Extracting prog: 32m11.354651183s
Minimizing prog: 14m34.5287318s
Simplifying prog options: 0s
Extracting C: 52.07058894s
Simplifying C: 7m29.356385026s


extracting reproducer from 51 programs
testing a last program of every proc
single: executing 11 programs separately with timeout 6m0s
testing program (duration=6m0s, {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}}): prlimit64-sched_setscheduler-getpid-sched_setscheduler-mmap-socketpair$unix-connect$unix-recvmmsg-sendmsg$inet-socketpair$unix-socketpair$unix-sendmsg$inet-recvmsg$unix-mmap$IORING_OFF_SQ_RING-sendmsg$inet-socketpair$unix-syz_ublk_add_dev-socket$inet6_tcp-dup-syz_ublk_setup_queues
detailed listing:
executing program 0:
prlimit64(0x0, 0xe, &(0x7f00000001c0)={0x8, 0xf32}, 0x0)
sched_setscheduler(0x0, 0x1, &(0x7f0000000080)=0x7)
r0 = getpid()
sched_setscheduler(r0, 0x1, &(0x7f0000000200)=0x6)
mmap(&(0x7f0000000000/0xb36000)=nil, 0xb36000, 0xb635773f07ebbeea, 0x8031, 0xffffffffffffffff, 0x0)
socketpair$unix(0x1, 0x2, 0x0, &(0x7f0000000200)={<r1=>0xffffffffffffffff})
connect$unix(r1, &(0x7f000057eff8)=@abs, 0x6e)
recvmmsg(r1, &(0x7f00000000c0), 0x10106, 0x2, 0x0)
sendmsg$inet(0xffffffffffffffff, &(0x7f0000001b00)={0x0, 0x0, 0x0, 0x0, &(0x7f0000001d80)=ANY=[@ANYBLOB="28010000000000000100000001"], 0x128}, 0x4004000)
socketpair$unix(0x1, 0x5, 0x0, &(0x7f0000000080))
socketpair$unix(0x1, 0x2, 0x0, &(0x7f0000000100)={<r2=>0xffffffffffffffff, <r3=>0xffffffffffffffff})
sendmsg$inet(r3, &(0x7f0000001b00)={0x0, 0x0, 0x0, 0x0, &(0x7f0000001d80)=ANY=[], 0x128}, 0x0)
recvmsg$unix(r2, &(0x7f0000000000)={0x0, 0x0, 0x0, 0x0, &(0x7f0000000240)=[@cred={{0x1c}}, @rights={{0x10}}, @rights={{0x10}}], 0x40}, 0x80)
mmap$IORING_OFF_SQ_RING(0x0, 0xc00000, 0x2000007, 0x401d031, 0xffffffffffffffff, 0x0)
sendmsg$inet(0xffffffffffffffff, 0x0, 0x80)
socketpair$unix(0x1, 0x0, 0x0, 0x0)
syz_ublk_add_dev(0xffffffffffffffff, 0x0, 0x0, 0x0, &(0x7f0000000200)={0x2e, 0x0, 0x0, 0xffffffffffffffff, 0xc0207504, 0x0, 0x0, 0x0, 0x0, 0x4, 0x0, 0x0, '\x00', {0xffffffff, 0xffff, 0x40, &(0x7f0000000440)=@new_dev={0x4, 0x3c9, 0x0, 0x0, 0x1000, 0xffffffff, 0x0, 0x0, 0x40}}}, &(0x7f0000000300)=<r4=>0x0)
r5 = socket$inet6_tcp(0xa, 0x1, 0x0)
r6 = dup(r5)
syz_ublk_setup_queues(r6, r4, &(0x7f0000000880)={0x0, 0xfffffffe, 0x0, 0x4, 0x1f4}, &(0x7f0000000a80)=[{0x0, 0x0, 0xffffffffffffffff, {0x0, 0xe704, 0x800, 0x0, 0x6}}, {0x0, 0x0, 0xffffffffffffffff, {0x0, 0x5c87, 0x8000, 0x3, 0xbaa}}, {0x0, 0x0, 0xffffffffffffffff, {0x0, 0x8684, 0x2, 0x40040001, 0x334}}, {0x0, 0x0, 0xffffffffffffffff, {0x0, 0xec4b, 0x200, 0x1, 0xffffffff}}], 0x1, 0x0, 0x0)

program did not crash
testing program (duration=6m0s, {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}}): bpf$MAP_CREATE-openat$sysfs-sendfile-bpf$MAP_CREATE-mmap$IORING_OFF_SQ_RING-prlimit64-sched_setscheduler-getpid-sched_setscheduler-mmap-socketpair$unix-fsconfig$FSCONFIG_SET_PATH_EMPTY-connect$unix-sendmmsg$unix-socket$nl_xfrm-recvmmsg-sched_setscheduler-keyctl$session_to_parent-bpf$PROG_BIND_MAP-ioctl$SNDRV_PCM_IOCTL_HW_PARAMS-syz_init_net_socket$bt_hci-bind$bt_hci-write-write-socket-ioctl$sock_SIOCETHTOOL-bpf$PROG_LOAD
detailed listing:
executing program 0:
bpf$MAP_CREATE(0x0, &(0x7f00000009c0)=ANY=[], 0x48)
r0 = openat$sysfs(0xffffffffffffff9c, 0x0, 0x100102, 0x40)
sendfile(r0, r0, 0x0, 0x6)
bpf$MAP_CREATE(0x0, 0x0, 0x0)
mmap$IORING_OFF_SQ_RING(0x110c230000, 0x8000002, 0x2000007, 0x401d031, 0xffffffffffffffff, 0x0)
prlimit64(0x0, 0xe, &(0x7f0000000140)={0x7, 0x100}, 0x0)
sched_setscheduler(0x0, 0x1, &(0x7f0000000240)=0x7)
r1 = getpid()
sched_setscheduler(r1, 0x1, &(0x7f00000000c0)=0x7)
mmap(&(0x7f0000000000/0xb36000)=nil, 0xb36000, 0xb635773f06ebbeee, 0x8031, 0xffffffffffffffff, 0x0)
socketpair$unix(0x1, 0x2, 0x0, 0x0)
fsconfig$FSCONFIG_SET_PATH_EMPTY(r0, 0x4, &(0x7f0000000040)='[)\x00', 0x0, 0xffffffffffffffff)
connect$unix(0xffffffffffffffff, &(0x7f000057eff8)=@abs, 0x6e)
sendmmsg$unix(0xffffffffffffffff, &(0x7f0000000000), 0x651, 0x0)
socket$nl_xfrm(0x10, 0x3, 0x6)
recvmmsg(0xffffffffffffffff, 0x0, 0x0, 0x2, 0x0)
sched_setscheduler(0x0, 0x2, &(0x7f0000000000)=0x6)
keyctl$session_to_parent(0x12)
bpf$PROG_BIND_MAP(0xa, 0x0, 0x0)
ioctl$SNDRV_PCM_IOCTL_HW_PARAMS(0xffffffffffffffff, 0xc2604111, 0x0)
r2 = syz_init_net_socket$bt_hci(0x1f, 0x3, 0x1)
bind$bt_hci(r2, &(0x7f00000001c0)={0x1f, 0xffff, 0x3}, 0x6)
write(r2, 0x0, 0x0)
write(r2, &(0x7f0000000280)="1b000000080011aaaaaaaaaa0100", 0xe)
r3 = socket(0x400000000010, 0x3, 0x0)
ioctl$sock_SIOCETHTOOL(r3, 0x89f0, &(0x7f0000000080)={'bridge0\x00', &(0x7f0000000100)=@ethtool_ringparam={0x11, 0x0, 0x10001, 0x0, 0x2, 0x0, 0x0, 0x3, 0x4}})
bpf$PROG_LOAD(0x5, &(0x7f00000000c0)={0xe, 0xc, &(0x7f0000000880)=ANY=[], 0x0, 0x0, 0x0, 0x0, 0x40f00, 0x20, '\x00', 0x0, @fallback=0x8, 0xffffffffffffffff, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x2f86}, 0x94)

program did not crash
testing program (duration=6m0s, {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}}): openat$tun-ioctl$TUNSETIFF-openat$tun-close-socket$nl_generic-syz_genetlink_get_family_id$tipc-sendmsg$TIPC_CMD_ENABLE_BEARER-ioctl$SIOCSIFHWADDR-socket$nl_route-ioctl$sock_SIOCGIFINDEX-sendmsg$nl_route_sched-socket$nl_route-ioctl$sock_SIOCGIFINDEX-sendmsg$nl_route_sched-ioctl$SIOCSIFHWADDR
detailed listing:
executing program 0:
r0 = openat$tun(0xffffffffffffff9c, &(0x7f0000000100), 0x0, 0x0)
ioctl$TUNSETIFF(r0, 0x400454ca, &(0x7f0000000040)={'syzkaller0\x00', 0x2})
r1 = openat$tun(0xffffffffffffff9c, &(0x7f0000000400), 0x0, 0x0)
close(r1)
r2 = socket$nl_generic(0x10, 0x3, 0x10)
syz_genetlink_get_family_id$tipc(&(0x7f00000000c0), r2)
sendmsg$TIPC_CMD_ENABLE_BEARER(r2, &(0x7f0000000080)={0x0, 0x0, &(0x7f0000000280)={0x0, 0x38}}, 0x0)
ioctl$SIOCSIFHWADDR(r1, 0x8914, &(0x7f0000002280)={'syzkaller0\x00', @multicast})
r3 = socket$nl_route(0x10, 0x3, 0x0)
ioctl$sock_SIOCGIFINDEX(r2, 0x8933, &(0x7f0000000540)={'syzkaller0\x00', <r4=>0x0})
sendmsg$nl_route_sched(r3, &(0x7f00000002c0)={0x0, 0x0, &(0x7f0000000000)={&(0x7f0000000880)=@newqdisc={0x6c, 0x24, 0x4ee4e6a52ff56541, 0x1001, 0x25dfdbfd, {0x0, 0x0, 0x0, r4, {0x0, 0xb}, {0xffff, 0xffff}, {0xfff2}}, [@qdisc_kind_options=@q_tbf={{0x8}, {0x40, 0x2, [@TCA_TBF_PRATE64={0xc, 0x5, 0xc2240edb8ac75ac7}, @TCA_TBF_BURST={0x8, 0x6, 0xff}, @TCA_TBF_PARMS={0x28, 0x1, {{0x5a, 0x2, 0x84a, 0x9, 0x1, 0x800}, {0x8c, 0x1, 0xfffc, 0x7fff, 0x4, 0xb}, 0x5, 0x34, 0x91f}}]}}]}, 0x6c}, 0x1, 0x0, 0x0, 0x40088c1}, 0x50)
r5 = socket$nl_route(0x10, 0x3, 0x0)
ioctl$sock_SIOCGIFINDEX(r5, 0x8933, &(0x7f0000000100)={'syzkaller0\x00', <r6=>0x0})
sendmsg$nl_route_sched(r5, &(0x7f00000003c0)={0x0, 0x0, &(0x7f0000000300)={&(0x7f0000000140)=@newqdisc={0x58, 0x24, 0x4ee4e6a52ff56541, 0x70b926, 0x25dfdbfe, {0x0, 0x0, 0x0, r6, {0x0, 0x8}, {0xffff, 0xb}, {0xffff, 0xffe0}}, [@qdisc_kind_options=@q_sfb={{0x8}, {0x2c, 0x2, @TCA_SFB_PARMS={0x28, 0x1, {0x7, 0x3, 0x6, 0x1, 0x1, 0xa2, 0x20fff, 0xfffffffa, 0x8}}}}]}, 0x58}, 0x1, 0x0, 0x0, 0x40000b0}, 0x4890)
ioctl$SIOCSIFHWADDR(r1, 0x8922, &(0x7f0000002280)={'syzkaller0\x00', @random="2b0100004ec6"})

program did not crash
testing program (duration=6m0s, {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}}): ioctl$ifreq_SIOCGIFINDEX_team-sendmsg$nl_route_sched-prlimit64-syz_emit_ethernet-sched_setscheduler-getpid-sched_setscheduler-mmap-socketpair$unix-connect$unix-sendmmsg$unix-recvmmsg-sched_setscheduler-socket$nl_generic-syz_genetlink_get_family_id$nl80211-ioctl$sock_SIOCGIFINDEX_80211-sendmsg$NL80211_CMD_TRIGGER_SCAN
detailed listing:
executing program 0:
ioctl$ifreq_SIOCGIFINDEX_team(0xffffffffffffffff, 0x8933, &(0x7f0000000380))
sendmsg$nl_route_sched(0xffffffffffffffff, 0x0, 0x4004024)
prlimit64(0x0, 0xe, &(0x7f0000000140)={0x8, 0x88}, 0x0)
syz_emit_ethernet(0x0, 0x0, 0x0)
sched_setscheduler(0x0, 0x1, &(0x7f0000000240)=0x7)
r0 = getpid()
sched_setscheduler(r0, 0x2, &(0x7f0000000200)=0x7)
mmap(&(0x7f0000000000/0xb36000)=nil, 0xb36000, 0xb635773f06ebbeee, 0x8031, 0xffffffffffffffff, 0x0)
socketpair$unix(0x1, 0x2, 0x0, &(0x7f0000000200)={<r1=>0xffffffffffffffff, <r2=>0xffffffffffffffff})
connect$unix(r1, &(0x7f000057eff8)=@abs, 0x6e)
sendmmsg$unix(r2, 0x0, 0x0, 0x0)
recvmmsg(r1, &(0x7f00000000c0), 0x10106, 0x2, 0x0)
sched_setscheduler(0x0, 0x2, &(0x7f0000000000)=0x6)
r3 = socket$nl_generic(0x10, 0x3, 0x10)
r4 = syz_genetlink_get_family_id$nl80211(&(0x7f0000000280), 0xffffffffffffffff)
ioctl$sock_SIOCGIFINDEX_80211(r3, 0x8933, &(0x7f0000000400)={'wlan0\x00', <r5=>0x0})
sendmsg$NL80211_CMD_TRIGGER_SCAN(r3, &(0x7f0000000080)={0x0, 0x0, &(0x7f0000000e40)={&(0x7f0000000500)={0x28, r4, 0x1, 0x70bd2a, 0x25dfdbfd, {{}, {@val={0x8, 0x3, r5}, @void}}, [@NL80211_ATTR_BSSID={0xa, 0xf5, @from_mac=@broadcast}]}, 0x28}, 0x1, 0x0, 0x0, 0x805}, 0x240480c4)

program did not crash
testing program (duration=6m0s, {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}}): openat$tun-ioctl$TUNSETIFF-socket$kcm-socket-socket$unix-ioctl$sock_SIOCGIFINDEX-sendmsg$nl_route_sched-socket$unix-ioctl$sock_SIOCGIFINDEX-socket-sendmsg$nl_route_sched-openat$tun-close-socket$nl_generic-ioctl$SIOCSIFHWADDR-sendmsg$kcm
detailed listing:
executing program 0:
r0 = openat$tun(0xffffffffffffff9c, &(0x7f0000000000), 0x100, 0x0)
ioctl$TUNSETIFF(r0, 0x400454ca, &(0x7f0000000040)={'syzkaller0\x00', 0x7101})
r1 = socket$kcm(0x11, 0x3, 0x0)
r2 = socket(0x400000000010, 0x3, 0x0)
r3 = socket$unix(0x1, 0x1, 0x0)
ioctl$sock_SIOCGIFINDEX(r3, 0x8933, &(0x7f0000000080)={'syzkaller0\x00', <r4=>0x0})
sendmsg$nl_route_sched(r2, &(0x7f00000000c0)={0x0, 0x0, &(0x7f0000000100)={&(0x7f0000000140)=@newqdisc={0x24, 0x24, 0x4ee4e6a52ff56541, 0x70bd2a, 0xffffffff, {0x0, 0x0, 0x0, r4, {0x0, 0xfff1}, {0xffff, 0xffff}, {0x0, 0xf}}}, 0x24}}, 0x0)
r5 = socket$unix(0x1, 0x1, 0x0)
ioctl$sock_SIOCGIFINDEX(r5, 0x8933, &(0x7f00000001c0)={'syzkaller0\x00', <r6=>0x0})
r7 = socket(0x10, 0x3, 0x0)
sendmsg$nl_route_sched(r7, &(0x7f0000000200)={0x0, 0x0, &(0x7f0000000240)={&(0x7f0000000280)=@newtfilter={0x8c, 0x2c, 0xd27, 0x70bd25, 0x25dfdbfe, {0x0, 0x0, 0x0, r6, {0xb, 0xfff3}, {}, {0x7, 0xfff2}}, [@filter_kind_options=@f_matchall={{0xd}, {0x58, 0x2, [@TCA_MATCHALL_ACT={0x54, 0x2, [@m_skbedit={0x50, 0x1, 0x0, 0x0, {{0xc}, {0x24, 0x2, 0x0, 0x1, [@TCA_SKBEDIT_PARMS={0x18, 0x2, {0x0, 0x8000, 0x20000000, 0x6, 0x77}}, @TCA_SKBEDIT_QUEUE_MAPPING={0x6, 0x4, 0x6}]}, {0x4}, {0xc, 0x7, {0x0, 0x1}}, {0xc, 0x8, {0x2, 0x3}}}}]}]}}]}, 0x8c}, 0x1, 0x0, 0x0, 0x24040894}, 0x0)
r8 = openat$tun(0xffffffffffffff9c, &(0x7f0000000340), 0x0, 0x0)
close(r8)
socket$nl_generic(0x10, 0x3, 0x10)
ioctl$SIOCSIFHWADDR(r8, 0x8914, &(0x7f0000000380)={'syzkaller0\x00', @multicast})
sendmsg$kcm(r1, &(0x7f00000003c0)={&(0x7f0000000400)=@xdp={0x2c, 0x7, r4, 0x3e}, 0x80, &(0x7f0000000480)=[{&(0x7f00000004c0)="81", 0x1}], 0x1}, 0x4)

program did not crash
testing program (duration=6m0s, {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, &(0x7f0000000080)='./nfsd\x00', 0x1ff)
mount(0x0, &(0x7f00000000c0)='./nfsd\x00', &(0x7f0000000100)='nfsd\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f00000001c0)='./nfsd/portlist\x00', 0x1, 0x0)
write(r0, &(0x7f0000000200)='udp 2', 0x5)
r1 = openat(0xffffffffffffff9c, &(0x7f0000000140)='./nfsd/versions\x00', 0x2, 0x0)
write(r1, &(0x7f0000000180), 0x0)

program crashed: kernel BUG in svc_destroy
single: successfully extracted reproducer
found reproducer with 6 syscalls
minimizing guilty program
testing program (duration=56.795726484s, {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, &(0x7f0000000080)='./nfsd\x00', 0x1ff)
mount(0x0, &(0x7f00000000c0)='./nfsd\x00', &(0x7f0000000100)='nfsd\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f00000001c0)='./nfsd/portlist\x00', 0x1, 0x0)
write(r0, &(0x7f0000000200)='udp 2', 0x5)
openat(0xffffffffffffff9c, &(0x7f0000000140)='./nfsd/versions\x00', 0x2, 0x0)

program crashed: kernel BUG in svc_destroy
testing program (duration=56.795726484s, {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, &(0x7f0000000080)='./nfsd\x00', 0x1ff)
mount(0x0, &(0x7f00000000c0)='./nfsd\x00', &(0x7f0000000100)='nfsd\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f00000001c0)='./nfsd/portlist\x00', 0x1, 0x0)
write(r0, &(0x7f0000000200)='udp 2', 0x5)

program crashed: kernel BUG in svc_destroy
testing program (duration=56.795726484s, {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
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000080)='./nfsd\x00', 0x1ff)
mount(0x0, &(0x7f00000000c0)='./nfsd\x00', &(0x7f0000000100)='nfsd\x00', 0x0, 0x0)
openat(0xffffffffffffff9c, &(0x7f00000001c0)='./nfsd/portlist\x00', 0x1, 0x0)

program did not crash
testing program (duration=56.795726484s, {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-write
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000080)='./nfsd\x00', 0x1ff)
mount(0x0, &(0x7f00000000c0)='./nfsd\x00', &(0x7f0000000100)='nfsd\x00', 0x0, 0x0)
write(0xffffffffffffffff, &(0x7f0000000200)='udp 2', 0x5)

program did not crash
testing program (duration=56.795726484s, {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, &(0x7f0000000080)='./nfsd\x00', 0x1ff)
r0 = openat(0xffffffffffffff9c, &(0x7f00000001c0)='./nfsd/portlist\x00', 0x1, 0x0)
write(r0, &(0x7f0000000200)='udp 2', 0x5)

program did not crash
testing program (duration=56.795726484s, {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(0x0, &(0x7f00000000c0)='./nfsd\x00', &(0x7f0000000100)='nfsd\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f00000001c0)='./nfsd/portlist\x00', 0x1, 0x0)
write(r0, &(0x7f0000000200)='udp 2', 0x5)

program did not crash
testing program (duration=56.795726484s, {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(0x0, &(0x7f00000000c0)='./nfsd\x00', &(0x7f0000000100)='nfsd\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f00000001c0)='./nfsd/portlist\x00', 0x1, 0x0)
write(r0, &(0x7f0000000200)='udp 2', 0x5)

program did not crash
testing program (duration=56.795726484s, {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, &(0x7f0000000080)='./nfsd\x00', 0x1ff)
mount(0x0, 0x0, &(0x7f0000000100)='nfsd\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f00000001c0)='./nfsd/portlist\x00', 0x1, 0x0)
write(r0, &(0x7f0000000200)='udp 2', 0x5)

program did not crash
testing program (duration=56.795726484s, {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, &(0x7f0000000080)='./nfsd\x00', 0x1ff)
mount(0x0, &(0x7f00000000c0)='./nfsd\x00', 0x0, 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f00000001c0)='./nfsd/portlist\x00', 0x1, 0x0)
write(r0, &(0x7f0000000200)='udp 2', 0x5)

program did not crash
testing program (duration=56.795726484s, {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, &(0x7f0000000080)='./nfsd\x00', 0x1ff)
mount(0x0, &(0x7f00000000c0)='./nfsd\x00', &(0x7f0000000100)='nfsd\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, 0x0, 0x1, 0x0)
write(r0, &(0x7f0000000200)='udp 2', 0x5)

program did not crash
testing program (duration=56.795726484s, {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, &(0x7f0000000080)='./nfsd\x00', 0x1ff)
mount(0x0, &(0x7f00000000c0)='./nfsd\x00', &(0x7f0000000100)='nfsd\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f00000001c0)='./nfsd/portlist\x00', 0x1, 0x0)
write(r0, 0x0, 0x0)

program did not crash
testing program (duration=56.795726484s, {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, &(0x7f0000000080)='./nfsd\x00', 0x1ff)
mount(0x0, &(0x7f00000000c0)='./nfsd\x00', &(0x7f0000000100)='nfsd\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f00000001c0)='./nfsd/portlist\x00', 0x1, 0x0)
write(r0, &(0x7f0000000200), 0x0)

program did not crash
extracting C reproducer
testing compiled C program (duration=56.795726484s, {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=56.795726484s, {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=56.795726484s, {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=56.795726484s, {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=56.795726484s, {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=56.795726484s, {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=56.795726484s, {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=56.795726484s, {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=56.795726484s, {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=56.795726484s, {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, &(0x7f0000000080)='./nfsd\x00', 0x1ff)
mount(0x0, &(0x7f00000000c0)='./nfsd\x00', &(0x7f0000000100)='nfsd\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f00000001c0)='./nfsd/portlist\x00', 0x1, 0x0)
write(r0, &(0x7f0000000200)='udp 2', 0x5)

program crashed: kernel BUG in svc_destroy
validation run: crashed=true
testing program (duration=56.795726484s, {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, &(0x7f0000000080)='./nfsd\x00', 0x1ff)
mount(0x0, &(0x7f00000000c0)='./nfsd\x00', &(0x7f0000000100)='nfsd\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f00000001c0)='./nfsd/portlist\x00', 0x1, 0x0)
write(r0, &(0x7f0000000200)='udp 2', 0x5)

program crashed: kernel BUG in svc_destroy
validation run: crashed=true
testing program (duration=56.795726484s, {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, &(0x7f0000000080)='./nfsd\x00', 0x1ff)
mount(0x0, &(0x7f00000000c0)='./nfsd\x00', &(0x7f0000000100)='nfsd\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f00000001c0)='./nfsd/portlist\x00', 0x1, 0x0)
write(r0, &(0x7f0000000200)='udp 2', 0x5)

program crashed: kernel BUG in svc_destroy
validation run: crashed=true
reproducing took 59m6.415108299s
repro crashed as (corrupted=false):
------------[ cut here ]------------
kernel BUG at net/sunrpc/svc.c:605!
Internal error: Oops - BUG: 00000000f2000800 [#1] PREEMPT SMP
Modules linked in:
CPU: 0 PID: 4462 Comm: syz.0.18 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/14/2026
pstate: 82400005 (Nzcv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--)
pc : svc_destroy+0x178/0x184 net/sunrpc/svc.c:605
lr : svc_destroy+0x178/0x184 net/sunrpc/svc.c:605
sp : ffff800021d97930
x29: ffff800021d97930 x28: 1fffe0001b81f32f x27: ffff0000c3319c00
x26: dfff800000000000 x25: ffff7000043b2f2c x24: ffff800021d97960
x23: ffff0000c42aca00 x22: dfff800000000000 x21: 0000000000000001
x20: ffff0000dc89dc68 x19: ffff0000dc89dc50 x18: 1fffe00033c1877e
x17: ffff80001641d000 x16: ffff8000082dd38c x15: 000000000004ffff
x14: 0000000000000001 x13: 1fffe00033c188f0 x12: 0000000000000000
x11: ff00800010f3ec14 x10: 0000000000000000 x9 : ffff800010f3ec14
x8 : ffff0000c3319c00 x7 : ffff8000083bb394 x6 : 0000000000000000
x5 : 0000000000000080 x4 : 0000000000000001 x3 : 0000000000000000
x2 : 0000000000000006 x1 : 0000000000000000 x0 : 0000000000000000
Call trace:
 svc_destroy+0x178/0x184 net/sunrpc/svc.c:605
 kref_put include/linux/kref.h:65 [inline]
 svc_put include/linux/sunrpc/svc.h:123 [inline]
 __write_ports_addxprt fs/nfsd/nfsctl.c:768 [inline]
 __write_ports fs/nfsd/nfsctl.c:794 [inline]
 write_ports+0x850/0x9f0 fs/nfsd/nfsctl.c:847
 nfsctl_transaction_write+0x114/0x164 fs/nfsd/nfsctl.c:114
 vfs_write+0x2a8/0x7c8 fs/read_write.c:582
 ksys_write+0x12c/0x228 fs/read_write.c:637
 __do_sys_write fs/read_write.c:649 [inline]
 __se_sys_write fs/read_write.c:646 [inline]
 __arm64_sys_write+0x7c/0x90 fs/read_write.c:646
 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
 invoke_syscall+0x98/0x290 arch/arm64/kernel/syscall.c:52
 el0_svc_common+0x13c/0x258 arch/arm64/kernel/syscall.c:140
 do_el0_svc+0x5c/0x134 arch/arm64/kernel/syscall.c:204
 el0_svc+0x58/0x12c arch/arm64/kernel/entry-common.c:637
 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655
 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585
Code: 91026260 97c2d20a 17ffffc8 97c2d19b (d4210000) 
---[ end trace 0000000000000000 ]---

final repro crashed as (corrupted=false):
------------[ cut here ]------------
kernel BUG at net/sunrpc/svc.c:605!
Internal error: Oops - BUG: 00000000f2000800 [#1] PREEMPT SMP
Modules linked in:
CPU: 0 PID: 4462 Comm: syz.0.18 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/14/2026
pstate: 82400005 (Nzcv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--)
pc : svc_destroy+0x178/0x184 net/sunrpc/svc.c:605
lr : svc_destroy+0x178/0x184 net/sunrpc/svc.c:605
sp : ffff800021d97930
x29: ffff800021d97930 x28: 1fffe0001b81f32f x27: ffff0000c3319c00
x26: dfff800000000000 x25: ffff7000043b2f2c x24: ffff800021d97960
x23: ffff0000c42aca00 x22: dfff800000000000 x21: 0000000000000001
x20: ffff0000dc89dc68 x19: ffff0000dc89dc50 x18: 1fffe00033c1877e
x17: ffff80001641d000 x16: ffff8000082dd38c x15: 000000000004ffff
x14: 0000000000000001 x13: 1fffe00033c188f0 x12: 0000000000000000
x11: ff00800010f3ec14 x10: 0000000000000000 x9 : ffff800010f3ec14
x8 : ffff0000c3319c00 x7 : ffff8000083bb394 x6 : 0000000000000000
x5 : 0000000000000080 x4 : 0000000000000001 x3 : 0000000000000000
x2 : 0000000000000006 x1 : 0000000000000000 x0 : 0000000000000000
Call trace:
 svc_destroy+0x178/0x184 net/sunrpc/svc.c:605
 kref_put include/linux/kref.h:65 [inline]
 svc_put include/linux/sunrpc/svc.h:123 [inline]
 __write_ports_addxprt fs/nfsd/nfsctl.c:768 [inline]
 __write_ports fs/nfsd/nfsctl.c:794 [inline]
 write_ports+0x850/0x9f0 fs/nfsd/nfsctl.c:847
 nfsctl_transaction_write+0x114/0x164 fs/nfsd/nfsctl.c:114
 vfs_write+0x2a8/0x7c8 fs/read_write.c:582
 ksys_write+0x12c/0x228 fs/read_write.c:637
 __do_sys_write fs/read_write.c:649 [inline]
 __se_sys_write fs/read_write.c:646 [inline]
 __arm64_sys_write+0x7c/0x90 fs/read_write.c:646
 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
 invoke_syscall+0x98/0x290 arch/arm64/kernel/syscall.c:52
 el0_svc_common+0x13c/0x258 arch/arm64/kernel/syscall.c:140
 do_el0_svc+0x5c/0x134 arch/arm64/kernel/syscall.c:204
 el0_svc+0x58/0x12c arch/arm64/kernel/entry-common.c:637
 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655
 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585
Code: 91026260 97c2d20a 17ffffc8 97c2d19b (d4210000) 
---[ end trace 0000000000000000 ]---