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The error return err is not initialized and there is a possibility
that err is not assigned causing mv88e6xxx_port_bridge_join to
return a garbage error return status. Fix this by initializing err
to 0.
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Reviewed-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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When configured in fixed link, the DaVinci emac driver sets the
priv->phydev to NULL and further ioctl calls to the phy_mii_ioctl()
causes the kernel to crash.
Cc: Brian Hutchinson <b.hutchman@gmail.com>
Fixes: 1bb6aa56bb38 ("net: davinci_emac: Add support for fixed-link PHY")
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
Reviewed-by: Mugunthan V N <mugunthanvnm@ti.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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git://git.kernel.org/pub/scm/linux/kernel/git/kvalo/wireless-drivers
Kalle Valo says:
====================
wireless-drivers fixes for 4.6
ath9k
* fix a couple release old throughput regression on ar9281
iwlwifi
* add new device IDs for 8265
* fix a NULL pointer dereference when paging firmware asserts
* remove a WARNING on gscan capabilities
* fix MODULE_FIRMWARE for 8260
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
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When certain firmware variants are selected (via the sfboot utility) the
SFC7000 and SFC8000 series NICs don't support RSS. The driver still
tries (and fails) to insert filters with the RSS flag, and the NIC fails
to pass traffic.
When the firmware reports RSS_LIMITED suppress allocating a default RSS
context. The absence of an RSS context is picked up in filter insertion
and RSS flags are discarded.
Signed-off-by: Bert Kenward <bkenward@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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napi_disable() can not be called with bh disabled, move locking just
around myri10ge_ss_lock_napi() .
Patches fixes following bug:
[ 114.278378] BUG: sleeping function called from invalid context at net/core/dev.c:4383
<snip>
[ 114.313712] Call Trace:
[ 114.314943] [<ffffffff817010ce>] dump_stack+0x19/0x1b
[ 114.317673] [<ffffffff810ce7f3>] __might_sleep+0x173/0x230
[ 114.320566] [<ffffffff815b3117>] napi_disable+0x27/0x90
[ 114.323254] [<ffffffffa01e437f>] myri10ge_close+0xbf/0x3f0 [myri10ge]
Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com>
Acked-by: Hyong-Youb Kim <hykim@myri.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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mode->hdisplay * (var->bits_per_pixel + 7) gets evaluated before
the division, potentially making the pitch larger than it should
be.
Since the original intention is to do a div-round-up, just use
the macro instead.
Signed-off-by: Sinclair Yeh <syeh@vmware.com>
Reviewed-by: Thomas Hellstrom <thellstrom@vmware.com>
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Instead of calling vmw_cmd_ok, call vmw_cmd_dx_cid_check to
validate the context id for query commands.
Signed-off-by: Charmaine Lee <charmainel@vmware.com>
Reviewed-by: Sinclair Yeh <syeh@vmware.com>
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Fixes piglit tests nv_conditional_render-* crashes.
Signed-off-by: Charmaine Lee <charmainel@vmware.com>
Reviewed-by: Brian Paul <brianp@vmware.com>
Reviewed-by: Sinclair Yeh <syeh@vmware.com>
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The drivers/infiniband stack uses write() as a replacement for
bi-directional ioctl(). This is not safe. There are ways to
trigger write calls that result in the return structure that
is normally written to user space being shunted off to user
specified kernel memory instead.
For the immediate repair, detect and deny suspicious accesses to
the write API.
For long term, update the user space libraries and the kernel API
to something that doesn't present the same security vulnerabilities
(likely a structured ioctl() interface).
The impacted uAPI interfaces are generally only available if
hardware from drivers/infiniband is installed in the system.
Reported-by: Jann Horn <jann@thejh.net>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Jason Gunthorpe <jgunthorpe@obsidianresearch.com>
[ Expanded check to all known write() entry points ]
Cc: stable@vger.kernel.org
Signed-off-by: Doug Ledford <dledford@redhat.com>
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The ui device llseek had a mistake with SEEK_END and did
not fully follow seek semantics. Correct all this by
using a kernel supplied function for fixed size devices.
Cc: Al Viro <viro@ZenIV.linux.org.uk>
Reviewed-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: Dean Luick <dean.luick@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
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Attempting to free resources which have not been allocated and
initialized properly led to the following kernel backtrace:
BUG: unable to handle kernel NULL pointer dereference at (null)
IP: [<ffffffffa09658fe>] unlock_exp_tids.isra.8+0x2e/0x120 [hfi1]
PGD 852a43067 PUD 85d4a6067 PMD 0
Oops: 0000 [#1] SMP
CPU: 0 PID: 2831 Comm: osu_bw Tainted: G IO 3.12.18-wfr+ #1
task: ffff88085b15b540 ti: ffff8808588fe000 task.ti: ffff8808588fe000
RIP: 0010:[<ffffffffa09658fe>] [<ffffffffa09658fe>] unlock_exp_tids.isra.8+0x2e/0x120 [hfi1]
RSP: 0018:ffff8808588ffde0 EFLAGS: 00010282
RAX: 0000000000000000 RBX: ffff880858a31800 RCX: 0000000000000000
RDX: ffff88085d971bc0 RSI: ffff880858a318f8 RDI: ffff880858a318c0
RBP: ffff8808588ffe20 R08: 0000000000000000 R09: 0000000000000000
R10: ffff88087ffd6f40 R11: 0000000001100348 R12: ffff880852900000
R13: ffff880858a318c0 R14: 0000000000000000 R15: ffff88085d971be8
FS: 00007f4674e83740(0000) GS:ffff88087f400000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 000000085c377000 CR4: 00000000001407f0
Stack:
ffffffffa0941a71 ffff880858a318f8 ffff88085d971bc0 ffff880858a31800
ffff880852900000 ffff880858a31800 00000000003ffff7 ffff88085d971bc0
ffff8808588ffe60 ffffffffa09663fc ffff8808588ffe60 ffff880858a31800
Call Trace:
[<ffffffffa0941a71>] ? find_mmu_handler+0x51/0x70 [hfi1]
[<ffffffffa09663fc>] hfi1_user_exp_rcv_free+0x6c/0x120 [hfi1]
[<ffffffffa0932809>] hfi1_file_close+0x1a9/0x340 [hfi1]
[<ffffffff8116c189>] __fput+0xe9/0x270
[<ffffffff8116c35e>] ____fput+0xe/0x10
[<ffffffff81065707>] task_work_run+0xa7/0xe0
[<ffffffff81002969>] do_notify_resume+0x59/0x80
[<ffffffff814ffc1a>] int_signal+0x12/0x17
This commit re-arranges the context initialization code in a way that
would allow for context event flags to be used to determine whether
the context has been successfully initialized.
In turn, this can be used to skip the resource de-allocation if they
were never allocated in the first place.
Fixes: 3abb33ac6521 ("staging/hfi1: Add TID cache receive init and free funcs")
Reviewed-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: Mitko Haralanov <mitko.haralanov@intel.com>
Reviewed-by: Leon Romanovsky <leonro@mellanox.com.
Signed-off-by: Doug Ledford <dledford@redhat.com>
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The iowait_sdma_drained() callback lacked locking to
protect the qp s_flags field.
This causes the s_flags to be out of sync
on multiple CPUs, potentially corrupting the s_flags.
Fixes: a545f5308b6c ("staging/rdma/hfi: fix CQ completion order issue")
Reviewed-by: Sebastian Sanchez <sebastian.sanchez@intel.com>
Signed-off-by: Mike Marciniszyn <mike.marciniszyn@intel.com>
Reviewed-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
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call_send is used to determine whether to send immediately or schedule
a send for later. The current logic in rdmavt is inverted and has a
negative impact on the latency of the hfi1 and qib drivers. Fix this
regression by correctly calling send immediately when call_send is set.
Reviewed-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Reviewed-by: Mike Marciniszyn <mike.marciniszyn@intel.com>
Signed-off-by: Jubin John <jubin.john@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
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The routine used by the SDMA cache to handle already
cached nodes can extend an already existing node.
In its error handling code, the routine will unpin pages
when not all pages of the buffer extension were pinned.
There was a bug in that part of the routine, which would
mistakenly unpin pages from the original set rather than
the newly pinned pages.
This commit fixes that bug by offsetting the page array
to the proper place pointing at the beginning of the newly
pinned pages.
Reviewed-by: Dean Luick <dean.luick@intel.com>
Signed-off-by: Mitko Haralanov <mitko.haralanov@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
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The locking around the interval RB tree is designed to prevent
access to the tree while it's being modified. The locking in its
current form is too overzealous, which is causing a deadlock in
certain cases with the following backtrace:
Kernel panic - not syncing: Watchdog detected hard LOCKUP on cpu 0
CPU: 0 PID: 5836 Comm: IMB-MPI1 Tainted: G O 3.12.18-wfr+ #1
0000000000000000 ffff88087f206c50 ffffffff814f1caa ffffffff817b53f0
ffff88087f206cc8 ffffffff814ecd56 0000000000000010 ffff88087f206cd8
ffff88087f206c78 0000000000000000 0000000000000000 0000000000001662
Call Trace:
<NMI> [<ffffffff814f1caa>] dump_stack+0x45/0x56
[<ffffffff814ecd56>] panic+0xc2/0x1cb
[<ffffffff810d4370>] ? restart_watchdog_hrtimer+0x50/0x50
[<ffffffff810d4432>] watchdog_overflow_callback+0xc2/0xd0
[<ffffffff81109b4e>] __perf_event_overflow+0x8e/0x2b0
[<ffffffff8110a714>] perf_event_overflow+0x14/0x20
[<ffffffff8101c906>] intel_pmu_handle_irq+0x1b6/0x390
[<ffffffff814f927b>] perf_event_nmi_handler+0x2b/0x50
[<ffffffff814f8ad8>] nmi_handle.isra.3+0x88/0x180
[<ffffffff814f8d39>] do_nmi+0x169/0x310
[<ffffffff814f8177>] end_repeat_nmi+0x1e/0x2e
[<ffffffff81272600>] ? unmap_single+0x30/0x30
[<ffffffff814f780d>] ? _raw_spin_lock_irqsave+0x2d/0x40
[<ffffffff814f780d>] ? _raw_spin_lock_irqsave+0x2d/0x40
[<ffffffff814f780d>] ? _raw_spin_lock_irqsave+0x2d/0x40
<<EOE>> <IRQ> [<ffffffffa056c4a8>] hfi1_mmu_rb_search+0x38/0x70 [hfi1]
[<ffffffffa05919cb>] user_sdma_free_request+0xcb/0x120 [hfi1]
[<ffffffffa0593393>] user_sdma_txreq_cb+0x263/0x350 [hfi1]
[<ffffffffa057fad7>] ? sdma_txclean+0x27/0x1c0 [hfi1]
[<ffffffffa0593130>] ? user_sdma_send_pkts+0x1710/0x1710 [hfi1]
[<ffffffffa057fdd6>] sdma_make_progress+0x166/0x480 [hfi1]
[<ffffffff810762c9>] ? ttwu_do_wakeup+0x19/0xd0
[<ffffffffa0581c7e>] sdma_engine_interrupt+0x8e/0x100 [hfi1]
[<ffffffffa0546bdd>] sdma_interrupt+0x5d/0xa0 [hfi1]
[<ffffffff81097e57>] handle_irq_event_percpu+0x47/0x1d0
[<ffffffff81098017>] handle_irq_event+0x37/0x60
[<ffffffff8109aa5f>] handle_edge_irq+0x6f/0x120
[<ffffffff810044af>] handle_irq+0xbf/0x150
[<ffffffff8104c9b7>] ? irq_enter+0x17/0x80
[<ffffffff8150168d>] do_IRQ+0x4d/0xc0
[<ffffffff814f7c6a>] common_interrupt+0x6a/0x6a
<EOI> [<ffffffff81073524>] ? finish_task_switch+0x54/0xe0
[<ffffffff814f56c6>] __schedule+0x3b6/0x7e0
[<ffffffff810763a6>] __cond_resched+0x26/0x30
[<ffffffff814f5eda>] _cond_resched+0x3a/0x50
[<ffffffff814f4f82>] down_write+0x12/0x30
[<ffffffffa0591619>] hfi1_release_user_pages+0x69/0x90 [hfi1]
[<ffffffffa059173a>] sdma_rb_remove+0x9a/0xc0 [hfi1]
[<ffffffffa056c00d>] __mmu_rb_remove.isra.5+0x5d/0x70 [hfi1]
[<ffffffffa056c536>] hfi1_mmu_rb_remove+0x56/0x70 [hfi1]
[<ffffffffa059427b>] hfi1_user_sdma_process_request+0x74b/0x1160 [hfi1]
[<ffffffffa055c763>] hfi1_aio_write+0xc3/0x100 [hfi1]
[<ffffffff8116a14c>] do_sync_readv_writev+0x4c/0x80
[<ffffffff8116b58b>] do_readv_writev+0xbb/0x230
[<ffffffff811a9da1>] ? fsnotify+0x241/0x320
[<ffffffff81073524>] ? finish_task_switch+0x54/0xe0
[<ffffffff8116b795>] vfs_writev+0x35/0x60
[<ffffffff8116b8c9>] SyS_writev+0x49/0xc0
[<ffffffff810cd876>] ? __audit_syscall_exit+0x1f6/0x2a0
[<ffffffff814ff992>] system_call_fastpath+0x16/0x1b
As evident from the backtrace above, the process was being put to sleep
while holding the lock.
Limiting the scope of the lock only to the RB tree operation fixes the
above error allowing for proper locking and the process being put to
sleep when needed.
Reviewed-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Reviewed-by: Dean Luick <dean.luick@intel.com>
Signed-off-by: Mitko Haralanov <mitko.haralanov@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
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There is a potential kernel crash when the MMU notifier calls the
invalidation routines in the hfi1 pinned page caching code for sdma.
The invalidation routine could call the remove callback
for the node, which in turn ends up dereferencing the
current task_struct to get a pointer to the mm_struct.
However, the mm_struct pointer could be NULL resulting in
the following backtrace:
BUG: unable to handle kernel NULL pointer dereference at 00000000000000a8
IP: [<ffffffffa041f75a>] sdma_rb_remove+0xaa/0x100 [hfi1]
15
task: ffff88085e66e080 ti: ffff88085c244000 task.ti: ffff88085c244000
RIP: 0010:[<ffffffffa041f75a>] [<ffffffffa041f75a>] sdma_rb_remove+0xaa/0x100 [hfi1]
RSP: 0000:ffff88085c245878 EFLAGS: 00010002
RAX: 0000000000000000 RBX: ffff88105b9bbd40 RCX: ffffea003931a830
RDX: 0000000000000004 RSI: ffff88105754a9c0 RDI: ffff88105754a9c0
RBP: ffff88085c245890 R08: ffff88105b9bbd70 R09: 00000000fffffffb
R10: ffff88105b9bbd58 R11: 0000000000000013 R12: ffff88105754a9c0
R13: 0000000000000001 R14: 0000000000000001 R15: ffff88105b9bbd40
FS: 0000000000000000(0000) GS:ffff88107ef40000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000000000a8 CR3: 0000000001a0b000 CR4: 00000000001407e0
Stack:
ffff88105b9bbd40 ffff88080ec481a8 ffff88080ec481b8 ffff88085c2458c0
ffffffffa03fa00e ffff88080ec48190 ffff88080ed9cd00 0000000001024000
0000000000000000 ffff88085c245920 ffffffffa03fa0e7 0000000000000282
Call Trace:
[<ffffffffa03fa00e>] __mmu_rb_remove.isra.5+0x5e/0x70 [hfi1]
[<ffffffffa03fa0e7>] mmu_notifier_mem_invalidate+0xc7/0xf0 [hfi1]
[<ffffffffa03fa143>] mmu_notifier_page+0x13/0x20 [hfi1]
[<ffffffff81156dd0>] __mmu_notifier_invalidate_page+0x50/0x70
[<ffffffff81140bbb>] try_to_unmap_one+0x20b/0x470
[<ffffffff81141ee7>] try_to_unmap_anon+0xa7/0x120
[<ffffffff81141fad>] try_to_unmap+0x4d/0x60
[<ffffffff8111fd7b>] shrink_page_list+0x2eb/0x9d0
[<ffffffff81120ab3>] shrink_inactive_list+0x243/0x490
[<ffffffff81121491>] shrink_lruvec+0x4c1/0x640
[<ffffffff81121641>] shrink_zone+0x31/0x100
[<ffffffff81121b0f>] kswapd_shrink_zone.constprop.62+0xef/0x1c0
[<ffffffff811229e3>] kswapd+0x403/0x7e0
[<ffffffff811225e0>] ? shrink_all_memory+0xf0/0xf0
[<ffffffff81068ac0>] kthread+0xc0/0xd0
[<ffffffff81068a00>] ? insert_kthread_work+0x40/0x40
[<ffffffff814ff8ec>] ret_from_fork+0x7c/0xb0
[<ffffffff81068a00>] ? insert_kthread_work+0x40/0x40
To correct this, the mm_struct passed to us by the MMU notifier is
used (which is what should have been done to begin with). This avoids
the broken derefences and ensures that the correct mm_struct is used.
Reviewed-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Reviewed-by: Dean Luick <dean.luick@intel.com>
Signed-off-by: Mitko Haralanov <mitko.haralanov@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
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mlx5 devices (Connect-IB, ConnectX-4, ConnectX-4-LX) has a limitation
where rdma read work queue entries cannot exceed 512 bytes.
A rdma_read wqe needs to fit in 512 bytes:
- wqe control segment (16 bytes)
- rdma segment (16 bytes)
- scatter elements (16 bytes each)
So max_sge_rd should be: (512 - 16 - 16) / 16 = 30.
Cc: linux-stable@vger.kernel.org
Reported-by: Christoph Hellwig <hch@lst.de>
Tested-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Sagi Grimberg <sagig@grimberg.me>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
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The sti-cpufreq does unconditional registration of the cpufreq-dt driver
which causes issue on an multi-platform build. For example, on Vexpress
TC2 platform, we get the following error on boot:
cpu cpu0: OPP-v2 not supported
cpu cpu0: Not doing voltage scaling
cpu: dev_pm_opp_of_cpumask_add_table: couldn't find opp table
for cpu:0, -19
cpu cpu0: dev_pm_opp_get_max_volt_latency: Invalid regulator (-6)
...
arm_big_little: bL_cpufreq_register: Failed registering platform driver:
vexpress-spc, err: -17
The actual driver fails to initialise as cpufreq-dt is probed
successfully, which is incorrect. This issue can happen to any platform
not using cpufreq-dt in a multi-platform build.
This patch adds a check to do selective initialization of the driver.
Fixes: ab0ea257fc58 (cpufreq: st: Provide runtime initialised driver for ST's platforms)
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Acked-by: Lee Jones <lee.jones@linaro.org>
Cc: 4.5+ <stable@vger.kernel.org> # 4.5+
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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arm_cpuidle_suspend() may return -EOPNOTSUPP, or any value returned
by the cpu_ops/cpuidle_ops suspend call. arm_enter_idle_state() doesn't
update 'ret' with this value, meaning we always signal success to
cpuidle_enter_state(), causing it to update the usage counters as if we
succeeded.
Fixes: 191de17aa3c1 ("ARM64: cpuidle: Replace cpu_suspend by the common ARM/ARM64 function")
Signed-off-by: James Morse <james.morse@arm.com>
Acked-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Acked-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Cc: 4.1+ <stable@vger.kernel.org> # 4.1+
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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eMMC HS-DDR no longer works on the A80, despite it working when support
for this developed.
Disable it for now.
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
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... instead of just returning an error.
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Reviewed-by: Josh Durgin <jdurgin@redhat.com>
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A while ago, commit 9875201e1049 ("rbd: fix use-after free of
rbd_dev->disk") fixed rbd unmap vs notify race by introducing
an exported wrapper for flushing notifies and sticking it into
do_rbd_remove().
A similar problem exists on the rbd map path, though: the watch is
registered in rbd_dev_image_probe(), while the disk is set up quite
a few steps later, in rbd_dev_device_setup(). Nothing prevents
a notify from coming in and crashing on a NULL rbd_dev->disk:
BUG: unable to handle kernel NULL pointer dereference at 0000000000000050
Call Trace:
[<ffffffffa0508344>] rbd_watch_cb+0x34/0x180 [rbd]
[<ffffffffa04bd290>] do_event_work+0x40/0xb0 [libceph]
[<ffffffff8109d5db>] process_one_work+0x17b/0x470
[<ffffffff8109e3ab>] worker_thread+0x11b/0x400
[<ffffffff8109e290>] ? rescuer_thread+0x400/0x400
[<ffffffff810a5acf>] kthread+0xcf/0xe0
[<ffffffff810b41b3>] ? finish_task_switch+0x53/0x170
[<ffffffff810a5a00>] ? kthread_create_on_node+0x140/0x140
[<ffffffff81645dd8>] ret_from_fork+0x58/0x90
[<ffffffff810a5a00>] ? kthread_create_on_node+0x140/0x140
RIP [<ffffffffa050828a>] rbd_dev_refresh+0xfa/0x180 [rbd]
If an error occurs during rbd map, we have to error out, potentially
tearing down a watch. Just like on rbd unmap, notifies have to be
flushed, otherwise rbd_watch_cb() may end up trying to read in the
image header after rbd_dev_image_release() has run:
Assertion failure in rbd_dev_header_info() at line 4722:
rbd_assert(rbd_image_format_valid(rbd_dev->image_format));
Call Trace:
[<ffffffff81cccee0>] ? rbd_parent_request_create+0x150/0x150
[<ffffffff81cd4e59>] rbd_dev_refresh+0x59/0x390
[<ffffffff81cd5229>] rbd_watch_cb+0x69/0x290
[<ffffffff81fde9bf>] do_event_work+0x10f/0x1c0
[<ffffffff81107799>] process_one_work+0x689/0x1a80
[<ffffffff811076f7>] ? process_one_work+0x5e7/0x1a80
[<ffffffff81132065>] ? finish_task_switch+0x225/0x640
[<ffffffff81107110>] ? pwq_dec_nr_in_flight+0x2b0/0x2b0
[<ffffffff81108c69>] worker_thread+0xd9/0x1320
[<ffffffff81108b90>] ? process_one_work+0x1a80/0x1a80
[<ffffffff8111b02d>] kthread+0x21d/0x2e0
[<ffffffff8111ae10>] ? kthread_stop+0x550/0x550
[<ffffffff82022802>] ret_from_fork+0x22/0x40
[<ffffffff8111ae10>] ? kthread_stop+0x550/0x550
RIP [<ffffffff81ccd8f9>] rbd_dev_header_info+0xa19/0x1e30
To fix this, a) check if RBD_DEV_FLAG_EXISTS is set before calling
revalidate_disk(), b) move ceph_osdc_flush_notifies() call into
rbd_dev_header_unwatch_sync() to cover rbd map error paths and c) turn
header read-in into a critical section. The latter also happens to
take care of rbd map foo@bar vs rbd snap rm foo@bar race.
Fixes: http://tracker.ceph.com/issues/15490
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Reviewed-by: Josh Durgin <jdurgin@redhat.com>
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The pf2vf_resp_wq is a global so it has to be created at init
and destroyed at exit, instead of per device.
Cc: <stable@vger.kernel.org>
Tested-by: Suresh Marikkannu <sureshx.marikkannu@intel.com>
Signed-off-by: Tadeusz Struk <tadeusz.struk@intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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Power allocator's parameters are S32 type, so use %d to print them.
Acked-by: Javi Merino <javi.merino@arm.com>
Signed-off-by: Leo Yan <leo.yan@linaro.org>
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
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When calculate temperature, old code firstly do division and then
convert to "millicelsius" unit. This will lose resolution and only can
read back temperature with "Celsius" unit.
So firstly scale step value to "millicelsius" and then do division, so
finally we can increase resolution for temperature value. Also refine
the calculation from temperature value to step value.
Signed-off-by: Leo Yan <leo.yan@linaro.org>
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
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The MIC VOP driver does two successive reads from user space to read a
variable length data structure. Kernel memory corruption can result if
the data structure changes between the two reads. This patch disallows
the chance of this happening.
Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=116651
Reported by: Pengfei Wang <wpengfeinudt@gmail.com>
Reviewed-by: Sudeep Dutt <sudeep.dutt@intel.com>
Signed-off-by: Ashutosh Dixit <ashutosh.dixit@intel.com>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Since fwnode may hold ERR_PTR(-ENODEV) or it may be NULL,
the fwnode type checks is_of_node(), is_acpi_node() and is
is_pset_node() need to consider it. Using IS_ERR_OR_NULL()
to check it.
Fixes: 0d67e0fa1664 (device property: fix for a case of use-after-free)
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
[ rjw: Subject & changelog ]
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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If PAGE_SIZE is bigger than BNXT_RX_PAGE_SIZE, that means the native CPU
page is bigger than the maximum length of the RX BD. Divide the page
into multiple 32K buffers for the aggregation ring.
Add an offset field in the bnxt_sw_rx_agg_bd struct to keep track of the
page offset of each buffer. Since each page can be referenced by multiple
buffer entries, call get_page() as needed to get the proper reference
count.
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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The RX BD length field of this device is 16-bit, so the largest buffer
size is 65535. For LRO and GRO, we allocate native CPU pages for the
aggregation ring buffers. It won't work if the native CPU page size is
64K or bigger.
We fix this by defining BNXT_RX_PAGE_SIZE to be native CPU page size
up to 32K. Replace PAGE_SIZE with BNXT_RX_PAGE_SIZE in all appropriate
places related to the rx aggregation ring logic.
The next patch will add additional logic to divide the page into 32K
chunks for aggrgation ring buffers if PAGE_SIZE is bigger than
BNXT_RX_PAGE_SIZE.
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Only MSI-X can be used on a VF. The driver should fail initialization
if it cannot successfully enable MSI-X.
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux
Pull i2c fixes from Wolfram Sang:
"I2C has one buildfix, one ABBA deadlock fix, and three simple 'add ID'
patches"
* 'i2c/for-current' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux:
i2c: exynos5: Fix possible ABBA deadlock by keeping I2C clock prepared
i2c: cpm: Fix build break due to incompatible pointer types
i2c: ismt: Add Intel DNV PCI ID
i2c: xlp9xx: add support for Broadcom Vulcan
i2c: rk3x: add support for rk3228
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V2: disable all vm interrupts in late_init()
Signed-off-by: Flora Cui <Flora.Cui@amd.com>
Reviewed-by: Ken Wang <Qingqing.Wang@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
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It will help identify problematic boards.
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
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This reverts commit bedf2a65c1aa8fb29ba8527fd00c0f68ec1f55f1.
See the radeon revert for an extended description.
Cc: stable@vger.kernel.org
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When crtc/timing is disabled on boot the dig block
should be stopped in order ignore timing from crtc,
reset the steering fifo otherwise we get display
corruption or hung in dp sst mode.
v2: agd: fix coding style
Signed-off-by: Vitaly Prosyak <vitaly.prosyak@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
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Fixes the following scenario:
1. Page table bo allocated in vram and linked to man->lru.
tbo->list_kref.refcount=2
2. Page table bo is swapped out and removed from man->lru.
tbo->list_kref.refcount=1
3. Command submission from userspace. Page table bo is moved
to vram. ttm_bo_move_to_lru_tail() link it to man->lru and
don't increase the kref count.
Reviewed-by: Thomas Hellstrom <thellstrom@vmware.com>
Signed-off-by: Flora Cui <Flora.Cui@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
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git://git.infradead.org/users/dvhart/linux-platform-drivers-x86
Pull x86 platform driver fix from Darren Hart:
"Fix regression caused by hotkey enabling value in toshiba_acpi"
* tag 'platform-drivers-x86-v4.6-3' of git://git.infradead.org/users/dvhart/linux-platform-drivers-x86:
toshiba_acpi: Fix regression caused by hotkey enabling value
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Somehow my SNB GT1 (Dell XPS 8300) gets very unhappy around
GPU hangs if the RPS EI/thresholds aren't suitably aligned.
It seems like scheduling/timer interupts stop working somehow
and things get stuck eg. in usleep_range().
I bisected the problem down to
commit 8a5864377b12 ("drm/i915/skl: Restructured the gen6_set_rps_thresholds function")
I observed that before all the values were at least multiples of 25,
but afterwards they are not. And rounding things up to the next multiple
of 25 does seem to help, so lets' do that. I also tried roundup(..., 5)
but that wasn't sufficient. Also I have no idea if we might need this sort of
thing on gen9+ as well.
These are the original EI/thresholds:
LOW_POWER
GEN6_RP_UP_EI 12500
GEN6_RP_UP_THRESHOLD 11800
GEN6_RP_DOWN_EI 25000
GEN6_RP_DOWN_THRESHOLD 21250
BETWEEN
GEN6_RP_UP_EI 10250
GEN6_RP_UP_THRESHOLD 9225
GEN6_RP_DOWN_EI 25000
GEN6_RP_DOWN_THRESHOLD 18750
HIGH_POWER
GEN6_RP_UP_EI 8000
GEN6_RP_UP_THRESHOLD 6800
GEN6_RP_DOWN_EI 25000
GEN6_RP_DOWN_THRESHOLD 15000
These are after 8a5864377b12:
LOW_POWER
GEN6_RP_UP_EI 12500
GEN6_RP_UP_THRESHOLD 11875
GEN6_RP_DOWN_EI 25000
GEN6_RP_DOWN_THRESHOLD 21250
BETWEEN
GEN6_RP_UP_EI 10156
GEN6_RP_UP_THRESHOLD 9140
GEN6_RP_DOWN_EI 25000
GEN6_RP_DOWN_THRESHOLD 18750
HIGH_POWER
GEN6_RP_UP_EI 7812
GEN6_RP_UP_THRESHOLD 6640
GEN6_RP_DOWN_EI 25000
GEN6_RP_DOWN_THRESHOLD 15000
And these are what we have after this patch:
LOW_POWER
GEN6_RP_UP_EI 12500
GEN6_RP_UP_THRESHOLD 11875
GEN6_RP_DOWN_EI 25000
GEN6_RP_DOWN_THRESHOLD 21250
BETWEEN
GEN6_RP_UP_EI 10175
GEN6_RP_UP_THRESHOLD 9150
GEN6_RP_DOWN_EI 25000
GEN6_RP_DOWN_THRESHOLD 18750
HIGH_POWER
GEN6_RP_UP_EI 7825
GEN6_RP_UP_THRESHOLD 6650
GEN6_RP_DOWN_EI 25000
GEN6_RP_DOWN_THRESHOLD 15000
Cc: stable@vger.kernel.org
Cc: Akash Goel <akash.goel@intel.com>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Testcase: igt/kms_pipe_crc_basic/hang-read-crc-pipe-B
Fixes: 8a5864377b12 ("drm/i915/skl: Restructured the gen6_set_rps_thresholds function")
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1461159836-9108-1-git-send-email-ville.syrjala@linux.intel.com
Acked-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Patrik Jakobsson <patrik.jakobsson@linux.intel.com>
(cherry picked from commit 8a292d016d1cc4938ff14b4df25328230b08a408)
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
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This patch does the following:
- Fakes live status of HDMI as connected (even if that's not).
While testing certain (monitor + cable) combinations with
various intel platforms, it seems that live status register
doesn't work reliably on some older devices. So limit the
live_status check for HDMI detection, only for platforms
from gen7 onwards.
V2: restrict faking live_status to certain platforms
V3: (Ville)
- keep the debug message for !live_status case
- fix indentation of comment
- remove "warning" from the debug message
(Jani)
- Change format of fix details in the commit message
Fixes: 237ed86c693d ("drm/i915: Check live status before reading edid")
Cc: stable@vger.kernel.org # v4.4
Suggested-by: Ville Syrjala <ville.syrjala@linux.intel.com>
Signed-off-by: Shashank Sharma <shashank.sharma@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1461237606-16491-1-git-send-email-shashank.sharma@intel.com
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
(cherry picked from commit 4f4a8185011773f7520d9916c6857db946e7f9d1)
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
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It was noticed on bug #94087 that module parameter
i915.edp_vswing=2 that should override the VBT setting
to use default voltage swing (400 mV) was not applied
for Broadwell.
This patch provides a fix for this by checking if default
i.e. higher voltage swing is requested to be used and
applies the DDI translations table for DP instead of eDP
(low vswing) table.
v2: Combine two if statements into one (Jani)
v3: Change dev_priv->edp_low_vswing to use dev_priv->vbt.edp.low_vswing
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=94087
Signed-off-by: Mika Kahola <mika.kahola@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1461155942-7749-1-git-send-email-mika.kahola@intel.com
Cc: stable@vger.kernel.org
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
(cherry picked from commit 00983519214b61c1b9371ec2ed55a4dde773e384)
[Jani: s/dev_priv->vbt.edp.low_vswing/dev_priv->edp_low_vswing/ to backport]
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
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The driver's VDD on/off logic assumes that whenever the VDD is on we
also hold an AUX power domain reference. Since BIOS can leave the VDD on
during booting and resuming and on DDI platforms we won't take a
corresponding power reference, the above assumption won't hold on those
platforms and an eventual delayed VDD off work will do an extraneous AUX
power domain put resulting in a refcount underflow. Fix this the same
way we did this for non-DDI DP encoders:
commit 6d93c0c41760c0 ("drm/i915: fix VDD state tracking after system
resume")
At the same time call the DP encoder suspend handler the same way as the
non-DDI DP encoders do to flush any pending VDD off work. Leaving the
work running may cause a HW access where we don't expect this (at a point
where power domains are suspended already).
While at it remove an unnecessary function call indirection.
This fixed for me AUX refcount underflow problems on BXT during
suspend/resume.
CC: Ville Syrjälä <ville.syrjala@linux.intel.com>
CC: stable@vger.kernel.org
Signed-off-by: Imre Deak <imre.deak@intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1460963062-13211-4-git-send-email-imre.deak@intel.com
(cherry picked from commit bf93ba67e9c05882f05b7ca2d773cfc8bf462c2a)
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
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During system resume we depended on pci_enable_device() also putting the
device into PCI D0 state. This won't work if the PCI device was already
enabled but still in D3 state. This is because pci_enable_device() is
refcounted and will not change the HW state if called with a non-zero
refcount. Leaving the device in D3 will make all subsequent device
accesses fail.
This didn't cause a problem most of the time, since we resumed with an
enable refcount of 0. But it fails at least after module reload because
after that we also happen to leak a PCI device enable reference: During
probing we call drm_get_pci_dev() which will enable the PCI device, but
during device removal drm_put_dev() won't disable it. This is a bug of
its own in DRM core, but without much harm as it only leaves the PCI
device enabled. Fixing it is also a bit more involved, due to DRM
mid-layering and because it affects non-i915 drivers too. The fix in
this patch is valid regardless of the problem in DRM core.
v2:
- Add a code comment about the relation of this fix to the freeze/thaw
vs. the suspend/resume phases. (Ville)
- Add a code comment about the inconsistent ordering of set power state
and device enable calls. (Chris)
CC: Ville Syrjälä <ville.syrjala@linux.intel.com>
CC: Chris Wilson <chris@chris-wilson.co.uk>
CC: stable@vger.kernel.org
Signed-off-by: Imre Deak <imre.deak@intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1460979954-14503-1-git-send-email-imre.deak@intel.com
(cherry picked from commit 44410cd0bfb26bde9288da34c190cc9267d42a20)
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
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The legacy cursor ioctl expects to be asynchronous with respect to other
screen updates, in particular page flips. As X updates the cursor from a
signal context, if the cursor blocks then it will stall both the input
and output chains causing bad stuttering and horrible UX.
Reported-and-tested-by: Rafael Ristovski <rafael.ristovski@gmail.com>
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=94980
Fixes: 5008e874edd34 ("drm/i915: Make wait_for_flips interruptible.")
Suggested-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: Jani Nikula <jani.nikula@intel.com>
Cc: stable@vger.kernel.org
Link: http://patchwork.freedesktop.org/patch/msgid/1460922166-20292-1-git-send-email-chris@chris-wilson.co.uk
Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Reviewed-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
(cherry picked from commit acf4e84d6167317ff21be5c03e1ea76ea5783701)
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
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The sclp_ctl_ioctl_sccb function uses two copy_from_user calls to
retrieve the sclp request from user space. The first copy_from_user
fetches the length of the request which is stored in the first two
bytes of the request. The second copy_from_user gets the complete
sclp request, but this copies the length field a second time.
A malicious user may have changed the length in the meantime.
Reported-by: Pengfei Wang <wpengfeinudt@gmail.com>
Reviewed-by: Michael Holzheu <holzheu@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
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When detaching contexts, we may still have interrupts in the system
which are yet to be delivered to any CPU and be acked in the PSL.
This can result in a subsequent unrelated process getting an spurious
IRQ or an interrupt for a non-existent context.
This polls the PSL to ensure that the PSL is clear of IRQs for the
detached context, before removing the context from the idr.
Signed-off-by: Michael Neuling <mikey@neuling.org>
Tested-by: Andrew Donnellan <andrew.donnellan@au1.ibm.com>
Acked-by: Ian Munsie <imunsie@au1.ibm.com>
Tested-by: Vaibhav Jain <vaibhav@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
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Keep IRQ mappings on context teardown. This won't leak IRQs as if we
allocate the mapping again, the generic code will give the same
mapping used last time.
Doing this works around a race in the generic code. Masking the
interrupt introduces a race which can crash the kernel or result in
IRQ that is never EOIed. The lost of EOI results in all subsequent
mappings to the same HW IRQ never receiving an interrupt.
We've seen this race with cxl test cases which are doing heavy context
startup and teardown at the same time as heavy interrupt load.
A fix to the generic code is being investigated also.
Signed-off-by: Michael Neuling <mikey@neuling.org>
Cc: stable@vger.kernel.org # 3.8
Tested-by: Andrew Donnellan <andrew.donnellan@au1.ibm.com>
Acked-by: Ian Munsie <imunsie@au1.ibm.com>
Tested-by: Vaibhav Jain <vaibhav@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
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virtio_gpu was failing to send vblank events when using the atomic IOCTL
with the DRM_MODE_PAGE_FLIP_EVENT flag set. This patch fixes each and
enables atomic pageflips updates.
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
Cc: stable@vger.kernel.org
Signed-off-by: Dave Airlie <airlied@redhat.com>
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Some hubs are forgetful, and end up forgetting whatever GUID we set
previously after we do a suspend/resume cycle. This can lead to
hotplugging breaking (along with probably other things) since the hub
will start sending connection notifications with the wrong GUID. As
such, we need to check on resume whether or not the GUID the hub is
giving us is valid.
Signed-off-by: Lyude <cpaul@redhat.com>
Reviewed-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/1460580618-7421-1-git-send-email-cpaul@redhat.com
Cc: stable@vger.kernel.org
Signed-off-by: Dave Airlie <airlied@redhat.com>
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We can thank KASAN for finding this, otherwise I probably would have spent
hours on it. This fixes a somewhat harder to trigger kernel panic, occuring
while enabling MST where the port we were currently updating the payload on
would have all of it's refs dropped before we finished what we were doing:
==================================================================
BUG: KASAN: use-after-free in drm_dp_update_payload_part1+0xb3f/0xdb0 [drm_kms_helper] at addr ffff8800d29de018
Read of size 4 by task Xorg/973
=============================================================================
BUG kmalloc-2048 (Tainted: G B W ): kasan: bad access detected
-----------------------------------------------------------------------------
INFO: Allocated in drm_dp_add_port+0x1aa/0x1ed0 [drm_kms_helper] age=16477 cpu=0 pid=2175
___slab_alloc+0x472/0x490
__slab_alloc+0x20/0x40
kmem_cache_alloc_trace+0x151/0x190
drm_dp_add_port+0x1aa/0x1ed0 [drm_kms_helper]
drm_dp_send_link_address+0x526/0x960 [drm_kms_helper]
drm_dp_check_and_send_link_address+0x1ac/0x210 [drm_kms_helper]
drm_dp_mst_link_probe_work+0x77/0xd0 [drm_kms_helper]
process_one_work+0x562/0x1350
worker_thread+0xd9/0x1390
kthread+0x1c5/0x260
ret_from_fork+0x22/0x40
INFO: Freed in drm_dp_free_mst_port+0x50/0x60 [drm_kms_helper] age=7521 cpu=0 pid=2175
__slab_free+0x17f/0x2d0
kfree+0x169/0x180
drm_dp_free_mst_port+0x50/0x60 [drm_kms_helper]
drm_dp_destroy_connector_work+0x2b8/0x490 [drm_kms_helper]
process_one_work+0x562/0x1350
worker_thread+0xd9/0x1390
kthread+0x1c5/0x260
ret_from_fork+0x22/0x40
which on this T460s, would eventually lead to kernel panics in somewhat
random places later in intel_mst_enable_dp() if we got lucky enough.
Signed-off-by: Lyude <cpaul@redhat.com>
Cc: stable@vger.kernel.org
Signed-off-by: Dave Airlie <airlied@redhat.com>
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Pull networking fixes from David Miller:
1) Handle v4/v6 mixed sockets properly in soreuseport, from Craig
Gallak.
2) Bug fixes for the new macsec facility (missing kmalloc NULL checks,
missing locking around netdev list traversal, etc.) from Sabrina
Dubroca.
3) Fix handling of host routes on ifdown in ipv6, from David Ahern.
4) Fix double-fdput in bpf verifier. From Jann Horn.
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (31 commits)
bpf: fix double-fdput in replace_map_fd_with_map_ptr()
net: ipv6: Delete host routes on an ifdown
Revert "ipv6: Revert optional address flusing on ifdown."
net/mlx4_en: fix spurious timestamping callbacks
net: dummy: remove note about being Y by default
cxgbi: fix uninitialized flowi6
ipv6: Revert optional address flusing on ifdown.
ipv4/fib: don't warn when primary address is missing if in_dev is dead
net/mlx5: Add pci shutdown callback
net/mlx5_core: Remove static from local variable
net/mlx5e: Use vport MTU rather than physical port MTU
net/mlx5e: Fix minimum MTU
net/mlx5e: Device's mtu field is u16 and not int
net/mlx5_core: Add ConnectX-5 to list of supported devices
net/mlx5e: Fix MLX5E_100BASE_T define
net/mlx5_core: Fix soft lockup in steering error flow
qlcnic: Update version to 5.3.64
net: stmmac: socfpga: Remove re-registration of reset controller
macsec: fix netlink attribute validation
macsec: add missing macsec prefix in uapi
...
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