Extracting prog: 37.165605764s
Minimizing prog: 39m4.99164779s
Simplifying prog options: 0s
Extracting C: 1m57.198170101s
Simplifying C: 11m15.992780559s


extracting reproducer from 14 programs
testing a last program of every proc
single: executing 5 programs separately with timeout 30s
testing program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 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:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-write-openat-write-openat-write-mkdirat-mount-openat-write-openat-write-openat-write
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./nfsd\x00', 0x1ff)
mount(&(0x7f0000000040)=@filename='nfsd\x00', &(0x7f0000000080)='./nfsd\x00', &(0x7f00000000c0)='nfsd\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000700)='./nfsd/versions\x00', 0x2, 0x0)
write(r0, &(0x7f0000000740)='-2 -3 +4\n', 0x9)
r1 = openat(0xffffffffffffff9c, &(0x7f0000000500)='./nfsd/portlist\x00', 0x2, 0x0)
write(r1, &(0x7f0000000540)='tcp 2049\n', 0x9)
r2 = openat(0xffffffffffffff9c, &(0x7f0000000100)='./nfsd/threads\x00', 0x2, 0x0)
write(r2, &(0x7f0000000140)='1\n', 0x2)
mkdirat(0xffffffffffffff9c, &(0x7f0000000600)='./proc\x00', 0x1ff)
mount(0x0, &(0x7f0000000640)='./proc\x00', &(0x7f0000000680)='proc\x00', 0x0, 0x0)
r3 = openat(0xffffffffffffff9c, &(0x7f0000000180)='./proc/net/rpc/auth.unix.ip/channel\x00', 0x2, 0x0)
write(r3, &(0x7f00000001c0)='nfsd 127.0.0.1 2147483647 testdomain\n', 0x25)
r4 = openat(0xffffffffffffff9c, &(0x7f0000000200)='./proc/net/rpc/nfsd.export/channel\x00', 0x2, 0x0)
write(r4, &(0x7f0000000240)='testdomain / 2147483647 8194 0 0 0\n', 0x23)
r5 = openat(0xffffffffffffff9c, &(0x7f0000000280)='./proc/net/rpc/nfsd.fh/channel\x00', 0x2, 0x0)
write(r5, &(0x7f00000002c0)='testdomain 1 \\x00000000 2147483647 /\n', 0x25)

program crashed: kernel BUG in svc_destroy
single: successfully extracted reproducer
found reproducer with 16 syscalls
minimizing guilty program
testing program (duration=45.403450522s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 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:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-write-openat-write-openat-write-mkdirat-mount-openat-write-openat-write-openat
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./nfsd\x00', 0x1ff)
mount(&(0x7f0000000040)=@filename='nfsd\x00', &(0x7f0000000080)='./nfsd\x00', &(0x7f00000000c0)='nfsd\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000700)='./nfsd/versions\x00', 0x2, 0x0)
write(r0, &(0x7f0000000740)='-2 -3 +4\n', 0x9)
r1 = openat(0xffffffffffffff9c, &(0x7f0000000500)='./nfsd/portlist\x00', 0x2, 0x0)
write(r1, &(0x7f0000000540)='tcp 2049\n', 0x9)
r2 = openat(0xffffffffffffff9c, &(0x7f0000000100)='./nfsd/threads\x00', 0x2, 0x0)
write(r2, &(0x7f0000000140)='1\n', 0x2)
mkdirat(0xffffffffffffff9c, &(0x7f0000000600)='./proc\x00', 0x1ff)
mount(0x0, &(0x7f0000000640)='./proc\x00', &(0x7f0000000680)='proc\x00', 0x0, 0x0)
r3 = openat(0xffffffffffffff9c, &(0x7f0000000180)='./proc/net/rpc/auth.unix.ip/channel\x00', 0x2, 0x0)
write(r3, &(0x7f00000001c0)='nfsd 127.0.0.1 2147483647 testdomain\n', 0x25)
r4 = openat(0xffffffffffffff9c, &(0x7f0000000200)='./proc/net/rpc/nfsd.export/channel\x00', 0x2, 0x0)
write(r4, &(0x7f0000000240)='testdomain / 2147483647 8194 0 0 0\n', 0x23)
openat(0xffffffffffffff9c, &(0x7f0000000280)='./proc/net/rpc/nfsd.fh/channel\x00', 0x2, 0x0)

program crashed: kernel BUG in svc_destroy
testing program (duration=45.403450522s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 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:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-write-openat-write-openat-write-mkdirat-mount-openat-write-openat-write
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./nfsd\x00', 0x1ff)
mount(&(0x7f0000000040)=@filename='nfsd\x00', &(0x7f0000000080)='./nfsd\x00', &(0x7f00000000c0)='nfsd\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000700)='./nfsd/versions\x00', 0x2, 0x0)
write(r0, &(0x7f0000000740)='-2 -3 +4\n', 0x9)
r1 = openat(0xffffffffffffff9c, &(0x7f0000000500)='./nfsd/portlist\x00', 0x2, 0x0)
write(r1, &(0x7f0000000540)='tcp 2049\n', 0x9)
r2 = openat(0xffffffffffffff9c, &(0x7f0000000100)='./nfsd/threads\x00', 0x2, 0x0)
write(r2, &(0x7f0000000140)='1\n', 0x2)
mkdirat(0xffffffffffffff9c, &(0x7f0000000600)='./proc\x00', 0x1ff)
mount(0x0, &(0x7f0000000640)='./proc\x00', &(0x7f0000000680)='proc\x00', 0x0, 0x0)
r3 = openat(0xffffffffffffff9c, &(0x7f0000000180)='./proc/net/rpc/auth.unix.ip/channel\x00', 0x2, 0x0)
write(r3, &(0x7f00000001c0)='nfsd 127.0.0.1 2147483647 testdomain\n', 0x25)
r4 = openat(0xffffffffffffff9c, &(0x7f0000000200)='./proc/net/rpc/nfsd.export/channel\x00', 0x2, 0x0)
write(r4, &(0x7f0000000240)='testdomain / 2147483647 8194 0 0 0\n', 0x23)

program crashed: kernel BUG in svc_destroy
testing program (duration=45.403450522s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 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:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-write-openat-write-openat-write-mkdirat-mount-openat-write-openat
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./nfsd\x00', 0x1ff)
mount(&(0x7f0000000040)=@filename='nfsd\x00', &(0x7f0000000080)='./nfsd\x00', &(0x7f00000000c0)='nfsd\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000700)='./nfsd/versions\x00', 0x2, 0x0)
write(r0, &(0x7f0000000740)='-2 -3 +4\n', 0x9)
r1 = openat(0xffffffffffffff9c, &(0x7f0000000500)='./nfsd/portlist\x00', 0x2, 0x0)
write(r1, &(0x7f0000000540)='tcp 2049\n', 0x9)
r2 = openat(0xffffffffffffff9c, &(0x7f0000000100)='./nfsd/threads\x00', 0x2, 0x0)
write(r2, &(0x7f0000000140)='1\n', 0x2)
mkdirat(0xffffffffffffff9c, &(0x7f0000000600)='./proc\x00', 0x1ff)
mount(0x0, &(0x7f0000000640)='./proc\x00', &(0x7f0000000680)='proc\x00', 0x0, 0x0)
r3 = openat(0xffffffffffffff9c, &(0x7f0000000180)='./proc/net/rpc/auth.unix.ip/channel\x00', 0x2, 0x0)
write(r3, &(0x7f00000001c0)='nfsd 127.0.0.1 2147483647 testdomain\n', 0x25)
openat(0xffffffffffffff9c, &(0x7f0000000200)='./proc/net/rpc/nfsd.export/channel\x00', 0x2, 0x0)

program crashed: kernel BUG in svc_destroy
testing program (duration=45.403450522s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 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:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-write-openat-write-openat-write-mkdirat-mount-openat-write
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./nfsd\x00', 0x1ff)
mount(&(0x7f0000000040)=@filename='nfsd\x00', &(0x7f0000000080)='./nfsd\x00', &(0x7f00000000c0)='nfsd\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000700)='./nfsd/versions\x00', 0x2, 0x0)
write(r0, &(0x7f0000000740)='-2 -3 +4\n', 0x9)
r1 = openat(0xffffffffffffff9c, &(0x7f0000000500)='./nfsd/portlist\x00', 0x2, 0x0)
write(r1, &(0x7f0000000540)='tcp 2049\n', 0x9)
r2 = openat(0xffffffffffffff9c, &(0x7f0000000100)='./nfsd/threads\x00', 0x2, 0x0)
write(r2, &(0x7f0000000140)='1\n', 0x2)
mkdirat(0xffffffffffffff9c, &(0x7f0000000600)='./proc\x00', 0x1ff)
mount(0x0, &(0x7f0000000640)='./proc\x00', &(0x7f0000000680)='proc\x00', 0x0, 0x0)
r3 = openat(0xffffffffffffff9c, &(0x7f0000000180)='./proc/net/rpc/auth.unix.ip/channel\x00', 0x2, 0x0)
write(r3, &(0x7f00000001c0)='nfsd 127.0.0.1 2147483647 testdomain\n', 0x25)

program crashed: kernel BUG in svc_destroy
testing program (duration=45.403450522s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 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:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-write-openat-write-openat-write-mkdirat-mount-openat
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./nfsd\x00', 0x1ff)
mount(&(0x7f0000000040)=@filename='nfsd\x00', &(0x7f0000000080)='./nfsd\x00', &(0x7f00000000c0)='nfsd\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000700)='./nfsd/versions\x00', 0x2, 0x0)
write(r0, &(0x7f0000000740)='-2 -3 +4\n', 0x9)
r1 = openat(0xffffffffffffff9c, &(0x7f0000000500)='./nfsd/portlist\x00', 0x2, 0x0)
write(r1, &(0x7f0000000540)='tcp 2049\n', 0x9)
r2 = openat(0xffffffffffffff9c, &(0x7f0000000100)='./nfsd/threads\x00', 0x2, 0x0)
write(r2, &(0x7f0000000140)='1\n', 0x2)
mkdirat(0xffffffffffffff9c, &(0x7f0000000600)='./proc\x00', 0x1ff)
mount(0x0, &(0x7f0000000640)='./proc\x00', &(0x7f0000000680)='proc\x00', 0x0, 0x0)
openat(0xffffffffffffff9c, &(0x7f0000000180)='./proc/net/rpc/auth.unix.ip/channel\x00', 0x2, 0x0)

program crashed: kernel BUG in svc_destroy
testing program (duration=45.403450522s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 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:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-write-openat-write-openat-write-mkdirat-mount
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./nfsd\x00', 0x1ff)
mount(&(0x7f0000000040)=@filename='nfsd\x00', &(0x7f0000000080)='./nfsd\x00', &(0x7f00000000c0)='nfsd\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000700)='./nfsd/versions\x00', 0x2, 0x0)
write(r0, &(0x7f0000000740)='-2 -3 +4\n', 0x9)
r1 = openat(0xffffffffffffff9c, &(0x7f0000000500)='./nfsd/portlist\x00', 0x2, 0x0)
write(r1, &(0x7f0000000540)='tcp 2049\n', 0x9)
r2 = openat(0xffffffffffffff9c, &(0x7f0000000100)='./nfsd/threads\x00', 0x2, 0x0)
write(r2, &(0x7f0000000140)='1\n', 0x2)
mkdirat(0xffffffffffffff9c, &(0x7f0000000600)='./proc\x00', 0x1ff)
mount(0x0, &(0x7f0000000640)='./proc\x00', &(0x7f0000000680)='proc\x00', 0x0, 0x0)

program crashed: kernel BUG in svc_destroy
testing program (duration=45.403450522s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 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:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-write-openat-write-openat-write-mkdirat
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./nfsd\x00', 0x1ff)
mount(&(0x7f0000000040)=@filename='nfsd\x00', &(0x7f0000000080)='./nfsd\x00', &(0x7f00000000c0)='nfsd\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000700)='./nfsd/versions\x00', 0x2, 0x0)
write(r0, &(0x7f0000000740)='-2 -3 +4\n', 0x9)
r1 = openat(0xffffffffffffff9c, &(0x7f0000000500)='./nfsd/portlist\x00', 0x2, 0x0)
write(r1, &(0x7f0000000540)='tcp 2049\n', 0x9)
r2 = openat(0xffffffffffffff9c, &(0x7f0000000100)='./nfsd/threads\x00', 0x2, 0x0)
write(r2, &(0x7f0000000140)='1\n', 0x2)
mkdirat(0xffffffffffffff9c, &(0x7f0000000600)='./proc\x00', 0x1ff)

program crashed: kernel BUG in svc_destroy
testing program (duration=45.403450522s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 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:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-write-openat-write-openat-write
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./nfsd\x00', 0x1ff)
mount(&(0x7f0000000040)=@filename='nfsd\x00', &(0x7f0000000080)='./nfsd\x00', &(0x7f00000000c0)='nfsd\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000700)='./nfsd/versions\x00', 0x2, 0x0)
write(r0, &(0x7f0000000740)='-2 -3 +4\n', 0x9)
r1 = openat(0xffffffffffffff9c, &(0x7f0000000500)='./nfsd/portlist\x00', 0x2, 0x0)
write(r1, &(0x7f0000000540)='tcp 2049\n', 0x9)
r2 = openat(0xffffffffffffff9c, &(0x7f0000000100)='./nfsd/threads\x00', 0x2, 0x0)
write(r2, &(0x7f0000000140)='1\n', 0x2)

program crashed: kernel BUG in svc_destroy
testing program (duration=45.403450522s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 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:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-write-openat-write-openat
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./nfsd\x00', 0x1ff)
mount(&(0x7f0000000040)=@filename='nfsd\x00', &(0x7f0000000080)='./nfsd\x00', &(0x7f00000000c0)='nfsd\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000700)='./nfsd/versions\x00', 0x2, 0x0)
write(r0, &(0x7f0000000740)='-2 -3 +4\n', 0x9)
r1 = openat(0xffffffffffffff9c, &(0x7f0000000500)='./nfsd/portlist\x00', 0x2, 0x0)
write(r1, &(0x7f0000000540)='tcp 2049\n', 0x9)
openat(0xffffffffffffff9c, &(0x7f0000000100)='./nfsd/threads\x00', 0x2, 0x0)

program crashed: kernel BUG in svc_destroy
testing program (duration=45.403450522s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 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:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-write-openat-write
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./nfsd\x00', 0x1ff)
mount(&(0x7f0000000040)=@filename='nfsd\x00', &(0x7f0000000080)='./nfsd\x00', &(0x7f00000000c0)='nfsd\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000700)='./nfsd/versions\x00', 0x2, 0x0)
write(r0, &(0x7f0000000740)='-2 -3 +4\n', 0x9)
r1 = openat(0xffffffffffffff9c, &(0x7f0000000500)='./nfsd/portlist\x00', 0x2, 0x0)
write(r1, &(0x7f0000000540)='tcp 2049\n', 0x9)

program crashed: kernel BUG in svc_destroy
testing program (duration=45.403450522s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 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:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-write-openat
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./nfsd\x00', 0x1ff)
mount(&(0x7f0000000040)=@filename='nfsd\x00', &(0x7f0000000080)='./nfsd\x00', &(0x7f00000000c0)='nfsd\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000700)='./nfsd/versions\x00', 0x2, 0x0)
write(r0, &(0x7f0000000740)='-2 -3 +4\n', 0x9)
openat(0xffffffffffffff9c, &(0x7f0000000500)='./nfsd/portlist\x00', 0x2, 0x0)

program did not crash
testing program (duration=45.403450522s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 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:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-write-write
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./nfsd\x00', 0x1ff)
mount(&(0x7f0000000040)=@filename='nfsd\x00', &(0x7f0000000080)='./nfsd\x00', &(0x7f00000000c0)='nfsd\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000700)='./nfsd/versions\x00', 0x2, 0x0)
write(r0, &(0x7f0000000740)='-2 -3 +4\n', 0x9)
write(0xffffffffffffffff, &(0x7f0000000540)='tcp 2049\n', 0x9)

program did not crash
testing program (duration=45.403450522s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 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:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-openat-write
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./nfsd\x00', 0x1ff)
mount(&(0x7f0000000040)=@filename='nfsd\x00', &(0x7f0000000080)='./nfsd\x00', &(0x7f00000000c0)='nfsd\x00', 0x0, 0x0)
openat(0xffffffffffffff9c, &(0x7f0000000700)='./nfsd/versions\x00', 0x2, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000500)='./nfsd/portlist\x00', 0x2, 0x0)
write(r0, &(0x7f0000000540)='tcp 2049\n', 0x9)

program crashed: kernel BUG in svc_destroy
testing program (duration=45.403450522s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 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:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-write
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./nfsd\x00', 0x1ff)
mount(&(0x7f0000000040)=@filename='nfsd\x00', &(0x7f0000000080)='./nfsd\x00', &(0x7f00000000c0)='nfsd\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000500)='./nfsd/portlist\x00', 0x2, 0x0)
write(r0, &(0x7f0000000540)='tcp 2049\n', 0x9)

program crashed: kernel BUG in svc_destroy
testing program (duration=45.403450522s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 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:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-openat-write
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./nfsd\x00', 0x1ff)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000500)='./nfsd/portlist\x00', 0x2, 0x0)
write(r0, &(0x7f0000000540)='tcp 2049\n', 0x9)

program did not crash
testing program (duration=45.403450522s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 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:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mount-openat-write
detailed listing:
executing program 0:
mount(&(0x7f0000000040)=@filename='nfsd\x00', &(0x7f0000000080)='./nfsd\x00', &(0x7f00000000c0)='nfsd\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000500)='./nfsd/portlist\x00', 0x2, 0x0)
write(r0, &(0x7f0000000540)='tcp 2049\n', 0x9)

program did not crash
testing program (duration=45.403450522s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 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:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-write
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, 0x0, 0x1ff)
mount(&(0x7f0000000040)=@filename='nfsd\x00', &(0x7f0000000080)='./nfsd\x00', &(0x7f00000000c0)='nfsd\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000500)='./nfsd/portlist\x00', 0x2, 0x0)
write(r0, &(0x7f0000000540)='tcp 2049\n', 0x9)

program did not crash
testing program (duration=45.403450522s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 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:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-write
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./nfsd\x00', 0x1ff)
mount(0x0, &(0x7f0000000080)='./nfsd\x00', &(0x7f00000000c0)='nfsd\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000500)='./nfsd/portlist\x00', 0x2, 0x0)
write(r0, &(0x7f0000000540)='tcp 2049\n', 0x9)

program crashed: kernel BUG in svc_destroy
testing program (duration=45.403450522s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 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:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-write
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./nfsd\x00', 0x1ff)
mount(0x0, 0x0, &(0x7f00000000c0)='nfsd\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000500)='./nfsd/portlist\x00', 0x2, 0x0)
write(r0, &(0x7f0000000540)='tcp 2049\n', 0x9)

program did not crash
testing program (duration=45.403450522s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 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:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-write
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./nfsd\x00', 0x1ff)
mount(0x0, &(0x7f0000000080)='./nfsd\x00', 0x0, 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000500)='./nfsd/portlist\x00', 0x2, 0x0)
write(r0, &(0x7f0000000540)='tcp 2049\n', 0x9)

program did not crash
testing program (duration=45.403450522s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 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:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-write
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./nfsd\x00', 0x1ff)
mount(0x0, &(0x7f0000000080)='./nfsd\x00', &(0x7f00000000c0)='nfsd\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, 0x0, 0x2, 0x0)
write(r0, &(0x7f0000000540)='tcp 2049\n', 0x9)

program did not crash
testing program (duration=45.403450522s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 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:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-write
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./nfsd\x00', 0x1ff)
mount(0x0, &(0x7f0000000080)='./nfsd\x00', &(0x7f00000000c0)='nfsd\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000500)='./nfsd/portlist\x00', 0x2, 0x0)
write(r0, 0x0, 0x0)

program did not crash
testing program (duration=45.403450522s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 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:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-write
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./nfsd\x00', 0x1ff)
mount(0x0, &(0x7f0000000080)='./nfsd\x00', &(0x7f00000000c0)='nfsd\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000500)='./nfsd/portlist\x00', 0x2, 0x0)
write(r0, &(0x7f0000000540), 0x0)

program did not crash
extracting C reproducer
testing compiled C program (duration=45.403450522s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 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:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-write
program crashed: kernel BUG in svc_destroy
simplifying C reproducer
testing compiled C program (duration=45.403450522s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 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:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-write
program crashed: kernel BUG in svc_destroy
testing compiled C program (duration=45.403450522s, {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:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-write
program did not crash
testing compiled C program (duration=45.403450522s, {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:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-write
program crashed: kernel BUG in svc_destroy
testing compiled C program (duration=45.403450522s, {Threaded:false Repeat:true 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:true Sysctl:true Swap:false UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-write
program crashed: kernel BUG in svc_destroy
testing compiled C program (duration=45.403450522s, {Threaded:false Repeat:true 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}}): mkdirat-mount-openat-write
program crashed: kernel BUG in svc_destroy
testing compiled C program (duration=45.403450522s, {Threaded:false Repeat:true 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}}): mkdirat-mount-openat-write
program did not crash
testing compiled C program (duration=45.403450522s, {Threaded:false Repeat:true 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:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-write
program crashed: kernel BUG in svc_destroy
testing compiled C program (duration=45.403450522s, {Threaded:false Repeat:true 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:true HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-write
program crashed: kernel BUG in svc_destroy
testing program (duration=45.403450522s, {Threaded:false Repeat:true 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:true HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-write
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./nfsd\x00', 0x1ff)
mount(0x0, &(0x7f0000000080)='./nfsd\x00', &(0x7f00000000c0)='nfsd\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000500)='./nfsd/portlist\x00', 0x2, 0x0)
write(r0, &(0x7f0000000540)='tcp 2049\n', 0x9)

program crashed: kernel BUG in svc_destroy
validation run: crashed=true
testing program (duration=45.403450522s, {Threaded:false Repeat:true 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:true HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-write
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./nfsd\x00', 0x1ff)
mount(0x0, &(0x7f0000000080)='./nfsd\x00', &(0x7f00000000c0)='nfsd\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000500)='./nfsd/portlist\x00', 0x2, 0x0)
write(r0, &(0x7f0000000540)='tcp 2049\n', 0x9)

program crashed: kernel BUG in svc_destroy
validation run: crashed=true
testing program (duration=45.403450522s, {Threaded:false Repeat:true 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:true HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-write
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./nfsd\x00', 0x1ff)
mount(0x0, &(0x7f0000000080)='./nfsd\x00', &(0x7f00000000c0)='nfsd\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000500)='./nfsd/portlist\x00', 0x2, 0x0)
write(r0, &(0x7f0000000540)='tcp 2049\n', 0x9)

program crashed: kernel BUG in svc_destroy
validation run: crashed=true
reproducing took 58m38.105999759s
repro crashed as (corrupted=false):
------------[ cut here ]------------
kernel BUG at net/sunrpc/svc.c:572!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 4495 Comm: syz.0.18 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
RIP: 0010:svc_destroy+0x184/0x190 net/sunrpc/svc.c:572
Code: 5f 5d e9 ef ae c3 f8 44 89 f9 80 e1 07 80 c1 03 38 c1 0f 8c 24 ff ff ff 4c 89 ff e8 56 43 c4 f8 e9 17 ff ff ff e8 9c 20 7f f8 <0f> 0b e8 95 20 7f f8 0f 0b 0f 1f 00 55 41 57 41 56 41 55 41 54 53
RSP: 0018:ffffc900032bfad0 EFLAGS: 00010293
RAX: ffffffff88f9dc14 RBX: ffff88807c869050 RCX: ffff888018de8000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc900032bfc78 R08: ffffffff901ee1ff R09: 1ffffffff203dc3f
R10: dffffc0000000000 R11: fffffbfff203dc40 R12: dffffc0000000000
R13: dffffc0000000000 R14: ffff88807c869068 R15: 0000000000000001
FS:  0000555558af0500(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f899d73a6b0 CR3: 000000001eeb3000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 kref_put include/linux/kref.h:65 [inline]
 svc_put include/linux/sunrpc/svc.h:123 [inline]
 __write_ports_addxprt fs/nfsd/nfsctl.c:770 [inline]
 __write_ports fs/nfsd/nfsctl.c:796 [inline]
 write_ports+0xa26/0xb80 fs/nfsd/nfsctl.c:849
 nfsctl_transaction_write+0x105/0x150 fs/nfsd/nfsctl.c:114
 vfs_write+0x304/0xd70 fs/read_write.c:592
 ksys_write+0x153/0x260 fs/read_write.c:647
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7ff5a9eae0d9
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffcd5b8b8b8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007ff5aa135fa0 RCX: 00007ff5a9eae0d9
RDX: 0000000000000009 RSI: 0000200000000540 RDI: 0000000000000003
RBP: 00007ff5a9f45024 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ff5aa135fac R14: 00007ff5aa135fa0 R15: 00007ff5aa135fa0
 </TASK>
Modules linked in:
---[ end trace 77eb8d2ecaef7e42 ]---
RIP: 0010:svc_destroy+0x184/0x190 net/sunrpc/svc.c:572
Code: 5f 5d e9 ef ae c3 f8 44 89 f9 80 e1 07 80 c1 03 38 c1 0f 8c 24 ff ff ff 4c 89 ff e8 56 43 c4 f8 e9 17 ff ff ff e8 9c 20 7f f8 <0f> 0b e8 95 20 7f f8 0f 0b 0f 1f 00 55 41 57 41 56 41 55 41 54 53
RSP: 0018:ffffc900032bfad0 EFLAGS: 00010293
RAX: ffffffff88f9dc14 RBX: ffff88807c869050 RCX: ffff888018de8000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc900032bfc78 R08: ffffffff901ee1ff R09: 1ffffffff203dc3f
R10: dffffc0000000000 R11: fffffbfff203dc40 R12: dffffc0000000000
R13: dffffc0000000000 R14: ffff88807c869068 R15: 0000000000000001
FS:  0000555558af0500(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffcd4ae8748 CR3: 000000001eeb3000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400

final repro crashed as (corrupted=false):
------------[ cut here ]------------
kernel BUG at net/sunrpc/svc.c:572!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 4495 Comm: syz.0.18 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
RIP: 0010:svc_destroy+0x184/0x190 net/sunrpc/svc.c:572
Code: 5f 5d e9 ef ae c3 f8 44 89 f9 80 e1 07 80 c1 03 38 c1 0f 8c 24 ff ff ff 4c 89 ff e8 56 43 c4 f8 e9 17 ff ff ff e8 9c 20 7f f8 <0f> 0b e8 95 20 7f f8 0f 0b 0f 1f 00 55 41 57 41 56 41 55 41 54 53
RSP: 0018:ffffc900032bfad0 EFLAGS: 00010293
RAX: ffffffff88f9dc14 RBX: ffff88807c869050 RCX: ffff888018de8000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc900032bfc78 R08: ffffffff901ee1ff R09: 1ffffffff203dc3f
R10: dffffc0000000000 R11: fffffbfff203dc40 R12: dffffc0000000000
R13: dffffc0000000000 R14: ffff88807c869068 R15: 0000000000000001
FS:  0000555558af0500(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f899d73a6b0 CR3: 000000001eeb3000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 kref_put include/linux/kref.h:65 [inline]
 svc_put include/linux/sunrpc/svc.h:123 [inline]
 __write_ports_addxprt fs/nfsd/nfsctl.c:770 [inline]
 __write_ports fs/nfsd/nfsctl.c:796 [inline]
 write_ports+0xa26/0xb80 fs/nfsd/nfsctl.c:849
 nfsctl_transaction_write+0x105/0x150 fs/nfsd/nfsctl.c:114
 vfs_write+0x304/0xd70 fs/read_write.c:592
 ksys_write+0x153/0x260 fs/read_write.c:647
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7ff5a9eae0d9
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffcd5b8b8b8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007ff5aa135fa0 RCX: 00007ff5a9eae0d9
RDX: 0000000000000009 RSI: 0000200000000540 RDI: 0000000000000003
RBP: 00007ff5a9f45024 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ff5aa135fac R14: 00007ff5aa135fa0 R15: 00007ff5aa135fa0
 </TASK>
Modules linked in:
---[ end trace 77eb8d2ecaef7e42 ]---
RIP: 0010:svc_destroy+0x184/0x190 net/sunrpc/svc.c:572
Code: 5f 5d e9 ef ae c3 f8 44 89 f9 80 e1 07 80 c1 03 38 c1 0f 8c 24 ff ff ff 4c 89 ff e8 56 43 c4 f8 e9 17 ff ff ff e8 9c 20 7f f8 <0f> 0b e8 95 20 7f f8 0f 0b 0f 1f 00 55 41 57 41 56 41 55 41 54 53
RSP: 0018:ffffc900032bfad0 EFLAGS: 00010293
RAX: ffffffff88f9dc14 RBX: ffff88807c869050 RCX: ffff888018de8000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc900032bfc78 R08: ffffffff901ee1ff R09: 1ffffffff203dc3f
R10: dffffc0000000000 R11: fffffbfff203dc40 R12: dffffc0000000000
R13: dffffc0000000000 R14: ffff88807c869068 R15: 0000000000000001
FS:  0000555558af0500(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffcd4ae8748 CR3: 000000001eeb3000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400