Buildresult: linus-rand/x86_64-randconfig/x86_64-gcc8 built on Jan 9 2019, 17:04
kisskb
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Status:
Failed
Date/Time:
Jan 9 2019, 17:04
Duration:
0:00:39.862972
Builder:
ka1
Revision:
fork: record start_time late (
7b55851367136b1efd84d98fea81ba57a98304cf)
Target:
linus-rand/x86_64-randconfig/x86_64-gcc8
Branch:
linus-rand
Compiler:
x86_64-gcc8
(x86_64-linux-gcc (GCC) 8.1.0 / GNU ld (GNU Binutils) 2.30)
Config:
randconfig
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Log:
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Possible errors
/kisskb/build/tmp/cc5lRRjM.s:40586: Error: can't resolve `.text.unlikely' {.text.unlikely section} - `.LVL291' {.text section} make[5]: *** [scripts/Makefile.build:277: arch/x86/kernel/cpu/resctrl/core.o] Error 1 make[4]: *** [scripts/Makefile.build:492: arch/x86/kernel/cpu/resctrl] Error 2 make[3]: *** [scripts/Makefile.build:492: arch/x86/kernel/cpu] Error 2 make[2]: *** [scripts/Makefile.build:492: arch/x86/kernel] Error 2 /kisskb/build/tmp/ccitflC1.s:96571: Error: can't resolve `.text.unlikely' {.text.unlikely section} - `.LVL479' {.text section} /kisskb/build/tmp/ccitflC1.s:98920: Error: can't resolve `.text.unlikely' {.text.unlikely section} - `.LVL508' {.text section} /kisskb/build/tmp/ccitflC1.s:99522: Error: can't resolve `.text.unlikely' {.text.unlikely section} - `.LVL508' {.text section} make[3]: *** [scripts/Makefile.build:277: arch/x86/mm/pageattr.o] Error 1 make[2]: *** [scripts/Makefile.build:492: arch/x86/mm] Error 2 make[1]: *** [Makefile:1042: arch/x86] Error 2 /kisskb/build/tmp/ccX5pHVZ.s:66820: Error: can't resolve `.text.unlikely' {.text.unlikely section} - `.LVL676' {.text section} make[3]: *** [scripts/Makefile.build:276: kernel/irq/irqdomain.o] Error 1 make[2]: *** [scripts/Makefile.build:492: kernel/irq] Error 2 /kisskb/build/tmp/ccADoLxX.s:84963: Error: can't resolve `.text.unlikely' {.text.unlikely section} - `.LVL861' {.text section} /kisskb/build/tmp/ccADoLxX.s:84974: Error: can't resolve `.text.unlikely' {.text.unlikely section} - `.LVL862' {.text section} make[3]: *** [scripts/Makefile.build:276: kernel/rcu/rcutorture.o] Error 1 make[2]: *** [scripts/Makefile.build:492: kernel/rcu] Error 2 /kisskb/build/tmp/ccWzpuvr.s:81502: Error: can't resolve `.text.unlikely' {.text.unlikely section} - `.LVL98' {.text section} /kisskb/build/tmp/ccWzpuvr.s:81513: Error: can't resolve `.text.unlikely' {.text.unlikely section} - `.LVL99' {.text section} make[3]: *** [scripts/Makefile.build:276: kernel/trace/trace_uprobe.o] Error 1 make[2]: *** [scripts/Makefile.build:492: kernel/trace] Error 2 make[1]: *** [Makefile:1042: kernel] Error 2 make: *** [Makefile:152: sub-make] Error 2
No warnings found in log.
Full Log
# git rev-parse -q --verify 7b55851367136b1efd84d98fea81ba57a98304cf^{commit} 7b55851367136b1efd84d98fea81ba57a98304cf already have revision, skipping fetch # git checkout -q -f -B kisskb 7b55851367136b1efd84d98fea81ba57a98304cf # git clean -qxdf # < git log -1 # commit 7b55851367136b1efd84d98fea81ba57a98304cf # Author: David Herrmann <dh.herrmann@gmail.com> # Date: Tue Jan 8 13:58:52 2019 +0100 # # fork: record start_time late # # This changes the fork(2) syscall to record the process start_time after # initializing the basic task structure but still before making the new # process visible to user-space. # # Technically, we could record the start_time anytime during fork(2). But # this might lead to scenarios where a start_time is recorded long before # a process becomes visible to user-space. For instance, with # userfaultfd(2) and TLS, user-space can delay the execution of fork(2) # for an indefinite amount of time (and will, if this causes network # access, or similar). # # By recording the start_time late, it much closer reflects the point in # time where the process becomes live and can be observed by other # processes. # # Lastly, this makes it much harder for user-space to predict and control # the start_time they get assigned. Previously, user-space could fork a # process and stall it in copy_thread_tls() before its pid is allocated, # but after its start_time is recorded. This can be misused to later-on # cycle through PIDs and resume the stalled fork(2) yielding a process # that has the same pid and start_time as a process that existed before. # This can be used to circumvent security systems that identify processes # by their pid+start_time combination. # # Even though user-space was always aware that start_time recording is # flaky (but several projects are known to still rely on start_time-based # identification), changing the start_time to be recorded late will help # mitigate existing attacks and make it much harder for user-space to # control the start_time a process gets assigned. # # Reported-by: Jann Horn <jannh@google.com> # Signed-off-by: Tom Gundersen <teg@jklm.no> # Signed-off-by: David Herrmann <dh.herrmann@gmail.com> # Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> # < /opt/cross/kisskb/korg/gcc-8.1.0-nolibc/x86_64-linux/bin/x86_64-linux-gcc --version # < /opt/cross/kisskb/korg/gcc-8.1.0-nolibc/x86_64-linux/bin/x86_64-linux-ld --version # < git log --format=%s --max-count=1 7b55851367136b1efd84d98fea81ba57a98304cf # < make -s -j 8 ARCH=x86_64 O=/kisskb/build/linus-rand_x86_64-randconfig_x86_64-gcc8 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-8.1.0-nolibc/x86_64-linux/bin/x86_64-linux- randconfig KCONFIG_SEED=0x8EA7EB90 # Added to kconfig CONFIG_STANDALONE=y # Added to kconfig CONFIG_PREVENT_FIRMWARE_BUILD=y # Added to kconfig CONFIG_CC_STACKPROTECTOR_STRONG=n # Added to kconfig CONFIG_GCC_PLUGINS=n # Added to kconfig CONFIG_GCC_PLUGIN_CYC_COMPLEXITY=n # Added to kconfig CONFIG_GCC_PLUGIN_SANCOV=n # Added to kconfig CONFIG_GCC_PLUGIN_LATENT_ENTROPY=n # yes \n | make -s -j 8 ARCH=x86_64 O=/kisskb/build/linus-rand_x86_64-randconfig_x86_64-gcc8 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-8.1.0-nolibc/x86_64-linux/bin/x86_64-linux- oldconfig yes: standard output: Broken pipe # make -s -j 8 ARCH=x86_64 O=/kisskb/build/linus-rand_x86_64-randconfig_x86_64-gcc8 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-8.1.0-nolibc/x86_64-linux/bin/x86_64-linux- /kisskb/build/tmp/cc5lRRjM.s: Assembler messages: /kisskb/build/tmp/cc5lRRjM.s:40586: Error: can't resolve `.text.unlikely' {.text.unlikely section} - `.LVL291' {.text section} make[5]: *** [/kisskb/src/scripts/Makefile.build:277: arch/x86/kernel/cpu/resctrl/core.o] Error 1 make[4]: *** [/kisskb/src/scripts/Makefile.build:492: arch/x86/kernel/cpu/resctrl] Error 2 make[3]: *** [/kisskb/src/scripts/Makefile.build:492: arch/x86/kernel/cpu] Error 2 make[3]: *** Waiting for unfinished jobs.... make[2]: *** [/kisskb/src/scripts/Makefile.build:492: arch/x86/kernel] Error 2 make[2]: *** Waiting for unfinished jobs.... /kisskb/build/tmp/ccitflC1.s: Assembler messages: /kisskb/build/tmp/ccitflC1.s:96571: Error: can't resolve `.text.unlikely' {.text.unlikely section} - `.LVL479' {.text section} /kisskb/build/tmp/ccitflC1.s:98920: Error: can't resolve `.text.unlikely' {.text.unlikely section} - `.LVL508' {.text section} /kisskb/build/tmp/ccitflC1.s:99522: Error: can't resolve `.text.unlikely' {.text.unlikely section} - `.LVL508' {.text section} make[3]: *** [/kisskb/src/scripts/Makefile.build:277: arch/x86/mm/pageattr.o] Error 1 make[3]: *** Waiting for unfinished jobs.... make[2]: *** [/kisskb/src/scripts/Makefile.build:492: arch/x86/mm] Error 2 make[1]: *** [/kisskb/src/Makefile:1042: arch/x86] Error 2 make[1]: *** Waiting for unfinished jobs.... /kisskb/build/tmp/ccX5pHVZ.s: Assembler messages: /kisskb/build/tmp/ccX5pHVZ.s:66820: Error: can't resolve `.text.unlikely' {.text.unlikely section} - `.LVL676' {.text section} make[3]: *** [/kisskb/src/scripts/Makefile.build:276: kernel/irq/irqdomain.o] Error 1 make[2]: *** [/kisskb/src/scripts/Makefile.build:492: kernel/irq] Error 2 make[2]: *** Waiting for unfinished jobs.... /kisskb/build/tmp/ccADoLxX.s: Assembler messages: /kisskb/build/tmp/ccADoLxX.s:84963: Error: can't resolve `.text.unlikely' {.text.unlikely section} - `.LVL861' {.text section} /kisskb/build/tmp/ccADoLxX.s:84974: Error: can't resolve `.text.unlikely' {.text.unlikely section} - `.LVL862' {.text section} make[3]: *** [/kisskb/src/scripts/Makefile.build:276: kernel/rcu/rcutorture.o] Error 1 make[3]: *** Waiting for unfinished jobs.... make[2]: *** [/kisskb/src/scripts/Makefile.build:492: kernel/rcu] Error 2 /kisskb/build/tmp/ccWzpuvr.s: Assembler messages: /kisskb/build/tmp/ccWzpuvr.s:81502: Error: can't resolve `.text.unlikely' {.text.unlikely section} - `.LVL98' {.text section} /kisskb/build/tmp/ccWzpuvr.s:81513: Error: can't resolve `.text.unlikely' {.text.unlikely section} - `.LVL99' {.text section} make[3]: *** [/kisskb/src/scripts/Makefile.build:276: kernel/trace/trace_uprobe.o] Error 1 make[2]: *** [/kisskb/src/scripts/Makefile.build:492: kernel/trace] Error 2 make[1]: *** [/kisskb/src/Makefile:1042: kernel] Error 2 make: *** [Makefile:152: sub-make] Error 2 Command 'make -s -j 8 ARCH=x86_64 O=/kisskb/build/linus-rand_x86_64-randconfig_x86_64-gcc8 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-8.1.0-nolibc/x86_64-linux/bin/x86_64-linux- ' returned non-zero exit status 2 # rm -rf /kisskb/build/linus-rand_x86_64-randconfig_x86_64-gcc8 # Build took: 0:00:39.862972
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