Buildresult: linus/or1ksim_defconfig/or32-gcc9 built on Aug 10 2022, 13:51

kisskb

Revisions | Branches | Compilers | Configs | Build Results | Build Failures |

Status:	OK
Date/Time:	Aug 10 2022, 13:51
Duration:	0:00:45.965531
Builder:	blade46
Revision:	add barriers to buffer_uptodate and set_buffer_uptodate (`d4252071b97d2027d246f6a82cbee4d52f618b47)`
Target:	linus/or1ksim_defconfig/or32-gcc9
Branch:	linus
Compiler:	or32-gcc9 (or1k-linux-gcc (GCC) 9.4.0 / GNU ld (GNU Binutils) 2.36.1)
Config:	or1ksim_defconfig (download)
Log:	Download original No warnings found in log. Full Log # git rev-parse -q --verify d4252071b97d2027d246f6a82cbee4d52f618b47^{commit} d4252071b97d2027d246f6a82cbee4d52f618b47 already have revision, skipping fetch # git checkout -q -f -B kisskb d4252071b97d2027d246f6a82cbee4d52f618b47 # git clean -qxdf # < git log -1 # commit d4252071b97d2027d246f6a82cbee4d52f618b47 # Author: Mikulas Patocka <mpatocka@redhat.com> # Date: Tue Aug 9 14:32:13 2022 -0400 # # add barriers to buffer_uptodate and set_buffer_uptodate # # Let's have a look at this piece of code in __bread_slow: # # get_bh(bh); # bh->b_end_io = end_buffer_read_sync; # submit_bh(REQ_OP_READ, 0, bh); # wait_on_buffer(bh); # if (buffer_uptodate(bh)) # return bh; # # Neither wait_on_buffer nor buffer_uptodate contain any memory barrier. # Consequently, if someone calls sb_bread and then reads the buffer data, # the read of buffer data may be executed before wait_on_buffer(bh) on # architectures with weak memory ordering and it may return invalid data. # # Fix this bug by adding a memory barrier to set_buffer_uptodate and an # acquire barrier to buffer_uptodate (in a similar way as # folio_test_uptodate and folio_mark_uptodate). # # Signed-off-by: Mikulas Patocka <mpatocka@redhat.com> # Reviewed-by: Matthew Wilcox (Oracle) <willy@infradead.org> # Cc: stable@vger.kernel.org # Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> # < /opt/cross/kisskb/korg/gcc-9.4.0-nolibc/or1k-linux/bin/or1k-linux-gcc --version # < /opt/cross/kisskb/korg/gcc-9.4.0-nolibc/or1k-linux/bin/or1k-linux-ld --version # < git log --format=%s --max-count=1 d4252071b97d2027d246f6a82cbee4d52f618b47 # < make -s -j 32 ARCH=openrisc O=/kisskb/build/linus_or1ksim_defconfig_or32-gcc9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-9.4.0-nolibc/or1k-linux/bin/or1k-linux- or1ksim_defconfig # < make -s -j 32 ARCH=openrisc O=/kisskb/build/linus_or1ksim_defconfig_or32-gcc9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-9.4.0-nolibc/or1k-linux/bin/or1k-linux- help # make -s -j 32 ARCH=openrisc O=/kisskb/build/linus_or1ksim_defconfig_or32-gcc9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-9.4.0-nolibc/or1k-linux/bin/or1k-linux- olddefconfig # make -s -j 32 ARCH=openrisc O=/kisskb/build/linus_or1ksim_defconfig_or32-gcc9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-9.4.0-nolibc/or1k-linux/bin/or1k-linux- Completed OK # rm -rf /kisskb/build/linus_or1ksim_defconfig_or32-gcc9 # Build took: 0:00:45.965531

© Michael Ellerman 2006-2018.