Linus Torvalds [Wed, 24 Oct 2018 07:11:35 +0000 (08:11 +0100)]
net/kconfig: Make QCOM_QMI_HELPERS available when COMPILE_TEST
The networking merge brought in the experimental support for the
Qualcomm ath10k system NOC, which selects QCOM_QMI_HELPERS as a
dependency.
But the ATH10K_SNOC option (which selects QCOM_QMI_HELPERS) depends on
ARCH_QCOM || COMPILE_TEST in order to get wider build testing than just
the unusual QCOM architecture build, while the QCOM_QMI_HELPERS option
doesn't have that COMPILE_TEST option and is limited to only ARCH_QCOM.
As a result, a "make allmodconfig" complains
WARNING: unmet direct dependencies detected for QCOM_QMI_HELPERS
Depends on [n]: ARCH_QCOM && NET [=y]
Selected by [m]:
- ATH10K_SNOC [=m] && NETDEVICES [=y] && WLAN [=y] && WLAN_VENDOR_ATH [=y] && ATH10K [=m] && (ARCH_QCOM || COMPILE_TEST [=y])
Fix the config-time warning by making QCOM_QMI_HELPERS available when
COMPILE_TEST, since the result seems to build fine.
Cc: Bjorn Andersson <bjorn.andersson@linaro.org> Cc: Govind Singh <govinds@codeaurora.org> Cc: Kalle Valo <kvalo@codeaurora.org> Cc: David Miller <davem@davemloft.net> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
1) Add VF IPSEC offload support in ixgbe, from Shannon Nelson.
2) Add zero-copy AF_XDP support to i40e, from Björn Töpel.
3) All in-tree drivers are converted to {g,s}et_link_ksettings() so we
can get rid of the {g,s}et_settings ethtool callbacks, from Michal
Kubecek.
4) Add software timestamping to veth driver, from Michael Walle.
5) More work to make packet classifiers and actions lockless, from Vlad
Buslov.
6) Support sticky FDB entries in bridge, from Nikolay Aleksandrov.
7) Add ipv6 version of IP_MULTICAST_ALL sockopt, from Andre Naujoks.
8) Support batching of XDP buffers in vhost_net, from Jason Wang.
9) Add flow dissector BPF hook, from Petar Penkov.
10) i40e vf --> generic iavf conversion, from Jesse Brandeburg.
11) Add NLA_REJECT netlink attribute policy type, to signal when users
provide attributes in situations which don't make sense. From
Johannes Berg.
12) Switch TCP and fair-queue scheduler over to earliest departure time
model. From Eric Dumazet.
13) Improve guest receive performance by doing rx busy polling in tx
path of vhost networking driver, from Tonghao Zhang.
14) Add per-cgroup local storage to bpf
15) Add reference tracking to BPF, from Joe Stringer. The verifier can
now make sure that references taken to objects are properly released
by the program.
16) Support in-place encryption in TLS, from Vakul Garg.
17) Add new taprio packet scheduler, from Vinicius Costa Gomes.
18) Lots of selftests additions, too numerous to mention one by one here
but all of which are very much appreciated.
19) Support offloading of eBPF programs containing BPF to BPF calls in
nfp driver, frm Quentin Monnet.
20) Move dpaa2_ptp driver out of staging, from Yangbo Lu.
21) Lots of u32 classifier cleanups and simplifications, from Al Viro.
22) Add new strict versions of netlink message parsers, and enable them
for some situations. From David Ahern.
23) Evict neighbour entries on carrier down, also from David Ahern.
24) Support BPF sk_msg verdict programs with kTLS, from Daniel Borkmann
and John Fastabend.
25) Add support for filtering route dumps, from David Ahern.
26) New igc Intel driver for 2.5G parts, from Sasha Neftin et al.
27) Allow vxlan enslavement to bridges in mlxsw driver, from Ido
Schimmel.
28) Add queue and stack map types to eBPF, from Mauricio Vasquez B.
29) Add back byte-queue-limit support to r8169, with all the bug fixes
in other areas of the driver it works now! From Florian Westphal and
Heiner Kallweit.
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next: (2147 commits)
tcp: add tcp_reset_xmit_timer() helper
qed: Fix static checker warning
Revert "be2net: remove desc field from be_eq_obj"
Revert "net: simplify sock_poll_wait"
net: socionext: Reset tx queue in ndo_stop
net: socionext: Add dummy PHY register read in phy_write()
net: socionext: Stop PHY before resetting netsec
net: stmmac: Set OWN bit for jumbo frames
arm64: dts: stratix10: Support Ethernet Jumbo frame
tls: Add maintainers
net: ethernet: ti: cpsw: unsync mcast entries while switch promisc mode
octeontx2-af: Support for NIXLF's UCAST/PROMISC/ALLMULTI modes
octeontx2-af: Support for setting MAC address
octeontx2-af: Support for changing RSS algorithm
octeontx2-af: NIX Rx flowkey configuration for RSS
octeontx2-af: Install ucast and bcast pkt forwarding rules
octeontx2-af: Add LMAC channel info to NIXLF_ALLOC response
octeontx2-af: NPC MCAM and LDATA extract minimal configuration
octeontx2-af: Enable packet length and csum validation
octeontx2-af: Support for VTAG strip and capture
...
Eric Dumazet [Tue, 23 Oct 2018 18:54:16 +0000 (11:54 -0700)]
tcp: add tcp_reset_xmit_timer() helper
With EDT model, SRTT no longer is inflated by pacing delays.
This means that RTO and some other xmit timers might be setup
incorrectly. This is particularly visible with either :
- Very small enforced pacing rates (SO_MAX_PACING_RATE)
- Reduced rto (from the default 200 ms)
This can lead to TCP flows aborts in the worst case,
or spurious retransmits in other cases.
For example, this session gets far more throughput
than the requested 80kbit :
$ netperf -H 127.0.0.2 -l 100 -- -q 10000
MIGRATED TCP STREAM TEST from 0.0.0.0 (0.0.0.0) port 0 AF_INET to 127.0.0.2 () port 0 AF_INET
Recv Send Send
Socket Socket Message Elapsed
Size Size Size Time Throughput
bytes bytes bytes secs. 10^6bits/sec
540000 262144 262144 104.00 2.66
With the fix :
$ netperf -H 127.0.0.2 -l 100 -- -q 10000
MIGRATED TCP STREAM TEST from 0.0.0.0 (0.0.0.0) port 0 AF_INET to 127.0.0.2 () port 0 AF_INET
Recv Send Send
Socket Socket Message Elapsed
Size Size Size Time Throughput
bytes bytes bytes secs. 10^6bits/sec
540000 262144 262144 104.00 0.12
EDT allows for better control of rtx timers, since TCP has
a better idea of the earliest departure time of each skb
in the rtx queue. We only have to eventually add to the
timer the difference of the EDT time with current time.
Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Steve French [Fri, 19 Oct 2018 22:14:32 +0000 (17:14 -0500)]
smb3: show number of current open files in /proc/fs/cifs/Stats
To allow better debugging (for example applications with
handle leaks, or complex reconnect scenarios) display the
number of open files (on the client) and number of open
server file handles for each tcon in /proc/fs/cifs/Stats.
Note that open files on server is one larger than local
due to handle caching (in this case of the root of
the share). In this example there are two local
open files, and three (two file and one directory handle)
open on the server.
Sample output:
$ cat /proc/fs/cifs/Stats
Resources in use
CIFS Session: 1
Share (unique mount targets): 2
SMB Request/Response Buffer: 1 Pool size: 5
SMB Small Req/Resp Buffer: 1 Pool size: 30
Operations (MIDs): 0
0 session 0 share reconnects
Total vfs operations: 36 maximum at one time: 2
1) \\localhost\test
SMBs: 69
Bytes read: 27 Bytes written: 0
Open files: 2 total (local), 3 open on server
TreeConnects: 1 total 0 failed
TreeDisconnects: 0 total 0 failed
Creates: 19 total 0 failed Closes: 16 total 0 failed
...
Signed-off-by: Steve French <stfrench@microsoft.com>
Steve French [Fri, 19 Oct 2018 06:58:22 +0000 (01:58 -0500)]
cifs: fallback to older infolevels on findfirst queryinfo retry
In cases where queryinfo fails, we have cases in cifs (vers=1.0)
where with backupuid mounts we retry the query info with findfirst.
This doesn't work to some NetApp servers which don't support
WindowsXP (and later) infolevel 261 (SMB_FIND_FILE_ID_FULL_DIR_INFO)
so in this case use other info levels (in this case it will usually
be level 257, SMB_FIND_FILE_DIRECTORY_INFO).
(Also fixes some indentation)
See kernel bugzilla 201435
Signed-off-by: Steve French <stfrench@microsoft.com>
Steve French [Fri, 19 Oct 2018 05:45:21 +0000 (00:45 -0500)]
smb3: do not attempt cifs operation in smb3 query info error path
If backupuid mount option is sent, we can incorrectly retry
(on access denied on query info) with a cifs (FindFirst) operation
on an smb3 mount which causes the server to force the session close.
We set backup intent on open so no need for this fallback.
See kernel bugzilla 201435
Signed-off-by: Steve French <stfrench@microsoft.com> CC: Stable <stable@vger.kernel.org> Reviewed-by: Ronnie Sahlberg <lsahlber@redhat.com>
Steve French [Fri, 19 Oct 2018 05:32:41 +0000 (00:32 -0500)]
smb3: send backup intent on compounded query info
When mounting with backupuid set, we should be setting
CREATE_OPEN_BACKUP_INTENT flag on compounded opens as well,
especially the case of compounded smb2_query_path_info.
Signed-off-by: Steve French <stfrench@microsoft.com> Reviewed-by: Ronnie Sahlberg <lsahlber@redhat.com>
Steve French [Thu, 11 Oct 2018 06:01:02 +0000 (01:01 -0500)]
cifs: track writepages in vfs operation counters
writepages and readpages operations did not call get/free_xid
so the statistics for file copy could get confusing with "vfs operations"
not increasing. Add get_xid and free_xid to cifs readpages and
writepages functions.
Signed-off-by: Steve French <stfrench@microsoft.com> Reviewed-by: Ronnie Sahlberg <lsahlber@redhat.com>
smb2: fix uninitialized variable bug in smb2_ioctl_query_info
There is a potential execution path in which variable *resp_buftype*
is passed as an argument to function free_rsp_buf(), in which it is
used in a comparison without being properly initialized previously.
Fix this by initializing variable *resp_buftype* to CIFS_NO_BUFFER
in order to avoid unpredictable or unintended results.
Addresses-Coverity-ID: 1473971 ("Uninitialized scalar variable") Fixes: c5d25bdb2967 ("cifs: add IOCTL for QUERY_INFO passthrough to userspace") Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com> Signed-off-by: Steve French <stfrench@microsoft.com> Reviewed-by: Ronnie Sahlberg <lsahlber@redhat.com>
Ronnie Sahlberg [Mon, 8 Oct 2018 00:19:58 +0000 (19:19 -0500)]
cifs: add IOCTL for QUERY_INFO passthrough to userspace
This allows userspace tools to query the raw info levels for cifs files
and process the response in userspace.
In particular this is useful for many of those data where there is no
corresponding native data structure in linux.
For example querying the security descriptor for a file and extract the
SIDs.
Signed-off-by: Ronnie Sahlberg <lsahlber@redhat.com> Signed-off-by: Steve French <stfrench@microsoft.com>
Rodrigo Freire [Sun, 7 Oct 2018 15:21:26 +0000 (12:21 -0300)]
CIFS: Print message when attempting a mount
Currently, no messages are printed when mounting a CIFS filesystem and
no debug configuration is enabled.
However, a CIFS mount information is valuable when troubleshooting
and/or forensic analyzing a system and finding out if was a CIFS
endpoint mount attempted.
Other filesystems such as XFS, EXT* does issue a printk() when mounting
their filesystems.
A terse log message is printed only if cifsFYI is not enabled. Otherwise,
the default full debug message is printed.
In order to not clutter and classify correctly the event messages, these
are logged as KERN_INFO level.
Sample mount operations:
[root@corinthians ~]# mount -o user=administrator //172.25.250.18/c$ /mnt
(non-existent system)
[root@corinthians ~]# mount -o user=administrator //172.25.250.19/c$ /mnt
(Valid system)
Kernel message log for the mount operations:
[ 450.464543] CIFS: Attempting to mount //172.25.250.18/c$
[ 456.478186] CIFS VFS: Error connecting to socket. Aborting operation.
[ 456.478381] CIFS VFS: cifs_mount failed w/return code = -113
[ 467.688866] CIFS: Attempting to mount //172.25.250.19/c$
Signed-off-by: Rodrigo Freire <rfreire@redhat.com> Signed-off-by: Steve French <stfrench@microsoft.com>
Rodrigo Freire [Sun, 7 Oct 2018 15:21:25 +0000 (12:21 -0300)]
CIFS: Adds information-level logging function
Currently, CIFS lacks a internal logging function that prints out data
when CIFS_DEBUG=n. When CIFS_DEBUG=y, the only message level for CIFS
events are KERN_ERR or KERN_DEBUG.
This patch creates cifs_info(), which is useful for printing
non-critical event messges, at either CIFS_DEBUG state.
Signed-off-by: Rodrigo Freire <rfreire@redhat.com> Signed-off-by: Steve French <stfrench@microsoft.com>
Garry McNulty [Wed, 3 Oct 2018 19:51:21 +0000 (20:51 +0100)]
fs/cifs: fix uninitialised variable warnings
In some error conditions, resp_buftype can be passed uninitialised to
free_rsp_buf(), potentially resulting in a spurious debug message.
If resp_buftype randomly had the value 1 (CIFS_SMALL_BUFFER) then this
would log a debug message.
The rsp pointer is initialised to NULL so there is no other side-effect.
Detected by CoverityScan, CID 1438585 ("Uninitialized scalar variable")
Detected by CoverityScan, CID 1438667 ("Uninitialized scalar variable")
Detected by CoverityScan, CID 1438764 ("Uninitialized scalar variable")
Signed-off-by: Garry McNulty <garrmcnu@gmail.com> Signed-off-by: Steve French <stfrench@microsoft.com> Reviewed-by: Aurelien Aptel <aaptel@suse.com>
Steve French [Sat, 22 Sep 2018 17:07:06 +0000 (12:07 -0500)]
cifs: do not return atime less than mtime
In network file system it is fairly easy for server and client
atime vs. mtime to get confused (and atime updated less frequently)
which we noticed broke some apps which expect atime >= mtime
Also ignore relatime mount option (rather than error on it) since
relatime is basically what some network server fs are doing
(relatime).
Signed-off-by: Steve French <stfrench@microsoft.com> Reviewed-by: Ronnie Sahlberg <lsahlber@redhat.com>
Steve French [Tue, 25 Sep 2018 20:33:47 +0000 (15:33 -0500)]
smb3: update default requested iosize to 4MB from 1MB for recent dialects
Modern servers often support 8MB as maximum i/o size, and we see some
performance benefits (my testing showed 1 to 13% on write paths,
and 1 to 3% on read paths for increasing the default to 4MB). If server
doesn't support larger i/o size, during negotiate protocol it is already
set correctly to the server's maximum if lower than 4MB.
Signed-off-by: Steve French <stfrench@microsoft.com> Reviewed-by: Ronnie Sahlberg <lsahlber@redhat.com>
tcon->Flags is only used by SMB1 code and changing it is not permanent
(you lose the setting on tcon reconnect).
* Move the setting to superblock flags (per mount-points).
* Make automount callback exit early when flag present
* Make dfs resolving happening in mount syscall exit early if flag present
Signed-off-by: Aurelien Aptel <aaptel@suse.com> Signed-off-by: Steve French <stfrench@microsoft.com> Acked-by: Pavel Shilovsky <pshilov@microsoft.com>
Steve French [Wed, 19 Sep 2018 07:38:17 +0000 (02:38 -0500)]
smb3: track the instance of each session for debugging
Each time we reconnect to the same server, bump an instance
counter (and display in /proc/fs/cifs/DebugData) to make it
easier to debug.
Signed-off-by: Steve French <stfrench@microsoft.com> Reviewed-by: Aurelien Aptel <aaptel@suse.com> Reviewed-by: Pavel Shilovsky <pshilov@microsoft.com>
Steve French [Tue, 18 Sep 2018 19:05:18 +0000 (14:05 -0500)]
smb3: add way to control slow response threshold for logging and stats
/proc/fs/cifs/Stats when CONFIG_CIFS_STATS2 is enabled logs 'slow'
responses, but depending on the server you are debugging a
one second timeout may be too fast, so allow setting it to
a larger number of seconds via new module parameter
/sys/module/cifs/parameters/slow_rsp_threshold
or via modprobe:
slow_rsp_threshold:Amount of time (in seconds) to wait before
logging that a response is delayed.
Default: 1 (if set to 0 disables msg). (uint)
Recommended values are 0 (disabled) to 32767 (9 hours) with
the default remaining as 1 second.
Signed-off-by: Steve French <stfrench@microsoft.com> Reviewed-by: Aurelien Aptel <aaptel@suse.com>
Steve French [Sat, 15 Sep 2018 19:07:09 +0000 (14:07 -0500)]
cifs: protect against server returning invalid file system block size
For a network file system we generally prefer large i/o, but
if the server returns invalid file system block/sector sizes
in cifs (vers=1.0) QFSInfo then set block size to a default
of a reasonable minimum (4K).
Reported-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Steve French <stfrench@microsoft.com> Reviewed-by: Aurelien Aptel <aaptel@suse.com>
Steve French [Tue, 28 Aug 2018 21:14:21 +0000 (16:14 -0500)]
SMB3: Backup intent flag missing from compounded ops
When "backup intent" is requested on the mount (e.g. backupuid or
backupgid mount options), the corresponding flag was missing from
some of the new compounding operations as well (now that
open_query_close is gone).
Related to kernel bugzilla #200953
Reported-and-tested-by: <whh@rubrik.com> Signed-off-by: Steve French <stfrench@microsoft.com> Reviewed-by: Ronnie Sahlberg <lsahlber@redhat.com>
Ronnie Sahlberg [Mon, 3 Sep 2018 03:33:47 +0000 (13:33 +1000)]
cifs: remove the is_falloc argument to SMB2_set_eof
We never pass is_falloc==true here anyway and if we ever need to support
is_falloc in the future, SMB2_set_eof is such a trivial wrapper around
send_set_info() that we can/should just create a differently named wrapper
for that new functionality.
Signed-off-by: Ronnie Sahlberg <lsahlber@redhat.com> Signed-off-by: Steve French <stfrench@microsoft.com>
Ronnie Sahlberg [Mon, 3 Sep 2018 03:33:46 +0000 (13:33 +1000)]
cifs: change SMB2_OP_SET_EOF to use compounding
This changes SMB2_OP_SET_EOF to use compounding in some situations.
This is part of the path based API to truncate a file.
Most of the time this will however not be invoked for SMB2 since
cifs_set_file_size() will as far as I can tell almost always just
open the file synchronously and switch to the handle based truncate
code path, thus bypassing the compounding we add here.
Rewriting cifs_set_file_size() and make that whole pile of code more
compounding friendly, and also easier to read and understand, is a
different project though and not for this patch.
Signed-off-by: Ronnie Sahlberg <lsahlber@redhat.com> Signed-off-by: Steve French <stfrench@microsoft.com>
Ronnie Sahlberg [Wed, 10 Oct 2018 05:29:06 +0000 (15:29 +1000)]
cifs: fix a credits leak for compund commands
When processing the mids for compounds we would only add credits based on
the last successful mid in the compound which would leak credits and
eventually triggering a re-connect.
Fix this by splitting the mid processing part into two loops instead of one
where the first loop just waits for all mids and then counts how many
credits we were granted for the whole compound.
Signed-off-by: Ronnie Sahlberg <lsahlber@redhat.com> Signed-off-by: Steve French <stfrench@microsoft.com>
Steve French [Sat, 1 Sep 2018 06:10:17 +0000 (01:10 -0500)]
smb3: add tracepoint to catch cases where credit refund of failed op overlaps reconnect
Add tracepoint to catch potential cases where a pending operation overlapping a
reconnect could fail and incorrectly refund its credits causing the client
to think it has more credits available than the server thinks it does.
Signed-off-by: Steve French <stfrench@microsoft.com> Reviewed-by: Ronnie Sahlberg <lsahlber@redhat.com>
Steve French [Thu, 13 Sep 2018 20:12:34 +0000 (15:12 -0500)]
smb3: do not display confusing message on mount to Azure servers
Some servers (e.g. Azure) return "STATUS_NOT_IMPLEMENTED" rather
than "STATUS_INVALID_DEVICE_REQUEST" on query network interface
info at mount. This shouldn't cause us to log a warning message
automatically. Don't log this unless noisier cifsFYI is enabled.
Signed-off-by: Steve French <stfrench@microsoft.com> Reviewed-by: Ronnie Sahlberg <lsahlber@redhat.com>
If a cgroup has many tasks with many open file descriptors then we would
end up in a large loop without any rescheduling point throught the
operation. Add cond_resched once per task.
Signed-off-by: Michal Hocko <mhocko@suse.com> Signed-off-by: Tejun Heo <tj@kernel.org>
Linus Torvalds [Tue, 23 Oct 2018 19:02:03 +0000 (20:02 +0100)]
Merge branch 'parisc-4.20-1' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux
Pull parisc updates from Helge Deller:
"Lots of small fixes and enhancements, most noteably:
- Many TLB and cache flush optimizations (Dave)
- Fixed HPMC/crash handler on 64-bit kernel (Dave and myself)
- Added alternative infrastructre. The kernel now live-patches itself
for various situations, e.g. replace SMP code when running on one
CPU only or drop cache flushes when system has no cache installed.
- vmlinuz now contains a full copy of the compressed vmlinux file.
This simplifies debugging the currently booted kernel.
- Unused driver removal (Christoph)
- Reduced warnings of Dino PCI bridge when running in qemu
- Removed gcc version check (Masahiro)"
* 'parisc-4.20-1' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux: (23 commits)
parisc: Retrieve and display the PDC PAT capabilities
parisc: Optimze cache flush algorithms
parisc: Remove pte_inserted define
parisc: Add PDC PAT cell_info() and pd_get_pdc_revisions() functions
parisc: Drop two instructions from pte lookup code
parisc: Use zdep for shlw macro on PA1.1 and PA2.0
parisc: Add alternative coding infrastructure
parisc: Include compressed vmlinux file in vmlinuz boot kernel
extract-vmlinux: Check for uncompressed image as fallback
parisc: Fix address in HPMC IVA
parisc: Fix exported address of os_hpmc handler
parisc: Fix map_pages() to not overwrite existing pte entries
parisc: Purge TLB entries after updating page table entry and set page accessed flag in TLB handler
parisc: Release spinlocks using ordered store
parisc: Ratelimit dino stuck interrupt warnings
parisc: dino: Utilize DINO_MASK_IRQ() macro
parisc: Clean up crash header output
parisc: Add SYSTEM_INFO and REGISTER TOC PAT functions
parisc: Remove PTE load and fault check from L2_ptep macro
parisc: Reorder TLB flush timing calculation
...
Linus Torvalds [Tue, 23 Oct 2018 18:32:10 +0000 (19:32 +0100)]
Merge branch 'for-linus' of git://git.armlinux.org.uk/~rmk/linux-arm
Pull ARM updates from Russell King:
"The main item in this pull request are the Spectre variant 1.1 fixes
from Julien Thierry.
A few other patches to improve various areas, and removal of some
obsolete mcount bits and a redundant kbuild conditional"
* 'for-linus' of git://git.armlinux.org.uk/~rmk/linux-arm:
ARM: 8802/1: Call syscall_trace_exit even when system call skipped
ARM: 8797/1: spectre-v1.1: harden __copy_to_user
ARM: 8796/1: spectre-v1,v1.1: provide helpers for address sanitization
ARM: 8795/1: spectre-v1.1: use put_user() for __put_user()
ARM: 8794/1: uaccess: Prevent speculative use of the current addr_limit
ARM: 8793/1: signal: replace __put_user_error with __put_user
ARM: 8792/1: oabi-compat: copy oabi events using __copy_to_user()
ARM: 8791/1: vfp: use __copy_to_user() when saving VFP state
ARM: 8790/1: signal: always use __copy_to_user to save iwmmxt context
ARM: 8789/1: signal: copy registers using __copy_to_user()
ARM: 8801/1: makefile: use ARMv3M mode for RiscPC
ARM: 8800/1: use choice for kernel unwinders
ARM: 8798/1: remove unnecessary KBUILD_SRC ifeq conditional
ARM: 8788/1: ftrace: remove old mcount support
ARM: 8786/1: Debug kernel copy by printing
Johan Hovold [Mon, 27 Aug 2018 08:21:53 +0000 (10:21 +0200)]
power: supply: twl4030-charger: fix OF sibling-node lookup
Use the new of_get_compatible_child() helper to lookup the usb sibling
node instead of using of_find_compatible_node(), which searches the
entire tree from a given start node and thus can return an unrelated
(non-sibling) node.
This also addresses a potential use-after-free (e.g. after probe
deferral) as the tree-wide helper drops a reference to its first
argument (i.e. the parent device node).
While at it, also fix the related phy-node reference leak.
Fixes: f5e4edb8c888 ("power: twl4030_charger: find associated phy by more reliable means.") Cc: stable <stable@vger.kernel.org> # 4.2 Cc: NeilBrown <neilb@suse.de> Cc: Felipe Balbi <felipe.balbi@linux.intel.com> Cc: Sebastian Reichel <sre@kernel.org> Reviewed-by: Sebastian Reichel <sre@kernel.org> Signed-off-by: Johan Hovold <johan@kernel.org> Signed-off-by: Rob Herring <robh@kernel.org>
Johan Hovold [Mon, 27 Aug 2018 08:21:52 +0000 (10:21 +0200)]
NFC: nfcmrvl_uart: fix OF child-node lookup
Use the new of_get_compatible_child() helper to lookup the nfc child
node instead of using of_find_compatible_node(), which searches the
entire tree from a given start node and thus can return an unrelated
(i.e. non-child) node.
This also addresses a potential use-after-free (e.g. after probe
deferral) as the tree-wide helper drops a reference to its first
argument (i.e. the parent node).
Fixes: e097dc624f78 ("NFC: nfcmrvl: add UART driver") Fixes: d8e018c0b321 ("NFC: nfcmrvl: update device tree bindings for Marvell NFC") Cc: stable <stable@vger.kernel.org> # 4.2 Cc: Vincent Cuissard <cuissard@marvell.com> Cc: Samuel Ortiz <sameo@linux.intel.com> Signed-off-by: Johan Hovold <johan@kernel.org> Signed-off-by: Rob Herring <robh@kernel.org>
Johan Hovold [Mon, 27 Aug 2018 08:21:51 +0000 (10:21 +0200)]
net: stmmac: dwmac-sun8i: fix OF child-node lookup
Use the new of_get_compatible_child() helper to lookup the mdio-internal
child node instead of using of_find_compatible_node(), which searches
the entire tree from a given start node and thus can return an unrelated
(i.e. non-child) node.
This also addresses a potential use-after-free (e.g. after probe
deferral) as the tree-wide helper drops a reference to its first
argument (i.e. the mdio-mux node). Fortunately, this was inadvertently
balanced by a failure to drop the mdio-mux reference after lookup.
While at it, also fix the related mdio-internal- and phy-node reference
leaks.
Fixes: 634db83b8265 ("net: stmmac: dwmac-sun8i: Handle integrated/external MDIOs") Tested-by: Corentin Labbe <clabbe.montjoie@gmail.com> Cc: Andrew Lunn <andrew@lunn.ch> Cc: Giuseppe Cavallaro <peppe.cavallaro@st.com> Cc: Alexandre Torgue <alexandre.torgue@st.com> Cc: Jose Abreu <joabreu@synopsys.com> Cc: David S. Miller <davem@davemloft.net> Signed-off-by: Johan Hovold <johan@kernel.org> Signed-off-by: Rob Herring <robh@kernel.org>
Johan Hovold [Mon, 27 Aug 2018 08:21:50 +0000 (10:21 +0200)]
net: bcmgenet: fix OF child-node lookup
Use the new of_get_compatible_child() helper to lookup the mdio child
node instead of using of_find_compatible_node(), which searches the
entire tree from a given start node and thus can return an unrelated
(i.e. non-child) node.
This also addresses a potential use-after-free (e.g. after probe
deferral) as the tree-wide helper drops a reference to its first
argument (i.e. the node of the device being probed).
Fixes: aa09677cba42 ("net: bcmgenet: add MDIO routines") Cc: stable <stable@vger.kernel.org> # 3.15 Cc: David S. Miller <davem@davemloft.net> Reviewed-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: Johan Hovold <johan@kernel.org> Signed-off-by: Rob Herring <robh@kernel.org>
Johan Hovold [Mon, 27 Aug 2018 08:21:47 +0000 (10:21 +0200)]
drm/msm: fix OF child-node lookup
Use the new of_get_compatible_child() helper to lookup the legacy
pwrlevels child node instead of using of_find_compatible_node(), which
searches the entire tree from a given start node and thus can return an
unrelated (i.e. non-child) node.
This also addresses a potential use-after-free (e.g. after probe
deferral) as the tree-wide helper drops a reference to its first
argument (i.e. the probed device's node).
While at it, also fix the related child-node reference leak.
Fixes: e2af8b6b0ca1 ("drm/msm: gpu: Use OPP tables if we can") Cc: stable <stable@vger.kernel.org> # 4.12 Cc: Jordan Crouse <jcrouse@codeaurora.org> Cc: Rob Clark <robdclark@gmail.com> Cc: David Airlie <airlied@linux.ie> Signed-off-by: Johan Hovold <johan@kernel.org> Signed-off-by: Rob Herring <robh@kernel.org>
Johan Hovold [Mon, 27 Aug 2018 08:21:46 +0000 (10:21 +0200)]
drm/mediatek: fix OF sibling-node lookup
Use the new of_get_compatible_child() helper to lookup the sibling
instead of using of_find_compatible_node(), which searches the entire
tree from a given start node and thus can return an unrelated (i.e.
non-sibling) node.
This also addresses a potential use-after-free (e.g. after probe
deferral) as the tree-wide helper drops a reference to its first
argument (i.e. the parent device node).
While at it, also fix the related cec-node reference leak.
Fixes: 8f83f26891e1 ("drm/mediatek: Add HDMI support") Cc: stable <stable@vger.kernel.org> # 4.8 Cc: Junzhi Zhao <junzhi.zhao@mediatek.com> Cc: Philipp Zabel <p.zabel@pengutronix.de> Cc: CK Hu <ck.hu@mediatek.com> Cc: David Airlie <airlied@linux.ie> Signed-off-by: Johan Hovold <johan@kernel.org> Signed-off-by: Rob Herring <robh@kernel.org>
Linus Torvalds [Tue, 23 Oct 2018 18:07:25 +0000 (19:07 +0100)]
Merge branch 'x86-vdso-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 vdso updates from Ingo Molnar:
"Two main changes:
- Cleanups, simplifications and CLOCK_TAI support (Thomas Gleixner)
- Improve code generation (Andy Lutomirski)"
* 'x86-vdso-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/vdso: Rearrange do_hres() to improve code generation
x86/vdso: Document vgtod_ts better
x86/vdso: Remove "memory" clobbers in the vDSO syscall fallbacks
x66/vdso: Add CLOCK_TAI support
x86/vdso: Move cycle_last handling into the caller
x86/vdso: Simplify the invalid vclock case
x86/vdso: Replace the clockid switch case
x86/vdso: Collapse coarse functions
x86/vdso: Collapse high resolution functions
x86/vdso: Introduce and use vgtod_ts
x86/vdso: Use unsigned int consistently for vsyscall_gtod_data:: Seq
x86/vdso: Enforce 64bit clocksource
x86/time: Implement clocksource_arch_init()
clocksource: Provide clocksource_arch_init()
Rahul Verma [Tue, 23 Oct 2018 15:04:24 +0000 (08:04 -0700)]
qed: Fix static checker warning
Static Checker Warnings:
drivers/net/ethernet/qlogic/qed/qed_main.c:1510 qed_fill_link_capability()
error: uninitialized symbol 'tcvr_state'.
drivers/net/ethernet/qlogic/qed/qed_mcp.c:1951 qed_mcp_trans_speed_mask()
error: uninitialized symbol 'transceiver_state'.
drivers/net/ethernet/qlogic/qed/qed_mcp.c:1951 qed_mcp_trans_speed_mask()
error: uninitialized symbol 'transceiver_type'.
Symbols tcvr_state, transceiver_state and transceiver_type
are initialized with respective default state.
Fixes: c56a8be7e7aa ("qed: Add supported link and advertise link to display in ethtool.") Reported-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Rahul Verma <Rahul.Verma@cavium.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Ivan Vecera [Tue, 23 Oct 2018 14:40:26 +0000 (16:40 +0200)]
Revert "be2net: remove desc field from be_eq_obj"
The mentioned commit needs to be reverted because we cannot pass
string allocated on stack to request_irq(). This function stores
uses this pointer for later use (e.g. /proc/interrupts) so we need
to keep this string persistently.
Fixes: d6d9704af8f4 ("be2net: remove desc field from be_eq_obj") Signed-off-by: Ivan Vecera <ivecera@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
This broke tcp_poll for SMC fallback: An AF_SMC socket establishes an
internal TCP socket for the initial handshake with the remote peer.
Whenever the SMC connection can not be established this TCP socket is
used as a fallback. All socket operations on the SMC socket are then
forwarded to the TCP socket. In case of poll, the file->private_data
pointer references the SMC socket because the TCP socket has no file
assigned. This causes tcp_poll to wait on the wrong socket.
Signed-off-by: Karsten Graul <kgraul@linux.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Tue, 23 Oct 2018 17:55:35 +0000 (10:55 -0700)]
Merge branch 'netsec-fixes'
Masahisa Kojima says:
====================
Bugfix for the netsec driver
This patch series include bugfix for the netsec ethernet
controller driver, fix the problem in interface down/up.
changes in v2:
- change the place to perform the PHY power down
- use the MACROs defiend in include/uapi/linux/mii.h
- update commit comment
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Masahisa Kojima [Tue, 23 Oct 2018 11:24:28 +0000 (20:24 +0900)]
net: socionext: Reset tx queue in ndo_stop
We observed that packets and bytes count are not reset
when user performs interface down. Eventually, tx queue is
exhausted and packets will not be sent out.
To avoid this problem, resets tx queue in ndo_stop.
Fixes: 533dd11a12f6 ("net: socionext: Add Synquacer NetSec driver") Signed-off-by: Masahisa Kojima <masahisa.kojima@linaro.org> Signed-off-by: Yoshitoyo Osaki <osaki.yoshitoyo@socionext.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Masahisa Kojima [Tue, 23 Oct 2018 11:24:27 +0000 (20:24 +0900)]
net: socionext: Add dummy PHY register read in phy_write()
There is a compatibility issue between RTL8211E implemented
in Developerbox and netsec ethernet controller IP.
Our MDIO controller stops MDC clock right after the write
access, but RTL8211E expects MDC clock must be kept toggling
for several clock cycle with MDIO high before entering
the IDLE state. Without keeping clock after write access,
write access is not correctly handled and register is not
updated.
To meet this requirement, netsec driver needs to issue dummy
read(e.g. read PHYID1(offset 0x2) register) right after write
access, to keep MDC clock.
We think this compatibility issue is a problem specific to
our MDIO controller and RTL8211E.
Fixes: 533dd11a12f6 ("net: socionext: Add Synquacer NetSec driver") Signed-off-by: Masahisa Kojima <masahisa.kojima@linaro.org> Signed-off-by: Yoshitoyo Osaki <osaki.yoshitoyo@socionext.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Masahisa Kojima [Tue, 23 Oct 2018 11:24:26 +0000 (20:24 +0900)]
net: socionext: Stop PHY before resetting netsec
In ndo_stop, driver resets the netsec ethernet controller IP.
When the netsec IP is reset, HW running mode turns to NRM mode
and driver has to wait until this mode transition completes.
But mode transition to NRM will not complete if the PHY is
in normal operation state. Netsec IP requires PHY is in
power down state when it is reset.
This modification stops the PHY before resetting netsec.
Together with this modification, phy_addr is stored in netsec_priv
structure because ndev->phydev is not yet ready in ndo_init.
Fixes: 533dd11a12f6 ("net: socionext: Add Synquacer NetSec driver") Signed-off-by: Masahisa Kojima <masahisa.kojima@linaro.org> Signed-off-by: Yoshitoyo Osaki <osaki.yoshitoyo@socionext.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Linus Torvalds [Tue, 23 Oct 2018 17:43:04 +0000 (18:43 +0100)]
Merge branch 'x86-pti-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 pti updates from Ingo Molnar:
"The main changes:
- Make the IBPB barrier more strict and add STIBP support (Jiri
Kosina)
- Micro-optimize and clean up the entry code (Andy Lutomirski)
- ... plus misc other fixes"
* 'x86-pti-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/speculation: Propagate information about RSB filling mitigation to sysfs
x86/speculation: Enable cross-hyperthread spectre v2 STIBP mitigation
x86/speculation: Apply IBPB more strictly to avoid cross-process data leak
x86/speculation: Add RETPOLINE_AMD support to the inline asm CALL_NOSPEC variant
x86/CPU: Fix unused variable warning when !CONFIG_IA32_EMULATION
x86/pti/64: Remove the SYSCALL64 entry trampoline
x86/entry/64: Use the TSS sp2 slot for SYSCALL/SYSRET scratch space
x86/entry/64: Document idtentry
Linus Torvalds [Tue, 23 Oct 2018 17:17:11 +0000 (18:17 +0100)]
Merge branch 'x86-platform-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 platform updates from Ingo Molnar:
"Two minor OLPC changes: a build fix and a new quirk"
* 'x86-platform-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/olpc: Fix build error with CONFIG_MFD_CS5535=m
x86/olpc: Indicate that legacy PC XO-1 platform should not register RTC
Linus Torvalds [Tue, 23 Oct 2018 16:54:58 +0000 (17:54 +0100)]
Merge branch 'x86-paravirt-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 paravirt updates from Ingo Molnar:
"Two main changes:
- Remove no longer used parts of the paravirt infrastructure and put
large quantities of paravirt ops under a new config option
PARAVIRT_XXL=y, which is selected by XEN_PV only. (Joergen Gross)
- Enable PV spinlocks on Hyperv (Yi Sun)"
* 'x86-paravirt-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/hyperv: Enable PV qspinlock for Hyper-V
x86/hyperv: Add GUEST_IDLE_MSR support
x86/paravirt: Clean up native_patch()
x86/paravirt: Prevent redefinition of SAVE_FLAGS macro
x86/xen: Make xen_reservation_lock static
x86/paravirt: Remove unneeded mmu related paravirt ops bits
x86/paravirt: Move the Xen-only pv_mmu_ops under the PARAVIRT_XXL umbrella
x86/paravirt: Move the pv_irq_ops under the PARAVIRT_XXL umbrella
x86/paravirt: Move the Xen-only pv_cpu_ops under the PARAVIRT_XXL umbrella
x86/paravirt: Move items in pv_info under PARAVIRT_XXL umbrella
x86/paravirt: Introduce new config option PARAVIRT_XXL
x86/paravirt: Remove unused paravirt bits
x86/paravirt: Use a single ops structure
x86/paravirt: Remove clobbers from struct paravirt_patch_site
x86/paravirt: Remove clobbers parameter from paravirt patch functions
x86/paravirt: Make paravirt_patch_call() and paravirt_patch_jmp() static
x86/xen: Add SPDX identifier in arch/x86/xen files
x86/xen: Link platform-pci-unplug.o only if CONFIG_XEN_PVHVM
x86/xen: Move pv specific parts of arch/x86/xen/mmu.c to mmu_pv.c
x86/xen: Move pv irq related functions under CONFIG_XEN_PV umbrella
Trond Myklebust [Fri, 12 Oct 2018 17:28:26 +0000 (13:28 -0400)]
SUNRPC: Simplify lookup code
We no longer need to worry about whether or not the entry is hashed in
order to figure out if the contents are valid. We only care whether or
not the refcount is non-zero.
Linus Torvalds [Tue, 23 Oct 2018 16:05:28 +0000 (17:05 +0100)]
Merge branch 'x86-mm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 mm updates from Ingo Molnar:
"Lots of changes in this cycle:
- Lots of CPA (change page attribute) optimizations and related
cleanups (Thomas Gleixner, Peter Zijstra)
- Make lazy TLB mode even lazier (Rik van Riel)
- Fault handler cleanups and improvements (Dave Hansen)
- kdump, vmcore: Enable kdumping encrypted memory with AMD SME
enabled (Lianbo Jiang)
- Clean up VM layout documentation (Baoquan He, Ingo Molnar)
- ... plus misc other fixes and enhancements"
* 'x86-mm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (51 commits)
x86/stackprotector: Remove the call to boot_init_stack_canary() from cpu_startup_entry()
x86/mm: Kill stray kernel fault handling comment
x86/mm: Do not warn about PCI BIOS W+X mappings
resource: Clean it up a bit
resource: Fix find_next_iomem_res() iteration issue
resource: Include resource end in walk_*() interfaces
x86/kexec: Correct KEXEC_BACKUP_SRC_END off-by-one error
x86/mm: Remove spurious fault pkey check
x86/mm/vsyscall: Consider vsyscall page part of user address space
x86/mm: Add vsyscall address helper
x86/mm: Fix exception table comments
x86/mm: Add clarifying comments for user addr space
x86/mm: Break out user address space handling
x86/mm: Break out kernel address space handling
x86/mm: Clarify hardware vs. software "error_code"
x86/mm/tlb: Make lazy TLB mode lazier
x86/mm/tlb: Add freed_tables element to flush_tlb_info
x86/mm/tlb: Add freed_tables argument to flush_tlb_mm_range
smp,cpumask: introduce on_each_cpu_cond_mask
smp: use __cpumask_set_cpu in on_each_cpu_cond
...
Linus Torvalds [Tue, 23 Oct 2018 15:47:41 +0000 (16:47 +0100)]
Merge branch 'x86-hyperv-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 hyperv updates from Ingo Molnar:
"Two small changes: a boot warning removal and a minor cleanup"
* 'x86-hyperv-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/hyperv: Remove unused include
x86/hyperv: Suppress "PCI: Fatal: No config space access function found"
Linus Torvalds [Tue, 23 Oct 2018 15:31:33 +0000 (16:31 +0100)]
Merge branch 'x86-grub2-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 grub2 updates from Ingo Molnar:
"This extends the x86 boot protocol to include an address for the RSDP
table - utilized by Xen currently.
Matching Grub2 patches are pending as well. (Juergen Gross)"
* 'x86-grub2-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/acpi, x86/boot: Take RSDP address for boot params if available
x86/boot: Add ACPI RSDP address to setup_header
x86/xen: Fix boot loader version reported for PVH guests
Linus Torvalds [Tue, 23 Oct 2018 15:16:40 +0000 (16:16 +0100)]
Merge branch 'x86-cpu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 cpu updates from Ingo Molnar:
"The main changes in this cycle were:
- Add support for the "Dhyana" x86 CPUs by Hygon: these are licensed
based on the AMD Zen architecture, and are built and sold in China,
for domestic datacenter use. The code is pretty close to AMD
support, mostly with a few quirks and enumeration differences. (Pu
Wen)
- Enable CPUID support on Cyrix 6x86/6x86L processors"
* 'x86-cpu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
tools/cpupower: Add Hygon Dhyana support
cpufreq: Add Hygon Dhyana support
ACPI: Add Hygon Dhyana support
x86/xen: Add Hygon Dhyana support to Xen
x86/kvm: Add Hygon Dhyana support to KVM
x86/mce: Add Hygon Dhyana support to the MCA infrastructure
x86/bugs: Add Hygon Dhyana to the respective mitigation machinery
x86/apic: Add Hygon Dhyana support
x86/pci, x86/amd_nb: Add Hygon Dhyana support to PCI and northbridge
x86/amd_nb: Check vendor in AMD-only functions
x86/alternative: Init ideal_nops for Hygon Dhyana
x86/events: Add Hygon Dhyana support to PMU infrastructure
x86/smpboot: Do not use BSP INIT delay and MWAIT to idle on Dhyana
x86/cpu/mtrr: Support TOP_MEM2 and get MTRR number
x86/cpu: Get cache info and setup cache cpumap for Hygon Dhyana
x86/cpu: Create Hygon Dhyana architecture support file
x86/CPU: Change query logic so CPUID is enabled before testing
x86/CPU: Use correct macros for Cyrix calls
Linus Torvalds [Tue, 23 Oct 2018 15:04:22 +0000 (16:04 +0100)]
Merge branch 'x86-build-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 build update from Ingo Molnar:
"A small cleanup to x86 Kconfigs"
* 'x86-build-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/kconfig: Remove redundant 'default n' lines from all x86 Kconfig's
Linus Torvalds [Tue, 23 Oct 2018 14:54:42 +0000 (15:54 +0100)]
Merge branch 'x86-boot-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 boot updates from Ingo Molnar:
"Two cleanups and a bugfix for a rare boot option combination"
* 'x86-boot-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/boot/KASLR: Remove return value from handle_mem_options()
x86/corruption-check: Use pr_*() instead of printk()
x86/corruption-check: Fix panic in memory_corruption_check() when boot option without value is provided
The most common case is that vcpu->arch.dr6 and the host's %dr6 value
are not related at all because ->switch_db_regs is zero. To do this
all correctly, we must handle the case where the guest leaves an arbitrary
unused value in vcpu->arch.dr6 before disabling breakpoints again.
However, this means that vcpu->arch.dr6 is not suitable to detect the
need for a %dr6 clear.
Linus Torvalds [Tue, 23 Oct 2018 14:24:22 +0000 (15:24 +0100)]
Merge branch 'x86-asm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 asm updates from Ingo Molnar:
"The main changes in this cycle were the fsgsbase related preparatory
patches from Chang S. Bae - but there's also an optimized
memcpy_flushcache() and a cleanup for the __cmpxchg_double() assembly
glue"
* 'x86-asm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/fsgsbase/64: Clean up various details
x86/segments: Introduce the 'CPUNODE' naming to better document the segment limit CPU/node NR trick
x86/vdso: Initialize the CPU/node NR segment descriptor earlier
x86/vdso: Introduce helper functions for CPU and node number
x86/segments/64: Rename the GDT PER_CPU entry to CPU_NUMBER
x86/fsgsbase/64: Factor out FS/GS segment loading from __switch_to()
x86/fsgsbase/64: Convert the ELF core dump code to the new FSGSBASE helpers
x86/fsgsbase/64: Make ptrace use the new FS/GS base helpers
x86/fsgsbase/64: Introduce FS/GS base helper functions
x86/fsgsbase/64: Fix ptrace() to read the FS/GS base accurately
x86/asm: Use CC_SET()/CC_OUT() in __cmpxchg_double()
x86/asm: Optimize memcpy_flushcache()
Linus Torvalds [Tue, 23 Oct 2018 14:15:20 +0000 (15:15 +0100)]
Merge branch 'x86-apic-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 apic updates from Ingo Molnar:
"Improve the spreading of managed IRQs at allocation time"
* 'x86-apic-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
irq/matrix: Spread managed interrupts on allocation
irq/matrix: Split out the CPU selection code into a helper
- Topology handling improvements, in particular when CPU capacity
changes and related load-balancing fixes/improvements (Morten
Rasmussen)
- ... plus misc other improvements, fixes and updates"
* 'sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (28 commits)
sched/completions/Documentation: Add recommendation for dynamic and ONSTACK completions
sched/completions/Documentation: Clean up the document some more
sched/completions/Documentation: Fix a couple of punctuation nits
cpu/SMT: State SMT is disabled even with nosmt and without "=force"
sched/core: Fix comment regarding nr_iowait_cpu() and get_iowait_load()
sched/fair: Remove setting task's se->runnable_weight during PELT update
sched/fair: Disable LB_BIAS by default
sched/pelt: Fix warning and clean up IRQ PELT config
sched/topology: Make local variables static
sched/debug: Use symbolic names for task state constants
sched/numa: Remove unused numa_stats::nr_running field
sched/numa: Remove unused code from update_numa_stats()
sched/debug: Explicitly cast sched_feat() to bool
sched/core: Disable SD_PREFER_SIBLING on asymmetric CPU capacity domains
sched/fair: Don't move tasks to lower capacity CPUs unless necessary
sched/fair: Set rq->rd->overload when misfit
sched/fair: Wrap rq->rd->overload accesses with READ/WRITE_ONCE()
sched/core: Change root_domain->overload type to int
sched/fair: Change 'prefer_sibling' type to bool
sched/fair: Kick nohz balance if rq->misfit_task_load
...
Will Deacon [Mon, 22 Oct 2018 15:39:01 +0000 (16:39 +0100)]
Documentation/security-bugs: Clarify treatment of embargoed information
The Linux kernel security team has been accused of rejecting the idea of
security embargoes. This is incorrect, and could dissuade people from
reporting security issues to us under the false assumption that the
issue would leak prematurely.
Clarify the handling of embargoed information in our process
documentation.
Co-developed-by: Ingo Molnar <mingo@kernel.org> Acked-by: Kees Cook <keescook@chromium.org> Acked-by: Peter Zijlstra <peterz@infradead.org> Acked-by: Laura Abbott <labbott@redhat.com> Signed-off-by: Will Deacon <will.deacon@arm.com> Signed-off-by: Ingo Molnar <mingo@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Linus Torvalds [Tue, 23 Oct 2018 12:46:36 +0000 (13:46 +0100)]
Merge branch 'ras-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull RAS updates from Ingo Molnar:
"Misc smaller fixes and cleanups"
* 'ras-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/mcelog: Remove one mce_helper definition
x86/mce: Add macros for the corrected error count bit field
x86/mce: Use BIT_ULL(x) for bit mask definitions
x86/mce-inject: Reset injection struct after injection
Linus Torvalds [Tue, 23 Oct 2018 12:32:18 +0000 (13:32 +0100)]
Merge branch 'perf-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull perf updates from Ingo Molnar:
"The main updates in this cycle were:
- Lots of perf tooling changes too voluminous to list (big perf trace
and perf stat improvements, lots of libtraceevent reorganization,
etc.), so I'll list the authors and refer to the changelog for
details:
Benjamin Peterson, Jérémie Galarneau, Kim Phillips, Peter
Zijlstra, Ravi Bangoria, Sangwon Hong, Sean V Kelley, Steven
Rostedt, Thomas Gleixner, Ding Xiang, Eduardo Habkost, Thomas
Richter, Andi Kleen, Sanskriti Sharma, Adrian Hunter, Tzvetomir
Stoyanov, Arnaldo Carvalho de Melo, Jiri Olsa.
... with the bulk of the changes written by Jiri Olsa, Tzvetomir
Stoyanov and Arnaldo Carvalho de Melo.
- Continued intel_rdt work with a focus on playing well with perf
events. This also imported some non-perf RDT work due to
dependencies. (Reinette Chatre)
- Implement counter freezing for Arch Perfmon v4 (Skylake and newer).
This allows to speed up the PMI handler by avoiding unnecessary MSR
writes and make it more accurate. (Andi Kleen)
- kprobes cleanups and simplification (Masami Hiramatsu)
- Intel Goldmont PMU updates (Kan Liang)
- ... plus misc other fixes and updates"
* 'perf-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (155 commits)
kprobes/x86: Use preempt_enable() in optimized_callback()
x86/intel_rdt: Prevent pseudo-locking from using stale pointers
kprobes, x86/ptrace.h: Make regs_get_kernel_stack_nth() not fault on bad stack
perf/x86/intel: Export mem events only if there's PEBS support
x86/cpu: Drop pointless static qualifier in punit_dev_state_show()
x86/intel_rdt: Fix initial allocation to consider CDP
x86/intel_rdt: CBM overlap should also check for overlap with CDP peer
x86/intel_rdt: Introduce utility to obtain CDP peer
tools lib traceevent, perf tools: Move struct tep_handler definition in a local header file
tools lib traceevent: Separate out tep_strerror() for strerror_r() issues
perf python: More portable way to make CFLAGS work with clang
perf python: Make clang_has_option() work on Python 3
perf tools: Free temporary 'sys' string in read_event_files()
perf tools: Avoid double free in read_event_file()
perf tools: Free 'printk' string in parse_ftrace_printk()
perf tools: Cleanup trace-event-info 'tdata' leak
perf strbuf: Match va_{add,copy} with va_end
perf test: S390 does not support watchpoints in test 22
perf auxtrace: Include missing asm/bitsperlong.h to get BITS_PER_LONG
tools include: Adopt linux/bits.h
...
Linus Torvalds [Tue, 23 Oct 2018 12:08:53 +0000 (13:08 +0100)]
Merge branch 'locking-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull locking and misc x86 updates from Ingo Molnar:
"Lots of changes in this cycle - in part because locking/core attracted
a number of related x86 low level work which was easier to handle in a
single tree:
- Linux Kernel Memory Consistency Model updates (Alan Stern, Paul E.
McKenney, Andrea Parri)
- lockdep scalability improvements and micro-optimizations (Waiman
Long)
- rwsem improvements (Waiman Long)
- spinlock micro-optimization (Matthew Wilcox)
- qspinlocks: Provide a liveness guarantee (more fairness) on x86.
(Peter Zijlstra)
- Add support for relative references in jump tables on arm64, x86
and s390 to optimize jump labels (Ard Biesheuvel, Heiko Carstens)
- Be a lot less permissive on weird (kernel address) uaccess faults
on x86: BUG() when uaccess helpers fault on kernel addresses (Jann
Horn)
- macrofy x86 asm statements to un-confuse the GCC inliner. (Nadav
Amit)
- ... and a handful of other smaller changes as well"
* 'locking-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (57 commits)
locking/lockdep: Make global debug_locks* variables read-mostly
locking/lockdep: Fix debug_locks off performance problem
locking/pvqspinlock: Extend node size when pvqspinlock is configured
locking/qspinlock_stat: Count instances of nested lock slowpaths
locking/qspinlock, x86: Provide liveness guarantee
x86/asm: 'Simplify' GEN_*_RMWcc() macros
locking/qspinlock: Rework some comments
locking/qspinlock: Re-order code
locking/lockdep: Remove duplicated 'lock_class_ops' percpu array
x86/defconfig: Enable CONFIG_USB_XHCI_HCD=y
futex: Replace spin_is_locked() with lockdep
locking/lockdep: Make class->ops a percpu counter and move it under CONFIG_DEBUG_LOCKDEP=y
x86/jump-labels: Macrofy inline assembly code to work around GCC inlining bugs
x86/cpufeature: Macrofy inline assembly code to work around GCC inlining bugs
x86/extable: Macrofy inline assembly code to work around GCC inlining bugs
x86/paravirt: Work around GCC inlining bugs when compiling paravirt ops
x86/bug: Macrofy the BUG table section handling, to work around GCC inlining bugs
x86/alternatives: Macrofy lock prefixes to work around GCC inlining bugs
x86/refcount: Work around GCC inlining bug
x86/objtool: Use asm macros to work around GCC inlining bugs
...
Linus Torvalds [Tue, 23 Oct 2018 12:04:03 +0000 (13:04 +0100)]
Merge branch 'efi-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull EFI updates from Ingo Molnar:
"The main changes are:
- Add support for enlisting the help of the EFI firmware to create
memory reservations that persist across kexec.
- Add page fault handling to the runtime services support code on x86
so we can more gracefully recover from buggy EFI firmware.
- Fix command line handling on x86 for the boot path that omits the
stub's PE/COFF entry point.
- Other assorted fixes and updates"
* 'efi-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86: boot: Fix EFI stub alignment
efi/x86: Call efi_parse_options() from efi_main()
efi/x86: earlyprintk - Add 64bit efi fb address support
efi/x86: drop task_lock() from efi_switch_mm()
efi/x86: Handle page faults occurring while running EFI runtime services
efi: Make efi_rts_work accessible to efi page fault handler
efi/efi_test: add exporting ResetSystem runtime service
efi/libstub: arm: support building with clang
efi: add API to reserve memory persistently across kexec reboot
efi/arm: libstub: add a root memreserve config table
efi: honour memory reservations passed via a linux specific config table
Linus Torvalds [Tue, 23 Oct 2018 11:31:17 +0000 (12:31 +0100)]
Merge branch 'core-rcu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull RCU updates from Ingo Molnar:
"The biggest change in this cycle is the conclusion of the big
'simplify RCU to two primary flavors' consolidation work - i.e.
there's a single RCU flavor for any kernel variant (PREEMPT and
!PREEMPT):
- Consolidate the RCU-bh, RCU-preempt, and RCU-sched flavors into a
single flavor similar to RCU-sched in !PREEMPT kernels and into a
single flavor similar to RCU-preempt (but also waiting on
preempt-disabled sequences of code) in PREEMPT kernels.
This branch also includes a refactoring of
rcu_{nmi,irq}_{enter,exit}() from Byungchul Park.
- Now that there is only one RCU flavor in any given running kernel,
the many "rsp" pointers are no longer required, and this cleanup
series removes them.
- This branch carries out additional cleanups made possible by the
RCU flavor consolidation, including inlining now-trivial
functions, updating comments and definitions, and removing
now-unneeded rcutorture scenarios.
- Now that there is only one flavor of RCU in any running kernel,
there is also only on rcu_data structure per CPU. This means that
the rcu_dynticks structure can be merged into the rcu_data
structure, a task taken on by this branch. This branch also
contains a -rt-related fix from Mike Galbraith.
There were also other updates:
- Documentation updates, including some good-eye catches from Joel
Fernandes.
- SRCU updates, most notably changes enabling call_srcu() to be
invoked very early in the boot sequence.
- Torture-test updates, including some preliminary work towards
making rcutorture better able to find problems that result in
insufficient grace-period forward progress.
- Initial changes to RCU to better promote forward progress of grace
periods, including fixing a bug found by Marius Hillenbrand and
David Woodhouse, with the fix suggested by Peter Zijlstra"
* 'core-rcu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (140 commits)
srcu: Make early-boot call_srcu() reuse workqueue lists
rcutorture: Test early boot call_srcu()
srcu: Make call_srcu() available during very early boot
rcu: Convert rcu_state.ofl_lock to raw_spinlock_t
rcu: Remove obsolete ->dynticks_fqs and ->cond_resched_completed
rcu: Switch ->dynticks to rcu_data structure, remove rcu_dynticks
rcu: Switch dyntick nesting counters to rcu_data structure
rcu: Switch urgent quiescent-state requests to rcu_data structure
rcu: Switch lazy counts to rcu_data structure
rcu: Switch last accelerate/advance to rcu_data structure
rcu: Switch ->tick_nohz_enabled_snap to rcu_data structure
rcu: Merge rcu_dynticks structure into rcu_data structure
rcu: Remove unused rcu_dynticks_snap() from Tiny RCU
rcu: Convert "1UL << x" to "BIT(x)"
rcu: Avoid resched_cpu() when rescheduling the current CPU
rcu: More aggressively enlist scheduler aid for nohz_full CPUs
rcu: Compute jiffies_till_sched_qs from other kernel parameters
rcu: Provide functions for determining if call_rcu() has been invoked
rcu: Eliminate ->rcu_qs_ctr from the rcu_dynticks structure
rcu: Motivate Tiny RCU forward progress
...