- Linux-stable-mirror - lists.linaro.org

[Linux-stable-mirror] [PATCH 1/2] can: af_can: can_rcv(): replace WARN_ONCE by pr_warn_once

by Marc Kleine-Budde

If an invalid CAN frame is received, from a driver or from a tun interface, a Kernel warning is generated. This patch replaces the WARN_ONCE by a simple pr_warn_once, so that a kernel, bootet with panic_on_warn, does not panic. A printk seems to be more appropriate here. Reported-by: syzbot+4386709c0c1284dca827(a)syzkaller.appspotmail.com Suggested-by: Dmitry Vyukov <dvyukov(a)google.com> Cc: linux-stable <stable(a)vger.kernel.org> Signed-off-by: Marc Kleine-Budde <mkl(a)pengutronix.de> --- net/can/af_can.c | 18 +++++++----------- 1 file changed, 7 insertions(+), 11 deletions(-) diff --git a/net/can/af_can.c b/net/can/af_can.c index 003b2d6d655f..ae835382e678 100644 --- a/net/can/af_can.c +++ b/net/can/af_can.c @@ -721,20 +721,16 @@ static int can_rcv(struct sk_buff *skb, struct net_device *dev, { struct canfd_frame *cfd = (struct canfd_frame *)skb->data; - if (WARN_ONCE(dev->type != ARPHRD_CAN || - skb->len != CAN_MTU || - cfd->len > CAN_MAX_DLEN, - "PF_CAN: dropped non conform CAN skbuf: " - "dev type %d, len %d, datalen %d\n", - dev->type, skb->len, cfd->len)) - goto drop; + if (unlikely(dev->type != ARPHRD_CAN || skb->len != CAN_MTU || + cfd->len > CAN_MAX_DLEN)) { + pr_warn_once("PF_CAN: dropped non conform CAN skbuf: dev type %d, len %d, datalen %d\n", + dev->type, skb->len, cfd->len); + kfree_skb(skb); + return NET_RX_DROP; + } can_receive(skb, dev); return NET_RX_SUCCESS; - -drop: - kfree_skb(skb); - return NET_RX_DROP; } static int canfd_rcv(struct sk_buff *skb, struct net_device *dev, -- 2.15.1

7 years, 9 months

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[Linux-stable-mirror] [PULL v2 3/3] arm64: KVM: Fix SMCCC handling of unimplemented SMC/HVC calls

by Christoffer Dall

From: Marc Zyngier <marc.zyngier(a)arm.com> KVM doesn't follow the SMCCC when it comes to unimplemented calls, and inject an UNDEF instead of returning an error. Since firmware calls are now used for security mitigation, they are becoming more common, and the undef is counter productive. Instead, let's follow the SMCCC which states that -1 must be returned to the caller when getting an unknown function number. Cc: <stable(a)vger.kernel.org> Signed-off-by: Marc Zyngier <marc.zyngier(a)arm.com> Signed-off-by: Christoffer Dall <christoffer.dall(a)linaro.org> --- arch/arm64/kvm/handle_exit.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/arch/arm64/kvm/handle_exit.c b/arch/arm64/kvm/handle_exit.c index 304203fa9e33..e60494f1eef9 100644 --- a/arch/arm64/kvm/handle_exit.c +++ b/arch/arm64/kvm/handle_exit.c @@ -45,7 +45,7 @@ static int handle_hvc(struct kvm_vcpu *vcpu, struct kvm_run *run) ret = kvm_psci_call(vcpu); if (ret < 0) { - kvm_inject_undefined(vcpu); + vcpu_set_reg(vcpu, 0, ~0UL); return 1; } @@ -54,7 +54,7 @@ static int handle_hvc(struct kvm_vcpu *vcpu, struct kvm_run *run) static int handle_smc(struct kvm_vcpu *vcpu, struct kvm_run *run) { - kvm_inject_undefined(vcpu); + vcpu_set_reg(vcpu, 0, ~0UL); return 1; } -- 2.14.2

7 years, 9 months

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[Linux-stable-mirror] [PULL v2 1/3] KVM: arm/arm64: Check pagesize when allocating a hugepage at Stage 2

by Christoffer Dall

From: Punit Agrawal <punit.agrawal(a)arm.com> KVM only supports PMD hugepages at stage 2 but doesn't actually check that the provided hugepage memory pagesize is PMD_SIZE before populating stage 2 entries. In cases where the backing hugepage size is smaller than PMD_SIZE (such as when using contiguous hugepages), KVM can end up creating stage 2 mappings that extend beyond the supplied memory. Fix this by checking for the pagesize of userspace vma before creating PMD hugepage at stage 2. Fixes: 66b3923a1a0f77a ("arm64: hugetlb: add support for PTE contiguous bit") Signed-off-by: Punit Agrawal <punit.agrawal(a)arm.com> Cc: Marc Zyngier <marc.zyngier(a)arm.com> Cc: <stable(a)vger.kernel.org> # v4.5+ Reviewed-by: Christoffer Dall <christoffer.dall(a)linaro.org> Signed-off-by: Christoffer Dall <christoffer.dall(a)linaro.org> --- virt/kvm/arm/mmu.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/virt/kvm/arm/mmu.c b/virt/kvm/arm/mmu.c index b4b69c2d1012..9dea96380339 100644 --- a/virt/kvm/arm/mmu.c +++ b/virt/kvm/arm/mmu.c @@ -1310,7 +1310,7 @@ static int user_mem_abort(struct kvm_vcpu *vcpu, phys_addr_t fault_ipa, return -EFAULT; } - if (is_vm_hugetlb_page(vma) && !logging_active) { + if (vma_kernel_pagesize(vma) == PMD_SIZE && !logging_active) { hugetlb = true; gfn = (fault_ipa & PMD_MASK) >> PAGE_SHIFT; } else { -- 2.14.2

7 years, 9 months

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[Linux-stable-mirror] [PATCH] x86/pti: Fix !PCID and sanitize defines

by Thomas Gleixner

The switch to the user space page tables in the low level ASM code sets unconditionally bit 12 and bit 11 of CR3. Bit 12 is switching the base address of the page directory to the user part, bit 11 is switching the PCID to the PCID associated with the user page tables. This fails on a machine which lacks PCID support because bit 11 is set in CR3. Bit 11 is reserved when PCID is inactive. While the Intel SDM claims that the reserved bits are ignored when PCID is disabled, the AMD APM states that they should be cleared. This went unnoticed as the AMD APM was not checked when the code was developed and reviewed and test systems with Intel CPUs never failed to boot. The report is against a Centos 6 host where the guest fails to boot, so it's not yet clear whether this is a virt issue or can happen on real hardware too, but thats irrelevant as the AMD APM clearly ask for clearing the reserved bits. Make sure that on non PCID machines bit 11 is not set by the page table switching code. Andy suggested to rename the related bits and masks so they are clearly describing what they should be used for, which is done as well for clarity. That split could have been done with alternatives but the macro hell is horrible and ugly. This can be done on top if someone cares to remove the extra orq. For now it's a straight forward fix. Fixes: 6fd166aae78c ("x86/mm: Use/Fix PCID to optimize user/kernel switches") Reported-by: Laura Abbott <labbott(a)redhat.com> Signed-off-by: Thomas Gleixner <tglx(a)linutronix.de> Cc: Andy Lutomirski <luto(a)kernel.org> Cc: Willy Tarreau <w(a)1wt.eu> Cc: Peter Zijlstra <peterz(a)infradead.org> Cc: Borislav Petkov <bp(a)alien8.de> Cc: stable(a)vger.kernel.org --- arch/x86/entry/calling.h | 36 +++++++++++++++++---------------- arch/x86/include/asm/processor-flags.h | 2 - arch/x86/include/asm/tlbflush.h | 6 ++--- 3 files changed, 23 insertions(+), 21 deletions(-) --- a/arch/x86/entry/calling.h +++ b/arch/x86/entry/calling.h @@ -198,8 +198,11 @@ For 32-bit we have the following convent * PAGE_TABLE_ISOLATION PGDs are 8k. Flip bit 12 to switch between the two * halves: */ -#define PTI_SWITCH_PGTABLES_MASK (1<<PAGE_SHIFT) -#define PTI_SWITCH_MASK (PTI_SWITCH_PGTABLES_MASK|(1<<X86_CR3_PTI_SWITCH_BIT)) +#define PTI_USER_PGTABLE_BIT PAGE_SHIFT +#define PTI_USER_PGTABLE_MASK (1 << PTI_USER_PGTABLE_BIT) +#define PTI_USER_PCID_BIT X86_CR3_PTI_PCID_USER_BIT +#define PTI_USER_PCID_MASK (1 << PTI_USER_PCID_BIT) +#define PTI_USER_PGTABLE_AND_PCID_MASK (PTI_USER_PCID_MASK | PTI_USER_PGTABLE_MASK) .macro SET_NOFLUSH_BIT reg:req bts $X86_CR3_PCID_NOFLUSH_BIT, \reg @@ -208,7 +211,7 @@ For 32-bit we have the following convent .macro ADJUST_KERNEL_CR3 reg:req ALTERNATIVE "", "SET_NOFLUSH_BIT \reg", X86_FEATURE_PCID /* Clear PCID and "PAGE_TABLE_ISOLATION bit", point CR3 at kernel pagetables: */ - andq $(~PTI_SWITCH_MASK), \reg + andq $(~PTI_USER_PGTABLE_AND_PCID_MASK), \reg .endm .macro SWITCH_TO_KERNEL_CR3 scratch_reg:req @@ -239,15 +242,19 @@ For 32-bit we have the following convent /* Flush needed, clear the bit */ btr \scratch_reg, THIS_CPU_user_pcid_flush_mask movq \scratch_reg2, \scratch_reg - jmp .Lwrcr3_\@ + jmp .Lwrcr3_pcid_\@ .Lnoflush_\@: movq \scratch_reg2, \scratch_reg SET_NOFLUSH_BIT \scratch_reg +.Lwrcr3_pcid_\@: + /* Flip the ASID to the user version */ + orq $(PTI_USER_PCID_MASK), \scratch_reg + .Lwrcr3_\@: - /* Flip the PGD and ASID to the user version */ - orq $(PTI_SWITCH_MASK), \scratch_reg + /* Flip the PGD to the user version */ + orq $(PTI_USER_PGTABLE_MASK), \scratch_reg mov \scratch_reg, %cr3 .Lend_\@: .endm @@ -263,17 +270,12 @@ For 32-bit we have the following convent movq %cr3, \scratch_reg movq \scratch_reg, \save_reg /* - * Is the "switch mask" all zero? That means that both of - * these are zero: - * - * 1. The user/kernel PCID bit, and - * 2. The user/kernel "bit" that points CR3 to the - * bottom half of the 8k PGD - * - * That indicates a kernel CR3 value, not a user CR3. + * Test the user pagetable bit. If set, then the user page tables + * are active. If clear CR3 already has the kernel page table + * active. */ - testq $(PTI_SWITCH_MASK), \scratch_reg - jz .Ldone_\@ + bt $PTI_USER_PGTABLE_BIT, \scratch_reg + jnc .Ldone_\@ ADJUST_KERNEL_CR3 \scratch_reg movq \scratch_reg, %cr3 @@ -290,7 +292,7 @@ For 32-bit we have the following convent * KERNEL pages can always resume with NOFLUSH as we do * explicit flushes. */ - bt $X86_CR3_PTI_SWITCH_BIT, \save_reg + bt $PTI_USER_PGTABLE_BIT, \save_reg jnc .Lnoflush_\@ /* --- a/arch/x86/include/asm/processor-flags.h +++ b/arch/x86/include/asm/processor-flags.h @@ -40,7 +40,7 @@ #define CR3_NOFLUSH BIT_ULL(63) #ifdef CONFIG_PAGE_TABLE_ISOLATION -# define X86_CR3_PTI_SWITCH_BIT 11 +# define X86_CR3_PTI_PCID_USER_BIT 11 #endif #else --- a/arch/x86/include/asm/tlbflush.h +++ b/arch/x86/include/asm/tlbflush.h @@ -81,13 +81,13 @@ static inline u16 kern_pcid(u16 asid) * Make sure that the dynamic ASID space does not confict with the * bit we are using to switch between user and kernel ASIDs. */ - BUILD_BUG_ON(TLB_NR_DYN_ASIDS >= (1 << X86_CR3_PTI_SWITCH_BIT)); + BUILD_BUG_ON(TLB_NR_DYN_ASIDS >= (1 << X86_CR3_PTI_PCID_USER_BIT)); /* * The ASID being passed in here should have respected the * MAX_ASID_AVAILABLE and thus never have the switch bit set. */ - VM_WARN_ON_ONCE(asid & (1 << X86_CR3_PTI_SWITCH_BIT)); + VM_WARN_ON_ONCE(asid & (1 << X86_CR3_PTI_PCID_USER_BIT)); #endif /* * The dynamically-assigned ASIDs that get passed in are small @@ -112,7 +112,7 @@ static inline u16 user_pcid(u16 asid) { u16 ret = kern_pcid(asid); #ifdef CONFIG_PAGE_TABLE_ISOLATION - ret |= 1 << X86_CR3_PTI_SWITCH_BIT; + ret |= 1 << X86_CR3_PTI_PCID_USER_BIT; #endif return ret; }

7 years, 9 months

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[Linux-stable-mirror] [PATCH 3.10.y] [FIX BAD BACKPORT] Btrfs: add missing brelse when superblock checksum fails

by Jeff Mahoney

Commit b2acdddfad13c38a1e8b927d83c3cf321f63601a upstream. linux-3.10.y commit bf00d124e07 (Btrfs: add missing brelse when superblock checksum fails) was misapplied to a later error handling site. The result is that it doesn't actually free the buffer on checksum failure but does attempt to double free the buffer if unsupported features are used. The backport of b2acdddfad1 in other branches is correct. Cc: <stable(a)vger.kernel.org> # 3.10 Cc: Anand Jain <anand.jain(a)oracle.com> Signed-off-by: Jeff Mahoney <jeffm(a)suse.com> --- fs/btrfs/disk-io.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c index 9612a01198df..c690886f2813 100644 --- a/fs/btrfs/disk-io.c +++ b/fs/btrfs/disk-io.c @@ -2311,6 +2311,7 @@ int open_ctree(struct super_block *sb, if (btrfs_check_super_csum(bh->b_data)) { printk(KERN_ERR "btrfs: superblock checksum mismatch\n"); err = -EINVAL; + brelse(bh); goto fail_alloc; } @@ -2437,7 +2438,6 @@ int open_ctree(struct super_block *sb, "unsupported option features (%Lx).\n", (unsigned long long)features); err = -EINVAL; - brelse(bh); goto fail_alloc; } -- 2.14.2 -- Jeff Mahoney SUSE Labs

7 years, 9 months

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[Linux-stable-mirror] [PATCH 4.9 00/75] 4.9.74-stable review

by Greg Kroah-Hartman

This is the start of the stable review cycle for the 4.9.74 release. There are 75 patches in this series, all will be posted as a response to this one. If anyone has any issues with these being applied, please let me know. Responses should be made by Wed Jan 3 14:00:03 UTC 2018. Anything received after that time might be too late. The whole patch series can be found in one patch at: kernel.org/pub/linux/kernel/v4.x/stable-review/patch-4.9.74-rc1.gz or in the git tree and branch at: git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git linux-4.9.y and the diffstat can be found below. thanks, greg k-h ------------- Pseudo-Shortlog of commits: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> Linux 4.9.74-rc1 Johan Hovold <johan(a)kernel.org> tty: fix tty_ldisc_receive_buf() documentation Linus Torvalds <torvalds(a)linux-foundation.org> n_tty: fix EXTPROC vs ICANON interaction with TIOCINQ (aka FIONREAD) Thomas Gleixner <tglx(a)linutronix.de> x86/smpboot: Remove stale TLB flush invocations Thomas Gleixner <tglx(a)linutronix.de> nohz: Prevent a timer interrupt storm in tick_nohz_stop_sched_tick() Thomas Gleixner <tglx(a)linutronix.de> timers: Reinitialize per cpu bases on hotplug Thomas Gleixner <tglx(a)linutronix.de> timers: Invoke timer_start_debug() where it makes sense Anna-Maria Gleixner <anna-maria(a)linutronix.de> timers: Use deferrable base independent of base::nohz_active Daniel Thompson <daniel.thompson(a)linaro.org> usb: xhci: Add XHCI_TRUST_TX_LENGTH for Renesas uPD720201 Mathias Nyman <mathias.nyman(a)linux.intel.com> USB: Fix off by one in type-specific length check of BOS SSP capability Oliver Neukum <oneukum(a)suse.com> usb: add RESET_RESUME for ELSA MicroLink 56K Dmitry Fleytman Dmitry Fleytman <dmitry.fleytman(a)gmail.com> usb: Add device quirk for Logitech HD Pro Webcam C925e SZ Lin (林上智) <sz.lin(a)moxa.com> USB: serial: option: adding support for YUGA CLM920-NC5 Daniele Palmas <dnlplm(a)gmail.com> USB: serial: option: add support for Telit ME910 PID 0x1101 Reinhard Speyerer <rspmn(a)arcor.de> USB: serial: qcserial: add Sierra Wireless EM7565 Max Schulze <max.schulze(a)posteo.de> USB: serial: ftdi_sio: add id for Airbus DS P8GR Shuah Khan <shuah(a)kernel.org> usbip: vhci: stop printing kernel pointer addresses in messages Shuah Khan <shuah(a)kernel.org> usbip: stub: stop printing kernel pointer addresses in messages Shuah Khan <shuah(a)kernel.org> usbip: prevent leaking socket pointer address in messages Juan Zea <juan.zea(a)qindel.com> usbip: fix usbip bind writing random string after command in match_busid Julian Wiedmann <jwi(a)linux.vnet.ibm.com> s390/qeth: update takeover IPs after configuration change Julian Wiedmann <jwi(a)linux.vnet.ibm.com> s390/qeth: lock IP table while applying takeover changes Julian Wiedmann <jwi(a)linux.vnet.ibm.com> s390/qeth: don't apply takeover changes to RXIP Julian Wiedmann <jwi(a)linux.vnet.ibm.com> s390/qeth: apply takeover changes when mode is toggled Moni Shoua <monis(a)mellanox.com> net/mlx5: Fix error flow in CREATE_QP command Gal Pressman <galp(a)mellanox.com> net/mlx5e: Prevent possible races in VXLAN control flow Gal Pressman <galp(a)mellanox.com> net/mlx5e: Add refcount to VXLAN structure Gal Pressman <galp(a)mellanox.com> net/mlx5e: Fix possible deadlock of VXLAN lock Gal Pressman <galp(a)mellanox.com> net/mlx5e: Fix features check of IPv6 traffic Eran Ben Elisha <eranbe(a)mellanox.com> net/mlx5: Fix rate limit packet pacing naming and struct Yousuk Seung <ysseung(a)google.com> tcp: invalidate rate samples during SACK reneging Willem de Bruijn <willemb(a)google.com> sock: free skb in skb_complete_tx_timestamp on error Grygorii Strashko <grygorii.strashko(a)ti.com> net: phy: micrel: ksz9031: reconfigure autoneg after phy autoneg workaround Eric W. Biederman <ebiederm(a)xmission.com> net: Fix double free and memory corruption in get_net_ns_by_id() Andrew Lunn <andrew(a)lunn.ch> net: fec: Allow reception of frames bigger than 1522 bytes Nikolay Aleksandrov <nikolay(a)cumulusnetworks.com> net: bridge: fix early call to br_stp_change_bridge_id and plug newlink leaks Ido Schimmel <idosch(a)mellanox.com> ipv4: Fix use-after-free when flushing FIB tables Nikita V. Shirokov <tehnerd(a)fb.com> adding missing rcu_read_unlock in ipxip6_rcv Tonghao Zhang <xiangxia.m.yue(a)gmail.com> sctp: Replace use of sockets_allocated with specified macro. Tobias Jordan <Tobias.Jordan(a)elektrobit.com> net: mvmdio: disable/unprepare clocks in EPROBE_DEFER case Mohamed Ghannam <simo.ghannam(a)gmail.com> net: ipv4: fix for a race condition in raw_sendmsg Brian King <brking(a)linux.vnet.ibm.com> tg3: Fix rx hang on MTU change with 5717/5719 Christoph Paasch <cpaasch(a)apple.com> tcp md5sig: Use skb's saddr when replying to an incoming segment Neal Cardwell <ncardwell(a)google.com> tcp_bbr: record "full bw reached" decision in new full_bw_reached bit Avinash Repaka <avinash.repaka(a)oracle.com> RDS: Check cmsg_len before dereferencing CMSG_DATA Michael S. Tsirkin <mst(a)redhat.com> ptr_ring: add barriers Shaohua Li <shli(a)fb.com> net: reevalulate autoflowlabel setting after sysctl setting Sebastian Sjoholm <ssjoholm(a)mac.com> net: qmi_wwan: add Sierra EM7565 1199:9091 Kevin Cernekee <cernekee(a)chromium.org> netlink: Add netns check on taps Kevin Cernekee <cernekee(a)chromium.org> net: igmp: Use correct source address on IGMPv3 reports Fugang Duan <fugang.duan(a)nxp.com> net: fec: unmap the xmit buffer that are not transferred by DMA Eric Dumazet <edumazet(a)google.com> ipv6: mcast: better catch silly mtu values Eric Dumazet <edumazet(a)google.com> ipv4: igmp: guard against silly MTU values Linus Torvalds <torvalds(a)linux-foundation.org> kbuild: add '-fno-stack-check' to kernel build options Andy Lutomirski <luto(a)kernel.org> x86/mm/64: Fix reboot interaction with CR4.PCIDE Andy Lutomirski <luto(a)kernel.org> x86/mm: Enable CR4.PCIDE on supported systems Andy Lutomirski <luto(a)kernel.org> x86/mm: Add the 'nopcid' boot option to turn off PCID Andy Lutomirski <luto(a)kernel.org> x86/mm: Disable PCID on 32-bit kernels Andy Lutomirski <luto(a)kernel.org> x86/mm: Remove the UP asm/tlbflush.h code, always use the (formerly) SMP code Andy Lutomirski <luto(a)kernel.org> x86/mm: Reimplement flush_tlb_page() using flush_tlb_mm_range() Andy Lutomirski <luto(a)kernel.org> x86/mm: Make flush_tlb_mm_range() more predictable Andy Lutomirski <luto(a)kernel.org> x86/mm: Remove flush_tlb() and flush_tlb_current_task() Andy Lutomirski <luto(a)kernel.org> x86/vm86/32: Switch to flush_tlb_mm_range() in mark_screen_rdonly() Hui Wang <hui.wang(a)canonical.com> ALSA: hda - fix headset mic detection issue on a Dell machine Takashi Iwai <tiwai(a)suse.de> ALSA: hda: Drop useless WARN_ON() Andrew F. Davis <afd(a)ti.com> ASoC: tlv320aic31xx: Fix GPIO1 register definition Johan Hovold <johan(a)kernel.org> ASoC: twl4030: fix child-node lookup Maciej S. Szmigiero <mail(a)maciej.szmigiero.name> ASoC: fsl_ssi: AC'97 ops need regmap, clock and cleaning up on failure Johan Hovold <johan(a)kernel.org> ASoC: da7218: fix fix child-node lookup Ben Hutchings <ben.hutchings(a)codethink.co.uk> ASoC: wm_adsp: Fix validation of firmware and coeff lengths Steve Wise <swise(a)opengridcomputing.com> iw_cxgb4: Only validate the MSN for successful completions Steven Rostedt (VMware) <rostedt(a)goodmis.org> ring-buffer: Mask out the info bits when returning buffer page length Jing Xia <jing.xia(a)spreadtrum.com> tracing: Fix crash when it fails to alloc ring buffer Steven Rostedt (VMware) <rostedt(a)goodmis.org> tracing: Fix possible double free on failure of allocating trace buffer Steven Rostedt (VMware) <rostedt(a)goodmis.org> tracing: Remove extra zeroing out of the ring buffer page Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> sync objtool's copy of x86-opcode-map.txt ------------- Diffstat: Documentation/kernel-parameters.txt | 2 + Makefile | 7 +- arch/x86/Kconfig | 2 +- arch/x86/include/asm/disabled-features.h | 4 +- arch/x86/include/asm/hardirq.h | 2 +- arch/x86/include/asm/mmu.h | 6 -- arch/x86/include/asm/mmu_context.h | 2 - arch/x86/include/asm/tlbflush.h | 99 +++-------------------- arch/x86/kernel/cpu/bugs.c | 8 ++ arch/x86/kernel/cpu/common.c | 40 +++++++++ arch/x86/kernel/reboot.c | 4 + arch/x86/kernel/smpboot.c | 9 --- arch/x86/kernel/vm86_32.c | 2 +- arch/x86/mm/init.c | 2 - arch/x86/mm/tlb.c | 73 +++-------------- arch/x86/xen/enlighten.c | 6 ++ drivers/infiniband/hw/cxgb4/cq.c | 6 +- drivers/net/ethernet/broadcom/tg3.c | 4 +- drivers/net/ethernet/freescale/fec_main.c | 14 +++- drivers/net/ethernet/marvell/mvmdio.c | 3 +- drivers/net/ethernet/mellanox/mlx5/core/cmd.c | 4 +- drivers/net/ethernet/mellanox/mlx5/core/en_main.c | 3 +- drivers/net/ethernet/mellanox/mlx5/core/qp.c | 4 +- drivers/net/ethernet/mellanox/mlx5/core/rl.c | 22 ++--- drivers/net/ethernet/mellanox/mlx5/core/vxlan.c | 64 ++++++++------- drivers/net/ethernet/mellanox/mlx5/core/vxlan.h | 1 + drivers/net/phy/micrel.c | 1 + drivers/net/usb/qmi_wwan.c | 1 + drivers/s390/net/qeth_core.h | 6 +- drivers/s390/net/qeth_core_main.c | 6 +- drivers/s390/net/qeth_l3.h | 2 +- drivers/s390/net/qeth_l3_main.c | 36 +++++++-- drivers/s390/net/qeth_l3_sys.c | 75 +++++++++-------- drivers/tty/n_tty.c | 4 +- drivers/tty/tty_buffer.c | 2 +- drivers/usb/core/config.c | 2 +- drivers/usb/core/quirks.c | 6 +- drivers/usb/host/xhci-pci.c | 3 + drivers/usb/serial/ftdi_sio.c | 1 + drivers/usb/serial/ftdi_sio_ids.h | 6 ++ drivers/usb/serial/option.c | 17 ++++ drivers/usb/serial/qcserial.c | 3 + drivers/usb/usbip/stub_dev.c | 3 +- drivers/usb/usbip/stub_main.c | 5 +- drivers/usb/usbip/stub_rx.c | 7 +- drivers/usb/usbip/stub_tx.c | 6 +- drivers/usb/usbip/usbip_common.c | 14 +--- drivers/usb/usbip/vhci_hcd.c | 12 +-- drivers/usb/usbip/vhci_rx.c | 23 +++--- drivers/usb/usbip/vhci_tx.c | 3 +- include/linux/cpuhotplug.h | 2 +- include/linux/ipv6.h | 3 +- include/linux/mlx5/mlx5_ifc.h | 8 +- include/linux/ptr_ring.h | 9 +++ include/linux/tcp.h | 3 +- include/linux/timer.h | 4 +- include/net/ip.h | 2 + include/net/tcp.h | 2 +- kernel/cpu.c | 4 +- kernel/time/tick-sched.c | 19 ++++- kernel/time/timer.c | 35 +++++--- kernel/trace/ring_buffer.c | 6 +- kernel/trace/trace.c | 13 +-- net/bridge/br_netlink.c | 11 +-- net/core/net_namespace.c | 2 +- net/core/skbuff.c | 6 +- net/ipv4/devinet.c | 2 +- net/ipv4/fib_frontend.c | 9 ++- net/ipv4/igmp.c | 44 +++++++--- net/ipv4/ip_tunnel.c | 4 +- net/ipv4/raw.c | 15 ++-- net/ipv4/tcp.c | 1 + net/ipv4/tcp_bbr.c | 7 +- net/ipv4/tcp_input.c | 10 ++- net/ipv4/tcp_ipv4.c | 2 +- net/ipv4/tcp_rate.c | 10 ++- net/ipv6/af_inet6.c | 1 - net/ipv6/ip6_output.c | 12 ++- net/ipv6/ip6_tunnel.c | 2 +- net/ipv6/ipv6_sockglue.c | 1 + net/ipv6/mcast.c | 25 +++--- net/ipv6/tcp_ipv6.c | 2 +- net/netlink/af_netlink.c | 3 + net/rds/send.c | 3 + net/sctp/socket.c | 4 +- sound/hda/hdac_i915.c | 2 +- sound/pci/hda/patch_realtek.c | 5 ++ sound/soc/codecs/da7218.c | 2 +- sound/soc/codecs/tlv320aic31xx.h | 2 +- sound/soc/codecs/twl4030.c | 4 +- sound/soc/codecs/wm_adsp.c | 12 +-- sound/soc/fsl/fsl_ssi.c | 18 +++-- tools/objtool/arch/x86/insn/x86-opcode-map.txt | 2 +- tools/usb/usbip/src/utils.c | 9 ++- 94 files changed, 550 insertions(+), 429 deletions(-)

7 years, 9 months

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[Linux-stable-mirror] patch "USB: cdc-acm: Do not log urb submission errors on disconnect" added to usb-next

by gregkh＠linuxfoundation.org

This is a note to let you know that I've just added the patch titled USB: cdc-acm: Do not log urb submission errors on disconnect to my usb git tree which can be found at git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git in the usb-next branch. The patch will show up in the next release of the linux-next tree (usually sometime within the next 24 hours during the week.) The patch will also be merged in the next major kernel release during the merge window. If you have any questions about this process, please let me know. >From f0386c083c2ce85284dc0b419d7b89c8e567c09f Mon Sep 17 00:00:00 2001 From: Hans de Goede <hdegoede(a)redhat.com> Date: Sun, 14 Jan 2018 16:09:00 +0100 Subject: USB: cdc-acm: Do not log urb submission errors on disconnect When disconnected sometimes the cdc-acm driver logs errors like these: [20278.039417] cdc_acm 2-2:2.1: urb 9 failed submission with -19 [20278.042924] cdc_acm 2-2:2.1: urb 10 failed submission with -19 [20278.046449] cdc_acm 2-2:2.1: urb 11 failed submission with -19 [20278.049920] cdc_acm 2-2:2.1: urb 12 failed submission with -19 [20278.053442] cdc_acm 2-2:2.1: urb 13 failed submission with -19 [20278.056915] cdc_acm 2-2:2.1: urb 14 failed submission with -19 [20278.060418] cdc_acm 2-2:2.1: urb 15 failed submission with -19 Silence these by not logging errors when the result is -ENODEV. Signed-off-by: Hans de Goede <hdegoede(a)redhat.com> Acked-by: Oliver Neukum <oneukum(a)suse.com> Cc: stable <stable(a)vger.kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> --- drivers/usb/class/cdc-acm.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/usb/class/cdc-acm.c b/drivers/usb/class/cdc-acm.c index 8e0636c963a7..6c64ab6e80fa 100644 --- a/drivers/usb/class/cdc-acm.c +++ b/drivers/usb/class/cdc-acm.c @@ -425,7 +425,7 @@ static int acm_submit_read_urb(struct acm *acm, int index, gfp_t mem_flags) res = usb_submit_urb(acm->read_urbs[index], mem_flags); if (res) { - if (res != -EPERM) { + if (res != -EPERM && res != -ENODEV) { dev_err(&acm->data->dev, "urb %d failed submission with %d\n", index, res); -- 2.15.1

7 years, 9 months

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[Linux-stable-mirror] [PATCH] can: peak: fix potential bug in packet fragmentation

by Marc Kleine-Budde

From: Stephane Grosjean <s.grosjean(a)peak-system.com> In some rare conditions when running one PEAK USB-FD interface over a non high-speed USB controller, one useless USB fragment might be sent. This patch fixes the way a USB command is fragmented when its length is greater than 64 bytes and when the underlying USB controller is not a high-speed one. Signed-off-by: Stephane Grosjean <s.grosjean(a)peak-system.com> Cc: linux-stable <stable(a)vger.kernel.org> Signed-off-by: Marc Kleine-Budde <mkl(a)pengutronix.de> --- drivers/net/can/usb/peak_usb/pcan_usb_fd.c | 21 +++++++++++---------- 1 file changed, 11 insertions(+), 10 deletions(-) diff --git a/drivers/net/can/usb/peak_usb/pcan_usb_fd.c b/drivers/net/can/usb/peak_usb/pcan_usb_fd.c index 7ccdc3e30c98..53d6bb045e9e 100644 --- a/drivers/net/can/usb/peak_usb/pcan_usb_fd.c +++ b/drivers/net/can/usb/peak_usb/pcan_usb_fd.c @@ -184,7 +184,7 @@ static int pcan_usb_fd_send_cmd(struct peak_usb_device *dev, void *cmd_tail) void *cmd_head = pcan_usb_fd_cmd_buffer(dev); int err = 0; u8 *packet_ptr; - int i, n = 1, packet_len; + int packet_len; ptrdiff_t cmd_len; /* usb device unregistered? */ @@ -201,17 +201,13 @@ static int pcan_usb_fd_send_cmd(struct peak_usb_device *dev, void *cmd_tail) } packet_ptr = cmd_head; + packet_len = cmd_len; /* firmware is not able to re-assemble 512 bytes buffer in full-speed */ - if ((dev->udev->speed != USB_SPEED_HIGH) && - (cmd_len > PCAN_UFD_LOSPD_PKT_SIZE)) { - packet_len = PCAN_UFD_LOSPD_PKT_SIZE; - n += cmd_len / packet_len; - } else { - packet_len = cmd_len; - } + if (unlikely(dev->udev->speed != USB_SPEED_HIGH)) + packet_len = min(packet_len, PCAN_UFD_LOSPD_PKT_SIZE); - for (i = 0; i < n; i++) { + do { err = usb_bulk_msg(dev->udev, usb_sndbulkpipe(dev->udev, PCAN_USBPRO_EP_CMDOUT), @@ -224,7 +220,12 @@ static int pcan_usb_fd_send_cmd(struct peak_usb_device *dev, void *cmd_tail) } packet_ptr += packet_len; - } + cmd_len -= packet_len; + + if (cmd_len < PCAN_UFD_LOSPD_PKT_SIZE) + packet_len = cmd_len; + + } while (packet_len > 0); return err; } -- 2.15.1

7 years, 9 months

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[Linux-stable-mirror] [PATCH 4.4-stable] kaiser: Set _PAGE_NX only if supported

by Lepton Wu

This finally resolve crash if loaded under qemu + haxm. Haitao Shan pointed out that the reason of that crash is that NX bit get set for page tables. It seems we missed checking if _PAGE_NX is supported in kaiser_add_user_map See https://www.spinics.net/lists/kernel/msg2689835.html for details. Signed-off-by: Lepton Wu <ytht.net(a)gmail.com> --- arch/x86/mm/kaiser.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/arch/x86/mm/kaiser.c b/arch/x86/mm/kaiser.c index 6a7a77929a8c..936672f71139 100644 --- a/arch/x86/mm/kaiser.c +++ b/arch/x86/mm/kaiser.c @@ -198,6 +198,10 @@ static int kaiser_add_user_map(const void *__start_addr, unsigned long size, * requires that not to be #defined to 0): so mask it off here. */ flags &= ~_PAGE_GLOBAL; + /* If CPU doesn't support NX, don't set it. */ + if (!(__supported_pte_mask & _PAGE_NX)) + flags &= ~_PAGE_NX; + for (; address < end_addr; address += PAGE_SIZE) { target_address = get_pa_from_mapping(address); -- 2.16.0.rc1.238.g530d649a79-goog

7 years, 9 months

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[Linux-stable-mirror] [REGRESSION][v4.14.y][v4.15] x86/intel_rdt/cqm: Improve limbo list processing

by Joseph Salisbury

Hi Vikas, A kernel bug report was opened against Ubuntu [0]. After a kernel bisect, it was found that reverting the following commit resolved this bug: commit 24247aeeabe99eab13b798ccccc2dec066dd6f07 Author: Vikas Shivappa <vikas.shivappa(a)linux.intel.com> Date: Tue Aug 15 18:00:43 2017 -0700 x86/intel_rdt/cqm: Improve limbo list processing The regression was introduced as of v4.14-r1 and still exists with current mainline. The trace with v4.15-rc7 is in comment #44[1]. I was hoping to get your feedback, since you are the patch author. Do you think gathering any additional data will help diagnose this issue, or would it be best to submit a revert request? Thanks, Joe [0] http://pad.lv/1733662 [1] https://bugs.launchpad.net/ubuntu/+source/linux-hwe/+bug/1733662/comments/44

7 years, 9 months

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[Linux-stable-mirror] patch "USB: cdc-acm: Do not log urb submission errors on disconnect" added to usb-testing

by gregkh＠linuxfoundation.org

This is a note to let you know that I've just added the patch titled USB: cdc-acm: Do not log urb submission errors on disconnect to my usb git tree which can be found at git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git in the usb-testing branch. The patch will show up in the next release of the linux-next tree (usually sometime within the next 24 hours during the week.) The patch will be merged to the usb-next branch sometime soon, after it passes testing, and the merge window is open. If you have any questions about this process, please let me know. >From f0386c083c2ce85284dc0b419d7b89c8e567c09f Mon Sep 17 00:00:00 2001 From: Hans de Goede <hdegoede(a)redhat.com> Date: Sun, 14 Jan 2018 16:09:00 +0100 Subject: USB: cdc-acm: Do not log urb submission errors on disconnect When disconnected sometimes the cdc-acm driver logs errors like these: [20278.039417] cdc_acm 2-2:2.1: urb 9 failed submission with -19 [20278.042924] cdc_acm 2-2:2.1: urb 10 failed submission with -19 [20278.046449] cdc_acm 2-2:2.1: urb 11 failed submission with -19 [20278.049920] cdc_acm 2-2:2.1: urb 12 failed submission with -19 [20278.053442] cdc_acm 2-2:2.1: urb 13 failed submission with -19 [20278.056915] cdc_acm 2-2:2.1: urb 14 failed submission with -19 [20278.060418] cdc_acm 2-2:2.1: urb 15 failed submission with -19 Silence these by not logging errors when the result is -ENODEV. Signed-off-by: Hans de Goede <hdegoede(a)redhat.com> Acked-by: Oliver Neukum <oneukum(a)suse.com> Cc: stable <stable(a)vger.kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> --- drivers/usb/class/cdc-acm.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/usb/class/cdc-acm.c b/drivers/usb/class/cdc-acm.c index 8e0636c963a7..6c64ab6e80fa 100644 --- a/drivers/usb/class/cdc-acm.c +++ b/drivers/usb/class/cdc-acm.c @@ -425,7 +425,7 @@ static int acm_submit_read_urb(struct acm *acm, int index, gfp_t mem_flags) res = usb_submit_urb(acm->read_urbs[index], mem_flags); if (res) { - if (res != -EPERM) { + if (res != -EPERM && res != -ENODEV) { dev_err(&acm->data->dev, "urb %d failed submission with %d\n", index, res); -- 2.15.1

7 years, 9 months

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[Linux-stable-mirror] [PATCH] arm: ensure symbol is a thumb symbol in new binutils

by Jason A. Donenfeld

On older versions of binutils, \sym points to an aligned address. On newer versions of binutils, \sym sometimes points to the unaligned thumb address in mysterious and buggy circumstances. In order to homogenize this behavior, rather than adding 1, we simply OR in 1, so that already unaligned instructions don't change. This fix is required for a pedestrian THUMB2_KERNEL to boot without crashing when built with non-old binutils. While it works, the downside is that we have to add an `orr` instruction to a fast path. The assembler can't do this at assemble time via "|1" because "invalid operands (.text and *ABS* sections) for `|'", so we're forced to do this. A better solution would be to have consistent binutils behavior, or to have some kind of \sym feature detection that won't turn into a maze of version comparisons. However, it's at the moment unclear how to achieve this. The rest of this commit message contains all of the relevant information. My tests concerned these versions: broken: GNU ld (Gentoo 2.29.1 p3) 2.29.1 working: GNU ld (GNU Binutils for Ubuntu) 2.26.1 These produced the following code: --- broken 2017-11-21 17:44:14.523416082 +0100 +++ working 2017-11-21 17:44:44.548461234 +0100 @@ -133,7 +133,7 @@ 160: f01a 0ff0 tst.w sl, #240 ; 0xf0 164: d111 bne.n 18a <__sys_trace> 166: f5b7 7fc8 cmp.w r7, #400 ; 0x190 - 16a: f2af 1e6a subw lr, pc, #362 ; 0x16a + 16a: f2af 1e6b subw lr, pc, #363 ; 0x16b 16e: bf38 it cc 170: f858 f027 ldrcc.w pc, [r8, r7, lsl #2] 174: a902 add r1, sp, #8 The differing instruction corresponds with this actual line in arch/arm/kernel/entry-common.S: badr lr, ret_fast_syscall @ return address Running the broken kernel results in a runtime OOPS with: PC is at ret_fast_syscall+0x4/0x52 LR is at ret_fast_syscall+0x2/0x52 The disassembly of that function for the crashing kernel is: .text:00000000 ret_fast_syscall ; CODE XREF: sys_syscall+1C↓j .text:00000000 CPSID I ; jumptable 00000840 cases 15,18-376 .text:00000002 .text:00000002 loc_2 ; DATA XREF: sys_syscall-6BA↓o .text:00000002 LDR.W R2, [R9,#8] .text:00000006 CMP.W R2, #0xBF000000 Signed-off-by: Jason A. Donenfeld <Jason(a)zx2c4.com> Cc: stable(a)vger.kernel.org --- arch/arm/include/asm/assembler.h | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) diff --git a/arch/arm/include/asm/assembler.h b/arch/arm/include/asm/assembler.h index ad301f107dd2..c62a3b6b0a3e 100644 --- a/arch/arm/include/asm/assembler.h +++ b/arch/arm/include/asm/assembler.h @@ -194,10 +194,9 @@ */ .irp c,,eq,ne,cs,cc,mi,pl,vs,vc,hi,ls,ge,lt,gt,le,hs,lo .macro badr\c, rd, sym -#ifdef CONFIG_THUMB2_KERNEL - adr\c \rd, \sym + 1 -#else adr\c \rd, \sym +#ifdef CONFIG_THUMB2_KERNEL + orr\c \rd, \rd, 1 #endif .endm .endr -- 2.15.0

7 years, 9 months

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Re: [Linux-stable-mirror] Linux 4.14.10

by François Valenduc

No solution found to the permissions on tools/objtool/sync-check.sh ? git or patch is not smart enough for that ? It's obviously extremely easy to solve the problem, but I find that rather strange. François Valenduc Le 29/12/17 à 18:10, Greg KH a écrit : > I'm announcing the release of the 4.14.10 kernel. > > All users of the 4.14 kernel series must upgrade. > > The updated 4.14.y git tree can be found at: > git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable.git linux-4.14.y > and can be browsed at the normal kernel.org git web browser: > http://git.kernel.org/?p=linux/kernel/git/stable/linux-stable.git;a=summary > > thanks, > > greg k-h > > ------------ > > Documentation/x86/x86_64/mm.txt | 24 > Makefile | 2 > arch/arm64/kvm/hyp/debug-sr.c | 3 > arch/parisc/boot/compressed/misc.c | 4 > arch/parisc/kernel/entry.S | 12 > arch/parisc/kernel/hpmc.S | 1 > arch/powerpc/include/asm/mmu_context.h | 5 > arch/powerpc/kvm/book3s_xive.c | 7 > arch/powerpc/perf/core-book3s.c | 8 > arch/um/include/asm/mmu_context.h | 3 > arch/unicore32/include/asm/mmu_context.h | 5 > arch/x86/Kconfig | 3 > arch/x86/entry/entry_32.S | 12 > arch/x86/entry/entry_64.S | 4 > arch/x86/entry/vsyscall/vsyscall_64.c | 38 > arch/x86/include/asm/cpu_entry_area.h | 68 + > arch/x86/include/asm/desc.h | 1 > arch/x86/include/asm/espfix.h | 7 > arch/x86/include/asm/fixmap.h | 71 - > arch/x86/include/asm/inat.h | 10 > arch/x86/include/asm/invpcid.h | 53 > arch/x86/include/asm/mmu.h | 4 > arch/x86/include/asm/mmu_context.h | 54 - > arch/x86/include/asm/pgtable_32_types.h | 15 > arch/x86/include/asm/pgtable_64_types.h | 47 > arch/x86/include/asm/processor.h | 6 > arch/x86/include/asm/stacktrace.h | 4 > arch/x86/include/asm/tlbflush.h | 136 +- > arch/x86/kernel/asm-offsets.c | 4 > arch/x86/kernel/asm-offsets_32.c | 2 > arch/x86/kernel/cpu/common.c | 100 - > arch/x86/kernel/cpu/microcode/intel.c | 13 > arch/x86/kernel/dumpstack.c | 11 > arch/x86/kernel/dumpstack_32.c | 6 > arch/x86/kernel/dumpstack_64.c | 12 > arch/x86/kernel/ldt.c | 47 > arch/x86/kernel/smpboot.c | 6 > arch/x86/kernel/traps.c | 6 > arch/x86/kvm/emulate.c | 32 > arch/x86/kvm/mmu.c | 8 > arch/x86/kvm/x86.c | 2 > arch/x86/lib/x86-opcode-map.txt | 13 > arch/x86/mm/Makefile | 2 > arch/x86/mm/cpu_entry_area.c | 139 ++ > arch/x86/mm/dump_pagetables.c | 98 + > arch/x86/mm/init_32.c | 6 > arch/x86/mm/kasan_init_64.c | 29 > arch/x86/mm/pgtable_32.c | 1 > arch/x86/mm/tlb.c | 10 > arch/x86/platform/uv/tlb_uv.c | 2 > arch/x86/xen/mmu_pv.c | 2 > block/bio.c | 2 > block/blk-throttle.c | 8 > crypto/af_alg.c | 6 > crypto/algif_aead.c | 16 > crypto/algif_skcipher.c | 16 > crypto/mcryptd.c | 23 > crypto/skcipher.c | 10 > drivers/acpi/apei/erst.c | 2 > drivers/acpi/nfit/core.c | 9 > drivers/char/ipmi/ipmi_si_intf.c | 1 > drivers/clk/sunxi/clk-sun9i-mmc.c | 12 > drivers/gpu/drm/i915/i915_gem.c | 9 > drivers/gpu/drm/sun4i/sun4i_tcon.c | 4 > drivers/mfd/cros_ec_spi.c | 1 > drivers/mfd/twl4030-audio.c | 9 > drivers/mfd/twl6040.c | 12 > drivers/net/ethernet/marvell/mvneta.c | 8 > drivers/nvdimm/btt.c | 201 +++ > drivers/nvdimm/btt.h | 45 > drivers/nvdimm/pfn_devs.c | 20 > drivers/parisc/lba_pci.c | 33 > drivers/pci/pci-driver.c | 7 > drivers/pinctrl/intel/pinctrl-cherryview.c | 16 > drivers/spi/spi-armada-3700.c | 8 > drivers/spi/spi-xilinx.c | 11 > include/asm-generic/mm_hooks.h | 5 > include/asm-generic/pgtable.h | 5 > include/crypto/mcryptd.h | 1 > include/linux/bio.h | 2 > include/linux/blk_types.h | 9 > include/linux/blkdev.h | 2 > init/main.c | 6 > kernel/fork.c | 3 > net/ipv6/route.c | 58 - > sound/core/rawmidi.c | 15 > sound/pci/hda/patch_hdmi.c | 6 > sound/pci/hda/patch_realtek.c | 35 > sound/usb/mixer.c | 27 > sound/usb/quirks.c | 7 > tools/objtool/.gitignore | 2 > tools/objtool/Makefile | 30 > tools/objtool/arch/x86/Build | 10 > tools/objtool/arch/x86/decode.c | 6 > tools/objtool/arch/x86/include/asm/inat.h | 244 ++++ > tools/objtool/arch/x86/include/asm/inat_types.h | 29 > tools/objtool/arch/x86/include/asm/insn.h | 211 +++ > tools/objtool/arch/x86/include/asm/orc_types.h | 107 + > tools/objtool/arch/x86/insn/gen-insn-attr-x86.awk | 393 ------- > tools/objtool/arch/x86/insn/inat.c | 97 - > tools/objtool/arch/x86/insn/inat.h | 234 ---- > tools/objtool/arch/x86/insn/inat_types.h | 29 > tools/objtool/arch/x86/insn/insn.c | 606 ----------- > tools/objtool/arch/x86/insn/insn.h | 211 --- > tools/objtool/arch/x86/insn/x86-opcode-map.txt | 1063 ------------------- > tools/objtool/arch/x86/lib/inat.c | 97 + > tools/objtool/arch/x86/lib/insn.c | 606 +++++++++++ > tools/objtool/arch/x86/lib/x86-opcode-map.txt | 1072 ++++++++++++++++++++ > tools/objtool/arch/x86/tools/gen-insn-attr-x86.awk | 393 +++++++ > tools/objtool/orc.h | 2 > tools/objtool/orc_dump.c | 7 > tools/objtool/orc_types.h | 107 - > tools/objtool/sync-check.sh | 29 > tools/perf/util/intel-pt-decoder/x86-opcode-map.txt | 15 > tools/testing/selftests/x86/ldt_gdt.c | 9 > virt/kvm/arm/mmu.c | 10 > 116 files changed, 4023 insertions(+), 3424 deletions(-) > > Andy Lutomirski (3): > x86/vsyscall/64: Explicitly set _PAGE_USER in the pagetable hierarchy > x86/vsyscall/64: Warn and fail vsyscall emulation in NATIVE mode > x86/mm/64: Improve the memory map documentation > > Chen-Yu Tsai (1): > clk: sunxi: sun9i-mmc: Implement reset callback for reset controls > > Chris Wilson (1): > drm/i915: Flush pending GTT writes before unbinding > > Cédric Le Goater (1): > KVM: PPC: Book3S: fix XIVE migration of pending interrupts > > Dan Williams (3): > acpi, nfit: fix health event notification > libnvdimm, dax: fix 1GB-aligned namespaces vs physical misalignment > libnvdimm, pfn: fix start_pad handling for aligned namespaces > > Dave Hansen (4): > x86/entry: Rename SYSENTER_stack to CPU_ENTRY_AREA_entry_stack > x86/mm: Move the CR3 construction functions to tlbflush.h > x86/mm: Remove hard-coded ASID limit checks > x86/mm: Put MMU to hardware ASID translation in one place > > Eric Biggers (1): > crypto: skcipher - set walk.iv for zero-length inputs > > Greg Kroah-Hartman (2): > Revert "ipv6: grab rt->rt6i_ref before allocating pcpu rt" > Linux 4.14.10 > > Guneshwor Singh (1): > ALSA: hda - Add vendor id for Cannonlake HDMI codec > > Helge Deller (3): > parisc: Align os_hpmc_size on word boundary > parisc: Fix indenting in puts() > parisc: Hide Diva-built-in serial aux and graphics card > > Ingo Molnar (1): > tools/headers: Sync objtool UAPI header > > Jens Axboe (1): > block: unalign call_single_data in struct request > > Johan Hovold (2): > mfd: twl4030-audio: Fix sibling-node lookup > mfd: twl6040: Fix child-node lookup > > John David Anglin (1): > Revert "parisc: Re-enable interrupts early" > > John Einar Reitan (1): > Revert "ipmi_si: fix memory leak on new_smi" > > Jon Hunter (1): > mfd: cros ec: spi: Don't send first message too soon > > Josh Poimboeuf (3): > objtool: Move synced files to their original relative locations > objtool: Move kernel headers/code sync check to a script > objtool: Fix cross-build > > Julien Thierry (1): > arm64: kvm: Prevent restoring stale PMSCR_EL1 for vcpu > > Jussi Laako (1): > ALSA: usb-audio: Add native DSD support for Esoteric D-05X > > Kailang Yang (1): > ALSA: hda/realtek - Fix Dell AIO LineOut issue > > Laurent Vivier (1): > KVM: PPC: Book3S HV: Fix pending_pri value in kvmppc_xive_get_icp() > > Marc Zyngier (1): > KVM: arm/arm64: Fix HYP unmapping going off limits > > Maxime Chevallier (1): > spi: a3700: Fix clk prescaling for coefficient over 15 > > Maxime Ripard (1): > drm/sun4i: Fix error path handling > > Mika Westerberg (1): > pinctrl: cherryview: Mask all interrupts on Intel_Strago based systems > > Mikulas Patocka (1): > objtool: Fix 64-bit build on 32-bit host > > Paolo Bonzini (1): > kvm: x86: fix RSM when PCID is non-zero > > Peter Zijlstra (8): > x86/ldt: Rework locking > x86/doc: Remove obvious weirdnesses from the x86 MM layout documentation > x86/uv: Use the right TLB-flush API > x86/microcode: Dont abuse the TLB-flush interface > x86/mm: Use __flush_tlb_one() for kernel memory > x86/mm: Remove superfluous barriers > x86/mm: Add comments to clarify which TLB-flush functions are supposed to flush what > x86/mm: Create asm/invpcid.h > > Rafael J. Wysocki (1): > PCI / PM: Force devices to D0 in pci_pm_thaw_noirq() > > Randy Dunlap (1): > x86/decoder: Fix and update the opcodes map > > Ravi Bangoria (1): > powerpc/perf: Dereference BHRB entries safely > > Ricardo Neri (1): > x86/insn-eval: Add utility functions to get segment selector > > Ricardo Ribalda Delgado (1): > spi: xilinx: Detect stall with Unknown commands > > Sebastian Andrzej Siewior (1): > crypto: mcryptd - protect the per-CPU queue with a lock > > Shaohua Li (1): > block-throttle: avoid double charge > > Stephan Mueller (2): > crypto: af_alg - wait for data at beginning of recvmsg > crypto: af_alg - fix race accessing cipher request > > Takashi Iwai (3): > ACPI: APEI / ERST: Fix missing error handling in erst_reader() > ALSA: rawmidi: Avoid racy info ioctl via ctl device > ALSA: usb-audio: Fix the missing ctl name suffix at parsing SU > > Thomas Gleixner (9): > x86/Kconfig: Limit NR_CPUS on 32-bit to a sane amount > x86/mm/dump_pagetables: Check PAGE_PRESENT for real > x86/mm/dump_pagetables: Make the address hints correct and readable > arch, mm: Allow arch_dup_mmap() to fail > x86/ldt: Prevent LDT inheritance on exec > x86/cpu_entry_area: Move it to a separate unit > x86/cpu_entry_area: Move it out of the fixmap > init: Invoke init_espfix_bsp() from mm_init() > x86/cpu_entry_area: Prevent wraparound in setup_cpu_entry_area_ptes() on 32bit > > Vishal Verma (1): > libnvdimm, btt: Fix an incompatibility in the log layout > > Wanpeng Li (2): > KVM: MMU: Fix infinite loop when there is no available mmu page > KVM: X86: Fix load RFLAGS w/o the fixed bit > > Yelena Krivosheev (3): > net: mvneta: clear interface link status on port disable > net: mvneta: use proper rxq_number in loop on rx queues > net: mvneta: eliminate wrong call to handle rx descriptor error >

7 years, 9 months

4
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[Linux-stable-mirror] [PATCH] brcmfmac: Make sure CLM downloading is optional

by Bjorn Andersson

The presence of a CLM file is described as optional, but missing the clm blob causes the preinit to return unsuccessfully. Fix this by ignoring the return value of the brcmf_c_process_clm_blob(). Also remove the extra debug print, as brcmf_c_process_clm_blob() already did print a useful error message before returning. Fixes: fdd0bd88ceae ("brcmfmac: add CLM download support") Cc: stable(a)vger.kernel.org Signed-off-by: Bjorn Andersson <bjorn.andersson(a)linaro.org> --- This regression was introduced in v4.15-rc1, but I unfortunately didn't test WiFi until now. Included a Cc to stable@ in case you choose to pick this up after v4.15. drivers/net/wireless/broadcom/brcm80211/brcmfmac/common.c | 8 ++------ 1 file changed, 2 insertions(+), 6 deletions(-) diff --git a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/common.c b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/common.c index 6a59d0609d30..0c67ba6ae135 100644 --- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/common.c +++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/common.c @@ -278,12 +278,8 @@ int brcmf_c_preinit_dcmds(struct brcmf_if *ifp) } ri->result = err; - /* Do any CLM downloading */ - err = brcmf_c_process_clm_blob(ifp); - if (err < 0) { - brcmf_err("download CLM blob file failed, %d\n", err); - goto done; - } + /* Do any optional CLM downloading */ + brcmf_c_process_clm_blob(ifp); /* query for 'ver' to get version info from firmware */ memset(buf, 0, sizeof(buf)); -- 2.15.0

7 years, 9 months

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[Linux-stable-mirror] [tip:sched/urgent] delayacct: Account blkio completion on the correct task

by tip-bot for Josh Snyder

Commit-ID: c96f5471ce7d2aefd0dda560cc23f08ab00bc65d Gitweb: https://git.kernel.org/tip/c96f5471ce7d2aefd0dda560cc23f08ab00bc65d Author: Josh Snyder <joshs(a)netflix.com> AuthorDate: Mon, 18 Dec 2017 16:15:10 +0000 Committer: Ingo Molnar <mingo(a)kernel.org> CommitDate: Tue, 16 Jan 2018 03:29:36 +0100 delayacct: Account blkio completion on the correct task Before commit: e33a9bba85a8 ("sched/core: move IO scheduling accounting from io_schedule_timeout() into scheduler") delayacct_blkio_end() was called after context-switching into the task which completed I/O. This resulted in double counting: the task would account a delay both waiting for I/O and for time spent in the runqueue. With e33a9bba85a8, delayacct_blkio_end() is called by try_to_wake_up(). In ttwu, we have not yet context-switched. This is more correct, in that the delay accounting ends when the I/O is complete. But delayacct_blkio_end() relies on 'get_current()', and we have not yet context-switched into the task whose I/O completed. This results in the wrong task having its delay accounting statistics updated. Instead of doing that, pass the task_struct being woken to delayacct_blkio_end(), so that it can update the statistics of the correct task. Signed-off-by: Josh Snyder <joshs(a)netflix.com> Acked-by: Tejun Heo <tj(a)kernel.org> Acked-by: Balbir Singh <bsingharora(a)gmail.com> Cc: <stable(a)vger.kernel.org> Cc: Brendan Gregg <bgregg(a)netflix.com> Cc: Jens Axboe <axboe(a)kernel.dk> Cc: Linus Torvalds <torvalds(a)linux-foundation.org> Cc: Peter Zijlstra <peterz(a)infradead.org> Cc: Thomas Gleixner <tglx(a)linutronix.de> Cc: linux-block(a)vger.kernel.org Fixes: e33a9bba85a8 ("sched/core: move IO scheduling accounting from io_schedule_timeout() into scheduler") Link: http://lkml.kernel.org/r/1513613712-571-1-git-send-email-joshs@netflix.com Signed-off-by: Ingo Molnar <mingo(a)kernel.org> --- include/linux/delayacct.h | 8 ++++---- kernel/delayacct.c | 42 ++++++++++++++++++++++++++---------------- kernel/sched/core.c | 6 +++--- 3 files changed, 33 insertions(+), 23 deletions(-) diff --git a/include/linux/delayacct.h b/include/linux/delayacct.h index 4178d24..5e335b6 100644 --- a/include/linux/delayacct.h +++ b/include/linux/delayacct.h @@ -71,7 +71,7 @@ extern void delayacct_init(void); extern void __delayacct_tsk_init(struct task_struct *); extern void __delayacct_tsk_exit(struct task_struct *); extern void __delayacct_blkio_start(void); -extern void __delayacct_blkio_end(void); +extern void __delayacct_blkio_end(struct task_struct *); extern int __delayacct_add_tsk(struct taskstats *, struct task_struct *); extern __u64 __delayacct_blkio_ticks(struct task_struct *); extern void __delayacct_freepages_start(void); @@ -122,10 +122,10 @@ static inline void delayacct_blkio_start(void) __delayacct_blkio_start(); } -static inline void delayacct_blkio_end(void) +static inline void delayacct_blkio_end(struct task_struct *p) { if (current->delays) - __delayacct_blkio_end(); + __delayacct_blkio_end(p); delayacct_clear_flag(DELAYACCT_PF_BLKIO); } @@ -169,7 +169,7 @@ static inline void delayacct_tsk_free(struct task_struct *tsk) {} static inline void delayacct_blkio_start(void) {} -static inline void delayacct_blkio_end(void) +static inline void delayacct_blkio_end(struct task_struct *p) {} static inline int delayacct_add_tsk(struct taskstats *d, struct task_struct *tsk) diff --git a/kernel/delayacct.c b/kernel/delayacct.c index 4a1c334..e2764d7 100644 --- a/kernel/delayacct.c +++ b/kernel/delayacct.c @@ -51,16 +51,16 @@ void __delayacct_tsk_init(struct task_struct *tsk) * Finish delay accounting for a statistic using its timestamps (@start), * accumalator (@total) and @count */ -static void delayacct_end(u64 *start, u64 *total, u32 *count) +static void delayacct_end(spinlock_t *lock, u64 *start, u64 *total, u32 *count) { s64 ns = ktime_get_ns() - *start; unsigned long flags; if (ns > 0) { - spin_lock_irqsave(&current->delays->lock, flags); + spin_lock_irqsave(lock, flags); *total += ns; (*count)++; - spin_unlock_irqrestore(&current->delays->lock, flags); + spin_unlock_irqrestore(lock, flags); } } @@ -69,17 +69,25 @@ void __delayacct_blkio_start(void) current->delays->blkio_start = ktime_get_ns(); } -void __delayacct_blkio_end(void) +/* + * We cannot rely on the `current` macro, as we haven't yet switched back to + * the process being woken. + */ +void __delayacct_blkio_end(struct task_struct *p) { - if (current->delays->flags & DELAYACCT_PF_SWAPIN) - /* Swapin block I/O */ - delayacct_end(&current->delays->blkio_start, - &current->delays->swapin_delay, - &current->delays->swapin_count); - else /* Other block I/O */ - delayacct_end(&current->delays->blkio_start, - &current->delays->blkio_delay, - &current->delays->blkio_count); + struct task_delay_info *delays = p->delays; + u64 *total; + u32 *count; + + if (p->delays->flags & DELAYACCT_PF_SWAPIN) { + total = &delays->swapin_delay; + count = &delays->swapin_count; + } else { + total = &delays->blkio_delay; + count = &delays->blkio_count; + } + + delayacct_end(&delays->lock, &delays->blkio_start, total, count); } int __delayacct_add_tsk(struct taskstats *d, struct task_struct *tsk) @@ -153,8 +161,10 @@ void __delayacct_freepages_start(void) void __delayacct_freepages_end(void) { - delayacct_end(&current->delays->freepages_start, - &current->delays->freepages_delay, - &current->delays->freepages_count); + delayacct_end( + &current->delays->lock, + &current->delays->freepages_start, + &current->delays->freepages_delay, + &current->delays->freepages_count); } diff --git a/kernel/sched/core.c b/kernel/sched/core.c index 644fa2e..a7bf32a 100644 --- a/kernel/sched/core.c +++ b/kernel/sched/core.c @@ -2056,7 +2056,7 @@ try_to_wake_up(struct task_struct *p, unsigned int state, int wake_flags) p->state = TASK_WAKING; if (p->in_iowait) { - delayacct_blkio_end(); + delayacct_blkio_end(p); atomic_dec(&task_rq(p)->nr_iowait); } @@ -2069,7 +2069,7 @@ try_to_wake_up(struct task_struct *p, unsigned int state, int wake_flags) #else /* CONFIG_SMP */ if (p->in_iowait) { - delayacct_blkio_end(); + delayacct_blkio_end(p); atomic_dec(&task_rq(p)->nr_iowait); } @@ -2122,7 +2122,7 @@ static void try_to_wake_up_local(struct task_struct *p, struct rq_flags *rf) if (!task_on_rq_queued(p)) { if (p->in_iowait) { - delayacct_blkio_end(); + delayacct_blkio_end(p); atomic_dec(&rq->nr_iowait); } ttwu_activate(rq, p, ENQUEUE_WAKEUP | ENQUEUE_NOCLOCK);

7 years, 9 months

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[Linux-stable-mirror] [PATCH v2] ARM: vfp: Go back to clearing vfp_current_hw_state[]

by Fabio Estevam

From: Fabio Estevam <fabio.estevam(a)nxp.com> Commit 384b38b66947 ("ARM: 7873/1: vfp: clear vfp_current_hw_state for dying cpu") fixed the cpu dying notifier by clearing vfp_current_hw_state[]. However commit e5b61bafe704 ("arm: Convert VFP hotplug notifiers to state machine") incorrectly used the original vfp_force_reload() function in the cpu dying notifier. Fix it by going back to clearing vfp_current_hw_state[]. Fixes: e5b61bafe704 ("arm: Convert VFP hotplug notifiers to state machine") Cc: linux-stable <stable(a)vger.kernel.org> Reported-by: Kohji Okuno <okuno.kohji(a)jp.panasonic.com> Signed-off-by: Fabio Estevam <fabio.estevam(a)nxp.com> --- Changes since v1: - Improve the commit message arch/arm/vfp/vfpmodule.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/arm/vfp/vfpmodule.c b/arch/arm/vfp/vfpmodule.c index a71a48e..aa7496b 100644 --- a/arch/arm/vfp/vfpmodule.c +++ b/arch/arm/vfp/vfpmodule.c @@ -648,7 +648,7 @@ int vfp_restore_user_hwstate(struct user_vfp __user *ufp, */ static int vfp_dying_cpu(unsigned int cpu) { - vfp_force_reload(cpu, current_thread_info()); + vfp_current_hw_state[cpu] = NULL; return 0; } -- 2.7.4

7 years, 9 months

1
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[Linux-stable-mirror] [PATCH 4.9 v2] x86/pti/efi: broken conversion from efi to kernel page table

by Pavel Tatashin

The page table order must be increased for EFI table in order to avoid a bug where NMI tries to change the page table to kernel page table, while efi page table is active. For more disccussion about this bug, see this thread: http://lkml.iu.edu/hypermail/linux/kernel/1801.1/00951.html Signed-off-by: Pavel Tatashin <pasha.tatashin(a)oracle.com> Reviewed-by: Steven Sistare <steven.sistare(a)oracle.com> Acked-by: Jiri Kosina <jkosina(a)suse.cz> --- arch/x86/include/asm/pgalloc.h | 11 +++++++++++ arch/x86/mm/pgtable.c | 7 ------- arch/x86/platform/efi/efi_64.c | 2 +- 3 files changed, 12 insertions(+), 8 deletions(-) Changelog: v1 - v2: Fixed compiling warning diff --git a/arch/x86/include/asm/pgalloc.h b/arch/x86/include/asm/pgalloc.h index b6d425999f99..1178a51b77f3 100644 --- a/arch/x86/include/asm/pgalloc.h +++ b/arch/x86/include/asm/pgalloc.h @@ -27,6 +27,17 @@ static inline void paravirt_release_pud(unsigned long pfn) {} */ extern gfp_t __userpte_alloc_gfp; +#ifdef CONFIG_PAGE_TABLE_ISOLATION +/* + * Instead of one PGD, we acquire two PGDs. Being order-1, it is + * both 8k in size and 8k-aligned. That lets us just flip bit 12 + * in a pointer to swap between the two 4k halves. + */ +#define PGD_ALLOCATION_ORDER 1 +#else +#define PGD_ALLOCATION_ORDER 0 +#endif + /* * Allocate and free page tables. */ diff --git a/arch/x86/mm/pgtable.c b/arch/x86/mm/pgtable.c index 5aaec8effc5f..209b9465e97a 100644 --- a/arch/x86/mm/pgtable.c +++ b/arch/x86/mm/pgtable.c @@ -345,13 +345,6 @@ static inline void _pgd_free(pgd_t *pgd) } #else -/* - * Instead of one pgd, Kaiser acquires two pgds. Being order-1, it is - * both 8k in size and 8k-aligned. That lets us just flip bit 12 - * in a pointer to swap between the two 4k halves. - */ -#define PGD_ALLOCATION_ORDER kaiser_enabled - static inline pgd_t *_pgd_alloc(void) { return (pgd_t *)__get_free_pages(PGALLOC_GFP, PGD_ALLOCATION_ORDER); diff --git a/arch/x86/platform/efi/efi_64.c b/arch/x86/platform/efi/efi_64.c index 2f25a363068c..dcb2d9d185a2 100644 --- a/arch/x86/platform/efi/efi_64.c +++ b/arch/x86/platform/efi/efi_64.c @@ -142,7 +142,7 @@ int __init efi_alloc_page_tables(void) return 0; gfp_mask = GFP_KERNEL | __GFP_NOTRACK | __GFP_ZERO; - efi_pgd = (pgd_t *)__get_free_page(gfp_mask); + efi_pgd = (pgd_t *)__get_free_pages(gfp_mask, PGD_ALLOCATION_ORDER); if (!efi_pgd) return -ENOMEM; -- 2.15.1

7 years, 9 months

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Re: [Linux-stable-mirror] Patch "objtool: Allow alternatives to be ignored" has been added to the 4.9-stable tree

by Josh Poimboeuf

On Mon, Jan 15, 2018 at 12:55:11PM +0100, David Woodhouse wrote: > On Mon, 2018-01-15 at 10:06 +0100, gregkh(a)linuxfoundation.org wrote: > > This is a note to let you know that I've just added the patch titled > > > > objtool: Allow alternatives to be ignored > > > > to the 4.9-stable tree which can be found at: > > http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=sum… > > > > The filename of the patch is: > > objtool-allow-alternatives-to-be-ignored.patch > > and it can be found in the queue-4.9 subdirectory. > > Hm... they aren't being ignored entirely. > > arch/x86/crypto/camellia-aesni-avx2-asm_64.o: warning: objtool: .altinstr_replacement+0xf: return instruction outside of a callable function > > Josh? This should fix it (to be applied on top): ---- From: Josh Poimboeuf <jpoimboe(a)redhat.com> Subject: [PATCH] objtool: Fix retpoline support for pre-ORC objtool Objtool 1.0 (pre-ORC) produces the following warning when it encounters a retpoline: arch/x86/crypto/camellia-aesni-avx2-asm_64.o: warning: objtool: .altinstr_replacement+0xf: return instruction outside of a callable function That warning is meant to catch GCC bugs and missing ENTRY/ENDPROC annotations, neither of which are applicable to alternatives. Silence the warning for alternative instructions, just like objtool 2.0 already does. Reported-by: David Woodhouse <dwmw2(a)infradead.org> Signed-off-by: Josh Poimboeuf <jpoimboe(a)redhat.com> --- tools/objtool/builtin-check.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/tools/objtool/builtin-check.c b/tools/objtool/builtin-check.c index f789621cbdba..a688a857a7ae 100644 --- a/tools/objtool/builtin-check.c +++ b/tools/objtool/builtin-check.c @@ -1230,6 +1230,14 @@ static int validate_uncallable_instructions(struct objtool_file *file) for_each_insn(file, insn) { if (!insn->visited && insn->type == INSN_RETURN) { + + /* + * Don't warn about call instructions in unvisited + * retpoline alternatives. + */ + if (!strcmp(insn->sec->name, ".altinstr_replacement")) + continue; + WARN_FUNC("return instruction outside of a callable function", insn->sec, insn->offset); warnings++; -- 2.14.3

7 years, 9 months

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Re: [Linux-stable-mirror] stable-rc/linux-4.4.y build: 178 builds: 1 failed, 177 passed, 4 errors (v4.4.111-88-gaee64ffb2ece)

by Amit Pundir

Hi Greg, On 15 January 2018 at 17:21, kernelci.org bot <bot(a)kernelci.org> wrote: > stable-rc/linux-4.4.y build: 178 builds: 1 failed, 177 passed, 4 errors (v4.4.111-88-gaee64ffb2ece) > > Full Build Summary: https://kernelci.org/build/stable-rc/branch/linux-4.4.y/kernel/v4.4.111-88-… > > Tree: stable-rc > Branch: linux-4.4.y > Git Describe: v4.4.111-88-gaee64ffb2ece > Git Commit: aee64ffb2ececdfe86f0a00fb46f28aaad5f3acd > Git URL: http://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git > Built: 4 unique architectures > > Build Failure Detected: > > x86: gcc version 5.4.0 20160609 (Ubuntu 5.4.0-6ubuntu1~16.04.5) > > i386_defconfig: FAIL > > Errors Detected: > > x86: gcc version 5.4.0 20160609 (Ubuntu 5.4.0-6ubuntu1~16.04.5) > > i386_defconfig: 4 errors > > Errors summary: > > 1 arch/x86/kernel/cpu/bugs.c:76:24: error: 'X86_BUG_SPECTRE_V2' undeclared (first use in this function) > 1 arch/x86/kernel/cpu/bugs.c:68:24: error: 'X86_BUG_SPECTRE_V1' undeclared (first use in this function) > 1 arch/x86/kernel/cpu/bugs.c:60:19: error: 'X86_FEATURE_PTI' undeclared (first use in this function) > 1 arch/x86/kernel/cpu/bugs.c:58:24: error: 'X86_BUG_CPU_MELTDOWN' undeclared (first use in this function) > > Build failed due to following missing upstream patch backports for linux-4.4.y. I don't see these patches in queue-4.4 either. I'm not aware of other dependencies of these patches: a89f040fa34e ("x86/cpufeatures: Add X86_BUG_CPU_INSECURE") de791821c295c ("x86/pti: Rename BUG_CPU_INSECURE to BUG_CPU_MELTDOWN") 99c6fa2511d8 ("x86/cpufeatures: Add X86_BUG_SPECTRE_V[12]") Regards, Amit Pundir <snip> ..

7 years, 9 months

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[Linux-stable-mirror] Patch "x86/pti: Rename BUG_CPU_INSECURE to BUG_CPU_MELTDOWN" has been added to the 4.4-stable tree

by gregkh＠linuxfoundation.org

This is a note to let you know that I've just added the patch titled x86/pti: Rename BUG_CPU_INSECURE to BUG_CPU_MELTDOWN to the 4.4-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=sum… The filename of the patch is: x86-pti-rename-bug_cpu_insecure-to-bug_cpu_meltdown.patch and it can be found in the queue-4.4 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable(a)vger.kernel.org> know about it. >From de791821c295cc61419a06fe5562288417d1bc58 Mon Sep 17 00:00:00 2001 From: Thomas Gleixner <tglx(a)linutronix.de> Date: Fri, 5 Jan 2018 15:27:34 +0100 Subject: x86/pti: Rename BUG_CPU_INSECURE to BUG_CPU_MELTDOWN From: Thomas Gleixner <tglx(a)linutronix.de> commit de791821c295cc61419a06fe5562288417d1bc58 upstream. Use the name associated with the particular attack which needs page table isolation for mitigation. Signed-off-by: Thomas Gleixner <tglx(a)linutronix.de> Acked-by: David Woodhouse <dwmw(a)amazon.co.uk> Cc: Alan Cox <gnomes(a)lxorguk.ukuu.org.uk> Cc: Jiri Koshina <jikos(a)kernel.org> Cc: Linus Torvalds <torvalds(a)linux-foundation.org> Cc: Tim Chen <tim.c.chen(a)linux.intel.com> Cc: Andi Lutomirski <luto(a)amacapital.net> Cc: Andi Kleen <ak(a)linux.intel.com> Cc: Peter Zijlstra <peterz(a)infradead.org> Cc: Paul Turner <pjt(a)google.com> Cc: Tom Lendacky <thomas.lendacky(a)amd.com> Cc: Greg KH <gregkh(a)linux-foundation.org> Cc: Dave Hansen <dave.hansen(a)intel.com> Cc: Kees Cook <keescook(a)google.com> Cc: stable(a)vger.kernel.org Link: https://lkml.kernel.org/r/alpine.DEB.2.20.1801051525300.1724@nanos Signed-off-by: Razvan Ghitulete <rga(a)amazon.de> Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> --- arch/x86/include/asm/cpufeature.h | 2 +- arch/x86/kernel/cpu/common.c | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-) --- a/arch/x86/include/asm/cpufeature.h +++ b/arch/x86/include/asm/cpufeature.h @@ -277,7 +277,7 @@ #define X86_BUG_FXSAVE_LEAK X86_BUG(6) /* FXSAVE leaks FOP/FIP/FOP */ #define X86_BUG_CLFLUSH_MONITOR X86_BUG(7) /* AAI65, CLFLUSH required before MONITOR */ #define X86_BUG_SYSRET_SS_ATTRS X86_BUG(8) /* SYSRET doesn't fix up SS attrs */ -#define X86_BUG_CPU_INSECURE X86_BUG(14) /* CPU is insecure and needs kernel page table isolation */ +#define X86_BUG_CPU_MELTDOWN X86_BUG(14) /* CPU is affected by meltdown attack and needs kernel page table isolation */ #if defined(__KERNEL__) && !defined(__ASSEMBLY__) --- a/arch/x86/kernel/cpu/common.c +++ b/arch/x86/kernel/cpu/common.c @@ -832,7 +832,7 @@ static void __init early_identify_cpu(st setup_force_cpu_cap(X86_FEATURE_ALWAYS); /* Assume for now that ALL x86 CPUs are insecure */ - setup_force_cpu_bug(X86_BUG_CPU_INSECURE); + setup_force_cpu_bug(X86_BUG_CPU_MELTDOWN); fpu__init_system(c); } Patches currently in stable-queue which might be from tglx(a)linutronix.de are queue-4.4/x86-mm-pat-dev-mem-remove-superfluous-error-message.patch queue-4.4/x86-cpufeatures-add-x86_bug_spectre_v.patch queue-4.4/x86-microcode-intel-extend-bdw-late-loading-with-a-revision-check.patch queue-4.4/x86-alternatives-add-missing-n-at-end-of-alternative-inline-asm.patch queue-4.4/sysfs-cpu-fix-typos-in-vulnerability-documentation.patch queue-4.4/locking-mutex-allow-next-waiter-lockless-wakeup.patch queue-4.4/x86-cpufeatures-add-x86_bug_cpu_insecure.patch queue-4.4/x86-cpufeatures-make-cpu-bugs-sticky.patch queue-4.4/x86-vsdo-fix-build-on-paravirt_clock-y-kvm_guest-n.patch queue-4.4/x86-pti-efi-broken-conversion-from-efi-to-kernel-page-table.patch queue-4.4/x86-documentation-add-pti-description.patch queue-4.4/x86-acpi-handle-sci-interrupts-above-legacy-space-gracefully.patch queue-4.4/x86-cpu-implement-cpu-vulnerabilites-sysfs-functions.patch queue-4.4/futex-replace-barrier-in-unqueue_me-with-read_once.patch queue-4.4/x86-cpu-factor-out-application-of-forced-cpu-caps.patch queue-4.4/selftests-x86-add-test_vsyscall.patch queue-4.4/x86-cpu-merge-bugs.c-and-bugs_64.c.patch queue-4.4/sysfs-cpu-add-vulnerability-folder.patch queue-4.4/x86-pti-rename-bug_cpu_insecure-to-bug_cpu_meltdown.patch queue-4.4/x86-acpi-reduce-code-duplication-in-mp_override_legacy_irq.patch queue-4.4/x86-alternatives-fix-optimize_nops-checking.patch

7 years, 9 months

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[Linux-stable-mirror] Patch "x86/cpufeatures: Make CPU bugs sticky" has been added to the 4.4-stable tree

by gregkh＠linuxfoundation.org

This is a note to let you know that I've just added the patch titled x86/cpufeatures: Make CPU bugs sticky to the 4.4-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=sum… The filename of the patch is: x86-cpufeatures-make-cpu-bugs-sticky.patch and it can be found in the queue-4.4 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable(a)vger.kernel.org> know about it. >From 6cbd2171e89b13377261d15e64384df60ecb530e Mon Sep 17 00:00:00 2001 From: Thomas Gleixner <tglx(a)linutronix.de> Date: Mon, 4 Dec 2017 15:07:32 +0100 Subject: x86/cpufeatures: Make CPU bugs sticky From: Thomas Gleixner <tglx(a)linutronix.de> commit 6cbd2171e89b13377261d15e64384df60ecb530e upstream. There is currently no way to force CPU bug bits like CPU feature bits. That makes it impossible to set a bug bit once at boot and have it stick for all upcoming CPUs. Extend the force set/clear arrays to handle bug bits as well. Signed-off-by: Thomas Gleixner <tglx(a)linutronix.de> Reviewed-by: Borislav Petkov <bp(a)suse.de> Cc: Andy Lutomirski <luto(a)kernel.org> Cc: Boris Ostrovsky <boris.ostrovsky(a)oracle.com> Cc: Borislav Petkov <bp(a)alien8.de> Cc: Borislav Petkov <bpetkov(a)suse.de> Cc: Brian Gerst <brgerst(a)gmail.com> Cc: Dave Hansen <dave.hansen(a)intel.com> Cc: Dave Hansen <dave.hansen(a)linux.intel.com> Cc: David Laight <David.Laight(a)aculab.com> Cc: Denys Vlasenko <dvlasenk(a)redhat.com> Cc: Eduardo Valentin <eduval(a)amazon.com> Cc: Greg KH <gregkh(a)linuxfoundation.org> Cc: H. Peter Anvin <hpa(a)zytor.com> Cc: Josh Poimboeuf <jpoimboe(a)redhat.com> Cc: Juergen Gross <jgross(a)suse.com> Cc: Linus Torvalds <torvalds(a)linux-foundation.org> Cc: Peter Zijlstra <peterz(a)infradead.org> Cc: Rik van Riel <riel(a)redhat.com> Cc: Will Deacon <will.deacon(a)arm.com> Cc: aliguori(a)amazon.com Cc: daniel.gruss(a)iaik.tugraz.at Cc: hughd(a)google.com Cc: keescook(a)google.com Link: https://lkml.kernel.org/r/20171204150606.992156574@linutronix.de Signed-off-by: Ingo Molnar <mingo(a)kernel.org> Signed-off-by: David Woodhouse <dwmw(a)amazon.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> --- arch/x86/include/asm/cpufeature.h | 2 ++ arch/x86/include/asm/processor.h | 4 ++-- arch/x86/kernel/cpu/common.c | 6 +++--- 3 files changed, 7 insertions(+), 5 deletions(-) --- a/arch/x86/include/asm/cpufeature.h +++ b/arch/x86/include/asm/cpufeature.h @@ -359,6 +359,8 @@ extern const char * const x86_bug_flags[ set_bit(bit, (unsigned long *)cpu_caps_set); \ } while (0) +#define setup_force_cpu_bug(bit) setup_force_cpu_cap(bit) + #define cpu_has_fpu boot_cpu_has(X86_FEATURE_FPU) #define cpu_has_de boot_cpu_has(X86_FEATURE_DE) #define cpu_has_pse boot_cpu_has(X86_FEATURE_PSE) --- a/arch/x86/include/asm/processor.h +++ b/arch/x86/include/asm/processor.h @@ -156,8 +156,8 @@ extern struct cpuinfo_x86 boot_cpu_data; extern struct cpuinfo_x86 new_cpu_data; extern struct tss_struct doublefault_tss; -extern __u32 cpu_caps_cleared[NCAPINTS]; -extern __u32 cpu_caps_set[NCAPINTS]; +extern __u32 cpu_caps_cleared[NCAPINTS + NBUGINTS]; +extern __u32 cpu_caps_set[NCAPINTS + NBUGINTS]; #ifdef CONFIG_SMP DECLARE_PER_CPU_READ_MOSTLY(struct cpuinfo_x86, cpu_info); --- a/arch/x86/kernel/cpu/common.c +++ b/arch/x86/kernel/cpu/common.c @@ -432,8 +432,8 @@ static const char *table_lookup_model(st return NULL; /* Not found */ } -__u32 cpu_caps_cleared[NCAPINTS]; -__u32 cpu_caps_set[NCAPINTS]; +__u32 cpu_caps_cleared[NCAPINTS + NBUGINTS]; +__u32 cpu_caps_set[NCAPINTS + NBUGINTS]; void load_percpu_segment(int cpu) { @@ -668,7 +668,7 @@ static void apply_forced_caps(struct cpu { int i; - for (i = 0; i < NCAPINTS; i++) { + for (i = 0; i < NCAPINTS + NBUGINTS; i++) { c->x86_capability[i] &= ~cpu_caps_cleared[i]; c->x86_capability[i] |= cpu_caps_set[i]; } Patches currently in stable-queue which might be from tglx(a)linutronix.de are queue-4.4/x86-mm-pat-dev-mem-remove-superfluous-error-message.patch queue-4.4/x86-cpufeatures-add-x86_bug_spectre_v.patch queue-4.4/x86-microcode-intel-extend-bdw-late-loading-with-a-revision-check.patch queue-4.4/x86-alternatives-add-missing-n-at-end-of-alternative-inline-asm.patch queue-4.4/sysfs-cpu-fix-typos-in-vulnerability-documentation.patch queue-4.4/locking-mutex-allow-next-waiter-lockless-wakeup.patch queue-4.4/x86-cpufeatures-add-x86_bug_cpu_insecure.patch queue-4.4/x86-cpufeatures-make-cpu-bugs-sticky.patch queue-4.4/x86-vsdo-fix-build-on-paravirt_clock-y-kvm_guest-n.patch queue-4.4/x86-pti-efi-broken-conversion-from-efi-to-kernel-page-table.patch queue-4.4/x86-documentation-add-pti-description.patch queue-4.4/x86-acpi-handle-sci-interrupts-above-legacy-space-gracefully.patch queue-4.4/x86-cpu-implement-cpu-vulnerabilites-sysfs-functions.patch queue-4.4/futex-replace-barrier-in-unqueue_me-with-read_once.patch queue-4.4/x86-cpu-factor-out-application-of-forced-cpu-caps.patch queue-4.4/selftests-x86-add-test_vsyscall.patch queue-4.4/x86-cpu-merge-bugs.c-and-bugs_64.c.patch queue-4.4/sysfs-cpu-add-vulnerability-folder.patch queue-4.4/x86-pti-rename-bug_cpu_insecure-to-bug_cpu_meltdown.patch queue-4.4/x86-acpi-reduce-code-duplication-in-mp_override_legacy_irq.patch queue-4.4/x86-alternatives-fix-optimize_nops-checking.patch

7 years, 9 months

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[Linux-stable-mirror] Patch "x86/cpufeatures: Add X86_BUG_SPECTRE_V[12]" has been added to the 4.4-stable tree

by gregkh＠linuxfoundation.org

This is a note to let you know that I've just added the patch titled x86/cpufeatures: Add X86_BUG_SPECTRE_V[12] to the 4.4-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=sum… The filename of the patch is: x86-cpufeatures-add-x86_bug_spectre_v.patch and it can be found in the queue-4.4 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable(a)vger.kernel.org> know about it. >From 99c6fa2511d8a683e61468be91b83f85452115fa Mon Sep 17 00:00:00 2001 From: David Woodhouse <dwmw(a)amazon.co.uk> Date: Sat, 6 Jan 2018 11:49:23 +0000 Subject: x86/cpufeatures: Add X86_BUG_SPECTRE_V[12] From: David Woodhouse <dwmw(a)amazon.co.uk> commit 99c6fa2511d8a683e61468be91b83f85452115fa upstream. Add the bug bits for spectre v1/2 and force them unconditionally for all cpus. Signed-off-by: David Woodhouse <dwmw(a)amazon.co.uk> Signed-off-by: Thomas Gleixner <tglx(a)linutronix.de> Cc: gnomes(a)lxorguk.ukuu.org.uk Cc: Rik van Riel <riel(a)redhat.com> Cc: Andi Kleen <ak(a)linux.intel.com> Cc: Peter Zijlstra <peterz(a)infradead.org> Cc: Linus Torvalds <torvalds(a)linux-foundation.org> Cc: Jiri Kosina <jikos(a)kernel.org> Cc: Andy Lutomirski <luto(a)amacapital.net> Cc: Dave Hansen <dave.hansen(a)intel.com> Cc: Kees Cook <keescook(a)google.com> Cc: Tim Chen <tim.c.chen(a)linux.intel.com> Cc: Greg Kroah-Hartman <gregkh(a)linux-foundation.org> Cc: Paul Turner <pjt(a)google.com> Cc: stable(a)vger.kernel.org Link: https://lkml.kernel.org/r/1515239374-23361-2-git-send-email-dwmw@amazon.co.… Signed-off-by: Razvan Ghitulete <rga(a)amazon.de> Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> --- arch/x86/include/asm/cpufeature.h | 2 ++ arch/x86/kernel/cpu/common.c | 3 +++ 2 files changed, 5 insertions(+) --- a/arch/x86/include/asm/cpufeature.h +++ b/arch/x86/include/asm/cpufeature.h @@ -278,6 +278,8 @@ #define X86_BUG_CLFLUSH_MONITOR X86_BUG(7) /* AAI65, CLFLUSH required before MONITOR */ #define X86_BUG_SYSRET_SS_ATTRS X86_BUG(8) /* SYSRET doesn't fix up SS attrs */ #define X86_BUG_CPU_MELTDOWN X86_BUG(14) /* CPU is affected by meltdown attack and needs kernel page table isolation */ +#define X86_BUG_SPECTRE_V1 X86_BUG(15) /* CPU is affected by Spectre variant 1 attack with conditional branches */ +#define X86_BUG_SPECTRE_V2 X86_BUG(16) /* CPU is affected by Spectre variant 2 attack with indirect branches */ #if defined(__KERNEL__) && !defined(__ASSEMBLY__) --- a/arch/x86/kernel/cpu/common.c +++ b/arch/x86/kernel/cpu/common.c @@ -834,6 +834,9 @@ static void __init early_identify_cpu(st /* Assume for now that ALL x86 CPUs are insecure */ setup_force_cpu_bug(X86_BUG_CPU_MELTDOWN); + setup_force_cpu_bug(X86_BUG_SPECTRE_V1); + setup_force_cpu_bug(X86_BUG_SPECTRE_V2); + fpu__init_system(c); } Patches currently in stable-queue which might be from dwmw(a)amazon.co.uk are queue-4.4/x86-cpufeatures-add-x86_bug_spectre_v.patch queue-4.4/x86-alternatives-add-missing-n-at-end-of-alternative-inline-asm.patch queue-4.4/sysfs-cpu-fix-typos-in-vulnerability-documentation.patch queue-4.4/x86-cpufeatures-add-x86_bug_cpu_insecure.patch queue-4.4/x86-cpufeatures-make-cpu-bugs-sticky.patch queue-4.4/x86-cpu-implement-cpu-vulnerabilites-sysfs-functions.patch queue-4.4/x86-cpu-factor-out-application-of-forced-cpu-caps.patch queue-4.4/sysfs-cpu-add-vulnerability-folder.patch queue-4.4/x86-pti-rename-bug_cpu_insecure-to-bug_cpu_meltdown.patch queue-4.4/x86-alternatives-fix-optimize_nops-checking.patch

7 years, 9 months

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[Linux-stable-mirror] Patch "x86/cpufeatures: Add X86_BUG_CPU_INSECURE" has been added to the 4.4-stable tree

by gregkh＠linuxfoundation.org

This is a note to let you know that I've just added the patch titled x86/cpufeatures: Add X86_BUG_CPU_INSECURE to the 4.4-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=sum… The filename of the patch is: x86-cpufeatures-add-x86_bug_cpu_insecure.patch and it can be found in the queue-4.4 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable(a)vger.kernel.org> know about it. >From a89f040fa34ec9cd682aed98b8f04e3c47d998bd Mon Sep 17 00:00:00 2001 From: Thomas Gleixner <tglx(a)linutronix.de> Date: Mon, 4 Dec 2017 15:07:33 +0100 Subject: x86/cpufeatures: Add X86_BUG_CPU_INSECURE From: Thomas Gleixner <tglx(a)linutronix.de> commit a89f040fa34ec9cd682aed98b8f04e3c47d998bd upstream. Many x86 CPUs leak information to user space due to missing isolation of user space and kernel space page tables. There are many well documented ways to exploit that. The upcoming software migitation of isolating the user and kernel space page tables needs a misfeature flag so code can be made runtime conditional. Add the BUG bits which indicates that the CPU is affected and add a feature bit which indicates that the software migitation is enabled. Assume for now that _ALL_ x86 CPUs are affected by this. Exceptions can be made later. Signed-off-by: Thomas Gleixner <tglx(a)linutronix.de> Cc: Andy Lutomirski <luto(a)kernel.org> Cc: Boris Ostrovsky <boris.ostrovsky(a)oracle.com> Cc: Borislav Petkov <bp(a)alien8.de> Cc: Brian Gerst <brgerst(a)gmail.com> Cc: Dave Hansen <dave.hansen(a)linux.intel.com> Cc: David Laight <David.Laight(a)aculab.com> Cc: Denys Vlasenko <dvlasenk(a)redhat.com> Cc: Eduardo Valentin <eduval(a)amazon.com> Cc: Greg KH <gregkh(a)linuxfoundation.org> Cc: H. Peter Anvin <hpa(a)zytor.com> Cc: Josh Poimboeuf <jpoimboe(a)redhat.com> Cc: Juergen Gross <jgross(a)suse.com> Cc: Linus Torvalds <torvalds(a)linux-foundation.org> Cc: Peter Zijlstra <peterz(a)infradead.org> Cc: Will Deacon <will.deacon(a)arm.com> Cc: aliguori(a)amazon.com Cc: daniel.gruss(a)iaik.tugraz.at Cc: hughd(a)google.com Cc: keescook(a)google.com Signed-off-by: Ingo Molnar <mingo(a)kernel.org> Signed-off-by: David Woodhouse <dwmw(a)amazon.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> --- arch/x86/include/asm/cpufeature.h | 1 + arch/x86/kernel/cpu/common.c | 4 ++++ 2 files changed, 5 insertions(+) --- a/arch/x86/include/asm/cpufeature.h +++ b/arch/x86/include/asm/cpufeature.h @@ -277,6 +277,7 @@ #define X86_BUG_FXSAVE_LEAK X86_BUG(6) /* FXSAVE leaks FOP/FIP/FOP */ #define X86_BUG_CLFLUSH_MONITOR X86_BUG(7) /* AAI65, CLFLUSH required before MONITOR */ #define X86_BUG_SYSRET_SS_ATTRS X86_BUG(8) /* SYSRET doesn't fix up SS attrs */ +#define X86_BUG_CPU_INSECURE X86_BUG(14) /* CPU is insecure and needs kernel page table isolation */ #if defined(__KERNEL__) && !defined(__ASSEMBLY__) --- a/arch/x86/kernel/cpu/common.c +++ b/arch/x86/kernel/cpu/common.c @@ -830,6 +830,10 @@ static void __init early_identify_cpu(st } setup_force_cpu_cap(X86_FEATURE_ALWAYS); + + /* Assume for now that ALL x86 CPUs are insecure */ + setup_force_cpu_bug(X86_BUG_CPU_INSECURE); + fpu__init_system(c); } Patches currently in stable-queue which might be from tglx(a)linutronix.de are queue-4.4/x86-mm-pat-dev-mem-remove-superfluous-error-message.patch queue-4.4/x86-cpufeatures-add-x86_bug_spectre_v.patch queue-4.4/x86-microcode-intel-extend-bdw-late-loading-with-a-revision-check.patch queue-4.4/x86-alternatives-add-missing-n-at-end-of-alternative-inline-asm.patch queue-4.4/sysfs-cpu-fix-typos-in-vulnerability-documentation.patch queue-4.4/locking-mutex-allow-next-waiter-lockless-wakeup.patch queue-4.4/x86-cpufeatures-add-x86_bug_cpu_insecure.patch queue-4.4/x86-cpufeatures-make-cpu-bugs-sticky.patch queue-4.4/x86-vsdo-fix-build-on-paravirt_clock-y-kvm_guest-n.patch queue-4.4/x86-pti-efi-broken-conversion-from-efi-to-kernel-page-table.patch queue-4.4/x86-documentation-add-pti-description.patch queue-4.4/x86-acpi-handle-sci-interrupts-above-legacy-space-gracefully.patch queue-4.4/x86-cpu-implement-cpu-vulnerabilites-sysfs-functions.patch queue-4.4/futex-replace-barrier-in-unqueue_me-with-read_once.patch queue-4.4/x86-cpu-factor-out-application-of-forced-cpu-caps.patch queue-4.4/selftests-x86-add-test_vsyscall.patch queue-4.4/x86-cpu-merge-bugs.c-and-bugs_64.c.patch queue-4.4/sysfs-cpu-add-vulnerability-folder.patch queue-4.4/x86-pti-rename-bug_cpu_insecure-to-bug_cpu_meltdown.patch queue-4.4/x86-acpi-reduce-code-duplication-in-mp_override_legacy_irq.patch queue-4.4/x86-alternatives-fix-optimize_nops-checking.patch

7 years, 9 months

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[Linux-stable-mirror] Patch "x86/cpu: Merge bugs.c and bugs_64.c" has been added to the 4.4-stable tree

by gregkh＠linuxfoundation.org

This is a note to let you know that I've just added the patch titled x86/cpu: Merge bugs.c and bugs_64.c to the 4.4-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=sum… The filename of the patch is: x86-cpu-merge-bugs.c-and-bugs_64.c.patch and it can be found in the queue-4.4 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable(a)vger.kernel.org> know about it. >From 62a67e123e058a67db58bc6a14354dd037bafd0a Mon Sep 17 00:00:00 2001 From: Borislav Petkov <bp(a)suse.de> Date: Mon, 24 Oct 2016 19:38:43 +0200 Subject: x86/cpu: Merge bugs.c and bugs_64.c From: Borislav Petkov <bp(a)suse.de> commit 62a67e123e058a67db58bc6a14354dd037bafd0a upstream. Should be easier when following boot paths. It probably is a left over from the x86 unification eons ago. No functionality change. Signed-off-by: Borislav Petkov <bp(a)suse.de> Cc: Andy Lutomirski <luto(a)kernel.org> Cc: Borislav Petkov <bp(a)alien8.de> Cc: Brian Gerst <brgerst(a)gmail.com> Cc: Denys Vlasenko <dvlasenk(a)redhat.com> Cc: H. Peter Anvin <hpa(a)zytor.com> Cc: Josh Poimboeuf <jpoimboe(a)redhat.com> Cc: Linus Torvalds <torvalds(a)linux-foundation.org> Cc: Peter Zijlstra <peterz(a)infradead.org> Cc: Thomas Gleixner <tglx(a)linutronix.de> Link: http://lkml.kernel.org/r/20161024173844.23038-3-bp@alien8.de Signed-off-by: Ingo Molnar <mingo(a)kernel.org> Signed-off-by: Razvan Ghitulete <rga(a)amazon.de> Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> --- arch/x86/kernel/cpu/Makefile | 4 +--- arch/x86/kernel/cpu/bugs.c | 26 ++++++++++++++++++++++---- arch/x86/kernel/cpu/bugs_64.c | 33 --------------------------------- 3 files changed, 23 insertions(+), 40 deletions(-) delete mode 100644 arch/x86/kernel/cpu/bugs_64.c --- a/arch/x86/kernel/cpu/Makefile +++ b/arch/x86/kernel/cpu/Makefile @@ -16,13 +16,11 @@ obj-y := intel_cacheinfo.o scattered.o obj-y += common.o obj-y += rdrand.o obj-y += match.o +obj-y += bugs.o obj-$(CONFIG_PROC_FS) += proc.o obj-$(CONFIG_X86_FEATURE_NAMES) += capflags.o powerflags.o -obj-$(CONFIG_X86_32) += bugs.o -obj-$(CONFIG_X86_64) += bugs_64.o - obj-$(CONFIG_CPU_SUP_INTEL) += intel.o obj-$(CONFIG_CPU_SUP_AMD) += amd.o obj-$(CONFIG_CPU_SUP_CYRIX_32) += cyrix.o --- a/arch/x86/kernel/cpu/bugs.c +++ b/arch/x86/kernel/cpu/bugs.c @@ -16,6 +16,8 @@ #include <asm/msr.h> #include <asm/paravirt.h> #include <asm/alternative.h> +#include <asm/pgtable.h> +#include <asm/cacheflush.h> void __init check_bugs(void) { @@ -28,11 +30,13 @@ void __init check_bugs(void) #endif identify_boot_cpu(); -#ifndef CONFIG_SMP - pr_info("CPU: "); - print_cpu_info(&boot_cpu_data); -#endif + if (!IS_ENABLED(CONFIG_SMP)) { + pr_info("CPU: "); + print_cpu_info(&boot_cpu_data); + } + +#ifdef CONFIG_X86_32 /* * Check whether we are able to run this kernel safely on SMP. * @@ -48,4 +52,18 @@ void __init check_bugs(void) alternative_instructions(); fpu__init_check_bugs(); +#else /* CONFIG_X86_64 */ + alternative_instructions(); + + /* + * Make sure the first 2MB area is not mapped by huge pages + * There are typically fixed size MTRRs in there and overlapping + * MTRRs into large pages causes slow downs. + * + * Right now we don't do that with gbpages because there seems + * very little benefit for that case. + */ + if (!direct_gbpages) + set_memory_4k((unsigned long)__va(0), 1); +#endif } --- a/arch/x86/kernel/cpu/bugs_64.c +++ /dev/null @@ -1,33 +0,0 @@ -/* - * Copyright (C) 1994 Linus Torvalds - * Copyright (C) 2000 SuSE - */ - -#include <linux/kernel.h> -#include <linux/init.h> -#include <asm/alternative.h> -#include <asm/bugs.h> -#include <asm/processor.h> -#include <asm/mtrr.h> -#include <asm/cacheflush.h> - -void __init check_bugs(void) -{ - identify_boot_cpu(); -#if !defined(CONFIG_SMP) - printk(KERN_INFO "CPU: "); - print_cpu_info(&boot_cpu_data); -#endif - alternative_instructions(); - - /* - * Make sure the first 2MB area is not mapped by huge pages - * There are typically fixed size MTRRs in there and overlapping - * MTRRs into large pages causes slow downs. - * - * Right now we don't do that with gbpages because there seems - * very little benefit for that case. - */ - if (!direct_gbpages) - set_memory_4k((unsigned long)__va(0), 1); -} Patches currently in stable-queue which might be from bp(a)suse.de are queue-4.4/x86-microcode-intel-extend-bdw-late-loading-with-a-revision-check.patch queue-4.4/x86-cpufeatures-make-cpu-bugs-sticky.patch queue-4.4/x86-cpu-factor-out-application-of-forced-cpu-caps.patch queue-4.4/x86-cpu-merge-bugs.c-and-bugs_64.c.patch queue-4.4/x86-alternatives-fix-optimize_nops-checking.patch

7 years, 9 months

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[Linux-stable-mirror] Patch "x86/cpu: Factor out application of forced CPU caps" has been added to the 4.4-stable tree

by gregkh＠linuxfoundation.org

This is a note to let you know that I've just added the patch titled x86/cpu: Factor out application of forced CPU caps to the 4.4-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=sum… The filename of the patch is: x86-cpu-factor-out-application-of-forced-cpu-caps.patch and it can be found in the queue-4.4 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable(a)vger.kernel.org> know about it. >From 8bf1ebca215c262e48c15a4a15f175991776f57f Mon Sep 17 00:00:00 2001 From: Andy Lutomirski <luto(a)kernel.org> Date: Wed, 18 Jan 2017 11:15:38 -0800 Subject: x86/cpu: Factor out application of forced CPU caps From: Andy Lutomirski <luto(a)kernel.org> commit 8bf1ebca215c262e48c15a4a15f175991776f57f upstream. There are multiple call sites that apply forced CPU caps. Factor them into a helper. Signed-off-by: Andy Lutomirski <luto(a)kernel.org> Reviewed-by: Borislav Petkov <bp(a)suse.de> Cc: Borislav Petkov <bp(a)alien8.de> Cc: Brian Gerst <brgerst(a)gmail.com> Cc: Dave Hansen <dave.hansen(a)linux.intel.com> Cc: Fenghua Yu <fenghua.yu(a)intel.com> Cc: H. Peter Anvin <hpa(a)zytor.com> Cc: Linus Torvalds <torvalds(a)linux-foundation.org> Cc: Matthew Whitehead <tedheadster(a)gmail.com> Cc: Oleg Nesterov <oleg(a)redhat.com> Cc: One Thousand Gnomes <gnomes(a)lxorguk.ukuu.org.uk> Cc: Peter Zijlstra <peterz(a)infradead.org> Cc: Rik van Riel <riel(a)redhat.com> Cc: Thomas Gleixner <tglx(a)linutronix.de> Cc: Yu-cheng Yu <yu-cheng.yu(a)intel.com> Link: http://lkml.kernel.org/r/623ff7555488122143e4417de09b18be2085ad06.148470501… Signed-off-by: Ingo Molnar <mingo(a)kernel.org> Signed-off-by: David Woodhouse <dwmw(a)amazon.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> --- arch/x86/kernel/cpu/common.c | 22 +++++++++++++--------- 1 file changed, 13 insertions(+), 9 deletions(-) --- a/arch/x86/kernel/cpu/common.c +++ b/arch/x86/kernel/cpu/common.c @@ -664,6 +664,16 @@ void cpu_detect(struct cpuinfo_x86 *c) } } +static void apply_forced_caps(struct cpuinfo_x86 *c) +{ + int i; + + for (i = 0; i < NCAPINTS; i++) { + c->x86_capability[i] &= ~cpu_caps_cleared[i]; + c->x86_capability[i] |= cpu_caps_set[i]; + } +} + void get_cpu_cap(struct cpuinfo_x86 *c) { u32 tfms, xlvl; @@ -955,11 +965,8 @@ static void identify_cpu(struct cpuinfo_ if (this_cpu->c_identify) this_cpu->c_identify(c); - /* Clear/Set all flags overriden by options, after probe */ - for (i = 0; i < NCAPINTS; i++) { - c->x86_capability[i] &= ~cpu_caps_cleared[i]; - c->x86_capability[i] |= cpu_caps_set[i]; - } + /* Clear/Set all flags overridden by options, after probe */ + apply_forced_caps(c); #ifdef CONFIG_X86_64 c->apicid = apic->phys_pkg_id(c->initial_apicid, 0); @@ -1020,10 +1027,7 @@ static void identify_cpu(struct cpuinfo_ * Clear/Set all flags overriden by options, need do it * before following smp all cpus cap AND. */ - for (i = 0; i < NCAPINTS; i++) { - c->x86_capability[i] &= ~cpu_caps_cleared[i]; - c->x86_capability[i] |= cpu_caps_set[i]; - } + apply_forced_caps(c); /* * On SMP, boot_cpu_data holds the common feature set between Patches currently in stable-queue which might be from luto(a)kernel.org are queue-4.4/x86-mm-pat-dev-mem-remove-superfluous-error-message.patch queue-4.4/x86-cpufeatures-add-x86_bug_cpu_insecure.patch queue-4.4/x86-cpufeatures-make-cpu-bugs-sticky.patch queue-4.4/x86-vsdo-fix-build-on-paravirt_clock-y-kvm_guest-n.patch queue-4.4/x86-pti-efi-broken-conversion-from-efi-to-kernel-page-table.patch queue-4.4/x86-documentation-add-pti-description.patch queue-4.4/x86-cpu-factor-out-application-of-forced-cpu-caps.patch queue-4.4/selftests-x86-add-test_vsyscall.patch queue-4.4/x86-cpu-merge-bugs.c-and-bugs_64.c.patch queue-4.4/x86-alternatives-fix-optimize_nops-checking.patch

7 years, 9 months

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