[Bug 2133756] Re: dm-writeboost-dkms FTBS in Noble with the linux-6.17-hwe kernel
Massimiliano Pellizzer
2133756 at bugs.launchpad.net
Thu Dec 11 10:01:16 UTC 2025
Uploaded after changing the order of the patches in debian/patches/series.
Patches should be listed from least to most recent.
** Changed in: dm-writeboost (Ubuntu Noble)
Status: New => In Progress
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https://bugs.launchpad.net/bugs/2133756
Title:
dm-writeboost-dkms FTBS in Noble with the linux-6.17-hwe kernel
Status in dm-writeboost package in Ubuntu:
Invalid
Status in dm-writeboost source package in Noble:
In Progress
Status in dm-writeboost source package in Questing:
Invalid
Status in dm-writeboost source package in Resolute:
Invalid
Bug description:
[ Impact ]
DKMS make.log for dm-writeboost-2.2.16 for kernel 6.17.0-7-generic (x86_64)
Tue Dec 2 22:37:39 UTC 2025
make -C /lib/modules/6.17.0-7-generic/build M=/var/lib/dkms/dm-writeboost/2.2.16/build modules
make[1]: Entering directory '/usr/src/linux-headers-6.17.0-7-generic'
make -C /var/lib/dkms/dm-writeboost/2.2.16/build \
-f /usr/src/linux-headers-6.17.0-7-generic/Makefile modules
make[2]: Entering directory '/var/lib/dkms/dm-writeboost/2.2.16/build'
make --no-print-directory -C /var/lib/dkms/dm-writeboost/2.2.16/build \
-f /usr/src/linux-headers-6.17.0-7-generic/Makefile modules
warning: the compiler differs from the one used to build the kernel
The kernel was built by: x86_64-linux-gnu-gcc-13 (Ubuntu 13.3.0-6ubuntu2~24.04) 13.3.0
You are using: gcc-13 (Ubuntu 13.3.0-6ubuntu2~24.04) 13.3.0
make -f /usr/src/linux-headers-6.17.0-7-generic/scripts/Makefile.build obj=. need-builtin=1 need-modorder=1
# cmd_mod dm-writeboost.mod
printf '%s
' dm-writeboost-target.o dm-writeboost-metadata.o dm-writeboost-daemon.o | awk '!x[$0]++ { print("./"$0) }' > dm-writeboost.mod
# CC [M] dm-writeboost-target.o
gcc-13 -Wp,-MMD,./.dm-writeboost-target.o.d -nostdinc -I/usr/src/linux-headers-6.17.0-7-generic/arch/x86/include -I/usr/src/linux-headers-6.17.0-7-generic/arch/x86/include/generated -I/usr/src/linux-headers-6.17.0-7-generic/include -I/usr/src/linux-headers-6.17.0-7-generic/include -I/usr/src/linux-headers-6.17.0-7-generic/arch/x86/include/uapi -I/usr/src/linux-headers-6.17.0-7-generic/arch/x86/include/generated/uapi -I/usr/src/linux-headers-6.17.0-7-generic/include/uapi -I/usr/src/linux-headers-6.17.0-7-generic/include/generated/uapi -include /usr/src/linux-headers-6.17.0-7-generic/include/linux/compiler-version.h -include /usr/src/linux-headers-6.17.0-7-generic/include/linux/kconfig.h -I/usr/src/linux-headers-6.17.0-7-generic/ubuntu/include -include /usr/src/linux-headers-6.17.0-7-generic/include/linux/compiler_types.h -D__KERNEL__ -std=gnu11 -fshort-wchar -funsigned-char -fno-common -fno-PIE -fno-strict-aliasing -mno-sse -mno-mmx -mno-sse2 -mno-3dnow -mno-avx -fcf-protection=none -m64 -falign-jumps=1 -falign-loops=1 -mno-80387 -mno-fp-ret-in-387 -mpreferred-stack-boundary=3 -mskip-rax-setup -march=x86-64 -mtune=generic -mno-red-zone -mcmodel=kernel -mstack-protector-guard-reg=gs -mstack-protector-guard-symbol=__ref_stack_chk_guard -Wno-sign-compare -fno-asynchronous-unwind-tables -mindirect-branch=thunk-extern -mindirect-branch-register -mindirect-branch-cs-prefix -mfunction-return=thunk-extern -fno-jump-tables -mharden-sls=all -fpatchable-function-entry=16,16 -fno-delete-null-pointer-checks -O2 -fno-allow-store-data-races -fstack-protector-strong -fno-omit-frame-pointer -fno-optimize-sibling-calls -ftrivial-auto-var-init=zero -fno-stack-clash-protection -fzero-call-used-regs=used-gpr -pg -mrecord-mcount -mfentry -DCC_USING_FENTRY -falign-functions=16 -fstrict-flex-arrays=3 -fno-strict-overflow -fno-stack-check -fconserve-stack -fno-builtin-wcslen -Wall -Wextra -Wundef -Werror=implicit-function-declaration -Werror=implicit-int -Werror=return-type -Werror=strict-prototypes -Wno-format-security -Wno-trigraphs -Wno-frame-address -Wno-address-of-packed-member -Wmissing-declarations -Wmissing-prototypes -Wframe-larger-than=1024 -Wno-main -Wno-dangling-pointer -Wvla-larger-than=1 -Wno-pointer-sign -Wcast-function-type -Wno-array-bounds -Wno-stringop-overflow -Wno-alloc-size-larger-than -Wimplicit-fallthrough=5 -Werror=date-time -Werror=incompatible-pointer-types -Werror=designated-init -Wenum-conversion -Wunused -Wno-unused-but-set-variable -Wno-unused-const-variable -Wno-packed-not-aligned -Wno-format-overflow -Wno-format-truncation -Wno-stringop-truncation -Wno-override-init -Wno-missing-field-initializers -Wno-type-limits -Wno-shift-negative-value -Wno-maybe-uninitialized -Wno-sign-compare -Wno-unused-parameter -g -gdwarf-5 -fsanitize=bounds-strict -fsanitize=shift -fsanitize=bool -fsanitize=enum -DMODULE -DKBUILD_BASENAME='"dm_writeboost_target"' -DKBUILD_MODNAME='"dm_writeboost"' -D__KBUILD_MODNAME=kmod_dm_writeboost -c -o dm-writeboost-target.o dm-writeboost-target.c ; /usr/src/linux-headers-6.17.0-7-generic/tools/objtool/objtool --hacks=jump_label --hacks=noinstr --hacks=skylake --retpoline --rethunk --sls --stackval --static-call --uaccess --prefix=16 --Werror --module dm-writeboost-target.o
# CC [M] dm-writeboost-metadata.o
gcc-13 -Wp,-MMD,./.dm-writeboost-metadata.o.d -nostdinc -I/usr/src/linux-headers-6.17.0-7-generic/arch/x86/include -I/usr/src/linux-headers-6.17.0-7-generic/arch/x86/include/generated -I/usr/src/linux-headers-6.17.0-7-generic/include -I/usr/src/linux-headers-6.17.0-7-generic/include -I/usr/src/linux-headers-6.17.0-7-generic/arch/x86/include/uapi -I/usr/src/linux-headers-6.17.0-7-generic/arch/x86/include/generated/uapi -I/usr/src/linux-headers-6.17.0-7-generic/include/uapi -I/usr/src/linux-headers-6.17.0-7-generic/include/generated/uapi -include /usr/src/linux-headers-6.17.0-7-generic/include/linux/compiler-version.h -include /usr/src/linux-headers-6.17.0-7-generic/include/linux/kconfig.h -I/usr/src/linux-headers-6.17.0-7-generic/ubuntu/include -include /usr/src/linux-headers-6.17.0-7-generic/include/linux/compiler_types.h -D__KERNEL__ -std=gnu11 -fshort-wchar -funsigned-char -fno-common -fno-PIE -fno-strict-aliasing -mno-sse -mno-mmx -mno-sse2 -mno-3dnow -mno-avx -fcf-protection=none -m64 -falign-jumps=1 -falign-loops=1 -mno-80387 -mno-fp-ret-in-387 -mpreferred-stack-boundary=3 -mskip-rax-setup -march=x86-64 -mtune=generic -mno-red-zone -mcmodel=kernel -mstack-protector-guard-reg=gs -mstack-protector-guard-symbol=__ref_stack_chk_guard -Wno-sign-compare -fno-asynchronous-unwind-tables -mindirect-branch=thunk-extern -mindirect-branch-register -mindirect-branch-cs-prefix -mfunction-return=thunk-extern -fno-jump-tables -mharden-sls=all -fpatchable-function-entry=16,16 -fno-delete-null-pointer-checks -O2 -fno-allow-store-data-races -fstack-protector-strong -fno-omit-frame-pointer -fno-optimize-sibling-calls -ftrivial-auto-var-init=zero -fno-stack-clash-protection -fzero-call-used-regs=used-gpr -pg -mrecord-mcount -mfentry -DCC_USING_FENTRY -falign-functions=16 -fstrict-flex-arrays=3 -fno-strict-overflow -fno-stack-check -fconserve-stack -fno-builtin-wcslen -Wall -Wextra -Wundef -Werror=implicit-function-declaration -Werror=implicit-int -Werror=return-type -Werror=strict-prototypes -Wno-format-security -Wno-trigraphs -Wno-frame-address -Wno-address-of-packed-member -Wmissing-declarations -Wmissing-prototypes -Wframe-larger-than=1024 -Wno-main -Wno-dangling-pointer -Wvla-larger-than=1 -Wno-pointer-sign -Wcast-function-type -Wno-array-bounds -Wno-stringop-overflow -Wno-alloc-size-larger-than -Wimplicit-fallthrough=5 -Werror=date-time -Werror=incompatible-pointer-types -Werror=designated-init -Wenum-conversion -Wunused -Wno-unused-but-set-variable -Wno-unused-const-variable -Wno-packed-not-aligned -Wno-format-overflow -Wno-format-truncation -Wno-stringop-truncation -Wno-override-init -Wno-missing-field-initializers -Wno-type-limits -Wno-shift-negative-value -Wno-maybe-uninitialized -Wno-sign-compare -Wno-unused-parameter -g -gdwarf-5 -fsanitize=bounds-strict -fsanitize=shift -fsanitize=bool -fsanitize=enum -DMODULE -DKBUILD_BASENAME='"dm_writeboost_metadata"' -DKBUILD_MODNAME='"dm_writeboost"' -D__KBUILD_MODNAME=kmod_dm_writeboost -c -o dm-writeboost-metadata.o dm-writeboost-metadata.c ; /usr/src/linux-headers-6.17.0-7-generic/tools/objtool/objtool --hacks=jump_label --hacks=noinstr --hacks=skylake --retpoline --rethunk --sls --stackval --static-call --uaccess --prefix=16 --Werror --module dm-writeboost-metadata.o
# CC [M] dm-writeboost-daemon.o
gcc-13 -Wp,-MMD,./.dm-writeboost-daemon.o.d -nostdinc -I/usr/src/linux-headers-6.17.0-7-generic/arch/x86/include -I/usr/src/linux-headers-6.17.0-7-generic/arch/x86/include/generated -I/usr/src/linux-headers-6.17.0-7-generic/include -I/usr/src/linux-headers-6.17.0-7-generic/include -I/usr/src/linux-headers-6.17.0-7-generic/arch/x86/include/uapi -I/usr/src/linux-headers-6.17.0-7-generic/arch/x86/include/generated/uapi -I/usr/src/linux-headers-6.17.0-7-generic/include/uapi -I/usr/src/linux-headers-6.17.0-7-generic/include/generated/uapi -include /usr/src/linux-headers-6.17.0-7-generic/include/linux/compiler-version.h -include /usr/src/linux-headers-6.17.0-7-generic/include/linux/kconfig.h -I/usr/src/linux-headers-6.17.0-7-generic/ubuntu/include -include /usr/src/linux-headers-6.17.0-7-generic/include/linux/compiler_types.h -D__KERNEL__ -std=gnu11 -fshort-wchar -funsigned-char -fno-common -fno-PIE -fno-strict-aliasing -mno-sse -mno-mmx -mno-sse2 -mno-3dnow -mno-avx -fcf-protection=none -m64 -falign-jumps=1 -falign-loops=1 -mno-80387 -mno-fp-ret-in-387 -mpreferred-stack-boundary=3 -mskip-rax-setup -march=x86-64 -mtune=generic -mno-red-zone -mcmodel=kernel -mstack-protector-guard-reg=gs -mstack-protector-guard-symbol=__ref_stack_chk_guard -Wno-sign-compare -fno-asynchronous-unwind-tables -mindirect-branch=thunk-extern -mindirect-branch-register -mindirect-branch-cs-prefix -mfunction-return=thunk-extern -fno-jump-tables -mharden-sls=all -fpatchable-function-entry=16,16 -fno-delete-null-pointer-checks -O2 -fno-allow-store-data-races -fstack-protector-strong -fno-omit-frame-pointer -fno-optimize-sibling-calls -ftrivial-auto-var-init=zero -fno-stack-clash-protection -fzero-call-used-regs=used-gpr -pg -mrecord-mcount -mfentry -DCC_USING_FENTRY -falign-functions=16 -fstrict-flex-arrays=3 -fno-strict-overflow -fno-stack-check -fconserve-stack -fno-builtin-wcslen -Wall -Wextra -Wundef -Werror=implicit-function-declaration -Werror=implicit-int -Werror=return-type -Werror=strict-prototypes -Wno-format-security -Wno-trigraphs -Wno-frame-address -Wno-address-of-packed-member -Wmissing-declarations -Wmissing-prototypes -Wframe-larger-than=1024 -Wno-main -Wno-dangling-pointer -Wvla-larger-than=1 -Wno-pointer-sign -Wcast-function-type -Wno-array-bounds -Wno-stringop-overflow -Wno-alloc-size-larger-than -Wimplicit-fallthrough=5 -Werror=date-time -Werror=incompatible-pointer-types -Werror=designated-init -Wenum-conversion -Wunused -Wno-unused-but-set-variable -Wno-unused-const-variable -Wno-packed-not-aligned -Wno-format-overflow -Wno-format-truncation -Wno-stringop-truncation -Wno-override-init -Wno-missing-field-initializers -Wno-type-limits -Wno-shift-negative-value -Wno-maybe-uninitialized -Wno-sign-compare -Wno-unused-parameter -g -gdwarf-5 -fsanitize=bounds-strict -fsanitize=shift -fsanitize=bool -fsanitize=enum -DMODULE -DKBUILD_BASENAME='"dm_writeboost_daemon"' -DKBUILD_MODNAME='"dm_writeboost"' -D__KBUILD_MODNAME=kmod_dm_writeboost -c -o dm-writeboost-daemon.o dm-writeboost-daemon.c ; /usr/src/linux-headers-6.17.0-7-generic/tools/objtool/objtool --hacks=jump_label --hacks=noinstr --hacks=skylake --retpoline --rethunk --sls --stackval --static-call --uaccess --prefix=16 --Werror --module dm-writeboost-daemon.o
dm-writeboost-target.c: In function ‘writeboost_io_hints’:
dm-writeboost-target.c:1903:9: error: implicit declaration of function ‘blk_limits_io_opt’ [-Werror=implicit-function-declaration]
1903 | blk_limits_io_opt(limits, 4096);
| ^~~~~~~~~~~~~~~~~
# cmd_gen_objtooldep dm-writeboost-daemon.o
{ echo ; echo 'dm-writeboost-daemon.o: $(wildcard /usr/src/linux-headers-6.17.0-7-generic/tools/objtool/objtool)' ; } >> ./.dm-writeboost-daemon.o.cmd
# cmd_gen_symversions_c dm-writeboost-daemon.o
if nm dm-writeboost-daemon.o 2>/dev/null | grep -q ' __export_symbol_'; then nm dm-writeboost-daemon.o | sed -n 's/.* __export_symbol_\(.*\)//p' | /usr/src/linux-headers-6.17.0-7-generic/scripts/gendwarfksyms/gendwarfksyms dm-writeboost-daemon.o >> ./.dm-writeboost-daemon.o.cmd; fi
# cmd_gen_objtooldep dm-writeboost-metadata.o
{ echo ; echo 'dm-writeboost-metadata.o: $(wildcard /usr/src/linux-headers-6.17.0-7-generic/tools/objtool/objtool)' ; } >> ./.dm-writeboost-metadata.o.cmd
# cmd_gen_symversions_c dm-writeboost-metadata.o
if nm dm-writeboost-metadata.o 2>/dev/null | grep -q ' __export_symbol_'; then nm dm-writeboost-metadata.o | sed -n 's/.* __export_symbol_\(.*\)//p' | /usr/src/linux-headers-6.17.0-7-generic/scripts/gendwarfksyms/gendwarfksyms dm-writeboost-metadata.o >> ./.dm-writeboost-metadata.o.cmd; fi
cc1: some warnings being treated as errors
make[4]: *** [/usr/src/linux-headers-6.17.0-7-generic/scripts/Makefile.build:287: dm-writeboost-target.o] Error 1
make[3]: *** [/usr/src/linux-headers-6.17.0-7-generic/Makefile:2016: .] Error 2
make[2]: *** [/usr/src/linux-headers-6.17.0-7-generic/Makefile:248: __sub-make] Error 2
make[2]: Leaving directory '/var/lib/dkms/dm-writeboost/2.2.16/build'
make[1]: *** [Makefile:248: __sub-make] Error 2
make[1]: Leaving directory '/usr/src/linux-headers-6.17.0-7-generic'
make: *** [Makefile:11: all] Error 2
[ Test case ]
Install the latest linux-6.17 kernel on Noble:
$ sudo add-apt-repository ppa:canonical-kernel-team/ppa3
$ sudo apt install linux-generic-hwe-24.04-edge
Install dm-writeboost-dkms:
$ sudo apt install dm-writeboost-dkms
Module built and installed successfully.
Load the module:
$ sudo modprobe dm-writeboost
Modules loaded successfully.
The same procedure can be repeated on linux-6.8 to test for possible
regressions.
[ Fix ]
Apply patches from upstream enabling 6.17:
* debian/patches/fix-Dont-use-blk_limits_io-functions-in-6.12.patch
[ Regression potential ]
We may experience regressions in systems that are using the dm-
writeboost drivers, especially with kernels >= 6.8 kernel.
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