Buildresult: powerpc-next/ppc40x_defconfig/powerpc-gcc9 built on Nov 30 2021, 23:41

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Status:	OK
Date/Time:	Nov 30 2021, 23:41
Duration:	0:01:22.724287
Builder:	blade4b
Revision:	powerpc/32s: Fix shift-out-of-bounds in KASAN init (`af11dee4361b3519981fa04d014873f9d9edd6ac)`
Target:	powerpc-next/ppc40x_defconfig/powerpc-gcc9
Branch:	powerpc-next
Compiler:	powerpc-gcc9 (powerpc64-linux-gcc (GCC) 9.2.0 / GNU ld (GNU Binutils) 2.32)
Config:	ppc40x_defconfig (download)
Log:	Download original Possible warnings (1) <stdin>:1559:2: warning: #warning syscall futex_waitv not implemented [-Wcpp] Full Log # git rev-parse -q --verify af11dee4361b3519981fa04d014873f9d9edd6ac^{commit} af11dee4361b3519981fa04d014873f9d9edd6ac already have revision, skipping fetch # git checkout -q -f -B kisskb af11dee4361b3519981fa04d014873f9d9edd6ac # git clean -qxdf # < git log -1 # commit af11dee4361b3519981fa04d014873f9d9edd6ac # Author: Christophe Leroy <christophe.leroy@csgroup.eu> # Date: Tue Nov 30 09:42:37 2021 +0100 # # powerpc/32s: Fix shift-out-of-bounds in KASAN init # # ================================================================================ # UBSAN: shift-out-of-bounds in arch/powerpc/mm/kasan/book3s_32.c:22:23 # shift exponent -1 is negative # CPU: 0 PID: 0 Comm: swapper Not tainted 5.15.5-gentoo-PowerMacG4 #9 # Call Trace: # [c214be60] [c0ba0048] dump_stack_lvl+0x80/0xb0 (unreliable) # [c214be80] [c0b99288] ubsan_epilogue+0x10/0x5c # [c214be90] [c0b98fe0] __ubsan_handle_shift_out_of_bounds+0x94/0x138 # [c214bf00] [c1c0f010] kasan_init_region+0xd8/0x26c # [c214bf30] [c1c0ed84] kasan_init+0xc0/0x198 # [c214bf70] [c1c08024] setup_arch+0x18/0x54c # [c214bfc0] [c1c037f0] start_kernel+0x90/0x33c # [c214bff0] [00003610] 0x3610 # ================================================================================ # # This happens when the directly mapped memory is a power of 2. # # Fix it by checking the shift and set the result to 0 when shift is -1 # # Fixes: 7974c4732642 ("powerpc/32s: Implement dedicated kasan_init_region()") # Reported-by: Erhard Furtner <erhard_f@mailbox.org> # Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu> # Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> # Link: https://bugzilla.kernel.org/show_bug.cgi?id=215169 # Link: https://lore.kernel.org/r/15cbc3439d4ad988b225e2119ec99502a5cc6ad3.1638261744.git.christophe.leroy@csgroup.eu # < /opt/cross/kisskb/korg/gcc-9.2.0-nolibc/powerpc64-linux/bin/powerpc64-linux-gcc --version # < /opt/cross/kisskb/korg/gcc-9.2.0-nolibc/powerpc64-linux/bin/powerpc64-linux-ld --version # < git log --format=%s --max-count=1 af11dee4361b3519981fa04d014873f9d9edd6ac # < make -s -j 24 ARCH=powerpc O=/kisskb/build/powerpc-next_ppc40x_defconfig_powerpc-gcc9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-9.2.0-nolibc/powerpc64-linux/bin/powerpc64-linux- ppc40x_defconfig # < make -s -j 24 ARCH=powerpc O=/kisskb/build/powerpc-next_ppc40x_defconfig_powerpc-gcc9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-9.2.0-nolibc/powerpc64-linux/bin/powerpc64-linux- help # make -s -j 24 ARCH=powerpc O=/kisskb/build/powerpc-next_ppc40x_defconfig_powerpc-gcc9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-9.2.0-nolibc/powerpc64-linux/bin/powerpc64-linux- olddefconfig # make -s -j 24 ARCH=powerpc O=/kisskb/build/powerpc-next_ppc40x_defconfig_powerpc-gcc9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-9.2.0-nolibc/powerpc64-linux/bin/powerpc64-linux- <stdin>:1559:2: warning: #warning syscall futex_waitv not implemented [-Wcpp] Completed OK # rm -rf /kisskb/build/powerpc-next_ppc40x_defconfig_powerpc-gcc9 # Build took: 0:01:22.724287

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