syzbot


assert "kd_lookup(kd->kd_unit) == NULL" failed in kcov.c (3)

Status: upstream: reported on 2025/05/13 21:21
Reported-by: syzbot+6e940980f272835ed130@syzkaller.appspotmail.com
First crash: 41d, last: 9d23h
Similar bugs (2)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
openbsd assert "kd_lookup(kd->kd_unit) == NULL" failed in kcov.c 2 239d 276d 0/3 auto-obsoleted due to no activity on 2025/01/26 12:26
openbsd assert "kd_lookup(kd->kd_unit) == NULL" failed in kcov.c (2) 1 131d 131d 0/3 auto-obsoleted due to no activity on 2025/05/13 16:49

Sample crash report:
panic: kernel diagnostic assertion "kd_lookup(kd->kd_unit) == NULL" failed: file "/syzkaller/managers/multicore/kernel/sys/dev/kcov.c", line 306
Stopped at      db_enter+0x25:  addq    $0x8,%rsp
    TID    PID    UID     PRFLAGS     PFLAGS  CPU  COMMAND
*  3612  84429      0           0  0x4000000    0K syz-executor
db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438
panic(ffffffff83466a0b) at panic+0x1e5 sys/kern/subr_prf.c:198
__assert(ffffffff83413bf2,ffffffff8335262f,132,ffffffff833f1155) at __assert+0x29 sys/kern/subr_prf.c:-1
kcovopen(113d4,1,2000,ffff8000fffe27e0) at kcovopen+0x14f kd_lookup sys/dev/kcov.c:478 [inline]
kcovopen(113d4,1,2000,ffff8000fffe27e0) at kcovopen+0x14f sys/dev/kcov.c:306
spec_open_clone(ffff80002a30feb8) at spec_open_clone+0x287 sys/kern/spec_vnops.c:722
spec_open(ffff80002a30feb8) at spec_open+0x329 sys/kern/spec_vnops.c:148
VOP_OPEN(fffffd8072b13018,1,fffffd80097fb7b8,ffff8000fffe27e0) at VOP_OPEN+0x8b sys/kern/vfs_vops.c:138
vn_open(ffff80002a310108,1,0) at vn_open+0x708 sys/kern/vfs_vnops.c:177
doopenat(ffff8000fffe27e0,ffffff9c,200000000080,0,0,ffff80002a3102b0) at doopenat+0x32e sys/kern/vfs_syscalls.c:1137
syscall(ffff80002a310360) at syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline]
syscall(ffff80002a310360) at syscall+0xbc6 sys/arch/amd64/amd64/trap.c:579
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x8b923d4abb0, count: 4
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: kernel diagnostic assertion "kd_lookup(kd->kd_unit) == NULL" failed: file "/syzkaller/managers/multicore/kernel/sys/dev/kcov.c", line 306
ddb{0}> trace
db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438
panic(ffffffff83466a0b) at panic+0x1e5 sys/kern/subr_prf.c:198
__assert(ffffffff83413bf2,ffffffff8335262f,132,ffffffff833f1155) at __assert+0x29 sys/kern/subr_prf.c:-1
kcovopen(113d4,1,2000,ffff8000fffe27e0) at kcovopen+0x14f kd_lookup sys/dev/kcov.c:478 [inline]
kcovopen(113d4,1,2000,ffff8000fffe27e0) at kcovopen+0x14f sys/dev/kcov.c:306
spec_open_clone(ffff80002a30feb8) at spec_open_clone+0x287 sys/kern/spec_vnops.c:722
spec_open(ffff80002a30feb8) at spec_open+0x329 sys/kern/spec_vnops.c:148
VOP_OPEN(fffffd8072b13018,1,fffffd80097fb7b8,ffff8000fffe27e0) at VOP_OPEN+0x8b sys/kern/vfs_vops.c:138
vn_open(ffff80002a310108,1,0) at vn_open+0x708 sys/kern/vfs_vnops.c:177
doopenat(ffff8000fffe27e0,ffffff9c,200000000080,0,0,ffff80002a3102b0) at doopenat+0x32e sys/kern/vfs_syscalls.c:1137
syscall(ffff80002a310360) at syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline]
syscall(ffff80002a310360) at syscall+0xbc6 sys/arch/amd64/amd64/trap.c:579
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x8b923d4abb0, count: -11
ddb{0}> show registers
rdi                                0
rsi                              0x1
rbp               0xffff80002a30fc90
rbx               0xffffffff8382bdd7    cpu_info_full_primary+0x2dd7
rdx               0xffff800001475680
rcx               0xffff8000fffe27e0
rax               0xffffffff8382aff0    cpu_info_full_primary+0x1ff0
r8                 0x101010101010101
r9                0x8080808080808080
r10               0xafe31ff5f0e9f739
r11               0x6fc8c68a7a1670c0
r12               0xffffffff8382bbd8    cpu_info_full_primary+0x2bd8
r13                                0
r14                                0
r15                              0x1
rip               0xffffffff81757c05    db_enter+0x25
cs                               0x8
rflags                         0x246
rsp               0xffff80002a30fc80
ss                              0x10
db_enter+0x25:  addq    $0x8,%rsp
ddb{0}> show proc
PROC (syz-executor) tid=3612 pid=84429 tcnt=5 stat=onproc
    flags process=0 proc=4000000<THREAD>
    runpri=86, usrpri=86, slppri=32, nice=20
    wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0
    forw=0xffffffffffffffff, list=0xffff8000fffeacf8,0xffffffff83922c10
    process=0xffff8000ffff7a28 user=0xffff80002a30b000, vmspace=0xfffffd800b026960
    estcpu=36, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0
ddb{0}> ps
   PID     TID   PPID    UID  S       FLAGS  WAIT          COMMAND
 84429  332891  64609      0  2           0                syz-executor
 84429  163317  64609      0  3   0x4000080  ttyopn        syz-executor
 84429  427533  64609      0  3   0x4000080  ttyopn        syz-executor
 84429   96679  64609      0  3   0x4000080  ttyopn        syz-executor
*84429    3612  64609      0  7   0x4000000                syz-executor
 91792  426681  53632      0  2           0                syz-executor
 91792  446415  53632      0  3   0x4000080  ttyopn        syz-executor
 91792  268276  53632      0  3   0x4000080  ttyopn        syz-executor
 91792  499330  53632      0  3   0x4000080  ttyopn        syz-executor
 91792   92196  53632      0  3   0x4000080  fsleep        syz-executor
 77652  205204      0      0  3     0x14200  acct          acct
 88056   22428      1      0  3    0x100083  ttyin         getty
  6283  450098   9990      0  3        0x82  nanoslp       syz-executor
 64650  296722   9990      0  3         0x2  biowait       syz-executor
 53632  456597   9990      0  3        0x82  nanoslp       syz-executor
 16870  153722      0      0  3     0x14200  bored         sosplice
 94177  519795   9990      0  2         0x2                syz-executor
  8756  180926   9990      0  3        0x82  piperd        syz-executor
 48752  161888   9990      0  2         0x2                syz-executor
 33161   69013   9990      0  3        0x82  piperd        syz-executor
 64609  485753   9990      0  3        0x82  nanoslp       syz-executor
  9990   54474  43259      0  3        0x82  nanoslp       syz-executor
 43259  191156   1370      0  3    0x10008a  sigsusp       ksh
  1370  462176  71331      0  3        0x98  kqread        sshd-session
 71331  340936  82491      0  3        0x92  kqread        sshd-session
 82491  177423      1      0  3        0x88  kqread        sshd
 10997  446802  98702     74  3   0x1100092  bpf           pflogd
 98702  465576      1      0  3        0x80  sbwait        pflogd
 69598  283984  25617     73  3   0x1100090  kqread        syslogd
 25617   12662      1      0  3    0x100082  sbwait        syslogd
   152  518239      1      0  3    0x100080  kqread        resolvd
 80583  448814  47616     77  3    0x100092  kqread        dhcpleased
 11761  475301  47616     77  3    0x100092  kqread        dhcpleased
 47616  417806      1      0  3        0x80  kqread        dhcpleased
 46472  348623      0      0  3     0x14200  bored         smr
 77407  485880      0      0  2     0x14200                zerothread
 23276  240256      0      0  3     0x14200  aiodoned      aiodoned
 13810   15233      0      0  3     0x14200  syncer        update
 31543  466343      0      0  3     0x14200  cleaner       cleaner
 46684   82877      0      0  3     0x14200  reaper        reaper
  6767   48446      0      0  3     0x14200  pgdaemon      pagedaemon
 14951  163138      0      0  3     0x14200  bored         viomb
 70166   64943      0      0  3  0x40014200  acpi0         acpi0
 57459  376898      0      0  7  0x40014200                idle1
 69726  273515      0      0  3     0x14200  bored         softnet3
 85785  485618      0      0  3     0x14200  bored         softnet2
 99276  416404      0      0  3     0x14200  bored         softnet1
 86339  359752      0      0  3     0x14200  bored         softnet0
 62176   93521      0      0  3     0x14200  bored         systqmp
  5544  396013      0      0  3     0x14200  bored         systq
 94622  196286      0      0  3     0x14200  tmoslp        softclockmp
 31073  471880      0      0  3  0x40014200  tmoslp        softclock
 50979   23921      0      0  3  0x40014200                idle0
     1  356796      0      0  3        0x82  wait          init
     0       0     -1      0  3  0x10010200  scheduler     swapper
ddb{0}> show all locks
CPU 0:
exclusive mutex /syzkaller/managers/multicore/kernel/sys/dev/kcov.c:129 r = 0 (0xffffffff8383af00)
#0  witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline]
#0  witness_lock+0x5bb sys/kern/subr_witness.c:1160
#1  mtx_enter_try+0x1ad sys/kern/kern_lock.c:298
#2  mtx_enter+0x62 sys/kern/kern_lock.c:255
#3  kcovopen+0x63 sys/dev/kcov.c:306
#4  spec_open_clone+0x287 sys/kern/spec_vnops.c:722
#5  spec_open+0x329 sys/kern/spec_vnops.c:148
#6  VOP_OPEN+0x8b sys/kern/vfs_vops.c:138
#7  vn_open+0x708 sys/kern/vfs_vnops.c:177
#8  doopenat+0x32e sys/kern/vfs_syscalls.c:1137
#9  syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline]
#9  syscall+0xbc6 sys/arch/amd64/amd64/trap.c:579
#10 Xsyscall+0x128
Process 84429 (syz-executor) thread 0xffff8000fffe27e0 (3612)
Process 64650 (syz-executor) thread 0xffff8000fffe2f90 (296722)
Process 94177 (syz-executor) thread 0xffff8000ffff07d0 (519795)
Process 48752 (syz-executor) thread 0xffff8000ffff02b0 (161888)
ddb{0}> show malloc
           Type InUse  MemUse  HighUse   Limit  Requests Type Lim
         devbuf 10204  11042K   11475K 166960K     14317        0
            pcb    19     12K      12K 166960K       316        0
         rtable    84     10K      12K 166960K       752        0
             pf    28     16K      82K 166960K       263        0
         ifaddr    15      2K       7K 166960K       169        0
        ifgroup    35      1K       2K 166960K       296        0
         sysctl     4      1K       9K 166960K        14        0
       counters    58     35K      37K 166960K       350        0
       ioctlops     0      0K       4K 166960K      1756        0
            iov     0      0K      24K 166960K        68        0
          mount     1      1K       1K 166960K         1        0
            log     0      0K       0K 166960K         4        0
         vnodes  1348     85K      85K 166960K      3151        0
      UFS quota     1     32K      32K 166960K         1        0
      UFS mount     5     36K      36K 166960K         5        0
            shm     2     48K      60K 166960K        25        0
         VM map     2      1K       1K 166960K         2        0
            sem    18     37K      37K 166960K        36        0
        dirhash    18      3K       3K 166960K        81        0
           ACPI  1692    195K     286K 166960K     12470        0
      file desc    15     53K      98K 166960K      3312        0
          sigio     0      0K       0K 166960K        35        0
           proc    73     91K     140K 166960K       780        0
        subproc    74      4K       4K 166960K       113        0
    NFS srvsock     1      0K       0K 166960K         1        0
     NFS daemon     1     16K      16K 166960K         1        0
    ip_moptions     0      0K       0K 166960K       187        0
       in_multi    13      1K       7K 166960K       234        0
    ether_multi     1      0K       0K 166960K        20        0
            mrt     2      0K       0K 166960K        56        0
    ISOFS mount     1     32K      32K 166960K         1        0
  MSDOSFS mount     1     16K      16K 166960K         1        0
           ttys    97    440K     440K 166960K        97        0
           exec     0      0K       1K 166960K       541        0
   fusefs mount     1     32K      32K 166960K         1        0
     pfkey data     0      0K       0K 166960K         1        0
            tdb     3      0K       0K 166960K         3        0
        VM swap     8     62K      64K 166960K        10        0
       UVM amap   223    160K     168K 166960K     28781        0
       UVM aobj    36      2K       4K 166960K        40        0
     pinsyscall    40     80K     100K 166960K      4527        0
        memdesc     1      4K       4K 166960K         1        0
    crypto data     1      1K       1K 166960K         1        0
    ip6_options     0      0K       0K 166960K       109        0
            NDP     7      0K       2K 166960K       114        0
           temp    57   8690K    8799K 166960K     88238        0
         kqueue    13     20K      30K 166960K       274        0
      SYN cache     2     16K      16K 166960K         2        0
ddb{0}> show all pools
Name      Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle
plcache    128       26    0        0     1     0     1     1     0     8    0
rtpcb      120      100    0       97     1     0     1     1     0     8    0
rtentry    176      246    0      229     6     2     4     6     0     8    0
unpcb      144      589    0      572     2     1     1     2     0     8    0
syncache   336        5    0        5     2     2     0     1     0     8    0
tcpcb      736      396    0      391     1     0     1     1     0     8    0
arp        128       40    0       36     1     0     1     1     0     8    0
inpcb      328     1396    0     1386     5     3     2     2     0     8    0
nd6        144       40    0       38     1     0     1     1     0     8    0
pkpcb       40        7    0        7     3     3     0     1     0     8    0
kcovpl      48       12    0        4     1     0     1     1     0     8    0
mppekey    1024       1    0        1     1     1     0     1     0     8    0
ppxss      1192     108    0      108     3     2     1     1     0     8    1
pppxif     1504      19    0       19     3     3     0     1     0     8    0
pffrag     232       11    0       10     2     1     1     1     0   482    0
pffrnode    88        9    0        8     2     1     1     1     0     8    0
pffrent     40       17    0       15     2     1     1     1     0     8    0
pfosfp      40     1430    0     1006     5     0     5     5     0     8    0
pfosfpen   112     1430    0      714    21     0    21    21     0     8    0
pfrktable  1344       2    0        0     1     0     1     1     0     8    0
pfanchor   1288       1    0        1     1     1     0     1     0     8    0
pftag       88        3    0        0     1     0     1     1     0     8    0
pfstitem    24      162    0      129     1     0     1     1     0     8    0
pfstkey    128      162    0      129     4     0     4     4     0     8    0
pfstate    384      162    0      129    11     1    10    11     0     8    0
pfrule     1344      51    0       35     3     1     2     2     0     8    0
rttmr      136       16    0       16     3     3     0     1     0     8    0
art_heap8  4096       3    0        1     3     1     2     3     0     8    0
art_heap4  256     1138    0     1042    30    19    11    29     0     8    1
art_table   32     1141    0     1043     4     2     2     4     0     8    0
art_node    16      239    0      228     1     0     1     1     0     8    0
sysvmsgpl   40       12    0        8     1     0     1     1     0     8    0
semupl     112        2    0        2     2     2     0     1     0     8    0
semapl     112       28    0       12     1     0     1     1     0     8    0
shmpl      112       37    0        4     1     0     1     1     0     8    0
dirhash    1024      64    0       43     3     0     3     3     0     8    0
dino2pl    256     6228    0     4714    96     0    96    96     0     8    0
ffsino     288     6228    0     4714   109     0   109   109     0     8    0
nchpl      144     9862    0     9300    63    38    25    63     0     8    0
rtmask      32       27    0       27     4     3     1     1     0     8    1
uvmvnodes   80     3125    0        0    64     0    64    64     0     8    0
vnodes     216     3125    0        0   174     0   174   174     0     8    0
namei      1024   25629    0    25629     2     1     1     1     0     8    1
percpumem   16      190    0      146     1     0     1     1     0     8    0
kstatmem   264      182    0      164     3     1     2     3     0     8    0
acpiwqpl    32        1    0        1     1     0     1     1     1     8    1
scsiplug    72       12    0       12     8     8     0     1     0     8    0
scxspl     216    32165    0    32164    12    11     1     8     1     8    0
plimitpl   152      183    0      166     1     0     1     1     0     8    0
sigapl     424     3614    0     3565     8     2     6     7     0     8    0
knotepl    120      562    0        0    16     0    16    16     0     8    0
kqueuepl   224      414    0      405     2     1     1     2     0     8    0
pipepl     336      188    0      161     4     1     3     3     0     8    0
fdescpl    520     3588    0     3559     3     0     3     3     0     8    0
filepl     160    10228    0    10010    10     0    10    10     0     8    0
lockfpl    104      523    0      521     1     0     1     1     0     8    0
lockfspl    48      226    0      224     1     0     1     1     0     8    0
sessionpl  144       31    0       22     1     0     1     1     0     8    0
pgrppl      48       57    0       40     1     0     1     1     0     8    0
ucredpl    104     1304    0     1290     1     0     1     1     0     8    0
zombiepl   144     4462    0     4461     3     2     1     1     0     8    0
processpl  1240    3614    0     3565     6     1     5     5     0     8    0
procpl     656     7651    0     7594     7     1     6     6     0     8    0
srpgc       96       29    0       29     7     7     0     1     0     8    0
sosppl     168       40    0       40     4     4     0     1     0     8    0
sockpl     728     2110    0     2079     7     3     4     5     0     8    0
mcl64k     65536      5    0        0     1     0     1     1     0     8    0
mcl16k     16384      3    0        0     1     0     1     1     0     8    0
mcl12k     12288      5    0        0     1     0     1     1     0     8    0
mcl9k      9216       6    0        0     1     0     1     1     0     8    0
mcl8k      8192      13    0        0     2     0     2     2     0     8    0
mcl4k      4096     109    0        0    14     0    14    14     0     8    0
mcl2k2     2112       2    0        0     1     0     1     1     0     8    0
mcl2k      2048      15    0        0     2     0     2     2     0     8    0
mtagpl      96       53    0        0     2     0     2     2     0     8    0
mbufpl     256     1191    0        0    74     0    74    74     0     8    0
bufpl      280     9381    0     3239   439     0   439   439     0     8    0
anonpl      32    10641    0        0    86     0    86    86     0   246    0
amapchunkpl 152   97237    0    96793    51    28    23    30     0   158    0
amappl16   200     6564    0     6528    54    51     3    25     0     8    0
amappl15   192       11    0       11     2     2     0     1     0     8    0
amappl14   184      128    0      116     1     0     1     1     0     8    0
amappl13   176        6    0        6     1     1     0     1     0     8    0
amappl12   168     4309    0     4282     3     1     2     2     0     8    0
amappl11   160       52    0       38     1     0     1     1     0     8    0
amappl10   152       17    0       15     2     1     1     1     0     8    0
amappl9    144      314    0      314     2     2     0     1     0     8    0
amappl8    136       58    0       55     1     0     1     1     0     8    0
amappl7    128      121    0      109     1     0     1     1     0     8    0
amappl6    120      216    0      213     2     1     1     1     0     8    0
amappl5    112      150    0      140     1     0     1     1     0     8    0
amappl4    104      339    0      319     1     0     1     1     0     8    0
amappl3     96    21676    0    21583     5     1     4     4     0     8    0
amappl2     88      708    0      645     2     0     2     2     0     8    0
amappl1     80    22177    0    21591    16     2    14    14     0     8    0
amappl      88    27772    0    27622     6     1     5     5     0    92    0
dma65536   65536      1    0        1     1     1     0     1     0     8    0
dma16384   16384      1    0        1     1     1     0     1     0     8    0
dma4096    4096       2    0        2     2     2     0     1     0     8    0
dma1024    1024       2    0        1     1     0     1     1     0     8    0
dma512     512        1    0        1     1     1     0     1     0     8    0
dma256     256        7    0        7     2     2     0     1     0     8    0
dma128     128      259    0      259     6     6     0     1     0     8    0
dma64       64        8    0        8     3     3     0     1     0     8    0
dma32       32        7    0        7     1     1     0     1     0     8    0
dma16       16       19    0       18     1     0     1     1     0     8    0
aobjpl      72       39    0        4     1     0     1     1     0     8    0
uaddrrnd    24     3588    0     3559     1     0     1     1     0     8    0
uaddrbest   32        2    0        0     1     0     1     1     0     8    0
uaddr       24     3588    0     3559     1     0     1     1     0     8    0
vmmpekpl   168    24800    0    24744     3     0     3     3     0     8    0
vmmpepl    168   214039    0   212206   123    32    91   106     0   357    0
vmsppl     480     3587    0     3559     7     3     4     5     0     8    0
rwobjpl     72    50663    0    46576    85     9    76    79     0     8    0
pdppl      4096    7183    0     7118   115    44    71    85     0     8    6
pvpl        32    18731    0        0   153     2   151   151     0   265    0
pmappl     256     3587    0     3559     4     1     3     3     0     8    0
extentpl    40       45    0       27     1     0     1     1     0     8    0
phpool     112      472    0       77    12     0    12    12     0     8    0
ddb{0}> machine ddbcpu 0
Invalid cpu 0
ddb{0}> trace
db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438
panic(ffffffff83466a0b) at panic+0x1e5 sys/kern/subr_prf.c:198
__assert(ffffffff83413bf2,ffffffff8335262f,132,ffffffff833f1155) at __assert+0x29 sys/kern/subr_prf.c:-1
kcovopen(113d4,1,2000,ffff8000fffe27e0) at kcovopen+0x14f kd_lookup sys/dev/kcov.c:478 [inline]
kcovopen(113d4,1,2000,ffff8000fffe27e0) at kcovopen+0x14f sys/dev/kcov.c:306
spec_open_clone(ffff80002a30feb8) at spec_open_clone+0x287 sys/kern/spec_vnops.c:722
spec_open(ffff80002a30feb8) at spec_open+0x329 sys/kern/spec_vnops.c:148
VOP_OPEN(fffffd8072b13018,1,fffffd80097fb7b8,ffff8000fffe27e0) at VOP_OPEN+0x8b sys/kern/vfs_vops.c:138
vn_open(ffff80002a310108,1,0) at vn_open+0x708 sys/kern/vfs_vnops.c:177
doopenat(ffff8000fffe27e0,ffffff9c,200000000080,0,0,ffff80002a3102b0) at doopenat+0x32e sys/kern/vfs_syscalls.c:1137
syscall(ffff80002a310360) at syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline]
syscall(ffff80002a310360) at syscall+0xbc6 sys/arch/amd64/amd64/trap.c:579
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x8b923d4abb0, count: -11
ddb{0}> machine ddbcpu 1

Crashes (2):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2025/06/14 14:51 openbsd 2b4e04f3782d 5f4b362d .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore assert "kd_lookup(kd->kd_unit) == NULL" failed in kcov.c
2025/05/13 21:20 openbsd 6405849dc70d 7344edeb .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-main assert "kd_lookup(kd->kd_unit) == NULL" failed in kcov.c
* Struck through repros no longer work on HEAD.