On Mon, 25 Nov 2024 at 21:53, Nathan Chancellor <nathan@xxxxxxxxxx> wrote: > > Hi Naresh, > > + Kees and linux-hardening, since this is a hardening configuration. > > On Mon, Nov 25, 2024 at 07:34:22PM +0530, Naresh Kamboju wrote: > > The arm TI x15 board boot has failed with the Linux next, mainline > > and the Linux stable. Please find boot log and build links. > > > > The boot failed with clang tool chain and PASS with gcc-13. > > > > Device: TI x15 device > > Boot pass: gcc-13 > > Are the UBSAN options getting enabled with GCC as well? I am somewhat > surprised that they are not agreeing here, unless this is a __counted_by > related issue? Does this not happen with GCC 14 as well? It would be > nice if we could get a copy of GCC 15 with __counted_by into TuxMake for > validation of __counted_by between the two compilers easily. I did not > see any obvious instances of __counted_by in edma_probe() but > admittedly, I did not look too hard. > > > Boot failed: clang-19 > > Configs: korg-clang-19-lkftconfig-hardening > > Boot pass: qemu-armv7 (Additional info) > > > > This is always reproducible. > > > > x15 beagleboard: > > boot: > > * clang-nightly-lkftconfig-hardening > > * korg-clang-19-lkftconfig-hardening > > > > Reported-by: Linux Kernel Functional Testing <lkft@xxxxxxxxxx> > > > > Log details: > > ------------ > > [ 0.000000] Booting Linux on physical CPU 0x0 > > [ 0.000000] Linux version 6.12.0 (tuxmake@tuxmake) (ClangBuiltLinux > > clang version 19.1.4 (https://github.com/llvm/llvm-project.git > > aadaa00de76ed0c4987b97450dd638f63a385bed), ClangBuiltLinux LLD 19.1.4 > > (https://github.com/llvm/llvm-project.git > > aadaa00de76ed0c4987b97450dd638f63a385bed)) #1 SMP @1732428891 > > [ 0.000000] CPU: ARMv7 Processor [412fc0f2] revision 2 (ARMv7), cr=30c5387d > > <> > > [ 3.543395] pcieport 0000:00:00.0: PME: Signaling with IRQ 136 > > [ 3.556976] Internal error: Oops - undefined instruction: 0 [#1] SMP ARM > > Can you turn off UBSAN_TRAP and see if that gives us any indication as > to where exactly UBSAN_BOUNDS is triggering here? It is not entirely > clear because we do not seem to have a line number in edma.c from > decoding the stacktrace. Anders made a new build with UBSAN_TRAP turn off and the boot pass CONFIG_UBSAN_TRAP=n on arm TI x15 device. Link Log: -------- - https://lkft.validation.linaro.org/scheduler/job/8008096#L1846 - https://storage.tuxsuite.com/public/linaro/anders/builds/2pR6MSNK0MqztHMe45eAqWYlIaf/ - Naresh
