提交 · e3fb9d84fdd1a67a4c9b50a74267077105feea16 · openanolis / cloud-kernel

17 12月, 2018 40 次提交

ixgbe: recognize 1000BaseLX SFP modules as 1Gbps · e3fb9d84

由 Josh Elsasser 提交于 11月 24, 2018

[ Upstream commit a8bf879af7b1999eba36303ce9cc60e0e7dd816c ]

Add the two 1000BaseLX enum values to the X550's check for 1Gbps modules,
allowing the core driver code to establish a link over this SFP type.

This is done by the out-of-tree driver but the fix wasn't in mainline.

Fixes: e23f3336 ("ixgbe: Fix 1G and 10G link stability for X550EM_x SFP+”)
Fixes: 6a14ee0c ("ixgbe: Add X550 support function pointers")
Signed-off-by: NJosh Elsasser <jelsasser@appneta.com>
Tested-by: NAndrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: NJeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: NSasha Levin <sashal@kernel.org>

e3fb9d84

igb: fix uninitialized variables · 4b0f9f88

由 Yunjian Wang 提交于 11月 06, 2018

[ Upstream commit e4c39f7926b4de355f7df75651d75003806aae09 ]

This patch fixes the variable 'phy_word' may be used uninitialized.
Signed-off-by: NYunjian Wang <wangyunjian@huawei.com>
Tested-by: NAaron Brown <aaron.f.brown@intel.com>
Signed-off-by: NJeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: NSasha Levin <sashal@kernel.org>

4b0f9f88

cachefiles: Fix page leak in cachefiles_read_backing_file while vmscan is active · eee2269f

由 Kiran Kumar Modukuri 提交于 9月 24, 2018

[ Upstream commit 9a24ce5b66f9c8190d63b15f4473600db4935f1f ]

[Description]

In a heavily loaded system where the system pagecache is nearing memory
limits and fscache is enabled, pages can be leaked by fscache while trying
read pages from cachefiles backend.  This can happen because two
applications can be reading same page from a single mount, two threads can
be trying to read the backing page at same time.  This results in one of
the threads finding that a page for the backing file or netfs file is
already in the radix tree.  During the error handling cachefiles does not
clean up the reference on backing page, leading to page leak.

[Fix]
The fix is straightforward, to decrement the reference when error is
encountered.

  [dhowells: Note that I've removed the clearance and put of newpage as
   they aren't attested in the commit message and don't appear to actually
   achieve anything since a new page is only allocated is newpage!=NULL and
   any residual new page is cleared before returning.]

[Testing]
I have tested the fix using following method for 12+ hrs.

1) mkdir -p /mnt/nfs ; mount -o vers=3,fsc <server_ip>:/export /mnt/nfs
2) create 10000 files of 2.8MB in a NFS mount.
3) start a thread to simulate heavy VM presssure
   (while true ; do echo 3 > /proc/sys/vm/drop_caches ; sleep 1 ; done)&
4) start multiple parallel reader for data set at same time
   find /mnt/nfs -type f | xargs -P 80 cat > /dev/null &
   find /mnt/nfs -type f | xargs -P 80 cat > /dev/null &
   find /mnt/nfs -type f | xargs -P 80 cat > /dev/null &
   ..
   ..
   find /mnt/nfs -type f | xargs -P 80 cat > /dev/null &
   find /mnt/nfs -type f | xargs -P 80 cat > /dev/null &
5) finally check using cat /proc/fs/fscache/stats | grep -i pages ;
   free -h , cat /proc/meminfo and page-types -r -b lru
   to ensure all pages are freed.
Reviewed-by: NDaniel Axtens <dja@axtens.net>
Signed-off-by: NShantanu Goel <sgoel01@yahoo.com>
Signed-off-by: NKiran Kumar Modukuri <kiran.modukuri@gmail.com>
[dja: forward ported to current upstream]
Signed-off-by: NDaniel Axtens <dja@axtens.net>
Signed-off-by: NDavid Howells <dhowells@redhat.com>
Signed-off-by: NSasha Levin <sashal@kernel.org>

eee2269f

fscache: Fix race in fscache_op_complete() due to split atomic_sub & read · a4a7a0d7

由 kiran.modukuri 提交于 11月 26, 2018

[ Upstream commit 3f2b7b9035107d6096ea438ea3d97dcf0481b6d2 ]

The code in fscache_retrieval_complete is using atomic_sub followed by an
atomic_read:

        atomic_sub(n_pages, &op->n_pages);
        if (atomic_read(&op->n_pages) <= 0)
                fscache_op_complete(&op->op, true);

This causes two threads doing a decrement of n_pages to race with each
other seeing the op->refcount 0 at same time - and they end up calling
fscache_op_complete() in both the threads leading to an assertion failure.

Fix this by using atomic_sub_return_relaxed() instead of two calls.  Note
that I'm using 'relaxed' rather than, say, 'release' as there aren't
multiple variables that appear to need ordering across the release.

The oops looks something like:

FS-Cache: Assertion failed
FS-Cache: 0 > 0 is false
...
kernel BUG at /usr/src/linux-4.4.0/fs/fscache/operation.c:449!
...
Workqueue: fscache_operation fscache_op_work_func [fscache]
...
RIP: 0010:[<ffffffffc037eacd>] fscache_op_complete+0x10d/0x180 [fscache]
...
Call Trace:
 [<ffffffffc1464cf9>] cachefiles_read_copier+0x3a9/0x410 [cachefiles]
 [<ffffffffc037e272>] fscache_op_work_func+0x22/0x50 [fscache]
 [<ffffffff81096da0>] process_one_work+0x150/0x3f0
 [<ffffffff8109751a>] worker_thread+0x11a/0x470
 [<ffffffff81808e59>] ? __schedule+0x359/0x980
 [<ffffffff81097400>] ? rescuer_thread+0x310/0x310
 [<ffffffff8109cdd6>] kthread+0xd6/0xf0
 [<ffffffff8109cd00>] ? kthread_park+0x60/0x60
 [<ffffffff8180d0cf>] ret_from_fork+0x3f/0x70
 [<ffffffff8109cd00>] ? kthread_park+0x60/0x60

This seen this in 4.4.x kernels and the same bug affects fscache in latest
upstreams kernels.

Fixes: 1bb4b7f9 ("FS-Cache: The retrieval remaining-pages counter needs to be atomic_t")
Signed-off-by: NKiran Kumar Modukuri <kiran.modukuri@gmail.com>
Signed-off-by: NDavid Howells <dhowells@redhat.com>
Signed-off-by: NSasha Levin <sashal@kernel.org>

a4a7a0d7

cachefiles: Fix an assertion failure when trying to update a failed object · 5132f913

由 David Howells 提交于 11月 27, 2018

[ Upstream commit e6bc06faf64a83384cc0abc537df954c9d3ff942 ]

If cachefiles gets an error other then ENOENT when trying to look up an
object in the cache (in this case, EACCES), the object state machine will
eventually transition to the DROP_OBJECT state.

This state invokes fscache_drop_object() which tries to sync the auxiliary
data with the cache (this is done lazily since commit 402cb8dd) on an
incomplete cache object struct.

The problem comes when cachefiles_update_object_xattr() is called to
rewrite the xattr holding the data.  There's an assertion there that the
cache object points to a dentry as we're going to update its xattr.  The
assertion trips, however, as dentry didn't get set.

Fix the problem by skipping the update in cachefiles if the object doesn't
refer to a dentry.  A better way to do it could be to skip the update from
the DROP_OBJECT state handler in fscache, but that might deny the cache the
opportunity to update intermediate state.

If this error occurs, the kernel log includes lines that look like the
following:

 CacheFiles: Lookup failed error -13
 CacheFiles:
 CacheFiles: Assertion failed
 ------------[ cut here ]------------
 kernel BUG at fs/cachefiles/xattr.c:138!
 ...
 Workqueue: fscache_object fscache_object_work_func [fscache]
 RIP: 0010:cachefiles_update_object_xattr.cold.4+0x18/0x1a [cachefiles]
 ...
 Call Trace:
  cachefiles_update_object+0xdd/0x1c0 [cachefiles]
  fscache_update_aux_data+0x23/0x30 [fscache]
  fscache_drop_object+0x18e/0x1c0 [fscache]
  fscache_object_work_func+0x74/0x2b0 [fscache]
  process_one_work+0x18d/0x340
  worker_thread+0x2e/0x390
  ? pwq_unbound_release_workfn+0xd0/0xd0
  kthread+0x112/0x130
  ? kthread_bind+0x30/0x30
  ret_from_fork+0x35/0x40

Note that there are actually two issues here: (1) EACCES happened on a
cache object and (2) an oops occurred.  I think that the second is a
consequence of the first (it certainly looks like it ought to be).  This
patch only deals with the second.

Fixes: 402cb8dd ("fscache: Attach the index key and aux data to the cookie")
Reported-by: NZhibin Li <zhibli@redhat.com>
Signed-off-by: NDavid Howells <dhowells@redhat.com>
Signed-off-by: NSasha Levin <sashal@kernel.org>

5132f913

ALSA: usb-audio: Add vendor and product name for Dell WD19 Dock · 815899cf

由 Hui Wang 提交于 11月 28, 2018

[ Upstream commit 8159a6a4a7d2a092d5375f695ecfca22b4562b5f ]

Like the Dell WD15 Dock, the WD19 Dock (0bda:402e) doens't provide
useful string for the vendor and product names too. In order to share
the UCM with WD15, here we keep the profile_name same as the WD15.
Signed-off-by: NHui Wang <hui.wang@canonical.com>
Signed-off-by: NTakashi Iwai <tiwai@suse.de>
Signed-off-by: NSasha Levin <sashal@kernel.org>

815899cf

netfilter: nf_tables: deactivate expressions in rule replecement routine · e5f42e06

由 Taehee Yoo 提交于 11月 28, 2018

[ Upstream commit ca089878 ]

There is no expression deactivation call from the rule replacement path,
hence, chain counter is not decremented. A few steps to reproduce the
problem:

   %nft add table ip filter
   %nft add chain ip filter c1
   %nft add chain ip filter c1
   %nft add rule ip filter c1 jump c2
   %nft replace rule ip filter c1 handle 3 accept
   %nft flush ruleset

<jump c2> expression means immediate NFT_JUMP to chain c2.
Reference count of chain c2 is increased when the rule is added.

When rule is deleted or replaced, the reference counter of c2 should be
decreased via nft_rule_expr_deactivate() which calls
nft_immediate_deactivate().

Splat looks like:
[  214.396453] WARNING: CPU: 1 PID: 21 at net/netfilter/nf_tables_api.c:1432 nf_tables_chain_destroy.isra.38+0x2f9/0x3a0 [nf_tables]
[  214.398983] Modules linked in: nf_tables nfnetlink
[  214.398983] CPU: 1 PID: 21 Comm: kworker/1:1 Not tainted 4.20.0-rc2+ #44
[  214.398983] Workqueue: events nf_tables_trans_destroy_work [nf_tables]
[  214.398983] RIP: 0010:nf_tables_chain_destroy.isra.38+0x2f9/0x3a0 [nf_tables]
[  214.398983] Code: 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 8e 00 00 00 48 8b 7b 58 e8 e1 2c 4e c6 48 89 df e8 d9 2c 4e c6 eb 9a <0f> 0b eb 96 0f 0b e9 7e fe ff ff e8 a7 7e 4e c6 e9 a4 fe ff ff e8
[  214.398983] RSP: 0018:ffff8881152874e8 EFLAGS: 00010202
[  214.398983] RAX: 0000000000000001 RBX: ffff88810ef9fc28 RCX: ffff8881152876f0
[  214.398983] RDX: dffffc0000000000 RSI: 1ffff11022a50ede RDI: ffff88810ef9fc78
[  214.398983] RBP: 1ffff11022a50e9d R08: 0000000080000000 R09: 0000000000000000
[  214.398983] R10: 0000000000000000 R11: 0000000000000000 R12: 1ffff11022a50eba
[  214.398983] R13: ffff888114446e08 R14: ffff8881152876f0 R15: ffffed1022a50ed6
[  214.398983] FS:  0000000000000000(0000) GS:ffff888116400000(0000) knlGS:0000000000000000
[  214.398983] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  214.398983] CR2: 00007fab9bb5f868 CR3: 000000012aa16000 CR4: 00000000001006e0
[  214.398983] Call Trace:
[  214.398983]  ? nf_tables_table_destroy.isra.37+0x100/0x100 [nf_tables]
[  214.398983]  ? __kasan_slab_free+0x145/0x180
[  214.398983]  ? nf_tables_trans_destroy_work+0x439/0x830 [nf_tables]
[  214.398983]  ? kfree+0xdb/0x280
[  214.398983]  nf_tables_trans_destroy_work+0x5f5/0x830 [nf_tables]
[ ... ]

Fixes: bb7b40ae ("netfilter: nf_tables: bogus EBUSY in chain deletions")
Reported by: Christoph Anton Mitterer <calestyo@scientia.net>
Link: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=914505
Link: https://bugzilla.kernel.org/show_bug.cgi?id=201791Signed-off-by: NTaehee Yoo <ap420073@gmail.com>
Signed-off-by: NPablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: NSasha Levin <sashal@kernel.org>

e5f42e06

usb: gadget: u_ether: fix unsafe list iteration · 6d665dab

由 Marek Szyprowski 提交于 11月 19, 2018

[ Upstream commit c9287fa657b3328b4549c0ab39ea7f197a3d6a50 ]

list_for_each_entry_safe() is not safe for deleting entries from the
list if the spin lock, which protects it, is released and reacquired during
the list iteration. Fix this issue by replacing this construction with
a simple check if list is empty and removing the first entry in each
iteration. This is almost equivalent to a revert of the commit mentioned in
the Fixes: tag.

This patch fixes following issue:
--->8---
Unable to handle kernel NULL pointer dereference at virtual address 00000104
pgd = (ptrval)
[00000104] *pgd=00000000
Internal error: Oops: 817 [#1] PREEMPT SMP ARM
Modules linked in:
CPU: 1 PID: 84 Comm: kworker/1:1 Not tainted 4.20.0-rc2-next-20181114-00009-g8266b35ec404 #1061
Hardware name: SAMSUNG EXYNOS (Flattened Device Tree)
Workqueue: events eth_work
PC is at rx_fill+0x60/0xac
LR is at _raw_spin_lock_irqsave+0x50/0x5c
pc : [<c065fee0>]    lr : [<c0a056b8>]    psr: 80000093
sp : ee7fbee8  ip : 00000100  fp : 00000000
r10: 006000c0  r9 : c10b0ab0  r8 : ee7eb5c0
r7 : ee7eb614  r6 : ee7eb5ec  r5 : 000000dc  r4 : ee12ac00
r3 : ee12ac24  r2 : 00000200  r1 : 60000013  r0 : ee7eb5ec
Flags: Nzcv  IRQs off  FIQs on  Mode SVC_32  ISA ARM  Segment none
Control: 10c5387d  Table: 6d5dc04a  DAC: 00000051
Process kworker/1:1 (pid: 84, stack limit = 0x(ptrval))
Stack: (0xee7fbee8 to 0xee7fc000)
...
[<c065fee0>] (rx_fill) from [<c0143b7c>] (process_one_work+0x200/0x738)
[<c0143b7c>] (process_one_work) from [<c0144118>] (worker_thread+0x2c/0x4c8)
[<c0144118>] (worker_thread) from [<c014a8a4>] (kthread+0x128/0x164)
[<c014a8a4>] (kthread) from [<c01010b4>] (ret_from_fork+0x14/0x20)
Exception stack(0xee7fbfb0 to 0xee7fbff8)
...
---[ end trace 64480bc835eba7d6 ]---

Fixes: fea14e68 ("usb: gadget: u_ether: use better list accessors")
Signed-off-by: NMarek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: NFelipe Balbi <felipe.balbi@linux.intel.com>
Signed-off-by: NSasha Levin <sashal@kernel.org>

6d665dab

net: thunderx: fix NULL pointer dereference in nic_remove · 227b1745

由 Lorenzo Bianconi 提交于 11月 26, 2018

[ Upstream commit 24a6d2dd263bc910de018c78d1148b3e33b94512 ]

Fix a possible NULL pointer dereference in nic_remove routine
removing the nicpf module if nic_probe fails.
The issue can be triggered with the following reproducer:

$rmmod nicvf
$rmmod nicpf

[  521.412008] Unable to handle kernel access to user memory outside uaccess routines at virtual address 0000000000000014
[  521.422777] Mem abort info:
[  521.425561]   ESR = 0x96000004
[  521.428624]   Exception class = DABT (current EL), IL = 32 bits
[  521.434535]   SET = 0, FnV = 0
[  521.437579]   EA = 0, S1PTW = 0
[  521.440730] Data abort info:
[  521.443603]   ISV = 0, ISS = 0x00000004
[  521.447431]   CM = 0, WnR = 0
[  521.450417] user pgtable: 4k pages, 48-bit VAs, pgdp = 0000000072a3da42
[  521.457022] [0000000000000014] pgd=0000000000000000
[  521.461916] Internal error: Oops: 96000004 [#1] SMP
[  521.511801] Hardware name: GIGABYTE H270-T70/MT70-HD0, BIOS T49 02/02/2018
[  521.518664] pstate: 80400005 (Nzcv daif +PAN -UAO)
[  521.523451] pc : nic_remove+0x24/0x88 [nicpf]
[  521.527808] lr : pci_device_remove+0x48/0xd8
[  521.532066] sp : ffff000013433cc0
[  521.535370] x29: ffff000013433cc0 x28: ffff810f6ac50000
[  521.540672] x27: 0000000000000000 x26: 0000000000000000
[  521.545974] x25: 0000000056000000 x24: 0000000000000015
[  521.551274] x23: ffff8007ff89a110 x22: ffff000001667070
[  521.556576] x21: ffff8007ffb170b0 x20: ffff8007ffb17000
[  521.561877] x19: 0000000000000000 x18: 0000000000000025
[  521.567178] x17: 0000000000000000 x16: 000000000000010ffc33ff98 x8 : 0000000000000000
[  521.593683] x7 : 0000000000000000 x6 : 0000000000000001
[  521.598983] x5 : 0000000000000002 x4 : 0000000000000003
[  521.604284] x3 : ffff8007ffb17184 x2 : ffff8007ffb17184
[  521.609585] x1 : ffff000001662118 x0 : ffff000008557be0
[  521.614887] Process rmmod (pid: 1897, stack limit = 0x00000000859535c3)
[  521.621490] Call trace:
[  521.623928]  nic_remove+0x24/0x88 [nicpf]
[  521.627927]  pci_device_remove+0x48/0xd8
[  521.631847]  device_release_driver_internal+0x1b0/0x248
[  521.637062]  driver_detach+0x50/0xc0
[  521.640628]  bus_remove_driver+0x60/0x100
[  521.644627]  driver_unregister+0x34/0x60
[  521.648538]  pci_unregister_driver+0x24/0xd8
[  521.652798]  nic_cleanup_module+0x14/0x111c [nicpf]
[  521.657672]  __arm64_sys_delete_module+0x150/0x218
[  521.662460]  el0_svc_handler+0x94/0x110
[  521.666287]  el0_svc+0x8/0xc
[  521.669160] Code: aa1e03e0 9102c295 d503201f f9404eb3 (b9401660)

Fixes: 4863dea3 ("net: Adding support for Cavium ThunderX network controller")
Signed-off-by: NLorenzo Bianconi <lorenzo.bianconi@redhat.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>
Signed-off-by: NSasha Levin <sashal@kernel.org>

227b1745

x86/kvm/vmx: fix old-style function declaration · bf1b47f3

由 Yi Wang 提交于 11月 08, 2018

[ Upstream commit 1e4329ee ]

The inline keyword which is not at the beginning of the function
declaration may trigger the following build warnings, so let's fix it:

arch/x86/kvm/vmx.c:1309:1: warning: ‘inline’ is not at beginning of declaration [-Wold-style-declaration]
arch/x86/kvm/vmx.c:5947:1: warning: ‘inline’ is not at beginning of declaration [-Wold-style-declaration]
arch/x86/kvm/vmx.c:5985:1: warning: ‘inline’ is not at beginning of declaration [-Wold-style-declaration]
arch/x86/kvm/vmx.c:6023:1: warning: ‘inline’ is not at beginning of declaration [-Wold-style-declaration]
Signed-off-by: NYi Wang <wang.yi59@zte.com.cn>
Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>
Signed-off-by: NSasha Levin <sashal@kernel.org>

bf1b47f3

KVM: x86: fix empty-body warnings · d6b1692d

由 Yi Wang 提交于 11月 08, 2018

[ Upstream commit 354cb410 ]

We get the following warnings about empty statements when building
with 'W=1':

arch/x86/kvm/lapic.c:632:53: warning: suggest braces around empty body in an ‘if’ statement [-Wempty-body]
arch/x86/kvm/lapic.c:1907:42: warning: suggest braces around empty body in an ‘if’ statement [-Wempty-body]
arch/x86/kvm/lapic.c:1936:65: warning: suggest braces around empty body in an ‘if’ statement [-Wempty-body]
arch/x86/kvm/lapic.c:1975:44: warning: suggest braces around empty body in an ‘if’ statement [-Wempty-body]

Rework the debug helper macro to get rid of these warnings.
Signed-off-by: NYi Wang <wang.yi59@zte.com.cn>
Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>
Signed-off-by: NSasha Levin <sashal@kernel.org>

d6b1692d

KVM: VMX: Update shared MSRs to be saved/restored on MSR_EFER.LMA changes · 3c7670d5

由 Liran Alon 提交于 11月 20, 2018

[ Upstream commit f48b4711dd6e1cf282f9dfd159c14a305909c97c ]

When guest transitions from/to long-mode by modifying MSR_EFER.LMA,
the list of shared MSRs to be saved/restored on guest<->host
transitions is updated (See vmx_set_efer() call to setup_msrs()).

On every entry to guest, vcpu_enter_guest() calls
vmx_prepare_switch_to_guest(). This function should also take care
of setting the shared MSRs to be saved/restored. However, the
function does nothing in case we are already running with loaded
guest state (vmx->loaded_cpu_state != NULL).

This means that even when guest modifies MSR_EFER.LMA which results
in updating the list of shared MSRs, it isn't being taken into account
by vmx_prepare_switch_to_guest() because it happens while we are
running with loaded guest state.

To fix above mentioned issue, add a flag to mark that the list of
shared MSRs has been updated and modify vmx_prepare_switch_to_guest()
to set shared MSRs when running with host state *OR* list of shared
MSRs has been updated.

Note that this issue was mistakenly introduced by commit
678e315e ("KVM: vmx: add dedicated utility to access guest's
kernel_gs_base") because previously vmx_set_efer() always called
vmx_load_host_state() which resulted in vmx_prepare_switch_to_guest() to
set shared MSRs.

Fixes: 678e315e ("KVM: vmx: add dedicated utility to access guest's kernel_gs_base")
Reported-by: NEyal Moscovici <eyal.moscovici@oracle.com>
Reviewed-by: NMihai Carabas <mihai.carabas@oracle.com>
Reviewed-by: NLiam Merwick <liam.merwick@oracle.com>
Reviewed-by: NJim Mattson <jmattson@google.com>
Signed-off-by: NLiran Alon <liran.alon@oracle.com>
Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>
Signed-off-by: NSasha Levin <sashal@kernel.org>

3c7670d5

netfilter: nf_conncount: remove wrong condition check routine · 8038f92d

由 Taehee Yoo 提交于 11月 25, 2018

[ Upstream commit 53ca0f2f ]

All lists that reach the tree_nodes_free() function have both zero
counter and true dead flag. The reason for this is that lists to be
release are selected by nf_conncount_gc_list() which already decrements
the list counter and sets on the dead flag. Therefore, this if statement
in tree_nodes_free() is unnecessary and wrong.

Fixes: 31568ec0 ("netfilter: nf_conncount: fix list_del corruption in conn_free")
Signed-off-by: NTaehee Yoo <ap420073@gmail.com>
Signed-off-by: NPablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: NSasha Levin <sashal@kernel.org>

8038f92d

netfilter: nat: fix double register in masquerade modules · 5517d4c6

由 Taehee Yoo 提交于 11月 22, 2018

[ Upstream commit 095faf45e64be00bff4da2d6182dface3d69c9b7 ]

There is a reference counter to ensure that masquerade modules register
notifiers only once. However, the existing reference counter approach is
not safe, test commands are:

   while :
   do
   	   modprobe ip6t_MASQUERADE &
	   modprobe nft_masq_ipv6 &
	   modprobe -rv ip6t_MASQUERADE &
	   modprobe -rv nft_masq_ipv6 &
   done

numbers below represent the reference counter.
--------------------------------------------------------
CPU0        CPU1        CPU2        CPU3        CPU4
[insmod]    [insmod]    [rmmod]     [rmmod]     [insmod]
--------------------------------------------------------
0->1
register    1->2
            returns     2->1
			returns     1->0
                                                0->1
                                                register <--
                                    unregister
--------------------------------------------------------

The unregistation of CPU3 should be processed before the
registration of CPU4.

In order to fix this, use a mutex instead of reference counter.

splat looks like:
[  323.869557] watchdog: BUG: soft lockup - CPU#0 stuck for 22s! [modprobe:1381]
[  323.869574] Modules linked in: nf_tables(+) nf_nat_ipv6(-) nf_nat nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 n]
[  323.869574] irq event stamp: 194074
[  323.898930] hardirqs last  enabled at (194073): [<ffffffff90004a0d>] trace_hardirqs_on_thunk+0x1a/0x1c
[  323.898930] hardirqs last disabled at (194074): [<ffffffff90004a29>] trace_hardirqs_off_thunk+0x1a/0x1c
[  323.898930] softirqs last  enabled at (182132): [<ffffffff922006ec>] __do_softirq+0x6ec/0xa3b
[  323.898930] softirqs last disabled at (182109): [<ffffffff90193426>] irq_exit+0x1a6/0x1e0
[  323.898930] CPU: 0 PID: 1381 Comm: modprobe Not tainted 4.20.0-rc2+ #27
[  323.898930] RIP: 0010:raw_notifier_chain_register+0xea/0x240
[  323.898930] Code: 3c 03 0f 8e f2 00 00 00 44 3b 6b 10 7f 4d 49 bc 00 00 00 00 00 fc ff df eb 22 48 8d 7b 10 488
[  323.898930] RSP: 0018:ffff888101597218 EFLAGS: 00000206 ORIG_RAX: ffffffffffffff13
[  323.898930] RAX: 0000000000000000 RBX: ffffffffc04361c0 RCX: 0000000000000000
[  323.898930] RDX: 1ffffffff26132ae RSI: ffffffffc04aa3c0 RDI: ffffffffc04361d0
[  323.898930] RBP: ffffffffc04361c8 R08: 0000000000000000 R09: 0000000000000001
[  323.898930] R10: ffff8881015972b0 R11: fffffbfff26132c4 R12: dffffc0000000000
[  323.898930] R13: 0000000000000000 R14: 1ffff110202b2e44 R15: ffffffffc04aa3c0
[  323.898930] FS:  00007f813ed41540(0000) GS:ffff88811ae00000(0000) knlGS:0000000000000000
[  323.898930] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  323.898930] CR2: 0000559bf2c9f120 CR3: 000000010bc80000 CR4: 00000000001006f0
[  323.898930] Call Trace:
[  323.898930]  ? atomic_notifier_chain_register+0x2d0/0x2d0
[  323.898930]  ? down_read+0x150/0x150
[  323.898930]  ? sched_clock_cpu+0x126/0x170
[  323.898930]  ? nf_tables_core_module_init+0xe4/0xe4 [nf_tables]
[  323.898930]  ? nf_tables_core_module_init+0xe4/0xe4 [nf_tables]
[  323.898930]  register_netdevice_notifier+0xbb/0x790
[  323.898930]  ? __dev_close_many+0x2d0/0x2d0
[  323.898930]  ? __mutex_unlock_slowpath+0x17f/0x740
[  323.898930]  ? wait_for_completion+0x710/0x710
[  323.898930]  ? nf_tables_core_module_init+0xe4/0xe4 [nf_tables]
[  323.898930]  ? up_write+0x6c/0x210
[  323.898930]  ? nf_tables_core_module_init+0xe4/0xe4 [nf_tables]
[  324.127073]  ? nf_tables_core_module_init+0xe4/0xe4 [nf_tables]
[  324.127073]  nft_chain_filter_init+0x1e/0xe8a [nf_tables]
[  324.127073]  nf_tables_module_init+0x37/0x92 [nf_tables]
[ ... ]

Fixes: 8dd33cc9 ("netfilter: nf_nat: generalize IPv4 masquerading support for nf_tables")
Fixes: be6b635c ("netfilter: nf_nat: generalize IPv6 masquerading support for nf_tables")
Signed-off-by: NTaehee Yoo <ap420073@gmail.com>
Signed-off-by: NPablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: NSasha Levin <sashal@kernel.org>

5517d4c6

netfilter: add missing error handling code for register functions · 18218f82

由 Taehee Yoo 提交于 11月 22, 2018

[ Upstream commit 584eab291c67894cb17cc87544b9d086228ea70f ]

register_{netdevice/inetaddr/inet6addr}_notifier may return an error
value, this patch adds the code to handle these error paths.
Signed-off-by: NTaehee Yoo <ap420073@gmail.com>
Signed-off-by: NPablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: NSasha Levin <sashal@kernel.org>

18218f82

IB/mlx5: Fix page fault handling for MW · 4f03e063

由 Artemy Kovalyov 提交于 11月 25, 2018

[ Upstream commit 75b7b86bdb0df37e08e44b6c1f99010967f81944 ]

Memory windows are implemented with an indirect MKey, when a page fault
event comes for a MW Mkey we need to find the MR at the end of the list of
the indirect MKeys by iterating on all items from the first to the last.

The offset calculated during this process has to be zeroed after the first
iteration or the next iteration will start from a wrong address, resulting
incorrect ODP faulting behavior.

Fixes: db570d7d ("IB/mlx5: Add ODP support to MW")
Signed-off-by: NArtemy Kovalyov <artemyko@mellanox.com>
Signed-off-by: NMoni Shoua <monis@mellanox.com>
Signed-off-by: NLeon Romanovsky <leonro@mellanox.com>
Signed-off-by: NJason Gunthorpe <jgg@mellanox.com>
Signed-off-by: NSasha Levin <sashal@kernel.org>

4f03e063

netfilter: ipv6: Preserve link scope traffic original oif · 9838090d

由 Alin Nastac 提交于 11月 21, 2018

[ Upstream commit 508b09046c0f21678652fb66fd1e9959d55591d2 ]

When ip6_route_me_harder is invoked, it resets outgoing interface of:
  - link-local scoped packets sent by neighbor discovery
  - multicast packets sent by MLD host
  - multicast packets send by MLD proxy daemon that sets outgoing
    interface through IPV6_PKTINFO ipi6_ifindex

Link-local and multicast packets must keep their original oif after
ip6_route_me_harder is called.
Signed-off-by: NAlin Nastac <alin.nastac@gmail.com>
Signed-off-by: NPablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: NSasha Levin <sashal@kernel.org>

9838090d

drm/meson: add support for 1080p25 mode · bf6f1276

由 Christian Hewitt 提交于 11月 21, 2018

[ Upstream commit 31e1ab494559fb46de304cc6c2aed1528f94b298 ]

This essential mode for PAL users is missing, so add it.

Fixes: 335e3713 ("drm/meson: Add support for HDMI venc modes and settings")
Signed-off-by: NChristian Hewitt <christianshewitt@gmail.com>
Acked-by: NNeil Armstrong <narmstrong@baylibre.com>
Signed-off-by: NNeil Armstrong <narmstrong@baylibre.com>
Link: https://patchwork.freedesktop.org/patch/msgid/1542793169-13008-1-git-send-email-christianshewitt@gmail.comSigned-off-by: NSean Paul <seanpaul@chromium.org>
Signed-off-by: NSasha Levin <sashal@kernel.org>

bf6f1276

thunderbolt: Prevent root port runtime suspend during NVM upgrade · 5dda1e7d

由 Mika Westerberg 提交于 11月 26, 2018

[ Upstream commit 1830b6eeda1fed42d85f2388f79c926331a9b2d0 ]

During NVM upgrade process the host router is hot-removed for a short
while. During this time it is possible that the root port is moved into
D3cold which would be fine if the root port could trigger PME on itself.
However, many systems actually do not implement it so what happens is
that the root port goes into D3cold and never wakes up unless userspace
does PCI config space access, such as running 'lscpi'.

For this reason we explicitly prevent the root port from runtime
suspending during NVM upgrade.
Signed-off-by: NMika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: NSasha Levin <sashal@kernel.org>

5dda1e7d

USB: omap_udc: fix rejection of out transfers when DMA is used · 9ca88f3c