Arnd Bergmann a52a2817d2 objtool: add UACCESS exceptions for __tsan_volatile_read/write ... [ Upstream commit d5d4692472 ] A lot of the tsan helpers are already excempt from the UACCESS warnings, but some more functions were added that need the same thing: kernel/kcsan/core.o: warning: objtool: __tsan_volatile_read16+0x0: call to __tsan_unaligned_read16() with UACCESS enabled kernel/kcsan/core.o: warning: objtool: __tsan_volatile_write16+0x0: call to __tsan_unaligned_write16() with UACCESS enabled vmlinux.o: warning: objtool: __tsan_unaligned_volatile_read16+0x4: call to __tsan_unaligned_read16() with UACCESS enabled vmlinux.o: warning: objtool: __tsan_unaligned_volatile_write16+0x4: call to __tsan_unaligned_write16() with UACCESS enabled As Marco points out, these functions don't even call each other explicitly but instead gcc (but not clang) notices the functions being identical and turns one symbol into a direct branch to the other. Link: https://lkml.kernel.org/r/20230215130058.3836177-4-arnd@kernel.org Fixes: 75d75b7a4d ("kcsan: Support distinguishing volatile accesses") Signed-off-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Marco Elver <elver@google.com> Cc: Alexander Potapenko <glider@google.com> Cc: Andrey Konovalov <andreyknvl@gmail.com> Cc: Andrey Ryabinin <ryabinin.a.a@gmail.com> Cc: Dmitry Vyukov <dvyukov@google.com> Cc: Josh Poimboeuf <jpoimboe@kernel.org> Cc: Kuan-Ying Lee <Kuan-Ying.Lee@mediatek.com> Cc: Peter Zijlstra (Intel) <peterz@infradead.org> Cc: Vincenzo Frascino <vincenzo.frascino@arm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Sasha Levin <sashal@kernel.org>		2023-03-10 09:33:28 +01:00
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accounting
arch	parisc: Align parisc MADV_XXX constants with all other architectures	2023-01-14 10:33:40 +01:00
bootconfig
bpf	bpftool: profile online CPUs instead of possible	2023-03-10 09:32:58 +01:00
build
certs
cgroup
counter
debugging
edid
firewire
firmware
gpio	tools: gpio: fix -c option of gpio-event-mon	2023-02-01 08:34:49 +01:00
hv
iio
include	tools/nolibc: prevent gcc from making memset() loop over itself	2023-02-01 08:34:31 +01:00
io_uring
kvm/kvm_stat
laptop
leds
lib	tools/lib/thermal: Fix thermal_sampling_exit()	2023-03-10 09:33:05 +01:00
memory-model
objtool	objtool: add UACCESS exceptions for __tsan_volatile_read/write	2023-03-10 09:33:28 +01:00
pci
pcmcia
perf	perf tests stat_all_metrics: Change true workload to sleep workload for system wide check	2023-03-10 09:33:27 +01:00
power
rcu
scripts
spi
testing	selftests: use printf instead of echo -ne	2023-03-10 09:33:27 +01:00
thermal
time
tracing	tools/tracing/rtla: osnoise_hist: use total duration for average calculation	2023-03-10 09:33:26 +01:00
usb
verification
virtio	tools/virtio: fix the vringh test for virtio ring changes	2023-02-22 12:59:42 +01:00
vm
wmi
Makefile