Extracting prog: 26.97037191s
Minimizing prog: 1m30.252995797s
Simplifying prog options: 1m11.296157784s
Extracting C: 12.853703546s
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 3m39.4435557s
repro crashed as (corrupted=false):
panic: runtime error: invalid memory address or nil pointer dereference
[signal SIGSEGV: segmentation violation code=0x1 addr=0x0 pc=0xf45465]

goroutine 374 gp=0xc000a31a40 m=27 mp=0xc000f80008 [running]:
panic({0x1b67e00?, 0x2b48150?})
	bazel-out/k8-fastbuild/bin/external/io_bazel_rules_go/stdlib_/src/runtime/panic.go:804 +0x168 fp=0xc000832ce8 sp=0xc000832c38 pc=0x478628
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=0xc000832d48 sp=0xc000832ce8 pc=0x47adf9
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).SendGroupSignal(0x0, 0xc0005ddc00)
	pkg/sentry/kernel/task_signals.go:385 +0x45 fp=0xc000832de0 sp=0xc000832d48 pc=0xf45465
gvisor.dev/gvisor/pkg/sentry/kernel.(*rlimitCPUSoftListener).NotifyTimer(0xc000a6b7b0, 0xc000a6b770?)
	pkg/sentry/kernel/task_acct.go:151 +0xca fp=0xc000832e10 sp=0xc000832de0 pc=0xf1354a
gvisor.dev/gvisor/pkg/sentry/ktime.(*SyntheticTimer).Set(0xc000a6b770, {0x0?, {0x0?}, 0x1f706c0?}, 0x0)
	pkg/sentry/ktime/synthetic_timer.go:139 +0x2c5 fp=0xc000832ee8 sp=0xc000832e10 pc=0xb18565
gvisor.dev/gvisor/pkg/sentry/kernel.(*ThreadGroup).notifyRlimitCPUUpdated(0xc000a6b008, 0x0)
	pkg/sentry/kernel/task_acct.go:103 +0x179 fp=0xc000832f78 sp=0xc000832ee8 pc=0xf13079
gvisor.dev/gvisor/pkg/sentry/kernel.(*Kernel).NewThreadGroup(0xc00024f008, 0xc0002993b0, 0xc000c07660, 0x0, 0xc000c07670)
	pkg/sentry/kernel/thread_group.go:308 +0x75f fp=0xc000832fe0 sp=0xc000832f78 pc=0xf5a19f
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Clone(0xc000adcc88, 0xc000833598)
	pkg/sentry/kernel/task_clone.go:238 +0x2565 fp=0xc000833578 sp=0xc000832fe0 pc=0xf1b645
gvisor.dev/gvisor/pkg/sentry/syscalls/linux.clone(0xc000adcc88, 0x0, 0x0, 0x0, 0x0, 0x0)
	pkg/sentry/syscalls/linux/sys_thread.go:215 +0x125 fp=0xc000833668 sp=0xc000833578 pc=0x12165e5
gvisor.dev/gvisor/pkg/sentry/syscalls/linux.Clone(0xc000adcc88, 0x0?, {{0x0}, {0x0}, {0x0}, {0x0}, {0x0}, {0x0}})
	pkg/sentry/syscalls/linux/sys_clone_amd64.go:36 +0x4e fp=0xc0008336c8 sp=0xc000833668 pc=0x11a646e
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).executeSyscall(0xc000adcc88, 0x38, {{0x0}, {0x0}, {0x0}, {0x0}, {0x0}, {0x0}})
	pkg/sentry/kernel/task_syscall.go:143 +0x995 fp=0xc000833960 sp=0xc0008336c8 pc=0xf51d95
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallInvoke(0xc000adcc88, 0x38, {{0x0}, {0x0}, {0x0}, {0x0}, {0x0}, {0x0}})
	pkg/sentry/kernel/task_syscall.go:323 +0x72 fp=0xc000833a08 sp=0xc000833960 pc=0xf53bf2
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallEnter(0xc000adcc88, 0x38, {{0x0}, {0x0}, {0x0}, {0x0}, {0x0}, {0x0}})
	pkg/sentry/kernel/task_syscall.go:283 +0x94 fp=0xc000833a78 sp=0xc000833a08 pc=0xf535f4
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscall(0xc000adcc88)
	pkg/sentry/kernel/task_syscall.go:258 +0x4b0 fp=0xc000833b98 sp=0xc000833a78 pc=0xf53190
gvisor.dev/gvisor/pkg/sentry/kernel.(*runApp).execute(0xc000adcc88?, 0xc000adcc88)
	pkg/sentry/kernel/task_run.go:269 +0x1fae fp=0xc000833e70 sp=0xc000833b98 pc=0xf3f2ae
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).run(0xc000adcc88, 0x3c)
	pkg/sentry/kernel/task_run.go:97 +0x4fb fp=0xc000833fb0 sp=0xc000833e70 pc=0xf3c91b
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start.gowrap1()
	pkg/sentry/kernel/task_start.go:400 +0x45 fp=0xc000833fe0 sp=0xc000833fb0 pc=0xf4fb65
runtime.goexit({})
	src/runtime/asm_amd64.s:1700 +0x1 fp=0xc000833fe8 sp=0xc000833fe0 pc=0x4819a1
created by gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start in goroutine 289
	pkg/sentry/kernel/task_start.go:400 +0x165

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=0xf45465]

goroutine 374 gp=0xc000a31a40 m=27 mp=0xc000f80008 [running]:
panic({0x1b67e00?, 0x2b48150?})
	bazel-out/k8-fastbuild/bin/external/io_bazel_rules_go/stdlib_/src/runtime/panic.go:804 +0x168 fp=0xc000832ce8 sp=0xc000832c38 pc=0x478628
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=0xc000832d48 sp=0xc000832ce8 pc=0x47adf9
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).SendGroupSignal(0x0, 0xc0005ddc00)
	pkg/sentry/kernel/task_signals.go:385 +0x45 fp=0xc000832de0 sp=0xc000832d48 pc=0xf45465
gvisor.dev/gvisor/pkg/sentry/kernel.(*rlimitCPUSoftListener).NotifyTimer(0xc000a6b7b0, 0xc000a6b770?)
	pkg/sentry/kernel/task_acct.go:151 +0xca fp=0xc000832e10 sp=0xc000832de0 pc=0xf1354a
gvisor.dev/gvisor/pkg/sentry/ktime.(*SyntheticTimer).Set(0xc000a6b770, {0x0?, {0x0?}, 0x1f706c0?}, 0x0)
	pkg/sentry/ktime/synthetic_timer.go:139 +0x2c5 fp=0xc000832ee8 sp=0xc000832e10 pc=0xb18565
gvisor.dev/gvisor/pkg/sentry/kernel.(*ThreadGroup).notifyRlimitCPUUpdated(0xc000a6b008, 0x0)
	pkg/sentry/kernel/task_acct.go:103 +0x179 fp=0xc000832f78 sp=0xc000832ee8 pc=0xf13079
gvisor.dev/gvisor/pkg/sentry/kernel.(*Kernel).NewThreadGroup(0xc00024f008, 0xc0002993b0, 0xc000c07660, 0x0, 0xc000c07670)
	pkg/sentry/kernel/thread_group.go:308 +0x75f fp=0xc000832fe0 sp=0xc000832f78 pc=0xf5a19f
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Clone(0xc000adcc88, 0xc000833598)
	pkg/sentry/kernel/task_clone.go:238 +0x2565 fp=0xc000833578 sp=0xc000832fe0 pc=0xf1b645
gvisor.dev/gvisor/pkg/sentry/syscalls/linux.clone(0xc000adcc88, 0x0, 0x0, 0x0, 0x0, 0x0)
	pkg/sentry/syscalls/linux/sys_thread.go:215 +0x125 fp=0xc000833668 sp=0xc000833578 pc=0x12165e5
gvisor.dev/gvisor/pkg/sentry/syscalls/linux.Clone(0xc000adcc88, 0x0?, {{0x0}, {0x0}, {0x0}, {0x0}, {0x0}, {0x0}})
	pkg/sentry/syscalls/linux/sys_clone_amd64.go:36 +0x4e fp=0xc0008336c8 sp=0xc000833668 pc=0x11a646e
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).executeSyscall(0xc000adcc88, 0x38, {{0x0}, {0x0}, {0x0}, {0x0}, {0x0}, {0x0}})
	pkg/sentry/kernel/task_syscall.go:143 +0x995 fp=0xc000833960 sp=0xc0008336c8 pc=0xf51d95
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallInvoke(0xc000adcc88, 0x38, {{0x0}, {0x0}, {0x0}, {0x0}, {0x0}, {0x0}})
	pkg/sentry/kernel/task_syscall.go:323 +0x72 fp=0xc000833a08 sp=0xc000833960 pc=0xf53bf2
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallEnter(0xc000adcc88, 0x38, {{0x0}, {0x0}, {0x0}, {0x0}, {0x0}, {0x0}})
	pkg/sentry/kernel/task_syscall.go:283 +0x94 fp=0xc000833a78 sp=0xc000833a08 pc=0xf535f4
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscall(0xc000adcc88)
	pkg/sentry/kernel/task_syscall.go:258 +0x4b0 fp=0xc000833b98 sp=0xc000833a78 pc=0xf53190
gvisor.dev/gvisor/pkg/sentry/kernel.(*runApp).execute(0xc000adcc88?, 0xc000adcc88)
	pkg/sentry/kernel/task_run.go:269 +0x1fae fp=0xc000833e70 sp=0xc000833b98 pc=0xf3f2ae
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).run(0xc000adcc88, 0x3c)
	pkg/sentry/kernel/task_run.go:97 +0x4fb fp=0xc000833fb0 sp=0xc000833e70 pc=0xf3c91b
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start.gowrap1()
	pkg/sentry/kernel/task_start.go:400 +0x45 fp=0xc000833fe0 sp=0xc000833fb0 pc=0xf4fb65
runtime.goexit({})
	src/runtime/asm_amd64.s:1700 +0x1 fp=0xc000833fe8 sp=0xc000833fe0 pc=0x4819a1
created by gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start in goroutine 289
	pkg/sentry/kernel/task_start.go:400 +0x165