Instead of the various open coded calls to set the NFS_INO_STALE bit
and call nfs_zap_caches(), consolidate them into a single function
nfs_set_inode_stale().
NFS: Beware when dereferencing the delegation cred
When we look up the delegation cred, we are usually doing so in
conjunction with a read of the stateid, and we want to ensure
that the look up is atomic with that read.
Fixes: 57f188e04773 ("NFSv4: nfs_update_inplace_delegation() should update delegation cred")
[sfr@canb.auug.org.au: Fixed up borken Fixes: line from Trond :-)] Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
NFS: finish_automount() requires us to hold 2 refs to the mount record
We must not return from nfs_d_automount() without holding 2 references
to the mount record. Doing so, will trigger the BUG() in finish_automount().
Also ensure that we don't try to reschedule the automount timer with
a negative or zero timeout value.
Fixes: 22a1ae9a93fb ("NFS: If nfs_mountpoint_expiry_timeout < 0, do not expire submounts") Cc: stable@vger.kernel.org # v5.5+ Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
Scott Mayhew [Thu, 2 Apr 2020 21:20:44 +0000 (17:20 -0400)]
NFS: Fix a few constant_table array definitions
nfs_vers_tokens, nfs_xprt_protocol_tokens, and nfs_secflavor_tokens were
all missing an empty item at the end of the array, allowing
lookup_constant() to potentially walk off the end and trigger and oops.
Reported-by: Olga Kornievskaia <aglo@umich.edu> Signed-off-by: Scott Mayhew <smayhew@redhat.com> Fixes: e38bb238ed8c ("NFS: Convert mount option parsing to use functionality from fs_parser.h") Cc: stable@vger.kernel.org # v5.6 Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
Trond Myklebust [Mon, 30 Mar 2020 16:40:47 +0000 (12:40 -0400)]
NFS: Refactor nfs_lock_and_join_requests()
Refactor nfs_lock_and_join_requests() in order to separate out the
subrequest merging into its own function nfs_lock_and_join_group()
that can be used by O_DIRECT.
Trond Myklebust [Tue, 31 Mar 2020 22:27:26 +0000 (18:27 -0400)]
NFS: Reverse the submission order of requests in __nfs_pageio_add_request()
If we have to split the request up into subrequests, we have to submit
the request pointed to by the function call parameter last, in case
there is an error or other issue that causes us to exit before the
last request is submitted. The reason is that the caller is expected
to perform cleanup in those cases.
Trond Myklebust [Tue, 31 Mar 2020 00:13:48 +0000 (20:13 -0400)]
NFS: Fix a request reference leak in nfs_direct_write_clear_reqs()
nfs_direct_write_scan_commit_list() will lock the request and bump
the reference count, but we also need to account for the reference
that was taken when we initially added the request to the commit list.
Fixes: fb5f7f20cdb9 ("NFS: commit errors should be fatal") Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
Trond Myklebust [Sun, 29 Mar 2020 23:55:05 +0000 (19:55 -0400)]
NFS: Fix use-after-free issues in nfs_pageio_add_request()
We need to ensure that we create the mirror requests before calling
nfs_pageio_add_request_mirror() on the request we are adding.
Otherwise, we can end up with a use-after-free if the call to
nfs_pageio_add_request_mirror() triggers I/O.
NFS: Fix races nfs_page_group_destroy() vs nfs_destroy_unlinked_subrequests()
When a subrequest is being detached from the subgroup, we want to
ensure that it is not holding the group lock, or in the process
of waiting for the group lock.
Trond Myklebust [Sat, 28 Mar 2020 15:39:29 +0000 (11:39 -0400)]
NFS: Remove unused FLUSH_SYNC support in nfs_initiate_pgio()
If the FLUSH_SYNC flag is set, nfs_initiate_pgio() will currently
wait for completion, and then return the status of the I/O operation.
What we actually want to report in nfs_pageio_doio() is whether or
not the RPC call was launched successfully, whereas actual I/O
status is intended handled in the reply callbacks.
Since FLUSH_SYNC is never set by any of the callers anyway, let's
just remove that code altogether.
Trond Myklebust [Mon, 23 Mar 2020 19:18:12 +0000 (15:18 -0400)]
pNFS/flexfiles: Specify the layout segment range in LAYOUTGET
Move from requesting only full file layout segments, to requesting
layout segments that match our I/O size. This means the server is
still free to return a full file layout, but we will no longer
error out if it does not.
Trond Myklebust [Sat, 21 Mar 2020 13:27:46 +0000 (09:27 -0400)]
NFS: Fix O_DIRECT commit verifier handling
Instead of trying to save the commit verifiers and checking them against
previous writes, adopt the same strategy as for buffered writes, of
just checking the verifiers at commit time.
Trond Myklebust [Thu, 19 Mar 2020 17:36:36 +0000 (13:36 -0400)]
NFSv4/pnfs: Support a list of commit arrays in struct pnfs_ds_commit_info
When we have multiple layout segments with different lists of mirrored
data, we need to track the commits on a per layout segment basis.
This patch adds a list to support this tracking in struct
pnfs_ds_commit_info.
Chuck Lever [Fri, 21 Feb 2020 22:01:05 +0000 (17:01 -0500)]
xprtrdma: kmalloc rpcrdma_ep separate from rpcrdma_xprt
Change the rpcrdma_xprt_disconnect() function so that it no longer
waits for the DISCONNECTED event. This prevents blocking if the
remote is unresponsive.
In rpcrdma_xprt_disconnect(), the transport's rpcrdma_ep is
detached. Upon return from rpcrdma_xprt_disconnect(), the transport
(r_xprt) is ready immediately for a new connection.
The RDMA_CM_DEVICE_REMOVAL and RDMA_CM_DISCONNECTED events are now
handled almost identically.
However, because the lifetimes of rpcrdma_xprt structures and
rpcrdma_ep structures are now independent, creating an rpcrdma_ep
needs to take a module ref count. The ep now owns most of the
hardware resources for a transport.
Also, a kref is needed to ensure that rpcrdma_ep sticks around
long enough for the cm_event_handler to finish.
Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
Chuck Lever [Fri, 21 Feb 2020 22:01:00 +0000 (17:01 -0500)]
xprtrdma: Extract sockaddr from struct rdma_cm_id
rpcrdma_cm_event_handler() is always passed an @id pointer that is
valid. However, in a subsequent patch, we won't be able to extract
an r_xprt in every case. So instead of using the r_xprt's
presentation address strings, extract them from struct rdma_cm_id.
Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
Chuck Lever [Fri, 21 Feb 2020 22:00:54 +0000 (17:00 -0500)]
xprtrdma: Merge struct rpcrdma_ia into struct rpcrdma_ep
I eventually want to allocate rpcrdma_ep separately from struct
rpcrdma_xprt so that on occasion there can be more than one ep per
xprt.
The new struct rpcrdma_ep will contain all the fields currently in
rpcrdma_ia and in rpcrdma_ep. This is all the device and CM settings
for the connection, in addition to per-connection settings
negotiated with the remote.
Take this opportunity to rename the existing ep fields from rep_* to
re_* to disambiguate these from struct rpcrdma_rep.
Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
Chuck Lever [Fri, 21 Feb 2020 22:00:38 +0000 (17:00 -0500)]
xprtrdma: Invoke rpcrdma_ia_open in the connect worker
Move rdma_cm_id creation into rpcrdma_ep_create() so that it is now
responsible for allocating all per-connection hardware resources.
With this clean-up, all three arms of the switch statement in
rpcrdma_ep_connect are exactly the same now, thus the switch can be
removed.
Because device removal behaves a little differently than
disconnection, there is a little more work to be done before
rpcrdma_ep_destroy() can release the connection's rdma_cm_id. So
it is not quite symmetrical with rpcrdma_ep_create() yet.
Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
Chuck Lever [Fri, 21 Feb 2020 22:00:33 +0000 (17:00 -0500)]
xprtrdma: Allocate Protection Domain in rpcrdma_ep_create()
Make a Protection Domain (PD) a per-connection resource rather than
a per-transport resource. In other words, when the connection
terminates, the PD is destroyed.
Thus there is one less HW resource that remains allocated to a
transport after a connection is closed.
Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
Chuck Lever [Fri, 21 Feb 2020 22:00:28 +0000 (17:00 -0500)]
xprtrdma: Refactor rpcrdma_ep_connect() and rpcrdma_ep_disconnect()
Clean up: Simplify the synopses of functions in the connect and
disconnect paths in preparation for combining the rpcrdma_ia and
struct rpcrdma_ep structures.
Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
Chuck Lever [Fri, 21 Feb 2020 22:00:17 +0000 (17:00 -0500)]
xprtrdma: Refactor frwr_init_mr()
Clean up: prepare for combining the rpcrdma_ia and rpcrdma_ep
structures. Take the opportunity to rename the function to be
consistent with the "subsystem _ object _ verb" naming scheme.
Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
Chuck Lever [Fri, 21 Feb 2020 22:00:12 +0000 (17:00 -0500)]
xprtrdma: Invoke rpcrdma_ep_create() in the connect worker
Refactor rpcrdma_ep_create(), rpcrdma_ep_disconnect(), and
rpcrdma_ep_destroy().
rpcrdma_ep_create will be invoked at connect time instead of at
transport set-up time. It will be responsible for allocating per-
connection resources. In this patch it allocates the CQs and
creates a QP. More to come.
rpcrdma_ep_destroy() is the inverse functionality that is
invoked at disconnect time. It will be responsible for releasing
the CQs and QP.
These changes should be safe to do because both connect and
disconnect is guaranteed to be serialized by the transport send
lock.
This takes us another step closer to resolving the address and route
only at connect time so that connection failover to another device
will work correctly.
Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
Chuck Lever [Wed, 12 Feb 2020 16:12:35 +0000 (11:12 -0500)]
xprtrdma: Enhance MR-related trace points
Two changes:
- Show the number of SG entries that were mapped. This helps debug
DMA-related problems.
- Record the MR's resource ID instead of its memory address. This
groups each MR with its associated rdma-tool output, and reduces
needless exposure of memory addresses.
Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
Olga Kornievskaia [Thu, 26 Mar 2020 14:24:51 +0000 (10:24 -0400)]
SUNRPC: fix krb5p mount to provide large enough buffer in rq_rcvsize
Ever since commit 2c94b8eca1a2 ("SUNRPC: Use au_rslack when computing
reply buffer size"). It changed how "req->rq_rcvsize" is calculated. It
used to use au_cslack value which was nice and large and changed it to
au_rslack value which turns out to be too small.
Since 5.1, v3 mount with sec=krb5p fails against an Ontap server
because client's receive buffer it too small.
For gss krb5p, we need to account for the mic token in the verifier,
and the wrap token in the wrap token.
RFC 4121 defines:
mic token
Octet no Name Description
--------------------------------------------------------------
0..1 TOK_ID Identification field. Tokens emitted by
GSS_GetMIC() contain the hex value 04 04
expressed in big-endian order in this
field.
2 Flags Attributes field, as described in section
4.2.2.
3..7 Filler Contains five octets of hex value FF.
8..15 SND_SEQ Sequence number field in clear text,
expressed in big-endian order.
16..last SGN_CKSUM Checksum of the "to-be-signed" data and
octet 0..15, as described in section 4.2.4.
that's 16bytes (GSS_KRB5_TOK_HDR_LEN) + chksum
wrap token
Octet no Name Description
--------------------------------------------------------------
0..1 TOK_ID Identification field. Tokens emitted by
GSS_Wrap() contain the hex value 05 04
expressed in big-endian order in this
field.
2 Flags Attributes field, as described in section
4.2.2.
3 Filler Contains the hex value FF.
4..5 EC Contains the "extra count" field, in big-
endian order as described in section 4.2.3.
6..7 RRC Contains the "right rotation count" in big-
endian order, as described in section
4.2.5.
8..15 SND_SEQ Sequence number field in clear text,
expressed in big-endian order.
16..last Data Encrypted data for Wrap tokens with
confidentiality, or plaintext data followed
by the checksum for Wrap tokens without
confidentiality, as described in section
4.2.4.
Also 16bytes of header (GSS_KRB5_TOK_HDR_LEN), encrypted data, and cksum
(other things like padding)
Petr Vorel [Tue, 24 Mar 2020 20:08:49 +0000 (21:08 +0100)]
NFS: Don't specify NFS version in "UDP not supported" error
UDP was originally disabled in 6da1a034362f for NFSv4. Later in b24ee6c64ca7 UDP is by default disabled by NFS_DISABLE_UDP_SUPPORT=y for
all NFS versions. Therefore remove v4 from error message.
Fixes: b24ee6c64ca7 ("NFS: allow deprecation of NFS UDP protocol") Signed-off-by: Petr Vorel <pvorel@suse.cz> Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
Liwei Song [Wed, 25 Mar 2020 03:50:13 +0000 (11:50 +0800)]
nfsroot: set tcp as the default transport protocol
UDP is disabled by default in commit b24ee6c64ca7 ("NFS: allow
deprecation of NFS UDP protocol"), but the default mount options
is still udp, change it to tcp to avoid the "Unsupported transport
protocol udp" error if no protocol is specified when mount nfs.
Fixes: b24ee6c64ca7 ("NFS: allow deprecation of NFS UDP protocol") Signed-off-by: Liwei Song <liwei.song@windriver.com> Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
Misono Tomohiro [Wed, 28 Aug 2019 08:01:22 +0000 (17:01 +0900)]
NFS: direct.c: Fix memory leak of dreq when nfs_get_lock_context fails
When dreq is allocated by nfs_direct_req_alloc(), dreq->kref is
initialized to 2. Therefore we need to call nfs_direct_req_release()
twice to release the allocated dreq. Usually it is called in
nfs_file_direct_{read, write}() and nfs_direct_complete().
However, current code only calls nfs_direct_req_relese() once if
nfs_get_lock_context() fails in nfs_file_direct_{read, write}().
So, that case would result in memory leak.
Chuck Lever [Wed, 11 Mar 2020 15:21:07 +0000 (11:21 -0400)]
sunrpc: Fix gss_unwrap_resp_integ() again
xdr_buf_read_mic() tries to find unused contiguous space in a
received xdr_buf in order to linearize the checksum for the call
to gss_verify_mic. However, the corner cases in this code are
numerous and we seem to keep missing them. I've just hit yet
another buffer overrun related to it.
This logic assumes the transport has set the length of the tail
based on the size of the received message. base + len is then
supposed to be off the end of the message but still within the
actual buffer.
In fact, the length of the tail is set by the upper layer when the
Call is encoded so that the end of the tail is actually the end of
the allocated buffer itself. This causes the logic above to set
mic->data to point past the end of the receive buffer.
The "mic->data = head" arm of this if statement is no less fragile.
As near as I can tell, this has been a problem forever. I'm not sure
that minimizing au_rslack recently changed this pathology much.
So instead, let's use a more straightforward approach: kmalloc a
separate buffer to linearize the checksum. This is similar to
how gss_validate() currently works.
Coming back to this code, I had some trouble understanding what
was going on. So I've cleaned up the variable naming and added
a few comments that point back to the XDR definition in RFC 2203
to help guide future spelunkers, including myself.
As an added clean up, the functionality that was in
xdr_buf_read_mic() is folded directly into gss_unwrap_resp_integ(),
as that is its only caller.
Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Reviewed-by: Benjamin Coddington <bcodding@redhat.com> Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
Gustavo A. R. Silva [Mon, 9 Mar 2020 18:24:42 +0000 (13:24 -0500)]
nfs: Replace zero-length array with flexible-array member
The current codebase makes use of the zero-length array language
extension to the C90 standard, but the preferred mechanism to declare
variable-length types such as these ones is a flexible array member[1][2],
introduced in C99:
struct foo {
int stuff;
struct boo array[];
};
By making use of the mechanism above, we will get a compiler warning
in case the flexible array does not occur last in the structure, which
will help us prevent some kind of undefined behavior bugs from being
inadvertently introduced[3] to the codebase from now on.
Also, notice that, dynamic memory allocations won't be affected by
this change:
"Flexible array members have incomplete type, and so the sizeof operator
may not be applied. As a quirk of the original implementation of
zero-length arrays, sizeof evaluates to zero."[1]
Zhouyi Zhou [Fri, 6 Mar 2020 03:45:26 +0000 (03:45 +0000)]
NFS:remove redundant call to nfs_do_access
In function nfs_permission:
1. the rcu_read_lock and rcu_read_unlock around nfs_do_access
is unnecessary because the rcu critical data structure is already
protected in subsidiary function nfs_access_get_cached_rcu. No other
data structure needs rcu_read_lock in nfs_do_access.
2. call nfs_do_access once is enough, because:
2-1. when mask has MAY_NOT_BLOCK bit
The second call to nfs_do_access will not happen.
2-2. when mask has no MAY_NOT_BLOCK bit
The second call to nfs_do_access will happen if res == -ECHILD, which
means the first nfs_do_access goes out after statement if (!may_block).
The second call to nfs_do_access will go through this procedure once
again except continue the work after if (!may_block).
But above work can be performed by only one call to nfs_do_access
without mangling the mask flag.
Colin Ian King [Fri, 28 Feb 2020 23:44:14 +0000 (23:44 +0000)]
SUNRPC: remove redundant assignments to variable status
The variable status is being initialized with a value that is never
read and it is being updated later with a new value. 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: Trond Myklebust <trond.myklebust@hammerspace.com>
Trond Myklebust [Tue, 18 Feb 2020 20:58:31 +0000 (15:58 -0500)]
NFSv4: Add support for CB_RECALL_ANY for flexfiles layouts
When we receive a CB_RECALL_ANY that asks us to return flexfiles
layouts, we iterate through all the layouts and look at whether or
not there are active open file descriptors that might need them
for I/O. If there are no such descriptors, we return the layouts.
Trond Myklebust [Thu, 27 Feb 2020 13:29:02 +0000 (08:29 -0500)]
NFSv4: Clean up nfs_client_return_marked_delegations()
Convert it to use the nfs_client_for_each_server() helper, and
make it more efficient by skipping delegations for inodes we
know are in the process of being freed. Also improve the efficiency
of the cursor by skipping delegations that are being freed.
Trond Myklebust [Thu, 27 Feb 2020 00:16:09 +0000 (19:16 -0500)]
NFS: Add a helper nfs_client_for_each_server()
Add a helper nfs_client_for_each_server() to iterate through all the
filesystems that are attached to a struct nfs_client, and apply
a function to all the active ones.
Trond Myklebust [Thu, 27 Feb 2020 16:01:12 +0000 (11:01 -0500)]
NFSv4/pnfs: Return valid stateids in nfs_layout_find_inode_by_stateid()
Make sure to test the stateid for validity so that we catch instances
where the server may have been reusing stateids in
nfs_layout_find_inode_by_stateid().
Fixes: 7b410d9ce460 ("pNFS: Delay getting the layout header in CB_LAYOUTRECALL handlers") Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
Trond Myklebust [Sat, 8 Feb 2020 14:14:11 +0000 (09:14 -0500)]
NFS: Limit the size of the access cache by default
Currently, we have no real limit on the access cache size (we set it
to ULONG_MAX). That can lead to credentials getting pinned for a
very long time on lots of files if you have a system with a lot of
memory.
Trond Myklebust [Fri, 20 Dec 2019 15:43:37 +0000 (10:43 -0500)]
NFS: Ensure we time out if a delegreturn does not complete
We can't allow delegreturn to hold up nfs4_evict_inode() forever,
since that can cause the memory shrinkers to block. This patch
therefore ensures that we eventually time out, and complete the
reclaim of the inode.
Trond Myklebust [Mon, 27 Jan 2020 18:07:26 +0000 (13:07 -0500)]
NFSv4/pnfs: pnfs_set_layout_stateid() should update the layout cred
If the cred assigned to the layout that we're updating differs from
the one used to retrieve the new layout segment, then we need to
update the layout plh_lc_cred field.
Trond Myklebust [Mon, 3 Feb 2020 19:49:33 +0000 (14:49 -0500)]
NFS: Use the 64-bit server readdir cookies when possible
When we're running as a 64-bit architecture and are not running in
32-bit compatibility mode, it is better to use the 64-bit readdir
cookies that supplied by the server. Doing so improves the accuracy
of telldir()/seekdir(), particularly when the directory is changing,
for instance, when doing 'rm -rf'.
We still fall back to using the 32-bit offsets on 32-bit architectures
and when in compatibility mode.
Linus Torvalds [Sun, 15 Mar 2020 20:15:16 +0000 (13:15 -0700)]
Merge tag 'irq-urgent-2020-03-15' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull irq fix from Thomas Gleixner:
"A single commit to handle an erratum in Cavium ThunderX to prevent
access to GIC registers which are broken in the implementation"
* tag 'irq-urgent-2020-03-15' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
irqchip/gic-v3: Workaround Cavium erratum 38539 when reading GICD_TYPER2
Linus Torvalds [Sun, 15 Mar 2020 19:55:52 +0000 (12:55 -0700)]
Merge tag 'locking-urgent-2020-03-15' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull futex fix from Thomas Gleixner:
"Fix for yet another subtle futex issue.
The futex code used ihold() to prevent inodes from vanishing, but
ihold() does not guarantee inode persistence. Replace the inode
pointer with a per boot, machine wide, unique inode identifier.
The second commit fixes the breakage of the hash mechanism which
causes a 100% performance regression"
* tag 'locking-urgent-2020-03-15' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
futex: Unbreak futex hashing
futex: Fix inode life-time issue
Linus Torvalds [Sun, 15 Mar 2020 19:52:56 +0000 (12:52 -0700)]
Merge tag 'x86-urgent-2020-03-15' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 fixes from Thomas Gleixner:
"Two fixes for x86:
- Map EFI runtime service data as encrypted when SEV is enabled.
Otherwise e.g. SMBIOS data cannot be properly decoded by dmidecode.
- Remove the warning in the vector management code which triggered
when a managed interrupt affinity changed outside of a CPU hotplug
operation.
The warning was correct until the recent core code change that
introduced a CPU isolation feature which needs to migrate managed
interrupts away from online CPUs under certain conditions to
achieve the isolation"
* tag 'x86-urgent-2020-03-15' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/vector: Remove warning on managed interrupt migration
x86/ioremap: Map EFI runtime services data as encrypted for SEV
Linus Torvalds [Sun, 15 Mar 2020 19:50:15 +0000 (12:50 -0700)]
Merge tag 'perf-urgent-2020-03-15' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull perf fixes from Thomas Gleixner:
"A pile of perf fixes:
Kernel side:
- AMD uncore driver: Replace the open coded sanity check with the
core variant, which provides the correct error code and also leaves
a hint in dmesg
Tooling:
- Fix the stdio input handling with glibc versions >= 2.28
- Unbreak the futex-wake benchmark which was reduced to 0 test
threads due to the conversion to cpumaps
- Initialize sigaction structs before invoking sys_sigactio()
- Plug the mapfile memory leak in perf jevents
- Fix off by one relative directory includes
- Fix an undefined string comparison in perf diff"
* tag 'perf-urgent-2020-03-15' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
perf/amd/uncore: Replace manual sampling check with CAP_NO_INTERRUPT flag
tools: Fix off-by 1 relative directory includes
perf jevents: Fix leak of mapfile memory
perf bench: Clear struct sigaction before sigaction() syscall
perf bench futex-wake: Restore thread count default to online CPU count
perf top: Fix stdio interface input handling with glibc 2.28+
perf diff: Fix undefined string comparision spotted by clang's -Wstring-compare
perf symbols: Don't try to find a vmlinux file when looking for kernel modules
perf bench: Share some global variables to fix build with gcc 10
perf parse-events: Use asprintf() instead of strncpy() to read tracepoint files
perf env: Do not return pointers to local variables
perf tests bp_account: Make global variable static
Linus Torvalds [Sun, 15 Mar 2020 19:48:21 +0000 (12:48 -0700)]
Merge tag 'timers-urgent-2020-03-15' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull timer fix from Thomas Gleixner:
"A single fix adding the missing time namespace adjustment in
sys/sysinfo which caused sys/sysinfo to be inconsistent with
/proc/uptime when read from a task inside a time namespace"
* tag 'timers-urgent-2020-03-15' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
sys/sysinfo: Respect boottime inside time namespace
Linus Torvalds [Sun, 15 Mar 2020 19:44:23 +0000 (12:44 -0700)]
Merge tag 'ras-urgent-2020-03-15' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull RAS fixes from Thomas Gleixner:
"Two RAS related fixes:
- Shut down the per CPU thermal throttling poll work properly when a
CPU goes offline.
The missing shutdown caused the poll work to be migrated to a
unbound worker which triggered warnings about the usage of
smp_processor_id() in preemptible context
- Fix the PPIN feature initialization which missed to enable the
functionality when PPIN_CTL was enabled but the MSR locked against
updates"
* tag 'ras-urgent-2020-03-15' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/mce: Fix logic and comments around MSR_PPIN_CTL
x86/mce/therm_throt: Undo thermal polling properly on CPU offline
Linus Torvalds [Sun, 15 Mar 2020 19:42:03 +0000 (12:42 -0700)]
Merge tag 'efi-urgent-2020-03-15' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull EFI fixes from Thomas Gleixner:
"Two EFI fixes:
- Prevent a race and buffer overflow in the sysfs efivars interface
which causes kernel memory corruption.
- Add the missing NULL pointer checks in efivar_store_raw()"
* tag 'efi-urgent-2020-03-15' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
efi: Add a sanity check to efivar_store_raw()
efi: Fix a race and a buffer overflow while reading efivars via sysfs
Linus Torvalds [Sun, 15 Mar 2020 19:37:10 +0000 (12:37 -0700)]
Merge tag 'iommu-fixes-v5.6-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu
Pull IOMMU fixes from Joerg Roedel:
- Intel VT-d fixes:
- RCU list handling fixes
- Replace WARN_TAINT with pr_warn + add_taint for reporting firmware
issues
- DebugFS fixes
- Fix for hugepage handling in iova_to_phys implementation
- Fix for handling VMD devices, which have a domain number which
doesn't fit into 16 bits
- Warning message fix
- MSI allocation fix for iommu-dma code
- Sign-extension fix for io page-table code
- Fix for AMD-Vi to properly update the is-running bit when AVIC is
used
* tag 'iommu-fixes-v5.6-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu:
iommu/vt-d: Populate debugfs if IOMMUs are detected
iommu/amd: Fix IOMMU AVIC not properly update the is_run bit in IRTE
iommu/vt-d: Ignore devices with out-of-spec domain number
iommu/vt-d: Fix the wrong printing in RHSA parsing
iommu/vt-d: Fix debugfs register reads
iommu/vt-d: quirk_ioat_snb_local_iommu: replace WARN_TAINT with pr_warn + add_taint
iommu/vt-d: dmar_parse_one_rmrr: replace WARN_TAINT with pr_warn + add_taint
iommu/vt-d: dmar: replace WARN_TAINT with pr_warn + add_taint
iommu/vt-d: Silence RCU-list debugging warnings
iommu/vt-d: Fix RCU-list bugs in intel_iommu_init()
iommu/dma: Fix MSI reservation allocation
iommu/io-pgtable-arm: Fix IOVA validation for 32-bit
iommu/vt-d: Fix a bug in intel_iommu_iova_to_phys() for huge page
iommu/vt-d: Fix RCU list debugging warnings
Linus Torvalds [Sat, 14 Mar 2020 22:49:09 +0000 (15:49 -0700)]
Merge tag 'arc-5.6-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/vgupta/arc
Pull ARC fixes from Vineet Gupta:
- Fix __ALIGN_STR and __ALIGN to not use default junk padding
- Misc Kconfig cleanups, header updates
* tag 'arc-5.6-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/vgupta/arc:
ARC: define __ALIGN_STR and __ALIGN symbols for ARC
ARC: show_regs: reduce lines of output
ARC: Replace <linux/clk-provider.h> by <linux/of_clk.h>
ARC: fpu: fix randconfig build error reported by 0-day test service
ARC: fix some Kconfig typos
ARC: Cleanup old Kconfig IO scheduler options
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