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 c7p10Z27 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 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: hi, Uros Bizjak, On Mon, Mar 25, 2024 at 11:31:40AM +0100, Uros Bizjak wrote: > On Mon, Mar 25, 2024 at 9:50 AM kernel test robot wrote: > > > > > > hi, Uros Bizjak, > > > > we reported an early crash issue for this commit last Oct. > > https://lore.kernel.org/all/202310071301.a5113890-oliver.sang@intel.com/ > > > > as you mentioned at that time > > "It is KASAN that is not compatible with named address spaces [1]." > > > > now we noticed the commit is merged into mainline, and we observed a different > > issue related with kcsan_setup_watchpoint. below detail report FYI. > > > > [1] https://lore.kernel.org/lkml/CAHk-=wi6U-O1wdPOESuCE6QO2OaPu0hEzaig0uDOU4L5CREhug@mail.gmail.com/ > > > > Yes, it is the same issue, but with KCSAN. > > > Hello, > > > > kernel test robot noticed "BUG:unable_to_handle_page_fault_for_address" on: > > > > commit: ca4256348660cb2162668ec3d13d1f921d05374a ("x86/percpu: Use C for percpu read/write accessors") > > https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git master > > > > [test failed on linus/master b3603fcb79b1036acae10602bffc4855a4b9af80] > > [test failed on linux-next/master 226d3c72fcde130a99d760895ebdd20e78e02cb5] > > > > in testcase: boot > > > > compiler: gcc-12 > > test machine: qemu-system-x86_64 -enable-kvm -cpu SandyBridge -smp 2 -m 16G > > We already have the candidate fix for GCC [1], the fix will be in gcc-13.3+. > > [1] https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111736 > > Please find attached an emergency patch for mainline that disables > named address spaces when KCSAN is enabled. I'll post a formal patch > submission in a moment. The named AS will be re-enabled with KCSAN > with a patch via -tip tree. thanks a lot for information! we will apply this patch. > > Thanks, > Uros. > diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig > index 39886bab943a..4fff6ed46e90 100644 > --- a/arch/x86/Kconfig > +++ b/arch/x86/Kconfig > @@ -2439,6 +2439,8 @@ config USE_X86_SEG_SUPPORT > # with named address spaces - see GCC PR sanitizer/111736. > # > depends on !KASAN > + # -fsanitize=thread (KCSAN) is also incompatible. > + depends on !KCSAN > > config CC_HAS_SLS > def_bool $(cc-option,-mharden-sls=all)