c up
scsi: ipr: Remove redundant messages at adapter init time
scsi: ipr: Don't log unnecessary 9084 error details
scsi: smartpqi: raid bypass lba calculation fix
...
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We get a few warnings when building kernel with W=1:
drivers/scsi/mvsas/mv_sas.c:77:18: warning: no previous prototype for 'mvs_find_dev_mvi' [-Wmissing-prototypes]
drivers/scsi/mvsas/mv_sas.c:105:5: warning: no previous prototype for 'mvs_find_dev_phyno' [-Wmissing-prototypes]
drivers/scsi/mvsas/mv_sas.c:1161:20: warning: no previous prototype for 'mvs_alloc_dev' [-Wmissing-prototypes]
drivers/scsi/mvsas/mv_sas.c:1178:6: warning: no previous prototype for 'mvs_free_dev' [-Wmissing-prototypes]
drivers/scsi/mvsas/mv_sas.c:1188:5: warning: no previous prototype for 'mvs_dev_found_notify' [-Wmissing-prototypes]
drivers/scsi/mvsas/mv_sas.c:1244:6: warning: no previous prototype for 'mvs_dev_gone_notify' [-Wmissing-prototypes]
drivers/scsi/mvsas/mv_sas.c:1614:6: warning: no previous prototype for 'mvs_set_sense' [-Wmissing-prototypes]
drivers/scsi/mvsas/mv_sas.c:1653:6: warning: no previous prototype for 'mvs_fill_ssp_resp_iu' [-Wmissing-prototypes]
drivers/scsi/mvsas/mv_64xx.c:139:6: warning: no previous prototype for 'mvs_64xx_clear_srs_irq' [-Wmissing-prototypes]
drivers/scsi/mvsas/mv_64xx.c:566:6: warning: no previous prototype for 'mvs_64xx_make_prd' [-Wmissing-prototypes]
....
In fact, these functions are only used in the file in which they are
declared and don't need a declaration, but can be made static. So this
patch marks these functions with 'static'.
Signed-off-by: Baoyou Xie <baoyou.xie@linaro.org>
Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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We get 2 warnings when building kernel with W=1:
drivers/scsi/pm8001/pm8001_sas.c:530:23: warning: no previous prototype for 'pm8001_alloc_dev' [-Wmissing-prototypes]
drivers/scsi/pm8001/pm8001_hwi.c:4495:5: warning: no previous prototype for 'pm8001_chip_phy_stop_req' [-Wmissing-prototypes]
In fact, these functions are only used in the file in which they are
declared and don't need a declaration, but can be made static. So this
patch marks these functions with 'static'.
Signed-off-by: Baoyou Xie <baoyou.xie@linaro.org>
Acked-by: Lindar Liu <lindar_liu@usish.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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Do the user_len check first and then the ver_addr allocation so that we
can save us the kfree() on the error path when user_len is >
ARCMSR_API_DATA_BUFLEN.
Signed-off-by: Borislav Petkov <bp@suse.de>
Cc: Marco Grassi <marco.gra@gmail.com>
Cc: Dan Carpenter <dan.carpenter@oracle.com>
Cc: Tomas Henzl <thenzl@redhat.com>
Cc: Martin K. Petersen <martin.petersen@oracle.com>
Cc: <stable@vger.kernel.org>
Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
Reviewed-by: Tomas Henzl <thenzl@redhat.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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This should be "< ARRAY_SIZE()" instead of "<= ARRAY_SIZE()".
Fixes: 0b924e5505a568e7 ("scsi: fcoe: provide translation table between Ethernet and FC port speeds")
Signed-off-by: Vincent Stehlé <vincent.stehle@laposte.net>
Cc: Johannes Thumshirn <jthumshirn@suse.de>
Cc: "Martin K. Petersen" <martin.petersen@oracle.com>
Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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The driver has not seen any maintainer activity or other work that
wasn't tree wide conversion or clenaups in the entire history of
the git tree.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Hannes Reinicke <hare@suse.de>
Acked-by: Finn Thain <fthain@telegraphics.com.au>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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The driver has not seen any maintainer activity or other work that
wasn't tree wide conversion or clenaups in the entire history of
the git tree.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Hannes Reinicke <hare@suse.de>
Acked-by: Finn Thain <fthain@telegraphics.com.au>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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The driver has not seen any maintainer activity or other work that
wasn't tree wide conversion or clenaups in the entire history of
the git tree.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Hannes Reinicke <hare@suse.de>
Acked-by: Finn Thain <fthain@telegraphics.com.au>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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The driver has not seen any maintainer activity or other work that
wasn't tree wide conversion or clenaups in the entire history of
the git tree.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Hannes Reinicke <hare@suse.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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The driver has not seen any maintainer activity or other work that
wasn't tree wide conversion or clenaups in the entire history of
the git tree.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Hannes Reinicke <hare@suse.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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The driver has not seen any maintainer activity or other work that
wasn't tree wide conversion or clenaups in the entire history of
the git tree.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Hannes Reinicke <hare@suse.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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The driver has not seen any maintainer activity or other work that
wasn't tree wide conversion or clenaups in the entire history of
the git tree.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Hannes Reinicke <hare@suse.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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buff should be freed before returning with SCSI_DH_RETRY in alua_rtpg().
Signed-off-by: tang.junhui <tang.junhui@zte.com.cn>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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We get a few warnings when building kernel with W=1:
drivers/scsi/lpfc/lpfc_sli.c:5693:1: warning: no previous prototype for 'lpfc_set_features' [-Wmissing-prototypes]
drivers/scsi/lpfc/lpfc_sli.c:8972:1: warning: no previous prototype for 'lpfc_sli_calc_ring' [-Wmissing-prototypes]
drivers/scsi/lpfc/lpfc_els.c:4621:1: warning: no previous prototype for 'lpfc_rdp_res_link_service' [-Wmissing-prototypes]
drivers/scsi/lpfc/lpfc_els.c:4633:1: warning: no previous prototype for 'lpfc_rdp_res_sfp_desc' [-Wmissing-prototypes]
drivers/scsi/lpfc/lpfc_els.c:4698:1: warning: no previous prototype for 'lpfc_rdp_res_link_error' [-Wmissing-prototypes]
drivers/scsi/lpfc/lpfc_els.c:4727:1: warning: no previous prototype for 'lpfc_rdp_res_bbc_desc' [-Wmissing-prototypes]
drivers/scsi/lpfc/lpfc_els.c:4752:1: warning: no previous prototype for 'lpfc_rdp_res_oed_temp_desc' [-Wmissing-prototypes]
drivers/scsi/lpfc/lpfc_els.c:4780:1: warning: no previous prototype for 'lpfc_rdp_res_oed_voltage_desc' [-Wmissing-prototypes]
drivers/scsi/lpfc/lpfc_els.c:4809:1: warning: no previous prototype for 'lpfc_rdp_res_oed_txbias_desc' [-Wmissing-prototypes]
drivers/scsi/lpfc/lpfc_els.c:4838:1: warning: no previous prototype for 'lpfc_rdp_res_oed_txpower_desc' [-Wmissing-prototypes]
....
In fact, these functions are only used in the file in which they are
declared and don't need a declaration, but can be made static. So this
patch marks these functions with 'static'.
Signed-off-by: Baoyou Xie <baoyou.xie@linaro.org>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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calling fill_cmd() using a MACRO definition not handled in switch
statement causes BUG() to be called.
Signed-off-by: Don Brace <don.brace@microsemi.com>
Reviewed-by: Scott Teel <scott.teel@microsemi.com>
Reviewed-by: Kevin Barnett <kevin.barnett@microsemi.com>
Reviewed-by: Tomas Henzl <thenzl@redhat.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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When any UFS host controller receives a TM(Task Management) response
from a UFS device, UFS driver has been recognize like receiving a
message of "Task Management Function Complete"(00h) in all cases, so
far. That means there is no pending task for a tag of the TM request
sent before in the UFS device. That's because the byte offset 6 in TM
response which has been used to get a TM service response so far
represents just whether or not a TM transmission passes.
Regarding UFS spec, the correct byte offset to get TM service response
is 15, not 6.
I tested that UFS driver responds properly for the TM response from a
UFS device with an reference board with exynos8890, as follow: No
pending task -> Task Management Function Complete (00h) Pending task ->
Task Management Function Succeeded (08h)
[mkp: applied by hand]
Signed-off-by: Kiwoong Kim <kwmad.kim@samsung.com>
Signed-off-by: HeonGwang Chu <hg.chu@samsung.com>
Tested-by: : Kiwoong Kim <kwmad.kim@samsung.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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If a VFC port gets unmapped in the VIOS, it may not respond with a CRQ
init complete following H_REG_CRQ. If this occurs, we can end up having
called scsi_block_requests and not a resulting unblock until the init
complete happens, which may never occur, and we end up hanging I/O
requests. This patch ensures the host action stay set to
IBMVFC_HOST_ACTION_TGT_DEL so we move all rports into devloss state and
unblock unless we receive an init complete.
Cc: <stable@vger.kernel.org>
Signed-off-by: Brian King <brking@linux.vnet.ibm.com>
Acked-by: Tyrel Datwyler <tyreld@linux.vnet.ibm.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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We get a few warnings when building kernel with W=1:
drivers/scsi/megaraid/megaraid_sas_fusion.c:281:1: warning: no previous prototype for 'megasas_free_cmds_fusion' [-Wmissing-prototypes]
drivers/scsi/megaraid/megaraid_sas_fusion.c:714:1: warning: no previous prototype for 'megasas_ioc_init_fusion' [-Wmissing-prototypes]
....
In fact, these functions are declared in
drivers/scsi/megaraid/megaraid_sas_base.c, but should be declared in a
header file, thus can be recognized in other file.
So this patch adds the declarations into
drivers/scsi/megaraid/megaraid_sas_fusion.h.
Signed-off-by: Baoyou Xie <baoyou.xie@linaro.org>
Acked-by: Sumit Saxena <sumit.saxena@broadcom.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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Whenever multiple HRRQs are enabled, which is the default setting now,
we end up seeing the following message logged prior to initialization of
each HRRQ:
Starting IOA initialization sequence
This results in 16 of these messages on most adapters, which serves
little purpose. Change to just log this once.
Signed-off-by: Brian King <brking@linux.vnet.ibm.com>
Reviewed-by: Gabriel Krisman Bertazi <krisman@linux.vnet.ibm.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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A 9084 error gets logged by the ipr adapter when adapter raw mode gets
enabled. A bunch of unformatted hex data also gets logged for this
error, which is of little use, so let's avoid logging it by default in
order to avoid the log getting polluted with useless data.
Signed-off-by: Brian King <brking@linux.vnet.ibm.com>
Reviewed-by: Gabriel Krisman Bertazi <krisman@linux.vnet.ibm.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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