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2021-02-06entry: Use different define for selector variable in SUDGabriel Krisman Bertazi
Michael Kerrisk suggested that, from an API perspective, it is a bad idea to share the PR_SYS_DISPATCH_ defines between the prctl operation and the selector variable. Therefore, define two new constants to be used by SUD's selector variable and update the corresponding documentation and test cases. While this changes the API syscall user dispatch has never been part of a Linux release, it will show up for the first time in 5.11. Suggested-by: Michael Kerrisk (man-pages) <mtk.manpages@gmail.com> Signed-off-by: Gabriel Krisman Bertazi <krisman@collabora.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Link: https://lore.kernel.org/r/20210205184321.2062251-1-krisman@collabora.com
2021-02-06entry: Ensure trap after single-step on system call returnGabriel Krisman Bertazi
Commit 299155244770 ("entry: Drop usage of TIF flags in the generic syscall code") introduced a bug on architectures using the generic syscall entry code, in which processes stopped by PTRACE_SYSCALL do not trap on syscall return after receiving a TIF_SINGLESTEP. The reason is that the meaning of TIF_SINGLESTEP flag is overloaded to cause the trap after a system call is executed, but since the above commit, the syscall call handler only checks for the SYSCALL_WORK flags on the exit work. Split the meaning of TIF_SINGLESTEP such that it only means single-step mode, and create a new type of SYSCALL_WORK to request a trap immediately after a syscall in single-step mode. In the current implementation, the SYSCALL_WORK flag shadows the TIF_SINGLESTEP flag for simplicity. Update x86 to flip this bit when a tracer enables single stepping. Fixes: 299155244770 ("entry: Drop usage of TIF flags in the generic syscall code") Suggested-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Gabriel Krisman Bertazi <krisman@collabora.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Tested-by: Kyle Huey <me@kylehuey.com> Link: https://lore.kernel.org/r/87h7mtc9pr.fsf_-_@collabora.com
2021-01-31Merge tag 'x86_entry_for_v5.11_rc6' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull x86 fix from Borislav Petkov: "A single fix for objtool to generate proper unwind info for newer toolchains which do not generate section symbols anymore. And a cleanup ontop. This was originally going to go during the next merge window but people can already trigger a build error with binutils-2.36 which doesn't emit section symbols - something which objtool relies on - so let's expedite it" * tag 'x86_entry_for_v5.11_rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/entry: Remove put_ret_addr_in_rdi THUNK macro argument x86/entry: Emit a symbol for register restoring thunk
2021-01-31Merge tag 'nfs-for-5.11-3' of git://git.linux-nfs.org/projects/trondmy/linux-nfsLinus Torvalds
Pull NFS client fixes from Trond Myklebust: - SUNRPC: Handle 0 length opaque XDR object data properly - Fix a layout segment leak in pnfs_layout_process() - pNFS/NFSv4: Update the layout barrier when we schedule a layoutreturn - pNFS/NFSv4: Improve rejection of out-of-order layouts - pNFS/NFSv4: Try to return invalid layout in pnfs_layout_process() * tag 'nfs-for-5.11-3' of git://git.linux-nfs.org/projects/trondmy/linux-nfs: SUNRPC: Handle 0 length opaque XDR object data properly SUNRPC: Move simple_get_bytes and simple_get_netobj into private header pNFS/NFSv4: Improve rejection of out-of-order layouts pNFS/NFSv4: Update the layout barrier when we schedule a layoutreturn pNFS/NFSv4: Try to return invalid layout in pnfs_layout_process() pNFS/NFSv4: Fix a layout segment leak in pnfs_layout_process()
2021-01-28Merge tag 'net-5.11-rc6' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net Pull networking fixes from Jakub Kicinski: "Networking fixes including fixes from can, xfrm, wireless, wireless-drivers and netfilter trees. Nothing scary, Intel WiFi-related fixes seemed most notable to the users. Current release - regressions: - dsa: microchip: ksz8795: fix KSZ8794 port map again to program the CPU port correctly Current release - new code bugs: - iwlwifi: pcie: reschedule in long-running memory reads Previous releases - regressions: - iwlwifi: dbg: don't try to overwrite read-only FW data - iwlwifi: provide gso_type to GSO packets - octeontx2: make sure the buffer is 128 byte aligned - tcp: make TCP_USER_TIMEOUT accurate for zero window probes - xfrm: fix wraparound in xfrm_policy_addr_delta() - xfrm: fix oops in xfrm_replay_advance_bmp due to a race between CPUs in presence of packet reorder - tcp: fix TLP timer not set when CA_STATE changes from DISORDER to OPEN - wext: fix NULL-ptr-dereference with cfg80211's lack of commit() Previous releases - always broken: - igc: fix link speed advertising - stmmac: configure EHL PSE0 GbE and PSE1 GbE to 32 bits DMA addressing - team: protect features update by RCU to avoid deadlock - xfrm: fix disable_xfrm sysctl when used on xfrm interfaces themselves - fec: fix temporary RMII clock reset on link up - can: dev: prevent potential information leak in can_fill_info() Misc: - mrp: fix bad packing of MRP test packet structures - uapi: fix big endian definition of ipv6_rpl_sr_hdr - add David Ahern to IPv4/IPv6 maintainers" * tag 'net-5.11-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (86 commits) rxrpc: Fix memory leak in rxrpc_lookup_local mlxsw: spectrum_span: Do not overwrite policer configuration selftests: forwarding: Specify interface when invoking mausezahn stmmac: intel: Configure EHL PSE0 GbE and PSE1 GbE to 32 bits DMA addressing net: usb: cdc_ether: added support for Thales Cinterion PLSx3 modem family. ibmvnic: Ensure that CRQ entry read are correctly ordered MAINTAINERS: add missing header for bonding net: decnet: fix netdev refcount leaking on error path net: switchdev: don't set port_obj_info->handled true when -EOPNOTSUPP can: dev: prevent potential information leak in can_fill_info() net: fec: Fix temporary RMII clock reset on link up net: lapb: Add locking to the lapb module team: protect features update by RCU to avoid deadlock MAINTAINERS: add David Ahern to IPv4/IPv6 maintainers net/mlx5: CT: Fix incorrect removal of tuple_nat_node from nat rhashtable net/mlx5e: Revert parameters on errors when changing MTU and LRO state without reset net/mlx5e: Revert parameters on errors when changing trust state without reset net/mlx5e: Correctly handle changing the number of queues when the interface is down net/mlx5e: Fix CT rule + encap slow path offload and deletion net/mlx5e: Disable hw-tc-offload when MLX5_CLS_ACT config is disabled ...
2021-01-28Merge tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdmaLinus Torvalds
Pull rdma fixes from Jason Gunthorpe: "Several recent regressions and some bug fixes: - Typo corrupting the max_recv_sge for cxgb4 - Regression from re-using kernel enums as a HW AbI in vmw_pvrdma - Sleeping inside a spinlock in hns - Revert the attempt to fix devlink deadlocks as the fix is more buggy - Typo in sysfs_emit_at conversions - Revert the removal of VLAN support in rxe" * tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma: Revert "RDMA/rxe: Remove VLAN code leftovers from RXE" RDMA/usnic: Fix misuse of sysfs_emit_at Revert "RDMA/mlx5: Fix devlink deadlock on net namespace deletion" RDMA/hns: Use mutex instead of spinlock for ida allocation RDMA/vmw_pvrdma: Fix network_hdr_type reported in WC RDMA/cxgb4: Fix the reported max_recv_sge value
2021-01-28Merge tag 'media/v5.11-2' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media Pull media fixes from Mauro Carvalho Chehab: - a V4L2 core regression at videobuf2 when checking for single-plane dmabuf - a change at uAPI header v4l2-subdev.h, fixing a breakage as BIT() macro is not available in userspace - fix some regressions at RC core due to the usage of microseconds everywhere on it - a fix for a race condition at RC core - a rename on a newly-introduced kAPI symbol (v4l2_get_link_rate), currently used only by a single driver - Regression fixes for rcar-vin, cedrus, ite-cir, hantro, css, venus, and cec drivers. * tag 'media/v5.11-2' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media: media: hantro: Fix reset_raw_fmt initialization media: cec: add stm32 driver media: cedrus: Fix H264 decoding media: v4l2-subdev.h: BIT() is not available in userspace media: Revert "media: videobuf2: Fix length check for single plane dmabuf queueing" media: rc: ite-cir: fix min_timeout calculation media: venus: core: Fix platform driver shutdown media: rc: fix timeout handling after switch to microsecond durations media: v4l: common: Fix naming of v4l2_get_link_rate media: rcar-vin: fix return, use ret instead of zero media: ccs: Get static data version minor correctly media: ccs-pll: Fix link frequency for C-PHY media: rc: ensure that uevent can be read directly after rc device register
2021-01-28Merge tag 'sound-5.11-rc6' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound Pull sound fixes from Takashi Iwai: "Although the incoming fixes haven't settled down yet, all changes here are small and mostly device-specific fixes, so nothing look worrisome. - Yet another USB-audio regression fixes - HD-audio ID fix and device-specific quirks - SOF Intel / SoundWire fixes including topology - ASoC Qualcomm and Mediatek fixes" * tag 'sound-5.11-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound: (24 commits) ALSA: hda/via: Apply the workaround generically for Clevo machines ASoC: Intel: sof_sdw: set proper flags for Dell TGL-H SKU 0A5E ASoC: qcom: lpass: Fix out-of-bounds DAI ID lookup ASoC: mediatek: mt8192-mt6359: add format constraints for RT5682 ASoC: ak4458: correct reset polarity ASoC: SOF: SND_INTEL_DSP_CONFIG dependency ASoC: SOF: Intel: soundwire: fix select/depend unmet dependencies ALSA: hda: intel-dsp-config: add PCI id for TGL-H ALSA: usb-audio: workaround for iface reset issue ALSA: pcm: One more dependency for hw constraints ALSA: hda/realtek: Enable headset of ASUS B1400CEPE with ALC256 ASoC: Intel: Skylake: Zero snd_ctl_elem_value ASoC: Intel: Skylake: skl-topology: Fix OOPs ib skl_tplg_complete ASoC: qcom: Fix number of HDMI RDMA channels on sc7180 ASoC: mediatek: mt8183-da7219: ignore TDM DAI link by default ASoC: mediatek: mt8183-mt6358: ignore TDM DAI link by default ASoC: topology: Properly unregister DAI on removal ASoC: topology: Fix memory corruption in soc_tplg_denum_create_values() ASoC: qcom: lpass-ipq806x: fix bitwidth regmap field ASoC: AMD Renoir - refine DMI entries for some Lenovo products ...
2021-01-27Merge git://git.kernel.org/pub/scm/linux/kernel/git/pablo/nfJakub Kicinski
Pablo Neira Ayuso says: ==================== Netfilter fixes for net 1) Honor stateful expressions defined in the set from the dynset extension. The set definition provides a stateful expression that must be used by the dynset expression in case it is specified. 2) Missing timeout extension in the set element in the dynset extension leads to inconsistent ruleset listing, not allowing the user to restore timeout and expiration on ruleset reload. 3) Do not dump the stateful expression from the dynset extension if it coming from the set definition. * git://git.kernel.org/pub/scm/linux/kernel/git/pablo/nf: netfilter: nft_dynset: dump expressions when set definition contains no expressions netfilter: nft_dynset: add timeout extension to template netfilter: nft_dynset: honor stateful expressions in set definition ==================== Link: https://lore.kernel.org/r/20210127132512.5472-1-pablo@netfilter.org Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2021-01-26net: lapb: Add locking to the lapb moduleXie He
In the lapb module, the timers may run concurrently with other code in this module, and there is currently no locking to prevent the code from racing on "struct lapb_cb". This patch adds locking to prevent racing. 1. Add "spinlock_t lock" to "struct lapb_cb"; Add "spin_lock_bh" and "spin_unlock_bh" to APIs, timer functions and notifier functions. 2. Add "bool t1timer_stop, t2timer_stop" to "struct lapb_cb" to make us able to ask running timers to abort; Modify "lapb_stop_t1timer" and "lapb_stop_t2timer" to make them able to abort running timers; Modify "lapb_t2timer_expiry" and "lapb_t1timer_expiry" to make them abort after they are stopped by "lapb_stop_t1timer", "lapb_stop_t2timer", and "lapb_start_t1timer", "lapb_start_t2timer". 3. Let lapb_unregister wait for other API functions and running timers to stop. 4. The lapb_device_event function calls lapb_disconnect_request. In order to avoid trying to hold the lock twice, add a new function named "__lapb_disconnect_request" which assumes the lock is held, and make it called by lapb_disconnect_request and lapb_device_event. Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2") Cc: Martin Schiller <ms@dev.tdt.de> Signed-off-by: Xie He <xie.he.0141@gmail.com> Link: https://lore.kernel.org/r/20210126040939.69995-1-xie.he.0141@gmail.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2021-01-26Merge tag 'regulator-fix-v5.11-rc5' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator Pull regulator fixes from Mark Brown: "The main thing here is a change to make sure that we don't try to double resolve the supply of a regulator if we have two probes going on simultaneously, plus an incremental fix on top of that to resolve a lockdep issue it introduced. There's also a patch from Dmitry Osipenko adding stubs for some functions to avoid build issues in consumers in some configurations" * tag 'regulator-fix-v5.11-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator: regulator: Fix lockdep warning resolving supplies regulator: consumer: Add missing stubs to regulator/consumer.h regulator: core: avoid regulator_resolve_supply() race condition
2021-01-26media: v4l2-subdev.h: BIT() is not available in userspaceHans Verkuil
The BIT macro is not available in userspace, so replace BIT(0) by 0x00000001. Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> Fixes: 6446ec6cbf46 ("media: v4l2-subdev: add VIDIOC_SUBDEV_QUERYCAP ioctl") Cc: <stable@vger.kernel.org> Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
2021-01-26Merge tag 'asoc-fix-v5.11-rc5' of ↵Takashi Iwai
https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into for-linus ASoC: Fixes for v5.11 More fixes for v5.11, almost all driver specific issues including new device IDs - there's one error handling fix for the topology stuff too.
2021-01-25uapi: fix big endian definition of ipv6_rpl_sr_hdrJustin Iurman
Following RFC 6554 [1], the current order of fields is wrong for big endian definition. Indeed, here is how the header looks like: +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | Next Header | Hdr Ext Len | Routing Type | Segments Left | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | CmprI | CmprE | Pad | Reserved | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ This patch reorders fields so that big endian definition is now correct. [1] https://tools.ietf.org/html/rfc6554#section-3 Fixes: cfa933d938d8 ("include: uapi: linux: add rpl sr header definition") Signed-off-by: Justin Iurman <justin.iurman@uliege.be> Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2021-01-25SUNRPC: Move simple_get_bytes and simple_get_netobj into private headerDave Wysochanski
Remove duplicated helper functions to parse opaque XDR objects and place inside new file net/sunrpc/auth_gss/auth_gss_internal.h. In the new file carry the license and copyright from the source file net/sunrpc/auth_gss/auth_gss.c. Finally, update the comment inside include/linux/sunrpc/xdr.h since lockd is not the only user of struct xdr_netobj. Signed-off-by: Dave Wysochanski <dwysocha@redhat.com> Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
2021-01-25Commit 9bb48c82aced ("tty: implement write_iter") converted the ttySami Tolvanen
layer to use write_iter. Fix the redirected_tty_write declaration also in n_tty and change the comparisons to use write_iter instead of write. [ Also moved the declaration of redirected_tty_write() to the proper location in a header file. The reason for the bug was the bogus extern declaration in n_tty.c silently not matching the changed definition in tty_io.c, and because it wasn't in a shared header file, there was no cross-checking of the declaration. Sami noticed because Clang's Control Flow Integrity checking ended up incidentally noticing the inconsistent declaration. - Linus ] Fixes: 9bb48c82aced ("tty: implement write_iter") Signed-off-by: Sami Tolvanen <samitolvanen@google.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2021-01-24Merge tag 'block-5.11-2021-01-24' of git://git.kernel.dk/linux-blockLinus Torvalds
Pull block fixes from Jens Axboe: - NVMe pull request from Christoph: - fix a status code in nvmet (Chaitanya Kulkarni) - avoid double completions in nvme-rdma/nvme-tcp (Chao Leng) - fix the CMB support to cope with NVMe 1.4 controllers (Klaus Jensen) - fix PRINFO handling in the passthrough ioctl (Revanth Rajashekar) - fix a double DMA unmap in nvme-pci - lightnvm error path leak fix (Pan) - MD pull request from Song: - Flush request fix (Xiao) * tag 'block-5.11-2021-01-24' of git://git.kernel.dk/linux-block: lightnvm: fix memory leak when submit fails nvme-pci: fix error unwind in nvme_map_data nvme-pci: refactor nvme_unmap_data md: Set prev_flush_start and flush_bio in an atomic way nvmet: set right status on error in id-ns handler nvme-pci: allow use of cmb on v1.4 controllers nvme-tcp: avoid request double completion for concurrent nvme_tcp_timeout nvme-rdma: avoid request double completion for concurrent nvme_rdma_timeout nvme: check the PRINFO bit before deciding the host buffer length
2021-01-24Merge tag 'driver-core-5.11-rc5' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core Pull driver core fixes from Greg KH: "Here are some small driver core fixes for 5.11-rc5 that resolve some reported problems: - revert of a -rc1 patch that was causing problems with some machines - device link device name collision problem fix (busses only have to name devices unique to their bus, not unique to all busses) - kernfs splice bugfixes to resolve firmware loading problems for Qualcomm systems. - other tiny driver core fixes for minor issues reported. All of these have been in linux-next with no reported problems" * tag 'driver-core-5.11-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: driver core: Fix device link device name collision driver core: Extend device_is_dependent() kernfs: wire up ->splice_read and ->splice_write kernfs: implement ->write_iter kernfs: implement ->read_iter Revert "driver core: Reorder devices on successful probe" Driver core: platform: Add extra error check in devm_platform_get_irqs_affinity() drivers core: Free dma_range_map when driver probe failed
2021-01-24Merge tag 'sched_urgent_for_v5.11_rc5' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull scheduler fixes from Borislav Petkov: - Correct the marking of kthreads which are supposed to run on a specific, single CPU vs such which are affine to only one CPU, mark per-cpu workqueue threads as such and make sure that marking "survives" CPU hotplug. Fix CPU hotplug issues with such kthreads. - A fix to not push away tasks on CPUs coming online. - Have workqueue CPU hotplug code use cpu_possible_mask when breaking affinity on CPU offlining so that pending workers can finish on newly arrived onlined CPUs too. - Dump tasks which haven't vacated a CPU which is currently being unplugged. - Register a special scale invariance callback which gets called on resume from RAM to read out APERF/MPERF after resume and thus make the schedutil scaling governor more precise. * tag 'sched_urgent_for_v5.11_rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: sched: Relax the set_cpus_allowed_ptr() semantics sched: Fix CPU hotplug / tighten is_per_cpu_kthread() sched: Prepare to use balance_push in ttwu() workqueue: Restrict affinity change to rescuer workqueue: Tag bound workers with KTHREAD_IS_PER_CPU kthread: Extract KTHREAD_IS_PER_CPU sched: Don't run cpu-online with balance_push() enabled workqueue: Use cpu_possible_mask instead of cpu_active_mask to break affinity sched/core: Print out straggler tasks in sched_cpu_dying() x86: PM: Register syscore_ops for scale invariance
2021-01-24Merge tag 'timers_urgent_for_v5.11_rc5' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull timer fixes from Borislav Petkov: - Fix an integer overflow in the NTP RTC synchronization which led to the latter happening every 2 seconds instead of the intended every 11 minutes. - Get rid of now unused get_seconds(). * tag 'timers_urgent_for_v5.11_rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: ntp: Fix RTC synchronization on 32-bit platforms timekeeping: Remove unused get_seconds()
2021-01-24Merge tag 'for-linus-2021-01-24' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/brauner/linux Pull misc fixes from Christian Brauner: - Jann reported sparse complaints because of a missing __user annotation in a helper we added way back when we added pidfd_send_signal() to avoid compat syscall handling. Fix it. - Yanfei replaces a reference in a comment to the _do_fork() helper I removed a while ago with a reference to the new kernel_clone() replacement - Alexander Guril added a simple coding style fix * tag 'for-linus-2021-01-24' of git://git.kernel.org/pub/scm/linux/kernel/git/brauner/linux: kthread: remove comments about old _do_fork() helper Kernel: fork.c: Fix coding style: Do not use {} around single-line statements signal: Add missing __user annotation to copy_siginfo_from_user_any
2021-01-23tcp: fix TLP timer not set when CA_STATE changes from DISORDER to OPENPengcheng Yang
Upon receiving a cumulative ACK that changes the congestion state from Disorder to Open, the TLP timer is not set. If the sender is app-limited, it can only wait for the RTO timer to expire and retransmit. The reason for this is that the TLP timer is set before the congestion state changes in tcp_ack(), so we delay the time point of calling tcp_set_xmit_timer() until after tcp_fastretrans_alert() returns and remove the FLAG_SET_XMIT_TIMER from ack_flag when the RACK reorder timer is set. This commit has two additional benefits: 1) Make sure to reset RTO according to RFC6298 when receiving ACK, to avoid spurious RTO caused by RTO timer early expires. 2) Reduce the xmit timer reschedule once per ACK when the RACK reorder timer is set. Fixes: df92c8394e6e ("tcp: fix xmit timer to only be reset if data ACKed/SACKed") Link: https://lore.kernel.org/netdev/1611311242-6675-1-git-send-email-yangpc@wangsu.com Signed-off-by: Pengcheng Yang <yangpc@wangsu.com> Acked-by: Neal Cardwell <ncardwell@google.com> Acked-by: Yuchung Cheng <ycheng@google.com> Cc: Eric Dumazet <edumazet@google.com> Link: https://lore.kernel.org/r/1611464834-23030-1-git-send-email-yangpc@wangsu.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2021-01-23tcp: make TCP_USER_TIMEOUT accurate for zero window probesEnke Chen
The TCP_USER_TIMEOUT is checked by the 0-window probe timer. As the timer has backoff with a max interval of about two minutes, the actual timeout for TCP_USER_TIMEOUT can be off by up to two minutes. In this patch the TCP_USER_TIMEOUT is made more accurate by taking it into account when computing the timer value for the 0-window probes. This patch is similar to and builds on top of the one that made TCP_USER_TIMEOUT accurate for RTOs in commit b701a99e431d ("tcp: Add tcp_clamp_rto_to_user_timeout() helper to improve accuracy"). Fixes: 9721e709fa68 ("tcp: simplify window probe aborting on USER_TIMEOUT") Signed-off-by: Enke Chen <enchen@paloaltonetworks.com> Reviewed-by: Neal Cardwell <ncardwell@google.com> Signed-off-by: Eric Dumazet <edumazet@google.com> Link: https://lore.kernel.org/r/20210122191306.GA99540@localhost.localdomain Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2021-01-23net: mrp: move struct definitions out of uapiRasmus Villemoes
None of these are actually used in the kernel/userspace interface - there's a userspace component of implementing MRP, and userspace will need to construct certain frames to put on the wire, but there's no reason the kernel should provide the relevant definitions in a UAPI header. In fact, some of those definitions were broken until previous commit, so only keep the few that are actually referenced in the kernel code, and move them to the br_private_mrp.h header. Signed-off-by: Rasmus Villemoes <rasmus.villemoes@prevas.dk> Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2021-01-23net: mrp: fix definitions of MRP test packetsRasmus Villemoes
Wireshark says that the MRP test packets cannot be decoded - and the reason for that is that there's a two-byte hole filled with garbage between the "transitions" and "timestamp" members. So Wireshark decodes the two garbage bytes and the top two bytes of the timestamp written by the kernel as the timestamp value (which thus fluctuates wildly), and interprets the lower two bytes of the timestamp as a new (type, length) pair, which is of course broken. Even though this makes the timestamp field in the struct unaligned, it actually makes it end up on a 32 bit boundary in the frame as mandated by the standard, since it is preceded by a two byte TLV header. The struct definitions live under include/uapi/, but they are not really part of any kernel<->userspace API/ABI, so fixing the definitions by adding the packed attribute should not cause any compatibility issues. Signed-off-by: Rasmus Villemoes <rasmus.villemoes@prevas.dk> Reviewed-by: Horatiu Vultur <horatiu.vultur@microchip.com> Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2021-01-23ALSA: pcm: One more dependency for hw constraintsTakashi Iwai
The fix for a long-standing USB-audio bug required one more dependency variable to be added to the hw constraints. Unfortunately I didn't realize at debugging that the new addition may result in the overflow of the dependency array of each snd_pcm_hw_rule (up to three plus a sentinel), because USB-audio driver adds one more dependency only for a certain device and bus, hence it works as is for many devices. But in a bad case, a simple open always results in -EINVAL (with kernel WARNING if CONFIG_SND_DEBUG is set) no matter what is passed. Since the dependencies are real and unavoidable (USB-audio restricts the hw_params per looping over the format/rate/channels combos), the only good solution seems to raise the bar for one more dependency for snd_pcm_hw_rule -- so does this patch: now the hw constraint dependencies can be up to four. Fixes: 506c203cc3de ("ALSA: usb-audio: Fix hw constraints dependencies") Reported-by: Jamie Heilman <jamie@audible.transient.net> Link: https://lore.kernel.org/r/20210123155730.22576-1-tiwai@suse.de Signed-off-by: Takashi Iwai <tiwai@suse.de>
2021-01-22kthread: Extract KTHREAD_IS_PER_CPUPeter Zijlstra
There is a need to distinguish geniune per-cpu kthreads from kthreads that happen to have a single CPU affinity. Geniune per-cpu kthreads are kthreads that are CPU affine for correctness, these will obviously have PF_KTHREAD set, but must also have PF_NO_SETAFFINITY set, lest userspace modify their affinity and ruins things. However, these two things are not sufficient, PF_NO_SETAFFINITY is also set on other tasks that have their affinities controlled through other means, like for instance workqueues. Therefore another bit is needed; it turns out kthread_create_per_cpu() already has such a bit: KTHREAD_IS_PER_CPU, which is used to make kthread_park()/kthread_unpark() work correctly. Expose this flag and remove the implicit setting of it from kthread_create_on_cpu(); the io_uring usage of it seems dubious at best. Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Reviewed-by: Valentin Schneider <valentin.schneider@arm.com> Tested-by: Valentin Schneider <valentin.schneider@arm.com> Link: https://lkml.kernel.org/r/20210121103506.557620262@infradead.org
2021-01-21driver core: Fix device link device name collisionSaravana Kannan
The device link device's name was of the form: <supplier-dev-name>--<consumer-dev-name> This can cause name collision as reported here [1] as device names are not globally unique. Since device names have to be unique within the bus/class, add the bus/class name as a prefix to the device names used to construct the device link device name. So the devuce link device's name will be of the form: <supplier-bus-name>:<supplier-dev-name>--<consumer-bus-name>:<consumer-dev-name> [1] - https://lore.kernel.org/lkml/20201229033440.32142-1-michael@walle.cc/ Fixes: 287905e68dd2 ("driver core: Expose device link details in sysfs") Cc: stable@vger.kernel.org Reported-by: Michael Walle <michael@walle.cc> Tested-by: Michael Walle <michael@walle.cc> Signed-off-by: Saravana Kannan <saravanak@google.com> Link: https://lore.kernel.org/r/20210110175408.1465657-1-saravanak@google.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-01-21regulator: consumer: Add missing stubs to regulator/consumer.hDmitry Osipenko
Add missing stubs to regulator/consumer.h in order to fix COMPILE_TEST of the kernel. In particular this should fix compile-testing of OPP core because of a missing stub for regulator_sync_voltage(). Reported-by: kernel test robot <lkp@intel.com> Signed-off-by: Dmitry Osipenko <digetx@gmail.com> Link: https://lore.kernel.org/r/20210120205844.12658-1-digetx@gmail.com Signed-off-by: Mark Brown <broonie@kernel.org>
2021-01-20Merge tag 'net-5.11-rc5' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net Pull networking fixes from Jakub Kicinski: "Networking fixes for 5.11-rc5, including fixes from bpf, wireless, and can trees. Current release - regressions: - nfc: nci: fix the wrong NCI_CORE_INIT parameters Current release - new code bugs: - bpf: allow empty module BTFs Previous releases - regressions: - bpf: fix signed_{sub,add32}_overflows type handling - tcp: do not mess with cloned skbs in tcp_add_backlog() - bpf: prevent double bpf_prog_put call from bpf_tracing_prog_attach - bpf: don't leak memory in bpf getsockopt when optlen == 0 - tcp: fix potential use-after-free due to double kfree() - mac80211: fix encryption issues with WEP - devlink: use right genl user_ptr when handling port param get/set - ipv6: set multicast flag on the multicast route - tcp: fix TCP_USER_TIMEOUT with zero window Previous releases - always broken: - bpf: local storage helpers should check nullness of owner ptr passed - mac80211: fix incorrect strlen of .write in debugfs - cls_flower: call nla_ok() before nla_next() - skbuff: back tiny skbs with kmalloc() in __netdev_alloc_skb() too" * tag 'net-5.11-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (52 commits) net: systemport: free dev before on error path net: usb: cdc_ncm: don't spew notifications net: mscc: ocelot: Fix multicast to the CPU port tcp: Fix potential use-after-free due to double kfree() bpf: Fix signed_{sub,add32}_overflows type handling can: peak_usb: fix use after free bugs can: vxcan: vxcan_xmit: fix use after free bug can: dev: can_restart: fix use after free bug tcp: fix TCP socket rehash stats mis-accounting net: dsa: b53: fix an off by one in checking "vlan->vid" tcp: do not mess with cloned skbs in tcp_add_backlog() selftests: net: fib_tests: remove duplicate log test net: nfc: nci: fix the wrong NCI_CORE_INIT parameters sh_eth: Fix power down vs. is_opened flag ordering net: Disable NETIF_F_HW_TLS_RX when RXCSUM is disabled netfilter: rpfilter: mask ecn bits before fib lookup udp: mask TOS bits in udp_v4_early_demux() xsk: Clear pool even for inactive queues bpf: Fix helper bpf_map_peek_elem_proto pointing to wrong callback sh_eth: Make PHY access aware of Runtime PM to fix reboot crash ...
2021-01-20net: usb: cdc_ncm: don't spew notificationsGrant Grundler
RTL8156 sends notifications about every 32ms. Only display/log notifications when something changes. This issue has been reported by others: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1832472 https://lkml.org/lkml/2020/8/27/1083 ... [785962.779840] usb 1-1: new high-speed USB device number 5 using xhci_hcd [785962.929944] usb 1-1: New USB device found, idVendor=0bda, idProduct=8156, bcdDevice=30.00 [785962.929949] usb 1-1: New USB device strings: Mfr=1, Product=2, SerialNumber=6 [785962.929952] usb 1-1: Product: USB 10/100/1G/2.5G LAN [785962.929954] usb 1-1: Manufacturer: Realtek [785962.929956] usb 1-1: SerialNumber: 000000001 [785962.991755] usbcore: registered new interface driver cdc_ether [785963.017068] cdc_ncm 1-1:2.0: MAC-Address: 00:24:27:88:08:15 [785963.017072] cdc_ncm 1-1:2.0: setting rx_max = 16384 [785963.017169] cdc_ncm 1-1:2.0: setting tx_max = 16384 [785963.017682] cdc_ncm 1-1:2.0 usb0: register 'cdc_ncm' at usb-0000:00:14.0-1, CDC NCM, 00:24:27:88:08:15 [785963.019211] usbcore: registered new interface driver cdc_ncm [785963.023856] usbcore: registered new interface driver cdc_wdm [785963.025461] usbcore: registered new interface driver cdc_mbim [785963.038824] cdc_ncm 1-1:2.0 enx002427880815: renamed from usb0 [785963.089586] cdc_ncm 1-1:2.0 enx002427880815: network connection: disconnected [785963.121673] cdc_ncm 1-1:2.0 enx002427880815: network connection: disconnected [785963.153682] cdc_ncm 1-1:2.0 enx002427880815: network connection: disconnected ... This is about 2KB per second and will overwrite all contents of a 1MB dmesg buffer in under 10 minutes rendering them useless for debugging many kernel problems. This is also an extra 180 MB/day in /var/logs (or 1GB per week) rendering the majority of those logs useless too. When the link is up (expected state), spew amount is >2x higher: ... [786139.600992] cdc_ncm 2-1:2.0 enx002427880815: network connection: connected [786139.632997] cdc_ncm 2-1:2.0 enx002427880815: 2500 mbit/s downlink 2500 mbit/s uplink [786139.665097] cdc_ncm 2-1:2.0 enx002427880815: network connection: connected [786139.697100] cdc_ncm 2-1:2.0 enx002427880815: 2500 mbit/s downlink 2500 mbit/s uplink [786139.729094] cdc_ncm 2-1:2.0 enx002427880815: network connection: connected [786139.761108] cdc_ncm 2-1:2.0 enx002427880815: 2500 mbit/s downlink 2500 mbit/s uplink ... Chrome OS cannot support RTL8156 until this is fixed. Signed-off-by: Grant Grundler <grundler@chromium.org> Reviewed-by: Hayes Wang <hayeswang@realtek.com> Link: https://lore.kernel.org/r/20210120011208.3768105-1-grundler@chromium.org Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2021-01-20ASoC: dt-bindings: lpass: Fix and common up lpass dai idsSrinivas Kandagatla
Existing header file design of having separate SoC specific header files for the common lpass driver has mutiple issues. This design is prone to break as an when new SoC header is added as the common DAI ids of other SoCs will be overwritten by the new ones. One of them surfaced by recent patch that adds support to sc7180, this one totally broke LPASS drivers on other Qualcomm SoCs. Before this gets worst, fix this by having a common header qcom,lpass.h. This should fix the issue and any new DAI ids should be added to the common header. This will be more sustainable then the existing design! Fixes: 12fbfc4cabec6595 ("ASoC: Add sc7180-lpass binding header hdmi define") Reported-by: Jun Nie <jun.nie@linaro.org> Reported-by: Stephan Gerhold <stephan@gerhold.net> Tested-by: Srinivasa Rao <srivasam@codeaurora.org> Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org> Link: https://lore.kernel.org/r/20210119171527.32145-2-srinivas.kandagatla@linaro.org Signed-off-by: Mark Brown <broonie@kernel.org>
2021-01-19tcp: fix TCP socket rehash stats mis-accountingYuchung Cheng
The previous commit 32efcc06d2a1 ("tcp: export count for rehash attempts") would mis-account rehashing SNMP and socket stats: a. During handshake of an active open, only counts the first SYN timeout b. After handshake of passive and active open, stop updating after (roughly) TCP_RETRIES1 recurring RTOs c. After the socket aborts, over count timeout_rehash by 1 This patch fixes this by checking the rehash result from sk_rethink_txhash. Fixes: 32efcc06d2a1 ("tcp: export count for rehash attempts") Signed-off-by: Yuchung Cheng <ycheng@google.com> Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: Neal Cardwell <ncardwell@google.com> Link: https://lore.kernel.org/r/20210119192619.1848270-1-ycheng@google.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2021-01-19Revert "RDMA/mlx5: Fix devlink deadlock on net namespace deletion"Parav Pandit
This reverts commit fbdd0049d98d44914fc57d4b91f867f4996c787b. Due to commit in fixes tag, netdevice events were received only in one net namespace of mlx5_core_dev. Due to this when netdevice events arrive in net namespace other than net namespace of mlx5_core_dev, they are missed. This results in empty GID table due to RDMA device being detached from its net device. Hence, revert back to receive netdevice events in all net namespaces to restore back RDMA functionality in non init_net net namespace. The deadlock will have to be addressed in another patch. Fixes: fbdd0049d98d ("RDMA/mlx5: Fix devlink deadlock on net namespace deletion") Link: https://lore.kernel.org/r/20210117092633.10690-1-leon@kernel.org Signed-off-by: Parav Pandit <parav@nvidia.com> Signed-off-by: Leon Romanovsky <leonro@nvidia.com> Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
2021-01-19RDMA/vmw_pvrdma: Fix network_hdr_type reported in WCBryan Tan
The PVRDMA device HW interface defines network_hdr_type according to an old definition of the internal kernel rdma_network_type enum that has since changed, resulting in the wrong rdma_network_type being reported. Fix this by explicitly defining the enum used by the PVRDMA device and adding a function to convert the pvrdma_network_type to rdma_network_type enum. Cc: stable@vger.kernel.org # 5.10+ Fixes: 1c15b4f2a42f ("RDMA/core: Modify enum ib_gid_type and enum rdma_network_type") Link: https://lore.kernel.org/r/1611026189-17943-1-git-send-email-bryantan@vmware.com Reviewed-by: Adit Ranadive <aditr@vmware.com> Signed-off-by: Bryan Tan <bryantan@vmware.com> Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
2021-01-19Merge tag 'nfsd-5.11-2' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/cel/linux Pull nfsd fixes from Chuck Lever: - Avoid exposing parent of root directory in NFSv3 READDIRPLUS results - Fix a tracepoint change that went in the initial 5.11 merge * tag 'nfsd-5.11-2' of git://git.kernel.org/pub/scm/linux/kernel/git/cel/linux: SUNRPC: Move the svc_xdr_recvfrom tracepoint again nfsd4: readdirplus shouldn't return parent of export
2021-01-19mdio-bitbang: Export mdiobb_{read,write}()Geert Uytterhoeven
Export mdiobb_read() and mdiobb_write(), so Ethernet controller drivers can call them from their MDIO read/write wrappers. Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Tested-by: Wolfram Sang <wsa+renesas@sang-engineering.com> Reviewed-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2021-01-18tcp: fix TCP_USER_TIMEOUT with zero windowEnke Chen
The TCP session does not terminate with TCP_USER_TIMEOUT when data remain untransmitted due to zero window. The number of unanswered zero-window probes (tcp_probes_out) is reset to zero with incoming acks irrespective of the window size, as described in tcp_probe_timer(): RFC 1122 4.2.2.17 requires the sender to stay open indefinitely as long as the receiver continues to respond probes. We support this by default and reset icsk_probes_out with incoming ACKs. This counter, however, is the wrong one to be used in calculating the duration that the window remains closed and data remain untransmitted. Thanks to Jonathan Maxwell <jmaxwell37@gmail.com> for diagnosing the actual issue. In this patch a new timestamp is introduced for the socket in order to track the elapsed time for the zero-window probes that have not been answered with any non-zero window ack. Fixes: 9721e709fa68 ("tcp: simplify window probe aborting on USER_TIMEOUT") Reported-by: William McCall <william.mccall@gmail.com> Co-developed-by: Neal Cardwell <ncardwell@google.com> Signed-off-by: Neal Cardwell <ncardwell@google.com> Signed-off-by: Enke Chen <enchen@paloaltonetworks.com> Reviewed-by: Yuchung Cheng <ycheng@google.com> Reviewed-by: Eric Dumazet <edumazet@google.com> Link: https://lore.kernel.org/r/20210115223058.GA39267@localhost.localdomain Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2021-01-18Merge tag 'mac80211-for-net-2021-01-18.2' of ↵Jakub Kicinski
git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211 Johannes Berg says: ==================== Various fixes: * kernel-doc parsing fixes * incorrect debugfs string checks * locking fix in regulatory * some encryption-related fixes * tag 'mac80211-for-net-2021-01-18.2' of git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211: mac80211: check if atf has been disabled in __ieee80211_schedule_txq mac80211: do not drop tx nulldata packets on encrypted links mac80211: fix encryption key selection for 802.3 xmit mac80211: fix fast-rx encryption check mac80211: fix incorrect strlen of .write in debugfs cfg80211: fix a kerneldoc markup cfg80211: Save the regulatory domain with a lock cfg80211/mac80211: fix kernel-doc for SAR APIs ==================== Link: https://lore.kernel.org/r/20210118204750.7243-1-johannes@sipsolutions.net Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2021-01-18nvme-pci: allow use of cmb on v1.4 controllersKlaus Jensen
Since NVMe v1.4 the Controller Memory Buffer must be explicitly enabled by the host. Signed-off-by: Klaus Jensen <k.jensen@samsung.com> [hch: avoid a local variable and add a comment] Signed-off-by: Christoph Hellwig <hch@lst.de>
2021-01-16netfilter: nft_dynset: honor stateful expressions in set definitionPablo Neira Ayuso
If the set definition contains stateful expressions, allocate them for the newly added entries from the packet path. Fixes: 65038428b2c6 ("netfilter: nf_tables: allow to specify stateful expression in set definition") Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2021-01-15Merge tag 'for-5.11/dm-fixes-1' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm Pull device mapper fixes from Mike Snitzer: - Fix DM-raid's raid1 discard limits so discards work. - Select missing Kconfig dependencies for DM integrity and zoned targets. - Four fixes for DM crypt target's support to optionally bypass kcryptd workqueues. - Fix DM snapshot merge supports missing data flushes before committing metadata. - Fix DM integrity data device flushing when external metadata is used. - Fix DM integrity's maximum number of supported constructor arguments that user can request when creating an integrity device. - Eliminate DM core ioctl logging noise when an ioctl is issued without required CAP_SYS_RAWIO permission. * tag 'for-5.11/dm-fixes-1' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm: dm crypt: defer decryption to a tasklet if interrupts disabled dm integrity: fix the maximum number of arguments dm crypt: do not call bio_endio() from the dm-crypt tasklet dm integrity: fix flush with external metadata device dm: eliminate potential source of excessive kernel log noise dm snapshot: flush merged data before committing metadata dm crypt: use GFP_ATOMIC when allocating crypto requests from softirq dm crypt: do not wait for backlogged crypto request completion in softirq dm zoned: select CONFIG_CRC32 dm integrity: select CRYPTO_SKCIPHER dm raid: fix discard limits for raid1
2021-01-15Merge branch 'akpm' (patches from Andrew)Linus Torvalds
Merge misc fixes from Andrew Morton: "10 patches. Subsystems affected by this patch series: MAINTAINERS and mm (slub, pagealloc, memcg, kasan, vmalloc, migration, hugetlb, memory-failure, and process_vm_access)" * emailed patches from Andrew Morton <akpm@linux-foundation.org>: mm/process_vm_access.c: include compat.h mm,hwpoison: fix printing of page flags MAINTAINERS: add Vlastimil as slab allocators maintainer mm/hugetlb: fix potential missing huge page size info mm: migrate: initialize err in do_migrate_pages mm/vmalloc.c: fix potential memory leak arm/kasan: fix the array size of kasan_early_shadow_pte[] mm/memcontrol: fix warning in mem_cgroup_page_lruvec() mm/page_alloc: add a missing mm_page_alloc_zone_locked() tracepoint mm, slub: consider rest of partial list if acquire_slab() fails
2021-01-15Merge tag 'arm64-fixes' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux Pull arm64 fixes from Catalin Marinas: - Set the minimum GCC version to 5.1 for arm64 due to earlier compiler bugs. - Make atomic helpers __always_inline to avoid a section mismatch when compiling with clang. - Fix the CMA and crashkernel reservations to use ZONE_DMA (remove the arm64_dma32_phys_limit variable, no longer needed with a dynamic ZONE_DMA sizing in 5.11). - Remove redundant IRQ flag tracing that was leaving lockdep inconsistent with the hardware state. - Revert perf events based hard lockup detector that was causing smp_processor_id() to be called in preemptible context. - Some trivial cleanups - spelling fix, renaming S_FRAME_SIZE to PT_REGS_SIZE, function prototypes added. * tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux: arm64: selftests: Fix spelling of 'Mismatch' arm64: syscall: include prototype for EL0 SVC functions compiler.h: Raise minimum version of GCC to 5.1 for arm64 arm64: make atomic helpers __always_inline arm64: rename S_FRAME_SIZE to PT_REGS_SIZE Revert "arm64: Enable perf events based hard lockup detector" arm64: entry: remove redundant IRQ flag tracing arm64: Remove arm64_dma32_phys_limit and its uses
2021-01-15Merge tag 'for-linus-5.11-rc4-tag' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip Pull xen fixes from Juergen Gross: - A series to fix a regression when running as a fully virtualized guest on an old Xen hypervisor not supporting PV interrupt callbacks for HVM guests. - A patch to add support to query Xen resource sizes (setting was possible already) from user mode. * tag 'for-linus-5.11-rc4-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip: x86/xen: Fix xen_hvm_smp_init() when vector callback not available x86/xen: Don't register Xen IPIs when they aren't going to be used x86/xen: Add xen_no_vector_callback option to test PCI INTX delivery xen: Set platform PCI device INTX affinity to CPU0 xen: Fix event channel callback via INTX/GSI xen/privcmd: allow fetching resource sizes
2021-01-15compiler.h: Raise minimum version of GCC to 5.1 for arm64Will Deacon
GCC versions >= 4.9 and < 5.1 have been shown to emit memory references beyond the stack pointer, resulting in memory corruption if an interrupt is taken after the stack pointer has been adjusted but before the reference has been executed. This leads to subtle, infrequent data corruption such as the EXT4 problems reported by Russell King at the link below. Life is too short for buggy compilers, so raise the minimum GCC version required by arm64 to 5.1. Reported-by: Russell King <linux@armlinux.org.uk> Suggested-by: Arnd Bergmann <arnd@kernel.org> Signed-off-by: Will Deacon <will@kernel.org> Tested-by: Nathan Chancellor <natechancellor@gmail.com> Reviewed-by: Nick Desaulniers <ndesaulniers@google.com> Reviewed-by: Nathan Chancellor <natechancellor@gmail.com> Acked-by: Linus Torvalds <torvalds@linux-foundation.org> Cc: <stable@vger.kernel.org> Cc: Theodore Ts'o <tytso@mit.edu> Cc: Florian Weimer <fweimer@redhat.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Nick Desaulniers <ndesaulniers@google.com> Link: https://lore.kernel.org/r/20210105154726.GD1551@shell.armlinux.org.uk Link: https://lore.kernel.org/r/20210112224832.10980-1-will@kernel.org Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2021-01-14Merge tag 'net-5.11-rc4' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net Pull networking fixes from Jakub Kicinski: "We have a few fixes for long standing issues, in particular Eric's fix to not underestimate the skb sizes, and my fix for brokenness of register_netdevice() error path. They may uncover other bugs so we will keep an eye on them. Also included are Willem's fixes for kmap(_atomic). Looking at the "current release" fixes, it seems we are about one rc behind a normal cycle. We've previously seen an uptick of "people had run their test suites" / "humans actually tried to use new features" fixes between rc2 and rc3. Summary: Current release - regressions: - fix feature enforcement to allow NETIF_F_HW_TLS_TX if IP_CSUM && IPV6_CSUM - dcb: accept RTM_GETDCB messages carrying set-like DCB commands if user is admin for backward-compatibility - selftests/tls: fix selftests build after adding ChaCha20-Poly1305 Current release - always broken: - ppp: fix refcount underflow on channel unbridge - bnxt_en: clear DEFRAG flag in firmware message when retry flashing - smc: fix out of bound access in the new netlink interface Previous releases - regressions: - fix use-after-free with UDP GRO by frags - mptcp: better msk-level shutdown - rndis_host: set proper input size for OID_GEN_PHYSICAL_MEDIUM request - i40e: xsk: fix potential NULL pointer dereferencing Previous releases - always broken: - skb frag: kmap_atomic fixes - avoid 32 x truesize under-estimation for tiny skbs - fix issues around register_netdevice() failures - udp: prevent reuseport_select_sock from reading uninitialized socks - dsa: unbind all switches from tree when DSA master unbinds - dsa: clear devlink port type before unregistering slave netdevs - can: isotp: isotp_getname(): fix kernel information leak - mlxsw: core: Thermal control fixes - ipv6: validate GSO SKB against MTU before finish IPv6 processing - stmmac: use __napi_schedule() for PREEMPT_RT - net: mvpp2: remove Pause and Asym_Pause support Misc: - remove from MAINTAINERS folks who had been inactive for >5yrs" * tag 'net-5.11-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (58 commits) mptcp: fix locking in mptcp_disconnect() net: Allow NETIF_F_HW_TLS_TX if IP_CSUM && IPV6_CSUM MAINTAINERS: dccp: move Gerrit Renker to CREDITS MAINTAINERS: ipvs: move Wensong Zhang to CREDITS MAINTAINERS: tls: move Aviad to CREDITS MAINTAINERS: ena: remove Zorik Machulsky from reviewers MAINTAINERS: vrf: move Shrijeet to CREDITS MAINTAINERS: net: move Alexey Kuznetsov to CREDITS MAINTAINERS: altx: move Jay Cliburn to CREDITS net: avoid 32 x truesize under-estimation for tiny skbs nt: usb: USB_RTL8153_ECM should not default to y net: stmmac: fix taprio configuration when base_time is in the past net: stmmac: fix taprio schedule configuration net: tip: fix a couple kernel-doc markups net: sit: unregister_netdevice on newlink's error path net: stmmac: Fixed mtu channged by cache aligned cxgb4/chtls: Fix tid stuck due to wrong update of qid i40e: fix potential NULL pointer dereferencing net: stmmac: use __napi_schedule() for PREEMPT_RT can: mcp251xfd: mcp251xfd_handle_rxif_one(): fix wrong NULL pointer check ...
2021-01-14cfg80211: fix a kerneldoc markupMauro Carvalho Chehab
A function has a different name between their prototype and its kernel-doc markup: ../include/net/cfg80211.h:1766: warning: expecting prototype for struct cfg80211_sar_chan_ranges. Prototype was for struct cfg80211_sar_freq_ranges instead Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org> Link: https://lore.kernel.org/r/c7ed4bc4d9e992ead16d3d2df246f3b56dbfb1fb.1610610937.git.mchehab+huawei@kernel.org Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2021-01-14x86/entry: Emit a symbol for register restoring thunkNick Desaulniers
Arnd found a randconfig that produces the warning: arch/x86/entry/thunk_64.o: warning: objtool: missing symbol for insn at offset 0x3e when building with LLVM_IAS=1 (Clang's integrated assembler). Josh notes: With the LLVM assembler not generating section symbols, objtool has no way to reference this code when it generates ORC unwinder entries, because this code is outside of any ELF function. The limitation now being imposed by objtool is that all code must be contained in an ELF symbol. And .L symbols don't create such symbols. So basically, you can use an .L symbol *inside* a function or a code segment, you just can't use the .L symbol to contain the code using a SYM_*_START/END annotation pair. Fangrui notes that this optimization is helpful for reducing image size when compiling with -ffunction-sections and -fdata-sections. I have observed on the order of tens of thousands of symbols for the kernel images built with those flags. A patch has been authored against GNU binutils to match this behavior of not generating unused section symbols ([1]), so this will also become a problem for users of GNU binutils once they upgrade to 2.36. Omit the .L prefix on a label so that the assembler will emit an entry into the symbol table for the label, with STB_LOCAL binding. This enables objtool to generate proper unwind info here with LLVM_IAS=1 or GNU binutils 2.36+. [ bp: Massage commit message. ] Reported-by: Arnd Bergmann <arnd@arndb.de> Suggested-by: Josh Poimboeuf <jpoimboe@redhat.com> Suggested-by: Borislav Petkov <bp@alien8.de> Suggested-by: Mark Brown <broonie@kernel.org> Signed-off-by: Nick Desaulniers <ndesaulniers@google.com> Signed-off-by: Borislav Petkov <bp@suse.de> Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org> Acked-by: Josh Poimboeuf <jpoimboe@redhat.com> Link: https://lkml.kernel.org/r/20210112194625.4181814-1-ndesaulniers@google.com Link: https://github.com/ClangBuiltLinux/linux/issues/1209 Link: https://reviews.llvm.org/D93783 Link: https://sourceware.org/binutils/docs/as/Symbol-Names.html Link: https://sourceware.org/git/?p=binutils-gdb.git;a=commit;h=d1bcae833b32f1408485ce69f844dcd7ded093a8 [1]
2021-01-13xen: Fix event channel callback via INTX/GSIDavid Woodhouse
For a while, event channel notification via the PCI platform device has been broken, because we attempt to communicate with xenstore before we even have notifications working, with the xs_reset_watches() call in xs_init(). We tend to get away with this on Xen versions below 4.0 because we avoid calling xs_reset_watches() anyway, because xenstore might not cope with reading a non-existent key. And newer Xen *does* have the vector callback support, so we rarely fall back to INTX/GSI delivery. To fix it, clean up a bit of the mess of xs_init() and xenbus_probe() startup. Call xs_init() directly from xenbus_init() only in the !XS_HVM case, deferring it to be called from xenbus_probe() in the XS_HVM case instead. Then fix up the invocation of xenbus_probe() to happen either from its device_initcall if the callback is available early enough, or when the callback is finally set up. This means that the hack of calling xenbus_probe() from a workqueue after the first interrupt, or directly from the PCI platform device setup, is no longer needed. Signed-off-by: David Woodhouse <dwmw@amazon.co.uk> Reviewed-by: Boris Ostrovsky <boris.ostrovsky@oracle.com> Link: https://lore.kernel.org/r/20210113132606.422794-2-dwmw2@infradead.org Signed-off-by: Juergen Gross <jgross@suse.com>