uvm_fault: bpfioctl (6)

Status: upstream: reported on 2026/06/24 02:48
Reported-by: syzbot+db67bdb8140ac0f321d1@syzkaller.appspotmail.com
First crash: 66d, last: 44d
Similar bugs (5)
Kernel Title Rank 🛈 Repro Cause bisect Fix bisect Count Last Reported Patched Status
openbsd uvm_fault: bpfioctl -1 syz, C 14 2511d 2595d 3/4 fixed on 2019/10/22 13:03
openbsd uvm_fault: bpfioctl (4) -1 1 888d 888d 0/4 auto-obsoleted due to no activity on 2024/06/22 18:07
openbsd uvm_fault: bpfioctl (2) -1 2 1431d 1433d 0/4 auto-obsoleted due to no activity on 2022/12/27 04:23
openbsd uvm_fault: bpfioctl (3) -1 1 1149d 1149d 0/4 auto-obsoleted due to no activity on 2023/10/05 10:17
openbsd uvm_fault: bpfioctl (5) -1 4 222d 378d 0/4 auto-obsoleted due to no activity on 2026/04/19 19:41

Sample crash report:
uvm_fault(0xfffff4006cd5a5d8, 0x30, 0, 1) -> e
kernel: page fault trap, code=0
Stopped at      bpfioctl+0x1189:        movq    0x30(%rax),%rdi
    TID    PID    UID     PRFLAGS     PFLAGS  CPU  COMMAND
*351076  86133      0           0  0x4000000    1  syz-executor
 292870  24571      0     0x14000      0x200    0  reaper
bpfioctl(61700,20004269,ffff800034b91510,1,ffff800035799248) at bpfioctl+0x1189 sys/net/bpf.c:892
VOP_IOCTL(fffff4006cde63b8,20004269,ffff800034b91510,1,fffff400097fd618,ffff800035799248) at VOP_IOCTL+0xac sys/kern/vfs_vops.c:264
vn_ioctl(fffff40067ed47c8,20004269,ffff800034b91510,ffff800035799248) at vn_ioctl+0xf8 sys/kern/vfs_vnops.c:537
sys_ioctl(ffff800035799248,ffff800034b916f0,ffff800034b91640) at sys_ioctl+0x674 sys/kern/sys_generic.c:-1
syscall(ffff800034b916f0) at syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline]
syscall(ffff800034b916f0) at syscall+0xbd4 sys/arch/amd64/amd64/trap.c:783
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x8d321dda140, count: 9
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{1}> 
ddb{1}> set $lines = 0
ddb{1}> set $maxwidth = 0
ddb{1}> show panic
*cpu1: uvm_fault(0xfffff4006cd5a5d8, 0x30, 0, 1) -> e
ddb{1}> show kasan
No such command
ddb{1}> trace
bpfioctl(61700,20004269,ffff800034b91510,1,ffff800035799248) at bpfioctl+0x1189 sys/net/bpf.c:892
VOP_IOCTL(fffff4006cde63b8,20004269,ffff800034b91510,1,fffff400097fd618,ffff800035799248) at VOP_IOCTL+0xac sys/kern/vfs_vops.c:264
vn_ioctl(fffff40067ed47c8,20004269,ffff800034b91510,ffff800035799248) at vn_ioctl+0xf8 sys/kern/vfs_vnops.c:537
sys_ioctl(ffff800035799248,ffff800034b916f0,ffff800034b91640) at sys_ioctl+0x674 sys/kern/sys_generic.c:-1
syscall(ffff800034b916f0) at syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline]
syscall(ffff800034b916f0) at syscall+0xbd4 sys/arch/amd64/amd64/trap.c:783
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x8d321dda140, count: -6
ddb{1}> show registers
rdi               0xffff80002e780000
rsi                            0x9a1
rbp               0xffff800034b91340
rbx                            0x601
rdx               0xffff80002e780000
rcx                            0x9a0
rax                                0
r8                               0x1
r9                               0x1
r10               0x76cd71f19bf961f6
r11               0x1fbb92f3dd150b12
r12                                0
r13               0xffff80002999dff0
r14               0xffff80000163e000
r15               0xffff80000163e0c8
rip               0xffffffff831ab789    bpfioctl+0x1189
cs                               0x8
rflags                       0x10246    __ALIGN_SIZE+0xf246
rsp               0xffff800034b912e0
ss                                 0
bpfioctl+0x1189:        movq    0x30(%rax),%rdi
ddb{1}> show proc
PROC (syz-executor) tid=351076 pid=86133 tcnt=4 stat=onproc
    flags process=0 proc=4000000<THREAD>
    runpri=32, usrpri=78, slppri=32, nice=20
    wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0
    forw=0xffffffffffffffff, list=0xffff8000357987e8,0xffff800035798030
    process=0xffff80003afc04f0 user=0xffff800034b8c000, vmspace=0xfffff4006cd5a5d8
    estcpu=28, cpticks=0, pctcpu=0.0, user=0, sys=0, intr=0
ddb{1}> ps
   PID     TID   PPID   UID  S      PRLAGS     PFLAGS WAIT      COMMAND
 17742  506087  46967     0  2           0          0           syz-executor
 17742   44695  46967     0  3           0  0x4000000 netlock   syz-executor
 54361  500523  82143     0  2           0          0           syz-executor
 54361  218417  82143     0  3           0  0x4000080 fsleep    syz-executor
 57922  102021  91250     0  2           0          0           syz-executor
 57922   29084  91250     0  2           0  0x4000000           syz-executor
 86133  162438  71525     0  3           0       0x80 nanoslp   syz-executor
 86133  249171  71525     0  3           0  0x4000000 netlock   syz-executor
*86133  351076  71525     0  7           0  0x4000000           syz-executor
 86133  142013  71525     0  3           0  0x4000080 fsleep    syz-executor
 85929  402602      0     0  3     0x14000      0x200 acct      acct
 82143  448143  56470     0  3         0x2       0x80 nanoslp   syz-executor
 91250  384175  56470     0  3         0x2       0x80 nanoslp   syz-executor
 71525   11074  56470     0  3         0x2       0x80 nanoslp   syz-executor
 13334   24138  56470     0  3         0x2       0x80 nanoslp   syz-executor
   858  471817  56470     0  3         0x2          0 biowait   syz-executor
 46967  245087  56470     0  3         0x2       0x80 nanoslp   syz-executor
 49814   84386  56470     0  3         0x2          0 biowait   syz-executor
  5792   10238  56470     0  2         0x2          0           syz-executor
 56470   33506  53281     0  3         0x2          0 netlock   syz-executor
 53281    1844  26707     0  3    0x100002       0x88 sigsusp   ksh
 26707  239584  77373     0  3        0x10       0x88 kqread    sshd-session
 77373  225418  28614     0  3        0x12       0x80 kqread    sshd-session
 11648  143427      1     0  3    0x100003       0x80 ttyin     getty
 28614   86284      1     0  3           0       0x88 kqread    sshd
 77224  182348  82327    74  3   0x1100012       0x80 bpf       pflogd
 82327  373173      1     0  3           0       0x80 sbwait    pflogd
 38109  199633  85579    73  3   0x1100010       0x80 kqread    syslogd
 85579  154907      1     0  3    0x100002       0x80 sbwait    syslogd
 83710  462879      1     0  3    0x100000       0x80 kqread    resolvd
 85269  108149  24416    77  3    0x100012       0x80 kqread    dhcpleased
  3882   65912  24416    77  3    0x100012       0x80 kqread    dhcpleased
 24416  496670      1     0  3           0       0x80 kqread    dhcpleased
 44158  355281      0     0  3     0x14000      0x200 bored     smr
 17467  399266      0     0  2     0x14000      0x200           zerothread
 35051  255255      0     0  3     0x14000      0x200 aiodoned  aiodoned
 27353  245370      0     0  3     0x14000      0x200 syncer    update
 87191  469094      0     0  3     0x14000      0x200 cleaner   cleaner
 24571  292870      0     0  7     0x14000      0x200           reaper
 78979   42347      0     0  3     0x14000      0x200 pgdaemon  pagedaemon
 41849    1163      0     0  3     0x14000      0x200 bored     viomb
 94316  207121      0     0  3     0x14000 0x40000200 acpi0     acpi0
 45431   81440      0     0  3     0x14000 0x40000200           idle1
 86557  127773      0     0  3     0x14000      0x200 bored     softnet1
 16132  142204      0     0  3     0x14000      0x200 netlock   softnet0
 23946  357706      0     0  3     0x14000      0x200 bored     systqmp
 17644   66166      0     0  3     0x14000      0x200 bored     systq
 89998  230101      0     0  3     0x14000      0x200 netlock   softclockmp
 27035   84984      0     0  3     0x14000 0x40000200 tmoslp    softclock
 15478   92199      0     0  3     0x14000 0x40000200           idle0
     1  477799      0     0  3         0x2       0x80 wait      init
     0       0     -1     0  3     0x10000      0x200 scheduler swapper
ddb{1}> show all locks
Process 57922 (syz-executor) thread 0xffff8000357994e0 (29084)
exclusive rwlock fdlock r = 0 (0xffff800037faa8b0)
#0  witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline]
#0  witness_lock+0x5f1 sys/kern/subr_witness.c:1160
#1  rw_do_enter_write+0x419 sys/kern/kern_rwlock.c:320
#2  sys_socket+0x203 sys/kern/uipc_syscalls.c:106
#3  syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline]
#3  syscall+0xbd4 sys/arch/amd64/amd64/trap.c:783
#4  Xsyscall+0x128
Process 86133 (syz-executor) thread 0xffff8000357982b8 (249171)
exclusive rwlock clonelk r = 0 (0xffffffff83906098)
#0  witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline]
#0  witness_lock+0x5f1 sys/kern/subr_witness.c:1160
#1  rw_do_enter_write+0x419 sys/kern/kern_rwlock.c:320
#2  if_clone_destroy+0x93 sys/net/if.c:-1
#3  ifioctl+0x59d sys/net/if.c:2160
#4  sys_ioctl+0x674 sys/kern/sys_generic.c:-1
#5  syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline]
#5  syscall+0xbd4 sys/arch/amd64/amd64/trap.c:783
#6  Xsyscall+0x128
Process 86133 (syz-executor) thread 0xffff800035799248 (351076)
exclusive rwlock netlock r = 0 (0xffffffff83906190)
#0  witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline]
#0  witness_lock+0x5f1 sys/kern/subr_witness.c:1160
#1  rw_do_enter_write+0x419 sys/kern/kern_rwlock.c:320
#2  bpfioctl+0x117c sys/net/bpf.c:892
#3  VOP_IOCTL+0xac sys/kern/vfs_vops.c:264
#4  vn_ioctl+0xf8 sys/kern/vfs_vnops.c:537
#5  sys_ioctl+0x674 sys/kern/sys_generic.c:-1
#6  syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline]
#6  syscall+0xbd4 sys/arch/amd64/amd64/trap.c:783
#7  Xsyscall+0x128
exclusive kernel_lock &kernel_lock r = 0 (0xffffffff83a55480)
#0  witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline]
#0  witness_lock+0x5f1 sys/kern/subr_witness.c:1160
#1  __mp_acquire_count+0x58 sys/kern/kern_lock.c:-1
#2  sleep_finish+0x2d8 sys/kern/kern_synch.c:369
#3  rw_do_enter_write+0x1dc sys/kern/kern_rwlock.c:298
#4  bpfioctl+0x117c sys/net/bpf.c:892
#5  VOP_IOCTL+0xac sys/kern/vfs_vops.c:264
#6  vn_ioctl+0xf8 sys/kern/vfs_vnops.c:537
#7  sys_ioctl+0x674 sys/kern/sys_generic.c:-1
#8  syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline]
#8  syscall+0xbd4 sys/arch/amd64/amd64/trap.c:783
#9  Xsyscall+0x128
Process 858 (syz-executor) thread 0xffff80002a222540 (471817)
exclusive rrwlock inode r = 0 (0xfffff4006ed62da0)
#0  witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline]
#0  witness_lock+0x5f1 sys/kern/subr_witness.c:1160
#1  rw_do_enter_write+0x419 sys/kern/kern_rwlock.c:320
#2  rrw_enter+0xc6 sys/kern/kern_rwlock.c:621
#3  VOP_LOCK+0xbd sys/kern/vfs_vops.c:527
#4  vn_lock+0xa4 sys/kern/vfs_vnops.c:576
#5  vget+0x2a2 sys/kern/vfs_subr.c:692
#6  ufs_ihashget+0x185 sys/ufs/ufs/ufs_ihash.c:98
#7  ffs_vget+0x8c sys/ufs/ffs/ffs_vfsops.c:1203
#8  ufs_lookup+0x1a36 sys/ufs/ufs/ufs_lookup.c:478
#9  VOP_LOOKUP+0x6e sys/kern/vfs_vops.c:85
#10 vfs_lookup+0x963 sys/kern/vfs_lookup.c:580
#11 namei+0x7c5 sys/kern/vfs_lookup.c:250
#12 dounlinkat+0xc1 sys/kern/vfs_syscalls.c:1807
#13 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline]
#13 syscall+0xb17 sys/arch/amd64/amd64/trap.c:783
#14 Xsyscall+0x128
exclusive rrwlock inode r = 0 (0xfffff4006d786558)
#0  witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline]
#0  witness_lock+0x5f1 sys/kern/subr_witness.c:1160
#1  rw_do_enter_write+0x419 sys/kern/kern_rwlock.c:320
#2  rrw_enter+0xc6 sys/kern/kern_rwlock.c:621
#3  VOP_LOCK+0xbd sys/kern/vfs_vops.c:527
#4  vn_lock+0xa4 sys/kern/vfs_vnops.c:576
#5  vfs_lookup+0x12b sys/kern/vfs_lookup.c:431
#6  namei+0x7c5 sys/kern/vfs_lookup.c:250
#7  dounlinkat+0xc1 sys/kern/vfs_syscalls.c:1807
#8  syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline]
#8  syscall+0xb17 sys/arch/amd64/amd64/trap.c:783
#9  Xsyscall+0x128
Process 49814 (syz-executor) thread 0xffff80002a222a70 (84386)
exclusive rrwlock inode r = 0 (0xfffff4006e4efc38)
#0  witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline]
#0  witness_lock+0x5f1 sys/kern/subr_witness.c:1160
#1  rw_do_enter_write+0x419 sys/kern/kern_rwlock.c:320
#2  rrw_enter+0xc6 sys/kern/kern_rwlock.c:621
#3  VOP_LOCK+0xbd sys/kern/vfs_vops.c:527
#4  vn_lock+0xa4 sys/kern/vfs_vnops.c:576
#5  vget+0x2a2 sys/kern/vfs_subr.c:692
#6  ufs_ihashget+0x185 sys/ufs/ufs/ufs_ihash.c:98
#7  ffs_vget+0x8c sys/ufs/ffs/ffs_vfsops.c:1203
#8  ufs_lookup+0x1a36 sys/ufs/ufs/ufs_lookup.c:478
#9  VOP_LOOKUP+0x6e sys/kern/vfs_vops.c:85
#10 vfs_lookup+0x963 sys/kern/vfs_lookup.c:580
#11 namei+0x7c5 sys/kern/vfs_lookup.c:250
#12 dounlinkat+0xc1 sys/kern/vfs_syscalls.c:1807
#13 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline]
#13 syscall+0xb17 sys/arch/amd64/amd64/trap.c:783
#14 Xsyscall+0x128
exclusive rrwlock inode r = 0 (0xfffff4006d0d2688)
#0  witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline]
#0  witness_lock+0x5f1 sys/kern/subr_witness.c:1160
#1  rw_do_enter_write+0x419 sys/kern/kern_rwlock.c:320
#2  rrw_enter+0xc6 sys/kern/kern_rwlock.c:621
#3  VOP_LOCK+0xbd sys/kern/vfs_vops.c:527
#4  vn_lock+0xa4 sys/kern/vfs_vnops.c:576
#5  vget+0x2a2 sys/kern/vfs_subr.c:692
#6  cache_lookup+0x351 sys/kern/vfs_cache.c:222
#7  ufs_lookup+0x1e3 sys/ufs/ufs/ufs_lookup.c:160
#8  VOP_LOOKUP+0x6e sys/kern/vfs_vops.c:85
#9  vfs_lookup+0x963 sys/kern/vfs_lookup.c:580
#10 namei+0x7c5 sys/kern/vfs_lookup.c:250
#11 dounlinkat+0xc1 sys/kern/vfs_syscalls.c:1807
#12 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline]
#12 syscall+0xb17 sys/arch/amd64/amd64/trap.c:783
#13 Xsyscall+0x128
Process 56470 (syz-executor) thread 0xffff800045ffd760 (33506)
exclusive rwlock sbufsnd r = 0 (0xffff8000015ab0a8)
#0  witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline]
#0  witness_lock+0x5f1 sys/kern/subr_witness.c:1160
#1  rw_do_enter_write+0x419 sys/kern/kern_rwlock.c:320
#2  sblock+0xb6 sys/kern/uipc_socket2.c:536
#3  sosend+0x2e9 sys/kern/uipc_socket.c:639
#4  dofilewritev+0x2bd sys/kern/sys_generic.c:384
#5  sys_write+0xa2 sys/kern/sys_generic.c:300
#6  syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline]
#6  syscall+0xbd4 sys/arch/amd64/amd64/trap.c:783
#7  Xsyscall+0x128
Process 16132 (softnet0) thread 0xffff800045ffe298 (142204)
shared rwlock softnet0 r = 0 (0xffff80000002c078)
#0  witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline]
#0  witness_lock+0x5f1 sys/kern/subr_witness.c:1160
#1  taskq_thread+0x12a sys/kern/kern_task.c:442
#2  proc_trampoline+0x10
Process 89998 (softclockmp) thread 0xffff800045ffea60 (230101)
shared rwlock timeout r = 0 (0xffffffff83943768)
#0  witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline]
#0  witness_lock+0x5f1 sys/kern/subr_witness.c:1160
#1  timeout_run+0x131 sys/kern/kern_timeout.c:694
#2  softclock_thread_run+0xe7 sys/kern/kern_timeout.c:842
#3  softclock_thread_mp+0x86
#4  proc_trampoline+0x10
ddb{1}> show malloc
           Type InUse  MemUse  HighUse   Limit  Requests Type Lim
         devbuf 11084  12169K   12485K 166960K     12451        0
            pcb    17     14K      16K 166960K       143        0
         rtable   236      9K       9K 166960K       433        0
             pf    46     19K      39K 166960K        93        0
         ifaddr    44      7K       7K 166960K        61        0
        ifgroup    68      2K       3K 166960K        86        0
         sysctl     3      1K       9K 166960K         7        0
       counters    76     37K      38K 166960K       100        0
       ioctlops     0      0K       4K 166960K      1700        0
            iov     0      0K       8K 166960K        12        0
          mount     1      1K       1K 166960K         1        0
            log     0      0K       0K 166960K         4        0
         vnodes  1319     83K      83K 166960K      1628        0
      UFS quota     1     32K      32K 166960K         1        0
      UFS mount     5     36K      36K 166960K         5        0
            shm     2      1K       9K 166960K         8        0
         VM map     2      1K       1K 166960K         2        0
            sem    12      0K       0K 166960K        16        0
        dirhash    12      2K       2K 166960K        21        0
           ACPI  1734    201K     291K 166960K     11964        0
      file desc    15     53K     240K 166960K       425        0
          sigio     0      0K       0K 166960K         2        0
           proc    72    115K     164K 166960K       603        0
        subproc    72      4K       4K 166960K        81        0
    NFS srvsock     1      0K       0K 166960K         1        0
     NFS daemon     1     16K      16K 166960K         1        0
    ip_moptions     0      0K       0K 166960K        41        0
       in_multi    92      6K       6K 166960K       116        0
    ether_multi     1      0K       0K 166960K         3        0
            mrt     0      0K       0K 166960K        12        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       421        0
   fusefs mount     1     32K      32K 166960K         1        0
            tdb     3      0K       0K 166960K         3        0
        VM swap     8     62K      64K 166960K        10        0
       UVM amap   217    150K     160K 166960K      5538        0
       UVM aobj    10      2K       4K 166960K        12        0
     pinsyscall    41     82K     104K 166960K      1595        0
        memdesc     1      4K       4K 166960K         1        0
    crypto data     1      1K       1K 166960K         1        0
    ip6_options     0      0K       0K 166960K        13        0
            NDP    15      0K       1K 166960K        40        0
           temp    40   9115K    9179K 166960K     18207        0
         kqueue    13     20K      28K 166960K        73        0
      SYN cache     2     16K      16K 166960K         2        0
ddb{1}> show all pools
Name      Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle
plcache    128       28    0        0     1     0     1     1     0     8    0
rtpcb      120       58    0       55     1     0     1     1     0     8    0
rtentry    176      126    0       25     5     0     5     5     0     8    0
unpcb      144      136    0      119     1     0     1     1     0     8    0
syncache   336        7    0        7     1     1     0     1     0     8    0
tcpcb      736       68    0       63     1     0     1     1     0     8    0
arp        136       22    0        5     1     0     1     1     0     8    0
inpcb      328      492    0      483     7     5     2     7     0     8    1
nd6        152       27    0        6     1     0     1     1     0     8    0
pkpcb       40        2    0        2     1     1     0     1     0     8    0
kcovpl      48        9    0        1     1     0     1     1     0     8    0
ppxss      1192      10    0       10     1     0     1     1     0     8    1
pfstscr     40        4    0        4     1     0     1     1     0     8    1
pffrag     232        4    0        1     1     0     1     1     0   482    0
pffrnode    88        4    0        1     1     0     1     1     0     8    0
pffrent     40        5    0        2     1     0     1     1     0     8    0
pfosfp      40     1428    0     1005     5     0     5     5     0     8    0
pfosfpen   112     1428    0      714    21     0    21    21     0     8    0
pfrktable  1344       1    0        1     1     1     0     1     0     8    0
pfanchor   1288       5    0        0     1     0     1     1     0     8    0
pftag       88        1    0        1     1     1     0     1     0     8    0
pfstitem    24       50    0        0     1     0     1     1     0     8    0
pfstkey    128       54    0        4     2     0     2     2     0     8    0
pfstate    448       50    0        2     6     0     6     6     0     8    0
pfrule     1360      26    0       20     2     1     1     2     0     8    0
art_heap8  4096       1    0        0     1     0     1     1     0     8    0
art_heap4  256      504    0       89    29     1    28    29     0     8    0
art_table   40      505    0       89     5     0     5     5     0     8    0
art_node    32      126    0       35     1     0     1     1     0     8    0
sysvmsgpl   40        9    0        5     1     0     1     1     0     8    0
semupl     112        1    0        1     1     1     0     1     0     8    0
semapl      72       14    0        4     1     0     1     1     0     8    0
shmpl      112        9    0        2     1     0     1     1     0     8    0
dirhash    1024      23    0        6     3     0     3     3     0     8    0
dino2pl    256     2077    0      612    93     0    93    93     0     8    0
ffsino     296     2077    0      612   114     0   114   114     0     8    0
nchpl      144     2630    0      921    64     0    64    64     0     8    0
rtmask      32        3    0        3     1     1     0     1     0     8    0
vnodes     216     2326    0        0   130     0   130   130     0     8    0
namei      1024    8190    0     8190     3     2     1     2     0     8    1
percpumem   16       66    0       12     1     0     1     1     0     8    0
kstatmem   264       51    0       14     3     0     3     3     0     8    0
scsiplug    72        3    0        3     2     1     1     1     0     8    1
scxspl     216     9478    0     9476    11     3     8     8     1     8    7
plimitpl   152      100    0       83     1     0     1     1     0     8    0
sigapl     424      728    0      682     7     1     6     7     0     8    0
knotepl    120      427    0        0    13     0    13    13     0     8    0
kqueuepl   224      125    0      116     3     2     1     3     0     8    0
pipepl     344      217    0      190     3     0     3     3     0     8    0
fdescpl    528      712    0      682     3     0     3     3     0     8    0
filepl     160     3451    0     3234    14     3    11    14     0     8    0
lockfpl    104      130    0      128     1     0     1     1     0     8    0
lockfspl    48       60    0       58     1     0     1     1     0     8    0
sessionpl  144       34    0       25     1     0     1     1     0     8    0
pgrppl      48       48    0       31     1     0     1     1     0     8    0
ucredpl    104      416    0      403     1     0     1     1     0     8    0
zombiepl   144      729    0      728     1     0     1     1     0     8    0
processpl  1232     729    0      682     5     1     4     5     0     8    0
procpl     664     1195    0     1142     6     0     6     6     0     8    0
sockpl     752      697    0      667    12     7     5    11     0     8    1
mcl64k     65536      7    0        0     1     0     1     1     0     8    0
mcl16k     16384      4    0        0     1     0     1     1     0     8    0
mcl12k     12288      1    0        0     1     0     1     1     0     8    0
mcl9k128   9344       1    0        0     1     0     1     1     0     8    0
mcl8k      8192       2    0        0     1     0     1     1     0     8    0
mcl4k      4096     122    0        0    16     0    16    16     0     8    0
mcl2k      2048      21    0        0     3     0     3     3     0     8    0
mextrefs    64       21    0        0     1     0     1     1     0     8    0
mtagpl      96        2    0        0     1     0     1     1     0     8    0
mbufpl     256      145    0        0    10     0    10    10     0     8    0
bufpl      272     3276    0      105   212     0   212   212     0     8    0
anonpl      32     5522    0        0    45     0    45    45     0   247    0
amapchunkpl 152   16555    0    16118    26     1    25    25     0   158    1
amappl16   200     2225    0     2199     5     2     3     5     0     8    0
amappl15   192        5    0        5     2     2     0     1     0     8    0
amappl14   184      445    0      444     1     0     1     1     0     8    0
amappl13   176      139    0      126     1     0     1     1     0     8    0
amappl12   168      964    0      936     2     0     2     2     0     8    0
amappl11   160        3    0        3     1     1     0     1     0     8    0
amappl10   152       67    0       53     1     0     1     1     0     8    0
amappl9    144      272    0      272     1     1     0     1     0     8    0
amappl8    136      110    0      108     1     0     1     1     0     8    0
amappl7    128      160    0      147     1     0     1     1     0     8    0
amappl6    120      169    0      166     1     0     1     1     0     8    0
amappl5    112      100    0       90     1     0     1     1     0     8    0
amappl4    104      293    0      273     1     0     1     1     0     8    0
amappl3     96     3253    0     3148     4     0     4     4     0     8    0
amappl2     88      553    0      490     2     0     2     2     0     8    0
amappl1     80    11600    0    11006    15     1    14    15     0     8    0
amappl      88     4747    0     4600     5     0     5     5     0    92    0
uvmvnodes   80      111    0        0     3     0     3     3     0     8    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       11    0        2     1     0     1     1     0     8    0
uaddrrnd    24      711    0      682     1     0     1     1     0     8    0
uaddrbest   32        2    0        0     1     0     1     1     0     8    0
uaddr       24      711    0      682     1     0     1     1     0     8    0
vmmpekpl   168     8032    0     7990     3     0     3     3     0     8    0
vmmpepl    168    53436    0    51635    90     3    87    89     0   357    1
vmsppl     488      710    0      682     5     0     5     5     0     8    0
rwobjpl     80    17925    0    16893    24     1    23    24     0     8    0
pdppl      4096    1429    0     1364    99    28    71    85     0     8    6
pvpl        32    12485    0        0   101     0   101   101     0   265    0
pmappl     256      710    0      682     3     0     3     3     0     8    0
extentpl    40       46    0       28     1     0     1     1     0     8    0
phpool     112      488    0       35    13     0    13    13     0     8    0
ddb{1}> machine ddbcpu 0
Stopped at      x86_ipi_db+0x27:        addq    $0x8,%rsp
x86_ipi_db(ffffffff838dfff0) at x86_ipi_db+0x27 sys/arch/amd64/amd64/db_interface.c:394
x86_ipi_handler() at x86_ipi_handler+0xd9 sys/arch/amd64/amd64/ipi.c:106
Xresume_lapic_ipi() at Xresume_lapic_ipi+0x27
__mp_lock(ffffffff83a54c80) at __mp_lock+0x199 __mp_lock_spin sys/kern/kern_lock.c:142 [inline]
__mp_lock(ffffffff83a54c80) at __mp_lock+0x199 sys/kern/kern_lock.c:173
intr_handler(ffff80002a1f41f0,ffff8000002a2900) at intr_handler+0xe9 sys/arch/amd64/amd64/intr.c:560
Xintr_ioapic_edge23_untramp() at Xintr_ioapic_edge23_untramp+0x18f
__sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x2c kd_curproc sys/dev/kcov.c:584 [inline]
__sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x2c sys/dev/kcov.c:153
__mp_lock(ffffffff83a54c80) at __mp_lock+0x1a3 __mp_lock_spin sys/kern/kern_lock.c:142 [inline]
__mp_lock(ffffffff83a54c80) at __mp_lock+0x1a3 sys/kern/kern_lock.c:173
softintr_dispatch(0) at softintr_dispatch+0x125 sys/kern/kern_softintr.c:83
dosoftint(0) at dosoftint+0x54 sys/arch/amd64/amd64/intr.c:862
Xsoftclock() at Xsoftclock+0x27
__sanitizer_cov_trace_const_cmp4(ffffffff839008d8,ffffffff839008a0) at __sanitizer_cov_trace_const_cmp4+0x3f sys/dev/kcov.c:231
reaper(ffff800045ffd9f8) at reaper+0x15b sys/kern/kern_exit.c:479
end trace frame: 0x0, count: 2
ddb{0}> trace
x86_ipi_db(ffffffff838dfff0) at x86_ipi_db+0x27 sys/arch/amd64/amd64/db_interface.c:394
x86_ipi_handler() at x86_ipi_handler+0xd9 sys/arch/amd64/amd64/ipi.c:106
Xresume_lapic_ipi() at Xresume_lapic_ipi+0x27
__mp_lock(ffffffff83a54c80) at __mp_lock+0x199 __mp_lock_spin sys/kern/kern_lock.c:142 [inline]
__mp_lock(ffffffff83a54c80) at __mp_lock+0x199 sys/kern/kern_lock.c:173
intr_handler(ffff80002a1f41f0,ffff8000002a2900) at intr_handler+0xe9 sys/arch/amd64/amd64/intr.c:560
Xintr_ioapic_edge23_untramp() at Xintr_ioapic_edge23_untramp+0x18f
__sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x2c kd_curproc sys/dev/kcov.c:584 [inline]
__sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x2c sys/dev/kcov.c:153
__mp_lock(ffffffff83a54c80) at __mp_lock+0x1a3 __mp_lock_spin sys/kern/kern_lock.c:142 [inline]
__mp_lock(ffffffff83a54c80) at __mp_lock+0x1a3 sys/kern/kern_lock.c:173
softintr_dispatch(0) at softintr_dispatch+0x125 sys/kern/kern_softintr.c:83
dosoftint(0) at dosoftint+0x54 sys/arch/amd64/amd64/intr.c:862
Xsoftclock() at Xsoftclock+0x27
__sanitizer_cov_trace_const_cmp4(ffffffff839008d8,ffffffff839008a0) at __sanitizer_cov_trace_const_cmp4+0x3f sys/dev/kcov.c:231
reaper(ffff800045ffd9f8) at reaper+0x15b sys/kern/kern_exit.c:479
end trace frame: 0x0, count: -13
ddb{0}> machine ddbcpu 1
Stopped at      bpfioctl+0x1189:        movq    0x30(%rax),%rdi
bpfioctl(61700,20004269,ffff800034b91510,1,ffff800035799248) at bpfioctl+0x1189 sys/net/bpf.c:892
VOP_IOCTL(fffff4006cde63b8,20004269,ffff800034b91510,1,fffff400097fd618,ffff800035799248) at VOP_IOCTL+0xac sys/kern/vfs_vops.c:264
vn_ioctl(fffff40067ed47c8,20004269,ffff800034b91510,ffff800035799248) at vn_ioctl+0xf8 sys/kern/vfs_vnops.c:537
sys_ioctl(ffff800035799248,ffff800034b916f0,ffff800034b91640) at sys_ioctl+0x674 sys/kern/sys_generic.c:-1
syscall(ffff800034b916f0) at syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline]
syscall(ffff800034b916f0) at syscall+0xbd4 sys/arch/amd64/amd64/trap.c:783
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x8d321dda140, count: 9
ddb{1}> trace
bpfioctl(61700,20004269,ffff800034b91510,1,ffff800035799248) at bpfioctl+0x1189 sys/net/bpf.c:892
VOP_IOCTL(fffff4006cde63b8,20004269,ffff800034b91510,1,fffff400097fd618,ffff800035799248) at VOP_IOCTL+0xac sys/kern/vfs_vops.c:264
vn_ioctl(fffff40067ed47c8,20004269,ffff800034b91510,ffff800035799248) at vn_ioctl+0xf8 sys/kern/vfs_vnops.c:537
sys_ioctl(ffff800035799248,ffff800034b916f0,ffff800034b91640) at sys_ioctl+0x674 sys/kern/sys_generic.c:-1
syscall(ffff800034b916f0) at syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline]
syscall(ffff800034b916f0) at syscall+0xbd4 sys/arch/amd64/amd64/trap.c:783
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x8d321dda140, count: -6

Crashes (2):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2026/07/16 16:54 openbsd 3cb5d360b276 851bd571 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: bpfioctl
2026/06/24 02:48 openbsd 26c6eebc6662 042555ff .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: bpfioctl
* Struck through repros no longer work on HEAD.