uvm_fault: pfi_xcommit

Status: upstream: reported on 2026/09/12 21:22
Reported-by: syzbot+9357b163ecffe57a2bf2@syzkaller.appspotmail.com
First crash: 6d11h, last: 6d11h

Sample crash report:
uvm_fault(0xffffef006d1a73f0, 0x18, 0, 1) -> e
kernel: page fault trap, code=0
Stopped at      pfi_xcommit+0x133:      movq    0x18(%rax),%rax
    TID    PID    UID     PRFLAGS     PFLAGS  CPU  COMMAND
 374230   9446  32767        0x10          0    0  syz-executor
pfi_xcommit() at pfi_xcommit+0x133 sys/net/pf_if.c:942
pfi_group_delmember(ffff8000002d8100) at pfi_group_delmember+0x63 sys/net/pf_if.c:402
if_delgroup(ffff8000015fa000,ffff8000002d8100) at if_delgroup+0x186 sys/net/if.c:3150
if_detach(ffff8000015fa000) at if_detach+0x34b sys/net/if.c:1317
tun_clone_destroy(ffff8000015fa000) at tun_clone_destroy+0x2ce sys/net/if_tun.c:343
if_clone_destroy(ffff800038f964f0) at if_clone_destroy+0x205 sys/net/if.c:1479
tun_dev_close(5d03,7) at tun_dev_close+0x1d9 sys/net/if_tun.c:526
spec_close(ffff800038f965b0) at spec_close+0x417 sys/kern/spec_vnops.c:-1
VOP_CLOSE(ffffef006e332388,7,ffffef00097fd680,ffff80002a22a018) at VOP_CLOSE+0x132 sys/kern/vfs_vops.c:156
vn_closefile(ffffef0060b82c20,ffff80002a22a018) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:298 [inline]
vn_closefile(ffffef0060b82c20,ffff80002a22a018) at vn_closefile+0x12b sys/kern/vfs_vnops.c:621
fdrop(ffffef0060b82c20,ffff80002a22a018) at fdrop+0x121 sys/kern/kern_descrip.c:1281
closef(ffffef0060b82c20,ffff80002a22a018) at closef+0x192 sys/kern/kern_descrip.c:1265
fdfree(ffff80002a22a018) at fdfree+0x116 sys/kern/kern_descrip.c:1196
exit1(ffff80002a22a018,43,0,1) at exit1+0x595 sys/kern/kern_exit.c:215
end trace frame: 0xffff800038f96840, count: 0
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(0xffffef006d1a73f0, 0x18, 0, 1) -> e
ddb{1}> show kasan
No such command
ddb{1}> trace
pfi_xcommit() at pfi_xcommit+0x133 sys/net/pf_if.c:942
pfi_group_delmember(ffff8000002d8100) at pfi_group_delmember+0x63 sys/net/pf_if.c:402
if_delgroup(ffff8000015fa000,ffff8000002d8100) at if_delgroup+0x186 sys/net/if.c:3150
if_detach(ffff8000015fa000) at if_detach+0x34b sys/net/if.c:1317
tun_clone_destroy(ffff8000015fa000) at tun_clone_destroy+0x2ce sys/net/if_tun.c:343
if_clone_destroy(ffff800038f964f0) at if_clone_destroy+0x205 sys/net/if.c:1479
tun_dev_close(5d03,7) at tun_dev_close+0x1d9 sys/net/if_tun.c:526
spec_close(ffff800038f965b0) at spec_close+0x417 sys/kern/spec_vnops.c:-1
VOP_CLOSE(ffffef006e332388,7,ffffef00097fd680,ffff80002a22a018) at VOP_CLOSE+0x132 sys/kern/vfs_vops.c:156
vn_closefile(ffffef0060b82c20,ffff80002a22a018) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:298 [inline]
vn_closefile(ffffef0060b82c20,ffff80002a22a018) at vn_closefile+0x12b sys/kern/vfs_vnops.c:621
fdrop(ffffef0060b82c20,ffff80002a22a018) at fdrop+0x121 sys/kern/kern_descrip.c:1281
closef(ffffef0060b82c20,ffff80002a22a018) at closef+0x192 sys/kern/kern_descrip.c:1265
fdfree(ffff80002a22a018) at fdfree+0x116 sys/kern/kern_descrip.c:1196
exit1(ffff80002a22a018,43,0,1) at exit1+0x595 sys/kern/kern_exit.c:215
sys_exit(ffff80002a22a018,ffff800038f96920,ffff800038f96870) at sys_exit+0x1a sys/kern/kern_exit.c:-1
syscall(ffff800038f96920) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline]
syscall(ffff800038f96920) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:791
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7be51fee73b0, count: -17
ddb{1}> show registers
rdi               0xffff8000015a8000
rsi                              0x1
rbp               0xffff800038f96360
rbx               0xffff8000002d8130
rdx                              0x4
rcx               0xffffffffc88f9e8b
rax                                0
r8                 0x101010101010101
r9                0x8080808080808080
r10               0x476a8715fe6d41f4
r11               0x81b999e0c545b6c9
r12               0xffff8000015fa000
r13               0xffff8000015971e0
r14               0xffff8000015a8000
r15               0xffff800001597ee0
rip               0xffffffff82c5ab33    pfi_xcommit+0x133
cs                               0x8
rflags                       0x10282    __ALIGN_SIZE+0xf282
rsp               0xffff800038f96340
ss                                 0
pfi_xcommit+0x133:      movq    0x18(%rax),%rax
ddb{1}> show proc
PROC (syz-executor) tid=11494 pid=39874 tcnt=0 stat=onproc
    flags process=8<EXITING> proc=2000<WEXIT>
    runpri=32, usrpri=61, slppri=32, nice=20
    wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=1
    forw=0xffffffffffffffff, list=0xffff80002a22a2b0,0xffff80002a22aa88
    process=0xffff800045fee698 user=0xffff800038f91000, vmspace=0xffffef006d1a73f0
    estcpu=11, cpticks=2, pctcpu=0.1, user=0, sys=1, intr=0
ddb{1}> ps
   PID     TID   PPID   UID  S      PRLAGS     PFLAGS WAIT      COMMAND
 95654  201686  31747 32767  2        0x10          0           syz-executor
 36062  384484  43620 32767  2        0x10          0           syz-executor
 36062  117834  43620 32767  3        0x10  0x4000080 fsleep    syz-executor
  9446  374230  45657 32767  7        0x10          0           syz-executor
  9446  299118  45657 32767  3        0x10  0x4000080 fsleep    syz-executor
 76125  464729  24663 32767  2        0x11          0           syz-executor
 76125  491669  24663 32767  3        0x11  0x4000000 biowait   syz-executor
 31747  105816  93746 32767  3        0x10       0x80 nanoslp   syz-executor
  5727  390136  57712 32767  3        0x10          0 biowait   syz-executor
 24663  132445  84761 32767  3        0x10       0x80 nanoslp   syz-executor
 43620  291008  32183 32767  3        0x10       0x80 nanoslp   syz-executor
 45657   55740  75396 32767  3        0x10       0x80 nanoslp   syz-executor
 81290  250265    797     0  3         0x2       0x80 wait      syz-executor
 54102  234600    797     0  3         0x2       0x80 wait      syz-executor
 84761  397019    797     0  3         0x2       0x80 wait      syz-executor
 57712  264583    797     0  3         0x2       0x80 wait      syz-executor
 84504  372331    797     0  3         0x2       0x80 wait      syz-executor
 93746  523167    797     0  3         0x2       0x80 wait      syz-executor
 32183  482131    797     0  3         0x2       0x80 wait      syz-executor
 75396  466688    797     0  3         0x2       0x80 wait      syz-executor
   797  402238  38497     0  3         0x2       0x80 kqread    syz-executor
 38497  279212   6554     0  3    0x100002       0x88 sigsusp   ksh
  6554  195440  21218     0  3        0x10       0x88 kqread    sshd-session
 21218  504982  25390     0  3        0x12       0x80 kqread    sshd-session
 91824   71631      1     0  3    0x100003       0x80 ttyin     getty
 25390   48510      1     0  3           0       0x88 kqread    sshd
 18086  364022  50161    73  3   0x1100010       0x80 kqread    syslogd
 50161  298495      1     0  3    0x100002       0x80 sbwait    syslogd
 49525   68365      1     0  3    0x100000       0x80 kqread    resolvd
 30028  218220  51921    77  3    0x100012       0x80 kqread    dhcpleased
 74692  201199  51921    77  3    0x100012       0x80 kqread    dhcpleased
 51921  403872      1     0  3           0       0x80 kqread    dhcpleased
 13654  328673      0     0  3     0x14000      0x200 bored     smr
 65818  515807      0     0  2     0x14000      0x200           zerothread
 39031   48898      0     0  3     0x14000      0x200 aiodoned  aiodoned
 21740  427649      0     0  3     0x14000      0x200 syncer    update
 85468    3940      0     0  3     0x14000      0x200 cleaner   cleaner
 16086  179726      0     0  3     0x14000      0x200 reaper    reaper
 33454   48507      0     0  3     0x14000      0x200 pgdaemon  pagedaemon
 30357  520056      0     0  3     0x14000      0x200 bored     viomb
 94687  333594      0     0  3     0x14000 0x40000200 acpi0     acpi0
 95438  343136      0     0  3     0x14000 0x40000200           idle1
 55196  317424      0     0  3     0x14000      0x200 bored     softnet1
 12275  476878      0     0  2     0x14000      0x200           softnet0
 14121  376144      0     0  3     0x14000      0x200 smrbar    systqmp
 93160  158042      0     0  3     0x14000      0x200 bored     systq
  8735  172611      0     0  3     0x14000      0x200 tmoslp    softclockmp
 21432  409145      0     0  3     0x14000 0x40000200 tmoslp    softclock
 25312  334299      0     0  3     0x14000 0x40000200           idle0
     1  294661      0     0  3         0x2       0x80 wait      init
     0       0     -1     0  3     0x10000      0x200 scheduler swapper
ddb{1}> show all locks
Process 76125 (syz-executor) thread 0xffff80003b7e2a88 (491669)
exclusive rrwlock inode r = 0 (0xffffef0060b20688)
#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  ufs_rename+0x214 sys/ufs/ufs/ufs_vnops.c:768
#6  VOP_RENAME+0x137 sys/kern/vfs_vops.c:376
#7  dorenameat+0x3f7 sys/kern/vfs_syscalls.c:2984
#8  syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline]
#8  syscall+0xb17 sys/arch/amd64/amd64/trap.c:791
#9  Xsyscall+0x128
exclusive rrwlock inode r = 0 (0xffffef0060b20d78)
#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  dorenameat+0x144 sys/kern/vfs_syscalls.c:2954
#8  syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline]
#8  syscall+0xb17 sys/arch/amd64/amd64/trap.c:791
#9  Xsyscall+0x128
Process 5727 (syz-executor) thread 0xffff80002a22aa78 (390136)
exclusive rrwlock inode r = 0 (0xffffef0060b20310)
#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:791
#11 Xsyscall+0x128
exclusive rrwlock inode r = 0 (0xffffef006dc988c8)
#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:791
#9  Xsyscall+0x128
Process 14121 (systqmp) thread 0xffff800045ffe530 (376144)
shared rwlock systqmp r = 0 (0xffffffff8392a628)
#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
ddb{1}> show malloc
           Type InUse  MemUse  HighUse   Limit  Requests Type Lim
         devbuf 11044  12017K   12034K 166960K     12136        0
            pcb    17     12K      12K 166960K        17        0
         rtable   215      6K       6K 166960K       329        0
             pf    29     16K      16K 166960K        31        0
         ifaddr    39      6K       7K 166960K        42        0
        ifgroup    49      2K       2K 166960K        50        0
         sysctl     1      1K       9K 166960K         5        0
       counters    70     37K      37K 166960K        70        0
       ioctlops     0      0K       2K 166960K        31        0
          mount     1      1K       1K 166960K         1        0
            log     0      0K       0K 166960K         4        0
         vnodes  1287     81K      81K 166960K      1352        0
      UFS quota     1     32K      32K 166960K         1        0
      UFS mount     5     36K      36K 166960K         5        0
            shm     2      1K       1K 166960K         2        0
         VM map     2      1K       1K 166960K         2        0
            sem     5      0K       0K 166960K         6        0
        dirhash    12      2K       2K 166960K        12        0
           ACPI  1734    201K     291K 166960K     11964        0
      file desc    22     81K     129K 166960K       144        0
          sigio     0      0K       0K 166960K         2        0
           proc    58     99K     147K 166960K       489        0
        subproc    72      4K       4K 166960K        72        0
    NFS srvsock     1      0K       0K 166960K         1        0
     NFS daemon     1     16K      16K 166960K         1        0
       in_multi    88      5K       6K 166960K        89        0
    ether_multi     1      0K       0K 166960K         1        0
            mrt     0      0K       0K 166960K         1        0
    ISOFS mount     1     32K      32K 166960K         1        0
  MSDOSFS mount     1     16K      16K 166960K         1        0
           ttys    31    148K     148K 166960K        31        0
           exec     0      0K       1K 166960K       352        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   209    158K     167K 166960K      2879        0
       UVM aobj     3      2K       2K 166960K         3        0
     pinsyscall    43     86K     112K 166960K      1205        0
        memdesc     1      4K       4K 166960K         1        0
    crypto data     1      1K       1K 166960K         1        0
    ip6_options     0      0K       0K 166960K         1        0
            NDP    25      1K       1K 166960K        25        0
           temp    34   9114K    9120K 166960K      3623        0
         kqueue    13     20K      26K 166960K        28        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       32    0       29     1     0     1     1     0     8    0
rtentry    176      104    0        5     5     0     5     5     0     8    0
unpcb      144       45    0       30     1     0     1     1     0     8    0
syncache   336        4    0        4     1     0     1     1     0     8    1
tcpcb      736        9    0        5     1     0     1     1     0     8    0
arp        136       18    0        2     1     0     1     1     0     8    0
inpcb      328       59    0       52     1     0     1     1     0     8    0
nd6        152       21    0        0     1     0     1     1     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      412    0        0    26     0    26    26     0     8    0
art_table   40      413    0        0     5     0     5     5     0     8    0
art_node    32      104    0        8     1     0     1     1     0     8    0
semapl      72        4    0        1     1     0     1     1     0     8    0
dirhash    1024      17    0        0     3     0     3     3     0     8    0
dino2pl    256     1561    0       95    92     0    92    92     0     8    0
ffsino     296     1561    0       95   113     0   113   113     0     8    0
nchpl      144     1754    0       61    63     0    63    63     0     8    0
vnodes     216     1642    0        0    92     0    92    92     0     8    0
namei      1024    5765    0     5762     4     1     3     3     0     8    2
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     6102    0     6100     4     2     2     3     1     8    1
plimitpl   152       37    0       12     1     0     1     1     0     8    0
sigapl     424      433    0      383     7     0     7     7     0     8    1
knotepl    120      556    0        0    17     0    17    17     0     8    0
kqueuepl   224       24    0       15     1     0     1     1     0     8    0
pipepl     344      124    0       97     3     0     3     3     0     8    0
fdescpl    528      417    0      383     4     0     4     4     0     8    0
filepl     160     1436    0     1228     9     0     9     9     0     8    0
lockfpl    104        7    0        4     1     0     1     1     0     8    0
lockfspl    48        5    0        2     1     0     1     1     0     8    0
sessionpl  144       24    0        7     1     0     1     1     0     8    0
pgrppl      48       32    0        7     1     0     1     1     0     8    0
ucredpl    104      101    0       83     1     0     1     1     0     8    0
zombiepl   144      386    0      383     1     0     1     1     0     8    0
processpl  1232     433    0      383     5     0     5     5     0     8    0
procpl     664      450    0      397     6     0     6     6     0     8    0
sockpl     752      138    0      113     4     0     4     4     0     8    1
mcl8k      8192       2    0        0     1     0     1     1     0     8    0
mcl4k      4096     119    0        0    15     0    15    15     0     8    0
mcl2k      2048      14    0        0     2     0     2     2     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      136    0        0     9     0     9     9     0     8    0
bufpl      272     2223    0      102   142     0   142   142     0     8    0
anonpl      32     3343    0        0    27     0    27    27     0   247    0
amapchunkpl 152    7663    0     7223    18     0    18    18     0   158    1
amappl16   200     1162    0     1150     4     0     4     4     0     8    3
amappl15   192       54    0       54     1     0     1     1     0     8    1
amappl14   184      443    0      442     1     0     1     1     0     8    0
amappl13   176      110    0      100     1     0     1     1     0     8    0
amappl12   168      644    0      612     2     0     2     2     0     8    0
amappl11   160        5    0        4     1     0     1     1     0     8    0
amappl10   152       60    0       50     1     0     1     1     0     8    0
amappl9    144      269    0      269     1     0     1     1     0     8    1
amappl8    136      111    0      110     1     0     1     1     0     8    0
amappl7    128      144    0      132     1     0     1     1     0     8    0
amappl6    120      147    0      146     1     0     1     1     0     8    0
amappl5    112      104    0       97     1     0     1     1     0     8    0
amappl4    104      254    0      238     1     0     1     1     0     8    0
amappl3     96     1457    0     1376     4     1     3     3     0     8    0
amappl2     88      523    0      449     2     0     2     2     0     8    0
amappl1     80    10027    0     9466    14     0    14    14     0     8    0
amappl      88     2223    0     2076     4     0     4     4     0    92    0
uvmvnodes   80       95    0        0     2     0     2     2     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        2    0        0     1     0     1     1     0     8    0
uaddrrnd    24      417    0      383     1     0     1     1     0     8    0
uaddrbest   32        2    0        0     1     0     1     1     0     8    0
uaddr       24      417    0      383     1     0     1     1     0     8    0
vmmpekpl   168     5330    0     5297     2     0     2     2     0     8    0
vmmpepl    168    35759    0    33896    92     0    92    92     0   357    6
vmsppl     488      416    0      383     7     1     6     6     0     8    0
rwobjpl     80    13309    0    12418    22     0    22    22     0     8    1
pdppl      4096     841    0      766   109    10    99    99     0     8   24
pvpl        32     8787    0        0    71     0    71    71     0   265    0
pmappl     256      416    0      383     4     1     3     3     0     8    0
extentpl    40       46    0       28     1     0     1     1     0     8    0
phpool     112      413    0       14    12     0    12    12     0     8    0
ddb{1}> machine ddbcpu 0
Stopped at      x86_ipi_db+0x27:        addq    $0x8,%rsp
x86_ipi_db(ffffffff839c2ff0) 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
__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(ffffffff83ad3ac0) at __mp_lock+0x1a3 __mp_lock_spin sys/kern/kern_lock.c:142 [inline]
__mp_lock(ffffffff83ad3ac0) at __mp_lock+0x1a3 sys/kern/kern_lock.c:173
intr_handler(ffff80002f37e1f0,ffff8000002a2900) at intr_handler+0xe9 sys/arch/amd64/amd64/intr.c:560
Xintr_ioapic_edge23_untramp() at Xintr_ioapic_edge23_untramp+0x18f
__mp_lock(ffffffff83ad3ac0) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:142 [inline]
__mp_lock(ffffffff83ad3ac0) at __mp_lock+0x192 sys/kern/kern_lock.c:173
uvn_io(ffffef006f36f1e8,ffff80002f37e408,1,202,0) at uvn_io+0x3d4 sys/uvm/uvm_vnode.c:1225
uvn_get(ffffef006f36f1e8,94000,ffff80002f37e4d8,ffff80002f37e4bc,0,4,96a0a289b379171,4) at uvn_get+0x31d sys/uvm/uvm_vnode.c:1075
uvm_fault_lower_io(ffff80002f37e6f0,ffff80002f37e728,ffff80002f37e570,ffff80002f37e558) at uvm_fault_lower_io+0x2ce sys/uvm/uvm_fault.c:1612
uvm_fault_lower(ffff80002f37e6f0,ffff80002f37e728,ffff80002f37e670) at uvm_fault_lower+0x28d sys/uvm/uvm_fault.c:1381
uvm_fault(ffffef006d89d018,59cda01000,0,4) at uvm_fault+0x274 sys/uvm/uvm_fault.c:-1
upageflttrap(ffff80002f37e890,59cda01050) at upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:194
end trace frame: 0xffff80002f37e880, count: 0
ddb{0}> trace
x86_ipi_db(ffffffff839c2ff0) 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
__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(ffffffff83ad3ac0) at __mp_lock+0x1a3 __mp_lock_spin sys/kern/kern_lock.c:142 [inline]
__mp_lock(ffffffff83ad3ac0) at __mp_lock+0x1a3 sys/kern/kern_lock.c:173
intr_handler(ffff80002f37e1f0,ffff8000002a2900) at intr_handler+0xe9 sys/arch/amd64/amd64/intr.c:560
Xintr_ioapic_edge23_untramp() at Xintr_ioapic_edge23_untramp+0x18f
__mp_lock(ffffffff83ad3ac0) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:142 [inline]
__mp_lock(ffffffff83ad3ac0) at __mp_lock+0x192 sys/kern/kern_lock.c:173
uvn_io(ffffef006f36f1e8,ffff80002f37e408,1,202,0) at uvn_io+0x3d4 sys/uvm/uvm_vnode.c:1225
uvn_get(ffffef006f36f1e8,94000,ffff80002f37e4d8,ffff80002f37e4bc,0,4,96a0a289b379171,4) at uvn_get+0x31d sys/uvm/uvm_vnode.c:1075
uvm_fault_lower_io(ffff80002f37e6f0,ffff80002f37e728,ffff80002f37e570,ffff80002f37e558) at uvm_fault_lower_io+0x2ce sys/uvm/uvm_fault.c:1612
uvm_fault_lower(ffff80002f37e6f0,ffff80002f37e728,ffff80002f37e670) at uvm_fault_lower+0x28d sys/uvm/uvm_fault.c:1381
uvm_fault(ffffef006d89d018,59cda01000,0,4) at uvm_fault+0x274 sys/uvm/uvm_fault.c:-1
upageflttrap(ffff80002f37e890,59cda01050) at upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:194
usertrap(ffff80002f37e890) at usertrap+0x430 sys/arch/amd64/amd64/trap.c:648
recall_trap() at recall_trap+0x8
end of kernel
end trace frame: 0x7f46d0a87700, count: -16
ddb{0}> machine ddbcpu 1
Stopped at      pfi_xcommit+0x133:      movq    0x18(%rax),%rax
pfi_xcommit() at pfi_xcommit+0x133 sys/net/pf_if.c:942
pfi_group_delmember(ffff8000002d8100) at pfi_group_delmember+0x63 sys/net/pf_if.c:402
if_delgroup(ffff8000015fa000,ffff8000002d8100) at if_delgroup+0x186 sys/net/if.c:3150
if_detach(ffff8000015fa000) at if_detach+0x34b sys/net/if.c:1317
tun_clone_destroy(ffff8000015fa000) at tun_clone_destroy+0x2ce sys/net/if_tun.c:343
if_clone_destroy(ffff800038f964f0) at if_clone_destroy+0x205 sys/net/if.c:1479
tun_dev_close(5d03,7) at tun_dev_close+0x1d9 sys/net/if_tun.c:526
spec_close(ffff800038f965b0) at spec_close+0x417 sys/kern/spec_vnops.c:-1
VOP_CLOSE(ffffef006e332388,7,ffffef00097fd680,ffff80002a22a018) at VOP_CLOSE+0x132 sys/kern/vfs_vops.c:156
vn_closefile(ffffef0060b82c20,ffff80002a22a018) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:298 [inline]
vn_closefile(ffffef0060b82c20,ffff80002a22a018) at vn_closefile+0x12b sys/kern/vfs_vnops.c:621
fdrop(ffffef0060b82c20,ffff80002a22a018) at fdrop+0x121 sys/kern/kern_descrip.c:1281
closef(ffffef0060b82c20,ffff80002a22a018) at closef+0x192 sys/kern/kern_descrip.c:1265
fdfree(ffff80002a22a018) at fdfree+0x116 sys/kern/kern_descrip.c:1196
exit1(ffff80002a22a018,43,0,1) at exit1+0x595 sys/kern/kern_exit.c:215
end trace frame: 0xffff800038f96840, count: 0
ddb{1}> trace
pfi_xcommit() at pfi_xcommit+0x133 sys/net/pf_if.c:942
pfi_group_delmember(ffff8000002d8100) at pfi_group_delmember+0x63 sys/net/pf_if.c:402
if_delgroup(ffff8000015fa000,ffff8000002d8100) at if_delgroup+0x186 sys/net/if.c:3150
if_detach(ffff8000015fa000) at if_detach+0x34b sys/net/if.c:1317
tun_clone_destroy(ffff8000015fa000) at tun_clone_destroy+0x2ce sys/net/if_tun.c:343
if_clone_destroy(ffff800038f964f0) at if_clone_destroy+0x205 sys/net/if.c:1479
tun_dev_close(5d03,7) at tun_dev_close+0x1d9 sys/net/if_tun.c:526
spec_close(ffff800038f965b0) at spec_close+0x417 sys/kern/spec_vnops.c:-1
VOP_CLOSE(ffffef006e332388,7,ffffef00097fd680,ffff80002a22a018) at VOP_CLOSE+0x132 sys/kern/vfs_vops.c:156
vn_closefile(ffffef0060b82c20,ffff80002a22a018) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:298 [inline]
vn_closefile(ffffef0060b82c20,ffff80002a22a018) at vn_closefile+0x12b sys/kern/vfs_vnops.c:621
fdrop(ffffef0060b82c20,ffff80002a22a018) at fdrop+0x121 sys/kern/kern_descrip.c:1281
closef(ffffef0060b82c20,ffff80002a22a018) at closef+0x192 sys/kern/kern_descrip.c:1265
fdfree(ffff80002a22a018) at fdfree+0x116 sys/kern/kern_descrip.c:1196
exit1(ffff80002a22a018,43,0,1) at exit1+0x595 sys/kern/kern_exit.c:215
sys_exit(ffff80002a22a018,ffff800038f96920,ffff800038f96870) at sys_exit+0x1a sys/kern/kern_exit.c:-1
syscall(ffff800038f96920) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline]
syscall(ffff800038f96920) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:791
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7be51fee73b0, count: -17

Crashes (1):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2026/09/12 21:21 openbsd ed62f65fdb3a 70a60e12 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-setuid uvm_fault: pfi_xcommit
* Struck through repros no longer work on HEAD.