linux-stable/tools
Zenghui Yu 309505dd56 KVM: selftests: Fix mapping length truncation in m{,un}map()
max_mem_slots is now declared as uint32_t. The result of (0x200000 * 32767)
is unexpectedly truncated to be 0xffe00000, whilst we actually need to
allocate about, 63GB. Cast max_mem_slots to size_t in both mmap() and
munmap() to fix the length truncation.

We'll otherwise see the failure on arm64 thanks to the access_ok() checking
in __kvm_set_memory_region(), as the unmapped VA happen to go beyond the
task's allowed address space.

 # ./set_memory_region_test
Allowed number of memory slots: 32767
Adding slots 0..32766, each memory region with 2048K size
==== Test Assertion Failure ====
  set_memory_region_test.c:391: ret == 0
  pid=94861 tid=94861 errno=22 - Invalid argument
     1	0x00000000004015a7: test_add_max_memory_regions at set_memory_region_test.c:389
     2	 (inlined by) main at set_memory_region_test.c:426
     3	0x0000ffffb8e67bdf: ?? ??:0
     4	0x00000000004016db: _start at :?
  KVM_SET_USER_MEMORY_REGION IOCTL failed,
  rc: -1 errno: 22 slot: 2615

Fixes: 3bf0fcd754 ("KVM: selftests: Speed up set_memory_region_test")
Signed-off-by: Zenghui Yu <yuzenghui@huawei.com>
Message-Id: <20210624070931.565-1-yuzenghui@huawei.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2021-06-24 04:04:38 -04:00
..
accounting
arch tools headers cpufeatures: Sync with the kernel sources 2021-06-11 12:54:24 -03:00
bootconfig tools/bootconfig: Fix a build error accroding to undefined fallthrough 2021-06-08 16:44:00 -04:00
bpf bpftool: Add sock_release help info for cgroup attach/prog load command 2021-05-25 16:18:32 +02:00
build tools build: Fix quiet cmd indentation 2021-05-17 12:10:03 +09:00
cgroup tools/cgroup/slabinfo.py: updated to work on current kernel 2021-04-23 14:42:40 -07:00
debugging tools: Fix a typo in kernel-chktaint 2021-04-08 11:41:22 -06:00
edid
firewire
firmware
gpio tools: gpio-utils: fix various kernel-doc warnings 2021-03-26 14:56:19 +01:00
hv
iio iio: event_monitor: Enable events before monitoring 2021-03-25 19:13:52 +00:00
include tools headers UAPI: Sync linux/in.h copy with the kernel sources 2021-06-19 10:15:22 -03:00
io_uring
kvm/kvm_stat tools/kvm_stat: Fix documentation typo 2021-05-07 06:06:22 -04:00
laptop
leds
lib libbpf: Fixes incorrect rx_ring_setup_done 2021-06-07 17:44:03 -07:00
memory-model doc: update rcu_dereference.rst reference 2021-04-06 14:45:04 +02:00
objtool objtool: Only rewrite unconditional retpoline thunk calls 2021-06-11 08:53:06 +02:00
pci
pcmcia
perf perf beauty: Update copy of linux/socket.h with the kernel sources 2021-06-19 10:09:08 -03:00
power Merge branch 'turbostat' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux 2021-05-05 12:24:29 -07:00
scripts tools build: Fix quiet cmd indentation 2021-05-17 12:10:03 +09:00
spi spi: tools: make a symbolic link to the header file spi.h 2021-04-22 16:30:39 +01:00
testing KVM: selftests: Fix mapping length truncation in m{,un}map() 2021-06-24 04:04:38 -04:00
thermal/tmon tools: do not include scripts/Kbuild.include 2021-04-25 05:26:13 +09:00
time
tracing tools/latency-collector: Remove unneeded semicolon 2021-03-18 12:58:26 -04:00
usb treewide: remove editor modelines and cruft 2021-05-07 00:26:34 -07:00
virtio
vm
wmi
Makefile tracing/tools: Add the latency-collector to tools directory 2021-02-12 11:52:59 -05:00