Extracting prog: 22.919428204s
Minimizing prog: 1m30.217484753s
Simplifying prog options: 1m5.261866766s
Extracting C: 10.709541274s
Simplifying C: 0s


extracting reproducer from 1 programs
testing a last program of every proc
single: executing 1 programs separately with timeout 30s
testing program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): prlimit64-syz_clone
detailed listing:
executing program 0:
prlimit64(0x0, 0x0, &(0x7f0000000a80)={0x0, 0x140000}, 0x0)
syz_clone(0x0, 0x0, 0x0, 0x0, 0x0, 0x0)

program crashed: panic: runtime error: invalid memory address or nil pointer dereference
single: successfully extracted reproducer
found reproducer with 2 syscalls
minimizing guilty program
testing program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): prlimit64
detailed listing:
executing program 0:
prlimit64(0x0, 0x0, &(0x7f0000000a80)={0x0, 0x140000}, 0x0)

program did not crash
testing program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_clone
detailed listing:
executing program 0:
syz_clone(0x0, 0x0, 0x0, 0x0, 0x0, 0x0)

program did not crash
testing program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): prlimit64-syz_clone
detailed listing:
executing program 0:
prlimit64(0x0, 0x0, 0x0, 0x0)
syz_clone(0x0, 0x0, 0x0, 0x0, 0x0, 0x0)

program did not crash
extracting C reproducer
testing compiled C program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): prlimit64-syz_clone
program did not crash
simplifying guilty program options
testing program (duration=30s, {Threaded:false Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): prlimit64-syz_clone
detailed listing:
executing program 0:
prlimit64(0x0, 0x0, &(0x7f0000000a80)={0x0, 0x140000}, 0x0)
syz_clone(0x0, 0x0, 0x0, 0x0, 0x0, 0x0)

program crashed: panic: runtime error: invalid memory address or nil pointer dereference
extracting C reproducer
testing compiled C program (duration=30s, {Threaded:false Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): prlimit64-syz_clone
program did not crash
testing program (duration=30s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:true NetReset:false Cgroups:false BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): prlimit64-syz_clone
detailed listing:
executing program 0:
prlimit64(0x0, 0x0, &(0x7f0000000a80)={0x0, 0x140000}, 0x0)
syz_clone(0x0, 0x0, 0x0, 0x0, 0x0, 0x0)

program crashed: panic: runtime error: invalid memory address or nil pointer dereference
extracting C reproducer
testing compiled C program (duration=30s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:true NetReset:false Cgroups:false BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): prlimit64-syz_clone
program did not crash
reproducing took 3m29.269528277s
repro crashed as (corrupted=false):
panic: runtime error: invalid memory address or nil pointer dereference
[signal SIGSEGV: segmentation violation code=0x1 addr=0x0 pc=0xa7152e]

goroutine 144 gp=0xc0007af880 m=9 mp=0xc000600708 [running]:
panic({0x1192560?, 0x2072ac0?})
	bazel-out/k8-fastbuild/bin/external/io_bazel_rules_go/stdlib_/src/runtime/panic.go:804 +0x168 fp=0xc00069b3a8 sp=0xc00069b2f8 pc=0x473fe8
runtime.panicmem(...)
	bazel-out/k8-fastbuild/bin/external/io_bazel_rules_go/stdlib_/src/runtime/panic.go:262
runtime.sigpanic()
	bazel-out/k8-fastbuild/bin/external/io_bazel_rules_go/stdlib_/src/runtime/signal_unix.go:900 +0x359 fp=0xc00069b408 sp=0xc00069b3a8 pc=0x476719
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).SendGroupSignal(0x0, 0xc000014b80)
	pkg/sentry/kernel/task_signals.go:385 +0x2e fp=0xc00069b468 sp=0xc00069b408 pc=0xa7152e
gvisor.dev/gvisor/pkg/sentry/kernel.(*rlimitCPUSoftListener).NotifyTimer(0x70?, 0xc000db9f70?)
	pkg/sentry/kernel/task_acct.go:151 +0x45 fp=0xc00069b490 sp=0xc00069b468 pc=0xa55ac5
gvisor.dev/gvisor/pkg/sentry/ktime.(*SyntheticTimer).Set(0xc000db9f70, {0x0?, {0x1?}, 0x0?}, 0x0)
	pkg/sentry/ktime/synthetic_timer.go:139 +0x204 fp=0xc00069b530 sp=0xc00069b490 pc=0x812744
gvisor.dev/gvisor/pkg/sentry/kernel.(*ThreadGroup).notifyRlimitCPUUpdated(0xc000db9808, 0x0)
	pkg/sentry/kernel/task_acct.go:103 +0x10e fp=0xc00069b598 sp=0xc00069b530 pc=0xa557ee
gvisor.dev/gvisor/pkg/sentry/kernel.(*Kernel).NewThreadGroup(0xc00024b008, 0xc001020930, 0xc00034e5a0, 0x0, 0xc00034e5c0)
	pkg/sentry/kernel/thread_group.go:308 +0x370 fp=0xc00069b5d8 sp=0xc00069b598 pc=0xa7bd90
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Clone(0xc000d28c88, 0xc00069b978)
	pkg/sentry/kernel/task_clone.go:238 +0x13e5 fp=0xc00069b968 sp=0xc00069b5d8 pc=0xa5aba5
gvisor.dev/gvisor/pkg/sentry/syscalls/linux.clone(0x300000002?, 0xc00069bab0?, 0x474a0e?, 0xc0007af880?, 0x200000003?, 0x0?)
	pkg/sentry/syscalls/linux/sys_thread.go:215 +0xbd fp=0xc00069ba38 sp=0xc00069b968 pc=0xc2ed9d
gvisor.dev/gvisor/pkg/sentry/syscalls/linux.Clone(0xc00069bb10?, 0xc00069bb10?, {{0x0}, {0x0}, {0x0}, {0x0}, {0x0}, {0x0}})
	pkg/sentry/syscalls/linux/sys_clone_amd64.go:36 +0x2c fp=0xc00069ba78 sp=0xc00069ba38 pc=0xbe7d0c
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).executeSyscall(0xc000d28c88, 0x38, {{0x0}, {0x0}, {0x0}, {0x0}, {0x0}, {0x0}})
	pkg/sentry/kernel/task_syscall.go:143 +0x657 fp=0xc00069bca8 sp=0xc00069ba78 pc=0xa77897
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallInvoke(0xc000d28c88, 0x38, {{0x0}, {0x0}, {0x0}, {0x0}, {0x0}, {0x0}})
	pkg/sentry/kernel/task_syscall.go:323 +0x45 fp=0xc00069bd00 sp=0xc00069bca8 pc=0xa78a05
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallEnter(0xc000d28c88, 0x38, {{0x0}, {0x0}, {0x0}, {0x0}, {0x0}, {0x0}})
	pkg/sentry/kernel/task_syscall.go:283 +0x65 fp=0xc00069bd50 sp=0xc00069bd00 pc=0xa78705
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscall(0xc0008456c0?)
	pkg/sentry/kernel/task_syscall.go:258 +0x2a5 fp=0xc00069be28 sp=0xc00069bd50 pc=0xa78485
gvisor.dev/gvisor/pkg/sentry/kernel.(*runApp).execute(0xc0005f0a20?, 0xc000d28c88)
	pkg/sentry/kernel/task_run.go:269 +0xf17 fp=0xc00069bf30 sp=0xc00069be28 pc=0xa6dd97
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).run(0xc000d28c88, 0x3f)
	pkg/sentry/kernel/task_run.go:97 +0x214 fp=0xc00069bfc0 sp=0xc00069bf30 pc=0xa6c7f4
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start.gowrap1()
	pkg/sentry/kernel/task_start.go:400 +0x25 fp=0xc00069bfe0 sp=0xc00069bfc0 pc=0xa762a5
runtime.goexit({})
	src/runtime/asm_amd64.s:1700 +0x1 fp=0xc00069bfe8 sp=0xc00069bfe0 pc=0x47d0c1
created by gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start in goroutine 405
	pkg/sentry/kernel/task_start.go:400 +0xc5

final repro crashed as (corrupted=false):
panic: runtime error: invalid memory address or nil pointer dereference
[signal SIGSEGV: segmentation violation code=0x1 addr=0x0 pc=0xa7152e]

goroutine 144 gp=0xc0007af880 m=9 mp=0xc000600708 [running]:
panic({0x1192560?, 0x2072ac0?})
	bazel-out/k8-fastbuild/bin/external/io_bazel_rules_go/stdlib_/src/runtime/panic.go:804 +0x168 fp=0xc00069b3a8 sp=0xc00069b2f8 pc=0x473fe8
runtime.panicmem(...)
	bazel-out/k8-fastbuild/bin/external/io_bazel_rules_go/stdlib_/src/runtime/panic.go:262
runtime.sigpanic()
	bazel-out/k8-fastbuild/bin/external/io_bazel_rules_go/stdlib_/src/runtime/signal_unix.go:900 +0x359 fp=0xc00069b408 sp=0xc00069b3a8 pc=0x476719
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).SendGroupSignal(0x0, 0xc000014b80)
	pkg/sentry/kernel/task_signals.go:385 +0x2e fp=0xc00069b468 sp=0xc00069b408 pc=0xa7152e
gvisor.dev/gvisor/pkg/sentry/kernel.(*rlimitCPUSoftListener).NotifyTimer(0x70?, 0xc000db9f70?)
	pkg/sentry/kernel/task_acct.go:151 +0x45 fp=0xc00069b490 sp=0xc00069b468 pc=0xa55ac5
gvisor.dev/gvisor/pkg/sentry/ktime.(*SyntheticTimer).Set(0xc000db9f70, {0x0?, {0x1?}, 0x0?}, 0x0)
	pkg/sentry/ktime/synthetic_timer.go:139 +0x204 fp=0xc00069b530 sp=0xc00069b490 pc=0x812744
gvisor.dev/gvisor/pkg/sentry/kernel.(*ThreadGroup).notifyRlimitCPUUpdated(0xc000db9808, 0x0)
	pkg/sentry/kernel/task_acct.go:103 +0x10e fp=0xc00069b598 sp=0xc00069b530 pc=0xa557ee
gvisor.dev/gvisor/pkg/sentry/kernel.(*Kernel).NewThreadGroup(0xc00024b008, 0xc001020930, 0xc00034e5a0, 0x0, 0xc00034e5c0)
	pkg/sentry/kernel/thread_group.go:308 +0x370 fp=0xc00069b5d8 sp=0xc00069b598 pc=0xa7bd90
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Clone(0xc000d28c88, 0xc00069b978)
	pkg/sentry/kernel/task_clone.go:238 +0x13e5 fp=0xc00069b968 sp=0xc00069b5d8 pc=0xa5aba5
gvisor.dev/gvisor/pkg/sentry/syscalls/linux.clone(0x300000002?, 0xc00069bab0?, 0x474a0e?, 0xc0007af880?, 0x200000003?, 0x0?)
	pkg/sentry/syscalls/linux/sys_thread.go:215 +0xbd fp=0xc00069ba38 sp=0xc00069b968 pc=0xc2ed9d
gvisor.dev/gvisor/pkg/sentry/syscalls/linux.Clone(0xc00069bb10?, 0xc00069bb10?, {{0x0}, {0x0}, {0x0}, {0x0}, {0x0}, {0x0}})
	pkg/sentry/syscalls/linux/sys_clone_amd64.go:36 +0x2c fp=0xc00069ba78 sp=0xc00069ba38 pc=0xbe7d0c
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).executeSyscall(0xc000d28c88, 0x38, {{0x0}, {0x0}, {0x0}, {0x0}, {0x0}, {0x0}})
	pkg/sentry/kernel/task_syscall.go:143 +0x657 fp=0xc00069bca8 sp=0xc00069ba78 pc=0xa77897
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallInvoke(0xc000d28c88, 0x38, {{0x0}, {0x0}, {0x0}, {0x0}, {0x0}, {0x0}})
	pkg/sentry/kernel/task_syscall.go:323 +0x45 fp=0xc00069bd00 sp=0xc00069bca8 pc=0xa78a05
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallEnter(0xc000d28c88, 0x38, {{0x0}, {0x0}, {0x0}, {0x0}, {0x0}, {0x0}})
	pkg/sentry/kernel/task_syscall.go:283 +0x65 fp=0xc00069bd50 sp=0xc00069bd00 pc=0xa78705
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscall(0xc0008456c0?)
	pkg/sentry/kernel/task_syscall.go:258 +0x2a5 fp=0xc00069be28 sp=0xc00069bd50 pc=0xa78485
gvisor.dev/gvisor/pkg/sentry/kernel.(*runApp).execute(0xc0005f0a20?, 0xc000d28c88)
	pkg/sentry/kernel/task_run.go:269 +0xf17 fp=0xc00069bf30 sp=0xc00069be28 pc=0xa6dd97
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).run(0xc000d28c88, 0x3f)
	pkg/sentry/kernel/task_run.go:97 +0x214 fp=0xc00069bfc0 sp=0xc00069bf30 pc=0xa6c7f4
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start.gowrap1()
	pkg/sentry/kernel/task_start.go:400 +0x25 fp=0xc00069bfe0 sp=0xc00069bfc0 pc=0xa762a5
runtime.goexit({})
	src/runtime/asm_amd64.s:1700 +0x1 fp=0xc00069bfe8 sp=0xc00069bfe0 pc=0x47d0c1
created by gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start in goroutine 405
	pkg/sentry/kernel/task_start.go:400 +0xc5