syzbot


panic: _finstall: invalid rights

Status: closed as dup on 2020/03/19 16:12
Reported-by: syzbot+fae2295974a920067cdf@syzkaller.appspotmail.com
First crash: 1529d, last: 1529d
Duplicate of
Title Repro Cause bisect Fix bisect Count Last Reported
panic: cap_rights_is_vset:LINE (3) 1 1481d 1481d

Sample crash report:
panic: _finstall: invalid rights
cpuid = 1
time = 1579437424
KDB: stack backtrace:
db_trace_self_wrapper() at db_trace_self_wrapper+0x47/frame 0xfffffe00245327d0
vpanic() at vpanic+0x1ce/frame 0xfffffe0024532840
panic() at panic+0x43/frame 0xfffffe00245328a0
_finstall() at _finstall+0x39c/frame 0xfffffe00245328f0
finstall() at finstall+0x139/frame 0xfffffe0024532950
falloc_caps() at falloc_caps+0x66/frame 0xfffffe00245329b0
kern_accept4() at kern_accept4+0x1c7/frame 0xfffffe0024532a50
accept1() at accept1+0x74/frame 0xfffffe0024532ab0
ia32_syscall() at ia32_syscall+0x48c/frame 0xfffffe0024532bf0
int0x80_syscall_common() at int0x80_syscall_common+0x9c/frame 0x814251e
KDB: enter: panic
[ thread pid 9309 tid 100402 ]
Stopped at      kdb_enter+0x67: movq    $0,0x1466f66(%rip)
db> 
db> set $lines = 0
db> set $maxwidth = 0
db> show registers
cs                        0x20
ds                        0x3b  ll+0x1a
es                        0x3b  ll+0x1a
fs                        0x13
gs                        0x1b
ss                           0
rax                       0x12
rcx         0xfffffe0029a00000
rdx                    0x3ffff
rbx                          0
rsp         0xfffffe00245327b0
rbp         0xfffffe00245327d0
rsi                    0x40001
rdi         0xffffffff810ba076  vprintf+0x176
r8                           0
r9                  0xffffffff
r10                          0
r11         0xfffff8001946cbd0
r12         0xffffffff82068d90  ddb_dbbe
r13                          0
r14         0xffffffff819360e0
r15         0xffffffff819360e0
rip         0xffffffff810af137  kdb_enter+0x67
rflags                0x200082  kernphys+0x82
kdb_enter+0x67: movq    $0,0x1466f66(%rip)
db> show proc
Process 9309 (syz-executor.2) at 0xfffff8003ade3a60:
 state: NORMAL
 uid: 0  gids: 0, 0, 5
 parent: pid 773 at 0xfffff80003544530
 ABI: FreeBSD ELF32
 arguments: /root/syz-executor.2
 reaper: 0xfffff800032fa530 reapsubtree: 1
 sigparent: 20
 vmspace: 0xfffff80019067000
   (map 0xfffff80019067000)
   (map.pmap 0xfffff800190670c0)
   (pmap 0xfffff80019067120)
 threads: 4
100854                   RunQ                                syz-executor.2
100401                   S       accept  0xfffff80003ee14f0  syz-executor.2
100402                   Run     CPU 1                       syz-executor.2
100414                   Run     CPU 0                       syz-executor.2
db> ps
  pid  ppid  pgrp   uid  state   wmesg   wchan               cmd
 9312   780   780     0  S       (threaded)                  syz-executor.3
100897                   S       nanslp  0xffffffff824feca1  syz-executor.3
100409                   S       accept  0xfffff80003ee7878  syz-executor.3
100410                   S       connec  0xfffff80003eec0f0  syz-executor.3
100412                   S       accept  0xfffff80003ede4f0  syz-executor.3
100413                   S       uwait   0xfffff80003a47000  syz-executor.3
 9311   769   769     0  S       (threaded)                  syz-executor.1
100114                   S       nanslp  0xffffffff824feca1  syz-executor.1
100400                   S       connec  0xfffff80003e67478  syz-executor.1
100407                   S       accept  0xfffff80003ee6168  syz-executor.1
100408                   S       uwait   0xfffff80003a4ac00  syz-executor.1
 9310   768   768     0  S       (threaded)                  syz-executor.0
100845                   S       nanslp  0xffffffff824feca1  syz-executor.0
100403                   S       accept  0xfffff80003ee5168  syz-executor.0
100404                   S       connec  0xfffff80003ee4800  syz-executor.0
100405                   S       accept  0xfffff80003ede168  syz-executor.0
100406                   S       uwait   0xfffff80003a47300  syz-executor.0
 9309   773   773     0  R       (threaded)                  syz-executor.2
100854                   RunQ                                syz-executor.2
100401                   S       accept  0xfffff80003ee14f0  syz-executor.2
100402                   Run     CPU 1                       syz-executor.2
100414                   Run     CPU 0                       syz-executor.2
 3324     1  3324    65  Ss      select  0xfffff80003c84d40  dhclient
 2716     1  2716     0  Ss      select  0xfffff800194185c0  dhclient
 2711     1  2711     0  Ss      select  0xfffff80019418540  dhclient
 2687     1  2687    65  Ss      select  0xfffff80003c84dc0  dhclient
 2074     1  2074     0  Ss      select  0xfffff80019418640  dhclient
 2071     1  2071     0  Ss      select  0xfffff80003c84e40  dhclient
 2052     1  2052    65  Ss      select  0xfffff80003d26640  dhclient
 1373     1  1373     0  Ss      select  0xfffff80003d245c0  dhclient
 1370     1  1370     0  Ss      select  0xfffff80003d482c0  dhclient
 1351     1  1351    65  Ss      select  0xfffff80003d266c0  dhclient
  816     1   816     0  Ss      select  0xfffff80003d23cc0  dhclient
  811     1   811     0  Ss      select  0xfffff80003d26740  dhclient
  780   766   780     0  Ss      nanslp  0xffffffff824feca1  syz-executor.3
  773   766   773     0  Ss      nanslp  0xffffffff824feca1  syz-executor.2
  769   766   769     0  Ss      nanslp  0xffffffff824feca0  syz-executor.1
  768   766   768     0  Ss      nanslp  0xffffffff824feca0  syz-executor.0
  766   764   764     0  S       (threaded)                  syz-fuzzer
100098                   S       uwait   0xfffff80003a48780  syz-fuzzer
100105                   S       uwait   0xfffff80003cd1180  syz-fuzzer
100106                   S       uwait   0xfffff80003cd1280  syz-fuzzer
100107                   S       uwait   0xfffff80003cd1380  syz-fuzzer
100108                   S       kqread  0xfffff80003b30d00  syz-fuzzer
100109                   S       uwait   0xfffff80003a47880  syz-fuzzer
100110                   S       uwait   0xfffff80003a47980  syz-fuzzer
100111                   S       uwait   0xfffff80003cd1480  syz-fuzzer
100112                   S       uwait   0xfffff80003a47d80  syz-fuzzer
100113                   S       uwait   0xfffff80003a47a80  syz-fuzzer
  764   762   764     0  Ss      pause   0xfffff8003a5fdb08  csh
  762   680   762     0  Ss      select  0xfffff80003d48240  sshd
  746     1   746     0  Ss+     ttyin   0xfffff800033f7cb0  getty
  745     1   745     0  Ss+     ttyin   0xfffff800033f8cb0  getty
  744     1   744     0  Ss+     ttyin   0xfffff80003aba0b0  getty
  743     1   743     0  Ss+     ttyin   0xfffff80003aba4b0  getty
  742     1   742     0  Ss+     ttyin   0xfffff80003aba8b0  getty
  741     1   741     0  Ss+     ttyin   0xfffff80003abacb0  getty
  740     1   740     0  Ss+     ttyin   0xfffff80003abb0b0  getty
  739     1   739     0  Ss+     ttyin   0xfffff80003abb4b0  getty
  738     1   738     0  Ss+     ttyin   0xfffff80003abb8b0  getty
  684     1   684     0  Ss      nanslp  0xffffffff824feca1  cron
  680     1   680     0  Ss      select  0xfffff80003d24640  sshd
  493     1   493     0  Ss      select  0xfffff80003d48cc0  syslogd
  422     1   422     0  Ss      select  0xfffff80003d483c0  devd
  421     1   421    65  Ss      select  0xfffff80003d246c0  dhclient
  336     1   336     0  Ss      select  0xfffff80003d248c0  dhclient
  333     1   333     0  Ss      select  0xfffff80003d247c0  dhclient
   21     0     0     0  DL      syncer  0xffffffff825d5118  [syncer]
   20     0     0     0  DL      vlruwt  0xfffff80003b01000  [vnlru]
   19     0     0     0  DL      (threaded)                  [bufdaemon]
100065                   D       qsleep  0xffffffff825d4618  [bufdaemon]
100070                   D       -       0xffffffff8200a980  [bufspacedaemon-0]
100080                   D       sdflush 0xfffff80003cf58e8  [/ worker]
   18     0     0     0  DL      psleep  0xffffffff825f0088  [vmdaemon]
   17     0     0     0  DL      (threaded)                  [pagedaemon]
100063                   D       psleep  0xffffffff8261cfd8  [dom0]
100068                   D       launds  0xffffffff8261cfe4  [laundry: dom0]
100069                   D       umarcl  0xffffffff8153ce00  [uma]
   16     0     0     0  DL      -       0xffffffff82359530  [rand_harvestq]
   15     0     0     0  DL      waiting 0xffffffff826625a0  [sctp_iterator]
    9     0     0     0  DL      -       0xffffffff825d401c  [soaiod4]
    8     0     0     0  DL      -       0xffffffff825d401c  [soaiod3]
    7     0     0     0  DL      -       0xffffffff825d401c  [soaiod2]
    6     0     0     0  DL      -       0xffffffff825d401c  [soaiod1]
    5     0     0     0  DL      (threaded)                  [cam]
100031                   D       -       0xffffffff82234940  [doneq0]
100062                   D       -       0xffffffff82234808  [scanner]
    4     0     0     0  DL      crypto_ 0xfffff800031f8e90  [crypto returns 1]
    3     0     0     0  DL      crypto_ 0xfffff800031f8e30  [crypto returns 0]
    2     0     0     0  DL      crypto_ 0xffffffff825ea0f8  [crypto]
   14     0     0     0  DL      seqstat 0xfffff80003362888  [sequencer 00]
   13     0     0     0  DL      (threaded)                  [geom]
100022                   D       -       0xffffffff8261b608  [g_event]
100023                   D       -       0xffffffff8261b618  [g_up]
100024                   D       -       0xffffffff8261b610  [g_down]
   12     0     0     0  WL      (threaded)                  [intr]
100006                   I                                   [swi5: fast taskq]
100010                   I                                   [swi6: task queue]
100011                   I                                   [swi6: Giant taskq]
100017                   I                                   [swi3: vm]
100018                   I                                   [swi4: clock (0)]
100019                   I                                   [swi4: clock (1)]
100020                   I                                   [swi1: netisr 0]
100032                   I                                   [irq24: virtio_pci0]
100033                   I                                   [irq25: virtio_pci0]
100034                   I                                   [irq26: virtio_pci0]
100035                   I                                   [irq27: virtio_pci0]
100036                   I                                   [irq28: virtio_pci1]
100037                   I                                   [irq29: virtio_pci1]
100038                   I                                   [irq30: virtio_pci1]
100039                   I                                   [irq31: virtio_pci1]
100040                   I                                   [irq32: virtio_pci1]
100045                   I                                   [irq10: virtio_pci2]
100047                   I                                   [irq1: atkbd0]
100048                   I                                   [irq12: psm0]
100049                   I                                   [swi0: uart uart++]
   11     0     0     0  RL      (threaded)                  [idle]
100003                   CanRun                              [idle: cpu0]
100004                   CanRun                              [idle: cpu1]
    1     0     1     0  SLs     wait    0xfffff800032fa530  [init]
   10     0     0     0  DL      audit_w 0xffffffff82663230  [audit]
    0     0     0     0  DLs     (threaded)                  [kernel]
100000                   D       swapin  0xffffffff82609bf8  [swapper]
100005                   D       -       0xfffff8000333d000  [thread taskq]
100007                   D       -       0xfffff8000333cd00  [kqueue_ctx taskq]
100008                   D       -       0xfffff8000333cc00  [config_0]
100009                   D       -       0xfffff8000333cb00  [aiod_kick taskq]
100012                   D       -       0xfffff8000333c800  [if_config_tqg_0]
100013                   D       -       0xfffff8000333c700  [if_io_tqg_0]
100014                   D       -       0xfffff8000333c600  [if_io_tqg_1]
100015                   D       -       0xfffff8000333c500  [softirq_0]
100016                   D       -       0xfffff8000333c400  [softirq_1]
100021                   D       -       0xfffff8000333c300  [firmware taskq]
100026                   D       -       0xfffff8000333c200  [crypto_0]
100027                   D       -       0xfffff8000333c200  [crypto_1]
100041                   D       -       0xfffff8000333c000  [vtnet0 rxq 0]
100042                   D       -       0xfffff8000333be00  [vtnet0 txq 0]
100043                   D       -       0xfffff8000333bd00  [vtnet0 rxq 1]
100044                   D       -       0xfffff8000333bc00  [vtnet0 txq 1]
100046                   D       vtbslp  0xfffff800034d4400  [virtio_balloon]
100050                   D       -       0xfffff8000333bb00  [mca taskq]
100055                   D       -       0xffffffff81cd9b10  [deadlkres]
100057                   D       -       0xfffff80003b31100  [acpi_task_0]
100058                   D       -       0xfffff80003b31100  [acpi_task_1]
100059                   D       -       0xfffff80003b31100  [acpi_task_2]
100061                   D       -       0xfffff8000333c100  [CAM taskq]
db> show all locks
Process 9309 (syz-executor.2) thread 0xfffff8001946c6e0 (100402)
exclusive sx filedesc structure (filedesc structure) r = 0 (0xfffff8003a3658e0) locked @ /syzkaller/managers/i386/kernel/sys/kern/kern_descrip.c:1982
db> show malloc
              Type        InUse        MemUse     Requests
            devbuf         4213         4851K         4241
             vtbuf           24         1968K           46
         sysctloid        26527         1553K        26591
              kobj          331         1324K          487
            newblk           10         1027K        31334
          vfscache            4         1025K            4
          inodedep          139          581K         9963
               pcb           49          558K        10104
         ufs_quota            1          512K            1
          vfs_hash            1          512K            1
           callout            2          512K            2
              intr            4          388K            4
           subproc          143          285K         9395
            acpica         1674          185K        49750
         vnet_data            1          168K            1
          filedesc           21          149K        16803
           pagedep            9          130K         8409
        tfo_ccache            1          128K            1
               sem            4          106K            4
            DEVFS1          105          105K          122
            linker          221           89K          252
               BPF           46           88K           46
               bus          962           78K         3330
          mtx_pool            2           72K            2
          syncache            1           68K            1
          acpitask            1           64K            1
       ddb_capture            1           64K            1
            module          493           62K          493
              umtx          360           45K          360
           kdtrace          195           38K        34495
        gtaskqueue           22           34K           22
         hostcache            1           32K            1
               shm            1           32K         2331
            DEVFS3          124           31K          134
               msg            4           30K            4
        DEVFS_RULE           56           27K           56
            ifaddr           74           25K           76
            kbdmux            6           22K            6
              vmem            3           19K            4
              temp           34           17K         2495
         ufs_mount            3           17K            4
              proc            3           17K            3
          freefile          129           17K         9541
           lltable           44           16K          365
               tty           16           16K           16
           tidhash            1           16K            1
            dirrem          127           16K         9544
           ithread           89           15K           89
       ether_multi          172           14K          177
            bus-sc           30           14K         1394
            KTRACE          100           13K          100
             ifnet            7           13K            7
              kenv           95           12K           99
      eventhandler          123           11K          123
         in6_multi           89           11K           89
         pfs_nodes           20           10K           20
              GEOM           60           10K          487
              rman           82           10K          423
         bmsafemap            2            9K        10215
              cred           33            9K          301
           devstat            4            9K            4
              UART           12            9K           12
               rpc            2            8K            2
         sctp_timw           32            8K           32
             shmfd            1            8K            1
       pfs_vncache            1            8K            1
            select           58            8K           58
     audit_evclass          231            8K          289
          routetbl           58            7K           62
            kqueue           63            7K         9317
           CAM DEV            3            6K          508
            plimit           24            6K          491
                vt           11            6K           11
            sglist            5            6K            5
         CAM queue            5            6K         1522
            DEVFSP           78            5K           82
       ufs_dirhash           24            5K           24
         sctp_atcl            9            5K         2835
         taskqueue           42            5K           42
           session           35            5K           51
              pgrp           35            5K           64
           memdesc            1            4K            1
               MCA           32            4K           32
             evdev            4            4K            4
          kcovinfo           64            4K           68
               UMA          234            4K          234
             lockf           32            4K           80
             hhook           13            4K           13
         proc-args           52            3K          669
           acpisem           22            3K           22
          terminal           11            3K           11
           uidinfo            5            3K           11
          sctp_ifa           17            3K           17
        local_apic            1            2K            1
           io_apic            1            2K            1
         ipsec-saq            2            2K            2
            ip6ndp           12            2K           21
            Unitno           33            2K        29591
           CAM XPT           22            2K          541
          in_multi            6            2K            7
           acpidev           20            2K           20
            crypto            2            2K            2
               msi            9            2K            9
               tun            7            2K            7
          freework            5            2K        17685
             mkdir            8            1K        16780
          freeblks            4            1K         9705
       ipsecpolicy            1            1K            1
            sahead            1            1K            1
          secasvar            1            1K            1
             clone            8            1K            8
       vnodemarker            2            1K           79
      NFSD session            1            1K            1
        CAM periph            4            1K          270
               mld            6            1K            6
          sctp_ifn            6            1K            6
              igmp            6            1K            6
         toponodes            6            1K            6
            isadev            6            1K            6
             mount           16            1K           86
          pci_link           10            1K           10
       inpcbpolicy           18            1K         7902
           CAM SIM            2            1K            2
           softdep            1            1K            1
            diradd            4            1K         9585
              pfil            4            1K            4
    chacha20random            1            1K            1
             epoch            4            1K            4
              cdev            2            1K            2
 encap_export_host            8            1K            8
               osd            3            1K            9
         sctp_atky            9            1K         3100
         newdirblk            4            1K         8390
            vnodes            1            1K          226
      NFSD lckfile            1            1K            1
     NFSD V4client            1            1K            1
             DEVFS            9            1K           10
            feeder            7            1K            7
            soname            7            1K        12192
        loginclass            3            1K            3
         sctp_athm            9            1K         2835
          CAM path            4            1K         1030
            apmdev            1            1K            1
          atkbddev            2            1K            2
          pmchooks            1            1K            1
            prison            4            1K            4
     CAM dev queue            2            1K            2
 CAM I/O Scheduler            1            1K            1
          nexusdev            5            1K            5
          filecaps            5            1K          102
           entropy            2            1K           46
           tcpfunc            1            1K            1
          sctp_vrf            1            1K            1
              vnet            1            1K            1
          acpiintr            1            1K            1
               pmc            1            1K            1
              cpus            2            1K            2
    vnet_data_free            1            1K            1
           Per-cpu            1            1K            1
          p1003.1b            1            1K            1
           CAM CCB            0            0K        48564
        madt_table            0            0K            2
               PUC            0            0K            0
          ppbusdev            0            0K            0
agtiapi_MemAlloc malloc            0            0K            0
    osti_cacheable            0            0K            0
          tempbuff            0            0K            0
          tempbuff            0            0K            0
            pvscsi            0            0K            0
          smartpqi            0            0K            0
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
              iavf            0            0K            0
               ixl            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
       fpukern_ctx            0            0K            0
          xen_intr            0            0K            0
     CAM ccb queue            0            0K            0
           xen_hvm            0            0K            0
         legacydrv            0            0K            0
            qpidrv            0            0K            0
          mrsasbuf            0            0K            0
          mpt_user            0            0K            0
      dmar_idpgtbl            0            0K            0
          dmar_dom            0            0K            0
          dmar_ctx            0            0K            0
       dmar_dmamap            0            0K            0
          mps_user            0            0K            0
            MPSSAS            0            0K            0
              isci            0            0K            0
           bxe_ilt            0            0K            0
            xenbus            0            0K            0
     vm_fictitious            0            0K            0
               mps            0            0K            0
          mpr_user            0            0K            0
            MPRSAS            0            0K            0
           UMAHash            0            0K            0
         vm_pgdata            0            0K            0
           jblocks            0            0K            0
          savedino            0            0K        12776
          sentinel            0            0K            0
            jfsync            0            0K            0
            jtrunc            0            0K            0
             sbdep            0            0K           37
           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
          freefrag            0            0K            6
        allocindir            0            0K            0
          indirdep            0            0K        13723
       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
             xform            0            0K            0
               NLM            0            0K            0
 nfsclient_nlminfo            0            0K            0
    nfsclient_lock            0            0K            0
           NFS FHA            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
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          sctp_map            0            0K          522
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            statfs            0            0K         8581
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db> show ktr
No such command; use "help" to list available commands

Crashes (1):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2020/01/19 12:37 freebsd f5774ec30b1a bc8bc756 console log report ci-freebsd-i386
* Struck through repros no longer work on HEAD.