uvm_fault: ip_freemoptions

Status: upstream: reported on 2026/08/01 11:53
Reported-by: syzbot+ec01acf6834775886975@syzkaller.appspotmail.com
First crash: 19d, last: 8d02h

Sample crash report:
uvm_fault(0xfffff0006d020d80, 0x7fff00007fff, 0, 1) -> e
kernel: page fault trap, code=0
Stopped at      ip_freemoptions+0x63:   movq    0xfffffffffffffff8(%rax,%r15,8),%rdi
    TID    PID    UID     PRFLAGS     PFLAGS  CPU  COMMAND
ip_freemoptions(ffff800000c439e0) at ip_freemoptions+0x63 sys/netinet/ip_output.c:1741
in_pcbdetach(fffff0006b397150) at in_pcbdetach+0xec sys/netinet/in_pcb.c:605
udp_detach(ffff80000163eee0) at udp_detach+0x5a sys/netinet/udp_usrreq.c:1158
soclose(ffff80000163eee0,0) at soclose+0xb0 pru_detach sys/sys/protosw.h:281 [inline]
soclose(ffff80000163eee0,0) at soclose+0xb0 sys/kern/uipc_socket.c:403
soo_close(fffff0006c7152c8,ffff800045fe6a80) at soo_close+0x56 sys/kern/sys_socket.c:-1
fdrop(fffff0006c7152c8,ffff800045fe6a80) at fdrop+0x121 sys/kern/kern_descrip.c:1281
closef(fffff0006c7152c8,ffff800045fe6a80) at closef+0x192 sys/kern/kern_descrip.c:1265
fdfree(ffff800045fe6a80) at fdfree+0x116 sys/kern/kern_descrip.c:1196
exit1(ffff800045fe6a80,0,0,1) at exit1+0x595 sys/kern/kern_exit.c:215
sys_exit(ffff800045fe6a80,ffff80003c40dc90,ffff80003c40dbe0) at sys_exit+0x1a sys/kern/kern_exit.c:-1
syscall(ffff80003c40dc90) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline]
syscall(ffff80003c40dc90) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:783
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7df45ea4a530, count: 3
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(0xfffff0006d020d80, 0x7fff00007fff, 0, 1) -> e
ddb{1}> show kasan
No such command
ddb{1}> trace
ip_freemoptions(ffff800000c439e0) at ip_freemoptions+0x63 sys/netinet/ip_output.c:1741
in_pcbdetach(fffff0006b397150) at in_pcbdetach+0xec sys/netinet/in_pcb.c:605
udp_detach(ffff80000163eee0) at udp_detach+0x5a sys/netinet/udp_usrreq.c:1158
soclose(ffff80000163eee0,0) at soclose+0xb0 pru_detach sys/sys/protosw.h:281 [inline]
soclose(ffff80000163eee0,0) at soclose+0xb0 sys/kern/uipc_socket.c:403
soo_close(fffff0006c7152c8,ffff800045fe6a80) at soo_close+0x56 sys/kern/sys_socket.c:-1
fdrop(fffff0006c7152c8,ffff800045fe6a80) at fdrop+0x121 sys/kern/kern_descrip.c:1281
closef(fffff0006c7152c8,ffff800045fe6a80) at closef+0x192 sys/kern/kern_descrip.c:1265
fdfree(ffff800045fe6a80) at fdfree+0x116 sys/kern/kern_descrip.c:1196
exit1(ffff800045fe6a80,0,0,1) at exit1+0x595 sys/kern/kern_exit.c:215
sys_exit(ffff800045fe6a80,ffff80003c40dc90,ffff80003c40dbe0) at sys_exit+0x1a sys/kern/kern_exit.c:-1
syscall(ffff80003c40dc90) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline]
syscall(ffff80003c40dc90) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:783
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7df45ea4a530, count: -12
ddb{1}> show registers
rdi                                0
rsi                           0x7fff    __ALIGN_SIZE+0x6fff
rbp               0xffff80003c40d8f0
rbx                              0x3
rdx                                0
rcx               0xffff800045fe6a80
rax                   0x7fff00007fff
r8                0xffffffffffffffff
r9                               0x1
r10                0xa75ad3615a7fc71
r11               0xda2038e7e4e6cf38
r12                                0
r13                                0
r14               0xffff800000c439e0
r15                              0x1
rip               0xffffffff812c0493    ip_freemoptions+0x63
cs                               0x8
rflags                       0x10206    __ALIGN_SIZE+0xf206
rsp               0xffff80003c40d8c0
ss                              0x10
ip_freemoptions+0x63:   movq    0xfffffffffffffff8(%rax,%r15,8),%rdi
ddb{1}> show proc
PROC (syz-executor) tid=159641 pid=60866 tcnt=0 stat=onproc
    flags process=1018<EXITING,SUGID,SINGLEEXIT> proc=2000<WEXIT>
    runpri=32, usrpri=86, slppri=32, nice=20
    wchan=0x0, wmesg=, ps_single=0xffff800045fe6a80 scnt=-1 ecnt=1
    forw=0xffffffffffffffff, list=0xffff800045fe7778,0xffff800045fe67f8
    process=0xffff80003a7cc020 user=0xffff80003c408000, vmspace=0xfffff0006d020d80
    estcpu=36, cpticks=8, pctcpu=0.0, user=0, sys=1, intr=0
ddb{1}> ps
   PID     TID   PPID   UID  S      PRLAGS     PFLAGS WAIT      COMMAND
 95911  141862   9257 32767  3        0x10       0x80 nanoslp   syz-executor
 95911  265620   9257 32767  3        0x10  0x4000080 fsleep    syz-executor
 95911  351198   9257 32767  3        0x10  0x4000080 fsleep    syz-executor
 87571   42836  94254 32767  2        0x10          0           syz-executor
 87571  467347  94254 32767  3        0x10  0x4000080 kqsel     syz-executor
 87571  269718  94254 32767  2        0x10  0x4000000           syz-executor
 32444   27616  36415 32767  3        0x10       0x80 nanoslp   syz-executor
 32444  199511  36415 32767  3        0x10  0x4000080 fsleep    syz-executor
 32444  305921  36415 32767  3        0x10  0x4000080 ttyout    syz-executor
 89919  216940  58756 32767  3        0x10       0x80 nanoslp   syz-executor
 89919   69681  58756 32767  3        0x10  0x4000080 fsleep    syz-executor
 89919  501387  58756 32767  3        0x10  0x4000080 fsleep    syz-executor
 89919   23698  58756 32767  3        0x10  0x4000080 ttyout    syz-executor
  9456  462338  20974 32767  3        0x10       0x80 nanoslp   syz-executor
  9456  242920  20974 32767  3        0x10  0x4000080 ttyretype syz-executor
 68013  386047   6319 32767  3        0x10       0x80 nanoslp   syz-executor
 79312  241513  82688 32767  3        0x10       0x80 nanoslp   syz-executor
  9257  284891  38871 32767  3        0x10       0x80 nanoslp   syz-executor
 51372  122050  58910 32767  3        0x10          0 biowait   syz-executor
 20974  389305  35285 32767  3        0x10       0x80 nanoslp   syz-executor
 58756  480594  64988 32767  3        0x10       0x80 nanoslp   syz-executor
 36415   60867  82983 32767  3        0x10       0x80 nanoslp   syz-executor
 94254  297112  55884 32767  3        0x10       0x80 nanoslp   syz-executor
  6319  145312  96223     0  3         0x2       0x80 wait      syz-executor
 38871  476197  96223     0  3         0x2       0x80 wait      syz-executor
 58910  371743  96223     0  3         0x2       0x80 wait      syz-executor
 82688   59245  96223     0  3         0x2       0x80 wait      syz-executor
 35285  112673  96223     0  3         0x2       0x80 wait      syz-executor
 64988  316868  96223     0  3         0x2       0x80 wait      syz-executor
 55884  185543  96223     0  3         0x2       0x80 wait      syz-executor
 82983  475674  96223     0  3         0x2       0x80 wait      syz-executor
 96223   65893  31406     0  3         0x2       0x80 kqread    syz-executor
 31406  108000  91529     0  3    0x100002       0x88 sigsusp   ksh
 91529  279580   3608     0  3        0x10       0x88 kqread    sshd-session
  3608  243290  90747     0  3        0x12       0x80 kqread    sshd-session
 28532  138697      1     0  3    0x100003       0x80 ttyin     getty
 90747  444008      1     0  3           0       0x88 kqread    sshd
 30509  218547  77126    73  3   0x1100010       0x80 kqread    syslogd
 77126    2155      1     0  3    0x100002       0x80 sbwait    syslogd
  6049  281264      1     0  3    0x100000       0x80 kqread    resolvd
 28425  293827  36627    77  3    0x100012       0x80 kqread    dhcpleased
 50588   37463  36627    77  3    0x100012       0x80 kqread    dhcpleased
 36627  284747      1     0  3           0       0x80 kqread    dhcpleased
 38135  358670      0     0  3     0x14000      0x200 bored     smr
 36630  445720      0     0  2     0x14000      0x200           zerothread
 80449  438429      0     0  3     0x14000      0x200 aiodoned  aiodoned
 72960   10807      0     0  3     0x14000      0x200 syncer    update
 19815   86261      0     0  3     0x14000      0x200 cleaner   cleaner
 78236  505401      0     0  3     0x14000      0x200 reaper    reaper
 20182  167923      0     0  3     0x14000      0x200 pgdaemon  pagedaemon
 82829  359359      0     0  3     0x14000      0x200 bored     viomb
 95285  214670      0     0  3     0x14000 0x40000200 acpi0     acpi0
 72802  217079      0     0  3     0x14000 0x40000200           idle1
 97578   44328      0     0  3     0x14000      0x200 bored     softnet1
 57130  113301      0     0  3     0x14000      0x200 bored     softnet0
 23735  200223      0     0  3     0x14000      0x200 bored     systqmp
 85353  136294      0     0  3     0x14000      0x200 bored     systq
 53235  384622      0     0  3     0x14000      0x200 tmoslp    softclockmp
 90009  473374      0     0  3     0x14000 0x40000200 tmoslp    softclock
 76813  137894      0     0  7     0x14000 0x40000200           idle0
     1  448617      0     0  3         0x2       0x80 wait      init
     0       0     -1     0  3     0x10000      0x200 scheduler swapper
ddb{1}> show all locks
Process 51372 (syz-executor) thread 0xffff800045fe7ca8 (122050)
exclusive rrwlock inode r = 0 (0xfffff0006c0178d8)
#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  ufs_ihashins+0x4f ufs_ihash sys/ufs/ufs/ufs_ihash.c:-1 [inline]
#4  ufs_ihashins+0x4f sys/ufs/ufs/ufs_ihash.c:150
#5  ffs_vget+0x187 sys/ufs/ffs/ffs_vfsops.c:1232
#6  ffs_inode_alloc+0x279 sys/ufs/ffs/ffs_alloc.c:393
#7  ufs_mkdir+0xfc sys/ufs/ufs/ufs_vnops.c:1112
#8  VOP_MKDIR+0x101 sys/kern/vfs_vops.c:394
#9  domkdirat+0x179 sys/kern/vfs_syscalls.c:3063
#10 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline]
#10 syscall+0xb17 sys/arch/amd64/amd64/trap.c:783
#11 Xsyscall+0x128
exclusive rrwlock inode r = 0 (0xfffff0006d3c4e98)
#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  domkdirat+0x8b sys/kern/vfs_syscalls.c:3048
#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
ddb{1}> show malloc
           Type InUse  MemUse  HighUse   Limit  Requests Type Lim
         devbuf 11054  12019K   12034K 166960K     12145        0
            pcb    17     12K      12K 166960K        17        0
         rtable   243      6K       7K 166960K       358        0
             pf    31     16K      16K 166960K        31        0
         ifaddr    42      7K       7K 166960K        44        0
        ifgroup    50      2K       2K 166960K        50        0
         sysctl     1      1K       9K 166960K         5        0
       counters    70     37K      37K 166960K        70        0
       ioctlops     0      0K       2K 166960K        32        0
            iov     0      0K       4K 166960K         5        0
          mount     1      1K       1K 166960K         1        0
            log     0      0K       0K 166960K         4        0
         vnodes  1287     81K      81K 166960K      1359        0
      UFS quota     1     32K      32K 166960K         1        0
      UFS mount     5     36K      36K 166960K         5        0
            shm     2      1K       5K 166960K         4        0
         VM map     2      1K       1K 166960K         2        0
            sem     7      0K       0K 166960K         7        0
        dirhash    12      2K       2K 166960K        12        0
           ACPI  1734    201K     291K 166960K     11964        0
      file desc    25     93K     125K 166960K       260        0
           proc    58     99K     147K 166960K       529        0
        subproc    72      4K       4K 166960K        72        0
    NFS srvsock     1      0K       0K 166960K         1        0
     NFS daemon     1     16K      16K 166960K         1        0
    ip_moptions     2      0K       0K 166960K        18        0
       in_multi   100      6K       6K 166960K       100        0
    ether_multi     1      0K       0K 166960K         1        0
            mrt     0      0K       0K 166960K         5        0
    ISOFS mount     1     32K      32K 166960K         1        0
  MSDOSFS mount     1     16K      16K 166960K         1        0
           ttys    85    387K     387K 166960K        85        0
           exec     0      0K       1K 166960K       367        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   251    136K     150K 166960K      3991        0
       UVM aobj     9      2K       2K 166960K         9        0
     pinsyscall    46     92K     111K 166960K      1330        0
        memdesc     1      4K       4K 166960K         1        0
    crypto data     1      1K       1K 166960K         1        0
    ip6_options     0      0K       0K 166960K         7        0
            NDP    11      0K       2K 166960K        27        0
           temp    43   9116K    9124K 166960K      3960        0
         kqueue    13     20K      27K 166960K        40        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       39    0       36     1     0     1     1     0     8    0
rtentry    176      115    0        2     6     0     6     6     0     8    0
unpcb      144      105    0       90     1     0     1     1     0     8    0
syncache   336        8    0        8     1     0     1     1     0     8    1
tcpcb      736       57    0       53     1     0     1     1     0     8    0
arp        136       18    0        0     1     0     1     1     0     8    0
ipq         40        1    0        0     1     0     1     1     0     8    0
ipqe        40        2    0        0     1     0     1     1     0     8    0
inpcb      328      191    0      180     4     0     4     4     0     8    2
nd6        152       28    0        1     2     0     2     2     0     8    0
kcovpl      48        8    0        0     1     0     1     1     0     8    0
art_heap8  4096       1    0        0     1     0     1     1     0     8    0
art_heap4  256      487    0       15    31     0    31    31     0     8    0
art_table   40      488    0       15     5     0     5     5     0     8    0
art_node    32      115    0       12     1     0     1     1     0     8    0
sysvmsgpl   40        6    0        2     1     0     1     1     0     8    0
semapl      72        5    0        0     1     0     1     1     0     8    0
shmpl      112        6    0        0     1     0     1     1     0     8    0
dirhash    1024      17    0        0     3     0     3     3     0     8    0
dino2pl    256     1738    0      273    93     0    93    93     0     8    0
ffsino     296     1738    0      273   114     0   114   114     0     8    0
nchpl      144     2101    0      406    63     0    63    63     0     8    0
vnodes     216     1819    0        0   102     0   102   102     0     8    0
namei      1024    6531    0     6530     2     0     2     2     0     8    1
percpumem   16       51    0        0     1     0     1     1     0     8    0
kstatmem   264       25    0        0     2     0     2     2     0     8    0
scxspl     216     7112    0     7111     3     2     1     2     1     8    0
plimitpl   152      121    0       93     2     0     2     2     0     8    0
sigapl     424      549    0      496     7     0     7     7     0     8    0
knotepl    120       91    0        0     3     0     3     3     0     8    0
kqueuepl   224       51    0       41     1     0     1     1     0     8    0
pipepl     344      129    0      102     3     0     3     3     0     8    0
fdescpl    528      533    0      496     4     0     4     4     0     8    0
filepl     160     2251    0     2028    11     0    11    11     0     8    1
lockfpl    104       40    0       37     1     0     1     1     0     8    0
lockfspl    48       19    0       16     1     0     1     1     0     8    0
sessionpl  144       27    0       11     1     0     1     1     0     8    0
pgrppl      48       36    0       12     1     0     1     1     0     8    0
ucredpl    104      317    0      298     1     0     1     1     0     8    0
zombiepl   144      498    0      496     1     0     1     1     0     8    0
processpl  1232     549    0      496     5     0     5     5     0     8    0
procpl     664      776    0      713     7     0     7     7     0     8    1
sosppl     176        4    0        4     1     0     1     1     0     8    1
sockpl     752      335    0      306     7     0     7     7     0     8    2
mcl64k     65536      2    0        0     1     0     1     1     0     8    0
mcl8k      8192       2    0        0     1     0     1     1     0     8    0
mcl4k      4096     115    0        0    15     0    15    15     0     8    0
mcl2k      2048      17    0        0     3     0     3     3     0     8    0
mextrefs    64       14    0        0     1     0     1     1     0     8    0
mtagpl      96        3    0        0     1     0     1     1     0     8    0
mbufpl     256      305    0        0    20     0    20    20     0     8    0
bufpl      272     2437    0      102   156     0   156   156     0     8    0
anonpl      32     5003    0        0    41     0    41    41     0   247    0
amapchunkpl 152   12239    0    11647    32     0    32    32     0   158    7
amappl16   200     1726    0     1703     6     3     3     5     0     8    0
amappl15   192        3    0        3     1     1     0     1     0     8    0
amappl14   184      404    0      402     1     0     1     1     0     8    0
amappl13   176      116    0      105     1     0     1     1     0     8    0
amappl12   168      766    0      729     2     0     2     2     0     8    0
amappl11   160        4    0        4     1     1     0     1     0     8    0
amappl10   152       64    0       54     1     0     1     1     0     8    0
amappl9    144      274    0      274     1     1     0     1     0     8    0
amappl8    136       90    0       89     1     0     1     1     0     8    0
amappl7    128      137    0      126     1     0     1     1     0     8    0
amappl6    120      150    0      148     1     0     1     1     0     8    0
amappl5    112       89    0       82     1     0     1     1     0     8    0
amappl4    104      276    0      259     1     0     1     1     0     8    0
amappl3     96     2091    0     1980     4     1     3     3     0     8    0
amappl2     88      639    0      562     2     0     2     2     0     8    0
amappl1     80    10509    0     9928    14     0    14    14     0     8    0
amappl      88     3304    0     3114     5     0     5     5     0    92    0
uvmvnodes   80      103    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        8    0        0     1     0     1     1     0     8    0
uaddrrnd    24      533    0      496     1     0     1     1     0     8    0
uaddrbest   32        2    0        0     1     0     1     1     0     8    0
uaddr       24      533    0      496     1     0     1     1     0     8    0
vmmpekpl   168     6195    0     6163     2     0     2     2     0     8    0
vmmpepl    168    42508    0    40431    94     0    94    94     0   357    0
vmsppl     488      532    0      496     7     1     6     6     0     8    0
rwobjpl     80    15150    0    14172    22     0    22    22     0     8    1
pdppl      4096    1073    0      992   109    26    83    97     0     8    2
pvpl        32    11205    0        0    92     1    91    91     0   265    0
pmappl     256      532    0      496     4     1     3     3     0     8    0
extentpl    40       46    0       28     1     0     1     1     0     8    0
phpool     112      444    0       29    12     0    12    12     0     8    0
ddb{1}> machine ddbcpu 0
Stopped at      x86_ipi_db+0x27:        addq    $0x8,%rsp
x86_ipi_db(ffffffff83988ff0) 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(ffffffff83ab95c0) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:142 [inline]
__mp_lock(ffffffff83ab95c0) at __mp_lock+0x192 sys/kern/kern_lock.c:173
intr_handler(ffff80002a1b27f0,ffff8000002a2900) at intr_handler+0xe9 sys/arch/amd64/amd64/intr.c:560
Xintr_ioapic_edge23_untramp() at Xintr_ioapic_edge23_untramp+0x18f
acpicpu_idle() at acpicpu_idle+0x457 sys/dev/acpi/acpicpu_x86.c:1224
sched_idle(ffffffff83988ff0) at sched_idle+0x371 sys/kern/kern_sched.c:192
end trace frame: 0x0, count: 7
ddb{0}> trace
x86_ipi_db(ffffffff83988ff0) 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(ffffffff83ab95c0) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:142 [inline]
__mp_lock(ffffffff83ab95c0) at __mp_lock+0x192 sys/kern/kern_lock.c:173
intr_handler(ffff80002a1b27f0,ffff8000002a2900) at intr_handler+0xe9 sys/arch/amd64/amd64/intr.c:560
Xintr_ioapic_edge23_untramp() at Xintr_ioapic_edge23_untramp+0x18f
acpicpu_idle() at acpicpu_idle+0x457 sys/dev/acpi/acpicpu_x86.c:1224
sched_idle(ffffffff83988ff0) at sched_idle+0x371 sys/kern/kern_sched.c:192
end trace frame: 0x0, count: -8
ddb{0}> machine ddbcpu 1
Stopped at      ip_freemoptions+0x63:   movq    0xfffffffffffffff8(%rax,%r15,8),%rdi
ip_freemoptions(ffff800000c439e0) at ip_freemoptions+0x63 sys/netinet/ip_output.c:1741
in_pcbdetach(fffff0006b397150) at in_pcbdetach+0xec sys/netinet/in_pcb.c:605
udp_detach(ffff80000163eee0) at udp_detach+0x5a sys/netinet/udp_usrreq.c:1158
soclose(ffff80000163eee0,0) at soclose+0xb0 pru_detach sys/sys/protosw.h:281 [inline]
soclose(ffff80000163eee0,0) at soclose+0xb0 sys/kern/uipc_socket.c:403
soo_close(fffff0006c7152c8,ffff800045fe6a80) at soo_close+0x56 sys/kern/sys_socket.c:-1
fdrop(fffff0006c7152c8,ffff800045fe6a80) at fdrop+0x121 sys/kern/kern_descrip.c:1281
closef(fffff0006c7152c8,ffff800045fe6a80) at closef+0x192 sys/kern/kern_descrip.c:1265
fdfree(ffff800045fe6a80) at fdfree+0x116 sys/kern/kern_descrip.c:1196
exit1(ffff800045fe6a80,0,0,1) at exit1+0x595 sys/kern/kern_exit.c:215
sys_exit(ffff800045fe6a80,ffff80003c40dc90,ffff80003c40dbe0) at sys_exit+0x1a sys/kern/kern_exit.c:-1
syscall(ffff80003c40dc90) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline]
syscall(ffff80003c40dc90) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:783
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7df45ea4a530, count: 3
ddb{1}> trace
ip_freemoptions(ffff800000c439e0) at ip_freemoptions+0x63 sys/netinet/ip_output.c:1741
in_pcbdetach(fffff0006b397150) at in_pcbdetach+0xec sys/netinet/in_pcb.c:605
udp_detach(ffff80000163eee0) at udp_detach+0x5a sys/netinet/udp_usrreq.c:1158
soclose(ffff80000163eee0,0) at soclose+0xb0 pru_detach sys/sys/protosw.h:281 [inline]
soclose(ffff80000163eee0,0) at soclose+0xb0 sys/kern/uipc_socket.c:403
soo_close(fffff0006c7152c8,ffff800045fe6a80) at soo_close+0x56 sys/kern/sys_socket.c:-1
fdrop(fffff0006c7152c8,ffff800045fe6a80) at fdrop+0x121 sys/kern/kern_descrip.c:1281
closef(fffff0006c7152c8,ffff800045fe6a80) at closef+0x192 sys/kern/kern_descrip.c:1265
fdfree(ffff800045fe6a80) at fdfree+0x116 sys/kern/kern_descrip.c:1196
exit1(ffff800045fe6a80,0,0,1) at exit1+0x595 sys/kern/kern_exit.c:215
sys_exit(ffff800045fe6a80,ffff80003c40dc90,ffff80003c40dbe0) at sys_exit+0x1a sys/kern/kern_exit.c:-1
syscall(ffff80003c40dc90) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline]
syscall(ffff80003c40dc90) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:783
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7df45ea4a530, count: -12

Crashes (2):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2026/08/12 19:43 openbsd 2610791609b5 ee03bfea .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-setuid uvm_fault: ip_freemoptions
2026/08/01 11:53 openbsd 59ec3ab4d107 e611ffe1 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-setuid uvm_fault: ip_freemoptions
* Struck through repros no longer work on HEAD.