runtime: TestLockOSThreadVgetrandom failures #76493
Description
#!watchflakes
default <- pkg == "runtime" && test == "TestLockOSThreadVgetrandom"
Issue created automatically to collect these failures.
Example (log):
=== RUN TestLockOSThreadVgetrandom
exec.go:213: test timed out while running command: /home/swarming/.swarming/w/ir/x/t/go-build1545980624/testprog.exe LockOSThreadVgetrandom
proc_test.go:1033: /home/swarming/.swarming/w/ir/x/t/go-build1545980624/testprog.exe LockOSThreadVgetrandom: exit status 2
proc_test.go:1036: want "OK\n", got "SIGQUIT: quit\nPC=0x4c1121 m=0 sigcode=0\n\ngoroutine 0 gp=0x74fec0 m=0 mp=0x750c20 [idle]:\nruntime.futex(0x750d70, 0x80, 0x0, 0x0, 0x0, 0x0)\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/sys_linux_amd64.s:557 +0x21 fp=0x7ffd5a419f40 sp=0x7ffd5a419f38 pc=0x4c1121\nruntime.futexsleep(0x7ffd5a419fb8?, 0x487696?, 0xc000070008?)\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/os_linux.go:73 +0x30 fp=0x7ffd5a419f90 sp=0x7ffd5a419f40 pc=0x47b970\nruntime.notesleep(0x750d70)\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/lock_futex.go:47 +0x87 fp=0x7ffd5a419fc8 sp=0x7ffd5a419f90 pc=0x44ef67\nruntime.mPark(...)\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/proc.go:1969\nruntime.mexit(0x5f?)\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/proc.go:2003 +0x256 fp=0x7ffd5a419ff8 sp=0x7ffd5a419fc8 pc=0x4859f6\nruntime.mstart0()\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/proc.go:1899 +0x7f fp=0x7ffd5a41a028 sp=0x7ffd5a419ff8 pc=0x48561f\nruntime.mstart()\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/asm_amd64.s:411 +0x5 fp=0x7ffd5a41a030 sp=0x7ffd5a41a028 pc=0x4bd2c5\n\ngoroutine 1 gp=0xc0000061c0 m=nil [runnable]:\nruntime.gopark(0x10?, 0xc0003d3008?, 0x30?, 0x43?, 0xc000091e28?)\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/proc.go:464 +0xce fp=0xc000091dc0 sp=0xc000091da0 pc=0x4b708e\nruntime.chanrecv(0xc0001820e0, 0x0, 0x1)\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/chan.go:667 +0x44f fp=0xc000091e38 sp=0xc000091dc0 pc=0x448ecf\nruntime.chanrecv1(0xc0001dada0?, 0x64?)\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/chan.go:509 +0x12 fp=0xc000091e60 sp=0xc000091e38 pc=0x448a72\nmain.LockOSThreadVgetrandom()\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/testdata/testprog/lockosthread_linux.go:39 +0x87 fp=0xc000091e98 sp=0xc000091e60 pc=0x5a3427\nmain.main()\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/testdata/testprog/main.go:34 +0x22c fp=0xc000091f48 sp=0xc000091e98 pc=0x5a38ac\nruntime.main()\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/proc.go:289 +0x2d5 fp=0xc000091fe0 sp=0xc000091f48 pc=0x482015\nruntime.goexit({})\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/asm_amd64.s:1709 +0x1 fp=0xc000091fe8 sp=0xc000091fe0 pc=0x4befa1\n\ngoroutine 2 gp=0xc000006c40 m=nil [force gc (idle)]:\nruntime.gopark(0x73a940?, 0x750c20?, 0x0?, 0x0?, 0x0?)\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/proc.go:464 +0xce fp=0xc00007c7a8 sp=0xc00007c788 pc=0x4b708e\nruntime.goparkunlock(...)\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/proc.go:470\nruntime.forcegchelper()\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/proc.go:377 +0xb3 fp=0xc00007c7e0 sp=0xc00007c7a8 pc=0x482333\nruntime.goexit({})\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/asm_amd64.s:1709 +0x1 fp=0xc00007c7e8 sp=0xc00007c7e0 pc=0x4befa1\ncreated by runtime.init.7 in goroutine 1\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/proc.go:365 +0x1a\n\ngoroutine 18 gp=0xc000102380 m=nil [GC sweep wait]:\nruntime.gopark(0x0?, 0x0?, 0x0?, 0x0?, 0x0?)\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/proc.go:464 +0xce fp=0xc00008cf80 sp=0xc00008cf60 pc=0x4b708e\nruntime.goparkunlock(...)\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/proc.go:470\nruntime.bgsweep(0xc000110000)\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/mgcsweep.go:279 +0x94 fp=0xc00008cfc8 sp=0xc00008cf80 pc=0x46a034\nruntime.gcenable.gowrap1()\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/mgc.go:212 +0x17 fp=0xc00008cfe0 sp=0xc00008cfc8 pc=0x45b497\nruntime.goexit({})\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/asm_amd64.s:1709 +0x1 fp=0xc00008cfe8 sp=0xc00008cfe0 pc=0x4befa1\ncreated by runtime.gcenable in goroutine 1\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/mgc.go:212 +0x66\n\ngoroutine 19 gp=0xc000102540 m=nil [GC scavenge wait]:\nruntime.gopark(0xc000110000?, 0x631888?, 0x1?, 0x0?, 0xc000102540?)\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/proc.go:464 +0xce fp=0xc000092f78 sp=0xc000092f58 pc=0x4b708e\nruntime.goparkunlock(...)\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/proc.go:470\nruntime.(*scavengerState).park(0x74fbc0)\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/mgcscavenge.go:425 +0x49 fp=0xc000092fa8 sp=0xc000092f78 pc=0x467b49\nruntime.bgscavenge(0xc000110000)\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/mgcscavenge.go:653 +0x3c fp=0xc000092fc8 sp=0xc000092fa8 pc=0x4680dc\nruntime.gcenable.gowrap2()\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/mgc.go:213 +0x17 fp=0xc000092fe0 sp=0xc000092fc8 pc=0x45b457\nruntime.goexit({})\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/asm_amd64.s:1709 +0x1 fp=0xc000092fe8 sp=0xc000092fe0 pc=0x4befa1\ncreated by runtime.gcenable in goroutine 1\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/mgc.go:213 +0xa5\n\ngoroutine 34 gp=0xc000180000 m=nil [GOMAXPROCS updater (idle)]:\nruntime.gopark(0x0?, 0x0?, 0x0?, 0x0?, 0x0?)\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/proc.go:464 +0xce fp=0xc000078788 sp=0xc000078768 pc=0x4b708e\nruntime.goparkunlock(...)\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/proc.go:470\nruntime.updateMaxProcsGoroutine()\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/proc.go:6704 +0xe7 fp=0xc0000787e0 sp=0xc000078788 pc=0x4908a7\nruntime.goexit({})\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/asm_amd64.s:1709 +0x1 fp=0xc0000787e8 sp=0xc0000787e0 pc=0x4befa1\ncreated by runtime.defaultGOMAXPROCSUpdateEnable in goroutine 1\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/proc.go:6692 +0x37\n\ngoroutine 35 gp=0xc000180540 m=nil [finalizer wait]:\nruntime.gopark(0x0?, 0x0?, 0x0?, 0x0?, 0x0?)\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/proc.go:464 +0xce fp=0xc000093e20 sp=0xc000093e00 pc=0x4b708e\nruntime.runFinalizers()\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/mfinal.go:210 +0x13b fp=0xc000093fe0 sp=0xc000093e20 pc=0x45a41b\nruntime.goexit({})\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/asm_amd64.s:1709 +0x1 fp=0xc000093fe8 sp=0xc000093fe0 pc=0x4befa1\ncreated by runtime.createfing in goroutine 1\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/mfinal.go:172 +0x3d\n\ngoroutine 820 gp=0xc000180700 m=nil [runnable, locked to thread]:\nruntime.asyncPreempt2()\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/preempt.go:319 +0x14 fp=0xc00033cec0 sp=0xc00033cea0 pc=0x4808d4\nruntime.asyncPreempt()\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/preempt_amd64.s:108 +0x21b fp=0xc00033cf48 sp=0xc00033cec0 pc=0x4c005b\nmain.LockOSThreadVgetrandom.func1()\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/testdata/testprog/lockosthread_linux.go:62 +0xc1 fp=0xc00033cfe0 sp=0xc00033cf48 pc=0x5a35a1\nruntime.goexit({})\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/asm_amd64.s:1709 +0x1 fp=0xc00033cfe8 sp=0xc00033cfe0 pc=0x4befa1\ncreated by main.LockOSThreadVgetrandom in goroutine 1\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/testdata/testprog/lockosthread_linux.go:40 +0x65\n\ngoroutine 804 gp=0xc000180a80 m=nil [runnable, locked to thread]:\nruntime.asyncPreempt2()\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/preempt.go:319 +0x14 fp=0xc0001b9ec0 sp=0xc0001b9ea0 pc=0x4808d4\nruntime.asyncPreempt()\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/preempt_amd64.s:108 +0x21b fp=0xc0001b9f48 sp=0xc0001b9ec0 pc=0x4c005b\nmain.LockOSThreadVgetrandom.func1()\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/testdata/testprog/lockosthread_linux.go:62 +0xc1 fp=0xc0001b9fe0 sp=0xc0001b9f48 pc=0x5a35a1\nruntime.goexit({})\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/asm_amd64.s:1709 +0x1 fp=0xc0001b9fe8 sp=0xc0001b9fe0 pc=0x4befa1\ncreated by main.LockOSThreadVgetrandom in goroutine 1\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/testdata/testprog/lockosthread_linux.go:40 +0x65\n\ngoroutine 798 gp=0xc000181500 m=727 mp=0xc0000e1808 [running, locked to thread]:\n\tgoroutine running on other thread; stack unavailable\ncreated by main.LockOSThreadVgetrandom in goroutine 1\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/testdata/testprog/lockosthread_linux.go:40 +0x65\n\ngoroutine 778 gp=0xc000181880 m=nil [runnable, locked to thread]:\nruntime.asyncPreempt2()\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/preempt.go:319 +0x14 fp=0xc0003036c0 sp=0xc0003036a0 pc=0x4808d4\nruntime.asyncPreempt()\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/preempt_amd64.s:108 +0x21b fp=0xc000303748 sp=0xc0003036c0 pc=0x4c005b\nmain.LockOSThreadVgetrandom.func1()\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/testdata/testprog/lockosthread_linux.go:62 +0xc1 fp=0xc0003037e0 sp=0xc000303748 pc=0x5a35a1\nruntime.goexit({})\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/asm_amd64.s:1709 +0x1 fp=0xc0003037e8 sp=0xc0003037e0 pc=0x4befa1\ncreated by main.LockOSThreadVgetrandom in goroutine 1\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/testdata/testprog/lockosthread_linux.go:40 +0x65\n\ngoroutine 783 gp=0xc0001e6000 m=nil [runnable, locked to thread]:\nruntime.asyncPreempt2()\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/preempt.go:319 +0x14 fp=0xc0001b76c0 sp=0xc0001b76a0 pc=0x4808d4\nruntime.asyncPreempt()\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/preempt_amd64.s:108 +0x21b fp=0xc0001b7748 sp=0xc0001b76c0 pc=0x4c005b\nmain.LockOSThreadVgetrandom.func1()\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/testdata/testprog/lockosthread_linux.go:61 +0xcd fp=0xc0001b77e0 sp=0xc0001b7748 pc=0x5a35ad\nruntime.goexit({})\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/asm_amd64.s:1709 +0x1 fp=0xc0001b77e8 sp=0xc0001b77e0 pc=0x4befa1\ncreated by main.LockOSThreadVgetrandom in goroutine 1\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/testdata/testprog/lockosthread_linux.go:40 +0x65\n\ngoroutine 834 gp=0xc0001e61c0 m=nil [runnable, locked to thread]:\nruntime.asyncPreempt2()\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/preempt.go:319 +0x14 fp=0xc0001b7ec0 sp=0xc0001b7ea0 pc=0x4808d4\nruntime.asyncPreempt()\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/preempt_amd64.s:108 +0x21b fp=0xc0001b7f48 sp=0xc0001b7ec0 pc=0x4c005b\nmain.LockOSThreadVgetrandom.func1()\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/testdata/testprog/lockosthread_linux.go:62 +0xc1 fp=0xc0001b7fe0 sp=0xc0001b7f48 pc=0x5a35a1\nruntime.goexit({})\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/asm_amd64.s:1709 +0x1 fp=0xc0001b7fe8 sp=0xc0001b7fe0 pc=0x4befa1\ncreated by main.LockOSThreadVgetrandom in goroutine 1\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/testdata/testprog/lockosthread_linux.go:40 +0x65\n\ngoroutine 475 gp=0xc0001e68c0 m=nil [runnable, locked to thread]:\nruntime.asyncPreempt2()\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/preempt.go:319 +0x14 fp=0xc0001edec0 sp=0xc0001edea0 pc=0x4808d4\nruntime.asyncPreempt()\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/preempt_amd64.s:108 +0x21b fp=0xc0001edf48 sp=0xc0001edec0 pc=0x4c005b\nmain.LockOSThreadVgetrandom.func1()\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/testdata/testprog/lockosthread_linux.go:61 +0xbc fp=0xc0001edfe0 sp=0xc0001edf48 pc=0x5a359c\nruntime.goexit({})\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/asm_amd64.s:1709 +0x1 fp=0xc0001edfe8 sp=0xc0001edfe0 pc=0x4befa1\ncreated by main.LockOSThreadVgetrandom in goroutine 1\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/testdata/testprog/lockosthread_linux.go:40 +0x65\n\ngoroutine 787 gp=0xc0001e6a80 m=nil [runnable, locked to thread]:\nruntime.asyncPreempt2()\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/preempt.go:319 +0x14 fp=0xc0001ee6c0 sp=0xc0001ee6a0 pc=0x4808d4\nruntime.asyncPreempt()\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/preempt_amd64.s:108 +0x21b fp=0xc0001ee748 sp=0xc0001ee6c0 pc=0x4c005b\nmain.LockOSThreadVgetrandom.func1()\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/testdata/testprog/lockosthread_linux.go:62 +0xc1 fp=0xc0001ee7e0 sp=0xc0001ee748 pc=0x5a35a1\nruntime.goexit({})\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/asm_amd64.s:1709 +0x1 fp=0xc0001ee7e8 sp=0xc0001ee7e0 pc=0x4befa1\ncreated by main.LockOSThreadVgetrandom in goroutine 1\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/testdata/testprog/lockosthread_linux.go:40 +0x65\n\ngoroutine 779 gp=0xc0001e6e00 m=723 mp=0xc0000e1008 [running, locked to thread]:\n\tgoroutine running on other thread; stack unavailable\ncreated by main.LockOSThreadVgetrandom in goroutine 1\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/testdata/testprog/lockosthread_linux.go:40 +0x65\n\ngoroutine 836 gp=0xc0001e76c0 m=nil [runnable, locked to thread]:\nruntime.asyncPreempt2()\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/preempt.go:319 +0x14 fp=0xc0001b66c0 sp=0xc0001b66a0 pc=0x4808d4\nruntime.asyncPreempt()\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/preempt_amd64.s:108 +0x21b fp=0xc0001b6748 sp=0xc0001b66c0 pc=0x4c005b\nmain.LockOSThreadVgetrandom.func1()\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/testdata/testprog/lockosthread_linux.go:61 +0xbc fp=0xc0001b67e0 sp=0xc0001b6748 pc=0x5a359c\nruntime.goexit({})\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/asm_amd64.s:1709 +0x1 fp=0xc0001b67e8 sp=0xc0001b67e0 pc=0x4befa1\ncreated by main.LockOSThreadVgetrandom in goroutine 1\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/testdata/testprog/lockosthread_linux.go:40 +0x65\n\ngoroutine 758 gp=0xc0001e7a40 m=nil [runnable, locked to thread]:\nruntime.asyncPreempt2()\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/preempt.go:319 +0x14 fp=0xc0000c16c0 sp=0xc0000c16a0 pc=0x4808d4\nruntime.asyncPreempt()\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/preempt_amd64.s:108 +0x21b fp=0xc0000c1748 sp=0xc0000c16c0 pc=0x4c005b\nmain.LockOSThreadVgetrandom.func1()\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/testdata/testprog/lockosthread_linux.go:62 +0xc1 fp=0xc0000c17e0 sp=0xc0000c1748 pc=0x5a35a1\nruntime.goexit({})\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/asm_amd64.s:1709 +0x1 fp=0xc0000c17e8 sp=0xc0000c17e0 pc=0x4befa1\ncreated by main.LockOSThreadVgetrandom in goroutine 1\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/testdata/testprog/lockosthread_linux.go:40 +0x65\n\ngoroutine 707 gp=0xc0001f2000 m=nil [runnable, locked to thread]:\nruntime.asyncPreempt2()\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/preempt.go:319 +0x14 fp=0xc0004ee6c0 sp=0xc0004ee6a0 pc=0x4808d4\nruntime.asyncPreempt()\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/preempt_amd64.s:108 +0x21b fp=0xc0004ee748 sp=0xc0004ee6c0 pc=0x4c005b\nmain.LockOSThreadVgetrandom.func1()\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/testdata/testprog/lockosthread_linux.go:62 +0xc1 fp=0xc0004ee7e0 sp=0xc0004ee748 pc=0x5a35a1\nruntime.goexit({})\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/asm_amd64.s:1709 +0x1 fp=0xc0004ee7e8 sp=0xc0004ee7e0 pc=0x4befa1\ncreated by main.LockOSThreadVgetrandom in goroutine 1\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/testdata/testprog/lockosthread_linux.go:40 +0x65\n\ngoroutine 427 gp=0xc0001f21c0 m=nil [runnable, locked to thread]:\nruntime.asyncPreempt2()\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/preempt.go:319 +0x14 fp=0xc0001f86c0 sp=0xc0001f86a0 pc=0x4808d4\nruntime.asyncPreempt()\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/preempt_amd64.s:108 +0x21b fp=0xc0001f8748 sp=0xc0001f86c0 pc=0x4c005b\nmain.LockOSThreadVgetrandom.func1()\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/testdata/testprog/lockosthread_linux.go:62 +0xc1 fp=0xc0001f87e0 sp=0xc0001f8748 pc=0x5a35a1\nruntime.goexit({})\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/asm_amd64.s:1709 +0x1 fp=0xc0001f87e8 sp=0xc0001f87e0 pc=0x4befa1\ncreated by main.LockOSThreadVgetrandom in goroutine 1\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/testdata/testprog/lockosthread_linux.go:40 +0x65\n\ngoroutine 797 gp=0xc0001f2700 m=nil [runnable, locked to thread]:\nruntime.asyncPreempt2()\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/preempt.go:319 +0x14 fp=0xc0001f9ec0 sp=0xc0001f9ea0 pc=0x4808d4\nruntime.asyncPreempt()\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/preempt_amd64.s:108 +0x21b fp=0xc0001f9f48 sp=0xc0001f9ec0 pc=0x4c005b\nmain.LockOSThreadVgetrandom.func1()\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/testdata/testprog/lockosthread_linux.go:62 +0xc1 fp=0xc0001f9fe0 sp=0xc0001f9f48 pc=0x5a35a1\nruntime.goexit({})\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/asm_amd64.s:1709 +0x1 fp=0xc0001f9fe8 sp=0xc0001f9fe0 pc=0x4befa1\ncreated by main.LockOSThreadVgetrandom in goroutine 1\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/testdata/testprog/lockosthread_linux.go:40 +0x65\n\ngoroutine 666 gp=0xc0001f2fc0 m=nil [runnable, locked to thread]:\nruntime.deferreturn()\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/panic.go:653 +0x77 fp=0xc0001f4748 sp=0xc0001f4740 pc=0x47d8b7\nmain.LockOSThreadVgetrandom.func1()\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/testdata/testprog/lockosthread_linux.go:64 +0xe5 fp=0xc0001f47e0 sp=0xc0001f4748 pc=0x5a35c5\nruntime.goexit({})\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/asm_amd64.s:1709 +0x1 fp=0xc0001f47e8 sp=0xc0001f47e0 pc=0x4befa1\ncreated by main.LockOSThreadVgetrandom in goroutine 1\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/testdata/testprog/lockosthread_linux.go:40 +0x65\n\ngoroutine 477 gp=0xc0001f3180 m=nil [runnable, locked to thread]:\nruntime.asyncPreempt2()\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/preempt.go:319 +0x14 fp=0xc0001f4ec0 sp=0xc0001f4ea0 pc=0x4808d4\nruntime.asyncPreempt()\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/preempt_amd64.s:108 +0x21b fp=0xc0001f4f48 sp=0xc0001f4ec0 pc=0x4c005b\nmain.LockOSThreadVgetrandom.func1()\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/testdata/testprog/lockosthread_linux.go:61 +0xcd fp=0xc0001f4fe0 sp=0xc0001f4f48 pc=0x5a35ad\nruntime.goexit({})\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/asm_amd64.s:1709 +0x1 fp=0xc0001f4fe8 sp=0xc0001f4fe0 pc=0x4befa1\ncreated by main.LockOSThreadVgetrandom in goroutine 1\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/testdata/testprog/lockosthread_linux.go:40 +0x65\n\ngoroutine 476 gp=0xc0001f3340 m=nil [runnable, locked to thread]:\nruntime.asyncPreempt2()\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/preempt.go:319 +0x14 fp=0xc0001f56c0 sp=0xc0001f56a0 pc=0x4808d4\nruntime.asyncPreempt()\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/preempt_amd64.s:108 +0x21b fp=0xc0001f5748 sp=0xc0001f56c0 pc=0x4c005b\nmain.LockOSThreadVgetrandom.func1()\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/testdata/testprog/lockosthread_linux.go:62 +0xc1 fp=0xc0001f57e0 sp=0xc0001f5748 pc=0x5a35a1\nruntime.goexit({})\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/asm_amd64.s:1709 +0x1 fp=0xc0001f57e8 sp=0xc0001f57e0 pc=0x4befa1\ncreated by main.LockOSThreadVgetrandom in goroutine 1\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/testdata/testprog/lockosthread_linux.go:40 +0x65\n\ngoroutine 740 gp=0xc0001f36c0 m=717 mp=0xc000521808 [running, locked to thread]:\n\tgoroutine running on other thread; stack unavailable\ncreated by main.LockOSThreadVgetrandom in goroutine 1\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/testdata/testprog/lockosthread_linux.go:40 +0x65\n\ngoroutine 767 gp=0xc0001fc540 m=nil [runnable, locked to thread]:\nruntime.asyncPreempt2()\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/preempt.go:319 +0x14 fp=0xc0008e5ec0 sp=0xc0008e5ea0 pc=0x4808d4\nruntime.asyncPreempt()\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/preempt_amd64.s:108 +0x21b fp=0xc0008e5f48 sp=0xc0008e5ec0 pc=0x4c005b\nmain.LockOSThreadVgetrandom.func1()\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/testdata/testprog/lockosthread_linux.go:61 +0xbc fp=0xc0008e5fe0 sp=0xc0008e5f48 pc=0x5a359c\nruntime.goexit({})\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/asm_amd64.s:1709 +0x1 fp=0xc0008e5fe8 sp=0xc0008e5fe0 pc=0x4befa1\ncreated by main.LockOSThreadVgetrandom in goroutine 1\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/testdata/testprog/lockosthread_linux.go:40 +0x65\n\ngoroutine 700 gp=0xc0001fcfc0 m=nil [runnable, locked to thread]:\nruntime.asyncPreempt2()\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/preempt.go:319 +0x14 fp=0xc0001f5ec0 sp=0xc0001f5ea0 pc=0x4808d4\nruntime.asyncPreempt()\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/preempt_amd64.s:108 +0x21b fp=0xc0001f5f48 sp=0xc0001f5ec0 pc=0x4c005b\nmain.LockOSThreadVgetrandom.func1()\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/testdata/testprog/lockosthread_linux.go:61 +0xbc fp=0xc0001f5fe0 sp=0xc0001f5f48 pc=0x5a359c\nruntime.goexit({})\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/asm_amd64.s:1709 +0x1 fp=0xc0001f5fe8 sp=0xc0001f5fe0 pc=0x4befa1\ncreated by main.LockOSThreadVgetrandom in goroutine 1\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/testdata/testprog/lockosthread_linux.go:40 +0x65\n\ngoroutine 675 gp=0xc0001fd880 m=671 mp=0xc000793008 [running, locked to thread]:\n\tgoroutine running on other thread; stack unavailable\ncreated by main.LockOSThreadVgetrandom in goroutine 1\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/testdata/testprog/lockosthread_linux.go:40 +0x65\n\ngoroutine 781 gp=0xc0001fdc00 m=nil [runnable, locked to thread]:\nruntime.asyncPreempt2()\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/preempt.go:319 +0x14 fp=0xc00030c6c0 sp=0xc00030c6a0 pc=0x4808d4\nruntime.asyncPreempt()\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/preempt_amd64.s:108 +0x21b fp=0xc00030c748 sp=0xc00030c6c0 pc=0x4c005b\nmain.LockOSThreadVgetrandom.func1()\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/testdata/testprog/lockosthread_linux.go:62 +0xc1 fp=0xc00030c7e0 sp=0xc00030c748 pc=0x5a35a1\nruntime.goexit({})\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/asm_amd64.s:1709 +0x1 fp=0xc00030c7e8 sp=0xc00030c7e0 pc=0x4befa1\ncreated by main.LockOSThreadVgetrandom in goroutine 1\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/testdata/testprog/lockosthread_linux.go:40 +0x65\n\ngoroutine 765 gp=0xc0003101c0 m=nil [runnable, locked to thread]:\nruntime.asyncPreempt2()\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/preempt.go:319 +0x14 fp=0xc0008e4ec0 sp=0xc0008e4ea0 pc=0x4808d4\nruntime.asyncPreempt()\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/preempt_amd64.s:108 +0x21b fp=0xc0008e4f48 sp=0xc0008e4ec0 pc=0x4c005b\nmain.LockOSThreadVgetrandom.func1()\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/testdata/testprog/lockosthread_linux.go:62 +0xc1 fp=0xc0008e4fe0 sp=0xc0008e4f48 pc=0x5a35a1\nruntime.goexit({})\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/asm_amd64.s:1709 +0x1 fp=0xc0008e4fe8 sp=0xc0008e4fe0 pc=0x4befa1\ncreated by main.LockOSThreadVgetrandom in goroutine 1\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/testdata/testprog/lockosthread_linux.go:40 +0x65\n\ngoroutine 738 gp=0xc000310380 m=nil [runnable, locked to thread]:\nruntime.asyncPreempt2()\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/preempt.go:319 +0x14 fp=0xc00030dec0 sp=0xc00030dea0 pc=0x4808d4\nruntime.asyncPreempt()\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/preempt_amd64.s:108 +0x21b fp=0xc00030df48 sp=0xc00030dec0 pc=0x4c005b\nmain.LockOSThreadVgetrandom.func1()\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/testdata/testprog/lockosthread_linux.go:62 +0xc1 fp=0xc00030dfe0 sp=0xc00030df48 pc=0x5a35a1\nruntime.goexit({})\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/asm_amd64.s:1709 +0x1 fp=0xc00030dfe8 sp=0xc00030dfe0 pc=0x4befa1\ncreated by main.LockOSThreadVgetrandom in goroutine 1\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/testdata/testprog/lockosthread_linux.go:40 +0x65\n\ngoroutine 528 gp=0xc000310a80 m=nil [runnable, locked to thread]:\nruntime.asyncPreempt2()\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/preempt.go:319 +0x14 fp=0xc0006f7ec0 sp=0xc0006f7ea0 pc=0x4808d4\nruntime.asyncPreempt()\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/preempt_amd64.s:108 +0x21b fp=0xc0006f7f48 sp=0xc0006f7ec0 pc=0x4c005b\nmain.LockOSThreadVgetrandom.func1()\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/testdata/testprog/lockosthread_linux.go:62 +0xc1 fp=0xc0006f7fe0 sp=0xc0006f7f48 pc=0x5a35a1\nruntime.goexit({})\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/asm_amd64.s:1709 +0x1 fp=0xc0006f7fe8 sp=0xc0006f7fe0 pc=0x4befa1\ncreated by main.LockOSThreadVgetrandom in goroutine 1\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/testdata/testprog/lockosthread_linux.go:40 +0x65\n\ngoroutine 481 gp=0xc000310fc0 m=nil [runnable, locked to thread]:\nruntime.asyncPreempt2()\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/preempt.go:319 +0x14 fp=0xc0003096c0 sp=0xc0003096a0 pc=0x4808d4\nruntime.asyncPreempt()\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/preempt_amd64.s:108 +0x21b fp=0xc000309748 sp=0xc0003096c0 pc=0x4c005b\nmain.LockOSThreadVgetrandom.func1()\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/testdata/testprog/lockosthread_linux.go:62 +0xc1 fp=0xc0003097e0 sp=0xc000309748 pc=0x5a35a1\nruntime.goexit({})\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/asm_amd64.s:1709 +0x1 fp=0xc0003097e8 sp=0xc0003097e0 pc=0x4befa1\ncreated by main.LockOSThreadVgetrandom in goroutine 1\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/testdata/testprog/lockosthread_linux.go:40 +0x65\n\ngoroutine 791 gp=0xc000311180 m=nil [runnable, locked to thread]:\nruntime.asyncPreempt2()\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/preempt.go:319 +0x14 fp=0xc000309ec0 sp=0xc000309ea0 pc=0x4808d4\nruntime.asyncPreempt()\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/preempt_amd64.s:108 +0x21b fp=0xc000309f48 sp=0xc000309ec0 pc=0x4c005b\nmain.LockOSThreadVgetrandom.func1()\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/testdata/testprog/lockosthread_linux.go:62 +0xc1 fp=0xc000309fe0 sp=0xc000309f48 pc=0x5a35a1\nruntime.goexit({})\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/asm_amd64.s:1709 +0x1 fp=0xc000309fe8 sp=0xc000309fe0 pc=0x4befa1\ncreated by main.LockOSThreadVgetrandom in goroutine 1\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/testdata/testprog/lockosthread_linux.go:40 +0x65\n\ngoroutine 676 gp=0xc000311340 m=680 mp=0xc000708008 [running, locked to thread]:\n\tgoroutine running on other thread; stack unavailable\ncreated by main.LockOSThreadVgetrandom in goroutine 1\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/testdata/testprog/lockosthread_linux.go:40 +0x65\n\ngoroutine 462 gp=0xc000311500 m=nil [runnable, locked to thread]:\nruntime.asyncPreempt2()\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/preempt.go:319 +0x14 fp=0xc00030aec0 sp=0xc00030aea0 pc=0x4808d4\nruntime.asyncPreempt()\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/preempt_amd64.s:108 +0x21b fp=0xc00030af48 sp=0xc00030aec0 pc=0x4c005b\nmain.LockOSThreadVgetrandom.func1()\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/testdata/testprog/lockosthread_linux.go:62 +0xc1 fp=0xc00030afe0 sp=0xc00030af48 pc=0x5a35a1\nruntime.goexit({})\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/asm_amd64.s:1709 +0x1 fp=0xc00030afe8 sp=0xc00030afe0 pc=0x4befa1\ncreated by main.LockOSThreadVgetrandom in goroutine 1\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/testdata/testprog/lockosthread_linux.go:40 +0x65\n\ngoroutine 757 gp=0xc0003116c0 m=nil [runnable, locked to thread]:\nruntime.asyncPreempt2()\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/preempt.go:319 +0x14 fp=0xc0000c0ec0 sp=0xc0000c0ea0 pc=0x4808d4\nruntime.asyncPreempt()\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/preempt_amd64.s:108 +0x21b fp=0xc0000c0f48 sp=0xc0000c0ec0 pc=0x4c005b\nmain.LockOSThreadVgetrandom.func1()\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/testdata/testprog/lockosthread_linux.go:62 +0xc1 fp=0xc0000c0fe0 sp=0xc0000c0f48 pc=0x5a35a1\nruntime.goexit({})\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/asm_amd64.s:1709 +0x1 fp=0xc0000c0fe8 sp=0xc0000c0fe0 pc=0x4befa1\ncreated by main.LockOSThreadVgetrandom in goroutine 1\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/testdata/testprog/lockosthread_linux.go:40 +0x65\n\ngoroutine 764 gp=0xc00031a1c0 m=nil [runnable, locked to thread]:\nruntime.asyncPreempt2()\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/preempt.go:319 +0x14 fp=0xc0008e46c0 sp=0xc0008e46a0 pc=0x4808d4\nruntime.asyncPreempt()\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/preempt_amd64.s:108 +0x21b fp=0xc0008e4748 sp=0xc0008e46c0 pc=0x4c005b\nmain.LockOSThreadVgetrandom.func1()\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/testdata/testprog/lockosthread_linux.go:62 +0xc1 fp=0xc0008e47e0 sp=0xc0008e4748 pc=0x5a35a1\nruntime.goexit({})\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/asm_amd64.s:1709 +0x1 fp=0xc0008e47e8 sp=0xc0008e47e0 pc=0x4befa1\ncreated by main.LockOSThreadVgetrandom in goroutine 1\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/testdata/testprog/lockosthread_linux.go:40 +0x65\n\ngoroutine 479 gp=0xc00031ae00 m=nil [runnable, locked to thread]:\nruntime.asyncPreempt2()\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/preempt.go:319 +0x14 fp=0xc0003136c0 sp=0xc0003136a0 pc=0x4808d4\nruntime.asyncPreempt()\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/preempt_amd64.s:108 +0x21b fp=0xc000313748 sp=0xc0003136c0 pc=0x4c005b\nmain.LockOSThreadVgetrandom.func1()\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/testdata/testprog/lockosthread_linux.go:62 +0xc1 fp=0xc0003137e0 sp=0xc000313748 pc=0x5a35a1\nruntime.goexit({})\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/asm_amd64.s:1709 +0x1 fp=0xc0003137e8 sp=0xc0003137e0 pc=0x4befa1\ncreated by main.LockOSThreadVgetrandom in goroutine 1\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/testdata/testprog/lockosthread_linux.go:40 +0x65\n\ngoroutine 818 gp=0xc00031afc0 m=nil [runnable, locked to thread]:\nruntime.asyncPreempt2()\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/preempt.go:319 +0x14 fp=0xc000313ec0 sp=0xc000313ea0 pc=0x4808d4\nruntime.asyncPreempt()\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/preempt_amd64.s:108 +0x21b fp=0xc000313f48 sp=0xc000313ec0 pc=0x4c005b\nmain.LockOSThreadVgetrandom.func1()\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/testdata/testprog/lockosthread_linux.go:62 +0xc1 fp=0xc000313fe0 sp=0xc000313f48 pc=0x5a35a1\nruntime.goexit({})\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/asm_amd64.s:1709 +0x1 fp=0xc000313fe8 sp=0xc000313fe0 pc=0x4befa1\ncreated by main.LockOSThreadVgetrandom in goroutine 1\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/testdata/testprog/lockosthread_linux.go:40 +0x65\n\ngoroutine 776 gp=0xc00031b180 m=nil [runnable, locked to thread]:\nruntime.asyncPreempt2()\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/preempt.go:319 +0x14 fp=0xc0003146c0 sp=0xc0003146a0 pc=0x4808d4\nruntime.asyncPreempt()\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/preempt_amd64.s:108 +0x21b fp=0xc000314748 sp=0xc0003146c0 pc=0x4c005b\nmain.LockOSThreadVgetrandom.func1()\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/testdata/testprog/lockosthread_linux.go:62 +0xc1 fp=0xc0003147e0 sp=0xc000314748 pc=0x5a35a1\nruntime.goexit({})\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/asm_amd64.s:1709 +0x1 fp=0xc0003147e8 sp=0xc0003147e0 pc=0x4befa1\ncreated by main.LockOSThreadVgetrandom in goroutine 1\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/testdata/testprog/lockosthread_linux.go:40 +0x65\n\ngoroutine 802 gp=0xc00031b6c0 m=nil [runnable, locked to thread]:\nruntime.asyncPreempt2()\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/preempt.go:319 +0x14 fp=0xc000315ec0 sp=0xc000315ea0 pc=0x4808d4\nruntime.asyncPreempt()\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/preempt_amd64.s:108 +0x21b fp=0xc000315f48 sp=0xc000315ec0 pc=0x4c005b\nmain.LockOSThreadVgetrandom.func1()\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/testdata/testprog/lockosthread_linux.go:61 +0xd2 fp=0xc000315fe0 sp=0xc000315f48 pc=0x5a35b2\nruntime.goexit({})\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/asm_amd64.s:1709 +0x1 fp=0xc000315fe8 sp=0xc000315fe0 pc=0x4befa1\ncreated by main.LockOSThreadVgetrandom in goroutine 1\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/testdata/testprog/lockosthread_linux.go:40 +0x65\n\ngoroutine 835 gp=0xc00031ba40 m=nil [runnable, locked to thread]:\nruntime.asyncPreempt2()\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/preempt.go:319 +0x14 fp=0xc0001f6ec0 sp=0xc0001f6ea0 pc=0x4808d4\nruntime.asyncPreempt()\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/preempt_amd64.s:108 +0x21b fp=0xc0001f6f48 sp=0xc0001f6ec0 pc=0x4c005b\nmain.LockOSThreadVgetrandom.func1()\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/testdata/testprog/lockosthread_linux.go:61 +0xcd fp=0xc0001f6fe0 sp=0xc0001f6f48 pc=0x5a35ad\nruntime.goexit({})\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/asm_amd64.s:1709 +0x1 fp=0xc0001f6fe8 sp=0xc0001f6fe0 pc=0x4befa1\ncreated by main.LockOSThreadVgetrandom in goroutine 1\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/testdata/testprog/lockosthread_linux.go:40 +0x65\n\ngoroutine 647 gp=0xc00031bc00 m=nil [runnable, locked to thread]:\nruntime.asyncPreempt2()\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/preempt.go:319 +0x14 fp=0xc0003216c0 sp=0xc0003216a0 pc=0x4808d4\nruntime.asyncPreempt()\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/preempt_amd64.s:108 +0x21b fp=0xc000321748 sp=0xc0003216c0 pc=0x4c005b\nmain.LockOSThreadVgetrandom.func1()\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/testdata/testprog/lockosthread_linux.go:61 +0xbc fp=0xc0003217e0 sp=0xc000321748 pc=0x5a359c\nruntime.goexit({})\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/asm_amd64.s:1709 +0x1 fp=0xc0003217e8 sp=0xc0003217e0 pc=0x4befa1\ncreated by main.LockOSThreadVgetrandom in goroutine 1\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/testdata/testprog/lockosthread_linux.go:40 +0x65\n\ngoroutine 679 gp=0xc000850540 m=684 mp=0xc0009cb808 [running, locked to thread]:\n\tgoroutine running on other thread; stack unavailable\ncreated by main.LockOSThreadVgetrandom in goroutine 1\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/testdata/testprog/lockosthread_linux.go:40 +0x65\n\ngoroutine 433 gp=0xc000850700 m=nil [runnable, locked to thread]:\nruntime.deferreturn()\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/panic.go:653 +0x77 fp=0xc0000bf748 sp=0xc0000bf740 pc=0x47d8b7\nmain.LockOSThreadVgetrandom.func1()\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/testdata/testprog/lockosthread_linux.go:64 +0xe5 fp=0xc0000bf7e0 sp=0xc0000bf748 pc=0x5a35c5\nruntime.goexit({})\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/asm_amd64.s:1709 +0x1 fp=0xc0000bf7e8 sp=0xc0000bf7e0 pc=0x4befa1\ncreated by main.LockOSThreadVgetrandom in goroutine 1\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/testdata/testprog/lockosthread_linux.go:40 +0x65\n\ngoroutine 480 gp=0xc0008508c0 m=nil [runnable, locked to thread]:\nruntime.asyncPreempt2()\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/preempt.go:319 +0x14 fp=0xc00031f6c0 sp=0xc00031f6a0 pc=0x4808d4\nruntime.asyncPreempt()\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/preempt_amd64.s:108 +0x21b fp=0xc00031f748 sp=0xc00031f6c0 pc=0x4c005b\nmain.LockOSThreadVgetrandom.func1()\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/testdata/testprog/lockosthread_linux.go:62 +0xc1 fp=0xc00031f7e0 sp=0xc00031f748 pc=0x5a35a1\nruntime.goexit({})\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/asm_amd64.s:1709 +0x1 fp=0xc00031f7e8 sp=0xc00031f7e0 pc=0x4befa1\ncreated by main.LockOSThreadVgetrandom in goroutine 1\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/testdata/testprog/lockosthread_linux.go:40 +0x65\n\ngoroutine 837 gp=0xc0007036c0 m=nil [runnable, locked to thread]:\nruntime.asyncPreempt2()\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/preempt.go:319 +0x14 fp=0xc00074aec0 sp=0xc00074aea0 pc=0x4808d4\nruntime.asyncPreempt()\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/preempt_amd64.s:108 +0x21b fp=0xc00074af48 sp=0xc00074aec0 pc=0x4c005b\nmain.LockOSThreadVgetrandom.func1()\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/testdata/testprog/lockosthread_linux.go:62 +0xc1 fp=0xc00074afe0 sp=0xc00074af48 pc=0x5a35a1\nruntime.goexit({})\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/asm_amd64.s:1709 +0x1 fp=0xc00074afe8 sp=0xc00074afe0 pc=0x4befa1\ncreated by main.LockOSThreadVgetrandom in goroutine 1\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/testdata/testprog/lockosthread_linux.go:40 +0x65\n\ngoroutine 794 gp=0xc000703a40 m=nil [runnable, locked to thread]:\nruntime.asyncPreempt2()\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/preempt.go:319 +0x14 fp=0xc00074bec0 sp=0xc00074bea0 pc=0x4808d4\nruntime.asyncPreempt()\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/preempt_amd64.s:108 +0x21b fp=0xc00074bf48 sp=0xc00074bec0 pc=0x4c005b\nmain.LockOSThreadVgetrandom.func1()\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/testdata/testprog/lockosthread_linux.go:62 +0xc1 fp=0xc00074bfe0 sp=0xc00074bf48 pc=0x5a35a1\nruntime.goexit({})\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/asm_amd64.s:1709 +0x1 fp=0xc00074bfe8 sp=0xc00074bfe0 pc=0x4befa1\ncreated by main.LockOSThreadVgetrandom in goroutine 1\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/testdata/testprog/lockosthread_linux.go:40 +0x65\n\ngoroutine 796 gp=0xc00074e380 m=nil [runnable, locked to thread]:\nruntime.asyncPreempt2()\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/preempt.go:319 +0x14 fp=0xc00074dec0 sp=0xc00074dea0 pc=0x4808d4\nruntime.asyncPreempt()\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/preempt_amd64.s:108 +0x21b fp=0xc00074df48 sp=0xc00074dec0 pc=0x4c005b\nmain.LockOSThreadVgetrandom.func1()\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/testdata/testprog/lockosthread_linux.go:61 +0xcd fp=0xc00074dfe0 sp=0xc00074df48 pc=0x5a35ad\nruntime.goexit({})\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/asm_amd64.s:1709 +0x1 fp=0xc00074dfe8 sp=0xc00074dfe0 pc=0x4befa1\ncreated by main.LockOSThreadVgetrandom in goroutine 1\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/testdata/testprog/lockosthread_linux.go:40 +0x65\n\ngoroutine 773 gp=0xc00074e700 m=nil [runnable, locked to thread]:\nruntime.asyncPreempt2()\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/preempt.go:319 +0x14 fp=0xc000746ec0 sp=0xc000746ea0 pc=0x4808d4\nruntime.asyncPreempt()\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/preempt_amd64.s:108 +0x21b fp=0xc000746f48 sp=0xc000746ec0 pc=0x4c005b\nmain.LockOSThreadVgetrandom.func1()\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/testdata/testprog/lockosthread_linux.go:62 +0xc1 fp=0xc000746fe0 sp=0xc000746f48 pc=0x5a35a1\nruntime.goexit({})\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/asm_amd64.s:1709 +0x1 fp=0xc000746fe8 sp=0xc000746fe0 pc=0x4befa1\ncreated by main.LockOSThreadVgetrandom in goroutine 1\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/testdata/testprog/lockosthread_linux.go:40 +0x65\n\ngoroutine 775 gp=0xc0004d88c0 m=nil [runnable, locked to thread]:\nruntime.asyncPreempt2()\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/preempt.go:319 +0x14 fp=0xc0004f26c0 sp=0xc0004f26a0 pc=0x4808d4\nruntime.asyncPreempt()\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/preempt_amd64.s:108 +0x21b fp=0xc0004f2748 sp=0xc0004f26c0 pc=0x4c005b\nmain.LockOSThreadVgetrandom.func1()\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/testdata/testprog/lockosthread_linux.go:62 +0xc1 fp=0xc0004f27e0 sp=0xc0004f2748 pc=0x5a35a1\nruntime.goexit({})\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/asm_amd64.s:1709 +0x1 fp=0xc0004f27e8 sp=0xc0004f27e0 pc=0x4befa1\ncreated by main.LockOSThreadVgetrandom in goroutine 1\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/testdata/testprog/lockosthread_linux.go:40 +0x65\n\ngoroutine 790 gp=0xc0004d8a80 m=665 mp=0xc000439808 [running, locked to thread]:\n\tgoroutine running on other thread; stack unavailable\ncreated by main.LockOSThreadVgetrandom in goroutine 1\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/testdata/testprog/lockosthread_linux.go:40 +0x65\n\ngoroutine 763 gp=0xc000156540 m=nil [runnable, locked to thread]:\nruntime.asyncPreempt2()\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/preempt.go:319 +0x14 fp=0xc0008e3ec0 sp=0xc0008e3ea0 pc=0x4808d4\nruntime.asyncPreempt()\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/preempt_amd64.s:108 +0x21b fp=0xc0008e3f48 sp=0xc0008e3ec0 pc=0x4c005b\nmain.LockOSThreadVgetrandom.func1()\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/testdata/testprog/lockosthread_linux.go:61 +0xbc fp=0xc0008e3fe0 sp=0xc0008e3f48 pc=0x5a359c\nruntime.goexit({})\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/asm_amd64.s:1709 +0x1 fp=0xc0008e3fe8 sp=0xc0008e3fe0 pc=0x4befa1\ncreated by main.LockOSThreadVgetrandom in goroutine 1\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/testdata/testprog/lockosthread_linux.go:40 +0x65\n\ngoroutine 766 gp=0xc000156a80 m=669 mp=0xc000688808 [running, locked to thread]:\n\tgoroutine running on other thread; stack unavailable\ncreated by main.LockOSThreadVgetrandom in goroutine 1\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/testdata/testprog/lockosthread_linux.go:40 +0x65\n\ngoroutine 762 gp=0xc000851880 m=nil [runnable, locked to thread]:\nruntime.asyncPreempt2()\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/preempt.go:319 +0x14 fp=0xc0008e36c0 sp=0xc0008e36a0 pc=0x4808d4\nruntime.asyncPreempt()\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/preempt_amd64.s:108 +0x21b fp=0xc0008e3748 sp=0xc0008e36c0 pc=0x4c005b\nmain.LockOSThreadVgetrandom.func1()\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/testdata/testprog/lockosthread_linux.go:62 +0xc1 fp=0xc0008e37e0 sp=0xc0008e3748 pc=0x5a35a1\nruntime.goexit({})\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/asm_amd64.s:1709 +0x1 fp=0xc0008e37e8 sp=0xc0008e37e0 pc=0x4befa1\ncreated by main.LockOSThreadVgetrandom in goroutine 1\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/testdata/testprog/lockosthread_linux.go:40 +0x65\n\ngoroutine 428 gp=0xc000851a40 m=nil [runnable, locked to thread]:\nruntime.deferreturn()\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/panic.go:653 +0x77 fp=0xc00007bf48 sp=0xc00007bf40 pc=0x47d8b7\nmain.LockOSThreadVgetrandom.func1()\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/testdata/testprog/lockosthread_linux.go:64 +0xe5 fp=0xc00007bfe0 sp=0xc00007bf48 pc=0x5a35c5\nruntime.goexit({})\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/asm_amd64.s:1709 +0x1 fp=0xc00007bfe8 sp=0xc00007bfe0 pc=0x4befa1\ncreated by main.LockOSThreadVgetrandom in goroutine 1\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/testdata/testprog/lockosthread_linux.go:40 +0x65\n\ngoroutine 593 gp=0xc0006e2c40 m=nil [runnable, locked to thread]:\nruntime.asyncPreempt2()\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/preempt.go:319 +0x14 fp=0xc0006fb6c0 sp=0xc0006fb6a0 pc=0x4808d4\nruntime.asyncPreempt()\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/preempt_amd64.s:108 +0x21b fp=0xc0006fb748 sp=0xc0006fb6c0 pc=0x4c005b\nmain.LockOSThreadVgetrandom.func1()\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/testdata/testprog/lockosthread_linux.go:61 +0xbc fp=0xc0006fb7e0 sp=0xc0006fb748 pc=0x5a359c\nruntime.goexit({})\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/asm_amd64.s:1709 +0x1 fp=0xc0006fb7e8 sp=0xc0006fb7e0 pc=0x4befa1\ncreated by main.LockOSThreadVgetrandom in goroutine 1\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/testdata/testprog/lockosthread_linux.go:40 +0x65\n\ngoroutine 529 gp=0xc00074fa40 m=nil [runnable, locked to thread]:\nruntime.asyncPreempt2()\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/preempt.go:319 +0x14 fp=0xc0006f86c0 sp=0xc0006f86a0 pc=0x4808d4\nruntime.asyncPreempt()\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/preempt_amd64.s:108 +0x21b fp=0xc0006f8748 sp=0xc0006f86c0 pc=0x4c005b\nmain.LockOSThreadVgetrandom.func1()\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/testdata/testprog/lockosthread_linux.go:62 +0xc1 fp=0xc0006f87e0 sp=0xc0006f8748 pc=0x5a35a1\nruntime.goexit({})\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/asm_amd64.s:1709 +0x1 fp=0xc0006f87e8 sp=0xc0006f87e0 pc=0x4befa1\ncreated by main.LockOSThreadVgetrandom in goroutine 1\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/testdata/testprog/lockosthread_linux.go:40 +0x65\n\ngoroutine 305 gp=0xc00036f500 m=nil [runnable, locked to thread]:\nruntime.asyncPreempt2()\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/preempt.go:319 +0x14 fp=0xc0006f8ec0 sp=0xc0006f8ea0 pc=0x4808d4\nruntime.asyncPreempt()\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/preempt_amd64.s:108 +0x21b fp=0xc0006f8f48 sp=0xc0006f8ec0 pc=0x4c005b\nmain.LockOSThreadVgetrandom.func1()\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/testdata/testprog/lockosthread_linux.go:62 +0xc1 fp=0xc0006f8fe0 sp=0xc0006f8f48 pc=0x5a35a1\nruntime.goexit({})\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/asm_amd64.s:1709 +0x1 fp=0xc0006f8fe8 sp=0xc0006f8fe0 pc=0x4befa1\ncreated by main.LockOSThreadVgetrandom in goroutine 1\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/testdata/testprog/lockosthread_linux.go:40 +0x65\n\ngoroutine 464 gp=0xc00036f6c0 m=nil [runnable, locked to thread]:\nruntime.asyncPreempt2()\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/preempt.go:319 +0x14 fp=0xc0003226c0 sp=0xc0003226a0 pc=0x4808d4\nruntime.asyncPreempt()\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/preempt_amd64.s:108 +0x21b fp=0xc000322748 sp=0xc0003226c0 pc=0x4c005b\nmain.LockOSThreadVgetrandom.func1()\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/testdata/testprog/lockosthread_linux.go:62 +0xc1 fp=0xc0003227e0 sp=0xc000322748 pc=0x5a35a1\nruntime.goexit({})\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/asm_amd64.s:1709 +0x1 fp=0xc0003227e8 sp=0xc0003227e0 pc=0x4befa1\ncreated by main.LockOSThreadVgetrandom in goroutine 1\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/testdata/testprog/lockosthread_linux.go:40 +0x65\n\ngoroutine 539 gp=0xc000157880 m=nil [runnable, locked to thread]:\nruntime.asyncPreempt2()\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/preempt.go:319 +0x14 fp=0xc00074d6c0 sp=0xc00074d6a0 pc=0x4808d4\nruntime.asyncPreempt()\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/preempt_amd64.s:108 +0x21b fp=0xc00074d748 sp=0xc00074d6c0 pc=0x4c005b\nmain.LockOSThreadVgetrandom.func1()\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/testdata/testprog/lockosthread_linux.go:61 +0xcd fp=0xc00074d7e0 sp=0xc00074d748 pc=0x5a35ad\nruntime.goexit({})\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/asm_amd64.s:1709 +0x1 fp=0xc00074d7e8 sp=0xc00074d7e0 pc=0x4befa1\ncreated by main.LockOSThreadVgetrandom in goroutine 1\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/testdata/testprog/lockosthread_linux.go:40 +0x65\n\ngoroutine 786 gp=0xc00017c1c0 m=nil [runnable, locked to thread]:\nruntime.asyncPreempt2()\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/preempt.go:319 +0x14 fp=0xc000243ec0 sp=0xc000243ea0 pc=0x4808d4\nruntime.asyncPreempt()\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/preempt_amd64.s:108 +0x21b fp=0xc000243f48 sp=0xc000243ec0 pc=0x4c005b\nmain.LockOSThreadVgetrandom.func1()\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/testdata/testprog/lockosthread_linux.go:62 +0xc1 fp=0xc000243fe0 sp=0xc000243f48 pc=0x5a35a1\nruntime.goexit({})\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/asm_amd64.s:1709 +0x1 fp=0xc000243fe8 sp=0xc000243fe0 pc=0x4befa1\ncreated by main.LockOSThreadVgetrandom in goroutine 1\n\t/home/swarming/.swarming/w/ir/x/w/goroot/src/runtime/testdata/testprog/lockosthread_linux.go:40 +0x65\n\ngoroutine 803 gp=0xc00017c380 m=nil [runnable, locked to thread]:\nruntime.asyncPreempt2()\n\t/home/swarming/.swarming/w/ir/x/w/goroot/