- 11 Jul, 2016 40 commits
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Huacai Chen authored
[ Upstream commit a95d0692 ] After commit 92923ca3 ("mm: meminit: only set page reserved in the memblock region"), the MIPS hibernation is broken. Because pages in nosave data section should be "reserved", but currently they aren't set to "reserved" at initialization. This patch makes hibernation work again. Signed-off-by:
Huacai Chen <chenhc@lemote.com> Cc: Aurelien Jarno <aurelien@aurel32.net> Cc: Steven J . Hill <sjhill@realitydiluted.com> Cc: Fuxin Zhang <zhangfx@lemote.com> Cc: Zhangjin Wu <wuzhangjin@gmail.com> Cc: linux-mips@linux-mips.org Cc: stable@vger.kernel.org Patchwork: https://patchwork.linux-mips.org/patch/12888/Signed-off-by:
Ralf Baechle <ralf@linux-mips.org> Signed-off-by:
Sasha Levin <sasha.levin@oracle.com>
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Chanwoo Choi authored
[ Upstream commit b8995f52 ] This patch fixes the broken serial log when changing the clock source of uart device. Before disabling the original clock source, this patch enables the new clock source to protect the clock off state for a split second. Signed-off-by:
Chanwoo Choi <cw00.choi@samsung.com> Reviewed-by:
Marek Szyprowski <m.szyprowski@samsung.com> Signed-off-by:
Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by:
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Jiri Slaby authored
[ Upstream commit 6798df4c ] When csw->con_startup() fails in do_register_con_driver, we return no error (i.e. 0). This was changed back in 2006 by commit 3e795de7. Before that we used to return -ENODEV. So fix the return value to be -ENODEV in that case again. Fixes: 3e795de7 ("VT binding: Add binding/unbinding support for the VT console") Signed-off-by:
Jiri Slaby <jslaby@suse.cz> Reported-by:
"Dan Carpenter" <dan.carpenter@oracle.com> Signed-off-by:
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Paolo Bonzini authored
[ Upstream commit 316314ca ] This ensures that the guest doesn't see XSAVE extensions (e.g. xgetbv1 or xsavec) that the host lacks. Cc: stable@vger.kernel.org Reviewed-by:
Radim Krčmář <rkrcmar@redhat.com> Signed-off-by:
Paolo Bonzini <pbonzini@redhat.com> Signed-off-by:
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Lars-Peter Clausen authored
[ Upstream commit 332a5b44 ] In the current implementation functionfs generates a EFAULT for async read operations if the read buffer size is larger than the URB data size. Since a application does not necessarily know how much data the host side is going to send it typically supplies a buffer larger than the actual data, which will then result in a EFAULT error. This behaviour was introduced while refactoring the code to use iov_iter interface in commit c993c39b ("gadget/function/f_fs.c: use put iov_iter into io_data"). The original code took the minimum over the URB size and the user buffer size and then attempted to copy that many bytes using copy_to_user(). If copy_to_user() could not copy all data a EFAULT error was generated. Restore the original behaviour by only generating a EFAULT error when the number of bytes copied is not the size of the URB and the target buffer has not been fully filled. Commit 342f39a6 ("usb: gadget: f_fs: fix check in read operation") already fixed the same problem for the synchronous read path. Fixes: c993c39b ("gadget/function/f_fs.c: use put iov_iter into io_data") Acked-by:
Michal Nazarewicz <mina86@mina86.com> Signed-off-by:
Lars-Peter Clausen <lars@metafoo.de> Signed-off-by:
Felipe Balbi <felipe.balbi@linux.intel.com> Signed-off-by:
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Andy Gross authored
[ Upstream commit 2a0974aa ] This patch adds the CLK_SET_RATE_PARENT flag for the crypto core and ahb blocks. Without this flag, clk_set_rate can fail for certain frequency requests. Signed-off-by:
Andy Gross <andy.gross@linaro.org> Fixes: 3966fab8 ("clk: qcom: Add MSM8916 Global Clock Controller support") Signed-off-by:
Stephen Boyd <sboyd@codeaurora.org> Signed-off-by:
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Josef Bacik authored
[ Upstream commit c79b4713 ] The fd we pass in may not be on a btrfs file system, so don't try to do BTRFS_I() on it. Thanks, Signed-off-by:
Josef Bacik <jbacik@fb.com> Reviewed-by:
David Sterba <dsterba@suse.com> Signed-off-by:
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Lucas Stach authored
[ Upstream commit e3c00d87 ] On DCE6.1 PPLL2 is exclusively available to UNIPHYA, so it should not be taken into consideration when looking for an already enabled PLL to be shared with other outputs. This fixes the broken VGA port (TRAVIS DP->VGA bridge) on my Richland based laptop, where the internal display is connected to UNIPHYA through a TRAVIS DP->LVDS bridge. Bug: https://bugs.freedesktop.org/show_bug.cgi?id=78987 v2: agd: add check in radeon_get_shared_nondp_ppll as well, drop extra parameter. Signed-off-by:
Lucas Stach <dev@lynxeye.de> Signed-off-by:
Alex Deucher <alexander.deucher@amd.com> Cc: stable@vger.kernel.org Signed-off-by:
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Gerald Schaefer authored
[ Upstream commit 723cacbd ] There is a race with multi-threaded applications between context switch and pagetable upgrade. In switch_mm() a new user_asce is built from mm->pgd and mm->context.asce_bits, w/o holding any locks. A concurrent mmap with a pagetable upgrade on another thread in crst_table_upgrade() could already have set new asce_bits, but not yet the new mm->pgd. This would result in a corrupt user_asce in switch_mm(), and eventually in a kernel panic from a translation exception. Fix this by storing the complete asce instead of just the asce_bits, which can then be read atomically from switch_mm(), so that it either sees the old value or the new value, but no mixture. Both cases are OK. Having the old value would result in a page fault on access to the higher level memory, but the fault handler would see the new mm->pgd, if it was a valid access after the mmap on the other thread has completed. So as worst-case scenario we would have a page fault loop for the racing thread until the next time slice. Also remove dead code and simplify the upgrade/downgrade path, there are no upgrades from 2 levels, and only downgrades from 3 levels for compat tasks. There are also no concurrent upgrades, because the mmap_sem is held with down_write() in do_mmap, so the flush and table checks during upgrade can be removed. Reported-by:
Michael Munday <munday@ca.ibm.com> Reviewed-by:
Martin Schwidefsky <schwidefsky@de.ibm.com> Signed-off-by:
Gerald Schaefer <gerald.schaefer@de.ibm.com> Signed-off-by:
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Eric Dumazet authored
[ Upstream commit 10a81980 ] In the very unlikely case __tcp_retransmit_skb() can not use the cloning done in tcp_transmit_skb(), we need to refresh skb_mstamp before doing the copy and transmit, otherwise TCP TS val will be an exact copy of original transmit. Fixes: 7faee5c0 ("tcp: remove TCP_SKB_CB(skb)->when") Signed-off-by:
Eric Dumazet <edumazet@google.com> Cc: Yuchung Cheng <ycheng@google.com> Acked-by:
Yuchung Cheng <ycheng@google.com> Signed-off-by:
David S. Miller <davem@davemloft.net> Signed-off-by:
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Kangjie Lu authored
[ Upstream commit 79e48650 ] Stack object "dte_facilities" is allocated in x25_rx_call_request(), which is supposed to be initialized in x25_negotiate_facilities. However, 5 fields (8 bytes in total) are not initialized. This object is then copied to userland via copy_to_user, thus infoleak occurs. Signed-off-by:
Kangjie Lu <kjlu@gatech.edu> Signed-off-by:
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Nikolay Aleksandrov authored
[ Upstream commit 31ca0458 ] get_bridge_ifindices() is used from the old "deviceless" bridge ioctl calls which aren't called with rtnl held. The comment above says that it is called with rtnl but that is not really the case. Here's a sample output from a test ASSERT_RTNL() which I put in get_bridge_ifindices and executed "brctl show": [ 957.422726] RTNL: assertion failed at net/bridge//br_ioctl.c (30) [ 957.422925] CPU: 0 PID: 1862 Comm: brctl Tainted: G W O 4.6.0-rc4+ #157 [ 957.423009] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.8.1-20150318_183358- 04/01/2014 [ 957.423009] 0000000000000000 ffff880058adfdf0 ffffffff8138dec5 0000000000000400 [ 957.423009] ffffffff81ce8380 ffff880058adfe58 ffffffffa05ead32 0000000000000001 [ 957.423009] 00007ffec1a444b0 0000000000000400 ffff880053c19130 0000000000008940 [ 957.423009] Call Trace: [ 957.423009] [<ffffffff8138dec5>] dump_stack+0x85/0xc0 [ 957.423009] [<ffffffffa05ead32>] br_ioctl_deviceless_stub+0x212/0x2e0 [bridge] [ 957.423009] [<ffffffff81515beb>] sock_ioctl+0x22b/0x290 [ 957.423009] [<ffffffff8126ba75>] do_vfs_ioctl+0x95/0x700 [ 957.423009] [<ffffffff8126c159>] SyS_ioctl+0x79/0x90 [ 957.423009] [<ffffffff8163a4c0>] entry_SYSCALL_64_fastpath+0x23/0xc1 Since it only reads bridge ifindices, we can use rcu to safely walk the net device list. Also remove the wrong rtnl comment above. Signed-off-by:
Nikolay Aleksandrov <nikolay@cumulusnetworks.com> Signed-off-by:
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Ian Campbell authored
[ Upstream commit dedc58e0 ] The peer may be expecting a reply having sent a request and then done a shutdown(SHUT_WR), so tearing down the whole socket at this point seems wrong and breaks for me with a client which does a SHUT_WR. Looking at other socket family's stream_recvmsg callbacks doing a shutdown here does not seem to be the norm and removing it does not seem to have had any adverse effects that I can see. I'm using Stefan's RFC virtio transport patches, I'm unsure of the impact on the vmci transport. Signed-off-by:
Ian Campbell <ian.campbell@docker.com> Cc: "David S. Miller" <davem@davemloft.net> Cc: Stefan Hajnoczi <stefanha@redhat.com> Cc: Claudio Imbrenda <imbrenda@linux.vnet.ibm.com> Cc: Andy King <acking@vmware.com> Cc: Dmitry Torokhov <dtor@vmware.com> Cc: Jorgen Hansen <jhansen@vmware.com> Cc: Adit Ranadive <aditr@vmware.com> Cc: netdev@vger.kernel.org Signed-off-by:
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Daniel Jurgens authored
[ Upstream commit 82d69203 ] Use htons instead of unconditionally byte swapping nexthdr. On a little endian systems shifting the byte is correct behavior, but it results in incorrect csums on big endian architectures. Fixes: f8c6455b ('net/mlx4_en: Extend checksum offloading by CHECKSUM COMPLETE') Signed-off-by:
Daniel Jurgens <danielj@mellanox.com> Reviewed-by:
Carol Soto <clsoto@us.ibm.com> Tested-by:
Tariq Toukan <tariqt@mellanox.com> Signed-off-by:
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Kangjie Lu authored
[ Upstream commit 5f8e4474 ] The stack object “map” has a total size of 32 bytes. Its last 4 bytes are padding generated by compiler. These padding bytes are not initialized and sent out via “nla_put”. Signed-off-by:
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Kangjie Lu authored
[ Upstream commit b8670c09 ] The stack object “info” has a total size of 12 bytes. Its last byte is padding which is not initialized and leaked via “put_cmsg”. Signed-off-by:
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Uwe Kleine-König authored
[ Upstream commit 1c021bb7 ] In the receive path a queue's work bit was cleared unconditionally even if fec_enet_rx_queue only read out a part of the available packets from the hardware. This resulted in not reading any packets in the next napi turn and so packets were delayed or lost. The obvious fix is to only clear a queue's bit when the queue was emptied. Fixes: 4d494cdc ("net: fec: change data structure to support multiqueue") Signed-off-by:
Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Reviewed-by:
Lucas Stach <l.stach@pengutronix.de> Tested-by:
Fugang Duan <fugang.duan@nxp.com> Acked-by:
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Neil Horman authored
[ Upstream commit 6071bd1a ] This was recently reported to me, and reproduced on the latest net kernel, when attempting to run netperf from a host that had a netem qdisc attached to the egress interface: [ 788.073771] ---------------------[ cut here ]--------------------------- [ 788.096716] WARNING: at net/core/dev.c:2253 skb_warn_bad_offload+0xcd/0xda() [ 788.129521] bnx2: caps=(0x00000001801949b3, 0x0000000000000000) len=2962 data_len=0 gso_size=1448 gso_type=1 ip_summed=3 [ 788.182150] Modules linked in: sch_netem kvm_amd kvm crc32_pclmul ipmi_ssif ghash_clmulni_intel sp5100_tco amd64_edac_mod aesni_intel lrw gf128mul glue_helper ablk_helper edac_mce_amd cryptd pcspkr sg edac_core hpilo ipmi_si i2c_piix4 k10temp fam15h_power hpwdt ipmi_msghandler shpchp acpi_power_meter pcc_cpufreq nfsd auth_rpcgss nfs_acl lockd grace sunrpc ip_tables xfs libcrc32c sd_mod crc_t10dif crct10dif_generic mgag200 syscopyarea sysfillrect sysimgblt i2c_algo_bit drm_kms_helper ahci ata_generic pata_acpi ttm libahci crct10dif_pclmul pata_atiixp tg3 libata crct10dif_common drm crc32c_intel ptp serio_raw bnx2 r8169 hpsa pps_core i2c_core mii dm_mirror dm_region_hash dm_log dm_mod [ 788.465294] CPU: 16 PID: 0 Comm: swapper/16 Tainted: G W ------------ 3.10.0-327.el7.x86_64 #1 [ 788.511521] Hardware name: HP ProLiant DL385p Gen8, BIOS A28 12/17/2012 [ 788.542260] ffff880437c036b8 f7afc56532a53db9 ffff880437c03670 ffffffff816351f1 [ 788.576332] ffff880437c036a8 ffffffff8107b200 ffff880633e74200 ffff880231674000 [ 788.611943] 0000000000000001 0000000000000003 0000000000000000 ffff880437c03710 [ 788.647241] Call Trace: [ 788.658817] <IRQ> [<ffffffff816351f1>] dump_stack+0x19/0x1b [ 788.686193] [<ffffffff8107b200>] warn_slowpath_common+0x70/0xb0 [ 788.713803] [<ffffffff8107b29c>] warn_slowpath_fmt+0x5c/0x80 [ 788.741314] [<ffffffff812f92f3>] ? ___ratelimit+0x93/0x100 [ 788.767018] [<ffffffff81637f49>] skb_warn_bad_offload+0xcd/0xda [ 788.796117] [<ffffffff8152950c>] skb_checksum_help+0x17c/0x190 [ 788.823392] [<ffffffffa01463a1>] netem_enqueue+0x741/0x7c0 [sch_netem] [ 788.854487] [<ffffffff8152cb58>] dev_queue_xmit+0x2a8/0x570 [ 788.880870] [<ffffffff8156ae1d>] ip_finish_output+0x53d/0x7d0 ... The problem occurs because netem is not prepared to handle GSO packets (as it uses skb_checksum_help in its enqueue path, which cannot manipulate these frames). The solution I think is to simply segment the skb in a simmilar fashion to the way we do in __dev_queue_xmit (via validate_xmit_skb), with some minor changes. When we decide to corrupt an skb, if the frame is GSO, we segment it, corrupt the first segment, and enqueue the remaining ones. tested successfully by myself on the latest net kernel, to which this applies Signed-off-by:
Neil Horman <nhorman@tuxdriver.com> CC: Jamal Hadi Salim <jhs@mojatatu.com> CC: "David S. Miller" <davem@davemloft.net> CC: netem@lists.linux-foundation.org CC: eric.dumazet@gmail.com CC: stephen@networkplumber.org Acked-by:
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WANG Cong authored
[ Upstream commit bdf17661 ] Similarly, we need to update backlog too when we update qlen. Cc: Jamal Hadi Salim <jhs@mojatatu.com> Signed-off-by:
Cong Wang <xiyou.wangcong@gmail.com> Signed-off-by:
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WANG Cong authored
[ Upstream commit 431e3a8e ] We saw qlen!=0 but backlog==0 on our production machine: qdisc htb 1: dev eth0 root refcnt 2 r2q 10 default 1 direct_packets_stat 0 ver 3.17 Sent 172680457356 bytes 222469449 pkt (dropped 0, overlimits 123575834 requeues 0) backlog 0b 72p requeues 0 The problem is we only count qlen for HTB qdisc but not backlog. We need to update backlog too when we update qlen, so that we can at least know the average packet length. Cc: Jamal Hadi Salim <jhs@mojatatu.com> Acked-by:
Jamal Hadi Salim <jhs@mojatatu.com> Signed-off-by:
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WANG Cong authored
[ Upstream commit 2ccccf5f ] When the bottom qdisc decides to, for example, drop some packet, it calls qdisc_tree_decrease_qlen() to update the queue length for all its ancestors, we need to update the backlog too to keep the stats on root qdisc accurate. Cc: Jamal Hadi Salim <jhs@mojatatu.com> Acked-by:
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WANG Cong authored
[ Upstream commit 86a7996c ] Remove nearly duplicated code and prepare for the following patch. Cc: Jamal Hadi Salim <jhs@mojatatu.com> Acked-by:
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Jann Horn authored
[ Upstream commit 8358b02b ] When bpf(BPF_PROG_LOAD, ...) was invoked with a BPF program whose bytecode references a non-map file descriptor as a map file descriptor, the error handling code called fdput() twice instead of once (in __bpf_map_get() and in replace_map_fd_with_map_ptr()). If the file descriptor table of the current task is shared, this causes f_count to be decremented too much, allowing the struct file to be freed while it is still in use (use-after-free). This can be exploited to gain root privileges by an unprivileged user. This bug was introduced in commit 0246e64d ("bpf: handle pseudo BPF_LD_IMM64 insn"), but is only exploitable since commit 1be7f75d ("bpf: enable non-root eBPF programs") because previously, CAP_SYS_ADMIN was required to reach the vulnerable code. (posted publicly according to request by maintainer) Signed-off-by:
Jann Horn <jannh@google.com> Signed-off-by:
Linus Torvalds <torvalds@linux-foundation.org> Acked-by:
Alexei Starovoitov <ast@kernel.org> Acked-by:
Daniel Borkmann <daniel@iogearbox.net> Signed-off-by:
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Eric Dumazet authored
[ Upstream commit fc96256c ] When multiple skb are TX-completed in a row, we might incorrectly keep a timestamp of a prior skb and cause extra work. Fixes: ec693d47 ("net/mlx4_en: Add HW timestamping (TS) support") Signed-off-by:
Eran Ben Elisha <eranbe@mellanox.com> Signed-off-by:
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Paolo Abeni authored
[ Upstream commit 391a2033 ] After commit fbd40ea0 ("ipv4: Don't do expensive useless work during inetdev destroy.") when deleting an interface, fib_del_ifaddr() can be executed without any primary address present on the dead interface. The above is safe, but triggers some "bug: prim == NULL" warnings. This commit avoids warning if the in_dev is dead Signed-off-by:
Paolo Abeni <pabeni@redhat.com> Signed-off-by:
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Simon Horman authored
[ Upstream commit b4f70527 ] When using masked actions the ipv6_proto field of an action to set IPv6 fields may be zero rather than the prevailing protocol which will result in skipping checksum recalculation. This patch resolves the problem by relying on the protocol in the flow key rather than that in the set field action. Fixes: 83d2b9ba ("net: openvswitch: Support masked set actions.") Cc: Jarno Rajahalme <jrajahalme@nicira.com> Signed-off-by:
Simon Horman <simon.horman@netronome.com> Signed-off-by:
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Ben Hutchings authored
[ Upstream commit f43bfaed ] atl2 includes NETIF_F_SG in hw_features even though it has no support for non-linear skbs. This bug was originally harmless since the driver does not claim to implement checksum offload and that used to be a requirement for SG. Now that SG and checksum offload are independent features, if you explicitly enable SG *and* use one of the rare protocols that can use SG without checkusm offload, this potentially leaks sensitive information (before you notice that it just isn't working). Therefore this obscure bug has been designated CVE-2016-2117. Reported-by:
Justin Yackoski <jyackoski@crypto-nite.com> Signed-off-by:
Ben Hutchings <ben@decadent.org.uk> Fixes: ec5f0615 ("net: Kill link between CSUM and SG features.") Signed-off-by:
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Alexei Starovoitov authored
[ Upstream commit d82bccc6 ] verifier must check for reserved size bits in instruction opcode and reject BPF_LD | BPF_ABS | BPF_DW and BPF_LD | BPF_IND | BPF_DW instructions, otherwise interpreter will WARN_RATELIMIT on them during execution. Fixes: ddd872bc ("bpf: verifier: add checks for BPF_ABS | BPF_IND instructions") Signed-off-by:
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Lars Persson authored
[ Upstream commit 3dcd493f ] A failure in validate_xmit_skb_list() triggered an unconditional call to dev_requeue_skb with skb=NULL. This slowly grows the queue discipline's qlen count until all traffic through the queue stops. We take the optimistic approach and continue running the queue after a failure since it is unknown if later packets also will fail in the validate path. Fixes: 55a93b3e ("qdisc: validate skb without holding lock") Signed-off-by:
Lars Persson <larper@axis.com> Acked-by:
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Mathias Krause authored
[ Upstream commit 309cf37f ] Because we miss to wipe the remainder of i->addr[] in packet_mc_add(), pdiag_put_mclist() leaks uninitialized heap bytes via the PACKET_DIAG_MCLIST netlink attribute. Fix this by explicitly memset(0)ing the remaining bytes in i->addr[]. Fixes: eea68e2f ("packet: Report socket mclist info via diag module") Signed-off-by:
Mathias Krause <minipli@googlemail.com> Cc: Eric W. Biederman <ebiederm@xmission.com> Cc: Pavel Emelyanov <xemul@parallels.com> Acked-by:
Pavel Emelyanov <xemul@virtuozzo.com> Signed-off-by:
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Chris Friesen authored
[ Upstream commit d6d5e999 ] For local routes that require a particular output interface we do not want to cache the result. Caching the result causes incorrect behaviour when there are multiple source addresses on the interface. The end result being that if the intended recipient is waiting on that interface for the packet he won't receive it because it will be delivered on the loopback interface and the IP_PKTINFO ipi_ifindex will be set to the loopback interface as well. This can be tested by running a program such as "dhcp_release" which attempts to inject a packet on a particular interface so that it is received by another program on the same board. The receiving process should see an IP_PKTINFO ipi_ifndex value of the source interface (e.g., eth1) instead of the loopback interface (e.g., lo). The packet will still appear on the loopback interface in tcpdump but the important aspect is that the CMSG info is correct. Sample dhcp_release command line: dhcp_release eth1 192.168.204.222 02:11:33:22:44:66 Signed-off-by:
Allain Legacy <allain.legacy@windriver.com> Signed off-by: Chris Friesen <chris.friesen@windriver.com> Reviewed-by:
Julian Anastasov <ja@ssi.bg> Signed-off-by:
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David S. Miller authored
[ Upstream commit a36a0d40 ] In particular, make sure we check for decnet private presence for loopback devices. Signed-off-by:
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Srinivas Pandruvada authored
[ Upstream commit a2121167 ] There are several reports of freeze on enabling HWP (Hardware PStates) feature on Skylake-based systems by the Intel P-states driver. The root cause is identified as the HWP interrupts causing BIOS code to freeze. HWP interrupts use the thermal LVT which can be handled by Linux natively, but on the affected Skylake-based systems SMM will respond to it by default. This is a problem for several reasons: - On the affected systems the SMM thermal LVT handler is broken (it will crash when invoked) and a BIOS update is necessary to fix it. - With thermal interrupt handled in SMM we lose all of the reporting features of the arch/x86/kernel/cpu/mcheck/therm_throt driver. - Some thermal drivers like x86-package-temp depend on the thermal threshold interrupts signaled via the thermal LVT. - The HWP interrupts are useful for debugging and tuning performance (if the kernel can handle them). The native handling of thermal interrupts needs to be enabled because of that. This requires some way to tell SMM that the OS can handle thermal interrupts. That can be done by using _OSC/_PDC in processor scope very early during ACPI initialization. The meaning of _OSC/_PDC bit 12 in processor scope is whether or not the OS supports native handling of interrupts for Collaborative Processor Performance Control (CPPC) notifications. Since on HWP-capable systems CPPC is a firmware interface to HWP, setting this bit effectively tells the firmware that the OS will handle thermal interrupts natively going forward. For details on _OSC/_PDC refer to: http://www.intel.com/content/www/us/en/standards/processor-vendor-specific-acpi-specification.html To implement the _OSC/_PDC handshake as described, introduce a new function, acpi_early_processor_osc(), that walks the ACPI namespace looking for ACPI processor objects and invokes _OSC for them with bit 12 in the capabilities buffer set and terminates the namespace walk on the first success. Also modify intel_thermal_interrupt() to clear HWP status bits in the HWP_STATUS MSR to acknowledge HWP interrupts (which prevents them from firing continuously). Signed-off-by:
Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> [ rjw: Subject & changelog, function rename ] Signed-off-by:
Rafael J. Wysocki <rafael.j.wysocki@intel.com> Signed-off-by:
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Richard Leitner authored
[ Upstream commit 05be8d41 ] If i2c_device_id *id is NULL and acpi_match_device returns NULL too, then chipset may be unitialized when accessing &ak_def_array[chipset] in ak8975_probe. Therefore initialize chipset to AK_MAX_TYPE, which will return an error when not changed. This patch fixes the following maybe-uninitialized warning: drivers/iio/magnetometer/ak8975.c: In function ‘ak8975_probe’: drivers/iio/magnetometer/ak8975.c:788:14: warning: ‘chipset’ may be used uninitialized in this function [-Wmaybe-uninitialized] data->def = &ak_def_array[chipset]; Signed-off-by:
Richard Leitner <dev@g0hl1n.net> Cc: <Stable@vger.kernel.org> Signed-off-by:
Jonathan Cameron <jic23@kernel.org> Signed-off-by:
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Sven Eckelmann authored
[ Upstream commit d1a65f17 ] _batadv_update_route rcu_derefences orig_ifinfo->router outside of a spinlock protected region to print some information messages to the debug log. But this pointer is not checked again when the new pointer is assigned in the spinlock protected region. Thus is can happen that the value of orig_ifinfo->router changed in the meantime and thus the reference counter of the wrong router gets reduced after the spinlock protected region. Just rcu_dereferencing the value of orig_ifinfo->router inside the spinlock protected region (which also set the new pointer) is enough to get the correct old router object. Fixes: e1a5382f ("batman-adv: Make orig_node->router an rcu protected pointer") Signed-off-by:
Sven Eckelmann <sven@narfation.org> Signed-off-by:
Marek Lindner <mareklindner@neomailbox.ch> Signed-off-by:
Antonio Quartulli <a@unstable.cc> Signed-off-by:
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Linus Lüssing authored
[ Upstream commit c4fdb6cf ] When removing a single interface while a broadcast or ogm packet is still pending then we will free the forward packet without releasing the queue slots again. This patch is supposed to fix this issue. Fixes: 6d5808d4 ("batman-adv: Add missing hardif_free_ref in forw_packet_free") Signed-off-by:
Linus Lüssing <linus.luessing@c0d3.blue> [sven@narfation.org: fix conflicts with current version] Signed-off-by:
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Sven Eckelmann authored
[ Upstream commit c7829666 ] The encapsulated ethernet and VLAN header may be outside the received ethernet frame. Thus the skb buffer size has to be checked before it can be parsed to find out if it encapsulates another batman-adv packet. Fixes: 42019357 ("batman-adv: softif bridge loop avoidance") Signed-off-by:
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Jason Baron authored
[ Upstream commit bc22af74 ] Khugepaged attempts to raise min_free_kbytes if its set too low. However, on boot khugepaged sets min_free_kbytes first from subsys_initcall(), and then the mm 'core' over-rides min_free_kbytes after from init_per_zone_wmark_min(), via a module_init() call. Khugepaged used to use a late_initcall() to set min_free_kbytes (such that it occurred after the core initialization), however this was removed when the initialization of min_free_kbytes was integrated into the starting of the khugepaged thread. The fix here is simply to invoke the core initialization using a core_initcall() instead of module_init(), such that the previous initialization ordering is restored. I didn't restore the late_initcall() since start_stop_khugepaged() already sets min_free_kbytes via set_recommended_min_free_kbytes(). This was noticed when we had a number of page allocation failures when moving a workload to a kernel with this new initialization ordering. On an 8GB system this restores min_free_kbytes back to 67584 from 11365 when CONFIG_TRANSPARENT_HUGEPAGE=y is set and either CONFIG_TRANSPARENT_HUGEPAGE_ALWAYS=y or CONFIG_TRANSPARENT_HUGEPAGE_MADVISE=y. Fixes: 79553da2 ("thp: cleanup khugepaged startup") Signed-off-by:
Jason Baron <jbaron@akamai.com> Acked-by:
Kirill A. Shutemov <kirill.shutemov@linux.intel.com> Acked-by:
David Rientjes <rientjes@google.com> Signed-off-by:
Andrew Morton <akpm@linux-foundation.org> Signed-off-by:
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Mathias Krause authored
[ Upstream commit 8148a73c ] If /proc/<PID>/environ gets read before the envp[] array is fully set up in create_{aout,elf,elf_fdpic,flat}_tables(), we might end up trying to read more bytes than are actually written, as env_start will already be set but env_end will still be zero, making the range calculation underflow, allowing to read beyond the end of what has been written. Fix this as it is done for /proc/<PID>/cmdline by testing env_end for zero. It is, apparently, intentionally set last in create_*_tables(). This bug was found by the PaX size_overflow plugin that detected the arithmetic underflow of 'this_len = env_end - (env_start + src)' when env_end is still zero. The expected consequence is that userland trying to access /proc/<PID>/environ of a not yet fully set up process may get inconsistent data as we're in the middle of copying in the environment variables. Fixes: https://forums.grsecurity.net/viewtopic.php?f=3&t=4363 Fixes: https://bugzilla.kernel.org/show_bug.cgi?id=116461Signed-off-by:
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Knut Wohlrab authored
[ Upstream commit 6984ab1a ] A wrong decoding of the touch coordinate message causes a wrong touch ID. Touch ID for dual touch must be 0 or 1. According to the actual Neonode nine byte touch coordinate coding, the state is transported in the lower nibble and the touch ID in the higher nibble of payload byte five. Signed-off-by:
Knut Wohlrab <Knut.Wohlrab@de.bosch.com> Signed-off-by:
Oleksij Rempel <linux@rempel-privat.de> Signed-off-by:
Dirk Behme <dirk.behme@de.bosch.com> Signed-off-by:
Dmitry Torokhov <dmitry.torokhov@gmail.com> Signed-off-by:
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