- 01 Dec, 2014 31 commits
-
-
Chris Wilson authored
commit f96de58f upstream. Signed-off-by:
Chris Wilson <chris@chris-wilson.co.uk> Reviewed-by:
Jani Nikula <jani.nikula@intel.com> Signed-off-by:
Daniel Vetter <daniel.vetter@ffwll.ch> Signed-off-by:
Luis Henriques <luis.henriques@canonical.com>
-
Daniel Vetter authored
commit 2208d655 upstream. This reverts the regressing commit 6547fbdb Author: Daniel Vetter <daniel.vetter@ffwll.ch> Date: Fri Dec 14 23:38:29 2012 +0100 drm/i915: Implement WaSetupGtModeTdRowDispatch that causes GPU hangs immediately on boot. Reported-by:
Leo Wolf <jclw@ymail.com> Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=79996Signed-off-by:
Daniel Vetter <daniel.vetter@intel.com> [Jani: amended the commit message slightly.] Signed-off-by:
-
Dave Hansen authored
commit 2cd3949f upstream. We have some very similarly named command-line options: arch/x86/kernel/cpu/common.c:__setup("noxsave", x86_xsave_setup); arch/x86/kernel/cpu/common.c:__setup("noxsaveopt", x86_xsaveopt_setup); arch/x86/kernel/cpu/common.c:__setup("noxsaves", x86_xsaves_setup); __setup() is designed to match options that take arguments, like "foo=bar" where you would have: __setup("foo", x86_foo_func...); The problem is that "noxsave" actually _matches_ "noxsaves" in the same way that "foo" matches "foo=bar". If you boot an old kernel that does not know about "noxsaves" with "noxsaves" on the command line, it will interpret the argument as "noxsave", which is not what you want at all. This makes the "noxsave" handler only return success when it finds an *exact* match. [ tglx: We really need to make __setup() more robust. ] Signed-off-by:
Dave Hansen <dave.hansen@linux.intel.com> Cc: Dave Hansen <dave@sr71.net> Cc: Fenghua Yu <fenghua.yu@intel.com> Cc: x86@kernel.org Link: http://lkml.kernel.org/r/20141111220133.FE053984@viggo.jf.intel.comSigned-off-by:
Thomas Gleixner <tglx@linutronix.de> Signed-off-by:
-
Maxime COQUELIN authored
commit 00b4d9a1 upstream. On some 32 bits architectures, including x86, GENMASK(31, 0) returns 0 instead of the expected ~0UL. This is the same on some 64 bits architectures with GENMASK_ULL(63, 0). This is due to an overflow in the shift operand, 1 << 32 for GENMASK, 1 << 64 for GENMASK_ULL. Reported-by:
Eric Paire <eric.paire@st.com> Suggested-by:
Rasmus Villemoes <linux@rasmusvillemoes.dk> Signed-off-by:
Maxime Coquelin <maxime.coquelin@st.com> Signed-off-by:
Peter Zijlstra (Intel) <peterz@infradead.org> Cc: linux@rasmusvillemoes.dk Cc: gong.chen@linux.intel.com Cc: John Sullivan <jsrhbz@kanargh.force9.co.uk> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Cc: Theodore Ts'o <tytso@mit.edu> Fixes: 10ef6b0d ("bitops: Introduce a more generic BITMASK macro") Link: http://lkml.kernel.org/r/1415267659-10563-1-git-send-email-maxime.coquelin@st.comSigned-off-by:
Ingo Molnar <mingo@kernel.org> Signed-off-by:
-
Jurgen Kramer authored
commit 6e84a8d7 upstream. This patch adds a USB control message delay quirk for a few specific Marantz/Denon devices. Without the delay the DACs will not work properly and produces the following type of messages: Nov 15 10:09:21 orwell kernel: [ 91.342880] usb 3-13: clock source 41 is not valid, cannot use Nov 15 10:09:21 orwell kernel: [ 91.343775] usb 3-13: clock source 41 is not valid, cannot use There are likely other Marantz/Denon devices using the same USB module which exhibit the same problems. But as this cannot be verified I limited the patch to the devices I could test. The following two devices are covered by this path: - Marantz SA-14S1 - Marantz HD-DAC1 Signed-off-by:
Jurgen Kramer <gtmkramer@xs4all.nl> Signed-off-by:
Takashi Iwai <tiwai@suse.de> Signed-off-by:
-
Fabio Estevam authored
commit c251ea7b upstream. On a mx28evk with a sgtl5000 codec we notice a loud 'click' sound to happen 5 seconds after the end of a playback. The SMALL_POP bit should fix this, but its definition is incorrect: according to the sgtl5000 manual it is bit 0 of CHIP_REF_CTRL register, not bit 1. Fix the definition accordingly and enable the bit as intended per the code comment. After applying this change, no loud 'click' sound is heard after playback Signed-off-by:
Fabio Estevam <fabio.estevam@freescale.com> Signed-off-by:
Mark Brown <broonie@kernel.org> Signed-off-by:
-
Thomas Petazzoni authored
commit 2cb1e025 upstream. In commit a1253ef6 ("ASoC: cs42l51: split i2c from codec driver"), the I2C part of the CS42L51 was moved to a separate file, but the definition of the of_device_id array was left in the driver file itself, no longer connected to the platform_driver structure using the .of_match_table pointer. This commit exports the of_device_id array in cs42l51, and uses it as .of_match_able in cs42l51-i2c.c. This solution was suggested by Brian Austin. Fixes: a1253ef6 ("ASoC: cs42l51: split i2c from codec driver") Signed-off-by:
Thomas Petazzoni <thomas.petazzoni@free-electrons.com> Acked-by:
Brian Austin <brian.austin@cirrus.com> Signed-off-by:
-
Miaoqing Pan authored
commit 4e6ce4dc upstream. Based on the reference clock, which could be 25MHz or 40MHz, AR_RTC_DERIVED_CLK is programmed differently for AR9340 and AR9550. But, when a chip reset is done, processing the initvals sets the register back to the default value. Fix this by moving the code in ath9k_hw_init_pll() to ar9003_hw_override_ini(). Also, do this override for AR9531. Signed-off-by:
Miaoqing Pan <miaoqing@qca.qualcomm.com> Signed-off-by:
Sujith Manoharan <c_manoha@qca.qualcomm.com> Signed-off-by:
John W. Linville <linville@tuxdriver.com> Signed-off-by:
-
Stanislaw Gruszka authored
commit cfd9167a upstream. RT2800 and newer hardware require padding between header and payload if header length is not multiple of 4. For historical reasons we also align payload to to 4 bytes boundary, but such alignment is not needed on modern H/W. Patch fixes skb_under_panic problems reported from time to time: https://bugzilla.kernel.org/show_bug.cgi?id=84911 https://bugzilla.kernel.org/show_bug.cgi?id=72471 http://marc.info/?l=linux-wireless&m=139108549530402&w=2 https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1087591 Panic happened because we eat 4 bytes of skb headroom on each (re)transmission when sending frame without the payload and the header length not being multiple of 4 (i.e. QoS header has 26 bytes). On such case because paylad_aling=2 is bigger than header_align=0 we increase header_align by 4 bytes. To prevent that we could change the check to: if (payload_length && payload_align > header_align) header_align += 4; but not aligning payload at all is more effective and alignment is not really needed by H/W (that has been tested on OpenWrt project for few years now). Reported-and-tested-by:
Antti S. Lankila <alankila@bel.fi> Debugged-by:
Henrik Asp <solenskiner@gmail.com> Originally-From: Helmut Schaa <helmut.schaa@googlemail.com> Signed-off-by:
Stanislaw Gruszka <sgruszka@redhat.com> Signed-off-by:
-
Ronald Wahl authored
commit 4f031fa9 upstream. Commit 7ec7c4a9 (mac80211: port CCMP to cryptoapi's CCM driver) introduced a regression when decrypting empty packets (data_len == 0). This will lead to backtraces like: (scatterwalk_start) from [<c01312f4>] (scatterwalk_map_and_copy+0x2c/0xa8) (scatterwalk_map_and_copy) from [<c013a5a0>] (crypto_ccm_decrypt+0x7c/0x25c) (crypto_ccm_decrypt) from [<c032886c>] (ieee80211_aes_ccm_decrypt+0x160/0x170) (ieee80211_aes_ccm_decrypt) from [<c031c628>] (ieee80211_crypto_ccmp_decrypt+0x1ac/0x238) (ieee80211_crypto_ccmp_decrypt) from [<c032ef28>] (ieee80211_rx_handlers+0x870/0x1d24) (ieee80211_rx_handlers) from [<c0330c7c>] (ieee80211_prepare_and_rx_handle+0x8a0/0x91c) (ieee80211_prepare_and_rx_handle) from [<c0331260>] (ieee80211_rx+0x568/0x730) (ieee80211_rx) from [<c01d3054>] (__carl9170_rx+0x94c/0xa20) (__carl9170_rx) from [<c01d3324>] (carl9170_rx_stream+0x1fc/0x320) (carl9170_rx_stream) from [<c01cbccc>] (carl9170_usb_tasklet+0x80/0xc8) (carl9170_usb_tasklet) from [<c00199dc>] (tasklet_hi_action+0x88/0xcc) (tasklet_hi_action) from [<c00193c8>] (__do_softirq+0xcc/0x200) (__do_softirq) from [<c0019734>] (irq_exit+0x80/0xe0) (irq_exit) from [<c0009c10>] (handle_IRQ+0x64/0x80) (handle_IRQ) from [<c000c3a0>] (__irq_svc+0x40/0x4c) (__irq_svc) from [<c0009d44>] (arch_cpu_idle+0x2c/0x34) Such packets can appear for example when using the carl9170 wireless driver because hardware sometimes generates garbage when the internal FIFO overruns. This patch adds an additional length check. Fixes: 7ec7c4a9 ("mac80211: port CCMP to cryptoapi's CCM driver") Acked-by:
Ard Biesheuvel <ard.biesheuvel@linaro.org> Signed-off-by:
Ronald Wahl <ronald.wahl@raritan.com> Signed-off-by:
Johannes Berg <johannes.berg@intel.com> Signed-off-by:
-
Andreas Färber authored
commit 62e6a3b6 upstream. This enables the snd_soc_snow module to be auto-loaded. Signed-off-by:
Andreas Färber <afaerber@suse.de> Signed-off-by:
-
Takashi Iwai authored
commit ea9d0d77 upstream. DPCM can update the FE/BE connection states totally asynchronously from the FE's PCM state. Most of FE/BE state changes are protected by mutex, so that they won't race, but there are still some actions that are uncovered. For example, suppose to switch a BE while a FE's stream is running. This would call soc_dpcm_runtime_update(), which sets FE's runtime_update flag, then sets up and starts BEs, and clears FE's runtime_update flag again. When a device emits XRUN during this operation, the PCM core triggers snd_pcm_stop(XRUN). Since the trigger action is an atomic ops, this isn't blocked by the mutex, thus it kicks off DPCM's trigger action. It eventually updates and clears FE's runtime_update flag while soc_dpcm_runtime_update() is running concurrently, and it results in confusion. Usually, for avoiding such a race, we take a lock. There is a PCM stream lock for that purpose. However, as already mentioned, the trigger action is atomic, and we can't take the lock for the whole soc_dpcm_runtime_update() or other operations that include the lengthy jobs like hw_params or prepare. This patch provides an alternative solution. This adds a way to defer the conflicting trigger callback to be executed at the end of FE/BE state changes. For doing it, two things are introduced: - Each runtime_update state change of FEs is protected via PCM stream lock. - The FE's trigger callback checks the runtime_update flag. If it's not set, the trigger action is executed there. If set, mark the pending trigger action and returns immediately. - At the exit of runtime_update state change, it checks whether the pending trigger is present. If yes, it executes the trigger action at this point. Reported-and-tested-by:
Qiao Zhou <zhouqiao@marvell.com> Signed-off-by:
Liam Girdwood <liam.r.girdwood@linux.intel.com> Signed-off-by:
-
Sagi Grimberg authored
commit 3b726ae2 upstream. In this case the cm_id->context is the isert_np, and the cm_id->qp is NULL, so use that to distinct the cases. Since we don't expect any other events on this cm_id we can just return -1 for explicit termination of the cm_id by the cma layer. Signed-off-by:
Sagi Grimberg <sagig@mellanox.com> Signed-off-by:
Nicholas Bellinger <nab@linux-iscsi.org> Signed-off-by:
-
Or Gerlitz authored
commit f57915cf upstream. This patch adds a max_send_sge=2 minimum in isert_conn_setup_qp() to ensure outgoing control PDU responses with tx_desc->num_sge=2 are able to function correctly. This addresses a bug with RDMA hardware using dev_attr.max_sge=3, that in the original code with the ConnectX-2 work-around would result in isert_conn->max_sge=1 being negotiated. Originally reported by Chris with ocrdma driver. Reported-by:
Chris Moore <Chris.Moore@emulex.com> Tested-by:
Or Gerlitz <ogerlitz@mellanox.com> Signed-off-by:
-
Kuninori Morimoto authored
commit 706c6621 upstream. R-Car sound doesn't support PAUSE. Remove SNDRV_PCM_INFO_PAUSE flags from snd_pcm_hardware info Signed-off-by:
Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> Signed-off-by:
-
Kuninori Morimoto authored
commit c1b9b9b1 upstream. FSI doesn't support PAUSE. Remove SNDRV_PCM_INFO_PAUSE flags from snd_pcm_hardware info Signed-off-by:
-
Bart Van Assche authored
commit ab477c1f upstream. It is not guaranteed to that srp_sq_size is supported by the HCA. So if we failed to create the QP with ENOMEM, try with a smaller srp_sq_size. Keep it up until we hit MIN_SRPT_SQ_SIZE, then fail the connection. Reported-by:
Mark Lehrer <lehrer@gmail.com> Signed-off-by:
Bart Van Assche <bvanassche@acm.org> Signed-off-by:
-
Nicholas Bellinger authored
commit ab8edab1 upstream. This patch addresses a bug where individual vhost-scsi configfs endpoint groups can be removed from below while active exports to QEMU userspace still exist, resulting in an OOPs. It adds a configfs_depend_item() in vhost_scsi_set_endpoint() to obtain an explicit dependency on se_tpg->tpg_group in order to prevent individual vhost-scsi WWPN endpoints from being released via normal configfs methods while an QEMU ioctl reference still exists. Also, add matching configfs_undepend_item() in vhost_scsi_clear_endpoint() to release the dependency, once QEMU's reference to the individual group at /sys/kernel/config/target/vhost/$WWPN/$TPGT is released. (Fix up vhost_scsi_clear_endpoint() error path - DanC) Cc: Michael S. Tsirkin <mst@redhat.com> Cc: Paolo Bonzini <pbonzini@redhat.com> Cc: Stefan Hajnoczi <stefanha@redhat.com> Signed-off-by:
-
Roland Dreier authored
commit 885e7b0e upstream. If an initiator sends a zero-length command (e.g. TEST UNIT READY) but sets the transfer direction in the transport layer to indicate a data-out phase, we still shouldn't try to transfer data. At best it's a NOP, and depending on the transport, we might crash on an uninitialized sg list. Reported-by:
Craig Watson <craig.watson@vanguard-rugged.com> Signed-off-by:
Roland Dreier <roland@purestorage.com> Signed-off-by:
-
Or Gerlitz authored
commit f4a1edd5 upstream. Currenly we only support Large-Send and TX checksum offloads for encapsulated traffic of type VXLAN. We must make sure to advertize these offloads up to the stack only when VXLAN tunnel is set. Failing to do so, would mislead the the networking stack to assume that the driver can offload the internal TX checksum for GRE packets and other buggy schemes. Reported-by:
Florian Westphal <fw@strlen.de> Signed-off-by:
David S. Miller <davem@davemloft.net> Signed-off-by:
-
Or Gerlitz authored
commit 9737c6ab upstream. This is currently missing, which results in a crash when one attempts to set VXLAN tunnel over the mlx4_en when acting as PF. [ 2408.785472] BUG: unable to handle kernel NULL pointer dereference at (null) [...] [ 2408.994104] Call Trace: [ 2408.996584] [<ffffffffa021f7f5>] ? vxlan_get_rx_port+0xd6/0x103 [vxlan] [ 2409.003316] [<ffffffffa021f71f>] ? vxlan_lowerdev_event+0xf2/0xf2 [vxlan] [ 2409.010225] [<ffffffffa0630358>] mlx4_en_start_port+0x862/0x96a [mlx4_en] [ 2409.017132] [<ffffffffa063070f>] mlx4_en_open+0x17f/0x1b8 [mlx4_en] While here, make sure to invoke vxlan_get_rx_port() only when VXLAN offloads are actually enabled and not when they are only supported. Reported-by:
Ido Shamay <idos@mellanox.com> Signed-off-by:
-
Jiri Bohac authored
commit 01462405 upstream. This fixes an old regression introduced by commit b0d0d915 (ipx: remove the BKL). When a recvmsg syscall blocks waiting for new data, no data can be sent on the same socket with sendmsg because ipx_recvmsg() sleeps with the socket locked. This breaks mars-nwe (NetWare emulator): - the ncpserv process reads the request using recvmsg - ncpserv forks and spawns nwconn - ncpserv calls a (blocking) recvmsg and waits for new requests - nwconn deadlocks in sendmsg on the same socket Commit b0d0d915 has simply replaced BKL locking with lock_sock/release_sock. Unlike now, BKL got unlocked while sleeping, so a blocking recvmsg did not block a concurrent sendmsg. Only keep the socket locked while actually working with the socket data and release it prior to calling skb_recv_datagram(). Signed-off-by:
Jiri Bohac <jbohac@suse.cz> Reviewed-by:
Arnd Bergmann <arnd@arndb.de> Signed-off-by:
-
Mathias Krause authored
commit a5f6fc28 upstream. pptp_getname() only partially initializes the stack variable sa, particularly only fills the pptp part of the sa_addr union. The code thereby discloses 16 bytes of kernel stack memory via getsockname(). Fix this by memset(0)'ing the union before. Cc: Dmitry Kozlov <xeb@mail.ru> Signed-off-by:
Mathias Krause <minipli@googlemail.com> Signed-off-by:
-
Nikolay Aleksandrov authored
commit b8e4500f upstream. Since commit 6fde8f03 ("bonding: fix locking in bond_loadbalance_arp_mon()") we can have a stale bond carrier state and stale curr_active_slave when using arp monitoring in loadbalance modes. The reason is that in bond_loadbalance_arp_mon() we can't have do_failover == true but slave_state_changed == false, whenever do_failover is true then slave_state_changed is also true. Then the following piece from bond_loadbalance_arp_mon(): if (slave_state_changed) { bond_slave_state_change(bond); if (BOND_MODE(bond) == BOND_MODE_XOR) bond_update_slave_arr(bond, NULL); } else if (do_failover) { block_netpoll_tx(); bond_select_active_slave(bond); unblock_netpoll_tx(); } will execute only the first branch, always and regardless of do_failover. Since these two events aren't related in such way, we need to decouple and consider them separately. For example this issue could lead to the following result: Bonding Mode: load balancing (round-robin) *MII Status: down* MII Polling Interval (ms): 0 Up Delay (ms): 0 Down Delay (ms): 0 ARP Polling Interval (ms): 100 ARP IP target/s (n.n.n.n form): 192.168.9.2 Slave Interface: ens12 *MII Status: up* Speed: 10000 Mbps Duplex: full Link Failure Count: 2 Permanent HW addr: 00:0f:53:01:42:2c Slave queue ID: 0 Slave Interface: eth1 *MII Status: up* Speed: Unknown Duplex: Unknown Link Failure Count: 70 Permanent HW addr: 52:54:00:2f:0f:8e Slave queue ID: 0 Since some interfaces are up, then the status of the bond should also be up, but it will never change unless something invokes bond_set_carrier() (i.e. enslave, bond_select_active_slave etc). Now, if I force the calling of bond_select_active_slave via for example changing primary_reselect (it can change in any mode), then the MII status goes to "up" because it calls bond_select_active_slave() which should've been done from bond_loadbalance_arp_mon() itself. CC: Veaceslav Falico <vfalico@gmail.com> CC: Jay Vosburgh <j.vosburgh@gmail.com> CC: Andy Gospodarek <andy@greyhouse.net> CC: Ding Tianhong <dingtianhong@huawei.com> Fixes: 6fde8f03 ("bonding: fix locking in bond_loadbalance_arp_mon()") Signed-off-by:
Nikolay Aleksandrov <nikolay@redhat.com> Acked-by:
Veaceslav Falico <vfalico@gmail.com> Acked-by:
Andy Gospodarek <gospo@cumulusnetworks.com> Acked-by:
Ding Tianhong <dingtianhong@huawei.com> Signed-off-by:
-
Martin Hauke authored
commit bb2bdeb8 upstream. Added the USB VID/PID for the HP lt4112 LTE/HSPA+ Gobi 4G Modem (Huawei me906e) Signed-off-by:
Martin Hauke <mardnh@gmx.de> Acked-by:
Bjørn Mork <bjorn@mork.no> Signed-off-by:
-
Alexey Khoroshilov authored
commit 8c2dd544 upstream. In case of any failure ieee802154fake_probe() just calls unregister_netdev(). But it does not look safe to unregister netdevice before it was registered. The patch implements straightforward resource deallocation in case of failure in ieee802154fake_probe(). Found by Linux Driver Verification project (linuxtesting.org). Signed-off-by:
Alexey Khoroshilov <khoroshilov@ispras.ru> Signed-off-by:
-
Panu Matilainen authored
commit 49dd18ba upstream. Trying to add an unreachable route incorrectly returns -ESRCH if if custom FIB rules are present: [root@localhost ~]# ip route add 74.125.31.199 dev eth0 via 1.2.3.4 RTNETLINK answers: Network is unreachable [root@localhost ~]# ip rule add to 55.66.77.88 table 200 [root@localhost ~]# ip route add 74.125.31.199 dev eth0 via 1.2.3.4 RTNETLINK answers: No such process [root@localhost ~]# Commit 83886b6b ("[NET]: Change "not found" return value for rule lookup") changed fib_rules_lookup() to use -ESRCH as a "not found" code internally, but for user space it should be translated into -ENETUNREACH. Handle the translation centrally in ipv4-specific fib_lookup(), leaving the DECnet case alone. On a related note, commit b7a71b51 ("ipv4: removed redundant conditional") removed a similar translation from ip_route_input_slow() prematurely AIUI. Fixes: b7a71b51 ("ipv4: removed redundant conditional") Signed-off-by:
Panu Matilainen <pmatilai@redhat.com> Signed-off-by:
-
Vincent BENAYOUN authored
commit 84bc8868 upstream. There could be a signed overflow in the following code. The expression, (32-logmask) is comprised between 0 and 31 included. It may be equal to 31. In such a case the left shift will produce a signed integer overflow. According to the C99 Standard, this is an undefined behavior. A simple fix is to replace the signed int 1 with the unsigned int 1U. Signed-off-by:
Vincent BENAYOUN <vincent.benayoun@trust-in-soft.com> Signed-off-by:
-
David S. Miller authored
commit 5a2b59d3 upstream. We are reading the memory location, so we have to have a memory constraint in there purely for the sake of showing the data flow to the compiler. Reported-by:
Martin K. Petersen <martin.petersen@oracle.com> Signed-off-by:
-
Paolo Bonzini authored
commit c1118b36 upstream. On x86_64, kernel text mappings are mapped read-only with CONFIG_DEBUG_RODATA. In that case, KVM will fail to patch VMCALL instructions to VMMCALL as required on AMD processors. The failure mode is currently a divide-by-zero exception, which obviously is a KVM bug that has to be fixed. However, picking the right instruction between VMCALL and VMMCALL will be faster and will help if you cannot upgrade the hypervisor. Reported-by:
Chris Webb <chris@arachsys.com> Tested-by:
Borislav Petkov <bp@suse.de> Signed-off-by:
Paolo Bonzini <pbonzini@redhat.com> Cc: Chris J Arges <chris.j.arges@canonical.com> [ luis: used Chris backport to 3.16 ] Signed-off-by:
-
Luis Henriques authored
Signed-off-by:
-
- 27 Nov, 2014 9 commits
-
-
Pali Rohár authored
commit a666b6ff upstream. Without this patch, dell-wmi is trying to access elements of dynamically allocated array without checking the array size. This can lead to memory corruption or a kernel panic. This patch adds the missing checks for array size. Signed-off-by:
Pali Rohár <pali.rohar@gmail.com> Signed-off-by:
Darren Hart <dvhart@linux.intel.com> Signed-off-by:
-
Andrey Vagin authored
commit 1195d94e upstream. proc_dointvec_minmax() returns zero if a new value has been set. So we don't need to check all charecters have been handled. Below you can find two examples. In the new value has not been handled properly. $ strace ./a.out open("/proc/sys/kernel/auto_msgmni", O_WRONLY) = 3 write(3, "0\n\0", 3) = 2 close(3) = 0 exit_group(0) $ cat /sys/kernel/debug/tracing/trace $strace ./a.out open("/proc/sys/kernel/auto_msgmni", O_WRONLY) = 3 write(3, "0\n", 2) = 2 close(3) = 0 $ cat /sys/kernel/debug/tracing/trace a.out-697 [000] .... 3280.998235: unregister_ipcns_notifier <-proc_ipcauto_dointvec_minmax Fixes: 9eefe520 ("ipc: do not use a negative value to re-enable msgmni automatic recomputin") Signed-off-by:
Andrey Vagin <avagin@openvz.org> Cc: Mathias Krause <minipli@googlemail.com> Cc: Manfred Spraul <manfred@colorfullife.com> Cc: Joe Perches <joe@perches.com> Cc: Davidlohr Bueso <davidlohr@hp.com> Signed-off-by:
Andrew Morton <akpm@linux-foundation.org> Signed-off-by:
Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by:
-
Roger Quadros authored
commit a8ead0ec upstream. The 5th NAND partition should be named "NAND.u-boot-spl-os" instead of "NAND.u-boot-spl". This is to be consistent with other TI boards as well as u-boot. Fixes: 91994fac ("ARM: dts: am335x-evm: NAND: update MTD partition table") Signed-off-by:
Roger Quadros <rogerq@ti.com> Signed-off-by:
Sekhar Nori <nsekhar@ti.com> Signed-off-by:
Tony Lindgren <tony@atomide.com> Signed-off-by:
-
Andy Lutomirski authored
commit 81f49a8f upstream. is_compat_task() is the wrong check for audit arch; the check should be is_ia32_task(): x32 syscalls should be AUDIT_ARCH_X86_64, not AUDIT_ARCH_I386. CONFIG_AUDITSYSCALL is currently incompatible with x32, so this has no visible effect. Signed-off-by:
Andy Lutomirski <luto@amacapital.net> Link: http://lkml.kernel.org/r/a0138ed8c709882aec06e4acc30bfa9b623b8717.1409954077.git.luto@amacapital.netSigned-off-by:
H. Peter Anvin <hpa@linux.intel.com> Signed-off-by:
-
Pranith Kumar authored
commit 2aa792e6 upstream. The rcu_gp_kthread_wake() function checks for three conditions before waking up grace period kthreads: * Is the thread we are trying to wake up the current thread? * Are the gp_flags zero? (all threads wait on non-zero gp_flags condition) * Is there no thread created for this flavour, hence nothing to wake up? If any one of these condition is true, we do not call wake_up(). It was found that there are quite a few avoidable wake ups both during idle time and under stress induced by rcutorture. Idle: Total:66000, unnecessary:66000, case1:61827, case2:66000, case3:0 Total:68000, unnecessary:68000, case1:63696, case2:68000, case3:0 rcutorture: Total:254000, unnecessary:254000, case1:199913, case2:254000, case3:0 Total:256000, unnecessary:256000, case1:201784, case2:256000, case3:0 Here case{1-3} are the cases listed above. We can avoid these wake ups by using rcu_gp_kthread_wake() to conditionally wake up the grace period kthreads. There is a comment about an implied barrier supplied by the wake_up() logic. This barrier is necessary for the awakened thread to see the updated ->gp_flags. This flag is always being updated with the root node lock held. Also, the awakened thread tries to acquire the root node lock before reading ->gp_flags because of which there is proper ordering. Hence this commit tries to avoid calling wake_up() whenever we can by using rcu_gp_kthread_wake() function. Signed-off-by:
Pranith Kumar <bobby.prani@gmail.com> CC: Mathieu Desnoyers <mathieu.desnoyers@efficios.com> Signed-off-by:
Paul E. McKenney <paulmck@linux.vnet.ibm.com> Signed-off-by:
-
Pablo Neira authored
commit e10038a8 upstream. This structure is not exposed to userspace, so fix this by defining struct sk_filter; so we skip the casting in kernelspace. This is safe since userspace has no way to lurk with that internal pointer. Fixes: e6f30c73 ("netfilter: x_tables: add xt_bpf match") Signed-off-by:
Pablo Neira Ayuso <pablo@netfilter.org> Acked-by:
Willem de Bruijn <willemb@google.com> Signed-off-by:
-
Devesh Sharma authored
commit 8b0f93d9 upstream. During create-ah from userspace, uverbs is sending garbage data in attr.dmac and attr.vlan_id. This patch sets attr.dmac and attr.vlan_id to zero. Fixes: dd5f03be ("IB/core: Ethernet L2 attributes in verbs/cm structures") Signed-off-by:
Devesh Sharma <devesh.sharma@emulex.com> Signed-off-by:
-
Bjorn Helgaas authored
commit 96a2adbc upstream. kernel/time/jiffies.c provides a default clocksource_default_clock() definition explicitly marked "weak". arch/s390 provides its own definition intended to override the default, but the "weak" attribute on the declaration applied to the s390 definition as well, so the linker chose one based on link order (see 10629d71 ("PCI: Remove __weak annotation from pcibios_get_phb_of_node decl")). Remove the "weak" attribute from the clocksource_default_clock() declaration so we always prefer a non-weak definition over the weak one, independent of link order. Fixes: f1b82746 ("clocksource: Cleanup clocksource selection") Signed-off-by:
Bjorn Helgaas <bhelgaas@google.com> Acked-by:
John Stultz <john.stultz@linaro.org> Acked-by:
-
Bjorn Helgaas authored
commit 107bcc6d upstream. kernel/debug/debug_core.c provides a default kgdb_arch_pc() definition explicitly marked "weak". Several architectures provide their own definitions intended to override the default, but the "weak" attribute on the declaration applied to the arch definitions as well, so the linker chose one based on link order (see 10629d71 ("PCI: Remove __weak annotation from pcibios_get_phb_of_node decl")). Remove the "weak" attribute from the declaration so we always prefer a non-weak definition over the weak one, independent of link order. Fixes: 688b744d ("kgdb: fix signedness mixmatches, add statics, add declaration to header") Tested-by: Vineet Gupta <vgupta@synopsys.com> # for ARC build Signed-off-by:
Harvey Harrison <harvey.harrison@gmail.com> Signed-off-by:
-
