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4.21.0-0.okd-scos-2026-04-03-145103

Download installer and client with:

oc adm release extract --tools registry.ci.openshift.org/origin/release-scos:4.21.0-0.okd-scos-2026-04-03-145103
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Tests:

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Upgrades to:

Unable to show full changelog: could not get image info for from pullSpec registry.ci.openshift.org/origin/release-scos:4.21.0-0.okd-scos-2026-04-03-025103: could not get image info for registry.ci.openshift.org/origin/release-scos:4.21.0-0.okd-scos-2026-04-03-025103: runtime/cgo: runtime/cgo: pthread_create failed: Resource temporarily unavailable pthread_create failed: Resource temporarily unavailable SIGABRT: abort PC=0x7fb0062df02c m=3 sigcode=18446744073709551610 goroutine 0 gp=0xc000003180 m=3 mp=0xc0000b1008 [idle]: runtime: g 0 gp=0xc000003180: unknown pc 0x7fb0062df02c stack: frame={sp:0x7fafb6e1a7d0, fp:0x0} stack=[0x7fafb661b1e0,0x7fafb6e1ade0) 0x00007fafb6e1a6d0: 0x0000000000000000 0x0000000000000000 0x00007fafb6e1a6e0: 0x0000000001cc73e0 0x0000000001cc73e6 0x00007fafb6e1a6f0: 0x0000000000788215 0x0000000000788215 0x00007fafb6e1a700: 0x00000000ffffffff 0x00007fafbe5db000 0x00007fafb6e1a710: 0x00007fafb6e1a758 0x00000000078f5960 0x00007fafb6e1a720: 0x000000000852f200 0x0000000000001803 0x00007fafb6e1a730: 0x0000000001cc73e5 0x0000000001c902d7 0x00007fafb6e1a740: 0x00000000070262c3 0x0000000000764e1b 0x00007fafb6e1a750: 0x00007fafb6e1a7b8 0x0000000001cacf33 0x00007fafb6e1a760: 0x0000000001c4d180 0x00007fafb6e1a758 0x00007fafb6e1a770: 0x0000000000001803 0x000000000852f200 0x00007fafb6e1a780: 0x0000000000024b01 0x0500000001c902e9 0x00007fafb6e1a790: 0x000000000703f816 0x000000000852f200 0x00007fafb6e1a7a0: 0x00000000078f5960 0x00007fb0062ec689 0x00007fafb6e1a7b0: 0x0000000000000000 0x0000000000000011 0x00007fafb6e1a7c0: 0x0000000000000130 0x00007fb0062df01e 0x00007fafb6e1a7d0: <0x0000000000000120 0x0000000000000000 0x00007fafb6e1a7e0: 0x00007faf00000013 0x0000000001cc5228 0x00007fafb6e1a7f0: 0x000000000076ecc2 0x0000000000000004 0x00007fafb6e1a800: 0x0000003400000013 0x00007fb006362421 0x00007fafb6e1a810: 0x00007fafbddd9640 0x00007fafb6e1aae0 0x00007fafb6e1a820: 0x00007fafb6e1a94e 0x00007fafb6e1a94f 0x00007fafb6e1a830: 0x00007fafbddd9640 0x00007fb0062dced5 0x00007fafb6e1a840: 0x00007fafb0000020 0x00007fb0062e2115 0x00007fafb6e1a850: 0x00000000003d0f00 0xcf4cbe857c272d00 0x00007fafb6e1a860: 0x00007fafb6e1b640 0x0000000000000006 0x00007fafb6e1a870: 0x0000000008b2db60 0x00007fafb6e1aba0 0x00007fafb6e1a880: 0x000000c000003180 0x00007fb006291b86 0x00007fafb6e1a890: 0x00007fb00644deb0 0x00007fb00627b873 0x00007fafb6e1a8a0: 0x0000000000000020 0x000000000000000d 0x00007fafb6e1a8b0: 0x0000000006241419 0x000000000000000d 0x00007fafb6e1a8c0: 0x0000000000000000 0x00007fb0062d4fbd runtime: g 0 gp=0xc000003180: unknown pc 0x7fb0062df02c stack: frame={sp:0x7fafb6e1a7d0, fp:0x0} stack=[0x7fafb661b1e0,0x7fafb6e1ade0) 0x00007fafb6e1a6d0: 0x0000000000000000 0x0000000000000000 0x00007fafb6e1a6e0: 0x0000000001cc73e0 0x0000000001cc73e6 0x00007fafb6e1a6f0: 0x0000000000788215 0x0000000000788215 0x00007fafb6e1a700: 0x00000000ffffffff 0x00007fafbe5db000 0x00007fafb6e1a710: 0x00007fafb6e1a758 0x00000000078f5960 0x00007fafb6e1a720: 0x000000000852f200 0x0000000000001803 0x00007fafb6e1a730: 0x0000000001cc73e5 0x0000000001c902d7 0x00007fafb6e1a740: 0x00000000070262c3 0x0000000000764e1b 0x00007fafb6e1a750: 0x00007fafb6e1a7b8 0x0000000001cacf33 0x00007fafb6e1a760: 0x0000000001c4d180 0x00007fafb6e1a758 0x00007fafb6e1a770: 0x0000000000001803 0x000000000852f200 0x00007fafb6e1a780: 0x0000000000024b01 0x0500000001c902e9 0x00007fafb6e1a790: 0x000000000703f816 0x000000000852f200 0x00007fafb6e1a7a0: 0x00000000078f5960 0x00007fb0062ec689 0x00007fafb6e1a7b0: 0x0000000000000000 0x0000000000000011 0x00007fafb6e1a7c0: 0x0000000000000130 0x00007fb0062df01e 0x00007fafb6e1a7d0: <0x0000000000000120 0x0000000000000000 0x00007fafb6e1a7e0: 0x00007faf00000013 0x0000000001cc5228 0x00007fafb6e1a7f0: 0x000000000076ecc2 0x0000000000000004 0x00007fafb6e1a800: 0x0000003400000013 0x00007fb006362421 0x00007fafb6e1a810: 0x00007fafbddd9640 0x00007fafb6e1aae0 0x00007fafb6e1a820: 0x00007fafb6e1a94e 0x00007fafb6e1a94f 0x00007fafb6e1a830: 0x00007fafbddd9640 0x00007fb0062dced5 0x00007fafb6e1a840: 0x00007fafb0000020 0x00007fb0062e2115 0x00007fafb6e1a850: 0x00000000003d0f00 0xcf4cbe857c272d00 0x00007fafb6e1a860: 0x00007fafb6e1b640 0x0000000000000006 0x00007fafb6e1a870: 0x0000000008b2db60 0x00007fafb6e1aba0 0x00007fafb6e1a880: 0x000000c000003180 0x00007fb006291b86 0x00007fafb6e1a890: 0x00007fb00644deb0 0x00007fb00627b873 0x00007fafb6e1a8a0: 0x0000000000000020 0x000000000000000d 0x00007fafb6e1a8b0: 0x0000000006241419 0x000000000000000d 0x00007fafb6e1a8c0: 0x0000000000000000 0x00007fb0062d4fbd goroutine 1 gp=0xc000002380 m=0 mp=0x860c6a0 [running, locked to thread]: goroutine running on other thread; stack unavailable goroutine 2 gp=0xc000002e00 m=nil [runnable]: runtime.forcegchelper() /usr/lib/golang/src/runtime/proc.go:364 fp=0xc0000aafe0 sp=0xc0000aafd8 pc=0x1c88700 runtime.goexit({}) /usr/lib/golang/src/runtime/asm_amd64.s:1693 +0x1 fp=0xc0000aafe8 sp=0xc0000aafe0 pc=0x1cc94a1 created by runtime.init.7 in goroutine 1 /usr/lib/golang/src/runtime/proc.go:361 +0x1a goroutine 3 gp=0xc000003340 m=nil [GC sweep wait]: runtime.gopark(0x0?, 0x0?, 0x0?, 0x0?, 0x0?) /usr/lib/golang/src/runtime/proc.go:460 +0xce fp=0xc0000ab780 sp=0xc0000ab760 pc=0x1cc0f2e runtime.goparkunlock(...) /usr/lib/golang/src/runtime/proc.go:466 runtime.bgsweep(0xc0000d6000) /usr/lib/golang/src/runtime/mgcsweep.go:279 +0x94 fp=0xc0000ab7c8 sp=0xc0000ab780 pc=0x1c6deb4 runtime.gcenable.gowrap1() /usr/lib/golang/src/runtime/mgc.go:212 +0x25 fp=0xc0000ab7e0 sp=0xc0000ab7c8 pc=0x1c61b05 runtime.goexit({}) /usr/lib/golang/src/runtime/asm_amd64.s:1693 +0x1 fp=0xc0000ab7e8 sp=0xc0000ab7e0 pc=0x1cc94a1 created by runtime.gcenable in goroutine 1 /usr/lib/golang/src/runtime/mgc.go:212 +0x66 goroutine 4 gp=0xc000003500 m=nil [GC scavenge wait]: runtime.gopark(0xc0000d6000?, 0x6135ac8?, 0x1?, 0x0?, 0xc000003500?) /usr/lib/golang/src/runtime/proc.go:460 +0xce fp=0xc0000abf78 sp=0xc0000abf58 pc=0x1cc0f2e runtime.goparkunlock(...) /usr/lib/golang/src/runtime/proc.go:466 runtime.(*scavengerState).park(0x8608320) /usr/lib/golang/src/runtime/mgcscavenge.go:425 +0x49 fp=0xc0000abfa8 sp=0xc0000abf78 pc=0x1c6b7c9 runtime.bgscavenge(0xc0000d6000) /usr/lib/golang/src/runtime/mgcscavenge.go:653 +0x3c fp=0xc0000abfc8 sp=0xc0000abfa8 pc=0x1c6bd7c runtime.gcenable.gowrap2() /usr/lib/golang/src/runtime/mgc.go:213 +0x25 fp=0xc0000abfe0 sp=0xc0000abfc8 pc=0x1c61aa5 runtime.goexit({}) /usr/lib/golang/src/runtime/asm_amd64.s:1693 +0x1 fp=0xc0000abfe8 sp=0xc0000abfe0 pc=0x1cc94a1 created by runtime.gcenable in goroutine 1 /usr/lib/golang/src/runtime/mgc.go:213 +0xa5 goroutine 5 gp=0xc000003a40 m=nil [runnable]: runtime.updateMaxProcsGoroutine() /usr/lib/golang/src/runtime/proc.go:6711 fp=0xc0000ac7e0 sp=0xc0000ac7d8 pc=0x1c96800 runtime.goexit({}) /usr/lib/golang/src/runtime/asm_amd64.s:1693 +0x1 fp=0xc0000ac7e8 sp=0xc0000ac7e0 pc=0x1cc94a1 created by runtime.defaultGOMAXPROCSUpdateEnable in goroutine 1 /usr/lib/golang/src/runtime/proc.go:6708 +0x37 rax 0x0 rbx 0x7fafb6e1b640 rcx 0x7fb0062df02c rdx 0x6 rdi 0x174b5b rsi 0x174b5e rbp 0x174b5e rsp 0x7fafb6e1a7d0 r8 0x7fafb6e1a8a0 r9 0x7fb006403d20 r10 0x8 r11 0x246 r12 0x6 r13 0x7fafb6e1aba0 r14 0xc000003180 r15 0xffffffffffffffff rip 0x7fb0062df02c rflags 0x246 cs 0x33 fs 0x0 gs 0x0

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