syzbot


panic: allocdirect_merge: old blkno 9392 != new 9392 || old size 4096 != new NUM

Status: closed as dup on 2020/04/11 20:02
Reported-by: syzbot+99f316a05a09fdbefc15@syzkaller.appspotmail.com
First crash: 1474d, last: 1473d
Duplicate of
Title Repro Cause bisect Fix bisect Count Last Reported
panic: allocdirect_merge: old blkno 9384 != new 9384 || old size 4096 != new NUM 2 1473d 1473d

Sample crash report:
panic: allocdirect_merge: old blkno 9392 != new 9392 || old size 4096 != new 32768
cpuid = 1
time = 52
KDB: stack backtrace:
db_trace_self_wrapper() at db_trace_self_wrapper+0x47/frame 0xfffffe0024b583b0
vpanic() at vpanic+0x1c7/frame 0xfffffe0024b58410
panic() at panic+0x43/frame 0xfffffe0024b58470
allocdirect_merge() at allocdirect_merge+0x2c4/frame 0xfffffe0024b584d0
merge_inode_lists() at merge_inode_lists+0x177/frame 0xfffffe0024b58520
softdep_update_inodeblock() at softdep_update_inodeblock+0x374/frame 0xfffffe0024b58580
ffs_update() at ffs_update+0x309/frame 0xfffffe0024b58620
ffs_truncate() at ffs_truncate+0x7b1/frame 0xfffffe0024b58810
ufs_setattr() at ufs_setattr+0x91e/frame 0xfffffe0024b588b0
VOP_SETATTR_APV() at VOP_SETATTR_APV+0x75/frame 0xfffffe0024b588e0
vn_truncate_locked() at vn_truncate_locked+0xb6/frame 0xfffffe0024b589f0
vn_truncate() at vn_truncate+0x1d1/frame 0xfffffe0024b58a70
kern_ftruncate() at kern_ftruncate+0x151/frame 0xfffffe0024b58ac0
amd64_syscall() at amd64_syscall+0x262/frame 0xfffffe0024b58bf0
fast_syscall_common() at fast_syscall_common+0x101/frame 0xfffffe0024b58bf0
--- syscall (198, FreeBSD ELF64, nosys), rip = 0x41332a, rsp = 0x7fffdfffdf38, rbp = 0x2 ---
KDB: enter: panic
[ thread pid 1297 tid 100681 ]
Stopped at      kdb_enter+0x67: movq    $0,0x146ea36(%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                        0x28  ll+0x7
rax                       0x12
rcx         0xfffffe0025200000
rdx                    0x3ffff
rbx                          0
rsp         0xfffffe0024b58390
rbp         0xfffffe0024b583b0
rsi                    0x40001
rdi         0xffffffff810b3586  vprintf+0x176
r8                           0
r9                  0xffffffff
r10                        0x6
r11                    0x125be
r12         0xffffffff82068e50  ddb_dbbe
r13                          0
r14         0xffffffff81932d3e
r15         0xffffffff81932d3e
rip         0xffffffff810a8847  kdb_enter+0x67
rflags                    0x86  ll+0x65
kdb_enter+0x67: movq    $0,0x146ea36(%rip)
db> show proc
Process 1297 (syz-executor.0) at 0xfffff80003c71528:
 state: NORMAL
 uid: 0  gids: 0, 0, 5
 parent: pid 768 at 0xfffff80003d21528
 ABI: FreeBSD ELF64
 arguments: /root/syz-executor.0
 reaper: 0xfffff8000330c000 reapsubtree: 1
 sigparent: 20
 vmspace: 0xfffffe002494e3d0
   (map 0xfffffe002494e3d0)
   (map.pmap 0xfffffe002494e490)
   (pmap 0xfffffe002494e4f0)
 threads: 4
101177                   RunQ                                syz-executor.0
100681                   Run     CPU 1                       syz-executor.0
100683                   S       sbwait  0xfffffe0003dcb8e4  syz-executor.0
100684                   S       uwait   0xfffff80003a38980  syz-executor.0
db> ps
  pid  ppid  pgrp   uid  state   wmesg   wchan               cmd
 1298   881   881     0  R       (threaded)                  syz-executor.2
100515                   Run     CPU 0                       syz-executor.2
100686                   S       sbwait  0xfffffe0003dd0704  syz-executor.2
 1297   768   768     0  R       (threaded)                  syz-executor.0
101177                   RunQ                                syz-executor.0
100681                   Run     CPU 1                       syz-executor.0
100683                   S       sbwait  0xfffffe0003dcb8e4  syz-executor.0
100684                   S       uwait   0xfffff80003a38980  syz-executor.0
 1296   785   785     0  S       (threaded)                  syz-executor.3
100352                   S       nanslp  0xffffffff824ffe80  syz-executor.3
100679                   S       uwait   0xfffff8000be33280  syz-executor.3
100680                   S       pipdwt  0xfffff8000b690758  syz-executor.3
100682                   S       uwait   0xfffff800037fc280  syz-executor.3
 1294   769   769     0  S       (threaded)                  syz-executor.1
100096                   S       nanslp  0xffffffff824ffe80  syz-executor.1
100664                   S       nanslp  0xffffffff824ffe81  syz-executor.1
100675                   S       uwait   0xfffff80003a3a180  syz-executor.1
100676                   S       pipdwt  0xfffff80003ccdd48  syz-executor.1
100678                   S       uwait   0xfffff8000bcfe700  syz-executor.1
  990   984   990     0  Ss      select  0xfffff80003a50740  dhclient
  987     1   987     0  Ss      select  0xfffff800030edc40  dhclient
  984   975   422    65  S       select  0xfffff800030ef2c0  dhclient
  975   422   422     0  S       wait    0xfffff8000bba8528  sh
  881   766   881     0  Ss      nanslp  0xffffffff824ffe80  syz-executor.2
  785   766   785     0  Rs                                  syz-executor.3
  769   766   769     0  Ss      nanslp  0xffffffff824ffe81  syz-executor.1
  768   766   768     0  Ss      nanslp  0xffffffff824ffe81  syz-executor.0
  766   764   764     0  S       (threaded)                  syz-fuzzer
100085                   S       uwait   0xfffff800037fbb00  syz-fuzzer
100098                   S       uwait   0xfffff800037fc680  syz-fuzzer
100099                   S       uwait   0xfffff800037fc780  syz-fuzzer
100100                   S       uwait   0xfffff800037fc880  syz-fuzzer
100101                   S       uwait   0xfffff80003a39080  syz-fuzzer
100102                   S       kqread  0xfffff80003a43200  syz-fuzzer
100103                   S       uwait   0xfffff800037fca80  syz-fuzzer
100104                   S       uwait   0xfffff8000330fb00  syz-fuzzer
100105                   S       uwait   0xfffff8000330fc00  syz-fuzzer
100106                   S       uwait   0xfffff80003a39180  syz-fuzzer
  764   762   764     0  Ss      pause   0xfffff80003c720a8  csh
  762   680   762     0  Ss      select  0xfffff800030ef240  sshd
  746     1   746     0  Ss+     ttyin   0xfffff8000380dcb0  getty
  745     1   745     0  Ss+     ttyin   0xfffff80003b1d0b0  getty
  744     1   744     0  Ss+     ttyin   0xfffff80003b1d4b0  getty
  743     1   743     0  Ss+     ttyin   0xfffff80003b1d8b0  getty
  742     1   742     0  Ss+     ttyin   0xfffff80003b1dcb0  getty
  741     1   741     0  Ss+     ttyin   0xfffff80003b200b0  getty
  740     1   740     0  Ss+     ttyin   0xfffff80003b204b0  getty
  739     1   739     0  Ss+     ttyin   0xfffff80003b208b0  getty
  738     1   738     0  Ss+     ttyin   0xfffff80003b20cb0  getty
  684     1   684     0  Ss      nanslp  0xffffffff824ffe80  cron
  680     1   680     0  Ss      select  0xfffff80003a4f940  sshd
  493     1   493     0  Ss      select  0xfffff800030ef440  syslogd
  422     1   422     0  Ss      wait    0xfffff80003c6ea50  devd
  421     1   421    65  Ss      select  0xfffff800030ef3c0  dhclient
  336     1   336     0  Ss      select  0xfffff80003a4f840  dhclient
  333     1   333     0  Ss      select  0xfffff80003a4f7c0  dhclient
   21     0     0     0  DL      syncer  0xffffffff825d6318  [syncer]
   20     0     0     0  DL      vlruwt  0xfffff80003aef000  [vnlru]
   19     0     0     0  DL      (threaded)                  [bufdaemon]
100065                   D       qsleep  0xffffffff825d5818  [bufdaemon]
100070                   D       -       0xffffffff8200aa00  [bufspacedaemon-0]
100080                   D       sdflush 0xfffff80003d0cce8  [/ worker]
   18     0     0     0  DL      psleep  0xffffffff825f1188  [vmdaemon]
   17     0     0     0  DL      (threaded)                  [pagedaemon]
100063                   D       psleep  0xffffffff8261d058  [dom0]
100068                   D       launds  0xffffffff8261d064  [laundry: dom0]
100069                   D       umarcl  0xffffffff81536ac0  [uma]
   16     0     0     0  DL      -       0xffffffff8235a6b0  [rand_harvestq]
   15     0     0     0  DL      waiting 0xffffffff82662620  [sctp_iterator]
    9     0     0     0  DL      -       0xffffffff825d521c  [soaiod4]
    8     0     0     0  DL      -       0xffffffff825d521c  [soaiod3]
    7     0     0     0  DL      -       0xffffffff825d521c  [soaiod2]
    6     0     0     0  DL      -       0xffffffff825d521c  [soaiod1]
    5     0     0     0  DL      (threaded)                  [cam]
100031                   D       -       0xffffffff82235ac0  [doneq0]
100062                   D       -       0xffffffff82235988  [scanner]
    4     0     0     0  DL      crypto_ 0xfffff8000320be90  [crypto returns 1]
    3     0     0     0  DL      crypto_ 0xfffff8000320be30  [crypto returns 0]
    2     0     0     0  DL      crypto_ 0xffffffff825eb250  [crypto]
   14     0     0     0  DL      seqstat 0xfffff80003364488  [sequencer 00]
   13     0     0     0  DL      (threaded)                  [geom]
100022                   D       -       0xffffffff8261b688  [g_event]
100023                   D       -       0xffffffff8261b698  [g_up]
100024                   D       -       0xffffffff8261b690  [g_down]
   12     0     0     0  WL      (threaded)                  [intr]
100010                   I                                   [swi6: Giant taskq]
100012                   I                                   [swi5: fast taskq]
100016                   I                                   [swi6: task queue]
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    0xfffff8000330c000  [init]
   10     0     0     0  DL      audit_w 0xffffffff826631a8  [audit]
    0     0     0     0  DLs     (threaded)                  [kernel]
100000                   D       swapin  0xffffffff8260ad08  [swapper]
100005                   D       -       0xfffff80003215b00  [if_config_tqg_0]
100006                   D       -       0xfffff80003215900  [softirq_0]
100007                   D       -       0xfffff80003215700  [softirq_1]
100008                   D       -       0xfffff80003215500  [if_io_tqg_0]
100009                   D       -       0xfffff80003215300  [if_io_tqg_1]
100011                   D       -       0xfffff800031fad00  [thread taskq]
100013                   D       -       0xfffff800031fab00  [in6m_free taskq]
100014                   D       -       0xfffff800031faa00  [aiod_kick taskq]
100015                   D       -       0xfffff800031fa900  [kqueue_ctx taskq]
100021                   D       -       0xfffff800031fa700  [firmware taskq]
100026                   D       -       0xfffff800031fa500  [crypto_0]
100027                   D       -       0xfffff800031fa500  [crypto_1]
100041                   D       -       0xfffff800031f7a00  [vtnet0 rxq 0]
100042                   D       -       0xfffff800031f7900  [vtnet0 txq 0]
100043                   D       -       0xfffff800031f7800  [vtnet0 rxq 1]
100044                   D       -       0xfffff800031f7700  [vtnet0 txq 1]
100046                   D       vtbslp  0xfffff800037f3800  [virtio_balloon]
100050                   D       -       0xfffff8000381e200  [mca taskq]
100054                   D       -       0xffffffff81cd60c1  [deadlkres]
100057                   D       -       0xfffff80003b1c900  [acpi_task_0]
100058                   D       -       0xfffff80003b1c900  [acpi_task_1]
100059                   D       -       0xfffff80003b1c900  [acpi_task_2]
100061                   D       -       0xfffff800031fa200  [CAM taskq]
db> show all locks
Process 1297 (syz-executor.0) thread 0xfffffe002493d700 (100681)
exclusive rw per-fs softdep (per-fs softdep) r = 0 (0xfffff80003d0cc00) locked @ /syzkaller/managers/main/kernel/sys/ufs/ffs/ffs_softdep.c:12362
exclusive lockmgr bufwait (bufwait) r = 0 (0xfffffe0003e03140) locked @ /syzkaller/managers/main/kernel/sys/kern/vfs_bio.c:3878
exclusive lockmgr ufs (ufs) r = 0 (0xfffff8000bc9d068) locked @ /syzkaller/managers/main/kernel/sys/kern/vfs_vnops.c:1318
db> show malloc
              Type        InUse        MemUse     Requests
            devbuf         4213         4851K         4241
             vtbuf           24         1968K           46
         sysctloid        25931         1511K        25995
              kobj          332         1328K          488
            newblk           11         1027K         5365
          vfscache            4         1025K            4
               pcb           31          546K          554
          inodedep           10          517K          769
         ufs_quota            1          512K            1
          vfs_hash            1          512K            1
           callout            2          512K            2
              intr            4          388K            4
           subproc          126          249K         1372
            acpica         1674          185K        52709
         vnet_data            1          168K            1
          filedesc           21          149K          856
           pagedep            9          130K          459
        tfo_ccache            1          128K            1
               sem            4          106K            4
            DEVFS1          105          105K          122
            linker          222           89K          256
               bus          992           79K         3378
          mtx_pool            2           72K            2
          syncache            1           68K            1
          acpitask            1           64K            1
       ddb_capture            1           64K            1
            module          494           62K          494
              umtx          342           43K          342
               BPF           22           36K           22
           kdtrace          176           35K         4262
         hostcache            1           32K            1
               shm            1           32K            6
            DEVFS3          124           31K          134
               msg            4           30K            4
        DEVFS_RULE           56           27K           56
        gtaskqueue           18           26K           18
            ifaddr           71           24K           76
              vmem            3           22K            4
            kbdmux            6           22K            6
           lltable           47           18K           64
              temp           34           17K         2121
         ufs_mount            3           17K            4
              proc            3           17K            3
               tty           16           16K           16
           tidhash            1           16K            1
           ithread           89           15K           89
       ether_multi          172           14K          210
            bus-sc           30           14K         1431
            KTRACE          100           13K          100
             ifnet            7           13K            7
              kenv           95           12K           99
         in6_multi           89           11K          105
      eventhandler          122           11K          122
         pfs_nodes           20           10K           20
              GEOM           60           10K          487
              rman           82           10K          423
         bmsafemap            2            9K          725
              UART           12            9K           12
           devstat            4            9K            4
               rpc            2            8K            2
             shmfd            1            8K            3
       pfs_vncache            1            8K            1
          routetbl           56            8K           67
     audit_evclass          232            8K          290
         sctp_timw           25            7K           25
           CAM DEV            3            6K          510
            select           48            6K           48
              cred           24            6K          224
            kqueue           55            6K         1305
                vt           11            6K           11
            plimit           21            6K          392
            sglist            5            6K            5
         CAM queue            5            6K         1528
         taskqueue           45            5K           45
       ufs_dirhash           24            5K           24
            DEVFSP           72            5K           94
           memdesc            1            4K            1
               MCA           32            4K           32
           CAM CCB            2            4K        12530
             evdev            4            4K            4
          kcovinfo           64            4K           85
               UMA          235            4K          235
             hhook           13            4K           13
           session           25            4K           39
              pgrp           25            4K           39
         sctp_atcl            6            3K          231
           acpisem           22            3K           22
          terminal           11            3K           11
             lockf           24            3K          227
         proc-args           44            3K          585
           uidinfo            4            3K           11
          sctp_ifa           17            3K           20
        local_apic            1            2K            1
           io_apic            1            2K            1
         ipsec-saq            2            2K            2
         sctp_stro            2            2K           50
               iov            1            2K        15505
            ip6ndp           12            2K           23
            Unitno           30            2K         1187
           CAM XPT           22            2K          543
          in_multi            6            2K            8
           acpidev           20            2K           20
               msi            9            2K            9
               tun            7            2K            7
           softdep            1            1K            1
       ipsecpolicy            1            1K            1
            sahead            1            1K            1
          secasvar            1            1K            1
             clone            8            1K            8
       vnodemarker            2            1K          132
      NFSD session            1            1K            1
        CAM periph            4            1K          271
             mkdir            6            1K          818
            diradd            6            1K          594
          indirdep            3            1K         1611
               mld            6            1K            6
          sctp_ifn            6            1K            7
              igmp            6            1K            6
         toponodes            6            1K            6
            isadev            6            1K            6
             mount           16            1K           86
          pci_link           10            1K           10
            crypto            3            1K            3
       inpcbpolicy           18            1K         2270
         newdirblk            4            1K          409
              pfil            4            1K            4
    chacha20random            1            1K            1
           CAM SIM            2            1K            2
             epoch            4            1K            4
              cdev            2            1K            2
 encap_export_host            8            1K            8
         sctp_atky            8            1K          285
               osd            3            1K            9
            dirrem            1            1K          555
            vnodes            1            1K            8
      NFSD lckfile            1            1K            1
     NFSD V4client            1            1K            1
             DEVFS            9            1K           10
            feeder            7            1K            7
        loginclass            3            1K            6
     CAM dev queue            2            1K            2
 CAM I/O Scheduler            1            1K            1
            apmdev            1            1K            1
          atkbddev            2            1K            2
          CAM path            4            1K         1034
          pmchooks            1            1K            1
            prison            4            1K            4
            soname            4            1K         6036
         sctp_athm            6            1K          231
          nexusdev            5            1K            5
           entropy            2            1K           39
           tcpfunc            1            1K            1
          sctp_vrf            1            1K            1
          sctp_map            4            1K          100
              vnet            1            1K            1
          acpiintr            1            1K            1
               pmc            1            1K            1
              cpus            2            1K            2
          freework            1            1K         1726
    vnet_data_free            1            1K            1
           Per-cpu            1            1K            1
          filecaps            2            1K           94
          p1003.1b            1            1K            1
           ath_hal            0            0K            0
            athdev            0            0K            0
        madt_table            0            0K            2
           ata_pci            0            0K            0
           ata_dma            0            0K            0
       ata_generic            0            0K            0
               amr            0            0K            0
           scsi_da            0            0K           69
            ata_da            0            0K            0
           scsi_ch            0            0K            0
            pvscsi            0            0K            0
          smartpqi            0            0K            0
           scsi_cd            0            0K            0
            USBdev            0            0K            0
               USB            0            0K            0
       AHCI driver            0            0K            0
               agp            0            0K            0
           nvme_da            0            0K            0
              iavf            0            0K            0
               ixl            0            0K            0
           acpipwr            0            0K            0
            twsbuf            0            0K            0
      twe_commands            0            0K            0
      twa_commands            0            0K            0
       tcp_log_dev            0            0K            2
      midi buffers            0            0K            0
             mixer            0            0K            0
       fpukern_ctx            0            0K            0
          xen_intr            0            0K            0
              ac97            0            0K            0
             hdacc            0            0K            0
           xen_hvm            0            0K            0
         legacydrv            0            0K            0
            qpidrv            0            0K            0
              hdac            0            0K            0
              hdaa            0            0K            0
      dmar_idpgtbl            0            0K            0
          dmar_dom            0            0K            0
          dmar_ctx            0            0K            0
       dmar_dmamap            0            0K            0
         acpi_perf            0            0K            0
         acpicmbat            0            0K            0
       SIIS driver            0            0K            0
              isci            0            0K            0
           bxe_ilt            0            0K            0
            xenbus            0            0K            0
     vm_fictitious            0            0K            0
               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
ag_tgt_map_t malloc            0            0K            0
           UMAHash            0            0K            0
ag_slr_map_t malloc            0            0K            0
lDevFlags * malloc            0            0K            0
         vm_pgdata            0            0K            0
           jblocks            0            0K            0
          savedino            0            0K          476
          sentinel            0            0K            0
            jfsync            0            0K            0
            jtrunc            0            0K            0
             sbdep            0            0K           67
           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          552
          freeblks            0            0K          605
          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
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tiDeviceHandle_t * malloc            0            0K            0
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db> show ktr
No such command; use "help" to list available commands

Crashes (2):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2020/04/06 12:25 freebsd 08ce9e8944a9 34833561 console log report ci-freebsd-main
2020/04/06 03:29 freebsd 08ce9e8944a9 d9ed075d console log report ci-freebsd-main
* Struck through repros no longer work on HEAD.