Extracting prog: 1m5.248127817s
Minimizing prog: 3m1.150279704s
Simplifying prog options: 0s
Extracting C: 31.904466831s
Simplifying C: 2m34.760933934s


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: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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_open_procfs$namespace-setns
detailed listing:
executing program 0:
r0 = syz_open_procfs$namespace(0xffffffffffffffff, &(0x7f0000000000)='ns/mnt\x00')
setns(r0, 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=1m0.28687306s, {Threaded:true Repeat:true RepeatTimes:0 Procs:1 Slowdown:10 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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_open_procfs$namespace
detailed listing:
executing program 0:
syz_open_procfs$namespace(0xffffffffffffffff, &(0x7f0000000000)='ns/mnt\x00')

program did not crash
testing program (duration=1m0.28687306s, {Threaded:true Repeat:true RepeatTimes:0 Procs:1 Slowdown:10 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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): setns
detailed listing:
executing program 0:
setns(0xffffffffffffffff, 0x0)

program did not crash
testing program (duration=1m0.28687306s, {Threaded:true Repeat:true RepeatTimes:0 Procs:1 Slowdown:10 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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_open_procfs$namespace-setns
detailed listing:
executing program 0:
r0 = syz_open_procfs$namespace(0xffffffffffffffff, 0x0)
setns(r0, 0x0)

program did not crash
extracting C reproducer
testing compiled C program (duration=1m0.28687306s, {Threaded:true Repeat:true RepeatTimes:0 Procs:1 Slowdown:10 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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_open_procfs$namespace-setns
program crashed: panic: runtime error: invalid memory address or nil pointer dereference
simplifying C reproducer
testing compiled C program (duration=1m0.28687306s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:10 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_open_procfs$namespace-setns
program crashed: panic: runtime error: invalid memory address or nil pointer dereference
testing compiled C program (duration=1m0.28687306s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:10 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_open_procfs$namespace-setns
program crashed: panic: runtime error: invalid memory address or nil pointer dereference
testing compiled C program (duration=1m0.28687306s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:10 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:false HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_open_procfs$namespace-setns
program crashed: panic: runtime error: invalid memory address or nil pointer dereference
testing compiled C program (duration=1m0.28687306s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:10 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_open_procfs$namespace-setns
program crashed: panic: runtime error: invalid memory address or nil pointer dereference
testing compiled C program (duration=1m0.28687306s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:10 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_open_procfs$namespace-setns
program crashed: panic: runtime error: invalid memory address or nil pointer dereference
testing program (duration=1m0.28687306s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:10 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_open_procfs$namespace-setns
detailed listing:
executing program 0:
r0 = syz_open_procfs$namespace(0xffffffffffffffff, &(0x7f0000000000)='ns/mnt\x00')
setns(r0, 0x0)

program crashed: panic: runtime error: invalid memory address or nil pointer dereference
validation run: crashed=true
testing program (duration=1m0.28687306s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:10 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_open_procfs$namespace-setns
detailed listing:
executing program 0:
r0 = syz_open_procfs$namespace(0xffffffffffffffff, &(0x7f0000000000)='ns/mnt\x00')
setns(r0, 0x0)

program crashed: panic: runtime error: invalid memory address or nil pointer dereference
validation run: crashed=true
testing program (duration=1m0.28687306s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:10 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_open_procfs$namespace-setns
detailed listing:
executing program 0:
r0 = syz_open_procfs$namespace(0xffffffffffffffff, &(0x7f0000000000)='ns/mnt\x00')
setns(r0, 0x0)

program crashed: panic: runtime error: invalid memory address or nil pointer dereference
validation run: crashed=true
reproducing took 9m13.015636793s
repro crashed as (corrupted=false):
panic: runtime error: invalid memory address or nil pointer dereference
[signal SIGSEGV: segmentation violation code=0x1 addr=0x0 pc=0x13d0acc]

goroutine 363 gp=0xc000bb9a40 m=21 mp=0xc000e8e808 [running]:
panic({0x24913e0?, 0x38cda50?})
	/syzkaller/.cache/bazel/_bazel_root/09bcf4ef817668e954f893a8f54286a0/sandbox/linux-sandbox/23/execroot/_main/go/src/runtime/panic.go:802 +0x168 fp=0xc000c7bc68 sp=0xc000c7bbb8 pc=0x4bc328
runtime.panicmem(...)
	/syzkaller/.cache/bazel/_bazel_root/09bcf4ef817668e954f893a8f54286a0/sandbox/linux-sandbox/23/execroot/_main/go/src/runtime/panic.go:262
runtime.sigpanic()
	/syzkaller/.cache/bazel/_bazel_root/09bcf4ef817668e954f893a8f54286a0/sandbox/linux-sandbox/23/execroot/_main/go/src/runtime/signal_unix.go:925 +0x359 fp=0xc000c7bcc8 sp=0xc000c7bc68 pc=0x4bf2b9
gvisor.dev/gvisor/pkg/sentry/kernel.(*FSContext).DecRef(...)
	/syzkaller/.cache/bazel/_bazel_root/09bcf4ef817668e954f893a8f54286a0/sandbox/linux-sandbox/23/execroot/_main/gopath/src/gvisor.dev/gvisor/pkg/sentry/kernel/fs_context.go:88
gvisor.dev/gvisor/pkg/sentry/kernel.(*runExitMain).execute(0xc000fc6588?, 0xc000fc6588)
	/syzkaller/.cache/bazel/_bazel_root/09bcf4ef817668e954f893a8f54286a0/sandbox/linux-sandbox/23/execroot/_main/gopath/src/gvisor.dev/gvisor/pkg/sentry/kernel/task_exit.go:300 +0xb4c fp=0xc000c7be68 sp=0xc000c7bcc8 pc=0x13d0acc
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).run(0xc000fc6588, 0x4c)
	/syzkaller/.cache/bazel/_bazel_root/09bcf4ef817668e954f893a8f54286a0/sandbox/linux-sandbox/23/execroot/_main/gopath/src/gvisor.dev/gvisor/pkg/sentry/kernel/task_run.go:89 +0x6e7 fp=0xc000c7bfb0 sp=0xc000c7be68 pc=0x13ec587
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start.gowrap1()
	/syzkaller/.cache/bazel/_bazel_root/09bcf4ef817668e954f893a8f54286a0/sandbox/linux-sandbox/23/execroot/_main/gopath/src/gvisor.dev/gvisor/pkg/sentry/kernel/task_start.go:416 +0x45 fp=0xc000c7bfe0 sp=0xc000c7bfb0 pc=0x1408545
runtime.goexit({})
	/syzkaller/.cache/bazel/_bazel_root/09bcf4ef817668e954f893a8f54286a0/sandbox/linux-sandbox/23/execroot/_main/go/src/runtime/asm_amd64.s:1693 +0x1 fp=0xc000c7bfe8 sp=0xc000c7bfe0 pc=0x4c5b81
created by gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start in goroutine 384
	/syzkaller/.cache/bazel/_bazel_root/09bcf4ef817668e954f893a8f54286a0/sandbox/linux-sandbox/23/execroot/_main/gopath/src/gvisor.dev/gvisor/pkg/sentry/kernel/task_start.go:416 +0x1be

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=0x13d0acc]

goroutine 363 gp=0xc000bb9a40 m=21 mp=0xc000e8e808 [running]:
panic({0x24913e0?, 0x38cda50?})
	/syzkaller/.cache/bazel/_bazel_root/09bcf4ef817668e954f893a8f54286a0/sandbox/linux-sandbox/23/execroot/_main/go/src/runtime/panic.go:802 +0x168 fp=0xc000c7bc68 sp=0xc000c7bbb8 pc=0x4bc328
runtime.panicmem(...)
	/syzkaller/.cache/bazel/_bazel_root/09bcf4ef817668e954f893a8f54286a0/sandbox/linux-sandbox/23/execroot/_main/go/src/runtime/panic.go:262
runtime.sigpanic()
	/syzkaller/.cache/bazel/_bazel_root/09bcf4ef817668e954f893a8f54286a0/sandbox/linux-sandbox/23/execroot/_main/go/src/runtime/signal_unix.go:925 +0x359 fp=0xc000c7bcc8 sp=0xc000c7bc68 pc=0x4bf2b9
gvisor.dev/gvisor/pkg/sentry/kernel.(*FSContext).DecRef(...)
	/syzkaller/.cache/bazel/_bazel_root/09bcf4ef817668e954f893a8f54286a0/sandbox/linux-sandbox/23/execroot/_main/gopath/src/gvisor.dev/gvisor/pkg/sentry/kernel/fs_context.go:88
gvisor.dev/gvisor/pkg/sentry/kernel.(*runExitMain).execute(0xc000fc6588?, 0xc000fc6588)
	/syzkaller/.cache/bazel/_bazel_root/09bcf4ef817668e954f893a8f54286a0/sandbox/linux-sandbox/23/execroot/_main/gopath/src/gvisor.dev/gvisor/pkg/sentry/kernel/task_exit.go:300 +0xb4c fp=0xc000c7be68 sp=0xc000c7bcc8 pc=0x13d0acc
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).run(0xc000fc6588, 0x4c)
	/syzkaller/.cache/bazel/_bazel_root/09bcf4ef817668e954f893a8f54286a0/sandbox/linux-sandbox/23/execroot/_main/gopath/src/gvisor.dev/gvisor/pkg/sentry/kernel/task_run.go:89 +0x6e7 fp=0xc000c7bfb0 sp=0xc000c7be68 pc=0x13ec587
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start.gowrap1()
	/syzkaller/.cache/bazel/_bazel_root/09bcf4ef817668e954f893a8f54286a0/sandbox/linux-sandbox/23/execroot/_main/gopath/src/gvisor.dev/gvisor/pkg/sentry/kernel/task_start.go:416 +0x45 fp=0xc000c7bfe0 sp=0xc000c7bfb0 pc=0x1408545
runtime.goexit({})
	/syzkaller/.cache/bazel/_bazel_root/09bcf4ef817668e954f893a8f54286a0/sandbox/linux-sandbox/23/execroot/_main/go/src/runtime/asm_amd64.s:1693 +0x1 fp=0xc000c7bfe8 sp=0xc000c7bfe0 pc=0x4c5b81
created by gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start in goroutine 384
	/syzkaller/.cache/bazel/_bazel_root/09bcf4ef817668e954f893a8f54286a0/sandbox/linux-sandbox/23/execroot/_main/gopath/src/gvisor.dev/gvisor/pkg/sentry/kernel/task_start.go:416 +0x1be