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get_user_pages_fast() can return zero in certain error paths. We should
handle that or else it means we accidentally return ERR_PTR(0) which is
NULL instead of an error pointer. The callers are not expecting that
and will crash with a NULL dereference.
Change-Id: I8ecf03cf8ddf3b248d765dee3cf0b634e9838678
Fixes: 033ddf12bcf5 ("tee: add register user memory")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org>
(cherry picked from commit 2490cdf6435b1d3cac0dbf710cd752487c67c296)
Signed-off-by: Victor Chong <victor.chong@linaro.org>
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In the case that shm->pages fails to allocate, the current exit
error path will try to put_page on a null shm->pages and cause
a null pointer dereference when accessing shm->pages[n]. Fix this
by only performing the put_page and kfree on shm->pages if it
is not null.
Detected by CoverityScan, CID#1463283 ("Dereference after null check")
Change-Id: I4874df9fce449834fdf9064c718c2d2517f69bc4
Fixes: 033ddf12bcf5 ("tee: add register user memory")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org>
(cherry picked from commit c94f31b526fe658c25dd2d07c90486a85437f01c)
Signed-off-by: Victor Chong <victor.chong@linaro.org>
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The function __tee_shm_alloc is local to the source and does
not need to be in global scope, so make it static.
Cleans up sparse warning:
symbol '__tee_shm_alloc' was not declared. Should it be static?
Change-Id: I39cc9afd601505dc7fdee1cfff1811c3582822f9
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org>
(cherry picked from commit 80ec6f5de60b6934f145b2f7e5369592bcab85f3)
Signed-off-by: Victor Chong <victor.chong@linaro.org>
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Checks the memory type of the pages to be registered as shared memory.
Only normal cached memory is allowed.
Change-Id: I8fc58e3ddc0ce94da996fde852268ae7350fcbba
Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org>
(cherry picked from commit cdbcf83d29c1bf2aaa65260e74beaac1bcdc231c)
Signed-off-by: Victor Chong <victor.chong@linaro.org>
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Adds a start argument to the shm_register callback to allow the callback
to check memory type of the passed pages.
Change-Id: I61457d60ca192637f8d986e2d6f8aeb153d2c484
Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org>
(cherry picked from commit 95ffe4ca43877eea176d7e95aa0d38bbdc3d2903)
Signed-off-by: Victor Chong <victor.chong@linaro.org>
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The optee driver includes the header files in an unusual order,
with asm/pgtable.h before the linux/*.h headers. For some reason
this seems to trigger a build failure:
drivers/tee/optee/call.c: In function 'optee_fill_pages_list':
include/asm-generic/memory_model.h:64:14: error: implicit declaration of function 'page_to_section'; did you mean '__nr_to_section'? [-Werror=implicit-function-declaration]
int __sec = page_to_section(__pg); \
drivers/tee/optee/call.c:494:15: note: in expansion of macro 'page_to_phys'
optee_page = page_to_phys(*pages) +
Let's just include linux/mm.h, which will then get the other
header implicitly.
Change-Id: I01a0a0cab15f132c9e0972a6b65bbdb08487fb82
Fixes: 3bb48ba5cd60 ("tee: optee: add page list manipulation functions")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
(cherry picked from commit f681e08f671a8e68b085ba66190b8661deab4d85)
Signed-off-by: Victor Chong <victor.chong@linaro.org>
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Now, when struct tee_shm is defined in public header,
we can inline small getter functions like this one.
Change-Id: I9aba40c18ec448c043ab0b31849e4d6429908371
Signed-off-by: Volodymyr Babchuk <vlad.babchuk@gmail.com>
Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org>
(cherry picked from commit ef8e08d24ca84846ce639b835ebd2f15a943f42b)
Signed-off-by: Victor Chong <victor.chong@linaro.org>
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We need to ensure that tee_context is present until last
shared buffer will be freed.
Change-Id: I0346e266f17b06af82144290d230029d0193a3d8
Signed-off-by: Volodymyr Babchuk <vlad.babchuk@gmail.com>
Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org>
(cherry picked from commit 217e0250cccb9e54d457991446cd3fab413085e1)
Signed-off-by: Victor Chong <victor.chong@linaro.org>
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Previous patches added various features that are needed for dynamic SHM.
Dynamic SHM allows Normal World to share any buffers with OP-TEE.
While original design suggested to use pre-allocated region (usually of
1M to 2M of size), this new approach allows to use all non-secure RAM for
command buffers, RPC allocations and TA parameters.
This patch checks capability OPTEE_SMC_SEC_CAP_DYNAMIC_SHM. If it was set
by OP-TEE, then kernel part of OP-TEE will use kernel page allocator
to allocate command buffers. Also it will set TEE_GEN_CAP_REG_MEM
capability to tell userspace that it supports shared memory registration.
Change-Id: If6b54bdd2aafaa4dabe2b0b31aa3116999eef14a
Signed-off-by: Volodymyr Babchuk <vlad.babchuk@gmail.com>
Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org>
(cherry picked from commit f58e236c9d665ad0af99c908de4a9b6f07e74dda)
Signed-off-by: Victor Chong <victor.chong@linaro.org>
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This is simple pool that uses kernel page allocator. This pool can be
used in case OP-TEE supports dynamic shared memory.
Change-Id: I816cd8ab0752915b29143f0c24e40de803975c59
Signed-off-by: Volodymyr Babchuk <vlad.babchuk@gmail.com>
Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org>
(cherry picked from commit abd135ba215c05ca84f9809e6047db25fc28b835)
Signed-off-by: Victor Chong <victor.chong@linaro.org>
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Those capabilities will be used in subsequent patches.
Change-Id: Iea89d2274a83d6e7b1fd864946a97d7427501fcd
Signed-off-by: Volodymyr Babchuk <vlad.babchuk@gmail.com>
Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org>
(cherry picked from commit d885cc5e0759fc19badadddb60a64344b551469b)
Signed-off-by: Victor Chong <victor.chong@linaro.org>
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With latest changes to OP-TEE we can use any buffers as a shared memory.
Thus, it is possible for supplicant to provide part of own memory
when OP-TEE asks to allocate a shared buffer.
This patch adds support for such feature into RPC handling code.
Now when OP-TEE asks supplicant to allocate shared buffer, supplicant
can use TEE_IOC_SHM_REGISTER to provide such buffer. RPC handler is
aware of this, so it will pass list of allocated pages to OP-TEE.
Change-Id: I01a9970ff377848416d002bf89936a8220354873
Signed-off-by: Volodymyr Babchuk <vlad.babchuk@gmail.com>
[jw: fix parenthesis alignment in free_pages_list()]
Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org>
(cherry picked from commit 53a107c812de3dd74707458aa751eb457718ff9e)
Signed-off-by: Victor Chong <victor.chong@linaro.org>
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Now, when client applications can register own shared buffers in OP-TEE,
we need to extend ABI for parameter passing to/from OP-TEE.
So, if OP-TEE core detects that parameter belongs to registered shared
memory, it will use corresponding parameter attribute.
Change-Id: Iac7907b49c5acc75806526951c77069ec23694cc
Signed-off-by: Volodymyr Babchuk <vlad.babchuk@gmail.com>
Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org>
(cherry picked from commit 64cf9d8a672e770fed85a65b5c6767fc0aa1473b)
Signed-off-by: Victor Chong <victor.chong@linaro.org>
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This change adds ops for shm_(un)register functions in tee interface.
Client application can use these functions to (un)register an own shared
buffer in OP-TEE address space. This allows zero copy data sharing between
Normal and Secure Worlds.
Please note that while those functions were added to optee code,
it does not report to userspace that those functions are available.
OP-TEE code does not set TEE_GEN_CAP_REG_MEM flag. This flag will be
enabled only after all other features of dynamic shared memory will be
implemented in subsequent patches. Of course user can ignore presence of
TEE_GEN_CAP_REG_MEM flag and try do call those functions. This is okay,
driver will register shared buffer in OP-TEE, but any attempts to use
this shared buffer will fail.
Change-Id: I9cd17ffcf306e02f1e0017b8ef0df835847c93b8
Signed-off-by: Volodymyr Babchuk <vlad.babchuk@gmail.com>
Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org>
(cherry picked from commit 06ca79179c4e00efe53cfe43456f1586f944f04f)
Signed-off-by: Victor Chong <victor.chong@linaro.org>
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These functions will be used to pass information about shared
buffers to OP-TEE. ABI between Linux and OP-TEE is defined
in optee_msg.h and optee_smc.h.
optee_msg.h defines OPTEE_MSG_ATTR_NONCONTIG attribute
for shared memory references and describes how such references
should be passed. Note that it uses 64-bit page addresses even
on 32 bit systems. This is done to support LPAE and to unify
interface.
Change-Id: I7cdee66cfacb3d3d1243864aecac5270a9d11c96
Signed-off-by: Volodymyr Babchuk <vlad.babchuk@gmail.com>
[jw: replacing uint64_t with u64 in optee_fill_pages_list()]
Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org>
(cherry picked from commit 3bb48ba5cd60f9685aa8f1ccd9b14a72e237c13f)
Signed-off-by: Victor Chong <victor.chong@linaro.org>
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There were changes in REE<->OP-TEE ABI recently.
Now ABI allows us to pass non-contiguous memory buffers as list of
pages to OP-TEE. This can be achieved by using new parameter attribute
OPTEE_MSG_ATTR_NONCONTIG.
OP-TEE also is able to use all non-secure RAM for shared buffers. This
new capability is enabled with OPTEE_SMC_SEC_CAP_DYNAMIC_SHM flag.
This patch adds necessary definitions to the protocol definition files at
Linux side.
Change-Id: I1a709ac6195292fdd06d37f2b28b4e18b3652137
Signed-off-by: Volodymyr Babchuk <vlad.babchuk@gmail.com>
Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org>
(cherry picked from commit de5c6dfc43daa59feb824505f80fe4591f8f8f85)
Signed-off-by: Victor Chong <victor.chong@linaro.org>
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In order to register a shared buffer in TEE, we need accessor
function that return list of pages for that buffer.
Change-Id: I4078da3e7fff7e44bb6478e297250458d66dd89d
Signed-off-by: Volodymyr Babchuk <vlad.babchuk@gmail.com>
Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org>
(cherry picked from commit e0c69ae8bfb500facebe1fa331f9400c216eaab0)
Signed-off-by: Victor Chong <victor.chong@linaro.org>
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These two function will be needed for shared memory registration in OP-TEE
Change-Id: Iccfbc063f90edd2f8a283bc0424d95e1f0874c8a
Signed-off-by: Volodymyr Babchuk <vlad.babchuk@gmail.com>
Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org>
(cherry picked from commit b25946ad951c013c31d0a0e82d2017004bdc8fed)
Signed-off-by: Victor Chong <victor.chong@linaro.org>
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Added new ioctl to allow users register own buffers as a shared memory.
Change-Id: If7f52f1d7c733d1d31de791523a07748e77fa202
Signed-off-by: Volodymyr Babchuk <vlad.babchuk@gmail.com>
[jw: moved tee_shm_is_registered() declaration]
[jw: added space after __tee_shm_alloc() implementation]
Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org>
(cherry picked from commit 033ddf12bcf5326b93bd604f50a7474a434a35f9)
Signed-off-by: Victor Chong <victor.chong@linaro.org>
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Makes creation of shm pools more flexible by adding new more primitive
functions to allocate a shm pool. This makes it easier to add driver
specific shm pool management.
Change-Id: Ief7841b612e1f2ad67222f058bb6627ac9dcd41d
Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org>
Signed-off-by: Volodymyr Babchuk <vlad.babchuk@gmail.com>
(cherry picked from commit e2aca5d8928acb9cc9a87802b02102d4f9b9b596)
Signed-off-by: Victor Chong <victor.chong@linaro.org>
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Adds support for asynchronous supplicant requests, meaning that the
supplicant can process several requests in parallel or block in a
request for some time.
Change-Id: Iec1bc41d57aa3765f0d743c03bd7f35fcc45172b
Acked-by: Etienne Carriere <etienne.carriere@linaro.org>
Tested-by: Etienne Carriere <etienne.carriere@linaro.org> (b2260 pager=y/n)
Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org>
(cherry picked from commit 1647a5ac175490d7dac2e74532e85b6197fc74e9)
Signed-off-by: Victor Chong <victor.chong@linaro.org>
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Adds TEE_IOCTL_PARAM_ATTR_META which can be used to indicate meta
parameters when communicating with user space. These meta parameters can
be used by supplicant support multiple parallel requests at a time.
Change-Id: Id119468872ef96c941da0dfbbabed59e55366f12
Reviewed-by: Etienne Carriere <etienne.carriere@linaro.org>
Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org>
(cherry picked from commit f2aa97240c84b8f258710e297ba60048bd9c153e)
Signed-off-by: Victor Chong <victor.chong@linaro.org>
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Change-Id: I105eb7c113b68695c28123f520d8d9b07a1fcda4
Reviewed-by: Etienne Carriere <etienne.carriere@linaro.org>
Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org>
(cherry picked from commit 84debcc53533f162bf11f24e6a503d227c175cbe)
Signed-off-by: Victor Chong <victor.chong@linaro.org>
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Due to the merge of 4.4.116, there is a build error in f2fs due to
inode_nohighmem() being defined twice. This patch removes the f2fs-only
instance of the function as it's no longer needed.
Bug: 72320324
Change-Id: If14f1e167498bceb2e434420181923952f7748ba
Cc: Jaegeuk Kim <jaegeuk@google.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
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Changes in 4.4.116
powerpc/bpf/jit: Disable classic BPF JIT on ppc64le
powerpc/64: Fix flush_(d|i)cache_range() called from modules
powerpc: Fix VSX enabling/flushing to also test MSR_FP and MSR_VEC
powerpc: Simplify module TOC handling
powerpc/pseries: Add H_GET_CPU_CHARACTERISTICS flags & wrapper
powerpc/64: Add macros for annotating the destination of rfid/hrfid
powerpc/64s: Simple RFI macro conversions
powerpc/64: Convert fast_exception_return to use RFI_TO_USER/KERNEL
powerpc/64: Convert the syscall exit path to use RFI_TO_USER/KERNEL
powerpc/64s: Convert slb_miss_common to use RFI_TO_USER/KERNEL
powerpc/64s: Add support for RFI flush of L1-D cache
powerpc/64s: Support disabling RFI flush with no_rfi_flush and nopti
powerpc/pseries: Query hypervisor for RFI flush settings
powerpc/powernv: Check device-tree for RFI flush settings
powerpc/64s: Wire up cpu_show_meltdown()
powerpc/64s: Allow control of RFI flush via debugfs
ASoC: pcm512x: add missing MODULE_DESCRIPTION/AUTHOR/LICENSE
usbip: vhci_hcd: clear just the USB_PORT_STAT_POWER bit
usbip: fix 3eee23c3ec14 tcp_socket address still in the status file
net: cdc_ncm: initialize drvflags before usage
ASoC: simple-card: Fix misleading error message
ASoC: rsnd: don't call free_irq() on Parent SSI
ASoC: rsnd: avoid duplicate free_irq()
drm: rcar-du: Use the VBK interrupt for vblank events
drm: rcar-du: Fix race condition when disabling planes at CRTC stop
x86/asm: Fix inline asm call constraints for GCC 4.4
ip6mr: fix stale iterator
net: igmp: add a missing rcu locking section
qlcnic: fix deadlock bug
r8169: fix RTL8168EP take too long to complete driver initialization.
tcp: release sk_frag.page in tcp_disconnect
vhost_net: stop device during reset owner
media: soc_camera: soc_scale_crop: add missing MODULE_DESCRIPTION/AUTHOR/LICENSE
KEYS: encrypted: fix buffer overread in valid_master_desc()
don't put symlink bodies in pagecache into highmem
crypto: tcrypt - fix S/G table for test_aead_speed()
x86/microcode/AMD: Do not load when running on a hypervisor
x86/microcode: Do the family check first
powerpc/pseries: include linux/types.h in asm/hvcall.h
cifs: Fix missing put_xid in cifs_file_strict_mmap
cifs: Fix autonegotiate security settings mismatch
CIFS: zero sensitive data when freeing
dmaengine: dmatest: fix container_of member in dmatest_callback
x86/kaiser: fix build error with KASAN && !FUNCTION_GRAPH_TRACER
kaiser: fix compile error without vsyscall
netfilter: nf_queue: Make the queue_handler pernet
posix-timer: Properly check sigevent->sigev_notify
usb: gadget: uvc: Missing files for configfs interface
sched/rt: Use container_of() to get root domain in rto_push_irq_work_func()
sched/rt: Up the root domain ref count when passing it around via IPIs
dccp: CVE-2017-8824: use-after-free in DCCP code
media: dvb-usb-v2: lmedm04: Improve logic checking of warm start
media: dvb-usb-v2: lmedm04: move ts2020 attach to dm04_lme2510_tuner
mtd: cfi: convert inline functions to macros
mtd: nand: brcmnand: Disable prefetch by default
mtd: nand: Fix nand_do_read_oob() return value
mtd: nand: sunxi: Fix ECC strength choice
ubi: block: Fix locking for idr_alloc/idr_remove
nfs/pnfs: fix nfs_direct_req ref leak when i/o falls back to the mds
NFS: Add a cond_resched() to nfs_commit_release_pages()
NFS: commit direct writes even if they fail partially
NFS: reject request for id_legacy key without auxdata
kernfs: fix regression in kernfs_fop_write caused by wrong type
ahci: Annotate PCI ids for mobile Intel chipsets as such
ahci: Add PCI ids for Intel Bay Trail, Cherry Trail and Apollo Lake AHCI
ahci: Add Intel Cannon Lake PCH-H PCI ID
crypto: hash - introduce crypto_hash_alg_has_setkey()
crypto: cryptd - pass through absence of ->setkey()
crypto: poly1305 - remove ->setkey() method
nsfs: mark dentry with DCACHE_RCUACCESS
media: v4l2-ioctl.c: don't copy back the result for -ENOTTY
vb2: V4L2_BUF_FLAG_DONE is set after DQBUF
media: v4l2-compat-ioctl32.c: add missing VIDIOC_PREPARE_BUF
media: v4l2-compat-ioctl32.c: fix the indentation
media: v4l2-compat-ioctl32.c: move 'helper' functions to __get/put_v4l2_format32
media: v4l2-compat-ioctl32.c: avoid sizeof(type)
media: v4l2-compat-ioctl32.c: copy m.userptr in put_v4l2_plane32
media: v4l2-compat-ioctl32.c: fix ctrl_is_pointer
media: v4l2-compat-ioctl32.c: make ctrl_is_pointer work for subdevs
media: v4l2-compat-ioctl32: Copy v4l2_window->global_alpha
media: v4l2-compat-ioctl32.c: copy clip list in put_v4l2_window32
media: v4l2-compat-ioctl32.c: drop pr_info for unknown buffer type
media: v4l2-compat-ioctl32.c: don't copy back the result for certain errors
media: v4l2-compat-ioctl32.c: refactor compat ioctl32 logic
crypto: caam - fix endless loop when DECO acquire fails
arm: KVM: Fix SMCCC handling of unimplemented SMC/HVC calls
KVM: nVMX: Fix races when sending nested PI while dest enters/leaves L2
watchdog: imx2_wdt: restore previous timeout after suspend+resume
media: ts2020: avoid integer overflows on 32 bit machines
media: cxusb, dib0700: ignore XC2028_I2C_FLUSH
kernel/async.c: revert "async: simplify lowest_in_progress()"
HID: quirks: Fix keyboard + touchpad on Toshiba Click Mini not working
Bluetooth: btsdio: Do not bind to non-removable BCM43341
Revert "Bluetooth: btusb: fix QCA Rome suspend/resume"
Bluetooth: btusb: Restore QCA Rome suspend/resume fix with a "rewritten" version
signal/openrisc: Fix do_unaligned_access to send the proper signal
signal/sh: Ensure si_signo is initialized in do_divide_error
alpha: fix crash if pthread_create races with signal delivery
alpha: fix reboot on Avanti platform
xtensa: fix futex_atomic_cmpxchg_inatomic
EDAC, octeon: Fix an uninitialized variable warning
pktcdvd: Fix pkt_setup_dev() error path
btrfs: Handle btrfs_set_extent_delalloc failure in fixup worker
nvme: Fix managing degraded controllers
ACPI: sbshc: remove raw pointer from printk() message
ovl: fix failure to fsync lower dir
mn10300/misalignment: Use SIGSEGV SEGV_MAPERR to report a failed user copy
ftrace: Remove incorrect setting of glob search field
Linux 4.4.116
Change-Id: Id000cb8d59b74de063902e9ad24dd07fe1b1694b
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
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commit 7b6586562708d2b3a04fe49f217ddbadbbbb0546 upstream.
__unregister_ftrace_function_probe() will incorrectly parse the glob filter
because it resets the search variable that was setup by filter_parse_regex().
Al Viro reported this:
After that call of filter_parse_regex() we could have func_g.search not
equal to glob only if glob started with '!' or '*'. In the former case
we would've buggered off with -EINVAL (not = 1). In the latter we
would've set func_g.search equal to glob + 1, calculated the length of
that thing in func_g.len and proceeded to reset func_g.search back to
glob.
Suppose the glob is e.g. *foo*. We end up with
func_g.type = MATCH_MIDDLE_ONLY;
func_g.len = 3;
func_g.search = "*foo";
Feeding that to ftrace_match_record() will not do anything sane - we
will be looking for names containing "*foo" (->len is ignored for that
one).
Link: http://lkml.kernel.org/r/20180127031706.GE13338@ZenIV.linux.org.uk
Fixes: 3ba009297149f ("ftrace: Introduce ftrace_glob structure")
Reviewed-by: Dmitry Safonov <0x7f454c46@gmail.com>
Reviewed-by: Masami Hiramatsu <mhiramat@kernel.org>
Reported-by: Al Viro <viro@ZenIV.linux.org.uk>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 6ac1dc736b323011a55ecd1fc5897c24c4f77cbd upstream.
Setting si_code to 0 is the same a setting si_code to SI_USER which is definitely
not correct. With si_code set to SI_USER si_pid and si_uid will be copied to
userspace instead of si_addr. Which is very wrong.
So fix this by using a sensible si_code (SEGV_MAPERR) for this failure.
Fixes: b920de1b77b7 ("mn10300: add the MN10300/AM33 architecture to the kernel")
Cc: David Howells <dhowells@redhat.com>
Cc: Masakazu Urade <urade.masakazu@jp.panasonic.com>
Cc: Koichi Yasutake <yasutake.koichi@jp.panasonic.com>
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit d796e77f1dd541fe34481af2eee6454688d13982 upstream.
As a writable mount, it is not expected for overlayfs to return
EINVAL/EROFS for fsync, even if dir/file is not changed.
This commit fixes the case of fsync of directory, which is easier to
address, because overlayfs already implements fsync file operation for
directories.
The problem reported by Raphael is that new PostgreSQL 10.0 with a
database in overlayfs where lower layer in squashfs fails to start.
The failure is due to fsync error, when PostgreSQL does fsync on all
existing db directories on startup and a specific directory exists
lower layer with no changes.
Reported-by: Raphael Hertzog <raphael@ouaza.com>
Signed-off-by: Amir Goldstein <amir73il@gmail.com>
Tested-by: Raphaël Hertzog <hertzog@debian.org>
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 43cdd1b716b26f6af16da4e145b6578f98798bf6 upstream.
There's no need to be printing a raw kernel pointer to the kernel log at
every boot. So just remove it, and change the whole message to use the
correct dev_info() call at the same time.
Reported-by: Wang Qize <wang_qize@venustech.com.cn>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 5bae7f73d378a986 upstream
Upstream is a near rewrite of the async nvme probe that ultimately didn't
even cleanly merge in 4.5. This patch is a much smaller change targeted
to the regression introduced in 4.4.
If a controller is in a degraded mode that needs admin assistence to
recover, we need to leave the controller running. We just want to disable
namespace access without shuting the controller down.
Fixes: 3cf519b5a8d4("nvme: merge nvme_dev_start, nvme_dev_resume and nvme_async_probe")
Signed-off-by: Keith Busch <keith.busch@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit f3038ee3a3f1017a1cbe9907e31fa12d366c5dcb upstream.
This function was introduced by 247e743cbe6e ("Btrfs: Use async helpers
to deal with pages that have been improperly dirtied") and it didn't do
any error handling then. This function might very well fail in ENOMEM
situation, yet it's not handled, this could lead to inconsistent state.
So let's handle the failure by setting the mapping error bit.
Signed-off-by: Nikolay Borisov <nborisov@suse.com>
Reviewed-by: Qu Wenruo <wqu@suse.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 5a0ec388ef0f6e33841aeb810d7fa23f049ec4cd upstream.
Commit 523e1d399ce0 ("block: make gendisk hold a reference to its queue")
modified add_disk() and disk_release() but did not update any of the
error paths that trigger a put_disk() call after disk->queue has been
assigned. That introduced the following behavior in the pktcdvd driver
if pkt_new_dev() fails:
Kernel BUG at 00000000e98fd882 [verbose debug info unavailable]
Since disk_release() calls blk_put_queue() anyway if disk->queue != NULL,
fix this by removing the blk_cleanup_queue() call from the pkt_setup_dev()
error path.
Fixes: commit 523e1d399ce0 ("block: make gendisk hold a reference to its queue")
Signed-off-by: Bart Van Assche <bart.vanassche@wdc.com>
Cc: Tejun Heo <tj@kernel.org>
Cc: Maciej S. Szmigiero <mail@maciej.szmigiero.name>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 544e92581a2ac44607d7cc602c6b54d18656f56d upstream.
Fix an uninitialized variable warning in the Octeon EDAC driver, as seen
in MIPS cavium_octeon_defconfig builds since v4.14 with Codescape GNU
Tools 2016.05-03:
drivers/edac/octeon_edac-lmc.c In function ‘octeon_lmc_edac_poll_o2’:
drivers/edac/octeon_edac-lmc.c:87:24: warning: ‘((long unsigned int*)&int_reg)[1]’ may \
be used uninitialized in this function [-Wmaybe-uninitialized]
if (int_reg.s.sec_err || int_reg.s.ded_err) {
^
Iinitialise the whole int_reg variable to zero before the conditional
assignments in the error injection case.
Signed-off-by: James Hogan <jhogan@kernel.org>
Acked-by: David Daney <david.daney@cavium.com>
Cc: linux-edac <linux-edac@vger.kernel.org>
Cc: linux-mips@linux-mips.org
Fixes: 1bc021e81565 ("EDAC: Octeon: Add error injection support")
Link: http://lkml.kernel.org/r/20171113161206.20990-1-james.hogan@mips.com
Signed-off-by: Borislav Petkov <bp@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit ca47480921587ae30417dd234a9f79af188e3666 upstream.
Return 0 if the operation was successful, not the userspace memory
value. Check that userspace value equals passed oldval, not itself.
Don't update *uval if the value wasn't read from userspace memory.
This fixes process hang due to infinite loop in futex_lock_pi.
It also fixes a bunch of glibc tests nptl/tst-mutexpi*.
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 55fc633c41a08ce9244ff5f528f420b16b1e04d6 upstream.
We need to define NEED_SRM_SAVE_RESTORE on the Avanti, otherwise we get
machine check exception when attempting to reboot the machine.
Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Signed-off-by: Matt Turner <mattst88@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 21ffceda1c8b3807615c40d440d7815e0c85d366 upstream.
On alpha, a process will crash if it attempts to start a thread and a
signal is delivered at the same time. The crash can be reproduced with
this program: https://cygwin.com/ml/cygwin/2014-11/msg00473.html
The reason for the crash is this:
* we call the clone syscall
* we go to the function copy_process
* copy process calls copy_thread_tls, it is a wrapper around copy_thread
* copy_thread sets the tls pointer: childti->pcb.unique = regs->r20
* copy_thread sets regs->r20 to zero
* we go back to copy_process
* copy process checks "if (signal_pending(current))" and returns
-ERESTARTNOINTR
* the clone syscall is restarted, but this time, regs->r20 is zero, so
the new thread is created with zero tls pointer
* the new thread crashes in start_thread when attempting to access tls
The comment in the code says that setting the register r20 is some
compatibility with OSF/1. But OSF/1 doesn't use the CLONE_SETTLS flag, so
we don't have to zero r20 if CLONE_SETTLS is set. This patch fixes the bug
by zeroing regs->r20 only if CLONE_SETTLS is not set.
Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Signed-off-by: Matt Turner <mattst88@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 0e88bb002a9b2ee8cc3cc9478ce2dc126f849696 upstream.
Set si_signo.
Cc: Yoshinori Sato <ysato@users.sourceforge.jp>
Cc: Rich Felker <dalias@libc.org>
Cc: Paul Mundt <lethal@linux-sh.org>
Cc: linux-sh@vger.kernel.org
Fixes: 0983b31849bb ("sh: Wire up division and address error exceptions on SH-2A.")
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 500d58300571b6602341b041f97c082a461ef994 upstream.
While reviewing the signal sending on openrisc the do_unaligned_access
function stood out because it is obviously wrong. A comment about an
si_code set above when actually si_code is never set. Leading to a
random si_code being sent to userspace in the event of an unaligned
access.
Looking further SIGBUS BUS_ADRALN is the proper pair of signal and
si_code to send for an unaligned access. That is what other
architectures do and what is required by posix.
Given that do_unaligned_access is broken in a way that no one can be
relying on it on openrisc fix the code to just do the right thing.
Fixes: 769a8a96229e ("OpenRISC: Traps")
Cc: Jonas Bonn <jonas@southpole.se>
Cc: Stefan Kristiansson <stefan.kristiansson@saunalahti.fi>
Cc: Stafford Horne <shorne@gmail.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: openrisc@lists.librecores.org
Acked-by: Stafford Horne <shorne@gmail.com>
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 61f5acea8737d9b717fcc22bb6679924f3c82b98 upstream.
Commit 7d06d5895c15 ("Revert "Bluetooth: btusb: fix QCA...suspend/resume"")
removed the setting of the BTUSB_RESET_RESUME quirk for QCA Rome devices,
instead favoring adding USB_QUIRK_RESET_RESUME quirks in usb/core/quirks.c.
This was done because the DIY BTUSB_RESET_RESUME reset-resume handling
has several issues (see the original commit message). An added advantage
of moving over to the USB-core reset-resume handling is that it also
disables autosuspend for these devices, which is similarly broken on these.
But there are 2 issues with this approach:
1) It leaves the broken DIY BTUSB_RESET_RESUME code in place for Realtek
devices.
2) Sofar only 2 of the 10 QCA devices known to the btusb code have been
added to usb/core/quirks.c and if we fix the Realtek case the same way
we need to add an additional 14 entries. So in essence we need to
duplicate a large part of the usb_device_id table in btusb.c in
usb/core/quirks.c and manually keep them in sync.
This commit instead restores setting a reset-resume quirk for QCA devices
in the btusb.c code, avoiding the duplicate usb_device_id table problem.
This commit avoids the problems with the original DIY BTUSB_RESET_RESUME
code by simply setting the USB_QUIRK_RESET_RESUME quirk directly on the
usb_device.
This commit also moves the BTUSB_REALTEK case over to directly setting the
USB_QUIRK_RESET_RESUME on the usb_device and removes the now unused
BTUSB_RESET_RESUME code.
BugLink: https://bugzilla.redhat.com/show_bug.cgi?id=1514836
Fixes: 7d06d5895c15 ("Revert "Bluetooth: btusb: fix QCA...suspend/resume"")
Cc: Leif Liddy <leif.linux@gmail.com>
Cc: Matthias Kaehlcke <mka@chromium.org>
Cc: Brian Norris <briannorris@chromium.org>
Cc: Daniel Drake <drake@endlessm.com>
Cc: Kai-Heng Feng <kai.heng.feng@canonical.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 7d06d5895c159f64c46560dc258e553ad8670fe0 upstream.
This reverts commit fd865802c66bc451dc515ed89360f84376ce1a56.
This commit causes a regression on some QCA ROME chips. The USB device
reset happens in btusb_open(), hence firmware loading gets interrupted.
Furthermore, this commit stops working after commit
("a0085f2510e8976614ad8f766b209448b385492f Bluetooth: btusb: driver to
enable the usb-wakeup feature"). Reset-resume quirk only gets enabled in
btusb_suspend() when it's not a wakeup source.
If we really want to reset the USB device, we need to do it before
btusb_open(). Let's handle it in drivers/usb/core/quirks.c.
Cc: Leif Liddy <leif.linux@gmail.com>
Cc: Matthias Kaehlcke <mka@chromium.org>
Cc: Brian Norris <briannorris@chromium.org>
Cc: Daniel Drake <drake@endlessm.com>
Signed-off-by: Kai-Heng Feng <kai.heng.feng@canonical.com>
Reviewed-by: Brian Norris <briannorris@chromium.org>
Tested-by: Brian Norris <briannorris@chromium.org>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit b4cdaba274247c9c841c6a682c08fa91fb3aa549 upstream.
BCM43341 devices soldered onto the PCB (non-removable) always (AFAICT)
use an UART connection for bluetooth. But they also advertise btsdio
support on their 3th sdio function, this causes 2 problems:
1) A non functioning BT HCI getting registered
2) Since the btsdio driver does not have suspend/resume callbacks,
mmc_sdio_pre_suspend will return -ENOSYS, causing mmc_pm_notify()
to react as if the SDIO-card is removed and since the slot is
marked as non-removable it will never get detected as inserted again.
Which results in wifi no longer working after a suspend/resume.
This commit fixes both by making btsdio ignore BCM43341 devices
when connected to a slot which is marked non-removable.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit edfc3722cfef4217c7fe92b272cbe0288ba1ff57 upstream.
The Toshiba Click Mini uses an i2c attached keyboard/touchpad combo
(single i2c_hid device for both) which has a vid:pid of 04F3:0401,
which is also used by a bunch of Elan touchpads which are handled by the
drivers/input/mouse/elan_i2c driver, but that driver deals with pure
touchpads and does not work for a combo device such as the one on the
Toshiba Click Mini.
The combo on the Mini has an ACPI id of ELAN0800, which is not claimed
by the elan_i2c driver, so check for that and if it is found do not ignore
the device. This fixes the keyboard/touchpad combo on the Mini not working
(although with the touchpad in mouse emulation mode).
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 4f7e988e63e336827f4150de48163bed05d653bd upstream.
This reverts commit 92266d6ef60c ("async: simplify lowest_in_progress()")
which was simply wrong: In the case where domain is NULL, we now use the
wrong offsetof() in the list_first_entry macro, so we don't actually
fetch the ->cookie value, but rather the eight bytes located
sizeof(struct list_head) further into the struct async_entry.
On 64 bit, that's the data member, while on 32 bit, that's a u64 built
from func and data in some order.
I think the bug happens to be harmless in practice: It obviously only
affects callers which pass a NULL domain, and AFAICT the only such
caller is
async_synchronize_full() ->
async_synchronize_full_domain(NULL) ->
async_synchronize_cookie_domain(ASYNC_COOKIE_MAX, NULL)
and the ASYNC_COOKIE_MAX means that in practice we end up waiting for
the async_global_pending list to be empty - but it would break if
somebody happened to pass (void*)-1 as the data element to
async_schedule, and of course also if somebody ever does a
async_synchronize_cookie_domain(, NULL) with a "finite" cookie value.
Maybe the "harmless in practice" means this isn't -stable material. But
I'm not completely confident my quick git grep'ing is enough, and there
might be affected code in one of the earlier kernels that has since been
removed, so I'll leave the decision to the stable guys.
Link: http://lkml.kernel.org/r/20171128104938.3921-1-linux@rasmusvillemoes.dk
Fixes: 92266d6ef60c "async: simplify lowest_in_progress()"
Signed-off-by: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Acked-by: Tejun Heo <tj@kernel.org>
Cc: Arjan van de Ven <arjan@linux.intel.com>
Cc: Adam Wallis <awallis@codeaurora.org>
Cc: Lai Jiangshan <laijs@cn.fujitsu.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 9893b905e743ded332575ca04486bd586c0772f7 upstream.
The XC2028_I2C_FLUSH only needs to be implemented on a few
devices. Others can safely ignore it.
That prevents filling the dmesg with lots of messages like:
dib0700: stk7700ph_xc3028_callback: unknown command 2, arg 0
Fixes: 4d37ece757a8 ("[media] tuner/xc2028: Add I2C flush callback")
Reported-by: Enrico Mioso <mrkiko.rs@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 81742be14b6a90c9fd0ff6eb4218bdf696ad8e46 upstream.
Before this patch, when compiled for arm32, the signal strength
were reported as:
Lock (0x1f) Signal= 4294908.66dBm C/N= 12.79dB
Because of a 32 bit integer overflow. After it, it is properly
reported as:
Lock (0x1f) Signal= -58.64dBm C/N= 12.79dB
Fixes: 0f91c9d6bab9 ("[media] TS2020: Calculate tuner gain correctly")
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 0be267255cef64e1c58475baa7b25568355a3816 upstream.
When the watchdog device is suspended, its timeout is set to the maximum
value. During resume, the previously set timeout should be restored.
This does not work at the moment.
The suspend function calls
imx2_wdt_set_timeout(wdog, IMX2_WDT_MAX_TIME);
and resume reverts this by calling
imx2_wdt_set_timeout(wdog, wdog->timeout);
However, imx2_wdt_set_timeout() updates wdog->timeout. Therefore,
wdog->timeout is set to IMX2_WDT_MAX_TIME when we enter the resume
function.
Fix this by adding a new function __imx2_wdt_set_timeout() which
only updates the hardware settings. imx2_wdt_set_timeout() now calls
__imx2_wdt_set_timeout() and then saves the new timeout to
wdog->timeout.
During suspend, we call __imx2_wdt_set_timeout() directly so that
wdog->timeout won't be updated and we can restore the previous value
during resume. This approach makes wdog->timeout different from the
actual setting in the hardware which is usually not a good thing.
However, the two differ only while we're suspended and no kernel code is
running, so it should be ok in this case.
Signed-off-by: Martin Kaiser <martin@kaiser.cx>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 6b6977117f50d60455ace86b2d256f6fb4f3de05 upstream.
Consider the following scenario:
1. CPU A calls vmx_deliver_nested_posted_interrupt() to send an IPI
to CPU B via virtual posted-interrupt mechanism.
2. CPU B is currently executing L2 guest.
3. vmx_deliver_nested_posted_interrupt() calls
kvm_vcpu_trigger_posted_interrupt() which will note that
vcpu->mode == IN_GUEST_MODE.
4. Assume that before CPU A sends the physical POSTED_INTR_NESTED_VECTOR
IPI, CPU B exits from L2 to L0 during event-delivery
(valid IDT-vectoring-info).
5. CPU A now sends the physical IPI. The IPI is received in host and
it's handler (smp_kvm_posted_intr_nested_ipi()) does nothing.
6. Assume that before CPU A sets pi_pending=true and KVM_REQ_EVENT,
CPU B continues to run in L0 and reach vcpu_enter_guest(). As
KVM_REQ_EVENT is not set yet, vcpu_enter_guest() will continue and resume
L2 guest.
7. At this point, CPU A sets pi_pending=true and KVM_REQ_EVENT but
it's too late! CPU B already entered L2 and KVM_REQ_EVENT will only be
consumed at next L2 entry!
Another scenario to consider:
1. CPU A calls vmx_deliver_nested_posted_interrupt() to send an IPI
to CPU B via virtual posted-interrupt mechanism.
2. Assume that before CPU A calls kvm_vcpu_trigger_posted_interrupt(),
CPU B is at L0 and is about to resume into L2. Further assume that it is
in vcpu_enter_guest() after check for KVM_REQ_EVENT.
3. At this point, CPU A calls kvm_vcpu_trigger_posted_interrupt() which
will note that vcpu->mode != IN_GUEST_MODE. Therefore, do nothing and
return false. Then, will set pi_pending=true and KVM_REQ_EVENT.
4. Now CPU B continue and resumes into L2 guest without processing
the posted-interrupt until next L2 entry!
To fix both issues, we just need to change
vmx_deliver_nested_posted_interrupt() to set pi_pending=true and
KVM_REQ_EVENT before calling kvm_vcpu_trigger_posted_interrupt().
It will fix the first scenario by chaging step (6) to note that
KVM_REQ_EVENT and pi_pending=true and therefore process
nested posted-interrupt.
It will fix the second scenario by two possible ways:
1. If kvm_vcpu_trigger_posted_interrupt() is called while CPU B has changed
vcpu->mode to IN_GUEST_MODE, physical IPI will be sent and will be received
when CPU resumes into L2.
2. If kvm_vcpu_trigger_posted_interrupt() is called while CPU B hasn't yet
changed vcpu->mode to IN_GUEST_MODE, then after CPU B will change
vcpu->mode it will call kvm_request_pending() which will return true and
therefore force another round of vcpu_enter_guest() which will note that
KVM_REQ_EVENT and pi_pending=true and therefore process nested
posted-interrupt.
Fixes: 705699a13994 ("KVM: nVMX: Enable nested posted interrupt processing")
Signed-off-by: Liran Alon <liran.alon@oracle.com>
Reviewed-by: Nikita Leshenko <nikita.leshchenko@oracle.com>
Reviewed-by: Krish Sadhukhan <krish.sadhukhan@oracle.com>
[Add kvm_vcpu_kick to also handle the case where L1 doesn't intercept L2 HLT
and L2 executes HLT instruction. - Paolo]
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Radim Krčmář <rkrcmar@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 20e8175d246e9f9deb377f2784b3e7dfb2ad3e86 upstream.
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.
Tested-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 225ece3e7dad4cfc44cca38ce7a3a80f255ea8f1 upstream.
In case DECO0 cannot be acquired - i.e. run_descriptor_deco0() fails
with -ENODEV, caam_probe() enters an endless loop:
run_descriptor_deco0
ret -ENODEV
-> instantiate_rng
-ENODEV, overwritten by -EAGAIN
ret -EAGAIN
-> caam_probe
-EAGAIN results in endless loop
It turns out the error path in instantiate_rng() is incorrect,
the checks are done in the wrong order.
Fixes: 1005bccd7a4a6 ("crypto: caam - enable instantiation of all RNG4 state handles")
Reported-by: Bryan O'Donoghue <pure.logic@nexus-software.ie>
Suggested-by: Auer Lukas <lukas.auer@aisec.fraunhofer.de>
Signed-off-by: Horia Geantă <horia.geanta@nxp.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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