These macros elaborate on BOUNDED_SECTION_(PRE|POST)_LABEL macros,
prepending an optional KEEP(.gnu.linkonce##_sec_) reservation, and a
linker-symbol to address it.
This allows a developer to define a header struct (which must fit with
the section's base struct-type), and could contain:
1- fields whose value is common to the entire set of data-records.
This allows the header & data structs to specialize, complement
each other, and shrink.
2- an uplink pointer to an organizing struct
which refs other related/sub data-tables
header record is addressable via the extern'd header linker-symbol
Once the linker-symbols created by the macro are ref'd extern in code,
that code can compute a record's index (ptr - start) in the "primary"
table, then use it to index into the related/sub tables. Adding a
primary.map_* field foreach sub-table would then allow deduplication
and remapping of that sub-table.
This is aimed at dyndbg's struct _ddebug __dyndbg[] section, whose 3
columns: function, file, module are 50%, 90%, 100% redundant. The
module column is fully recoverable after dynamic_debug_init() saves it
to each ddebug_table.module as the builtin __dyndbg[] table is parsed.
Given that those 3 columns use 24/56 of a _ddebug record, a dyndbg=y
kernel with ~5k callsites could reduce kernel memory substantially.
Returning that memory to the kernel buddy-allocator? is then possible.
Signed-off-by: Jim Cromie <jim.cromie@gmail.com>
Link: https://lore.kernel.org/r/20221117171633.923628-3-jim.cromie@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Commit 2f465b921b ("vmlinux.lds.h: place optional header space in BOUNDED_SECTION")
added BOUNDED_SECTION_(PRE|POST)_LABEL macros, encapsulating the basic
boilerplate to KEEP/pack records into a section, and to mark the begin
and end of the section with linker-symbols.
But it tried to do extra, adding KEEP(*(.gnu.linkonce.##_sec_)) to
optionally reserve a header record in front of the data. It wrongly
placed the KEEP after the linker-symbol starting the section,
so if a header was added, it would wind up in the data.
Moving the KEEP to the "correct" place proved brittle, and too clever
by half. The obvious safe fix is to remove the KEEP and restore the
plain old boilerplate. The header can be added later, with separate
macros.
Also, the macro var-names: _s_, _e_ are nearly invisible, change them
to more obvious names: _BEGIN_, _END_
Fixes: 2f465b921b ("vmlinux.lds.h: place optional header space in BOUNDED_SECTION")
Signed-off-by: Jim Cromie <jim.cromie@gmail.com>
Link: https://lore.kernel.org/r/20221117171633.923628-2-jim.cromie@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
When a FLOGI completes with a sequence timeout error, a freed kref ptr
dereference crash can occur due to a timing race involving ndlp referencing
in lpfc_dev_loss_tmo_callbk.
Fix by ensuring the driver accounts for an outstanding FLOGI when dev_loss
is active. Also, don't remove the HBA_FLOGI_OUTSTANDING flag when the
FLOGI is retried to allow the driver to handle the reference counts
correctly in lpfc_dev_loss_tmo_handler.
Reported-by: Dietmar Hahn <dietmar.hahn@fujitsu.com>
Tested-by: Dietmar Hahn <dietmar.hahn@fujitsu.com>
Signed-off-by: Justin Tee <justin.tee@broadcom.com>
Link: https://lore.kernel.org/r/20221116011921.105995-5-justintee8345@gmail.com
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
The dynamic mi_ver value holds the currently configured MI setting. mi_ver
was being displayed as part of the cmf_info sysfs attribute, when the
output string meant to display MI capabilities instead.
Add a mi_cap member in the lpfc_pc_sli4_params structure that will store MI
capabilities during initialization so that cmf_info prints out capabilities
instead of current configuration.
Signed-off-by: Justin Tee <justin.tee@broadcom.com>
Link: https://lore.kernel.org/r/20221116011921.105995-4-justintee8345@gmail.com
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
The lpfc_cmf_timer adjusts phba->cmf_link_byte_count periodically and can
artifically inflate bandwidth percent.
During bandwidth calculation, correct for this by setting a cap of logging
a maximum of 100%.
Bandwidth calculation is only used for display under LOG_CGN_MGMT so there
is no expectation of impacts on performance.
Signed-off-by: Justin Tee <justin.tee@broadcom.com>
Link: https://lore.kernel.org/r/20221116011921.105995-3-justintee8345@gmail.com
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Adapter configurations with limited EQ resources may fail to initialize.
Firmware resources are queried in lpfc_sli4_read_config(). The driver
parameters cfg_irq_chann and cfg_hdw_queue are adjusted from defaults if
constrained by firmware resources.
The minimum resource check includes a special allocation for queues such as
ELS, MBOX, NVME LS. However the additional reservation was also incorrectly
applied to EQ resources.
Reordered WQ|CQ|EQ resource checks to apply the special allocation
adjustment to WQ and CQ resources only.
Signed-off-by: Justin Tee <justin.tee@broadcom.com>
Link: https://lore.kernel.org/r/20221116011921.105995-2-justintee8345@gmail.com
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
One-element arrays are deprecated, and we are replacing them with flexible
array members instead. So, replace one-element array with flexible-array
member in struct fdmi_attr_s.
Important to mention is that doing a build before/after this patch results
in no binary output differences.
This helps with the ongoing efforts to tighten the FORTIFY_SOURCE routines
on memcpy() and help us make progress towards globally enabling
-fstrict-flex-arrays=3 [1].
Link: https://github.com/KSPP/linux/issues/209
Link: https://github.com/KSPP/linux/issues/79
Link: https://gcc.gnu.org/pipermail/gcc-patches/2022-October/602902.html [1]
Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org>
Link: https://lore.kernel.org/r/Y3P1rEEBq7HzJygq@work
Reviewed-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Variable ev_qual is being assigned and modified but the end result is never
used. The variable is redundant and can be removed.
Signed-off-by: Colin Ian King <colin.i.king@gmail.com>
Link: https://lore.kernel.org/r/20221111170824.558250-1-colin.i.king@gmail.com
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Use memset_startat() helper to simplify the code, no functional changes in
this patch.
Signed-off-by: Xiu Jianfeng <xiujianfeng@huawei.com>
Link: https://lore.kernel.org/r/20221111074310.132125-1-xiujianfeng@huawei.com
Reviewed-by: James Smart <jsmart2021@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
As 'lbdof_blen' is coming from user, if the size in kzalloc() is >=
MAX_ORDER then we hit a warning.
Call trace:
sg_ioctl
sg_ioctl_common
scsi_ioctl
sg_scsi_ioctl
blk_execute_rq
blk_mq_sched_insert_request
blk_mq_run_hw_queue
__blk_mq_delay_run_hw_queue
__blk_mq_run_hw_queue
blk_mq_sched_dispatch_requests
__blk_mq_sched_dispatch_requests
blk_mq_dispatch_rq_list
scsi_queue_rq
scsi_dispatch_cmd
scsi_debug_queuecommand
schedule_resp
resp_write_scat
If you try to allocate a memory larger than(>=) MAX_ORDER, then kmalloc()
will definitely fail. It creates a stack trace and messes up dmesg. The
user controls the size here so if they specify a too large size it will
fail.
Add __GFP_NOWARN in order to avoid too large allocation warning. This is
detected by static analysis using smatch.
Fixes: 481b5e5c79 ("scsi: scsi_debug: add resp_write_scat function")
Signed-off-by: Harshit Mogalapalli <harshit.m.mogalapalli@oracle.com>
Link: https://lore.kernel.org/r/20221111100526.1790533-1-harshit.m.mogalapalli@oracle.com
Acked-by: Douglas Gilbert <dgilbert@interlog.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Reviewed-by: Scott Benesh <scott.benesh@microchip.com>
Reviewed-by: Scott Teel <scott.teel@microchip.com>
Reviewed-by: Gerry Morong <gerry.morong@microchip.com>
Reviewed-by: Kevin Barnett <kevin.barnett@microchip.com>
Signed-off-by: Don Brace <don.brace@microchip.com>
Link: https://lore.kernel.org/r/166793533417.322537.3074216622272955440.stgit@brunhilda
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Initialize features to 0 before processing.
Reviewed-by: Scott Benesh <scott.benesh@microchip.com>
Reviewed-by: Mike Mcgowan <mike.mcgowan@microchip.com>
Reviewed-by: Kevin Barnett <kevin.barnett@microchip.com>
Signed-off-by: Don Brace <don.brace@microchip.com>
Link: https://lore.kernel.org/r/166793532902.322537.2436075977808555348.stgit@brunhilda
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Add in a call to flush the controller cache during driver removal.
Reviewed-by: Scott Benesh <scott.benesh@microchip.com>
Reviewed-by: Mike Mcgowan <mike.mcgowan@microchip.com>
Reviewed-by: Kevin Barnett <kevin.barnett@microchip.com>
Signed-off-by: Gilbert Wu <Gilbert.Wu@microchip.com>
Signed-off-by: Don Brace <don.brace@microchip.com>
Link: https://lore.kernel.org/r/166793532388.322537.878022136408270892.stgit@brunhilda
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Correct device count for multi-actuator drives which can cause kernel
panics.
Reviewed-by: Scott Benesh <scott.benesh@microchip.com>
Reviewed-by: Scott Teel <scott.teel@microchip.com>
Reviewed-by: Mike Mcgowan <mike.mcgowan@microchip.com>
Reviewed-by: Kevin Barnett <kevin.barnett@microchip.com>
Signed-off-by: Kumar Meiyappan <Kumar.Meiyappan@microchip.com>
Signed-off-by: Don Brace <don.brace@microchip.com>
Link: https://lore.kernel.org/r/166793531872.322537.9003385780343419275.stgit@brunhilda
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Change the sysfs raid_level attribute from "RAID-0" to N/A.
Reviewed-by: Scott Benesh <scott.benesh@microchip.com>
Reviewed-by: Scott Teel <scott.teel@microchip.com>
Reviewed-by: Mike McGowan <mike.mcgowan@microchip.com>
Signed-off-by: Kevin Barnett <kevin.barnett@microchip.com>
Signed-off-by: Don Brace <don.brace@microchip.com>
Link: https://lore.kernel.org/r/166793531357.322537.8639138137605612362.stgit@brunhilda
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Correct maximum LUN number for multi-actuator devices.
When multi-actuator support was added to smartpqi, the maximum number of
LUNs supported for multi-actuator devices was supposed to be changed from
unlimited to 256, but the setting was inadvertently left at unlimited.
Reviewed-by: Scott Benesh <scott.benesh@microchip.com>
Reviewed-by: Scott Teel <scott.teel@microchip.com>
Signed-off-by: Kevin Barnett <kevin.barnett@microchip.com>
Signed-off-by: Don Brace <don.brace@microchip.com>
Link: https://lore.kernel.org/r/166793530842.322537.816949081443241857.stgit@brunhilda
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Add support for host_tagset.
Also move the reserved command slots to the end of the pool to eliminate an
addition operation for every SCSI request.
This patch was originally authored by Hannes Reinecke here:
Link: https://lore.kernel.org/linux-block/20191126131009.71726-8-hare@suse.de/
But we NAKed this patch because we wanted to fully test multipath
failover operations.
Suggested-by: Hannes Reinecke <hare@suse.de>
Reviewed-by: Scott Benesh <scott.benesh@microchip.com>
Reviewed-by: Scott Teel <scott.teel@microchip.com>
Reviewed-by: Mahesh Rajashekhara <Mahesh.Rajashekhara@microchip.com>
Reviewed-by: Mike McGowen <Mike.McGowen@microchip.com>
Reviewed-by: Kevin Barnett <kevin.barnett@microchip.com>
Signed-off-by: Don Brace <don.brace@microchip.com>
Link: https://lore.kernel.org/r/166793529811.322537.3294617845448383948.stgit@brunhilda
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Pointer lp is being initialized and incremented but the result is never
read. The pointer is redundant and can be removed.
Once lp is removed, pcmd is not longer used. So remove pcmd as well
Signed-off-by: Colin Ian King <colin.i.king@gmail.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>
Link: https://lore.kernel.org/r/20221108183620.93978-1-jsmart2021@gmail.com
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Remove the usage of dma_get_required_mask() API. Directly set the DMA mask
to 63/64 if the system is a 64bit machine.
Signed-off-by: Sreekanth Reddy <sreekanth.reddy@broadcom.com>
Link: https://lore.kernel.org/r/20221111102246.19995-2-sreekanth.reddy@broadcom.com
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Remove the usage of dma_get_required_mask() API. Directly set the DMA mask
to 63/64 if the system is a 64bit machine.
Signed-off-by: Sreekanth Reddy <sreekanth.reddy@broadcom.com>
Link: https://lore.kernel.org/r/20221028091655.17741-2-sreekanth.reddy@broadcom.com
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
If device_register() returns error, the name allocated by the
dev_set_name() need be freed. As described in the comment of
device_register(), we should use put_device() to give up the reference in
the error path.
Fix this by calling put_device(), the name will be freed in the
kobject_cleanup(), and this patch modified resources will be released by
calling the corresponding callback function in the device_release().
Signed-off-by: Zhou Guanghui <zhouguanghui1@huawei.com>
Link: https://lore.kernel.org/r/20221110033729.1555-1-zhouguanghui1@huawei.com
Reviewed-by: Mike Christie <michael.christie@oracle.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
We used to use the wrong type of integer in 'zfcp_fsf_req_send()' to cache
the FSF request ID when sending a new FSF request. This is used in case the
sending fails and we need to remove the request from our internal hash
table again (so we don't keep an invalid reference and use it when we free
the request again).
In 'zfcp_fsf_req_send()' we used to cache the ID as 'int' (signed and 32
bit wide), but the rest of the zfcp code (and the firmware specification)
handles the ID as 'unsigned long'/'u64' (unsigned and 64 bit wide [s390x
ELF ABI]). For one this has the obvious problem that when the ID grows
past 32 bit (this can happen reasonably fast) it is truncated to 32 bit
when storing it in the cache variable and so doesn't match the original ID
anymore. The second less obvious problem is that even when the original ID
has not yet grown past 32 bit, as soon as the 32nd bit is set in the
original ID (0x80000000 = 2'147'483'648) we will have a mismatch when we
cast it back to 'unsigned long'. As the cached variable is of a signed
type, the compiler will choose a sign-extending instruction to load the 32
bit variable into a 64 bit register (e.g.: 'lgf %r11,188(%r15)'). So once
we pass the cached variable into 'zfcp_reqlist_find_rm()' to remove the
request again all the leading zeros will be flipped to ones to extend the
sign and won't match the original ID anymore (this has been observed in
practice).
If we can't successfully remove the request from the hash table again after
'zfcp_qdio_send()' fails (this happens regularly when zfcp cannot notify
the adapter about new work because the adapter is already gone during
e.g. a ChpID toggle) we will end up with a double free. We unconditionally
free the request in the calling function when 'zfcp_fsf_req_send()' fails,
but because the request is still in the hash table we end up with a stale
memory reference, and once the zfcp adapter is either reset during recovery
or shutdown we end up freeing the same memory twice.
The resulting stack traces vary depending on the kernel and have no direct
correlation to the place where the bug occurs. Here are three examples that
have been seen in practice:
list_del corruption. next->prev should be 00000001b9d13800, but was 00000000dead4ead. (next=00000001bd131a00)
------------[ cut here ]------------
kernel BUG at lib/list_debug.c:62!
monitor event: 0040 ilc:2 [#1] PREEMPT SMP
Modules linked in: ...
CPU: 9 PID: 1617 Comm: zfcperp0.0.1740 Kdump: loaded
Hardware name: ...
Krnl PSW : 0704d00180000000 00000003cbeea1f8 (__list_del_entry_valid+0x98/0x140)
R:0 T:1 IO:1 EX:1 Key:0 M:1 W:0 P:0 AS:3 CC:1 PM:0 RI:0 EA:3
Krnl GPRS: 00000000916d12f1 0000000080000000 000000000000006d 00000003cb665cd6
0000000000000001 0000000000000000 0000000000000000 00000000d28d21e8
00000000d3844000 00000380099efd28 00000001bd131a00 00000001b9d13800
00000000d3290100 0000000000000000 00000003cbeea1f4 00000380099efc70
Krnl Code: 00000003cbeea1e8: c020004f68a7 larl %r2,00000003cc8d7336
00000003cbeea1ee: c0e50027fd65 brasl %r14,00000003cc3e9cb8
#00000003cbeea1f4: af000000 mc 0,0
>00000003cbeea1f8: c02000920440 larl %r2,00000003cd12aa78
00000003cbeea1fe: c0e500289c25 brasl %r14,00000003cc3fda48
00000003cbeea204: b9040043 lgr %r4,%r3
00000003cbeea208: b9040051 lgr %r5,%r1
00000003cbeea20c: b9040032 lgr %r3,%r2
Call Trace:
[<00000003cbeea1f8>] __list_del_entry_valid+0x98/0x140
([<00000003cbeea1f4>] __list_del_entry_valid+0x94/0x140)
[<000003ff7ff502fe>] zfcp_fsf_req_dismiss_all+0xde/0x150 [zfcp]
[<000003ff7ff49cd0>] zfcp_erp_strategy_do_action+0x160/0x280 [zfcp]
[<000003ff7ff4a22e>] zfcp_erp_strategy+0x21e/0xca0 [zfcp]
[<000003ff7ff4ad34>] zfcp_erp_thread+0x84/0x1a0 [zfcp]
[<00000003cb5eece8>] kthread+0x138/0x150
[<00000003cb557f3c>] __ret_from_fork+0x3c/0x60
[<00000003cc4172ea>] ret_from_fork+0xa/0x40
INFO: lockdep is turned off.
Last Breaking-Event-Address:
[<00000003cc3e9d04>] _printk+0x4c/0x58
Kernel panic - not syncing: Fatal exception: panic_on_oops
or:
Unable to handle kernel pointer dereference in virtual kernel address space
Failing address: 6b6b6b6b6b6b6000 TEID: 6b6b6b6b6b6b6803
Fault in home space mode while using kernel ASCE.
AS:0000000063b10007 R3:0000000000000024
Oops: 0038 ilc:3 [#1] SMP
Modules linked in: ...
CPU: 10 PID: 0 Comm: swapper/10 Kdump: loaded
Hardware name: ...
Krnl PSW : 0404d00180000000 000003ff7febaf8e (zfcp_fsf_reqid_check+0x86/0x158 [zfcp])
R:0 T:1 IO:0 EX:0 Key:0 M:1 W:0 P:0 AS:3 CC:1 PM:0 RI:0 EA:3
Krnl GPRS: 5a6f1cfa89c49ac3 00000000aff2c4c8 6b6b6b6b6b6b6b6b 00000000000002a8
0000000000000000 0000000000000055 0000000000000000 00000000a8515800
0700000000000000 00000000a6e14500 00000000aff2c000 000000008003c44c
000000008093c700 0000000000000010 00000380009ebba8 00000380009ebb48
Krnl Code: 000003ff7febaf7e: a7f4003d brc 15,000003ff7febaff8
000003ff7febaf82: e32020000004 lg %r2,0(%r2)
#000003ff7febaf88: ec2100388064 cgrj %r2,%r1,8,000003ff7febaff8
>000003ff7febaf8e: e3b020100020 cg %r11,16(%r2)
000003ff7febaf94: a774fff7 brc 7,000003ff7febaf82
000003ff7febaf98: ec280030007c cgij %r2,0,8,000003ff7febaff8
000003ff7febaf9e: e31020080004 lg %r1,8(%r2)
000003ff7febafa4: e33020000004 lg %r3,0(%r2)
Call Trace:
[<000003ff7febaf8e>] zfcp_fsf_reqid_check+0x86/0x158 [zfcp]
[<000003ff7febbdbc>] zfcp_qdio_int_resp+0x6c/0x170 [zfcp]
[<000003ff7febbf90>] zfcp_qdio_irq_tasklet+0xd0/0x108 [zfcp]
[<0000000061d90a04>] tasklet_action_common.constprop.0+0xdc/0x128
[<000000006292f300>] __do_softirq+0x130/0x3c0
[<0000000061d906c6>] irq_exit_rcu+0xfe/0x118
[<000000006291e818>] do_io_irq+0xc8/0x168
[<000000006292d516>] io_int_handler+0xd6/0x110
[<000000006292d596>] psw_idle_exit+0x0/0xa
([<0000000061d3be50>] arch_cpu_idle+0x40/0xd0)
[<000000006292ceea>] default_idle_call+0x52/0xf8
[<0000000061de4fa4>] do_idle+0xd4/0x168
[<0000000061de51fe>] cpu_startup_entry+0x36/0x40
[<0000000061d4faac>] smp_start_secondary+0x12c/0x138
[<000000006292d88e>] restart_int_handler+0x6e/0x90
Last Breaking-Event-Address:
[<000003ff7febaf94>] zfcp_fsf_reqid_check+0x8c/0x158 [zfcp]
Kernel panic - not syncing: Fatal exception in interrupt
or:
Unable to handle kernel pointer dereference in virtual kernel address space
Failing address: 523b05d3ae76a000 TEID: 523b05d3ae76a803
Fault in home space mode while using kernel ASCE.
AS:0000000077c40007 R3:0000000000000024
Oops: 0038 ilc:3 [#1] SMP
Modules linked in: ...
CPU: 3 PID: 453 Comm: kworker/3:1H Kdump: loaded
Hardware name: ...
Workqueue: kblockd blk_mq_run_work_fn
Krnl PSW : 0404d00180000000 0000000076fc0312 (__kmalloc+0xd2/0x398)
R:0 T:1 IO:0 EX:0 Key:0 M:1 W:0 P:0 AS:3 CC:1 PM:0 RI:0 EA:3
Krnl GPRS: ffffffffffffffff 523b05d3ae76abf6 0000000000000000 0000000000092a20
0000000000000002 00000007e49b5cc0 00000007eda8f000 0000000000092a20
00000007eda8f000 00000003b02856b9 00000000000000a8 523b05d3ae76abf6
00000007dd662000 00000007eda8f000 0000000076fc02b2 000003e0037637a0
Krnl Code: 0000000076fc0302: c004000000d4 brcl 0,76fc04aa
0000000076fc0308: b904001b lgr %r1,%r11
#0000000076fc030c: e3106020001a algf %r1,32(%r6)
>0000000076fc0312: e31010000082 xg %r1,0(%r1)
0000000076fc0318: b9040001 lgr %r0,%r1
0000000076fc031c: e30061700082 xg %r0,368(%r6)
0000000076fc0322: ec59000100d9 aghik %r5,%r9,1
0000000076fc0328: e34003b80004 lg %r4,952
Call Trace:
[<0000000076fc0312>] __kmalloc+0xd2/0x398
[<0000000076f318f2>] mempool_alloc+0x72/0x1f8
[<000003ff8027c5f8>] zfcp_fsf_req_create.isra.7+0x40/0x268 [zfcp]
[<000003ff8027f1bc>] zfcp_fsf_fcp_cmnd+0xac/0x3f0 [zfcp]
[<000003ff80280f1a>] zfcp_scsi_queuecommand+0x122/0x1d0 [zfcp]
[<000003ff800b4218>] scsi_queue_rq+0x778/0xa10 [scsi_mod]
[<00000000771782a0>] __blk_mq_try_issue_directly+0x130/0x208
[<000000007717a124>] blk_mq_request_issue_directly+0x4c/0xa8
[<000003ff801302e2>] dm_mq_queue_rq+0x2ea/0x468 [dm_mod]
[<0000000077178c12>] blk_mq_dispatch_rq_list+0x33a/0x818
[<000000007717f064>] __blk_mq_do_dispatch_sched+0x284/0x2f0
[<000000007717f44c>] __blk_mq_sched_dispatch_requests+0x1c4/0x218
[<000000007717fa7a>] blk_mq_sched_dispatch_requests+0x52/0x90
[<0000000077176d74>] __blk_mq_run_hw_queue+0x9c/0xc0
[<0000000076da6d74>] process_one_work+0x274/0x4d0
[<0000000076da7018>] worker_thread+0x48/0x560
[<0000000076daef18>] kthread+0x140/0x160
[<000000007751d144>] ret_from_fork+0x28/0x30
Last Breaking-Event-Address:
[<0000000076fc0474>] __kmalloc+0x234/0x398
Kernel panic - not syncing: Fatal exception: panic_on_oops
To fix this, simply change the type of the cache variable to 'unsigned
long', like the rest of zfcp and also the argument for
'zfcp_reqlist_find_rm()'. This prevents truncation and wrong sign extension
and so can successfully remove the request from the hash table.
Fixes: e60a6d69f1 ("[SCSI] zfcp: Remove function zfcp_reqlist_find_safe")
Cc: <stable@vger.kernel.org> #v2.6.34+
Signed-off-by: Benjamin Block <bblock@linux.ibm.com>
Link: https://lore.kernel.org/r/979f6e6019d15f91ba56182f1aaf68d61bf37fc6.1668595505.git.bblock@linux.ibm.com
Reviewed-by: Steffen Maier <maier@linux.ibm.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
If device_register() fails in sdebug_add_host_helper(), it will goto clean
and sdbg_host will be freed, but sdbg_host->host_list will not be removed
from sdebug_host_list, then list traversal may cause UAF. Fix it.
Fixes: 1da177e4c3 ("Linux-2.6.12-rc2")
Signed-off-by: Yuan Can <yuancan@huawei.com>
Link: https://lore.kernel.org/r/20221117084421.58918-1-yuancan@huawei.com
Acked-by: Douglas Gilbert <dgilbert@interlog.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
If device_register() fails in tcm_loop_setup_hba_bus(), the name allocated
by dev_set_name() need be freed. As comment of device_register() says, it
should use put_device() to give up the reference in the error path. So fix
this by calling put_device(), then the name can be freed in kobject_cleanup().
The 'tl_hba' will be freed in tcm_loop_release_adapter(), so it don't need
goto error label in this case.
Fixes: 3703b2c5d0 ("[SCSI] tcm_loop: Add multi-fabric Linux/SCSI LLD fabric module")
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
Link: https://lore.kernel.org/r/20221115015042.3652261-1-yangyingliang@huawei.com
Reviewed-by: Mike Christie <michael.chritie@oracle.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
After it receives command reply, mpi3mr driver checks command result. If
the result is not zero, it prints out command information. This debug
information is confusing since they are printed even when the non-zero
result is expected. "Power-on or device reset occurred" is printed for Test
Unit Ready command at drive detection. Inquiry failure for unsupported VPD
page header is also printed. They are harmless but look like failures.
To avoid the confusion, print the command reply debug information only when
the module parameter logging_level has value MPI3_DEBUG_SCSI_ERROR= 64, in
same manner as mpt3sas driver.
Signed-off-by: Shin'ichiro Kawasaki <shinichiro.kawasaki@wdc.com>
Link: https://lore.kernel.org/r/20221111014449.1649968-1-shinichiro.kawasaki@wdc.com
Reviewed-by: Damien Le Moal <damien.lemoal@opensource.wdc.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Fix up some function argument alignment fails.
Cc: Chaitanya Kumar Borah <chaitanya.kumar.borah@intel.com>
Cc: Kai Vehmanen <kai.vehmanen@linux.intel.com>
Cc: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20221108151839.31567-5-ville.syrjala@linux.intel.com
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Make the two branches of get_saved_enc() look alike. Currently
they look different even though they do exactly the same thing
apart from == vs. != for the MST comparison.
Cc: Chaitanya Kumar Borah <chaitanya.kumar.borah@intel.com>
Cc: Kai Vehmanen <kai.vehmanen@linux.intel.com>
Cc: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20221108151839.31567-4-ville.syrjala@linux.intel.com
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
When doing HDMI+non-HDMI cloning the other sink can't get
the infoframes/etc. so stuff like limited range output is
not a good idea.
Similarly when doing HDMI+HDMI cloning on g4x (only platform
where we allow it) only one of the ports can receive infoframes
and so again using any fancy stuff is a bad idea. We also don't
track the inforames/audio state per-port so we'd end up with
some kind of random mismash state when multipled encoders try
to compute the same stuff. And the hardware will in fact
automagically disable audio/infoframe transmission if you try
to enable it for multiple HDMI ports at the same time.
Thus disable all HDMI specific features when cloning.
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20221107194604.15227-4-ville.syrjala@linux.intel.com
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Add the missing ldw vs. udw information to the CGM (de)gamma
bit definitions to make it a bit easier to see which should
be used where.
Also use the these appropriately in the LUT entry pack/unpack
functions.
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20221114153732.11773-5-ville.syrjala@linux.intel.com
Use consistent bit definitions for the 12.4bit precision palette bits.
We just define these alongside the ilk/snb register definitions and
point to those from the icl+ superfine segment defines (and we also
already pointed to them from the ivb+ precision palette defines).
Also use the these appropriately in the LUT entry pack/unpack
functions.
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20221114153732.11773-4-ville.syrjala@linux.intel.com
Use consistent bit definitions for the 10bit precision palette bits.
We just define these alongside the ilk/snb register definitions and
point to those from the ivb+ defines.
Also use the these appropriately in the LUT entry pack/unpack
functions.
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20221114153732.11773-3-ville.syrjala@linux.intel.com
Use consistent bit definitions for the legacy gamma LUT. We just
define these alongside the pre-ilk register definitions and point
to those from the ilk+ defines.
Also use the these appropriately in the LUT entry pack/unpack
functions.
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20221114153732.11773-2-ville.syrjala@linux.intel.com
Include dev_name() in the tracpoints so one can filter based on
the device.
Example:
echo 'dev=="0000:00:02.0"' > events/i915/intel_cpu_fifo_underrun/filter
v2: Reduce the magic macros, rebase
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20221111123120.7759-5-ville.syrjala@linux.intel.com
Acked-by: Jani Nikula <jani.nikula@intel.com>
Print the name of the plane in the fbc tracepoints. As the
pipe<->plane assignment can vary on old hw it's probably
more helpful to see both the plane and the pipe names together.
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20221111123120.7759-3-ville.syrjala@linux.intel.com
Acked-by: Jani Nikula <jani.nikula@intel.com>
Pass intel_plane rather than drm_plane to the plane tracepoints.
Matches what we do eg. with the fbc tracepoints. Using the same
type for everything will help with digging out the device name
from the plane in the future.
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20221111123120.7759-2-ville.syrjala@linux.intel.com
Acked-by: Jani Nikula <jani.nikula@intel.com>
Current release - regressions:
- tls: fix memory leak in tls_enc_skb() and tls_sw_fallback_init()
Previous releases - regressions:
- bridge: fix memory leaks when changing VLAN protocol
- dsa: make dsa_master_ioctl() see through port_hwtstamp_get() shims
- dsa: don't leak tagger-owned storage on switch driver unbind
- eth: mlxsw: avoid warnings when not offloaded FDB entry with IPv6 is removed
- eth: stmmac: ensure tx function is not running in stmmac_xdp_release()
- eth: hns3: fix return value check bug of rx copybreak
Previous releases - always broken:
- kcm: close race conditions on sk_receive_queue
- bpf: fix alignment problem in bpf_prog_test_run_skb()
- bpf: fix writing offset in case of fault in strncpy_from_kernel_nofault
- eth: macvlan: use built-in RCU list checking
- eth: marvell: add sleep time after enabling the loopback bit
- eth: octeon_ep: fix potential memory leak in octep_device_setup()
Misc:
- tcp: configurable source port perturb table size
- bpf: Convert BPF_DISPATCHER to use static_call() (not ftrace)
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
-----BEGIN PGP SIGNATURE-----
iQJGBAABCAAwFiEEg1AjqC77wbdLX2LbKSR5jcyPE6QFAmN2FlMSHHBhYmVuaUBy
ZWRoYXQuY29tAAoJECkkeY3MjxOkWAwQAJcV7XEB7bEssgabFkEmC4uvS/sFlyHC
uSwFRn5ojaB2c56T1CnNYmitg9Wr4arC6Vca28iai6BgqB6t4qLRI/WWTsZiEPhi
mt/pjNN2u9JMyaafHFHYfXnbSDWRF7kPMpNw4l3uL0vkGyjSI7LGAOP4Qh8C1h/d
tNVSDZnj4Laj/3JtDf7Rk6ydCqPYnNdWxFfoZ/SQkjYZKD3Ze9tml7WJykAzCTLp
yUiPC6TvHOnWIZYbB04sVVOQD4V+95TSOgEhB6wzs/CXB7iBEY+N+oCedjP9Xrfw
n3ea4anBoTleDnJXJI57LhdJBkyoXncfbpbYLwXljyIgosr7XVTALvOG8XUhg/DW
FzN5DWQ54jzTsx2eXFJzjQQcDIgyxazk9EdoHdqF8byCasP+fofq1JvzyqtvNSyh
h8Ps6jdMZrWpXuFDVApXUhP32A/+9q+dFSYHJO681m6mf4CIaUXdm4aB1dkxDAvg
PSlk797U94RQCzJgqxhrgsq1PGQPBb+qadZrAiD3aQi26g0NWCTg7uFpCeCEK2ZF
fLwc2XxrwLQm1q7xQVoEg4UxPIIf0mUesvOD9sLDYop0rFIw8x0v7jdYM4kyhN3o
6FWAXKxBe3LJ9jTTsVTbZbfHYpTnS8Q2KSclBN+/dZNHwwsUPHjy17Z2Ct3o3Jlm
lNbiiD30BgsD
=vVJk
-----END PGP SIGNATURE-----
Merge tag 'net-6.1-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Pull networking fixes from Paolo Abeni:
"Including fixes from bpf.
Current release - regressions:
- tls: fix memory leak in tls_enc_skb() and tls_sw_fallback_init()
Previous releases - regressions:
- bridge: fix memory leaks when changing VLAN protocol
- dsa: make dsa_master_ioctl() see through port_hwtstamp_get() shims
- dsa: don't leak tagger-owned storage on switch driver unbind
- eth: mlxsw: avoid warnings when not offloaded FDB entry with IPv6
is removed
- eth: stmmac: ensure tx function is not running in
stmmac_xdp_release()
- eth: hns3: fix return value check bug of rx copybreak
Previous releases - always broken:
- kcm: close race conditions on sk_receive_queue
- bpf: fix alignment problem in bpf_prog_test_run_skb()
- bpf: fix writing offset in case of fault in
strncpy_from_kernel_nofault
- eth: macvlan: use built-in RCU list checking
- eth: marvell: add sleep time after enabling the loopback bit
- eth: octeon_ep: fix potential memory leak in octep_device_setup()
Misc:
- tcp: configurable source port perturb table size
- bpf: Convert BPF_DISPATCHER to use static_call() (not ftrace)"
* tag 'net-6.1-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (51 commits)
net: use struct_group to copy ip/ipv6 header addresses
net: usb: smsc95xx: fix external PHY reset
net: usb: qmi_wwan: add Telit 0x103a composition
netdevsim: Fix memory leak of nsim_dev->fa_cookie
tcp: configurable source port perturb table size
l2tp: Serialize access to sk_user_data with sk_callback_lock
net: thunderbolt: Fix error handling in tbnet_init()
net: microchip: sparx5: Fix potential null-ptr-deref in sparx_stats_init() and sparx5_start()
net: lan966x: Fix potential null-ptr-deref in lan966x_stats_init()
net: dsa: don't leak tagger-owned storage on switch driver unbind
net/x25: Fix skb leak in x25_lapb_receive_frame()
net: ag71xx: call phylink_disconnect_phy if ag71xx_hw_enable() fail in ag71xx_open()
bridge: switchdev: Fix memory leaks when changing VLAN protocol
net: hns3: fix setting incorrect phy link ksettings for firmware in resetting process
net: hns3: fix return value check bug of rx copybreak
net: hns3: fix incorrect hw rss hash type of rx packet
net: phy: marvell: add sleep time after enabling the loopback bit
net: ena: Fix error handling in ena_init()
kcm: close race conditions on sk_receive_queue
net: ionic: Fix error handling in ionic_init_module()
...
This fixes three issues in nested SVM:
1) in the shutdown_interception() vmexit handler we call kvm_vcpu_reset().
However, if running nested and L1 doesn't intercept shutdown, the function
resets vcpu->arch.hflags without properly leaving the nested state.
This leaves the vCPU in inconsistent state and later triggers a kernel
panic in SVM code. The same bug can likely be triggered by sending INIT
via local apic to a vCPU which runs a nested guest.
On VMX we are lucky that the issue can't happen because VMX always
intercepts triple faults, thus triple fault in L2 will always be
redirected to L1. Plus, handle_triple_fault() doesn't reset the vCPU.
INIT IPI can't happen on VMX either because INIT events are masked while
in VMX mode.
Secondarily, KVM doesn't honour SHUTDOWN intercept bit of L1 on SVM.
A normal hypervisor should always intercept SHUTDOWN, a unit test on
the other hand might want to not do so.
Finally, the guest can trigger a kernel non rate limited printk on SVM
from the guest, which is fixed as well.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This fixes three issues in nested SVM:
1) in the shutdown_interception() vmexit handler we call kvm_vcpu_reset().
However, if running nested and L1 doesn't intercept shutdown, the function
resets vcpu->arch.hflags without properly leaving the nested state.
This leaves the vCPU in inconsistent state and later triggers a kernel
panic in SVM code. The same bug can likely be triggered by sending INIT
via local apic to a vCPU which runs a nested guest.
On VMX we are lucky that the issue can't happen because VMX always
intercepts triple faults, thus triple fault in L2 will always be
redirected to L1. Plus, handle_triple_fault() doesn't reset the vCPU.
INIT IPI can't happen on VMX either because INIT events are masked while
in VMX mode.
Secondarily, KVM doesn't honour SHUTDOWN intercept bit of L1 on SVM.
A normal hypervisor should always intercept SHUTDOWN, a unit test on
the other hand might want to not do so.
Finally, the guest can trigger a kernel non rate limited printk on SVM
from the guest, which is fixed as well.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
It is valid to receive external interrupt and have broken IDT entry,
which will lead to #GP with exit_int_into that will contain the index of
the IDT entry (e.g any value).
Other exceptions can happen as well, like #NP or #SS
(if stack switch fails).
Thus this warning can be user triggred and has very little value.
Cc: stable@vger.kernel.org
Signed-off-by: Maxim Levitsky <mlevitsk@redhat.com>
Message-Id: <20221103141351.50662-10-mlevitsk@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Add a SVM implementation to triple_fault_test to test that
emulated/injected shutdown works.
Since instead of the VMX, the SVM allows the hypervisor to avoid
intercepting shutdown in guest, don't intercept shutdown to test that
KVM suports this correctly.
Signed-off-by: Maxim Levitsky <mlevitsk@redhat.com>
Message-Id: <20221103141351.50662-9-mlevitsk@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This is SVM correctness fix - although a sane L1 would intercept
SHUTDOWN event, it doesn't have to, so we have to honour this.
Signed-off-by: Maxim Levitsky <mlevitsk@redhat.com>
Message-Id: <20221103141351.50662-8-mlevitsk@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Add test that tests that on SVM if L1 doesn't intercept SHUTDOWN,
then L2 crashes L1 and doesn't crash L2
Signed-off-by: Maxim Levitsky <mlevitsk@redhat.com>
Message-Id: <20221103141351.50662-7-mlevitsk@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
struct idt_entry will be used for a test which will break IDT on purpose.
Signed-off-by: Maxim Levitsky <mlevitsk@redhat.com>
Message-Id: <20221103141351.50662-6-mlevitsk@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
