allows a malicious user to set an encryption policy on an empty
directory which they do not own.
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v2
iQEcBAABCAAGBQJX05q4AAoJEPL5WVaVDYGjOywH/AyXoo4d1/5H/XTakNYPxYIW
vtBOXciHai4ZE9RygL3gdZuiyY9bTx2sc80So3KboNUdiuOJBPnuAkOQMr973UCI
yGW3eP/RYGA1XQUbtOyFvzJMIZLKXV2ytakFeRz+m1CQF2F5F7/prKQB2j4sWHff
JigAC67LlZSiz7L8SqtPG4uG1C8K/YEorf14dG6k37fMwE/AaBYXxkyc7MmHIKeW
Tils0ZZcTK0U0udNSel/jRSS/qENEuLvKhFsMAlIDrCETVMidCvv2OAcT0z0z5Ln
v+Oq0Xfutd12nfb95LUfROMtTzrtILYC2qNfDChOoFtlU8UyKmY+WT1GfYUiy8g=
=ahmA
-----END PGP SIGNATURE-----
Merge tag 'for_linus_stable' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4
Pull fscrypto fixes fromTed Ts'o:
"Fix some brown-paper-bag bugs for fscrypto, including one one which
allows a malicious user to set an encryption policy on an empty
directory which they do not own"
* tag 'for_linus_stable' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4:
fscrypto: require write access to mount to set encryption policy
fscrypto: only allow setting encryption policy on directories
fscrypto: add authorization check for setting encryption policy
Alexander hit the WARN_ON_ONCE(!event) on his Skylake while running
the perf fuzzer.
This means the PEBSv3 record included a status bit for an inactive
event, something that _should_ not happen.
Move the code that filters the status bits against our known PEBS
events up a spot to guarantee we only deal with events we know about.
Further add "continue" statements to the WARN_ON_ONCE()s such that
we'll not die nor generate silly events in case we ever do hit them
again.
Reported-by: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Tested-by: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Kan Liang <kan.liang@intel.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Vince Weaver <vince@deater.net>
Cc: stable@vger.kernel.org
Fixes: a3d86542de ("perf/x86/intel/pebs: Add PEBSv3 decoding")
Signed-off-by: Ingo Molnar <mingo@kernel.org>
At the moment, intel_bts will WARN() out if there is more than one
event writing to the same ring buffer, via SET_OUTPUT, and will only
send data from one event to a buffer.
There is no reason to have this warning in, so kill it.
Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Arnaldo Carvalho de Melo <acme@infradead.org>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: vince@deater.net
Link: http://lkml.kernel.org/r/20160906132353.19887-6-alexander.shishkin@linux.intel.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Since BTS doesn't have a dedicated PMI status bit, the driver needs to
take extra care to check for the condition that triggers it to avoid
spurious NMI warnings.
Regardless of the local BTS context state, the only way of knowing that
the NMI is ours is to compare the write pointer against the interrupt
threshold.
Reported-by: Vince Weaver <vincent.weaver@maine.edu>
Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Arnaldo Carvalho de Melo <acme@infradead.org>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: vince@deater.net
Link: http://lkml.kernel.org/r/20160906132353.19887-5-alexander.shishkin@linux.intel.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
The intel_bts driver is using a CPU-local 'started' variable to order
callbacks and PMIs and make sure that AUX transactions don't get messed
up. However, the ordering rules in regard to this variable is a complete
mess, which recently resulted in perf_fuzzer-triggered warnings and
panics.
The general ordering rule that is patch is enforcing is that this
cpu-local variable be set only when the cpu-local AUX transaction is
active; consequently, this variable is to be checked before the AUX
related bits can be touched.
Reported-by: Vince Weaver <vincent.weaver@maine.edu>
Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Arnaldo Carvalho de Melo <acme@infradead.org>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: vince@deater.net
Link: http://lkml.kernel.org/r/20160906132353.19887-4-alexander.shishkin@linux.intel.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
The order of accesses to ring buffer's aux_mmap_count and aux_refcount
has to be preserved across the users, namely perf_mmap_close() and
perf_aux_output_begin(), otherwise the inversion can result in the latter
holding the last reference to the aux buffer and subsequently free'ing
it in atomic context, triggering a warning.
> ------------[ cut here ]------------
> WARNING: CPU: 0 PID: 257 at kernel/events/ring_buffer.c:541 __rb_free_aux+0x11a/0x130
> CPU: 0 PID: 257 Comm: stopbug Not tainted 4.8.0-rc1+ #2596
> Call Trace:
> [<ffffffff810f3e0b>] __warn+0xcb/0xf0
> [<ffffffff810f3f3d>] warn_slowpath_null+0x1d/0x20
> [<ffffffff8121182a>] __rb_free_aux+0x11a/0x130
> [<ffffffff812127a8>] rb_free_aux+0x18/0x20
> [<ffffffff81212913>] perf_aux_output_begin+0x163/0x1e0
> [<ffffffff8100c33a>] bts_event_start+0x3a/0xd0
> [<ffffffff8100c42d>] bts_event_add+0x5d/0x80
> [<ffffffff81203646>] event_sched_in.isra.104+0xf6/0x2f0
> [<ffffffff8120652e>] group_sched_in+0x6e/0x190
> [<ffffffff8120694e>] ctx_sched_in+0x2fe/0x5f0
> [<ffffffff81206ca0>] perf_event_sched_in+0x60/0x80
> [<ffffffff81206d1b>] ctx_resched+0x5b/0x90
> [<ffffffff81207281>] __perf_event_enable+0x1e1/0x240
> [<ffffffff81200639>] event_function+0xa9/0x180
> [<ffffffff81202000>] ? perf_cgroup_attach+0x70/0x70
> [<ffffffff8120203f>] remote_function+0x3f/0x50
> [<ffffffff811971f3>] flush_smp_call_function_queue+0x83/0x150
> [<ffffffff81197bd3>] generic_smp_call_function_single_interrupt+0x13/0x60
> [<ffffffff810a6477>] smp_call_function_single_interrupt+0x27/0x40
> [<ffffffff81a26ea9>] call_function_single_interrupt+0x89/0x90
> [<ffffffff81120056>] finish_task_switch+0xa6/0x210
> [<ffffffff81120017>] ? finish_task_switch+0x67/0x210
> [<ffffffff81a1e83d>] __schedule+0x3dd/0xb50
> [<ffffffff81a1efe5>] schedule+0x35/0x80
> [<ffffffff81128031>] sys_sched_yield+0x61/0x70
> [<ffffffff81a25be5>] entry_SYSCALL_64_fastpath+0x18/0xa8
> ---[ end trace 6235f556f5ea83a9 ]---
This patch puts the checks in perf_aux_output_begin() in the same order
as that of perf_mmap_close().
Reported-by: Vince Weaver <vincent.weaver@maine.edu>
Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Arnaldo Carvalho de Melo <acme@infradead.org>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: vince@deater.net
Link: http://lkml.kernel.org/r/20160906132353.19887-3-alexander.shishkin@linux.intel.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
In the mmap_close() path we need to stop all the AUX events that are
writing data to the AUX area that we are unmapping, before we can
safely free the pages. To determine if an event needs to be stopped,
we're comparing its ->rb against the one that's getting unmapped.
However, a SET_OUTPUT ioctl may turn up inside an AUX transaction
and swizzle event::rb to some other ring buffer, but the transaction
will keep writing data to the old ring buffer until the event gets
scheduled out. At this point, mmap_close() will skip over such an
event and will proceed to free the AUX area, while it's still being
used by this event, which will set off a warning in the mmap_close()
path and cause a memory corruption.
To avoid this, always stop an AUX event before its ->rb is updated;
this will release the (potentially) last reference on the AUX area
of the buffer. If the event gets restarted, its new ring buffer will
be used. If another SET_OUTPUT comes and switches it back to the
old ring buffer that's getting unmapped, it's also fine: this
ring buffer's aux_mmap_count will be zero and AUX transactions won't
start any more.
Reported-by: Vince Weaver <vincent.weaver@maine.edu>
Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Arnaldo Carvalho de Melo <acme@infradead.org>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: vince@deater.net
Link: http://lkml.kernel.org/r/20160906132353.19887-2-alexander.shishkin@linux.intel.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Since setting an encryption policy requires writing metadata to the
filesystem, it should be guarded by mnt_want_write/mnt_drop_write.
Otherwise, a user could cause a write to a frozen or readonly
filesystem. This was handled correctly by f2fs but not by ext4. Make
fscrypt_process_policy() handle it rather than relying on the filesystem
to get it right.
Signed-off-by: Eric Biggers <ebiggers@google.com>
Cc: stable@vger.kernel.org # 4.1+; check fs/{ext4,f2fs}
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Acked-by: Jaegeuk Kim <jaegeuk@kernel.org>
The patch
fs/cifs: make share unaccessible at root level mountable
makes use of prepaths when any component of the underlying path is
inaccessible.
When mounting 2 separate shares having different prepaths but are other
wise similar in other respects, we end up sharing superblocks when we
shouldn't be doing so.
Signed-off-by: Sachin Prabhu <sprabhu@redhat.com>
Tested-by: Aurelien Aptel <aaptel@suse.com>
Signed-off-by: Steve French <smfrench@gmail.com>
Fix memory leaks introduced by the patch
fs/cifs: make share unaccessible at root level mountable
Also move allocation of cifs_sb->prepath to cifs_setup_cifs_sb().
Signed-off-by: Sachin Prabhu <sprabhu@redhat.com>
Tested-by: Aurelien Aptel <aaptel@suse.com>
Signed-off-by: Steve French <smfrench@gmail.com>
The FS_IOC_SET_ENCRYPTION_POLICY ioctl allowed setting an encryption
policy on nondirectory files. This was unintentional, and in the case
of nonempty regular files did not behave as expected because existing
data was not actually encrypted by the ioctl.
In the case of ext4, the user could also trigger filesystem errors in
->empty_dir(), e.g. due to mismatched "directory" checksums when the
kernel incorrectly tried to interpret a regular file as a directory.
This bug affected ext4 with kernels v4.8-rc1 or later and f2fs with
kernels v4.6 and later. It appears that older kernels only permitted
directories and that the check was accidentally lost during the
refactoring to share the file encryption code between ext4 and f2fs.
This patch restores the !S_ISDIR() check that was present in older
kernels.
Signed-off-by: Eric Biggers <ebiggers@google.com>
Cc: stable@vger.kernel.org
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
On an ext4 or f2fs filesystem with file encryption supported, a user
could set an encryption policy on any empty directory(*) to which they
had readonly access. This is obviously problematic, since such a
directory might be owned by another user and the new encryption policy
would prevent that other user from creating files in their own directory
(for example).
Fix this by requiring inode_owner_or_capable() permission to set an
encryption policy. This means that either the caller must own the file,
or the caller must have the capability CAP_FOWNER.
(*) Or also on any regular file, for f2fs v4.6 and later and ext4
v4.8-rc1 and later; a separate bug fix is coming for that.
Signed-off-by: Eric Biggers <ebiggers@google.com>
Cc: stable@vger.kernel.org # 4.1+; check fs/{ext4,f2fs}
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
The mdio-xgene driver is only useful on X-Gene SoC.
Signed-off-by: Jean Delvare <jdelvare@suse.de>
Cc: Iyappan Subramanian <isubramanian@apm.com>
Cc: David S. Miller <davem@davemloft.net>
Acked-by: Iyappan Subramanian <isubramanian@apm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
iwlwifi
* fix P2P dump trigger
* prevent a potential null dereference in iwlmvm
* prevent an uninitialized value from being returned in iwlmvm
* advertise support for channel width change in AP mode
ath10k
* fix racy rx status retrieval from htt context
* QCA9887 support is not experimental anymore, remove the warning message
ath9k
* fix regression with led GPIOs
* fix AR5416 GPIO access warning
brcmfmac
* avoid potential stack overflow in brcmf_cfg80211_start_ap()
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.11 (GNU/Linux)
iQEcBAABAgAGBQJX0UZGAAoJEG4XJFUm622bNrQH/1x1A5go1O0WT9LFz7xgowY9
LtcpDcyDsz0h+dn1d9VuncTuO8mSREP/zxcDyibhiwnrVXR00QM0F9VgPSlUxASH
PwM06NZACblCk/mqSzI79BJ8kNBlwIhcr6OXpwzlcvF9JMUIDu/hQCdRPPn0lDRI
XVJHrM7dP2ZB0sVKAbM7+1Q1Bnv5JetPUduu1jOBtk+HiGjOAsejTFOh6AsOqZzZ
ZUTKBJeGkDp3XEVnlgkhJ1Y9xPaMpke/yqAlOPIgP90Ghd2SMJHTHiW6S28P/W1F
FMtTMXbYzzHAHNVSnOMgJyWRm1xD/Y6sVkeyXTD40BgHYXZcB6uHVLnzjR4i4BY=
=teXL
-----END PGP SIGNATURE-----
Merge tag 'wireless-drivers-for-davem-2016-09-08' of git://git.kernel.org/pub/scm/linux/kernel/git/kvalo/wireless-drivers
Kalle Valo says:
====================
wireless-drivers fixes for 4.8
iwlwifi
* fix P2P dump trigger
* prevent a potential null dereference in iwlmvm
* prevent an uninitialized value from being returned in iwlmvm
* advertise support for channel width change in AP mode
ath10k
* fix racy rx status retrieval from htt context
* QCA9887 support is not experimental anymore, remove the warning message
ath9k
* fix regression with led GPIOs
* fix AR5416 GPIO access warning
brcmfmac
* avoid potential stack overflow in brcmf_cfg80211_start_ap()
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
We move register_netdev() to the end of dwceqos_probe() to close any
races where the netdev callbacks are called before the initialization
has finished.
Reported-by: Pavel Andrianov <andrianov@ispras.ru>
Signed-off-by: Lars Persson <larper@axis.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Previously, without GSO, it was easy to identify it: if the chunk didn't
fit and there was no data chunk in the packet yet, we could fragment at
IP level. So if there was an auth chunk and we were bundling a big data
chunk, it would fragment regardless of the size of the auth chunk. This
also works for the context of PMTU reductions.
But with GSO, we cannot distinguish such PMTU events anymore, as the
packet is allowed to exceed PMTU.
So we need another check: to ensure that the chunk that we are adding,
actually fits the current PMTU. If it doesn't, trigger a flush and let
it be fragmented at IP level in the next round.
Signed-off-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Bad blocks can be injected via /sys/block/pmemN/badblocks. In a situation
where legacy pmem is being used or a pmem region created by using memmap
kernel parameter, the injected bad blocks are not cleared due to
nvdimm_clear_poison() failing from lack of ndctl function pointer. In
this case we need to just return as handled and allow the bad blocks to
be cleared rather than fail.
Reviewed-by: Vishal Verma <vishal.l.verma@intel.com>
Signed-off-by: Dave Jiang <dave.jiang@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
The check for a 'pmem' type SPA in the MCE handler was inverted due to a
merge/rebase error.
Fixes: 6839a6d nfit: do an ARS scrub on hitting a latent media error
Cc: linux-acpi@vger.kernel.org
Cc: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Vishal Verma <vishal.l.verma@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
track_pfn_insert() in vmf_insert_pfn_pmd() is marking dax mappings as
uncacheable rendering them impractical for application usage. DAX-pte
mappings are cached and the goal of establishing DAX-pmd mappings is to
attain more performance, not dramatically less (3 orders of magnitude).
track_pfn_insert() relies on a previous call to reserve_memtype() to
establish the expected page_cache_mode for the range. While memremap()
arranges for reserve_memtype() to be called, devm_memremap_pages() does
not. So, teach track_pfn_insert() and untrack_pfn() how to handle
tracking without a vma, and arrange for devm_memremap_pages() to
establish the write-back-cache reservation in the memtype tree.
Cc: <stable@vger.kernel.org>
Cc: Matthew Wilcox <mawilcox@microsoft.com>
Cc: Ross Zwisler <ross.zwisler@linux.intel.com>
Cc: Nilesh Choudhury <nilesh.choudhury@oracle.com>
Cc: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Reported-by: Toshi Kani <toshi.kani@hpe.com>
Reported-by: Kai Zhang <kai.ka.zhang@oracle.com>
Acked-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Attempting to dump /proc/<pid>/smaps for a process with pmd dax mappings
currently results in the following VM_BUG_ONs:
kernel BUG at mm/huge_memory.c:1105!
task: ffff88045f16b140 task.stack: ffff88045be14000
RIP: 0010:[<ffffffff81268f9b>] [<ffffffff81268f9b>] follow_trans_huge_pmd+0x2cb/0x340
[..]
Call Trace:
[<ffffffff81306030>] smaps_pte_range+0xa0/0x4b0
[<ffffffff814c2755>] ? vsnprintf+0x255/0x4c0
[<ffffffff8123c46e>] __walk_page_range+0x1fe/0x4d0
[<ffffffff8123c8a2>] walk_page_vma+0x62/0x80
[<ffffffff81307656>] show_smap+0xa6/0x2b0
kernel BUG at fs/proc/task_mmu.c:585!
RIP: 0010:[<ffffffff81306469>] [<ffffffff81306469>] smaps_pte_range+0x499/0x4b0
Call Trace:
[<ffffffff814c2795>] ? vsnprintf+0x255/0x4c0
[<ffffffff8123c46e>] __walk_page_range+0x1fe/0x4d0
[<ffffffff8123c8a2>] walk_page_vma+0x62/0x80
[<ffffffff81307696>] show_smap+0xa6/0x2b0
These locations are sanity checking page flags that must be set for an
anonymous transparent huge page, but are not set for the zone_device
pages associated with dax mappings.
Cc: Ross Zwisler <ross.zwisler@linux.intel.com>
Cc: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Acked-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Jiri Pirko says:
====================
mlxsw: couple of fixes
Couple of fixes from Ido and myself.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
During port init, we currently set the port's type to Ethernet after
setting its MAC address. However, the hardware documentation states this
should be the other way around.
Align the driver with the hardware documentation and set the port's MAC
address after setting its type.
Fixes: 56ade8fe3f ("mlxsw: spectrum: Add initial support for Spectrum ASIC")
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
When neigh_init fails, we have to do proper cleanup including
router_fini call.
Fixes: 6cf3c971dc ("mlxsw: spectrum_router: Add private neigh table")
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Acked-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
... in all cases, including the failing access_ok()
Note that some architectures using asm-generic/uaccess.h have
__copy_from_user() not zeroing the tail on failure halfway
through. This variant works either way.
Cc: stable@vger.kernel.org
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
The resent conversion of the cpu hotplug support in the uncore driver
introduced a regression due to the way the callbacks are invoked at
initialization time.
The old code called the prepare/starting/online function on each online cpu
as a block. The new code registers the hotplug callbacks in the core for
each state. The core invokes the callbacks at each registration on all
online cpus.
The code implicitely relied on the prepare/starting/online callbacks being
called as combo on a particular cpu, which was not obvious and completely
undocumented.
The resulting subtle wreckage happens due to the way how the uncore code
manages shared data structures for cpus which share an uncore resource in
hardware. The sharing is determined in the cpu starting callback, but the
prepare callback allocates per cpu data for the upcoming cpu because
potential sharing is unknown at this point. If the starting callback finds
a online cpu which shares the hardware resource it takes a refcount on the
percpu data of that cpu and puts the own data structure into a
'free_at_online' pointer of that shared data structure. The online callback
frees that.
With the old model this worked because in a starting callback only one non
unused structure (the one of the starting cpu) was available. The new code
allocates the data structures for all cpus when the prepare callback is
registered.
Now the starting function iterates through all online cpus and looks for a
data structure (skipping its own) which has a matching hardware id. The id
member of the data structure is initialized to 0, but the hardware id can
be 0 as well. The resulting wreckage is:
CPU0 finds a matching id on CPU1, takes a refcount on CPU1 data and puts
its own data structure into CPU1s data structure to be freed.
CPU1 skips CPU0 because the data structure is its allegedly unsued own.
It finds a matching id on CPU2, takes a refcount on CPU1 data and puts
its own data structure into CPU2s data structure to be freed.
....
Now the online callbacks are invoked.
CPU0 has a pointer to CPU1s data and frees the original CPU0 data. So
far so good.
CPU1 has a pointer to CPU2s data and frees the original CPU1 data, which
is still referenced by CPU0 ---> Booom
So there are two issues to be solved here:
1) The id field must be initialized at allocation time to a value which
cannot be a valid hardware id, i.e. -1
This prevents the above scenario, but now CPU1 and CPU2 both stick their
own data structure into the free_at_online pointer of CPU0. So we leak
CPU1s data structure.
2) Fix the memory leak described in #1
Instead of having a single pointer, use a hlist to enqueue the
superflous data structures which are then freed by the first cpu
invoking the online callback.
Ideally we should know the sharing _before_ invoking the prepare callback,
but that's way beyond the scope of this bug fix.
[ tglx: Rewrote changelog ]
Fixes: 96b2bd3866 ("perf/x86/amd/uncore: Convert to hotplug state machine")
Reported-and-tested-by: Eric Sandeen <sandeen@sandeen.net>
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Cc: Borislav Petkov <bp@suse.de>
Link: http://lkml.kernel.org/r/20160909160822.lowgmkdwms2dheyv@linutronix.de
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
This includes a couple of bugfixs for virtio.
The virtio console patch is actually also
in x86/tip targeting 4.9 because it helps vmap
stacks, but it also fixes IOMMU_PLATFORM which
was added in 4.8, and it seems important not to
ship that in a broken configuration.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1
iQEcBAABAgAGBQJX0vwhAAoJECgfDbjSjVRpcZQH/ie8unPbbdeV8kiYlW3CmYNl
lZc2HzpW/mwm3gTO4ItJUWrvg0S2yfrEF167VJ1tjgRj7breXZ8zdQVVf3mvDykn
66JB1VZ1lFdS06IUHxzeEfKItiqQBYye0PmhRZbDQa46YZzgvC/A6QArTr605JHd
Iggerhncy4OzCQQYbxRE2izXt06cR/Mg9cw3yXOiK/9zWGu6MR92q8BAZmpSNq5d
UbXRd/06UXYwGTd/pzOuq5n+/BnIy91oVpydWIIODr15SEMYfEJqfaFZqiJovuo2
iE4yiHdbofm9rUkiuDCGrEHuLwkQ426oWQ9f6B7sZvtqysq+ZSutiXNpERITN3E=
=k3Xr
-----END PGP SIGNATURE-----
Merge tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost
Pull virtio fixes from Michael Tsirkin:
"This includes a couple of bugfixs for virtio.
The virtio console patch is actually also in x86/tip targeting 4.9
because it helps vmap stacks, but it also fixes IOMMU_PLATFORM which
was added in 4.8, and it seems important not to ship that in a broken
configuration"
* tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost:
virtio_console: Stop doing DMA on the stack
virtio: mark vring_dma_dev() static
- If the PM QoS framework invokes cancel_delayed_work_sync() during
early boot, it will enable interrupts which is not expected at
that point, so prevent it from happening (Tejun Heo).
- Fix cpufreq statistic documentation to follow a recent change in
behavior that forgot to update it as appropriate (Jean Delvare).
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v2.0.22 (GNU/Linux)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=+uoS
-----END PGP SIGNATURE-----
Merge tag 'pm-4.8-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull power management fixes from Rafael Wysocki:
"This includes a PM QoS framework fix from Tejun to prevent interrupts
from being enabled unexpectedly during early boot and a cpufreq
documentation fix.
Specifics:
- If the PM QoS framework invokes cancel_delayed_work_sync() during
early boot, it will enable interrupts which is not expected at that
point, so prevent it from happening (Tejun Heo)
- Fix cpufreq statistic documentation to follow a recent change in
behavior that forgot to update it as appropriate (Jean Delvare)"
* tag 'pm-4.8-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
cpufreq-stats: Minor documentation fix
PM / QoS: avoid calling cancel_delayed_work_sync() during early boot
- Revert a pointless attempt to add an include to solve the UM
allyes compilation problem.
- Make the mcp23s08 depend on OF_GPIO as it uses it and doesn't
compile properly without it.
- Fix a probing problem for ucb1x00.
-----BEGIN PGP SIGNATURE-----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=Hpxa
-----END PGP SIGNATURE-----
Merge tag 'gpio-v4.8-3' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio
Pull GPIO fixes from Linus Walleij:
"Some GPIO fixes that have been boiling the last two weeks or so.
Nothing special, I'm trying to sort out some Kconfig business and
Russell needs a fix in for -his SA1100 rework.
Summary:
- Revert a pointless attempt to add an include to solve the UM allyes
compilation problem.
- Make the mcp23s08 depend on OF_GPIO as it uses it and doesn't
compile properly without it.
- Fix a probing problem for ucb1x00"
* tag 'gpio-v4.8-3' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio:
gpio: sa1100: fix irq probing for ucb1x00
gpio: mcp23s08: make driver depend on OF_GPIO
Revert "gpio: include <linux/io-mapping.h> in gpiolib-of"
Pull fuse fix from Miklos Szeredi:
"This fixes a deadlock when fuse, direct I/O and loop device are
combined"
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/fuse:
fuse: direct-io: don't dirty ITER_BVEC pages
Pull overlayfs fix from Miklos Szeredi:
"This fixes a regression caused by the last pull request"
* 'overlayfs-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/vfs:
ovl: fix workdir creation
Pull btrfs fixes from Chris Mason:
"I'm not proud of how long it took me to track down that one liner in
btrfs_sync_log(), but the good news is the patches I was trying to
blame for these problems were actually fine (sorry Filipe)"
* 'for-linus-4.8' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs:
btrfs: introduce tickets_id to determine whether asynchronous metadata reclaim work makes progress
btrfs: remove root_log_ctx from ctx list before btrfs_sync_log returns
btrfs: do not decrease bytes_may_use when replaying extents
We get 1 warning when building kernel with W=1:
drivers/gpu/drm/vc4/vc4_bo.c:147:6: warning: no previous prototype for 'vc4_bo_cache_purge' [-Wmissing-prototypes]
In fact, this function is only used in the file in which it is
declared and don't need a declaration, but can be made static.
So this patch marks it 'static'.
Signed-off-by: Baoyou Xie <baoyou.xie@linaro.org>
Signed-off-by: Eric Anholt <eric@anholt.net>
We've got quite a few fixes at this time, and all are stable patches.
syzkaller strikes back again (episode 19 or so), and we had to plug
some holes in ALSA core part (mostly timer). In addition, a couple of
FireWire audio fixes for the invalid copy user calls in locks, and a
few quirks for HD-audio and USB-audio as usual are included.
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v2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=Jobo
-----END PGP SIGNATURE-----
Merge tag 'sound-4.8-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound
Pull sound fixes from Takashi Iwai:
"We've got quite a few fixes at this time, and all are stable patches.
syzkaller strikes back again (episode 19 or so), and we had to plug
some holes in ALSA core part (mostly timer).
In addition, a couple of FireWire audio fixes for the invalid copy
user calls in locks, and a few quirks for HD-audio and USB-audio as
usual are included"
* tag 'sound-4.8-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound:
ALSA: rawmidi: Fix possible deadlock with virmidi registration
ALSA: timer: Fix zero-division by continue of uninitialized instance
ALSA: timer: fix NULL pointer dereference in read()/ioctl() race
ALSA: fireworks: accessing to user space outside spinlock
ALSA: firewire-tascam: accessing to user space outside spinlock
ALSA: hda - Enable subwoofer on Dell Inspiron 7559
ALSA: hda - Add headset mic quirk for Dell Inspiron 5468
ALSA: usb-audio: Add sample rate inquiry quirk for B850V3 CP2114
ALSA: timer: fix NULL pointer dereference on memory allocation failure
ALSA: timer: fix division by zero after SNDRV_TIMER_IOCTL_CONTINUE
virtio_console uses a small DMA buffer for control requests. Move
that buffer into heap memory.
Doing virtio DMA on the stack is normally okay on non-DMA-API virtio
systems (which is currently most of them), but it breaks completely
if the stack is virtually mapped.
Tested by typing both directions using picocom aimed at /dev/hvc0.
Signed-off-by: Andy Lutomirski <luto@kernel.org>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Amit Shah <amit.shah@redhat.com>
We get 1 warning when building kernel with W=1:
drivers/virtio/virtio_ring.c:170:16: warning: no previous prototype for 'vring_dma_dev' [-Wmissing-prototypes]
In fact, this function is only used in the file in which it is
declared and don't need a declaration, but can be made static.
so this patch marks this function with 'static'.
Signed-off-by: Baoyou Xie <baoyou.xie@linaro.org>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
commit 5f9d1fde7d54a5(raid5: fix memory leak of bio integrity data)
moves bio_reset to bio_endio. But it introduces a small race condition.
It does bio_reset after raid5_release_stripe, which could make the
stripe reusable and hence reuse the bio just before bio_reset. Moving
bio_reset before raid5_release_stripe is called should fix the race.
Reported-and-tested-by: Stefan Priebe - Profihost AG <s.priebe@profihost.ag>
Signed-off-by: Shaohua Li <shli@fb.com>
generic definition to smp_wmb() is not sufficient
- avoid a recursive loop with the graph tracer by using using
preempt_(enable|disable)_notrace in _percpu_(read|write)
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1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=QLnH
-----END PGP SIGNATURE-----
Merge tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
Pull arm64 fixes from Catalin Marinas:
- smp_mb__before_spinlock() changed to smp_mb() on arm64 since the
generic definition to smp_wmb() is not sufficient
- avoid a recursive loop with the graph tracer by using using
preempt_(enable|disable)_notrace in _percpu_(read|write)
* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
arm64: use preempt_disable_notrace in _percpu_read/write
arm64: spinlocks: implement smp_mb__before_spinlock() as smp_mb()
With the introduction of critical-clock support in v4.8, our developers'
default configuration is to run with 'clk_ignore_unused' removed. This
patch-set ensures they can achieve successful boot when a) booting from
an SD Card and when b) booting using USB->Eth adaptors for NFS booting.
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1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=lGFr
-----END PGP SIGNATURE-----
Merge tag 'sti-dt-fixes-for-v4.8-rcs' of git://git.kernel.org/pub/scm/linux/kernel/git/pchotard/sti into fixes
Pull "Handle STiH410 interconnect clock required for EHCI/OHCI and SDHCI" from Patrice Chotard:
With the introduction of critical-clock support in v4.8, our developers'
default configuration is to run with 'clk_ignore_unused' removed. This
patch-set ensures they can achieve successful boot when a) booting from
an SD Card and when b) booting using USB->Eth adaptors for NFS booting.
* tag 'sti-dt-fixes-for-v4.8-rcs' of git://git.kernel.org/pub/scm/linux/kernel/git/pchotard/sti:
ARM: dts: STiH407-family: Provide interconnect clock for consumption in ST SDHCI
ARM: dts: STiH410: Handle interconnect clock required by EHCI/OHCI (USB)
The ../../../arm... style cross-references added by commit 9d56c22a78
("ARM: bcm2835: Add devicetree for the Raspberry Pi 3.") do not work in the
context of the split device-tree repository[0] (where the directory
structure differs). As with commit 8ee57b8182 ("ARM64: dts: vexpress: Use
a symlink to vexpress-v2m-rs1.dtsi from arch=arm") use symlinks instead.
[0] https://git.kernel.org/cgit/linux/kernel/git/devicetree/devicetree-rebasing.git/
Signed-off-by: Ian Campbell <ijc@hellion.org.uk>
Acked-by: Mark Rutland <mark.rutland@arm.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Will Deacon <will.deacon@arm.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Rob Herring <robh+dt@kernel.org>
Cc: Frank Rowand <frowand.list@gmail.com>
Cc: Eric Anholt <eric@anholt.net>
Cc: Stephen Warren <swarren@wwwdotorg.org>
Cc: Lee Jones <lee@kernel.org>
Cc: Gerd Hoffmann <kraxel@redhat.com>
Cc: devicetree@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-rpi-kernel@lists.infradead.org
Cc: arm@kernel.org
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
This file is included from DTS files under arch/arm64 too (via
broadcom/bcm2837-rpi-3-b.dts and broadcom/bcm2837.dtsi). There is a desire
not to have skeleton.dtsi for ARM64. See commit 3ebee5a2e1 ("arm64: dts:
kill skeleton.dtsi") for rationale for its removal.
As well as the addition of #*-cells also requires adding the device_type to
the rpi memory node explicitly.
Note that this change results in the removal of an empty /aliases node from
bcm2835-rpi-a.dtb and bcm2835-rpi-a-plus.dtb. I have no hardware to check
if this is a problem or not.
It also results in some reordering of the nodes in the DTBs (the /aliases
and /memory nodes come later). This isn't supposed to matter but, again,
I've no hardware to check if it is true in this particular case.
Signed-off-by: Ian Campbell <ijc@hellion.org.uk>
Acked-by: Mark Rutland <mark.rutland@arm.com>
Tested-by: Stefan Wahren <stefan.wahren@i2se.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Will Deacon <will.deacon@arm.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Rob Herring <robh+dt@kernel.org>
Cc: Frank Rowand <frowand.list@gmail.com>
Cc: Eric Anholt <eric@anholt.net>
Cc: Stephen Warren <swarren@wwwdotorg.org>
Cc: Lee Jones <lee@kernel.org>
Cc: Gerd Hoffmann <kraxel@redhat.com>
Cc: devicetree@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-rpi-kernel@lists.infradead.org
Cc: arm@kernel.org
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Fixes an idmap issue on 32-bit KVM on ARM, and fixes a memory unmapping
issue that we've had forever.
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1
iQEcBAABAgAGBQJX0pHmAAoJEEtpOizt6ddy1LcIAI0bolSI1veypr1jCE3rTqPU
3y0jnsOUDVYFWAG6g+fy8navkzwRxp9bgR4B9JZ35P/A0Te2vynajikf24ts/n2F
oKQ4p1gq8AninXLYCJNcnlJ2yaB8beHzdPzp++IyayI1gc9CGfSlHdltg5CID/lT
f5hMgrPv1n5tgD2wWZkqLTr84DQfEMopWg7ICgH3BgPwyS4ogs1/JJF4M+MN6nUP
lcAvukxnH62246dXsNOpjtubUmruK3ie16mqxCnRiT8uYnfS4JVsxLgHUqR6U/es
/0aASc0oRhzEafGFiVC6TtrZvkSirbBw363WnswFyfafXrF+4P6Vhd9KnqZ11MI=
=boFc
-----END PGP SIGNATURE-----
Merge tag 'kvm-arm-fixes-for-v4.8-round2' of git://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm into kvm-master
KVM/ARM Fixes for v4.8, round 2
Fixes an idmap issue on 32-bit KVM on ARM, and fixes a memory unmapping
issue that we've had forever.
- Don't alias user region to other regions below PAGE_OFFSET from Paul Mackerras
- Fix again csum_partial_copy_generic() on 32-bit from Christophe Leroy
- Fix corrupted PE allocation bitmap on releasing PE from Gavin Shan
Fixes for code merged this cycle:
- Fix crash on releasing compound PE from Gavin Shan
- Fix processor numbers in OPAL ICP from Benjamin Herrenschmidt
- Fix little endian build with CONFIG_KEXEC=n from Thiago Jung Bauermann
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1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=q0Jo
-----END PGP SIGNATURE-----
Merge tag 'powerpc-4.8-5' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux
Pull powerpc fixes from Michael Ellerman:
"Fixes marked for stable:
- Don't alias user region to other regions below PAGE_OFFSET from
Paul Mackerras
- Fix again csum_partial_copy_generic() on 32-bit from Christophe
Leroy
- Fix corrupted PE allocation bitmap on releasing PE from Gavin Shan
Fixes for code merged this cycle:
- Fix crash on releasing compound PE from Gavin Shan
- Fix processor numbers in OPAL ICP from Benjamin Herrenschmidt
- Fix little endian build with CONFIG_KEXEC=n from Thiago Jung
Bauermann"
* tag 'powerpc-4.8-5' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux:
powerpc/mm: Don't alias user region to other regions below PAGE_OFFSET
powerpc/32: Fix again csum_partial_copy_generic()
powerpc/powernv: Fix corrupted PE allocation bitmap on releasing PE
powerpc/powernv: Fix crash on releasing compound PE
powerpc/xics/opal: Fix processor numbers in OPAL ICP
powerpc/pseries: Fix little endian build with CONFIG_KEXEC=n
Pull ARM fixes from Russell King:
"A few ARM fixes:
- Robin Murphy noticed that the non-secure privileged entry was
relying on undefined behaviour, which needed to be fixed.
- Vladimir Murzin noticed that prov-v7 fails to build for MMUless
configurations because a required header file wasn't included.
- A bunch of fixes for StrongARM regressions found while testing
4.8-rc on such platforms"
* 'fixes' of git://git.armlinux.org.uk/~rmk/linux-arm:
ARM: sa1100: clear reset status prior to reboot
ARM: 8600/1: Enforce some NS-SVC initialisation
ARM: 8599/1: mm: pull asm/memory.h explicitly
ARM: sa1100: register clocks early
ARM: sa1100: fix 3.6864MHz clock
Unfortunately we have a bogus dwc3 patch leaked through the cracks and
got merged into Linus' HEAD. That patch ended up causing off-by-1 error
in our TRB accounting logic. Thankfully John Youn found out the problem
and we provided a revert to the bogus dwc3 patch in no time.
Apart from this off-by-1 error, we have two fixes to the Renesas drivers,
a small fix to our generic phy driver, a NULL pointer dereference fix for
f_eem and a build warning fix in dwc3.
-----BEGIN PGP SIGNATURE-----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=UcMZ
-----END PGP SIGNATURE-----
Merge tag 'fixes-for-v4.8-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/balbi/usb into usb-linus
Felipe writes:
usb: fixes for v4.8-rc6
Unfortunately we have a bogus dwc3 patch leaked through the cracks and
got merged into Linus' HEAD. That patch ended up causing off-by-1 error
in our TRB accounting logic. Thankfully John Youn found out the problem
and we provided a revert to the bogus dwc3 patch in no time.
Apart from this off-by-1 error, we have two fixes to the Renesas drivers,
a small fix to our generic phy driver, a NULL pointer dereference fix for
f_eem and a build warning fix in dwc3.
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1
iQEcBAABAgAGBQJX0oXaAAoJEEhZKYFQ1nG7298H/RKxcA44iet+zvv8z8EX2yZt
/H26bzu1/5S6GilXmI92KdEdpNgT1bBwp1ZqrGmMh9Zoi13X1aJJEnQGiyn9kxwK
VHNb8UZ7OT2M6Sqf29zlrNfK6zxh3ou8UMK7Gv3YHjL1s0nFtkCsED4vdbisIMnj
UuHzkT5C9l/mnJPhM9G44vXOwJFEZhWdfL5D+KSIi5JlMuBj0z9FZkGiSnchqrzb
IbQvoPWjt+eUCkktTY8yEIU8RThqzVRJrqjeT3TBt3wYZHfCqvVnmCc81QpxvBub
ZIJ1vhPd8zjP/FO6zMD//Rt/B4aTTodqWPtU5EaLwSkYASDBBYJunpyzZWZ+B7s=
=TwAO
-----END PGP SIGNATURE-----
Merge tag 'usb-ci-v4.8-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/peter.chen/usb into usb-linus
Peter writes:
Fix the possible kernel panic when the hardware signal is bad for chipidea udc.
We have a big rework of the kxsd9 driver queued up behind the fix below and
a fix for a recent fix that was marked for stable.
Hence this fix series is perhaps a little more urgent than average for IIO.
* core
- a fix for a fix in the last set. The recent fix for blocking ops when
! task running left a path (unlikely one) in which the function return
value was not set - so initialise it to 0.
- The IIO_TYPE_FRACTIONAL code previously didn't cope with negative
fractions. Turned out a fix for this was in Analog's tree but hadn't made
it upstream.
* bmc150
- reset chip at init time. At least one board out there ends up coming up
in an unstable state due to noise during power up. The reset does no
harm on other boards.
* kxsd9
- Fix a bug in the reported scaling due to failing to set the integer
part to 0.
* hid-sensors-pressure
- Output was in the wrong units to comply with the IIO ABI.
* tools
- iio_generic_buffer: Fix the trigger-less mode by ensuring we don't fault
out for having no trigger when we explicitly said we didn't want to have
one.
-----BEGIN PGP SIGNATURE-----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=Ob6a
-----END PGP SIGNATURE-----
Merge tag 'iio-fixes-for-4.8b' of git://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio into staging-linus
Jonathan writes:
Second set of IIO fixes for the 4.8 cycle.
We have a big rework of the kxsd9 driver queued up behind the fix below and
a fix for a recent fix that was marked for stable.
Hence this fix series is perhaps a little more urgent than average for IIO.
* core
- a fix for a fix in the last set. The recent fix for blocking ops when
! task running left a path (unlikely one) in which the function return
value was not set - so initialise it to 0.
- The IIO_TYPE_FRACTIONAL code previously didn't cope with negative
fractions. Turned out a fix for this was in Analog's tree but hadn't made
it upstream.
* bmc150
- reset chip at init time. At least one board out there ends up coming up
in an unstable state due to noise during power up. The reset does no
harm on other boards.
* kxsd9
- Fix a bug in the reported scaling due to failing to set the integer
part to 0.
* hid-sensors-pressure
- Output was in the wrong units to comply with the IIO ABI.
* tools
- iio_generic_buffer: Fix the trigger-less mode by ensuring we don't fault
out for having no trigger when we explicitly said we didn't want to have
one.
Linus Torvalds