Buildresult: powerpc-fixes/40x/obs600_defconfig/powerpc-gcc4.9 built on Jun 29 2020, 23:57

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Status:	OK
Date/Time:	Jun 29 2020, 23:57
Duration:	0:00:50.379005
Builder:	ka1
Revision:	powerpc/mm/pkeys: Make pkey access check work on execute_only_key (`19ab500edb5d6020010caba48ce3b4ce4182ab63)`
Target:	powerpc-fixes/40x/obs600_defconfig/powerpc-gcc4.9
Branch:	powerpc-fixes
Compiler:	powerpc-gcc4.9 (powerpc64-linux-gcc (GCC) 4.9.4 / GNU ld (GNU Binutils) 2.29.1.20170915)
Config:	40x/obs600_defconfig (download)
Log:	Download original Possible warnings (2) arch/powerpc/kernel/head_40x.S:623: Warning: invalid register expression block/genhd.c:1623:1: warning: the frame size of 1160 bytes is larger than 1024 bytes [-Wframe-larger-than=] Full Log # git rev-parse -q --verify 19ab500edb5d6020010caba48ce3b4ce4182ab63^{commit} 19ab500edb5d6020010caba48ce3b4ce4182ab63 already have revision, skipping fetch # git checkout -q -f -B kisskb 19ab500edb5d6020010caba48ce3b4ce4182ab63 # git clean -qxdf # < git log -1 # commit 19ab500edb5d6020010caba48ce3b4ce4182ab63 # Author: Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com> # Date: Sat Jun 27 12:31:46 2020 +0530 # # powerpc/mm/pkeys: Make pkey access check work on execute_only_key # # Jan reported that LTP mmap03 was getting stuck in a page fault loop # after commit c46241a370a6 ("powerpc/pkeys: Check vma before returning # key fault error to the user"), as well as a minimised reproducer: # # #include <fcntl.h> # #include <stdio.h> # #include <stdlib.h> # #include <unistd.h> # #include <sys/mman.h> # # int main(int ac, char *av) # { # int page_sz = getpagesize(); # int fildes; # char addr; # # fildes = open("tempfile", O_WRONLY \| O_CREAT, 0666); # write(fildes, &fildes, sizeof(fildes)); # close(fildes); # # fildes = open("tempfile", O_RDONLY); # unlink("tempfile"); # # addr = mmap(0, page_sz, PROT_EXEC, MAP_FILE \| MAP_PRIVATE, fildes, 0); # # printf("%d\n", *addr); # return 0; # } # # And noticed that access_pkey_error() in page fault handler now always # seem to return false: # # __do_page_fault # access_pkey_error(is_pkey: 1, is_exec: 0, is_write: 0) # arch_vma_access_permitted # pkey_access_permitted # if (!is_pkey_enabled(pkey)) # return true # return false # # pkey_access_permitted() should not check if the pkey is available in # UAMOR (using is_pkey_enabled()). The kernel needs to do that check # only when allocating keys. This also makes sure the execute_only_key # which is marked as non-manageable via UAMOR is handled correctly in # pkey_access_permitted(), and fixes the bug. # # Fixes: c46241a370a6 ("powerpc/pkeys: Check vma before returning key fault error to the user") # Reported-by: Jan Stancek <jstancek@redhat.com> # Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com> # [mpe: Include bug report details etc. in the change log] # Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> # Link: https://lore.kernel.org/r/20200627070147.297535-1-aneesh.kumar@linux.ibm.com # < /opt/cross/kisskb/korg/gcc-4.9.4-nolibc/powerpc64-linux/bin/powerpc64-linux-gcc --version # < /opt/cross/kisskb/korg/gcc-4.9.4-nolibc/powerpc64-linux/bin/powerpc64-linux-ld --version # < git log --format=%s --max-count=1 19ab500edb5d6020010caba48ce3b4ce4182ab63 # < make -s -j 48 ARCH=powerpc O=/kisskb/build/powerpc-fixes_40x_obs600_defconfig_powerpc-gcc4.9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-4.9.4-nolibc/powerpc64-linux/bin/powerpc64-linux- 40x/obs600_defconfig # < make -s -j 48 ARCH=powerpc O=/kisskb/build/powerpc-fixes_40x_obs600_defconfig_powerpc-gcc4.9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-4.9.4-nolibc/powerpc64-linux/bin/powerpc64-linux- help # make -s -j 48 ARCH=powerpc O=/kisskb/build/powerpc-fixes_40x_obs600_defconfig_powerpc-gcc4.9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-4.9.4-nolibc/powerpc64-linux/bin/powerpc64-linux- olddefconfig # make -s -j 48 ARCH=powerpc O=/kisskb/build/powerpc-fixes_40x_obs600_defconfig_powerpc-gcc4.9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-4.9.4-nolibc/powerpc64-linux/bin/powerpc64-linux- /kisskb/src/arch/powerpc/kernel/head_40x.S: Assembler messages: /kisskb/src/arch/powerpc/kernel/head_40x.S:623: Warning: invalid register expression /kisskb/src/block/genhd.c: In function 'diskstats_show': /kisskb/src/block/genhd.c:1623:1: warning: the frame size of 1160 bytes is larger than 1024 bytes [-Wframe-larger-than=] } ^ INFO: Uncompressed kernel (size 0x51e664) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0x600000) Image Name: Linux-5.8.0-rc2-g19ab500edb5d Created: Mon Jun 29 23:58:24 2020 Image Type: PowerPC Linux Multi-File Image (gzip compressed) Data Size: 2635794 Bytes = 2574.02 KiB = 2.51 MiB Load Address: 00000000 Entry Point: 00000000 Contents: Image 0: 2628906 Bytes = 2567.29 KiB = 2.51 MiB Image 1: 2 Bytes = 0.00 KiB = 0.00 MiB Image 2: 6866 Bytes = 6.71 KiB = 0.01 MiB Completed OK # rm -rf /kisskb/build/powerpc-fixes_40x_obs600_defconfig_powerpc-gcc4.9 # Build took: 0:00:50.379005

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