syzbot


uvm_fault: softclock (3)

Status: auto-obsoleted due to no activity on 2023/11/22 14:27
Reported-by: syzbot+e831b6ab0f47caff6bf5@syzkaller.appspotmail.com
First crash: 252d, last: 252d
Similar bugs (3)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
openbsd uvm_fault: softclock 1 562d 562d 0/3 auto-obsoleted due to no activity on 2023/01/17 03:44
openbsd uvm_fault: softclock (4) 9 27d 58d 0/3 upstream: reported on 2024/03/05 22:35
openbsd uvm_fault: softclock (2) 2 421d 434d 0/3 auto-obsoleted due to no activity on 2023/06/06 21:13

Sample crash report:
uvm_fault(0xffffffff82caaf60, 0x8, 0, 2) -> e
kernel: page fault trap, code=2
Stopped at      softclock+0xc7: movq    %rcx,0x8(%rax)
    TID    PID    UID     PRFLAGS     PFLAGS  CPU  COMMAND
*208014  73669      0     0x14000      0x200    0K reaper
softclock(0) at softclock+0xc7 sys/kern/kern_timeout.c:712
softintr_dispatch(0) at softintr_dispatch+0xfb sys/arch/amd64/amd64/softintr.c:90
Xsoftclock() at Xsoftclock+0x27
pmap_page_remove(fffffd800758c0a0) at pmap_page_remove+0x4b8 pmap_tlb_shootwait sys/arch/amd64/amd64/pmap.c:3346 [inline]
pmap_page_remove(fffffd800758c0a0) at pmap_page_remove+0x4b8 sys/arch/amd64/amd64/pmap.c:2009
uvm_anfree_list(fffffd807648fc78,ffff8000211b9548) at uvm_anfree_list+0x9c
amap_wipeout(fffffd806996e858) at amap_wipeout+0x1c1 sys/uvm/uvm_amap.c:504
uvm_unmap_detach(ffff8000211b9610,1) at uvm_unmap_detach+0x7d sys/uvm/uvm_map.c:1366
uvm_map_teardown(fffffd806efdd578) at uvm_map_teardown+0x2c5 sys/uvm/uvm_map.c:2585
uvmspace_free(fffffd806efdd578) at uvmspace_free+0xa6 sys/uvm/uvm_map.c:3503
reaper(ffff8000211acda0) at reaper+0x19a sys/kern/kern_exit.c:449
end trace frame: 0x0, count: 5
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(0xffffffff82caaf60, 0x8, 0, 2) -> e
ddb{0}> trace
softclock(0) at softclock+0xc7 sys/kern/kern_timeout.c:712
softintr_dispatch(0) at softintr_dispatch+0xfb sys/arch/amd64/amd64/softintr.c:90
Xsoftclock() at Xsoftclock+0x27
pmap_page_remove(fffffd800758c0a0) at pmap_page_remove+0x4b8 pmap_tlb_shootwait sys/arch/amd64/amd64/pmap.c:3346 [inline]
pmap_page_remove(fffffd800758c0a0) at pmap_page_remove+0x4b8 sys/arch/amd64/amd64/pmap.c:2009
uvm_anfree_list(fffffd807648fc78,ffff8000211b9548) at uvm_anfree_list+0x9c
amap_wipeout(fffffd806996e858) at amap_wipeout+0x1c1 sys/uvm/uvm_amap.c:504
uvm_unmap_detach(ffff8000211b9610,1) at uvm_unmap_detach+0x7d sys/uvm/uvm_map.c:1366
uvm_map_teardown(fffffd806efdd578) at uvm_map_teardown+0x2c5 sys/uvm/uvm_map.c:2585
uvmspace_free(fffffd806efdd578) at uvmspace_free+0xa6 sys/uvm/uvm_map.c:3503
reaper(ffff8000211acda0) at reaper+0x19a sys/kern/kern_exit.c:449
end trace frame: 0x0, count: -10
ddb{0}> show registers
rdi                                0
rsi                              0x1
rbp               0xffff8000211b9380
rbx                              0x1
rdx                                0
rcx               0xffffffff82cd53b0    timeout_todo
rax                                0
r8                              0xf4
r9                              0xf4
r10               0x340187186feea20a
r11                0xb5d9be65419080a
r12                       0xffffffff
r13               0xffffffff82c9ad00    rdrand_tmo
r14                                0
r15               0xfffffd8065d6fdf0
rip               0xffffffff81f94087    softclock+0xc7
cs                               0x8
rflags                       0x10246    __ALIGN_SIZE+0xf246
rsp               0xffff8000211b9340
ss                              0x10
softclock+0xc7: movq    %rcx,0x8(%rax)
ddb{0}> show proc
PROC (reaper) pid=208014 stat=onproc
    flags process=14000<NOZOMBIE,SYSTEM> proc=200<SYSTEM>
    pri=4, usrpri=50, nice=20
    forw=0xffffffffffffffff, list=0xffff8000211ad058,0xffff8000211acaf8
    process=0xffff8000fffff240 user=0xffff8000211b4000, vmspace=0xffffffff82caaf60
    estcpu=0, cpticks=0, pctcpu=0.54
    user=0, sys=0, intr=0
ddb{0}> ps
   PID     TID   PPID    UID  S       FLAGS  WAIT          COMMAND
 33635  214238   6186      0  3        0x80  nanoslp       syz-executor.4
 33635   73409   6186      0  3   0x4000080  kqread        syz-executor.4
 33635  494799   6186      0  3   0x4000080  kqread        syz-executor.4
 33635  102738   6186      0  3   0x4000080  fsleep        syz-executor.4
 50008  146260  96030      0  2           0                syz-executor.2
 50008  217894  96030      0  3   0x4000080  fsleep        syz-executor.2
 17047  222734  53360      0  2           0                syz-executor.3
 17047  487530  53360      0  3   0x4000080  fsleep        syz-executor.3
 17047  428359  53360      0  3   0x4000080  fsleep        syz-executor.3
 12943  115434  91180      0  2           0                syz-executor.7
 12943  289141  91180      0  3   0x4000080  lockf         syz-executor.7
 12943  334634  91180      0  3   0x4000080  lockf         syz-executor.7
 29576  158453      0      0  3     0x14200  acct          acct
  6186  181624   1431      0  2       0x482                syz-executor.4
 53360  320103   1431      0  3        0x82  nanoslp       syz-executor.3
 50085  315713   1431      0  3        0x82  nanoslp       syz-executor.5
 57991  518758      0      0  3     0x14280  nfsidl        nfsio
 37592   23924      0      0  3     0x14280  nfsidl        nfsio
 22712  141560      0      0  3     0x14280  nfsidl        nfsio
 83395  286468      0      0  3     0x14280  nfsidl        nfsio
 33320  424833      0      0  3     0x14280  nfsidl        nfsio
 28400  404358      0      0  3     0x14280  nfsidl        nfsio
 33947  445503      0      0  3     0x14280  nfsidl        nfsio
 49899  101942      0      0  3     0x14280  nfsidl        nfsio
  6150   20571      0      0  3     0x14280  nfsidl        nfsio
  4132  472525      0      0  3     0x14280  nfsidl        nfsio
  8586   36115      0      0  3     0x14280  nfsidl        nfsio
  2671  454881      0      0  3     0x14280  nfsidl        nfsio
 34292  218426      0      0  3     0x14280  nfsidl        nfsio
 43278  175012      0      0  3     0x14280  nfsidl        nfsio
 56635  227158      0      0  3     0x14280  nfsidl        nfsio
  1640  478868      0      0  3     0x14280  nfsidl        nfsio
  6605  514334      0      0  3     0x14280  nfsidl        nfsio
 72646   88310      0      0  3     0x14280  nfsidl        nfsio
 23519  224244      0      0  3     0x14280  nfsidl        nfsio
 67459  346570      0      0  3     0x14280  nfsidl        nfsio
 17780   86813   1431      0  3        0x82  nanoslp       syz-executor.0
  8285   63767   1431      0  2         0x2                syz-executor.6
 96030  349255   1431      0  2       0x482                syz-executor.2
 83735  181127      1      0  3    0x100083  ttyopn        getty
 91180  324480   1431      0  2       0x482                syz-executor.7
 34355  300760   1431      0  2       0x482                syz-executor.1
 57249  158670      0      0  3     0x14200  bored         sosplice
  1431  125156  94933      0  3   0x2000082  thrsleep      syz-fuzzer
  1431  360977  94933      0  3   0x6000082  nanoslp       syz-fuzzer
  1431   21614  94933      0  3   0x6000082  thrsleep      syz-fuzzer
  1431  224966  94933      0  3   0x6000082  wait          syz-fuzzer
  1431  256164  94933      0  3   0x6000082  wait          syz-fuzzer
  1431  146409  94933      0  3   0x6000082  thrsleep      syz-fuzzer
  1431  187910  94933      0  3   0x6000082  kqread        syz-fuzzer
  1431  251064  94933      0  3   0x6000082  wait          syz-fuzzer
  1431    6240  94933      0  3   0x6000082  thrsleep      syz-fuzzer
  1431   37312  94933      0  3   0x6000082  thrsleep      syz-fuzzer
  1431  173500  94933      0  3   0x6000082  thrsleep      syz-fuzzer
  1431  248486  94933      0  3   0x6000082  wait          syz-fuzzer
  1431  506723  94933      0  3   0x6000082  wait          syz-fuzzer
  1431  513846  94933      0  3   0x6000082  thrsleep      syz-fuzzer
  1431  187493  94933      0  3   0x6000082  wait          syz-fuzzer
  1431   44454  94933      0  3   0x6000082  wait          syz-fuzzer
  1431  137186  94933      0  3   0x6000082  wait          syz-fuzzer
 94933  466795  12583      0  3    0x10008a  sigsusp       ksh
 12583  348760  58808      0  3        0x9a  kqread        sshd
 58808  196508      1      0  3        0x88  kqread        sshd
 44474  305818   6502     74  3   0x1100092  bpf           pflogd
  6502   53397      1      0  3        0x80  netio         pflogd
 36561  243063  96147     73  3   0x1100090  kqread        syslogd
 96147  146040      1      0  3    0x100082  netio         syslogd
 71685   33360      1      0  3    0x100080  kqread        resolvd
 12736  308440  88083     77  3    0x100092  kqread        dhcpleased
 14703  186997  88083     77  3    0x100092  kqread        dhcpleased
 88083  335988      1      0  3        0x80  kqread        dhcpleased
 78550   74744      0      0  3     0x14200  bored         smr
 69002  218339      0      0  2     0x14200                zerothread
 13296    7234      0      0  3     0x14200  aiodoned      aiodoned
 80224  337149      0      0  3     0x14200  syncer        update
 80090  287139      0      0  3     0x14200  cleaner       cleaner
*73669  208014      0      0  7     0x14200                reaper
 24661  305639      0      0  3     0x14200  pgdaemon      pagedaemon
 98393  249864      0      0  3     0x14200  bored         viomb
 36695   27933      0      0  3  0x40014200  acpi0         acpi0
 50987  332662      0      0  7  0x40014200                idle1
 39301   79919      0      0  3     0x14200  bored         softnet3
 17507   90126      0      0  3     0x14200  bored         softnet2
 45072   75455      0      0  3     0x14200  bored         softnet1
 15736  123192      0      0  3     0x14200  bored         softnet0
 13277  310734      0      0  3     0x14200  bored         systqmp
 85345  267416      0      0  3     0x14200  bored         systq
 95822  336637      0      0  3  0x40014200  bored         softclock
 58307  224105      0      0  3  0x40014200                idle0
     1  102693      0      0  3        0x82  wait          init
     0       0     -1      0  3     0x10200  scheduler     swapper
ddb{0}> show all locks
CPU 0:
exclusive mutex /syzkaller/managers/multicore/kernel/sys/kern/kern_timeout.c:57 r = 0 (0xffffffff82c17870)
#0  witness_lock+0x447
#1  mtx_enter_try+0x104
#2  mtx_enter+0x4f sys/kern/kern_lock.c:266
#3  softclock_process_tick_timeout+0x1b0 sys/kern/kern_timeout.c:687
#4  softclock+0x130 sys/kern/kern_timeout.c:710
#5  softintr_dispatch+0xfb sys/arch/amd64/amd64/softintr.c:90
#6  Xsoftclock+0x27
#7  pmap_page_remove+0x4b8 pmap_tlb_shootwait sys/arch/amd64/amd64/pmap.c:3346 [inline]
#7  pmap_page_remove+0x4b8 sys/arch/amd64/amd64/pmap.c:2009
#8  uvm_anfree_list+0x9c
#9  amap_wipeout+0x1c1 sys/uvm/uvm_amap.c:504
#10 uvm_unmap_detach+0x7d sys/uvm/uvm_map.c:1366
#11 uvm_map_teardown+0x2c5 sys/uvm/uvm_map.c:2585
#12 uvmspace_free+0xa6 sys/uvm/uvm_map.c:3503
#13 reaper+0x19a sys/kern/kern_exit.c:449
#14 proc_trampoline+0x1c
Process 8285 (syz-executor.6) thread 0xffff8000212905c0 (63767)
exclusive rrwlock inode r = 0 (0xfffffd80651f13d8)
#0  witness_lock+0x447
#1  rw_enter+0x3c8 sys/kern/kern_rwlock.c:309
#2  rrw_enter+0x8c sys/kern/kern_rwlock.c:464
#3  VOP_LOCK+0x8b sys/kern/vfs_vops.c:518
#4  ufs_ihashins+0x46 sys/ufs/ufs/ufs_ihash.c:140
#5  ffs_vget+0x141 sys/ufs/ffs/ffs_vfsops.c:1343
#6  ffs_inode_alloc+0x1c2 sys/ufs/ffs/ffs_alloc.c:394
#7  ufs_mkdir+0xf8 sys/ufs/ufs/ufs_vnops.c:1149
#8  VOP_MKDIR+0xc3 sys/kern/vfs_vops.c:388
#9  domkdirat+0x125 sys/kern/vfs_syscalls.c:3073
#10 syscall+0x5e2 mi_syscall sys/sys/syscall_mi.h:110 [inline]
#10 syscall+0x5e2 sys/arch/amd64/amd64/trap.c:623
#11 Xsyscall+0x128
exclusive rrwlock inode r = 0 (0xfffffd806d344a28)
#0  witness_lock+0x447
#1  rw_enter+0x3c8 sys/kern/kern_rwlock.c:309
#2  rrw_enter+0x8c sys/kern/kern_rwlock.c:464
#3  VOP_LOCK+0x8b sys/kern/vfs_vops.c:518
#4  vn_lock+0x84 sys/kern/vfs_vnops.c:564
#5  vfs_lookup+0xd5 sys/kern/vfs_lookup.c:418
#6  namei+0x55a sys/kern/vfs_lookup.c:250
#7  domkdirat+0x79 sys/kern/vfs_syscalls.c:3058
#8  syscall+0x5e2 mi_syscall sys/sys/syscall_mi.h:110 [inline]
#8  syscall+0x5e2 sys/arch/amd64/amd64/trap.c:623
#9  Xsyscall+0x128
Process 73669 (reaper) thread 0xffff8000211acda0 (208014)
exclusive kernel_lock &kernel_lock r = 0 (0xffffffff82ce9528)
#0  witness_lock+0x447
#1  softintr_dispatch+0x52 sys/arch/amd64/amd64/softintr.c:88
#2  Xsoftclock+0x27
#3  pmap_page_remove+0x4b8 pmap_tlb_shootwait sys/arch/amd64/amd64/pmap.c:3346 [inline]
#3  pmap_page_remove+0x4b8 sys/arch/amd64/amd64/pmap.c:2009
#4  uvm_anfree_list+0x9c
#5  amap_wipeout+0x1c1 sys/uvm/uvm_amap.c:504
#6  uvm_unmap_detach+0x7d sys/uvm/uvm_map.c:1366
#7  uvm_map_teardown+0x2c5 sys/uvm/uvm_map.c:2585
#8  uvmspace_free+0xa6 sys/uvm/uvm_map.c:3503
#9  reaper+0x19a sys/kern/kern_exit.c:449
#10 proc_trampoline+0x1c
exclusive rwlock amaplk r = 0 (0xfffffd806776a8a0)
#0  witness_lock+0x447
#1  amap_unref+0x2f sys/uvm/uvm_amap.c:1363
#2  uvm_unmap_detach+0x7d sys/uvm/uvm_map.c:1366
#3  uvm_map_teardown+0x2c5 sys/uvm/uvm_map.c:2585
#4  uvmspace_free+0xa6 sys/uvm/uvm_map.c:3503
#5  reaper+0x19a sys/kern/kern_exit.c:449
#6  proc_trampoline+0x1c
exclusive mutex /syzkaller/managers/multicore/kernel/sys/kern/kern_timeout.c:57 r = 0 (0xffffffff82c17870)
#0  witness_lock+0x447
#1  mtx_enter_try+0x104
#2  mtx_enter+0x4f sys/kern/kern_lock.c:266
#3  softclock_process_tick_timeout+0x1b0 sys/kern/kern_timeout.c:687
#4  softclock+0x130 sys/kern/kern_timeout.c:710
#5  softintr_dispatch+0xfb sys/arch/amd64/amd64/softintr.c:90
#6  Xsoftclock+0x27
#7  pmap_page_remove+0x4b8 pmap_tlb_shootwait sys/arch/amd64/amd64/pmap.c:3346 [inline]
#7  pmap_page_remove+0x4b8 sys/arch/amd64/amd64/pmap.c:2009
#8  uvm_anfree_list+0x9c
#9  amap_wipeout+0x1c1 sys/uvm/uvm_amap.c:504
#10 uvm_unmap_detach+0x7d sys/uvm/uvm_map.c:1366
#11 uvm_map_teardown+0x2c5 sys/uvm/uvm_map.c:2585
#12 uvmspace_free+0xa6 sys/uvm/uvm_map.c:3503
#13 reaper+0x19a sys/kern/kern_exit.c:449
#14 proc_trampoline+0x1c
ddb{0}> show malloc
           Type InUse  MemUse  HighUse   Limit  Requests Type Lim
         devbuf 10225   6625K    6886K  78643K     28492        0
            pcb    13     16K      18K  78643K      1098        0
         rtable   249      7K       8K  78643K      1905        0
             pf    32      9K      10K  78643K       402        0
         ifaddr    45     17K      18K  78643K       314        0
        ifgroup    55      2K       2K  78643K       628        0
         sysctl     2      0K       2K  78643K        11        0
       counters    60     35K      36K  78643K       374        0
       ioctlops     0      0K       4K  78643K      1684        0
            iov     0      0K      24K  78643K      1493        0
          mount     1      1K       1K  78643K         1        0
            log     0      0K       0K  78643K         4        0
         vnodes  1564     98K      98K  78643K      8283        0
      UFS quota     1     32K      32K  78643K         1        0
      UFS mount     5     36K      36K  78643K         5        0
            shm     2      1K       9K  78643K       188        0
         VM map     2      1K       1K  78643K         2        0
            sem    12      0K       1K  78643K      1454        0
        dirhash    12      2K       2K  78643K        12        0
           ACPI  1697    195K     286K  78643K     12548        0
      file desc    14     49K      89K  78643K     14863        0
          sigio     0      0K       0K  78643K       190        0
           proc    70     91K     128K  78643K      2227        0
        subproc   104      6K       6K  78643K       614        0
    NFS srvsock     1      0K       0K  78643K         1        0
     NFS daemon     1     16K      16K  78643K         1        0
    ip_moptions     0      0K       0K  78643K      1011        0
       in_multi    99      7K       7K  78643K       595        0
    ether_multi     1      0K       0K  78643K         7        0
            mrt     1      0K       0K  78643K         4        0
    ISOFS mount     1     32K      32K  78643K         1        0
  MSDOSFS mount     1     16K      16K  78643K         1        0
           ttys   169    758K     758K  78643K       169        0
           exec     0      0K       1K  78643K      2913        0
     pfkey data     0      0K       0K  78643K         3        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     8     62K      64K  78643K        10        0
       UVM amap   463     94K     114K  78643K    142151        0
       UVM aobj   131      4K       4K  78643K       146        0
        memdesc     1      4K       4K  78643K         1        0
    crypto data     1      1K       1K  78643K         1        0
    ip6_options     0      0K       0K  78643K       471        0
            NDP    12      0K       2K  78643K       253        0
           temp    74   5920K    6556K  78643K    121615        0
         kqueue    14     19K      26K  78643K       913        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      523    0      520     6     5     1     3     0     8    0
rtentry    112      591    0      475     4     0     4     4     0     8    0
unpcb      144    33139    0    33054   163   154     9    10     0     8    5
syncache   296      119    0      119    26    25     1     1     0     8    1
tcpqe       32      328    0      328    21    21     0     1     0     8    0
tcpcb      808     3224    0     3219   124   123     1    15     0     8    0
arp        120       92    0       73     1     0     1     1     0     8    0
inpcb      368     8481    0     8474   186   179     7    14     0     8    6
nd6        136      143    0      114     3     1     2     2     0     8    0
pkpcb       40      140    0      140    10    10     0     1     0     8    0
kcovpl      48       42    0       34     1     0     1     1     0     8    0
ppxss      1256      50    0       50    15    14     1     1     0     8    1
pffrag     232      138    0      136     2     1     1     1     0   482    0
pffrnode    88      137    0      135     2     1     1     1     0     8    0
pffrent     40      502    0      500     2     1     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
pfstitem    24      419    0      400     1     0     1     1     0     8    0
pfstkey    128      419    0      400     2     1     1     2     0     8    0
pfstate    376      419    0      400    10     7     3     4     0     8    0
pfrule     1344      21    0       16     2     1     1     2     0     8    0
rttmr      136        3    0        3     1     1     0     1     0     8    0
art_heap8  4096       1    0        0     1     0     1     1     0     8    0
art_heap4  256     2031    0     1560    32     2    30    32     0     8    0
art_table   32     2032    0     1560     5     1     4     5     0     8    0
art_node    16      509    0      403     1     0     1     1     0     8    0
sysvmsgpl   40      113    0       97     1     0     1     1     0     8    0
semupl     112        3    0        3     1     1     0     1     0     8    0
semapl     112     1449    0     1439     1     0     1     1     0     8    0
shmpl      112      143    0       15     5     1     4     4     0     8    0
dirhash    1024      17    0        0     3     0     3     3     0     8    0
dino2pl    256    20979    0    19453    96     0    96    96     0     8    0
ffsino     272    20979    0    19453   102     0   102   102     0     8    0
nchpl      144    43304    0    42755    63    40    23    63     0     8    0
uvmvnodes   80     5926    0        0   121     0   121   121     0     8    0
vnodes     216     5926    0        0   330     0   330   330     0     8    0
namei      1024  143426    0   143425     8     7     1     2     0     8    0
percpumem   16      200    0      157     1     0     1     1     0     8    0
kstatmem   264      338    0      314     2     0     2     2     0     8    0
scxspl     216   115061    0   115061    24    23     1     8     1     8    1
plimitpl   152     1657    0     1641     1     0     1     1     0     8    0
sigapl     424    15164    0    15095    12     4     8     8     0     8    0
futexpl     64   129112    0   129108     3     2     1     1     0     8    0
knotepl    120      948    0        0    24     2    22    24     0     8    0
kqueuepl   216     2560    0     2517    46    43     3    10     0     8    0
pipepl     320     3399    0     3371   107    99     8     9     0     8    5
fdescpl    496    15098    0    15071     5     0     5     5     0     8    0
filepl     152   111015    0   110665   225   207    18    21     0     8    4
lockfpl    104     4855    0     4850    14    13     1     4     0     8    0
lockfspl    48     1638    0     1635     1     0     1     1     0     8    0
sessionpl  144       63    0       46     1     0     1     1     0     8    0
pgrppl      48      283    0      266     1     0     1     1     0     8    0
ucredpl    104    14969    0    14955     1     0     1     1     0     8    0
zombiepl   144    15756    0    15753     4     3     1     1     0     8    0
processpl  1072   15164    0    15095     5     0     5     5     0     8    0
procpl     696    38212    0    38119    24    14    10    10     0     8    0
sosppl     168      131    0      131    24    24     0     1     0     8    0
sockpl     488    42357    0    42262  1122  1100    22    38     0     8   10
mcl64k     65536     16    0        0     2     0     2     2     0     8    0
mcl16k     16384     17    0        0     3     0     3     3     0     8    0
mcl12k     12288     17    0        0     2     0     2     2     0     8    0
mcl9k      9216       7    0        0     1     0     1     1     0     8    0
mcl8k      8192      11    0        0     2     0     2     2     0     8    0
mcl4k      4096      18    0        0     3     0     3     3     0     8    0
mcl2k2     2112       4    0        0     1     0     1     1     0     8    0
mcl2k      2048     429    0        0    34     7    27    34     0     8    0
mtagpl      96      669    0        0    12     0    12    12     0     8    0
mbufpl     256     2688    0        0   128     0   128   128     0     8    0
bufpl      288    27181    0    20858   452     0   452   452     0     8    0
anonpl      24  1457191    0  1442033   189    85   104   112     0   186    0
amapchunkpl 152  448104    0   447188   126    86    40    51     0   158    2
amappl16   200    29297    0    28805   196   167    29    39     0     8    0
amappl15   192       18    0       18     1     1     0     1     0     8    0
amappl14   184      280    0      257     3     1     2     2     0     8    0
amappl13   176       13    0       12     4     3     1     1     0     8    0
amappl12   168    16319    0    16284     4     2     2     3     0     8    0
amappl11   160       79    0       65     1     0     1     1     0     8    0
amappl10   152       73    0       56     1     0     1     1     0     8    0
amappl9    144      260    0      260    19    19     0     1     0     8    0
amappl8    136     1042    0      824     9     1     8     8     0     8    0
amappl7    128      133    0      116     2     0     2     2     0     8    0
amappl6    120      622    0      595     2     1     1     2     0     8    0
amappl5    112      583    0      571     1     0     1     1     0     8    0
amappl4    104     1008    0      954     3     1     2     3     0     8    0
amappl3     96    88753    0    88668     4     1     3     3     0     8    0
amappl2     88    15845    0    15762     3     1     2     3     0     8    0
amappl1     80    64694    0    64141    23    10    13    23     0     8    0
amappl      88   140889    0   140640     7     0     7     7     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      145    0       15     3     0     3     3     0     8    0
uaddrrnd    24    15098    0    15071     1     0     1     1     0     8    0
uaddrbest   32        2    0        0     1     0     1     1     0     8    0
uaddr       24    15098    0    15071     1     0     1     1     0     8    0
vmmpekpl   168   107602    0   107530     4     0     4     4     0     8    0
vmmpepl    168   896231    0   893642   441   308   133   147     0   357    0
vmsppl     464    15097    0    15070     5     1     4     5     0     8    0
rwobjpl     56   215084    0   207240   127    13   114   114     0     8    0
pdppl      4096   30204    0    30140   740   670    70    82     0     8    6
pvpl        32  3977939    0  3956818   477   290   187   339     0   265    0
pmappl     248    15097    0    15070     3     0     3     3     0     8    0
extentpl    40       56    0       38     1     0     1     1     0     8    0
phpool     112     1934    0     1004    27     0    27    27     0     8    0
ddb{0}> machine ddbcpu 0
Invalid cpu 0
ddb{0}> trace
softclock(0) at softclock+0xc7 sys/kern/kern_timeout.c:712
softintr_dispatch(0) at softintr_dispatch+0xfb sys/arch/amd64/amd64/softintr.c:90
Xsoftclock() at Xsoftclock+0x27
pmap_page_remove(fffffd800758c0a0) at pmap_page_remove+0x4b8 pmap_tlb_shootwait sys/arch/amd64/amd64/pmap.c:3346 [inline]
pmap_page_remove(fffffd800758c0a0) at pmap_page_remove+0x4b8 sys/arch/amd64/amd64/pmap.c:2009
uvm_anfree_list(fffffd807648fc78,ffff8000211b9548) at uvm_anfree_list+0x9c
amap_wipeout(fffffd806996e858) at amap_wipeout+0x1c1 sys/uvm/uvm_amap.c:504
uvm_unmap_detach(ffff8000211b9610,1) at uvm_unmap_detach+0x7d sys/uvm/uvm_map.c:1366
uvm_map_teardown(fffffd806efdd578) at uvm_map_teardown+0x2c5 sys/uvm/uvm_map.c:2585
uvmspace_free(fffffd806efdd578) at uvmspace_free+0xa6 sys/uvm/uvm_map.c:3503
reaper(ffff8000211acda0) at reaper+0x19a sys/kern/kern_exit.c:449
end trace frame: 0x0, count: -10
ddb{0}> machine ddbcpu 1
Stopped at      x86_ipi_db+0x1e:        addq    $0x8,%rsp
x86_ipi_db(ffff800020d58ff0) 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
acpicpu_idle() at acpicpu_idle+0x312 sys/dev/acpi/acpicpu.c:1206
sched_idle(ffff800020d58ff0) at sched_idle+0x41e sys/kern/kern_sched.c:199
end trace frame: 0x0, count: 10
ddb{1}> trace
x86_ipi_db(ffff800020d58ff0) 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
acpicpu_idle() at acpicpu_idle+0x312 sys/dev/acpi/acpicpu.c:1206
sched_idle(ffff800020d58ff0) at sched_idle+0x41e sys/kern/kern_sched.c:199
end trace frame: 0x0, count: -5

Crashes (1):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2023/08/24 14:26 openbsd 229d624cca26 4d7ae7ab .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: softclock
* Struck through repros no longer work on HEAD.