syzbot


pool: free list modified: fdescpl (3)

Status: upstream: reported on 2022/07/07 19:55
Reported-by: syzbot+813ed08b74a7149d6e7e@syzkaller.appspotmail.com
First crash: 215d, last: 3d16h
similar bugs (2):
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
openbsd pool: free list modified: fdescpl 1 383d 383d 0/3 auto-closed as invalid on 2022/04/21 05:57
openbsd pool: free list modified: fdescpl (2) C 6 231d 276d 3/3 fixed on 2022/06/27 15:33

Sample crash report:
panic: pool_do_get: fdescpl free list modified: page 0xfffffd806648a000; item addr 0xfffffd806648ad98; offset 0x48=0xdead4113
Stopped at      db_enter+0x18:  addq    $0x8,%rsp
    TID    PID    UID     PRFLAGS     PFLAGS  CPU  COMMAND
 462097  96757  32767        0x10          0    1  syz-executor.6
*202135  91371  32767        0x10          0    0K syz-executor.1
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:437
panic(ffffffff827bd7c7) at panic+0x177 sys/kern/subr_prf.c:198
pool_do_get(ffffffff82c89eb0,9,ffff800023cf8ef8) at pool_do_get+0x474 sys/kern/subr_pool.c:739
pool_get(ffffffff82c89eb0,9) at pool_get+0xe9 sys/kern/subr_pool.c:582
fdcopy(ffff8000ffff9928) at fdcopy+0x44 fdinit sys/kern/kern_descrip.c:1067 [inline]
fdcopy(ffff8000ffff9928) at fdcopy+0x44 sys/kern/kern_descrip.c:1106
process_new(ffff800029588350,ffff8000ffff9928,1) at process_new+0x2bc sys/kern/kern_fork.c:255
fork1(ffff8000212142d8,1,ffffffff81cbbb00,0,ffff800023cf9140,0) at fork1+0x30b sys/kern/kern_fork.c:379
syscall(ffff800023cf91c0) at syscall+0x555 mi_syscall sys/sys/syscall_mi.h:113 [inline]
syscall(ffff800023cf91c0) at syscall+0x555 sys/arch/amd64/amd64/trap.c:626
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7f7fffff9620, count: 6
https://www.openbsd.org/ddb.html describes the minimum info required in bug
reports.  Insufficient info makes it difficult to find and fix bugs.
ddb{0}> 
ddb{0}> set $lines = 0
ddb{0}> set $maxwidth = 0
ddb{0}> show panic
*cpu0: pool_do_get: fdescpl free list modified: page 0xfffffd806648a000; item addr 0xfffffd806648ad98; offset 0x48=0xdead4113
ddb{0}> trace
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:437
panic(ffffffff827bd7c7) at panic+0x177 sys/kern/subr_prf.c:198
pool_do_get(ffffffff82c89eb0,9,ffff800023cf8ef8) at pool_do_get+0x474 sys/kern/subr_pool.c:739
pool_get(ffffffff82c89eb0,9) at pool_get+0xe9 sys/kern/subr_pool.c:582
fdcopy(ffff8000ffff9928) at fdcopy+0x44 fdinit sys/kern/kern_descrip.c:1067 [inline]
fdcopy(ffff8000ffff9928) at fdcopy+0x44 sys/kern/kern_descrip.c:1106
process_new(ffff800029588350,ffff8000ffff9928,1) at process_new+0x2bc sys/kern/kern_fork.c:255
fork1(ffff8000212142d8,1,ffffffff81cbbb00,0,ffff800023cf9140,0) at fork1+0x30b sys/kern/kern_fork.c:379
syscall(ffff800023cf91c0) at syscall+0x555 mi_syscall sys/sys/syscall_mi.h:113 [inline]
syscall(ffff800023cf91c0) at syscall+0x555 sys/arch/amd64/amd64/trap.c:626
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7f7fffff9620, count: -9
ddb{0}> show registers
rdi                                0
rsi                              0x1
rbp               0xffff800023cf8d40
rbx               0xffffffff82bf4b8f    cpu_info_full_primary+0x2b8f
rdx                                0
rcx                                0
rax               0xffff8000212142d8
r8                 0x101010101010101
r9                0x8080808080808080
r10                0x1dbfd82d95dba4d
r11               0xaf1a1758fd3da14f
r12               0xffffffff82bf4990    cpu_info_full_primary+0x2990
r13                                0
r14                                0
r15                              0x1
rip               0xffffffff8149c648    db_enter+0x18
cs                               0x8
rflags                         0x246
rsp               0xffff800023cf8d30
ss                              0x10
db_enter+0x18:  addq    $0x8,%rsp
ddb{0}> show proc
PROC (syz-executor.1) pid=202135 stat=onproc
    flags process=10<SUGID> proc=0
    pri=81, usrpri=81, nice=20
    forw=0xffffffffffffffff, list=0xffff800021214590,0xffff800021215338
    process=0xffff8000ffff9928 user=0xffff800023cf4000, vmspace=0xfffffd807effba50
    estcpu=36, cpticks=1, pctcpu=0.4
    user=0, sys=1, intr=0
ddb{0}> ps
   PID     TID   PPID    UID  S       FLAGS  WAIT          COMMAND
 60164  215570  19259  32767  2        0x10                syz-executor.4
   513  177523  33638  32767  2        0x10                syz-executor.7
   513  166871  33638  32767  3   0x4000090  fsleep        syz-executor.7
   513   41563  33638  32767  3   0x4000090  netcon        syz-executor.7
 59459  186362  79894  32767  2       0x490                syz-executor.3
 59459  474206  79894  32767  3   0x4000090  netcon        syz-executor.3
 59459  171332  79894  32767  3   0x4000090  fsleep        syz-executor.3
 23166  296862  65012  32767  2        0x10                syz-executor.2
 23166  246654  65012  32767  3   0x4000090  sysctllk      syz-executor.2
 23166  200147  65012  32767  3   0x4000090  fsleep        syz-executor.2
 31964  452784  78961  32767  3        0x90  nanoslp       syz-executor.5
 31964  177697  78961  32767  3   0x4000090  fsleep        syz-executor.5
 31964   74794  78961  32767  3   0x4000090  fsleep        syz-executor.5
 31964  286393  78961  32767  3   0x4000010  fdlock        syz-executor.5
 78961   54439  79761  32767  2       0x490                syz-executor.5
 79761  210839  85745      0  3        0x82  wait          syz-executor.5
 11811  501194      0      0  3     0x14200  bored         sosplice
 96757  462097  62193  32767  7        0x10                syz-executor.6
 33638  455854  96084  32767  3        0x90  nanoslp       syz-executor.7
 62193   80740  85745      0  3        0x82  wait          syz-executor.6
 96084  480925  85745      0  3        0x82  wait          syz-executor.7
 79894   92270  72898  32767  2       0x490                syz-executor.3
 19259  476068  19711  32767  3        0x90  nanoslp       syz-executor.4
 19711  316236  85745      0  3        0x82  wait          syz-executor.4
 65012  397393  41945  32767  2       0x490                syz-executor.2
 72898  336367  85745      0  3        0x82  wait          syz-executor.3
*91371  202135  59115  32767  7        0x10                syz-executor.1
 41945  138056  85745      0  3        0x82  wait          syz-executor.2
  5722  171030  84791  32767  2        0x10                syz-executor.0
 59115  514002  85745      0  3        0x82  wait          syz-executor.1
 84791  424302  85745      0  3        0x82  wait          syz-executor.0
 85745  365494  50786      0  3        0x82  wait          syz-fuzzer
 85745  142573  50786      0  3   0x4000082  nanoslp       syz-fuzzer
 85745  343809  50786      0  3   0x4000082  wait          syz-fuzzer
 85745  302378  50786      0  3   0x4000082  thrsleep      syz-fuzzer
 85745   45203  50786      0  3   0x4000082  wait          syz-fuzzer
 85745  386878  50786      0  3   0x4000082  wait          syz-fuzzer
 85745  347191  50786      0  3   0x4000082  wait          syz-fuzzer
 85745    3710  50786      0  3   0x4000082  wait          syz-fuzzer
 85745  286050  50786      0  3   0x4000082  kqread        syz-fuzzer
 85745  425062  50786      0  3   0x4000082  thrsleep      syz-fuzzer
 85745   30307  50786      0  3   0x4000082  thrsleep      syz-fuzzer
 85745   49992  50786      0  3   0x4000082  thrsleep      syz-fuzzer
 85745  150463  50786      0  3   0x4000082  wait          syz-fuzzer
 85745  294238  50786      0  3   0x4000082  wait          syz-fuzzer
 85745  380959  50786      0  3   0x4000082  thrsleep      syz-fuzzer
 85745   70364  50786      0  3   0x4000082  thrsleep      syz-fuzzer
 50786   57812  69029      0  3    0x10008a  sigsusp       ksh
 69029  349874   5778      0  3        0x9a  kqread        sshd
 71767  159839      1      0  3    0x100083  ttyin         getty
  5778  156499      1      0  3        0x88  kqread        sshd
 62015  299867  49271     73  3   0x1100090  kqread        syslogd
 49271   25232      1      0  3    0x100082  netio         syslogd
 32326  508387      1      0  3    0x100080  kqread        resolvd
 48626  250184  11367     77  3    0x100092  kqread        dhcpleased
 26361  391838  11367     77  3    0x100092  kqread        dhcpleased
 11367   72788      1      0  3        0x80  kqread        dhcpleased
 81956  513405      0      0  3     0x14200  bored         smr
 63660   92351      0      0  2     0x14200                zerothread
 32397  301429      0      0  3     0x14200  aiodoned      aiodoned
 89921  463036      0      0  3     0x14200  syncer        update
 21400  398676      0      0  3     0x14200  cleaner       cleaner
 27824  520464      0      0  3     0x14200  reaper        reaper
 12880  304036      0      0  3     0x14200  pgdaemon      pagedaemon
 93493  155279      0      0  3     0x14200  bored         viomb
 32813  122091      0      0  3  0x40014200  acpi0         acpi0
 59540  197634      0      0  3  0x40014200                idle1
 47653   98917      0      0  3     0x14200  bored         softnet
 93708  385460      0      0  3     0x14200  bored         softnet
 83815  399997      0      0  3     0x14200  bored         softnet
 77085  506516      0      0  3     0x14200  bored         softnet
  5037  400538      0      0  3     0x14200  bored         systqmp
 52328  444146      0      0  3     0x14200  bored         systq
 12419  418127      0      0  2  0x40014200                softclock
 80832  194363      0      0  3  0x40014200                idle0
     1   22964      0      0  3        0x82  wait          init
     0       0     -1      0  3     0x10200  scheduler     swapper
ddb{0}> show all locks
CPU 0:
exclusive mutex fdescpl r = 0 (0xffffffff82c89ec0)
#0  witness_lock+0x44d
#1  mtx_enter_try+0x100
#2  mtx_enter+0x4b sys/kern/kern_lock.c:266
#3  pool_get+0xbd sys/kern/subr_pool.c:579
#4  fdcopy+0x44 fdinit sys/kern/kern_descrip.c:1067 [inline]
#4  fdcopy+0x44 sys/kern/kern_descrip.c:1106
#5  process_new+0x2bc sys/kern/kern_fork.c:255
#6  fork1+0x30b sys/kern/kern_fork.c:379
#7  syscall+0x555 mi_syscall sys/sys/syscall_mi.h:113 [inline]
#7  syscall+0x555 sys/arch/amd64/amd64/trap.c:626
#8  Xsyscall+0x128
Process 31964 (syz-executor.5) thread 0xffff800023cfa2e8 (286393)
exclusive rwlock sysctllk r = 0 (0xffffffff82be1630)
#0  witness_lock+0x44d
#1  rw_enter+0x3e1 sys/kern/kern_rwlock.c:310
#2  sys_sysctl+0x1b3 sys/kern/kern_sysctl.c:234
#3  syscall+0x555 mi_syscall sys/sys/syscall_mi.h:113 [inline]
#3  syscall+0x555 sys/arch/amd64/amd64/trap.c:626
#4  Xsyscall+0x128
Process 91371 (syz-executor.1) thread 0xffff8000212142d8 (202135)
exclusive kernel_lock &kernel_lock r = 0 (0xffffffff82daf378)
#0  witness_lock+0x44d
#1  syscall+0x53d mi_syscall sys/sys/syscall_mi.h:112 [inline]
#1  syscall+0x53d sys/arch/amd64/amd64/trap.c:626
#2  Xsyscall+0x128
exclusive mutex fdescpl r = 0 (0xffffffff82c89ec0)
#0  witness_lock+0x44d
#1  mtx_enter_try+0x100
#2  mtx_enter+0x4b sys/kern/kern_lock.c:266
#3  pool_get+0xbd sys/kern/subr_pool.c:579
#4  fdcopy+0x44 fdinit sys/kern/kern_descrip.c:1067 [inline]
#4  fdcopy+0x44 sys/kern/kern_descrip.c:1106
#5  process_new+0x2bc sys/kern/kern_fork.c:255
#6  fork1+0x30b sys/kern/kern_fork.c:379
#7  syscall+0x555 mi_syscall sys/sys/syscall_mi.h:113 [inline]
#7  syscall+0x555 sys/arch/amd64/amd64/trap.c:626
#8  Xsyscall+0x128
ddb{0}> show malloc
           Type InUse  MemUse  HighUse   Limit  Requests Type Lim
         devbuf 10216   6412K    6421K  78643K     11313        0
            pcb    13     12K      14K  78643K        17        0
         rtable   242      6K       7K  78643K       565        0
         ifaddr    73     24K      24K  78643K        87        0
         sysctl     3      1K       1K  78643K         3        0
       counters    60     35K      35K  78643K        64        0
       ioctlops     0      0K       2K  78643K        54        0
            iov     0      0K      28K  78643K      1219        0
          mount     1      1K       1K  78643K         1        0
            log     0      0K       0K  78643K         4        0
         vnodes  1272     80K      80K  78643K      2451        0
      UFS quota     1     32K      32K  78643K         1        0
      UFS mount     5     36K      36K  78643K         5        0
            shm     2      1K       9K  78643K       102        0
         VM map     2      1K       1K  78643K         2        0
            sem    12      0K       0K  78643K      2698        0
        dirhash    12      2K       2K  78643K        12        0
           ACPI  1697    195K     286K  78643K     12548        0
      file desc    23     85K     121K  78643K      5673        0
          sigio     0      0K       0K  78643K        81        0
           proc    56     78K     103K  78643K       905        0
        subproc   104      6K       6K  78643K       130        0
    NFS srvsock     1      0K       0K  78643K         1        0
     NFS daemon     1     16K      16K  78643K         1        0
    ip_moptions     0      0K       0K  78643K       809        0
       in_multi    99      6K       7K  78643K       197        0
    ether_multi     1      0K       0K  78643K        21        0
            mrt     1      0K       0K  78643K         1        0
    ISOFS mount     1     32K      32K  78643K         1        0
  MSDOSFS mount     1     16K      16K  78643K         1        0
           ttys   169    758K     758K  78643K       169        0
           exec     0      0K       1K  78643K      1087        0
            tdb     3      0K       0K  78643K         3        0
        pagedep     1      8K       8K  78643K         1        0
       inodedep     1     32K      32K  78643K         1        0
         newblk     1      0K       0K  78643K         1        0
        VM swap     8     62K      64K  78643K        10        0
       UVM amap   385     95K     111K  78643K     43498        0
       UVM aobj   131      4K       4K  78643K       131        0
        memdesc     1      4K       4K  78643K         1        0
    crypto data     1      1K       1K  78643K         1        0
    ip6_options     0      0K       0K  78643K       281        0
            NDP    11      0K       2K  78643K        33        0
           temp   125   5779K    5906K  78643K     17359        0
         kqueue    12     18K      25K  78643K       420        0
      SYN cache     2     16K      16K  78643K         2        0
ddb{0}> show all pools
Name      Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle
plcache    128       22    0        0     1     0     1     1     0     8    0
rtpcb      120      952    0      949    15    14     1     3     0     8    0
rtentry    112      139    0       25     4     0     4     4     0     8    0
unpcb      144     5090    0     5077    44    38     6     6     0     8    5
syncache   296       79    0       79    13    13     0     1     0     8    0
tcpqe       32      106    0      106    11    11     0     1     0     8    0
tcpcb      776     9543    0     9499   132   123     9    21     0     8    4
arp        120       24    0        5     1     0     1     1     0     8    0
ipq         40       10    0        6     4     3     1     1     0     8    0
ipqe        40       35    0       31     4     3     1     1     0     8    0
inpcb      368    12343    0    12294   136   127     9    19     0     8    4
nd6         48       34    0        7     1     0     1     1     0     8    0
kcovpl      48       10    0        2     1     0     1     1     0     8    0
art_heap8  4096       1    0        0     1     0     1     1     0     8    0
art_heap4  256      555    0       91    30     0    30    30     0     8    0
art_table   32      556    0       91     4     0     4     4     0     8    0
art_node    16      138    0       34     1     0     1     1     0     8    0
sysvmsgpl   40        1    0        1     1     1     0     1     0     8    0
semapl     112     2694    0     2684     1     0     1     1     0     8    0
shmpl      112      128    0        0     4     0     4     4     0     8    0
dirhash    1024      17    0        0     3     0     3     3     0     8    0
dino2pl    256     9086    0     7643    92     1    91    91     0     8    0
ffsino     272     9086    0     7643    98     1    97    97     0     8    0
nchpl      144    16680    0    15046    63     0    63    63     0     8    0
uvmvnodes   80     5926    0        0   121     0   121   121     0     8    0
vnodes     216     5926    0        0   330     0   330   330     0     8    0
namei      1024   59420    0    59420     2     1     1     2     0     8    1
percpumem   16       45    0        2     1     0     1     1     0     8    0
kstatmem   264       26    0        4     2     0     2     2     0     8    0
scxspl     216    54094    0    54094    25    23     2     8     0     8    2
plimitpl   152     1163    0     1139    11     9     2     2     0     8    1
sigapl     424     5962    0     5910     7     0     7     7     0     8    0
futexpl     64    57318    0    57313     1     0     1     1     0     8    0
knotepl    120      450    0        0    10     1     9    10     0     8    0
kqueuepl   216     1577    0     1569    42    41     1     6     0     8    0
pipepl     320     1875    0     1847    60    56     4    13     0     8    1
fdescpl    496     5944    0     5910     6     1     5     6     0     8    0
pool(0xffffffff82c89eb0:fdescpl): page inconsistency: page 0xfffffd806648a000; 2 on list, 5 missing, 8 items per page
filepl     152    49563    0    49290    94    78    16    20     0     8    5
lockfpl    104      513    0      511     1     0     1     1     0     8    0
lockfspl    48      208    0      206     1     0     1     1     0     8    0
sessionpl  144       25    0        9     1     0     1     1     0     8    0
pgrppl      48      668    0      652     1     0     1     1     0     8    0
ucredpl    104     6780    0     6762     1     0     1     1     0     8    0
zombiepl   144     5910    0     5910     1     0     1     1     0     8    1
processpl  1072    5963    0     5910     5     1     4     5     0     8    0
procpl     696    18196    0    18119    22    13     9     9     0     8    1
sosppl     168       64    0       62    11    10     1     1     0     8    0
sockpl     488    18550    0    18487   359   345    14    30     0     8    6
mcl64k     65536     25    0        0     4     1     3     3     0     8    0
mcl16k     16384     17    0        0     3     0     3     3     0     8    0
mcl12k     12288     25    0        0     2     0     2     2     0     8    0
mcl9k      9216      18    0        0     2     0     2     2     0     8    0
mcl8k      8192      26    0        0     4     1     3     3     0     8    0
mcl4k      4096      34    0        0     4     1     3     3     0     8    0
mcl2k2     2112       7    0        0     1     0     1     1     0     8    0
mcl2k      2048     328    0        0    31     3    28    31     0     8    0
mtagpl      96        4    0        0     1     0     1     1     0     8    0
mbufpl     256     1524    0        0    81     0    81    81     0     8    0
bufpl      288    13968    0     7647   452     0   452   452     0     8    0
anonpl      24  1333970    0  1319588   216   105   111   136     0   186    0
amapchunkpl 152  173250    0   172439   121    78    43    47     0   158    8
amappl16   200    16810    0    16455   129   108    21    42     0     8    0
amappl15   192       30    0       28     1     0     1     1     0     8    0
amappl14   184      160    0      146     2     1     1     2     0     8    0
amappl13   176       14    0       12     1     0     1     1     0     8    0
amappl12   168      430    0      427     1     0     1     1     0     8    0
amappl11   160       47    0       36     1     0     1     1     0     8    0
amappl10   152       41    0       29     1     0     1     1     0     8    0
amappl9    144      980    0      980     3     2     1     1     0     8    1
amappl8    136      409    0      297     4     0     4     4     0     8    0
amappl7    128      161    0      138     2     0     2     2     0     8    0
amappl6    120      224    0      212     2     1     1     2     0     8    0
amappl5    112      217    0      210     1     0     1     1     0     8    0
amappl4    104      620    0      595     2     1     1     2     0     8    0
amappl3     96    18581    0    18518     3     1     2     3     0     8    0
amappl2     88     6629    0     6554     3     1     2     3     0     8    0
amappl1     80   140353    0   139584    27     9    18    26     0     8    0
amappl      88    42708    0    42485     7     1     6     6     0    92    0
dma4096    4096       1    0        1     1     1     0     1     0     8    0
dma1024    1024       1    0        0     1     0     1     1     0     8    0
dma256     256        6    0        6     1     1     0     1     0     8    0
dma128     128      253    0      253     1     1     0     1     0     8    0
dma64       64        6    0        6     1     1     0     1     0     8    0
dma32       32        7    0        7     1     1     0     1     0     8    0
dma16       16       18    0       17     1     0     1     1     0     8    0
aobjpl      72      130    0        0     3     0     3     3     0     8    0
uaddrrnd    24     5944    0     5910     1     0     1     1     0     8    0
uaddrbest   32        2    0        0     1     0     1     1     0     8    0
uaddr       24     5944    0     5910     1     0     1     1     0     8    0
vmmpekpl   168    56470    0    56403     4     0     4     4     0     8    0
vmmpepl    168   561470    0   558644   213    76   137   148     0   357    2
vmsppl     440     5943    0     5910     5     0     5     5     0     8    0
rwobjpl     56   163262    0   155650   119     8   111   114     0     8    0
pdppl      4096   11895    0    11820   208   127    81    93     0     8    6
pvpl        32  2504110    0  2483630   491   292   199   361     0   265   12
pmappl     248     5943    0     5910     4     1     3     3     0     8    0
extentpl    40       56    0       38     1     0     1     1     0     8    0
phpool     112     1152    0      265    26     0    26    26     0     8    0
ddb{0}> machine ddbcpu 0
Invalid cpu 0
ddb{0}> trace
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:437
panic(ffffffff827bd7c7) at panic+0x177 sys/kern/subr_prf.c:198
pool_do_get(ffffffff82c89eb0,9,ffff800023cf8ef8) at pool_do_get+0x474 sys/kern/subr_pool.c:739
pool_get(ffffffff82c89eb0,9) at pool_get+0xe9 sys/kern/subr_pool.c:582
fdcopy(ffff8000ffff9928) at fdcopy+0x44 fdinit sys/kern/kern_descrip.c:1067 [inline]
fdcopy(ffff8000ffff9928) at fdcopy+0x44 sys/kern/kern_descrip.c:1106
process_new(ffff800029588350,ffff8000ffff9928,1) at process_new+0x2bc sys/kern/kern_fork.c:255
fork1(ffff8000212142d8,1,ffffffff81cbbb00,0,ffff800023cf9140,0) at fork1+0x30b sys/kern/kern_fork.c:379
syscall(ffff800023cf91c0) at syscall+0x555 mi_syscall sys/sys/syscall_mi.h:113 [inline]
syscall(ffff800023cf91c0) at syscall+0x555 sys/arch/amd64/amd64/trap.c:626
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7f7fffff9620, count: -9
ddb{0}> machine ddbcpu 1
Stopped at      x86_ipi_db+0x1a:        addq    $0x8,%rsp
x86_ipi_db(ffff800020d68ff0) at x86_ipi_db+0x1a sys/arch/amd64/amd64/db_interface.c:393
x86_ipi_handler() at x86_ipi_handler+0xb7 sys/arch/amd64/amd64/ipi.c:106
Xresume_lapic_ipi() at Xresume_lapic_ipi+0x23
__sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x7 sys/dev/kcov.c:144
syscall(ffff80002a9fde70) at syscall+0x53d mi_syscall sys/sys/syscall_mi.h:112 [inline]
syscall(ffff80002a9fde70) at syscall+0x53d sys/arch/amd64/amd64/trap.c:626
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7f7fffff0d80, count: 9
ddb{1}> trace
x86_ipi_db(ffff800020d68ff0) at x86_ipi_db+0x1a sys/arch/amd64/amd64/db_interface.c:393
x86_ipi_handler() at x86_ipi_handler+0xb7 sys/arch/amd64/amd64/ipi.c:106
Xresume_lapic_ipi() at Xresume_lapic_ipi+0x23
__sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x7 sys/dev/kcov.c:144
syscall(ffff80002a9fde70) at syscall+0x53d mi_syscall sys/sys/syscall_mi.h:112 [inline]
syscall(ffff80002a9fde70) at syscall+0x53d sys/arch/amd64/amd64/trap.c:626
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7f7fffff0d80, count: -6

Crashes (7):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets Title
ci-openbsd-setuid 2023/02/04 17:10 openbsd 9c36af15d182 be607b78 .config console log report [disk image] [bsd.gdb] [kernel image] pool: free list modified: fdescpl
ci-openbsd-setuid 2023/01/31 16:02 openbsd 71410e9b97ab 9a6f477c .config console log report [disk image] [bsd.gdb] [kernel image] pool: free list modified: fdescpl
ci-openbsd-setuid 2023/01/21 22:00 openbsd 8b8fb239a1ab cc0f9968 .config console log report [disk image] [bsd.gdb] [kernel image] pool: free list modified: fdescpl
ci-openbsd-setuid 2022/12/28 14:42 openbsd d313d8cd45e3 44712fbc .config console log report [disk image] [bsd.gdb] [kernel image] pool: free list modified: fdescpl
ci-openbsd-setuid 2022/10/18 04:09 openbsd 62d244ed99f1 94744d21 .config console log report [disk image] [bsd.gdb] [kernel image] pool: free list modified: fdescpl
ci-openbsd-multicore 2022/09/19 05:56 openbsd 54d482279aa5 dd9a85ff .config console log report pool: free list modified: fdescpl
ci-openbsd-setuid 2022/07/07 19:54 openbsd 17ba98042263 bff65f44 .config console log report pool: free list modified: fdescpl
* Struck through repros no longer work on HEAD.