Buildresult: powerpc-fixes/mpc85xx_smp_defconfig/powerpc-gcc4.9 built on Nov 5 2020, 12:55

kisskb

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Status:	Failed
Date/Time:	Nov 5 2020, 12:55
Duration:	0:02:37.181978
Builder:	ka4
Revision:	powerpc: Use asm_goto_volatile for put_user() (`1344a232016dbb0492be81f8517c4bf8fc1c6610)`
Target:	powerpc-fixes/mpc85xx_smp_defconfig/powerpc-gcc4.9
Branch:	powerpc-fixes
Compiler:	powerpc-gcc4.9 (powerpc64-linux-gcc (GCC) 4.9.4 / GNU ld (GNU Binutils) 2.29.1.20170915)
Config:	mpc85xx_smp_defconfig (download)
Log:	Download original Possible errors cc1: fatal error: opening output file arch/powerpc/boot/dts/fsl/.mpc8540ads.dtb.dts.tmp: No such file or directory make[2]: * [scripts/Makefile.lib:326: arch/powerpc/boot/dts/fsl/mpc8540ads.dtb] Error 1 make[1]: * [arch/powerpc/Makefile:295: zImage] Error 2 make: *** [Makefile:185: __sub-make] Error 2 Possible warnings (1) include/linux/err.h:22:49: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast] Full Log # git rev-parse -q --verify 1344a232016dbb0492be81f8517c4bf8fc1c6610^{commit} 1344a232016dbb0492be81f8517c4bf8fc1c6610 already have revision, skipping fetch # git checkout -q -f -B kisskb 1344a232016dbb0492be81f8517c4bf8fc1c6610 # git clean -qxdf # < git log -1 # commit 1344a232016dbb0492be81f8517c4bf8fc1c6610 # Author: Michael Ellerman <mpe@ellerman.id.au> # Date: Wed Nov 4 22:17:42 2020 +1100 # # powerpc: Use asm_goto_volatile for put_user() # # Andreas reported that commit ee0a49a6870e ("powerpc/uaccess: Switch # __put_user_size_allowed() to __put_user_asm_goto()") broke # CLONE_CHILD_SETTID. # # Further inspection showed that the put_user() in schedule_tail() was # missing entirely, the store not emitted by the compiler. # # <.schedule_tail>: # mflr r0 # std r0,16(r1) # stdu r1,-112(r1) # bl <.finish_task_switch> # ld r9,2496(r3) # cmpdi cr7,r9,0 # bne cr7,<.schedule_tail+0x60> # ld r3,392(r13) # ld r9,1392(r3) # cmpdi cr7,r9,0 # beq cr7,<.schedule_tail+0x3c> # li r4,0 # li r5,0 # bl <.__task_pid_nr_ns> # nop # bl <.calculate_sigpending> # nop # addi r1,r1,112 # ld r0,16(r1) # mtlr r0 # blr # nop # nop # nop # bl <.__balance_callback> # b <.schedule_tail+0x1c> # # Notice there are no stores other than to the stack. There should be a # stw in there for the store to current->set_child_tid. # # This is only seen with GCC 4.9 era compilers (tested with 4.9.3 and # 4.9.4), and only when CONFIG_PPC_KUAP is disabled. # # When CONFIG_PPC_KUAP=y, the inline asm that's part of the isync() # and mtspr() inlined via allow_user_access() seems to be enough to # avoid the bug. # # We already have a macro to work around this (or a similar bug), called # asm_volatile_goto which includes an empty asm block to tickle the # compiler into generating the right code. So use that. # # With this applied the code generation looks more like it will work: # # <.schedule_tail>: # mflr r0 # std r31,-8(r1) # std r0,16(r1) # stdu r1,-144(r1) # std r3,112(r1) # bl <._mcount> # nop # ld r3,112(r1) # bl <.finish_task_switch> # ld r9,2624(r3) # cmpdi cr7,r9,0 # bne cr7,<.schedule_tail+0xa0> # ld r3,2408(r13) # ld r31,1856(r3) # cmpdi cr7,r31,0 # beq cr7,<.schedule_tail+0x80> # li r4,0 # li r5,0 # bl <.__task_pid_nr_ns> # nop # li r9,-1 # clrldi r9,r9,12 # cmpld cr7,r31,r9 # bgt cr7,<.schedule_tail+0x80> # lis r9,16 # rldicr r9,r9,32,31 # subf r9,r31,r9 # cmpldi cr7,r9,3 # ble cr7,<.schedule_tail+0x80> # li r9,0 # stw r3,0(r31) <-- stw # nop # bl <.calculate_sigpending> # nop # addi r1,r1,144 # ld r0,16(r1) # ld r31,-8(r1) # mtlr r0 # blr # nop # bl <.__balance_callback> # b <.schedule_tail+0x30> # # Fixes: ee0a49a6870e ("powerpc/uaccess: Switch __put_user_size_allowed() to __put_user_asm_goto()") # Reported-by: Andreas Schwab <schwab@linux-m68k.org> # Tested-by: Andreas Schwab <schwab@linux-m68k.org> # Suggested-by: Christophe Leroy <christophe.leroy@csgroup.eu> # Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> # Link: https://lore.kernel.org/r/20201104111742.672142-1-mpe@ellerman.id.au # < /opt/cross/kisskb/korg/gcc-4.9.4-nolibc/powerpc64-linux/bin/powerpc64-linux-gcc --version # < /opt/cross/kisskb/korg/gcc-4.9.4-nolibc/powerpc64-linux/bin/powerpc64-linux-ld --version # < git log --format=%s --max-count=1 1344a232016dbb0492be81f8517c4bf8fc1c6610 # < make -s -j 10 ARCH=powerpc O=/kisskb/build/powerpc-fixes_mpc85xx_smp_defconfig_powerpc-gcc4.9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-4.9.4-nolibc/powerpc64-linux/bin/powerpc64-linux- mpc85xx_smp_defconfig # make -s -j 10 ARCH=powerpc O=/kisskb/build/powerpc-fixes_mpc85xx_smp_defconfig_powerpc-gcc4.9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-4.9.4-nolibc/powerpc64-linux/bin/powerpc64-linux- In file included from /kisskb/src/include/linux/kernel.h:11:0, from /kisskb/src/include/linux/list.h:9, from /kisskb/src/include/linux/module.h:12, from /kisskb/src/drivers/net/ethernet/freescale/fs_enet/mac-scc.c:15: /kisskb/src/drivers/net/ethernet/freescale/fs_enet/mac-scc.c: In function 'allocate_bd': /kisskb/src/include/linux/err.h:22:49: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast] #define IS_ERR_VALUE(x) unlikely((unsigned long)(void )(x) >= (unsigned long)-MAX_ERRNO) ^ /kisskb/src/include/linux/compiler.h:78:42: note: in definition of macro 'unlikely' # define unlikely(x) __builtin_expect(!!(x), 0) ^ /kisskb/src/drivers/net/ethernet/freescale/fs_enet/mac-scc.c:139:6: note: in expansion of macro 'IS_ERR_VALUE' if (IS_ERR_VALUE(fep->ring_mem_addr)) ^ cc1: fatal error: opening output file arch/powerpc/boot/dts/fsl/.mpc8540ads.dtb.dts.tmp: No such file or directory compilation terminated. make[2]: [scripts/Makefile.lib:326: arch/powerpc/boot/dts/fsl/mpc8540ads.dtb] Error 1 make[2]: * Waiting for unfinished jobs.... make[1]: * [arch/powerpc/Makefile:295: zImage] Error 2 make[1]: * Waiting for unfinished jobs.... make: *** [Makefile:185: __sub-make] Error 2 Command 'make -s -j 10 ARCH=powerpc O=/kisskb/build/powerpc-fixes_mpc85xx_smp_defconfig_powerpc-gcc4.9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-4.9.4-nolibc/powerpc64-linux/bin/powerpc64-linux- ' returned non-zero exit status 2 # rm -rf /kisskb/build/powerpc-fixes_mpc85xx_smp_defconfig_powerpc-gcc4.9 # Build took: 0:02:37.181978

© Michael Ellerman 2006-2018.