kernel/linux.git/drivers/hv, branch v4.11.5

Drivers: hv: vmbus: Don't leak memory when a channel is rescinded

2017-03-16T07:42:33+00:00

When we close a channel that has been rescinded, we will leak memory since vmbus_teardown_gpadl() returns an error. Fix this so that we can properly cleanup the memory allocated to the ring buffers. Fixes: ccb61f8a99e6 ("Drivers: hv: vmbus: Fix a rescind handling bug") Signed-off-by: K. Y. Srinivasan Signed-off-by: Greg Kroah-Hartman

Drivers: hv: vmbus: Don't leak channel ids

2017-03-16T07:42:33+00:00

If we cannot allocate memory for the channel, free the relid associated with the channel. Signed-off-by: K. Y. Srinivasan Cc: Signed-off-by: Greg Kroah-Hartman

Drivers: hv: util: don't forget to init host_ts.lock

2017-03-16T07:42:00+00:00

Without the patch, I always get a "BUG: spinlock bad magic" warning. Fixes: 3716a49a81ba ("hv_utils: implement Hyper-V PTP source") Signed-off-by: Dexuan Cui Cc: Vitaly Kuznetsov Cc: "K. Y. Srinivasan" Cc: Haiyang Zhang Cc: Stephen Hemminger Signed-off-by: K. Y. Srinivasan Signed-off-by: Greg Kroah-Hartman

Drivers: hv: util: move waiting for release to hv_utils_transport itself

2017-03-16T07:42:00+00:00

Waiting for release_event in all three drivers introduced issues on release as on_reset() hook is not always called. E.g. if the device was never opened we will never get the completion. Move the waiting code to hvutil_transport_destroy() and make sure it is only called when the device is open. hvt->lock serialization should guarantee the absence of races. Fixes: 5a66fecbf6aa ("Drivers: hv: util: kvp: Fix a rescind processing issue") Fixes: 20951c7535b5 ("Drivers: hv: util: Fcopy: Fix a rescind processing issue") Fixes: d77044d142e9 ("Drivers: hv: util: Backup: Fix a rescind processing issue") Reported-by: Dexuan Cui Tested-by: Dexuan Cui Signed-off-by: Vitaly Kuznetsov Signed-off-by: K. Y. Srinivasan Signed-off-by: Greg Kroah-Hartman

vmbus: remove hv_event_tasklet_disable/enable

2017-03-16T07:42:00+00:00

With the recent introduction of per-channel tasklet, we need to update the way we handle the 3 concurrency issues: 1. hv_process_channel_removal -> percpu_channel_deq vs. vmbus_chan_sched -> list_for_each_entry(..., percpu_list); 2. vmbus_process_offer -> percpu_channel_enq/deq vs. vmbus_chan_sched. 3. vmbus_close_internal vs. the per-channel tasklet vmbus_on_event; The first 2 issues can be handled by Stephen's recent patch "vmbus: use rcu for per-cpu channel list", and the third issue can be handled by calling tasklet_disable in vmbus_close_internal here. We don't need the original hv_event_tasklet_disable/enable since we now use per-channel tasklet instead of the previous per-CPU tasklet, and actually we must remove them due to the side effect now: vmbus_process_offer -> hv_event_tasklet_enable -> tasklet_schedule will start the per-channel callback prematurely, cauing NULL dereferencing (the channel may haven't been properly configured to run the callback yet). Fixes: 631e63a9f346 ("vmbus: change to per channel tasklet") Signed-off-by: Dexuan Cui Cc: "K. Y. Srinivasan" Cc: Haiyang Zhang Cc: Stephen Hemminger Tested-by: Vitaly Kuznetsov Signed-off-by: K. Y. Srinivasan Signed-off-by: Greg Kroah-Hartman

vmbus: use rcu for per-cpu channel list

2017-03-16T07:42:00+00:00

The per-cpu channel list is now referred to in the interrupt routine. This is mostly safe since the host will not normally generate an interrupt when channel is being deleted but if it did then there would be a use after free problem. To solve, this use RCU protection on ther per-cpu list. Fixes: 631e63a9f346 ("vmbus: change to per channel tasklet") Signed-off-by: Stephen Hemminger Signed-off-by: K. Y. Srinivasan Signed-off-by: Greg Kroah-Hartman

scripts/spelling.txt: add "disble(d)" pattern and fix typo instances

2017-03-10T01:01:09+00:00

Fix typos and add the following to the scripts/spelling.txt: disble||disable disbled||disabled I kept the TSL2563_INT_DISBLED in /drivers/iio/light/tsl2563.c untouched. The macro is not referenced at all, but this commit is touching only comment blocks just in case. Link: http://lkml.kernel.org/r/1481573103-11329-20-git-send-email-yamada.masahiro@socionext.com Signed-off-by: Masahiro Yamada Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

sched/headers: Prepare for new header dependencies before moving code to

2017-03-02T07:42:36+00:00

We are going to split out of , which will have to be picked up from other headers and a couple of .c files. Create a trivial placeholder file that just maps to to make this patch obviously correct and bisectable. Include the new header in the files that are going to need it. Acked-by: Linus Torvalds Cc: Mike Galbraith Cc: Peter Zijlstra Cc: Thomas Gleixner Cc: linux-kernel@vger.kernel.org Signed-off-by: Ingo Molnar

vmbus: replace modulus operation with subtraction

2017-02-14T18:20:35+00:00

Takes less clock cycles to check for ring wrap and subtract than to do a modulus instruction. Signed-off-by: Stephen Hemminger Signed-off-by: K. Y. Srinivasan Signed-off-by: Greg Kroah-Hartman

vmbus: constify parameters where possible

2017-02-14T18:20:35+00:00

Functions that just query state of ring buffer can have parameters marked const. Signed-off-by: Stephen Hemminger Signed-off-by: K. Y. Srinivasan Signed-off-by: Greg Kroah-Hartman