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- Jan 03, 2022
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Alan Stern authored
Bugzilla #213839 reports a 7-port hub that doesn't work properly when devices are plugged into some of the ports; the kernel goes into an unending disconnect/reinitialize loop as shown in the bug report. This "7-port hub" comprises two four-port hubs with one plugged into the other; the failures occur when a device is plugged into one of the downstream hub's ports. (These hubs have other problems too. For example, they bill themselves as USB-2.0 compliant but they only run at full speed.) It turns out that the failures are caused by bugs in both the kernel and the hub. The hub's bug is that it reports a different bmAttributes value in its configuration descriptor following a remote wakeup (0xe0 before, 0xc0 after -- the wakeup-support bit has changed). The kernel's bug is inside the hub driver's resume handler. When hub_activate() sees that one of the hub's downstream ports got a wakeup request from a child device, it notes this fact by setting the corresponding bit in the hub->change_bits variable. But this variable is meant for connection changes, not wakeup events; setting it causes the driver to believe the downstream port has been disconnected and then connected again (in addition to having received a wakeup request). Because of this, the hub driver then tries to check whether the device currently plugged into the downstream port is the same as the device that had been attached there before. Normally this check succeeds and wakeup handling continues with no harm done (which is why the bug remained undetected until now). But with these dodgy hubs, the check fails because the config descriptor has changed. This causes the hub driver to reinitialize the child device, leading to the disconnect/reinitialize loop described in the bug report. The proper way to note reception of a downstream wakeup request is to set a bit in the hub->event_bits variable instead of hub->change_bits. That way the hub driver will realize that something has happened to the port but will not think the port and child device have been disconnected. This patch makes that change. Cc: <stable@vger.kernel.org> Tested-by:
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Alan Stern authored
When the USB core code for getting root-hub status reports was originally written, it was assumed that the hub driver would be its only caller. But this isn't true now; user programs can use usbfs to communicate with root hubs and get status reports. When they do this, they may use a transfer_buffer that is smaller than the data returned by the HCD, which will lead to a buffer overflow error when usb_hcd_poll_rh_status() tries to store the status data. This was discovered by syzbot: BUG: KASAN: slab-out-of-bounds in memcpy include/linux/fortify-string.h:225 [inline] BUG: KASAN: slab-out-of-bounds in usb_hcd_poll_rh_status+0x5f4/0x780 drivers/usb/core/hcd.c:776 Write of size 2 at addr ffff88801da403c0 by task syz-executor133/4062 This patch fixes the bug by reducing the amount of status data if it won't fit in the transfer_buffer. If some data gets discarded then the URB's completion status is set to -EOVERFLOW rather than 0, to let the user know what happened. Reported-and-tested-by:
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Miaoqian Lin authored
Add the missing platform_device_put() before return from dwc3_qcom_acpi_register_core in the error handling case. Signed-off-by:
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Hangyu Hua authored
dev->config and dev->hs_config and dev->dev need to be cleaned if dev_config fails to avoid UAF. Acked-by:
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Hangyu Hua authored
dev->buf does not need to be released if it already exists before executing dev_config. Acked-by:
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Greg Kroah-Hartman authored
Merge tag 'thunderbolt-for-v5.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/westeri/thunderbolt into usb-next Mika writes: thunderbolt: Changes for v5.17 merge window This includes following Thunderbolt/USB4 changes for the v5.17 merge window: * Enable low-power link state (CL0s) for USB4 and Intel Titan Ridge devices * Add support for TMU (Time Management Unit) uni-directional mode * Power management improvements (suspend-to-disk, runtime PM) * USB4 compatibility fixes * Minor fixes and cleanups. All these have been in linux-next with no reported issues. * tag 'thunderbolt-for-v5.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/westeri/thunderbolt: thunderbolt: Add module parameter for CLx disabling thunderbolt: Enable CL0s for Intel Titan Ridge thunderbolt: Rename Intel TB_VSE_CAP_IECS capability thunderbolt: Implement TMU time disruption for Intel Titan Ridge thunderbolt: Move usb4_switch_wait_for_bit() to switch.c thunderbolt: Add CL0s support for USB4 routers thunderbolt: Add TMU uni-directional mode thunderbolt: Check return value of kmemdup() in icm_handle_event() thunderbolt: Do not dereference fwnode in struct device thunderbolt: Add debug logging of DisplayPort resource allocation thunderbolt: Do not program path HopIDs for USB4 routers thunderbolt: Do not allow subtracting more NFC credits than configured thunderbolt: Runtime resume USB4 port when retimers are scanned thunderbolt: Tear down existing tunnels when resuming from hibernate thunderbolt: Runtime PM activate both ends of the device link thunderbolt: xdomain: Avoid potential stack OOB read
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Greg Kroah-Hartman authored
We need the USB fixes in here as well. Signed-off-by:
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- Jan 02, 2022
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Linus Torvalds authored
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Linus Torvalds authored
Merge tag 'perf-tools-fixes-for-v5.16-2022-01-02' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux Pull perf tools fixes from Arnaldo Carvalho de Melo: - Fix TUI exit screen refresh race condition in 'perf top'. - Fix parsing of Intel PT VM time correlation arguments. - Honour CPU filtering command line request of a script's switch events in 'perf script'. - Fix printing of switch events in Intel PT python script. - Fix duplicate alias events list printing in 'perf list', noticed on heterogeneous arm64 systems. - Fix return value of ids__new(), users expect NULL for failure, not ERR_PTR(-ENOMEM). * tag 'perf-tools-fixes-for-v5.16-2022-01-02' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux: perf top: Fix TUI exit screen refresh race condition perf pmu: Fix alias events list perf scripts python: intel-pt-events.py: Fix printing of switch events perf script: Fix CPU filtering of a script's switch events perf intel-pt: Fix parsing of VM time correlation arguments perf expr: Fix return value of ids__new()
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git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linuxLinus Torvalds authored
Pull i2c fixes from Wolfram Sang: "Better input validation for compat ioctls and a documentation bugfix for 5.16" * 'i2c/for-current' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux: Docs: Fixes link to I2C specification i2c: validate user data in compat ioctl
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull x86 fix from Borislav Petkov: - Use the proper CONFIG symbol in a preprocessor check. * tag 'x86_urgent_for_v5.16_rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/build: Use the proper name CONFIG_FW_LOADER
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yaowenbin authored
When the following command is executed several times, a coredump file is generated. $ timeout -k 9 5 perf top -e task-clock ******* ******* ******* 0.01% [kernel] [k] __do_softirq 0.01% libpthread-2.28.so [.] __pthread_mutex_lock 0.01% [kernel] [k] __ll_sc_atomic64_sub_return double free or corruption (!prev) perf top --sort comm,dso timeout: the monitored command dumped core When we terminate "perf top" using sending signal method, SLsmg_reset_smg() called. SLsmg_reset_smg() resets the SLsmg screen management routines by freeing all memory allocated while it was active. However SLsmg_reinit_smg() maybe be called by another thread. SLsmg_reinit_smg() will free the same memory accessed by SLsmg_reset_smg(), thus it results in a double free. SLsmg_reinit_smg() is called already protected by ui__lock, so we fix the problem by adding pthread_mutex_trylock of ui__lock when calling SLsmg_reset_smg(). Signed-off-by:
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John Garry authored
Commit 0e0ae874 ("perf list: Display hybrid PMU events with cpu type") changes the event list for uncore PMUs or arm64 heterogeneous CPU systems, such that duplicate aliases are incorrectly listed per PMU (which they should not be), like: # perf list ... unc_cbo_cache_lookup.any_es [Unit: uncore_cbox L3 Lookup any request that access cache and found line in E or S-state] unc_cbo_cache_lookup.any_es [Unit: uncore_cbox L3 Lookup any request that access cache and found line in E or S-state] unc_cbo_cache_lookup.any_i [Unit: uncore_cbox L3 Lookup any request that access cache and found line in I-state] unc_cbo_cache_lookup.any_i [Unit: uncore_cbox L3 Lookup any request that access cache and found line in I-state] ... Notice how the events are listed twice. The named commit changed how we remove duplicate events, in that events for different PMUs are not treated as duplicates. I suppose this is to handle how "Each hybrid pmu event has been assigned with a pmu name". Fix PMU alias listing by restoring behaviour to remove duplicates for non-hybrid PMUs. Fixes: 0e0ae874 ("perf list: Display hybrid PMU events with cpu type") Signed-off-by:
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- Jan 01, 2022
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git://git.kernel.org/pub/scm/linux/kernel/git/dtor/inputLinus Torvalds authored
Pull input fixes from Dmitry Torokhov: "Two small fixups for spaceball joystick driver and appletouch touchpad driver" * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input: Input: spaceball - fix parsing of movement data packets Input: appletouch - initialize work before device registration
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- Dec 31, 2021
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Mel Gorman authored
Hugh Dickins reported the following My tmpfs swapping load (tweaked to use huge pages more heavily than in real life) is far from being a realistic load: but it was notably slowed down by your throttling mods in 5.16-rc, and this patch makes it well again - thanks. But: it very quickly hit NULL pointer until I changed that last line to if (first_pgdat) consider_reclaim_throttle(first_pgdat, sc); The likely issue is that huge pages are a major component of the test workload. When this is the case, first_pgdat may never get set if compaction is ready to continue due to this check if (IS_ENABLED(CONFIG_COMPACTION) && sc->order > PAGE_ALLOC_COSTLY_ORDER && compaction_ready(zone, sc)) { sc->compaction_ready = true; continue; } If this was true for every zone in the zonelist, first_pgdat would never get set resulting in a NULL pointer exception. Link: https://lkml.kernel.org/r/20211209095453.GM3366@techsingularity.net Fixes: 1b4e3f26 ("mm: vmscan: Reduce throttling due to a failure to make progress") Signed-off-by: -
Mel Gorman authored
Mike Galbraith, Alexey Avramov and Darrick Wong all reported similar problems due to reclaim throttling for excessive lengths of time. In Alexey's case, a memory hog that should go OOM quickly stalls for several minutes before stalling. In Mike and Darrick's cases, a small memcg environment stalled excessively even though the system had enough memory overall. Commit 69392a40 ("mm/vmscan: throttle reclaim when no progress is being made") introduced the problem although commit a19594ca ("mm/vmscan: increase the timeout if page reclaim is not making progress") made it worse. Systems at or near an OOM state that cannot be recovered must reach OOM quickly and memcg should kill tasks if a memcg is near OOM. To address this, only stall for the first zone in the zonelist, reduce the timeout to 1 tick for VMSCAN_THROTTLE_NOPROGRESS and only stall if the scan control nr_reclaimed is 0, kswapd is still active and there were excessive pages pending for writeback. If kswapd has stopped reclaiming due to excessive failures, do not stall at all so that OOM triggers relatively quickly. Similarly, if an LRU is simply congested, only lightly throttle similar to NOPROGRESS. Alexey's original case was the most straight forward for i in {1..3}; do tail /dev/zero; done On vanilla 5.16-rc1, this test stalled heavily, after the patch the test completes in a few seconds similar to 5.15. Alexey's second test case added watching a youtube video while tail runs 10 times. On 5.15, playback only jitters slightly, 5.16-rc1 stalls a lot with lots of frames missing and numerous audio glitches. With this patch applies, the video plays similarly to 5.15. [lkp@intel.com: Fix W=1 build warning] Link: https://lore.kernel.org/r/99e779783d6c7fce96448a3402061b9dc1b3b602.camel@gmx.de Link: https://lore.kernel.org/r/20211124011954.7cab9bb4@mail.inbox.lv Link: https://lore.kernel.org/r/20211022144651.19914-1-mgorman@techsingularity.net Link: https://lore.kernel.org/r/20211202150614.22440-1-mgorman@techsingularity.net Link: https://linux-regtracking.leemhuis.info/regzbot/regression/20211124011954.7cab9bb4@mail.inbox.lv/ Reported-and-tested-by:
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Linus Torvalds authored
Merge misc mm fixes from Andrew Morton: "2 patches. Subsystems affected by this patch series: mm (userfaultfd and damon)" * akpm: mm/damon/dbgfs: fix 'struct pid' leaks in 'dbgfs_target_ids_write()' userfaultfd/selftests: fix hugetlb area allocations
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git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsiLinus Torvalds authored
Pull SCSI fixes from James Bottomley: "Three fixes, all in drivers. The lpfc one doesn't look exploitable, but nasty things could happen in string operations if mybuf ends up with an on stack unterminated string" * tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: scsi: vmw_pvscsi: Set residual data length conditionally scsi: libiscsi: Fix UAF in iscsi_conn_get_param()/iscsi_conn_teardown() scsi: lpfc: Terminate string in lpfc_debugfs_nvmeio_trc_write()
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SeongJae Park authored
DAMON debugfs interface increases the reference counts of 'struct pid's for targets from the 'target_ids' file write callback ('dbgfs_target_ids_write()'), but decreases the counts only in DAMON monitoring termination callback ('dbgfs_before_terminate()'). Therefore, when 'target_ids' file is repeatedly written without DAMON monitoring start/termination, the reference count is not decreased and therefore memory for the 'struct pid' cannot be freed. This commit fixes this issue by decreasing the reference counts when 'target_ids' is written. Link: https://lkml.kernel.org/r/20211229124029.23348-1-sj@kernel.org Fixes: 4bc05954 ("mm/damon: implement a debugfs-based user space interface") Signed-off-by: -
Mike Kravetz authored
Currently, userfaultfd selftest for hugetlb as run from run_vmtests.sh or any environment where there are 'just enough' hugetlb pages will always fail with: testing events (fork, remap, remove): ERROR: UFFDIO_COPY error: -12 (errno=12, line=616) The ENOMEM error code implies there are not enough hugetlb pages. However, there are free hugetlb pages but they are all reserved. There is a basic problem with the way the test allocates hugetlb pages which has existed since the test was originally written. Due to the way 'cleanup' was done between different phases of the test, this issue was masked until recently. The issue was uncovered by commit 8ba6e864 ("userfaultfd/selftests: reinitialize test context in each test"). For the hugetlb test, src and dst areas are allocated as PRIVATE mappings of a hugetlb file. This means that at mmap time, pages are reserved for the src and dst areas. At the start of event testing (and other tests) the src area is populated which results in allocation of huge pages to fill the area and consumption of reserves associated with the area. Then, a child is forked to fault in the dst area. Note that the dst area was allocated in the parent and hence the parent owns the reserves associated with the mapping. The child has normal access to the dst area, but can not use the reserves created/owned by the parent. Thus, if there are no other huge pages available allocation of a page for the dst by the child will fail. Fix by not creating reserves for the dst area. In this way the child can use free (non-reserved) pages. Also, MAP_PRIVATE of a file only makes sense if you are interested in the contents of the file before making a COW copy. The test does not do this. So, just use MAP_ANONYMOUS | MAP_HUGETLB to create an anonymous hugetlb mapping. There is no need to create a hugetlb file in the non-shared case. Link: https://lkml.kernel.org/r/20211217172919.7861-1-mike.kravetz@oracle.com Signed-off-by:
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Deep Majumder authored
The link to the I2C specification is broken. Although "https://www.nxp.com" hosts Rev 7 (2021) of this specification, it is behind a login-wall. Thus, an additional link has been added (which doesn't require a login) and the NXP official docs link has been updated. Signed-off-by:
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Pavel Skripkin authored
Wrong user data may cause warning in i2c_transfer(), ex: zero msgs. Userspace should not be able to trigger warnings, so this patch adds validation checks for user data in compact ioctl to prevent reported warnings Reported-and-tested-by:
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Leo L. Schwab authored
The spaceball.c module was not properly parsing the movement reports coming from the device. The code read axis data as signed 16-bit little-endian values starting at offset 2. In fact, axis data in Spaceball movement reports are signed 16-bit big-endian values starting at offset 3. This was determined first by visually inspecting the data packets, and later verified by consulting: http://spacemice.org/pdf/SpaceBall_2003-3003_Protocol.pdf If this ever worked properly, it was in the time before Git... Signed-off-by:
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Pavel Skripkin authored
Syzbot has reported warning in __flush_work(). This warning is caused by work->func == NULL, which means missing work initialization. This may happen, since input_dev->close() calls cancel_work_sync(&dev->work), but dev->work initalization happens _after_ input_register_device() call. So this patch moves dev->work initialization before registering input device Fixes: 5a6eb676 ("Input: appletouch - improve powersaving for Geyser3 devices") Reported-and-tested-by:
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git://anongit.freedesktop.org/drm/drmLinus Torvalds authored
Pull drm fixes from Dave Airlie: "This is a bit bigger than I'd like, however it has two weeks of amdgpu fixes in it, since they missed last week, which was very small. The nouveau regression is probably the biggest fix in here, and it needs to go into 5.15 as well, two i915 fixes, and then a scattering of amdgpu fixes. The biggest fix in there is for a fencing NULL pointer dereference, the rest are pretty minor. For the misc team, I've pulled the two misc fixes manually since I'm not sure what is happening at this time of year! The amdgpu maintainers have the outstanding runpm regression to fix still, they are just working through the last bits of it now. Summary: nouveau: - fencing regression fix i915: - Fix possible uninitialized variable - Fix composite fence seqno icrement on each fence creation amdgpu: - Fencing fix - XGMI fix - VCN regression fix - IP discovery regression fixes - Fix runpm documentation - Suspend/resume fixes - Yellow Carp display fixes - MCLK power management fix - dma-buf fix" * tag 'drm-fixes-2021-12-31' of git://anongit.freedesktop.org/drm/drm: drm/amd/display: Changed pipe split policy to allow for multi-display pipe split drm/amd/display: Fix USB4 null pointer dereference in update_psp_stream_config drm/amd/display: Set optimize_pwr_state for DCN31 drm/amd/display: Send s0i2_rdy in stream_count == 0 optimization drm/amd/display: Added power down for DCN10 drm/amd/display: fix B0 TMDS deepcolor no dislay issue drm/amdgpu: no DC support for headless chips drm/amdgpu: put SMU into proper state on runpm suspending for BOCO capable platform drm/amdgpu: always reset the asic in suspend (v2) drm/amd/pm: skip setting gfx cgpg in the s0ix suspend-resume drm/i915: Increment composite fence seqno drm/i915: Fix possible uninitialized variable in parallel extension drm/amdgpu: fix runpm documentation drm/nouveau: wait for the exclusive fence after the shared ones v2 drm/amdgpu: add support for IP discovery gc_info table v2 drm/amdgpu: When the VCN(1.0) block is suspended, powergating is explicitly enabled drm/amd/pm: Fix xgmi link control on aldebaran drm/amdgpu: introduce new amdgpu_fence object to indicate the job embedded fence drm/amdgpu: fix dropped backing store handling in amdgpu_dma_buf_move_notify
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ssh://git.freedesktop.org/git/drm/drm-miscDave Airlie authored
This merges two fixes that haven't been sent to me yet, but I wanted to get in. One amdgpu fix, but one nouveau regression fixer. Signed-off-by:
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- Dec 30, 2021
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Christian Brauner authored
Make sure that finish_mount_kattr() is called after mount_kattr was succesfully built in both the success and failure case to prevent leaking any references we took when we built it. We returned early if path lookup failed thereby risking to leak an additional reference we took when building mount_kattr when an idmapped mount was requested. Cc: linux-fsdevel@vger.kernel.org Cc: stable@vger.kernel.org Fixes: 9caccd41 ("fs: introduce MOUNT_ATTR_IDMAP") Signed-off-by:
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git://git.kernel.org/pub/scm/linux/kernel/git/netdev/netLinus Torvalds authored
Pull networking fixes from Jakub Kicinski: "Including fixes from.. Santa? No regressions on our radar at this point. The igc problem fixed here was the last one I was tracking but it was broken in previous releases, anyway. Mostly driver fixes and a couple of largish SMC fixes. Current release - regressions: - xsk: initialise xskb free_list_node, fixup for a -rc7 fix Current release - new code bugs: - mlx5: handful of minor fixes: - use first online CPU instead of hard coded CPU - fix some error handling paths in 'mlx5e_tc_add_fdb_flow()' - fix skb memory leak when TC classifier action offloads are disabled - fix memory leak with rules with internal OvS port Previous releases - regressions: - igc: do not enable crosstimestamping for i225-V models Previous releases - always broken: - udp: use datalen to cap ipv6 udp max gso segments - fix use-after-free in tw_timer_handler due to early free of stats - smc: fix kernel panic caused by race of smc_sock - smc: don't send CDC/LLC message if link not ready, avoid timeouts - sctp: use call_rcu to free endpoint, avoid UAF in sock diag - bridge: mcast: add and enforce query interval minimum - usb: pegasus: do not drop long Ethernet frames - mlx5e: fix ICOSQ recovery flow for XSK - nfc: uapi: use kernel size_t to fix user-space builds" * tag 'net-5.16-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (47 commits) fsl/fman: Fix missing put_device() call in fman_port_probe selftests: net: using ping6 for IPv6 in udpgro_fwd.sh Documentation: fix outdated interpretation of ip_no_pmtu_disc net/ncsi: check for error return from call to nla_put_u32 net: bridge: mcast: fix br_multicast_ctx_vlan_global_disabled helper net: fix use-after-free in tw_timer_handler selftests: net: Fix a typo in udpgro_fwd.sh selftests/net: udpgso_bench_tx: fix dst ip argument net: bridge: mcast: add and enforce startup query interval minimum net: bridge: mcast: add and enforce query interval minimum ipv6: raw: check passed optlen before reading xsk: Initialise xskb free_list_node net/mlx5e: Fix wrong features assignment in case of error net/mlx5e: TC, Fix memory leak with rules with internal port ionic: Initialize the 'lif->dbid_inuse' bitmap igc: Fix TX timestamp support for non-MSI-X platforms igc: Do not enable crosstimestamping for i225-V models net/smc: fix kernel panic caused by race of smc_sock net/smc: don't send CDC/LLC message if link not ready NFC: st21nfca: Fix memory leak in device probe and remove ...
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git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-miscLinus Torvalds authored
Pull char/misc fixes from Greg KH: "Here are two misc driver fixes for 5.16-final: - binder accounting fix to resolve reported problem - nitro_enclaves fix for mmap assert warning output Both of these have been for over a week with no reported issues" * tag 'char-misc-5.16' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: nitro_enclaves: Use get_user_pages_unlocked() call to handle mmap assert binder: fix async_free_space accounting for empty parcels
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git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usbLinus Torvalds authored
Pull USB fixes from Greg KH: "Here are some small USB driver fixes for 5.16 to resolve some reported problems: - mtu3 driver fixes - typec ucsi driver fix - xhci driver quirk added - usb gadget f_fs fix for reported crash All of these have been in linux-next for a while with no reported problems" * tag 'usb-5.16' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: usb: typec: ucsi: Only check the contract if there is a connection xhci: Fresco FL1100 controller should not have BROKEN_MSI quirk set. usb: mtu3: set interval of FS intr and isoc endpoint usb: mtu3: fix list_head check warning usb: mtu3: add memory barrier before set GPD's HWO usb: mtu3: fix interval value for intr and isoc usb: gadget: f_fs: Clear ffs_eventfd in ffs_data_clear.
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Miaoqian Lin authored
The reference taken by 'of_find_device_by_node()' must be released when not needed anymore. Add the corresponding 'put_device()' in the and error handling paths. Fixes: 18a6c85f ("fsl/fman: Add FMan Port Support") Signed-off-by:
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Jianguo Wu authored
udpgro_fwd.sh output following message: ping: 2001:db8:1::100: Address family for hostname not supported Using ping6 when pinging IPv6 addresses. Fixes: a062260a ("selftests: net: add UDP GRO forwarding self-tests") Signed-off-by:
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xu xin authored
The updating way of pmtu has changed, but documentation is still in the old way. So this patch updates the interpretation of ip_no_pmtu_disc and min_pmtu. See commit 28d35bcd ("net: ipv4: don't let PMTU updates increase route MTU") Reported-by:
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Christophe JAILLET authored
Use DECLARE_BITMAP() instead of hand writing it. Signed-off-by:
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Heikki Krogerus authored
There are no more users for the function. Reviewed-by:
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Heikki Krogerus authored
Instead of trying to keep track of the connections to the USB Type-C connectors separately, letting the component framework take care of that. From now on every USB Type-C connector will register itself as "aggregate" - component master - and anything that can be connected to it inside the system can then simply register itself as a generic component. The matching of the components and the connector shall rely on ACPI _PLD initially. Before registering itself as the aggregate, the connector will find all other ACPI devices that have matching _PLD crc hash with it (matching value in the pld_crc member of struct acpi_device), and add a component match entry for each one of them. Because only ACPI is supported for now, the driver shall only be build when ACPI is supported. This removes the need for the custom API that the driver exposed. The components and the connector can therefore exist completely independently of each other. The order in which they are registered, as well as are they modules or not, is now irrelevant. Acked-by:
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Heikki Krogerus authored
Creating link to the USB Type-C connector for every new port that is added when possible. Reviewed-by:
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Heikki Krogerus authored
Storing CRC-32 hash of the Physical Location of Device object (_PLD) with devices that have it. The hash is stored to a new struct acpi_device member "pld_crc". The hash makes it easier to find devices that share a location, as there is no need to evaluate the entire object every time. Knowledge about devices that share a location can be used in device drivers that need to know the connections to other components inside a system. USB3 ports will for example always share their location with a USB2 port. Acked-by:
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Heikki Krogerus authored
So we can use bus_for_each_dev() and others from modules. Acked-by:
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Pavel Hofman authored
Fixed wording of the req_number description in UAC1 docs. Signed-off-by:
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