Buildresult: powerpc-fixes/skiroot_defconfig/powerpc-gcc11 built on Mar 16 2023, 18:08

kisskb

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Status:	OK
Date/Time:	Mar 16 2023, 18:08
Duration:	0:01:15.568610
Builder:	alpine3
Revision:	powerpc/mm: Fix false detection of read faults (`f2c7e3562b4c4f1699acc1538ebf3e75f5cced35)`
Target:	powerpc-fixes/skiroot_defconfig/powerpc-gcc11
Branch:	powerpc-fixes
Compiler:	powerpc-gcc11 (powerpc64-linux-gcc (GCC) 11.1.0 / GNU ld (GNU Binutils) 2.36.1)
Config:	skiroot_defconfig (download)
Log:	Download original Possible warnings (2) fs/btrfs/volumes.c:2515:9: warning: 'seed_devices' may be used uninitialized in this function [-Wmaybe-uninitialized] fs/btrfs/send.c:1909:27: warning: 'right_gen' may be used uninitialized in this function [-Wmaybe-uninitialized] Full Log # git rev-parse -q --verify f2c7e3562b4c4f1699acc1538ebf3e75f5cced35^{commit} f2c7e3562b4c4f1699acc1538ebf3e75f5cced35 already have revision, skipping fetch # git checkout -q -f -B kisskb f2c7e3562b4c4f1699acc1538ebf3e75f5cced35 # git clean -qxdf # < git log -1 # commit f2c7e3562b4c4f1699acc1538ebf3e75f5cced35 # Author: Russell Currey <ruscur@russell.cc> # Date: Fri Mar 10 16:08:34 2023 +1100 # # powerpc/mm: Fix false detection of read faults # # To support detection of read faults with Radix execute-only memory, the # vma_is_accessible() check in access_error() (which checks for PROT_NONE) # was replaced with a check to see if VM_READ was missing, and if so, # returns true to assert the fault was caused by a bad read. # # This is incorrect, as it ignores that both VM_WRITE and VM_EXEC imply # read on powerpc, as defined in protection_map[]. This causes mappings # containing VM_WRITE or VM_EXEC without VM_READ to misreport the cause of # page faults, since the MMU is still allowing reads. # # Correct this by restoring the original vma_is_accessible() check for # PROT_NONE mappings, and adding a separate check for Radix PROT_EXEC-only # mappings. # # Fixes: 395cac7752b9 ("powerpc/mm: Support execute-only memory on the Radix MMU") # Reported-by: Michal Suchánek <msuchanek@suse.de> # Link: https://lore.kernel.org/r/20230308152702.GR19419@kitsune.suse.cz # Tested-by: Benjamin Gray <bgray@linux.ibm.com> # Signed-off-by: Russell Currey <ruscur@russell.cc> # Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> # Link: https://msgid.link/20230310050834.63105-1-ruscur@russell.cc # < /opt/cross/kisskb/korg/gcc-11.1.0-nolibc/powerpc64-linux/bin/powerpc64-linux-gcc --version # < /opt/cross/kisskb/korg/gcc-11.1.0-nolibc/powerpc64-linux/bin/powerpc64-linux-ld --version # < git log --format=%s --max-count=1 f2c7e3562b4c4f1699acc1538ebf3e75f5cced35 # < make -s -j 160 ARCH=powerpc O=/kisskb/build/powerpc-fixes_skiroot_defconfig_powerpc-gcc11 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-11.1.0-nolibc/powerpc64-linux/bin/powerpc64-linux- skiroot_defconfig # < make -s -j 160 ARCH=powerpc O=/kisskb/build/powerpc-fixes_skiroot_defconfig_powerpc-gcc11 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-11.1.0-nolibc/powerpc64-linux/bin/powerpc64-linux- help # make -s -j 160 ARCH=powerpc O=/kisskb/build/powerpc-fixes_skiroot_defconfig_powerpc-gcc11 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-11.1.0-nolibc/powerpc64-linux/bin/powerpc64-linux- olddefconfig # make -s -j 160 ARCH=powerpc O=/kisskb/build/powerpc-fixes_skiroot_defconfig_powerpc-gcc11 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-11.1.0-nolibc/powerpc64-linux/bin/powerpc64-linux- /kisskb/src/fs/btrfs/volumes.c: In function 'btrfs_init_new_device': /kisskb/src/fs/btrfs/volumes.c:2515:9: warning: 'seed_devices' may be used uninitialized in this function [-Wmaybe-uninitialized] 2515 \| list_add(&seed_devices->seed_list, &fs_devices->seed_list); \| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /kisskb/src/fs/btrfs/volumes.c:2612:34: note: 'seed_devices' was declared here 2612 \| struct btrfs_fs_devices *seed_devices; \| ^~~~~~~~~~~~ /kisskb/src/fs/btrfs/send.c: In function 'get_cur_inode_state': /kisskb/src/fs/btrfs/send.c:1909:27: warning: 'right_gen' may be used uninitialized in this function [-Wmaybe-uninitialized] 1909 \| } else if (right_gen == gen) { \| ^ Completed OK # rm -rf /kisskb/build/powerpc-fixes_skiroot_defconfig_powerpc-gcc11 # Build took: 0:01:15.568610

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