Peter Zijlstra 9a50dcaf04 ubsan, x86: Annotate and allow __ubsan_handle_shift_out_of_bounds() in uaccess regions ... The new check_zeroed_user() function uses variable shifts inside of a user_access_begin()/user_access_end() section and that results in GCC emitting __ubsan_handle_shift_out_of_bounds() calls, even though through value range analysis it would be able to see that the UB in question is impossible. Annotate and whitelist this UBSAN function; continued use of user_access_begin()/user_access_end() will undoubtedly result in further uses of function. Reported-by: Randy Dunlap <rdunlap@infradead.org> Tested-by: Randy Dunlap <rdunlap@infradead.org> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Acked-by: Randy Dunlap <rdunlap@infradead.org> Acked-by: Christian Brauner <christian.brauner@ubuntu.com> Cc: Josh Poimboeuf <jpoimboe@redhat.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephen Rothwell <sfr@canb.auug.org.au> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: cyphar@cyphar.com Cc: keescook@chromium.org Cc: linux@rasmusvillemoes.dk Fixes: f5a1a536fa ("lib: introduce copy_struct_from_user() helper") Link: https://lkml.kernel.org/r/20191021131149.GA19358@hirez.programming.kicks-ass.net Signed-off-by: Ingo Molnar <mingo@kernel.org>		2019-10-28 10:43:00 +01:00
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accounting
arch	tools arch x86: Sync asm/cpufeatures.h with the kernel sources	2019-09-20 15:00:49 -03:00
bpf	Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next	2019-09-06 16:49:17 +02:00
build
cgroup	iocost_monitor: Report debt	2019-09-10 12:31:39 -06:00
debugging
firewire
firmware
gpio
hv	- First round of vmbus hibernation support from Dexuan Cui.	2019-09-24 12:36:31 -07:00
iio	tools: iio: add .gitignore	2019-08-18 20:45:57 +01:00
include	Merge branch 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2019-09-26 15:38:07 -07:00
io_uring
kvm/kvm_stat
laptop
leds
lib	Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net	2019-09-28 17:47:33 -07:00
memory-model
nfsd
objtool	ubsan, x86: Annotate and allow __ubsan_handle_shift_out_of_bounds() in uaccess regions	2019-10-28 10:43:00 +01:00
pci
pcmcia
perf	perf unwind: Fix libunwind build failure on i386 systems	2019-09-26 21:59:38 +02:00
power	platform-drivers-x86 for v5.4-2	2019-09-24 12:39:40 -07:00
scripts
spi
testing	A few more tracing fixes:	2019-09-30 09:29:53 -07:00
thermal/tmon
time
usb
virtio
vm
wmi
Makefile