Extracting prog: 2m10.059940275s
Minimizing prog: 30m0.226893183s
Simplifying prog options: 7m47.395053803s
Extracting C: 47.655664142s
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: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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): unshare-syz_create_resource$binfmt-execveat$binfmt
detailed listing:
executing program 0:
unshare(0xc000680) (rerun: 64)
r0 = syz_create_resource$binfmt(&(0x7f0000000040)='./file1\x00')
execveat$binfmt(0xffffffffffffff9c, r0, 0x0, 0x0, 0x0)

program did not crash
single: failed to extract reproducer
single: executing 1 programs separately with timeout 6m0s
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): unshare-syz_create_resource$binfmt-execveat$binfmt
detailed listing:
executing program 0:
unshare(0xc000680) (rerun: 64)
r0 = syz_create_resource$binfmt(&(0x7f0000000040)='./file1\x00')
execveat$binfmt(0xffffffffffffff9c, r0, 0x0, 0x0, 0x0)

program crashed: DATA RACE in kernel.(*Task).Unshare
single: successfully extracted reproducer
found reproducer with 3 syscalls
minimizing guilty program
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): unshare-syz_create_resource$binfmt
detailed listing:
executing program 0:
unshare(0xc000680) (rerun: 64)
syz_create_resource$binfmt(&(0x7f0000000040)='./file1\x00')

program did not crash
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): unshare-execveat$binfmt
detailed listing:
executing program 0:
unshare(0xc000680) (rerun: 64)
execveat$binfmt(0xffffffffffffff9c, 0x0, 0x0, 0x0, 0x0)

program did not crash
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_create_resource$binfmt-execveat$binfmt
detailed listing:
executing program 0:
r0 = syz_create_resource$binfmt(&(0x7f0000000040)='./file1\x00')
execveat$binfmt(0xffffffffffffff9c, r0, 0x0, 0x0, 0x0)

program did not crash
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): unshare-syz_create_resource$binfmt-execveat$binfmt
detailed listing:
executing program 0:
unshare(0xc000680)
r0 = syz_create_resource$binfmt(&(0x7f0000000040)='./file1\x00')
execveat$binfmt(0xffffffffffffff9c, r0, 0x0, 0x0, 0x0)

program did not crash
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): unshare-syz_create_resource$binfmt-execveat$binfmt
detailed listing:
executing program 0:
unshare(0xc000680) (rerun: 64)
r0 = syz_create_resource$binfmt(0x0)
execveat$binfmt(0xffffffffffffff9c, r0, 0x0, 0x0, 0x0)

program did not crash
extracting C reproducer
testing compiled C program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): unshare-syz_create_resource$binfmt-execveat$binfmt
program crashed: DATA RACE in kernel.(*FSContext).checkAndPreventSharingOutsideTG.func1
a never seen crash title: DATA RACE in kernel.(*FSContext).checkAndPreventSharingOutsideTG.func1, ignore
simplifying guilty program options
testing program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): unshare-syz_create_resource$binfmt-execveat$binfmt
detailed listing:
executing program 0:
unshare(0xc000680) (rerun: 64)
r0 = syz_create_resource$binfmt(&(0x7f0000000040)='./file1\x00')
execveat$binfmt(0xffffffffffffff9c, r0, 0x0, 0x0, 0x0)

program crashed: panic: Watchdog goroutine is stuck
a never seen crash title: panic: Watchdog goroutine is stuck, ignore
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): unshare-syz_create_resource$binfmt-execveat$binfmt
detailed listing:
executing program 0:
unshare(0xc000680) (rerun: 64)
r0 = syz_create_resource$binfmt(&(0x7f0000000040)='./file1\x00')
execveat$binfmt(0xffffffffffffff9c, r0, 0x0, 0x0, 0x0)

program crashed: DATA RACE in kernel.(*Task).Unshare
extracting C reproducer
testing compiled C program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): unshare-syz_create_resource$binfmt-execveat$binfmt
program crashed: DATA RACE in kernel.(*FSContext).checkAndPreventSharingOutsideTG.func1
a never seen crash title: DATA RACE in kernel.(*FSContext).checkAndPreventSharingOutsideTG.func1, ignore
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): unshare-syz_create_resource$binfmt-execveat$binfmt
detailed listing:
executing program 0:
unshare(0xc000680) (rerun: 64)
r0 = syz_create_resource$binfmt(&(0x7f0000000040)='./file1\x00')
execveat$binfmt(0xffffffffffffff9c, r0, 0x0, 0x0, 0x0)

program crashed: DATA RACE in kernel.(*Task).Unshare
validation run: crashed=true
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): unshare-syz_create_resource$binfmt-execveat$binfmt
detailed listing:
executing program 0:
unshare(0xc000680) (rerun: 64)
r0 = syz_create_resource$binfmt(&(0x7f0000000040)='./file1\x00')
execveat$binfmt(0xffffffffffffff9c, r0, 0x0, 0x0, 0x0)

program crashed: DATA RACE in kernel.(*Task).Unshare
validation run: crashed=true
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): unshare-syz_create_resource$binfmt-execveat$binfmt
detailed listing:
executing program 0:
unshare(0xc000680) (rerun: 64)
r0 = syz_create_resource$binfmt(&(0x7f0000000040)='./file1\x00')
execveat$binfmt(0xffffffffffffff9c, r0, 0x0, 0x0, 0x0)

program crashed: DATA RACE in kernel.(*Task).Unshare
validation run: crashed=true
reproducing took 48m18.376858634s
repro crashed as (corrupted=false):
WARNING: DATA RACE
Write at 0x00c0012a49d8 by goroutine 1879:
  gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Unshare()
      pkg/sentry/kernel/task_clone.go:705 +0xd8c
  gvisor.dev/gvisor/pkg/sentry/syscalls/linux.Unshare()
      pkg/sentry/syscalls/linux/sys_thread.go:453 +0x54
  gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).executeSyscall()
      pkg/sentry/kernel/task_syscall.go:143 +0x68c
  gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallInvoke()
      pkg/sentry/kernel/task_syscall.go:323 +0x4c
  gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallEnter()
      pkg/sentry/kernel/task_syscall.go:283 +0x74
  gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscall()
      pkg/sentry/kernel/task_syscall.go:258 +0x3bc
  gvisor.dev/gvisor/pkg/sentry/kernel.(*runApp).execute()
      pkg/sentry/kernel/task_run.go:269 +0x1564
  gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).run()
      pkg/sentry/kernel/task_run.go:97 +0x390
  gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start.gowrap1()
      pkg/sentry/kernel/task_start.go:416 +0x40

Previous read at 0x00c0012a49d8 by goroutine 1881:
  gvisor.dev/gvisor/pkg/sentry/kernel.(*FSContext).checkAndPreventSharingOutsideTG.func1()
      pkg/sentry/kernel/fs_context.go:205 +0x40
  gvisor.dev/gvisor/pkg/sentry/kernel.(*ThreadGroup).ForEachTask()
      pkg/sentry/kernel/threads.go:520 +0x104
  gvisor.dev/gvisor/pkg/sentry/kernel.(*FSContext).checkAndPreventSharingOutsideTG()
      pkg/sentry/kernel/fs_context.go:204 +0xd4
  gvisor.dev/gvisor/pkg/sentry/kernel.(*runExecveAfterExecveCredsLock).execute()
      pkg/sentry/kernel/task_exec.go:155 +0x258
  gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).run()
      pkg/sentry/kernel/task_run.go:97 +0x390
  gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start.gowrap1()
      pkg/sentry/kernel/task_start.go:416 +0x40

final repro crashed as (corrupted=false):
WARNING: DATA RACE
Write at 0x00c0012a49d8 by goroutine 1879:
  gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Unshare()
      pkg/sentry/kernel/task_clone.go:705 +0xd8c
  gvisor.dev/gvisor/pkg/sentry/syscalls/linux.Unshare()
      pkg/sentry/syscalls/linux/sys_thread.go:453 +0x54
  gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).executeSyscall()
      pkg/sentry/kernel/task_syscall.go:143 +0x68c
  gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallInvoke()
      pkg/sentry/kernel/task_syscall.go:323 +0x4c
  gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallEnter()
      pkg/sentry/kernel/task_syscall.go:283 +0x74
  gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscall()
      pkg/sentry/kernel/task_syscall.go:258 +0x3bc
  gvisor.dev/gvisor/pkg/sentry/kernel.(*runApp).execute()
      pkg/sentry/kernel/task_run.go:269 +0x1564
  gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).run()
      pkg/sentry/kernel/task_run.go:97 +0x390
  gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start.gowrap1()
      pkg/sentry/kernel/task_start.go:416 +0x40

Previous read at 0x00c0012a49d8 by goroutine 1881:
  gvisor.dev/gvisor/pkg/sentry/kernel.(*FSContext).checkAndPreventSharingOutsideTG.func1()
      pkg/sentry/kernel/fs_context.go:205 +0x40
  gvisor.dev/gvisor/pkg/sentry/kernel.(*ThreadGroup).ForEachTask()
      pkg/sentry/kernel/threads.go:520 +0x104
  gvisor.dev/gvisor/pkg/sentry/kernel.(*FSContext).checkAndPreventSharingOutsideTG()
      pkg/sentry/kernel/fs_context.go:204 +0xd4
  gvisor.dev/gvisor/pkg/sentry/kernel.(*runExecveAfterExecveCredsLock).execute()
      pkg/sentry/kernel/task_exec.go:155 +0x258
  gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).run()
      pkg/sentry/kernel/task_run.go:97 +0x390
  gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start.gowrap1()
      pkg/sentry/kernel/task_start.go:416 +0x40