Yury Norov 29ddfd5460 lib/bitmap: drop optimization of bitmap_{from,to}_arr64 ... [ Upstream commit c1d2ba10f5 ] bitmap_{from,to}_arr64() optimization is overly optimistic on 32-bit LE architectures when it's wired to bitmap_copy_clear_tail(). bitmap_copy_clear_tail() takes care of unused bits in the bitmap up to the next word boundary. But on 32-bit machines when copying bits from bitmap to array of 64-bit words, it's expected that the unused part of a recipient array must be cleared up to 64-bit boundary, so the last 4 bytes may stay untouched when nbits % 64 <= 32. While the copying part of the optimization works correct, that clear-tail trick makes corresponding tests reasonably fail: test_bitmap: bitmap_to_arr64(nbits == 1): tail is not safely cleared: 0xa5a5a5a500000001 (must be 0x0000000000000001) Fix it by removing bitmap_{from,to}_arr64() optimization for 32-bit LE arches. Reported-by: Guenter Roeck <linux@roeck-us.net> Link: https://lore.kernel.org/lkml/20230225184702.GA3587246@roeck-us.net/ Fixes: 0a97953fd2 ("lib: add bitmap_{from,to}_arr64") Signed-off-by: Yury Norov <yury.norov@gmail.com> Tested-by: Guenter Roeck <linux@roeck-us.net> Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Reviewed-by: Alexander Lobakin <aleksander.lobakin@intel.com> Signed-off-by: Sasha Levin <sashal@kernel.org>		2023-07-19 16:21:58 +02:00
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acpi	ACPI: sleep: Avoid breaking S3 wakeup due to might_sleep()	2023-06-28 11:12:22 +02:00
asm-generic	…
clocksource	…
crypto	crypto: kpp - Add helper to set reqsize	2023-07-19 16:21:42 +02:00
drm	drm/bridge: Introduce pre_enable_prev_first to alter bridge init order	2023-07-19 16:21:23 +02:00
dt-bindings	…
keys	…
kunit	…
kvm	…
linux	lib/bitmap: drop optimization of bitmap_{from,to}_arr64	2023-07-19 16:21:58 +02:00
math-emu	…
media	media: dvb-core: Fix use-after-free due to race at dvb_register_device()	2023-06-09 10:34:12 +02:00
memory	…
misc	…
net	netlink: Add __sock_i_ino() for __netlink_diag_dump().	2023-07-19 16:21:13 +02:00
pcmcia	…
ras	…
rdma	RDMA/cma: Always set static rate to 0 for RoCE	2023-06-21 16:00:59 +02:00
rv	…
scsi	…
soc	…
sound	ASoC: Intel: avs: Account for UID of ACPI device	2023-06-21 16:00:53 +02:00
target	…
trace	tracing/timer: Add missing hrtimer modes to decode_hrtimer_mode().	2023-07-19 16:20:59 +02:00
uapi	media: videodev2.h: Fix struct v4l2_input tuner index comment	2023-07-19 16:21:50 +02:00
ufs	…
vdso	…
video	…
xen	…