Extracting prog: 48m18.033737839s Minimizing prog: 11m13.899824637s Simplifying prog options: 0s Extracting C: 1m3.706294784s Simplifying C: 7m20.426128475s extracting reproducer from 29 programs first checking the prog from the crash report single: executing 1 programs separately with timeout 30s testing program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-write-close-openat-write-close detailed listing: executing program 0: mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./nfsd\x00', 0x1ff) mount(0x0, &(0x7f0000000000)='./nfsd\x00', &(0x7f0000000040)='nfsd\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000100)='./nfsd/portlist\x00', 0x2, 0x0) write(r0, &(0x7f0000000140)='2049\n', 0x5) close(r0) r1 = openat(0xffffffffffffff9c, &(0x7f0000000180)='./nfsd/threads\x00', 0x2, 0x0) write(r1, &(0x7f00000001c0)='4\n', 0x2) close(r1) program did not crash single: failed to extract reproducer bisect: bisecting 29 programs with base timeout 30s testing program (duration=37s, {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}}): [13, 3, 11, 6, 3, 3, 1, 19, 6, 15, 3, 11, 4, 3, 4, 10, 13, 3, 3, 14, 7, 6, 3, 4, 6, 18, 12, 1, 8] detailed listing: executing program 1: mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./proc\x00', 0x1ff) mount(0x0, &(0x7f0000000000)='./proc\x00', &(0x7f0000000100)='proc\x00', 0x0, 0x0) mkdirat(0xffffffffffffff9c, &(0x7f0000000200)='./nfsd\x00', 0x1ff) mount(0x0, &(0x7f0000000200)='./nfsd\x00', &(0x7f0000000300)='nfsd\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000400)='./nfsd/portlist\x00', 0x2, 0x0) write(r0, &(0x7f0000000500)='tcp 2049\n', 0x9) close(r0) r1 = openat(0xffffffffffffff9c, &(0x7f0000000600)='./nfsd/threads\x00', 0x2, 0x0) write(r1, &(0x7f0000000700)='1\n', 0x2) close(r1) write(0xffffffffffffffff, &(0x7f0000000900)='nfsd 127.0.0.1 2147483647 localhost\n', 0x24) r2 = openat(0xffffffffffffff9c, &(0x7f0000000c00)='./proc/net/rpc/nfsd.export/channel\x00', 0x2, 0x0) write(r2, &(0x7f0000000d00)='localhost / 2147483647 8195 0 0 0\n', 0x22) executing program 0: mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./sys\x00', 0x1ff) mount(0x0, &(0x7f0000000000)='./sys\x00', &(0x7f0000000040)='sysfs\x00', 0x0, 0x0) openat(0xffffffffffffff9c, &(0x7f0000000100)='./sys/bus/i2c/drivers/maxtcpc/uevent\x00', 0x1, 0x0) executing program 1: mkdirat(0xffffffffffffff9c, &(0x7f0000000400)='./sys\x00', 0x1ff) mount(0x0, &(0x7f0000000400)='./sys\x00', &(0x7f0000000500)='sysfs\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000600)='./sys/module/block2mtd/parameters/block2mtd\x00', 0x1, 0x0) write(r0, &(0x7f0000000700)='/dev/ram0,65536\n', 0x10) close(r0) r1 = syz_open_dev$mtd(&(0x7f0000000800), 0x1, 0x2) ioctl$MEMERASE(r1, 0x40084d02, &(0x7f0000000900)={0x0, 0x400000}) close(r1) r2 = openat$ubi_ctrl(0xffffffffffffff9c, &(0x7f0000000a00), 0x2, 0x0) ioctl(r2, 0x40186f40, &(0x7f0000000b00)="ffffffff0100"/24) close(r2) executing program 2: mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./proc\x00', 0x1ff) mount(&(0x7f0000000040)=@filename='none\x00', &(0x7f0000000000)='./proc\x00', &(0x7f0000000080)='proc\x00', 0x0, 0x0) mkdirat(0xffffffffffffff9c, &(0x7f0000000100)='./nfsd\x00', 0x1ff) mount(&(0x7f0000000040)=@filename='none\x00', &(0x7f0000000100)='./nfsd\x00', &(0x7f0000000140)='nfsd\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000280)='./proc/net/rpc/auth.unix.ip/channel\x00', 0x2, 0x0) write(r0, &(0x7f00000002c0)='nfsd 127.0.0.1 2147483647 localhost\n', 0x24) executing program 3: mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./sys\x00', 0x1ff) mount(0x0, &(0x7f0000000080)='./sys\x00', &(0x7f00000000c0)='sysfs\x00', 0x0, 0x0) openat(0xffffffffffffff9c, &(0x7f0000000400)='./sys/bus/sdio\x00', 0x0, 0x0) executing program 0: r0 = openat$uhid(0xffffffffffffff9c, &(0x7f0000000000), 0x802, 0x0) write$UHID_CREATE2(r0, &(0x7f0000001000)={0xb, {'syz0\x00', 'syz0\x00', 'syz0\x00', 0x1d, 0x5, 0x57e, 0x306, 0x3, 0xfffffffc, "05010905a10105091901290a150025017501950a8102950175068103c0"}}, 0x135) write$UHID_INPUT2(r0, 0x0, 0xc) executing program 3: syz_mount_image$ubifs(&(0x7f0000000000), &(0x7f0000000100)='./file0\x00', 0x0, &(0x7f0000000200), 0x1, 0x10000, &(0x7f0000000300)="$eJwBAAD//wAAAAE=") executing program 2: mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./proc\x00', 0x1ff) mount(0x0, &(0x7f0000000000)='./proc\x00', &(0x7f0000000100)='proc\x00', 0x0, 0x0) mkdirat(0xffffffffffffff9c, &(0x7f0000000200)='./nfsd\x00', 0x1ff) mount(0x0, &(0x7f0000000200)='./nfsd\x00', &(0x7f0000000300)='nfsd\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000400)='./nfsd/portlist\x00', 0x2, 0x0) write(r0, &(0x7f0000000500)='tcp 2049\n', 0x9) close(r0) r1 = openat(0xffffffffffffff9c, &(0x7f0000000600)='./nfsd/threads\x00', 0x2, 0x0) write(r1, &(0x7f0000000700)='1\n', 0x2) close(r1) r2 = openat(0xffffffffffffff9c, &(0x7f0000000800)='./proc/net/rpc/auth.unix.ip/channel\x00', 0x2, 0x0) write(r2, &(0x7f0000000900)='nfsd 127.0.0.1 2147483647 localhost\n', 0x24) close(r2) r3 = openat(0xffffffffffffff9c, &(0x7f0000000a00)='./proc/net/rpc/nfsd.fh/channel\x00', 0x2, 0x0) write(r3, &(0x7f0000000b00)='localhost 1 \\x00000000 2147483647 /\n', 0x24) close(r3) openat(0xffffffffffffff9c, &(0x7f0000000c00)='./proc/net/rpc/nfsd.export/channel\x00', 0x2, 0x0) mkdirat(0xffffffffffffff9c, &(0x7f0000000e00)='./mnt\x00', 0x1ff) mount$nfs4(&(0x7f0000000f00)='127.0.0.1:/\x00', &(0x7f0000000e00)='./mnt\x00', &(0x7f0000001000), 0x0, &(0x7f0000001100)=ANY=[@ANYBLOB='addr=127.0.0.1,port=2049,proto=tcp,vers=4.0,noresvport']) executing program 0: mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./sys\x00', 0x1ff) mount(0x0, &(0x7f0000000040)='./sys\x00', &(0x7f0000000080)='sysfs\x00', 0x0, 0x0) r0 = syz_init_net_socket$nl_rdma(0x10, 0x3, 0x10) sendmsg$RDMA_NLDEV_CMD_NEWLINK(r0, &(0x7f00000005c0)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x8}, 0xc, &(0x7f0000000580)={&(0x7f00000004c0)=ANY=[@ANYBLOB="380000000314010000000000000000000900020073797a30000000000800410072786500140033006574683000"/56], 0x38}}, 0x0) nanosleep(&(0x7f0000000300)={0x0, 0x5f5e100}, 0x0) openat(0xffffffffffffff9c, &(0x7f0000000200)='./sys/class/infiniband/syz0\x00', 0x0, 0x0) executing program 3: mkdirat(0xffffffffffffff9c, &(0x7f0000000040)='./dev\x00', 0x1ff) mount(0x0, &(0x7f0000000080)='./dev\x00', &(0x7f00000000c0)='devtmpfs\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000100)='./file0\x00', 0x42, 0x1b6) ftruncate(r0, 0x1000000) ioctl$LOOP_SET_FD(0xffffffffffffffff, 0x4c00, r0) r1 = openat(0xffffffffffffff9c, &(0x7f0000000180)='./file1\x00', 0x42, 0x1b6) ftruncate(r1, 0x1000000) r2 = syz_open_dev$loop(&(0x7f0000000140), 0x1, 0x2) ioctl$LOOP_SET_FD(r2, 0x4c00, r1) r3 = openat(0xffffffffffffff9c, &(0x7f00000001c0)='./file2\x00', 0x42, 0x1b6) ftruncate(r3, 0x1000000) r4 = syz_open_dev$loop(&(0x7f0000000140), 0x2, 0x2) ioctl$LOOP_SET_FD(r4, 0x4c00, r3) r5 = openat(0xffffffffffffff9c, &(0x7f0000000200)='./dev/mapper/control\x00', 0x2, 0x0) ioctl(r5, 0xc138fd0a, &(0x7f0000000300)="0400000000000000000000003801000038010000000000000000000000000000000000000000000000000000000000006364657600") executing program 1: mkdirat(0xffffffffffffff9c, &(0x7f0000000080)='./sys\x00', 0x1ff) mount(&(0x7f0000000000), &(0x7f0000000080)='./sys\x00', &(0x7f0000000100)='sysfs\x00', 0x0, 0x0) openat(0xffffffffffffff9c, &(0x7f0000000180)='./sys/bus/pci/drivers/mei_me\x00', 0x0, 0x0) executing program 1: r0 = openat$tun(0xffffffffffffff9c, &(0x7f0000000240), 0x0, 0x0) ioctl$TUNSETIFF(r0, 0x400454ca, &(0x7f0000000040)={'syzkaller0\x00', 0x7101}) r1 = openat$tun(0xffffffffffffff9c, &(0x7f0000000400), 0x0, 0x0) close(r1) r2 = socket$nl_route(0x10, 0x3, 0x0) ioctl$sock_SIOCGIFINDEX(r2, 0x8933, &(0x7f0000000100)={'syzkaller0\x00', 0x0}) sendmsg$nl_route_sched(r2, &(0x7f0000000000)={0x0, 0x0, &(0x7f0000000580)={0x0}, 0x1, 0x0, 0x0, 0x40088c1}, 0x0) sendmsg$nl_route_sched(r2, &(0x7f00000003c0)={0x0, 0x0, &(0x7f0000000080)={&(0x7f0000000a40)=@newqdisc={0x3c, 0x24, 0x4ee4e6a52ff56541, 0x70b926, 0x25dbdc01, {0x0, 0x0, 0x0, r3, {0x0, 0x10}, {0x1, 0xb}, {0xffff, 0xffe0}}, [@qdisc_kind_options=@q_plug={{0x9}, {0xc, 0x2, {0x2, 0x2}}}]}, 0x3c}, 0x1, 0x0, 0x0, 0x240448a4}, 0x4) ioctl$SIOCSIFHWADDR(r1, 0x8914, &(0x7f0000002280)={'syzkaller0\x00', @multicast}) r4 = socket$packet(0x11, 0x2, 0x300) sendto$packet(r4, &(0x7f00000009c0)='\x00', 0x1, 0x40000, &(0x7f0000000340)={0x11, 0x10, r3, 0x1, 0x2, 0x6, @remote}, 0x14) executing program 3: mkdirat(0xffffffffffffff9c, &(0x7f0000000180)='./dev\x00', 0x1ff) mount(0x0, &(0x7f0000000180)='./dev\x00', &(0x7f00000001c0)='devtmpfs\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000200)='./dev/ram0\x00', 0x2, 0x0) lseek(r0, 0x0, 0x2) executing program 3: mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./sys\x00', 0x1ff) mount(0x0, &(0x7f0000000000)='./sys\x00', &(0x7f0000000040)='sysfs\x00', 0x0, 0x0) openat(0xffffffffffffff9c, &(0x7f0000000080)='./sys/module/acpi_configfs\x00', 0x0, 0x0) executing program 0: mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./sys\x00', 0x1ff) mount(0x0, &(0x7f0000000040)='./sys\x00', &(0x7f0000000080)='sysfs\x00', 0x0, 0x0) openat(0xffffffffffffff9c, &(0x7f0000000100)='./file0\x00', 0x1, 0x0) openat(0xffffffffffffff9c, &(0x7f0000000140)='./sys/bus/hid/drivers/kone/module\x00', 0x0, 0x0) executing program 3: r0 = openat$tun(0xffffffffffffff9c, &(0x7f0000000240), 0x0, 0x0) ioctl$TUNSETIFF(r0, 0x400454ca, &(0x7f0000000040)={'syzkaller0\x00', 0x7101}) r1 = socket$kcm(0x11, 0x3, 0x0) r2 = openat$tun(0xffffffffffffff9c, &(0x7f0000000400), 0x0, 0x0) close(r2) r3 = socket(0x400000000010, 0x2, 0x0) ioctl$sock_SIOCGIFINDEX(r3, 0x8933, &(0x7f0000000100)={'syzkaller0\x00', 0x0}) sendmsg$nl_route_sched(r3, &(0x7f00000012c0)={0x0, 0x0, &(0x7f0000000000)={0x0}}, 0x0) ioctl$SIOCSIFHWADDR(r2, 0x8914, &(0x7f0000002280)={'syzkaller0\x00', @multicast}) sendmsg$kcm(r1, &(0x7f00000000c0)={&(0x7f0000000280)=@xdp={0x2c, 0x7, r4, 0x3e}, 0x80, &(0x7f0000000200)=[{&(0x7f0000000340)='t', 0x1}], 0x1}, 0x5) executing program 0: mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./proc\x00', 0x1ff) mount(0x0, &(0x7f0000000000)='./proc\x00', &(0x7f0000000100)='proc\x00', 0x0, 0x0) mkdirat(0xffffffffffffff9c, &(0x7f0000000200)='./nfsd\x00', 0x1ff) mount(0x0, &(0x7f0000000200)='./nfsd\x00', &(0x7f0000000300)='nfsd\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000400)='./nfsd/portlist\x00', 0x2, 0x0) write(r0, &(0x7f0000000500)='tcp 2049\n', 0x9) close(r0) r1 = openat(0xffffffffffffff9c, &(0x7f0000000600)='./nfsd/threads\x00', 0x2, 0x0) write(r1, &(0x7f0000000700)='1\n', 0x2) r2 = openat(0xffffffffffffff9c, &(0x7f0000000800)='./proc/net/rpc/auth.unix.ip/channel\x00', 0x2, 0x0) write(r2, &(0x7f0000000900)='nfsd 127.0.0.1 2147483647 localhost\n', 0x24) r3 = openat(0xffffffffffffff9c, &(0x7f0000000c00)='./proc/net/rpc/nfsd.export/channel\x00', 0x2, 0x0) write(r3, &(0x7f0000000d00)='localhost / 2147483647 8195 0 0 0\n', 0x22) executing program 2: mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./sys\x00', 0x1ff) mount(0x0, &(0x7f0000000080)='./sys\x00', &(0x7f00000000c0)='sysfs\x00', 0x0, 0x0) openat(0xffffffffffffff9c, &(0x7f0000000100)='./sys/devices/platform/alarmtimer\x00', 0x0, 0x0) executing program 0: r0 = openat$uhid(0xffffffffffffff9c, &(0x7f0000000000), 0x802, 0x0) write$UHID_CREATE2(r0, &(0x7f0000001000)={0xb, {'syz0\x00', 'syz0\x00', 'syz0\x00', 0x1d, 0x5, 0x57e, 0x306, 0x3, 0xfffffffc, "05010905a10105091901290a150025017501950a8102950175068103c0"}}, 0x135) write$UHID_INPUT2(r0, 0x0, 0xc) executing program 2: mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./sys\x00', 0x1ff) mount(0x0, &(0x7f0000000000)='./sys\x00', &(0x7f0000000040)='sysfs\x00', 0x0, 0x0) mkdirat(0xffffffffffffff9c, &(0x7f0000000080)='./debug\x00', 0x1ff) mount(0x0, &(0x7f0000000080)='./debug\x00', &(0x7f00000000c0)='debugfs\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000100)='./sys/bus/platform/devices/pcspkr\x00', 0x0, 0x0) r1 = openat(r0, &(0x7f0000000200)='driver_override\x00', 0x2, 0x0) write(r1, &(0x7f0000000300)='dwc3\x00', 0x5) close(r1) close(r0) r2 = openat(0xffffffffffffff9c, &(0x7f0000000400)='./sys/bus/platform/drivers/dwc3\x00', 0x0, 0x0) r3 = openat(r2, &(0x7f0000000500)='bind\x00', 0x2, 0x0) write(r3, &(0x7f0000000600)='pcspkr\x00', 0x7) close(r3) close(r2) executing program 2: mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./sys\x00', 0x1ff) mount(&(0x7f0000000040)=@filename='sysfs\x00', &(0x7f0000000080)='./sys\x00', &(0x7f00000000c0)='sysfs\x00', 0x0, 0x0) openat(0xffffffffffffff9c, &(0x7f0000000100)='./sys/bus/pci/drivers/ata_piix/0000:00:01.1\x00', 0x0, 0x0) openat(0xffffffffffffff9c, &(0x7f0000000200)='./sys/bus/pci/drivers/ata_piix/0000:00:1f.2\x00', 0x0, 0x0) openat(0xffffffffffffff9c, &(0x7f0000000300)='./sys/bus/pci/drivers/ahci/0000:00:1f.2\x00', 0x0, 0x0) openat(0xffffffffffffff9c, &(0x7f0000000400)='./sys/class/ata_port/ata1\x00', 0x0, 0x0) openat(0xffffffffffffff9c, &(0x7f0000000500)='./sys/class/ata_port/ata2\x00', 0x0, 0x0) executing program 2: mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./sys\x00', 0x1ff) mount(0x0, &(0x7f0000000040)='./sys\x00', &(0x7f0000000080)='sysfs\x00', 0x0, 0x0) r0 = socket$inet(0x2, 0x1, 0x0) ioctl$sock_SIOCBRADDBR(r0, 0x89a0, &(0x7f0000000100)) r1 = openat(0xffffffffffffff9c, &(0x7f0000000200)='./sys/class/net/bridge1/bridge/vlan_stats_enabled\x00', 0x0, 0x0) read(r1, &(0x7f0000000300)=""/100, 0x64) executing program 4: mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./sys\x00', 0x1ff) mount(0x0, &(0x7f0000000040)='./sys\x00', &(0x7f0000000080)='sysfs\x00', 0x0, 0x0) openat$dir(0xffffffffffffff9c, &(0x7f0000000100)='./sys/devices/system/cpu/cpu0\x00', 0x10000, 0x0) executing program 4: mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./sys\x00', 0x1ff) mount(0x0, &(0x7f0000000000)='./sys\x00', &(0x7f0000000100)='sysfs\x00', 0x0, 0x0) r0 = openat$dir(0xffffffffffffff9c, &(0x7f0000000200)='./sys/bus/pci/drivers/hpsa\x00', 0x0, 0x0) getdents64(r0, &(0x7f0000000300)=""/1024, 0x400) executing program 4: mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./sys\x00', 0x1ff) mount(0x0, &(0x7f0000000080)='./sys\x00', &(0x7f00000000c0)='sysfs\x00', 0x0, 0x0) openat(0xffffffffffffff9c, &(0x7f0000000100)='./sys/module/ath11k_core\x00', 0x0, 0x0) openat(0xffffffffffffff9c, &(0x7f0000000200)='./sys/module/ath11k_ahb\x00', 0x0, 0x0) openat(0xffffffffffffff9c, &(0x7f0000000300)='./sys/module/ath11k_pci\x00', 0x0, 0x0) openat(0xffffffffffffff9c, &(0x7f0000000400)='./sys/module/ath11k\x00', 0x0, 0x0) executing program 4: mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./proc\x00', 0x1ff) mount(0x0, &(0x7f0000000000)='./proc\x00', &(0x7f0000000100)='proc\x00', 0x0, 0x0) mkdirat(0xffffffffffffff9c, &(0x7f0000000200)='./nfsd\x00', 0x1ff) mount(0x0, &(0x7f0000000200)='./nfsd\x00', &(0x7f0000000300)='nfsd\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000400)='./nfsd/portlist\x00', 0x2, 0x0) write(r0, &(0x7f0000000500)='tcp 2049\n', 0x9) close(r0) r1 = openat(0xffffffffffffff9c, &(0x7f0000000600)='./nfsd/threads\x00', 0x2, 0x0) write(r1, &(0x7f0000000700)='1\n', 0x2) close(r1) r2 = openat(0xffffffffffffff9c, &(0x7f0000000800)='./proc/net/rpc/auth.unix.ip/channel\x00', 0x2, 0x0) write(r2, &(0x7f0000000900)='nfsd 127.0.0.1 2147483647 localhost\n', 0x24) close(r2) r3 = openat(0xffffffffffffff9c, &(0x7f0000000a00)='./proc/net/rpc/nfsd.fh/channel\x00', 0x2, 0x0) write(r3, &(0x7f0000000b00)='localhost 1 \\x00000000 2147483647 /\n', 0x24) close(r3) mkdirat(0xffffffffffffff9c, &(0x7f0000000e00)='./mnt\x00', 0x1ff) mount$nfs4(&(0x7f0000000f00)='127.0.0.1:/\x00', &(0x7f0000000e00)='./mnt\x00', &(0x7f0000001000), 0x0, &(0x7f0000001100)=ANY=[@ANYBLOB='addr=127.0.0.1,port=2049,proto=tcp,vers=4.0,noresvport']) executing program 4: mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./proc\x00', 0x1ff) mount(0x0, &(0x7f0000000000)='./proc\x00', &(0x7f0000000100)='proc\x00', 0x0, 0x0) mkdirat(0xffffffffffffff9c, &(0x7f0000000200)='./nfsd\x00', 0x1ff) mount(0x0, &(0x7f0000000200)='./nfsd\x00', &(0x7f0000000300)='nfsd\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000400)='./nfsd/portlist\x00', 0x2, 0x0) write(r0, &(0x7f0000000500)='tcp 2049\n', 0x9) close(r0) openat(0xffffffffffffff9c, &(0x7f0000000600)='./nfsd/threads\x00', 0x2, 0x0) r1 = openat(0xffffffffffffff9c, &(0x7f0000000800)='./proc/net/rpc/auth.unix.ip/channel\x00', 0x2, 0x0) write(r1, &(0x7f0000000900)='nfsd 127.0.0.1 2147483647 localhost\n', 0x24) r2 = openat(0xffffffffffffff9c, &(0x7f0000000c00)='./proc/net/rpc/nfsd.export/channel\x00', 0x2, 0x0) write(r2, &(0x7f0000000d00)='localhost / 2147483647 8195 0 0 0\n', 0x22) executing program 4: nanosleep(&(0x7f0000000300)={0x0, 0x1000000}, 0x0) executing program 4: mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./nfsd\x00', 0x1ff) mount(0x0, &(0x7f0000000000)='./nfsd\x00', &(0x7f0000000040)='nfsd\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000100)='./nfsd/portlist\x00', 0x2, 0x0) write(r0, &(0x7f0000000140)='2049\n', 0x5) close(r0) r1 = openat(0xffffffffffffff9c, &(0x7f0000000180)='./nfsd/threads\x00', 0x2, 0x0) write(r1, &(0x7f00000001c0)='4\n', 0x2) close(r1) program crashed: KASAN: use-after-free Write in nfsd_create_serv bisect: bisecting 29 programs bisect: split chunks (needed=false): <28> bisect: split chunk #0 of len 28 into 3 parts bisect: testing without sub-chunk 1/3 testing program (duration=34s, {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}}): [3, 11, 4, 3, 4, 10, 13, 3, 3, 14, 7, 6, 3, 4, 6, 18, 12, 1, 8] detailed listing: executing program 1: mkdirat(0xffffffffffffff9c, &(0x7f0000000080)='./sys\x00', 0x1ff) mount(&(0x7f0000000000), &(0x7f0000000080)='./sys\x00', &(0x7f0000000100)='sysfs\x00', 0x0, 0x0) openat(0xffffffffffffff9c, &(0x7f0000000180)='./sys/bus/pci/drivers/mei_me\x00', 0x0, 0x0) executing program 1: r0 = openat$tun(0xffffffffffffff9c, &(0x7f0000000240), 0x0, 0x0) ioctl$TUNSETIFF(r0, 0x400454ca, &(0x7f0000000040)={'syzkaller0\x00', 0x7101}) r1 = openat$tun(0xffffffffffffff9c, &(0x7f0000000400), 0x0, 0x0) close(r1) r2 = socket$nl_route(0x10, 0x3, 0x0) ioctl$sock_SIOCGIFINDEX(r2, 0x8933, &(0x7f0000000100)={'syzkaller0\x00', 0x0}) sendmsg$nl_route_sched(r2, &(0x7f0000000000)={0x0, 0x0, &(0x7f0000000580)={0x0}, 0x1, 0x0, 0x0, 0x40088c1}, 0x0) sendmsg$nl_route_sched(r2, &(0x7f00000003c0)={0x0, 0x0, &(0x7f0000000080)={&(0x7f0000000a40)=@newqdisc={0x3c, 0x24, 0x4ee4e6a52ff56541, 0x70b926, 0x25dbdc01, {0x0, 0x0, 0x0, r3, {0x0, 0x10}, {0x1, 0xb}, {0xffff, 0xffe0}}, [@qdisc_kind_options=@q_plug={{0x9}, {0xc, 0x2, {0x2, 0x2}}}]}, 0x3c}, 0x1, 0x0, 0x0, 0x240448a4}, 0x4) ioctl$SIOCSIFHWADDR(r1, 0x8914, &(0x7f0000002280)={'syzkaller0\x00', @multicast}) r4 = socket$packet(0x11, 0x2, 0x300) sendto$packet(r4, &(0x7f00000009c0)='\x00', 0x1, 0x40000, &(0x7f0000000340)={0x11, 0x10, r3, 0x1, 0x2, 0x6, @remote}, 0x14) executing program 3: mkdirat(0xffffffffffffff9c, &(0x7f0000000180)='./dev\x00', 0x1ff) mount(0x0, &(0x7f0000000180)='./dev\x00', &(0x7f00000001c0)='devtmpfs\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000200)='./dev/ram0\x00', 0x2, 0x0) lseek(r0, 0x0, 0x2) executing program 3: mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./sys\x00', 0x1ff) mount(0x0, &(0x7f0000000000)='./sys\x00', &(0x7f0000000040)='sysfs\x00', 0x0, 0x0) openat(0xffffffffffffff9c, &(0x7f0000000080)='./sys/module/acpi_configfs\x00', 0x0, 0x0) executing program 0: mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./sys\x00', 0x1ff) mount(0x0, &(0x7f0000000040)='./sys\x00', &(0x7f0000000080)='sysfs\x00', 0x0, 0x0) openat(0xffffffffffffff9c, &(0x7f0000000100)='./file0\x00', 0x1, 0x0) openat(0xffffffffffffff9c, &(0x7f0000000140)='./sys/bus/hid/drivers/kone/module\x00', 0x0, 0x0) executing program 3: r0 = openat$tun(0xffffffffffffff9c, &(0x7f0000000240), 0x0, 0x0) ioctl$TUNSETIFF(r0, 0x400454ca, &(0x7f0000000040)={'syzkaller0\x00', 0x7101}) r1 = socket$kcm(0x11, 0x3, 0x0) r2 = openat$tun(0xffffffffffffff9c, &(0x7f0000000400), 0x0, 0x0) close(r2) r3 = socket(0x400000000010, 0x2, 0x0) ioctl$sock_SIOCGIFINDEX(r3, 0x8933, &(0x7f0000000100)={'syzkaller0\x00', 0x0}) sendmsg$nl_route_sched(r3, &(0x7f00000012c0)={0x0, 0x0, &(0x7f0000000000)={0x0}}, 0x0) ioctl$SIOCSIFHWADDR(r2, 0x8914, &(0x7f0000002280)={'syzkaller0\x00', @multicast}) sendmsg$kcm(r1, &(0x7f00000000c0)={&(0x7f0000000280)=@xdp={0x2c, 0x7, r4, 0x3e}, 0x80, &(0x7f0000000200)=[{&(0x7f0000000340)='t', 0x1}], 0x1}, 0x5) executing program 0: mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./proc\x00', 0x1ff) mount(0x0, &(0x7f0000000000)='./proc\x00', &(0x7f0000000100)='proc\x00', 0x0, 0x0) mkdirat(0xffffffffffffff9c, &(0x7f0000000200)='./nfsd\x00', 0x1ff) mount(0x0, &(0x7f0000000200)='./nfsd\x00', &(0x7f0000000300)='nfsd\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000400)='./nfsd/portlist\x00', 0x2, 0x0) write(r0, &(0x7f0000000500)='tcp 2049\n', 0x9) close(r0) r1 = openat(0xffffffffffffff9c, &(0x7f0000000600)='./nfsd/threads\x00', 0x2, 0x0) write(r1, &(0x7f0000000700)='1\n', 0x2) r2 = openat(0xffffffffffffff9c, &(0x7f0000000800)='./proc/net/rpc/auth.unix.ip/channel\x00', 0x2, 0x0) write(r2, &(0x7f0000000900)='nfsd 127.0.0.1 2147483647 localhost\n', 0x24) r3 = openat(0xffffffffffffff9c, &(0x7f0000000c00)='./proc/net/rpc/nfsd.export/channel\x00', 0x2, 0x0) write(r3, &(0x7f0000000d00)='localhost / 2147483647 8195 0 0 0\n', 0x22) executing program 2: mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./sys\x00', 0x1ff) mount(0x0, &(0x7f0000000080)='./sys\x00', &(0x7f00000000c0)='sysfs\x00', 0x0, 0x0) openat(0xffffffffffffff9c, &(0x7f0000000100)='./sys/devices/platform/alarmtimer\x00', 0x0, 0x0) executing program 0: r0 = openat$uhid(0xffffffffffffff9c, &(0x7f0000000000), 0x802, 0x0) write$UHID_CREATE2(r0, &(0x7f0000001000)={0xb, {'syz0\x00', 'syz0\x00', 'syz0\x00', 0x1d, 0x5, 0x57e, 0x306, 0x3, 0xfffffffc, "05010905a10105091901290a150025017501950a8102950175068103c0"}}, 0x135) write$UHID_INPUT2(r0, 0x0, 0xc) executing program 2: mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./sys\x00', 0x1ff) mount(0x0, &(0x7f0000000000)='./sys\x00', &(0x7f0000000040)='sysfs\x00', 0x0, 0x0) mkdirat(0xffffffffffffff9c, &(0x7f0000000080)='./debug\x00', 0x1ff) mount(0x0, &(0x7f0000000080)='./debug\x00', &(0x7f00000000c0)='debugfs\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000100)='./sys/bus/platform/devices/pcspkr\x00', 0x0, 0x0) r1 = openat(r0, &(0x7f0000000200)='driver_override\x00', 0x2, 0x0) write(r1, &(0x7f0000000300)='dwc3\x00', 0x5) close(r1) close(r0) r2 = openat(0xffffffffffffff9c, &(0x7f0000000400)='./sys/bus/platform/drivers/dwc3\x00', 0x0, 0x0) r3 = openat(r2, &(0x7f0000000500)='bind\x00', 0x2, 0x0) write(r3, &(0x7f0000000600)='pcspkr\x00', 0x7) close(r3) close(r2) executing program 2: mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./sys\x00', 0x1ff) mount(&(0x7f0000000040)=@filename='sysfs\x00', &(0x7f0000000080)='./sys\x00', &(0x7f00000000c0)='sysfs\x00', 0x0, 0x0) openat(0xffffffffffffff9c, &(0x7f0000000100)='./sys/bus/pci/drivers/ata_piix/0000:00:01.1\x00', 0x0, 0x0) openat(0xffffffffffffff9c, &(0x7f0000000200)='./sys/bus/pci/drivers/ata_piix/0000:00:1f.2\x00', 0x0, 0x0) openat(0xffffffffffffff9c, &(0x7f0000000300)='./sys/bus/pci/drivers/ahci/0000:00:1f.2\x00', 0x0, 0x0) openat(0xffffffffffffff9c, &(0x7f0000000400)='./sys/class/ata_port/ata1\x00', 0x0, 0x0) openat(0xffffffffffffff9c, &(0x7f0000000500)='./sys/class/ata_port/ata2\x00', 0x0, 0x0) executing program 2: mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./sys\x00', 0x1ff) mount(0x0, &(0x7f0000000040)='./sys\x00', &(0x7f0000000080)='sysfs\x00', 0x0, 0x0) r0 = socket$inet(0x2, 0x1, 0x0) ioctl$sock_SIOCBRADDBR(r0, 0x89a0, &(0x7f0000000100)) r1 = openat(0xffffffffffffff9c, &(0x7f0000000200)='./sys/class/net/bridge1/bridge/vlan_stats_enabled\x00', 0x0, 0x0) read(r1, &(0x7f0000000300)=""/100, 0x64) executing program 4: mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./sys\x00', 0x1ff) mount(0x0, &(0x7f0000000040)='./sys\x00', &(0x7f0000000080)='sysfs\x00', 0x0, 0x0) openat$dir(0xffffffffffffff9c, &(0x7f0000000100)='./sys/devices/system/cpu/cpu0\x00', 0x10000, 0x0) executing program 4: mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./sys\x00', 0x1ff) mount(0x0, &(0x7f0000000000)='./sys\x00', &(0x7f0000000100)='sysfs\x00', 0x0, 0x0) r0 = openat$dir(0xffffffffffffff9c, &(0x7f0000000200)='./sys/bus/pci/drivers/hpsa\x00', 0x0, 0x0) getdents64(r0, &(0x7f0000000300)=""/1024, 0x400) executing program 4: mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./sys\x00', 0x1ff) mount(0x0, &(0x7f0000000080)='./sys\x00', &(0x7f00000000c0)='sysfs\x00', 0x0, 0x0) openat(0xffffffffffffff9c, &(0x7f0000000100)='./sys/module/ath11k_core\x00', 0x0, 0x0) openat(0xffffffffffffff9c, &(0x7f0000000200)='./sys/module/ath11k_ahb\x00', 0x0, 0x0) openat(0xffffffffffffff9c, &(0x7f0000000300)='./sys/module/ath11k_pci\x00', 0x0, 0x0) openat(0xffffffffffffff9c, &(0x7f0000000400)='./sys/module/ath11k\x00', 0x0, 0x0) executing program 4: mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./proc\x00', 0x1ff) mount(0x0, &(0x7f0000000000)='./proc\x00', &(0x7f0000000100)='proc\x00', 0x0, 0x0) mkdirat(0xffffffffffffff9c, &(0x7f0000000200)='./nfsd\x00', 0x1ff) mount(0x0, &(0x7f0000000200)='./nfsd\x00', &(0x7f0000000300)='nfsd\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000400)='./nfsd/portlist\x00', 0x2, 0x0) write(r0, &(0x7f0000000500)='tcp 2049\n', 0x9) close(r0) r1 = openat(0xffffffffffffff9c, &(0x7f0000000600)='./nfsd/threads\x00', 0x2, 0x0) write(r1, &(0x7f0000000700)='1\n', 0x2) close(r1) r2 = openat(0xffffffffffffff9c, &(0x7f0000000800)='./proc/net/rpc/auth.unix.ip/channel\x00', 0x2, 0x0) write(r2, &(0x7f0000000900)='nfsd 127.0.0.1 2147483647 localhost\n', 0x24) close(r2) r3 = openat(0xffffffffffffff9c, &(0x7f0000000a00)='./proc/net/rpc/nfsd.fh/channel\x00', 0x2, 0x0) write(r3, &(0x7f0000000b00)='localhost 1 \\x00000000 2147483647 /\n', 0x24) close(r3) mkdirat(0xffffffffffffff9c, &(0x7f0000000e00)='./mnt\x00', 0x1ff) mount$nfs4(&(0x7f0000000f00)='127.0.0.1:/\x00', &(0x7f0000000e00)='./mnt\x00', &(0x7f0000001000), 0x0, &(0x7f0000001100)=ANY=[@ANYBLOB='addr=127.0.0.1,port=2049,proto=tcp,vers=4.0,noresvport']) executing program 4: mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./proc\x00', 0x1ff) mount(0x0, &(0x7f0000000000)='./proc\x00', &(0x7f0000000100)='proc\x00', 0x0, 0x0) mkdirat(0xffffffffffffff9c, &(0x7f0000000200)='./nfsd\x00', 0x1ff) mount(0x0, &(0x7f0000000200)='./nfsd\x00', &(0x7f0000000300)='nfsd\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000400)='./nfsd/portlist\x00', 0x2, 0x0) write(r0, &(0x7f0000000500)='tcp 2049\n', 0x9) close(r0) openat(0xffffffffffffff9c, &(0x7f0000000600)='./nfsd/threads\x00', 0x2, 0x0) r1 = openat(0xffffffffffffff9c, &(0x7f0000000800)='./proc/net/rpc/auth.unix.ip/channel\x00', 0x2, 0x0) write(r1, &(0x7f0000000900)='nfsd 127.0.0.1 2147483647 localhost\n', 0x24) r2 = openat(0xffffffffffffff9c, &(0x7f0000000c00)='./proc/net/rpc/nfsd.export/channel\x00', 0x2, 0x0) write(r2, &(0x7f0000000d00)='localhost / 2147483647 8195 0 0 0\n', 0x22) executing program 4: nanosleep(&(0x7f0000000300)={0x0, 0x1000000}, 0x0) executing program 4: mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./nfsd\x00', 0x1ff) mount(0x0, &(0x7f0000000000)='./nfsd\x00', &(0x7f0000000040)='nfsd\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000100)='./nfsd/portlist\x00', 0x2, 0x0) write(r0, &(0x7f0000000140)='2049\n', 0x5) close(r0) r1 = openat(0xffffffffffffff9c, &(0x7f0000000180)='./nfsd/threads\x00', 0x2, 0x0) write(r1, &(0x7f00000001c0)='4\n', 0x2) close(r1) program did not crash bisect: testing without sub-chunk 2/3 testing program (duration=34s, {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}}): [13, 3, 11, 6, 3, 3, 1, 19, 6, 15, 7, 6, 3, 4, 6, 18, 12, 1, 8] detailed listing: executing program 1: mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./proc\x00', 0x1ff) mount(0x0, &(0x7f0000000000)='./proc\x00', &(0x7f0000000100)='proc\x00', 0x0, 0x0) mkdirat(0xffffffffffffff9c, &(0x7f0000000200)='./nfsd\x00', 0x1ff) mount(0x0, &(0x7f0000000200)='./nfsd\x00', &(0x7f0000000300)='nfsd\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000400)='./nfsd/portlist\x00', 0x2, 0x0) write(r0, &(0x7f0000000500)='tcp 2049\n', 0x9) close(r0) r1 = openat(0xffffffffffffff9c, &(0x7f0000000600)='./nfsd/threads\x00', 0x2, 0x0) write(r1, &(0x7f0000000700)='1\n', 0x2) close(r1) write(0xffffffffffffffff, &(0x7f0000000900)='nfsd 127.0.0.1 2147483647 localhost\n', 0x24) r2 = openat(0xffffffffffffff9c, &(0x7f0000000c00)='./proc/net/rpc/nfsd.export/channel\x00', 0x2, 0x0) write(r2, &(0x7f0000000d00)='localhost / 2147483647 8195 0 0 0\n', 0x22) executing program 0: mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./sys\x00', 0x1ff) mount(0x0, &(0x7f0000000000)='./sys\x00', &(0x7f0000000040)='sysfs\x00', 0x0, 0x0) openat(0xffffffffffffff9c, &(0x7f0000000100)='./sys/bus/i2c/drivers/maxtcpc/uevent\x00', 0x1, 0x0) executing program 1: mkdirat(0xffffffffffffff9c, &(0x7f0000000400)='./sys\x00', 0x1ff) mount(0x0, &(0x7f0000000400)='./sys\x00', &(0x7f0000000500)='sysfs\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000600)='./sys/module/block2mtd/parameters/block2mtd\x00', 0x1, 0x0) write(r0, &(0x7f0000000700)='/dev/ram0,65536\n', 0x10) close(r0) r1 = syz_open_dev$mtd(&(0x7f0000000800), 0x1, 0x2) ioctl$MEMERASE(r1, 0x40084d02, &(0x7f0000000900)={0x0, 0x400000}) close(r1) r2 = openat$ubi_ctrl(0xffffffffffffff9c, &(0x7f0000000a00), 0x2, 0x0) ioctl(r2, 0x40186f40, &(0x7f0000000b00)="ffffffff0100"/24) close(r2) executing program 2: mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./proc\x00', 0x1ff) mount(&(0x7f0000000040)=@filename='none\x00', &(0x7f0000000000)='./proc\x00', &(0x7f0000000080)='proc\x00', 0x0, 0x0) mkdirat(0xffffffffffffff9c, &(0x7f0000000100)='./nfsd\x00', 0x1ff) mount(&(0x7f0000000040)=@filename='none\x00', &(0x7f0000000100)='./nfsd\x00', &(0x7f0000000140)='nfsd\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000280)='./proc/net/rpc/auth.unix.ip/channel\x00', 0x2, 0x0) write(r0, &(0x7f00000002c0)='nfsd 127.0.0.1 2147483647 localhost\n', 0x24) executing program 3: mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./sys\x00', 0x1ff) mount(0x0, &(0x7f0000000080)='./sys\x00', &(0x7f00000000c0)='sysfs\x00', 0x0, 0x0) openat(0xffffffffffffff9c, &(0x7f0000000400)='./sys/bus/sdio\x00', 0x0, 0x0) executing program 0: r0 = openat$uhid(0xffffffffffffff9c, &(0x7f0000000000), 0x802, 0x0) write$UHID_CREATE2(r0, &(0x7f0000001000)={0xb, {'syz0\x00', 'syz0\x00', 'syz0\x00', 0x1d, 0x5, 0x57e, 0x306, 0x3, 0xfffffffc, "05010905a10105091901290a150025017501950a8102950175068103c0"}}, 0x135) write$UHID_INPUT2(r0, 0x0, 0xc) executing program 3: syz_mount_image$ubifs(&(0x7f0000000000), &(0x7f0000000100)='./file0\x00', 0x0, &(0x7f0000000200), 0x1, 0x10000, &(0x7f0000000300)="$eJwBAAD//wAAAAE=") executing program 2: mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./proc\x00', 0x1ff) mount(0x0, &(0x7f0000000000)='./proc\x00', &(0x7f0000000100)='proc\x00', 0x0, 0x0) mkdirat(0xffffffffffffff9c, &(0x7f0000000200)='./nfsd\x00', 0x1ff) mount(0x0, &(0x7f0000000200)='./nfsd\x00', &(0x7f0000000300)='nfsd\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000400)='./nfsd/portlist\x00', 0x2, 0x0) write(r0, &(0x7f0000000500)='tcp 2049\n', 0x9) close(r0) r1 = openat(0xffffffffffffff9c, &(0x7f0000000600)='./nfsd/threads\x00', 0x2, 0x0) write(r1, &(0x7f0000000700)='1\n', 0x2) close(r1) r2 = openat(0xffffffffffffff9c, &(0x7f0000000800)='./proc/net/rpc/auth.unix.ip/channel\x00', 0x2, 0x0) write(r2, &(0x7f0000000900)='nfsd 127.0.0.1 2147483647 localhost\n', 0x24) close(r2) r3 = openat(0xffffffffffffff9c, &(0x7f0000000a00)='./proc/net/rpc/nfsd.fh/channel\x00', 0x2, 0x0) write(r3, &(0x7f0000000b00)='localhost 1 \\x00000000 2147483647 /\n', 0x24) close(r3) openat(0xffffffffffffff9c, &(0x7f0000000c00)='./proc/net/rpc/nfsd.export/channel\x00', 0x2, 0x0) mkdirat(0xffffffffffffff9c, &(0x7f0000000e00)='./mnt\x00', 0x1ff) mount$nfs4(&(0x7f0000000f00)='127.0.0.1:/\x00', &(0x7f0000000e00)='./mnt\x00', &(0x7f0000001000), 0x0, &(0x7f0000001100)=ANY=[@ANYBLOB='addr=127.0.0.1,port=2049,proto=tcp,vers=4.0,noresvport']) executing program 0: mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./sys\x00', 0x1ff) mount(0x0, &(0x7f0000000040)='./sys\x00', &(0x7f0000000080)='sysfs\x00', 0x0, 0x0) r0 = syz_init_net_socket$nl_rdma(0x10, 0x3, 0x10) sendmsg$RDMA_NLDEV_CMD_NEWLINK(r0, &(0x7f00000005c0)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x8}, 0xc, &(0x7f0000000580)={&(0x7f00000004c0)=ANY=[@ANYBLOB="380000000314010000000000000000000900020073797a30000000000800410072786500140033006574683000"/56], 0x38}}, 0x0) nanosleep(&(0x7f0000000300)={0x0, 0x5f5e100}, 0x0) openat(0xffffffffffffff9c, &(0x7f0000000200)='./sys/class/infiniband/syz0\x00', 0x0, 0x0) executing program 3: mkdirat(0xffffffffffffff9c, &(0x7f0000000040)='./dev\x00', 0x1ff) mount(0x0, &(0x7f0000000080)='./dev\x00', &(0x7f00000000c0)='devtmpfs\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000100)='./file0\x00', 0x42, 0x1b6) ftruncate(r0, 0x1000000) ioctl$LOOP_SET_FD(0xffffffffffffffff, 0x4c00, r0) r1 = openat(0xffffffffffffff9c, &(0x7f0000000180)='./file1\x00', 0x42, 0x1b6) ftruncate(r1, 0x1000000) r2 = syz_open_dev$loop(&(0x7f0000000140), 0x1, 0x2) ioctl$LOOP_SET_FD(r2, 0x4c00, r1) r3 = openat(0xffffffffffffff9c, &(0x7f00000001c0)='./file2\x00', 0x42, 0x1b6) ftruncate(r3, 0x1000000) r4 = syz_open_dev$loop(&(0x7f0000000140), 0x2, 0x2) ioctl$LOOP_SET_FD(r4, 0x4c00, r3) r5 = openat(0xffffffffffffff9c, &(0x7f0000000200)='./dev/mapper/control\x00', 0x2, 0x0) ioctl(r5, 0xc138fd0a, &(0x7f0000000300)="0400000000000000000000003801000038010000000000000000000000000000000000000000000000000000000000006364657600") executing program 2: mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./sys\x00', 0x1ff) mount(&(0x7f0000000040)=@filename='sysfs\x00', &(0x7f0000000080)='./sys\x00', &(0x7f00000000c0)='sysfs\x00', 0x0, 0x0) openat(0xffffffffffffff9c, &(0x7f0000000100)='./sys/bus/pci/drivers/ata_piix/0000:00:01.1\x00', 0x0, 0x0) openat(0xffffffffffffff9c, &(0x7f0000000200)='./sys/bus/pci/drivers/ata_piix/0000:00:1f.2\x00', 0x0, 0x0) openat(0xffffffffffffff9c, &(0x7f0000000300)='./sys/bus/pci/drivers/ahci/0000:00:1f.2\x00', 0x0, 0x0) openat(0xffffffffffffff9c, &(0x7f0000000400)='./sys/class/ata_port/ata1\x00', 0x0, 0x0) openat(0xffffffffffffff9c, &(0x7f0000000500)='./sys/class/ata_port/ata2\x00', 0x0, 0x0) executing program 2: mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./sys\x00', 0x1ff) mount(0x0, &(0x7f0000000040)='./sys\x00', &(0x7f0000000080)='sysfs\x00', 0x0, 0x0) r0 = socket$inet(0x2, 0x1, 0x0) ioctl$sock_SIOCBRADDBR(r0, 0x89a0, &(0x7f0000000100)) r1 = openat(0xffffffffffffff9c, &(0x7f0000000200)='./sys/class/net/bridge1/bridge/vlan_stats_enabled\x00', 0x0, 0x0) read(r1, &(0x7f0000000300)=""/100, 0x64) executing program 4: mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./sys\x00', 0x1ff) mount(0x0, &(0x7f0000000040)='./sys\x00', &(0x7f0000000080)='sysfs\x00', 0x0, 0x0) openat$dir(0xffffffffffffff9c, &(0x7f0000000100)='./sys/devices/system/cpu/cpu0\x00', 0x10000, 0x0) executing program 4: mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./sys\x00', 0x1ff) mount(0x0, &(0x7f0000000000)='./sys\x00', &(0x7f0000000100)='sysfs\x00', 0x0, 0x0) r0 = openat$dir(0xffffffffffffff9c, &(0x7f0000000200)='./sys/bus/pci/drivers/hpsa\x00', 0x0, 0x0) getdents64(r0, &(0x7f0000000300)=""/1024, 0x400) executing program 4: mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./sys\x00', 0x1ff) mount(0x0, &(0x7f0000000080)='./sys\x00', &(0x7f00000000c0)='sysfs\x00', 0x0, 0x0) openat(0xffffffffffffff9c, &(0x7f0000000100)='./sys/module/ath11k_core\x00', 0x0, 0x0) openat(0xffffffffffffff9c, &(0x7f0000000200)='./sys/module/ath11k_ahb\x00', 0x0, 0x0) openat(0xffffffffffffff9c, &(0x7f0000000300)='./sys/module/ath11k_pci\x00', 0x0, 0x0) openat(0xffffffffffffff9c, &(0x7f0000000400)='./sys/module/ath11k\x00', 0x0, 0x0) executing program 4: mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./proc\x00', 0x1ff) mount(0x0, &(0x7f0000000000)='./proc\x00', &(0x7f0000000100)='proc\x00', 0x0, 0x0) mkdirat(0xffffffffffffff9c, &(0x7f0000000200)='./nfsd\x00', 0x1ff) mount(0x0, &(0x7f0000000200)='./nfsd\x00', &(0x7f0000000300)='nfsd\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000400)='./nfsd/portlist\x00', 0x2, 0x0) write(r0, &(0x7f0000000500)='tcp 2049\n', 0x9) close(r0) r1 = openat(0xffffffffffffff9c, &(0x7f0000000600)='./nfsd/threads\x00', 0x2, 0x0) write(r1, &(0x7f0000000700)='1\n', 0x2) close(r1) r2 = openat(0xffffffffffffff9c, &(0x7f0000000800)='./proc/net/rpc/auth.unix.ip/channel\x00', 0x2, 0x0) write(r2, &(0x7f0000000900)='nfsd 127.0.0.1 2147483647 localhost\n', 0x24) close(r2) r3 = openat(0xffffffffffffff9c, &(0x7f0000000a00)='./proc/net/rpc/nfsd.fh/channel\x00', 0x2, 0x0) write(r3, &(0x7f0000000b00)='localhost 1 \\x00000000 2147483647 /\n', 0x24) close(r3) mkdirat(0xffffffffffffff9c, &(0x7f0000000e00)='./mnt\x00', 0x1ff) mount$nfs4(&(0x7f0000000f00)='127.0.0.1:/\x00', &(0x7f0000000e00)='./mnt\x00', &(0x7f0000001000), 0x0, &(0x7f0000001100)=ANY=[@ANYBLOB='addr=127.0.0.1,port=2049,proto=tcp,vers=4.0,noresvport']) executing program 4: mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./proc\x00', 0x1ff) mount(0x0, &(0x7f0000000000)='./proc\x00', &(0x7f0000000100)='proc\x00', 0x0, 0x0) mkdirat(0xffffffffffffff9c, &(0x7f0000000200)='./nfsd\x00', 0x1ff) mount(0x0, &(0x7f0000000200)='./nfsd\x00', &(0x7f0000000300)='nfsd\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000400)='./nfsd/portlist\x00', 0x2, 0x0) write(r0, &(0x7f0000000500)='tcp 2049\n', 0x9) close(r0) openat(0xffffffffffffff9c, &(0x7f0000000600)='./nfsd/threads\x00', 0x2, 0x0) r1 = openat(0xffffffffffffff9c, &(0x7f0000000800)='./proc/net/rpc/auth.unix.ip/channel\x00', 0x2, 0x0) write(r1, &(0x7f0000000900)='nfsd 127.0.0.1 2147483647 localhost\n', 0x24) r2 = openat(0xffffffffffffff9c, &(0x7f0000000c00)='./proc/net/rpc/nfsd.export/channel\x00', 0x2, 0x0) write(r2, &(0x7f0000000d00)='localhost / 2147483647 8195 0 0 0\n', 0x22) executing program 4: nanosleep(&(0x7f0000000300)={0x0, 0x1000000}, 0x0) executing program 4: mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./nfsd\x00', 0x1ff) mount(0x0, &(0x7f0000000000)='./nfsd\x00', &(0x7f0000000040)='nfsd\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000100)='./nfsd/portlist\x00', 0x2, 0x0) write(r0, &(0x7f0000000140)='2049\n', 0x5) close(r0) r1 = openat(0xffffffffffffff9c, &(0x7f0000000180)='./nfsd/threads\x00', 0x2, 0x0) write(r1, &(0x7f00000001c0)='4\n', 0x2) close(r1) program crashed: KASAN: use-after-free Write in nfsd_create_serv bisect: the chunk can be dropped bisect: testing without sub-chunk 3/3 testing program (duration=32s, {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}}): [13, 3, 11, 6, 3, 3, 1, 19, 6, 15, 8] detailed listing: executing program 1: mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./proc\x00', 0x1ff) mount(0x0, &(0x7f0000000000)='./proc\x00', &(0x7f0000000100)='proc\x00', 0x0, 0x0) mkdirat(0xffffffffffffff9c, &(0x7f0000000200)='./nfsd\x00', 0x1ff) mount(0x0, &(0x7f0000000200)='./nfsd\x00', &(0x7f0000000300)='nfsd\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000400)='./nfsd/portlist\x00', 0x2, 0x0) write(r0, &(0x7f0000000500)='tcp 2049\n', 0x9) close(r0) r1 = openat(0xffffffffffffff9c, &(0x7f0000000600)='./nfsd/threads\x00', 0x2, 0x0) write(r1, &(0x7f0000000700)='1\n', 0x2) close(r1) write(0xffffffffffffffff, &(0x7f0000000900)='nfsd 127.0.0.1 2147483647 localhost\n', 0x24) r2 = openat(0xffffffffffffff9c, &(0x7f0000000c00)='./proc/net/rpc/nfsd.export/channel\x00', 0x2, 0x0) write(r2, &(0x7f0000000d00)='localhost / 2147483647 8195 0 0 0\n', 0x22) executing program 0: mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./sys\x00', 0x1ff) mount(0x0, &(0x7f0000000000)='./sys\x00', &(0x7f0000000040)='sysfs\x00', 0x0, 0x0) openat(0xffffffffffffff9c, &(0x7f0000000100)='./sys/bus/i2c/drivers/maxtcpc/uevent\x00', 0x1, 0x0) executing program 1: mkdirat(0xffffffffffffff9c, &(0x7f0000000400)='./sys\x00', 0x1ff) mount(0x0, &(0x7f0000000400)='./sys\x00', &(0x7f0000000500)='sysfs\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000600)='./sys/module/block2mtd/parameters/block2mtd\x00', 0x1, 0x0) write(r0, &(0x7f0000000700)='/dev/ram0,65536\n', 0x10) close(r0) r1 = syz_open_dev$mtd(&(0x7f0000000800), 0x1, 0x2) ioctl$MEMERASE(r1, 0x40084d02, &(0x7f0000000900)={0x0, 0x400000}) close(r1) r2 = openat$ubi_ctrl(0xffffffffffffff9c, &(0x7f0000000a00), 0x2, 0x0) ioctl(r2, 0x40186f40, &(0x7f0000000b00)="ffffffff0100"/24) close(r2) executing program 2: mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./proc\x00', 0x1ff) mount(&(0x7f0000000040)=@filename='none\x00', &(0x7f0000000000)='./proc\x00', &(0x7f0000000080)='proc\x00', 0x0, 0x0) mkdirat(0xffffffffffffff9c, &(0x7f0000000100)='./nfsd\x00', 0x1ff) mount(&(0x7f0000000040)=@filename='none\x00', &(0x7f0000000100)='./nfsd\x00', &(0x7f0000000140)='nfsd\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000280)='./proc/net/rpc/auth.unix.ip/channel\x00', 0x2, 0x0) write(r0, &(0x7f00000002c0)='nfsd 127.0.0.1 2147483647 localhost\n', 0x24) executing program 3: mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./sys\x00', 0x1ff) mount(0x0, &(0x7f0000000080)='./sys\x00', &(0x7f00000000c0)='sysfs\x00', 0x0, 0x0) openat(0xffffffffffffff9c, &(0x7f0000000400)='./sys/bus/sdio\x00', 0x0, 0x0) executing program 0: r0 = openat$uhid(0xffffffffffffff9c, &(0x7f0000000000), 0x802, 0x0) write$UHID_CREATE2(r0, &(0x7f0000001000)={0xb, {'syz0\x00', 'syz0\x00', 'syz0\x00', 0x1d, 0x5, 0x57e, 0x306, 0x3, 0xfffffffc, "05010905a10105091901290a150025017501950a8102950175068103c0"}}, 0x135) write$UHID_INPUT2(r0, 0x0, 0xc) executing program 3: syz_mount_image$ubifs(&(0x7f0000000000), &(0x7f0000000100)='./file0\x00', 0x0, &(0x7f0000000200), 0x1, 0x10000, &(0x7f0000000300)="$eJwBAAD//wAAAAE=") executing program 2: mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./proc\x00', 0x1ff) mount(0x0, &(0x7f0000000000)='./proc\x00', &(0x7f0000000100)='proc\x00', 0x0, 0x0) mkdirat(0xffffffffffffff9c, &(0x7f0000000200)='./nfsd\x00', 0x1ff) mount(0x0, &(0x7f0000000200)='./nfsd\x00', &(0x7f0000000300)='nfsd\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000400)='./nfsd/portlist\x00', 0x2, 0x0) write(r0, &(0x7f0000000500)='tcp 2049\n', 0x9) close(r0) r1 = openat(0xffffffffffffff9c, &(0x7f0000000600)='./nfsd/threads\x00', 0x2, 0x0) write(r1, &(0x7f0000000700)='1\n', 0x2) close(r1) r2 = openat(0xffffffffffffff9c, &(0x7f0000000800)='./proc/net/rpc/auth.unix.ip/channel\x00', 0x2, 0x0) write(r2, &(0x7f0000000900)='nfsd 127.0.0.1 2147483647 localhost\n', 0x24) close(r2) r3 = openat(0xffffffffffffff9c, &(0x7f0000000a00)='./proc/net/rpc/nfsd.fh/channel\x00', 0x2, 0x0) write(r3, &(0x7f0000000b00)='localhost 1 \\x00000000 2147483647 /\n', 0x24) close(r3) openat(0xffffffffffffff9c, &(0x7f0000000c00)='./proc/net/rpc/nfsd.export/channel\x00', 0x2, 0x0) mkdirat(0xffffffffffffff9c, &(0x7f0000000e00)='./mnt\x00', 0x1ff) mount$nfs4(&(0x7f0000000f00)='127.0.0.1:/\x00', &(0x7f0000000e00)='./mnt\x00', &(0x7f0000001000), 0x0, &(0x7f0000001100)=ANY=[@ANYBLOB='addr=127.0.0.1,port=2049,proto=tcp,vers=4.0,noresvport']) executing program 0: mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./sys\x00', 0x1ff) mount(0x0, &(0x7f0000000040)='./sys\x00', &(0x7f0000000080)='sysfs\x00', 0x0, 0x0) r0 = syz_init_net_socket$nl_rdma(0x10, 0x3, 0x10) sendmsg$RDMA_NLDEV_CMD_NEWLINK(r0, &(0x7f00000005c0)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x8}, 0xc, &(0x7f0000000580)={&(0x7f00000004c0)=ANY=[@ANYBLOB="380000000314010000000000000000000900020073797a30000000000800410072786500140033006574683000"/56], 0x38}}, 0x0) nanosleep(&(0x7f0000000300)={0x0, 0x5f5e100}, 0x0) openat(0xffffffffffffff9c, &(0x7f0000000200)='./sys/class/infiniband/syz0\x00', 0x0, 0x0) executing program 3: mkdirat(0xffffffffffffff9c, &(0x7f0000000040)='./dev\x00', 0x1ff) mount(0x0, &(0x7f0000000080)='./dev\x00', &(0x7f00000000c0)='devtmpfs\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000100)='./file0\x00', 0x42, 0x1b6) ftruncate(r0, 0x1000000) ioctl$LOOP_SET_FD(0xffffffffffffffff, 0x4c00, r0) r1 = openat(0xffffffffffffff9c, &(0x7f0000000180)='./file1\x00', 0x42, 0x1b6) ftruncate(r1, 0x1000000) r2 = syz_open_dev$loop(&(0x7f0000000140), 0x1, 0x2) ioctl$LOOP_SET_FD(r2, 0x4c00, r1) r3 = openat(0xffffffffffffff9c, &(0x7f00000001c0)='./file2\x00', 0x42, 0x1b6) ftruncate(r3, 0x1000000) r4 = syz_open_dev$loop(&(0x7f0000000140), 0x2, 0x2) ioctl$LOOP_SET_FD(r4, 0x4c00, r3) r5 = openat(0xffffffffffffff9c, &(0x7f0000000200)='./dev/mapper/control\x00', 0x2, 0x0) ioctl(r5, 0xc138fd0a, &(0x7f0000000300)="0400000000000000000000003801000038010000000000000000000000000000000000000000000000000000000000006364657600") executing program 4: mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./nfsd\x00', 0x1ff) mount(0x0, &(0x7f0000000000)='./nfsd\x00', &(0x7f0000000040)='nfsd\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000100)='./nfsd/portlist\x00', 0x2, 0x0) write(r0, &(0x7f0000000140)='2049\n', 0x5) close(r0) r1 = openat(0xffffffffffffff9c, &(0x7f0000000180)='./nfsd/threads\x00', 0x2, 0x0) write(r1, &(0x7f00000001c0)='4\n', 0x2) close(r1) program did not crash bisect: split chunks (needed=true): <10>, <8> bisect: split chunk #0 of len 10 into 2 parts bisect: testing without sub-chunk 1/2 testing program (duration=33s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): [3, 1, 19, 6, 15, 7, 6, 3, 4, 6, 18, 12, 1, 8] detailed listing: executing program 0: r0 = openat$uhid(0xffffffffffffff9c, &(0x7f0000000000), 0x802, 0x0) write$UHID_CREATE2(r0, &(0x7f0000001000)={0xb, {'syz0\x00', 'syz0\x00', 'syz0\x00', 0x1d, 0x5, 0x57e, 0x306, 0x3, 0xfffffffc, "05010905a10105091901290a150025017501950a8102950175068103c0"}}, 0x135) write$UHID_INPUT2(r0, 0x0, 0xc) executing program 3: syz_mount_image$ubifs(&(0x7f0000000000), &(0x7f0000000100)='./file0\x00', 0x0, &(0x7f0000000200), 0x1, 0x10000, &(0x7f0000000300)="$eJwBAAD//wAAAAE=") executing program 2: mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./proc\x00', 0x1ff) mount(0x0, &(0x7f0000000000)='./proc\x00', &(0x7f0000000100)='proc\x00', 0x0, 0x0) mkdirat(0xffffffffffffff9c, &(0x7f0000000200)='./nfsd\x00', 0x1ff) mount(0x0, &(0x7f0000000200)='./nfsd\x00', &(0x7f0000000300)='nfsd\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000400)='./nfsd/portlist\x00', 0x2, 0x0) write(r0, &(0x7f0000000500)='tcp 2049\n', 0x9) close(r0) r1 = openat(0xffffffffffffff9c, &(0x7f0000000600)='./nfsd/threads\x00', 0x2, 0x0) write(r1, &(0x7f0000000700)='1\n', 0x2) close(r1) r2 = openat(0xffffffffffffff9c, &(0x7f0000000800)='./proc/net/rpc/auth.unix.ip/channel\x00', 0x2, 0x0) write(r2, &(0x7f0000000900)='nfsd 127.0.0.1 2147483647 localhost\n', 0x24) close(r2) r3 = openat(0xffffffffffffff9c, &(0x7f0000000a00)='./proc/net/rpc/nfsd.fh/channel\x00', 0x2, 0x0) write(r3, &(0x7f0000000b00)='localhost 1 \\x00000000 2147483647 /\n', 0x24) close(r3) openat(0xffffffffffffff9c, &(0x7f0000000c00)='./proc/net/rpc/nfsd.export/channel\x00', 0x2, 0x0) mkdirat(0xffffffffffffff9c, &(0x7f0000000e00)='./mnt\x00', 0x1ff) mount$nfs4(&(0x7f0000000f00)='127.0.0.1:/\x00', &(0x7f0000000e00)='./mnt\x00', &(0x7f0000001000), 0x0, &(0x7f0000001100)=ANY=[@ANYBLOB='addr=127.0.0.1,port=2049,proto=tcp,vers=4.0,noresvport']) executing program 0: mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./sys\x00', 0x1ff) mount(0x0, &(0x7f0000000040)='./sys\x00', &(0x7f0000000080)='sysfs\x00', 0x0, 0x0) r0 = syz_init_net_socket$nl_rdma(0x10, 0x3, 0x10) sendmsg$RDMA_NLDEV_CMD_NEWLINK(r0, &(0x7f00000005c0)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x8}, 0xc, &(0x7f0000000580)={&(0x7f00000004c0)=ANY=[@ANYBLOB="380000000314010000000000000000000900020073797a30000000000800410072786500140033006574683000"/56], 0x38}}, 0x0) nanosleep(&(0x7f0000000300)={0x0, 0x5f5e100}, 0x0) openat(0xffffffffffffff9c, &(0x7f0000000200)='./sys/class/infiniband/syz0\x00', 0x0, 0x0) executing program 3: mkdirat(0xffffffffffffff9c, &(0x7f0000000040)='./dev\x00', 0x1ff) mount(0x0, &(0x7f0000000080)='./dev\x00', &(0x7f00000000c0)='devtmpfs\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000100)='./file0\x00', 0x42, 0x1b6) ftruncate(r0, 0x1000000) ioctl$LOOP_SET_FD(0xffffffffffffffff, 0x4c00, r0) r1 = openat(0xffffffffffffff9c, &(0x7f0000000180)='./file1\x00', 0x42, 0x1b6) ftruncate(r1, 0x1000000) r2 = syz_open_dev$loop(&(0x7f0000000140), 0x1, 0x2) ioctl$LOOP_SET_FD(r2, 0x4c00, r1) r3 = openat(0xffffffffffffff9c, &(0x7f00000001c0)='./file2\x00', 0x42, 0x1b6) ftruncate(r3, 0x1000000) r4 = syz_open_dev$loop(&(0x7f0000000140), 0x2, 0x2) ioctl$LOOP_SET_FD(r4, 0x4c00, r3) r5 = openat(0xffffffffffffff9c, &(0x7f0000000200)='./dev/mapper/control\x00', 0x2, 0x0) ioctl(r5, 0xc138fd0a, &(0x7f0000000300)="0400000000000000000000003801000038010000000000000000000000000000000000000000000000000000000000006364657600") executing program 2: mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./sys\x00', 0x1ff) mount(&(0x7f0000000040)=@filename='sysfs\x00', &(0x7f0000000080)='./sys\x00', &(0x7f00000000c0)='sysfs\x00', 0x0, 0x0) openat(0xffffffffffffff9c, &(0x7f0000000100)='./sys/bus/pci/drivers/ata_piix/0000:00:01.1\x00', 0x0, 0x0) openat(0xffffffffffffff9c, &(0x7f0000000200)='./sys/bus/pci/drivers/ata_piix/0000:00:1f.2\x00', 0x0, 0x0) openat(0xffffffffffffff9c, &(0x7f0000000300)='./sys/bus/pci/drivers/ahci/0000:00:1f.2\x00', 0x0, 0x0) openat(0xffffffffffffff9c, &(0x7f0000000400)='./sys/class/ata_port/ata1\x00', 0x0, 0x0) openat(0xffffffffffffff9c, &(0x7f0000000500)='./sys/class/ata_port/ata2\x00', 0x0, 0x0) executing program 2: mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./sys\x00', 0x1ff) mount(0x0, &(0x7f0000000040)='./sys\x00', &(0x7f0000000080)='sysfs\x00', 0x0, 0x0) r0 = socket$inet(0x2, 0x1, 0x0) ioctl$sock_SIOCBRADDBR(r0, 0x89a0, &(0x7f0000000100)) r1 = openat(0xffffffffffffff9c, &(0x7f0000000200)='./sys/class/net/bridge1/bridge/vlan_stats_enabled\x00', 0x0, 0x0) read(r1, &(0x7f0000000300)=""/100, 0x64) executing program 4: mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./sys\x00', 0x1ff) mount(0x0, &(0x7f0000000040)='./sys\x00', &(0x7f0000000080)='sysfs\x00', 0x0, 0x0) openat$dir(0xffffffffffffff9c, &(0x7f0000000100)='./sys/devices/system/cpu/cpu0\x00', 0x10000, 0x0) executing program 4: mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./sys\x00', 0x1ff) mount(0x0, &(0x7f0000000000)='./sys\x00', &(0x7f0000000100)='sysfs\x00', 0x0, 0x0) r0 = openat$dir(0xffffffffffffff9c, &(0x7f0000000200)='./sys/bus/pci/drivers/hpsa\x00', 0x0, 0x0) getdents64(r0, &(0x7f0000000300)=""/1024, 0x400) executing program 4: mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./sys\x00', 0x1ff) mount(0x0, &(0x7f0000000080)='./sys\x00', &(0x7f00000000c0)='sysfs\x00', 0x0, 0x0) openat(0xffffffffffffff9c, &(0x7f0000000100)='./sys/module/ath11k_core\x00', 0x0, 0x0) openat(0xffffffffffffff9c, &(0x7f0000000200)='./sys/module/ath11k_ahb\x00', 0x0, 0x0) openat(0xffffffffffffff9c, &(0x7f0000000300)='./sys/module/ath11k_pci\x00', 0x0, 0x0) openat(0xffffffffffffff9c, &(0x7f0000000400)='./sys/module/ath11k\x00', 0x0, 0x0) executing program 4: mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./proc\x00', 0x1ff) mount(0x0, &(0x7f0000000000)='./proc\x00', &(0x7f0000000100)='proc\x00', 0x0, 0x0) mkdirat(0xffffffffffffff9c, &(0x7f0000000200)='./nfsd\x00', 0x1ff) mount(0x0, &(0x7f0000000200)='./nfsd\x00', &(0x7f0000000300)='nfsd\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000400)='./nfsd/portlist\x00', 0x2, 0x0) write(r0, &(0x7f0000000500)='tcp 2049\n', 0x9) close(r0) r1 = openat(0xffffffffffffff9c, &(0x7f0000000600)='./nfsd/threads\x00', 0x2, 0x0) write(r1, &(0x7f0000000700)='1\n', 0x2) close(r1) r2 = openat(0xffffffffffffff9c, &(0x7f0000000800)='./proc/net/rpc/auth.unix.ip/channel\x00', 0x2, 0x0) write(r2, &(0x7f0000000900)='nfsd 127.0.0.1 2147483647 localhost\n', 0x24) close(r2) r3 = openat(0xffffffffffffff9c, &(0x7f0000000a00)='./proc/net/rpc/nfsd.fh/channel\x00', 0x2, 0x0) write(r3, &(0x7f0000000b00)='localhost 1 \\x00000000 2147483647 /\n', 0x24) close(r3) mkdirat(0xffffffffffffff9c, &(0x7f0000000e00)='./mnt\x00', 0x1ff) mount$nfs4(&(0x7f0000000f00)='127.0.0.1:/\x00', &(0x7f0000000e00)='./mnt\x00', &(0x7f0000001000), 0x0, &(0x7f0000001100)=ANY=[@ANYBLOB='addr=127.0.0.1,port=2049,proto=tcp,vers=4.0,noresvport']) executing program 4: mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./proc\x00', 0x1ff) mount(0x0, &(0x7f0000000000)='./proc\x00', &(0x7f0000000100)='proc\x00', 0x0, 0x0) mkdirat(0xffffffffffffff9c, &(0x7f0000000200)='./nfsd\x00', 0x1ff) mount(0x0, &(0x7f0000000200)='./nfsd\x00', &(0x7f0000000300)='nfsd\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000400)='./nfsd/portlist\x00', 0x2, 0x0) write(r0, &(0x7f0000000500)='tcp 2049\n', 0x9) close(r0) openat(0xffffffffffffff9c, &(0x7f0000000600)='./nfsd/threads\x00', 0x2, 0x0) r1 = openat(0xffffffffffffff9c, &(0x7f0000000800)='./proc/net/rpc/auth.unix.ip/channel\x00', 0x2, 0x0) write(r1, &(0x7f0000000900)='nfsd 127.0.0.1 2147483647 localhost\n', 0x24) r2 = openat(0xffffffffffffff9c, &(0x7f0000000c00)='./proc/net/rpc/nfsd.export/channel\x00', 0x2, 0x0) write(r2, &(0x7f0000000d00)='localhost / 2147483647 8195 0 0 0\n', 0x22) executing program 4: nanosleep(&(0x7f0000000300)={0x0, 0x1000000}, 0x0) executing program 4: mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./nfsd\x00', 0x1ff) mount(0x0, &(0x7f0000000000)='./nfsd\x00', &(0x7f0000000040)='nfsd\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000100)='./nfsd/portlist\x00', 0x2, 0x0) write(r0, &(0x7f0000000140)='2049\n', 0x5) close(r0) r1 = openat(0xffffffffffffff9c, &(0x7f0000000180)='./nfsd/threads\x00', 0x2, 0x0) write(r1, &(0x7f00000001c0)='4\n', 0x2) close(r1) program crashed: KASAN: use-after-free Write in nfsd_create_serv bisect: the chunk can be dropped bisect: testing without sub-chunk 2/2 bisect: no need to test this chunk, it's definitely needed bisect: split chunk #1 of len 8 into 2 parts bisect: testing without sub-chunk 1/2 testing program (duration=32s, {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}}): [3, 1, 19, 6, 15, 6, 18, 12, 1, 8] detailed listing: executing program 0: r0 = openat$uhid(0xffffffffffffff9c, &(0x7f0000000000), 0x802, 0x0) write$UHID_CREATE2(r0, &(0x7f0000001000)={0xb, {'syz0\x00', 'syz0\x00', 'syz0\x00', 0x1d, 0x5, 0x57e, 0x306, 0x3, 0xfffffffc, "05010905a10105091901290a150025017501950a8102950175068103c0"}}, 0x135) write$UHID_INPUT2(r0, 0x0, 0xc) executing program 3: syz_mount_image$ubifs(&(0x7f0000000000), &(0x7f0000000100)='./file0\x00', 0x0, &(0x7f0000000200), 0x1, 0x10000, &(0x7f0000000300)="$eJwBAAD//wAAAAE=") executing program 2: mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./proc\x00', 0x1ff) mount(0x0, &(0x7f0000000000)='./proc\x00', &(0x7f0000000100)='proc\x00', 0x0, 0x0) mkdirat(0xffffffffffffff9c, &(0x7f0000000200)='./nfsd\x00', 0x1ff) mount(0x0, &(0x7f0000000200)='./nfsd\x00', &(0x7f0000000300)='nfsd\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000400)='./nfsd/portlist\x00', 0x2, 0x0) write(r0, &(0x7f0000000500)='tcp 2049\n', 0x9) close(r0) r1 = openat(0xffffffffffffff9c, &(0x7f0000000600)='./nfsd/threads\x00', 0x2, 0x0) write(r1, &(0x7f0000000700)='1\n', 0x2) close(r1) r2 = openat(0xffffffffffffff9c, &(0x7f0000000800)='./proc/net/rpc/auth.unix.ip/channel\x00', 0x2, 0x0) write(r2, &(0x7f0000000900)='nfsd 127.0.0.1 2147483647 localhost\n', 0x24) close(r2) r3 = openat(0xffffffffffffff9c, &(0x7f0000000a00)='./proc/net/rpc/nfsd.fh/channel\x00', 0x2, 0x0) write(r3, &(0x7f0000000b00)='localhost 1 \\x00000000 2147483647 /\n', 0x24) close(r3) openat(0xffffffffffffff9c, &(0x7f0000000c00)='./proc/net/rpc/nfsd.export/channel\x00', 0x2, 0x0) mkdirat(0xffffffffffffff9c, &(0x7f0000000e00)='./mnt\x00', 0x1ff) mount$nfs4(&(0x7f0000000f00)='127.0.0.1:/\x00', &(0x7f0000000e00)='./mnt\x00', &(0x7f0000001000), 0x0, &(0x7f0000001100)=ANY=[@ANYBLOB='addr=127.0.0.1,port=2049,proto=tcp,vers=4.0,noresvport']) executing program 0: mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./sys\x00', 0x1ff) mount(0x0, &(0x7f0000000040)='./sys\x00', &(0x7f0000000080)='sysfs\x00', 0x0, 0x0) r0 = syz_init_net_socket$nl_rdma(0x10, 0x3, 0x10) sendmsg$RDMA_NLDEV_CMD_NEWLINK(r0, &(0x7f00000005c0)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x8}, 0xc, &(0x7f0000000580)={&(0x7f00000004c0)=ANY=[@ANYBLOB="380000000314010000000000000000000900020073797a30000000000800410072786500140033006574683000"/56], 0x38}}, 0x0) nanosleep(&(0x7f0000000300)={0x0, 0x5f5e100}, 0x0) openat(0xffffffffffffff9c, &(0x7f0000000200)='./sys/class/infiniband/syz0\x00', 0x0, 0x0) executing program 3: mkdirat(0xffffffffffffff9c, &(0x7f0000000040)='./dev\x00', 0x1ff) mount(0x0, &(0x7f0000000080)='./dev\x00', &(0x7f00000000c0)='devtmpfs\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000100)='./file0\x00', 0x42, 0x1b6) ftruncate(r0, 0x1000000) ioctl$LOOP_SET_FD(0xffffffffffffffff, 0x4c00, r0) r1 = openat(0xffffffffffffff9c, &(0x7f0000000180)='./file1\x00', 0x42, 0x1b6) ftruncate(r1, 0x1000000) r2 = syz_open_dev$loop(&(0x7f0000000140), 0x1, 0x2) ioctl$LOOP_SET_FD(r2, 0x4c00, r1) r3 = openat(0xffffffffffffff9c, &(0x7f00000001c0)='./file2\x00', 0x42, 0x1b6) ftruncate(r3, 0x1000000) r4 = syz_open_dev$loop(&(0x7f0000000140), 0x2, 0x2) ioctl$LOOP_SET_FD(r4, 0x4c00, r3) r5 = openat(0xffffffffffffff9c, &(0x7f0000000200)='./dev/mapper/control\x00', 0x2, 0x0) ioctl(r5, 0xc138fd0a, &(0x7f0000000300)="0400000000000000000000003801000038010000000000000000000000000000000000000000000000000000000000006364657600") executing program 4: mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./sys\x00', 0x1ff) mount(0x0, &(0x7f0000000080)='./sys\x00', &(0x7f00000000c0)='sysfs\x00', 0x0, 0x0) openat(0xffffffffffffff9c, &(0x7f0000000100)='./sys/module/ath11k_core\x00', 0x0, 0x0) openat(0xffffffffffffff9c, &(0x7f0000000200)='./sys/module/ath11k_ahb\x00', 0x0, 0x0) openat(0xffffffffffffff9c, &(0x7f0000000300)='./sys/module/ath11k_pci\x00', 0x0, 0x0) openat(0xffffffffffffff9c, &(0x7f0000000400)='./sys/module/ath11k\x00', 0x0, 0x0) executing program 4: mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./proc\x00', 0x1ff) mount(0x0, &(0x7f0000000000)='./proc\x00', &(0x7f0000000100)='proc\x00', 0x0, 0x0) mkdirat(0xffffffffffffff9c, &(0x7f0000000200)='./nfsd\x00', 0x1ff) mount(0x0, &(0x7f0000000200)='./nfsd\x00', &(0x7f0000000300)='nfsd\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000400)='./nfsd/portlist\x00', 0x2, 0x0) write(r0, &(0x7f0000000500)='tcp 2049\n', 0x9) close(r0) r1 = openat(0xffffffffffffff9c, &(0x7f0000000600)='./nfsd/threads\x00', 0x2, 0x0) write(r1, &(0x7f0000000700)='1\n', 0x2) close(r1) r2 = openat(0xffffffffffffff9c, &(0x7f0000000800)='./proc/net/rpc/auth.unix.ip/channel\x00', 0x2, 0x0) write(r2, &(0x7f0000000900)='nfsd 127.0.0.1 2147483647 localhost\n', 0x24) close(r2) r3 = openat(0xffffffffffffff9c, &(0x7f0000000a00)='./proc/net/rpc/nfsd.fh/channel\x00', 0x2, 0x0) write(r3, &(0x7f0000000b00)='localhost 1 \\x00000000 2147483647 /\n', 0x24) close(r3) mkdirat(0xffffffffffffff9c, &(0x7f0000000e00)='./mnt\x00', 0x1ff) mount$nfs4(&(0x7f0000000f00)='127.0.0.1:/\x00', &(0x7f0000000e00)='./mnt\x00', &(0x7f0000001000), 0x0, &(0x7f0000001100)=ANY=[@ANYBLOB='addr=127.0.0.1,port=2049,proto=tcp,vers=4.0,noresvport']) executing program 4: mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./proc\x00', 0x1ff) mount(0x0, &(0x7f0000000000)='./proc\x00', &(0x7f0000000100)='proc\x00', 0x0, 0x0) mkdirat(0xffffffffffffff9c, &(0x7f0000000200)='./nfsd\x00', 0x1ff) mount(0x0, &(0x7f0000000200)='./nfsd\x00', &(0x7f0000000300)='nfsd\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000400)='./nfsd/portlist\x00', 0x2, 0x0) write(r0, &(0x7f0000000500)='tcp 2049\n', 0x9) close(r0) openat(0xffffffffffffff9c, &(0x7f0000000600)='./nfsd/threads\x00', 0x2, 0x0) r1 = openat(0xffffffffffffff9c, &(0x7f0000000800)='./proc/net/rpc/auth.unix.ip/channel\x00', 0x2, 0x0) write(r1, &(0x7f0000000900)='nfsd 127.0.0.1 2147483647 localhost\n', 0x24) r2 = openat(0xffffffffffffff9c, &(0x7f0000000c00)='./proc/net/rpc/nfsd.export/channel\x00', 0x2, 0x0) write(r2, &(0x7f0000000d00)='localhost / 2147483647 8195 0 0 0\n', 0x22) executing program 4: nanosleep(&(0x7f0000000300)={0x0, 0x1000000}, 0x0) executing program 4: mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./nfsd\x00', 0x1ff) mount(0x0, &(0x7f0000000000)='./nfsd\x00', &(0x7f0000000040)='nfsd\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000100)='./nfsd/portlist\x00', 0x2, 0x0) write(r0, &(0x7f0000000140)='2049\n', 0x5) close(r0) r1 = openat(0xffffffffffffff9c, &(0x7f0000000180)='./nfsd/threads\x00', 0x2, 0x0) write(r1, &(0x7f00000001c0)='4\n', 0x2) close(r1) program crashed: kernel BUG in svc_destroy bisect: the chunk can be dropped bisect: testing without sub-chunk 2/2 bisect: no need to test this chunk, it's definitely needed bisect: split chunks (needed=true): <5>, <4> bisect: split chunk #0 of len 5 into 2 parts bisect: testing without sub-chunk 1/2 testing program (duration=31s, {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}}): [6, 15, 6, 18, 12, 1, 8] detailed listing: executing program 0: mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./sys\x00', 0x1ff) mount(0x0, &(0x7f0000000040)='./sys\x00', &(0x7f0000000080)='sysfs\x00', 0x0, 0x0) r0 = syz_init_net_socket$nl_rdma(0x10, 0x3, 0x10) sendmsg$RDMA_NLDEV_CMD_NEWLINK(r0, &(0x7f00000005c0)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x8}, 0xc, &(0x7f0000000580)={&(0x7f00000004c0)=ANY=[@ANYBLOB="380000000314010000000000000000000900020073797a30000000000800410072786500140033006574683000"/56], 0x38}}, 0x0) nanosleep(&(0x7f0000000300)={0x0, 0x5f5e100}, 0x0) openat(0xffffffffffffff9c, &(0x7f0000000200)='./sys/class/infiniband/syz0\x00', 0x0, 0x0) executing program 3: mkdirat(0xffffffffffffff9c, &(0x7f0000000040)='./dev\x00', 0x1ff) mount(0x0, &(0x7f0000000080)='./dev\x00', &(0x7f00000000c0)='devtmpfs\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000100)='./file0\x00', 0x42, 0x1b6) ftruncate(r0, 0x1000000) ioctl$LOOP_SET_FD(0xffffffffffffffff, 0x4c00, r0) r1 = openat(0xffffffffffffff9c, &(0x7f0000000180)='./file1\x00', 0x42, 0x1b6) ftruncate(r1, 0x1000000) r2 = syz_open_dev$loop(&(0x7f0000000140), 0x1, 0x2) ioctl$LOOP_SET_FD(r2, 0x4c00, r1) r3 = openat(0xffffffffffffff9c, &(0x7f00000001c0)='./file2\x00', 0x42, 0x1b6) ftruncate(r3, 0x1000000) r4 = syz_open_dev$loop(&(0x7f0000000140), 0x2, 0x2) ioctl$LOOP_SET_FD(r4, 0x4c00, r3) r5 = openat(0xffffffffffffff9c, &(0x7f0000000200)='./dev/mapper/control\x00', 0x2, 0x0) ioctl(r5, 0xc138fd0a, &(0x7f0000000300)="0400000000000000000000003801000038010000000000000000000000000000000000000000000000000000000000006364657600") executing program 4: mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./sys\x00', 0x1ff) mount(0x0, &(0x7f0000000080)='./sys\x00', &(0x7f00000000c0)='sysfs\x00', 0x0, 0x0) openat(0xffffffffffffff9c, &(0x7f0000000100)='./sys/module/ath11k_core\x00', 0x0, 0x0) openat(0xffffffffffffff9c, &(0x7f0000000200)='./sys/module/ath11k_ahb\x00', 0x0, 0x0) openat(0xffffffffffffff9c, &(0x7f0000000300)='./sys/module/ath11k_pci\x00', 0x0, 0x0) openat(0xffffffffffffff9c, &(0x7f0000000400)='./sys/module/ath11k\x00', 0x0, 0x0) executing program 4: mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./proc\x00', 0x1ff) mount(0x0, &(0x7f0000000000)='./proc\x00', &(0x7f0000000100)='proc\x00', 0x0, 0x0) mkdirat(0xffffffffffffff9c, &(0x7f0000000200)='./nfsd\x00', 0x1ff) mount(0x0, &(0x7f0000000200)='./nfsd\x00', &(0x7f0000000300)='nfsd\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000400)='./nfsd/portlist\x00', 0x2, 0x0) write(r0, &(0x7f0000000500)='tcp 2049\n', 0x9) close(r0) r1 = openat(0xffffffffffffff9c, &(0x7f0000000600)='./nfsd/threads\x00', 0x2, 0x0) write(r1, &(0x7f0000000700)='1\n', 0x2) close(r1) r2 = openat(0xffffffffffffff9c, &(0x7f0000000800)='./proc/net/rpc/auth.unix.ip/channel\x00', 0x2, 0x0) write(r2, &(0x7f0000000900)='nfsd 127.0.0.1 2147483647 localhost\n', 0x24) close(r2) r3 = openat(0xffffffffffffff9c, &(0x7f0000000a00)='./proc/net/rpc/nfsd.fh/channel\x00', 0x2, 0x0) write(r3, &(0x7f0000000b00)='localhost 1 \\x00000000 2147483647 /\n', 0x24) close(r3) mkdirat(0xffffffffffffff9c, &(0x7f0000000e00)='./mnt\x00', 0x1ff) mount$nfs4(&(0x7f0000000f00)='127.0.0.1:/\x00', &(0x7f0000000e00)='./mnt\x00', &(0x7f0000001000), 0x0, &(0x7f0000001100)=ANY=[@ANYBLOB='addr=127.0.0.1,port=2049,proto=tcp,vers=4.0,noresvport']) executing program 4: mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./proc\x00', 0x1ff) mount(0x0, &(0x7f0000000000)='./proc\x00', &(0x7f0000000100)='proc\x00', 0x0, 0x0) mkdirat(0xffffffffffffff9c, &(0x7f0000000200)='./nfsd\x00', 0x1ff) mount(0x0, &(0x7f0000000200)='./nfsd\x00', &(0x7f0000000300)='nfsd\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000400)='./nfsd/portlist\x00', 0x2, 0x0) write(r0, &(0x7f0000000500)='tcp 2049\n', 0x9) close(r0) openat(0xffffffffffffff9c, &(0x7f0000000600)='./nfsd/threads\x00', 0x2, 0x0) r1 = openat(0xffffffffffffff9c, &(0x7f0000000800)='./proc/net/rpc/auth.unix.ip/channel\x00', 0x2, 0x0) write(r1, &(0x7f0000000900)='nfsd 127.0.0.1 2147483647 localhost\n', 0x24) r2 = openat(0xffffffffffffff9c, &(0x7f0000000c00)='./proc/net/rpc/nfsd.export/channel\x00', 0x2, 0x0) write(r2, &(0x7f0000000d00)='localhost / 2147483647 8195 0 0 0\n', 0x22) executing program 4: nanosleep(&(0x7f0000000300)={0x0, 0x1000000}, 0x0) executing program 4: mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./nfsd\x00', 0x1ff) mount(0x0, &(0x7f0000000000)='./nfsd\x00', &(0x7f0000000040)='nfsd\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000100)='./nfsd/portlist\x00', 0x2, 0x0) write(r0, &(0x7f0000000140)='2049\n', 0x5) close(r0) r1 = openat(0xffffffffffffff9c, &(0x7f0000000180)='./nfsd/threads\x00', 0x2, 0x0) write(r1, &(0x7f00000001c0)='4\n', 0x2) close(r1) program crashed: kernel BUG in svc_destroy bisect: the chunk can be dropped bisect: testing without sub-chunk 2/2 bisect: no need to test this chunk, it's definitely needed bisect: split chunk #1 of len 4 into 2 parts bisect: testing without sub-chunk 1/2 testing program (duration=31s, {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}}): [6, 15, 12, 1, 8] detailed listing: executing program 0: mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./sys\x00', 0x1ff) mount(0x0, &(0x7f0000000040)='./sys\x00', &(0x7f0000000080)='sysfs\x00', 0x0, 0x0) r0 = syz_init_net_socket$nl_rdma(0x10, 0x3, 0x10) sendmsg$RDMA_NLDEV_CMD_NEWLINK(r0, &(0x7f00000005c0)={&(0x7f0000000000)={0x10, 0x0, 0x0, 0x8}, 0xc, &(0x7f0000000580)={&(0x7f00000004c0)=ANY=[@ANYBLOB="380000000314010000000000000000000900020073797a30000000000800410072786500140033006574683000"/56], 0x38}}, 0x0) nanosleep(&(0x7f0000000300)={0x0, 0x5f5e100}, 0x0) openat(0xffffffffffffff9c, &(0x7f0000000200)='./sys/class/infiniband/syz0\x00', 0x0, 0x0) executing program 3: mkdirat(0xffffffffffffff9c, &(0x7f0000000040)='./dev\x00', 0x1ff) mount(0x0, &(0x7f0000000080)='./dev\x00', &(0x7f00000000c0)='devtmpfs\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000100)='./file0\x00', 0x42, 0x1b6) ftruncate(r0, 0x1000000) ioctl$LOOP_SET_FD(0xffffffffffffffff, 0x4c00, r0) r1 = openat(0xffffffffffffff9c, &(0x7f0000000180)='./file1\x00', 0x42, 0x1b6) ftruncate(r1, 0x1000000) r2 = syz_open_dev$loop(&(0x7f0000000140), 0x1, 0x2) ioctl$LOOP_SET_FD(r2, 0x4c00, r1) r3 = openat(0xffffffffffffff9c, &(0x7f00000001c0)='./file2\x00', 0x42, 0x1b6) ftruncate(r3, 0x1000000) r4 = syz_open_dev$loop(&(0x7f0000000140), 0x2, 0x2) ioctl$LOOP_SET_FD(r4, 0x4c00, r3) r5 = openat(0xffffffffffffff9c, &(0x7f0000000200)='./dev/mapper/control\x00', 0x2, 0x0) ioctl(r5, 0xc138fd0a, &(0x7f0000000300)="0400000000000000000000003801000038010000000000000000000000000000000000000000000000000000000000006364657600") executing program 4: mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./proc\x00', 0x1ff) mount(0x0, &(0x7f0000000000)='./proc\x00', &(0x7f0000000100)='proc\x00', 0x0, 0x0) mkdirat(0xffffffffffffff9c, &(0x7f0000000200)='./nfsd\x00', 0x1ff) mount(0x0, &(0x7f0000000200)='./nfsd\x00', &(0x7f0000000300)='nfsd\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000400)='./nfsd/portlist\x00', 0x2, 0x0) write(r0, &(0x7f0000000500)='tcp 2049\n', 0x9) close(r0) openat(0xffffffffffffff9c, &(0x7f0000000600)='./nfsd/threads\x00', 0x2, 0x0) r1 = openat(0xffffffffffffff9c, &(0x7f0000000800)='./proc/net/rpc/auth.unix.ip/channel\x00', 0x2, 0x0) write(r1, &(0x7f0000000900)='nfsd 127.0.0.1 2147483647 localhost\n', 0x24) r2 = openat(0xffffffffffffff9c, &(0x7f0000000c00)='./proc/net/rpc/nfsd.export/channel\x00', 0x2, 0x0) write(r2, &(0x7f0000000d00)='localhost / 2147483647 8195 0 0 0\n', 0x22) executing program 4: nanosleep(&(0x7f0000000300)={0x0, 0x1000000}, 0x0) executing program 4: mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./nfsd\x00', 0x1ff) mount(0x0, &(0x7f0000000000)='./nfsd\x00', &(0x7f0000000040)='nfsd\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000100)='./nfsd/portlist\x00', 0x2, 0x0) write(r0, &(0x7f0000000140)='2049\n', 0x5) close(r0) r1 = openat(0xffffffffffffff9c, &(0x7f0000000180)='./nfsd/threads\x00', 0x2, 0x0) write(r1, &(0x7f00000001c0)='4\n', 0x2) close(r1) program crashed: KASAN: use-after-free Write in nfsd_create_serv bisect: the chunk can be dropped bisect: testing without sub-chunk 2/2 bisect: no need to test this chunk, it's definitely needed bisect: split chunks (needed=true): <2>, <2> bisect: split chunk #0 of len 2 into 2 parts bisect: testing without sub-chunk 1/2 testing program (duration=31s, {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}}): [15, 12, 1, 8] detailed listing: executing program 3: mkdirat(0xffffffffffffff9c, &(0x7f0000000040)='./dev\x00', 0x1ff) mount(0x0, &(0x7f0000000080)='./dev\x00', &(0x7f00000000c0)='devtmpfs\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000100)='./file0\x00', 0x42, 0x1b6) ftruncate(r0, 0x1000000) ioctl$LOOP_SET_FD(0xffffffffffffffff, 0x4c00, r0) r1 = openat(0xffffffffffffff9c, &(0x7f0000000180)='./file1\x00', 0x42, 0x1b6) ftruncate(r1, 0x1000000) r2 = syz_open_dev$loop(&(0x7f0000000140), 0x1, 0x2) ioctl$LOOP_SET_FD(r2, 0x4c00, r1) r3 = openat(0xffffffffffffff9c, &(0x7f00000001c0)='./file2\x00', 0x42, 0x1b6) ftruncate(r3, 0x1000000) r4 = syz_open_dev$loop(&(0x7f0000000140), 0x2, 0x2) ioctl$LOOP_SET_FD(r4, 0x4c00, r3) r5 = openat(0xffffffffffffff9c, &(0x7f0000000200)='./dev/mapper/control\x00', 0x2, 0x0) ioctl(r5, 0xc138fd0a, &(0x7f0000000300)="0400000000000000000000003801000038010000000000000000000000000000000000000000000000000000000000006364657600") executing program 4: mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./proc\x00', 0x1ff) mount(0x0, &(0x7f0000000000)='./proc\x00', &(0x7f0000000100)='proc\x00', 0x0, 0x0) mkdirat(0xffffffffffffff9c, &(0x7f0000000200)='./nfsd\x00', 0x1ff) mount(0x0, &(0x7f0000000200)='./nfsd\x00', &(0x7f0000000300)='nfsd\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000400)='./nfsd/portlist\x00', 0x2, 0x0) write(r0, &(0x7f0000000500)='tcp 2049\n', 0x9) close(r0) openat(0xffffffffffffff9c, &(0x7f0000000600)='./nfsd/threads\x00', 0x2, 0x0) r1 = openat(0xffffffffffffff9c, &(0x7f0000000800)='./proc/net/rpc/auth.unix.ip/channel\x00', 0x2, 0x0) write(r1, &(0x7f0000000900)='nfsd 127.0.0.1 2147483647 localhost\n', 0x24) r2 = openat(0xffffffffffffff9c, &(0x7f0000000c00)='./proc/net/rpc/nfsd.export/channel\x00', 0x2, 0x0) write(r2, &(0x7f0000000d00)='localhost / 2147483647 8195 0 0 0\n', 0x22) executing program 4: nanosleep(&(0x7f0000000300)={0x0, 0x1000000}, 0x0) executing program 4: mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./nfsd\x00', 0x1ff) mount(0x0, &(0x7f0000000000)='./nfsd\x00', &(0x7f0000000040)='nfsd\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000100)='./nfsd/portlist\x00', 0x2, 0x0) write(r0, &(0x7f0000000140)='2049\n', 0x5) close(r0) r1 = openat(0xffffffffffffff9c, &(0x7f0000000180)='./nfsd/threads\x00', 0x2, 0x0) write(r1, &(0x7f00000001c0)='4\n', 0x2) close(r1) program crashed: KASAN: use-after-free Write in nfsd_create_serv bisect: the chunk can be dropped bisect: testing without sub-chunk 2/2 bisect: no need to test this chunk, it's definitely needed bisect: split chunk #1 of len 2 into 2 parts bisect: testing without sub-chunk 1/2 testing program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): [15, 1, 8] detailed listing: executing program 3: mkdirat(0xffffffffffffff9c, &(0x7f0000000040)='./dev\x00', 0x1ff) mount(0x0, &(0x7f0000000080)='./dev\x00', &(0x7f00000000c0)='devtmpfs\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000100)='./file0\x00', 0x42, 0x1b6) ftruncate(r0, 0x1000000) ioctl$LOOP_SET_FD(0xffffffffffffffff, 0x4c00, r0) r1 = openat(0xffffffffffffff9c, &(0x7f0000000180)='./file1\x00', 0x42, 0x1b6) ftruncate(r1, 0x1000000) r2 = syz_open_dev$loop(&(0x7f0000000140), 0x1, 0x2) ioctl$LOOP_SET_FD(r2, 0x4c00, r1) r3 = openat(0xffffffffffffff9c, &(0x7f00000001c0)='./file2\x00', 0x42, 0x1b6) ftruncate(r3, 0x1000000) r4 = syz_open_dev$loop(&(0x7f0000000140), 0x2, 0x2) ioctl$LOOP_SET_FD(r4, 0x4c00, r3) r5 = openat(0xffffffffffffff9c, &(0x7f0000000200)='./dev/mapper/control\x00', 0x2, 0x0) ioctl(r5, 0xc138fd0a, &(0x7f0000000300)="0400000000000000000000003801000038010000000000000000000000000000000000000000000000000000000000006364657600") executing program 4: nanosleep(&(0x7f0000000300)={0x0, 0x1000000}, 0x0) executing program 4: mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./nfsd\x00', 0x1ff) mount(0x0, &(0x7f0000000000)='./nfsd\x00', &(0x7f0000000040)='nfsd\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000100)='./nfsd/portlist\x00', 0x2, 0x0) write(r0, &(0x7f0000000140)='2049\n', 0x5) close(r0) r1 = openat(0xffffffffffffff9c, &(0x7f0000000180)='./nfsd/threads\x00', 0x2, 0x0) write(r1, &(0x7f00000001c0)='4\n', 0x2) close(r1) program did not crash bisect: testing without sub-chunk 2/2 testing program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): [15, 12, 8] detailed listing: executing program 3: mkdirat(0xffffffffffffff9c, &(0x7f0000000040)='./dev\x00', 0x1ff) mount(0x0, &(0x7f0000000080)='./dev\x00', &(0x7f00000000c0)='devtmpfs\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000100)='./file0\x00', 0x42, 0x1b6) ftruncate(r0, 0x1000000) ioctl$LOOP_SET_FD(0xffffffffffffffff, 0x4c00, r0) r1 = openat(0xffffffffffffff9c, &(0x7f0000000180)='./file1\x00', 0x42, 0x1b6) ftruncate(r1, 0x1000000) r2 = syz_open_dev$loop(&(0x7f0000000140), 0x1, 0x2) ioctl$LOOP_SET_FD(r2, 0x4c00, r1) r3 = openat(0xffffffffffffff9c, &(0x7f00000001c0)='./file2\x00', 0x42, 0x1b6) ftruncate(r3, 0x1000000) r4 = syz_open_dev$loop(&(0x7f0000000140), 0x2, 0x2) ioctl$LOOP_SET_FD(r4, 0x4c00, r3) r5 = openat(0xffffffffffffff9c, &(0x7f0000000200)='./dev/mapper/control\x00', 0x2, 0x0) ioctl(r5, 0xc138fd0a, &(0x7f0000000300)="0400000000000000000000003801000038010000000000000000000000000000000000000000000000000000000000006364657600") executing program 4: mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./proc\x00', 0x1ff) mount(0x0, &(0x7f0000000000)='./proc\x00', &(0x7f0000000100)='proc\x00', 0x0, 0x0) mkdirat(0xffffffffffffff9c, &(0x7f0000000200)='./nfsd\x00', 0x1ff) mount(0x0, &(0x7f0000000200)='./nfsd\x00', &(0x7f0000000300)='nfsd\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000400)='./nfsd/portlist\x00', 0x2, 0x0) write(r0, &(0x7f0000000500)='tcp 2049\n', 0x9) close(r0) openat(0xffffffffffffff9c, &(0x7f0000000600)='./nfsd/threads\x00', 0x2, 0x0) r1 = openat(0xffffffffffffff9c, &(0x7f0000000800)='./proc/net/rpc/auth.unix.ip/channel\x00', 0x2, 0x0) write(r1, &(0x7f0000000900)='nfsd 127.0.0.1 2147483647 localhost\n', 0x24) r2 = openat(0xffffffffffffff9c, &(0x7f0000000c00)='./proc/net/rpc/nfsd.export/channel\x00', 0x2, 0x0) write(r2, &(0x7f0000000d00)='localhost / 2147483647 8195 0 0 0\n', 0x22) executing program 4: mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./nfsd\x00', 0x1ff) mount(0x0, &(0x7f0000000000)='./nfsd\x00', &(0x7f0000000040)='nfsd\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000100)='./nfsd/portlist\x00', 0x2, 0x0) write(r0, &(0x7f0000000140)='2049\n', 0x5) close(r0) r1 = openat(0xffffffffffffff9c, &(0x7f0000000180)='./nfsd/threads\x00', 0x2, 0x0) write(r1, &(0x7f00000001c0)='4\n', 0x2) close(r1) program crashed: KASAN: use-after-free Write in nfsd_create_serv bisect: the chunk can be dropped bisect: split chunks (needed=true): <1>, <1> bisect: split chunk #0 of len 1 into 2 parts bisect: no way to further split the chunk bisect: split chunk #1 of len 1 into 2 parts bisect: no way to further split the chunk bisect: 3 programs left: executing program 3: mkdirat(0xffffffffffffff9c, &(0x7f0000000040)='./dev\x00', 0x1ff) mount(0x0, &(0x7f0000000080)='./dev\x00', &(0x7f00000000c0)='devtmpfs\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000100)='./file0\x00', 0x42, 0x1b6) ftruncate(r0, 0x1000000) ioctl$LOOP_SET_FD(0xffffffffffffffff, 0x4c00, r0) r1 = openat(0xffffffffffffff9c, &(0x7f0000000180)='./file1\x00', 0x42, 0x1b6) ftruncate(r1, 0x1000000) r2 = syz_open_dev$loop(&(0x7f0000000140), 0x1, 0x2) ioctl$LOOP_SET_FD(r2, 0x4c00, r1) r3 = openat(0xffffffffffffff9c, &(0x7f00000001c0)='./file2\x00', 0x42, 0x1b6) ftruncate(r3, 0x1000000) r4 = syz_open_dev$loop(&(0x7f0000000140), 0x2, 0x2) ioctl$LOOP_SET_FD(r4, 0x4c00, r3) r5 = openat(0xffffffffffffff9c, &(0x7f0000000200)='./dev/mapper/control\x00', 0x2, 0x0) ioctl(r5, 0xc138fd0a, &(0x7f0000000300)="0400000000000000000000003801000038010000000000000000000000000000000000000000000000000000000000006364657600") executing program 4: mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./proc\x00', 0x1ff) mount(0x0, &(0x7f0000000000)='./proc\x00', &(0x7f0000000100)='proc\x00', 0x0, 0x0) mkdirat(0xffffffffffffff9c, &(0x7f0000000200)='./nfsd\x00', 0x1ff) mount(0x0, &(0x7f0000000200)='./nfsd\x00', &(0x7f0000000300)='nfsd\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000400)='./nfsd/portlist\x00', 0x2, 0x0) write(r0, &(0x7f0000000500)='tcp 2049\n', 0x9) close(r0) openat(0xffffffffffffff9c, &(0x7f0000000600)='./nfsd/threads\x00', 0x2, 0x0) r1 = openat(0xffffffffffffff9c, &(0x7f0000000800)='./proc/net/rpc/auth.unix.ip/channel\x00', 0x2, 0x0) write(r1, &(0x7f0000000900)='nfsd 127.0.0.1 2147483647 localhost\n', 0x24) r2 = openat(0xffffffffffffff9c, &(0x7f0000000c00)='./proc/net/rpc/nfsd.export/channel\x00', 0x2, 0x0) write(r2, &(0x7f0000000d00)='localhost / 2147483647 8195 0 0 0\n', 0x22) executing program 4: mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./nfsd\x00', 0x1ff) mount(0x0, &(0x7f0000000000)='./nfsd\x00', &(0x7f0000000040)='nfsd\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000100)='./nfsd/portlist\x00', 0x2, 0x0) write(r0, &(0x7f0000000140)='2049\n', 0x5) close(r0) r1 = openat(0xffffffffffffff9c, &(0x7f0000000180)='./nfsd/threads\x00', 0x2, 0x0) write(r1, &(0x7f00000001c0)='4\n', 0x2) close(r1) bisect: trying to concatenate bisect: concatenate 3 entries minimizing program #0 before concatenation testing program (duration=45s, {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}}): [14, 12, 8] detailed listing: executing program 0: mkdirat(0xffffffffffffff9c, &(0x7f0000000040)='./dev\x00', 0x1ff) mount(0x0, &(0x7f0000000080)='./dev\x00', &(0x7f00000000c0)='devtmpfs\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000100)='./file0\x00', 0x42, 0x1b6) ftruncate(r0, 0x1000000) ioctl$LOOP_SET_FD(0xffffffffffffffff, 0x4c00, r0) r1 = openat(0xffffffffffffff9c, &(0x7f0000000180)='./file1\x00', 0x42, 0x1b6) ftruncate(r1, 0x1000000) r2 = syz_open_dev$loop(&(0x7f0000000140), 0x1, 0x2) ioctl$LOOP_SET_FD(r2, 0x4c00, r1) r3 = openat(0xffffffffffffff9c, &(0x7f00000001c0)='./file2\x00', 0x42, 0x1b6) ftruncate(r3, 0x1000000) r4 = syz_open_dev$loop(&(0x7f0000000140), 0x2, 0x2) ioctl$LOOP_SET_FD(r4, 0x4c00, r3) openat(0xffffffffffffff9c, &(0x7f0000000200)='./dev/mapper/control\x00', 0x2, 0x0) executing program 4: mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./proc\x00', 0x1ff) mount(0x0, &(0x7f0000000000)='./proc\x00', &(0x7f0000000100)='proc\x00', 0x0, 0x0) mkdirat(0xffffffffffffff9c, &(0x7f0000000200)='./nfsd\x00', 0x1ff) mount(0x0, &(0x7f0000000200)='./nfsd\x00', &(0x7f0000000300)='nfsd\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000400)='./nfsd/portlist\x00', 0x2, 0x0) write(r0, &(0x7f0000000500)='tcp 2049\n', 0x9) close(r0) openat(0xffffffffffffff9c, &(0x7f0000000600)='./nfsd/threads\x00', 0x2, 0x0) r1 = openat(0xffffffffffffff9c, &(0x7f0000000800)='./proc/net/rpc/auth.unix.ip/channel\x00', 0x2, 0x0) write(r1, &(0x7f0000000900)='nfsd 127.0.0.1 2147483647 localhost\n', 0x24) r2 = openat(0xffffffffffffff9c, &(0x7f0000000c00)='./proc/net/rpc/nfsd.export/channel\x00', 0x2, 0x0) write(r2, &(0x7f0000000d00)='localhost / 2147483647 8195 0 0 0\n', 0x22) executing program 4: mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./nfsd\x00', 0x1ff) mount(0x0, &(0x7f0000000000)='./nfsd\x00', &(0x7f0000000040)='nfsd\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000100)='./nfsd/portlist\x00', 0x2, 0x0) write(r0, &(0x7f0000000140)='2049\n', 0x5) close(r0) r1 = openat(0xffffffffffffff9c, &(0x7f0000000180)='./nfsd/threads\x00', 0x2, 0x0) write(r1, &(0x7f00000001c0)='4\n', 0x2) close(r1) program crashed: kernel BUG in svc_destroy testing program (duration=45s, {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}}): [13, 12, 8] detailed listing: executing program 0: mkdirat(0xffffffffffffff9c, &(0x7f0000000040)='./dev\x00', 0x1ff) mount(0x0, &(0x7f0000000080)='./dev\x00', &(0x7f00000000c0)='devtmpfs\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000100)='./file0\x00', 0x42, 0x1b6) ftruncate(r0, 0x1000000) ioctl$LOOP_SET_FD(0xffffffffffffffff, 0x4c00, r0) r1 = openat(0xffffffffffffff9c, &(0x7f0000000180)='./file1\x00', 0x42, 0x1b6) ftruncate(r1, 0x1000000) r2 = syz_open_dev$loop(&(0x7f0000000140), 0x1, 0x2) ioctl$LOOP_SET_FD(r2, 0x4c00, r1) r3 = openat(0xffffffffffffff9c, &(0x7f00000001c0)='./file2\x00', 0x42, 0x1b6) ftruncate(r3, 0x1000000) r4 = syz_open_dev$loop(&(0x7f0000000140), 0x2, 0x2) ioctl$LOOP_SET_FD(r4, 0x4c00, r3) executing program 4: mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./proc\x00', 0x1ff) mount(0x0, &(0x7f0000000000)='./proc\x00', &(0x7f0000000100)='proc\x00', 0x0, 0x0) mkdirat(0xffffffffffffff9c, &(0x7f0000000200)='./nfsd\x00', 0x1ff) mount(0x0, &(0x7f0000000200)='./nfsd\x00', &(0x7f0000000300)='nfsd\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000400)='./nfsd/portlist\x00', 0x2, 0x0) write(r0, &(0x7f0000000500)='tcp 2049\n', 0x9) close(r0) openat(0xffffffffffffff9c, &(0x7f0000000600)='./nfsd/threads\x00', 0x2, 0x0) r1 = openat(0xffffffffffffff9c, &(0x7f0000000800)='./proc/net/rpc/auth.unix.ip/channel\x00', 0x2, 0x0) write(r1, &(0x7f0000000900)='nfsd 127.0.0.1 2147483647 localhost\n', 0x24) r2 = openat(0xffffffffffffff9c, &(0x7f0000000c00)='./proc/net/rpc/nfsd.export/channel\x00', 0x2, 0x0) write(r2, &(0x7f0000000d00)='localhost / 2147483647 8195 0 0 0\n', 0x22) executing program 4: mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./nfsd\x00', 0x1ff) mount(0x0, &(0x7f0000000000)='./nfsd\x00', &(0x7f0000000040)='nfsd\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000100)='./nfsd/portlist\x00', 0x2, 0x0) write(r0, &(0x7f0000000140)='2049\n', 0x5) close(r0) r1 = openat(0xffffffffffffff9c, &(0x7f0000000180)='./nfsd/threads\x00', 0x2, 0x0) write(r1, &(0x7f00000001c0)='4\n', 0x2) close(r1) program crashed: KASAN: use-after-free Write in nfsd_create_serv testing program (duration=45s, {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}}): [12, 12, 8] detailed listing: executing program 0: mkdirat(0xffffffffffffff9c, &(0x7f0000000040)='./dev\x00', 0x1ff) mount(0x0, &(0x7f0000000080)='./dev\x00', &(0x7f00000000c0)='devtmpfs\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000100)='./file0\x00', 0x42, 0x1b6) ftruncate(r0, 0x1000000) ioctl$LOOP_SET_FD(0xffffffffffffffff, 0x4c00, r0) r1 = openat(0xffffffffffffff9c, &(0x7f0000000180)='./file1\x00', 0x42, 0x1b6) ftruncate(r1, 0x1000000) r2 = syz_open_dev$loop(&(0x7f0000000140), 0x1, 0x2) ioctl$LOOP_SET_FD(r2, 0x4c00, r1) r3 = openat(0xffffffffffffff9c, &(0x7f00000001c0)='./file2\x00', 0x42, 0x1b6) ftruncate(r3, 0x1000000) syz_open_dev$loop(&(0x7f0000000140), 0x2, 0x2) executing program 4: mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./proc\x00', 0x1ff) mount(0x0, &(0x7f0000000000)='./proc\x00', &(0x7f0000000100)='proc\x00', 0x0, 0x0) mkdirat(0xffffffffffffff9c, &(0x7f0000000200)='./nfsd\x00', 0x1ff) mount(0x0, &(0x7f0000000200)='./nfsd\x00', &(0x7f0000000300)='nfsd\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000400)='./nfsd/portlist\x00', 0x2, 0x0) write(r0, &(0x7f0000000500)='tcp 2049\n', 0x9) close(r0) openat(0xffffffffffffff9c, &(0x7f0000000600)='./nfsd/threads\x00', 0x2, 0x0) r1 = openat(0xffffffffffffff9c, &(0x7f0000000800)='./proc/net/rpc/auth.unix.ip/channel\x00', 0x2, 0x0) write(r1, &(0x7f0000000900)='nfsd 127.0.0.1 2147483647 localhost\n', 0x24) r2 = openat(0xffffffffffffff9c, &(0x7f0000000c00)='./proc/net/rpc/nfsd.export/channel\x00', 0x2, 0x0) write(r2, &(0x7f0000000d00)='localhost / 2147483647 8195 0 0 0\n', 0x22) executing program 4: mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./nfsd\x00', 0x1ff) mount(0x0, &(0x7f0000000000)='./nfsd\x00', &(0x7f0000000040)='nfsd\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000100)='./nfsd/portlist\x00', 0x2, 0x0) write(r0, &(0x7f0000000140)='2049\n', 0x5) close(r0) r1 = openat(0xffffffffffffff9c, &(0x7f0000000180)='./nfsd/threads\x00', 0x2, 0x0) write(r1, &(0x7f00000001c0)='4\n', 0x2) close(r1) program crashed: kernel BUG in svc_destroy testing program (duration=45s, {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}}): [11, 12, 8] detailed listing: executing program 0: mkdirat(0xffffffffffffff9c, &(0x7f0000000040)='./dev\x00', 0x1ff) mount(0x0, &(0x7f0000000080)='./dev\x00', &(0x7f00000000c0)='devtmpfs\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000100)='./file0\x00', 0x42, 0x1b6) ftruncate(r0, 0x1000000) ioctl$LOOP_SET_FD(0xffffffffffffffff, 0x4c00, r0) r1 = openat(0xffffffffffffff9c, &(0x7f0000000180)='./file1\x00', 0x42, 0x1b6) ftruncate(r1, 0x1000000) r2 = syz_open_dev$loop(&(0x7f0000000140), 0x1, 0x2) ioctl$LOOP_SET_FD(r2, 0x4c00, r1) r3 = openat(0xffffffffffffff9c, &(0x7f00000001c0)='./file2\x00', 0x42, 0x1b6) ftruncate(r3, 0x1000000) executing program 4: mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./proc\x00', 0x1ff) mount(0x0, &(0x7f0000000000)='./proc\x00', &(0x7f0000000100)='proc\x00', 0x0, 0x0) mkdirat(0xffffffffffffff9c, &(0x7f0000000200)='./nfsd\x00', 0x1ff) mount(0x0, &(0x7f0000000200)='./nfsd\x00', &(0x7f0000000300)='nfsd\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000400)='./nfsd/portlist\x00', 0x2, 0x0) write(r0, &(0x7f0000000500)='tcp 2049\n', 0x9) close(r0) openat(0xffffffffffffff9c, &(0x7f0000000600)='./nfsd/threads\x00', 0x2, 0x0) r1 = openat(0xffffffffffffff9c, &(0x7f0000000800)='./proc/net/rpc/auth.unix.ip/channel\x00', 0x2, 0x0) write(r1, &(0x7f0000000900)='nfsd 127.0.0.1 2147483647 localhost\n', 0x24) r2 = openat(0xffffffffffffff9c, &(0x7f0000000c00)='./proc/net/rpc/nfsd.export/channel\x00', 0x2, 0x0) write(r2, &(0x7f0000000d00)='localhost / 2147483647 8195 0 0 0\n', 0x22) executing program 4: mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./nfsd\x00', 0x1ff) mount(0x0, &(0x7f0000000000)='./nfsd\x00', &(0x7f0000000040)='nfsd\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000100)='./nfsd/portlist\x00', 0x2, 0x0) write(r0, &(0x7f0000000140)='2049\n', 0x5) close(r0) r1 = openat(0xffffffffffffff9c, &(0x7f0000000180)='./nfsd/threads\x00', 0x2, 0x0) write(r1, &(0x7f00000001c0)='4\n', 0x2) close(r1) program crashed: kernel BUG in svc_destroy testing program (duration=45s, {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}}): [10, 12, 8] detailed listing: executing program 0: mkdirat(0xffffffffffffff9c, &(0x7f0000000040)='./dev\x00', 0x1ff) mount(0x0, &(0x7f0000000080)='./dev\x00', &(0x7f00000000c0)='devtmpfs\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000100)='./file0\x00', 0x42, 0x1b6) ftruncate(r0, 0x1000000) ioctl$LOOP_SET_FD(0xffffffffffffffff, 0x4c00, r0) r1 = openat(0xffffffffffffff9c, &(0x7f0000000180)='./file1\x00', 0x42, 0x1b6) ftruncate(r1, 0x1000000) r2 = syz_open_dev$loop(&(0x7f0000000140), 0x1, 0x2) ioctl$LOOP_SET_FD(r2, 0x4c00, r1) openat(0xffffffffffffff9c, &(0x7f00000001c0)='./file2\x00', 0x42, 0x1b6) executing program 4: mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./proc\x00', 0x1ff) mount(0x0, &(0x7f0000000000)='./proc\x00', &(0x7f0000000100)='proc\x00', 0x0, 0x0) mkdirat(0xffffffffffffff9c, &(0x7f0000000200)='./nfsd\x00', 0x1ff) mount(0x0, &(0x7f0000000200)='./nfsd\x00', &(0x7f0000000300)='nfsd\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000400)='./nfsd/portlist\x00', 0x2, 0x0) write(r0, &(0x7f0000000500)='tcp 2049\n', 0x9) close(r0) openat(0xffffffffffffff9c, &(0x7f0000000600)='./nfsd/threads\x00', 0x2, 0x0) r1 = openat(0xffffffffffffff9c, &(0x7f0000000800)='./proc/net/rpc/auth.unix.ip/channel\x00', 0x2, 0x0) write(r1, &(0x7f0000000900)='nfsd 127.0.0.1 2147483647 localhost\n', 0x24) r2 = openat(0xffffffffffffff9c, &(0x7f0000000c00)='./proc/net/rpc/nfsd.export/channel\x00', 0x2, 0x0) write(r2, &(0x7f0000000d00)='localhost / 2147483647 8195 0 0 0\n', 0x22) executing program 4: mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./nfsd\x00', 0x1ff) mount(0x0, &(0x7f0000000000)='./nfsd\x00', &(0x7f0000000040)='nfsd\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000100)='./nfsd/portlist\x00', 0x2, 0x0) write(r0, &(0x7f0000000140)='2049\n', 0x5) close(r0) r1 = openat(0xffffffffffffff9c, &(0x7f0000000180)='./nfsd/threads\x00', 0x2, 0x0) write(r1, &(0x7f00000001c0)='4\n', 0x2) close(r1) program crashed: KASAN: use-after-free Write in nfsd_create_serv testing program (duration=45s, {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}}): [9, 12, 8] detailed listing: executing program 0: mkdirat(0xffffffffffffff9c, &(0x7f0000000040)='./dev\x00', 0x1ff) mount(0x0, &(0x7f0000000080)='./dev\x00', &(0x7f00000000c0)='devtmpfs\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000100)='./file0\x00', 0x42, 0x1b6) ftruncate(r0, 0x1000000) ioctl$LOOP_SET_FD(0xffffffffffffffff, 0x4c00, r0) r1 = openat(0xffffffffffffff9c, &(0x7f0000000180)='./file1\x00', 0x42, 0x1b6) ftruncate(r1, 0x1000000) r2 = syz_open_dev$loop(&(0x7f0000000140), 0x1, 0x2) ioctl$LOOP_SET_FD(r2, 0x4c00, r1) executing program 4: mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./proc\x00', 0x1ff) mount(0x0, &(0x7f0000000000)='./proc\x00', &(0x7f0000000100)='proc\x00', 0x0, 0x0) mkdirat(0xffffffffffffff9c, &(0x7f0000000200)='./nfsd\x00', 0x1ff) mount(0x0, &(0x7f0000000200)='./nfsd\x00', &(0x7f0000000300)='nfsd\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000400)='./nfsd/portlist\x00', 0x2, 0x0) write(r0, &(0x7f0000000500)='tcp 2049\n', 0x9) close(r0) openat(0xffffffffffffff9c, &(0x7f0000000600)='./nfsd/threads\x00', 0x2, 0x0) r1 = openat(0xffffffffffffff9c, &(0x7f0000000800)='./proc/net/rpc/auth.unix.ip/channel\x00', 0x2, 0x0) write(r1, &(0x7f0000000900)='nfsd 127.0.0.1 2147483647 localhost\n', 0x24) r2 = openat(0xffffffffffffff9c, &(0x7f0000000c00)='./proc/net/rpc/nfsd.export/channel\x00', 0x2, 0x0) write(r2, &(0x7f0000000d00)='localhost / 2147483647 8195 0 0 0\n', 0x22) executing program 4: mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./nfsd\x00', 0x1ff) mount(0x0, &(0x7f0000000000)='./nfsd\x00', &(0x7f0000000040)='nfsd\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000100)='./nfsd/portlist\x00', 0x2, 0x0) write(r0, &(0x7f0000000140)='2049\n', 0x5) close(r0) r1 = openat(0xffffffffffffff9c, &(0x7f0000000180)='./nfsd/threads\x00', 0x2, 0x0) write(r1, &(0x7f00000001c0)='4\n', 0x2) close(r1) program crashed: KASAN: use-after-free Write in nfsd_create_serv testing program (duration=45s, {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}}): [8, 12, 8] detailed listing: executing program 0: mkdirat(0xffffffffffffff9c, &(0x7f0000000040)='./dev\x00', 0x1ff) mount(0x0, &(0x7f0000000080)='./dev\x00', &(0x7f00000000c0)='devtmpfs\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000100)='./file0\x00', 0x42, 0x1b6) ftruncate(r0, 0x1000000) ioctl$LOOP_SET_FD(0xffffffffffffffff, 0x4c00, r0) r1 = openat(0xffffffffffffff9c, &(0x7f0000000180)='./file1\x00', 0x42, 0x1b6) ftruncate(r1, 0x1000000) syz_open_dev$loop(&(0x7f0000000140), 0x1, 0x2) executing program 4: mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./proc\x00', 0x1ff) mount(0x0, &(0x7f0000000000)='./proc\x00', &(0x7f0000000100)='proc\x00', 0x0, 0x0) mkdirat(0xffffffffffffff9c, &(0x7f0000000200)='./nfsd\x00', 0x1ff) mount(0x0, &(0x7f0000000200)='./nfsd\x00', &(0x7f0000000300)='nfsd\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000400)='./nfsd/portlist\x00', 0x2, 0x0) write(r0, &(0x7f0000000500)='tcp 2049\n', 0x9) close(r0) openat(0xffffffffffffff9c, &(0x7f0000000600)='./nfsd/threads\x00', 0x2, 0x0) r1 = openat(0xffffffffffffff9c, &(0x7f0000000800)='./proc/net/rpc/auth.unix.ip/channel\x00', 0x2, 0x0) write(r1, &(0x7f0000000900)='nfsd 127.0.0.1 2147483647 localhost\n', 0x24) r2 = openat(0xffffffffffffff9c, &(0x7f0000000c00)='./proc/net/rpc/nfsd.export/channel\x00', 0x2, 0x0) write(r2, &(0x7f0000000d00)='localhost / 2147483647 8195 0 0 0\n', 0x22) executing program 4: mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./nfsd\x00', 0x1ff) mount(0x0, &(0x7f0000000000)='./nfsd\x00', &(0x7f0000000040)='nfsd\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000100)='./nfsd/portlist\x00', 0x2, 0x0) write(r0, &(0x7f0000000140)='2049\n', 0x5) close(r0) r1 = openat(0xffffffffffffff9c, &(0x7f0000000180)='./nfsd/threads\x00', 0x2, 0x0) write(r1, &(0x7f00000001c0)='4\n', 0x2) close(r1) program crashed: kernel BUG in svc_destroy testing program (duration=45s, {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}}): [7, 12, 8] detailed listing: executing program 0: mkdirat(0xffffffffffffff9c, &(0x7f0000000040)='./dev\x00', 0x1ff) mount(0x0, &(0x7f0000000080)='./dev\x00', &(0x7f00000000c0)='devtmpfs\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000100)='./file0\x00', 0x42, 0x1b6) ftruncate(r0, 0x1000000) ioctl$LOOP_SET_FD(0xffffffffffffffff, 0x4c00, r0) r1 = openat(0xffffffffffffff9c, &(0x7f0000000180)='./file1\x00', 0x42, 0x1b6) ftruncate(r1, 0x1000000) executing program 4: mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./proc\x00', 0x1ff) mount(0x0, &(0x7f0000000000)='./proc\x00', &(0x7f0000000100)='proc\x00', 0x0, 0x0) mkdirat(0xffffffffffffff9c, &(0x7f0000000200)='./nfsd\x00', 0x1ff) mount(0x0, &(0x7f0000000200)='./nfsd\x00', &(0x7f0000000300)='nfsd\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000400)='./nfsd/portlist\x00', 0x2, 0x0) write(r0, &(0x7f0000000500)='tcp 2049\n', 0x9) close(r0) openat(0xffffffffffffff9c, &(0x7f0000000600)='./nfsd/threads\x00', 0x2, 0x0) r1 = openat(0xffffffffffffff9c, &(0x7f0000000800)='./proc/net/rpc/auth.unix.ip/channel\x00', 0x2, 0x0) write(r1, &(0x7f0000000900)='nfsd 127.0.0.1 2147483647 localhost\n', 0x24) r2 = openat(0xffffffffffffff9c, &(0x7f0000000c00)='./proc/net/rpc/nfsd.export/channel\x00', 0x2, 0x0) write(r2, &(0x7f0000000d00)='localhost / 2147483647 8195 0 0 0\n', 0x22) executing program 4: mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./nfsd\x00', 0x1ff) mount(0x0, &(0x7f0000000000)='./nfsd\x00', &(0x7f0000000040)='nfsd\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000100)='./nfsd/portlist\x00', 0x2, 0x0) write(r0, &(0x7f0000000140)='2049\n', 0x5) close(r0) r1 = openat(0xffffffffffffff9c, &(0x7f0000000180)='./nfsd/threads\x00', 0x2, 0x0) write(r1, &(0x7f00000001c0)='4\n', 0x2) close(r1) program crashed: KASAN: use-after-free Write in nfsd_create_serv testing program (duration=45s, {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}}): [6, 12, 8] detailed listing: executing program 0: mkdirat(0xffffffffffffff9c, &(0x7f0000000040)='./dev\x00', 0x1ff) mount(0x0, &(0x7f0000000080)='./dev\x00', &(0x7f00000000c0)='devtmpfs\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000100)='./file0\x00', 0x42, 0x1b6) ftruncate(r0, 0x1000000) ioctl$LOOP_SET_FD(0xffffffffffffffff, 0x4c00, r0) openat(0xffffffffffffff9c, &(0x7f0000000180)='./file1\x00', 0x42, 0x1b6) executing program 4: mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./proc\x00', 0x1ff) mount(0x0, &(0x7f0000000000)='./proc\x00', &(0x7f0000000100)='proc\x00', 0x0, 0x0) mkdirat(0xffffffffffffff9c, &(0x7f0000000200)='./nfsd\x00', 0x1ff) mount(0x0, &(0x7f0000000200)='./nfsd\x00', &(0x7f0000000300)='nfsd\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000400)='./nfsd/portlist\x00', 0x2, 0x0) write(r0, &(0x7f0000000500)='tcp 2049\n', 0x9) close(r0) openat(0xffffffffffffff9c, &(0x7f0000000600)='./nfsd/threads\x00', 0x2, 0x0) r1 = openat(0xffffffffffffff9c, &(0x7f0000000800)='./proc/net/rpc/auth.unix.ip/channel\x00', 0x2, 0x0) write(r1, &(0x7f0000000900)='nfsd 127.0.0.1 2147483647 localhost\n', 0x24) r2 = openat(0xffffffffffffff9c, &(0x7f0000000c00)='./proc/net/rpc/nfsd.export/channel\x00', 0x2, 0x0) write(r2, &(0x7f0000000d00)='localhost / 2147483647 8195 0 0 0\n', 0x22) executing program 4: mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./nfsd\x00', 0x1ff) mount(0x0, &(0x7f0000000000)='./nfsd\x00', &(0x7f0000000040)='nfsd\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000100)='./nfsd/portlist\x00', 0x2, 0x0) write(r0, &(0x7f0000000140)='2049\n', 0x5) close(r0) r1 = openat(0xffffffffffffff9c, &(0x7f0000000180)='./nfsd/threads\x00', 0x2, 0x0) write(r1, &(0x7f00000001c0)='4\n', 0x2) close(r1) program crashed: KASAN: use-after-free Write in nfsd_create_serv testing program (duration=45s, {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}}): [5, 12, 8] detailed listing: executing program 0: mkdirat(0xffffffffffffff9c, &(0x7f0000000040)='./dev\x00', 0x1ff) mount(0x0, &(0x7f0000000080)='./dev\x00', &(0x7f00000000c0)='devtmpfs\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000100)='./file0\x00', 0x42, 0x1b6) ftruncate(r0, 0x1000000) ioctl$LOOP_SET_FD(0xffffffffffffffff, 0x4c00, r0) executing program 4: mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./proc\x00', 0x1ff) mount(0x0, &(0x7f0000000000)='./proc\x00', &(0x7f0000000100)='proc\x00', 0x0, 0x0) mkdirat(0xffffffffffffff9c, &(0x7f0000000200)='./nfsd\x00', 0x1ff) mount(0x0, &(0x7f0000000200)='./nfsd\x00', &(0x7f0000000300)='nfsd\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000400)='./nfsd/portlist\x00', 0x2, 0x0) write(r0, &(0x7f0000000500)='tcp 2049\n', 0x9) close(r0) openat(0xffffffffffffff9c, &(0x7f0000000600)='./nfsd/threads\x00', 0x2, 0x0) r1 = openat(0xffffffffffffff9c, &(0x7f0000000800)='./proc/net/rpc/auth.unix.ip/channel\x00', 0x2, 0x0) write(r1, &(0x7f0000000900)='nfsd 127.0.0.1 2147483647 localhost\n', 0x24) r2 = openat(0xffffffffffffff9c, &(0x7f0000000c00)='./proc/net/rpc/nfsd.export/channel\x00', 0x2, 0x0) write(r2, &(0x7f0000000d00)='localhost / 2147483647 8195 0 0 0\n', 0x22) executing program 4: mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./nfsd\x00', 0x1ff) mount(0x0, &(0x7f0000000000)='./nfsd\x00', &(0x7f0000000040)='nfsd\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000100)='./nfsd/portlist\x00', 0x2, 0x0) write(r0, &(0x7f0000000140)='2049\n', 0x5) close(r0) r1 = openat(0xffffffffffffff9c, &(0x7f0000000180)='./nfsd/threads\x00', 0x2, 0x0) write(r1, &(0x7f00000001c0)='4\n', 0x2) close(r1) program crashed: kernel BUG in svc_destroy testing program (duration=45s, {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}}): [4, 12, 8] detailed listing: executing program 0: mkdirat(0xffffffffffffff9c, &(0x7f0000000040)='./dev\x00', 0x1ff) mount(0x0, &(0x7f0000000080)='./dev\x00', &(0x7f00000000c0)='devtmpfs\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000100)='./file0\x00', 0x42, 0x1b6) ftruncate(r0, 0x1000000) executing program 4: mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./proc\x00', 0x1ff) mount(0x0, &(0x7f0000000000)='./proc\x00', &(0x7f0000000100)='proc\x00', 0x0, 0x0) mkdirat(0xffffffffffffff9c, &(0x7f0000000200)='./nfsd\x00', 0x1ff) mount(0x0, &(0x7f0000000200)='./nfsd\x00', &(0x7f0000000300)='nfsd\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000400)='./nfsd/portlist\x00', 0x2, 0x0) write(r0, &(0x7f0000000500)='tcp 2049\n', 0x9) close(r0) openat(0xffffffffffffff9c, &(0x7f0000000600)='./nfsd/threads\x00', 0x2, 0x0) r1 = openat(0xffffffffffffff9c, &(0x7f0000000800)='./proc/net/rpc/auth.unix.ip/channel\x00', 0x2, 0x0) write(r1, &(0x7f0000000900)='nfsd 127.0.0.1 2147483647 localhost\n', 0x24) r2 = openat(0xffffffffffffff9c, &(0x7f0000000c00)='./proc/net/rpc/nfsd.export/channel\x00', 0x2, 0x0) write(r2, &(0x7f0000000d00)='localhost / 2147483647 8195 0 0 0\n', 0x22) executing program 4: mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./nfsd\x00', 0x1ff) mount(0x0, &(0x7f0000000000)='./nfsd\x00', &(0x7f0000000040)='nfsd\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000100)='./nfsd/portlist\x00', 0x2, 0x0) write(r0, &(0x7f0000000140)='2049\n', 0x5) close(r0) r1 = openat(0xffffffffffffff9c, &(0x7f0000000180)='./nfsd/threads\x00', 0x2, 0x0) write(r1, &(0x7f00000001c0)='4\n', 0x2) close(r1) program crashed: kernel BUG in svc_destroy testing program (duration=45s, {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}}): [3, 12, 8] detailed listing: executing program 0: mkdirat(0xffffffffffffff9c, &(0x7f0000000040)='./dev\x00', 0x1ff) mount(0x0, &(0x7f0000000080)='./dev\x00', &(0x7f00000000c0)='devtmpfs\x00', 0x0, 0x0) openat(0xffffffffffffff9c, &(0x7f0000000100)='./file0\x00', 0x42, 0x1b6) executing program 4: mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./proc\x00', 0x1ff) mount(0x0, &(0x7f0000000000)='./proc\x00', &(0x7f0000000100)='proc\x00', 0x0, 0x0) mkdirat(0xffffffffffffff9c, &(0x7f0000000200)='./nfsd\x00', 0x1ff) mount(0x0, &(0x7f0000000200)='./nfsd\x00', &(0x7f0000000300)='nfsd\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000400)='./nfsd/portlist\x00', 0x2, 0x0) write(r0, &(0x7f0000000500)='tcp 2049\n', 0x9) close(r0) openat(0xffffffffffffff9c, &(0x7f0000000600)='./nfsd/threads\x00', 0x2, 0x0) r1 = openat(0xffffffffffffff9c, &(0x7f0000000800)='./proc/net/rpc/auth.unix.ip/channel\x00', 0x2, 0x0) write(r1, &(0x7f0000000900)='nfsd 127.0.0.1 2147483647 localhost\n', 0x24) r2 = openat(0xffffffffffffff9c, &(0x7f0000000c00)='./proc/net/rpc/nfsd.export/channel\x00', 0x2, 0x0) write(r2, &(0x7f0000000d00)='localhost / 2147483647 8195 0 0 0\n', 0x22) executing program 4: mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./nfsd\x00', 0x1ff) mount(0x0, &(0x7f0000000000)='./nfsd\x00', &(0x7f0000000040)='nfsd\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000100)='./nfsd/portlist\x00', 0x2, 0x0) write(r0, &(0x7f0000000140)='2049\n', 0x5) close(r0) r1 = openat(0xffffffffffffff9c, &(0x7f0000000180)='./nfsd/threads\x00', 0x2, 0x0) write(r1, &(0x7f00000001c0)='4\n', 0x2) close(r1) program crashed: KASAN: use-after-free Write in nfsd_create_serv testing program (duration=45s, {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}}): [2, 12, 8] detailed listing: executing program 0: mkdirat(0xffffffffffffff9c, &(0x7f0000000040)='./dev\x00', 0x1ff) mount(0x0, &(0x7f0000000080)='./dev\x00', &(0x7f00000000c0)='devtmpfs\x00', 0x0, 0x0) executing program 4: mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./proc\x00', 0x1ff) mount(0x0, &(0x7f0000000000)='./proc\x00', &(0x7f0000000100)='proc\x00', 0x0, 0x0) mkdirat(0xffffffffffffff9c, &(0x7f0000000200)='./nfsd\x00', 0x1ff) mount(0x0, &(0x7f0000000200)='./nfsd\x00', &(0x7f0000000300)='nfsd\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000400)='./nfsd/portlist\x00', 0x2, 0x0) write(r0, &(0x7f0000000500)='tcp 2049\n', 0x9) close(r0) openat(0xffffffffffffff9c, &(0x7f0000000600)='./nfsd/threads\x00', 0x2, 0x0) r1 = openat(0xffffffffffffff9c, &(0x7f0000000800)='./proc/net/rpc/auth.unix.ip/channel\x00', 0x2, 0x0) write(r1, &(0x7f0000000900)='nfsd 127.0.0.1 2147483647 localhost\n', 0x24) r2 = openat(0xffffffffffffff9c, &(0x7f0000000c00)='./proc/net/rpc/nfsd.export/channel\x00', 0x2, 0x0) write(r2, &(0x7f0000000d00)='localhost / 2147483647 8195 0 0 0\n', 0x22) executing program 4: mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./nfsd\x00', 0x1ff) mount(0x0, &(0x7f0000000000)='./nfsd\x00', &(0x7f0000000040)='nfsd\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000100)='./nfsd/portlist\x00', 0x2, 0x0) write(r0, &(0x7f0000000140)='2049\n', 0x5) close(r0) r1 = openat(0xffffffffffffff9c, &(0x7f0000000180)='./nfsd/threads\x00', 0x2, 0x0) write(r1, &(0x7f00000001c0)='4\n', 0x2) close(r1) program crashed: KASAN: use-after-free Write in nfsd_create_serv testing program (duration=45s, {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}}): [1, 12, 8] detailed listing: executing program 0: mkdirat(0xffffffffffffff9c, &(0x7f0000000040)='./dev\x00', 0x1ff) executing program 4: mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./proc\x00', 0x1ff) mount(0x0, &(0x7f0000000000)='./proc\x00', &(0x7f0000000100)='proc\x00', 0x0, 0x0) mkdirat(0xffffffffffffff9c, &(0x7f0000000200)='./nfsd\x00', 0x1ff) mount(0x0, &(0x7f0000000200)='./nfsd\x00', &(0x7f0000000300)='nfsd\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000400)='./nfsd/portlist\x00', 0x2, 0x0) write(r0, &(0x7f0000000500)='tcp 2049\n', 0x9) close(r0) openat(0xffffffffffffff9c, &(0x7f0000000600)='./nfsd/threads\x00', 0x2, 0x0) r1 = openat(0xffffffffffffff9c, &(0x7f0000000800)='./proc/net/rpc/auth.unix.ip/channel\x00', 0x2, 0x0) write(r1, &(0x7f0000000900)='nfsd 127.0.0.1 2147483647 localhost\n', 0x24) r2 = openat(0xffffffffffffff9c, &(0x7f0000000c00)='./proc/net/rpc/nfsd.export/channel\x00', 0x2, 0x0) write(r2, &(0x7f0000000d00)='localhost / 2147483647 8195 0 0 0\n', 0x22) executing program 4: mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./nfsd\x00', 0x1ff) mount(0x0, &(0x7f0000000000)='./nfsd\x00', &(0x7f0000000040)='nfsd\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000100)='./nfsd/portlist\x00', 0x2, 0x0) write(r0, &(0x7f0000000140)='2049\n', 0x5) close(r0) r1 = openat(0xffffffffffffff9c, &(0x7f0000000180)='./nfsd/threads\x00', 0x2, 0x0) write(r1, &(0x7f00000001c0)='4\n', 0x2) close(r1) program crashed: KASAN: use-after-free Write in nfsd_create_serv testing program (duration=45s, {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}}): [0, 12, 8] detailed listing: executing program 0: executing program 4: mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./proc\x00', 0x1ff) mount(0x0, &(0x7f0000000000)='./proc\x00', &(0x7f0000000100)='proc\x00', 0x0, 0x0) mkdirat(0xffffffffffffff9c, &(0x7f0000000200)='./nfsd\x00', 0x1ff) mount(0x0, &(0x7f0000000200)='./nfsd\x00', &(0x7f0000000300)='nfsd\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000400)='./nfsd/portlist\x00', 0x2, 0x0) write(r0, &(0x7f0000000500)='tcp 2049\n', 0x9) close(r0) openat(0xffffffffffffff9c, &(0x7f0000000600)='./nfsd/threads\x00', 0x2, 0x0) r1 = openat(0xffffffffffffff9c, &(0x7f0000000800)='./proc/net/rpc/auth.unix.ip/channel\x00', 0x2, 0x0) write(r1, &(0x7f0000000900)='nfsd 127.0.0.1 2147483647 localhost\n', 0x24) r2 = openat(0xffffffffffffff9c, &(0x7f0000000c00)='./proc/net/rpc/nfsd.export/channel\x00', 0x2, 0x0) write(r2, &(0x7f0000000d00)='localhost / 2147483647 8195 0 0 0\n', 0x22) executing program 4: mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./nfsd\x00', 0x1ff) mount(0x0, &(0x7f0000000000)='./nfsd\x00', &(0x7f0000000040)='nfsd\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000100)='./nfsd/portlist\x00', 0x2, 0x0) write(r0, &(0x7f0000000140)='2049\n', 0x5) close(r0) r1 = openat(0xffffffffffffff9c, &(0x7f0000000180)='./nfsd/threads\x00', 0x2, 0x0) write(r1, &(0x7f00000001c0)='4\n', 0x2) close(r1) program crashed: KASAN: use-after-free Write in nfsd_create_serv minimized 15 calls -> 0 calls minimizing program #1 before concatenation testing program (duration=45s, {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}}): [0, 11, 8] detailed listing: executing program 3: executing program 0: mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./proc\x00', 0x1ff) mount(0x0, &(0x7f0000000000)='./proc\x00', &(0x7f0000000100)='proc\x00', 0x0, 0x0) mkdirat(0xffffffffffffff9c, &(0x7f0000000200)='./nfsd\x00', 0x1ff) mount(0x0, &(0x7f0000000200)='./nfsd\x00', &(0x7f0000000300)='nfsd\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000400)='./nfsd/portlist\x00', 0x2, 0x0) write(r0, &(0x7f0000000500)='tcp 2049\n', 0x9) close(r0) openat(0xffffffffffffff9c, &(0x7f0000000600)='./nfsd/threads\x00', 0x2, 0x0) r1 = openat(0xffffffffffffff9c, &(0x7f0000000800)='./proc/net/rpc/auth.unix.ip/channel\x00', 0x2, 0x0) write(r1, &(0x7f0000000900)='nfsd 127.0.0.1 2147483647 localhost\n', 0x24) openat(0xffffffffffffff9c, &(0x7f0000000c00)='./proc/net/rpc/nfsd.export/channel\x00', 0x2, 0x0) executing program 4: mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./nfsd\x00', 0x1ff) mount(0x0, &(0x7f0000000000)='./nfsd\x00', &(0x7f0000000040)='nfsd\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000100)='./nfsd/portlist\x00', 0x2, 0x0) write(r0, &(0x7f0000000140)='2049\n', 0x5) close(r0) r1 = openat(0xffffffffffffff9c, &(0x7f0000000180)='./nfsd/threads\x00', 0x2, 0x0) write(r1, &(0x7f00000001c0)='4\n', 0x2) close(r1) program crashed: KASAN: use-after-free Write in nfsd_create_serv testing program (duration=45s, {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}}): [0, 10, 8] detailed listing: executing program 3: executing program 0: mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./proc\x00', 0x1ff) mount(0x0, &(0x7f0000000000)='./proc\x00', &(0x7f0000000100)='proc\x00', 0x0, 0x0) mkdirat(0xffffffffffffff9c, &(0x7f0000000200)='./nfsd\x00', 0x1ff) mount(0x0, &(0x7f0000000200)='./nfsd\x00', &(0x7f0000000300)='nfsd\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000400)='./nfsd/portlist\x00', 0x2, 0x0) write(r0, &(0x7f0000000500)='tcp 2049\n', 0x9) close(r0) openat(0xffffffffffffff9c, &(0x7f0000000600)='./nfsd/threads\x00', 0x2, 0x0) r1 = openat(0xffffffffffffff9c, &(0x7f0000000800)='./proc/net/rpc/auth.unix.ip/channel\x00', 0x2, 0x0) write(r1, &(0x7f0000000900)='nfsd 127.0.0.1 2147483647 localhost\n', 0x24) executing program 4: mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./nfsd\x00', 0x1ff) mount(0x0, &(0x7f0000000000)='./nfsd\x00', &(0x7f0000000040)='nfsd\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000100)='./nfsd/portlist\x00', 0x2, 0x0) write(r0, &(0x7f0000000140)='2049\n', 0x5) close(r0) r1 = openat(0xffffffffffffff9c, &(0x7f0000000180)='./nfsd/threads\x00', 0x2, 0x0) write(r1, &(0x7f00000001c0)='4\n', 0x2) close(r1) program crashed: kernel BUG in svc_destroy testing program (duration=45s, {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}}): [0, 9, 8] detailed listing: executing program 3: executing program 0: mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./proc\x00', 0x1ff) mount(0x0, &(0x7f0000000000)='./proc\x00', &(0x7f0000000100)='proc\x00', 0x0, 0x0) mkdirat(0xffffffffffffff9c, &(0x7f0000000200)='./nfsd\x00', 0x1ff) mount(0x0, &(0x7f0000000200)='./nfsd\x00', &(0x7f0000000300)='nfsd\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000400)='./nfsd/portlist\x00', 0x2, 0x0) write(r0, &(0x7f0000000500)='tcp 2049\n', 0x9) close(r0) openat(0xffffffffffffff9c, &(0x7f0000000600)='./nfsd/threads\x00', 0x2, 0x0) openat(0xffffffffffffff9c, &(0x7f0000000800)='./proc/net/rpc/auth.unix.ip/channel\x00', 0x2, 0x0) executing program 4: mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./nfsd\x00', 0x1ff) mount(0x0, &(0x7f0000000000)='./nfsd\x00', &(0x7f0000000040)='nfsd\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000100)='./nfsd/portlist\x00', 0x2, 0x0) write(r0, &(0x7f0000000140)='2049\n', 0x5) close(r0) r1 = openat(0xffffffffffffff9c, &(0x7f0000000180)='./nfsd/threads\x00', 0x2, 0x0) write(r1, &(0x7f00000001c0)='4\n', 0x2) close(r1) program crashed: KASAN: use-after-free Write in nfsd_create_serv testing program (duration=45s, {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}}): [0, 8, 8] detailed listing: executing program 3: executing program 0: mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./proc\x00', 0x1ff) mount(0x0, &(0x7f0000000000)='./proc\x00', &(0x7f0000000100)='proc\x00', 0x0, 0x0) mkdirat(0xffffffffffffff9c, &(0x7f0000000200)='./nfsd\x00', 0x1ff) mount(0x0, &(0x7f0000000200)='./nfsd\x00', &(0x7f0000000300)='nfsd\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000400)='./nfsd/portlist\x00', 0x2, 0x0) write(r0, &(0x7f0000000500)='tcp 2049\n', 0x9) close(r0) openat(0xffffffffffffff9c, &(0x7f0000000600)='./nfsd/threads\x00', 0x2, 0x0) executing program 4: mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./nfsd\x00', 0x1ff) mount(0x0, &(0x7f0000000000)='./nfsd\x00', &(0x7f0000000040)='nfsd\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000100)='./nfsd/portlist\x00', 0x2, 0x0) write(r0, &(0x7f0000000140)='2049\n', 0x5) close(r0) r1 = openat(0xffffffffffffff9c, &(0x7f0000000180)='./nfsd/threads\x00', 0x2, 0x0) write(r1, &(0x7f00000001c0)='4\n', 0x2) close(r1) program crashed: KASAN: use-after-free Write in nfsd_create_serv testing program (duration=45s, {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}}): [0, 7, 8] detailed listing: executing program 3: executing program 0: mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./proc\x00', 0x1ff) mount(0x0, &(0x7f0000000000)='./proc\x00', &(0x7f0000000100)='proc\x00', 0x0, 0x0) mkdirat(0xffffffffffffff9c, &(0x7f0000000200)='./nfsd\x00', 0x1ff) mount(0x0, &(0x7f0000000200)='./nfsd\x00', &(0x7f0000000300)='nfsd\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000400)='./nfsd/portlist\x00', 0x2, 0x0) write(r0, &(0x7f0000000500)='tcp 2049\n', 0x9) close(r0) executing program 4: mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./nfsd\x00', 0x1ff) mount(0x0, &(0x7f0000000000)='./nfsd\x00', &(0x7f0000000040)='nfsd\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000100)='./nfsd/portlist\x00', 0x2, 0x0) write(r0, &(0x7f0000000140)='2049\n', 0x5) close(r0) r1 = openat(0xffffffffffffff9c, &(0x7f0000000180)='./nfsd/threads\x00', 0x2, 0x0) write(r1, &(0x7f00000001c0)='4\n', 0x2) close(r1) program crashed: KASAN: use-after-free Write in nfsd_create_serv testing program (duration=45s, {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}}): [0, 6, 8] detailed listing: executing program 3: executing program 0: mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./proc\x00', 0x1ff) mount(0x0, &(0x7f0000000000)='./proc\x00', &(0x7f0000000100)='proc\x00', 0x0, 0x0) mkdirat(0xffffffffffffff9c, &(0x7f0000000200)='./nfsd\x00', 0x1ff) mount(0x0, &(0x7f0000000200)='./nfsd\x00', &(0x7f0000000300)='nfsd\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000400)='./nfsd/portlist\x00', 0x2, 0x0) write(r0, &(0x7f0000000500)='tcp 2049\n', 0x9) executing program 4: mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./nfsd\x00', 0x1ff) mount(0x0, &(0x7f0000000000)='./nfsd\x00', &(0x7f0000000040)='nfsd\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000100)='./nfsd/portlist\x00', 0x2, 0x0) write(r0, &(0x7f0000000140)='2049\n', 0x5) close(r0) r1 = openat(0xffffffffffffff9c, &(0x7f0000000180)='./nfsd/threads\x00', 0x2, 0x0) write(r1, &(0x7f00000001c0)='4\n', 0x2) close(r1) program crashed: KASAN: use-after-free Write in nfsd_create_serv testing program (duration=45s, {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}}): [0, 5, 8] detailed listing: executing program 3: executing program 0: mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./proc\x00', 0x1ff) mount(0x0, &(0x7f0000000000)='./proc\x00', &(0x7f0000000100)='proc\x00', 0x0, 0x0) mkdirat(0xffffffffffffff9c, &(0x7f0000000200)='./nfsd\x00', 0x1ff) mount(0x0, &(0x7f0000000200)='./nfsd\x00', &(0x7f0000000300)='nfsd\x00', 0x0, 0x0) openat(0xffffffffffffff9c, &(0x7f0000000400)='./nfsd/portlist\x00', 0x2, 0x0) executing program 4: mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./nfsd\x00', 0x1ff) mount(0x0, &(0x7f0000000000)='./nfsd\x00', &(0x7f0000000040)='nfsd\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000100)='./nfsd/portlist\x00', 0x2, 0x0) write(r0, &(0x7f0000000140)='2049\n', 0x5) close(r0) r1 = openat(0xffffffffffffff9c, &(0x7f0000000180)='./nfsd/threads\x00', 0x2, 0x0) write(r1, &(0x7f00000001c0)='4\n', 0x2) close(r1) program did not crash testing program (duration=45s, {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}}): [0, 5, 8] detailed listing: executing program 3: executing program 0: mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./proc\x00', 0x1ff) mount(0x0, &(0x7f0000000000)='./proc\x00', &(0x7f0000000100)='proc\x00', 0x0, 0x0) mkdirat(0xffffffffffffff9c, &(0x7f0000000200)='./nfsd\x00', 0x1ff) mount(0x0, &(0x7f0000000200)='./nfsd\x00', &(0x7f0000000300)='nfsd\x00', 0x0, 0x0) write(0xffffffffffffffff, &(0x7f0000000500)='tcp 2049\n', 0x9) executing program 4: mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./nfsd\x00', 0x1ff) mount(0x0, &(0x7f0000000000)='./nfsd\x00', &(0x7f0000000040)='nfsd\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000100)='./nfsd/portlist\x00', 0x2, 0x0) write(r0, &(0x7f0000000140)='2049\n', 0x5) close(r0) r1 = openat(0xffffffffffffff9c, &(0x7f0000000180)='./nfsd/threads\x00', 0x2, 0x0) write(r1, &(0x7f00000001c0)='4\n', 0x2) close(r1) program did not crash testing program (duration=45s, {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}}): [0, 5, 8] detailed listing: executing program 3: executing program 0: mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./proc\x00', 0x1ff) mount(0x0, &(0x7f0000000000)='./proc\x00', &(0x7f0000000100)='proc\x00', 0x0, 0x0) mkdirat(0xffffffffffffff9c, &(0x7f0000000200)='./nfsd\x00', 0x1ff) r0 = openat(0xffffffffffffff9c, &(0x7f0000000400)='./nfsd/portlist\x00', 0x2, 0x0) write(r0, &(0x7f0000000500)='tcp 2049\n', 0x9) executing program 4: mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./nfsd\x00', 0x1ff) mount(0x0, &(0x7f0000000000)='./nfsd\x00', &(0x7f0000000040)='nfsd\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000100)='./nfsd/portlist\x00', 0x2, 0x0) write(r0, &(0x7f0000000140)='2049\n', 0x5) close(r0) r1 = openat(0xffffffffffffff9c, &(0x7f0000000180)='./nfsd/threads\x00', 0x2, 0x0) write(r1, &(0x7f00000001c0)='4\n', 0x2) close(r1) program did not crash testing program (duration=45s, {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}}): [0, 5, 8] detailed listing: executing program 3: executing program 0: mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./proc\x00', 0x1ff) mount(0x0, &(0x7f0000000000)='./proc\x00', &(0x7f0000000100)='proc\x00', 0x0, 0x0) mount(0x0, &(0x7f0000000200)='./nfsd\x00', &(0x7f0000000300)='nfsd\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000400)='./nfsd/portlist\x00', 0x2, 0x0) write(r0, &(0x7f0000000500)='tcp 2049\n', 0x9) executing program 4: mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./nfsd\x00', 0x1ff) mount(0x0, &(0x7f0000000000)='./nfsd\x00', &(0x7f0000000040)='nfsd\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000100)='./nfsd/portlist\x00', 0x2, 0x0) write(r0, &(0x7f0000000140)='2049\n', 0x5) close(r0) r1 = openat(0xffffffffffffff9c, &(0x7f0000000180)='./nfsd/threads\x00', 0x2, 0x0) write(r1, &(0x7f00000001c0)='4\n', 0x2) close(r1) program did not crash testing program (duration=45s, {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}}): [0, 5, 8] detailed listing: executing program 3: executing program 0: mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./proc\x00', 0x1ff) mkdirat(0xffffffffffffff9c, &(0x7f0000000200)='./nfsd\x00', 0x1ff) mount(0x0, &(0x7f0000000200)='./nfsd\x00', &(0x7f0000000300)='nfsd\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000400)='./nfsd/portlist\x00', 0x2, 0x0) write(r0, &(0x7f0000000500)='tcp 2049\n', 0x9) executing program 4: mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./nfsd\x00', 0x1ff) mount(0x0, &(0x7f0000000000)='./nfsd\x00', &(0x7f0000000040)='nfsd\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000100)='./nfsd/portlist\x00', 0x2, 0x0) write(r0, &(0x7f0000000140)='2049\n', 0x5) close(r0) r1 = openat(0xffffffffffffff9c, &(0x7f0000000180)='./nfsd/threads\x00', 0x2, 0x0) write(r1, &(0x7f00000001c0)='4\n', 0x2) close(r1) program crashed: KASAN: use-after-free Write in nfsd_create_serv testing program (duration=45s, {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}}): [0, 4, 8] detailed listing: executing program 3: executing program 0: mkdirat(0xffffffffffffff9c, &(0x7f0000000200)='./nfsd\x00', 0x1ff) mount(0x0, &(0x7f0000000200)='./nfsd\x00', &(0x7f0000000300)='nfsd\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000400)='./nfsd/portlist\x00', 0x2, 0x0) write(r0, &(0x7f0000000500)='tcp 2049\n', 0x9) executing program 4: mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./nfsd\x00', 0x1ff) mount(0x0, &(0x7f0000000000)='./nfsd\x00', &(0x7f0000000040)='nfsd\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000100)='./nfsd/portlist\x00', 0x2, 0x0) write(r0, &(0x7f0000000140)='2049\n', 0x5) close(r0) r1 = openat(0xffffffffffffff9c, &(0x7f0000000180)='./nfsd/threads\x00', 0x2, 0x0) write(r1, &(0x7f00000001c0)='4\n', 0x2) close(r1) program crashed: KASAN: use-after-free Write in nfsd_create_serv minimized 12 calls -> 4 calls minimizing program #2 before concatenation testing program (duration=45s, {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}}): [0, 4, 7] detailed listing: executing program 3: executing program 4: mkdirat(0xffffffffffffff9c, &(0x7f0000000200)='./nfsd\x00', 0x1ff) mount(0x0, &(0x7f0000000200)='./nfsd\x00', &(0x7f0000000300)='nfsd\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000400)='./nfsd/portlist\x00', 0x2, 0x0) write(r0, &(0x7f0000000500)='tcp 2049\n', 0x9) executing program 0: mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./nfsd\x00', 0x1ff) mount(0x0, &(0x7f0000000000)='./nfsd\x00', &(0x7f0000000040)='nfsd\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000100)='./nfsd/portlist\x00', 0x2, 0x0) write(r0, &(0x7f0000000140)='2049\n', 0x5) close(r0) r1 = openat(0xffffffffffffff9c, &(0x7f0000000180)='./nfsd/threads\x00', 0x2, 0x0) write(r1, &(0x7f00000001c0)='4\n', 0x2) program crashed: KASAN: use-after-free Write in nfsd_create_serv testing program (duration=45s, {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}}): [0, 4, 6] detailed listing: executing program 3: executing program 4: mkdirat(0xffffffffffffff9c, &(0x7f0000000200)='./nfsd\x00', 0x1ff) mount(0x0, &(0x7f0000000200)='./nfsd\x00', &(0x7f0000000300)='nfsd\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000400)='./nfsd/portlist\x00', 0x2, 0x0) write(r0, &(0x7f0000000500)='tcp 2049\n', 0x9) executing program 0: mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./nfsd\x00', 0x1ff) mount(0x0, &(0x7f0000000000)='./nfsd\x00', &(0x7f0000000040)='nfsd\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000100)='./nfsd/portlist\x00', 0x2, 0x0) write(r0, &(0x7f0000000140)='2049\n', 0x5) close(r0) openat(0xffffffffffffff9c, &(0x7f0000000180)='./nfsd/threads\x00', 0x2, 0x0) program crashed: KASAN: use-after-free Write in nfsd_shutdown_threads testing program (duration=45s, {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}}): [0, 4, 5] detailed listing: executing program 3: executing program 4: mkdirat(0xffffffffffffff9c, &(0x7f0000000200)='./nfsd\x00', 0x1ff) mount(0x0, &(0x7f0000000200)='./nfsd\x00', &(0x7f0000000300)='nfsd\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000400)='./nfsd/portlist\x00', 0x2, 0x0) write(r0, &(0x7f0000000500)='tcp 2049\n', 0x9) executing program 0: mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./nfsd\x00', 0x1ff) mount(0x0, &(0x7f0000000000)='./nfsd\x00', &(0x7f0000000040)='nfsd\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000100)='./nfsd/portlist\x00', 0x2, 0x0) write(r0, &(0x7f0000000140)='2049\n', 0x5) close(r0) program crashed: KASAN: use-after-free Write in nfsd_shutdown_threads testing program (duration=45s, {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}}): [0, 4, 4] detailed listing: executing program 3: executing program 4: mkdirat(0xffffffffffffff9c, &(0x7f0000000200)='./nfsd\x00', 0x1ff) mount(0x0, &(0x7f0000000200)='./nfsd\x00', &(0x7f0000000300)='nfsd\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000400)='./nfsd/portlist\x00', 0x2, 0x0) write(r0, &(0x7f0000000500)='tcp 2049\n', 0x9) executing program 0: mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./nfsd\x00', 0x1ff) mount(0x0, &(0x7f0000000000)='./nfsd\x00', &(0x7f0000000040)='nfsd\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000100)='./nfsd/portlist\x00', 0x2, 0x0) write(r0, &(0x7f0000000140)='2049\n', 0x5) program crashed: kernel BUG in svc_destroy testing program (duration=45s, {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}}): [0, 4, 3] detailed listing: executing program 3: executing program 4: mkdirat(0xffffffffffffff9c, &(0x7f0000000200)='./nfsd\x00', 0x1ff) mount(0x0, &(0x7f0000000200)='./nfsd\x00', &(0x7f0000000300)='nfsd\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000400)='./nfsd/portlist\x00', 0x2, 0x0) write(r0, &(0x7f0000000500)='tcp 2049\n', 0x9) executing program 0: mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./nfsd\x00', 0x1ff) mount(0x0, &(0x7f0000000000)='./nfsd\x00', &(0x7f0000000040)='nfsd\x00', 0x0, 0x0) openat(0xffffffffffffff9c, &(0x7f0000000100)='./nfsd/portlist\x00', 0x2, 0x0) program crashed: kernel BUG in svc_destroy testing program (duration=45s, {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}}): [0, 4, 2] detailed listing: executing program 3: executing program 4: mkdirat(0xffffffffffffff9c, &(0x7f0000000200)='./nfsd\x00', 0x1ff) mount(0x0, &(0x7f0000000200)='./nfsd\x00', &(0x7f0000000300)='nfsd\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000400)='./nfsd/portlist\x00', 0x2, 0x0) write(r0, &(0x7f0000000500)='tcp 2049\n', 0x9) executing program 0: mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./nfsd\x00', 0x1ff) mount(0x0, &(0x7f0000000000)='./nfsd\x00', &(0x7f0000000040)='nfsd\x00', 0x0, 0x0) program crashed: kernel BUG in svc_destroy testing program (duration=45s, {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}}): [0, 4, 1] detailed listing: executing program 3: executing program 4: mkdirat(0xffffffffffffff9c, &(0x7f0000000200)='./nfsd\x00', 0x1ff) mount(0x0, &(0x7f0000000200)='./nfsd\x00', &(0x7f0000000300)='nfsd\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000400)='./nfsd/portlist\x00', 0x2, 0x0) write(r0, &(0x7f0000000500)='tcp 2049\n', 0x9) executing program 0: mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./nfsd\x00', 0x1ff) program crashed: kernel BUG in svc_destroy testing program (duration=45s, {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}}): [0, 4, 0] detailed listing: executing program 3: executing program 4: mkdirat(0xffffffffffffff9c, &(0x7f0000000200)='./nfsd\x00', 0x1ff) mount(0x0, &(0x7f0000000200)='./nfsd\x00', &(0x7f0000000300)='nfsd\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000400)='./nfsd/portlist\x00', 0x2, 0x0) write(r0, &(0x7f0000000500)='tcp 2049\n', 0x9) executing program 0: program crashed: kernel BUG in svc_destroy minimized 8 calls -> 0 calls testing program (duration=45s, {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, &(0x7f0000000200)='./nfsd\x00', 0x1ff) mount(0x0, &(0x7f0000000200)='./nfsd\x00', &(0x7f0000000300)='nfsd\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000400)='./nfsd/portlist\x00', 0x2, 0x0) write(r0, &(0x7f0000000500)='tcp 2049\n', 0x9) program crashed: kernel BUG in svc_destroy bisect: concatenation succeeded found reproducer with 4 syscalls minimizing guilty program testing program (duration=45s, {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, &(0x7f0000000200)='./nfsd\x00', 0x1ff) mount(0x0, &(0x7f0000000200)='./nfsd\x00', &(0x7f0000000300)='nfsd\x00', 0x0, 0x0) openat(0xffffffffffffff9c, &(0x7f0000000400)='./nfsd/portlist\x00', 0x2, 0x0) program did not crash testing program (duration=45s, {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, &(0x7f0000000200)='./nfsd\x00', 0x1ff) mount(0x0, &(0x7f0000000200)='./nfsd\x00', &(0x7f0000000300)='nfsd\x00', 0x0, 0x0) write(0xffffffffffffffff, &(0x7f0000000500)='tcp 2049\n', 0x9) program did not crash testing program (duration=45s, {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, &(0x7f0000000200)='./nfsd\x00', 0x1ff) r0 = openat(0xffffffffffffff9c, &(0x7f0000000400)='./nfsd/portlist\x00', 0x2, 0x0) write(r0, &(0x7f0000000500)='tcp 2049\n', 0x9) program did not crash testing program (duration=45s, {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, &(0x7f0000000200)='./nfsd\x00', &(0x7f0000000300)='nfsd\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000400)='./nfsd/portlist\x00', 0x2, 0x0) write(r0, &(0x7f0000000500)='tcp 2049\n', 0x9) program did not crash testing program (duration=45s, {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, &(0x7f0000000200)='./nfsd\x00', &(0x7f0000000300)='nfsd\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000400)='./nfsd/portlist\x00', 0x2, 0x0) write(r0, &(0x7f0000000500)='tcp 2049\n', 0x9) program did not crash testing program (duration=45s, {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, &(0x7f0000000200)='./nfsd\x00', 0x1ff) mount(0x0, 0x0, &(0x7f0000000300)='nfsd\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000400)='./nfsd/portlist\x00', 0x2, 0x0) write(r0, &(0x7f0000000500)='tcp 2049\n', 0x9) program did not crash testing program (duration=45s, {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, &(0x7f0000000200)='./nfsd\x00', 0x1ff) mount(0x0, &(0x7f0000000200)='./nfsd\x00', 0x0, 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000400)='./nfsd/portlist\x00', 0x2, 0x0) write(r0, &(0x7f0000000500)='tcp 2049\n', 0x9) program did not crash testing program (duration=45s, {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, &(0x7f0000000200)='./nfsd\x00', 0x1ff) mount(0x0, &(0x7f0000000200)='./nfsd\x00', &(0x7f0000000300)='nfsd\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, 0x0, 0x2, 0x0) write(r0, &(0x7f0000000500)='tcp 2049\n', 0x9) program did not crash testing program (duration=45s, {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, &(0x7f0000000200)='./nfsd\x00', 0x1ff) mount(0x0, &(0x7f0000000200)='./nfsd\x00', &(0x7f0000000300)='nfsd\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000400)='./nfsd/portlist\x00', 0x2, 0x0) write(r0, 0x0, 0x0) program did not crash testing program (duration=45s, {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, &(0x7f0000000200)='./nfsd\x00', 0x1ff) mount(0x0, &(0x7f0000000200)='./nfsd\x00', &(0x7f0000000300)='nfsd\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000400)='./nfsd/portlist\x00', 0x2, 0x0) write(r0, &(0x7f0000000500), 0x0) program did not crash extracting C reproducer testing compiled C program (duration=45s, {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=45s, {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=45s, {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=45s, {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=45s, {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=45s, {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=45s, {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=45s, {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=45s, {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=45s, {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, &(0x7f0000000200)='./nfsd\x00', 0x1ff) mount(0x0, &(0x7f0000000200)='./nfsd\x00', &(0x7f0000000300)='nfsd\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000400)='./nfsd/portlist\x00', 0x2, 0x0) write(r0, &(0x7f0000000500)='tcp 2049\n', 0x9) program crashed: kernel BUG in svc_destroy validation run: crashed=true testing program (duration=45s, {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, &(0x7f0000000200)='./nfsd\x00', 0x1ff) mount(0x0, &(0x7f0000000200)='./nfsd\x00', &(0x7f0000000300)='nfsd\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000400)='./nfsd/portlist\x00', 0x2, 0x0) write(r0, &(0x7f0000000500)='tcp 2049\n', 0x9) program crashed: kernel BUG in svc_destroy validation run: crashed=true testing program (duration=45s, {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, &(0x7f0000000200)='./nfsd\x00', 0x1ff) mount(0x0, &(0x7f0000000200)='./nfsd\x00', &(0x7f0000000300)='nfsd\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000400)='./nfsd/portlist\x00', 0x2, 0x0) write(r0, &(0x7f0000000500)='tcp 2049\n', 0x9) program crashed: kernel BUG in svc_destroy validation run: crashed=true reproducing took 1h10m38.378718605s 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: 4463 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 : ffff800020f97930 x29: ffff800020f97930 x28: 1fffe000197f29ef x27: ffff0000da700000 x26: dfff800000000000 x25: ffff7000041f2f2c x24: ffff800020f97960 x23: ffff0000d7a7ca00 x22: dfff800000000000 x21: 0000000000000001 x20: ffff0000d6311c68 x19: ffff0000d6311c50 x18: 1fffe00033e6997e x17: ffff8000153bd000 x16: ffff8000082dd284 x15: 000000000004ffff x14: 0000000000000001 x13: 1fffe00033e69af0 x12: 0000000000000000 x11: ff00800010f2e424 x10: 0000000000000000 x9 : ffff800010f2e424 x8 : ffff0000da700000 x7 : ffff8000083b96c4 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+0x58/0x128 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 97c31b68 17ffffc8 97c31afe (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: 4463 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 : ffff800020f97930 x29: ffff800020f97930 x28: 1fffe000197f29ef x27: ffff0000da700000 x26: dfff800000000000 x25: ffff7000041f2f2c x24: ffff800020f97960 x23: ffff0000d7a7ca00 x22: dfff800000000000 x21: 0000000000000001 x20: ffff0000d6311c68 x19: ffff0000d6311c50 x18: 1fffe00033e6997e x17: ffff8000153bd000 x16: ffff8000082dd284 x15: 000000000004ffff x14: 0000000000000001 x13: 1fffe00033e69af0 x12: 0000000000000000 x11: ff00800010f2e424 x10: 0000000000000000 x9 : ffff800010f2e424 x8 : ffff0000da700000 x7 : ffff8000083b96c4 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+0x58/0x128 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 97c31b68 17ffffc8 97c31afe (d4210000) ---[ end trace 0000000000000000 ]---