Commit Graph

1014601 Commits

Author SHA1 Message Date
Parav Pandit
cee57d4fe7 iommu/vt-d: Remove unnecessary braces
No need for braces for single line statement under if() block.

Signed-off-by: Parav Pandit <parav@nvidia.com>
Signed-off-by: Lu Baolu <baolu.lu@linux.intel.com>
Link: https://lore.kernel.org/r/20210530075053.264218-1-parav@nvidia.com
Link: https://lore.kernel.org/r/20210610020115.1637656-22-baolu.lu@linux.intel.com
Signed-off-by: Joerg Roedel <jroedel@suse.de>
2021-06-10 09:06:14 +02:00
Parav Pandit
74f6d776ae iommu/vt-d: Removed unused iommu_count in dmar domain
DMAR domain uses per DMAR refcount. It is indexed by iommu seq_id.
Older iommu_count is only incremented and decremented but no decisions
are taken based on this refcount. This is not of much use.

Hence, remove iommu_count and further simplify domain_detach_iommu()
by returning void.

Signed-off-by: Parav Pandit <parav@nvidia.com>
Signed-off-by: Lu Baolu <baolu.lu@linux.intel.com>
Link: https://lore.kernel.org/r/20210530075053.264218-1-parav@nvidia.com
Link: https://lore.kernel.org/r/20210610020115.1637656-21-baolu.lu@linux.intel.com
Signed-off-by: Joerg Roedel <jroedel@suse.de>
2021-06-10 09:06:14 +02:00
Parav Pandit
1f106ff0ea iommu/vt-d: Use bitfields for DMAR capabilities
IOTLB device presence, iommu coherency and snooping are boolean
capabilities. Use them as bits and keep them adjacent.

Structure layout before the reorg.
$ pahole -C dmar_domain drivers/iommu/intel/dmar.o
struct dmar_domain {
        int                        nid;                  /*     0     4 */
        unsigned int               iommu_refcnt[128];    /*     4   512 */
        /* --- cacheline 8 boundary (512 bytes) was 4 bytes ago --- */
        u16                        iommu_did[128];       /*   516   256 */
        /* --- cacheline 12 boundary (768 bytes) was 4 bytes ago --- */
        bool                       has_iotlb_device;     /*   772     1 */

        /* XXX 3 bytes hole, try to pack */

        struct list_head           devices;              /*   776    16 */
        struct list_head           subdevices;           /*   792    16 */
        struct iova_domain         iovad __attribute__((__aligned__(8)));
							 /*   808  2320 */
        /* --- cacheline 48 boundary (3072 bytes) was 56 bytes ago --- */
        struct dma_pte *           pgd;                  /*  3128     8 */
        /* --- cacheline 49 boundary (3136 bytes) --- */
        int                        gaw;                  /*  3136     4 */
        int                        agaw;                 /*  3140     4 */
        int                        flags;                /*  3144     4 */
        int                        iommu_coherency;      /*  3148     4 */
        int                        iommu_snooping;       /*  3152     4 */
        int                        iommu_count;          /*  3156     4 */
        int                        iommu_superpage;      /*  3160     4 */

        /* XXX 4 bytes hole, try to pack */

        u64                        max_addr;             /*  3168     8 */
        u32                        default_pasid;        /*  3176     4 */

        /* XXX 4 bytes hole, try to pack */

        struct iommu_domain        domain;               /*  3184    72 */

        /* size: 3256, cachelines: 51, members: 18 */
        /* sum members: 3245, holes: 3, sum holes: 11 */
        /* forced alignments: 1 */
        /* last cacheline: 56 bytes */
} __attribute__((__aligned__(8)));

After arranging it for natural padding and to make flags as u8 bits, it
saves 8 bytes for the struct.

struct dmar_domain {
        int                        nid;                  /*     0     4 */
        unsigned int               iommu_refcnt[128];    /*     4   512 */
        /* --- cacheline 8 boundary (512 bytes) was 4 bytes ago --- */
        u16                        iommu_did[128];       /*   516   256 */
        /* --- cacheline 12 boundary (768 bytes) was 4 bytes ago --- */
        u8                         has_iotlb_device:1;   /*   772: 0  1 */
        u8                         iommu_coherency:1;    /*   772: 1  1 */
        u8                         iommu_snooping:1;     /*   772: 2  1 */

        /* XXX 5 bits hole, try to pack */
        /* XXX 3 bytes hole, try to pack */

        struct list_head           devices;              /*   776    16 */
        struct list_head           subdevices;           /*   792    16 */
        struct iova_domain         iovad __attribute__((__aligned__(8)));
							 /*   808  2320 */
        /* --- cacheline 48 boundary (3072 bytes) was 56 bytes ago --- */
        struct dma_pte *           pgd;                  /*  3128     8 */
        /* --- cacheline 49 boundary (3136 bytes) --- */
        int                        gaw;                  /*  3136     4 */
        int                        agaw;                 /*  3140     4 */
        int                        flags;                /*  3144     4 */
        int                        iommu_count;          /*  3148     4 */
        int                        iommu_superpage;      /*  3152     4 */

        /* XXX 4 bytes hole, try to pack */

        u64                        max_addr;             /*  3160     8 */
        u32                        default_pasid;        /*  3168     4 */

        /* XXX 4 bytes hole, try to pack */

        struct iommu_domain        domain;               /*  3176    72 */

        /* size: 3248, cachelines: 51, members: 18 */
        /* sum members: 3236, holes: 3, sum holes: 11 */
        /* sum bitfield members: 3 bits, bit holes: 1, sum bit holes: 5 bits */
        /* forced alignments: 1 */
        /* last cacheline: 48 bytes */
} __attribute__((__aligned__(8)));

Signed-off-by: Parav Pandit <parav@nvidia.com>
Signed-off-by: Lu Baolu <baolu.lu@linux.intel.com>
Link: https://lore.kernel.org/r/20210530075053.264218-1-parav@nvidia.com
Link: https://lore.kernel.org/r/20210610020115.1637656-20-baolu.lu@linux.intel.com
Signed-off-by: Joerg Roedel <jroedel@suse.de>
2021-06-10 09:06:13 +02:00
YueHaibing
3bc770b0e9 iommu/vt-d: Use DEVICE_ATTR_RO macro
Use DEVICE_ATTR_RO() helper instead of plain DEVICE_ATTR(),
which makes the code a bit shorter and easier to read.

Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Signed-off-by: Lu Baolu <baolu.lu@linux.intel.com>
Link: https://lore.kernel.org/r/20210528130229.22108-1-yuehaibing@huawei.com
Link: https://lore.kernel.org/r/20210610020115.1637656-19-baolu.lu@linux.intel.com
Signed-off-by: Joerg Roedel <jroedel@suse.de>
2021-06-10 09:06:13 +02:00
Gustavo A. R. Silva
606636dcbd iommu/vt-d: Fix out-bounds-warning in intel/svm.c
Replace a couple of calls to memcpy() with simple assignments in order
to fix the following out-of-bounds warning:

drivers/iommu/intel/svm.c:1198:4: warning: 'memcpy' offset [25, 32] from
    the object at 'desc' is out of the bounds of referenced subobject
    'qw2' with type 'long long unsigned int' at offset 16 [-Warray-bounds]

The problem is that the original code is trying to copy data into a
couple of struct members adjacent to each other in a single call to
memcpy(). This causes a legitimate compiler warning because memcpy()
overruns the length of &desc.qw2 and &resp.qw2, respectively.

This helps with the ongoing efforts to globally enable -Warray-bounds
and get us closer to being able to tighten the FORTIFY_SOURCE routines
on memcpy().

Link: https://github.com/KSPP/linux/issues/109
Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org>
Signed-off-by: Lu Baolu <baolu.lu@linux.intel.com>
Link: https://lore.kernel.org/r/20210414201403.GA392764@embeddedor
Link: https://lore.kernel.org/r/20210610020115.1637656-18-baolu.lu@linux.intel.com
Signed-off-by: Joerg Roedel <jroedel@suse.de>
2021-06-10 09:06:13 +02:00
Lu Baolu
0f4834ab25 iommu/vt-d: Add PRQ handling latency sampling
The execution time for page fault request handling is performance critical
and needs to be monitored. This adds code to sample the execution time of
page fault request handling.

Signed-off-by: Lu Baolu <baolu.lu@linux.intel.com>
Link: https://lore.kernel.org/r/20210520031531.712333-1-baolu.lu@linux.intel.com
Link: https://lore.kernel.org/r/20210610020115.1637656-17-baolu.lu@linux.intel.com
Signed-off-by: Joerg Roedel <jroedel@suse.de>
2021-06-10 09:06:13 +02:00
Lu Baolu
74eb87a0f9 iommu/vt-d: Add cache invalidation latency sampling
Queued invalidation execution time is performance critical and needs
to be monitored. This adds code to sample the execution time of IOTLB/
devTLB/ICE cache invalidation.

Signed-off-by: Lu Baolu <baolu.lu@linux.intel.com>
Link: https://lore.kernel.org/r/20210520031531.712333-1-baolu.lu@linux.intel.com
Link: https://lore.kernel.org/r/20210610020115.1637656-16-baolu.lu@linux.intel.com
Signed-off-by: Joerg Roedel <jroedel@suse.de>
2021-06-10 09:06:13 +02:00
Lu Baolu
456bb0b97f iommu/vt-d: Expose latency monitor data through debugfs
A debugfs interface /sys/kernel/debug/iommu/intel/dmar_perf_latency is
created to control and show counts of execution time ranges for various
types per DMAR. The interface may help debug any potential performance
issue.

By default, the interface is disabled.

Possible write value of /sys/kernel/debug/iommu/intel/dmar_perf_latency
  0 - disable sampling all latency data
  1 - enable sampling IOTLB invalidation latency data
  2 - enable sampling devTLB invalidation latency data
  3 - enable sampling intr entry cache invalidation latency data
  4 - enable sampling prq handling latency data

Read /sys/kernel/debug/iommu/intel/dmar_perf_latency gives a snapshot
of sampling result of all enabled monitors.

Signed-off-by: Fenghua Yu <fenghua.yu@intel.com>
Signed-off-by: Lu Baolu <baolu.lu@linux.intel.com>
Link: https://lore.kernel.org/r/20210520031531.712333-1-baolu.lu@linux.intel.com
Link: https://lore.kernel.org/r/20210610020115.1637656-15-baolu.lu@linux.intel.com
Signed-off-by: Joerg Roedel <jroedel@suse.de>
2021-06-10 09:06:13 +02:00
Lu Baolu
55ee5e67a5 iommu/vt-d: Add common code for dmar latency performance monitors
The execution time of some operations is very performance critical, such
as cache invalidation and PRQ processing time. This adds some common code
to monitor the execution time range of those operations. The interfaces
include enabling/disabling, checking status, updating sampling data and
providing a common string format for users.

Signed-off-by: Fenghua Yu <fenghua.yu@intel.com>
Signed-off-by: Lu Baolu <baolu.lu@linux.intel.com>
Link: https://lore.kernel.org/r/20210520031531.712333-1-baolu.lu@linux.intel.com
Link: https://lore.kernel.org/r/20210610020115.1637656-14-baolu.lu@linux.intel.com
Signed-off-by: Joerg Roedel <jroedel@suse.de>
2021-06-10 09:06:13 +02:00
Lu Baolu
e93a67f5a0 iommu/vt-d: Add prq_report trace event
This adds a new trace event to track the page fault request report.
This event will provide almost all information defined in a page
request descriptor.

A sample output:
| prq_report: dmar0/0000:00:0a.0 seq# 1: rid=0x50 addr=0x559ef6f97 r---- pasid=0x2 index=0x1
| prq_report: dmar0/0000:00:0a.0 seq# 2: rid=0x50 addr=0x559ef6f9c rw--l pasid=0x2 index=0x1
| prq_report: dmar0/0000:00:0a.0 seq# 3: rid=0x50 addr=0x559ef6f98 r---- pasid=0x2 index=0x1
| prq_report: dmar0/0000:00:0a.0 seq# 4: rid=0x50 addr=0x559ef6f9d rw--l pasid=0x2 index=0x1
| prq_report: dmar0/0000:00:0a.0 seq# 5: rid=0x50 addr=0x559ef6f99 r---- pasid=0x2 index=0x1
| prq_report: dmar0/0000:00:0a.0 seq# 6: rid=0x50 addr=0x559ef6f9e rw--l pasid=0x2 index=0x1
| prq_report: dmar0/0000:00:0a.0 seq# 7: rid=0x50 addr=0x559ef6f9a r---- pasid=0x2 index=0x1
| prq_report: dmar0/0000:00:0a.0 seq# 8: rid=0x50 addr=0x559ef6f9f rw--l pasid=0x2 index=0x1

This will be helpful for I/O page fault related debugging.

Signed-off-by: Lu Baolu <baolu.lu@linux.intel.com>
Link: https://lore.kernel.org/r/20210520031531.712333-1-baolu.lu@linux.intel.com
Link: https://lore.kernel.org/r/20210610020115.1637656-13-baolu.lu@linux.intel.com
Signed-off-by: Joerg Roedel <jroedel@suse.de>
2021-06-10 09:06:13 +02:00
Lu Baolu
d5b9e4bfe0 iommu/vt-d: Report prq to io-pgfault framework
Let the IO page fault requests get handled through the io-pgfault
framework.

Signed-off-by: Lu Baolu <baolu.lu@linux.intel.com>
Link: https://lore.kernel.org/r/20210520031531.712333-1-baolu.lu@linux.intel.com
Link: https://lore.kernel.org/r/20210610020115.1637656-12-baolu.lu@linux.intel.com
Signed-off-by: Joerg Roedel <jroedel@suse.de>
2021-06-10 09:06:13 +02:00
Lu Baolu
4c82b88696 iommu/vt-d: Allocate/register iopf queue for sva devices
This allocates and registers the iopf queue infrastructure for devices
which want to support IO page fault for SVA.

Signed-off-by: Lu Baolu <baolu.lu@linux.intel.com>
Link: https://lore.kernel.org/r/20210520031531.712333-1-baolu.lu@linux.intel.com
Link: https://lore.kernel.org/r/20210610020115.1637656-11-baolu.lu@linux.intel.com
Signed-off-by: Joerg Roedel <jroedel@suse.de>
2021-06-10 09:06:13 +02:00
Lu Baolu
ae7f09b14b iommu/vt-d: Refactor prq_event_thread()
Refactor prq_event_thread() by moving handling single prq event out of
the main loop.

Signed-off-by: Lu Baolu <baolu.lu@linux.intel.com>
Link: https://lore.kernel.org/r/20210520031531.712333-1-baolu.lu@linux.intel.com
Link: https://lore.kernel.org/r/20210610020115.1637656-10-baolu.lu@linux.intel.com
Signed-off-by: Joerg Roedel <jroedel@suse.de>
2021-06-10 09:06:13 +02:00
Lu Baolu
9e52cc0fed iommu/vt-d: Use common helper to lookup svm devices
It's common to iterate the svm device list and find a matched device. Add
common helpers to do this and consolidate the code.

Signed-off-by: Lu Baolu <baolu.lu@linux.intel.com>
Link: https://lore.kernel.org/r/20210520031531.712333-1-baolu.lu@linux.intel.com
Link: https://lore.kernel.org/r/20210610020115.1637656-9-baolu.lu@linux.intel.com
Signed-off-by: Joerg Roedel <jroedel@suse.de>
2021-06-10 09:06:13 +02:00
Lu Baolu
4048377414 iommu/vt-d: Use iommu_sva_alloc(free)_pasid() helpers
Align the pasid alloc/free code with the generic helpers defined in the
iommu core. This also refactored the SVA binding code to improve the
readability.

Signed-off-by: Lu Baolu <baolu.lu@linux.intel.com>
Link: https://lore.kernel.org/r/20210520031531.712333-1-baolu.lu@linux.intel.com
Link: https://lore.kernel.org/r/20210610020115.1637656-8-baolu.lu@linux.intel.com
Signed-off-by: Joerg Roedel <jroedel@suse.de>
2021-06-10 09:06:12 +02:00
Lu Baolu
100b8a14a3 iommu/vt-d: Add pasid private data helpers
We are about to use iommu_sva_alloc/free_pasid() helpers in iommu core.
That means the pasid life cycle will be managed by iommu core. Use a
local array to save the per pasid private data instead of attaching it
the real pasid.

Signed-off-by: Lu Baolu <baolu.lu@linux.intel.com>
Link: https://lore.kernel.org/r/20210520031531.712333-1-baolu.lu@linux.intel.com
Link: https://lore.kernel.org/r/20210610020115.1637656-7-baolu.lu@linux.intel.com
Signed-off-by: Joerg Roedel <jroedel@suse.de>
2021-06-10 09:06:12 +02:00
Lu Baolu
521f546b4e iommu/vt-d: Support asynchronous IOMMU nested capabilities
Current VT-d implementation supports nested translation only if all
underlying IOMMUs support the nested capability. This is unnecessary
as the upper layer is allowed to create different containers and set
them with different type of iommu backend. The IOMMU driver needs to
guarantee that devices attached to a nested mode iommu_domain should
support nested capabilility.

Signed-off-by: Lu Baolu <baolu.lu@linux.intel.com>
Link: https://lore.kernel.org/r/20210517065701.5078-1-baolu.lu@linux.intel.com
Link: https://lore.kernel.org/r/20210610020115.1637656-6-baolu.lu@linux.intel.com
Signed-off-by: Joerg Roedel <jroedel@suse.de>
2021-06-10 09:06:12 +02:00
Lu Baolu
879fcc6bda iommu/vt-d: Select PCI_ATS explicitly
The Intel VT-d implementation supports device TLB management. Select
PCI_ATS explicitly so that the pci_ats helpers are always available.

Signed-off-by: Lu Baolu <baolu.lu@linux.intel.com>
Acked-by: Will Deacon <will@kernel.org>
Link: https://lore.kernel.org/r/20210512065313.3441309-1-baolu.lu@linux.intel.com
Link: https://lore.kernel.org/r/20210610020115.1637656-5-baolu.lu@linux.intel.com
Signed-off-by: Joerg Roedel <jroedel@suse.de>
2021-06-10 09:06:12 +02:00
Lu Baolu
719a193356 iommu/vt-d: Tweak the description of a DMA fault
The Intel IOMMU driver reports the DMA fault reason in a decimal number
while the VT-d specification uses a hexadecimal one. It's inconvenient
that users need to covert them everytime before consulting the spec.
Let's use hexadecimal number for a DMA fault reason.

The fault message uses 0xffffffff as PASID for DMA requests w/o PASID.
This is confusing. Tweak this by adding "NO_PASID" explicitly.

Reviewed-by: Ashok Raj <ashok.raj@intel.com>
Signed-off-by: Lu Baolu <baolu.lu@linux.intel.com>
Link: https://lore.kernel.org/r/20210517065425.4953-1-baolu.lu@linux.intel.com
Link: https://lore.kernel.org/r/20210610020115.1637656-4-baolu.lu@linux.intel.com
Signed-off-by: Joerg Roedel <jroedel@suse.de>
2021-06-10 09:06:12 +02:00
Aditya Srivastava
367f82de5a iommu/vt-d: Fix kernel-doc syntax in file header
The opening comment mark '/**' is used for highlighting the beginning of
kernel-doc comments.
The header for drivers/iommu/intel/pasid.c follows this syntax, but
the content inside does not comply with kernel-doc.

This line was probably not meant for kernel-doc parsing, but is parsed
due to the presence of kernel-doc like comment syntax(i.e, '/**'), which
causes unexpected warnings from kernel-doc:
warning: Function parameter or member 'fmt' not described in 'pr_fmt'

Provide a simple fix by replacing this occurrence with general comment
format, i.e. '/*', to prevent kernel-doc from parsing it.

Signed-off-by: Aditya Srivastava <yashsri421@gmail.com>
Acked-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Lu Baolu <baolu.lu@linux.intel.com>
Link: https://lore.kernel.org/r/20210523143245.19040-1-yashsri421@gmail.com
Link: https://lore.kernel.org/r/20210610020115.1637656-3-baolu.lu@linux.intel.com
Signed-off-by: Joerg Roedel <jroedel@suse.de>
2021-06-10 09:06:12 +02:00
Colin Ian King
05d2cbf969 iommu/vt-d: Remove redundant assignment to variable agaw
The variable agaw is initialized with a value that is never read and it
is being updated later with a new value as a counter in a for-loop. The
initialization is redundant and can be removed.

Addresses-Coverity: ("Unused value")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Lu Baolu <baolu.lu@linux.intel.com>
Link: https://lore.kernel.org/r/20210416171826.64091-1-colin.king@canonical.com
Link: https://lore.kernel.org/r/20210610020115.1637656-2-baolu.lu@linux.intel.com
Signed-off-by: Joerg Roedel <jroedel@suse.de>
2021-06-10 09:06:12 +02:00
Linus Torvalds
8124c8a6b3 Linux 5.13-rc4 v5.13-rc4 2021-05-30 11:58:25 -10:00
Linus Torvalds
b90e90f40b Merge branch 'i2c/for-current' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux
Pull i2c fixes from Wolfram Sang:
 "This is a bit larger than usual at rc4 time. The reason is due to
  Lee's work of fixing newly reported build warnings.

  The rest is fixes as usual"

* 'i2c/for-current' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux: (22 commits)
  MAINTAINERS: adjust to removing i2c designware platform data
  i2c: s3c2410: fix possible NULL pointer deref on read message after write
  i2c: mediatek: Disable i2c start_en and clear intr_stat brfore reset
  i2c: i801: Don't generate an interrupt on bus reset
  i2c: mpc: implement erratum A-004447 workaround
  powerpc/fsl: set fsl,i2c-erratum-a004447 flag for P1010 i2c controllers
  powerpc/fsl: set fsl,i2c-erratum-a004447 flag for P2041 i2c controllers
  dt-bindings: i2c: mpc: Add fsl,i2c-erratum-a004447 flag
  i2c: busses: i2c-stm32f4: Remove incorrectly placed ' ' from function name
  i2c: busses: i2c-st: Fix copy/paste function misnaming issues
  i2c: busses: i2c-pnx: Provide descriptions for 'alg_data' data structure
  i2c: busses: i2c-ocores: Place the expected function names into the documentation headers
  i2c: busses: i2c-eg20t: Fix 'bad line' issue and provide description for 'msgs' param
  i2c: busses: i2c-designware-master: Fix misnaming of 'i2c_dw_init_master()'
  i2c: busses: i2c-cadence: Fix incorrectly documented 'enum cdns_i2c_slave_mode'
  i2c: busses: i2c-ali1563: File headers are not good candidates for kernel-doc
  i2c: muxes: i2c-arb-gpio-challenge: Demote non-conformant kernel-doc headers
  i2c: busses: i2c-nomadik: Fix formatting issue pertaining to 'timeout'
  i2c: sh_mobile: Use new clock calculation formulas for RZ/G2E
  i2c: I2C_HISI should depend on ACPI
  ...
2021-05-29 18:24:00 -10:00
Linus Torvalds
9a76c0ee3a Merge tag 'seccomp-fixes-v5.13-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux
Pull seccomp fixes from Kees Cook:
 "This fixes a hard-to-hit race condition in the addfd user_notif
  feature of seccomp, visible since v5.9.

  And a small documentation fix"

* tag 'seccomp-fixes-v5.13-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux:
  seccomp: Refactor notification handler to prepare for new semantics
  Documentation: seccomp: Fix user notification documentation
2021-05-29 18:16:09 -10:00
Linus Torvalds
9d68fe84f8 Merge tag 'riscv-for-linus-5.13-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux
Pull RISC-V fixes from Palmer Dabbelt:
 "A handful of RISC-V related fixes:

   - avoid errors when the stack tracing code is tracing itself.

   - resurrect the memtest= kernel command line argument on RISC-V,
     which was briefly enabled during the merge window before a
     refactoring disabled it.

   - build fix and some warning cleanups"

* tag 'riscv-for-linus-5.13-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux:
  riscv: kexec: Fix W=1 build warnings
  riscv: kprobes: Fix build error when MMU=n
  riscv: Select ARCH_USE_MEMTEST
  riscv: stacktrace: fix the riscv stacktrace when CONFIG_FRAME_POINTER enabled
2021-05-29 18:10:10 -10:00
Linus Torvalds
75b9c727af Merge tag 'xfs-5.13-fixes-3' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux
Pull xfs fixes from Darrick Wong:
 "This week's pile mitigates some decades-old problems in how extent
  size hints interact with realtime volumes, fixes some failures in
  online shrink, and fixes a problem where directory and symlink
  shrinking on extremely fragmented filesystems could fail.

  The most user-notable change here is to point users at our (new) IRC
  channel on OFTC. Freedom isn't free, it costs folks like you and me;
  and if you don't kowtow, they'll expel everyone and take over your
  channel. (Ok, ok, that didn't fit the song lyrics...)

  Summary:

   - Fix a bug where unmapping operations end earlier than expected,
     which can cause chaos on multi-block directory and symlink shrink
     operations.

   - Fix an erroneous assert that can trigger if we try to transition a
     bmap structure from btree format to extents format with zero
     extents. This was exposed by xfs/538"

* tag 'xfs-5.13-fixes-3' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux:
  xfs: bunmapi has unnecessary AG lock ordering issues
  xfs: btree format inode forks can have zero extents
  xfs: add new IRC channel to MAINTAINERS
  xfs: validate extsz hints against rt extent size when rtinherit is set
  xfs: standardize extent size hint validation
  xfs: check free AG space when making per-AG reservations
2021-05-29 17:47:19 -10:00
Sargun Dhillon
ddc4739169 seccomp: Refactor notification handler to prepare for new semantics
This refactors the user notification code to have a do / while loop around
the completion condition. This has a small change in semantic, in that
previously we ignored addfd calls upon wakeup if the notification had been
responded to, but instead with the new change we check for an outstanding
addfd calls prior to returning to userspace.

Rodrigo Campos also identified a bug that can result in addfd causing
an early return, when the supervisor didn't actually handle the
syscall [1].

[1]: https://lore.kernel.org/lkml/20210413160151.3301-1-rodrigo@kinvolk.io/

Fixes: 7cf97b1254 ("seccomp: Introduce addfd ioctl to seccomp user notifier")
Signed-off-by: Sargun Dhillon <sargun@sargun.me>
Acked-by: Tycho Andersen <tycho@tycho.pizza>
Acked-by: Christian Brauner <christian.brauner@ubuntu.com>
Signed-off-by: Kees Cook <keescook@chromium.org>
Tested-by: Rodrigo Campos <rodrigo@kinvolk.io>
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/r/20210517193908.3113-3-sargun@sargun.me
2021-05-29 11:13:27 -07:00
Linus Torvalds
df8c66c4cf Merge tag 'thermal-v5.13-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/thermal/linux
Pull thermal fixes from Daniel Lezcano:

 - Fix uninitialized error code value for the SPMI adc driver (Yang
   Yingliang)

 - Fix kernel doc warning (Yang Li)

 - Fix wrong read-write thermal trip point initialization (Srinivas
   Pandruvada)

* tag 'thermal-v5.13-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/thermal/linux:
  thermal/drivers/qcom: Fix error code in adc_tm5_get_dt_channel_data()
  thermal/ti-soc-thermal: Fix kernel-doc
  thermal/drivers/intel: Initialize RW trip to THERMAL_TEMP_INVALID
2021-05-29 06:55:55 -10:00
Linus Torvalds
f956cb99b9 Merge tag 'char-misc-5.13-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc
Pull char/misc driver fixes from Greg KH:
 "Here are some tiny char/misc driver fixes for 5.13-rc4.

  Nothing huge here, just some tiny fixes for reported issues:

   - two interconnect driver fixes

   - kgdb build warning fix for gcc-11

   - hgafb regression fix

   - soundwire driver fix

   - mei driver fix

  All have been in linux-next with no reported issues"

* tag 'char-misc-5.13-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc:
  mei: request autosuspend after sending rx flow control
  kgdb: fix gcc-11 warnings harder
  video: hgafb: correctly handle card detect failure during probe
  soundwire: qcom: fix handling of qcom,ports-block-pack-mode
  interconnect: qcom: Add missing MODULE_DEVICE_TABLE
  interconnect: qcom: bcm-voter: add a missing of_node_put()
2021-05-29 06:41:50 -10:00
Linus Torvalds
e1a9e3db3b Merge tag 'driver-core-5.13-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core
Pull driver core fixes from Greg KH:
 "Here are three small driver core / debugfs fixes for 5.13-rc4:

   - debugfs fix for incorrect "lockdown" mode for selinux accesses

   - two device link changes, one bugfix and one cleanup

  All of these have been in linux-next for over a week with no reported
  problems"

* tag 'driver-core-5.13-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core:
  drivers: base: Reduce device link removal code duplication
  drivers: base: Fix device link removal
  debugfs: fix security_locked_down() call for SELinux
2021-05-29 06:33:28 -10:00
Linus Torvalds
494b99f712 Merge tag 'staging-5.13-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging
Pull staging and IIO driver fixes from Greg KH:
 "Here are some small IIO and staging driver fixes for reported issues
  for 5.13-rc4.

  Nothing major here, tiny changes for reported problems, full details
  are in the shortlog if people are curious.

  All have been in linux-next for a while with no reported problems"

* tag 'staging-5.13-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging:
  iio: adc: ad7793: Add missing error code in ad7793_setup()
  iio: adc: ad7923: Fix undersized rx buffer.
  iio: adc: ad7768-1: Fix too small buffer passed to iio_push_to_buffers_with_timestamp()
  iio: dac: ad5770r: Put fwnode in error case during ->probe()
  iio: gyro: fxas21002c: balance runtime power in error path
  staging: emxx_udc: fix loop in _nbu2ss_nuke()
  staging: iio: cdc: ad7746: avoid overwrite of num_channels
  iio: adc: ad7192: handle regulator voltage error first
  iio: adc: ad7192: Avoid disabling a clock that was never enabled.
  iio: adc: ad7124: Fix potential overflow due to non sequential channel numbers
  iio: adc: ad7124: Fix missbalanced regulator enable / disable on error.
2021-05-29 06:29:13 -10:00
Linus Torvalds
3837f9a08b Merge tag 'tty-5.13-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty
Pull tty / serial driver fixes from Greg KH:
 "Here are some small fixes for reported problems for tty and serial
  drivers for 5.13-rc4.

  They consist of:

   - 8250 bugfixes and new device support

   - lockdown security mode fixup

   - syzbot found problems fixed

   - 8250_omap fix for interrupt storm

   - revert of 8250_omap driver fix as it caused worse problem than the
     original issue

  All but the last patch have been in linux-next for a while, the last
  one is a revert of a problem found in linux-next with the 8250_omap
  driver change"

* tag 'tty-5.13-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty:
  Revert "serial: 8250: 8250_omap: Fix possible interrupt storm"
  serial: 8250_pci: handle FL_NOIRQ board flag
  serial: rp2: use 'request_firmware' instead of 'request_firmware_nowait'
  serial: 8250_pci: Add support for new HPE serial device
  serial: 8250: 8250_omap: Fix possible interrupt storm
  serial: 8250: Use BIT(x) for UART_{CAP,BUG}_*
  serial: 8250: Add UART_BUG_TXRACE workaround for Aspeed VUART
  serial: 8250_dw: Add device HID for new AMD UART controller
  serial: sh-sci: Fix off-by-one error in FIFO threshold register setting
  serial: core: fix suspicious security_locked_down() call
  serial: tegra: Fix a mask operation that is always true
2021-05-29 06:25:16 -10:00
Linus Torvalds
523d0b1e9c Merge tag 'usb-5.13-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb
Pull USB / Thunderbolt fixes from Greg KH:
 "Here are a number of tiny USB and Thunderbolt driver fixes for
  5.13-rc4.

  They consist of:

   - thunderbolt fixes for some NVM bound issues

   - xhci fixes for reported problems

   - control-request fixups

   - documentation build warning fixes

   - new usb-serial driver device ids

   - typec bugfixes for reported issues

   - usbfs warning fixups (could be triggered from userspace)

   - other tiny fixes for reported problems.

  All of these have been in linux-next with no reported issues"

* tag 'usb-5.13-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (22 commits)
  xhci: Fix 5.12 regression of missing xHC cache clearing command after a Stall
  xhci: fix giving back URB with incorrect status regression in 5.12
  usb: gadget: udc: renesas_usb3: Fix a race in usb3_start_pipen()
  usb: typec: tcpm: Respond Not_Supported if no snk_vdo
  usb: typec: tcpm: Properly interrupt VDM AMS
  USB: trancevibrator: fix control-request direction
  usb: Restore the usb_header label
  usb: typec: tcpm: Use LE to CPU conversion when accessing msg->header
  usb: typec: ucsi: Clear pending after acking connector change
  usb: typec: mux: Fix matching with typec_altmode_desc
  misc/uss720: fix memory leak in uss720_probe
  usb: dwc3: gadget: Properly track pending and queued SG
  USB: usbfs: Don't WARN about excessively large memory allocations
  thunderbolt: usb4: Fix NVM read buffer bounds and offset issue
  thunderbolt: dma_port: Fix NVM read buffer bounds and offset issue
  usb: chipidea: udc: assign interrupt number to USB gadget structure
  usb: cdnsp: Fix lack of removing request from pending list.
  usb: cdns3: Fix runtime PM imbalance on error
  USB: serial: pl2303: add device id for ADLINK ND-6530 GC
  USB: serial: ti_usb_3410_5052: add startech.com device id
  ...
2021-05-29 06:11:21 -10:00
Linus Torvalds
224478289c Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm
Pull KVM fixes from Paolo Bonzini:
 "ARM fixes:

   - Another state update on exit to userspace fix

   - Prevent the creation of mixed 32/64 VMs

   - Fix regression with irqbypass not restarting the guest on failed
     connect

   - Fix regression with debug register decoding resulting in
     overlapping access

   - Commit exception state on exit to usrspace

   - Fix the MMU notifier return values

   - Add missing 'static' qualifiers in the new host stage-2 code

  x86 fixes:

   - fix guest missed wakeup with assigned devices

   - fix WARN reported by syzkaller

   - do not use BIT() in UAPI headers

   - make the kvm_amd.avic parameter bool

  PPC fixes:

   - make halt polling heuristics consistent with other architectures

  selftests:

   - various fixes

   - new performance selftest memslot_perf_test

   - test UFFD minor faults in demand_paging_test"

* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (44 commits)
  selftests: kvm: fix overlapping addresses in memslot_perf_test
  KVM: X86: Kill off ctxt->ud
  KVM: X86: Fix warning caused by stale emulation context
  KVM: X86: Use kvm_get_linear_rip() in single-step and #DB/#BP interception
  KVM: x86/mmu: Fix comment mentioning skip_4k
  KVM: VMX: update vcpu posted-interrupt descriptor when assigning device
  KVM: rename KVM_REQ_PENDING_TIMER to KVM_REQ_UNBLOCK
  KVM: x86: add start_assignment hook to kvm_x86_ops
  KVM: LAPIC: Narrow the timer latency between wait_lapic_expire and world switch
  selftests: kvm: do only 1 memslot_perf_test run by default
  KVM: X86: Use _BITUL() macro in UAPI headers
  KVM: selftests: add shared hugetlbfs backing source type
  KVM: selftests: allow using UFFD minor faults for demand paging
  KVM: selftests: create alias mappings when using shared memory
  KVM: selftests: add shmem backing source type
  KVM: selftests: refactor vm_mem_backing_src_type flags
  KVM: selftests: allow different backing source types
  KVM: selftests: compute correct demand paging size
  KVM: selftests: simplify setup_demand_paging error handling
  KVM: selftests: Print a message if /dev/kvm is missing
  ...
2021-05-29 06:02:25 -10:00
Linus Torvalds
866c4b8a18 Merge tag 's390-5.13-3' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux
Pull s390 fixes from Vasily Gorbik:
 "Fix races in vfio-ccw request handling"

* tag 's390-5.13-3' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux:
  vfio-ccw: Serialize FSM IDLE state with I/O completion
  vfio-ccw: Reset FSM state to IDLE inside FSM
  vfio-ccw: Check initialized flag in cp_init()
2021-05-29 05:51:53 -10:00
Paolo Bonzini
000ac42953 selftests: kvm: fix overlapping addresses in memslot_perf_test
vm_create allocates memory and maps it close to GPA.  This memory
is separate from what is allocated in subsequent calls to
vm_userspace_mem_region_add, so it is incorrect to pass the
test memory size to vm_create_default.  Just pass a small
fixed amount of memory which can be used later for page table,
otherwise GPAs are already allocated at MEM_GPA and the
test aborts.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2021-05-29 06:28:06 -04:00
Linus Torvalds
6799d4f2da Merge tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi
Pull SCSI fixes from James Bottomley:
 "Ten small fixes, all in drivers"

* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
  scsi: target: qla2xxx: Wait for stop_phase1 at WWN removal
  scsi: hisi_sas: Drop free_irq() of devm_request_irq() allocated irq
  scsi: vmw_pvscsi: Set correct residual data length
  scsi: bnx2fc: Return failure if io_req is already in ABTS processing
  scsi: aic7xxx: Remove multiple definition of globals
  scsi: aic7xxx: Restore several defines for aic7xxx firmware build
  scsi: target: iblock: Fix smp_processor_id() BUG messages
  scsi: libsas: Use _safe() loop in sas_resume_port()
  scsi: target: tcmu: Fix xarray RCU warning
  scsi: target: core: Avoid smp_processor_id() in preemptible code
2021-05-28 14:47:48 -10:00
Linus Torvalds
0217a27e4d Merge tag 'block-5.13-2021-05-28' of git://git.kernel.dk/linux-block
Pull block fixes from Jens Axboe:

 - NVMe pull request (Christoph):
      - fix a memory leak in nvme_cdev_add (Guoqing Jiang)
      - fix inline data size comparison in nvmet_tcp_queue_response (Hou
        Pu)
      - fix false keep-alive timeout when a controller is torn down
        (Sagi Grimberg)
      - fix a nvme-tcp Kconfig dependency (Sagi Grimberg)
      - short-circuit reconnect retries for FC (Hannes Reinecke)
      - decode host pathing error for connect (Hannes Reinecke)

 - MD pull request (Song):
      - Fix incorrect chunk boundary assert (Christoph)

 - Fix s390/dasd verification panic (Stefan)

* tag 'block-5.13-2021-05-28' of git://git.kernel.dk/linux-block:
  nvmet: fix false keep-alive timeout when a controller is torn down
  nvmet-tcp: fix inline data size comparison in nvmet_tcp_queue_response
  nvme-tcp: remove incorrect Kconfig dep in BLK_DEV_NVME
  md/raid5: remove an incorrect assert in in_chunk_boundary
  s390/dasd: add missing discipline function
  nvme-fabrics: decode host pathing error for connect
  nvme-fc: short-circuit reconnect retries
  nvme: fix potential memory leaks in nvme_cdev_add
2021-05-28 14:42:37 -10:00
Linus Torvalds
b3dbbae609 Merge tag 'io_uring-5.13-2021-05-28' of git://git.kernel.dk/linux-block
Pull io_uring fixes from Jens Axboe:
 "A few minor fixes:

   - Fix an issue with hashed wait removal on exit (Zqiang, Pavel)

   - Fix a recent data race introduced in this series (Marco)"

* tag 'io_uring-5.13-2021-05-28' of git://git.kernel.dk/linux-block:
  io_uring: fix data race to avoid potential NULL-deref
  io-wq: Fix UAF when wakeup wqe in hash waitqueue
  io_uring/io-wq: close io-wq full-stop gap
2021-05-28 14:35:55 -10:00
Linus Torvalds
567d1fd853 Merge tag 'drm-fixes-2021-05-29' of git://anongit.freedesktop.org/drm/drm
Pull drm fixes from Dave Airlie:
 "Pretty quiet this week, couple of amdgpu, one i915, and a few misc otherwise.

  ttm:
   - prevent irrelevant swapout

  amdgpu:
   - MultiGPU fan fix
   - VCN powergating fixes

  amdkfd:
   - Fix SDMA register offset error

  meson:
   - fix shutdown crash

  i915:
   - Re-enable LTTPR non-transparent LT mode for DPCD_REV < 1.4"

* tag 'drm-fixes-2021-05-29' of git://anongit.freedesktop.org/drm/drm:
  drm/ttm: Skip swapout if ttm object is not populated
  drm/i915: Reenable LTTPR non-transparent LT mode for DPCD_REV<1.4
  drm/meson: fix shutdown crash when component not probed
  drm/amdgpu/jpeg3: add cancel_delayed_work_sync before power gate
  drm/amdgpu/jpeg2.5: add cancel_delayed_work_sync before power gate
  drm/amdgpu/jpeg2.0: add cancel_delayed_work_sync before power gate
  drm/amdgpu/vcn3: add cancel_delayed_work_sync before power gate
  drm/amdgpu/vcn2.5: add cancel_delayed_work_sync before power gate
  drm/amdgpu/vcn2.0: add cancel_delayed_work_sync before power gate
  drm/amdgpu/vcn1: add cancel_delayed_work_sync before power gate
  drm/amdkfd: correct sienna_cichlid SDMA RLC register offset error
  drm/amd/pm: correct MGpuFanBoost setting
2021-05-28 14:28:58 -10:00
Linus Torvalds
f289d99045 Merge tag 'perf-tools-fixes-for-v5.13-2021-05-28' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux
Pull perf tools fixes from Arnaldo Carvalho de Melo:

 - Fix error checking of BPF prog attachment in 'perf stat'.

 - Fix getting maximum number of fds in the vendor events JSON parser.

 - Move debug initialization earlier, fixing a segfault in some cases.

 - Fix eventcode of power10 JSON events.

* tag 'perf-tools-fixes-for-v5.13-2021-05-28' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux:
  perf vendor events powerpc: Fix eventcode of power10 JSON events
  perf stat: Fix error check for bpf_program__attach
  perf debug: Move debug initialization earlier
  perf jevents: Fix getting maximum number of fds
2021-05-28 14:23:05 -10:00
Linus Torvalds
7c0ec89d31 Merge tag '5.13-rc4-smb3' of git://git.samba.org/sfrench/cifs-2.6
Pull cifs fixes from Steve French:
 "Three SMB3 fixes.

  Two for stable, and the other fixes a problem pointed out with a
  recently added ioctl"

* tag '5.13-rc4-smb3' of git://git.samba.org/sfrench/cifs-2.6:
  cifs: change format of CIFS_FULL_KEY_DUMP ioctl
  cifs: fix string declarations and assignments in tracepoints
  cifs: set server->cipher_type to AES-128-CCM for SMB3.0
2021-05-28 14:15:47 -10:00
Linus Torvalds
5ff2756afd Merge tag 'nfs-for-5.13-2' of git://git.linux-nfs.org/projects/trondmy/linux-nfs
Pull NFS client bugfixes from Trond Myklebust:
"Stable fixes:
   - Fix v4.0/v4.1 SEEK_DATA return -ENOTSUPP when set NFS_V4_2 config
   - Fix Oops in xs_tcp_send_request() when transport is disconnected
   - Fix a NULL pointer dereference in pnfs_mark_matching_lsegs_return()

  Bugfixes:
   - Fix instances where signal_pending() should be fatal_signal_pending()
   - fix an incorrect limit in filelayout_decode_layout()
   - Fixes for the SUNRPC backlogged RPC queue
   - Don't corrupt the value of pg_bytes_written in nfs_do_recoalesce()
   - Revert commit 586a0787ce ("Clean up rpcrdma_prepare_readch()")"

* tag 'nfs-for-5.13-2' of git://git.linux-nfs.org/projects/trondmy/linux-nfs:
  nfs: Remove trailing semicolon in macros
  xprtrdma: Revert 586a0787ce
  NFSv4: Fix v4.0/v4.1 SEEK_DATA return -ENOTSUPP when set NFS_V4_2 config
  NFS: Clean up reset of the mirror accounting variables
  NFS: Don't corrupt the value of pg_bytes_written in nfs_do_recoalesce()
  NFS: Fix an Oopsable condition in __nfs_pageio_add_request()
  SUNRPC: More fixes for backlog congestion
  SUNRPC: Fix Oops in xs_tcp_send_request() when transport is disconnected
  NFSv4: Fix a NULL pointer dereference in pnfs_mark_matching_lsegs_return()
  SUNRPC in case of backlog, hand free slots directly to waiting task
  pNFS/NFSv4: Remove redundant initialization of 'rd_size'
  NFS: fix an incorrect limit in filelayout_decode_layout()
  fs/nfs: Use fatal_signal_pending instead of signal_pending
2021-05-28 08:53:19 -10:00
Linus Torvalds
fc683f967a Merge tag 'sound-5.13-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound
Pull sound fixes from Takashi Iwai:
 "A slightly high volume at this time due to pending ASoC fixes.

  While there are a few generic simple-card fixes for regressions, most
  of the changes are device-specific fixes: ASoC Intel SOF, codec
  clocks, other codec / platform fixes as well as usual HD-audio and
  USB-audio"

* tag 'sound-5.13-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound: (37 commits)
  ALSA: hda/realtek: fix mute/micmute LEDs and speaker for HP Zbook Fury 17 G8
  ALSA: hda/realtek: fix mute/micmute LEDs and speaker for HP Zbook Fury 15 G8
  ALSA: hda/realtek: fix mute/micmute LEDs and speaker for HP Zbook G8
  ALSA: hda/realtek: fix mute/micmute LEDs for HP 855 G8
  ALSA: hda/realtek: Chain in pop reduction fixup for ThinkStation P340
  ALSA: usb-audio: scarlett2: snd_scarlett_gen2_controls_create() can be static
  ALSA: hda/realtek: the bass speaker can't output sound on Yoga 9i
  ALSA: hda/realtek: Headphone volume is controlled by Front mixer
  ALSA: usb-audio: scarlett2: Improve driver startup messages
  ALSA: usb-audio: scarlett2: Fix device hang with ehci-pci
  ALSA: usb-audio: fix control-request direction
  ASoC: qcom: lpass-cpu: Use optional clk APIs
  ASoC: cs35l33: fix an error code in probe()
  ASoC: SOF: Intel: hda: don't send DAI_CONFIG IPC for older firmware
  ASoC: fsl: fix SND_SOC_IMX_RPMSG dependency
  ASoC: cs42l52: Minor tidy up of error paths
  ASoC: cs35l32: Add missing regmap use_single config
  ASoC: cs35l34: Add missing regmap use_single config
  ASoC: cs42l73: Add missing regmap use_single config
  ASoC: cs53l30: Add missing regmap use_single config
  ...
2021-05-28 08:47:50 -10:00
Linus Torvalds
8508b97ae2 Merge tag 'clang-features-v5.13-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux
Pull clang feature fixes from Kees Cook:

 - Correctly pass stack frame size checking under LTO (Nick Desaulniers)

 - Avoid CFI mismatches by checking initcall_t types (Marco Elver)

* tag 'clang-features-v5.13-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux:
  Makefile: LTO: have linker check -Wframe-larger-than
  init: verify that function is initcall_t at compile-time
2021-05-28 08:31:48 -10:00
Linus Torvalds
afdd14704d Merge tag 'mips-fixes_5.13_1' of git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux
Pull MIPS fixes from Thomas Bogendoerfer:

 - fix function/preempt trace hangs

 - a few build fixes

* tag 'mips-fixes_5.13_1' of git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux:
  MIPS: Fix kernel hang under FUNCTION_GRAPH_TRACER and PREEMPT_TRACER
  MIPS: ralink: export rt_sysc_membase for rt2880_wdt.c
  MIPS: launch.h: add include guard to prevent build errors
  MIPS: alchemy: xxs1500: add gpio-au1000.h header file
2021-05-28 08:24:13 -10:00
Paolo Bonzini
a3d2ec9d3c Merge tag 'kvmarm-fixes-5.13-2' of git://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm into HEAD
KVM/arm64 fixes for 5.13, take #2

- Another state update on exit to userspace fix
- Prevent the creation of mixed 32/64 VMs
2021-05-28 13:02:03 -04:00
Wanpeng Li
b35491e66c KVM: X86: Kill off ctxt->ud
ctxt->ud is consumed only by x86_decode_insn(), we can kill it off by
passing emulation_type to x86_decode_insn() and dropping ctxt->ud
altogether. Tracking that info in ctxt for literally one call is silly.

Suggested-by: Sean Christopherson <seanjc@google.com>
Signed-off-by: Wanpeng Li <wanpengli@tencent.com>
Reviewed-by: Sean Christopherson <seanjc@google.com>
Message-Id: <1622160097-37633-2-git-send-email-wanpengli@tencent.com>
2021-05-28 12:59:10 -04:00
Wanpeng Li
da6393cdd8 KVM: X86: Fix warning caused by stale emulation context
Reported by syzkaller:

  WARNING: CPU: 7 PID: 10526 at linux/arch/x86/kvm//x86.c:7621 x86_emulate_instruction+0x41b/0x510 [kvm]
  RIP: 0010:x86_emulate_instruction+0x41b/0x510 [kvm]
  Call Trace:
   kvm_mmu_page_fault+0x126/0x8f0 [kvm]
   vmx_handle_exit+0x11e/0x680 [kvm_intel]
   vcpu_enter_guest+0xd95/0x1b40 [kvm]
   kvm_arch_vcpu_ioctl_run+0x377/0x6a0 [kvm]
   kvm_vcpu_ioctl+0x389/0x630 [kvm]
   __x64_sys_ioctl+0x8e/0xd0
   do_syscall_64+0x3c/0xb0
   entry_SYSCALL_64_after_hwframe+0x44/0xae

Commit 4a1e10d5b5 ("KVM: x86: handle hardware breakpoints during emulation())
adds hardware breakpoints check before emulation the instruction and parts of
emulation context initialization, actually we don't have the EMULTYPE_NO_DECODE flag
here and the emulation context will not be reused. Commit c8848cee74 ("KVM: x86:
set ctxt->have_exception in x86_decode_insn()) triggers the warning because it
catches the stale emulation context has #UD, however, it is not during instruction
decoding which should result in EMULATION_FAILED. This patch fixes it by moving
the second part emulation context initialization into init_emulate_ctxt() and
before hardware breakpoints check. The ctxt->ud will be dropped by a follow-up
patch.

syzkaller source: https://syzkaller.appspot.com/x/repro.c?x=134683fdd00000

Reported-by: syzbot+71271244f206d17f6441@syzkaller.appspotmail.com
Fixes: 4a1e10d5b5 (KVM: x86: handle hardware breakpoints during emulation)
Signed-off-by: Wanpeng Li <wanpengli@tencent.com>
Reviewed-by: Sean Christopherson <seanjc@google.com>
Message-Id: <1622160097-37633-1-git-send-email-wanpengli@tencent.com>
2021-05-28 12:59:09 -04:00
Yuan Yao
e87e46d5f3 KVM: X86: Use kvm_get_linear_rip() in single-step and #DB/#BP interception
The kvm_get_linear_rip() handles x86/long mode cases well and has
better readability, __kvm_set_rflags() also use the paired
function kvm_is_linear_rip() to check the vcpu->arch.singlestep_rip
set in kvm_arch_vcpu_ioctl_set_guest_debug(), so change the
"CS.BASE + RIP" code in kvm_arch_vcpu_ioctl_set_guest_debug() and
handle_exception_nmi() to this one.

Signed-off-by: Yuan Yao <yuan.yao@intel.com>
Message-Id: <20210526063828.1173-1-yuan.yao@linux.intel.com>
Reviewed-by: Sean Christopherson <seanjc@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2021-05-28 12:57:53 -04:00