Extracting prog: 1m7.214365557s Minimizing prog: 14m39.293510642s Simplifying prog options: 0s Extracting C: 22.573693958s Simplifying C: 3m54.848039723s 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: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-socket$inet_udp-mount-openat-write-openat-write-openat-write-connect$inet detailed listing: executing program 0: mkdirat(0xffffffffffffff9c, &(0x7f0000000040)='./nfsd\x00', 0x1ff) socket$inet_udp(0x2, 0x2, 0x0) mount(0x0, &(0x7f00000000c0)='./nfsd\x00', &(0x7f0000000100)='nfsd\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000200)='./nfsd/portlist\x00', 0x1, 0x0) write(r0, &(0x7f0000000240)='3', 0x1) r1 = openat(0xffffffffffffff9c, &(0x7f0000000180)='./nfsd/versions\x00', 0x1, 0x0) write(r1, &(0x7f00000001c0)='-2 -3\n', 0x6) r2 = openat(0xffffffffffffff9c, &(0x7f0000000200)='./nfsd/portlist\x00', 0x1, 0x0) write(r2, &(0x7f0000000240)='3', 0x1) connect$inet(0xffffffffffffffff, &(0x7f0000000000)={0x2, 0x4e20, @dev={0xac, 0x14, 0x14, 0x18}}, 0x10) program crashed: BUG: stack guard page was hit in nfsctl_transaction_write single: successfully extracted reproducer found reproducer with 10 syscalls minimizing guilty program testing program (duration=33.415979485s, {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: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-socket$inet_udp-mount-openat-write-openat-write-openat-write detailed listing: executing program 0: mkdirat(0xffffffffffffff9c, &(0x7f0000000040)='./nfsd\x00', 0x1ff) socket$inet_udp(0x2, 0x2, 0x0) mount(0x0, &(0x7f00000000c0)='./nfsd\x00', &(0x7f0000000100)='nfsd\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000200)='./nfsd/portlist\x00', 0x1, 0x0) write(r0, &(0x7f0000000240)='3', 0x1) r1 = openat(0xffffffffffffff9c, &(0x7f0000000180)='./nfsd/versions\x00', 0x1, 0x0) write(r1, &(0x7f00000001c0)='-2 -3\n', 0x6) r2 = openat(0xffffffffffffff9c, &(0x7f0000000200)='./nfsd/portlist\x00', 0x1, 0x0) write(r2, &(0x7f0000000240)='3', 0x1) program crashed: BUG: stack guard page was hit in nfsctl_transaction_write testing program (duration=33.415979485s, {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: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-socket$inet_udp-mount-openat-write-openat-write-openat detailed listing: executing program 0: mkdirat(0xffffffffffffff9c, &(0x7f0000000040)='./nfsd\x00', 0x1ff) socket$inet_udp(0x2, 0x2, 0x0) mount(0x0, &(0x7f00000000c0)='./nfsd\x00', &(0x7f0000000100)='nfsd\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000200)='./nfsd/portlist\x00', 0x1, 0x0) write(r0, &(0x7f0000000240)='3', 0x1) r1 = openat(0xffffffffffffff9c, &(0x7f0000000180)='./nfsd/versions\x00', 0x1, 0x0) write(r1, &(0x7f00000001c0)='-2 -3\n', 0x6) openat(0xffffffffffffff9c, &(0x7f0000000200)='./nfsd/portlist\x00', 0x1, 0x0) program did not crash testing program (duration=33.415979485s, {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: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-socket$inet_udp-mount-openat-write-openat-write-write detailed listing: executing program 0: mkdirat(0xffffffffffffff9c, &(0x7f0000000040)='./nfsd\x00', 0x1ff) socket$inet_udp(0x2, 0x2, 0x0) mount(0x0, &(0x7f00000000c0)='./nfsd\x00', &(0x7f0000000100)='nfsd\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000200)='./nfsd/portlist\x00', 0x1, 0x0) write(r0, &(0x7f0000000240)='3', 0x1) r1 = openat(0xffffffffffffff9c, &(0x7f0000000180)='./nfsd/versions\x00', 0x1, 0x0) write(r1, &(0x7f00000001c0)='-2 -3\n', 0x6) write(0xffffffffffffffff, &(0x7f0000000240)='3', 0x1) program did not crash testing program (duration=33.415979485s, {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: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-socket$inet_udp-mount-openat-write-openat-openat-write detailed listing: executing program 0: mkdirat(0xffffffffffffff9c, &(0x7f0000000040)='./nfsd\x00', 0x1ff) socket$inet_udp(0x2, 0x2, 0x0) mount(0x0, &(0x7f00000000c0)='./nfsd\x00', &(0x7f0000000100)='nfsd\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000200)='./nfsd/portlist\x00', 0x1, 0x0) write(r0, &(0x7f0000000240)='3', 0x1) openat(0xffffffffffffff9c, &(0x7f0000000180)='./nfsd/versions\x00', 0x1, 0x0) r1 = openat(0xffffffffffffff9c, &(0x7f0000000200)='./nfsd/portlist\x00', 0x1, 0x0) write(r1, &(0x7f0000000240)='3', 0x1) program did not crash testing program (duration=33.415979485s, {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: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-socket$inet_udp-mount-openat-write-write-openat-write detailed listing: executing program 0: mkdirat(0xffffffffffffff9c, &(0x7f0000000040)='./nfsd\x00', 0x1ff) socket$inet_udp(0x2, 0x2, 0x0) mount(0x0, &(0x7f00000000c0)='./nfsd\x00', &(0x7f0000000100)='nfsd\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000200)='./nfsd/portlist\x00', 0x1, 0x0) write(r0, &(0x7f0000000240)='3', 0x1) write(0xffffffffffffffff, &(0x7f00000001c0)='-2 -3\n', 0x6) r1 = openat(0xffffffffffffff9c, &(0x7f0000000200)='./nfsd/portlist\x00', 0x1, 0x0) write(r1, &(0x7f0000000240)='3', 0x1) program did not crash testing program (duration=33.415979485s, {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: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-socket$inet_udp-mount-openat-openat-write-openat-write detailed listing: executing program 0: mkdirat(0xffffffffffffff9c, &(0x7f0000000040)='./nfsd\x00', 0x1ff) socket$inet_udp(0x2, 0x2, 0x0) mount(0x0, &(0x7f00000000c0)='./nfsd\x00', &(0x7f0000000100)='nfsd\x00', 0x0, 0x0) openat(0xffffffffffffff9c, &(0x7f0000000200)='./nfsd/portlist\x00', 0x1, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000180)='./nfsd/versions\x00', 0x1, 0x0) write(r0, &(0x7f00000001c0)='-2 -3\n', 0x6) r1 = openat(0xffffffffffffff9c, &(0x7f0000000200)='./nfsd/portlist\x00', 0x1, 0x0) write(r1, &(0x7f0000000240)='3', 0x1) program did not crash testing program (duration=33.415979485s, {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: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-socket$inet_udp-mount-write-openat-write-openat-write detailed listing: executing program 0: mkdirat(0xffffffffffffff9c, &(0x7f0000000040)='./nfsd\x00', 0x1ff) socket$inet_udp(0x2, 0x2, 0x0) mount(0x0, &(0x7f00000000c0)='./nfsd\x00', &(0x7f0000000100)='nfsd\x00', 0x0, 0x0) write(0xffffffffffffffff, &(0x7f0000000240)='3', 0x1) r0 = openat(0xffffffffffffff9c, &(0x7f0000000180)='./nfsd/versions\x00', 0x1, 0x0) write(r0, &(0x7f00000001c0)='-2 -3\n', 0x6) r1 = openat(0xffffffffffffff9c, &(0x7f0000000200)='./nfsd/portlist\x00', 0x1, 0x0) write(r1, &(0x7f0000000240)='3', 0x1) program did not crash testing program (duration=33.415979485s, {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: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-socket$inet_udp-openat-write-openat-write-openat-write detailed listing: executing program 0: mkdirat(0xffffffffffffff9c, &(0x7f0000000040)='./nfsd\x00', 0x1ff) socket$inet_udp(0x2, 0x2, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000200)='./nfsd/portlist\x00', 0x1, 0x0) write(r0, &(0x7f0000000240)='3', 0x1) r1 = openat(0xffffffffffffff9c, &(0x7f0000000180)='./nfsd/versions\x00', 0x1, 0x0) write(r1, &(0x7f00000001c0)='-2 -3\n', 0x6) r2 = openat(0xffffffffffffff9c, &(0x7f0000000200)='./nfsd/portlist\x00', 0x1, 0x0) write(r2, &(0x7f0000000240)='3', 0x1) program did not crash testing program (duration=33.415979485s, {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: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, &(0x7f0000000040)='./nfsd\x00', 0x1ff) mount(0x0, &(0x7f00000000c0)='./nfsd\x00', &(0x7f0000000100)='nfsd\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000200)='./nfsd/portlist\x00', 0x1, 0x0) write(r0, &(0x7f0000000240)='3', 0x1) r1 = openat(0xffffffffffffff9c, &(0x7f0000000180)='./nfsd/versions\x00', 0x1, 0x0) write(r1, &(0x7f00000001c0)='-2 -3\n', 0x6) r2 = openat(0xffffffffffffff9c, &(0x7f0000000200)='./nfsd/portlist\x00', 0x1, 0x0) write(r2, &(0x7f0000000240)='3', 0x1) program did not crash testing program (duration=33.415979485s, {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: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}}): socket$inet_udp-mount-openat-write-openat-write-openat-write detailed listing: executing program 0: socket$inet_udp(0x2, 0x2, 0x0) mount(0x0, &(0x7f00000000c0)='./nfsd\x00', &(0x7f0000000100)='nfsd\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000200)='./nfsd/portlist\x00', 0x1, 0x0) write(r0, &(0x7f0000000240)='3', 0x1) r1 = openat(0xffffffffffffff9c, &(0x7f0000000180)='./nfsd/versions\x00', 0x1, 0x0) write(r1, &(0x7f00000001c0)='-2 -3\n', 0x6) r2 = openat(0xffffffffffffff9c, &(0x7f0000000200)='./nfsd/portlist\x00', 0x1, 0x0) write(r2, &(0x7f0000000240)='3', 0x1) program did not crash testing program (duration=33.415979485s, {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: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-socket$inet_udp-mount-openat-write-openat-write-openat-write detailed listing: executing program 0: mkdirat(0xffffffffffffff9c, 0x0, 0x1ff) socket$inet_udp(0x2, 0x2, 0x0) mount(0x0, &(0x7f00000000c0)='./nfsd\x00', &(0x7f0000000100)='nfsd\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000200)='./nfsd/portlist\x00', 0x1, 0x0) write(r0, &(0x7f0000000240)='3', 0x1) r1 = openat(0xffffffffffffff9c, &(0x7f0000000180)='./nfsd/versions\x00', 0x1, 0x0) write(r1, &(0x7f00000001c0)='-2 -3\n', 0x6) r2 = openat(0xffffffffffffff9c, &(0x7f0000000200)='./nfsd/portlist\x00', 0x1, 0x0) write(r2, &(0x7f0000000240)='3', 0x1) program did not crash testing program (duration=33.415979485s, {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: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-socket$inet_udp-mount-openat-write-openat-write-openat-write detailed listing: executing program 0: mkdirat(0xffffffffffffff9c, &(0x7f0000000040)='./nfsd\x00', 0x1ff) socket$inet_udp(0x2, 0x2, 0x0) mount(0x0, 0x0, &(0x7f0000000100)='nfsd\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000200)='./nfsd/portlist\x00', 0x1, 0x0) write(r0, &(0x7f0000000240)='3', 0x1) r1 = openat(0xffffffffffffff9c, &(0x7f0000000180)='./nfsd/versions\x00', 0x1, 0x0) write(r1, &(0x7f00000001c0)='-2 -3\n', 0x6) r2 = openat(0xffffffffffffff9c, &(0x7f0000000200)='./nfsd/portlist\x00', 0x1, 0x0) write(r2, &(0x7f0000000240)='3', 0x1) program did not crash testing program (duration=33.415979485s, {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: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-socket$inet_udp-mount-openat-write-openat-write-openat-write detailed listing: executing program 0: mkdirat(0xffffffffffffff9c, &(0x7f0000000040)='./nfsd\x00', 0x1ff) socket$inet_udp(0x2, 0x2, 0x0) mount(0x0, &(0x7f00000000c0)='./nfsd\x00', 0x0, 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000200)='./nfsd/portlist\x00', 0x1, 0x0) write(r0, &(0x7f0000000240)='3', 0x1) r1 = openat(0xffffffffffffff9c, &(0x7f0000000180)='./nfsd/versions\x00', 0x1, 0x0) write(r1, &(0x7f00000001c0)='-2 -3\n', 0x6) r2 = openat(0xffffffffffffff9c, &(0x7f0000000200)='./nfsd/portlist\x00', 0x1, 0x0) write(r2, &(0x7f0000000240)='3', 0x1) program did not crash testing program (duration=33.415979485s, {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: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-socket$inet_udp-mount-openat-write-openat-write-openat-write detailed listing: executing program 0: mkdirat(0xffffffffffffff9c, &(0x7f0000000040)='./nfsd\x00', 0x1ff) socket$inet_udp(0x2, 0x2, 0x0) mount(0x0, &(0x7f00000000c0)='./nfsd\x00', &(0x7f0000000100)='nfsd\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, 0x0, 0x1, 0x0) write(r0, &(0x7f0000000240)='3', 0x1) r1 = openat(0xffffffffffffff9c, &(0x7f0000000180)='./nfsd/versions\x00', 0x1, 0x0) write(r1, &(0x7f00000001c0)='-2 -3\n', 0x6) r2 = openat(0xffffffffffffff9c, &(0x7f0000000200)='./nfsd/portlist\x00', 0x1, 0x0) write(r2, &(0x7f0000000240)='3', 0x1) program did not crash testing program (duration=33.415979485s, {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: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-socket$inet_udp-mount-openat-write-openat-write-openat-write detailed listing: executing program 0: mkdirat(0xffffffffffffff9c, &(0x7f0000000040)='./nfsd\x00', 0x1ff) socket$inet_udp(0x2, 0x2, 0x0) mount(0x0, &(0x7f00000000c0)='./nfsd\x00', &(0x7f0000000100)='nfsd\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000200)='./nfsd/portlist\x00', 0x1, 0x0) write(r0, 0x0, 0x0) r1 = openat(0xffffffffffffff9c, &(0x7f0000000180)='./nfsd/versions\x00', 0x1, 0x0) write(r1, &(0x7f00000001c0)='-2 -3\n', 0x6) r2 = openat(0xffffffffffffff9c, &(0x7f0000000200)='./nfsd/portlist\x00', 0x1, 0x0) write(r2, &(0x7f0000000240)='3', 0x1) program did not crash testing program (duration=33.415979485s, {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: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-socket$inet_udp-mount-openat-write-openat-write-openat-write detailed listing: executing program 0: mkdirat(0xffffffffffffff9c, &(0x7f0000000040)='./nfsd\x00', 0x1ff) socket$inet_udp(0x2, 0x2, 0x0) mount(0x0, &(0x7f00000000c0)='./nfsd\x00', &(0x7f0000000100)='nfsd\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000200)='./nfsd/portlist\x00', 0x1, 0x0) write(r0, &(0x7f0000000240), 0x0) r1 = openat(0xffffffffffffff9c, &(0x7f0000000180)='./nfsd/versions\x00', 0x1, 0x0) write(r1, &(0x7f00000001c0)='-2 -3\n', 0x6) r2 = openat(0xffffffffffffff9c, &(0x7f0000000200)='./nfsd/portlist\x00', 0x1, 0x0) write(r2, &(0x7f0000000240)='3', 0x1) program did not crash testing program (duration=33.415979485s, {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: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-socket$inet_udp-mount-openat-write-openat-write-openat-write detailed listing: executing program 0: mkdirat(0xffffffffffffff9c, &(0x7f0000000040)='./nfsd\x00', 0x1ff) socket$inet_udp(0x2, 0x2, 0x0) mount(0x0, &(0x7f00000000c0)='./nfsd\x00', &(0x7f0000000100)='nfsd\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000200)='./nfsd/portlist\x00', 0x1, 0x0) write(r0, &(0x7f0000000240)='3', 0x1) r1 = openat(0xffffffffffffff9c, 0x0, 0x1, 0x0) write(r1, &(0x7f00000001c0)='-2 -3\n', 0x6) r2 = openat(0xffffffffffffff9c, &(0x7f0000000200)='./nfsd/portlist\x00', 0x1, 0x0) write(r2, &(0x7f0000000240)='3', 0x1) program did not crash testing program (duration=33.415979485s, {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: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-socket$inet_udp-mount-openat-write-openat-write-openat-write detailed listing: executing program 0: mkdirat(0xffffffffffffff9c, &(0x7f0000000040)='./nfsd\x00', 0x1ff) socket$inet_udp(0x2, 0x2, 0x0) mount(0x0, &(0x7f00000000c0)='./nfsd\x00', &(0x7f0000000100)='nfsd\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000200)='./nfsd/portlist\x00', 0x1, 0x0) write(r0, &(0x7f0000000240)='3', 0x1) r1 = openat(0xffffffffffffff9c, &(0x7f0000000180)='./nfsd/versions\x00', 0x1, 0x0) write(r1, 0x0, 0x0) r2 = openat(0xffffffffffffff9c, &(0x7f0000000200)='./nfsd/portlist\x00', 0x1, 0x0) write(r2, &(0x7f0000000240)='3', 0x1) program did not crash testing program (duration=33.415979485s, {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: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-socket$inet_udp-mount-openat-write-openat-write-openat-write detailed listing: executing program 0: mkdirat(0xffffffffffffff9c, &(0x7f0000000040)='./nfsd\x00', 0x1ff) socket$inet_udp(0x2, 0x2, 0x0) mount(0x0, &(0x7f00000000c0)='./nfsd\x00', &(0x7f0000000100)='nfsd\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000200)='./nfsd/portlist\x00', 0x1, 0x0) write(r0, &(0x7f0000000240)='3', 0x1) r1 = openat(0xffffffffffffff9c, &(0x7f0000000180)='./nfsd/versions\x00', 0x1, 0x0) write(r1, &(0x7f00000001c0), 0x0) r2 = openat(0xffffffffffffff9c, &(0x7f0000000200)='./nfsd/portlist\x00', 0x1, 0x0) write(r2, &(0x7f0000000240)='3', 0x1) program did not crash testing program (duration=33.415979485s, {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: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-socket$inet_udp-mount-openat-write-openat-write-openat-write detailed listing: executing program 0: mkdirat(0xffffffffffffff9c, &(0x7f0000000040)='./nfsd\x00', 0x1ff) socket$inet_udp(0x2, 0x2, 0x0) mount(0x0, &(0x7f00000000c0)='./nfsd\x00', &(0x7f0000000100)='nfsd\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000200)='./nfsd/portlist\x00', 0x1, 0x0) write(r0, &(0x7f0000000240)='3', 0x1) r1 = openat(0xffffffffffffff9c, &(0x7f0000000180)='./nfsd/versions\x00', 0x1, 0x0) write(r1, &(0x7f00000001c0)='-2 -3\n', 0x6) r2 = openat(0xffffffffffffff9c, 0x0, 0x1, 0x0) write(r2, &(0x7f0000000240)='3', 0x1) program did not crash testing program (duration=33.415979485s, {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: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-socket$inet_udp-mount-openat-write-openat-write-openat-write detailed listing: executing program 0: mkdirat(0xffffffffffffff9c, &(0x7f0000000040)='./nfsd\x00', 0x1ff) socket$inet_udp(0x2, 0x2, 0x0) mount(0x0, &(0x7f00000000c0)='./nfsd\x00', &(0x7f0000000100)='nfsd\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000200)='./nfsd/portlist\x00', 0x1, 0x0) write(r0, &(0x7f0000000240)='3', 0x1) r1 = openat(0xffffffffffffff9c, &(0x7f0000000180)='./nfsd/versions\x00', 0x1, 0x0) write(r1, &(0x7f00000001c0)='-2 -3\n', 0x6) r2 = openat(0xffffffffffffff9c, &(0x7f0000000200)='./nfsd/portlist\x00', 0x1, 0x0) write(r2, 0x0, 0x0) program did not crash testing program (duration=33.415979485s, {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: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-socket$inet_udp-mount-openat-write-openat-write-openat-write detailed listing: executing program 0: mkdirat(0xffffffffffffff9c, &(0x7f0000000040)='./nfsd\x00', 0x1ff) socket$inet_udp(0x2, 0x2, 0x0) mount(0x0, &(0x7f00000000c0)='./nfsd\x00', &(0x7f0000000100)='nfsd\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000200)='./nfsd/portlist\x00', 0x1, 0x0) write(r0, &(0x7f0000000240)='3', 0x1) r1 = openat(0xffffffffffffff9c, &(0x7f0000000180)='./nfsd/versions\x00', 0x1, 0x0) write(r1, &(0x7f00000001c0)='-2 -3\n', 0x6) r2 = openat(0xffffffffffffff9c, &(0x7f0000000200)='./nfsd/portlist\x00', 0x1, 0x0) write(r2, &(0x7f0000000240), 0x0) program did not crash extracting C reproducer testing compiled C program (duration=33.415979485s, {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: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-socket$inet_udp-mount-openat-write-openat-write-openat-write program crashed: BUG: stack guard page was hit in nfsctl_transaction_write simplifying C reproducer testing compiled C program (duration=33.415979485s, {Threaded:false Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-socket$inet_udp-mount-openat-write-openat-write-openat-write program crashed: BUG: stack guard page was hit in nfsctl_transaction_write testing compiled C program (duration=33.415979485s, {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-socket$inet_udp-mount-openat-write-openat-write-openat-write program did not crash testing compiled C program (duration=33.415979485s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-socket$inet_udp-mount-openat-write-openat-write-openat-write program crashed: BUG: stack guard page was hit in nfsctl_transaction_write testing compiled C program (duration=33.415979485s, {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-socket$inet_udp-mount-openat-write-openat-write-openat-write program crashed: BUG: stack guard page was hit in nfsctl_transaction_write testing compiled C program (duration=33.415979485s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-socket$inet_udp-mount-openat-write-openat-write-openat-write program crashed: BUG: stack guard page was hit in nfsctl_transaction_write testing compiled C program (duration=33.415979485s, {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-socket$inet_udp-mount-openat-write-openat-write-openat-write program crashed: BUG: stack guard page was hit in nfsctl_transaction_write testing compiled C program (duration=33.415979485s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-socket$inet_udp-mount-openat-write-openat-write-openat-write program crashed: BUG: stack guard page was hit in nfsctl_transaction_write testing compiled C program (duration=33.415979485s, {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:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-socket$inet_udp-mount-openat-write-openat-write-openat-write program crashed: BUG: stack guard page was hit in nfsctl_transaction_write testing program (duration=33.415979485s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-socket$inet_udp-mount-openat-write-openat-write-openat-write detailed listing: executing program 0: mkdirat(0xffffffffffffff9c, &(0x7f0000000040)='./nfsd\x00', 0x1ff) socket$inet_udp(0x2, 0x2, 0x0) mount(0x0, &(0x7f00000000c0)='./nfsd\x00', &(0x7f0000000100)='nfsd\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000200)='./nfsd/portlist\x00', 0x1, 0x0) write(r0, &(0x7f0000000240)='3', 0x1) r1 = openat(0xffffffffffffff9c, &(0x7f0000000180)='./nfsd/versions\x00', 0x1, 0x0) write(r1, &(0x7f00000001c0)='-2 -3\n', 0x6) r2 = openat(0xffffffffffffff9c, &(0x7f0000000200)='./nfsd/portlist\x00', 0x1, 0x0) write(r2, &(0x7f0000000240)='3', 0x1) program crashed: BUG: stack guard page was hit in nfsctl_transaction_write validation run: crashed=true testing program (duration=33.415979485s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-socket$inet_udp-mount-openat-write-openat-write-openat-write detailed listing: executing program 0: mkdirat(0xffffffffffffff9c, &(0x7f0000000040)='./nfsd\x00', 0x1ff) socket$inet_udp(0x2, 0x2, 0x0) mount(0x0, &(0x7f00000000c0)='./nfsd\x00', &(0x7f0000000100)='nfsd\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000200)='./nfsd/portlist\x00', 0x1, 0x0) write(r0, &(0x7f0000000240)='3', 0x1) r1 = openat(0xffffffffffffff9c, &(0x7f0000000180)='./nfsd/versions\x00', 0x1, 0x0) write(r1, &(0x7f00000001c0)='-2 -3\n', 0x6) r2 = openat(0xffffffffffffff9c, &(0x7f0000000200)='./nfsd/portlist\x00', 0x1, 0x0) write(r2, &(0x7f0000000240)='3', 0x1) program crashed: BUG: stack guard page was hit in nfsctl_transaction_write validation run: crashed=true testing program (duration=33.415979485s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-socket$inet_udp-mount-openat-write-openat-write-openat-write detailed listing: executing program 0: mkdirat(0xffffffffffffff9c, &(0x7f0000000040)='./nfsd\x00', 0x1ff) socket$inet_udp(0x2, 0x2, 0x0) mount(0x0, &(0x7f00000000c0)='./nfsd\x00', &(0x7f0000000100)='nfsd\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000200)='./nfsd/portlist\x00', 0x1, 0x0) write(r0, &(0x7f0000000240)='3', 0x1) r1 = openat(0xffffffffffffff9c, &(0x7f0000000180)='./nfsd/versions\x00', 0x1, 0x0) write(r1, &(0x7f00000001c0)='-2 -3\n', 0x6) r2 = openat(0xffffffffffffff9c, &(0x7f0000000200)='./nfsd/portlist\x00', 0x1, 0x0) write(r2, &(0x7f0000000240)='3', 0x1) program crashed: BUG: stack guard page was hit in nfsctl_transaction_write validation run: crashed=true reproducing took 22m10.294990214s repro crashed as (corrupted=false): BUG: TASK stack guard page was hit at ffffc90004947ff8 (stack is ffffc90004948000..ffffc90004950000) Oops: stack guard page: 0000 [#1] SMP KASAN NOPTI CPU: 3 UID: 0 PID: 5917 Comm: syz.0.18 Not tainted syzkaller #0 PREEMPT(full) Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 RIP: 0010:check_preemption_disabled+0x3/0xe0 lib/smp_processor_id.c:13 Code: 65 8b 05 c4 d9 bc 08 85 c0 74 04 90 0f 0b 90 e9 53 fc ff ff 0f 1f 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 41 54 55 <53> 48 83 ec 08 65 8b 15 89 97 bc 08 65 8b 2d 92 97 bc 08 85 d2 74 RSP: 0018:ffffc90004948000 EFLAGS: 00010283 RAX: 0000000000000000 RBX: ffff888023aaf700 RCX: 0000000000000000 RDX: ffff88802c33a580 RSI: ffffffff8c620c00 RDI: ffffffff8c620c40 RBP: 0000000000000001 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000000 R12: ffff888026ed1000 R13: ffff888049077358 R14: ffff888026ed1038 R15: ffff888023aaf700 FS: 000055557f8ff500(0000) GS:ffff8880d5e64000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffc90004947ff8 CR3: 00000000223e8000 CR4: 0000000000352ef0 Call Trace: rcu_is_watching_curr_cpu include/linux/context_tracking.h:128 [inline] rcu_is_watching+0x13/0xc0 kernel/rcu/tree.c:753 trace_svcsock_write_space include/trace/events/sunrpc.h:2317 [inline] svc_write_space+0x223/0x2b0 net/sunrpc/svcsock.c:429 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 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svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_sock_setbufsize+0x18d/0x220 net/sunrpc/svcsock.c:386 svc_udp_init net/sunrpc/svcsock.c:854 [inline] svc_setup_socket+0xb2f/0x1090 net/sunrpc/svcsock.c:1498 svc_addsock+0x2fd/0x760 net/sunrpc/svcsock.c:1547 __write_ports_addfd fs/nfsd/nfsctl.c:749 [inline] __write_ports fs/nfsd/nfsctl.c:812 [inline] write_ports+0xa5b/0xcc0 fs/nfsd/nfsctl.c:868 nfsctl_transaction_write+0x106/0x1a0 fs/nfsd/nfsctl.c:114 vfs_write+0x2aa/0x1050 fs/read_write.c:685 ksys_write+0x12a/0x250 fs/read_write.c:739 do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline] do_syscall_64+0x123/0x790 arch/x86/entry/syscall_64.c:84 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fbf2f79e159 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:00007ffd81ef3768 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007fbf2fa25fa0 RCX: 00007fbf2f79e159 RDX: 0000000000000001 RSI: 0000200000000240 RDI: 0000000000000006 RBP: 00007fbf2f835024 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fbf2fa25fac R14: 00007fbf2fa25fa0 R15: 00007fbf2fa25fa0 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:check_preemption_disabled+0x3/0xe0 lib/smp_processor_id.c:13 Code: 65 8b 05 c4 d9 bc 08 85 c0 74 04 90 0f 0b 90 e9 53 fc ff ff 0f 1f 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 41 54 55 <53> 48 83 ec 08 65 8b 15 89 97 bc 08 65 8b 2d 92 97 bc 08 85 d2 74 RSP: 0018:ffffc90004948000 EFLAGS: 00010283 RAX: 0000000000000000 RBX: ffff888023aaf700 RCX: 0000000000000000 RDX: ffff88802c33a580 RSI: ffffffff8c620c00 RDI: ffffffff8c620c40 RBP: 0000000000000001 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000000 R12: ffff888026ed1000 R13: ffff888049077358 R14: ffff888026ed1038 R15: ffff888023aaf700 FS: 000055557f8ff500(0000) GS:ffff8880d5e64000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffc90004947ff8 CR3: 00000000223e8000 CR4: 0000000000352ef0 ---------------- Code disassembly (best guess): 0: 65 8b 05 c4 d9 bc 08 mov %gs:0x8bcd9c4(%rip),%eax # 0x8bcd9cb 7: 85 c0 test %eax,%eax 9: 74 04 je 0xf b: 90 nop c: 0f 0b ud2 e: 90 nop f: e9 53 fc ff ff jmp 0xfffffc67 14: 0f 1f 00 nopl (%rax) 17: 90 nop 18: 90 nop 19: 90 nop 1a: 90 nop 1b: 90 nop 1c: 90 nop 1d: 90 nop 1e: 90 nop 1f: 90 nop 20: 90 nop 21: 90 nop 22: 90 nop 23: 90 nop 24: 90 nop 25: 90 nop 26: 90 nop 27: 41 54 push %r12 29: 55 push %rbp * 2a: 53 push %rbx <-- trapping instruction 2b: 48 83 ec 08 sub $0x8,%rsp 2f: 65 8b 15 89 97 bc 08 mov %gs:0x8bc9789(%rip),%edx # 0x8bc97bf 36: 65 8b 2d 92 97 bc 08 mov %gs:0x8bc9792(%rip),%ebp # 0x8bc97cf 3d: 85 d2 test %edx,%edx 3f: 74 .byte 0x74 final repro crashed as (corrupted=false): BUG: TASK stack guard page was hit at ffffc90004947ff8 (stack is ffffc90004948000..ffffc90004950000) Oops: stack guard page: 0000 [#1] SMP KASAN NOPTI CPU: 3 UID: 0 PID: 5917 Comm: syz.0.18 Not tainted syzkaller #0 PREEMPT(full) Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 RIP: 0010:check_preemption_disabled+0x3/0xe0 lib/smp_processor_id.c:13 Code: 65 8b 05 c4 d9 bc 08 85 c0 74 04 90 0f 0b 90 e9 53 fc ff ff 0f 1f 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 41 54 55 <53> 48 83 ec 08 65 8b 15 89 97 bc 08 65 8b 2d 92 97 bc 08 85 d2 74 RSP: 0018:ffffc90004948000 EFLAGS: 00010283 RAX: 0000000000000000 RBX: ffff888023aaf700 RCX: 0000000000000000 RDX: ffff88802c33a580 RSI: ffffffff8c620c00 RDI: ffffffff8c620c40 RBP: 0000000000000001 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000000 R12: ffff888026ed1000 R13: ffff888049077358 R14: ffff888026ed1038 R15: ffff888023aaf700 FS: 000055557f8ff500(0000) GS:ffff8880d5e64000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffc90004947ff8 CR3: 00000000223e8000 CR4: 0000000000352ef0 Call Trace: rcu_is_watching_curr_cpu include/linux/context_tracking.h:128 [inline] rcu_is_watching+0x13/0xc0 kernel/rcu/tree.c:753 trace_svcsock_write_space include/trace/events/sunrpc.h:2317 [inline] svc_write_space+0x223/0x2b0 net/sunrpc/svcsock.c:429 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 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net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_write_space+0xe6/0x2b0 net/sunrpc/svcsock.c:430 svc_sock_setbufsize+0x18d/0x220 net/sunrpc/svcsock.c:386 svc_udp_init net/sunrpc/svcsock.c:854 [inline] svc_setup_socket+0xb2f/0x1090 net/sunrpc/svcsock.c:1498 svc_addsock+0x2fd/0x760 net/sunrpc/svcsock.c:1547 __write_ports_addfd fs/nfsd/nfsctl.c:749 [inline] __write_ports fs/nfsd/nfsctl.c:812 [inline] write_ports+0xa5b/0xcc0 fs/nfsd/nfsctl.c:868 nfsctl_transaction_write+0x106/0x1a0 fs/nfsd/nfsctl.c:114 vfs_write+0x2aa/0x1050 fs/read_write.c:685 ksys_write+0x12a/0x250 fs/read_write.c:739 do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline] do_syscall_64+0x123/0x790 arch/x86/entry/syscall_64.c:84 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fbf2f79e159 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:00007ffd81ef3768 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007fbf2fa25fa0 RCX: 00007fbf2f79e159 RDX: 0000000000000001 RSI: 0000200000000240 RDI: 0000000000000006 RBP: 00007fbf2f835024 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fbf2fa25fac R14: 00007fbf2fa25fa0 R15: 00007fbf2fa25fa0 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:check_preemption_disabled+0x3/0xe0 lib/smp_processor_id.c:13 Code: 65 8b 05 c4 d9 bc 08 85 c0 74 04 90 0f 0b 90 e9 53 fc ff ff 0f 1f 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 41 54 55 <53> 48 83 ec 08 65 8b 15 89 97 bc 08 65 8b 2d 92 97 bc 08 85 d2 74 RSP: 0018:ffffc90004948000 EFLAGS: 00010283 RAX: 0000000000000000 RBX: ffff888023aaf700 RCX: 0000000000000000 RDX: ffff88802c33a580 RSI: ffffffff8c620c00 RDI: ffffffff8c620c40 RBP: 0000000000000001 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000000 R12: ffff888026ed1000 R13: ffff888049077358 R14: ffff888026ed1038 R15: ffff888023aaf700 FS: 000055557f8ff500(0000) GS:ffff8880d5e64000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffc90004947ff8 CR3: 00000000223e8000 CR4: 0000000000352ef0 ---------------- Code disassembly (best guess): 0: 65 8b 05 c4 d9 bc 08 mov %gs:0x8bcd9c4(%rip),%eax # 0x8bcd9cb 7: 85 c0 test %eax,%eax 9: 74 04 je 0xf b: 90 nop c: 0f 0b ud2 e: 90 nop f: e9 53 fc ff ff jmp 0xfffffc67 14: 0f 1f 00 nopl (%rax) 17: 90 nop 18: 90 nop 19: 90 nop 1a: 90 nop 1b: 90 nop 1c: 90 nop 1d: 90 nop 1e: 90 nop 1f: 90 nop 20: 90 nop 21: 90 nop 22: 90 nop 23: 90 nop 24: 90 nop 25: 90 nop 26: 90 nop 27: 41 54 push %r12 29: 55 push %rbp * 2a: 53 push %rbx <-- trapping instruction 2b: 48 83 ec 08 sub $0x8,%rsp 2f: 65 8b 15 89 97 bc 08 mov %gs:0x8bc9789(%rip),%edx # 0x8bc97bf 36: 65 8b 2d 92 97 bc 08 mov %gs:0x8bc9792(%rip),%ebp # 0x8bc97cf 3d: 85 d2 test %edx,%edx 3f: 74 .byte 0x74