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Replace dev_kfree_skb with dev_kfree_skb_any in uli562x_start_xmit
that can be called in hard irq and other contexts, when the packet is
dropped.
Replace dev_kfree_skb with dev_consume_skb_any in uli562x_start_xmit
that can be called in hard irq and other contexts, when the packet is
transmitted.
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
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Replace dev_kfree_skb with dev_kfree_skb_any in dmfe_start_xmit that
can be called in hard irq and other contexts, when the packet is
dropped.
Replace dev_kfree_skb with dev_consume_skb_any in dmfe_start_xmit that
can be called in hard irq and other contexts, when the packet is
transmitted.
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
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Replace dev_kfree_skb with dev_consume_skb_any in dm9000_start_xmit
that can be called in hard irq and other contexts, on the path
that successfully transmits the packet.
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
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Replace dev_kfree_skb with dev_kfree_skb_any in enic_hard_start_xmit
that can be called in hard irq and other contexts.
enic_hard_start_xmit only frees the skb when dropping it.
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
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Replace dev_kfree_skb with dev_consume_skb_any in net_send_packet that
can be called in hard irq and other contexts.
net_send_packet consumes (not drops) the skb of interest.
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
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Replace kfree_skb with dev_consume_skb_any in free_tx_desc that can be
called in hard irq and other contexts. dev_consume_skb_any is used
as this function consumes successfully transmitted skbs.
Replace dev_kfree_skb with dev_kfree_skb_any in t4vf_eth_xmit that can
be called in hard irq and other contexts, on paths that drop the skb.
Replace dev_kfree_skb with dev_consume_skb_any in t4vf_eth_xmit that can
be called in hard irq and other contexts, on paths that successfully
transmit the skb.
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
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Replace kfree_skb with dev_consume_skb_any in free_tx_desc that can be
called in hard irq and other contexts. dev_consume_skb_any is used
as this function consumes successfully transmitted skbs.
Replace dev_kfree_skb with dev_kfree_skb_any in t4_eth_xmit that can
be called in hard irq and other contexts, on paths that drop the skb.
Replace dev_kfree_skb with dev_consume_skb_any in t4_eth_xmit that can
be called in hard irq and other contexts, on paths that successfully
transmit the skb.
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
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Replace kfree_skb with dev_consume_skb_any in free_tx_desc, and
write_tx_pkt_wr that can be called in hard irq and other contexts.
Replace dev_kfree_skb with dev_kfree_skb_any in t3_eth_xmit that can
be called in hard irq and other contexts.
dev_kfree_skb is replaced with dev_kfree_skb_any in t3_eth_xmit as
that location is a packet drop, while kfree_skb in free_tx_desc,
and in write_tx_pkt_wr are places where packets are consumed
in a healthy manner.
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
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Replace dev_kfree_skb with dev_consume_skb_any in xgmac_tx_complete
that can be called in hard irq and other contexts.
Replace dev_kfree_skb with dev_kfree_skb_any in xgmac_xmit that can
be called in hard irq and other contexts.
dev_consume_skb_any is used in xgamc_tx_complete as skbs that reach
there have been successfully transmitted, dev_kfree_skby_any is used
in xgmac_xmit as skbs that are freed there are being dropped.
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
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Replace kfree_skb with dev_kfree_skb_any in macb_start_xmit that can
be called in hard irq and other contexts.
macb_start_xmit only frees skbs when dropping them so
dev_kfree_skb_any is used.
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
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Replace dev_kfree_skb with dev_kfree_skb_any in bnad_start_xmit that
can be called in hard irq and other contexts.
dev_kfree_skb_any is used as bnad_start_xmit only frees skbs when to
drop them, normally transmitted packets are handled elsewhere.
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
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The call path: atl1c_xmit_frame, atlc_tx_rollback, atl1c_clean_buffer
can not be tell at compile time if it will be invoked from hard irq
or other context, as atl1c_xmit_frame does not know. So remove
the logic that passes the compile time knowledge into al1c_clean_buffer
and figure out it out at runtime with dev_consume_skb_any.
Replace dev_kfree_skb with dev_kfree_skb_any in atl1c_xmit_frame that
can be called in hard irq and other contexts.
Replace dev_kfree_skb and dev_kfree_skb_irq with dev_consume_skb_any
in atl1c_clean_buffer that can be called in hard irq and other
contexts.
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
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Replace dev_kfree_skb with dev_kfree_skb_any in alx_start_xmit that
can be called in hard irq and other contexts.
dev_kfree_skb_any is used as alx_start_xmit only frees skbs
when dropping them.
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
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Replace dev_kfree_skb with dev_kfree_skb_any in pcnet32_start_xmit
that can be called in hard irq and other contexts.
dev_kfree_skb_any is used as pcnet32_start_xmit only frees an
skb when it drops a packet during transmit.
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
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Replace dev_kfree_skb with dev_consume_skb_any in lance_start_xmit
that can be called in hard irq and other contexts.
dev_consume_skb_any is used as lance_start_xmit always immediately
consumes the skb.
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
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Replace dev_kfree_skb with dev_consume_skb_any in am79c961 that can
be called in hard irq and other contexts.
dev_consume_skb_any is used as am79c961_sendpacket always
immediately consumes the skb.
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
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Replace dev_kfree_skb with dev_consume_skb_any in emacs_start_xmit
which can be called in hard irq and other contexts.
emac_start_xmit always transmits the packet making dev_consume_skb
the appropriate function to call.
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux
Pull parisc updates from Helge Deller:
- revert parts of the latest patch regarding font selection with STICON
console
- wire up the utimes() syscall for parisc
- remove the unused parisc tmpalias code and unnecessary arch*relax
defines
* 'parisc-3.14' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux:
parisc: locks: remove redundant arch_*_relax operations
parisc: wire up sys_utimes
parisc: Remove unused CONFIG_PARISC_TMPALIAS code
partly revert commit 8a10bc9: parisc/sti_console: prefer Linux fonts over built-in ROM fonts
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Pull sparc fixes from David Miller:
1) Do serial locking in a way that makes things clear that these are
IRQ spinlocks.
2) Conversion to generic idle loop broke first generation Niagara
machines, need to have %pil interrupts enabled during cpu yield
hypervisor call.
3) Do not use magic constants for iterations over tsb tables, from Doug
Wilson.
4) Fix erroneous truncation of 64-bit system call return values to
32-bit. From Dave Kleikamp.
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc:
sparc64: Make sure %pil interrupts are enabled during hypervisor yield.
sparc64:tsb.c:use array size macro rather than number
sparc64: don't treat 64-bit syscall return codes as 32-bit
sparc: serial: Clean up the locking for -rt
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Add a new clk_ops->debug_init method to allow a clock hardware
driver to populate the clock's debugfs directory with entries
beyond those common for every clock.
Signed-off-by: Alex Elder <elder@linaro.org>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
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Pull networking fixes from David Miller:
1) OpenVswitch's lookup_datapath() returns error pointers, so don't
check against NULL. From Jiri Pirko.
2) pfkey_compile_policy() code path tries to do a GFP_KERNEL allocation
under RCU locks, fix by using GFP_ATOMIC when necessary. From
Nikolay Aleksandrov.
3) phy_suspend() indirectly passes uninitialized data into the ethtool
get wake-on-land implementations. Fix from Sebastian Hesselbarth.
4) CPSW driver unregisters CPTS twice, fix from Benedikt Spranger.
5) If SKB allocation of reply packet fails, vxlan's arp_reduce() defers
a NULL pointer. Fix from David Stevens.
6) IPV6 neigh handling in vxlan doesn't validate the destination
address properly, and it builds a packet with the src and dst
reversed. Fix also from David Stevens.
7) Fix spinlock recursion during subscription failures in TIPC stack,
from Erik Hugne.
8) Revert buggy conversion of davinci_emac to devm_request_irq, from
Chrstian Riesch.
9) Wrong flags passed into forwarding database netlink notifications,
from Nicolas Dichtel.
10) The netpoll neighbour soliciation handler checks wrong ethertype,
needs to be ETH_P_IPV6 rather than ETH_P_ARP. Fix from Li RongQing.
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (34 commits)
tipc: fix spinlock recursion bug for failed subscriptions
vxlan: fix nonfunctional neigh_reduce()
net: davinci_emac: Fix rollback of emac_dev_open()
net: davinci_emac: Replace devm_request_irq with request_irq
netpoll: fix the skb check in pkt_is_ns
net: micrel : ks8851-ml: add vdd-supply support
ip6mr: fix mfc notification flags
ipmr: fix mfc notification flags
rtnetlink: fix fdb notification flags
tcp: syncookies: do not use getnstimeofday()
netlink: fix setsockopt in mmap examples in documentation
openvswitch: Correctly report flow used times for first 5 minutes after boot.
via-rhine: Disable device in error path
ATHEROS-ATL1E: Convert iounmap to pci_iounmap
vxlan: fix potential NULL dereference in arp_reduce()
cnic: Update version to 2.5.20 and copyright year.
cnic,bnx2i,bnx2fc: Fix inconsistent use of page size
cnic: Use proper ulp_ops for per device operations.
net: cdc_ncm: fix control message ordering
ipv6: ip6_append_data_mtu do not handle the mtu of the second fragment properly
...
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Replace dev_kfree_skb with dev_consume_skb_any in _tx_reclaim_skb that
can be called in hard irq and other contexts.
dev_consume_skb is used as _tx_reclaim_skb is called after a packet
has been successfully transmitted.
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
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Replace dev_kfree_skb with dev_consume_skb_any in __ei_start_xmit that
can be called in hard irq and other contexts.
dev_consume_skb is used as in this simple driver the skb is always
immediately consumed, there are no drops.
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
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Replace dev_kfree_skb with dev_consume_skb_any in vortex_start_xmit
as it can be called in hard irq and other contexts.
dev_consume_skb_any is used when vortext_start_xmit directly consumes
the packet instead of dmaing it to the device.
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
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Replace dev_kfree_skb with dev_consume_skb_any in el3_start_xmit
as it can be called in hard irq and other contexts.
dev_consume_skb_any is used as on this simple hardware the
skb is consumed directly by the start_xmit function.
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
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Replace dev_kfree_skb with dev_consume_skb_any in uml_net_start_xmit
as it can be called in hard irq and other contexts.
dev_consume_skb_any is used as uml_net_start_xmit typically
consumes (not drops) packets.
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
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of_find_node_by_name() walks over all nodes and can thus walk outside of
the parent node. Use of_get_child_by_name() instead.
Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
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If parent device does not have of_node set the s2mps11_clk_parse_dt()
returned NULL. This NULL was later passed to of_clk_add_provider() which
dereferenced it in pr_debug() call.
Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
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Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Tejun Heo <tj@kernel.org>
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commit 340a30c514 "s2255drv: upgrade to videobuf2" changed the API
used by the s2255 driver, but did not modify the Kconfig statement,
which can lead to build errors when no other driver already uses
VIDEOBUF2_VMALLOC. This patch does the necessary Kconfig change.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
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There is request_irq() in init_device(), but the interrupt is not removed
on failure paths. The patch adds proper error handling.
Found by Linux Driver Verification project (linuxtesting.org).
Signed-off-by: Alexey Khoroshilov <khoroshilov@ispras.ru>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
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That tuner driver is mainly for DVB API, but there is some V4L2 API
controls for SDR usage. Make driver compile conditional so that V4L2
is not mandatory. Without the V4L2 support driver is build as a DVB
only, without SDR controls.
Fixes following errors reported by kbuild test robot:
ERROR: "v4l2_ctrl_auto_cluster" [drivers/media/tuners/e4000.ko] undefined!
ERROR: "v4l2_ctrl_new_std" [drivers/media/tuners/e4000.ko] undefined!
ERROR: "v4l2_ctrl_handler_init_class" [drivers/media/tuners/e4000.ko] undefined!
ERROR: "v4l2_ctrl_handler_free" [drivers/media/tuners/e4000.ko] undefined!
Reported-by: kbuild test robot <fengguang.wu@intel.com>
Cc: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Antti Palosaari <crope@iki.fi>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
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If a topology event subscription fails for any reason, such as out
of memory, max number reached or because we received an invalid
request the correct behavior is to terminate the subscribers
connection to the topology server. This is currently broken and
produces the following oops:
[27.953662] tipc: Subscription rejected, illegal request
[27.955329] BUG: spinlock recursion on CPU#1, kworker/u4:0/6
[27.957066] lock: 0xffff88003c67f408, .magic: dead4ead, .owner: kworker/u4:0/6, .owner_cpu: 1
[27.958054] CPU: 1 PID: 6 Comm: kworker/u4:0 Not tainted 3.14.0-rc6+ #5
[27.960230] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[27.960874] Workqueue: tipc_rcv tipc_recv_work [tipc]
[27.961430] ffff88003c67f408 ffff88003de27c18 ffffffff815c0207 ffff88003de1c050
[27.962292] ffff88003de27c38 ffffffff815beec5 ffff88003c67f408 ffffffff817f0a8a
[27.963152] ffff88003de27c58 ffffffff815beeeb ffff88003c67f408 ffffffffa0013520
[27.964023] Call Trace:
[27.964292] [<ffffffff815c0207>] dump_stack+0x45/0x56
[27.964874] [<ffffffff815beec5>] spin_dump+0x8c/0x91
[27.965420] [<ffffffff815beeeb>] spin_bug+0x21/0x26
[27.965995] [<ffffffff81083df6>] do_raw_spin_lock+0x116/0x140
[27.966631] [<ffffffff815c6215>] _raw_spin_lock_bh+0x15/0x20
[27.967256] [<ffffffffa0008540>] subscr_conn_shutdown_event+0x20/0xa0 [tipc]
[27.968051] [<ffffffffa000fde4>] tipc_close_conn+0xa4/0xb0 [tipc]
[27.968722] [<ffffffffa00101ba>] tipc_conn_terminate+0x1a/0x30 [tipc]
[27.969436] [<ffffffffa00089a2>] subscr_conn_msg_event+0x1f2/0x2f0 [tipc]
[27.970209] [<ffffffffa0010000>] tipc_receive_from_sock+0x90/0xf0 [tipc]
[27.970972] [<ffffffffa000fa79>] tipc_recv_work+0x29/0x50 [tipc]
[27.971633] [<ffffffff8105dbf5>] process_one_work+0x165/0x3e0
[27.972267] [<ffffffff8105e869>] worker_thread+0x119/0x3a0
[27.972896] [<ffffffff8105e750>] ? manage_workers.isra.25+0x2a0/0x2a0
[27.973622] [<ffffffff810648af>] kthread+0xdf/0x100
[27.974168] [<ffffffff810647d0>] ? kthread_create_on_node+0x1a0/0x1a0
[27.974893] [<ffffffff815ce13c>] ret_from_fork+0x7c/0xb0
[27.975466] [<ffffffff810647d0>] ? kthread_create_on_node+0x1a0/0x1a0
The recursion occurs when subscr_terminate tries to grab the
subscriber lock, which is already taken by subscr_conn_msg_event.
We fix this by checking if the request to establish a new
subscription was successful, and if not we initiate termination of
the subscriber after we have released the subscriber lock.
Signed-off-by: Erik Hugne <erik.hugne@ericsson.com>
Reviewed-by: Jon Maloy <jon.maloy@ericsson.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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The VXLAN neigh_reduce() code is completely non-functional since
check-in. Specific errors:
1) The original code drops all packets with a multicast destination address,
even though neighbor solicitations are sent to the solicited-node
address, a multicast address. The code after this check was never run.
2) The neighbor table lookup used the IPv6 header destination, which is the
solicited node address, rather than the target address from the
neighbor solicitation. So neighbor lookups would always fail if it
got this far. Also for L3MISSes.
3) The code calls ndisc_send_na(), which does a send on the tunnel device.
The context for neigh_reduce() is the transmit path, vxlan_xmit(),
where the host or a bridge-attached neighbor is trying to transmit
a neighbor solicitation. To respond to it, the tunnel endpoint needs
to do a *receive* of the appropriate neighbor advertisement. Doing a
send, would only try to send the advertisement, encapsulated, to the
remote destinations in the fdb -- hosts that definitely did not do the
corresponding solicitation.
4) The code uses the tunnel endpoint IPv6 forwarding flag to determine the
isrouter flag in the advertisement. This has nothing to do with whether
or not the target is a router, and generally won't be set since the
tunnel endpoint is bridging, not routing, traffic.
The patch below creates a proxy neighbor advertisement to respond to
neighbor solicitions as intended, providing proper IPv6 support for neighbor
reduction.
Signed-off-by: David L Stevens <dlstevens@us.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Christian Riesch says:
====================
net: davinci_emac: Fix interrupt requests and error handling
since commit 6892b41d9701283085b655c6086fb57a5d63fa47 (Linux 3.11) the
davinci_emac driver is broken. After doing ifconfig down, ifconfig up,
requesting the interrupts for the driver fails. The interface remains dead
until the board is rebooted.
The first patch in this patchset reverts commit
6892b41d9701283085b655c6086fb57a5d63fa47 partially and makes the driver
useable again.
During the work on the first patch, a number of bugs in the error handling
of the driver's ndo_open code were found. The second patch fixes these bugs.
I believe the first patch meets the rules for stable kernels, I therefore added
the stable tag to this patch. The second patch is just cleanup, the code
that is fixed by this patch is only executed in case of an error.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
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If an error occurs during the initialization in emac_dev_open() (the
driver's ndo_open function), interrupts, DMA descriptors etc. must be freed.
The current rollback code is buggy in several ways.
1) Freeing the interrupts. The current code will not free all interrupts
that were requested by the driver. Furthermore, the code tries to do a
platform_get_resource(priv->pdev, IORESOURCE_IRQ, -1) in its last
iteration.
This patch fixes these bugs.
2) Wrong order of err: and rollback: labels. If the setup of the PHY in
the code fails, the interrupts that have been requested before are
not freed:
request irq
if requesting irqs fails, goto rollback
setup phy
if phy setup fails, goto err
return 0
rollback:
free irqs
err:
This patch brings the code into the correct order.
3) The code calls napi_enable() and emac_int_enable(), but does not
undo both in case of an error.
This patch adds calls of emac_int_disable() and napi_disable() to the
rollback code.
4) RX DMA descriptors are not freed in case of an error: Right before
requesting the irqs, the function creates DMA descriptors for the
RX channel. These RX descriptors are never freed when we jump to either
rollback or err.
This patch adds code for freeing the DMA descriptors in the case of
an initialization error. This required a modification of
cpdma_ctrl_stop() in davinci_cpdma.c: We must be able to call this
function to free the DMA descriptors while the DMA channels are
in IDLE state (before cpdma_ctlr_start() was called).
Tested on a custom board with the Texas Instruments AM1808.
Signed-off-by: Christian Riesch <christian.riesch@omicron.at>
Signed-off-by: David S. Miller <davem@davemloft.net>
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In commit 6892b41d9701283085b655c6086fb57a5d63fa47
Author: Lad, Prabhakar <prabhakar.csengg@gmail.com>
Date: Tue Jun 25 21:24:51 2013 +0530
net: davinci: emac: Convert to devm_* api
the call of request_irq is replaced by devm_request_irq and the call
of free_irq is removed. But since interrupts are requested in
emac_dev_open, doing ifconfig up/down on the board requests the
interrupts again each time, causing devm_request_irq to fail. The
interface is dead until the device is rebooted.
This patch reverts said commit partially: It changes the driver back
to use request_irq instead of devm_request_irq, puts free_irq back in
place, but keeps the remaining changes of the original patch.
Reported-by: Jon Ringle <jon@ringle.org>
Signed-off-by: Christian Riesch <christian.riesch@omicron.at>
Cc: Lad, Prabhakar <prabhakar.csengg@gmail.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Signed-off-by: Matthew Wilcox <matthew.r.wilcox@intel.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
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It's only called within inode.c, so make it static, remove its prototype
from ext4.h and move it above all of its callers so it doesn't need a
prototype within inode.c.
Signed-off-by: Matthew Wilcox <matthew.r.wilcox@intel.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
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Neighbor Solicitation is ipv6 protocol, so we should check
skb->protocol with ETH_P_IPV6
Signed-off-by: Li RongQing <roy.qing.li@gmail.com>
Cc: WANG Cong <amwang@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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In arch_cpu_idle() we must enable %pil based interrupts before
potentially invoking the hypervisor cpu yield call.
As per the Hypervisor API documentation for cpu_yield:
Interrupts which are blocked by some mechanism other that
pstate.ie (for example %pil) are not guaranteed to cause
a return from this service.
It seems that only first generation Niagara chips are hit by this
bug. My best guess is that later chips implement this in hardware
and wake up anyways from %pil events, whereas in first generation
chips the yield is implemented completely in hypervisor code and
requires %pil to be enabled in order to wake properly from this
call.
Fixes: 87fa05aeb3a5 ("sparc: Use generic idle loop")
Reported-by: Fabio M. Di Nitto <fabbione@fabbione.net>
Reported-by: Jan Engelhardt <jengelh@inai.de>
Tested-by: Jan Engelhardt <jengelh@inai.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Use cmpxchg() to atomically set i_flags instead of clearing out the
S_IMMUTABLE, S_APPEND, etc. flags and then setting them from the
EXT4_IMMUTABLE_FL, EXT4_APPEND_FL flags, since this opens up a race
where an immutable file has the immutable flag cleared for a brief
window of time.
Reported-by: John Sullivan <jsrhbz@kanargh.force9.co.uk>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Cc: stable@kernel.org
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Set a in-memory superblock flag to indicate whether the file system is
designed to support the Hurd.
Also, add a sanity check to make sure the 64-bit feature is not set
for Hurd file systems, since i_file_acl_high conflicts with a
Hurd-specific field.
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
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There was a potential lock ordering problem with the module kASLR patch
("x86, kaslr: randomize module base load address"). This patch removes
the usage of the module_mutex and creates a new mutex to protect the
module base address offset value.
Chain exists of:
text_mutex --> kprobe_insn_slots.mutex --> module_mutex
[ 0.515561] Possible unsafe locking scenario:
[ 0.515561]
[ 0.515561] CPU0 CPU1
[ 0.515561] ---- ----
[ 0.515561] lock(module_mutex);
[ 0.515561] lock(kprobe_insn_slots.mutex);
[ 0.515561] lock(module_mutex);
[ 0.515561] lock(text_mutex);
[ 0.515561]
[ 0.515561] *** DEADLOCK ***
Reported-by: Fengguang Wu <fengguang.wu@intel.com>
Signed-off-by: Andy Honig <ahonig@google.com>
Signed-off-by: Kees Cook <keescook@chromium.org>
Reviewed-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
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Signed-off-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
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When processing an MPA Start Request, if the listening endpoint is
DEAD, then abort the connection.
If the IWCM returns an error, then we must abort the connection and
release resources. Also abort_connection() should not post a CLOSE
event, so clean that up too.
Signed-off-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
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These are generated by HW in some error cases and need to be
silently discarded.
Signed-off-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
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If cxgb4_ofld_send() returns < 0, then send_fw_pass_open_req() must
free the request skb and the saved skb with the tcp header.
Signed-off-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
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Signed-off-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
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