Extracting prog: 31m32.742925105s
Minimizing prog: 17m23.19408166s
Simplifying prog options: 0s
Extracting C: 1m55.997512519s
Simplifying C: 9m12.401232702s


extracting reproducer from 20 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-openat-write-mkdirat-mount$nfs4
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./nfsd\x00', 0x1ff)
mount(0x0, &(0x7f0000000000)='./nfsd\x00', &(0x7f0000000080)='nfsd\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000100)='./nfsd/portlist\x00', 0x2, 0x0)
write(r0, &(0x7f0000000180)='2049\n', 0x5)
r1 = openat(0xffffffffffffff9c, &(0x7f0000000200)='./nfsd/threads\x00', 0x2, 0x0)
write(r1, &(0x7f0000000280)='1\n', 0x2)
mkdirat(0xffffffffffffff9c, &(0x7f0000000300)='./mnt\x00', 0x1ff)
mount$nfs4(&(0x7f0000000400)='127.0.0.1:/\x00', &(0x7f0000000300)='./mnt\x00', &(0x7f0000000500), 0x0, &(0x7f0000000600))

program did not crash
single: failed to extract reproducer
bisect: bisecting 20 programs with base timeout 30s
testing program (duration=35s, {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, 8, 8, 6, 8, 4, 2, 14, 4, 19, 8, 14, 6, 15, 11, 2, 5, 2, 5, 8]
detailed listing:
executing program 1:
r0 = fsopen(&(0x7f0000000000)='ceph\x00', 0x0)
fsconfig$FSCONFIG_SET_STRING(r0, 0x1, &(0x7f0000000100)='source\x00', &(0x7f0000000200)='[::1]:6789:/\x00', 0x0)
fsconfig$FSCONFIG_CMD_CREATE(r0, 0x6, 0x0, 0x0, 0x0)
executing program 2:
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./sys\x00', 0x1ff)
mount(0x0, &(0x7f0000000100)='./sys\x00', &(0x7f0000000180)='sysfs\x00', 0x0, 0x0)
r0 = syz_usb_connect$hid(0x0, 0x36, &(0x7f0000000040)=ANY=[@ANYBLOB="12010000000000407d1ebe2d000000000001090224000100000000090400000103010200092100000001222200090581030800000000"], 0x0)
syz_usb_control_io$hid(r0, 0x0, 0x0)
syz_usb_control_io$hid(r0, &(0x7f00000001c0)={0x24, 0x0, 0x0, &(0x7f0000000000)=ANY=[@ANYBLOB="002222000000962313"], 0x0}, 0x0)
nanosleep(&(0x7f0000000500)={0x1}, 0x0)
r1 = openat(0xffffffffffffff9c, &(0x7f0000000600)='./sys/class/konepure/roccatkonepure0/macro\x00', 0x1, 0x0)
write(r1, &(0x7f0000001000)='\x00', 0x1)
executing program 1:
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./sys\x00', 0x1ff)
mount(0x0, &(0x7f0000000000)='./sys\x00', &(0x7f0000000040)='sysfs\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000080)='./sys/fs/orangefs/slot_timeout_secs\x00', 0x1, 0x0)
write(r0, &(0x7f0000000100)='0\n\x00', 0x2)
close(r0)
r1 = openat(0xffffffffffffff9c, &(0x7f0000000140)='./sys/fs/orangefs/op_timeout_secs\x00', 0x1, 0x0)
write(r1, &(0x7f0000000180)='0\n\x00', 0x2)
close(r1)
executing program 0:
add_key$user(&(0x7f0000000040), &(0x7f0000000080)={'syz', 0x0}, &(0x7f0000000100)="0400"/740, 0x2e4, 0xfffffffffffffffd)
mkdirat(0xffffffffffffff9c, &(0x7f0000000400)='./lower\x00', 0x1ff)
mkdirat(0xffffffffffffff9c, &(0x7f0000000440)='./mnt\x00', 0x1ff)
mount(&(0x7f0000000400), &(0x7f0000000440)='./mnt\x00', &(0x7f0000000480)='ecryptfs\x00', 0x0, &(0x7f0000000500)='ecryptfs_sig=syz0,ecryptfs_fnek_sig=syz0,ecryptfs_cipher=aes,ecryptfs_key_bytes=16\x00')
r0 = openat(0xffffffffffffff9c, &(0x7f0000000440)='./mnt\x00', 0x0, 0x0)
getdents64(r0, &(0x7f0000000600), 0x1000)
executing program 4:
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./sys\x00', 0x1ff)
mount(0x0, &(0x7f0000000000)='./sys\x00', &(0x7f0000000100)='sysfs\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000140)='./file0\x00', 0x42, 0x1b6)
pwrite64(r0, &(0x7f0000000180)='\x00\x00\x00\x00\x00\x00\x00\x00', 0x8, 0x0)
r1 = syz_open_dev$loop(&(0x7f0000000040), 0x0, 0x2)
ioctl$LOOP_SET_FD(r1, 0x4c00, r0)
r2 = openat(0xffffffffffffff9c, &(0x7f0000000200)='./sys/block/loop0/loop/backing_file\x00', 0x0, 0x0)
read(r2, &(0x7f0000000300)=""/4096, 0x1000)
executing program 3:
r0 = openat$comedi(0xffffffffffffff9c, &(0x7f0000000080)='/dev/comedi3\x00', 0x0, 0x0)
ioctl$COMEDI_DEVCONFIG(r0, 0x40946400, &(0x7f00000000c0)={'pcl816\x00', [0x300, 0x7, 0x1]})
ioctl$COMEDI_CMD(r0, 0x80506409, &(0x7f0000000200)={0x0, 0x0, 0x2, 0x0, 0x4, 0x0, 0x10, 0x2710, 0x20, 0x1, 0x1, 0x0, &(0x7f0000000300)=[0x0], 0x1, 0x0})
read(r0, &(0x7f0000000400)=""/100, 0x64)
executing program 1:
r0 = syz_open_dev$mtd(&(0x7f0000000000), 0x0, 0x2)
ioctl$BLKPG(r0, 0x1269, &(0x7f00000000c0)={0x1, 0x0, 0x0, &(0x7f0000000100)={0x0, 0x10000, 0x1}})
executing program 4:
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./config\x00', 0x1ff)
mount(&(0x7f0000000040)=@filename='none\x00', &(0x7f0000000080)='./config\x00', &(0x7f00000000c0)='configfs\x00', 0x0, 0x0)
mkdirat(0xffffffffffffff9c, &(0x7f0000000100)='./config/usb_gadget/g1\x00', 0x1ff)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000140)='./config/usb_gadget/g1/idVendor\x00', 0x2, 0x0)
write(r0, &(0x7f0000000180)='0x1234\x00', 0x7)
r1 = openat(0xffffffffffffff9c, &(0x7f00000001c0)='./config/usb_gadget/g1/idProduct\x00', 0x2, 0x0)
write(r1, &(0x7f0000000200)='0x5678\x00', 0x7)
mkdirat(0xffffffffffffff9c, &(0x7f0000000240)='./config/usb_gadget/g1/functions/midi2.usb0\x00', 0x1ff)
mkdirat(0xffffffffffffff9c, &(0x7f0000000280)='./config/usb_gadget/g1/configs/c.1\x00', 0x1ff)
symlinkat(&(0x7f00000002c0)='./config/usb_gadget/g1/functions/midi2.usb0\x00', 0xffffffffffffff9c, &(0x7f0000000300)='./config/usb_gadget/g1/configs/c.1/f1\x00')
r2 = openat(0xffffffffffffff9c, &(0x7f0000000340)='./config/usb_gadget/g1/UDC\x00', 0x2, 0x0)
write(r2, &(0x7f0000000380)='dummy_udc.0\n\x00', 0xc)
nanosleep(&(0x7f00000003c0)={0x0, 0x5f5e100}, 0x0)
write(r2, &(0x7f0000000400)='\n\x00', 0x1)
executing program 3:
mkdirat(0xffffffffffffff9c, &(0x7f0000000040)='./proc\x00', 0x1ff)
mount(0x0, &(0x7f0000000080)='./proc\x00', &(0x7f00000000c0)='proc\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000100)='./proc/interrupts\x00', 0x0, 0x0)
read(r0, &(0x7f0000000100), 0x1000)
executing program 1:
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./sys\x00', 0x1ff)
mount(0x0, &(0x7f0000000000)='./sys\x00', &(0x7f0000000040)='sysfs\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000080)='./sys/class/fcloop/ctl/add_target_port\x00', 0x1, 0x0)
write(r0, &(0x7f0000000100)='wwnn=0x2000000044112233,wwpn=0x1000000044112233\n', 0x32)
close(r0)
mkdirat(0xffffffffffffff9c, &(0x7f0000000140)='./config\x00', 0x1ff)
mount(0x0, &(0x7f0000000140)='./config\x00', &(0x7f0000000180)='configfs\x00', 0x0, 0x0)
mkdirat(0xffffffffffffff9c, &(0x7f00000001c0)='./config/nvmet/subsystems/testsubsys\x00', 0x1ff)
mkdirat(0xffffffffffffff9c, &(0x7f0000000200)='./config/nvmet/ports/1\x00', 0x1ff)
r1 = openat(0xffffffffffffff9c, &(0x7f0000000240)='./config/nvmet/ports/1/addr_trtype\x00', 0x2, 0x0)
write(r1, &(0x7f0000000280)='fc\n', 0x3)
close(r1)
r2 = openat(0xffffffffffffff9c, &(0x7f00000002c0)='./config/nvmet/ports/1/addr_adrfam\x00', 0x2, 0x0)
write(r2, &(0x7f0000000300)='fc\n', 0x3)
close(r2)
r3 = openat(0xffffffffffffff9c, &(0x7f0000000340)='./config/nvmet/ports/1/addr_traddr\x00', 0x2, 0x0)
write(r3, &(0x7f0000000380)='nn-0x2000000044112233:pn-0x1000000044112233\n', 0x2c)
close(r3)
symlinkat(&(0x7f0000000440)='./config/nvmet/subsystems/testsubsys\x00', 0xffffffffffffff9c, &(0x7f0000000480)='./config/nvmet/ports/1/subsystems/testsubsys\x00')
executing program 3:
r0 = openat$userio(0xffffffffffffff9c, &(0x7f0000000080), 0x2, 0x0)
write$USERIO_CMD_SET_PORT_TYPE(r0, &(0x7f0000000100)={0x1, 0x1}, 0x2)
write$USERIO_CMD_REGISTER(r0, &(0x7f0000000200), 0x2)
read(r0, &(0x7f0000000400), 0x1)
write$USERIO_CMD_SEND_INTERRUPT(r0, &(0x7f0000000140)={0x2, 0xfa}, 0x2)
write$USERIO_CMD_SEND_INTERRUPT(r0, &(0x7f0000000140), 0x2)
write$USERIO_CMD_SEND_INTERRUPT(r0, &(0x7f0000000140), 0x2)
read(r0, &(0x7f0000000400), 0x1)
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000180)='./dev\x00', 0x1ff)
mount(0x0, &(0x7f0000000180)='./dev\x00', &(0x7f00000001c0)='devtmpfs\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000200)='./dev/kmsg\x00', 0x0, 0x0)
lseek(r0, 0x0, 0x2)
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./sys\x00', 0x1ff)
mount(0x0, &(0x7f0000000000)='./sys\x00', &(0x7f0000000040)='sysfs\x00', 0x0, 0x0)
r1 = openat(0xffffffffffffff9c, &(0x7f0000000080)='./sys/module/block2mtd/parameters/block2mtd\x00', 0x1, 0x0)
write(r1, &(0x7f00000000c0)='/dev/ram0,131072\x00', 0x11)
r2 = openat$ubi_ctrl(0xffffffffffffff9c, &(0x7f0000000100), 0x2, 0x0)
ioctl(r2, 0x40186f40, &(0x7f0000000140)="000000000100"/24)
read(r0, &(0x7f0000000240)=""/1024, 0x400)
read(r0, &(0x7f0000000640)=""/1024, 0x400)
read(r0, &(0x7f0000000a40)=""/1024, 0x400)
read(r0, &(0x7f0000000e40)=""/1024, 0x400)
executing program 4:
mkdirat(0xffffffffffffff9c, &(0x7f0000000100)='./nfsd\x00', 0x1ff)
mount(&(0x7f0000000040)=@filename='none\x00', &(0x7f0000000100)='./nfsd\x00', &(0x7f0000000140)='nfsd\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000180)='./nfsd/portlist\x00', 0x2, 0x0)
write(r0, &(0x7f00000001c0)='tcp 2049\n', 0x9)
r1 = openat(0xffffffffffffff9c, &(0x7f0000000200)='./nfsd/threads\x00', 0x2, 0x0)
write(r1, &(0x7f0000000240)='0\n', 0x2)
executing program 1:
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./nfsd\x00', 0x1ff)
mount(0x0, &(0x7f0000000000)='./nfsd\x00', &(0x7f0000000040)='nfsd\x00', 0x0, 0x0)
mkdirat(0xffffffffffffff9c, &(0x7f0000000080)='./proc\x00', 0x1ff)
mount(0x0, &(0x7f0000000080)='./proc\x00', &(0x7f00000000c0)='proc\x00', 0x0, 0x0)
mkdirat(0xffffffffffffff9c, &(0x7f0000000100)='./export\x00', 0x1ff)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000240)='./proc/net/rpc/auth.unix.ip/channel\x00', 0x1, 0x0)
write(r0, &(0x7f0000000280)='nfsd 127.0.0.1 2147483647 testdom\n', 0x22)
r1 = openat(0xffffffffffffff9c, &(0x7f00000002c0)='./proc/net/rpc/nfsd.fh/channel\x00', 0x1, 0x0)
write(r1, &(0x7f0000000300)='testdom 1 \\x00000000 2147483647 ./export\n', 0x29)
r2 = openat(0xffffffffffffff9c, &(0x7f0000000340)='./proc/net/rpc/nfsd.export/channel\x00', 0x1, 0x0)
write(r2, &(0x7f0000000380)='testdom ./export 2147483647 9218 0 0 0\n', 0x27)
r3 = openat(0xffffffffffffff9c, &(0x7f0000000140)='./nfsd/portlist\x00', 0x1, 0x0)
write(r3, &(0x7f0000000180)='tcp 2049\n', 0x9)
r4 = openat(0xffffffffffffff9c, &(0x7f00000001c0)='./nfsd/threads\x00', 0x1, 0x0)
write(r4, &(0x7f0000000200)='1\n', 0x2)
executing program 0:
r0 = bpf$MAP_CREATE_RINGBUF(0x0, &(0x7f00000000c0)={0x1b, 0x0, 0x0, 0x8000, 0x0, 0x0, 0x0, '\x00', 0x0, 0x0}, 0x48)
r1 = bpf$BPF_BTF_LOAD(0x12, &(0x7f00000001c0)={&(0x7f0000000040)=ANY=[@ANYBLOB="9feb01001800000000000000180000001800000004000000020000000100000c02000000000000000000000d0000000000005f"], 0x0, 0x34}, 0x28)
r2 = bpf$BPF_PROG_RAW_TRACEPOINT_LOAD(0x5, &(0x7f0000000200)={0x11, 0x3, &(0x7f0000000100)=ANY=[@ANYBLOB="180000000100000000000000801800009500000000000000"], &(0x7f0000000000)='GPL\x00', 0x0, 0x0, 0x0, 0x0, 0x0, '\x00', 0x0, 0x0, r1, 0x8, &(0x7f00000000c0)={0x0, 0x1}, 0x1, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}, 0x94)
r3 = bpf$BPF_PROG_WITH_BTFID_LOAD(0x5, &(0x7f0000000500)=@bpf_tracing={0x1a, 0xf, &(0x7f00000002c0)=@ringbuf={{}, {{0x18, 0x1, 0x1, 0x0, r0}}, {}, [], {{}, {0x7, 0x0, 0xb, 0x2, 0x0, 0x0, 0x1}, {0x85, 0x0, 0x0, 0x84}}}, &(0x7f0000000180)='GPL\x00', 0x0, 0x0, 0x0, 0x40f00, 0x0, '\x00', 0x0, 0x19, r1, 0x8, 0x0, 0x0, 0x10, 0x0, 0x0, 0x1, r2}, 0x94)
r4 = bpf$BPF_LINK_CREATE(0x1c, &(0x7f00000003c0)={r3, 0x0, 0x19, 0x0, @void}, 0x30)
close(r4)
close(r3)
close(r2)
close(r1)
close(r0)
nanosleep(&(0x7f0000000400)={0x0, 0x1dcd6500}, 0x0)
executing program 2:
syz_usb_connect(0x1, 0x2b, &(0x7f0000000040)=ANY=[@ANYBLOB="1201000200000040801b09e30001000000010902190001010080fa0904000001ff00000007058202000200"], 0x0)
nanosleep(&(0x7f0000000300)={0x1}, 0x0)
executing program 4:
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./sys\x00', 0x1ff)
mount(0x0, &(0x7f0000000000)='./sys\x00', &(0x7f0000000080)='sysfs\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000180)='./sys/class/net/bond0/bonding/mode\x00', 0x1, 0x0)
write(r0, &(0x7f00000001c0)='balance-rr\n', 0xb)
close(r0)
executing program 1:
r0 = socket$nl_rdma(0x10, 0x3, 0x14)
sendmsg$RDMA_NLDEV_CMD_NEWLINK(r0, &(0x7f0000000040)={0x0, 0x0, &(0x7f0000000080)={&(0x7f00000000c0)={0x38, 0x1403, 0x1, 0x0, 0x0, "", [{{0x9, 0x2, 'syz0\x00'}, {0x8, 0x41, 'rxe\x00'}, {0x14, 0x33, 'lo\x00'}}]}, 0x38}}, 0x0)
executing program 4:
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./nfsd\x00', 0x1ff)
mount(0x0, &(0x7f0000000000)='./nfsd\x00', &(0x7f0000000040)='nfsd\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000080)='./nfsd/portlist\x00', 0x2, 0x0)
write(r0, &(0x7f0000000100)='tcp 2049\n', 0x9)
close(r0)
executing program 4:
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./nfsd\x00', 0x1ff)
mount(0x0, &(0x7f0000000000)='./nfsd\x00', &(0x7f0000000080)='nfsd\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000100)='./nfsd/portlist\x00', 0x2, 0x0)
write(r0, &(0x7f0000000180)='2049\n', 0x5)
r1 = openat(0xffffffffffffff9c, &(0x7f0000000200)='./nfsd/threads\x00', 0x2, 0x0)
write(r1, &(0x7f0000000280)='1\n', 0x2)
mkdirat(0xffffffffffffff9c, &(0x7f0000000300)='./mnt\x00', 0x1ff)
mount$nfs4(&(0x7f0000000400)='127.0.0.1:/\x00', &(0x7f0000000300)='./mnt\x00', &(0x7f0000000500), 0x0, &(0x7f0000000600))

program crashed: KASAN: use-after-free Write in nfsd_create_serv
bisect: bisecting 20 programs
bisect: split chunks (needed=false): <19>
bisect: split chunk #0 of len 19 into 3 parts
bisect: testing without sub-chunk 1/3
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}}): [14, 4, 19, 8, 14, 6, 15, 11, 2, 5, 2, 5, 8]
detailed listing:
executing program 4:
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./config\x00', 0x1ff)
mount(&(0x7f0000000040)=@filename='none\x00', &(0x7f0000000080)='./config\x00', &(0x7f00000000c0)='configfs\x00', 0x0, 0x0)
mkdirat(0xffffffffffffff9c, &(0x7f0000000100)='./config/usb_gadget/g1\x00', 0x1ff)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000140)='./config/usb_gadget/g1/idVendor\x00', 0x2, 0x0)
write(r0, &(0x7f0000000180)='0x1234\x00', 0x7)
r1 = openat(0xffffffffffffff9c, &(0x7f00000001c0)='./config/usb_gadget/g1/idProduct\x00', 0x2, 0x0)
write(r1, &(0x7f0000000200)='0x5678\x00', 0x7)
mkdirat(0xffffffffffffff9c, &(0x7f0000000240)='./config/usb_gadget/g1/functions/midi2.usb0\x00', 0x1ff)
mkdirat(0xffffffffffffff9c, &(0x7f0000000280)='./config/usb_gadget/g1/configs/c.1\x00', 0x1ff)
symlinkat(&(0x7f00000002c0)='./config/usb_gadget/g1/functions/midi2.usb0\x00', 0xffffffffffffff9c, &(0x7f0000000300)='./config/usb_gadget/g1/configs/c.1/f1\x00')
r2 = openat(0xffffffffffffff9c, &(0x7f0000000340)='./config/usb_gadget/g1/UDC\x00', 0x2, 0x0)
write(r2, &(0x7f0000000380)='dummy_udc.0\n\x00', 0xc)
nanosleep(&(0x7f00000003c0)={0x0, 0x5f5e100}, 0x0)
write(r2, &(0x7f0000000400)='\n\x00', 0x1)
executing program 3:
mkdirat(0xffffffffffffff9c, &(0x7f0000000040)='./proc\x00', 0x1ff)
mount(0x0, &(0x7f0000000080)='./proc\x00', &(0x7f00000000c0)='proc\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000100)='./proc/interrupts\x00', 0x0, 0x0)
read(r0, &(0x7f0000000100), 0x1000)
executing program 1:
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./sys\x00', 0x1ff)
mount(0x0, &(0x7f0000000000)='./sys\x00', &(0x7f0000000040)='sysfs\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000080)='./sys/class/fcloop/ctl/add_target_port\x00', 0x1, 0x0)
write(r0, &(0x7f0000000100)='wwnn=0x2000000044112233,wwpn=0x1000000044112233\n', 0x32)
close(r0)
mkdirat(0xffffffffffffff9c, &(0x7f0000000140)='./config\x00', 0x1ff)
mount(0x0, &(0x7f0000000140)='./config\x00', &(0x7f0000000180)='configfs\x00', 0x0, 0x0)
mkdirat(0xffffffffffffff9c, &(0x7f00000001c0)='./config/nvmet/subsystems/testsubsys\x00', 0x1ff)
mkdirat(0xffffffffffffff9c, &(0x7f0000000200)='./config/nvmet/ports/1\x00', 0x1ff)
r1 = openat(0xffffffffffffff9c, &(0x7f0000000240)='./config/nvmet/ports/1/addr_trtype\x00', 0x2, 0x0)
write(r1, &(0x7f0000000280)='fc\n', 0x3)
close(r1)
r2 = openat(0xffffffffffffff9c, &(0x7f00000002c0)='./config/nvmet/ports/1/addr_adrfam\x00', 0x2, 0x0)
write(r2, &(0x7f0000000300)='fc\n', 0x3)
close(r2)
r3 = openat(0xffffffffffffff9c, &(0x7f0000000340)='./config/nvmet/ports/1/addr_traddr\x00', 0x2, 0x0)
write(r3, &(0x7f0000000380)='nn-0x2000000044112233:pn-0x1000000044112233\n', 0x2c)
close(r3)
symlinkat(&(0x7f0000000440)='./config/nvmet/subsystems/testsubsys\x00', 0xffffffffffffff9c, &(0x7f0000000480)='./config/nvmet/ports/1/subsystems/testsubsys\x00')
executing program 3:
r0 = openat$userio(0xffffffffffffff9c, &(0x7f0000000080), 0x2, 0x0)
write$USERIO_CMD_SET_PORT_TYPE(r0, &(0x7f0000000100)={0x1, 0x1}, 0x2)
write$USERIO_CMD_REGISTER(r0, &(0x7f0000000200), 0x2)
read(r0, &(0x7f0000000400), 0x1)
write$USERIO_CMD_SEND_INTERRUPT(r0, &(0x7f0000000140)={0x2, 0xfa}, 0x2)
write$USERIO_CMD_SEND_INTERRUPT(r0, &(0x7f0000000140), 0x2)
write$USERIO_CMD_SEND_INTERRUPT(r0, &(0x7f0000000140), 0x2)
read(r0, &(0x7f0000000400), 0x1)
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000180)='./dev\x00', 0x1ff)
mount(0x0, &(0x7f0000000180)='./dev\x00', &(0x7f00000001c0)='devtmpfs\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000200)='./dev/kmsg\x00', 0x0, 0x0)
lseek(r0, 0x0, 0x2)
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./sys\x00', 0x1ff)
mount(0x0, &(0x7f0000000000)='./sys\x00', &(0x7f0000000040)='sysfs\x00', 0x0, 0x0)
r1 = openat(0xffffffffffffff9c, &(0x7f0000000080)='./sys/module/block2mtd/parameters/block2mtd\x00', 0x1, 0x0)
write(r1, &(0x7f00000000c0)='/dev/ram0,131072\x00', 0x11)
r2 = openat$ubi_ctrl(0xffffffffffffff9c, &(0x7f0000000100), 0x2, 0x0)
ioctl(r2, 0x40186f40, &(0x7f0000000140)="000000000100"/24)
read(r0, &(0x7f0000000240)=""/1024, 0x400)
read(r0, &(0x7f0000000640)=""/1024, 0x400)
read(r0, &(0x7f0000000a40)=""/1024, 0x400)
read(r0, &(0x7f0000000e40)=""/1024, 0x400)
executing program 4:
mkdirat(0xffffffffffffff9c, &(0x7f0000000100)='./nfsd\x00', 0x1ff)
mount(&(0x7f0000000040)=@filename='none\x00', &(0x7f0000000100)='./nfsd\x00', &(0x7f0000000140)='nfsd\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000180)='./nfsd/portlist\x00', 0x2, 0x0)
write(r0, &(0x7f00000001c0)='tcp 2049\n', 0x9)
r1 = openat(0xffffffffffffff9c, &(0x7f0000000200)='./nfsd/threads\x00', 0x2, 0x0)
write(r1, &(0x7f0000000240)='0\n', 0x2)
executing program 1:
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./nfsd\x00', 0x1ff)
mount(0x0, &(0x7f0000000000)='./nfsd\x00', &(0x7f0000000040)='nfsd\x00', 0x0, 0x0)
mkdirat(0xffffffffffffff9c, &(0x7f0000000080)='./proc\x00', 0x1ff)
mount(0x0, &(0x7f0000000080)='./proc\x00', &(0x7f00000000c0)='proc\x00', 0x0, 0x0)
mkdirat(0xffffffffffffff9c, &(0x7f0000000100)='./export\x00', 0x1ff)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000240)='./proc/net/rpc/auth.unix.ip/channel\x00', 0x1, 0x0)
write(r0, &(0x7f0000000280)='nfsd 127.0.0.1 2147483647 testdom\n', 0x22)
r1 = openat(0xffffffffffffff9c, &(0x7f00000002c0)='./proc/net/rpc/nfsd.fh/channel\x00', 0x1, 0x0)
write(r1, &(0x7f0000000300)='testdom 1 \\x00000000 2147483647 ./export\n', 0x29)
r2 = openat(0xffffffffffffff9c, &(0x7f0000000340)='./proc/net/rpc/nfsd.export/channel\x00', 0x1, 0x0)
write(r2, &(0x7f0000000380)='testdom ./export 2147483647 9218 0 0 0\n', 0x27)
r3 = openat(0xffffffffffffff9c, &(0x7f0000000140)='./nfsd/portlist\x00', 0x1, 0x0)
write(r3, &(0x7f0000000180)='tcp 2049\n', 0x9)
r4 = openat(0xffffffffffffff9c, &(0x7f00000001c0)='./nfsd/threads\x00', 0x1, 0x0)
write(r4, &(0x7f0000000200)='1\n', 0x2)
executing program 0:
r0 = bpf$MAP_CREATE_RINGBUF(0x0, &(0x7f00000000c0)={0x1b, 0x0, 0x0, 0x8000, 0x0, 0x0, 0x0, '\x00', 0x0, 0x0}, 0x48)
r1 = bpf$BPF_BTF_LOAD(0x12, &(0x7f00000001c0)={&(0x7f0000000040)=ANY=[@ANYBLOB="9feb01001800000000000000180000001800000004000000020000000100000c02000000000000000000000d0000000000005f"], 0x0, 0x34}, 0x28)
r2 = bpf$BPF_PROG_RAW_TRACEPOINT_LOAD(0x5, &(0x7f0000000200)={0x11, 0x3, &(0x7f0000000100)=ANY=[@ANYBLOB="180000000100000000000000801800009500000000000000"], &(0x7f0000000000)='GPL\x00', 0x0, 0x0, 0x0, 0x0, 0x0, '\x00', 0x0, 0x0, r1, 0x8, &(0x7f00000000c0)={0x0, 0x1}, 0x1, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}, 0x94)
r3 = bpf$BPF_PROG_WITH_BTFID_LOAD(0x5, &(0x7f0000000500)=@bpf_tracing={0x1a, 0xf, &(0x7f00000002c0)=@ringbuf={{}, {{0x18, 0x1, 0x1, 0x0, r0}}, {}, [], {{}, {0x7, 0x0, 0xb, 0x2, 0x0, 0x0, 0x1}, {0x85, 0x0, 0x0, 0x84}}}, &(0x7f0000000180)='GPL\x00', 0x0, 0x0, 0x0, 0x40f00, 0x0, '\x00', 0x0, 0x19, r1, 0x8, 0x0, 0x0, 0x10, 0x0, 0x0, 0x1, r2}, 0x94)
r4 = bpf$BPF_LINK_CREATE(0x1c, &(0x7f00000003c0)={r3, 0x0, 0x19, 0x0, @void}, 0x30)
close(r4)
close(r3)
close(r2)
close(r1)
close(r0)
nanosleep(&(0x7f0000000400)={0x0, 0x1dcd6500}, 0x0)
executing program 2:
syz_usb_connect(0x1, 0x2b, &(0x7f0000000040)=ANY=[@ANYBLOB="1201000200000040801b09e30001000000010902190001010080fa0904000001ff00000007058202000200"], 0x0)
nanosleep(&(0x7f0000000300)={0x1}, 0x0)
executing program 4:
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./sys\x00', 0x1ff)
mount(0x0, &(0x7f0000000000)='./sys\x00', &(0x7f0000000080)='sysfs\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000180)='./sys/class/net/bond0/bonding/mode\x00', 0x1, 0x0)
write(r0, &(0x7f00000001c0)='balance-rr\n', 0xb)
close(r0)
executing program 1:
r0 = socket$nl_rdma(0x10, 0x3, 0x14)
sendmsg$RDMA_NLDEV_CMD_NEWLINK(r0, &(0x7f0000000040)={0x0, 0x0, &(0x7f0000000080)={&(0x7f00000000c0)={0x38, 0x1403, 0x1, 0x0, 0x0, "", [{{0x9, 0x2, 'syz0\x00'}, {0x8, 0x41, 'rxe\x00'}, {0x14, 0x33, 'lo\x00'}}]}, 0x38}}, 0x0)
executing program 4:
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./nfsd\x00', 0x1ff)
mount(0x0, &(0x7f0000000000)='./nfsd\x00', &(0x7f0000000040)='nfsd\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000080)='./nfsd/portlist\x00', 0x2, 0x0)
write(r0, &(0x7f0000000100)='tcp 2049\n', 0x9)
close(r0)
executing program 4:
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./nfsd\x00', 0x1ff)
mount(0x0, &(0x7f0000000000)='./nfsd\x00', &(0x7f0000000080)='nfsd\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000100)='./nfsd/portlist\x00', 0x2, 0x0)
write(r0, &(0x7f0000000180)='2049\n', 0x5)
r1 = openat(0xffffffffffffff9c, &(0x7f0000000200)='./nfsd/threads\x00', 0x2, 0x0)
write(r1, &(0x7f0000000280)='1\n', 0x2)
mkdirat(0xffffffffffffff9c, &(0x7f0000000300)='./mnt\x00', 0x1ff)
mount$nfs4(&(0x7f0000000400)='127.0.0.1:/\x00', &(0x7f0000000300)='./mnt\x00', &(0x7f0000000500), 0x0, &(0x7f0000000600))

program crashed: KASAN: use-after-free Write in nfsd_create_serv
bisect: the chunk can be dropped
bisect: testing without sub-chunk 2/3
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}}): [11, 2, 5, 2, 5, 8]
detailed listing:
executing program 0:
r0 = bpf$MAP_CREATE_RINGBUF(0x0, &(0x7f00000000c0)={0x1b, 0x0, 0x0, 0x8000, 0x0, 0x0, 0x0, '\x00', 0x0, 0x0}, 0x48)
r1 = bpf$BPF_BTF_LOAD(0x12, &(0x7f00000001c0)={&(0x7f0000000040)=ANY=[@ANYBLOB="9feb01001800000000000000180000001800000004000000020000000100000c02000000000000000000000d0000000000005f"], 0x0, 0x34}, 0x28)
r2 = bpf$BPF_PROG_RAW_TRACEPOINT_LOAD(0x5, &(0x7f0000000200)={0x11, 0x3, &(0x7f0000000100)=ANY=[@ANYBLOB="180000000100000000000000801800009500000000000000"], &(0x7f0000000000)='GPL\x00', 0x0, 0x0, 0x0, 0x0, 0x0, '\x00', 0x0, 0x0, r1, 0x8, &(0x7f00000000c0)={0x0, 0x1}, 0x1, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}, 0x94)
r3 = bpf$BPF_PROG_WITH_BTFID_LOAD(0x5, &(0x7f0000000500)=@bpf_tracing={0x1a, 0xf, &(0x7f00000002c0)=@ringbuf={{}, {{0x18, 0x1, 0x1, 0x0, r0}}, {}, [], {{}, {0x7, 0x0, 0xb, 0x2, 0x0, 0x0, 0x1}, {0x85, 0x0, 0x0, 0x84}}}, &(0x7f0000000180)='GPL\x00', 0x0, 0x0, 0x0, 0x40f00, 0x0, '\x00', 0x0, 0x19, r1, 0x8, 0x0, 0x0, 0x10, 0x0, 0x0, 0x1, r2}, 0x94)
r4 = bpf$BPF_LINK_CREATE(0x1c, &(0x7f00000003c0)={r3, 0x0, 0x19, 0x0, @void}, 0x30)
close(r4)
close(r3)
close(r2)
close(r1)
close(r0)
nanosleep(&(0x7f0000000400)={0x0, 0x1dcd6500}, 0x0)
executing program 2:
syz_usb_connect(0x1, 0x2b, &(0x7f0000000040)=ANY=[@ANYBLOB="1201000200000040801b09e30001000000010902190001010080fa0904000001ff00000007058202000200"], 0x0)
nanosleep(&(0x7f0000000300)={0x1}, 0x0)
executing program 4:
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./sys\x00', 0x1ff)
mount(0x0, &(0x7f0000000000)='./sys\x00', &(0x7f0000000080)='sysfs\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000180)='./sys/class/net/bond0/bonding/mode\x00', 0x1, 0x0)
write(r0, &(0x7f00000001c0)='balance-rr\n', 0xb)
close(r0)
executing program 1:
r0 = socket$nl_rdma(0x10, 0x3, 0x14)
sendmsg$RDMA_NLDEV_CMD_NEWLINK(r0, &(0x7f0000000040)={0x0, 0x0, &(0x7f0000000080)={&(0x7f00000000c0)={0x38, 0x1403, 0x1, 0x0, 0x0, "", [{{0x9, 0x2, 'syz0\x00'}, {0x8, 0x41, 'rxe\x00'}, {0x14, 0x33, 'lo\x00'}}]}, 0x38}}, 0x0)
executing program 4:
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./nfsd\x00', 0x1ff)
mount(0x0, &(0x7f0000000000)='./nfsd\x00', &(0x7f0000000040)='nfsd\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000080)='./nfsd/portlist\x00', 0x2, 0x0)
write(r0, &(0x7f0000000100)='tcp 2049\n', 0x9)
close(r0)
executing program 4:
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./nfsd\x00', 0x1ff)
mount(0x0, &(0x7f0000000000)='./nfsd\x00', &(0x7f0000000080)='nfsd\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000100)='./nfsd/portlist\x00', 0x2, 0x0)
write(r0, &(0x7f0000000180)='2049\n', 0x5)
r1 = openat(0xffffffffffffff9c, &(0x7f0000000200)='./nfsd/threads\x00', 0x2, 0x0)
write(r1, &(0x7f0000000280)='1\n', 0x2)
mkdirat(0xffffffffffffff9c, &(0x7f0000000300)='./mnt\x00', 0x1ff)
mount$nfs4(&(0x7f0000000400)='127.0.0.1:/\x00', &(0x7f0000000300)='./mnt\x00', &(0x7f0000000500), 0x0, &(0x7f0000000600))

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=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-write-openat-write-mkdirat-mount$nfs4
detailed listing:
executing program 4:
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./nfsd\x00', 0x1ff)
mount(0x0, &(0x7f0000000000)='./nfsd\x00', &(0x7f0000000080)='nfsd\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000100)='./nfsd/portlist\x00', 0x2, 0x0)
write(r0, &(0x7f0000000180)='2049\n', 0x5)
r1 = openat(0xffffffffffffff9c, &(0x7f0000000200)='./nfsd/threads\x00', 0x2, 0x0)
write(r1, &(0x7f0000000280)='1\n', 0x2)
mkdirat(0xffffffffffffff9c, &(0x7f0000000300)='./mnt\x00', 0x1ff)
mount$nfs4(&(0x7f0000000400)='127.0.0.1:/\x00', &(0x7f0000000300)='./mnt\x00', &(0x7f0000000500), 0x0, &(0x7f0000000600))

program did not crash
bisect: split chunks (needed=true): <5>
bisect: split chunk #0 of len 5 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}}): [2, 5, 8]
detailed listing:
executing program 1:
r0 = socket$nl_rdma(0x10, 0x3, 0x14)
sendmsg$RDMA_NLDEV_CMD_NEWLINK(r0, &(0x7f0000000040)={0x0, 0x0, &(0x7f0000000080)={&(0x7f00000000c0)={0x38, 0x1403, 0x1, 0x0, 0x0, "", [{{0x9, 0x2, 'syz0\x00'}, {0x8, 0x41, 'rxe\x00'}, {0x14, 0x33, 'lo\x00'}}]}, 0x38}}, 0x0)
executing program 4:
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./nfsd\x00', 0x1ff)
mount(0x0, &(0x7f0000000000)='./nfsd\x00', &(0x7f0000000040)='nfsd\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000080)='./nfsd/portlist\x00', 0x2, 0x0)
write(r0, &(0x7f0000000100)='tcp 2049\n', 0x9)
close(r0)
executing program 4:
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./nfsd\x00', 0x1ff)
mount(0x0, &(0x7f0000000000)='./nfsd\x00', &(0x7f0000000080)='nfsd\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000100)='./nfsd/portlist\x00', 0x2, 0x0)
write(r0, &(0x7f0000000180)='2049\n', 0x5)
r1 = openat(0xffffffffffffff9c, &(0x7f0000000200)='./nfsd/threads\x00', 0x2, 0x0)
write(r1, &(0x7f0000000280)='1\n', 0x2)
mkdirat(0xffffffffffffff9c, &(0x7f0000000300)='./mnt\x00', 0x1ff)
mount$nfs4(&(0x7f0000000400)='127.0.0.1:/\x00', &(0x7f0000000300)='./mnt\x00', &(0x7f0000000500), 0x0, &(0x7f0000000600))

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>
bisect: split chunk #0 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}}): [5, 8]
detailed listing:
executing program 4:
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./nfsd\x00', 0x1ff)
mount(0x0, &(0x7f0000000000)='./nfsd\x00', &(0x7f0000000040)='nfsd\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000080)='./nfsd/portlist\x00', 0x2, 0x0)
write(r0, &(0x7f0000000100)='tcp 2049\n', 0x9)
close(r0)
executing program 4:
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./nfsd\x00', 0x1ff)
mount(0x0, &(0x7f0000000000)='./nfsd\x00', &(0x7f0000000080)='nfsd\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000100)='./nfsd/portlist\x00', 0x2, 0x0)
write(r0, &(0x7f0000000180)='2049\n', 0x5)
r1 = openat(0xffffffffffffff9c, &(0x7f0000000200)='./nfsd/threads\x00', 0x2, 0x0)
write(r1, &(0x7f0000000280)='1\n', 0x2)
mkdirat(0xffffffffffffff9c, &(0x7f0000000300)='./mnt\x00', 0x1ff)
mount$nfs4(&(0x7f0000000400)='127.0.0.1:/\x00', &(0x7f0000000300)='./mnt\x00', &(0x7f0000000500), 0x0, &(0x7f0000000600))

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): <1>
bisect: split chunk #0 of len 1 into 2 parts
bisect: no way to further split the chunk
bisect: 2 programs left: 

executing program 4:
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./nfsd\x00', 0x1ff)
mount(0x0, &(0x7f0000000000)='./nfsd\x00', &(0x7f0000000040)='nfsd\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000080)='./nfsd/portlist\x00', 0x2, 0x0)
write(r0, &(0x7f0000000100)='tcp 2049\n', 0x9)
close(r0)
executing program 4:
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./nfsd\x00', 0x1ff)
mount(0x0, &(0x7f0000000000)='./nfsd\x00', &(0x7f0000000080)='nfsd\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000100)='./nfsd/portlist\x00', 0x2, 0x0)
write(r0, &(0x7f0000000180)='2049\n', 0x5)
r1 = openat(0xffffffffffffff9c, &(0x7f0000000200)='./nfsd/threads\x00', 0x2, 0x0)
write(r1, &(0x7f0000000280)='1\n', 0x2)
mkdirat(0xffffffffffffff9c, &(0x7f0000000300)='./mnt\x00', 0x1ff)
mount$nfs4(&(0x7f0000000400)='127.0.0.1:/\x00', &(0x7f0000000300)='./mnt\x00', &(0x7f0000000500), 0x0, &(0x7f0000000600))


bisect: trying to concatenate
bisect: concatenate 2 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}}): [4, 8]
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./nfsd\x00', 0x1ff)
mount(0x0, &(0x7f0000000000)='./nfsd\x00', &(0x7f0000000040)='nfsd\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000080)='./nfsd/portlist\x00', 0x2, 0x0)
write(r0, &(0x7f0000000100)='tcp 2049\n', 0x9)
executing program 4:
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./nfsd\x00', 0x1ff)
mount(0x0, &(0x7f0000000000)='./nfsd\x00', &(0x7f0000000080)='nfsd\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000100)='./nfsd/portlist\x00', 0x2, 0x0)
write(r0, &(0x7f0000000180)='2049\n', 0x5)
r1 = openat(0xffffffffffffff9c, &(0x7f0000000200)='./nfsd/threads\x00', 0x2, 0x0)
write(r1, &(0x7f0000000280)='1\n', 0x2)
mkdirat(0xffffffffffffff9c, &(0x7f0000000300)='./mnt\x00', 0x1ff)
mount$nfs4(&(0x7f0000000400)='127.0.0.1:/\x00', &(0x7f0000000300)='./mnt\x00', &(0x7f0000000500), 0x0, &(0x7f0000000600))

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}}): [3, 8]
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./nfsd\x00', 0x1ff)
mount(0x0, &(0x7f0000000000)='./nfsd\x00', &(0x7f0000000040)='nfsd\x00', 0x0, 0x0)
openat(0xffffffffffffff9c, &(0x7f0000000080)='./nfsd/portlist\x00', 0x2, 0x0)
executing program 4:
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./nfsd\x00', 0x1ff)
mount(0x0, &(0x7f0000000000)='./nfsd\x00', &(0x7f0000000080)='nfsd\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000100)='./nfsd/portlist\x00', 0x2, 0x0)
write(r0, &(0x7f0000000180)='2049\n', 0x5)
r1 = openat(0xffffffffffffff9c, &(0x7f0000000200)='./nfsd/threads\x00', 0x2, 0x0)
write(r1, &(0x7f0000000280)='1\n', 0x2)
mkdirat(0xffffffffffffff9c, &(0x7f0000000300)='./mnt\x00', 0x1ff)
mount$nfs4(&(0x7f0000000400)='127.0.0.1:/\x00', &(0x7f0000000300)='./mnt\x00', &(0x7f0000000500), 0x0, &(0x7f0000000600))

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}}): [3, 8]
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./nfsd\x00', 0x1ff)
mount(0x0, &(0x7f0000000000)='./nfsd\x00', &(0x7f0000000040)='nfsd\x00', 0x0, 0x0)
write(0xffffffffffffffff, &(0x7f0000000100)='tcp 2049\n', 0x9)
executing program 4:
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./nfsd\x00', 0x1ff)
mount(0x0, &(0x7f0000000000)='./nfsd\x00', &(0x7f0000000080)='nfsd\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000100)='./nfsd/portlist\x00', 0x2, 0x0)
write(r0, &(0x7f0000000180)='2049\n', 0x5)
r1 = openat(0xffffffffffffff9c, &(0x7f0000000200)='./nfsd/threads\x00', 0x2, 0x0)
write(r1, &(0x7f0000000280)='1\n', 0x2)
mkdirat(0xffffffffffffff9c, &(0x7f0000000300)='./mnt\x00', 0x1ff)
mount$nfs4(&(0x7f0000000400)='127.0.0.1:/\x00', &(0x7f0000000300)='./mnt\x00', &(0x7f0000000500), 0x0, &(0x7f0000000600))

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}}): [3, 8]
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./nfsd\x00', 0x1ff)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000080)='./nfsd/portlist\x00', 0x2, 0x0)
write(r0, &(0x7f0000000100)='tcp 2049\n', 0x9)
executing program 4:
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./nfsd\x00', 0x1ff)
mount(0x0, &(0x7f0000000000)='./nfsd\x00', &(0x7f0000000080)='nfsd\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000100)='./nfsd/portlist\x00', 0x2, 0x0)
write(r0, &(0x7f0000000180)='2049\n', 0x5)
r1 = openat(0xffffffffffffff9c, &(0x7f0000000200)='./nfsd/threads\x00', 0x2, 0x0)
write(r1, &(0x7f0000000280)='1\n', 0x2)
mkdirat(0xffffffffffffff9c, &(0x7f0000000300)='./mnt\x00', 0x1ff)
mount$nfs4(&(0x7f0000000400)='127.0.0.1:/\x00', &(0x7f0000000300)='./mnt\x00', &(0x7f0000000500), 0x0, &(0x7f0000000600))

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}}): [3, 8]
detailed listing:
executing program 0:
mount(0x0, &(0x7f0000000000)='./nfsd\x00', &(0x7f0000000040)='nfsd\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000080)='./nfsd/portlist\x00', 0x2, 0x0)
write(r0, &(0x7f0000000100)='tcp 2049\n', 0x9)
executing program 4:
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./nfsd\x00', 0x1ff)
mount(0x0, &(0x7f0000000000)='./nfsd\x00', &(0x7f0000000080)='nfsd\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000100)='./nfsd/portlist\x00', 0x2, 0x0)
write(r0, &(0x7f0000000180)='2049\n', 0x5)
r1 = openat(0xffffffffffffff9c, &(0x7f0000000200)='./nfsd/threads\x00', 0x2, 0x0)
write(r1, &(0x7f0000000280)='1\n', 0x2)
mkdirat(0xffffffffffffff9c, &(0x7f0000000300)='./mnt\x00', 0x1ff)
mount$nfs4(&(0x7f0000000400)='127.0.0.1:/\x00', &(0x7f0000000300)='./mnt\x00', &(0x7f0000000500), 0x0, &(0x7f0000000600))

program did not crash
minimized 5 calls -> 4 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}}): [4, 7]
detailed listing:
executing program 4:
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./nfsd\x00', 0x1ff)
mount(0x0, &(0x7f0000000000)='./nfsd\x00', &(0x7f0000000040)='nfsd\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000080)='./nfsd/portlist\x00', 0x2, 0x0)
write(r0, &(0x7f0000000100)='tcp 2049\n', 0x9)
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./nfsd\x00', 0x1ff)
mount(0x0, &(0x7f0000000000)='./nfsd\x00', &(0x7f0000000080)='nfsd\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000100)='./nfsd/portlist\x00', 0x2, 0x0)
write(r0, &(0x7f0000000180)='2049\n', 0x5)
r1 = openat(0xffffffffffffff9c, &(0x7f0000000200)='./nfsd/threads\x00', 0x2, 0x0)
write(r1, &(0x7f0000000280)='1\n', 0x2)
mkdirat(0xffffffffffffff9c, &(0x7f0000000300)='./mnt\x00', 0x1ff)

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}}): [4, 6]
detailed listing:
executing program 4:
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./nfsd\x00', 0x1ff)
mount(0x0, &(0x7f0000000000)='./nfsd\x00', &(0x7f0000000040)='nfsd\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000080)='./nfsd/portlist\x00', 0x2, 0x0)
write(r0, &(0x7f0000000100)='tcp 2049\n', 0x9)
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./nfsd\x00', 0x1ff)
mount(0x0, &(0x7f0000000000)='./nfsd\x00', &(0x7f0000000080)='nfsd\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000100)='./nfsd/portlist\x00', 0x2, 0x0)
write(r0, &(0x7f0000000180)='2049\n', 0x5)
r1 = openat(0xffffffffffffff9c, &(0x7f0000000200)='./nfsd/threads\x00', 0x2, 0x0)
write(r1, &(0x7f0000000280)='1\n', 0x2)

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, 5]
detailed listing:
executing program 4:
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./nfsd\x00', 0x1ff)
mount(0x0, &(0x7f0000000000)='./nfsd\x00', &(0x7f0000000040)='nfsd\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000080)='./nfsd/portlist\x00', 0x2, 0x0)
write(r0, &(0x7f0000000100)='tcp 2049\n', 0x9)
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./nfsd\x00', 0x1ff)
mount(0x0, &(0x7f0000000000)='./nfsd\x00', &(0x7f0000000080)='nfsd\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000100)='./nfsd/portlist\x00', 0x2, 0x0)
write(r0, &(0x7f0000000180)='2049\n', 0x5)
openat(0xffffffffffffff9c, &(0x7f0000000200)='./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}}): [4, 4]
detailed listing:
executing program 4:
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./nfsd\x00', 0x1ff)
mount(0x0, &(0x7f0000000000)='./nfsd\x00', &(0x7f0000000040)='nfsd\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000080)='./nfsd/portlist\x00', 0x2, 0x0)
write(r0, &(0x7f0000000100)='tcp 2049\n', 0x9)
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./nfsd\x00', 0x1ff)
mount(0x0, &(0x7f0000000000)='./nfsd\x00', &(0x7f0000000080)='nfsd\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000100)='./nfsd/portlist\x00', 0x2, 0x0)
write(r0, &(0x7f0000000180)='2049\n', 0x5)

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}}): [4, 3]
detailed listing:
executing program 4:
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./nfsd\x00', 0x1ff)
mount(0x0, &(0x7f0000000000)='./nfsd\x00', &(0x7f0000000040)='nfsd\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000080)='./nfsd/portlist\x00', 0x2, 0x0)
write(r0, &(0x7f0000000100)='tcp 2049\n', 0x9)
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./nfsd\x00', 0x1ff)
mount(0x0, &(0x7f0000000000)='./nfsd\x00', &(0x7f0000000080)='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}}): [4, 2]
detailed listing:
executing program 4:
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./nfsd\x00', 0x1ff)
mount(0x0, &(0x7f0000000000)='./nfsd\x00', &(0x7f0000000040)='nfsd\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000080)='./nfsd/portlist\x00', 0x2, 0x0)
write(r0, &(0x7f0000000100)='tcp 2049\n', 0x9)
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./nfsd\x00', 0x1ff)
mount(0x0, &(0x7f0000000000)='./nfsd\x00', &(0x7f0000000080)='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}}): [4, 1]
detailed listing:
executing program 4:
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./nfsd\x00', 0x1ff)
mount(0x0, &(0x7f0000000000)='./nfsd\x00', &(0x7f0000000040)='nfsd\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000080)='./nfsd/portlist\x00', 0x2, 0x0)
write(r0, &(0x7f0000000100)='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}}): [4, 0]
detailed listing:
executing program 4:
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./nfsd\x00', 0x1ff)
mount(0x0, &(0x7f0000000000)='./nfsd\x00', &(0x7f0000000040)='nfsd\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000080)='./nfsd/portlist\x00', 0x2, 0x0)
write(r0, &(0x7f0000000100)='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, &(0x7f0000000000)='./nfsd\x00', 0x1ff)
mount(0x0, &(0x7f0000000000)='./nfsd\x00', &(0x7f0000000040)='nfsd\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000080)='./nfsd/portlist\x00', 0x2, 0x0)
write(r0, &(0x7f0000000100)='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, &(0x7f0000000000)='./nfsd\x00', 0x1ff)
mount(0x0, &(0x7f0000000000)='./nfsd\x00', &(0x7f0000000040)='nfsd\x00', 0x0, 0x0)
openat(0xffffffffffffff9c, &(0x7f0000000080)='./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, &(0x7f0000000000)='./nfsd\x00', 0x1ff)
mount(0x0, &(0x7f0000000000)='./nfsd\x00', &(0x7f0000000040)='nfsd\x00', 0x0, 0x0)
write(0xffffffffffffffff, &(0x7f0000000100)='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, &(0x7f0000000000)='./nfsd\x00', 0x1ff)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000080)='./nfsd/portlist\x00', 0x2, 0x0)
write(r0, &(0x7f0000000100)='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, &(0x7f0000000000)='./nfsd\x00', &(0x7f0000000040)='nfsd\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000080)='./nfsd/portlist\x00', 0x2, 0x0)
write(r0, &(0x7f0000000100)='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, &(0x7f0000000000)='./nfsd\x00', &(0x7f0000000040)='nfsd\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000080)='./nfsd/portlist\x00', 0x2, 0x0)
write(r0, &(0x7f0000000100)='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, &(0x7f0000000000)='./nfsd\x00', 0x1ff)
mount(0x0, 0x0, &(0x7f0000000040)='nfsd\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000080)='./nfsd/portlist\x00', 0x2, 0x0)
write(r0, &(0x7f0000000100)='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, &(0x7f0000000000)='./nfsd\x00', 0x1ff)
mount(0x0, &(0x7f0000000000)='./nfsd\x00', 0x0, 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000080)='./nfsd/portlist\x00', 0x2, 0x0)
write(r0, &(0x7f0000000100)='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, &(0x7f0000000000)='./nfsd\x00', 0x1ff)
mount(0x0, &(0x7f0000000000)='./nfsd\x00', &(0x7f0000000040)='nfsd\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, 0x0, 0x2, 0x0)
write(r0, &(0x7f0000000100)='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, &(0x7f0000000000)='./nfsd\x00', 0x1ff)
mount(0x0, &(0x7f0000000000)='./nfsd\x00', &(0x7f0000000040)='nfsd\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000080)='./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, &(0x7f0000000000)='./nfsd\x00', 0x1ff)
mount(0x0, &(0x7f0000000000)='./nfsd\x00', &(0x7f0000000040)='nfsd\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000080)='./nfsd/portlist\x00', 0x2, 0x0)
write(r0, &(0x7f0000000100), 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, &(0x7f0000000000)='./nfsd\x00', 0x1ff)
mount(0x0, &(0x7f0000000000)='./nfsd\x00', &(0x7f0000000040)='nfsd\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000080)='./nfsd/portlist\x00', 0x2, 0x0)
write(r0, &(0x7f0000000100)='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, &(0x7f0000000000)='./nfsd\x00', 0x1ff)
mount(0x0, &(0x7f0000000000)='./nfsd\x00', &(0x7f0000000040)='nfsd\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000080)='./nfsd/portlist\x00', 0x2, 0x0)
write(r0, &(0x7f0000000100)='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, &(0x7f0000000000)='./nfsd\x00', 0x1ff)
mount(0x0, &(0x7f0000000000)='./nfsd\x00', &(0x7f0000000040)='nfsd\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000080)='./nfsd/portlist\x00', 0x2, 0x0)
write(r0, &(0x7f0000000100)='tcp 2049\n', 0x9)

program crashed: kernel BUG in svc_destroy
validation run: crashed=true
reproducing took 1h5m27.27743211s
repro crashed as (corrupted=false):
------------[ cut here ]------------
kernel BUG at net/sunrpc/svc.c:605!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 4425 Comm: syz.0.18 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
RIP: 0010:svc_destroy+0x184/0x190 net/sunrpc/svc.c:605
Code: 5f 5d e9 bf b1 62 f8 44 89 f9 80 e1 07 80 c1 03 38 c1 0f 8c 24 ff ff ff 4c 89 ff e8 66 3f 7b f8 e9 17 ff ff ff e8 ac fa 29 f8 <0f> 0b e8 a5 fa 29 f8 0f 0b 0f 1f 00 55 41 57 41 56 41 55 41 54 53
RSP: 0018:ffffc900033e7b10 EFLAGS: 00010293
RAX: ffffffff89583834 RBX: ffff88807a9be850 RCX: ffff888079af1e00
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc900033e7cb8 R08: ffffffff90b0f357 R09: 1ffffffff2161e6a
R10: dffffc0000000000 R11: fffffbfff2161e6b R12: dffffc0000000000
R13: dffffc0000000000 R14: ffff88807a9be868 R15: 0000000000000001
FS:  000055556e5b5500(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000558c3cd5b8f0 CR3: 000000001f317000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 kref_put include/linux/kref.h:65 [inline]
 svc_put include/linux/sunrpc/svc.h:123 [inline]
 __write_ports_addxprt fs/nfsd/nfsctl.c:768 [inline]
 __write_ports fs/nfsd/nfsctl.c:794 [inline]
 write_ports+0xa26/0xb80 fs/nfsd/nfsctl.c:847
 nfsctl_transaction_write+0x105/0x150 fs/nfsd/nfsctl.c:114
 vfs_write+0x2dc/0x9a0 fs/read_write.c:582
 ksys_write+0x14d/0x260 fs/read_write.c:637
 do_syscall_x64 arch/x86/entry/common.c:46 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:76
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7febb199e159
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffc7d1c58c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007febb1c25fa0 RCX: 00007febb199e159
RDX: 0000000000000009 RSI: 0000200000000100 RDI: 0000000000000003
RBP: 00007febb1a3503b R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007febb1c25fac R14: 00007febb1c25fa0 R15: 00007febb1c25fa0
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:svc_destroy+0x184/0x190 net/sunrpc/svc.c:605
Code: 5f 5d e9 bf b1 62 f8 44 89 f9 80 e1 07 80 c1 03 38 c1 0f 8c 24 ff ff ff 4c 89 ff e8 66 3f 7b f8 e9 17 ff ff ff e8 ac fa 29 f8 <0f> 0b e8 a5 fa 29 f8 0f 0b 0f 1f 00 55 41 57 41 56 41 55 41 54 53
RSP: 0018:ffffc900033e7b10 EFLAGS: 00010293
RAX: ffffffff89583834 RBX: ffff88807a9be850 RCX: ffff888079af1e00
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc900033e7cb8 R08: ffffffff90b0f357 R09: 1ffffffff2161e6a
R10: dffffc0000000000 R11: fffffbfff2161e6b R12: dffffc0000000000
R13: dffffc0000000000 R14: ffff88807a9be868 R15: 0000000000000001
FS:  000055556e5b5500(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000558c3cd5b8f0 CR3: 000000001f317000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400

final repro crashed as (corrupted=false):
------------[ cut here ]------------
kernel BUG at net/sunrpc/svc.c:605!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 4425 Comm: syz.0.18 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
RIP: 0010:svc_destroy+0x184/0x190 net/sunrpc/svc.c:605
Code: 5f 5d e9 bf b1 62 f8 44 89 f9 80 e1 07 80 c1 03 38 c1 0f 8c 24 ff ff ff 4c 89 ff e8 66 3f 7b f8 e9 17 ff ff ff e8 ac fa 29 f8 <0f> 0b e8 a5 fa 29 f8 0f 0b 0f 1f 00 55 41 57 41 56 41 55 41 54 53
RSP: 0018:ffffc900033e7b10 EFLAGS: 00010293
RAX: ffffffff89583834 RBX: ffff88807a9be850 RCX: ffff888079af1e00
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc900033e7cb8 R08: ffffffff90b0f357 R09: 1ffffffff2161e6a
R10: dffffc0000000000 R11: fffffbfff2161e6b R12: dffffc0000000000
R13: dffffc0000000000 R14: ffff88807a9be868 R15: 0000000000000001
FS:  000055556e5b5500(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000558c3cd5b8f0 CR3: 000000001f317000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 kref_put include/linux/kref.h:65 [inline]
 svc_put include/linux/sunrpc/svc.h:123 [inline]
 __write_ports_addxprt fs/nfsd/nfsctl.c:768 [inline]
 __write_ports fs/nfsd/nfsctl.c:794 [inline]
 write_ports+0xa26/0xb80 fs/nfsd/nfsctl.c:847
 nfsctl_transaction_write+0x105/0x150 fs/nfsd/nfsctl.c:114
 vfs_write+0x2dc/0x9a0 fs/read_write.c:582
 ksys_write+0x14d/0x260 fs/read_write.c:637
 do_syscall_x64 arch/x86/entry/common.c:46 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:76
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7febb199e159
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffc7d1c58c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007febb1c25fa0 RCX: 00007febb199e159
RDX: 0000000000000009 RSI: 0000200000000100 RDI: 0000000000000003
RBP: 00007febb1a3503b R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007febb1c25fac R14: 00007febb1c25fa0 R15: 00007febb1c25fa0
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:svc_destroy+0x184/0x190 net/sunrpc/svc.c:605
Code: 5f 5d e9 bf b1 62 f8 44 89 f9 80 e1 07 80 c1 03 38 c1 0f 8c 24 ff ff ff 4c 89 ff e8 66 3f 7b f8 e9 17 ff ff ff e8 ac fa 29 f8 <0f> 0b e8 a5 fa 29 f8 0f 0b 0f 1f 00 55 41 57 41 56 41 55 41 54 53
RSP: 0018:ffffc900033e7b10 EFLAGS: 00010293
RAX: ffffffff89583834 RBX: ffff88807a9be850 RCX: ffff888079af1e00
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc900033e7cb8 R08: ffffffff90b0f357 R09: 1ffffffff2161e6a
R10: dffffc0000000000 R11: fffffbfff2161e6b R12: dffffc0000000000
R13: dffffc0000000000 R14: ffff88807a9be868 R15: 0000000000000001
FS:  000055556e5b5500(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000558c3cd5b8f0 CR3: 000000001f317000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400