Extracting prog: 24.17544434s
Minimizing prog: 5m31.150900923s
Simplifying prog options: 0s
Extracting C: 12.629594041s
Simplifying C: 1m28.454168471s


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: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-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: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-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: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-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: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-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: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-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: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-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: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-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: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}}): 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: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-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: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-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: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-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: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-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: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-openat$tun-ioctl$TUNSETIFF-ioctl$TUNSETPERSIST-seccomp$SECCOMP_SET_MODE_FILTER_LISTENER-signalfd4-ioctl$TUNSETPERSIST
program crashed: panic: Decrementing non-positive ref count ADDR, owned by tun.tunEndpoint
simplifying C reproducer
testing compiled C program (duration=30s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): unshare-openat$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 8m23.071067695s
repro crashed as (corrupted=false):
panic: Decrementing non-positive ref count 0xc001228230, owned by tun.tunEndpoint

goroutine 713 gp=0xc000fbe540 m=16 mp=0xc000c80008 [running]:
panic({0x12eb280?, 0xc00069c010?})
	GOROOT/src/runtime/panic.go:811 +0x168 fp=0xc001607780 sp=0xc0016076d0 pc=0x4788c8
gvisor.dev/gvisor/pkg/tcpip/link/tun.(*tunEndpointRefs).DecRef(0xc001228230, 0xc000600120?)
	bazel-out/k8-fastbuild/bin/pkg/tcpip/link/tun/tun_endpoint_refs.go:127 +0x154 fp=0xc0016077e8 sp=0xc001607780 pc=0xc8dd54
gvisor.dev/gvisor/pkg/tcpip/link/tun.(*tunEndpoint).DecRef(0xc0005ac540?, {0xc000f160d0?, 0x0?})
	pkg/tcpip/link/tun/device.go:415 +0x35 fp=0xc001607818 sp=0xc0016077e8 pc=0xc8cc95
gvisor.dev/gvisor/pkg/tcpip/link/tun.(*Device).Release(0xc001d1c128, {0x17db610, 0xc000e45908})
	pkg/tcpip/link/tun/device.go:98 +0xcb fp=0xc001607868 sp=0xc001607818 pc=0xc8a8eb
gvisor.dev/gvisor/pkg/sentry/devices/tundev.(*tunFD).Release(0xc000196d20?, {0x17db610?, 0xc000e45908?})
	pkg/sentry/devices/tundev/tundev.go:127 +0x2d fp=0xc001607890 sp=0xc001607868 pc=0x102520d
gvisor.dev/gvisor/pkg/sentry/vfs.(*FileDescription).DecRef.func1()
	pkg/sentry/vfs/file_description.go:205 +0x3a8 fp=0xc001607970 sp=0xc001607890 pc=0x848d28
gvisor.dev/gvisor/pkg/sentry/vfs.(*FileDescriptionRefs).DecRef(0x17db610?, 0xc0016079e8)
	bazel-out/k8-fastbuild/bin/pkg/sentry/vfs/file_description_refs.go:133 +0x75 fp=0xc0016079d8 sp=0xc001607970 pc=0x84fbd5
gvisor.dev/gvisor/pkg/sentry/vfs.(*FileDescription).DecRef(0xc000c961c0?, {0x17db610?, 0xc000e45908?})
	pkg/sentry/vfs/file_description.go:161 +0x49 fp=0xc001607a18 sp=0xc0016079d8 pc=0x848949
gvisor.dev/gvisor/pkg/sentry/syscalls/linux.CloseRange(0xc000e45908, 0x7f48c4318000?, {{0x3}, {0x1e}, {0x0}, {0x558de5c8ccb0}, {0x0}, {0x788ae69ef}})
	pkg/sentry/syscalls/linux/sys_file.go:504 +0x268 fp=0xc001607a80 sp=0xc001607a18 pc=0xcfc568
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).executeSyscall(0xc000e45908, 0x1b4, {{0x3}, {0x1e}, {0x0}, {0x558de5c8ccb0}, {0x0}, {0x788ae69ef}})
	pkg/sentry/kernel/task_syscall.go:143 +0x809 fp=0xc001607cb0 sp=0xc001607a80 pc=0xb488c9
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallInvoke(0xc000e45908, 0x1b4, {{0x3}, {0x1e}, {0x0}, {0x558de5c8ccb0}, {0x0}, {0x788ae69ef}})
	pkg/sentry/kernel/task_syscall.go:323 +0x4e fp=0xc001607d08 sp=0xc001607cb0 pc=0xb49eae
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallEnter(0xc000e45908, 0x1b4, {{0x3}, {0x1e}, {0x0}, {0x558de5c8ccb0}, {0x0}, {0x788ae69ef}})
	pkg/sentry/kernel/task_syscall.go:283 +0x7d fp=0xc001607d58 sp=0xc001607d08 pc=0xb49a3d
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscall(0xc0006d62c0?)
	pkg/sentry/kernel/task_syscall.go:258 +0x349 fp=0xc001607e30 sp=0xc001607d58 pc=0xb49709
gvisor.dev/gvisor/pkg/sentry/kernel.(*runApp).execute(0xc0002c7b00?, 0xc000e45908)
	pkg/sentry/kernel/task_run.go:269 +0x12cb fp=0xc001607f38 sp=0xc001607e30 pc=0xb3d22b
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).run(0xc000e45908, 0x59)
	pkg/sentry/kernel/task_run.go:97 +0x27d fp=0xc001607fc0 sp=0xc001607f38 pc=0xb3b89d
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start.gowrap1()
	pkg/sentry/kernel/task_start.go:416 +0x25 fp=0xc001607fe0 sp=0xc001607fc0 pc=0xb46e45
runtime.goexit({})
	src/runtime/asm_amd64.s:1700 +0x1 fp=0xc001607fe8 sp=0xc001607fe0 pc=0x4816e1
created by gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start in goroutine 936
	pkg/sentry/kernel/task_start.go:416 +0xd8

final repro crashed as (corrupted=false):
panic: Decrementing non-positive ref count 0xc001228230, owned by tun.tunEndpoint

goroutine 713 gp=0xc000fbe540 m=16 mp=0xc000c80008 [running]:
panic({0x12eb280?, 0xc00069c010?})
	GOROOT/src/runtime/panic.go:811 +0x168 fp=0xc001607780 sp=0xc0016076d0 pc=0x4788c8
gvisor.dev/gvisor/pkg/tcpip/link/tun.(*tunEndpointRefs).DecRef(0xc001228230, 0xc000600120?)
	bazel-out/k8-fastbuild/bin/pkg/tcpip/link/tun/tun_endpoint_refs.go:127 +0x154 fp=0xc0016077e8 sp=0xc001607780 pc=0xc8dd54
gvisor.dev/gvisor/pkg/tcpip/link/tun.(*tunEndpoint).DecRef(0xc0005ac540?, {0xc000f160d0?, 0x0?})
	pkg/tcpip/link/tun/device.go:415 +0x35 fp=0xc001607818 sp=0xc0016077e8 pc=0xc8cc95
gvisor.dev/gvisor/pkg/tcpip/link/tun.(*Device).Release(0xc001d1c128, {0x17db610, 0xc000e45908})
	pkg/tcpip/link/tun/device.go:98 +0xcb fp=0xc001607868 sp=0xc001607818 pc=0xc8a8eb
gvisor.dev/gvisor/pkg/sentry/devices/tundev.(*tunFD).Release(0xc000196d20?, {0x17db610?, 0xc000e45908?})
	pkg/sentry/devices/tundev/tundev.go:127 +0x2d fp=0xc001607890 sp=0xc001607868 pc=0x102520d
gvisor.dev/gvisor/pkg/sentry/vfs.(*FileDescription).DecRef.func1()
	pkg/sentry/vfs/file_description.go:205 +0x3a8 fp=0xc001607970 sp=0xc001607890 pc=0x848d28
gvisor.dev/gvisor/pkg/sentry/vfs.(*FileDescriptionRefs).DecRef(0x17db610?, 0xc0016079e8)
	bazel-out/k8-fastbuild/bin/pkg/sentry/vfs/file_description_refs.go:133 +0x75 fp=0xc0016079d8 sp=0xc001607970 pc=0x84fbd5
gvisor.dev/gvisor/pkg/sentry/vfs.(*FileDescription).DecRef(0xc000c961c0?, {0x17db610?, 0xc000e45908?})
	pkg/sentry/vfs/file_description.go:161 +0x49 fp=0xc001607a18 sp=0xc0016079d8 pc=0x848949
gvisor.dev/gvisor/pkg/sentry/syscalls/linux.CloseRange(0xc000e45908, 0x7f48c4318000?, {{0x3}, {0x1e}, {0x0}, {0x558de5c8ccb0}, {0x0}, {0x788ae69ef}})
	pkg/sentry/syscalls/linux/sys_file.go:504 +0x268 fp=0xc001607a80 sp=0xc001607a18 pc=0xcfc568
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).executeSyscall(0xc000e45908, 0x1b4, {{0x3}, {0x1e}, {0x0}, {0x558de5c8ccb0}, {0x0}, {0x788ae69ef}})
	pkg/sentry/kernel/task_syscall.go:143 +0x809 fp=0xc001607cb0 sp=0xc001607a80 pc=0xb488c9
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallInvoke(0xc000e45908, 0x1b4, {{0x3}, {0x1e}, {0x0}, {0x558de5c8ccb0}, {0x0}, {0x788ae69ef}})
	pkg/sentry/kernel/task_syscall.go:323 +0x4e fp=0xc001607d08 sp=0xc001607cb0 pc=0xb49eae
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallEnter(0xc000e45908, 0x1b4, {{0x3}, {0x1e}, {0x0}, {0x558de5c8ccb0}, {0x0}, {0x788ae69ef}})
	pkg/sentry/kernel/task_syscall.go:283 +0x7d fp=0xc001607d58 sp=0xc001607d08 pc=0xb49a3d
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscall(0xc0006d62c0?)
	pkg/sentry/kernel/task_syscall.go:258 +0x349 fp=0xc001607e30 sp=0xc001607d58 pc=0xb49709
gvisor.dev/gvisor/pkg/sentry/kernel.(*runApp).execute(0xc0002c7b00?, 0xc000e45908)
	pkg/sentry/kernel/task_run.go:269 +0x12cb fp=0xc001607f38 sp=0xc001607e30 pc=0xb3d22b
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).run(0xc000e45908, 0x59)
	pkg/sentry/kernel/task_run.go:97 +0x27d fp=0xc001607fc0 sp=0xc001607f38 pc=0xb3b89d
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start.gowrap1()
	pkg/sentry/kernel/task_start.go:416 +0x25 fp=0xc001607fe0 sp=0xc001607fc0 pc=0xb46e45
runtime.goexit({})
	src/runtime/asm_amd64.s:1700 +0x1 fp=0xc001607fe8 sp=0xc001607fe0 pc=0x4816e1
created by gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start in goroutine 936
	pkg/sentry/kernel/task_start.go:416 +0xd8