Extracting prog: 26.776382831s
Minimizing prog: 4m21.858673523s
Simplifying prog options: 37.273297166s
Extracting C: 12.333474922s
Simplifying C: 1m34.169850553s


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}}): socket$unix-mount$9p_rdma-socket$inet6-write$P9_RSTATu-syz_open_procfs$userns-close-syz_clone-setns
detailed listing:
executing program 0:
socket$unix(0x1, 0x5, 0x0)
mount$9p_rdma(0x0, 0x0, 0x0, 0x8000e0, 0x0)
socket$inet6(0x10, 0x3, 0x0)
write$P9_RSTATu(0xffffffffffffffff, 0x0, 0x0)
r0 = syz_open_procfs$userns(0x0, &(0x7f0000000200))
close(r0)
syz_clone(0xa4a01040, 0x0, 0x0, 0x0, 0x0, 0x0)
setns(r0, 0x20000000)

program crashed: panic: Incrementing non-positive count ADDR on nsfs.Inode
single: successfully extracted reproducer
found reproducer with 8 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}}): socket$unix-mount$9p_rdma-socket$inet6-write$P9_RSTATu-syz_open_procfs$userns-close-syz_clone
detailed listing:
executing program 0:
socket$unix(0x1, 0x5, 0x0)
mount$9p_rdma(0x0, 0x0, 0x0, 0x8000e0, 0x0)
socket$inet6(0x10, 0x3, 0x0)
write$P9_RSTATu(0xffffffffffffffff, 0x0, 0x0)
r0 = syz_open_procfs$userns(0x0, &(0x7f0000000200))
close(r0)
syz_clone(0xa4a01040, 0x0, 0x0, 0x0, 0x0, 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}}): socket$unix-mount$9p_rdma-socket$inet6-write$P9_RSTATu-syz_open_procfs$userns-close-setns
detailed listing:
executing program 0:
socket$unix(0x1, 0x5, 0x0)
mount$9p_rdma(0x0, 0x0, 0x0, 0x8000e0, 0x0)
socket$inet6(0x10, 0x3, 0x0)
write$P9_RSTATu(0xffffffffffffffff, 0x0, 0x0)
r0 = syz_open_procfs$userns(0x0, &(0x7f0000000200))
close(r0)
setns(r0, 0x20000000)

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}}): socket$unix-mount$9p_rdma-socket$inet6-write$P9_RSTATu-syz_open_procfs$userns-syz_clone-setns
detailed listing:
executing program 0:
socket$unix(0x1, 0x5, 0x0)
mount$9p_rdma(0x0, 0x0, 0x0, 0x8000e0, 0x0)
socket$inet6(0x10, 0x3, 0x0)
write$P9_RSTATu(0xffffffffffffffff, 0x0, 0x0)
r0 = syz_open_procfs$userns(0x0, &(0x7f0000000200))
syz_clone(0xa4a01040, 0x0, 0x0, 0x0, 0x0, 0x0)
setns(r0, 0x20000000)

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}}): socket$unix-mount$9p_rdma-socket$inet6-write$P9_RSTATu-close-syz_clone-setns
detailed listing:
executing program 0:
socket$unix(0x1, 0x5, 0x0)
mount$9p_rdma(0x0, 0x0, 0x0, 0x8000e0, 0x0)
socket$inet6(0x10, 0x3, 0x0)
write$P9_RSTATu(0xffffffffffffffff, 0x0, 0x0)
close(0xffffffffffffffff)
syz_clone(0xa4a01040, 0x0, 0x0, 0x0, 0x0, 0x0)
setns(0xffffffffffffffff, 0x20000000)

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}}): socket$unix-mount$9p_rdma-socket$inet6-syz_open_procfs$userns-close-syz_clone-setns
detailed listing:
executing program 0:
socket$unix(0x1, 0x5, 0x0)
mount$9p_rdma(0x0, 0x0, 0x0, 0x8000e0, 0x0)
socket$inet6(0x10, 0x3, 0x0)
r0 = syz_open_procfs$userns(0x0, &(0x7f0000000200))
close(r0)
syz_clone(0xa4a01040, 0x0, 0x0, 0x0, 0x0, 0x0)
setns(r0, 0x20000000)

program crashed: panic: Incrementing non-positive count ADDR on nsfs.Inode
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}}): socket$unix-mount$9p_rdma-syz_open_procfs$userns-close-syz_clone-setns
detailed listing:
executing program 0:
socket$unix(0x1, 0x5, 0x0)
mount$9p_rdma(0x0, 0x0, 0x0, 0x8000e0, 0x0)
r0 = syz_open_procfs$userns(0x0, &(0x7f0000000200))
close(r0)
syz_clone(0xa4a01040, 0x0, 0x0, 0x0, 0x0, 0x0)
setns(r0, 0x20000000)

program crashed: panic: Incrementing non-positive count ADDR on nsfs.Inode
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}}): socket$unix-syz_open_procfs$userns-close-syz_clone-setns
detailed listing:
executing program 0:
socket$unix(0x1, 0x5, 0x0)
r0 = syz_open_procfs$userns(0x0, &(0x7f0000000200))
close(r0)
syz_clone(0xa4a01040, 0x0, 0x0, 0x0, 0x0, 0x0)
setns(r0, 0x20000000)

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}}): mount$9p_rdma-syz_open_procfs$userns-close-syz_clone-setns
detailed listing:
executing program 0:
mount$9p_rdma(0x0, 0x0, 0x0, 0x8000e0, 0x0)
r0 = syz_open_procfs$userns(0x0, &(0x7f0000000200))
close(r0)
syz_clone(0xa4a01040, 0x0, 0x0, 0x0, 0x0, 0x0)
setns(r0, 0x20000000)

program crashed: panic: Incrementing non-positive count ADDR on nsfs.Inode
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}}): mount$9p_rdma-syz_open_procfs$userns-close-syz_clone-setns
detailed listing:
executing program 0:
mount$9p_rdma(0x0, 0x0, 0x0, 0x8000e0, 0x0)
r0 = syz_open_procfs$userns(0x0, 0x0)
close(r0)
syz_clone(0xa4a01040, 0x0, 0x0, 0x0, 0x0, 0x0)
setns(r0, 0x20000000)

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}}): mount$9p_rdma-syz_open_procfs$userns-close-syz_clone-setns
program did not crash
simplifying guilty program options
testing 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}}): mount$9p_rdma-syz_open_procfs$userns-close-syz_clone-setns
detailed listing:
executing program 0:
mount$9p_rdma(0x0, 0x0, 0x0, 0x8000e0, 0x0)
r0 = syz_open_procfs$userns(0x0, &(0x7f0000000200))
close(r0)
syz_clone(0xa4a01040, 0x0, 0x0, 0x0, 0x0, 0x0)
setns(r0, 0x20000000)

program crashed: panic: Incrementing non-positive count ADDR on nsfs.Inode
extracting 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}}): mount$9p_rdma-syz_open_procfs$userns-close-syz_clone-setns
program crashed: panic: Incrementing non-positive count ADDR on nsfs.Inode
simplifying C reproducer
testing compiled C program (duration=30s, {Threaded:false 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}}): mount$9p_rdma-syz_open_procfs$userns-close-syz_clone-setns
program did not crash
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}}): mount$9p_rdma-syz_open_procfs$userns-close-syz_clone-setns
program did not crash
testing compiled C program (duration=30s, {Threaded:false Repeat:true RepeatTimes:0 Procs:4 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}}): mount$9p_rdma-syz_open_procfs$userns-close-syz_clone-setns
program crashed: panic: Incrementing non-positive count ADDR on nsfs.Inode
testing compiled C program (duration=30s, {Threaded:false Repeat:true RepeatTimes:0 Procs:4 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}}): mount$9p_rdma-syz_open_procfs$userns-close-syz_clone-setns
program crashed: panic: Incrementing non-positive count ADDR on nsfs.Inode
testing compiled C program (duration=30s, {Threaded:false Repeat:true RepeatTimes:0 Procs:4 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}}): mount$9p_rdma-syz_open_procfs$userns-close-syz_clone-setns
program crashed: panic: Incrementing non-positive count ADDR on nsfs.Inode
testing compiled C program (duration=30s, {Threaded:false Repeat:true RepeatTimes:0 Procs:4 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}}): mount$9p_rdma-syz_open_procfs$userns-close-syz_clone-setns
program crashed: panic: Incrementing non-positive count ADDR on nsfs.Inode
testing program (duration=30s, {Threaded:false Repeat:true RepeatTimes:0 Procs:4 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}}): mount$9p_rdma-syz_open_procfs$userns-close-syz_clone-setns
detailed listing:
executing program 0:
mount$9p_rdma(0x0, 0x0, 0x0, 0x8000e0, 0x0)
r0 = syz_open_procfs$userns(0x0, &(0x7f0000000200))
close(r0)
syz_clone(0xa4a01040, 0x0, 0x0, 0x0, 0x0, 0x0)
setns(r0, 0x20000000)

program did not crash
validation run: crashed=false
testing program (duration=30s, {Threaded:false Repeat:true RepeatTimes:0 Procs:4 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}}): mount$9p_rdma-syz_open_procfs$userns-close-syz_clone-setns
detailed listing:
executing program 0:
mount$9p_rdma(0x0, 0x0, 0x0, 0x8000e0, 0x0)
r0 = syz_open_procfs$userns(0x0, &(0x7f0000000200))
close(r0)
syz_clone(0xa4a01040, 0x0, 0x0, 0x0, 0x0, 0x0)
setns(r0, 0x20000000)

program crashed: panic: Incrementing non-positive count ADDR on nsfs.Inode
validation run: crashed=true
testing program (duration=30s, {Threaded:false Repeat:true RepeatTimes:0 Procs:4 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}}): mount$9p_rdma-syz_open_procfs$userns-close-syz_clone-setns
detailed listing:
executing program 0:
mount$9p_rdma(0x0, 0x0, 0x0, 0x8000e0, 0x0)
r0 = syz_open_procfs$userns(0x0, &(0x7f0000000200))
close(r0)
syz_clone(0xa4a01040, 0x0, 0x0, 0x0, 0x0, 0x0)
setns(r0, 0x20000000)

program did not crash
validation run: crashed=false
testing program (duration=30s, {Threaded:false Repeat:true RepeatTimes:0 Procs:4 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}}): mount$9p_rdma-syz_open_procfs$userns-close-syz_clone-setns
detailed listing:
executing program 0:
mount$9p_rdma(0x0, 0x0, 0x0, 0x8000e0, 0x0)
r0 = syz_open_procfs$userns(0x0, &(0x7f0000000200))
close(r0)
syz_clone(0xa4a01040, 0x0, 0x0, 0x0, 0x0, 0x0)
setns(r0, 0x20000000)

program did not crash
validation run: crashed=false
testing program (duration=30s, {Threaded:false Repeat:true RepeatTimes:0 Procs:4 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}}): mount$9p_rdma-syz_open_procfs$userns-close-syz_clone-setns
detailed listing:
executing program 0:
mount$9p_rdma(0x0, 0x0, 0x0, 0x8000e0, 0x0)
r0 = syz_open_procfs$userns(0x0, &(0x7f0000000200))
close(r0)
syz_clone(0xa4a01040, 0x0, 0x0, 0x0, 0x0, 0x0)
setns(r0, 0x20000000)

program crashed: panic: Incrementing non-positive count ADDR on nsfs.Inode
validation run: crashed=true
testing program (duration=30s, {Threaded:false Repeat:true RepeatTimes:0 Procs:4 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}}): mount$9p_rdma-syz_open_procfs$userns-close-syz_clone-setns
detailed listing:
executing program 0:
mount$9p_rdma(0x0, 0x0, 0x0, 0x8000e0, 0x0)
r0 = syz_open_procfs$userns(0x0, &(0x7f0000000200))
close(r0)
syz_clone(0xa4a01040, 0x0, 0x0, 0x0, 0x0, 0x0)
setns(r0, 0x20000000)

program crashed: panic: Incrementing non-positive count ADDR on nsfs.Inode
validation run: crashed=true
reproducing took 10m17.070790378s
repro crashed as (corrupted=false):
panic: Incrementing non-positive count 0xc000c04ae8 on nsfs.Inode

goroutine 18923 gp=0xc000a48e00 m=34 mp=0xc000a90808 [running]:
panic({0x12149a0?, 0xc0005b6730?})
	GOROOT/src/runtime/panic.go:802 +0x168 fp=0xc00079b8c0 sp=0xc00079b810 pc=0x47fec8
gvisor.dev/gvisor/pkg/sentry/fsimpl/nsfs.(*inodeRefs).IncRef(0xc000c04ae8)
	bazel-out/k8-fastbuild/bin/pkg/sentry/fsimpl/nsfs/inode_refs.go:82 +0xe8 fp=0xc00079b928 sp=0xc00079b8c0 pc=0x97b9c8
gvisor.dev/gvisor/pkg/sentry/kernel.(*PIDNamespace).IncRef(...)
	pkg/sentry/kernel/threads.go:258
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).GetPIDNamespace(...)
	pkg/sentry/kernel/threads.go:577
gvisor.dev/gvisor/pkg/sentry/kernel.(*namespaceSet).initFromTask(0xc00079b988, 0xffffffff?, 0xc000e2cc88, 0x20000000)
	pkg/sentry/kernel/task_clone.go:532 +0x85 fp=0xc00079b950 sp=0xc00079b928 pc=0xadf8c5
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Setns(0xc001205208, 0xc001248c80, 0x20000000)
	pkg/sentry/kernel/task_clone.go:612 +0x225 fp=0xc00079ba00 sp=0xc00079b950 pc=0xadff65
gvisor.dev/gvisor/pkg/sentry/syscalls/linux.Setns(0xc001205208, 0x0?, {{0x3}, {0x20000000}, {0x0}, {0x0}, {0x0}, {0x0}})
	pkg/sentry/syscalls/linux/sys_thread.go:479 +0xa5 fp=0xc00079ba78 sp=0xc00079ba00 pc=0xcc4265
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).executeSyscall(0xc001205208, 0x134, {{0x3}, {0x20000000}, {0x0}, {0x0}, {0x0}, {0x0}})
	pkg/sentry/kernel/task_syscall.go:143 +0x655 fp=0xc00079bca8 sp=0xc00079ba78 pc=0xafb7f5
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallInvoke(0xc001205208, 0x134, {{0x3}, {0x20000000}, {0x0}, {0x0}, {0x0}, {0x0}})
	pkg/sentry/kernel/task_syscall.go:323 +0x45 fp=0xc00079bd00 sp=0xc00079bca8 pc=0xafc945
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallEnter(0xc001205208, 0x134, {{0x3}, {0x20000000}, {0x0}, {0x0}, {0x0}, {0x0}})
	pkg/sentry/kernel/task_syscall.go:283 +0x65 fp=0xc00079bd50 sp=0xc00079bd00 pc=0xafc665
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscall(0xc000786750?)
	pkg/sentry/kernel/task_syscall.go:258 +0x2a5 fp=0xc00079be28 sp=0xc00079bd50 pc=0xafc3e5
gvisor.dev/gvisor/pkg/sentry/kernel.(*runApp).execute(0xc000a6abd0?, 0xc001205208)
	pkg/sentry/kernel/task_run.go:258 +0xfbc fp=0xc00079bf30 sp=0xc00079be28 pc=0xaf1f3c
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).run(0xc001205208, 0xfe9)
	pkg/sentry/kernel/task_run.go:89 +0x202 fp=0xc00079bfc0 sp=0xc00079bf30 pc=0xaf09c2
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start.gowrap1()
	pkg/sentry/kernel/task_start.go:416 +0x25 fp=0xc00079bfe0 sp=0xc00079bfc0 pc=0xafa265
runtime.goexit({})
	src/runtime/asm_amd64.s:1693 +0x1 fp=0xc00079bfe8 sp=0xc00079bfe0 pc=0x489161
created by gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start in goroutine 507
	pkg/sentry/kernel/task_start.go:416 +0xc5

final repro crashed as (corrupted=false):
panic: Incrementing non-positive count 0xc000c04ae8 on nsfs.Inode

goroutine 18923 gp=0xc000a48e00 m=34 mp=0xc000a90808 [running]:
panic({0x12149a0?, 0xc0005b6730?})
	GOROOT/src/runtime/panic.go:802 +0x168 fp=0xc00079b8c0 sp=0xc00079b810 pc=0x47fec8
gvisor.dev/gvisor/pkg/sentry/fsimpl/nsfs.(*inodeRefs).IncRef(0xc000c04ae8)
	bazel-out/k8-fastbuild/bin/pkg/sentry/fsimpl/nsfs/inode_refs.go:82 +0xe8 fp=0xc00079b928 sp=0xc00079b8c0 pc=0x97b9c8
gvisor.dev/gvisor/pkg/sentry/kernel.(*PIDNamespace).IncRef(...)
	pkg/sentry/kernel/threads.go:258
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).GetPIDNamespace(...)
	pkg/sentry/kernel/threads.go:577
gvisor.dev/gvisor/pkg/sentry/kernel.(*namespaceSet).initFromTask(0xc00079b988, 0xffffffff?, 0xc000e2cc88, 0x20000000)
	pkg/sentry/kernel/task_clone.go:532 +0x85 fp=0xc00079b950 sp=0xc00079b928 pc=0xadf8c5
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Setns(0xc001205208, 0xc001248c80, 0x20000000)
	pkg/sentry/kernel/task_clone.go:612 +0x225 fp=0xc00079ba00 sp=0xc00079b950 pc=0xadff65
gvisor.dev/gvisor/pkg/sentry/syscalls/linux.Setns(0xc001205208, 0x0?, {{0x3}, {0x20000000}, {0x0}, {0x0}, {0x0}, {0x0}})
	pkg/sentry/syscalls/linux/sys_thread.go:479 +0xa5 fp=0xc00079ba78 sp=0xc00079ba00 pc=0xcc4265
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).executeSyscall(0xc001205208, 0x134, {{0x3}, {0x20000000}, {0x0}, {0x0}, {0x0}, {0x0}})
	pkg/sentry/kernel/task_syscall.go:143 +0x655 fp=0xc00079bca8 sp=0xc00079ba78 pc=0xafb7f5
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallInvoke(0xc001205208, 0x134, {{0x3}, {0x20000000}, {0x0}, {0x0}, {0x0}, {0x0}})
	pkg/sentry/kernel/task_syscall.go:323 +0x45 fp=0xc00079bd00 sp=0xc00079bca8 pc=0xafc945
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallEnter(0xc001205208, 0x134, {{0x3}, {0x20000000}, {0x0}, {0x0}, {0x0}, {0x0}})
	pkg/sentry/kernel/task_syscall.go:283 +0x65 fp=0xc00079bd50 sp=0xc00079bd00 pc=0xafc665
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscall(0xc000786750?)
	pkg/sentry/kernel/task_syscall.go:258 +0x2a5 fp=0xc00079be28 sp=0xc00079bd50 pc=0xafc3e5
gvisor.dev/gvisor/pkg/sentry/kernel.(*runApp).execute(0xc000a6abd0?, 0xc001205208)
	pkg/sentry/kernel/task_run.go:258 +0xfbc fp=0xc00079bf30 sp=0xc00079be28 pc=0xaf1f3c
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).run(0xc001205208, 0xfe9)
	pkg/sentry/kernel/task_run.go:89 +0x202 fp=0xc00079bfc0 sp=0xc00079bf30 pc=0xaf09c2
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start.gowrap1()
	pkg/sentry/kernel/task_start.go:416 +0x25 fp=0xc00079bfe0 sp=0xc00079bfc0 pc=0xafa265
runtime.goexit({})
	src/runtime/asm_amd64.s:1693 +0x1 fp=0xc00079bfe8 sp=0xc00079bfe0 pc=0x489161
created by gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start in goroutine 507
	pkg/sentry/kernel/task_start.go:416 +0xc5