user/sven/linux.git/include/uapi/linux, branch v4.9.15

fs: Better permission checking for submounts

2017-03-15T02:02:44Z

commit 93faccbbfa958a9668d3ab4e30f38dd205cee8d8 upstream. To support unprivileged users mounting filesystems two permission checks have to be performed: a test to see if the user allowed to create a mount in the mount namespace, and a test to see if the user is allowed to access the specified filesystem. The automount case is special in that mounting the original filesystem grants permission to mount the sub-filesystems, to any user who happens to stumble across the their mountpoint and satisfies the ordinary filesystem permission checks. Attempting to handle the automount case by using override_creds almost works. It preserves the idea that permission to mount the original filesystem is permission to mount the sub-filesystem. Unfortunately using override_creds messes up the filesystems ordinary permission checks. Solve this by being explicit that a mount is a submount by introducing vfs_submount, and using it where appropriate. vfs_submount uses a new mount internal mount flags MS_SUBMOUNT, to let sget and friends know that a mount is a submount so they can take appropriate action. sget and sget_userns are modified to not perform any permission checks on submounts. follow_automount is modified to stop using override_creds as that has proven problemantic. do_mount is modified to always remove the new MS_SUBMOUNT flag so that we know userspace will never by able to specify it. autofs4 is modified to stop using current_real_cred that was put in there to handle the previous version of submount permission checking. cifs is modified to pass the mountpoint all of the way down to vfs_submount. debugfs is modified to pass the mountpoint all of the way down to trace_automount by adding a new parameter. To make this change easier a new typedef debugfs_automount_t is introduced to capture the type of the debugfs automount function. Fixes: 069d5ac9ae0d ("autofs: Fix automounts by using current_real_cred()->uid") Fixes: aeaa4a79ff6a ("fs: Call d_automount with the filesystems creds") Reviewed-by: Trond Myklebust Reviewed-by: Seth Forshee Signed-off-by: "Eric W. Biederman" Signed-off-by: Greg Kroah-Hartman

videodev2.h: go back to limited range Y'CbCr for SRGB and, ADOBERGB

2017-02-23T16:44:37Z

commit 35879ee4769099905fa3bda0b21e73d434e2df6a upstream. This reverts 'commit 7e0739cd9c40 ("[media] videodev2.h: fix sYCC/AdobeYCC default quantization range"). The problem is that many drivers can convert R'G'B' content (often from sensors) to Y'CbCr, but they all produce limited range Y'CbCr. To stay backwards compatible the default quantization range for sRGB and AdobeRGB Y'CbCr encoding should be limited range, not full range, even though the corresponding standards specify full range. Update the V4L2_MAP_QUANTIZATION_DEFAULT define accordingly and also update the documentation. Fixes: 7e0739cd9c40 ("[media] videodev2.h: fix sYCC/AdobeYCC default quantization range") Signed-off-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab Signed-off-by: Greg Kroah-Hartman

nl80211: Use different attrs for BSSID and random MAC addr in scan req

2017-01-12T10:39:23Z

commit 2fa436b3a2a7009c11a3bc03fe0ff4c26e80fd87 upstream. NL80211_ATTR_MAC was used to set both the specific BSSID to be scanned and the random MAC address to be used when privacy is enabled. When both the features are enabled, both the BSSID and the local MAC address were getting same value causing Probe Request frames to go with unintended DA. Hence, this has been fixed by using a different NL80211_ATTR_BSSID attribute to set the specific BSSID (which was the more recent addition in cfg80211) for a scan. Backwards compatibility with old userspace software is maintained to some extent by allowing NL80211_ATTR_MAC to be used to set the specific BSSID when scanning without enabling random MAC address use. Scanning with random source MAC address was introduced by commit ad2b26abc157 ("cfg80211: allow drivers to support random MAC addresses for scan") and the issue was introduced with the addition of the second user for the same attribute in commit 818965d39177 ("cfg80211: Allow a scan request for a specific BSSID"). Fixes: 818965d39177 ("cfg80211: Allow a scan request for a specific BSSID") Signed-off-by: Vamsi Krishna Signed-off-by: Jouni Malinen Signed-off-by: Johannes Berg Signed-off-by: Greg Kroah-Hartman

can: raw: raw_setsockopt: limit number of can_filter that can be set

2016-12-07T09:45:57Z

This patch adds a check to limit the number of can_filters that can be set via setsockopt on CAN_RAW sockets. Otherwise allocations > MAX_ORDER are not prevented resulting in a warning. Reference: https://lkml.org/lkml/2016/12/2/230 Reported-by: Andrey Konovalov Tested-by: Andrey Konovalov Cc: linux-stable Signed-off-by: Marc Kleine-Budde

uapi glibc compat: fix outer guard of net device flags enum

2016-12-06T15:43:32Z

Fix a wrong condition preventing the higher net device flags IFF_LOWER_UP etc to be defined if net/if.h is included before linux/if.h. The comment makes it clear the intention was to allow partial definition with either parts. This fixes compilation of userspace programs trying to use IFF_LOWER_UP, IFF_DORMANT or IFF_ECHO. Fixes: 4a91cb61bb99 ("uapi glibc compat: fix compile errors when glibc net/if.h included before linux/if.h") Signed-off-by: Jonas Gorski Reviewed-by: Mikko Rapeli Signed-off-by: David S. Miller

uapi: export nf_log.h

2016-12-06T00:43:02Z

File is in uapi directory but not being copied on make install_headers Fixes commit 4ec9c8fbbc22 ("netfilter: nft_log: complete NFTA_LOG_FLAGS attr support"). Signed-off-by: Stephen Hemminger Signed-off-by: David S. Miller

uapi: export tc_skbmod.h

2016-12-06T00:43:02Z

Fixes commit 735cffe5d800 ("net_sched: Introduce skbmod action") Not used by iproute2 but maybe in future. Signed-off-by: Stephen Hemminger Signed-off-by: David S. Miller

Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net

2016-12-02T19:45:27Z

Pull networking fixes from David Miller: 1) Lots more phydev and probe error path leaks in various drivers by Johan Hovold. 2) Fix race in packet_set_ring(), from Philip Pettersson. 3) Use after free in dccp_invalid_packet(), from Eric Dumazet. 4) Signnedness overflow in SO_{SND,RCV}BUFFORCE, also from Eric Dumazet. 5) When tunneling between ipv4 and ipv6 we can be left with the wrong skb->protocol value as we enter the IPSEC engine and this causes all kinds of problems. Set it before the output path does any dst_output() calls, from Eli Cooper. 6) bcmgenet uses wrong device struct pointer in DMA API calls, fix from Florian Fainelli. 7) Various netfilter nat bug fixes from FLorian Westphal. 8) Fix memory leak in ipvlan_link_new(), from Gao Feng. 9) Locking fixes, particularly wrt. socket lookups, in l2tp from Guillaume Nault. 10) Avoid invoking rhash teardowns in atomic context by moving netlink cb->done() dump completion from a worker thread. Fix from Herbert Xu. 11) Buffer refcount problems in tun and macvtap on errors, from Jason Wang. 12) We don't set Kconfig symbol DEFAULT_TCP_CONG properly when the user selects BBR. Fix from Julian Wollrath. 13) Fix deadlock in transmit path on altera TSE driver, from Lino Sanfilippo. 14) Fix unbalanced reference counting in dsa_switch_tree, from Nikita Yushchenko. 15) tc_tunnel_key needs to be properly exported to userspace via uapi, fix from Roi Dayan. 16) rds_tcp_init_net() doesn't unregister notifier in error path, fix from Sowmini Varadhan. 17) Stale packet header pointer access after pskb_expand_head() in genenve driver, fix from Sabrina Dubroca. * git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (103 commits) net: avoid signed overflows for SO_{SND|RCV}BUFFORCE geneve: avoid use-after-free of skb->data tipc: check minimum bearer MTU net: renesas: ravb: unintialized return value sh_eth: remove unchecked interrupts for RZ/A1 net: bcmgenet: Utilize correct struct device for all DMA operations NET: usb: qmi_wwan: add support for Telit LE922A PID 0x1040 cdc_ether: Fix handling connection notification ip6_offload: check segs for NULL in ipv6_gso_segment. RDS: TCP: unregister_netdevice_notifier() in error path of rds_tcp_init_net Revert: "ip6_tunnel: Update skb->protocol to ETH_P_IPV6 in ip6_tnl_xmit()" ipv6: Set skb->protocol properly for local output ipv4: Set skb->protocol properly for local output packet: fix race condition in packet_set_ring net: ethernet: altera: TSE: do not use tx queue lock in tx completion handler net: ethernet: altera: TSE: Remove unneeded dma sync for tx buffers net: ethernet: stmmac: fix of-node and fixed-link-phydev leaks net: ethernet: stmmac: platform: fix outdated function header net: ethernet: stmmac: dwmac-meson8b: fix probe error path net: ethernet: stmmac: dwmac-generic: fix probe error path ...

Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input

2016-12-01T18:29:41Z

Pull input fixes from Dmitry Torokhov: "We are disabling automatic probing of BYD touchpads as it results in too many false positives, and the hardware is not terribly popular and having the protocol support does not result in significantly improved user experience. We also change keycode for KEY_DATA to avoid clashing with KEY_FASTREVERSE. Luckily this newish code is used by CEC framework that is still in staging, so it is extremely unlikely that someone has already started using this keycode" * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input: Input: change KEY_DATA from 0x275 to 0x277 Input: psmouse - disable automatic probing of BYD touchpads

Input: change KEY_DATA from 0x275 to 0x277

2016-11-30T16:59:26Z

0x275 is used by KEY_FASTREVERSE. Fixes: 488326947cd1 ("Input: add HDMI CEC specific keycodes") Signed-off-by: Ping Cheng Acked-by: Hans Verkuil Cc: stable@vger.kernel.org Signed-off-by: Dmitry Torokhov