Extracting prog: 26m31.294374251s
Minimizing prog: 1h5m44.727849475s
Simplifying prog options: 0s
Extracting C: 1m22.302938687s
Simplifying C: 15m2.444632436s


extracting reproducer from 31 programs
testing a last program of every proc
single: executing 6 programs separately with timeout 6m0s
testing program (duration=6m0s, {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}}): sendmsg$nl_route-prlimit64-sched_setaffinity-prctl$PR_SCHED_CORE-fsopen-socket$tipc-bind$tipc-setsockopt$TIPC_GROUP_JOIN-socket$nl_generic-syz_genetlink_get_family_id$tipc-sendmsg$TIPC_CMD_SHOW_NAME_TABLE-bpf$MAP_DELETE_ELEM-sendmsg$nl_route-setsockopt$inet6_IPV6_FLOWLABEL_MGR-socket-socket$inet_tcp-bind$inet-setsockopt$inet_tcp_int-connect$inet-socket-socketpair$unix-ioctl$sock_SIOCGIFINDEX-sendmsg$nl_route_sched-sendmsg$nl_route_sched-sendmsg$inet
detailed listing:
executing program 0:
sendmsg$nl_route(0xffffffffffffffff, 0x0, 0x8004)
prlimit64(0x0, 0xe, &(0x7f0000000040)={0x7, 0x100}, 0x0)
sched_setaffinity(0x0, 0x8, &(0x7f00000002c0)=0x81de)
prctl$PR_SCHED_CORE(0x3e, 0x1, 0x0, 0x2, 0x0)
fsopen(0x0, 0x0)
r0 = socket$tipc(0x1e, 0x2, 0x0)
bind$tipc(r0, 0x0, 0x0)
setsockopt$TIPC_GROUP_JOIN(r0, 0x10f, 0x87, &(0x7f0000000240)={0x42, 0x1}, 0x10)
r1 = socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_genetlink_get_family_id$tipc(&(0x7f00000003c0), 0xffffffffffffffff)
sendmsg$TIPC_CMD_SHOW_NAME_TABLE(r1, &(0x7f0000000100)={0x0, 0x0, &(0x7f0000000040)={&(0x7f0000000280)={0x30, r2, 0x1, 0x4, 0x100003, {{}, {}, {0x14, 0x19, {0x9, 0x2, 0x0, 0x2000000}}}}, 0x30}, 0x1, 0x0, 0x0, 0x4008044}, 0x1004)
bpf$MAP_DELETE_ELEM(0x3, &(0x7f0000000380)={0xffffffffffffffff, &(0x7f00000007c0)}, 0x20)
sendmsg$nl_route(0xffffffffffffffff, &(0x7f0000000480)={0x0, 0x0, 0x0, 0x1, 0x0, 0x0, 0x800}, 0x0)
setsockopt$inet6_IPV6_FLOWLABEL_MGR(0xffffffffffffffff, 0x29, 0x20, &(0x7f0000000280)={@private2={0xfc, 0x2, '\x00', 0x1}, 0x8, 0x2, 0x0, 0x9, 0x4, 0x800}, 0x20)
socket(0x2, 0x80805, 0x0)
r3 = socket$inet_tcp(0x2, 0x1, 0x0)
bind$inet(r3, &(0x7f0000000200)={0x2, 0x4e20, @multicast1}, 0x10)
setsockopt$inet_tcp_int(r3, 0x6, 0x2, &(0x7f0000000300)=0x3ff, 0x4)
connect$inet(r3, &(0x7f0000000000)={0x2, 0x4e20, @empty}, 0x10)
r4 = socket(0x10, 0x3, 0x0)
socketpair$unix(0x1, 0x5, 0x0, &(0x7f0000000240)={0xffffffffffffffff, <r5=>0xffffffffffffffff})
ioctl$sock_SIOCGIFINDEX(r5, 0x8933, &(0x7f0000000000)={'lo\x00', <r6=>0x0})
sendmsg$nl_route_sched(r4, &(0x7f0000000040)={0x0, 0x0, &(0x7f0000000780)={&(0x7f0000000080)=@newqdisc={0x60, 0x24, 0xd0f, 0x70bd2d, 0x0, {0x60, 0x0, 0x0, r6, {0x0, 0xa}, {0xffff, 0xffff}, {0x0, 0xffff}}, [@qdisc_kind_options=@q_tbf={{0x8}, {0x34, 0x2, [@TCA_TBF_PARMS={0x28, 0x1, {{0xea, 0x0, 0xfffd, 0x0, 0x9, 0x5}, {0x12, 0x2, 0x0, 0x401, 0x8001, 0x1400}, 0xa5, 0x5, 0x10000000}}, @TCA_TBF_BURST={0x8, 0x6, 0x5f0}]}}]}, 0x60}}, 0x44080)
sendmsg$nl_route_sched(r4, &(0x7f0000000280)={0x0, 0x0, &(0x7f0000000340)={&(0x7f0000000100)=@newqdisc={0x30, 0x24, 0xd0f, 0x70bd25, 0x25dfdbfe, {0x60, 0x0, 0x0, r6, {}, {0x4, 0xa}, {0x7}}, [@qdisc_kind_options=@q_hhf={{0x8}, {0x4}}]}, 0x30}, 0x1, 0x0, 0x0, 0x55}, 0xc010)
sendmsg$inet(r3, &(0x7f00000015c0)={0x0, 0x14, &(0x7f0000001600)=[{&(0x7f0000000240)=' ', 0xffffff1f}], 0x1}, 0x0)

program did not crash
testing program (duration=6m0s, {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-setsockopt$packet_tx_ring-sendmsg$NFT_BATCH-io_uring_setup-pwritev2-io_uring_enter-socket$igmp-setsockopt$MRT_INIT-gettid-timer_create-timer_settime-pipe-vmsplice-mmap-setsockopt$MRT_ADD_MFC_PROXY-openat$kvm-ioctl$KVM_CREATE_VM-syz_clone3-sendmsg$nl_generic
detailed listing:
executing program 0:
r0 = socket(0x1e, 0x4, 0x0)
setsockopt$packet_tx_ring(r0, 0x10f, 0x87, 0x0, 0x0)
sendmsg$NFT_BATCH(0xffffffffffffffff, &(0x7f0000000080)={0x0, 0x0, 0x0}, 0x24004045)
r1 = io_uring_setup(0x899, 0x0)
pwritev2(0xffffffffffffffff, &(0x7f0000000d40), 0x0, 0x3, 0x140000, 0x8)
io_uring_enter(r1, 0x47f0, 0x7721, 0x16, 0x0, 0x0)
r2 = socket$igmp(0x2, 0x3, 0x2)
setsockopt$MRT_INIT(r2, 0x0, 0xc8, 0x0, 0x0)
gettid()
timer_create(0x0, 0x0, &(0x7f0000bbdffc))
timer_settime(0x0, 0x1, &(0x7f0000000040)={{0x0, 0x989680}, {0x0, 0x989680}}, 0x0)
pipe(&(0x7f00000002c0)={<r3=>0xffffffffffffffff})
vmsplice(r3, &(0x7f00000014c0)=[{&(0x7f0000000000)='|', 0xfd}], 0xf, 0x0)
mmap(&(0x7f0000000000/0xb36000)=nil, 0xb36000, 0xb635773f06ebbeee, 0x8031, 0xffffffffffffffff, 0x4b7c7000)
setsockopt$MRT_ADD_MFC_PROXY(0xffffffffffffffff, 0x0, 0xd2, 0x0, 0x0)
r4 = openat$kvm(0xffffffffffffff9c, &(0x7f0000000000), 0x0, 0x0)
ioctl$KVM_CREATE_VM(r4, 0xae01, 0x0)
syz_clone3(0x0, 0x0)
sendmsg$nl_generic(0xffffffffffffffff, &(0x7f0000000080)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000280)=ANY=[], 0x14}, 0x1, 0x3000000}, 0x0)

program did not crash
testing program (duration=6m0s, {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}}): sendmsg$NFT_BATCH-openat$kvm-ioctl$KVM_CREATE_VM-ioctl$KVM_CREATE_IRQCHIP-ioctl$KVM_CREATE_VCPU-syz_kvm_setup_cpu$x86-syz_kvm_setup_cpu$x86-ioctl$KVM_SET_REGS-ioctl$KVM_RUN-ioctl$KVM_SET_VCPU_EVENTS-ioctl$KVM_RUN
detailed listing:
executing program 0:
sendmsg$NFT_BATCH(0xffffffffffffffff, &(0x7f0000000180)={0x0, 0x0, &(0x7f0000009b00)={&(0x7f0000000380)=ANY=[@ANYBLOB="1407"], 0xb4}, 0x1, 0x0, 0x0, 0x30000840}, 0x40)
r0 = openat$kvm(0xffffffffffffff9c, &(0x7f0000000000), 0x0, 0x0)
r1 = ioctl$KVM_CREATE_VM(r0, 0xae01, 0x0)
ioctl$KVM_CREATE_IRQCHIP(r1, 0xae60)
r2 = ioctl$KVM_CREATE_VCPU(r1, 0xae41, 0x0)
syz_kvm_setup_cpu$x86(r1, 0xffffffffffffffff, &(0x7f0000fe8000/0x18000)=nil, &(0x7f00000001c0)=[@text16={0x10, 0x0, 0x4b}], 0x1, 0x0, 0x0, 0x0)
syz_kvm_setup_cpu$x86(0xffffffffffffffff, r2, &(0x7f0000fe8000/0x18000)=nil, &(0x7f0000000100)=[@text64={0x40, &(0x7f0000000200)="f7790066baa00066b86b4266ef66ba420066b8e20066ef0f29902cbb0000c4e2b1ba8c88d9000000666666440f38826b410f7842280f07b8010000000f01d9c4033921820f47a753fd", 0x49}], 0x1, 0x43, 0x0, 0x0)
ioctl$KVM_SET_REGS(r2, 0x4090ae82, &(0x7f0000000040)={[0x7, 0x2, 0xe9b, 0x100, 0xd, 0x7f, 0x44233, 0x200, 0x80, 0x941, 0x8001, 0x6, 0x4, 0x4, 0x20000, 0xb], 0x4, 0x84340})
ioctl$KVM_RUN(r2, 0xae80, 0x0)
ioctl$KVM_SET_VCPU_EVENTS(r2, 0x4400ae8f, &(0x7f0000000140)=@arm64={0x52, 0x6, 0x40, '\x00', 0x10000})
ioctl$KVM_RUN(r2, 0xae80, 0x0)

program did not crash
testing program (duration=6m0s, {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$nl_xfrm-socket$inet6_sctp-sendmsg$inet-socketpair$unix-sendmsg$inet-recvmsg$unix-mmap$IORING_OFF_SQ_RING-socket$alg-prlimit64-sched_setscheduler-sched_setscheduler-mmap-socketpair$unix-connect$unix-sendmmsg$unix-recvmmsg-sched_setscheduler-socketpair$unix-syz_ublk_add_dev-socket$inet6_tcp-dup-syz_ublk_add_dev-syz_ublk_setup_queues
detailed listing:
executing program 0:
socket$nl_xfrm(0x10, 0x3, 0x6)
socket$inet6_sctp(0xa, 0x1, 0x84)
sendmsg$inet(0xffffffffffffffff, &(0x7f0000001b00)={0x0, 0x0, 0x0, 0x0, &(0x7f0000001d80)=ANY=[@ANYBLOB="28010000000000000100000001"], 0x128}, 0x4004000)
socketpair$unix(0x1, 0x2, 0x0, &(0x7f0000000100)={<r0=>0xffffffffffffffff, <r1=>0xffffffffffffffff})
sendmsg$inet(r1, &(0x7f0000001b00)={0x0, 0x0, 0x0, 0x0, &(0x7f0000001d80)=ANY=[], 0x128}, 0x0)
recvmsg$unix(r0, &(0x7f0000000000)={0x0, 0x0, 0x0, 0x0, &(0x7f0000000240)=[@rights={{0x10}}, @rights={{0x10}}, @rights={{0x10}}, @rights={{0x10}}], 0x40}, 0x80)
mmap$IORING_OFF_SQ_RING(0x0, 0xc00000, 0x2000007, 0x401d031, 0xffffffffffffffff, 0x0)
socket$alg(0x26, 0x5, 0x0)
prlimit64(0x0, 0xe, &(0x7f0000000140)={0x7, 0x100}, 0x0)
sched_setscheduler(0x0, 0x1, &(0x7f0000000240)=0x7)
sched_setscheduler(0x0, 0x2, &(0x7f0000000200)=0x7)
mmap(&(0x7f0000000000/0xb36000)=nil, 0xb36000, 0xb635773f06ebbeee, 0x8031, 0xffffffffffffffff, 0x0)
socketpair$unix(0x1, 0x2, 0x0, &(0x7f0000000200)={<r2=>0xffffffffffffffff, <r3=>0xffffffffffffffff})
connect$unix(r2, &(0x7f000057eff8)=@abs, 0x6e)
sendmmsg$unix(r3, &(0x7f0000000000), 0x651, 0x0)
recvmmsg(r2, &(0x7f00000000c0), 0x10106, 0x2, 0x0)
sched_setscheduler(0x0, 0x2, &(0x7f0000000000)=0x6)
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_add_dev(0xffffffffffffffff, 0x0, 0x0, 0x0, 0x0, &(0x7f00000007c0))
syz_ublk_setup_queues(r6, r4, &(0x7f0000000180)={0x0, 0xfffffffe, 0x0, 0x1, 0x1f4}, &(0x7f0000000a80)=[{0x0, 0x0, 0xffffffffffffffff, {0x0, 0xe704, 0x800, 0x1000002, 0x91}}, {0x0, 0x0, 0xffffffffffffffff, {0x0, 0x5c87, 0x20, 0x3, 0x3aa}}, {0x0, 0x0, 0xffffffffffffffff, {0x0, 0x1f70, 0x2, 0x40040001, 0x334}}, {0x0, 0x0, 0xffffffffffffffff, {0x0, 0x4, 0x200, 0x1, 0xffffffff}}], 0x1, 0x0, 0x0)

program did not crash
testing program (duration=6m0s, {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}}): mkdir-mount-openat-write-openat-write
detailed listing:
executing program 0:
mkdir(&(0x7f0000000000)='./nfsd_dir\x00', 0x1ff)
mount(0x0, &(0x7f0000000200)='./nfsd_dir\x00', &(0x7f0000000300)='nfsd\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000600)='./nfsd_dir/portlist\x00', 0x2, 0x0)
write(r0, &(0x7f0000000700)='tcp 2', 0x5)
r1 = openat(0xffffffffffffff9c, &(0x7f0000000800)='./nfsd_dir/threads\x00', 0x2, 0x0)
write(r1, &(0x7f0000000900)='2', 0x1)

program crashed: WARNING in svc_destroy
single: successfully extracted reproducer
found reproducer with 6 syscalls
minimizing guilty program
testing program (duration=6m0s, {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}}): mkdir-mount-openat-write-openat
detailed listing:
executing program 0:
mkdir(&(0x7f0000000000)='./nfsd_dir\x00', 0x1ff)
mount(0x0, &(0x7f0000000200)='./nfsd_dir\x00', &(0x7f0000000300)='nfsd\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000600)='./nfsd_dir/portlist\x00', 0x2, 0x0)
write(r0, &(0x7f0000000700)='tcp 2', 0x5)
openat(0xffffffffffffff9c, &(0x7f0000000800)='./nfsd_dir/threads\x00', 0x2, 0x0)

program crashed: WARNING in svc_destroy
testing program (duration=6m0s, {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}}): mkdir-mount-openat-write
detailed listing:
executing program 0:
mkdir(&(0x7f0000000000)='./nfsd_dir\x00', 0x1ff)
mount(0x0, &(0x7f0000000200)='./nfsd_dir\x00', &(0x7f0000000300)='nfsd\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000600)='./nfsd_dir/portlist\x00', 0x2, 0x0)
write(r0, &(0x7f0000000700)='tcp 2', 0x5)

program crashed: WARNING in svc_destroy
testing program (duration=6m0s, {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}}): mkdir-mount-openat
detailed listing:
executing program 0:
mkdir(&(0x7f0000000000)='./nfsd_dir\x00', 0x1ff)
mount(0x0, &(0x7f0000000200)='./nfsd_dir\x00', &(0x7f0000000300)='nfsd\x00', 0x0, 0x0)
openat(0xffffffffffffff9c, &(0x7f0000000600)='./nfsd_dir/portlist\x00', 0x2, 0x0)

program did not crash
testing program (duration=6m0s, {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}}): mkdir-mount-write
detailed listing:
executing program 0:
mkdir(&(0x7f0000000000)='./nfsd_dir\x00', 0x1ff)
mount(0x0, &(0x7f0000000200)='./nfsd_dir\x00', &(0x7f0000000300)='nfsd\x00', 0x0, 0x0)
write(0xffffffffffffffff, &(0x7f0000000700)='tcp 2', 0x5)

program did not crash
testing program (duration=6m0s, {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}}): mkdir-openat-write
detailed listing:
executing program 0:
mkdir(&(0x7f0000000000)='./nfsd_dir\x00', 0x1ff)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000600)='./nfsd_dir/portlist\x00', 0x2, 0x0)
write(r0, &(0x7f0000000700)='tcp 2', 0x5)

program did not crash
testing program (duration=6m0s, {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}}): mount-openat-write
detailed listing:
executing program 0:
mount(0x0, &(0x7f0000000200)='./nfsd_dir\x00', &(0x7f0000000300)='nfsd\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000600)='./nfsd_dir/portlist\x00', 0x2, 0x0)
write(r0, &(0x7f0000000700)='tcp 2', 0x5)

program did not crash
testing program (duration=6m0s, {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}}): mkdir-mount-openat-write
detailed listing:
executing program 0:
mkdir(0x0, 0x1ff)
mount(0x0, &(0x7f0000000200)='./nfsd_dir\x00', &(0x7f0000000300)='nfsd\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000600)='./nfsd_dir/portlist\x00', 0x2, 0x0)
write(r0, &(0x7f0000000700)='tcp 2', 0x5)

program did not crash
testing program (duration=6m0s, {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}}): mkdir-mount-openat-write
detailed listing:
executing program 0:
mkdir(&(0x7f0000000000)='./nfsd_dir\x00', 0x1ff)
mount(0x0, 0x0, &(0x7f0000000300)='nfsd\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000600)='./nfsd_dir/portlist\x00', 0x2, 0x0)
write(r0, &(0x7f0000000700)='tcp 2', 0x5)

program did not crash
testing program (duration=6m0s, {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}}): mkdir-mount-openat-write
detailed listing:
executing program 0:
mkdir(&(0x7f0000000000)='./nfsd_dir\x00', 0x1ff)
mount(0x0, &(0x7f0000000200)='./nfsd_dir\x00', 0x0, 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000600)='./nfsd_dir/portlist\x00', 0x2, 0x0)
write(r0, &(0x7f0000000700)='tcp 2', 0x5)

program did not crash
testing program (duration=6m0s, {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}}): mkdir-mount-openat-write
detailed listing:
executing program 0:
mkdir(&(0x7f0000000000)='./nfsd_dir\x00', 0x1ff)
mount(0x0, &(0x7f0000000200)='./nfsd_dir\x00', &(0x7f0000000300)='nfsd\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, 0x0, 0x2, 0x0)
write(r0, &(0x7f0000000700)='tcp 2', 0x5)

program did not crash
testing program (duration=6m0s, {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}}): mkdir-mount-openat-write
detailed listing:
executing program 0:
mkdir(&(0x7f0000000000)='./nfsd_dir\x00', 0x1ff)
mount(0x0, &(0x7f0000000200)='./nfsd_dir\x00', &(0x7f0000000300)='nfsd\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000600)='./nfsd_dir/portlist\x00', 0x2, 0x0)
write(r0, 0x0, 0x0)

program did not crash
testing program (duration=6m0s, {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}}): mkdir-mount-openat-write
detailed listing:
executing program 0:
mkdir(&(0x7f0000000000)='./nfsd_dir\x00', 0x1ff)
mount(0x0, &(0x7f0000000200)='./nfsd_dir\x00', &(0x7f0000000300)='nfsd\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000600)='./nfsd_dir/portlist\x00', 0x2, 0x0)
write(r0, &(0x7f0000000700), 0x0)

program did not crash
extracting C reproducer
testing compiled C program (duration=6m0s, {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}}): mkdir-mount-openat-write
program crashed: WARNING in svc_destroy
simplifying C reproducer
testing compiled C program (duration=6m0s, {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}}): mkdir-mount-openat-write
program crashed: WARNING in svc_destroy
testing compiled C program (duration=6m0s, {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}}): mkdir-mount-openat-write
program crashed: WARNING in svc_destroy
testing compiled C program (duration=6m0s, {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}}): mkdir-mount-openat-write
program crashed: WARNING in svc_destroy
testing compiled C program (duration=6m0s, {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}}): mkdir-mount-openat-write
program crashed: WARNING in svc_destroy
testing compiled C program (duration=6m0s, {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}}): mkdir-mount-openat-write
program crashed: no output from test machine
a never seen crash title: no output from test machine, ignore
testing compiled C program (duration=6m0s, {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}}): mkdir-mount-openat-write
program crashed: WARNING in svc_destroy
testing compiled C program (duration=6m0s, {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}}): mkdir-mount-openat-write
program crashed: WARNING in svc_destroy
testing program (duration=6m0s, {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}}): mkdir-mount-openat-write
detailed listing:
executing program 0:
mkdir(&(0x7f0000000000)='./nfsd_dir\x00', 0x1ff)
mount(0x0, &(0x7f0000000200)='./nfsd_dir\x00', &(0x7f0000000300)='nfsd\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000600)='./nfsd_dir/portlist\x00', 0x2, 0x0)
write(r0, &(0x7f0000000700)='tcp 2', 0x5)

program crashed: WARNING in svc_destroy
validation run: crashed=true
testing program (duration=6m0s, {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}}): mkdir-mount-openat-write
detailed listing:
executing program 0:
mkdir(&(0x7f0000000000)='./nfsd_dir\x00', 0x1ff)
mount(0x0, &(0x7f0000000200)='./nfsd_dir\x00', &(0x7f0000000300)='nfsd\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000600)='./nfsd_dir/portlist\x00', 0x2, 0x0)
write(r0, &(0x7f0000000700)='tcp 2', 0x5)

program crashed: WARNING in svc_destroy
validation run: crashed=true
testing program (duration=6m0s, {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}}): mkdir-mount-openat-write
detailed listing:
executing program 0:
mkdir(&(0x7f0000000000)='./nfsd_dir\x00', 0x1ff)
mount(0x0, &(0x7f0000000200)='./nfsd_dir\x00', &(0x7f0000000300)='nfsd\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000600)='./nfsd_dir/portlist\x00', 0x2, 0x0)
write(r0, &(0x7f0000000700)='tcp 2', 0x5)

program crashed: WARNING in svc_destroy
validation run: crashed=true
reproducing took 1h53m39.830171219s
repro crashed as (corrupted=false):
------------[ cut here ]------------
SVC: permsocks remain for nfsd
WARNING: CPU: 0 PID: 5937 at net/sunrpc/svc.c:583 svc_destroy+0x2ed/0x390 net/sunrpc/svc.c:582
Modules linked in:
CPU: 0 PID: 5937 Comm: syz.0.18 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
RIP: 0010:svc_destroy+0x2ed/0x390 net/sunrpc/svc.c:582
Code: 24 49 83 c7 20 4c 89 f8 48 c1 e8 03 42 80 3c 28 00 74 08 4c 89 ff e8 12 40 33 f8 49 8b 37 48 c7 c7 20 4d d9 8b e8 d3 93 a4 f7 <0f> 0b e9 78 fd ff ff e8 07 c7 da f7 c6 05 42 5b ca 04 01 4c 89 e0
RSP: 0018:ffffc900032dfae0 EFLAGS: 00010246
RAX: 662fc07097b0fc00 RBX: ffff888026c74450 RCX: ffff8880236b3c00
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000002
RBP: ffffc900032dfcb8 R08: ffff8880b8e28c53 R09: 1ffff110171c518a
R10: dffffc0000000000 R11: ffffed10171c518b R12: ffff888026c74400
R13: dffffc0000000000 R14: ffff888026c74450 R15: ffffffff8d3e1840
FS:  000055556b46e500(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffecc7cdd54 CR3: 000000007d6d8000 CR4: 00000000003506f0
Call Trace:
 <TASK>
 kref_put include/linux/kref.h:65 [inline]
 svc_put include/linux/sunrpc/svc.h:124 [inline]
 __write_ports_addxprt fs/nfsd/nfsctl.c:765 [inline]
 __write_ports fs/nfsd/nfsctl.c:791 [inline]
 write_ports+0xb99/0xfa0 fs/nfsd/nfsctl.c:844
 nfsctl_transaction_write+0x10c/0x150 fs/nfsd/nfsctl.c:113
 vfs_write+0x299/0x9a0 fs/read_write.c:582
 ksys_write+0x151/0x260 fs/read_write.c:637
 do_syscall_x64 arch/x86/entry/common.c:46 [inline]
 do_syscall_64+0x55/0xb0 arch/x86/entry/common.c:76
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7fc11c39e0d9
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:00007ffc52d53468 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007fc11c625fa0 RCX: 00007fc11c39e0d9
RDX: 0000000000000005 RSI: 0000200000000700 RDI: 0000000000000003
RBP: 00007fc11c435024 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fc11c625fac R14: 00007fc11c625fa0 R15: 00007fc11c625fa0
 </TASK>

final repro crashed as (corrupted=false):
------------[ cut here ]------------
SVC: permsocks remain for nfsd
WARNING: CPU: 0 PID: 5937 at net/sunrpc/svc.c:583 svc_destroy+0x2ed/0x390 net/sunrpc/svc.c:582
Modules linked in:
CPU: 0 PID: 5937 Comm: syz.0.18 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
RIP: 0010:svc_destroy+0x2ed/0x390 net/sunrpc/svc.c:582
Code: 24 49 83 c7 20 4c 89 f8 48 c1 e8 03 42 80 3c 28 00 74 08 4c 89 ff e8 12 40 33 f8 49 8b 37 48 c7 c7 20 4d d9 8b e8 d3 93 a4 f7 <0f> 0b e9 78 fd ff ff e8 07 c7 da f7 c6 05 42 5b ca 04 01 4c 89 e0
RSP: 0018:ffffc900032dfae0 EFLAGS: 00010246
RAX: 662fc07097b0fc00 RBX: ffff888026c74450 RCX: ffff8880236b3c00
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000002
RBP: ffffc900032dfcb8 R08: ffff8880b8e28c53 R09: 1ffff110171c518a
R10: dffffc0000000000 R11: ffffed10171c518b R12: ffff888026c74400
R13: dffffc0000000000 R14: ffff888026c74450 R15: ffffffff8d3e1840
FS:  000055556b46e500(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffecc7cdd54 CR3: 000000007d6d8000 CR4: 00000000003506f0
Call Trace:
 <TASK>
 kref_put include/linux/kref.h:65 [inline]
 svc_put include/linux/sunrpc/svc.h:124 [inline]
 __write_ports_addxprt fs/nfsd/nfsctl.c:765 [inline]
 __write_ports fs/nfsd/nfsctl.c:791 [inline]
 write_ports+0xb99/0xfa0 fs/nfsd/nfsctl.c:844
 nfsctl_transaction_write+0x10c/0x150 fs/nfsd/nfsctl.c:113
 vfs_write+0x299/0x9a0 fs/read_write.c:582
 ksys_write+0x151/0x260 fs/read_write.c:637
 do_syscall_x64 arch/x86/entry/common.c:46 [inline]
 do_syscall_64+0x55/0xb0 arch/x86/entry/common.c:76
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7fc11c39e0d9
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:00007ffc52d53468 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007fc11c625fa0 RCX: 00007fc11c39e0d9
RDX: 0000000000000005 RSI: 0000200000000700 RDI: 0000000000000003
RBP: 00007fc11c435024 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fc11c625fac R14: 00007fc11c625fa0 R15: 00007fc11c625fa0
 </TASK>