syzbot


uvm_fault: proc_trampoline (2)

Status: upstream: reported on 2025/02/06 12:48
Reported-by: syzbot+6d88abc44e13bdeba3d5@syzkaller.appspotmail.com
First crash: 389d, last: 17d
Similar bugs (1)
Kernel Title Rank 🛈 Repro Cause bisect Fix bisect Count Last Reported Patched Status
openbsd uvm_fault: proc_trampoline -1 6 523d 695d 0/3 auto-obsoleted due to no activity on 2024/12/25 08:30

Sample crash report:
uvm_fault(0xfffffd806040c028, 0x0, 0, 1) -> e
fatal page fault in supervisor mode
trap type 6 code 0 rip ffffffff8163e348 cs 8 rflags 10246 cr2 0 cpl 0 rsp ffff80002a2dbf20
gsbase 0xffff8000299ddff0  kgsbase 0x0
panic: trap type 6, code=0, pc=ffffffff8163e348
Starting stack trace...
panic(ffffffff833e2d77) at panic+0x1d0 sys/kern/subr_prf.c:229
kerntrap(ffff80002a2dbe70) at kerntrap+0x30b
alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b
dt_ioctl_record_stop(ffff8000016b9000) at dt_ioctl_record_stop+0x108 sys/dev/dt/dt_dev.c:593
dtclose(11e5f,1,2000,ffff800033bdefb0) at dtclose+0x109 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline]
dtclose(11e5f,1,2000,ffff800033bdefb0) at dtclose+0x109 sys/dev/dt/dt_dev.c:239
spec_close(ffff80002a2dc020) at spec_close+0x466 sys/kern/spec_vnops.c:-1
VOP_CLOSE(fffffd8060487a48,1,fffffd80097fd548,ffff800033bdefb0) at VOP_CLOSE+0x132 sys/kern/vfs_vops.c:156
vn_closefile(fffffd806c5bf178,ffff800033bdefb0) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline]
vn_closefile(fffffd806c5bf178,ffff800033bdefb0) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615
fdrop(fffffd806c5bf178,ffff800033bdefb0) at fdrop+0x121 sys/kern/kern_descrip.c:1280
closef(fffffd806c5bf178,ffff800033bdefb0) at closef+0x192 sys/kern/kern_descrip.c:1264
fdfree(ffff800033bdefb0) at fdfree+0x116 sys/kern/kern_descrip.c:1195
exit1(ffff800033bdefb0,0,0,1) at exit1+0x576 sys/kern/kern_exit.c:215
sys_exit(ffff800033bdefb0,ffff80002a2dc390,ffff80002a2dc2e0) at sys_exit+0x1a sys/kern/kern_exit.c:-1
syscall(ffff80002a2dc390) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline]
syscall(ffff80002a2dc390) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:775
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7ac934cf7940, count: 242
End of stack trace.
WARNING: SPL NOT LOWERED ON TRAP EXIT 4 0
Stopped at      proc_trampoline+0xc7:   movl    $0,%gs:0x688
    TID    PID    UID     PRFLAGS     PFLAGS  CPU  COMMAND
*344198  65399      0         0x2          0    1  ndp
  35553  85762      0     0x14000      0x200    0  reaper
proc_trampoline() at proc_trampoline+0xc7
end of kernel
end trace frame: 0x6f9b8ccaf5a0, count: 14
https://www.openbsd.org/ddb.html describes the minimum info required in bug
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ddb{1}> 
ddb{1}> set $lines = 0
ddb{1}> set $maxwidth = 0
ddb{1}> show panic
*cpu1: uvm_fault(0xfffffd806040c028, 0x0, 0, 1) -> e
ddb{1}> trace
proc_trampoline() at proc_trampoline+0xc7
end of kernel
end trace frame: 0x6f9b8ccaf5a0, count: -1
ddb{1}> show registers
rdi                                0
rsi                                0
rbp               0xffff80003c47bc10
rbx                                0
rdx                                0
rcx               0xffff8000fffee7e0
rax                             0x2a
r8                0xffff80003c47bb40
r9                               0x1
r10               0xa6a5c45e659bbe95
r11               0x595a92afa5bae650
r12                                0
r13                                0
r14                                0
r15                                0
rip               0xffffffff831a54c7    proc_trampoline+0xc7
cs                               0x8
rflags                         0x246
rsp               0xffff80003c47bb90
ss                              0x10
proc_trampoline+0xc7:   movl    $0,%gs:0x688
ddb{1}> show proc
PROC (ndp) tid=344198 pid=65399 tcnt=1 stat=onproc
    flags process=2<EXEC> proc=0
    runpri=86, usrpri=86, slppri=32, nice=20
    wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0
    forw=0xffffffffffffffff, list=0xffff8000fffeea78,0xffffffff839edbe8
    process=0xffff80003c419830 user=0xffff80003c476000, vmspace=0xfffffd800b0631e8
    estcpu=36, cpticks=2, pctcpu=0.0, user=0, sys=1, intr=0
ddb{1}> ps
   PID     TID   PPID    UID  S       FLAGS  WAIT          COMMAND
*65399  344198  50393      0  7         0x2                ndp
 50393  216282  96273      0  3    0x10008a  sigsusp       sh
 67860  327584  12552      0  3        0x80  nanoslp       syz-executor
 67860  348861  12552      0  3   0x4000080  kqread        syz-executor
 50887  275964  32829  60929  3        0x90  nanoslp       syz-executor
 50887  432820  32829  60929  3   0x4000090  kqsel         syz-executor
 50887   79407  32829  60929  3   0x4000090  fsleep        syz-executor
 96273  490413   6990      0  3        0x82  wait          syz-executor
 11270  280165  29037      0  3        0x80  nanoslp       syz-executor
 11270   25068  29037      0  3   0x4000080  kqsel         syz-executor
 11270  513557  29037      0  3   0x4000080  fsleep        syz-executor
 11270   17994  29037      0  3   0x4000080  fsleep        syz-executor
 70505   85621  54316      0  3        0x80  nanoslp       syz-executor
 70505  367475  54316      0  3   0x4000080  kqread        syz-executor
 70505  245078  54316      0  3   0x4000080  fsleep        syz-executor
 69683  106006  90747      0  3        0x80  nanoslp       syz-executor
 69683  297956  90747      0  3   0x4000080  kqsel         syz-executor
 69683  384631  90747      0  3   0x4000080  fsleep        syz-executor
 90747  400079   6990      0  3        0x82  nanoslp       syz-executor
 59342  403250      0      0  3     0x14280  nfsidl        nfsio
 63634   25823      0      0  3     0x14280  nfsidl        nfsio
 61412  177722      0      0  3     0x14280  nfsidl        nfsio
 62511  377544      0      0  3     0x14280  nfsidl        nfsio
 87330  397140      0      0  3     0x14200  acct          acct
 54316   84712   6990      0  3        0x82  nanoslp       syz-executor
 64505  489725   6990      0  3        0x82  nanoslp       syz-executor
 29037   15975   6990      0  3        0x82  nanoslp       syz-executor
 74542  390796   6990      0  3         0x2  biowait       syz-executor
 12552  451601   6990      0  3        0x82  nanoslp       syz-executor
 32829  103085   6990      0  3        0x82  nanoslp       syz-executor
  6990  251605  24436      0  3        0x82  kqread        syz-executor
 24436  221566  73693      0  3    0x10008a  sigsusp       ksh
 73693  452698  31497      0  3        0x98  kqread        sshd-session
 31497   24557  45402      0  3        0x92  kqread        sshd-session
 48578  399765      1      0  3    0x100083  ttyin         getty
 45402  335930      1      0  3        0x88  kqread        sshd
 51815  402641  85312     74  3   0x1100092  bpf           pflogd
 85312  102544      1      0  3        0x80  sbwait        pflogd
 67675  329326  13699     73  3   0x1100090  kqread        syslogd
 13699  351745      1      0  3    0x100082  sbwait        syslogd
 66868  486586      1      0  3    0x100080  kqread        resolvd
 73367  171278  79844     77  3    0x100092  kqread        dhcpleased
 43056   25354  79844     77  3    0x100092  kqread        dhcpleased
 79844  476100      1      0  3        0x80  kqread        dhcpleased
  3185  279171      0      0  3     0x14200  bored         smr
 93145  152559      0      0  3     0x14200  pgzero        zerothread
  4205  484972      0      0  3     0x14200  aiodoned      aiodoned
 61384   39786      0      0  3     0x14200  syncer        update
 92970   36398      0      0  3     0x14200  cleaner       cleaner
 85762   35553      0      0  7     0x14200                reaper
 72416  231826      0      0  3     0x14200  pgdaemon      pagedaemon
 70743  441577      0      0  3     0x14200  bored         viomb
 10333  318527      0      0  3  0x40014200  acpi0         acpi0
 36502  444983      0      0  3  0x40014200                idle1
 42864  113926      0      0  3     0x14200  bored         softnet1
 64327  179633      0      0  3     0x14200  bored         softnet0
  6608  238426      0      0  3     0x14200  smrbar        systqmp
 87958   29424      0      0  3     0x14200  syncxs        systq
 78211  457916      0      0  3     0x14200  tmoslp        softclockmp
 38769  244686      0      0  3  0x40014200  tmoslp        softclock
 14404  367095      0      0  3  0x40014200                idle0
     1  364142      0      0  3     0x80082  wait          init
     0       0     -1      0  3  0x10010200  scheduler     swapper
ddb{1}> show all locks
CPU 0:
exclusive mutex &uvm.fpageqlock r = 0 (0xffffffff83a13f40)
#0  witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline]
#0  witness_lock+0x5f1 sys/kern/subr_witness.c:1160
#1  mtx_enter+0x4b4 sys/kern/kern_lock.c:487
#2  uvm_pmr_freepageq+0x15c sys/uvm/uvm_pmemrange.c:1377
#3  km_free+0x36b sys/uvm/uvm_km.c:710
#4  uvm_uarea_free+0x4f sys/uvm/uvm_glue.c:304
#5  reaper+0x1ca sys/kern/kern_exit.c:493
#6  proc_trampoline+0x10
Process 74542 (syz-executor) thread 0xffff8000ffffc7d0 (390796)
exclusive rrwlock inode r = 0 (0xfffffd806e91bca8)
#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:159
#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:3113
#10 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline]
#10 syscall+0xb17 sys/arch/amd64/amd64/trap.c:775
#11 Xsyscall+0x128
exclusive rrwlock inode r = 0 (0xfffffd806d40e1f8)
#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:570
#5  vfs_lookup+0x11c sys/kern/vfs_lookup.c:-1
#6  namei+0x7ca sys/kern/vfs_lookup.c:250
#7  domkdirat+0x8b sys/kern/vfs_syscalls.c:3098
#8  syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline]
#8  syscall+0xb17 sys/arch/amd64/amd64/trap.c:775
#9  Xsyscall+0x128
Process 6608 (systqmp) thread 0xffff8000ffffe000 (238426)
shared rwlock systqmp r = 0 (0xffffffff8385a508)
#0  witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline]
#0  witness_lock+0x5f1 sys/kern/subr_witness.c:1160
#1  taskq_thread+0x12a sys/kern/kern_task.c:442
#2  proc_trampoline+0x10
Process 87958 (systq) thread 0xffff8000ffffe530 (29424)
shared rwlock systq r = 0 (0xffffffff8385a468)
#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 11103  12187K   12425K 166960K     12916        0
            pcb    20     17K      19K 166960K       210        0
         rtable   218      9K      10K 166960K       508        0
             pf    31     16K      19K 166960K       110        0
         ifaddr    39      7K       8K 166960K        89        0
        ifgroup    48      2K       2K 166960K       139        0
         sysctl     3      1K       9K 166960K        12        0
       counters    68     36K      38K 166960K       168        0
       ioctlops     0      0K       4K 166960K      1856        0
            iov     0      0K      16K 166960K        43        0
          mount     1      1K       1K 166960K         1        0
            log     0      0K       0K 166960K         4        0
         vnodes  1416     89K      90K 166960K      2146        0
      UFS quota     1     32K      32K 166960K         1        0
      UFS mount     5     36K      36K 166960K         5        0
            shm     2      2K      10K 166960K        20        0
         VM map     2      1K       1K 166960K         2        0
            sem    12      0K       0K 166960K        33        0
        dirhash    12      2K       2K 166960K        15        0
           ACPI  1692    195K     286K 166960K     12470        0
      file desc    18     65K     110K 166960K       909        0
          sigio     0      0K       0K 166960K        13        0
           proc    73    115K     180K 166960K       668        0
        subproc    72      4K       4K 166960K        90        0
    NFS srvsock     1      0K       0K 166960K         1        0
     NFS daemon     1     16K      16K 166960K         1        0
    ip_moptions     0      0K       0K 166960K       119        0
       in_multi    85      6K       7K 166960K       151        0
    ether_multi     1      0K       0K 166960K         4        0
            mrt     1      0K       0K 166960K         4        0
    ISOFS mount     1     32K      32K 166960K         1        0
  MSDOSFS mount     1     16K      16K 166960K         1        0
           ttys   235   1049K    1049K 166960K       235        0
           exec     0      0K       1K 166960K       663        0
   fusefs mount     1     32K      32K 166960K         1        0
     pfkey data     0      0K       0K 166960K         2        0
            tdb     3      0K       0K 166960K         3        0
        VM swap     8     62K      64K 166960K        10        0
       UVM amap   249    169K     183K 166960K     10100        0
       UVM aobj    22      8K       8K 166960K        26        0
     pinsyscall    43     86K     104K 166960K      2078        0
        memdesc     1      4K       4K 166960K         1        0
    crypto data     1      1K       1K 166960K         1        0
    ip6_options     0      0K       1K 166960K        77        0
            NDP    13      0K       1K 166960K        63        0
           temp    61   8679K    8931K 166960K     36713        0
         kqueue    16     26K      30K 166960K       189        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
vscsiccb    40        1    0        0     1     0     1     1     0     8    0
plcache    128       26    0        0     1     0     1     1     0     8    0
rtpcb      120      191    0      188     3     2     1     2     0     8    0
rtentry    176      149    0       58     6     0     6     6     0     8    0
unpcb      144      656    0      638     5     4     1     4     0     8    0
syncache   336        5    0        5     2     2     0     1     0     8    0
tcpqe       32        1    0        1     1     1     0     1     0     8    0
tcpcb      736      413    0      406    16     9     7    10     0     8    6
arp        136       26    0        8     1     0     1     1     0     8    0
inpcb      328     1074    0     1061    20    13     7     9     0     8    5
nd6        152       30    0        9     1     0     1     1     0     8    0
pkpcb       40        3    0        3     2     2     0     1     0     8    0
kcovpl      48       10    0        2     1     0     1     1     0     8    0
ppxss      1192      39    0       39     2     1     1     1     0     8    1
pppxif     1504       2    0        2     2     2     0     1     0     8    0
pffrag     232        8    0        2     1     0     1     1     0   482    0
pffrnode    88        7    0        2     1     0     1     1     0     8    0
pffrent     40       13    0        6     1     0     1     1     0     8    0
pfosfp      40     1428    0     1005     5     0     5     5     0     8    0
pfosfpen   112     1428    0      714    21     0    21    21     0     8    0
pfrktable  1344       3    0        3     2     1     1     1     0     8    1
pfrule     1360       1    0        1     1     1     0     1     0     8    0
rttmr      136        1    0        1     1     0     1     1     0     8    1
art_heap8  4096       2    0        0     2     0     2     2     0     8    0
art_heap4  256      674    0      282    31     0    31    31     0     8    5
art_table   40      676    0      282     5     0     5     5     0     8    0
art_node    32      149    0       68     1     0     1     1     0     8    0
sysvmsgpl   40        6    0        4     1     0     1     1     0     8    0
semupl     112        2    0        2     2     2     0     1     0     8    0
semapl     112       31    0       21     1     0     1     1     0     8    0
shmpl      112       20    0        4     1     0     1     1     0     8    0
dirhash    1024      19    0        2     3     0     3     3     0     8    0
dino2pl    256     3117    0     1613    96     0    96    96     0     8    0
ffsino     296     3117    0     1613   118     0   118   118     0     8    0
nchpl      144     4391    0     2688    64     0    64    64     0     8    0
rtmask      32        9    0        9     2     1     1     1     0     8    1
vnodes     216     3620    0        0   202     0   202   202     0     8    0
namei      1024   15475    0    15474     2     1     1     2     0     8    0
percpumem   16       99    0       50     1     0     1     1     0     8    0
vcpupl     3968       3    0        0     1     0     1     1     0     8    0
vmpool     848        3    0        0     1     0     1     1     0     8    0
kstatmem   264       84    0       60     4     2     2     3     0     8    0
scsiplug    72        3    0        3     1     0     1     1     0     8    1
scxspl     216    32668    0    32666    14    11     3     8     1     8    2
plimitpl   152      212    0      194     1     0     1     1     0     8    0
sigapl     424     1239    0     1186    10     3     7     9     0     8    0
knotepl    120      568    0        0    17     0    17    17     0     8    0
kqueuepl   224      339    0      324     7     2     5     5     0     8    4
pipepl     344      187    0      158     3     0     3     3     0     8    0
fdescpl    528     1185    0     1153     3     0     3     3     0     8    0
filepl     160     7501    0     7273    23     7    16    16     0     8    6
lockfpl    104      313    0      311     1     0     1     1     0     8    0
lockfspl    48      137    0      135     1     0     1     1     0     8    0
sessionpl  144       25    0       16     1     0     1     1     0     8    0
pgrppl      48       80    0       63     1     0     1     1     0     8    0
ucredpl    104     1202    0     1188     1     0     1     1     0     8    0
zombiepl   144     1187    0     1186     1     0     1     1     0     8    0
processpl  1232    1239    0     1186     7     2     5     7     0     8    0
procpl     664     2552    0     2489     9     3     6     8     0     8    0
sosppl     176        6    0        6     2     1     1     1     0     8    1
sockpl     752     1954    0     1920    25    14    11    13     0     8    7
mcl64k     65536      5    0        0     1     0     1     1     0     8    0
mcl16k     16384      4    0        0     1     0     1     1     0     8    0
mcl12k     12288      2    0        0     1     0     1     1     0     8    0
mcl9k      9216       1    0        0     1     0     1     1     0     8    0
mcl8k      8192       3    0        0     1     0     1     1     0     8    0
mcl4k      4096     126    0        0    16     0    16    16     0     8    0
mcl2k      2048      18    0        0     3     0     3     3     0     8    0
mtagpl      96        4    0        0     1     0     1     1     0     8    0
mbufpl     256     1129    0        0    71     0    71    71     0     8    0
bufpl      280    13665    0     7529   439     0   439   439     0     8    0
anonpl      32    10230    0        0    83     0    83    83     0   246    0
amapchunkpl 152   33929    0    33436    47    18    29    41     0   158    8
amappl16   200     4896    0     4865    20     5    15    18     0     8    5
amappl15   192        9    0        9     1     1     0     1     0     8    0
amappl14   184        2    0        2     1     1     0     1     0     8    0
amappl13   176      461    0      459     1     0     1     1     0     8    0
amappl12   168     1557    0     1515     3     0     3     3     0     8    0
amappl11   160        7    0        6     1     0     1     1     0     8    0
amappl10   152       48    0       34     1     0     1     1     0     8    0
amappl9    144      247    0      246     2     1     1     1     0     8    0
amappl8    136       24    0       22     1     0     1     1     0     8    0
amappl7    128       89    0       87     1     0     1     1     0     8    0
amappl6    120      305    0      291     1     0     1     1     0     8    0
amappl5    112       87    0       76     1     0     1     1     0     8    0
amappl4    104      431    0      401     1     0     1     1     0     8    0
amappl3     96     5773    0     5681     4     1     3     3     0     8    0
amappl2     88     1295    0     1218     2     0     2     2     0     8    0
amappl1     80    12498    0    11889    15     1    14    15     0     8    0
amappl      88     9200    0     9033     5     0     5     5     0    92    0
uvmvnodes   80      130    0        0     3     0     3     3     0     8    0
dma65536   65536      1    0        1     1     1     0     1     0     8    0
dma8192    8192       1    0        1     1     1     0     1     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      255    0      254     3     2     1     1     0     8    0
dma64       64        7    0        7     2     2     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       25    0        4     1     0     1     1     0     8    0
uaddrrnd    24     1185    0     1153     1     0     1     1     0     8    0
uaddrbest   32        2    0        0     1     0     1     1     0     8    0
uaddr       24     1185    0     1153     1     0     1     1     0     8    0
vmmpekpl   168    11098    0    11049     3     0     3     3     0     8    0
vmmpepl    168    82536    0    80600   101     3    98   100     0   357    2
vmsppl     488     1184    0     1153     6     1     5     5     0     8    0
rwobjpl     80    25048    0    23943    29     0    29    29     0     8    0
pdppl      4096    2383    0     2309   107    31    76    85     0     8    2
pvpl        32    18367    0        0   149     0   149   149     0   265    0
pmappl     256     1187    0     1153     3     0     3     3     0     8    0
extentpl    40       45    0       27     1     0     1     1     0     8    0
phpool     112      361    0       48     9     0     9     9     0     8    0
ddb{1}> machine ddbcpu 0
Stopped at      x86_ipi_db+0x27:        addq    $0x8,%rsp
x86_ipi_db(ffffffff838a8ff0) 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_const_cmp4(0,0) at __sanitizer_cov_trace_const_cmp4+0x1d kd_curproc sys/dev/kcov.c:580 [inline]
__sanitizer_cov_trace_const_cmp4(0,0) at __sanitizer_cov_trace_const_cmp4+0x1d sys/dev/kcov.c:230
msleep_nsec(ffffffff837e7ad8,ffffffff837e7aa0,4,ffffffff833c51cf,ffffffffffffffff) at msleep_nsec+0xdc sys/kern/kern_synch.c:191
reaper(ffff8000ffffdc90) at reaper+0x15b sys/kern/kern_exit.c:477
end trace frame: 0x0, count: 9
ddb{0}> trace
x86_ipi_db(ffffffff838a8ff0) 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_const_cmp4(0,0) at __sanitizer_cov_trace_const_cmp4+0x1d kd_curproc sys/dev/kcov.c:580 [inline]
__sanitizer_cov_trace_const_cmp4(0,0) at __sanitizer_cov_trace_const_cmp4+0x1d sys/dev/kcov.c:230
msleep_nsec(ffffffff837e7ad8,ffffffff837e7aa0,4,ffffffff833c51cf,ffffffffffffffff) at msleep_nsec+0xdc sys/kern/kern_synch.c:191
reaper(ffff8000ffffdc90) at reaper+0x15b sys/kern/kern_exit.c:477
end trace frame: 0x0, count: -6
ddb{0}> machine ddbcpu 1
Stopped at      proc_trampoline+0xc7:   movl    $0,%gs:0x688
proc_trampoline() at proc_trampoline+0xc7
end of kernel
end trace frame: 0x6f9b8ccaf5a0, count: 14
ddb{1}> trace
proc_trampoline() at proc_trampoline+0xc7
end of kernel
end trace frame: 0x6f9b8ccaf5a0, count: -1

Crashes (427):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2026/02/13 09:17 openbsd 7d8bc7d2b639 018ebef2 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: proc_trampoline
2026/02/12 03:58 openbsd fad87c8e2325 018ebef2 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: proc_trampoline
2026/02/11 23:58 openbsd fad87c8e2325 018ebef2 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: proc_trampoline
2026/02/11 12:59 openbsd 960213463517 018ebef2 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: proc_trampoline
2026/02/11 10:13 openbsd 960213463517 018ebef2 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: proc_trampoline
2026/02/10 12:59 openbsd 7db5826dada7 018ebef2 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: proc_trampoline
2026/02/09 18:42 openbsd a82d9bb4a825 018ebef2 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: proc_trampoline
2026/02/07 21:34 openbsd 6a5ee414a02d 018ebef2 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: proc_trampoline
2026/02/05 17:20 openbsd 46e16b2b21c5 018ebef2 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: proc_trampoline
2026/02/03 23:21 openbsd 72466e384590 018ebef2 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: proc_trampoline
2026/02/03 20:28 openbsd 72466e384590 018ebef2 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: proc_trampoline
2026/02/03 16:19 openbsd 72466e384590 018ebef2 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: proc_trampoline
2026/02/03 07:44 openbsd 2933a3218787 018ebef2 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: proc_trampoline
2026/02/02 19:31 openbsd 28dc9acc561e 018ebef2 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: proc_trampoline
2026/02/01 07:54 openbsd 43ad07ab5076 6b8752f2 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: proc_trampoline
2026/01/31 22:33 openbsd 3729e22e7105 afc0c4d4 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: proc_trampoline
2026/01/31 09:16 openbsd ffeb3c477d3b c75a2f6e .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: proc_trampoline
2026/01/31 07:39 openbsd ffeb3c477d3b c75a2f6e .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: proc_trampoline
2026/01/31 05:25 openbsd ffeb3c477d3b c75a2f6e .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: proc_trampoline
2026/01/31 02:09 openbsd ffeb3c477d3b c75a2f6e .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: proc_trampoline
2026/01/30 23:12 openbsd dfcd5193b8f0 ae7dc18c .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: proc_trampoline
2026/01/30 16:58 openbsd dfcd5193b8f0 ae7dc18c .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: proc_trampoline
2026/01/30 00:43 openbsd b822cddf2b35 bfa73b7b .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: proc_trampoline
2026/01/29 07:23 openbsd 132d3f17556a b78a7341 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: proc_trampoline
2026/01/29 06:34 openbsd 132d3f17556a b78a7341 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: proc_trampoline
2026/01/28 10:26 openbsd 2cb4d48e2c81 3029c699 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: proc_trampoline
2026/01/28 06:22 openbsd 2cb4d48e2c81 3029c699 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: proc_trampoline
2026/01/28 01:41 openbsd 2cb4d48e2c81 3029c699 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: proc_trampoline
2026/01/25 15:32 openbsd f99cc216b56b 40acda8a .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: proc_trampoline
2026/01/25 10:48 openbsd 12762e433761 40acda8a .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: proc_trampoline
2026/01/24 21:43 openbsd 652212f689da 40acda8a .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: proc_trampoline
2026/01/21 16:30 openbsd bf8f984edd8f 56f88057 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: proc_trampoline
2026/01/21 09:50 openbsd 5c0c839c3d8f 56f88057 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: proc_trampoline
2026/01/21 05:04 openbsd 5c0c839c3d8f 56f88057 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: proc_trampoline
2026/01/20 14:05 openbsd 7d7bacacae3d 56f88057 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: proc_trampoline
2026/01/19 08:16 openbsd 085960a72a94 56f88057 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: proc_trampoline
2026/01/18 00:35 openbsd f5df22e61f89 56f88057 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: proc_trampoline
2026/01/17 06:52 openbsd 5569d0f08b09 56f88057 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: proc_trampoline
2026/01/17 05:07 openbsd 8105fbd98be2 56f88057 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: proc_trampoline
2026/01/17 00:22 openbsd 8105fbd98be2 56f88057 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: proc_trampoline
2026/01/16 22:29 openbsd 8105fbd98be2 56f88057 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: proc_trampoline
2026/01/16 21:12 openbsd 8105fbd98be2 56f88057 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: proc_trampoline
2026/01/16 19:20 openbsd 8105fbd98be2 56f88057 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: proc_trampoline
2026/01/16 14:21 openbsd 28304016fe93 56f88057 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: proc_trampoline
2026/01/15 20:00 openbsd c600931321c7 56f88057 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: proc_trampoline
2026/01/15 16:21 openbsd c600931321c7 56f88057 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: proc_trampoline
2026/01/15 13:55 openbsd ac9e191703f1 56f88057 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: proc_trampoline
2026/01/15 11:23 openbsd ac9e191703f1 56f88057 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: proc_trampoline
2025/12/21 11:01 openbsd 668f1f05e71c e14dbeb9 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-setuid uvm_fault: proc_trampoline
2025/02/06 12:47 openbsd 4a7e1005694f 1e1faf27 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: proc_trampoline
* Struck through repros no longer work on HEAD.