Extracting prog: 56.796573529s
Minimizing prog: 4m11.728011401s
Simplifying prog options: 1m46.102783945s
Extracting C: 1m3.767058989s
Simplifying C: 0s


extracting reproducer from 1 programs
testing a last program of every proc
single: executing 1 programs separately with timeout 45s
testing program (duration=45s, {Threaded:true Repeat:true RepeatTimes:0 Procs:1 Slowdown:10 Sandbox:none SandboxArg:0 Leak:false NetInjection:true 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_clone3
detailed listing:
executing program 0:
prlimit64(0x0, 0x0, &(0x7f00000000c0)={0x0, 0x1}, 0x0)
syz_clone3(&(0x7f0000000100)={0x200000, 0x0, 0x0, 0x0, {}, 0x0, 0x0, 0x0, 0x0}, 0x58)

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=1m2.858800959s, {Threaded:true Repeat:true RepeatTimes:0 Procs:1 Slowdown:10 Sandbox:none SandboxArg:0 Leak:false NetInjection:true 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, &(0x7f00000000c0)={0x0, 0x1}, 0x0)

program did not crash
testing program (duration=1m2.858800959s, {Threaded:true Repeat:true RepeatTimes:0 Procs:1 Slowdown:10 Sandbox:none SandboxArg:0 Leak:false NetInjection:true 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_clone3
detailed listing:
executing program 0:
syz_clone3(&(0x7f0000000100)={0x200000, 0x0, 0x0, 0x0, {}, 0x0, 0x0, 0x0, 0x0}, 0x58)

program did not crash
testing program (duration=1m2.858800959s, {Threaded:true Repeat:true RepeatTimes:0 Procs:1 Slowdown:10 Sandbox:none SandboxArg:0 Leak:false NetInjection:true 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_clone3
detailed listing:
executing program 0:
prlimit64(0x0, 0x0, 0x0, 0x0)
syz_clone3(&(0x7f0000000100)={0x200000, 0x0, 0x0, 0x0, {}, 0x0, 0x0, 0x0, 0x0}, 0x58)

program did not crash
testing program (duration=1m2.858800959s, {Threaded:true Repeat:true RepeatTimes:0 Procs:1 Slowdown:10 Sandbox:none SandboxArg:0 Leak:false NetInjection:true 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_clone3
detailed listing:
executing program 0:
prlimit64(0x0, 0x0, &(0x7f00000000c0)={0x0, 0x1}, 0x0)
syz_clone3(0x0, 0x0)

program did not crash
extracting C reproducer
testing compiled C program (duration=1m2.858800959s, {Threaded:true Repeat:true RepeatTimes:0 Procs:1 Slowdown:10 Sandbox:none SandboxArg:0 Leak:false NetInjection:true 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_clone3
program did not crash
simplifying guilty program options
testing program (duration=1m2.858800959s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:10 Sandbox:none SandboxArg:0 Leak:false NetInjection:true 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_clone3
detailed listing:
executing program 0:
prlimit64(0x0, 0x0, &(0x7f00000000c0)={0x0, 0x1}, 0x0)
syz_clone3(&(0x7f0000000100)={0x200000, 0x0, 0x0, 0x0, {}, 0x0, 0x0, 0x0, 0x0}, 0x58)

program crashed: panic: runtime error: invalid memory address or nil pointer dereference
extracting C reproducer
testing compiled C program (duration=1m2.858800959s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:10 Sandbox:none SandboxArg:0 Leak:false NetInjection:true 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_clone3
program did not crash
reproducing took 7m58.407066117s
repro crashed as (corrupted=false):
panic: runtime error: invalid memory address or nil pointer dereference
[signal SIGSEGV: segmentation violation code=0x1 addr=0x0 pc=0xfe7133]

goroutine 1548 gp=0xc0009a4a80 m=13 mp=0xc000a00e08 [running]:
panic({0x1c5a8e0?, 0x2c2fca0?})
	bazel-out/k8-fastbuild/bin/external/io_bazel_rules_go/stdlib_/src/runtime/panic.go:804 +0x168 fp=0xc000e82de8 sp=0xc000e82d38 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=0xc000e82e48 sp=0xc000e82de8 pc=0x47adf9
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).SendGroupSignal(0x0, 0xc000aae600)
	pkg/sentry/kernel/task_signals.go:385 +0x53 fp=0xc000e82ed8 sp=0xc000e82e48 pc=0xfe7133
gvisor.dev/gvisor/pkg/sentry/kernel.(*rlimitCPUSoftListener).NotifyTimer(0xc001194fb0, 0xc001194f70?)
	pkg/sentry/kernel/task_acct.go:151 +0xea fp=0xc000e82f08 sp=0xc000e82ed8 pc=0xfb268a
gvisor.dev/gvisor/pkg/sentry/ktime.(*SyntheticTimer).Set(0xc001194f70, {0x0?, {0x0?}, 0xc000c315b0?}, 0x0)
	pkg/sentry/ktime/synthetic_timer.go:139 +0x342 fp=0xc000e82fe0 sp=0xc000e82f08 pc=0xb71562
gvisor.dev/gvisor/pkg/sentry/kernel.(*ThreadGroup).notifyRlimitCPUUpdated(0xc001194808, 0x0)
	pkg/sentry/kernel/task_acct.go:103 +0x18a fp=0xc000e83088 sp=0xc000e82fe0 pc=0xfb216a
gvisor.dev/gvisor/pkg/sentry/kernel.(*Kernel).NewThreadGroup(0xc00027b008, 0xc001278af0, 0xc00182ee90, 0x0, 0xc00182eea0)
	pkg/sentry/kernel/thread_group.go:308 +0x709 fp=0xc000e83100 sp=0xc000e83088 pc=0xffd9a9
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Clone(0xc001199208, 0xc000e83648)
	pkg/sentry/kernel/task_clone.go:238 +0x217a fp=0xc000e83608 sp=0xc000e83100 pc=0xfbb21a
gvisor.dev/gvisor/pkg/sentry/syscalls/linux.Clone3(0xc001199208, 0x0?, {{0x7f21fbdaf550}, {0x58}, {0x7f21fbdaf550}, {0x0}, {0x0}, {0x58}})
	pkg/sentry/syscalls/linux/sys_thread.go:252 +0x151 fp=0xc000e836e8 sp=0xc000e83608 pc=0x12c6f91
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).executeSyscall(0xc001199208, 0x1b3, {{0x7f21fbdaf550}, {0x58}, {0x7f21fbdaf550}, {0x0}, {0x0}, {0x58}})
	pkg/sentry/kernel/task_syscall.go:143 +0xb9f fp=0xc000e83998 sp=0xc000e836e8 pc=0xff429f
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallInvoke(0xc001199208, 0x1b3, {{0x7f21fbdaf550}, {0x58}, {0x7f21fbdaf550}, {0x0}, {0x0}, {0x58}})
	pkg/sentry/kernel/task_syscall.go:323 +0x85 fp=0xc000e83a40 sp=0xc000e83998 pc=0xff63c5
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallEnter(0xc001199208, 0x1b3, {{0x7f21fbdaf550}, {0x58}, {0x7f21fbdaf550}, {0x0}, {0x0}, {0x58}})
	pkg/sentry/kernel/task_syscall.go:283 +0xc7 fp=0xc000e83ab0 sp=0xc000e83a40 pc=0xff5ce7
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscall(0xc001199208)
	pkg/sentry/kernel/task_syscall.go:258 +0x54a fp=0xc000e83bd0 sp=0xc000e83ab0 pc=0xff584a
gvisor.dev/gvisor/pkg/sentry/kernel.(*runApp).execute(0xc001199208?, 0xc001199208)
	pkg/sentry/kernel/task_run.go:269 +0x2295 fp=0xc000e83e78 sp=0xc000e83bd0 pc=0xfe02d5
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).run(0xc001199208, 0x46)
	pkg/sentry/kernel/task_run.go:97 +0x41b fp=0xc000e83fb0 sp=0xc000e83e78 pc=0xfdd5fb
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start.gowrap1()
	pkg/sentry/kernel/task_start.go:400 +0x45 fp=0xc000e83fe0 sp=0xc000e83fb0 pc=0xff1ba5
runtime.goexit({})
	src/runtime/asm_amd64.s:1700 +0x1 fp=0xc000e83fe8 sp=0xc000e83fe0 pc=0x4819a1
created by gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start in goroutine 1781
	pkg/sentry/kernel/task_start.go:400 +0x185

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=0xfe7133]

goroutine 1548 gp=0xc0009a4a80 m=13 mp=0xc000a00e08 [running]:
panic({0x1c5a8e0?, 0x2c2fca0?})
	bazel-out/k8-fastbuild/bin/external/io_bazel_rules_go/stdlib_/src/runtime/panic.go:804 +0x168 fp=0xc000e82de8 sp=0xc000e82d38 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=0xc000e82e48 sp=0xc000e82de8 pc=0x47adf9
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).SendGroupSignal(0x0, 0xc000aae600)
	pkg/sentry/kernel/task_signals.go:385 +0x53 fp=0xc000e82ed8 sp=0xc000e82e48 pc=0xfe7133
gvisor.dev/gvisor/pkg/sentry/kernel.(*rlimitCPUSoftListener).NotifyTimer(0xc001194fb0, 0xc001194f70?)
	pkg/sentry/kernel/task_acct.go:151 +0xea fp=0xc000e82f08 sp=0xc000e82ed8 pc=0xfb268a
gvisor.dev/gvisor/pkg/sentry/ktime.(*SyntheticTimer).Set(0xc001194f70, {0x0?, {0x0?}, 0xc000c315b0?}, 0x0)
	pkg/sentry/ktime/synthetic_timer.go:139 +0x342 fp=0xc000e82fe0 sp=0xc000e82f08 pc=0xb71562
gvisor.dev/gvisor/pkg/sentry/kernel.(*ThreadGroup).notifyRlimitCPUUpdated(0xc001194808, 0x0)
	pkg/sentry/kernel/task_acct.go:103 +0x18a fp=0xc000e83088 sp=0xc000e82fe0 pc=0xfb216a
gvisor.dev/gvisor/pkg/sentry/kernel.(*Kernel).NewThreadGroup(0xc00027b008, 0xc001278af0, 0xc00182ee90, 0x0, 0xc00182eea0)
	pkg/sentry/kernel/thread_group.go:308 +0x709 fp=0xc000e83100 sp=0xc000e83088 pc=0xffd9a9
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Clone(0xc001199208, 0xc000e83648)
	pkg/sentry/kernel/task_clone.go:238 +0x217a fp=0xc000e83608 sp=0xc000e83100 pc=0xfbb21a
gvisor.dev/gvisor/pkg/sentry/syscalls/linux.Clone3(0xc001199208, 0x0?, {{0x7f21fbdaf550}, {0x58}, {0x7f21fbdaf550}, {0x0}, {0x0}, {0x58}})
	pkg/sentry/syscalls/linux/sys_thread.go:252 +0x151 fp=0xc000e836e8 sp=0xc000e83608 pc=0x12c6f91
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).executeSyscall(0xc001199208, 0x1b3, {{0x7f21fbdaf550}, {0x58}, {0x7f21fbdaf550}, {0x0}, {0x0}, {0x58}})
	pkg/sentry/kernel/task_syscall.go:143 +0xb9f fp=0xc000e83998 sp=0xc000e836e8 pc=0xff429f
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallInvoke(0xc001199208, 0x1b3, {{0x7f21fbdaf550}, {0x58}, {0x7f21fbdaf550}, {0x0}, {0x0}, {0x58}})
	pkg/sentry/kernel/task_syscall.go:323 +0x85 fp=0xc000e83a40 sp=0xc000e83998 pc=0xff63c5
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallEnter(0xc001199208, 0x1b3, {{0x7f21fbdaf550}, {0x58}, {0x7f21fbdaf550}, {0x0}, {0x0}, {0x58}})
	pkg/sentry/kernel/task_syscall.go:283 +0xc7 fp=0xc000e83ab0 sp=0xc000e83a40 pc=0xff5ce7
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscall(0xc001199208)
	pkg/sentry/kernel/task_syscall.go:258 +0x54a fp=0xc000e83bd0 sp=0xc000e83ab0 pc=0xff584a
gvisor.dev/gvisor/pkg/sentry/kernel.(*runApp).execute(0xc001199208?, 0xc001199208)
	pkg/sentry/kernel/task_run.go:269 +0x2295 fp=0xc000e83e78 sp=0xc000e83bd0 pc=0xfe02d5
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).run(0xc001199208, 0x46)
	pkg/sentry/kernel/task_run.go:97 +0x41b fp=0xc000e83fb0 sp=0xc000e83e78 pc=0xfdd5fb
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start.gowrap1()
	pkg/sentry/kernel/task_start.go:400 +0x45 fp=0xc000e83fe0 sp=0xc000e83fb0 pc=0xff1ba5
runtime.goexit({})
	src/runtime/asm_amd64.s:1700 +0x1 fp=0xc000e83fe8 sp=0xc000e83fe0 pc=0x4819a1
created by gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start in goroutine 1781
	pkg/sentry/kernel/task_start.go:400 +0x185