Extracting prog: 24.683866913s
Minimizing prog: 5m30.627754216s
Simplifying prog options: 0s
Extracting C: 11.561505272s
Simplifying C: 1m25.211559275s


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-openat$tun-ioctl$TUNSETIFF-ioctl$TUNSETPERSIST-seccomp$SECCOMP_SET_MODE_FILTER_LISTENER-signalfd4-ioctl$TUNSETPERSIST
detailed listing:
executing program 0:
unshare(0x40020200)
r0 = openat$tun(0xffffffffffffff9c, &(0x7f0000000000), 0x0, 0x0)
ioctl$TUNSETIFF(r0, 0x400454ca, &(0x7f0000000200)={'\x00', 0x2})
ioctl$TUNSETPERSIST(r0, 0x400454cb, 0x1)
seccomp$SECCOMP_SET_MODE_FILTER_LISTENER(0x1, 0x0, &(0x7f0000000080)={0x2, &(0x7f0000000240)=[{0x50, 0x0, 0x0, 0x200000}, {0x6}]})
signalfd4(0xffffffffffffffff, 0x0, 0x0, 0x800)
ioctl$TUNSETPERSIST(r0, 0x400454cb, 0x0)

program crashed: panic: Decrementing non-positive ref count ADDR, owned by tun.tunEndpoint
single: successfully extracted reproducer
found reproducer with 7 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: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-openat$tun-ioctl$TUNSETIFF-ioctl$TUNSETPERSIST-seccomp$SECCOMP_SET_MODE_FILTER_LISTENER-signalfd4
detailed listing:
executing program 0:
unshare(0x40020200)
r0 = openat$tun(0xffffffffffffff9c, &(0x7f0000000000), 0x0, 0x0)
ioctl$TUNSETIFF(r0, 0x400454ca, &(0x7f0000000200)={'\x00', 0x2})
ioctl$TUNSETPERSIST(r0, 0x400454cb, 0x1)
seccomp$SECCOMP_SET_MODE_FILTER_LISTENER(0x1, 0x0, &(0x7f0000000080)={0x2, &(0x7f0000000240)=[{0x50, 0x0, 0x0, 0x200000}, {0x6}]})
signalfd4(0xffffffffffffffff, 0x0, 0x0, 0x800)

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: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-openat$tun-ioctl$TUNSETIFF-ioctl$TUNSETPERSIST-seccomp$SECCOMP_SET_MODE_FILTER_LISTENER-ioctl$TUNSETPERSIST
detailed listing:
executing program 0:
unshare(0x40020200)
r0 = openat$tun(0xffffffffffffff9c, &(0x7f0000000000), 0x0, 0x0)
ioctl$TUNSETIFF(r0, 0x400454ca, &(0x7f0000000200)={'\x00', 0x2})
ioctl$TUNSETPERSIST(r0, 0x400454cb, 0x1)
seccomp$SECCOMP_SET_MODE_FILTER_LISTENER(0x1, 0x0, &(0x7f0000000080)={0x2, &(0x7f0000000240)=[{0x50, 0x0, 0x0, 0x200000}, {0x6}]})
ioctl$TUNSETPERSIST(r0, 0x400454cb, 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: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-openat$tun-ioctl$TUNSETIFF-ioctl$TUNSETPERSIST-signalfd4-ioctl$TUNSETPERSIST
detailed listing:
executing program 0:
unshare(0x40020200)
r0 = openat$tun(0xffffffffffffff9c, &(0x7f0000000000), 0x0, 0x0)
ioctl$TUNSETIFF(r0, 0x400454ca, &(0x7f0000000200)={'\x00', 0x2})
ioctl$TUNSETPERSIST(r0, 0x400454cb, 0x1)
signalfd4(0xffffffffffffffff, 0x0, 0x0, 0x800)
ioctl$TUNSETPERSIST(r0, 0x400454cb, 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: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-openat$tun-ioctl$TUNSETIFF-seccomp$SECCOMP_SET_MODE_FILTER_LISTENER-signalfd4-ioctl$TUNSETPERSIST
detailed listing:
executing program 0:
unshare(0x40020200)
r0 = openat$tun(0xffffffffffffff9c, &(0x7f0000000000), 0x0, 0x0)
ioctl$TUNSETIFF(r0, 0x400454ca, &(0x7f0000000200)={'\x00', 0x2})
seccomp$SECCOMP_SET_MODE_FILTER_LISTENER(0x1, 0x0, &(0x7f0000000080)={0x2, &(0x7f0000000240)=[{0x50, 0x0, 0x0, 0x200000}, {0x6}]})
signalfd4(0xffffffffffffffff, 0x0, 0x0, 0x800)
ioctl$TUNSETPERSIST(r0, 0x400454cb, 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: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-openat$tun-ioctl$TUNSETPERSIST-seccomp$SECCOMP_SET_MODE_FILTER_LISTENER-signalfd4-ioctl$TUNSETPERSIST
detailed listing:
executing program 0:
unshare(0x40020200)
r0 = openat$tun(0xffffffffffffff9c, &(0x7f0000000000), 0x0, 0x0)
ioctl$TUNSETPERSIST(r0, 0x400454cb, 0x1)
seccomp$SECCOMP_SET_MODE_FILTER_LISTENER(0x1, 0x0, &(0x7f0000000080)={0x2, &(0x7f0000000240)=[{0x50, 0x0, 0x0, 0x200000}, {0x6}]})
signalfd4(0xffffffffffffffff, 0x0, 0x0, 0x800)
ioctl$TUNSETPERSIST(r0, 0x400454cb, 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: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-ioctl$TUNSETIFF-ioctl$TUNSETPERSIST-seccomp$SECCOMP_SET_MODE_FILTER_LISTENER-signalfd4-ioctl$TUNSETPERSIST
detailed listing:
executing program 0:
unshare(0x40020200)
ioctl$TUNSETIFF(0xffffffffffffffff, 0x400454ca, &(0x7f0000000200)={'\x00', 0x2})
ioctl$TUNSETPERSIST(0xffffffffffffffff, 0x400454cb, 0x1)
seccomp$SECCOMP_SET_MODE_FILTER_LISTENER(0x1, 0x0, &(0x7f0000000080)={0x2, &(0x7f0000000240)=[{0x50, 0x0, 0x0, 0x200000}, {0x6}]})
signalfd4(0xffffffffffffffff, 0x0, 0x0, 0x800)
ioctl$TUNSETPERSIST(0xffffffffffffffff, 0x400454cb, 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: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}}): openat$tun-ioctl$TUNSETIFF-ioctl$TUNSETPERSIST-seccomp$SECCOMP_SET_MODE_FILTER_LISTENER-signalfd4-ioctl$TUNSETPERSIST
detailed listing:
executing program 0:
r0 = openat$tun(0xffffffffffffff9c, &(0x7f0000000000), 0x0, 0x0)
ioctl$TUNSETIFF(r0, 0x400454ca, &(0x7f0000000200)={'\x00', 0x2})
ioctl$TUNSETPERSIST(r0, 0x400454cb, 0x1)
seccomp$SECCOMP_SET_MODE_FILTER_LISTENER(0x1, 0x0, &(0x7f0000000080)={0x2, &(0x7f0000000240)=[{0x50, 0x0, 0x0, 0x200000}, {0x6}]})
signalfd4(0xffffffffffffffff, 0x0, 0x0, 0x800)
ioctl$TUNSETPERSIST(r0, 0x400454cb, 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: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-openat$tun-ioctl$TUNSETIFF-ioctl$TUNSETPERSIST-seccomp$SECCOMP_SET_MODE_FILTER_LISTENER-signalfd4-ioctl$TUNSETPERSIST
detailed listing:
executing program 0:
unshare(0x40020200)
r0 = openat$tun(0xffffffffffffff9c, 0x0, 0x0, 0x0)
ioctl$TUNSETIFF(r0, 0x400454ca, &(0x7f0000000200)={'\x00', 0x2})
ioctl$TUNSETPERSIST(r0, 0x400454cb, 0x1)
seccomp$SECCOMP_SET_MODE_FILTER_LISTENER(0x1, 0x0, &(0x7f0000000080)={0x2, &(0x7f0000000240)=[{0x50, 0x0, 0x0, 0x200000}, {0x6}]})
signalfd4(0xffffffffffffffff, 0x0, 0x0, 0x800)
ioctl$TUNSETPERSIST(r0, 0x400454cb, 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: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-openat$tun-ioctl$TUNSETIFF-ioctl$TUNSETPERSIST-seccomp$SECCOMP_SET_MODE_FILTER_LISTENER-signalfd4-ioctl$TUNSETPERSIST
detailed listing:
executing program 0:
unshare(0x40020200)
r0 = openat$tun(0xffffffffffffff9c, &(0x7f0000000000), 0x0, 0x0)
ioctl$TUNSETIFF(r0, 0x400454ca, 0x0)
ioctl$TUNSETPERSIST(r0, 0x400454cb, 0x1)
seccomp$SECCOMP_SET_MODE_FILTER_LISTENER(0x1, 0x0, &(0x7f0000000080)={0x2, &(0x7f0000000240)=[{0x50, 0x0, 0x0, 0x200000}, {0x6}]})
signalfd4(0xffffffffffffffff, 0x0, 0x0, 0x800)
ioctl$TUNSETPERSIST(r0, 0x400454cb, 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: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-openat$tun-ioctl$TUNSETIFF-ioctl$TUNSETPERSIST-seccomp$SECCOMP_SET_MODE_FILTER_LISTENER-signalfd4-ioctl$TUNSETPERSIST
detailed listing:
executing program 0:
unshare(0x40020200)
r0 = openat$tun(0xffffffffffffff9c, &(0x7f0000000000), 0x0, 0x0)
ioctl$TUNSETIFF(r0, 0x400454ca, &(0x7f0000000200)={'\x00', 0x2})
ioctl$TUNSETPERSIST(r0, 0x400454cb, 0x1)
seccomp$SECCOMP_SET_MODE_FILTER_LISTENER(0x1, 0x0, 0x0)
signalfd4(0xffffffffffffffff, 0x0, 0x0, 0x800)
ioctl$TUNSETPERSIST(r0, 0x400454cb, 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: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-openat$tun-ioctl$TUNSETIFF-ioctl$TUNSETPERSIST-seccomp$SECCOMP_SET_MODE_FILTER_LISTENER-signalfd4-ioctl$TUNSETPERSIST
detailed listing:
executing program 0:
unshare(0x40020200)
r0 = openat$tun(0xffffffffffffff9c, &(0x7f0000000000), 0x0, 0x0)
ioctl$TUNSETIFF(r0, 0x400454ca, &(0x7f0000000200)={'\x00', 0x2})
ioctl$TUNSETPERSIST(r0, 0x400454cb, 0x1)
seccomp$SECCOMP_SET_MODE_FILTER_LISTENER(0x1, 0x0, &(0x7f0000000080)={0x0, 0x0})
signalfd4(0xffffffffffffffff, 0x0, 0x0, 0x800)
ioctl$TUNSETPERSIST(r0, 0x400454cb, 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: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-openat$tun-ioctl$TUNSETIFF-ioctl$TUNSETPERSIST-seccomp$SECCOMP_SET_MODE_FILTER_LISTENER-signalfd4-ioctl$TUNSETPERSIST
program crashed: panic: Decrementing non-positive ref count ADDR, owned by tun.tunEndpoint
simplifying C reproducer
testing compiled C program (duration=30s, {Threaded:false Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): unshare-openat$tun-ioctl$TUNSETIFF-ioctl$TUNSETPERSIST-seccomp$SECCOMP_SET_MODE_FILTER_LISTENER-signalfd4-ioctl$TUNSETPERSIST
program did not crash
testing compiled C program (duration=30s, {Threaded:true Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true 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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): unshare-openat$tun-ioctl$TUNSETIFF-ioctl$TUNSETPERSIST-seccomp$SECCOMP_SET_MODE_FILTER_LISTENER-signalfd4-ioctl$TUNSETPERSIST
program crashed: panic: Decrementing non-positive ref count ADDR, owned by tun.tunEndpoint
testing compiled C program (duration=30s, {Threaded:true Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): unshare-openat$tun-ioctl$TUNSETIFF-ioctl$TUNSETPERSIST-seccomp$SECCOMP_SET_MODE_FILTER_LISTENER-signalfd4-ioctl$TUNSETPERSIST
program crashed: panic: Decrementing non-positive ref count ADDR, owned by tun.tunEndpoint
testing compiled C program (duration=30s, {Threaded:true Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 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}}): unshare-openat$tun-ioctl$TUNSETIFF-ioctl$TUNSETPERSIST-seccomp$SECCOMP_SET_MODE_FILTER_LISTENER-signalfd4-ioctl$TUNSETPERSIST
program crashed: panic: Decrementing non-positive ref count ADDR, owned by tun.tunEndpoint
testing compiled C program (duration=30s, {Threaded:true Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): unshare-openat$tun-ioctl$TUNSETIFF-ioctl$TUNSETPERSIST-seccomp$SECCOMP_SET_MODE_FILTER_LISTENER-signalfd4-ioctl$TUNSETPERSIST
program crashed: panic: Decrementing non-positive ref count ADDR, owned by tun.tunEndpoint
testing compiled C program (duration=30s, {Threaded:true Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 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}}): unshare-openat$tun-ioctl$TUNSETIFF-ioctl$TUNSETPERSIST-seccomp$SECCOMP_SET_MODE_FILTER_LISTENER-signalfd4-ioctl$TUNSETPERSIST
program crashed: panic: Decrementing non-positive ref count ADDR, owned by tun.tunEndpoint
testing program (duration=30s, {Threaded:true Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): unshare-openat$tun-ioctl$TUNSETIFF-ioctl$TUNSETPERSIST-seccomp$SECCOMP_SET_MODE_FILTER_LISTENER-signalfd4-ioctl$TUNSETPERSIST
detailed listing:
executing program 0:
unshare(0x40020200)
r0 = openat$tun(0xffffffffffffff9c, &(0x7f0000000000), 0x0, 0x0)
ioctl$TUNSETIFF(r0, 0x400454ca, &(0x7f0000000200)={'\x00', 0x2})
ioctl$TUNSETPERSIST(r0, 0x400454cb, 0x1)
seccomp$SECCOMP_SET_MODE_FILTER_LISTENER(0x1, 0x0, &(0x7f0000000080)={0x2, &(0x7f0000000240)=[{0x50, 0x0, 0x0, 0x200000}, {0x6}]})
signalfd4(0xffffffffffffffff, 0x0, 0x0, 0x800)
ioctl$TUNSETPERSIST(r0, 0x400454cb, 0x0)

program crashed: panic: Decrementing non-positive ref count ADDR, owned by tun.tunEndpoint
validation run: crashed=true
testing program (duration=30s, {Threaded:true Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 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}}): unshare-openat$tun-ioctl$TUNSETIFF-ioctl$TUNSETPERSIST-seccomp$SECCOMP_SET_MODE_FILTER_LISTENER-signalfd4-ioctl$TUNSETPERSIST
detailed listing:
executing program 0:
unshare(0x40020200)
r0 = openat$tun(0xffffffffffffff9c, &(0x7f0000000000), 0x0, 0x0)
ioctl$TUNSETIFF(r0, 0x400454ca, &(0x7f0000000200)={'\x00', 0x2})
ioctl$TUNSETPERSIST(r0, 0x400454cb, 0x1)
seccomp$SECCOMP_SET_MODE_FILTER_LISTENER(0x1, 0x0, &(0x7f0000000080)={0x2, &(0x7f0000000240)=[{0x50, 0x0, 0x0, 0x200000}, {0x6}]})
signalfd4(0xffffffffffffffff, 0x0, 0x0, 0x800)
ioctl$TUNSETPERSIST(r0, 0x400454cb, 0x0)

program crashed: panic: Decrementing non-positive ref count ADDR, owned by tun.tunEndpoint
validation run: crashed=true
testing program (duration=30s, {Threaded:true Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 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}}): unshare-openat$tun-ioctl$TUNSETIFF-ioctl$TUNSETPERSIST-seccomp$SECCOMP_SET_MODE_FILTER_LISTENER-signalfd4-ioctl$TUNSETPERSIST
detailed listing:
executing program 0:
unshare(0x40020200)
r0 = openat$tun(0xffffffffffffff9c, &(0x7f0000000000), 0x0, 0x0)
ioctl$TUNSETIFF(r0, 0x400454ca, &(0x7f0000000200)={'\x00', 0x2})
ioctl$TUNSETPERSIST(r0, 0x400454cb, 0x1)
seccomp$SECCOMP_SET_MODE_FILTER_LISTENER(0x1, 0x0, &(0x7f0000000080)={0x2, &(0x7f0000000240)=[{0x50, 0x0, 0x0, 0x200000}, {0x6}]})
signalfd4(0xffffffffffffffff, 0x0, 0x0, 0x800)
ioctl$TUNSETPERSIST(r0, 0x400454cb, 0x0)

program crashed: panic: Decrementing non-positive ref count ADDR, owned by tun.tunEndpoint
validation run: crashed=true
reproducing took 8m14.061295219s
repro crashed as (corrupted=false):
panic: Decrementing non-positive ref count 0xc0008a0550, owned by tun.tunEndpoint

goroutine 544 gp=0xc000b0ba40 m=11 mp=0xc000206008 [running]:
panic({0x11bd080?, 0xc0008105b0?})
	GOROOT/src/runtime/panic.go:811 +0x168 fp=0xc0006377b0 sp=0xc000637700 pc=0x4788c8
gvisor.dev/gvisor/pkg/tcpip/link/tun.(*tunEndpointRefs).DecRef(0xc0008a0550, 0xc00003e130?)
	bazel-out/k8-fastbuild/bin/pkg/tcpip/link/tun/tun_endpoint_refs.go:127 +0x10c fp=0xc000637818 sp=0xc0006377b0 pc=0xbba5ec
gvisor.dev/gvisor/pkg/tcpip/link/tun.(*tunEndpoint).DecRef(...)
	pkg/tcpip/link/tun/device.go:415
gvisor.dev/gvisor/pkg/tcpip/link/tun.(*Device).Release(0xc000232968, {0x8066b5?, 0x0?})
	pkg/tcpip/link/tun/device.go:98 +0xb4 fp=0xc000637870 sp=0xc000637818 pc=0xbb7b94
gvisor.dev/gvisor/pkg/sentry/devices/tundev.(*tunFD).Release(0x0?, {0x1677650?, 0xc0007dec88?})
	pkg/sentry/devices/tundev/tundev.go:127 +0x25 fp=0xc000637898 sp=0xc000637870 pc=0xf0bdc5
gvisor.dev/gvisor/pkg/sentry/syscalls/linux.CloseRange.(*FileDescription).DecRef.func1()
	pkg/sentry/vfs/file_description.go:205 +0x2dd fp=0xc000637988 sp=0xc000637898 pc=0xc1f95d
gvisor.dev/gvisor/pkg/sentry/vfs.(*FileDescriptionRefs).DecRef(0xc000622dc0?, 0xc000637a48)
	bazel-out/k8-fastbuild/bin/pkg/sentry/vfs/file_description_refs.go:133 +0x42 fp=0xc0006379f0 sp=0xc000637988 pc=0x80d6a2
gvisor.dev/gvisor/pkg/sentry/vfs.(*FileDescription).DecRef(...)
	pkg/sentry/vfs/file_description.go:161
gvisor.dev/gvisor/pkg/sentry/syscalls/linux.CloseRange(0xc0007dec88, 0x49f519?, {{0x3}, {0x1e}, {0x0}, {0x5619310c7cb0}, {0x0}, {0x7020ae9ef}})
	pkg/sentry/syscalls/linux/sys_file.go:504 +0x1aa fp=0xc000637a78 sp=0xc0006379f0 pc=0xc1f60a
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).executeSyscall(0xc0007dec88, 0x1b4, {{0x3}, {0x1e}, {0x0}, {0x5619310c7cb0}, {0x0}, {0x7020ae9ef}})
	pkg/sentry/kernel/task_syscall.go:143 +0x655 fp=0xc000637ca8 sp=0xc000637a78 pc=0xa9f315
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallInvoke(0xc0007dec88, 0x1b4, {{0x3}, {0x1e}, {0x0}, {0x5619310c7cb0}, {0x0}, {0x7020ae9ef}})
	pkg/sentry/kernel/task_syscall.go:323 +0x45 fp=0xc000637d00 sp=0xc000637ca8 pc=0xaa0465
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallEnter(0xc0007dec88, 0x1b4, {{0x3}, {0x1e}, {0x0}, {0x5619310c7cb0}, {0x0}, {0x7020ae9ef}})
	pkg/sentry/kernel/task_syscall.go:283 +0x65 fp=0xc000637d50 sp=0xc000637d00 pc=0xaa0185
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscall(0xc000f000d0?)
	pkg/sentry/kernel/task_syscall.go:258 +0x2a5 fp=0xc000637e28 sp=0xc000637d50 pc=0xa9ff05
gvisor.dev/gvisor/pkg/sentry/kernel.(*runApp).execute(0xc001020480?, 0xc0007dec88)
	pkg/sentry/kernel/task_run.go:269 +0xebc fp=0xc000637f30 sp=0xc000637e28 pc=0xa95cdc
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).run(0xc0007dec88, 0x44)
	pkg/sentry/kernel/task_run.go:97 +0x214 fp=0xc000637fc0 sp=0xc000637f30 pc=0xa947b4
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start.gowrap1()
	pkg/sentry/kernel/task_start.go:416 +0x25 fp=0xc000637fe0 sp=0xc000637fc0 pc=0xa9dd65
runtime.goexit({})
	src/runtime/asm_amd64.s:1700 +0x1 fp=0xc000637fe8 sp=0xc000637fe0 pc=0x4816e1
created by gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start in goroutine 599
	pkg/sentry/kernel/task_start.go:416 +0xc5

final repro crashed as (corrupted=false):
panic: Decrementing non-positive ref count 0xc0008a0550, owned by tun.tunEndpoint

goroutine 544 gp=0xc000b0ba40 m=11 mp=0xc000206008 [running]:
panic({0x11bd080?, 0xc0008105b0?})
	GOROOT/src/runtime/panic.go:811 +0x168 fp=0xc0006377b0 sp=0xc000637700 pc=0x4788c8
gvisor.dev/gvisor/pkg/tcpip/link/tun.(*tunEndpointRefs).DecRef(0xc0008a0550, 0xc00003e130?)
	bazel-out/k8-fastbuild/bin/pkg/tcpip/link/tun/tun_endpoint_refs.go:127 +0x10c fp=0xc000637818 sp=0xc0006377b0 pc=0xbba5ec
gvisor.dev/gvisor/pkg/tcpip/link/tun.(*tunEndpoint).DecRef(...)
	pkg/tcpip/link/tun/device.go:415
gvisor.dev/gvisor/pkg/tcpip/link/tun.(*Device).Release(0xc000232968, {0x8066b5?, 0x0?})
	pkg/tcpip/link/tun/device.go:98 +0xb4 fp=0xc000637870 sp=0xc000637818 pc=0xbb7b94
gvisor.dev/gvisor/pkg/sentry/devices/tundev.(*tunFD).Release(0x0?, {0x1677650?, 0xc0007dec88?})
	pkg/sentry/devices/tundev/tundev.go:127 +0x25 fp=0xc000637898 sp=0xc000637870 pc=0xf0bdc5
gvisor.dev/gvisor/pkg/sentry/syscalls/linux.CloseRange.(*FileDescription).DecRef.func1()
	pkg/sentry/vfs/file_description.go:205 +0x2dd fp=0xc000637988 sp=0xc000637898 pc=0xc1f95d
gvisor.dev/gvisor/pkg/sentry/vfs.(*FileDescriptionRefs).DecRef(0xc000622dc0?, 0xc000637a48)
	bazel-out/k8-fastbuild/bin/pkg/sentry/vfs/file_description_refs.go:133 +0x42 fp=0xc0006379f0 sp=0xc000637988 pc=0x80d6a2
gvisor.dev/gvisor/pkg/sentry/vfs.(*FileDescription).DecRef(...)
	pkg/sentry/vfs/file_description.go:161
gvisor.dev/gvisor/pkg/sentry/syscalls/linux.CloseRange(0xc0007dec88, 0x49f519?, {{0x3}, {0x1e}, {0x0}, {0x5619310c7cb0}, {0x0}, {0x7020ae9ef}})
	pkg/sentry/syscalls/linux/sys_file.go:504 +0x1aa fp=0xc000637a78 sp=0xc0006379f0 pc=0xc1f60a
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).executeSyscall(0xc0007dec88, 0x1b4, {{0x3}, {0x1e}, {0x0}, {0x5619310c7cb0}, {0x0}, {0x7020ae9ef}})
	pkg/sentry/kernel/task_syscall.go:143 +0x655 fp=0xc000637ca8 sp=0xc000637a78 pc=0xa9f315
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallInvoke(0xc0007dec88, 0x1b4, {{0x3}, {0x1e}, {0x0}, {0x5619310c7cb0}, {0x0}, {0x7020ae9ef}})
	pkg/sentry/kernel/task_syscall.go:323 +0x45 fp=0xc000637d00 sp=0xc000637ca8 pc=0xaa0465
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallEnter(0xc0007dec88, 0x1b4, {{0x3}, {0x1e}, {0x0}, {0x5619310c7cb0}, {0x0}, {0x7020ae9ef}})
	pkg/sentry/kernel/task_syscall.go:283 +0x65 fp=0xc000637d50 sp=0xc000637d00 pc=0xaa0185
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscall(0xc000f000d0?)
	pkg/sentry/kernel/task_syscall.go:258 +0x2a5 fp=0xc000637e28 sp=0xc000637d50 pc=0xa9ff05
gvisor.dev/gvisor/pkg/sentry/kernel.(*runApp).execute(0xc001020480?, 0xc0007dec88)
	pkg/sentry/kernel/task_run.go:269 +0xebc fp=0xc000637f30 sp=0xc000637e28 pc=0xa95cdc
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).run(0xc0007dec88, 0x44)
	pkg/sentry/kernel/task_run.go:97 +0x214 fp=0xc000637fc0 sp=0xc000637f30 pc=0xa947b4
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start.gowrap1()
	pkg/sentry/kernel/task_start.go:416 +0x25 fp=0xc000637fe0 sp=0xc000637fc0 pc=0xa9dd65
runtime.goexit({})
	src/runtime/asm_amd64.s:1700 +0x1 fp=0xc000637fe8 sp=0xc000637fe0 pc=0x4816e1
created by gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start in goroutine 599
	pkg/sentry/kernel/task_start.go:416 +0xc5