Stanislav Kinsburskii c0e296f257 mshv: Fix error handling in mshv_region_pin ...

The current error handling has two issues:

First, pin_user_pages_fast() can return a short pin count (less than
requested but greater than zero) when it cannot pin all requested pages.
This is treated as success, leading to partially pinned regions being
used, which causes memory corruption.

Second, when an error occurs mid-loop, already pinned pages from the
current batch are not properly accounted for before calling
mshv_region_invalidate_pages(), causing a page reference leak.

Treat short pins as errors and fix partial batch accounting before
cleanup.

Signed-off-by: Stanislav Kinsburskii <skinsburskii@linux.microsoft.com>
Reviewed-by: Michael Kelley <mhklinux@outlook.com>
Signed-off-by: Wei Liu <wei.liu@kernel.org>

2026-03-18 16:18:49 +00:00

..

channel_mgmt.c

treewide: Replace kmalloc with kmalloc_obj for non-scalar types

2026-02-21 01:02:28 -08:00

channel.c

Drivers: hv: fix missing kernel-doc description for 'size' in request_arr_init()

2025-11-15 06:18:16 +00:00

connection.c

Convert remaining multi-line kmalloc_obj/flex GFP_KERNEL uses

2026-02-22 08:26:33 -08:00

hv_balloon.c

treewide: Replace kmalloc with kmalloc_obj for non-scalar types

2026-02-21 01:02:28 -08:00

hv_common.c

mshv: Handle insufficient root memory hypervisor statuses

2026-02-19 06:42:11 +00:00

hv_debugfs.c

…

hv_kvp.c

Convert 'alloc_obj' family to use the new default GFP_KERNEL argument

2026-02-21 17:09:51 -08:00

hv_proc.c

Convert 'alloc_obj' family to use the new default GFP_KERNEL argument

2026-02-21 17:09:51 -08:00

hv_snapshot.c

Convert 'alloc_obj' family to use the new default GFP_KERNEL argument

2026-02-21 17:09:51 -08:00

hv_trace_balloon.h

…

hv_trace.c

…

hv_trace.h

…

hv_util.c

Drivers: hv: use kmalloc_array() instead of kmalloc()

2025-12-05 23:16:49 +00:00

hv_utils_transport.c

Convert 'alloc_obj' family to use the new default GFP_KERNEL argument

2026-02-21 17:09:51 -08:00

hv_utils_transport.h

…

hv.c

Convert more 'alloc_obj' cases to default GFP_KERNEL arguments

2026-02-21 20:03:00 -08:00

hyperv_vmbus.h

mshv: Use try_cmpxchg() instead of cmpxchg()

2026-02-18 23:27:20 +00:00

Kconfig

mshv: Add support for movable memory regions

2025-12-05 23:20:49 +00:00

Makefile

mshv: Add debugfs to view hypervisor statistics

2026-02-04 06:17:05 +00:00

mshv_common.c

mshv: hide x86-specific functions on arm64

2025-12-17 18:04:15 +00:00

mshv_debugfs_counters.c

mshv: Add data for printing stats page counters

2026-02-04 06:17:05 +00:00

mshv_debugfs.c

Convert 'alloc_obj' family to use the new default GFP_KERNEL argument

2026-02-21 17:09:51 -08:00

mshv_eventfd.c

Convert 'alloc_obj' family to use the new default GFP_KERNEL argument

2026-02-21 17:09:51 -08:00

mshv_eventfd.h

mshv: clear eventfd counter on irqfd shutdown

2026-02-04 06:36:19 +00:00

mshv_irq.c

treewide: Replace kmalloc with kmalloc_obj for non-scalar types

2026-02-21 01:02:28 -08:00

mshv_portid_table.c

…

mshv_regions.c

mshv: Fix error handling in mshv_region_pin

2026-03-18 16:18:49 +00:00

mshv_root_hv_call.c

mshv: Introduce hv_deposit_memory helper functions

2026-02-19 06:38:48 +00:00

mshv_root_main.c

mshv: Fix use-after-free in mshv_map_user_memory error path

2026-03-13 21:11:18 +00:00

mshv_root.h

mshv: refactor synic init and cleanup

2026-02-25 19:09:24 +00:00

mshv_synic.c

mshv: add arm64 support for doorbell & intercept SINTs

2026-02-25 19:09:49 +00:00

mshv_vtl_main.c

Convert 'alloc_obj' family to use the new default GFP_KERNEL argument

2026-02-21 17:09:51 -08:00

mshv_vtl.h

Drivers: hv: Introduce mshv_vtl driver

2025-12-05 23:16:26 +00:00

mshv.h

…

ring_buffer.c

Convert more 'alloc_obj' cases to default GFP_KERNEL arguments

2026-02-21 20:03:00 -08:00

vmbus_drv.c

Convert 'alloc_obj' family to use the new default GFP_KERNEL argument

2026-02-21 17:09:51 -08:00