syzbot


uvm_fault: igmp_leavegroup (3)

Status: fixed on 2022/03/28 22:44
Reported-by: syzbot+146823a676b7bea83649@syzkaller.appspotmail.com
Fix commit: a134c703e536 if_detach() does if_remove(ifp); NET_LOCK(); rti_delete(). New igmp groups may join while sleeping in interface destruction. In this case if_get() in igmp_joingroup() fails and rti_fill() is not called. Then inm->inm_rti may be NULL. This is the condition when syzkaller crashes in igmp_leavegroup(). Pass the ifp the current CPU is already holding down to igmp_joingroup() and igmp_leavegroup() to avoid half constructed igmp groups. Calling if_get() in caller and callee makes no sense anyway. Reported-by: syzbot+146823a676b7bea83649@syzkaller.appspotmail.com OK denis@
First crash: 339d, last: 248d
similar bugs (3):
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
openbsd uvm_fault: igmp_leavegroup (2) 1 354d 354d 3/3 fixed on 2021/12/16 06:48
openbsd uvm_fault: igmp_leavegroup (4) 132 1d20h 246d 0/3 upstream: reported on 2022/03/30 17:10
openbsd uvm_fault: igmp_leavegroup 1 940d 940d 0/3 auto-closed as invalid on 2020/08/03 03:01

Sample crash report:
uvm_fault(0xfffffd805adf2458, 0x4, 0, 1) -> e
kernel: page fault trap, code=0
Stopped at      igmp_leavegroup+0x80:   movl    0x4(%rax),%r12d
    TID    PID    UID     PRFLAGS     PFLAGS  CPU  COMMAND
igmp_leavegroup(ffff800000bdbec0) at igmp_leavegroup+0x80 sys/netinet/igmp.c:521
in_delmulti(ffff800000bdbec0) at in_delmulti+0xb7 sys/netinet/in.c:917
ip_freemoptions(ffff8000006c6ae0) at ip_freemoptions+0x4d sys/netinet/ip_output.c:1764
in_pcbdetach(fffffd8074aecb08) at in_pcbdetach+0xfc sys/netinet/in_pcb.c:585
udp_detach(fffffd807cc7a060) at udp_detach+0x3b sys/netinet/udp_usrreq.c:1258
soclose(fffffd807cc7a060,0) at soclose+0x255 sys/kern/uipc_socket.c:351
soo_close(fffffd8066de5d10,ffff8000ffff5500) at soo_close+0x40
fdrop(fffffd8066de5d10,ffff8000ffff5500) at fdrop+0xc7 sys/kern/kern_descrip.c:1279
closef(fffffd8066de5d10,ffff8000ffff5500) at closef+0x11c sys/kern/kern_descrip.c:1263
fdfree(ffff8000ffff5500) at fdfree+0xf4 sys/kern/kern_descrip.c:1195
exit1(ffff8000ffff5500,0,0,1) at exit1+0x37d sys/kern/kern_exit.c:202
sys_exit(ffff8000ffff5500,ffff8000212228c0,ffff800021222920) at sys_exit+0x16 sys/kern/kern_exit.c:95
syscall(ffff800021222990) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline]
syscall(ffff800021222990) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7f7fffffb7c0, count: 1
https://www.openbsd.org/ddb.html describes the minimum info required in bug
reports.  Insufficient info makes it difficult to find and fix bugs.
ddb{0}> 
ddb{0}> set $lines = 0
ddb{0}> set $maxwidth = 0
ddb{0}> show panic
*cpu0: uvm_fault(0xfffffd805adf2458, 0x4, 0, 1) -> e
ddb{0}> trace
igmp_leavegroup(ffff800000bdbec0) at igmp_leavegroup+0x80 sys/netinet/igmp.c:521
in_delmulti(ffff800000bdbec0) at in_delmulti+0xb7 sys/netinet/in.c:917
ip_freemoptions(ffff8000006c6ae0) at ip_freemoptions+0x4d sys/netinet/ip_output.c:1764
in_pcbdetach(fffffd8074aecb08) at in_pcbdetach+0xfc sys/netinet/in_pcb.c:585
udp_detach(fffffd807cc7a060) at udp_detach+0x3b sys/netinet/udp_usrreq.c:1258
soclose(fffffd807cc7a060,0) at soclose+0x255 sys/kern/uipc_socket.c:351
soo_close(fffffd8066de5d10,ffff8000ffff5500) at soo_close+0x40
fdrop(fffffd8066de5d10,ffff8000ffff5500) at fdrop+0xc7 sys/kern/kern_descrip.c:1279
closef(fffffd8066de5d10,ffff8000ffff5500) at closef+0x11c sys/kern/kern_descrip.c:1263
fdfree(ffff8000ffff5500) at fdfree+0xf4 sys/kern/kern_descrip.c:1195
exit1(ffff8000ffff5500,0,0,1) at exit1+0x37d sys/kern/kern_exit.c:202
sys_exit(ffff8000ffff5500,ffff8000212228c0,ffff800021222920) at sys_exit+0x16 sys/kern/kern_exit.c:95
syscall(ffff800021222990) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline]
syscall(ffff800021222990) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7f7fffffb7c0, count: -14
ddb{0}> show registers
rdi                                0
rsi                                0
rbp               0xffff800021222540
rbx                                0
rdx                                0
rcx                              0x1
rax                                0
r8                                 0
r9                                 0
r10               0xe18f5aeda493d39e
r11               0xdca0d6110e791182
r12                                0
r13                              0x3
r14               0xffff800000689000
r15               0xffff800000bdbec0
rip               0xffffffff81567760    igmp_leavegroup+0x80
cs                               0x8
rflags                       0x10246    __ALIGN_SIZE+0xf246
rsp               0xffff800021222510
ss                              0x10
igmp_leavegroup+0x80:   movl    0x4(%rax),%r12d
ddb{0}> show proc
PROC (syz-executor.1) pid=513658 stat=onproc
    flags process=1008<EXITING,SINGLEEXIT> proc=2000<WEXIT>
    pri=32, usrpri=83, nice=20
    forw=0xffffffffffffffff, list=0xffff8000ffff5260,0xffff800024660d40
    process=0xffff8000211a0860 user=0xffff80002121d000, vmspace=0xfffffd805adf2458
    estcpu=36, cpticks=1, pctcpu=0.0
    user=0, sys=0, intr=0
ddb{0}> ps
   PID     TID   PPID    UID  S       FLAGS  WAIT          COMMAND
 32756  284421  76669      0  2           0                syz-executor.6
 32756  470012  76669      0  3   0x4000080  fsleep        syz-executor.6
 40286   46773  35272      0  2           0                syz-executor.0
 40286  374809  35272      0  3   0x4000080  fsleep        syz-executor.0
 15467  508635  89963      0  2   0x4081000                syz-executor.2
 15467  246802  89963      0  3   0x4003000  suspend       syz-executor.2
 24447  343335  92552      0  2           0                syz-executor.7
 24447  457413  92552      0  3   0x4000080  fsleep        syz-executor.7
  6464  319096  20350      0  2           0                syz-executor.5
  6464  470739  20350      0  3   0x4000080  fsleep        syz-executor.5
  9803  208534  58737      0  2           0                syz-executor.4
  9803  112263  58737      0  3   0x4000080  fsleep        syz-executor.4
 35272  386035  50623      0  3        0x82  nanoslp       syz-executor.0
 20350   94423  50623      0  3        0x82  nanoslp       syz-executor.5
 46183  316935  50623      0  3        0x82  nanoslp       syz-executor.1
 76669  154050  50623      0  3        0x82  nanoslp       syz-executor.6
 89963  289782  50623      0  3        0x82  nanoslp       syz-executor.2
 61306  506649      1      0  3    0x100083  ttyin         getty
 69281  500535  50623      0  2         0x2                syz-executor.3
 58737  260863  50623      0  3        0x82  nanoslp       syz-executor.4
 96083  340150      0      0  3     0x14280  nfsidl        nfsio
 80877  227366      0      0  3     0x14280  nfsidl        nfsio
  1948  289624      0      0  3     0x14280  nfsidl        nfsio
 30083  276007      0      0  3     0x14280  nfsidl        nfsio
 81557   97947      0      0  3     0x14280  nfsidl        nfsio
  2733  218363      0      0  3     0x14280  nfsidl        nfsio
 68168  468076      0      0  3     0x14280  nfsidl        nfsio
 79039   77981      0      0  3     0x14280  nfsidl        nfsio
 38190  496800      0      0  3     0x14280  nfsidl        nfsio
 11739   17057      0      0  3     0x14280  nfsidl        nfsio
 70909  460360      0      0  3     0x14280  nfsidl        nfsio
 59746  182143      0      0  3     0x14280  nfsidl        nfsio
 80291   75460      0      0  3     0x14280  nfsidl        nfsio
 31112     301      0      0  3     0x14280  nfsidl        nfsio
 39735  301252      0      0  3     0x14280  nfsidl        nfsio
 12541  361861      0      0  3     0x14280  nfsidl        nfsio
 82217  428292      0      0  3     0x14280  nfsidl        nfsio
 69688  456856      0      0  3     0x14280  nfsidl        nfsio
 63823   97450      0      0  3     0x14280  nfsidl        nfsio
  6392   53039      0      0  3     0x14280  nfsidl        nfsio
 92552  287481  50623      0  3        0x82  nanoslp       syz-executor.7
 89173  155262      0      0  3     0x14200  acct          acct
 94459  212054      0      0  3     0x14200  bored         sosplice
 50623  326467  51477      0  3        0x82  thrsleep      syz-fuzzer
 50623   99189  51477      0  3   0x4000082  thrsleep      syz-fuzzer
 50623  178083  51477      0  3   0x4000082  thrsleep      syz-fuzzer
 50623  429721  51477      0  3   0x4000082  thrsleep      syz-fuzzer
 50623    5625  51477      0  3   0x4000082  thrsleep      syz-fuzzer
 50623  175466  51477      0  3   0x4000082  thrsleep      syz-fuzzer
 50623   78079  51477      0  3   0x4000082  thrsleep      syz-fuzzer
 50623  522807  51477      0  3   0x4000082  thrsleep      syz-fuzzer
 50623  222133  51477      0  3   0x4000082  kqread        syz-fuzzer
 51477  400260  74063      0  3    0x10008a  sigsusp       ksh
 74063  210752  38430      0  3        0x9a  kqread        sshd
 38430  373818      1      0  3        0x88  kqread        sshd
 40450   76583  42439     74  3   0x1100092  bpf           pflogd
 42439  162423      1      0  3        0x80  netio         pflogd
 20681  228505  80506     73  3   0x1100090  kqread        syslogd
 80506   89585      1      0  3    0x100082  netio         syslogd
  2204  504457      1      0  3    0x100080  kqread        resolvd
 11130  237362  25577     77  3    0x100092  kqread        dhcpleased
 96667  501628  25577     77  3    0x100092  kqread        dhcpleased
 25577  360528      1      0  3        0x80  kqread        dhcpleased
 53127  468032      0      0  3     0x14200  bored         smr
  3469  394708      0      0  2     0x14200                zerothread
 64363  102308      0      0  3     0x14200  aiodoned      aiodoned
 89990   96670      0      0  3     0x14200  syncer        update
 40368   61604      0      0  3     0x14200  cleaner       cleaner
 45077  247801      0      0  3     0x14200  reaper        reaper
  7543  508002      0      0  3     0x14200  pgdaemon      pagedaemon
 27155  164621      0      0  3     0x14200  bored         viomb
 50799  493881      0      0  3  0x40014200  acpi0         acpi0
 91188  370628      0      0  7  0x40014200                idle1
 87930   81712      0      0  3     0x14200  bored         softnet
 60046  191810      0      0  3     0x14200  bored         systqmp
  8897  365950      0      0  3     0x14200  bored         systq
 29466  113251      0      0  3  0x40014200  bored         softclock
 16958  321835      0      0  3  0x40014200                idle0
     1  381437      0      0  3        0x82  wait          init
     0       0     -1      0  3     0x10200  scheduler     swapper
ddb{0}> show all locks
ddb{0}> show malloc
           Type InUse  MemUse  HighUse   Limit  Requests Type Lim
         devbuf 10230   6582K    7376K  78643K     40203        0
            pcb    13     18K      20K  78643K      2240        0
         rtable   234     17K      18K  78643K      3143        0
         ifaddr   102     23K      24K  78643K       826        0
         sysctl     3      1K       1K  78643K         3        0
       counters    58     35K      36K  78643K       298        0
       ioctlops     0      0K       8K  78643K      7845        0
            iov     0      0K      34K  78643K      2362        0
          mount     1      1K       1K  78643K         1        0
            log     0      0K       0K  78643K         5        0
         vnodes  1552     97K      98K  78643K     10146        0
      UFS quota     1     32K      32K  78643K         1        0
      UFS mount     5     36K      36K  78643K         5        0
            shm     4      9K       9K  78643K       137        0
         VM map     2      1K       1K  78643K         2        0
            sem    12      0K       1K  78643K       621        0
        dirhash    12      2K       2K  78643K        12        0
           ACPI  1697    195K     286K  78643K     12548        0
      file desc    17     61K      81K  78643K     16589        0
          sigio     0      0K       0K  78643K       328        0
           proc    70     87K     112K  78643K      2696        0
        subproc   104      6K       6K  78643K       803        0
    NFS srvsock     1      0K       0K  78643K         1        0
     NFS daemon     1     16K      16K  78643K         1        0
    ip_moptions     2      0K       0K  78643K      1049        0
       in_multi   103      6K       7K  78643K      1048        0
    ether_multi     1      0K       0K  78643K       114        0
            mrt     2      0K       0K  78643K        66        0
    ISOFS mount     1     32K      32K  78643K         1        0
  MSDOSFS mount     1     16K      16K  78643K         1        0
           ttys   253   1129K    1129K  78643K       253        0
           exec     0      0K       2K  78643K      3798        0
     pfkey data     0      0K       0K  78643K        38        0
            tdb     3      0K       0K  78643K         3        0
        pagedep     1      8K       8K  78643K         1        0
       inodedep     1     32K      32K  78643K         1        0
         newblk     1      0K       0K  78643K         1        0
        VM swap     7     26K      26K  78643K         7        0
       UVM amap   681   1349K    1352K  78643K    207345        0
       UVM aobj   131      8K       8K  78643K       137        0
        memdesc     1      4K       4K  78643K         1        0
    crypto data     1      1K       1K  78643K         1        0
    ip6_options     3      0K       1K  78643K      5189        0
            NDP    15      0K       1K  78643K       269        0
           temp   143   4713K    4958K  78643K    185485        0
         kqueue    12     18K      25K  78643K      1169        0
      SYN cache     2     16K      16K  78643K         2        0
ddb{0}> show all pools
Name      Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle
plcache    128       22    0        0     1     0     1     1     0     8    0
rtpcb      120     1454    0     1451    23    22     1     5     0     8    0
rtentry    112     1077    0      978     5     1     4     4     0     8    0
unpcb      136    13265    0    13248   149   143     6     9     0     8    5
syncache   296      102    0      102    30    29     1     1     0     8    1
tcpqe       32       44    0       44    17    16     1     1     0     8    1
tcpcb      736    15844    0    15819   394   382    12    20     0     8    8
arp        120      194    0      178     1     0     1     1     0     8    0
inpcb      312    25782    0    25758   336   326    10    17     0     8    7
rttmr       72       12    0       12     5     5     0     1     0     8    0
nd6         48      203    0      179     1     0     1     1     0     8    0
pkpcb       40       54    0       54    11    11     0     1     0     8    0
kcovpl      48       58    0       50     1     0     1     1     0     8    0
ppxss      1248      19    0       19     6     6     0     1     0     8    0
pffrag     232      120    0      118    11    10     1     1     0   482    0
pffrnode    88      117    0      115    11    10     1     1     0     8    0
pffrent     40      572    0      570    11    10     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       4    0        1     1     0     1     1     0     8    0
pftag       88        2    0        0     1     0     1     1     0     8    0
pfqueue    264        3    0        3     1     1     0     1     0     8    0
pfstitem    24       33    0       31     1     0     1     1     0     8    0
pfstkey    112       33    0       31     1     0     1     1     0     8    0
pfstate    320       33    0       31     2     1     1     2     0     8    0
pfrule     1360     139    0      129     2     1     1     2     0     8    0
art_heap8  4096       3    0        2     3     2     1     2     0     8    0
art_heap4  256     3971    0     3537    45    16    29    31     0     8    0
art_table   32     3974    0     3539     4     0     4     4     0     8    0
art_node    16     1032    0      947     1     0     1     1     0     8    0
sysvmsgpl   40       40    0       17     1     0     1     1     0     8    0
semupl     112        5    0        5     2     2     0     1     0     8    0
semapl     112      615    0      605     1     0     1     1     0     8    0
shmpl      112      134    0        6     4     0     4     4     0     8    0
dirhash    1024      17    0        0     3     0     3     3     0     8    0
dino2pl    256    23056    0    21562    94     0    94    94     0     8    0
ffsino     272    23056    0    21562   100     0   100   100     0     8    0
nchpl      144    44724    0    43097    63     0    63    63     0     8    0
uvmvnodes   80     7841    0        0   161     0   161   161     0     8    0
vnodes     224     7841    0        0   462     0   462   462     0     8    0
namei      1024  159458    0   159458    10     9     1     2     0     8    1
percpumem   16      161    0      120     1     0     1     1     0     8    0
vcpupl     2048     282    0        2    35     0    35    35     0     8    0
vmpool     560      396    0      116    24     4    20    21     0     8    0
pfiaddrpl  120        3    0        0     1     0     1     1     0     8    0
scsiplug    72        5    0        5     1     1     0     1     0     8    0
scxspl     216   153021    0   153021    22    21     1     8     0     8    1
plimitpl   152     1160    0     1145     1     0     1     1     0     8    0
sigapl     424    16837    0    16770     9     1     8     8     0     8    0
futexpl     64   156068    0   156063     7     6     1     1     0     8    0
knotepl    120     1544    0        0    17     0    17    17     0     8    0
kqueuepl   216     3788    0     3780    89    86     3     7     0     8    2
pipepl     336     3738    0     3710   111   108     3    11     0     8    0
fdescpl    496    16781    0    16751     7     3     4     5     0     8    0
filepl     152   121388    0   121130   267   252    15    20     0     8    5
lockfpl    104     5122    0     5119    11     9     2     2     0     8    1
lockfspl    48     1390    0     1387     1     0     1     1     0     8    0
sessionpl  144       83    0       66     1     0     1     1     0     8    0
pgrppl      48      265    0      248     1     0     1     1     0     8    0
ucredpl     96    14142    0    14121     1     0     1     1     0     8    0
zombiepl   144    16773    0    16770     3     2     1     1     0     8    0
processpl  1064   16837    0    16770     5     0     5     5     0     8    0
procpl     672    44710    0    44628    23    14     9     9     0     8    1
srpgc       96       52    0       52    14    14     0     1     0     8    0
sosppl     168      191    0      191    25    24     1     1     0     8    1
sockpl     480    40680    0    40636   842   828    14    35     0     8    8
mcl64k     65536     37    0        0     5     2     3     3     0     8    0
mcl16k     16384     14    0        0     2     0     2     2     0     8    0
mcl12k     12288     33    0        0     2     0     2     2     0     8    0
mcl9k      9216      24    0        0     2     0     2     2     0     8    0
mcl8k      8192      32    0        0     4     1     3     3     0     8    0
mcl4k      4096      24    0        0     3     0     3     3     0     8    0
mcl2k2     2112       8    0        0     1     0     1     1     0     8    0
mcl2k      2048     293    0        0    18     1    17    18     0     8    0
mtagpl      96     1773    0        0    27     0    27    27     0     8    0
mbufpl     256     9266    0        0   544     0   544   544     0     8    0
bufpl      288    30584    0    22742   561     0   561   561     0     8    0
anonpl      24  4873716    0  4850395   383   227   156   186     0   186    0
amapchunkpl 152  508275    0   507077   194   137    57    59     0   158    9
amappl16   200    51429    0    50754   283   245    38    58     0     8    0
amappl15   192     2268    0     2258     1     0     1     1     0     8    0
amappl14   184     1498    0     1490     1     0     1     1     0     8    0
amappl13   176     2428    0     2423     1     0     1     1     0     8    0
amappl12   168     2621    0     2618     2     1     1     1     0     8    0
amappl11   160     1868    0     1854     1     0     1     1     0     8    0
amappl10   152     1591    0     1586     1     0     1     1     0     8    0
amappl9    144     3443    0     3439     1     0     1     1     0     8    0
amappl8    136     3991    0     3846     7     1     6     6     0     8    0
amappl7    128     2420    0     2403     1     0     1     1     0     8    0
amappl6    120     3318    0     3291     2     1     1     2     0     8    0
amappl5    112    14550    0    14530     1     0     1     1     0     8    0
amappl4    104     6439    0     6403     4     2     2     2     0     8    0
amappl3     96     3997    0     3982     1     0     1     1     0     8    0
amappl2     88     5068    0     5011     3     1     2     3     0     8    0
amappl1     80   299577    0   298967    25    11    14    19     0     8    0
amappl      88   205516    0   205124    12     2    10    10     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      136    0        6     3     0     3     3     0     8    0
uaddrrnd    24    17177    0    16867     2     0     2     2     0     8    0
uaddrbest   32        2    0        0     1     0     1     1     0     8    0
uaddr       24    17177    0    16867     2     0     2     2     0     8    0
vmmpekpl   168   124548    0   124461     5     0     5     5     0     8    0
vmmpepl    168  1538201    0  1534898   445   288   157   167     0   357    5
vmsppl     368    17176    0    16867    30     1    29    29     0     8    0
rwobjpl     56   372035    0   362165   160    18   142   143     0     8    0
pdppl      4096   34361    0    34014  1301   952   349   351     0     8    2
pvpl        32  8236047    0  8211425   740   515   225   300     0   265    0
pmappl     248    17176    0    16867    20     0    20    20     0     8    0
extentpl    40       58    0       38     1     0     1     1     0     8    0
phpool     112     3604    0     1803    52     0    52    52     0     8    0
ddb{0}> machine ddbcpu 0
Invalid cpu 0
ddb{0}> trace
igmp_leavegroup(ffff800000bdbec0) at igmp_leavegroup+0x80 sys/netinet/igmp.c:521
in_delmulti(ffff800000bdbec0) at in_delmulti+0xb7 sys/netinet/in.c:917
ip_freemoptions(ffff8000006c6ae0) at ip_freemoptions+0x4d sys/netinet/ip_output.c:1764
in_pcbdetach(fffffd8074aecb08) at in_pcbdetach+0xfc sys/netinet/in_pcb.c:585
udp_detach(fffffd807cc7a060) at udp_detach+0x3b sys/netinet/udp_usrreq.c:1258
soclose(fffffd807cc7a060,0) at soclose+0x255 sys/kern/uipc_socket.c:351
soo_close(fffffd8066de5d10,ffff8000ffff5500) at soo_close+0x40
fdrop(fffffd8066de5d10,ffff8000ffff5500) at fdrop+0xc7 sys/kern/kern_descrip.c:1279
closef(fffffd8066de5d10,ffff8000ffff5500) at closef+0x11c sys/kern/kern_descrip.c:1263
fdfree(ffff8000ffff5500) at fdfree+0xf4 sys/kern/kern_descrip.c:1195
exit1(ffff8000ffff5500,0,0,1) at exit1+0x37d sys/kern/kern_exit.c:202
sys_exit(ffff8000ffff5500,ffff8000212228c0,ffff800021222920) at sys_exit+0x16 sys/kern/kern_exit.c:95
syscall(ffff800021222990) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline]
syscall(ffff800021222990) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7f7fffffb7c0, count: -14
ddb{0}> machine ddbcpu 1
Stopped at      x86_ipi_db+0x1a:        addq    $0x8,%rsp
x86_ipi_db(ffff800020ce8ff0) at x86_ipi_db+0x1a 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+0x23
acpicpu_idle() at acpicpu_idle+0x312 sys/dev/acpi/acpicpu.c:1206
sched_idle(ffff800020ce8ff0) at sched_idle+0x417 sys/kern/kern_sched.c:178
end trace frame: 0x0, count: 10
ddb{1}> trace
x86_ipi_db(ffff800020ce8ff0) at x86_ipi_db+0x1a 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+0x23
acpicpu_idle() at acpicpu_idle+0x312 sys/dev/acpi/acpicpu.c:1206
sched_idle(ffff800020ce8ff0) at sched_idle+0x417 sys/kern/kern_sched.c:178
end trace frame: 0x0, count: -5

Crashes (37):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Title
ci-openbsd-multicore 2022/03/28 20:31 openbsd c0f44e363efa ee339263 .config log report uvm_fault: igmp_leavegroup
ci-openbsd-multicore 2022/03/27 16:42 openbsd 814fd41b4cce 89bc8608 .config log report uvm_fault: igmp_leavegroup
ci-openbsd-main 2022/03/26 20:29 openbsd 0425cdae7daf 89bc8608 .config log report uvm_fault: igmp_leavegroup
ci-openbsd-main 2022/03/24 20:51 openbsd 475618162a2c 89bc8608 .config log report uvm_fault: igmp_leavegroup
ci-openbsd-main 2022/03/21 14:32 openbsd 4ff57d1d979c e2d91b1d .config log report uvm_fault: igmp_leavegroup
ci-openbsd-main 2022/03/18 18:51 openbsd 9a63f94c7d88 e2d91b1d .config log report uvm_fault: igmp_leavegroup
ci-openbsd-main 2022/03/13 10:51 openbsd e3ee5e84dc66 9e8eaa75 .config log report uvm_fault: igmp_leavegroup
ci-openbsd-multicore 2022/03/11 16:14 openbsd 39af7dcca31c 9e8eaa75 .config log report uvm_fault: igmp_leavegroup
ci-openbsd-multicore 2022/03/10 17:33 openbsd dff6ec4066a8 9e8eaa75 .config log report uvm_fault: igmp_leavegroup
ci-openbsd-multicore 2022/03/08 21:26 openbsd 9f7de9371f1f 9e8eaa75 .config log report uvm_fault: igmp_leavegroup
ci-openbsd-main 2022/03/08 04:36 openbsd 30dd31d2109d 7bdd8b2c .config log report uvm_fault: igmp_leavegroup
ci-openbsd-multicore 2022/03/07 20:15 openbsd 1b15366c99f5 7bdd8b2c .config log report uvm_fault: igmp_leavegroup
ci-openbsd-multicore 2022/03/07 16:05 openbsd 1b15366c99f5 7bdd8b2c .config log report uvm_fault: igmp_leavegroup
ci-openbsd-main 2022/03/05 08:20 openbsd 04601fb1cd19 45a13a73 .config log report uvm_fault: igmp_leavegroup
ci-openbsd-main 2022/03/02 08:31 openbsd fbbcf6cd7f4e 45a13a73 .config log report uvm_fault: igmp_leavegroup
ci-openbsd-main 2022/02/25 09:00 openbsd 1e79788ede5c 7c337266 .config log report uvm_fault: igmp_leavegroup
ci-openbsd-multicore 2022/02/24 05:00 openbsd 63886b09705b 6e821dbf .config log report uvm_fault: igmp_leavegroup
ci-openbsd-multicore 2022/02/23 13:16 openbsd 8a1a006f7a25 6e821dbf .config log report uvm_fault: igmp_leavegroup
ci-openbsd-multicore 2022/02/22 01:49 openbsd eae0dd5728b3 6e821dbf .config log report uvm_fault: igmp_leavegroup
ci-openbsd-main 2022/02/21 21:37 openbsd eae0dd5728b3 6e821dbf .config log report uvm_fault: igmp_leavegroup
ci-openbsd-multicore 2022/02/12 00:11 openbsd 8395b968152a 8b9ca619 .config log report uvm_fault: igmp_leavegroup
ci-openbsd-main 2022/02/08 21:41 openbsd 07ec8e14730f 0b33604d .config log report uvm_fault: igmp_leavegroup
ci-openbsd-main 2022/02/07 20:57 openbsd b0aee4e7ef7d a7dab638 .config log report uvm_fault: igmp_leavegroup
ci-openbsd-main 2022/02/07 20:32 openbsd b0aee4e7ef7d a7dab638 .config log report uvm_fault: igmp_leavegroup
ci-openbsd-multicore 2022/02/07 12:15 openbsd f05e79799977 a7dab638 .config log report uvm_fault: igmp_leavegroup
ci-openbsd-main 2022/02/03 23:40 openbsd 290408e50bb2 30646bfe .config log report uvm_fault: igmp_leavegroup
ci-openbsd-multicore 2022/01/30 12:15 openbsd 8b422bc70c2d 495e00c5 .config log report uvm_fault: igmp_leavegroup
ci-openbsd-multicore 2022/01/28 22:16 openbsd df512fbc9f7b 495e00c5 .config log report uvm_fault: igmp_leavegroup
ci-openbsd-main 2022/01/28 20:51 openbsd df512fbc9f7b 495e00c5 .config log report uvm_fault: igmp_leavegroup
ci-openbsd-main 2022/01/19 09:20 openbsd 99460583ddad 0620189b .config log report uvm_fault: igmp_leavegroup
ci-openbsd-main 2022/01/18 19:52 openbsd 8b31f2a3f55c 731a2d23 .config log report uvm_fault: igmp_leavegroup
ci-openbsd-multicore 2022/01/17 20:12 openbsd f56254de68dc 731a2d23 .config log report uvm_fault: igmp_leavegroup
ci-openbsd-multicore 2022/01/16 13:07 openbsd c8b9beef26fd 723cfaf0 .config log report uvm_fault: igmp_leavegroup
ci-openbsd-multicore 2022/01/12 15:02 openbsd 7b05f821b4fe 44d1319a .config log report uvm_fault: igmp_leavegroup
ci-openbsd-main 2022/01/11 06:00 openbsd 49e0d069cc8b ddb0ab8c .config log report uvm_fault: igmp_leavegroup
ci-openbsd-multicore 2022/01/07 10:14 openbsd 3fed8fd5e758 6acc789a .config log report uvm_fault: igmp_leavegroup
ci-openbsd-main 2021/12/27 00:53 openbsd b5f6de732cb5 e4f103c4 .config log report uvm_fault: igmp_leavegroup
* Struck through repros no longer work on HEAD.