Buildresult: linus/m5272c3_defconfig/m68k-gcc8 built on Dec 8 2019, 06:38

kisskb

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Status:	Failed
Date/Time:	Dec 8 2019, 06:38
Duration:	0:00:22.132627
Builder:	blade46
Revision:	pipe: fix poll/select race introduced by the pipe rework (`ad910e36da4ca3a1bd436989f632d062dda0c921)`
Target:	linus/m5272c3_defconfig/m68k-gcc8
Branch:	linus
Compiler:	m68k-gcc8 (m68k-linux-gcc (GCC) 4.6.3 / GNU ld (GNU Binutils) 2.22)
Config:	m5272c3_defconfig (download)
Log:	Download original Possible errors net/core/rtnetlink.c:5436:1: internal compiler error: in maybe_add_or_update_dep_1, at sched-deps.c:845 make[3]: * [scripts/Makefile.build:265: net/core/rtnetlink.o] Error 1 make[2]: * [scripts/Makefile.build:503: net/core] Error 2 make[1]: * [Makefile:1692: net] Error 2 make: * [Makefile:179: sub-make] Error 2 Possible warnings (6) <stdin>:1511:2: warning: #warning syscall clone3 not implemented [-Wcpp] kernel/printk/printk.c:204:16: warning: 'old' may be used uninitialized in this function [-Wuninitialized] include/linux/list.h:65:12: warning: 'pdeo' may be used uninitialized in this function [-Wuninitialized] drivers/net/ethernet/freescale/fec_main.c:915:6: warning: unused variable 'val' [-Wunused-variable] drivers/net/ethernet/freescale/fec_main.c:1643:28: warning: unused variable 'pdata' [-Wunused-variable] net/core/filter.c:3603:4: warning: value computed is not used [-Wunused-value] Full Log # git rev-parse -q --verify ad910e36da4ca3a1bd436989f632d062dda0c921^{commit} ad910e36da4ca3a1bd436989f632d062dda0c921 already have revision, skipping fetch # git checkout -q -f -B kisskb ad910e36da4ca3a1bd436989f632d062dda0c921 # git clean -qxdf # < git log -1 # commit ad910e36da4ca3a1bd436989f632d062dda0c921 # Author: Linus Torvalds <torvalds@linux-foundation.org> # Date: Sat Dec 7 10:41:17 2019 -0800 # # pipe: fix poll/select race introduced by the pipe rework # # The kernel wait queues have a basic rule to them: you add yourself to # the wait-queue first, and then you check the things that you're going to # wait on. That avoids the races with the event you're waiting for. # # The same goes for poll/select logic: the "poll_wait()" goes first, and # then you check the things you're polling for. # # Of course, if you use locking, the ordering doesn't matter since the # lock will serialize with anything that changes the state you're looking # at. That's not the case here, though. # # So move the poll_wait() first in pipe_poll(), before you start looking # at the pipe state. # # Fixes: 8cefc107ca54 ("pipe: Use head and tail pointers for the ring, not cursor and length") # Cc: David Howells <dhowells@redhat.com> # Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> # < /opt/cross/kisskb/gcc-4.6.3-nolibc/m68k-linux/bin/m68k-linux-gcc --version # < /opt/cross/kisskb/gcc-4.6.3-nolibc/m68k-linux/bin/m68k-linux-ld --version # < git log --format=%s --max-count=1 ad910e36da4ca3a1bd436989f632d062dda0c921 # < make -s -j 32 ARCH=m68k O=/kisskb/build/linus_m5272c3_defconfig_m68k CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/m68k-linux/bin/m68k-linux- m5272c3_defconfig # make -s -j 32 ARCH=m68k O=/kisskb/build/linus_m5272c3_defconfig_m68k CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/m68k-linux/bin/m68k-linux- <stdin>:1511:2: warning: #warning syscall clone3 not implemented [-Wcpp] /kisskb/src/kernel/printk/printk.c: In function 'devkmsg_sysctl_set_loglvl': /kisskb/src/kernel/printk/printk.c:204:16: warning: 'old' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/fs/proc/inode.c: In function 'proc_reg_open': /kisskb/src/include/linux/list.h:65:12: warning: 'pdeo' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/fs/proc/inode.c:338:21: note: 'pdeo' was declared here /kisskb/src/drivers/net/ethernet/freescale/fec_main.c: In function 'fec_restart': /kisskb/src/drivers/net/ethernet/freescale/fec_main.c:915:6: warning: unused variable 'val' [-Wunused-variable] /kisskb/src/drivers/net/ethernet/freescale/fec_main.c: In function 'fec_get_mac': /kisskb/src/drivers/net/ethernet/freescale/fec_main.c:1643:28: warning: unused variable 'pdata' [-Wunused-variable] /kisskb/src/net/core/filter.c: In function 'bpf_clear_redirect_map': /kisskb/src/net/core/filter.c:3603:4: warning: value computed is not used [-Wunused-value] /kisskb/src/net/core/rtnetlink.c: In function 'rtnetlink_rcv_msg': /kisskb/src/net/core/rtnetlink.c:5436:1: internal compiler error: in maybe_add_or_update_dep_1, at sched-deps.c:845 Please submit a full bug report, with preprocessed source if appropriate. See <http://gcc.gnu.org/bugs.html> for instructions. make[3]: * [/kisskb/src/scripts/Makefile.build:265: net/core/rtnetlink.o] Error 1 make[3]: * Waiting for unfinished jobs.... make[2]: * [/kisskb/src/scripts/Makefile.build:503: net/core] Error 2 make[2]: * Waiting for unfinished jobs.... make[1]: * [/kisskb/src/Makefile:1692: net] Error 2 make: * [Makefile:179: sub-make] Error 2 Command 'make -s -j 32 ARCH=m68k O=/kisskb/build/linus_m5272c3_defconfig_m68k CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/m68k-linux/bin/m68k-linux- ' returned non-zero exit status 2 # rm -rf /kisskb/build/linus_m5272c3_defconfig_m68k # Build took: 0:00:22.132627

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