syzbot


panic: Assertion (cnp->cn_flags & (LOCKPARENT | WANTPARENT)) == 0 failed at /syzkaller/managers/main/kernel/sys/kern/vfs

Status: fixed on 2021/07/11 16:25
Reported-by: syzbot+dbfd5b122ad66ae9a14b@syzkaller.appspotmail.com
Fix commit: 6de3cf14c47d vn_open_cred(): disallow O_CREAT | O_EMPTY_PATH
First crash: 635d, last: 635d

Sample crash report:
login: panic: Assertion (cnp->cn_flags & (LOCKPARENT | WANTPARENT)) == 0 failed at /syzkaller/managers/main/kernel/sys/kern/vfs_lookup.c:490
cpuid = 0
time = 1620841414
KDB: stack backtrace:
db_trace_self_wrapper() at db_trace_self_wrapper+0x47/frame 0xfffffe0094975640
vpanic() at vpanic+0x1c7/frame 0xfffffe00949756a0
panic() at panic+0x43/frame 0xfffffe0094975700
namei() at namei+0x13e3/frame 0xfffffe00949757c0
vn_open_cred() at vn_open_cred+0x1ad/frame 0xfffffe0094975940
kern_openat() at kern_openat+0x3bd/frame 0xfffffe0094975ab0
amd64_syscall() at amd64_syscall+0x247/frame 0xfffffe0094975bf0
fast_syscall_common() at fast_syscall_common+0xf8/frame 0xfffffe0094975bf0
--- syscall (0, FreeBSD ELF64, nosys), rip = 0x2b3baa, rsp = 0x7fffffffea68, rbp = 0x7fffffffea80 ---
KDB: enter: panic
[ thread pid 785 tid 100106 ]
Stopped at      kdb_enter+0x67: movq    $0,0x163a49e(%rip)
db> 
db> set $lines = 0
db> set $maxwidth = 0
db> show registers
cs                        0x20
ds                        0x3b
es                        0x3b
fs                        0x13
gs                        0x1b
ss                        0x28
rax                       0x12
rcx                       0x80
rdx         0xffffffff819c28ef
rbx                          0
rsp         0xfffffe0094975620
rbp         0xfffffe0094975640
rsi                        0x1
rdi                          0
r8                           0
r9          0x8080808080808080
r10         0xfffffe0094975510
r11              0x1ff6bfff59c
r12         0xffffffff82267ac0  ddb_dbbe
r13                          0
r14         0xffffffff81a73d79
r15         0xffffffff81a73d79
rip         0xffffffff8112ece7  kdb_enter+0x67
rflags                    0x82
kdb_enter+0x67: movq    $0,0x163a49e(%rip)
db> show proc
Process 785 (syz-executor1681918) at 0xfffff80027434538:
 state: NORMAL
 uid: 0  gids: 0, 0, 5
 parent: pid 783 at 0xfffff80004fd5000
 ABI: FreeBSD ELF64
 flag: 0x10004000  flag2: 0
 arguments: ./syz-executor168191864
 reaper: 0xfffff8000452a538 reapsubtree: 1
 sigparent: 20
 vmspace: 0xfffffe0094bf4000
   (map 0xfffffe0094bf4000)
   (map.pmap 0xfffffe0094bf40c0)
   (pmap 0xfffffe0094bf4120)
 threads: 1
100106                   Run     CPU 0                       syz-executor1681918
db> ps
  pid  ppid  pgrp   uid  state   wmesg   wchan               cmd
  785   783   783     0  R       CPU 0                       syz-executor1681918
  783   781   783     0  Ss      pause   0xfffff80004fd50b0  csh
  781   694   781     0  Ss      select  0xfffff8002306fb40  sshd
  760     1   760     0  Ss+     ttyin   0xfffff800049d7cb0  getty
  759     1   759     0  Ss+     ttyin   0xfffff80004ced8b0  getty
  758     1   758     0  Ss+     ttyin   0xfffff80004cedcb0  getty
  757     1   757     0  Ss+     ttyin   0xfffff80004cf40b0  getty
  756     1   756     0  Ss+     ttyin   0xfffff80004cf44b0  getty
  755     1   755     0  Ss+     ttyin   0xfffff80004cf48b0  getty
  754     1   754     0  Ss+     ttyin   0xfffff80004cf4cb0  getty
  753     1   753     0  Ss+     ttyin   0xfffff80004c6e0b0  getty
  752     1   752     0  Ss+     ttyin   0xfffff80004c6e4b0  getty
  750     1    24     0  S+      piperd  0xfffff80027426ba0  logger
  749   748    24     0  S+      nanslp  0xffffffff8273c8e0  sleep
  748     1    24     0  S+      wait    0xfffff8002760fa70  sh
  698     1   698     0  Ss      nanslp  0xffffffff8273c8e0  cron
  694     1   694     0  Ss      select  0xfffff80004cfc5c0  sshd
  507     1   507     0  Ss      select  0xfffff8002306fdc0  syslogd
  436     1   436     0  Ss      select  0xfffff80004cfc440  devd
  435     1   435    65  Ss      select  0xfffff80023060ac0  dhclient
  350     1   350     0  Ss      select  0xfffff800230609c0  dhclient
  347     1   347     0  Ss      select  0xfffff80023060bc0  dhclient
   23     0     0     0  DL      syncer  0xffffffff8282bd50  [syncer]
   22     0     0     0  DL      vlruwt  0xfffff80004e8da70  [vnlru]
   21     0     0     0  DL      (threaded)                  [bufdaemon]
100081                   D       qsleep  0xffffffff8282ae00  [bufdaemon]
100086                   D       -       0xffffffff8220ae00  [bufspacedaemon-0]
100098                   D       sdflush 0xfffff8002306ace8  [/ worker]
   20     0     0     0  DL      psleep  0xffffffff82852c08  [vmdaemon]
   19     0     0     0  DL      (threaded)                  [pagedaemon]
100079                   D       psleep  0xffffffff82847078  [dom0]
100087                   D       launds  0xffffffff82847084  [laundry: dom0]
100088                   D       umarcl  0xffffffff815c9ef0  [uma]
   18     0     0     0  DL      -       0xffffffff82570c78  [rand_harvestq]
   17     0     0     0  DL      waiting 0xffffffff82e34828  [sctp_iterator]
   16     0     0     0  DL      pftm    0xffffffff8303e3c0  [pf purge]
   15     0     0     0  DL      -       0xffffffff8282845c  [soaiod4]
    9     0     0     0  DL      -       0xffffffff8282845c  [soaiod3]
    8     0     0     0  DL      -       0xffffffff8282845c  [soaiod2]
    7     0     0     0  DL      -       0xffffffff8282845c  [soaiod1]
    6     0     0     0  DL      (threaded)                  [cam]
100044                   D       -       0xffffffff82448140  [doneq0]
100045                   D       -       0xffffffff824480c0  [async]
100078                   D       -       0xffffffff82447f90  [scanner]
   14     0     0     0  DL      seqstat 0xfffff8000463c888  [sequencer 00]
    5     0     0     0  DL      crypto_ 0xfffff8000462ed80  [crypto returns 1]
    4     0     0     0  DL      crypto_ 0xfffff8000462ed30  [crypto returns 0]
    3     0     0     0  DL      crypto_ 0xffffffff828445a0  [crypto]
   13     0     0     0  DL      (threaded)                  [geom]
100035                   D       -       0xffffffff8271c120  [g_event]
100036                   D       -       0xffffffff8271c128  [g_up]
100037                   D       -       0xffffffff8271c130  [g_down]
    2     0     0     0  DL      (threaded)                  [KTLS]
100028                   D       -       0xfffff80004574600  [thr_0]
100029                   D       -       0xfffff80004574680  [thr_1]
   12     0     0     0  RL      (threaded)                  [intr]
100011                   I                                   [swi6: task queue]
100013                   I                                   [swi6: Giant taskq]
100018                   I                                   [swi5: fast taskq]
100030                   I                                   [swi4: clock (0)]
100031                   I                                   [swi4: clock (1)]
100032                   I                                   [swi1: netisr 0]
100033                   I                                   [swi3: vm]
100046                   I                                   [irq24: virtio_pci0]
100047                   I                                   [irq25: virtio_pci0]
100048                   I                                   [irq26: virtio_pci0]
100049                   I                                   [irq27: virtio_pci0]
100050                   I                                   [irq28: virtio_pci1]
100051                   I                                   [irq29: virtio_pci1]
100052                   I                                   [irq30: virtio_pci1]
100053                   I                                   [irq31: virtio_pci1]
100054                   RunQ                                [irq32: virtio_pci1]
100059                   I                                   [irq10: virtio_pci2]
100061                   I                                   [irq1: atkbd0]
100062                   I                                   [irq12: psm0]
100063                   I                                   [swi0: uart uart++]
100071                   I                                   [swi1: pf send]
100084                   I                                   [swi1: hpts]
100085                   I                                   [swi1: hpts]
   11     0     0     0  RL      (threaded)                  [idle]
100003                   CanRun                              [idle: cpu0]
100004                   Run     CPU 1                       [idle: cpu1]
    1     0     1     0  SLs     wait    0xfffff8000452a538  [init]
   10     0     0     0  DL      audit_w 0xffffffff82844ab0  [audit]
    0     0     0     0  DLs     (threaded)                  [kernel]
100000                   D       swapin  0xffffffff8271c6b0  [swapper]
100005                   D       -       0xfffff80004144800  [if_config_tqg_0]
100006                   D       -       0xfffff80004144700  [softirq_0]
100007                   D       -       0xfffff80004144600  [softirq_1]
100008                   D       -       0xfffff80004144500  [if_io_tqg_0]
100009                   D       -       0xfffff80004144400  [if_io_tqg_1]
100010                   D       -       0xfffff8000457a600  [pci_hp taskq]
100012                   D       -       0xfffff8000457a300  [inm_free taskq]
100014                   D       -       0xfffff8000457a000  [linuxkpi_irq_wq]
100015                   D       -       0xfffff80004574e00  [thread taskq]
100016                   D       -       0xfffff80004574d00  [in6m_free taskq]
100017                   D       -       0xfffff80004574c00  [aiod_kick taskq]
100019                   D       -       0xfffff80004574900  [kqueue_ctx taskq]
100020                   D       -       0xfffff80004574800  [linuxkpi_short_wq_0]
100021                   D       -       0xfffff80004574800  [linuxkpi_short_wq_1]
100022                   D       -       0xfffff80004574800  [linuxkpi_short_wq_2]
100023                   D       -       0xfffff80004574800  [linuxkpi_short_wq_3]
100024                   D       -       0xfffff80004574700  [linuxkpi_long_wq_0]
100025                   D       -       0xfffff80004574700  [linuxkpi_long_wq_1]
100026                   D       -       0xfffff80004574700  [linuxkpi_long_wq_2]
100027                   D       -       0xfffff80004574700  [linuxkpi_long_wq_3]
100034                   D       -       0xfffff80004574000  [firmware taskq]
100038                   D       -       0xfffff800045c1d00  [crypto_0]
100039                   D       -       0xfffff800045c1d00  [crypto_1]
100055                   D       -       0xfffff800045c1700  [vtnet0 rxq 0]
100056                   D       -       0xfffff800045c1600  [vtnet0 txq 0]
100057                   D       -       0xfffff800045c1500  [vtnet0 rxq 1]
100058                   D       -       0xfffff800045c1400  [vtnet0 txq 1]
100060                   D       vtbslp  0xfffff80004972100  [virtio_balloon]
100064                   D       -       0xfffff80004973a00  [mca taskq]
100066                   D       -       0xffffffff81e20680  [deadlkres]
100073                   D       -       0xfffff80004c3e700  [acpi_task_0]
100074                   D       -       0xfffff80004c3e700  [acpi_task_1]
100075                   D       -       0xfffff80004c3e700  [acpi_task_2]
100077                   D       -       0xfffff800045c1c00  [CAM taskq]
db> show all locks
db> show malloc
              Type        InUse        MemUse     Requests
           pf_hash            5        11524K            5
            devbuf         4216         4340K         4241
          tcp_hpts            5         3201K            5
         sysctloid        33718         1992K        33785
             vtbuf           24         1968K           46
              kobj          332         1328K          492
            newblk          583         1170K          601
          vfscache            3         1025K            3
               pcb           23          537K           77
          inodedep           50          531K           71
         ufs_quota            1          512K            1
          vfs_hash            1          512K            1
           callout            2          512K            2
              intr            4          472K            4
           subproc          101          205K          841
            acpica         1674          184K        55406
         vnet_data            1          168K            1
           tidhash            3          141K            3
           pagedep           14          132K           18
        tfo_ccache            1          128K            1
               sem            4          106K            4
            DEVFS1          103          103K          112
            linker          294          102K          318
               bus          995           81K         3509
          mtx_pool            2           72K            2
          syncache            1           68K            1
          acpitask            1           64K            1
       ddb_capture            1           64K            1
            module          508           64K          508
           kdtrace          166           33K          906
              temp           18           33K         1605
         hostcache            1           32K            1
               shm            1           32K            1
            DEVFS3          122           31K          132
              umtx          242           31K          242
               msg            4           30K            4
              vmem            3           26K            4
        gtaskqueue           18           26K           18
            kbdmux            6           22K            6
        DEVFS_RULE           56           20K           56
               BPF           10           18K           10
         ufs_mount            5           17K            6
              proc            3           17K            3
               tty           16           16K           16
           ithread           99           16K           99
            bus-sc           33           14K         1719
            KTRACE          100           13K          100
              kenv           94           12K           94
      eventhandler          133           12K          133
            ifaddr           30           12K           32
          routetbl           50           11K          176
              rman           84           10K          425
              GEOM           60           10K          489
         bmsafemap            3            9K           40
              UART           12            9K           12
           devstat            4            9K            4
              ksem            1            8K            1
               rpc            2            8K            2
             shmfd            1            8K            1
       pfs_vncache            1            8K            1
         pfs_nodes           20            8K           20
     audit_evclass          236            8K          294
         taskqueue           60            7K           60
            sglist            5            7K            5
           CAM DEV            3            6K          510
              cred           23            6K          234
         CAM queue            5            6K         1528
       ufs_dirhash           24            5K           24
               UMA          265            5K          265
            dirrem           17            5K           28
            plimit           17            5K          322
                vt           11            5K           11
             ifnet            3            5K            3
           memdesc            1            4K            1
               MCA           32            4K           32
             evdev            4            4K            4
          filedesc            1            4K            1
           acpisem           28            4K           28
             hhook           13            4K           13
       ether_multi           40            4K           50
            diradd           25            4K           36
           lltable           11            4K           11
          pf_ifnet            5            3K            6
       fpukern_ctx            3            3K            3
         in6_multi           25            3K           25
            kqueue           46            3K          788
           pwddesc           46            3K          786
          terminal           11            3K           11
           session           20            3K           31
           uidinfo            3            3K            8
        local_apic            1            2K            1
           io_apic            1            2K            1
         ipsec-saq            2            2K            2
             selfd           27            2K        11195
         proc-args           39            2K          488
            Unitno           27            2K           39
           CAM XPT           22            2K          543
             lockf           15            2K           22
       ipsecpolicy            2            2K            2
           acpidev           20            2K           20
               msi            9            2K            9
             clone            9            2K            9
           softdep            1            1K            1
            sahead            1            1K            1
          secasvar            1            1K            1
       vnodemarker            2            1K            8
      NFSD session            1            1K            1
        CAM periph            4            1K          271
            select            7            1K           29
             ipsec            3            1K            3
          indirdep            3            1K            3
             nhops            6            1K            6
         toponodes            6            1K            6
            isadev            6            1K            6
             mount           16            1K           89
          pci_link           10            1K           10
          sctp_ifa            5            1K            6
            crypto            4            1K            4
            ip6ndp            4            1K            5
 encap_export_host           12            1K           12
         newdirblk            4            1K            8
             mkdir            4            1K           16
          in_multi            2            1K            4
              pfil            4            1K            4
           CAM SIM            2            1K            2
              cdev            2            1K            2
    chacha20random            1            1K            1
       inpcbpolicy           10            1K          137
               osd            3            1K           10
          sctp_ifn            2            1K            6
      NFSD lckfile            1            1K            1
     NFSD V4client            1            1K            1
            DEVFSP            4            1K            9
             DEVFS            9            1K           10
               mld            2            1K            2
              igmp            2            1K            2
            vnodes            1            1K            1
              ktls            1            1K            1
            feeder            7            1K            7
           tcpfunc            3            1K            3
        loginclass            3            1K            7
            prison            6            1K            6
             linux            5            1K            6
        aesni_data            2            1K            2
            apmdev            1            1K            1
          atkbddev            2            1K            2
     CAM dev queue            2            1K            2
 CAM I/O Scheduler            1            1K            1
             xform            2            1K           49
          CAM path            4            1K         1034
          procdesc            1            1K            6
          pmchooks            1            1K            1
          nexusdev            7            1K            7
            soname            4            1K         3231
          filecaps            4            1K           66
               tun            3            1K            3
          sctp_vrf            1            1K            1
              vnet            1            1K            1
           entropy            2            1K           35
          acpiintr            1            1K            1
               pmc            1            1K            1
              cpus            2            1K            2
    vnet_data_free            1            1K            1
           Per-cpu            1            1K            1
          freework            1            1K           26
          p1003.1b            1            1K            1
          pf_table            0            0K            0
           pf_rule            0            0K            0
           pf_altq            0            0K            0
           pf_osfp            0            0K            0
           pf_temp            0            0K            0
            tcp_do            0            0K            0
           tcp_fsb            0            0K            0
            mqdata            0            0K            0
        sctp_mcore            0            0K            0
        sctp_socko            0            0K            0
         sctp_iter            0            0K            3
         sctp_mvrf            0            0K            0
         sctp_timw            0            0K            0
         sctp_cpal            0            0K            0
         sctp_cmsg            0            0K            0
         sctp_stre            0            0K            0
         sctp_athi            0            0K            0
         sctp_athm            0            0K            0
         sctp_atky            0            0K            0
         sctp_atcl            0            0K            0
         sctp_a_it            0            0K            3
         sctp_aadr            0            0K            0
         sctp_stro            0            0K            0
         sctp_stri            0            0K            0
          sctp_map            0            0K            0
       NFSD string            0            0K            0
       NFSD V4lock            0            0K            0
        madt_table            0            0K            2
          smartpqi            0            0K            0
      NFSD V4state            0            0K            0
     NFSD srvcache            0            0K            0
       msdosfs_fat            0            0K            0
     msdosfs_mount            0            0K            0
      msdosfs_node            0            0K            0
              iavf            0            0K            0
               ixl            0            0K            0
            DEVFS4            0            0K            0
            DEVFS2            0            0K            0
            gntdev            0            0K            0
       privcmd_dev            0            0K            0
        ice-resmgr            0            0K            0
         ice-osdep            0            0K            0
               ice            0            0K            0
             axgbe            0            0K            0
        evtchn_dev            0            0K            0
          xenstore            0            0K            0
         ciss_data            0            0K            0
         BACKLIGHT            0            0K            0
               xnb            0            0K            0
              xbbd            0            0K            0
               xbd            0            0K            0
           Balloon            0            0K            0
          sysmouse            0            0K            0
            vtfont            0            0K            0
          xen_intr            0            0K            0
           xen_hvm            0            0K            0
         legacydrv            0            0K            0
            qpidrv            0            0K            0
           ath_hal            0            0K            0
            athdev            0            0K            0
      dmar_idpgtbl            0            0K            0
          dmar_dom            0            0K            0
          dmar_ctx            0            0K            0
           ata_pci            0            0K            0
           ata_dma            0            0K            0
       ata_generic            0            0K            0
              isci            0            0K            0
      iommu_dmamap            0            0K            0
               amr            0            0K            0
     hyperv_socket            0            0K            0
           bxe_ilt            0            0K            0
            xenbus            0            0K            0
            pvscsi            0            0K            0
           scsi_da            0            0K           69
     vm_fictitious            0            0K            0
            ata_da            0            0K            0
           scsi_ch            0            0K            0
           scsi_cd            0            0K            0
       AHCI driver            0            0K            0
            USBdev            0            0K            0
               USB            0            0K            0
               agp            0            0K            0
           nvme_da            0            0K            0
           UMAHash            0            0K            0
           acpipwr            0            0K            0
         acpi_perf            0            0K            0
         vm_pgdata            0            0K            0
           jblocks            0            0K            0
          savedino            0            0K           17
          sentinel            0            0K            0
            jfsync            0            0K            0
            jtrunc            0            0K            0
             sbdep            0            0K            2
           jsegdep            0            0K            0
              jseg            0            0K            0
         jfreefrag            0            0K            0
          jfreeblk            0            0K            0
           jnewblk            0            0K            0
            jmvref            0            0K            0
           jremref            0            0K            0
           jaddref            0            0K            0
           freedep            0            0K            0
          freefile            0            0K            9
          freeblks            0            0K           25
          freefrag            0            0K            7
        allocindir            0            0K            0
       allocdirect            0            0K            0
          ufs_trim            0            0K            0
           mactemp            0            0K            0
     audit_trigger            0            0K            0
 audit_pipe_presel            0            0K            0
     audit_pipeent            0            0K            0
        audit_pipe            0            0K            0
      audit_evname            0            0K            0
         audit_bsm            0            0K            0
      audit_gidset            0            0K            0
        audit_text            0            0K            0
        audit_path            0            0K            0
        audit_data            0            0K            0
        audit_cred            0            0K            0
            twsbuf            0            0K            0
        MLX5EEPROM            0            0K            0
        MLX5EEPROM            0            0K            0
        MLX5EEPROM            0            0K            0
        MLX5EEPROM            0            0K            0
         MLX5E_TLS            0            0K            0
        MLX5EEPROM            0            0K            0
        MLX5EEPROM            0            0K            0
        MLX5EEPROM            0            0K            0
            MLX5EN            0            0K            0
        MLX5EEPROM            0            0K            0
        MLX5EEPROM            0            0K            0
        MLX5EEPROM            0            0K            0
          MLX5DUMP            0            0K            0
        MLX5EEPROM            0            0K            0
        MLX5EEPROM            0            0K            0
          seq_file            0            0K            0
             radix            0            0K            0
               idr            0            0K            0
            lkpifw            0            0K            0
               NLM            0            0K            0
    ipsec-spdcache            0            0K            0
         ipsec-reg            0            0K            0
        ipsec-misc            0            0K            0
      ipsecrequest            0            0K            0
            ip6opt            0            0K            3
       ip6_msource            0            0K            0
      ip6_moptions            0            0K            0
       in6_mfilter            0            0K            0
             frag6            0            0K            0
            tcplog            0            0K            0
        tcp_hwpace            0            0K            0
      twe_commands            0            0K            0
               LRO            0            0K            0
      newreno data            0            0K            0
        ip_msource            0            0K            0
       ip_moptions            0            0K            0
        in_mfilter            0            0K            0
              ipid            0            0K            0
         80211scan            0            0K            0
      80211ratectl            0            0K            0
        80211power            0            0K            0
       80211nodeie            0            0K            0
         80211node            0            0K            0
      80211mesh_gt            0            0K            0
      80211mesh_rt            0            0K            0
         80211perr            0            0K            0
         80211prep            0            0K            0
         80211preq            0            0K            0
          80211dfs            0            0K            0
       80211crypto            0            0K            0
          80211vap            0            0K            0
             iflib            0            0K            0
              vlan            0            0K            0
               gif            0            0K            0
           ifdescr            0            0K            0
              zlib            0            0K            0
           fadvise            0            0K            0
           VN POLL            0            0K            0
      twa_commands            0            0K            0
            statfs            0            0K          195
     namei_tracker            0            0K            0
       export_host            0            0K            0
        cl_savebuf            0            0K            6
       tcp_log_dev            0            0K            0
      midi buffers            0            0K            0
             mixer            0            0K            0
              ac97            0            0K            0
             hdacc            0            0K            0
              hdac            0            0K            0
              hdaa            0            0K            0
         acpicmbat            0            0K            0
       SIIS driver            0            0K            0
           CAM CCB            0            0K         1739
               PUC            0            0K            0
          ppbusdev            0            0K            0
agtiapi_MemAlloc malloc            0            0K            0
    osti_cacheable            0            0K            0
          tempbuff            0            0K            0
            biobuf            0            0K            0
              aios            0            0K            0
               lio            0            0K            0
               acl            0            0K            0
          tempbuff            0            0K            0
          mbuf_tag            0            0K           27
ag_tgt_map_t malloc            0            0K            0
ag_slr_map_t malloc            0            0K            0
lDevFlags * malloc            0            0K            0
tiDeviceHandle_t * malloc            0            0K            0
ag_portal_data_t malloc            0            0K            0
ag_device_t malloc            0            0K            0
     STLock malloc            0            0K            0
          CCB List            0            0K            0
            sr_iov            0            0K            0
               OCS            0            0K            0
               OCS            0            0K            0
              nvme            0            0K            0
               nvd            0            0K            0
            netmap            0            0K            0
            mwldev            0            0K            0
        MVS driver            0            0K            0
     CAM ccb queue            0            0K            0
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          mpt_user            0            0K            0
          mps_user            0            0K            0
              accf            0            0K            0
               pts            0            0K            0
               iov            0            0K        13509
          ioctlops            0            0K           86
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           Witness            0            0K            0
             stack            0            0K            0
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               mps            0            0K            0
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            MPRSAS            0            0K            0
               mpr            0            0K            0
            mfibuf            0            0K            0
              sbuf            0            0K          288
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              SWAP            0            0K            0
           malodev            0            0K            0
               LED            0            0K            0
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            sysctl            0            0K            3
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              rctl            0            0K            0
          ix_sriov            0            0K            0
        aacraidcam            0            0K            0
       aacraid_buf            0            0K            0
                ix            0            0K            0
            ipsbuf            0            0K            0
             cache            0            0K            0
            iirbuf            0            0K            0
          kcovinfo            0            0K            0
      prison_racct            0            0K            0
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             sigio            0            0K            1
filedesc_to_leader            0            0K            0
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       tty console            0            0K            0
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       isofs_mount            0            0K            0
     tr_raid5_data            0            0K            0
    tr_raid1e_data            0            0K            0
     tr_raid1_data            0            0K            0
     tr_raid0_data            0            0K            0
    tr_concat_data            0            0K            0
       md_sii_data            0            0K            0
   md_promise_data            0            0K            0
    md_nvidia_data            0            0K            0
   md_jmicron_data            0            0K            0
     md_intel_data            0            0K            0
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         raid_data            0            0K           72
     geom_flashmap            0            0K            0
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db> show uma
              Zone   Size    Used    Free    Requests  Sleeps  Bucket  Total Mem    XFree
   mbuf_jumbo_page   4096    8320     777       13387       0     254   37261312        0
              pbuf   2624       0     989           0       0       2    2595136        0
              mbuf    256    8579     796       15278       0     254    2400000        0
          BUF TRIE    144     174   13294         420       0      62    1939392        0
        malloc-384    384    4116       4        4116       0      30    1582080        0
        malloc-128    128   11051      47       11062       0     126    1420544        0
       malloc-4096   4096     332       1         492       0       2    1363968        0
       UMA Slabs 0    112    9885      12        9885       0     126    1108464        0
         FFS inode   1160     499      19         509       0       8     600880        0
            lkpimm    160       1    2324           1       0      62     372000        0
          lkpicurr    160       2    2323           2       0      62     372000        0
        RADIX NODE    144    2062     175       20190       0      62     322128        0
         malloc-64     64    4020     201        5017       0     254     270144        0
      malloc-65536  65536       4       0           4       0       1     262144        0
         VM OBJECT    264     892      53       12703       0      30     249480        0
             VNODE    448     529      20         541       0      30     245952        0
        256 Bucket   2048     103      17       10130       0       8     245760        0
       malloc-4096   4096      56       2         796       0       2     237568        0
         malloc-16     16   13756     244       13827       0     254     224000        0
            DEVCTL   1024       0     216         116       0       0     221184        0
            THREAD   1808     119       2         119       0       8     218768        0
      malloc-65536  65536       1       2         183       0       1     196608        0
         UMA Zones    768     237       2         237       0      16     183552        0
        malloc-256    256     680      10        1012       0      62     176640        0
         malloc-32     32    5219     199        6013       0     254     173376        0
        malloc-128    128    1282      51       29050       0     126     170624        0
      malloc-65536  65536       2       0           2       0       1     131072        0
       FFS2 dinode    256     499      11         508       0      62     130560        0
        malloc-128    128     928      33        1906       0     126     123008        0
          ksiginfo    112      38    1006          53       0     126     116928        0
         MAP ENTRY     96     836     382       38044       0     126     116928        0
       malloc-1024   1024     104       8         116       0      16     114688        0
         vmem btag     56    1896      36        1896       0     254     108192        0
       malloc-8192   8192       9       4         138       0       1     106496        0
       S VFS Cache    104     966      48        1006       0     126     105456        0
          UMA Kegs    384     222       1         222       0      30      85632        0
      malloc-16384  16384       4       1         181       0       1      81920        0
       malloc-2048   2048       2      38        1741       0       8      81920        0
           VMSPACE   2544      23       7         764       0       4      76320        0
              PROC   1336      45       9         785       0       8      72144        0
      mbuf_cluster   2048      30       2          30       0     254      65536        0
      malloc-65536  65536       1       0           1       0       1      65536        0
      malloc-65536  65536       0       1           8       0       1      65536        0
      malloc-65536  65536       1       0           1       0       1      65536        0
      malloc-32768  32768       0       2         130       0       1      65536        0
      malloc-32768  32768       2       0           2       0       1      65536        0
       malloc-4096   4096      14       1         109       0       2      61440        0
         filedesc0   1072      46      10         786       0       8      60032        0
             g_bio    408       0     140        4430       0      30      57120        0
        128 Bucket   1024      38      17         605       0      16      56320        0
        malloc-256    256     180      15         756       0      62      49920        0
      malloc-16384  16384       3       0           3       0       1      49152        0
         malloc-64     64     526     167       14820       0     254      44352        0
        malloc-128    128     292      49         451       0     126      43648        0
        malloc-256    256     140      25         157       0      62      42240        0
         32 Bucket    256      45     120        3363       0      62      42240        0
            clpbuf   2624       0      16          18       0      16      41984        0
       malloc-8192   8192       5       0           5       0       1      40960        0
       malloc-2048   2048       4      16         511       0       8      40960        0
        malloc-128    128     118     192         419       0     126      39680        0
           DIRHASH   1024      34       2          34       0      16      36864        0
             NAMEI   1024       1      35       11992       0      16      36864        0
        malloc-512    512       4      68         512       0      30      36864        0
            pcpu-8      8    4190     418        4218       0     254      36864        0
         64 Bucket    512      57      15        1339       0      30      36864        0
        malloc-384    384      69      21         102       0      30      34560        0
      malloc-32768  32768       1       0           1       0       1      32768        0
       malloc-8192   8192       3       1           5       0       1      32768        0
       malloc-4096   4096       7       1         539       0       2      32768        0
           pcpu-64     64     480      32         480       0     254      32768        0
         malloc-64     64     485      19         702       0     254      32256        0
        malloc-384    384      71       9          71       0      30      30720        0
        malloc-256    256      83      37         138       0      62      30720        0
            socket    944      18      14        1253       0     254      30208        0
       malloc-1024   1024      10      14        1078       0      16      24576        0
       malloc-1024   1024      18       6          22       0      16      24576        0
            ttyinq    160     135      15         300       0      62      24000        0
           ttyoutq    256      72      18         160       0      62      23040        0
        malloc-384    384      52       8          52       0      30      23040        0
       malloc-4096   4096       3       2         199       0       2      20480        0
       malloc-2048   2048       6       4          83       0       8      20480        0
         malloc-64     64      65     250       11262       0     254      20160        0
         TURNSTILE    136     122      25         122       0      62      19992        0
       Mountpoints   2752       2       5           2       0       4      19264        0
      malloc-16384  16384       1       0           1       0       1      16384        0
       malloc-8192   8192       2       0           2       0       1      16384        0
       malloc-2048   2048       6       2           6       0       8      16384        0
       malloc-1024   1024      12       4          12       0      16      16384        0
       malloc-1024   1024      11       5          11       0      16      16384        0
         malloc-64     64     127     125         155       0     254      16128        0
         malloc-32     32     336     168         434       0     254      16128        0
          8 Bucket     80      36     164         394       0     126      16000        0
              pipe    744       7      13         284       0      16      14880        0
        SLEEPQUEUE     88     122      38         122       0     126      14080        0
       malloc-2048   2048       3       3         268       0       8      12288        0
       malloc-2048   2048       5       1         196       0       8      12288        0
       malloc-1024   1024       5       7          21       0      16      12288        0
       malloc-1024   1024       8       4           9       0      16      12288        0
        malloc-512    512       3      21         189       0      30      12288        0
         malloc-64     64     115      74        1622       0     254      12096        0
         malloc-64     64      24     165         292       0     254      12096        0
         malloc-32     32      70     308        3964       0     254      12096        0
             Files     80      72      78        6501       0     126      12000        0
         udp_inpcb    488       6      18         126       0     254      11712        0
              kenv    258      15      30        1049       0      30      11610        0
        malloc-256    256      14      31         102       0      62      11520        0
        malloc-256    256      13      32         350       0      62      11520        0
       malloc-8192   8192       1       0           1       0       1       8192        0
       malloc-8192   8192       1       0           1       0       1       8192        0
       malloc-8192   8192       1       0           1       0       1       8192        0
       malloc-2048   2048       3       1           3       0       8       8192        0
       malloc-1024   1024       0       8           4       0      16       8192        0
        malloc-512    512       6      10          12       0      30       8192        0
        malloc-512    512       8       8           8       0      30       8192        0
           rtentry    176      13      33          17       0      62       8096        0
              PGRP     88      20      72          31       0     126       8096        0
          rl_entry     40      31     171          31       0     254       8080        0
        sctp_laddr     48       0     168           4       0     254       8064        0
             udpcb     32       6     246         126       0     254       8064        0
               PWD     32      10     242         100       0     254       8064        0
         malloc-64     64       8     118           9       0     254       8064        0
         malloc-32     32       6     246          11       0     254       8064        0
         malloc-32     32      37     215         769       0     254       8064        0
         malloc-32     32      30     222         189       0     254       8064        0
         16 Bucket    144      34      22         200       0      62       8064        0
          4 Bucket     48       6     162          52       0     254       8064        0
          2 Bucket     32      41     211         492       0     254       8064        0
      vtnet_tx_hdr     24       1     333        1060       0     254       8016        0
         malloc-16     16       1     499           4       0     254       8000        0
         malloc-16     16      20     480          59       0     254       8000        0
         malloc-16     16     298     202         504       0     254       8000        0
         malloc-16     16      24     476          25       0     254       8000        0
         malloc-16     16     188     312        1443       0     254       8000        0
         malloc-16     16      26     474       25396       0     254       8000        0
         malloc-16     16      14     486          20       0     254       8000        0
        malloc-128    128       5      57          11       0     126       7936        0
        malloc-128    128      39      23          55       0     126       7936        0
        malloc-128    128      10      52          79       0     126       7936        0
             ripcb    488       1      15           4       0     254       7808        0
     routing nhops    256      10      20          17       0      62       7680        0
             unpcb    256       7      23        1099       0     254       7680        0
       mbuf_packet    256       0      30          93       0     254       7680        0
        malloc-384    384       0      20          19       0      30       7680        0
        malloc-384    384       5      15         352       0      30       7680        0
        malloc-384    384      20       0          20       0      30       7680        0
        malloc-256    256      20      10         617       0      62       7680        0
        malloc-256    256      21       9         293       0      62       7680        0
     FPU_save_area    832       1       8           1       0      16       7488        0
             tcpcb   1064       3       4           7       0     254       7448        0
            cpuset    104       7      55           7       0     126       6448        0
 epoch_record pcpu    256       4      12           4       0      62       4096        0
       malloc-4096   4096       0       1           3       0       2       4096        0
       malloc-2048   2048       1       1           1       0       8       4096        0
        malloc-512    512       0       8           2       0      30       4096        0
           pcpu-16     16       7     249           7       0     254       4096        0
         hostcache     64       1      62           1       0     254       4032        0
          syncache    168       0      24           5       0     254       4032        0
         malloc-32     32       0     126           2       0     254       4032        0
         malloc-32     32     104      22         228       0     254       4032        0
             KNOTE    160       0      25           8       0      62       4000        0
         tcp_inpcb    488       3       5           7       0     254       3904        0
       UMA Slabs 1    176       8      14           8       0      62       3872        0
        malloc-384    384       1       9           2       0      30       3840        0
            mqnode    416       3       6           3       0      30       3744        0
        KMAP ENTRY     96      12      27          12       0       0       3744        0
              vmem   1856       1       1           1       0       8       3712        0
           SMR CPU     32       3      60           3       0     254       2016        0
        SMR SHARED     24       3      60           3       0     254       1512        0
       FFS1 dinode    128       0       0           0       0     126          0        0
             swblk    136       0       0           0       0      62          0        0
          swpctrie    144       0       0           0       0      62          0        0
   sctp_asconf_ack     48       0       0           0       0     254          0        0
       sctp_asconf     40       0       0           0       0     254          0        0
sctp_stream_msg_out    112       0       0           0       0     254          0        0
        sctp_readq    152       0       0           0       0     254          0        0
        sctp_chunk    152       0       0           0       0     254          0        0
        sctp_raddr    736       0       0           0       0     254          0        0
         sctp_asoc   2288       0       0           0       0     254          0        0
           sctp_ep   1280       0       0           0       0     254          0        0
   pf state scrubs     40       0       0           0       0     254          0        0
   pf frag entries     40       0       0           0       0     254          0        0
          pf frags    248       0       0           0       0      62          0        0
  pf table entries    160       0       0           0       0      62          0        0
pf table entry counters     64       0       0           0       0     254          0        0
   pf source nodes    136       0       0           0       0     254          0        0
     pf state keys     88       0       0           0       0     126          0        0
         pf states    296       0       0           0       0     254          0        0
           pf tags    104       0       0           0       0     126          0        0
          pf mtags     48       0       0           0       0     254          0        0
       tcp_bbr_pcb    832       0       0           0       0      16          0        0
       tcp_bbr_map    128       0       0           0       0     126          0        0
      tcp_rack_pcb    832       0       0           0       0      16          0        0
      tcp_rack_map    112       0       0           0       0     126          0        0
    IPsec SA lft_c     16       0       0           0       0     254          0        0
     udplite_inpcb    488       0       0           0       0     254          0        0
      tcp_log_node    120       0       0           0       0     126          0        0
    tcp_log_bucket    176       0       0           0       0      62          0        0
           tcp_log    416       0       0           0       0     254          0        0
          tcpreass     48       0       0           0       0     254          0        0
tfo_ccache_entries     80       0       0           0       0     126          0        0
               tfo      4       0       0           0       0     254          0        0
          sackhole     32       0       0           0       0     254          0        0
             tcptw     88       0       0           0       0     254          0        0
               ipq     56       0       0           0       0     254          0        0
            itimer    352       0       0           0       0      30          0        0
            AIOLIO    272       0       0           0       0      30          0        0
             AIOCB    552       0       0           0       0      16          0        0
              AIOP     32       0       0           0       0     254          0        0
               AIO    208       0       0           0       0      62          0        0
        TMPFS node    224       0       0           0       0      62          0        0
           NCLNODE    584       0       0           0       0      16          0        0
        mqnotifier    216       0       0           0       0      62          0        0
            mvdata     64       0       0           0       0     254          0        0
            mqueue    248       0       0           0       0      62          0        0
     LTS VFS Cache    360       0       0           0       0      30          0        0
       L VFS Cache    320       0       0           0       0      30          0        0
     STS VFS Cache    144       0       0           0       0      62          0        0
           cryptop    280       0       0           0       0      30          0        0
  linux_dma_object     24       0       0           0       0     254          0        0
  linux_dma_pctrie    144       0       0           0       0      62          0        0
   IOMMU_MAP_ENTRY    120       0       0           0       0     126          0        0
      ktls_session    192       0       0           0       0      62          0        0
    mbuf_jumbo_16k  16384       0       0           0       0     254          0        0
     mbuf_jumbo_9k   9216       0       0           0       0     254          0        0
      audit_record   1280       0       0           0       0       8          0        0
         domainset     40       0       0           0       0     254          0        0
        MAC labels     40       0       0           0       0     254          0        0
            vnpbuf   2624       0       0           0       0      64          0        0
            mdpbuf   2624       0       0           0       0       3          0        0
           nfspbuf   2624       0       0           0       0      16          0        0
            swwbuf   2624       0       0           0       0       8          0        0
            swrbuf   2624       0       0           0       0      16          0        0
          umtx_shm     88       0       0           0       0     126          0        0
           umtx pi     96       0       0           0       0     126          0        0
rangeset pctrie nodes    144       0       0           0       0      62          0        0
      malloc-65536  65536       0       0           0       0       1          0        0
      malloc-65536  65536       0       0           0       0       1          0        0
      malloc-32768  32768       0       0           0       0       1          0        0
      malloc-32768  32768       0       0           0       0       1          0        0
      malloc-32768  32768       0       0           0       0       1          0        0
      malloc-32768  32768       0       0           0       0       1          0        0
      malloc-32768  32768       0       0           0       0       1          0        0
      malloc-16384  16384       0       0           0       0       1          0        0
      malloc-16384  16384       0       0           0       0       1          0        0
      malloc-16384  16384       0       0           0       0       1          0        0
      malloc-16384  16384       0       0           0       0       1          0        0
      malloc-16384  16384       0       0           0       0       1          0        0
       malloc-8192   8192       0       0           0       0       1          0        0
       malloc-4096   4096       0       0           0       0       2          0        0
       malloc-4096   4096       0       0           0       0       2          0        0
        malloc-512    512       0       0           0       0      30          0        0
        malloc-512    512       0       0           0       0      30          0        0
        malloc-512    512       0       0           0       0      30          0        0
           pcpu-32     32       0       0           0       0     254          0        0
            pcpu-4      4       0       0           0       0     254          0        0
            fakepg    104       0       0           0       0     126          0        0
          UMA Hash    256       0       0           0       0      62          0        0

Crashes (4):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets Title
ci-freebsd-main 2021/05/12 17:45 freebsd-src 8c39e25220bb 29b1aea5 console log report syz C panic: Assertion (cnp->cn_flags & (LOCKPARENT | WANTPARENT)) == 0 failed at /syzkaller/managers/main/kernel/sys/kern/vfs
ci-freebsd-main 2021/05/12 17:03 freebsd-src 8c39e25220bb 29b1aea5 console log report syz panic: Assertion (cnp->cn_flags & (LOCKPARENT | WANTPARENT)) == 0 failed at /syzkaller/managers/main/kernel/sys/kern/vfs
ci-freebsd-main 2021/05/12 17:33 freebsd-src 8c39e25220bb 29b1aea5 console log report panic: Assertion (cnp->cn_flags & (LOCKPARENT | WANTPARENT)) == 0 failed at /syzkaller/managers/main/kernel/sys/kern/vfs
ci-freebsd-main 2021/05/12 16:51 freebsd-src 8c39e25220bb 29b1aea5 console log report panic: Assertion (cnp->cn_flags & (LOCKPARENT | WANTPARENT)) == 0 failed at /syzkaller/managers/main/kernel/sys/kern/vfs
* Struck through repros no longer work on HEAD.