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cmd/cgo/internal/testcarchive: `TestSignalForwardingGo` failures with SIGABRT instead of the expected SIGSEGV #64656

Open bcmills opened 9 months ago

bcmills commented 9 months ago 
#!watchflakes
post <- pkg == "cmd/cgo/internal/testcarchive" && test == "TestSignalForwardingGo" && `got "signal: aborted \(core dumped\)"`

Go version

c29444ef39a44ad56ddf7b3d2aa8a51df1163e04

What operating system and processor architecture are you using (go env)?

:: Running /data/golang/workdir/go/src/make.bash with args ["/data/golang/workdir/go/src/make.bash" "-force"] and env ["LANG=en_US.UTF-8" "PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin" "HOME=/root" "LOGNAME=root" "USER=root" "SHELL=/bin/sh" "INVOCATION_ID=c7eff962f62547d58bfc1ce0cd57453d" "JOURNAL_STREAM=9:337144255" "META_BUILDLET_BINARY_URL=https://storage.googleapis.com/go-builder-data/buildlet.linux-s390x" "GO_STAGE0_NET_DELAY=0s" "GO_STAGE0_DL_DELAY=100ms" "WORKDIR=/data/golang/workdir" "GOROOT_BOOTSTRAP=/data/golang/workdir/go1.4" "GO_BUILDER_NAME=linux-s390x-ibm" "GO_BUILDER_FLAKY_NET=1" "GO_TEST_TIMEOUT_SCALE=5" "GOBIN=" "TMPDIR=/data/golang/workdir/tmp" "GOCACHE=/data/golang/workdir/gocache" "GOPLSCACHE=/data/golang/workdir/goplscache" "PWD=/data/golang/workdir/go/src"] in dir /data/golang/workdir/go/src

What did you do?

https://build.golang.org/log/78e761f843d3796f9ba2417bc7aa9195b53fd982

What did you expect to see?

All tests passing.

What did you see instead?

``` --- FAIL: TestSignalForwardingGo (2.25s) carchive_test.go:676: go build -buildmode=c-archive -o libgo2.a ./libgo2 carchive_test.go:693: [gcc -fPIC -m64 -march=z196 -pthread -Wl,--no-gc-sections -fmessage-length=0 -ffile-prefix-map=/data/golang/workdir/tmp/go-build528665555214635621=/tmp/go-build -gno-record-gcc-switches -I /data/golang/workdir/tmp/carchive_test6279244834931498601/pkg/linux_s390x_shared/testcarchive -o testp main5.c libgo2.a] carchive_test.go:704: [./testp] 4 carchive_test.go:756: SIGSEGV: segmentation violation PC=0x107b3d8 m=1 sigcode=0 addr=0x6442400000000 goroutine 0 gp=0xc0000024e0 m=1 mp=0xc000056008 [idle]: runtime.futex(0xc000056148, 0x80, 0x0, 0x0, 0x0, 0x0) /data/golang/workdir/go/src/runtime/sys_linux_s390x.s:496 +0x28 fp=0x3ffcaf7e288 sp=0x3ffcaf7e288 pc=0x107b3d8 runtime.futexsleep(0xc000056148, 0x0, 0xffffffffffffffff) /data/golang/workdir/go/src/runtime/os_linux.go:69 +0x52 fp=0x3ffcaf7e2d0 sp=0x3ffcaf7e288 pc=0x103c792 runtime.notesleep(0xc000056148) /data/golang/workdir/go/src/runtime/lock_futex.go:170 +0xb6 fp=0x3ffcaf7e300 sp=0x3ffcaf7e2d0 pc=0x100ef76 runtime.mPark(...) /data/golang/workdir/go/src/runtime/proc.go:1759 runtime.stoplockedm() /data/golang/workdir/go/src/runtime/proc.go:3024 +0x9a fp=0x3ffcaf7e350 sp=0x3ffcaf7e300 pc=0x104a2ca runtime.schedule() /data/golang/workdir/go/src/runtime/proc.go:3845 +0x54 fp=0x3ffcaf7e388 sp=0x3ffcaf7e350 pc=0x104d1f4 runtime.park_m(0xc000002680) /data/golang/workdir/go/src/runtime/proc.go:4034 +0x2d2 fp=0x3ffcaf7e3d8 sp=0x3ffcaf7e388 pc=0x104dad2 runtime.mcall(0x3ffcaf7e3e8) /data/golang/workdir/go/src/runtime/asm_s390x.s:230 +0x5a fp=0x3ffcaf7e3e8 sp=0x3ffcaf7e3d8 pc=0x107818a goroutine 17 gp=0xc000002680 m=nil [select (no cases), locked to thread]: runtime.gopark(0x0, 0x0, 0xa, 0x1, 0x1) /data/golang/workdir/go/src/runtime/proc.go:402 +0x136 fp=0xc000064e58 sp=0xc000064e40 pc=0x1043f06 runtime.block() /data/golang/workdir/go/src/runtime/select.go:103 +0x3c fp=0xc000064e80 sp=0xc000064e58 pc=0x1058d1c main.Block(...) /data/golang/workdir/tmp/carchive_test6279244834931498601/src/testcarchive/libgo2/libgo2.go:57 _cgoexp_b154175197ba_Block(0x3ffcaf7e50f) _cgo_gotypes.go:60 +0x26 fp=0xc000064e88 sp=0xc000064e80 pc=0x109eff6 runtime.cgocallbackg1(0x109efd0, 0x3ffcaf7e50f, 0x0) /data/golang/workdir/go/src/runtime/cgocall.go:403 +0x28a fp=0xc000064f50 sp=0xc000064e88 pc=0x100765a runtime.cgocallbackg(0x109efd0, 0x3ffcaf7e50f, 0x0) /data/golang/workdir/go/src/runtime/cgocall.go:322 +0x174 fp=0xc000064fc0 sp=0xc000064f50 pc=0x1007304 runtime.cgocallback(0x0, 0x0, 0x0) /data/golang/workdir/go/src/runtime/asm_s390x.s:650 +0xdc fp=0xc000064fe0 sp=0xc000064fc0 pc=0x107a47c runtime.goexit({}) /data/golang/workdir/go/src/runtime/asm_s390x.s:774 +0x2 fp=0xc000064fe0 sp=0xc000064fe0 pc=0x107a5e2 goroutine 2 gp=0xc000002b60 m=nil [force gc (idle)]: runtime.gopark(0x10dda18, 0x1145d40, 0x11, 0xa, 0x1) /data/golang/workdir/go/src/runtime/proc.go:402 +0x136 fp=0xc000050fb0 sp=0xc000050f98 pc=0x1043f06 runtime.goparkunlock(...) /data/golang/workdir/go/src/runtime/proc.go:408 runtime.forcegchelper() /data/golang/workdir/go/src/runtime/proc.go:326 +0xd2 fp=0xc000050fd8 sp=0xc000050fb0 pc=0x1043d02 runtime.goexit({}) /data/golang/workdir/go/src/runtime/asm_s390x.s:774 +0x2 fp=0xc000050fd8 sp=0xc000050fd8 pc=0x107a5e2 created by runtime.init.5 in goroutine 1 /data/golang/workdir/go/src/runtime/proc.go:314 +0x30 goroutine 3 gp=0xc000003040 m=nil [GC sweep wait]: runtime.gopark(0x10dda18, 0x1145ea0, 0xc, 0x9, 0x1) /data/golang/workdir/go/src/runtime/proc.go:402 +0x136 fp=0xc000051790 sp=0xc000051778 pc=0x1043f06 runtime.goparkunlock(...) /data/golang/workdir/go/src/runtime/proc.go:408 runtime.bgsweep(0xc000078000) /data/golang/workdir/go/src/runtime/mgcsweep.go:277 +0xaa fp=0xc0000517c8 sp=0xc000051790 pc=0x102b60a runtime.gcenable.gowrap1() /data/golang/workdir/go/src/runtime/mgc.go:203 +0x5e fp=0xc0000517d8 sp=0xc0000517c8 pc=0x101d64e runtime.goexit({}) /data/golang/workdir/go/src/runtime/asm_s390x.s:774 +0x2 fp=0xc0000517d8 sp=0xc0000517d8 pc=0x107a5e2 created by runtime.gcenable in goroutine 1 /data/golang/workdir/go/src/runtime/mgc.go:203 +0xa8 goroutine 4 gp=0xc0000031e0 m=nil [GC scavenge wait]: runtime.gopark(0x10dda18, 0x1146000, 0xd, 0xa, 0x2) /data/golang/workdir/go/src/runtime/proc.go:402 +0x136 fp=0xc000051f80 sp=0xc000051f68 pc=0x1043f06 runtime.goparkunlock(...) /data/golang/workdir/go/src/runtime/proc.go:408 runtime.(*scavengerState).park(0x1146000) /data/golang/workdir/go/src/runtime/mgcscavenge.go:425 +0x72 fp=0xc000051fa8 sp=0xc000051f80 pc=0x1028892 runtime.bgscavenge(0xc000078000) /data/golang/workdir/go/src/runtime/mgcscavenge.go:653 +0x5a fp=0xc000051fc8 sp=0xc000051fa8 pc=0x1028f4a runtime.gcenable.gowrap2() /data/golang/workdir/go/src/runtime/mgc.go:204 +0x5e fp=0xc000051fd8 sp=0xc000051fc8 pc=0x101d5ce runtime.goexit({}) /data/golang/workdir/go/src/runtime/asm_s390x.s:774 +0x2 fp=0xc000051fd8 sp=0xc000051fd8 pc=0x107a5e2 created by runtime.gcenable in goroutine 1 /data/golang/workdir/go/src/runtime/mgc.go:204 +0x10e goroutine 18 gp=0xc00008a680 m=nil [finalizer wait]: runtime.gopark(0x10dd950, 0x11b3628, 0x10, 0xa, 0x1) /data/golang/workdir/go/src/runtime/proc.go:402 +0x136 fp=0xc000050718 sp=0xc000050700 pc=0x1043f06 runtime.runfinq() /data/golang/workdir/go/src/runtime/mfinal.go:194 +0x13a fp=0xc0000507d8 sp=0xc000050718 pc=0x101c15a runtime.goexit({}) /data/golang/workdir/go/src/runtime/asm_s390x.s:774 +0x2 fp=0xc0000507d8 sp=0xc0000507d8 pc=0x107a5e2 created by runtime.createfing in goroutine 1 /data/golang/workdir/go/src/runtime/mfinal.go:164 +0x64 r0 0x0 r1 0xee r2 0xc000056148 r3 0x80 r4 0x0 r5 0x0 r6 0x0 r7 0x0 r8 0xc000056008 r9 0x0 r10 0x0 r11 0x3ffb2077820 r12 0x0 r13 0xc0000024e0 r14 0x103c792 r15 0x3ffcaf7e288 pc 0x107b3d8 link 0x103c792 ----- carchive_test.go:644: got "signal: aborted (core dumped)"; expected signal "quit" or "segmentation fault" FAIL FAIL cmd/cgo/internal/testcarchive 64.865s ```

(attn @golang/s390x)

gopherbot commented 9 months ago

Found new dashboard test flakes for:

#!watchflakes
post <- pkg == "cmd/cgo/internal/testcarchive" && test == "TestSignalForwardingGo" && `got "signal: aborted \(core dumped\)"`
2023-12-05 20:34 linux-s390x-ibm go@c29444ef cmd/cgo/internal/testcarchive.TestSignalForwardingGo (log) --- FAIL: TestSignalForwardingGo (2.25s) carchive_test.go:676: go build -buildmode=c-archive -o libgo2.a ./libgo2 carchive_test.go:693: [gcc -fPIC -m64 -march=z196 -pthread -Wl,--no-gc-sections -fmessage-length=0 -ffile-prefix-map=/data/golang/workdir/tmp/go-build528665555214635621=/tmp/go-build -gno-record-gcc-switches -I /data/golang/workdir/tmp/carchive_test6279244834931498601/pkg/linux_s390x_shared/testcarchive -o testp main5.c libgo2.a] carchive_test.go:704: [./testp] 4 carchive_test.go:756: SIGSEGV: segmentation violation PC=0x107b3d8 m=1 sigcode=0 addr=0x6442400000000 goroutine 0 gp=0xc0000024e0 m=1 mp=0xc000056008 [idle]: runtime.futex(0xc000056148, 0x80, 0x0, 0x0, 0x0, 0x0) /data/golang/workdir/go/src/runtime/sys_linux_s390x.s:496 +0x28 fp=0x3ffcaf7e288 sp=0x3ffcaf7e288 pc=0x107b3d8 ... r8 0xc000056008 r9 0x0 r10 0x0 r11 0x3ffb2077820 r12 0x0 r13 0xc0000024e0 r14 0x103c792 r15 0x3ffcaf7e288 pc 0x107b3d8 link 0x103c792 ----- carchive_test.go:644: got "signal: aborted (core dumped)"; expected signal "quit" or "segmentation fault"

— watchflakes

gopherbot commented 9 months ago

Found new dashboard test flakes for:

#!watchflakes
post <- pkg == "cmd/cgo/internal/testcarchive" && test == "TestSignalForwardingGo" && `got "signal: aborted \(core dumped\)"`
2023-12-11 19:32 linux-s390x-ibm-race go@c844970f cmd/cgo/internal/testcarchive.TestSignalForwardingGo (log) --- FAIL: TestSignalForwardingGo (4.57s) carchive_test.go:676: go build -buildmode=c-archive -o libgo2.a ./libgo2 carchive_test.go:693: [gcc -fPIC -m64 -march=z196 -pthread -Wl,--no-gc-sections -fmessage-length=0 -ffile-prefix-map=/data/golang/workdir/tmp/go-build3452279758=/tmp/go-build -gno-record-gcc-switches -I /data/golang/workdir/tmp/carchive_test3944133467/pkg/linux_s390x_shared/testcarchive -o testp main5.c libgo2.a] carchive_test.go:704: [./testp] 4 carchive_test.go:756: SIGSEGV: segmentation violation PC=0x107b408 m=1 sigcode=0 addr=0x4e0a600000000 goroutine 0 gp=0xc000002540 m=1 mp=0xc000056008 [idle]: runtime.futex(0xc000056148, 0x80, 0x0, 0x0, 0x0, 0x0) /data/golang/workdir/go/src/runtime/sys_linux_s390x.s:496 +0x28 fp=0x3fff57fef78 sp=0x3fff57fef78 pc=0x107b408 ... r8 0x10553be r9 0x3ffbb8fe4f4 r10 0x0 r11 0x3ffbb8f7820 r12 0x0 r13 0xc000002540 r14 0x103c772 r15 0x3fff57fef78 pc 0x107b408 link 0x103c772 ----- carchive_test.go:644: got "signal: aborted (core dumped)"; expected signal "quit" or "segmentation fault"

— watchflakes

mknyszek commented 9 months ago

Similar to #64650, I wonder if this would be fairly straightforward to bisect. If anyone from @golang/s390x has time and easier access to a machine, it'll hopefully be straightforward to identify the root cause, if bisection is feasible.

gopherbot commented 9 months ago

Found new dashboard test flakes for:

#!watchflakes
post <- pkg == "cmd/cgo/internal/testcarchive" && test == "TestSignalForwardingGo" && `got "signal: aborted \(core dumped\)"`
2023-12-18 23:29 linux-s390x-ibm go@7383b2a4 cmd/cgo/internal/testcarchive.TestSignalForwardingGo (log) --- FAIL: TestSignalForwardingGo (1.78s) carchive_test.go:676: go build -buildmode=c-archive -o libgo2.a ./libgo2 carchive_test.go:693: [gcc -fPIC -m64 -march=z196 -pthread -Wl,--no-gc-sections -fmessage-length=0 -ffile-prefix-map=/data/golang/workdir/tmp/go-build4174037875=/tmp/go-build -gno-record-gcc-switches -I /data/golang/workdir/tmp/carchive_test3460345911/pkg/linux_s390x_shared/testcarchive -o testp main5.c libgo2.a] carchive_test.go:704: [./testp] 4 carchive_test.go:756: SIGSEGV: segmentation violation PC=0x107b468 m=1 sigcode=0 addr=0xc73b300000000 goroutine 0 gp=0xc000002540 m=1 mp=0xc000056008 [idle]: runtime.futex(0xc000056148, 0x80, 0x0, 0x0, 0x0, 0x0) /data/golang/workdir/go/src/runtime/sys_linux_s390x.s:496 +0x28 fp=0x3ffdd4fe898 sp=0x3ffdd4fe898 pc=0x107b468 ... r8 0x10553ee r9 0x3ffbddfe4f4 r10 0x0 r11 0x3ffbddf7820 r12 0x0 r13 0xc000002540 r14 0x103c772 r15 0x3ffdd4fe898 pc 0x107b468 link 0x103c772 ----- carchive_test.go:644: got "signal: aborted (core dumped)"; expected signal "quit" or "segmentation fault"

— watchflakes

gopherbot commented 7 months ago

Found new dashboard test flakes for:

#!watchflakes
post <- pkg == "cmd/cgo/internal/testcarchive" && test == "TestSignalForwardingGo" && `got "signal: aborted \(core dumped\)"`
2024-01-24 20:57 linux-s390x-ibm go@02a09277 cmd/cgo/internal/testcarchive.TestSignalForwardingGo (log) --- FAIL: TestSignalForwardingGo (1.25s) carchive_test.go:676: go build -buildmode=c-archive -o libgo2.a ./libgo2 carchive_test.go:693: [gcc -fPIC -m64 -march=z196 -pthread -Wl,--no-gc-sections -fmessage-length=0 -ffile-prefix-map=/data/golang/workdir/tmp/go-build1882466772=/tmp/go-build -gno-record-gcc-switches -I /data/golang/workdir/tmp/carchive_test2320354622/pkg/linux_s390x_shared/testcarchive -o testp main5.c libgo2.a] carchive_test.go:704: [./testp] 4 carchive_test.go:756: SIGSEGV: segmentation violation PC=0x107b428 m=1 sigcode=0 addr=0x2e75bd00000000 goroutine 0 gp=0xc000002540 m=1 mp=0xc000056008 [idle]: runtime.futex(0xc000056148, 0x80, 0x0, 0x0, 0x0, 0x0) /data/golang/workdir/go/src/runtime/sys_linux_s390x.s:496 +0x28 fp=0x3fffd27e898 sp=0x3fffd27e898 pc=0x107b428 ... r8 0xc000056008 r9 0x0 r10 0x0 r11 0x3ffb2f77820 r12 0x0 r13 0xc000002540 r14 0x103c742 r15 0x3fffd27e898 pc 0x107b428 link 0x103c742 ----- carchive_test.go:644: got "signal: aborted (core dumped)"; expected signal "quit" or "segmentation fault"

— watchflakes

gopherbot commented 7 months ago

Found new dashboard test flakes for:

#!watchflakes
post <- pkg == "cmd/cgo/internal/testcarchive" && test == "TestSignalForwardingGo" && `got "signal: aborted \(core dumped\)"`
2024-02-13 13:54 linux-s390x-ibm-race go@e17e5308 cmd/cgo/internal/testcarchive.TestSignalForwardingGo (log) --- FAIL: TestSignalForwardingGo (1.88s) carchive_test.go:676: go build -buildmode=c-archive -o libgo2.a ./libgo2 carchive_test.go:693: [gcc -fPIC -m64 -march=z196 -pthread -Wl,--no-gc-sections -fmessage-length=0 -ffile-prefix-map=/data/golang/workdir/tmp/go-build3939770364=/tmp/go-build -gno-record-gcc-switches -I /data/golang/workdir/tmp/carchive_test970983125/pkg/linux_s390x_shared/testcarchive -o testp main5.c libgo2.a] carchive_test.go:704: [./testp] 4 carchive_test.go:756: SIGSEGV: segmentation violation PC=0x107fe28 m=1 sigcode=0 addr=0x1cda5800000000 goroutine 0 gp=0xc000002540 m=1 mp=0xc000056008 [idle]: runtime.futex(0xc000056148, 0x80, 0x0, 0x0, 0x0, 0x0) /data/golang/workdir/go/src/runtime/sys_linux_s390x.s:496 +0x29 fp=0x3ffea17ea68 sp=0x3ffea17ea68 pc=0x107fe29 ... r8 0xc000056008 r9 0x0 r10 0x0 r11 0x3ffa3077820 r12 0x0 r13 0xc000002540 r14 0x103c9a2 r15 0x3ffea17ea68 pc 0x107fe28 link 0x103c9a2 ----- carchive_test.go:644: got "signal: aborted (core dumped)"; expected signal "quit" or "segmentation fault"

— watchflakes

gopherbot commented 6 months ago

Found new dashboard test flakes for:

#!watchflakes
post <- pkg == "cmd/cgo/internal/testcarchive" && test == "TestSignalForwardingGo" && `got "signal: aborted \(core dumped\)"`
2024-03-11 17:08 linux-s390x-ibm-race go@3e1a6925 cmd/cgo/internal/testcarchive.TestSignalForwardingGo (log) --- FAIL: TestSignalForwardingGo (2.20s) carchive_test.go:676: go build -buildmode=c-archive -o libgo2.a ./libgo2 carchive_test.go:693: [gcc -fPIC -m64 -march=z196 -pthread -Wl,--no-gc-sections -fmessage-length=0 -ffile-prefix-map=/data/golang/workdir/tmp/go-build3767749296=/tmp/go-build -gno-record-gcc-switches -I /data/golang/workdir/tmp/carchive_test574387588/pkg/linux_s390x_shared/testcarchive -o testp main5.c libgo2.a] carchive_test.go:704: [./testp] 4 carchive_test.go:756: SIGSEGV: segmentation violation PC=0x107f338 m=1 sigcode=0 addr=0x12be5c00000000 goroutine 0 gp=0xc000002540 m=1 mp=0xc000056008 [idle]: runtime.futex(0xc000056148, 0x80, 0x0, 0x0, 0x0, 0x0) /data/golang/workdir/go/src/runtime/sys_linux_s390x.s:496 +0x29 fp=0x3ffd8ffe618 sp=0x3ffd8ffe618 pc=0x107f339 ... r8 0xc000056008 r9 0x0 r10 0x0 r11 0x3ffb0b77820 r12 0x0 r13 0xc000002540 r14 0x103c812 r15 0x3ffd8ffe618 pc 0x107f338 link 0x103c812 ----- carchive_test.go:644: got "signal: aborted (core dumped)"; expected signal "quit" or "segmentation fault"

— watchflakes

gopherbot commented 5 months ago

Found new dashboard test flakes for:

#!watchflakes
post <- pkg == "cmd/cgo/internal/testcarchive" && test == "TestSignalForwardingGo" && `got "signal: aborted \(core dumped\)"`
2024-03-27 16:50 linux-s390x-ibm go@abfd5781 cmd/cgo/internal/testcarchive.TestSignalForwardingGo (log) --- FAIL: TestSignalForwardingGo (1.99s) carchive_test.go:676: go build -buildmode=c-archive -o libgo2.a ./libgo2 carchive_test.go:693: [gcc -fPIC -m64 -march=z196 -pthread -Wl,--no-gc-sections -fmessage-length=0 -ffile-prefix-map=/data/golang/workdir/tmp/go-build3552686840=/tmp/go-build -gno-record-gcc-switches -I /data/golang/workdir/tmp/carchive_test1870039086/pkg/linux_s390x_shared/testcarchive -o testp main5.c libgo2.a] carchive_test.go:704: [./testp] 4 carchive_test.go:756: SIGSEGV: segmentation violation PC=0x107b618 m=1 sigcode=0 addr=0x25cdc600000000 goroutine 0 gp=0xc000002540 m=1 mp=0xc000056008 [idle]: runtime.futex(0xc000056148, 0x80, 0x0, 0x0, 0x0, 0x0) /data/golang/workdir/go/src/runtime/sys_linux_s390x.s:496 +0x28 fp=0x3ffe41ff0f8 sp=0x3ffe41ff0f8 pc=0x107b618 ... r8 0xc000056008 r9 0x0 r10 0x0 r11 0x3ff85177820 r12 0x0 r13 0xc000002540 r14 0x103c742 r15 0x3ffe41ff0f8 pc 0x107b618 link 0x103c742 ----- carchive_test.go:644: got "signal: aborted (core dumped)"; expected signal "quit" or "segmentation fault"

— watchflakes

gopherbot commented 4 months ago

Found new dashboard test flakes for:

#!watchflakes
post <- pkg == "cmd/cgo/internal/testcarchive" && test == "TestSignalForwardingGo" && `got "signal: aborted \(core dumped\)"`
2024-04-29 14:01 linux-s390x-ibm-race go@cf164403 cmd/cgo/internal/testcarchive.TestSignalForwardingGo (log) --- FAIL: TestSignalForwardingGo (1.03s) carchive_test.go:676: go build -buildmode=c-archive -o libgo2.a ./libgo2 carchive_test.go:693: [gcc -fPIC -m64 -march=z196 -pthread -Wl,--no-gc-sections -fmessage-length=0 -ffile-prefix-map=/data/golang/workdir/tmp/go-build2031635063=/tmp/go-build -gno-record-gcc-switches -I /data/golang/workdir/tmp/carchive_test2257877740/pkg/linux_s390x_shared/testcarchive -o testp main5.c libgo2.a] carchive_test.go:704: [./testp] 4 carchive_test.go:756: SIGSEGV: segmentation violation PC=0x10856b8 m=1 sigcode=0 addr=0x1586d600000000 goroutine 0 gp=0xc000002540 m=1 mp=0xc000056008 [idle]: runtime.futex(0xc000056148, 0x80, 0x0, 0x0, 0x0, 0x0) /data/golang/workdir/go/src/runtime/sys_linux_s390x.s:496 +0x28 fp=0x3ffe19fea18 sp=0x3ffe19fea18 pc=0x10856b8 ... r8 0x105914a r9 0x3ff98afe4f4 r10 0x0 r11 0x3ff98af7820 r12 0x0 r13 0xc000002540 r14 0x1040632 r15 0x3ffe19fea18 pc 0x10856b8 link 0x1040632 ----- carchive_test.go:644: got "signal: aborted (core dumped)"; expected signal "quit" or "segmentation fault"

— watchflakes