# git rev-parse -q --verify 3644e2d2dda78e21edd8f5415b6d7ab03f5f54f3^{commit}
3644e2d2dda78e21edd8f5415b6d7ab03f5f54f3
already have revision, skipping fetch
# git checkout -q -f -B kisskb 3644e2d2dda78e21edd8f5415b6d7ab03f5f54f3
# git clean -qxdf
# < git log -1
# commit 3644e2d2dda78e21edd8f5415b6d7ab03f5f54f3
# Author: Kent Overstreet <kent.overstreet@gmail.com>
# Date:   Fri Dec 18 04:07:11 2020 -0500
# 
#     mm/filemap: fix infinite loop in generic_file_buffered_read()
#     
#     If iter->count is 0 and iocb->ki_pos is page aligned, this causes
#     nr_pages to be 0.
#     
#     Then in generic_file_buffered_read_get_pages() find_get_pages_contig()
#     returns 0 - because we asked for 0 pages, so we call
#     generic_file_buffered_read_no_cached_page() which attempts to add a page
#     to the page cache, which fails with -EEXIST, and then we loop. Oops...
#     
#     Signed-off-by: Kent Overstreet <kent.overstreet@gmail.com>
#     Reported-by: Jens Axboe <axboe@kernel.dk>
#     Reviewed-by: Jens Axboe <axboe@kernel.dk>
#     Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
# < /opt/cross/kisskb/br-aarch64-glibc-2016.08-613-ge98b4dd/bin/aarch64-linux-gcc --version
# < /opt/cross/kisskb/br-aarch64-glibc-2016.08-613-ge98b4dd/bin/aarch64-linux-ld --version
# < git log --format=%s --max-count=1 3644e2d2dda78e21edd8f5415b6d7ab03f5f54f3
# < make -s -j 80 ARCH=arm64 O=/kisskb/build/linus-rand_arm64-randconfig_arm64-gcc5.4 CROSS_COMPILE=/opt/cross/kisskb/br-aarch64-glibc-2016.08-613-ge98b4dd/bin/aarch64-linux-  randconfig
KCONFIG_SEED=0x7888E995
# Added to kconfig CONFIG_PREVENT_FIRMWARE_BUILD=y
# < make -s -j 80 ARCH=arm64 O=/kisskb/build/linus-rand_arm64-randconfig_arm64-gcc5.4 CROSS_COMPILE=/opt/cross/kisskb/br-aarch64-glibc-2016.08-613-ge98b4dd/bin/aarch64-linux-  help
# make -s -j 80 ARCH=arm64 O=/kisskb/build/linus-rand_arm64-randconfig_arm64-gcc5.4 CROSS_COMPILE=/opt/cross/kisskb/br-aarch64-glibc-2016.08-613-ge98b4dd/bin/aarch64-linux-  olddefconfig
.config:6219:warning: override: reassigning to symbol PREVENT_FIRMWARE_BUILD
# make -s -j 80 ARCH=arm64 O=/kisskb/build/linus-rand_arm64-randconfig_arm64-gcc5.4 CROSS_COMPILE=/opt/cross/kisskb/br-aarch64-glibc-2016.08-613-ge98b4dd/bin/aarch64-linux-  
arch/arm64/Makefile:25: ld does not support --fix-cortex-a53-843419; kernel may be susceptible to erratum
arch/arm64/Makefile:25: ld does not support --fix-cortex-a53-843419; kernel may be susceptible to erratum
In file included from /kisskb/src/drivers/dma/qcom/gpi.c:8:0:
In function 'field_multiplier',
    inlined from 'gpi_update_reg.isra.10' at /kisskb/src/include/linux/bitfield.h:124:17:
/kisskb/src/include/linux/bitfield.h:119:3: error: call to '__bad_mask' declared with attribute error: bad bitfield mask
   __bad_mask();
   ^
In function 'field_multiplier',
    inlined from 'gpi_update_reg.isra.10' at /kisskb/src/include/linux/bitfield.h:154:1:
/kisskb/src/include/linux/bitfield.h:119:3: error: call to '__bad_mask' declared with attribute error: bad bitfield mask
   __bad_mask();
   ^
make[4]: *** [/kisskb/src/scripts/Makefile.build:279: drivers/dma/qcom/gpi.o] Error 1
make[3]: *** [/kisskb/src/scripts/Makefile.build:496: drivers/dma/qcom] Error 2
make[3]: *** Waiting for unfinished jobs....
make[2]: *** [/kisskb/src/scripts/Makefile.build:496: drivers/dma] Error 2
make[2]: *** Waiting for unfinished jobs....
make[1]: *** [/kisskb/src/Makefile:1805: drivers] Error 2
make[1]: *** Waiting for unfinished jobs....
make: *** [Makefile:185: __sub-make] Error 2
Command 'make -s -j 80 ARCH=arm64 O=/kisskb/build/linus-rand_arm64-randconfig_arm64-gcc5.4 CROSS_COMPILE=/opt/cross/kisskb/br-aarch64-glibc-2016.08-613-ge98b4dd/bin/aarch64-linux-  ' returned non-zero exit status 2
# rm -rf /kisskb/build/linus-rand_arm64-randconfig_arm64-gcc5.4
# Build took: 0:02:07.341015