Date: Tue, 25 Oct 2016 21:37:35 +0000 From: bugzilla-noreply@freebsd.org To: freebsd-arm@FreeBSD.org Subject: [Bug 213785] stable/11 -r307797 on BPi-M3 (cortex-a7): xgcc's cc1 during lang/gcc6 build gets SIGSYS failures (/usr/ports -r424540) Message-ID: <bug-213785-7@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=213785 Bug ID: 213785 Summary: stable/11 -r307797 on BPi-M3 (cortex-a7): xgcc's cc1 during lang/gcc6 build gets SIGSYS failures (/usr/ports -r424540) Product: Base System Version: 11.0-STABLE Hardware: arm OS: Any Status: New Severity: Affects Only Me Priority: --- Component: arm Assignee: freebsd-arm@FreeBSD.org Reporter: markmi@dsl-only.net [See https://lists.freebsd.org/pipermail/freebsd-stable/2016-October/086125.html for more supporting details.] While trying to build lang/gcc6 on a BPI-M3 (Cortex-A7, ALLWINNER) I got "xgcc: internal compiler error: Bad system call (program cc1)", which means a SIGSYS (signal 12) resulted. [I will note that I'v never seen this issue (so far) on the rpi2: This may be KERNCONF=ALLWINNER specific. But I've not yet updated to -r307797 on the rpi2. The BPI-M3 context is new for me; the rpi2 I've been using for a long time.] This was under/on: root@bananapi-m3:/usr/ports # uname -apKU FreeBSD bananapi-m3 11.0-STABLE FreeBSD 11.0-STABLE #0 r307797M: Mon Oct 24 00:41:16 PDT 2016 markmi@FreeBSDx64:/usr/local/src/crochet/work/obj/arm.armv6/usr/src/sys/ALLWINNER arm armv6 1100505 1100505 [Note this was cross-built and then a matching svnlite co was done on the BPi-M3. So the source timestamps on the BPi-M3 are newer than the times from the cross build.] root@bananapi-m3:/usr/ports # svnlite info /usr/ports/ | grep "Re[lv]" Relative URL: ^/head Revision: 424540 Last Changed Rev: 424540 dmesg | tail shows: pid 29581 (cc1), uid 0: exited on signal 12 (core dumped) pid 29613 (cc1), uid 0: exited on signal 12 (core dumped) pid 29622 (cc1), uid 0: exited on signal 12 (core dumped) pid 29651 (cc1), uid 0: exited on signal 12 (core dumped) pid 29660 (cc1), uid 0: exited on signal 12 (core dumped) pid 29798 (cc1), uid 0: exited on signal 12 (core dumped) pid 30422 (cc1), uid 0: exited on signal 12 (core dumped) pid 30426 (cc1), uid 0: exited on signal 12 (core dumped) pid 30428 (cc1), uid 0: exited on signal 12 (core dumped) pid 30431 (cc1), uid 0: exited on signal 12 (core dumped) (All the lang/gcc6 prerequisites built okay on the BPi-M3.) Unfortunately direct execution of the cc1 command on the libgcc2.i from a use of -save-temps does not fail. For some reason the failure is only when xgcc causes the cc1 command execution. Also unfortunately truss gets a segmentation fault of its own trying the handle watching the SIGSYS related activity. (A truss bugzilla report has been made.) Thus the following tail of the truss output for leading up to the SIGSYS does not cover the SIGSYS related activity itself: root@bananapi-m3:/usr/obj/portswork/usr/ports/lang/gcc6/work/.build/armv6-portbld-freebsd11.0/libgcc # tail truss.log 31183 100086: close(3) = 0 (0x0) 31183 100086: openat(AT_FDCWD,"/usr/obj/portswork/usr/ports/lang/gcc6/work/gcc-6.2.0/libgcc/longlong.h",O_NOCTTY,00) ERR#2 'No such file or directory' 31183 100086: openat(AT_FDCWD,"./longlong.h",O_NOCTTY,00) ERR#2 'No such file or directory' 31183 100086: openat(AT_FDCWD,"../.././gcc/longlong.h",O_NOCTTY,00) ERR#2 'No such file or directory' 31183 100086: openat(AT_FDCWD,"/usr/obj/portswork/usr/ports/lang/gcc6/work/gcc-6.2.0/libgcc/../gcc/longlong.h",O_NOCTTY,00) ERR#2 'No such file or directory' 31183 100086: openat(AT_FDCWD,"/usr/obj/portswork/usr/ports/lang/gcc6/work/gcc-6.2.0/libgcc/../include/longlong.h",O_NOCTTY,00) = 3 (0x3) 31183 100086: fstat(3,{ mode=-rw-r--r-- ,inode=573594,size=61185,blksize=32768 }) = 0 (0x0) 31183 100086: read(3,"/* longlong.h -- definitions for"...,61185) = 61185 (0xef01) 31183 100086: close(3) = 0 (0x0) 31183 100086: mmap(0x0,16384,PROT_READ|PROT_WRITE,MAP_PRIVATE|MAP_ANON,16384,0x100000000) Via using gdb on truss [with truss running xgcc and xgcc in turn running its cc1 instance]: root@bananapi-m3:/usr/obj/portswork/usr/ports/lang/gcc6/work/.build/armv6-portbld-freebsd11.0/libgcc # gdb truss . . . [the below is in enter_syscall] . . . 380 t->cs.name = sysdecode_syscallname(t->proc->abi->abi, t->cs.number); 381 if (t->cs.name == NULL) (gdb) 382 fprintf(info->outfile, "-- UNKNOWN %s SYSCALL %d --\n", 383 t->proc->abi->type, t->cs.number); 384 385 sc = get_syscall(t->cs.name, narg); 386 t->cs.nargs = sc->nargs; 387 assert(sc->nargs <= nitems(t->cs.s_args)); 388 389 t->cs.sc = sc; (t->cs.name == NULL after line 380). . . Looking at the two things that the fprintf on lines 382 and 383 would report: (gdb) print t->proc->abi->type $4 = 0x10166 "FreeBSD ELF32" (gdb) print t->cs.number $5 = 580828064 FYI: 580828064 = 0x229EBBA0 (sc == NULL results from line 385 so sc->nargs on line 386 gets a SIGSEGV.) Just for completness: (gdb) print *t $2 = {entries = {le_next = 0x0, le_prev = 0x20617070}, proc = 0x20617060, tid = 100150, in_syscall = 1, cs = {sc = 0x0, name = 0x0, number = 580828064, args = 0x2061b0c0, nargs = 0, s_args = 0x2061b0ec}, before = {tv_sec = 1477418265, tv_nsec = 492342263}, after = {tv_sec = 1477418265, tv_nsec = 492496630}} (gdb) print sc $3 = (struct syscall *) 0x0 -- You are receiving this mail because: You are the assignee for the bug.help
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