frequent TestCrashDumpsAllThreads failures

[Shengjing Zhu]

--- FAIL: TestCrashDumpsAllThreads (0.29s)
    crash_unix_test.go:149: found 1 instances of main.crashDumpsAllThreadsLoop; expected 4
    crash_unix_test.go:150: SIGQUIT: quit
        PC=0x1013c6 m=0 sigcode=0

        goroutine 21 gp=0xc000082a80 m=0 mp=0x20d0c0 [running]:
        main.crashDumpsAllThreadsLoop(...)
         /usr/lib/go-1.22/src/runtime/testdata/testprog/crashdump.go:44
        main.CrashDumpsAllThreads.gowrap1()
         /usr/lib/go-1.22/src/runtime/testdata/testprog/crashdump.go:24 +0x66 fp=0xc00003ffd8 sp=0xc00003ffc8 pc=0x1013c6
        runtime.goexit({})
         /usr/lib/go-1.22/src/runtime/asm_s390x.s:774 +0x2 fp=0xc00003ffd8 sp=0xc00003ffd8 pc=0x94262
        created by main.CrashDumpsAllThreads in goroutine 1
         /usr/lib/go-1.22/src/runtime/testdata/testprog/crashdump.go:24 +0x54

        goroutine 1 gp=0xc0000041c0 m=nil [select (no cases)]:
        runtime.gopark(0x0, 0x0, 0xa, 0x1, 0x1)
         /usr/lib/go-1.22/src/runtime/proc.go:402 +0x136 fp=0xc000092df0 sp=0xc000092dd8 pc=0x597c6
        runtime.block()
         /usr/lib/go-1.22/src/runtime/select.go:103 +0x3c fp=0xc000092e18 sp=0xc000092df0 pc=0x6f47c
        main.CrashDumpsAllThreads()
         /usr/lib/go-1.22/src/runtime/testdata/testprog/crashdump.go:38 +0x254 fp=0xc000092ec8 sp=0xc000092e18 pc=0x101344
        main.main()
         /usr/lib/go-1.22/src/runtime/testdata/testprog/main.go:34 +0x1ac fp=0xc000092f68 sp=0xc000092ec8 pc=0x1080fc
        runtime.main()
         /usr/lib/go-1.22/src/runtime/proc.go:271 +0x2f2 fp=0xc000092fd8 sp=0xc000092f68 pc=0x59242
        runtime.goexit({})
         /usr/lib/go-1.22/src/runtime/asm_s390x.s:774 +0x2 fp=0xc000092fd8 sp=0xc000092fd8 pc=0x94262

        goroutine 2 gp=0xc000004700 m=nil [force gc (idle)]:
        runtime.gopark(0x148838, 0x20c480, 0x11, 0xa, 0x1)
         /usr/lib/go-1.22/src/runtime/proc.go:402 +0x136 fp=0xc000042fb0 sp=0xc000042f98 pc=0x597c6
        runtime.goparkunlock(...)
         /usr/lib/go-1.22/src/runtime/proc.go:408
        runtime.forcegchelper()
         /usr/lib/go-1.22/src/runtime/proc.go:326 +0xd2 fp=0xc000042fd8 sp=0xc000042fb0 pc=0x595c2
        runtime.goexit({})
         /usr/lib/go-1.22/src/runtime/asm_s390x.s:774 +0x2 fp=0xc000042fd8 sp=0xc000042fd8 pc=0x94262
        created by runtime.init.5 in goroutine 1
         /usr/lib/go-1.22/src/runtime/proc.go:314 +0x30

        goroutine 3 gp=0xc000004c40 m=nil [GC sweep wait]:
        runtime.gopark(0x148838, 0x20c680, 0xc, 0x9, 0x1)
         /usr/lib/go-1.22/src/runtime/proc.go:402 +0x136 fp=0xc000043790 sp=0xc000043778 pc=0x597c6
        runtime.goparkunlock(...)
         /usr/lib/go-1.22/src/runtime/proc.go:408
        runtime.bgsweep(0xc00001a070)
         /usr/lib/go-1.22/src/runtime/mgcsweep.go:278 +0xaa fp=0xc0000437c8 sp=0xc000043790 pc=0x3efca
        runtime.gcenable.gowrap1()
         /usr/lib/go-1.22/src/runtime/mgc.go:203 +0x5e fp=0xc0000437d8 sp=0xc0000437c8 pc=0x30b7e
        runtime.goexit({})
         /usr/lib/go-1.22/src/runtime/asm_s390x.s:774 +0x2 fp=0xc0000437d8 sp=0xc0000437d8 pc=0x94262
        created by runtime.gcenable in goroutine 1
         /usr/lib/go-1.22/src/runtime/mgc.go:203 +0xa8

        goroutine 4 gp=0xc000004e00 m=nil [GC scavenge wait]:
        runtime.gopark(0x148838, 0x20c8e0, 0xd, 0xa, 0x2)
         /usr/lib/go-1.22/src/runtime/proc.go:402 +0x136 fp=0xc000043f80 sp=0xc000043f68 pc=0x597c6
        runtime.goparkunlock(...)
         /usr/lib/go-1.22/src/runtime/proc.go:408
        runtime.(*scavengerState).park(0x20c8e0)
         /usr/lib/go-1.22/src/runtime/mgcscavenge.go:425 +0x72 fp=0xc000043fa8 sp=0xc000043f80 pc=0x3c252
        runtime.bgscavenge(0xc00001a070)
         /usr/lib/go-1.22/src/runtime/mgcscavenge.go:653 +0x5a fp=0xc000043fc8 sp=0xc000043fa8 pc=0x3c90a
        runtime.gcenable.gowrap2()
         /usr/lib/go-1.22/src/runtime/mgc.go:204 +0x5e fp=0xc000043fd8 sp=0xc000043fc8 pc=0x30afe
        runtime.goexit({})
         /usr/lib/go-1.22/src/runtime/asm_s390x.s:774 +0x2 fp=0xc000043fd8 sp=0xc000043fd8 pc=0x94262
        created by runtime.gcenable in goroutine 1
         /usr/lib/go-1.22/src/runtime/mgc.go:204 +0x10e

        goroutine 17 gp=0xc000082380 m=nil [finalizer wait]:
        runtime.gopark(0x1485b0, 0x279f38, 0x10, 0xa, 0x1)
         /usr/lib/go-1.22/src/runtime/proc.go:402 +0x136 fp=0xc000042718 sp=0xc000042700 pc=0x597c6
        runtime.runfinq()
         /usr/lib/go-1.22/src/runtime/mfinal.go:194 +0x13a fp=0xc0000427d8 sp=0xc000042718 pc=0x2f68a
        runtime.goexit({})
         /usr/lib/go-1.22/src/runtime/asm_s390x.s:774 +0x2 fp=0xc0000427d8 sp=0xc0000427d8 pc=0x94262
        created by runtime.createfing in goroutine 1
         /usr/lib/go-1.22/src/runtime/mfinal.go:164 +0x64

        goroutine 18 gp=0xc000082540 m=5 mp=0xc000080008 [running]:
         goroutine running on other thread; stack unavailable
        created by main.CrashDumpsAllThreads in goroutine 1
         /usr/lib/go-1.22/src/runtime/testdata/testprog/crashdump.go:24 +0x54

        goroutine 19 gp=0xc000082700 m=2 mp=0xc000015008 [running]:
         goroutine running on other thread; stack unavailable
        created by main.CrashDumpsAllThreads in goroutine 1
         /usr/lib/go-1.22/src/runtime/testdata/testprog/crashdump.go:24 +0x54

        goroutine 20 gp=0xc0000828c0 m=3 mp=0xc000015808 [running]:
         goroutine running on other thread; stack unavailable
        created by main.CrashDumpsAllThreads in goroutine 1
         /usr/lib/go-1.22/src/runtime/testdata/testprog/crashdump.go:24 +0x54

        r0 0x166e406 r1 0x20d330
        r2 0x0 r3 0xc000082a80
        r4 0x20d0c0 r5 0x0
        r6 0x101360 r7 0xc00003f800
        r8 0x5bd20 r9 0x3ff867fe4d0
        r10 0x0 r11 0x1c28f5c28f4a669d
        r12 0xc0000a4090 r13 0xc000082a80
        r14 0x1013be r15 0xc00003ffc8
        pc 0x1013c6 link 0x1013be

        -----

        SIGQUIT: quit
        PC=0x950da m=1 sigcode=0

        goroutine 0 gp=0xc000004540 m=1 mp=0xc000014808 [idle]:
        runtime.futex(0x20d9c0, 0x80, 0x0, 0xc00002bee0, 0x0, 0x0)
         /usr/lib/go-1.22/src/runtime/sys_linux_s390x.s:497 +0x2a fp=0xc00002bea8 sp=0xc00002bea8 pc=0x950da
        runtime.futexsleep(0x20d9c0, 0x0, 0xdf8475800)
         /usr/lib/go-1.22/src/runtime/os_linux.go:75 +0xe8 fp=0xc00002bef0 sp=0xc00002bea8 pc=0x51ae8
        runtime.notetsleep_internal(0x20d9c0, 0xdf8475800)
         /usr/lib/go-1.22/src/runtime/lock_futex.go:212 +0xec fp=0xc00002bf28 sp=0xc00002bef0 pc=0x1e7ac
        runtime.notetsleep(0x20d9c0, 0xdf8475800)
         /usr/lib/go-1.22/src/runtime/lock_futex.go:235 +0x5c fp=0xc00002bf48 sp=0xc00002bf28 pc=0x1e92c
        runtime.sysmon()
         /usr/lib/go-1.22/src/runtime/proc.go:6001 +0x26e fp=0xc00002bfb8 sp=0xc00002bf48 pc=0x6951e
        runtime.mstart1()
         /usr/lib/go-1.22/src/runtime/proc.go:1729 +0xb2 fp=0xc00002bfd8 sp=0xc00002bfb8 pc=0x5cf72
        runtime.mstart0()
         /usr/lib/go-1.22/src/runtime/proc.go:1686 +0x8c fp=0xc00002bff8 sp=0xc00002bfd8 pc=0x5ce9c
        runtime.mstart()
         /usr/lib/go-1.22/src/runtime/asm_s390x.s:174 +0x18 fp=0xc00002c000 sp=0xc00002bff8 pc=0x91f08
        r0 0xc00002bee0 r1 0xee
        r2 0xfffffffffffffffc r3 0x80
        r4 0x0 r5 0xc00002bee0
        r6 0x0 r7 0x0
        r8 0x1e722 r9 0x3ff867fe4d0
        r10 0x3c0000000 r11 0x0
        r12 0x0 r13 0xc000004540
        r14 0x51ae8 r15 0xc00002bea8
        pc 0x950da link 0x51ae8

        -----

FAIL
FAIL runtime 40.102s

[Shengjing Zhu (zhsj)]

upstream issue https://github.com/golang/go/issues/64650

[Launchpad Janitor (janitor)]

This bug was fixed in the package golang-1.22 - 1.22.2-2

---------------
golang-1.22 (1.22.2-2) unstable; urgency=medium

  * Team upload
  * Skip flaky TestCrashDumpsAllThreads on s390x (LP: #2061742)
    https://github.com/golang/go/issues/64650

 -- Shengjing Zhu <email address hidden> Tue, 16 Apr 2024 16:13:31 +0800

[Jeremy Bícha (jbicha)]

I'm reopening this bug as a hint for why these tests are being ignored. Perhaps there is a real bug on s390x.

[Shengjing Zhu (zhsj)]

It not only happens on s390x, but also on amd64 and arm64 now for todays 1.22.4-1 updates.

https://buildd.debian.org/status/fetch.php?pkg=golang-1.22&arch=amd64&ver=1.22.4-1&stamp=1717546879&raw=0
https://buildd.debian.org/status/fetch.php?pkg=golang-1.22&arch=arm64&ver=1.22.4-1&stamp=1717547328&raw=0