syzbot


protection_fault: icmp_mtudisc_timeout

Status: upstream: reported on 2024/02/09 08:30
Reported-by: syzbot+9c4b2390ec9bca28c02d@syzkaller.appspotmail.com
First crash: 136d, last: 84d

Sample crash report:
kernel: protection fault trap, code=0
Stopped at      icmp_mtudisc_timeout+0xc1:      movq    0(%rax),%rcx
ddb{1}> 
ddb{1}> set $lines = 0
ddb{1}> set $maxwidth = 0
ddb{1}> show panic
the kernel did not panic
ddb{1}> trace
icmp_mtudisc_timeout(fffffd807e64c9b8,0) at icmp_mtudisc_timeout+0xc1 sys/netinet/ip_icmp.c:1072
rt_timer_queue_flush(ffffffff82d5f688) at rt_timer_queue_flush+0x1f8 sys/net/route.c:1541
ip_sysctl(ffff80002f40efbc,1,0,ffff80002f40efe8,20001100,4) at ip_sysctl+0x55b sys/netinet/ip_input.c:1659
sys_sysctl(ffff80002a1da010,ffff80002f40f120,ffff80002f40f080) at sys_sysctl+0x217 sys/kern/kern_sysctl.c:254
syscall(ffff80002f40f120) at syscall+0x53b mi_syscall sys/sys/syscall_mi.h:183 [inline]
syscall(ffff80002f40f120) at syscall+0x53b sys/arch/amd64/amd64/trap.c:577
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0xaf89016c270, count: -6
ddb{1}> show registers
rdi                             0x14
rsi                             0x14
rbp               0xffff80002f40eea0
rbx                              0x3
rdx               0xffff800000dfc940
rcx               0xffff80002a1da010
rax               0xa5fe52401bacc341
r8                0xffffffff824de5e0    tcp_mtudisc_increase
r9                                 0
r10               0xff71b19523e0ece5
r11                 0x6eb2b41fc9f8d0
r12               0xffff8000001a02a8
r13                             0x14
r14                                0
r15               0xfffffd807e64c9b8
rip               0xffffffff810e7f11    icmp_mtudisc_timeout+0xc1
cs                               0x8
rflags                       0x10246    __ALIGN_SIZE+0xf246
rsp               0xffff80002f40ee50
ss                              0x10
icmp_mtudisc_timeout+0xc1:      movq    0(%rax),%rcx
ddb{1}> show proc
PROC (syz-executor.1) tid=473769 pid=32940 tcnt=2 stat=onproc
    flags process=0 proc=4000000<THREAD>
    runpri=83, usrpri=83, slppri=17, nice=20
    wchan=0x0, wmesg=, ps_single=0x0
    forw=0xffffffffffffffff, list=0xffff80002a22d550,0xffffffff82d794e0
    process=0xffff80002ef739e0 user=0xffff80002f40a000, vmspace=0xfffffd8058b26aa0
    estcpu=36, cpticks=0, pctcpu=0.0, user=0, sys=0, intr=0
ddb{1}> ps
   PID     TID   PPID    UID  S       FLAGS  WAIT          COMMAND
 32940  382457  25306      0  2           0                syz-executor.1
*32940  473769  25306      0  7   0x4000000                syz-executor.1
 92056  125788  61197      0  2           0                syz-executor.0
 92056  242404  61197      0  3   0x4000080  bell          syz-executor.0
 92056  191286  61197      0  7   0x4000000                syz-executor.0
 92056  487344  61197      0  3   0x4000080  rest          syz-executor.0
 66160  320925  82731      0  2           0                syz-executor.6
 66160  144435  82731      0  2   0x4000000                syz-executor.6
 32246  418456  22948      0  3        0x80  nanoslp       syz-executor.5
 32246  342839  22948      0  3   0x4000080  kqsel         syz-executor.5
 32246  351275  22948      0  3   0x4000080  kqsel         syz-executor.5
 32246  345608  22948      0  3   0x4000080  fsleep        syz-executor.5
 64148  370221  74980  60928  3        0x90  nanoslp       syz-executor.2
 64148  220072  74980  60928  3   0x4000090  fsleep        syz-executor.2
 64148  263135  74980  60928  3   0x4000090  pipewr        syz-executor.2
 99665   55941  86259      0  3         0x2  biowait       syz-executor.7
 74980  336015  86259      0  3        0x82  nanoslp       syz-executor.2
 82731   11073  86259      0  3        0x82  nanoslp       syz-executor.6
 62652   54866      0      0  3     0x14200  acct          acct
 61197  262260  86259      0  3        0x82  nanoslp       syz-executor.0
  5942  362740  86259      0  2         0x2                syz-executor.3
 25306  306986  86259      0  3        0x82  nanoslp       syz-executor.1
  2102  191230  86259      0  3        0x82  nanoslp       syz-executor.4
 22948  374381  86259      0  3        0x82  nanoslp       syz-executor.5
 43601  357566      1      0  3        0x80  fsleep        syz-executor.4
 43601  172435      1      0  3   0x4000080  netio         syz-executor.4
  1753  156435      1      0  3        0x80  fsleep        syz-executor.4
  1753  156277      1      0  3   0x4000080  kqread        syz-executor.4
 33576  198084      0      0  3     0x14280  nfsidl        nfsio
 51993  419582      0      0  3     0x14280  nfsidl        nfsio
 63264   81407      0      0  3     0x14280  nfsidl        nfsio
 54713  311220      0      0  3     0x14280  nfsidl        nfsio
 53623  500387      0      0  3     0x14280  nfsidl        nfsio
 80641  222872      0      0  3     0x14280  nfsidl        nfsio
 48063  472710      0      0  3     0x14280  nfsidl        nfsio
 54691   37572      0      0  3     0x14280  nfsidl        nfsio
 73302  162695      0      0  3     0x14280  nfsidl        nfsio
 50015  473389      0      0  3     0x14280  nfsidl        nfsio
 51156  436526      0      0  3     0x14280  nfsidl        nfsio
 34796  520071      0      0  3     0x14280  nfsidl        nfsio
 17963   75827      0      0  3     0x14280  nfsidl        nfsio
 10761  355967      0      0  3     0x14280  nfsidl        nfsio
 78560  189155      0      0  3     0x14280  nfsidl        nfsio
  2345   85067      0      0  3     0x14280  nfsidl        nfsio
 11729  258465      0      0  3     0x14280  nfsidl        nfsio
 65319  188714      0      0  3     0x14280  nfsidl        nfsio
 96907  409486      0      0  3     0x14280  nfsidl        nfsio
 79006  388447      0      0  3     0x14280  nfsidl        nfsio
 30620  315512      1      0  3  0x18100083  ttyin         getty
 15976  384657      0      0  3     0x14200  bored         sosplice
 86259  485460  75467      0  3  0x1a000082  kqread        syz-fuzzer
 86259  374523  75467      0  3  0x1e000082  nanoslp       syz-fuzzer
 86259  348687  75467      0  3  0x1e000082  wait          syz-fuzzer
 86259  112968  75467      0  3  0x1e000082  thrsleep      syz-fuzzer
 86259  282118  75467      0  3  0x1e000082  thrsleep      syz-fuzzer
 86259  464028  75467      0  3  0x1e000082  wait          syz-fuzzer
 86259  245836  75467      0  3  0x1e000082  thrsleep      syz-fuzzer
 86259  184816  75467      0  3  0x1e000082  wait          syz-fuzzer
 86259  437725  75467      0  3  0x1e000082  wait          syz-fuzzer
 86259  401547  75467      0  3  0x1e000082  wait          syz-fuzzer
 86259  170917  75467      0  3  0x1e000082  thrsleep      syz-fuzzer
 86259  462817  75467      0  3  0x1e000082  wait          syz-fuzzer
 86259  113225  75467      0  3  0x1e000082  wait          syz-fuzzer
 86259  208526  75467      0  3  0x1e000082  thrsleep      syz-fuzzer
 86259  137676  75467      0  3  0x1e000082  wait          syz-fuzzer
 86259  513162  75467      0  3  0x1e000082  thrsleep      syz-fuzzer
 75467   37842  56863      0  3   0x810008a  sigsusp       ksh
 56863  156318  20909      0  3  0x1800009a  kqread        sshd
 20909  137370      1      0  3  0x18000088  kqread        sshd
 83645  229540  94660     74  3  0x19100092  bpf           pflogd
 94660  238383      1      0  3  0x18000080  netio         pflogd
 27357  187365  52057     73  3  0x19100090  kqread        syslogd
 52057  293481      1      0  3  0x18100082  netio         syslogd
 59795  239615      1      0  3  0x18100080  kqread        resolvd
 82528  167346  55269     77  3  0x18100092  kqread        dhcpleased
 24189  317632  55269     77  3  0x18100092  kqread        dhcpleased
 55269    4208      1      0  3  0x18000080  kqread        dhcpleased
  8257  215140      0      0  3     0x14200  bored         smr
 20870   32580      0      0  2     0x14200                zerothread
 10448   39980      0      0  3     0x14200  aiodoned      aiodoned
 68348  245429      0      0  3     0x14200  syncer        update
 95073   95550      0      0  3     0x14200  cleaner       cleaner
   554  102495      0      0  3     0x14200  reaper        reaper
 87432  125878      0      0  3     0x14200  pgdaemon      pagedaemon
 23395  493696      0      0  3     0x14200  bored         viomb
   890    4691      0      0  3  0x40014200  acpi0         acpi0
 75256  314500      0      0  3  0x40014200                idle1
 97538  285277      0      0  3     0x14200  bored         softnet3
 16408  187132      0      0  3     0x14200  bored         softnet2
 67807  301205      0      0  3     0x14200  bored         softnet1
 24698   79010      0      0  3     0x14200  bored         softnet0
 31307  350887      0      0  3     0x14200  bored         systqmp
 95896   20137      0      0  3     0x14200  bored         systq
 43954  467171      0      0  3     0x14200  tmoslp        softclockmp
 16561  104147      0      0  3  0x40014200  tmoslp        softclock
 67406  434358      0      0  3  0x40014200                idle0
     1   43113      0      0  3   0x8080082  wait          init
     0       0     -1      0  3     0x10200  scheduler     swapper
ddb{1}> show all locks
Process 32940 (syz-executor.1) thread 0xffff80002a1da010 (473769)
exclusive rwlock netlock r = 0 (0xffffffff82d15f30)
#0  witness_lock+0x446 stacktrace_save sys/sys/stacktrace.h:37 [inline]
#0  witness_lock+0x446 sys/kern/subr_witness.c:1187
#1  ip_sysctl+0x34e sys/netinet/ip_input.c:1656
#2  sys_sysctl+0x217 sys/kern/kern_sysctl.c:254
#3  syscall+0x53b mi_syscall sys/sys/syscall_mi.h:183 [inline]
#3  syscall+0x53b sys/arch/amd64/amd64/trap.c:577
#4  Xsyscall+0x128
exclusive kernel_lock &kernel_lock r = 0 (0xffffffff82d60cf8)
#0  witness_lock+0x446 stacktrace_save sys/sys/stacktrace.h:37 [inline]
#0  witness_lock+0x446 sys/kern/subr_witness.c:1187
#1  syscall+0x522 mi_syscall sys/sys/syscall_mi.h:183 [inline]
#1  syscall+0x522 sys/arch/amd64/amd64/trap.c:577
#2  Xsyscall+0x128
Process 99665 (syz-executor.7) thread 0xffff80002a1da2b8 (55941)
exclusive rrwlock inode r = 0 (0xfffffd805a7172c8)
#0  witness_lock+0x446 stacktrace_save sys/sys/stacktrace.h:37 [inline]
#0  witness_lock+0x446 sys/kern/subr_witness.c:1187
#1  rw_enter+0x32a sys/kern/kern_rwlock.c:309
#2  rrw_enter+0x8e sys/kern/kern_rwlock.c:464
#3  VOP_LOCK+0x8b sys/kern/vfs_vops.c:518
#4  ufs_ihashins+0x46
#5  ffs_vget+0x141 sys/ufs/ffs/ffs_vfsops.c:1230
#6  ffs_inode_alloc+0x1e4 sys/ufs/ffs/ffs_alloc.c:393
#7  ufs_mkdir+0xe6 sys/ufs/ufs/ufs_vnops.c:1117
#8  VOP_MKDIR+0xc3 sys/kern/vfs_vops.c:388
#9  domkdirat+0x125 sys/kern/vfs_syscalls.c:3077
#10 syscall+0x53b mi_syscall sys/sys/syscall_mi.h:183 [inline]
#10 syscall+0x53b sys/arch/amd64/amd64/trap.c:577
#11 Xsyscall+0x128
exclusive rrwlock inode r = 0 (0xfffffd807a1be3c8)
#0  witness_lock+0x446 stacktrace_save sys/sys/stacktrace.h:37 [inline]
#0  witness_lock+0x446 sys/kern/subr_witness.c:1187
#1  rw_enter+0x32a sys/kern/kern_rwlock.c:309
#2  rrw_enter+0x8e sys/kern/kern_rwlock.c:464
#3  VOP_LOCK+0x8b sys/kern/vfs_vops.c:518
#4  vn_lock+0x85 sys/kern/vfs_vnops.c:564
#5  vfs_lookup+0xd3 sys/kern/vfs_lookup.c:418
#6  namei+0x56a sys/kern/vfs_lookup.c:250
#7  domkdirat+0x79 sys/kern/vfs_syscalls.c:3062
#8  syscall+0x53b mi_syscall sys/sys/syscall_mi.h:183 [inline]
#8  syscall+0x53b sys/arch/amd64/amd64/trap.c:577
#9  Xsyscall+0x128
ddb{1}> show malloc
           Type InUse  MemUse  HighUse   Limit  Requests Type Lim
         devbuf 10215   6505K    8583K 166960K     15318        0
            pcb    15     22K      26K 166960K      2673        0
         rtable   235      7K       8K 166960K      5742        0
             pf    37     10K      10K 166960K       603        0
         ifaddr    47     19K      20K 166960K       591        0
        ifgroup    64      2K       2K 166960K       949        0
         sysctl     4      1K       3K 166960K        46        0
       counters    68     36K      37K 166960K       602        0
       ioctlops     0      0K       4K 166960K      3035        0
            iov     0      0K      20K 166960K      2338        0
          mount     1      1K       1K 166960K         1        0
            log     0      0K       0K 166960K         4        0
         vnodes  1710    107K     108K 166960K      6422        0
      UFS quota     1     32K      32K 166960K         1        0
      UFS mount     5     36K      36K 166960K         5        0
            shm     2      1K      13K 166960K       298        0
         VM map     2      1K       1K 166960K         2        0
            sem    12      0K       0K 166960K      3371        0
        dirhash    12      2K       3K 166960K       147        0
           ACPI  1697    195K     286K 166960K     12548        0
      file desc    17     61K      89K 166960K     27325        0
          sigio     0      0K       0K 166960K       918        0
           proc    74     91K     127K 166960K      3881        0
        subproc   130      8K       8K 166960K      1261        0
    NFS srvsock     1      0K       0K 166960K         1        0
     NFS daemon     1     16K      16K 166960K         1        0
    ip_moptions     0      0K       0K 166960K      1503        0
       in_multi    99      7K       7K 166960K      1301        0
    ether_multi     1      0K       0K 166960K        46        0
            mrt     5      0K       0K 166960K        32        0
    ISOFS mount     1     32K      32K 166960K         1        0
  MSDOSFS mount     1     16K      16K 166960K         1        0
           ttys   151    678K     678K 166960K       151        0
           exec     0      0K       1K 166960K      3538        0
     pfkey data     0      0K       0K 166960K       156        0
            tdb     3      0K       0K 166960K         3        0
        VM swap     8     62K      64K 166960K        10        0
       UVM amap   650   1200K    1204K 166960K    269118        0
       UVM aobj   131      4K       4K 166960K       133        0
     pinsyscall    26     52K     108K 166960K      4133        0
        memdesc     1      4K       4K 166960K         1        0
    crypto data     1      1K       1K 166960K         1        0
    ip6_options     0      0K       0K 166960K       879        0
            NDP    14      0K       1K 166960K       470        0
           temp    82   6812K    6893K 166960K    214129        0
         kqueue    13     20K      32K 166960K      2277        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       24    0        0     1     0     1     1     0     8    0
rtpcb      120     1925    0     1922    26    25     1     5     0     8    0
rtentry    112     1787    0     1680     4     0     4     4     0     8    0
unpcb      144    24705    0    24688   206   205     1    10     0     8    0
syncache   336      208    0      208    43    42     1     1     0     8    1
sackhl      24        5    4        5     2     2     0     1     0     8    0
tcpqe       32      156 1598      156     2     2     0     1     0     8    0
tcpcb      808     8047    0     7942   228   210    18    20     0     8    4
arp        120      410    0      393     1     0     1     1     0     8    0
ipq         40        3    0        3     1     1     0     1     0     8    0
ipqe        40        9    0        9     1     1     0     1     0     8    0
inpcb      392    20768    0    20660   285   267    18    23     0     8    4
nd6        136      297    0      272     1     0     1     1     0     8    0
pkpcb       40      102    0      102    16    16     0     1     0     8    0
kcovpl      48       96    0       86     1     0     1     1     0     8    0
ppxss      1168     102    0      102    25    25     0     1     0     8    0
pffrag     232      381    0      381     5     5     0     1     0   482    0
pffrnode    88      381    0      381     5     5     0     1     0     8    0
pffrent     40      800    0      800     6     6     0     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
pfstitem    24      795    0      786     1     0     1     1     0     8    0
pfstkey    128      802    0      793     3     1     2     3     0     8    0
pfstate    376      802    0      793    16    11     5     8     0     8    0
pfrule     1344      21    0       16     2     1     1     2     0     8    0
rttmr      136        3    0        1     1     0     1     1     0     8    0
art_heap8  4096       1    0        0     1     0     1     1     0     8    0
art_heap4  256     5021    0     4555    65    35    30    32     0     8    0
art_table   32     5022    0     4555     5     0     5     5     0     8    0
art_node    16     1692    0     1596     1     0     1     1     0     8    0
sysvmsgpl   40        8    0        4     1     0     1     1     0     8    0
semapl     112     3369    0     3359     1     0     1     1     0     8    0
shmpl      112      130    0        2     4     0     4     4     0     8    0
dirhash    1024     107    0       90     3     0     3     3     0     8    0
dino2pl    256    34169    0    32569   101     0   101   101     0     8    0
ffsino     272    34169    0    32569   108     0   108   108     0     8    0
nchpl      144    70454    0    68710    67     0    67    67     0     8    0
uvmvnodes   80     6637    0        0   136     0   136   136     0     8    0
vnodes     216     6637    0        0   369     0   369   369     0     8    0
namei      1024  243039    0   243038     6     5     1     2     0     8    0
percpumem   16      315    0      267     1     0     1     1     0     8    0
vcpupl     2048     189    0        1    24     0    24    24     0     8    0
vmpool     696      209    0       21    20     2    18    18     0     8    0
kstatmem   264      562    0      534    10     8     2     3     0     8    0
scxspl     216   216168    0   216167    67    66     1     8     1     8    0
plimitpl   152     2600    0     2582     1     0     1     1     0     8    0
sigapl     424    27518    0    27447    11     2     9     9     0     8    0
futexpl     64   216444    0   216440     3     2     1     1     0     8    0
knotepl    120     1414    0        0    19     0    19    19     0     8    0
kqueuepl   216     5422    0     5410    88    83     5     8     0     8    4
pipepl     320     4011    0     3979   124   121     3     9     0     8    0
fdescpl    496    27452    0    27422    10     5     5     5     0     8    0
filepl     152   163324    0   163045   264   248    16    24     0     8    3
lockfpl    104     6425    0     6423    11    10     1     2     0     8    0
lockfspl    48     2065    0     2063     1     0     1     1     0     8    0
sessionpl  144      109    0       90     1     0     1     1     0     8    0
pgrppl      48      510    0      491     1     0     1     1     0     8    0
ucredpl    104    25310    0    25292     2     0     2     2     0     8    0
zombiepl   144    27448    0    27447     3     2     1     1     0     8    0
processpl  1136   27518    0    27447     7     1     6     6     0     8    0
procpl     680    76189    0    76091    30    20    10    11     0     8    0
srpgc       96      129    0      129    38    38     0     1     0     8    0
sosppl     168      292    0      269    15    13     2     2     0     8    0
sockpl     584    47560    0    47429   394   379    15    27     0     8    2
mcl64k     65536     51    0        0     4     1     3     3     0     8    0
mcl16k     16384     34    0        0     4     1     3     3     0     8    0
mcl12k     12288     44    0        0     2     0     2     2     0     8    0
mcl9k      9216      41    0        0     3     1     2     2     0     8    0
mcl8k      8192      50    0        0     4     1     3     3     0     8    0
mcl4k      4096      81    0        0     5     2     3     4     0     8    0
mcl2k2     2112      17    0        0     2     0     2     2     0     8    0
mcl2k      2048     449    0        0    31    19    12    31     0     8    0
mtagpl      96       12    0        0     1     0     1     1     0     8    0
mbufpl     256     9414    0        0   541     0   541   541     0     8    0
bufpl      280    48277    0    41372   494     0   494   494     0     8    0
anonpl      24  2743055    0  2726545   327   151   176   177     0   186   57
amapchunkpl 152  851956    0   850904   201   130    71    72     0   158   26
amappl16   200    51470    0    50969   212   180    32    40     0     8    0
amappl15   192      121    0      119     1     0     1     1     0     8    0
amappl14   184      468    0      446     6     4     2     2     0     8    0
amappl13   176       90    0       89     1     0     1     1     0     8    0
amappl12   168    29446    0    29401    10     7     3     3     0     8    0
amappl11   160       68    0       54     1     0     1     1     0     8    0
amappl10   152      176    0      157     1     0     1     1     0     8    0
amappl9    144      434    0      434    42    42     0     1     0     8    0
amappl8    136     1379    0     1180     7     0     7     7     0     8    0
amappl7    128      213    0      196     1     0     1     1     0     8    0
amappl6    120     1703    0     1668     3     1     2     2     0     8    0
amappl5    112     1013    0      997     1     0     1     1     0     8    0
amappl4    104     1723    0     1665     3     1     2     3     0     8    0
amappl3     96   164811    0   164710     9     5     4     4     0     8    0
amappl2     88    29161    0    29072     5     2     3     4     0     8    0
amappl1     80   109948    0   109392    23    10    13    23     0     8    0
amappl      88   267146    0   266790    10     1     9     9     0    92    0
dma4096    4096       1    0        1     1     1     0     1     0     8    0
dma1024    1024       1    0        0     1     0     1     1     0     8    0
dma256     256        6    0        6     1     1     0     1     0     8    0
dma128     128      253    0      253     1     1     0     1     0     8    0
dma64       64        6    0        6     1     1     0     1     0     8    0
dma32       32        7    0        7     1     1     0     1     0     8    0
dma16       16       18    0       17     1     0     1     1     0     8    0
aobjpl      72      132    0        2     3     0     3     3     0     8    0
uaddrrnd    24    27661    0    27443     2     0     2     2     0     8    0
uaddrbest   32        2    0        0     1     0     1     1     0     8    0
uaddr       24    27661    0    27443     2     0     2     2     0     8    0
vmmpekpl   168   199186    0   199079     6     0     6     6     0     8    0
vmmpepl    168  1644867    0  1641972   692   540   152   165     0   357    0
vmsppl     448    27660    0    27443    32     7    25    25     0     8    0
rwobjpl     56   392268    0   383573   147    24   123   123     0     8    0
pdppl      4096   55329    0    55074  1193   932   261   261     0     8    6
pvpl        32    47411    0        0   383     0   383   383     0   265    0
pmappl     248    27660    0    27443    15     1    14    14     0     8    0
extentpl    40       56    0       38     1     0     1     1     0     8    0
phpool     112     2845    0     1681    34     0    34    34     0     8    0
ddb{1}> machine ddbcpu 0
Stopped at      x86_ipi_db+0x1e:        addq    $0x8,%rsp
ddb{0}> trace
x86_ipi_db(ffffffff82cc1ff0) at x86_ipi_db+0x1e sys/arch/amd64/amd64/db_interface.c:393
x86_ipi_handler() at x86_ipi_handler+0xb7 sys/arch/amd64/amd64/ipi.c:106
Xresume_lapic_ipi() at Xresume_lapic_ipi+0x27
__mp_lock(ffffffff82d60af0) at __mp_lock+0x122 __mp_lock_spin sys/kern/kern_lock.c:116 [inline]
__mp_lock(ffffffff82d60af0) at __mp_lock+0x122 sys/kern/kern_lock.c:147
intr_handler(ffff80002d69a220,ffff80000006bc00) at intr_handler+0x62 sys/arch/amd64/amd64/intr.c:539
Xintr_ioapic_edge23_untramp() at Xintr_ioapic_edge23_untramp+0x18f
__mp_lock(ffffffff82d60af0) at __mp_lock+0x122 __mp_lock_spin sys/kern/kern_lock.c:116 [inline]
__mp_lock(ffffffff82d60af0) at __mp_lock+0x122 sys/kern/kern_lock.c:147
end trace frame: 0x0, count: -7
ddb{0}> machine ddbcpu 1
Stopped at      icmp_mtudisc_timeout+0xc1:      movq    0(%rax),%rcx
ddb{1}> trace
icmp_mtudisc_timeout(fffffd807e64c9b8,0) at icmp_mtudisc_timeout+0xc1 sys/netinet/ip_icmp.c:1072
rt_timer_queue_flush(ffffffff82d5f688) at rt_timer_queue_flush+0x1f8 sys/net/route.c:1541
ip_sysctl(ffff80002f40efbc,1,0,ffff80002f40efe8,20001100,4) at ip_sysctl+0x55b sys/netinet/ip_input.c:1659
sys_sysctl(ffff80002a1da010,ffff80002f40f120,ffff80002f40f080) at sys_sysctl+0x217 sys/kern/kern_sysctl.c:254
syscall(ffff80002f40f120) at syscall+0x53b mi_syscall sys/sys/syscall_mi.h:183 [inline]
syscall(ffff80002f40f120) at syscall+0x53b sys/arch/amd64/amd64/trap.c:577
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0xaf89016c270, count: -6

Crashes (3):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2024/04/02 04:07 openbsd 2ee472d028ec 6ee49f2e .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore protection_fault: icmp_mtudisc_timeout
2024/03/31 22:32 openbsd 2ee472d028ec 6ee49f2e .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore protection_fault: icmp_mtudisc_timeout
2024/02/09 08:29 openbsd c037b5701899 7f07e9b0 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-main protection_fault: icmp_mtudisc_timeout
* Struck through repros no longer work on HEAD.