# git rev-parse -q --verify 5076190daded2197f62fe92cf69674488be44175^{commit} 5076190daded2197f62fe92cf69674488be44175 already have revision, skipping fetch # git checkout -q -f -B kisskb 5076190daded2197f62fe92cf69674488be44175 # git clean -qxdf # < git log -1 # commit 5076190daded2197f62fe92cf69674488be44175 # Author: Linus Torvalds # Date: Tue Mar 17 11:04:09 2020 -0700 # # mm: slub: be more careful about the double cmpxchg of freelist # # This is just a cleanup addition to Jann's fix to properly update the # transaction ID for the slub slowpath in commit fd4d9c7d0c71 ("mm: slub: # add missing TID bump.."). # # The transaction ID is what protects us against any concurrent accesses, # but we should really also make sure to make the 'freelist' comparison # itself always use the same freelist value that we then used as the new # next free pointer. # # Jann points out that if we do all of this carefully, we could skip the # transaction ID update for all the paths that only remove entries from # the lists, and only update the TID when adding entries (to avoid the ABA # issue with cmpxchg and list handling re-adding a previously seen value). # # But this patch just does the "make sure to cmpxchg the same value we # used" rather than then try to be clever. # # Acked-by: Jann Horn # Signed-off-by: Linus Torvalds # < /opt/cross/kisskb/gcc-4.6.3-nolibc/powerpc-linux/bin/powerpc-linux-gcc --version # < /opt/cross/kisskb/gcc-4.6.3-nolibc/powerpc-linux/bin/powerpc-linux-ld --version # < git log --format=%s --max-count=1 5076190daded2197f62fe92cf69674488be44175 # < make -s -j 48 ARCH=powerpc O=/kisskb/build/linus_mpc85xx_defconfig_powerpc-gcc4.6 CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/powerpc-linux/bin/powerpc-linux- mpc85xx_defconfig # < make -s -j 48 ARCH=powerpc O=/kisskb/build/linus_mpc85xx_defconfig_powerpc-gcc4.6 CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/powerpc-linux/bin/powerpc-linux- help # make -s -j 48 ARCH=powerpc O=/kisskb/build/linus_mpc85xx_defconfig_powerpc-gcc4.6 CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/powerpc-linux/bin/powerpc-linux- olddefconfig # make -s -j 48 ARCH=powerpc O=/kisskb/build/linus_mpc85xx_defconfig_powerpc-gcc4.6 CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/powerpc-linux/bin/powerpc-linux- /kisskb/src/kernel/printk/printk.c: In function 'devkmsg_sysctl_set_loglvl': /kisskb/src/kernel/printk/printk.c:204:16: warning: 'old' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/drivers/tty/serial/8250/8250_core.c: In function 'univ8250_release_irq': /kisskb/src/drivers/tty/serial/8250/8250_core.c:247:18: warning: 'i' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/drivers/tty/serial/8250/8250_core.c:227:19: note: 'i' was declared here /kisskb/src/kernel/trace/trace_events.c: In function 'event_create_dir': /kisskb/src/kernel/trace/trace_events.c:2040:6: warning: 'ret' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/fs/proc/inode.c: In function 'proc_reg_open': /kisskb/src/include/linux/list.h:72:12: warning: 'pdeo' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/fs/proc/inode.c:338:21: note: 'pdeo' was declared here /kisskb/src/sound/soc/codecs/wm8960.c: In function 'wm8960_configure_clocking': /kisskb/src/sound/soc/codecs/wm8960.c:800:70: warning: 'j' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/sound/soc/codecs/wm8960.c:797:68: warning: 'i' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/fs/ext4/extents.c: In function 'ext4_convert_unwritten_io_end_vec': /kisskb/src/fs/ext4/extents.c:5009:23: warning: 'ret' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/drivers/base/regmap/regmap.c: In function 'regmap_raw_read': /kisskb/src/drivers/base/regmap/regmap.c:2598:6: warning: 'ret' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/drivers/base/regmap/regmap.c: In function '_regmap_raw_write': /kisskb/src/drivers/base/regmap/regmap.c:1859:6: warning: 'ret' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/drivers/net/ethernet/freescale/fs_enet/mac-scc.c: In function 'allocate_bd': /kisskb/src/drivers/net/ethernet/freescale/fs_enet/mac-scc.c:139:6: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast] /kisskb/src/drivers/usb/core/devio.c: In function 'async_completed': /kisskb/src/drivers/usb/core/devio.c:625:23: warning: 'errno' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/mm/hugetlb.c: In function 'alloc_pool_huge_page': /kisskb/src/mm/hugetlb.c:1426:5: warning: 'page' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/fs/udf/unicode.c: In function 'udf_name_conv_char': /kisskb/src/fs/udf/unicode.c:132:8: warning: 'c' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/fs/io_uring.c: In function '__io_sqe_files_update': /kisskb/src/fs/io_uring.c:5842:13: warning: 'err' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/arch/powerpc/boot/dts/fsl/mpc8541cds.dts:330.3-21: Warning (pci_device_bus_num): /pci@e0008000/i8259@19000:bus-range: PCI bus number 1 out of range, expected (0 - 0) /kisskb/src/arch/powerpc/boot/dts/fsl/mpc8555cds.dts:330.3-21: Warning (pci_device_bus_num): /pci@e0008000/i8259@19000:bus-range: PCI bus number 1 out of range, expected (0 - 0) INFO: Uncompressed kernel (size 0xc906e8) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xd00000) INFO: Uncompressed kernel (size 0xc906e8) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xd00000) INFO: Uncompressed kernel (size 0xc906e8) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xd00000) INFO: Uncompressed kernel (size 0xc906e8) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xd00000) INFO: Uncompressed kernel (size 0xc906e8) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xd00000) INFO: Uncompressed kernel (size 0xc906e8) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xd00000) INFO: Uncompressed kernel (size 0xc906e8) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xd00000) INFO: Uncompressed kernel (size 0xc906e8) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xd00000) INFO: Uncompressed kernel (size 0xc906e8) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xd00000) INFO: Uncompressed kernel (size 0xc906e8) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xd00000) INFO: Uncompressed kernel (size 0xc906e8) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xd00000) INFO: Uncompressed kernel (size 0xc906e8) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xd00000) INFO: Uncompressed kernel (size 0xc906e8) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xd00000) INFO: Uncompressed kernel (size 0xc906e8) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xd00000) INFO: Uncompressed kernel (size 0xc906e8) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xd00000) INFO: Uncompressed kernel (size 0xc7ff50) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xd00000) Image Name: Linux-5.6.0-rc6-00932-g5076190da Created: Thu Mar 19 04:20:04 2020 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 6029114 Bytes = 5887.81 KiB = 5.75 MiB Load Address: 00000000 Entry Point: 00000000 Image Name: Linux-5.6.0-rc6-00932-g5076190da Created: Thu Mar 19 04:20:06 2020 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 6060978 Bytes = 5918.92 KiB = 5.78 MiB Load Address: 00d00000 Entry Point: 00d002a8 Image Name: Linux-5.6.0-rc6-00932-g5076190da Created: Thu Mar 19 04:20:07 2020 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 6062171 Bytes = 5920.09 KiB = 5.78 MiB Load Address: 00d00000 Entry Point: 00d002e8 Image Name: Linux-5.6.0-rc6-00932-g5076190da Created: Thu Mar 19 04:20:07 2020 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 6062070 Bytes = 5919.99 KiB = 5.78 MiB Load Address: 00d00000 Entry Point: 00d002e8 Image Name: Linux-5.6.0-rc6-00932-g5076190da Created: Thu Mar 19 04:20:07 2020 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 6062169 Bytes = 5920.09 KiB = 5.78 MiB Load Address: 00d00000 Entry Point: 00d002e8 Image Name: Linux-5.6.0-rc6-00932-g5076190da Created: Thu Mar 19 04:20:07 2020 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 6062173 Bytes = 5920.09 KiB = 5.78 MiB Load Address: 00d00000 Entry Point: 00d002e8 Image Name: Linux-5.6.0-rc6-00932-g5076190da Created: Thu Mar 19 04:20:07 2020 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 6063816 Bytes = 5921.70 KiB = 5.78 MiB Load Address: 00d00000 Entry Point: 00d002a8 Image Name: Linux-5.6.0-rc6-00932-g5076190da Created: Thu Mar 19 04:20:07 2020 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 6062164 Bytes = 5920.08 KiB = 5.78 MiB Load Address: 00d00000 Entry Point: 00d002a8 Image Name: Linux-5.6.0-rc6-00932-g5076190da Created: Thu Mar 19 04:20:07 2020 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 6062397 Bytes = 5920.31 KiB = 5.78 MiB Load Address: 00d00000 Entry Point: 00d002a8 Image Name: Linux-5.6.0-rc6-00932-g5076190da Created: Thu Mar 19 04:20:08 2020 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 6062072 Bytes = 5919.99 KiB = 5.78 MiB Load Address: 00d00000 Entry Point: 00d002a8 Image Name: Linux-5.6.0-rc6-00932-g5076190da Created: Thu Mar 19 04:20:08 2020 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 6062399 Bytes = 5920.31 KiB = 5.78 MiB Load Address: 00d00000 Entry Point: 00d002a8 Image Name: Linux-5.6.0-rc6-00932-g5076190da Created: Thu Mar 19 04:20:08 2020 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 6060877 Bytes = 5918.83 KiB = 5.78 MiB Load Address: 00d00000 Entry Point: 00d002a8 Image Name: Linux-5.6.0-rc6-00932-g5076190da Created: Thu Mar 19 04:20:08 2020 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 6062903 Bytes = 5920.80 KiB = 5.78 MiB Load Address: 00d00000 Entry Point: 00d002a8 Image Name: Linux-5.6.0-rc6-00932-g5076190da Created: Thu Mar 19 04:20:08 2020 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 6061166 Bytes = 5919.11 KiB = 5.78 MiB Load Address: 00d00000 Entry Point: 00d002a8 Image Name: Linux-5.6.0-rc6-00932-g5076190da Created: Thu Mar 19 04:20:08 2020 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 6062445 Bytes = 5920.36 KiB = 5.78 MiB Load Address: 00d00000 Entry Point: 00d002e8 Image Name: Linux-5.6.0-rc6-00932-g5076190da Created: Thu Mar 19 04:20:08 2020 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 6063817 Bytes = 5921.70 KiB = 5.78 MiB Load Address: 00d00000 Entry Point: 00d002a8 Completed OK # rm -rf /kisskb/build/linus_mpc85xx_defconfig_powerpc-gcc4.6 # Build took: 0:01:48.169020