syzbot


panic: pool_do_get: shmpl free list modified: page ADDR; item addr ADDR; offset 0x0=0x0 != ADDR

Status: auto-obsoleted due to no activity on 2024/12/19 05:15
Reported-by: syzbot+2156e6018e9b2e85a570@syzkaller.appspotmail.com
First crash: 93d, last: 93d

Sample crash report:
panic: pool_do_get: shmplp an  i fc:re e  li  s t    m o d   ikefrinedel:  p   adgieag n o s t i c  a s s er t   i 0xofnff "f((fflda8g07sa1e 3 00  0  ; &   i tem   a d dr     0  PxfGfOfff_dL80O7CaK1EeD) !3=3f  8 0;    o&f&f se  t  0  x0 = 0 x 0   !=   0 x  7f 8c  01 8   4ac 29  9  35f 
 Stopped at      db_enter+0x25:  addq    $0x8,%rsp
    TID    PID    UID     PRFLAGS     PFLAGS  CPU  COMMAND
 146449   3458      0           0          0    1  syz-executor
*315989   8298      0           0  0x4000000    0  syz-executor
db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:437
panic(ffffffff830164d3) at panic+0x1e5 sys/kern/subr_prf.c:198
pool_do_get(ffffffff8352aca0,1,ffff80002a1520f8) at pool_do_get+0x59d
pool_get(ffffffff8352aca0,1) at pool_get+0x141
shmget_allocate_segment(ffff8000ffff3970,ffff80002a152350,10e,ffff80002a1522a0) at shmget_allocate_segment+0x1a7
sys_shmget(ffff8000ffff3970,ffff80002a152350,ffff80002a1522a0) at sys_shmget+0x1b2 sys/kern/sysv_shm.c:480
syscall(ffff80002a152350) at syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:179 [inline]
syscall(ffff80002a152350) at syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0xa746971fd10, count: 7
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: pool_do_get: shmpl free list modified: page 0xfffffd807a1e3000; item addr 0xfffffd807a1e33f8; offset 0x0=0x0 != 0x7f8c0184ac29935f
 cpu1: kernel diagnostic assertion "((flags & PGO_LOCKED) != 0 && rw_lock_held(uobj->vmobjlock)) || (flags & PGO_LOCKED) == 0" failed: file "/syzkaller/managers/multicore/kernel/sys/uvm/uvm_vnode.c", line 955
ddb{0}> trace
db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:437
panic(ffffffff830164d3) at panic+0x1e5 sys/kern/subr_prf.c:198
pool_do_get(ffffffff8352aca0,1,ffff80002a1520f8) at pool_do_get+0x59d
pool_get(ffffffff8352aca0,1) at pool_get+0x141
shmget_allocate_segment(ffff8000ffff3970,ffff80002a152350,10e,ffff80002a1522a0) at shmget_allocate_segment+0x1a7
sys_shmget(ffff8000ffff3970,ffff80002a152350,ffff80002a1522a0) at sys_shmget+0x1b2 sys/kern/sysv_shm.c:480
syscall(ffff80002a152350) at syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:179 [inline]
syscall(ffff80002a152350) at syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0xa746971fd10, count: -8
ddb{0}> show registers
rdi                                0
rsi                              0x1
rbp               0xffff80002a151f40
rbx               0xffffffff83432d87    cpu_info_full_primary+0x2d87
rdx               0xffff8000015b3600
rcx               0xffff8000ffff3970
rax               0xffffffff83431ff0    cpu_info_full_primary+0x1ff0
r8                 0x101010101010101
r9                0x8080808080808080
r10               0xb36ab1a47b0d2eab
r11               0xf90b0c341e10e56d
r12               0xffffffff83432b88    cpu_info_full_primary+0x2b88
r13                                0
r14                                0
r15                              0x1
rip               0xffffffff81c72785    db_enter+0x25
cs                               0x8
rflags                         0x246
rsp               0xffff80002a151f30
ss                              0x10
db_enter+0x25:  addq    $0x8,%rsp
ddb{0}> show proc
PROC (syz-executor) tid=315989 pid=8298 tcnt=3 stat=onproc
    flags process=0 proc=4000000<THREAD>
    runpri=86, usrpri=86, slppri=32, nice=20
    wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0
    forw=0xffffffffffffffff, list=0xffff8000ffff2f50,0xffff8000ffff27c8
    process=0xffff80003727dfb8 user=0xffff80002a14d000, vmspace=0xfffffd806b8f4a58
    estcpu=36, cpticks=3, pctcpu=0.0, user=0, sys=3, intr=0
ddb{0}> ps
   PID     TID   PPID    UID  S       FLAGS  WAIT          COMMAND
  3458  146449  50999      0  7           0                syz-executor
 24941  420781  52567      0  2           0                syz-executor
 24941  464452  52567      0  2   0x4000000                syz-executor
  8298  319712  95506      0  2           0                syz-executor
  8298  123784  95506      0  3   0x4000080  fsleep        syz-executor
* 8298  315989  95506      0  7   0x4000000                syz-executor
 20446  470339  46614      0  3           0  vmmaplk       syz-executor
 20446  519847  46614      0  3   0x4000000  physio        syz-executor
 20446  513394  46614      0  3   0x4000000  vmmaplk       syz-executor
 39553   88936  14004      0  3        0x80  nanoslp       syz-executor
 39553  453893  14004      0  3   0x4000080  sbwait        syz-executor
 39553  470427  14004      0  3   0x4000080  fsleep        syz-executor
 59516  167383  93839      0  3           0  vmmaplk       syz-executor
 59516  458840  93839      0  2   0x4000000                syz-executor
 59516  511357  93839      0  3   0x4000000  vmmaplk       syz-executor
 74587  446450  75315      0  2         0x2                syz-executor
 67079   23251  75315      0  2         0x2                syz-executor
 46614  122331  75315      0  2         0x3                syz-executor
 95506   11476  75315      0  2         0x3                syz-executor
 52567  225242  75315      0  3        0x82  nanoslp       syz-executor
 14004  158710  75315      0  2         0x3                syz-executor
 50999  304153  75315      0  2         0x3                syz-executor
 93839  180921  75315      0  2         0x3                syz-executor
  7858  368498      1      0  3    0x100083  ttyopn        getty
 41058  500795      0      0  3     0x14200  bored         sosplice
 44296    5305      0      0  3     0x14280  nfsidl        nfsio
 36719  166461      0      0  3     0x14280  nfsidl        nfsio
 79113  353930      0      0  3     0x14280  nfsidl        nfsio
 83115  369083      0      0  3     0x14280  nfsidl        nfsio
 55132  314987      0      0  3     0x14280  nfsidl        nfsio
 51803  364524      0      0  3     0x14280  nfsidl        nfsio
 12017  122698      0      0  3     0x14280  nfsidl        nfsio
  8309  338158      0      0  3     0x14280  nfsidl        nfsio
  3322  196760      0      0  3     0x14280  nfsidl        nfsio
 73421  443200      0      0  3     0x14280  nfsidl        nfsio
  9182  303660      0      0  3     0x14280  nfsidl        nfsio
  4893  395114      0      0  3     0x14280  nfsidl        nfsio
 46120  469011      0      0  3     0x14280  nfsidl        nfsio
 31433  321599      0      0  3     0x14280  nfsidl        nfsio
 55698   44191      0      0  3     0x14280  nfsidl        nfsio
 72503  329870      0      0  3     0x14280  nfsidl        nfsio
 96187  302612      0      0  3     0x14280  nfsidl        nfsio
 13836  313401      0      0  3     0x14280  nfsidl        nfsio
 67040  363647      0      0  3     0x14280  nfsidl        nfsio
 74468  119579      0      0  3     0x14280  nfsidl        nfsio
  4056  285465      0      0  3     0x14200  acct          acct
 75315    2048   9890      0  2         0x3                syz-executor
  9890  341253  67576      0  3    0x10008a  sigsusp       ksh
 67576  476659  55923      0  3        0x98  kqread        sshd-session
 55923   26991  57259      0  3        0x92  kqread        sshd-session
 57259  177002      1      0  3        0x88  kqread        sshd
 93331  385244  27574     74  3   0x1100092  bpf           pflogd
 27574  493546      1      0  3        0x80  sbwait        pflogd
 17604  404965  75790     73  2   0x1100011                syslogd
 75790  142999      1      0  3    0x100082  sbwait        syslogd
 47486  410003      1      0  3    0x100080  kqread        resolvd
 28174  121321  53656     77  3    0x100092  kqread        dhcpleased
 71722  320921  53656     77  3    0x100092  kqread        dhcpleased
 53656   75892      1      0  3        0x80  kqread        dhcpleased
 75541  162142      0      0  3     0x14200  bored         smr
 24221  234374      0      0  3     0x14200  pgzero        zerothread
 95641  150597      0      0  3     0x14200  aiodoned      aiodoned
 38585  345550      0      0  3     0x14200  syncer        update
 91354  372873      0      0  3     0x14200  cleaner       cleaner
 68992  515704      0      0  3     0x14200  reaper        reaper
 68535  156642      0      0  3     0x14200  pgdaemon      pagedaemon
 59171   83573      0      0  3     0x14200  bored         viomb
 25300  172814      0      0  3  0x40014200  acpi0         acpi0
 33453  132257      0      0  3  0x40014200                idle1
 25724  344244      0      0  3     0x14200  bored         softnet3
 92587  319337      0      0  3     0x14200  bored         softnet2
  8181  464022      0      0  3     0x14200  bored         softnet1
 48733  450743      0      0  3     0x14200  bored         softnet0
 33385  262250      0      0  3     0x14200  bored         systqmp
  6828  387555      0      0  3     0x14200  bored         systq
 33332  496987      0      0  3     0x14200  tmoslp        softclockmp
 75246  270511      0      0  3  0x40014200  tmoslp        softclock
 54744  353044      0      0  3  0x40014200                idle0
     1   29902      0      0  3     0x80082  wait          init
     0       0     -1      0  3     0x10200  scheduler     swapper
ddb{0}> show all locks
CPU 0:
exclusive mutex shmpl r = 0 (0xffffffff8352acb0)
#0  witness_lock+0x5b8 stacktrace_save sys/sys/stacktrace.h:37 [inline]
#0  witness_lock+0x5b8 sys/kern/subr_witness.c:1151
#1  mtx_enter_try+0x178
#2  mtx_enter+0x60 sys/kern/kern_lock.c:239
#3  pool_get+0x103 sys/kern/subr_pool.c:579
#4  shmget_allocate_segment+0x1a7
#5  sys_shmget+0x1b2 sys/kern/sysv_shm.c:480
#6  syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:179 [inline]
#6  syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577
#7  Xsyscall+0x128
Process 24941 (syz-executor) thread 0xffff8000ffff2f50 (464452)
exclusive rwlock vmmaplk r = 0 (0xfffffd806b8f4d00)
#0  witness_lock+0x5b8 stacktrace_save sys/sys/stacktrace.h:37 [inline]
#0  witness_lock+0x5b8 sys/kern/subr_witness.c:1151
#1  rw_enter+0x41b sys/kern/kern_rwlock.c:309
#2  vm_map_lock_ln+0x143 sys/uvm/uvm_map.c:5252
#3  uvmfault_lookup+0xe8 sys/uvm/uvm_fault.c:1779
#4  uvm_fault_check+0x83e uvmfault_amapcopy sys/uvm/uvm_fault.c:236 [inline]
#4  uvm_fault_check+0x83e sys/uvm/uvm_fault.c:710
#5  uvm_fault+0x112 sys/uvm/uvm_fault.c:600
#6  upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:188
#7  usertrap+0x2d8 sys/arch/amd64/amd64/trap.c:436
#8  recall_trap+0x8
Process 8298 (syz-executor) thread 0xffff8000ffff3970 (315989)
exclusive kernel_lock &kernel_lock r = 0 (0xffffffff83533338)
#0  witness_lock+0x5b8 stacktrace_save sys/sys/stacktrace.h:37 [inline]
#0  witness_lock+0x5b8 sys/kern/subr_witness.c:1151
#1  syscall+0xad6 mi_syscall sys/sys/syscall_mi.h:179 [inline]
#1  syscall+0xad6 sys/arch/amd64/amd64/trap.c:577
#2  Xsyscall+0x128
exclusive mutex shmpl r = 0 (0xffffffff8352acb0)
#0  witness_lock+0x5b8 stacktrace_save sys/sys/stacktrace.h:37 [inline]
#0  witness_lock+0x5b8 sys/kern/subr_witness.c:1151
#1  mtx_enter_try+0x178
#2  mtx_enter+0x60 sys/kern/kern_lock.c:239
#3  pool_get+0x103 sys/kern/subr_pool.c:579
#4  shmget_allocate_segment+0x1a7
#5  sys_shmget+0x1b2 sys/kern/sysv_shm.c:480
#6  syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:179 [inline]
#6  syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577
#7  Xsyscall+0x128
Process 20446 (syz-executor) thread 0xffff8000371cc7d8 (519847)
shared rwlock vmmaplk r = 0 (0xfffffd806b8f42b0)
#0  witness_lock+0x5b8 stacktrace_save sys/sys/stacktrace.h:37 [inline]
#0  witness_lock+0x5b8 sys/kern/subr_witness.c:1151
#1  uvm_vslock_device+0x149 sys/uvm/uvm_glue.c:174
#2  physio+0x277 sys/kern/kern_physio.c:139
#3  spec_read+0x155 sys/kern/spec_vnops.c:215
#4  VOP_READ+0x102 sys/kern/vfs_vops.c:227
#5  vn_read+0x17b sys/kern/vfs_vnops.c:369
#6  dofilereadv+0x230 sys/kern/sys_generic.c:252
#7  sys_pread+0xae sys/kern/vfs_syscalls.c:3293
#8  syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:179 [inline]
#8  syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577
#9  Xsyscall+0x128
Process 59516 (syz-executor) thread 0xffff8000ffff2a40 (458840)
exclusive rwlock vmmaplk r = 0 (0xfffffd806c2b0b58)
#0  witness_lock+0x5b8 stacktrace_save sys/sys/stacktrace.h:37 [inline]
#0  witness_lock+0x5b8 sys/kern/subr_witness.c:1151
#1  rw_enter+0x41b sys/kern/kern_rwlock.c:309
#2  vm_map_lock_ln+0x143 sys/uvm/uvm_map.c:5252
#3  uvmfault_lookup+0xe8 sys/uvm/uvm_fault.c:1779
#4  uvm_fault_check+0x83e uvmfault_amapcopy sys/uvm/uvm_fault.c:236 [inline]
#4  uvm_fault_check+0x83e sys/uvm/uvm_fault.c:710
#5  uvm_fault+0x112 sys/uvm/uvm_fault.c:600
#6  kpageflttrap+0x2d0 sys/arch/amd64/amd64/trap.c:279
#7  kerntrap+0x14a sys/arch/amd64/amd64/trap.c:332
#8  alltraps_kern_meltdown+0x7b
#9  copyout+0x57
#10 mmrw+0x3de
#11 spec_read+0x155 sys/kern/spec_vnops.c:215
#12 VOP_READ+0x102 sys/kern/vfs_vops.c:227
#13 vn_read+0x17b sys/kern/vfs_vnops.c:369
#14 dofilereadv+0x230 sys/kern/sys_generic.c:252
#15 sys_preadv+0xe3 sys/kern/vfs_syscalls.c:3322
#16 syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:179 [inline]
#16 syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577
#17 Xsyscall+0x128
Process 74587 (syz-executor) thread 0xffff8000371cc550 (446450)
exclusive rwlock vmmaplk r = 0 (0xfffffd806e9422b0)
#0  witness_lock+0x5b8 stacktrace_save sys/sys/stacktrace.h:37 [inline]
#0  witness_lock+0x5b8 sys/kern/subr_witness.c:1151
#1  rw_enter+0x41b sys/kern/kern_rwlock.c:309
#2  vm_map_lock_ln+0x143 sys/uvm/uvm_map.c:5252
#3  uvmspace_fork+0x12b sys/uvm/uvm_map.c:3822
#4  process_new+0x553 sys/kern/kern_fork.c:279
#5  fork1+0x3ea sys/kern/kern_fork.c:405
#6  syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:179 [inline]
#6  syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577
#7  Xsyscall+0x128
exclusive rwlock vmmaplk r = 0 (0xfffffd806b8f4468)
#0  witness_lock+0x5b8 stacktrace_save sys/sys/stacktrace.h:37 [inline]
#0  witness_lock+0x5b8 sys/kern/subr_witness.c:1151
#1  rw_enter+0x41b sys/kern/kern_rwlock.c:309
#2  vm_map_lock_ln+0x143 sys/uvm/uvm_map.c:5252
#3  uvmspace_fork+0x44 sys/uvm/uvm_map.c:3813
#4  process_new+0x553 sys/kern/kern_fork.c:279
#5  fork1+0x3ea sys/kern/kern_fork.c:405
#6  syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:179 [inline]
#6  syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577
#7  Xsyscall+0x128
Process 67079 (syz-executor) thread 0xffff8000371e6538 (23251)
exclusive rwlock vmmaplk r = 0 (0xfffffd806e942990)
#0  witness_lock+0x5b8 stacktrace_save sys/sys/stacktrace.h:37 [inline]
#0  witness_lock+0x5b8 sys/kern/subr_witness.c:1151
#1  rw_enter+0x41b sys/kern/kern_rwlock.c:309
#2  vm_map_lock_ln+0x143 sys/uvm/uvm_map.c:5252
#3  uvmspace_fork+0x12b sys/uvm/uvm_map.c:3822
#4  process_new+0x553 sys/kern/kern_fork.c:279
#5  fork1+0x3ea sys/kern/kern_fork.c:405
#6  syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:179 [inline]
#6  syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577
#7  Xsyscall+0x128
exclusive rwlock vmmaplk r = 0 (0xfffffd806b8f4eb8)
#0  witness_lock+0x5b8 stacktrace_save sys/sys/stacktrace.h:37 [inline]
#0  witness_lock+0x5b8 sys/kern/subr_witness.c:1151
#1  rw_enter+0x41b sys/kern/kern_rwlock.c:309
#2  vm_map_lock_ln+0x143 sys/uvm/uvm_map.c:5252
#3  uvmspace_fork+0x44 sys/uvm/uvm_map.c:3813
#4  process_new+0x553 sys/kern/kern_fork.c:279
#5  fork1+0x3ea sys/kern/kern_fork.c:405
#6  syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:179 [inline]
#6  syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577
#7  Xsyscall+0x128
Process 50999 (syz-executor) thread 0xffff80002a03e7b0 (304153)
exclusive rwlock vmmaplk r = 0 (0xfffffd806b8f47d8)
#0  witness_lock+0x5b8 stacktrace_save sys/sys/stacktrace.h:37 [inline]
#0  witness_lock+0x5b8 sys/kern/subr_witness.c:1151
#1  rw_enter+0x41b sys/kern/kern_rwlock.c:309
#2  vm_map_lock_ln+0x143 sys/uvm/uvm_map.c:5252
#3  uvmspace_fork+0x12b sys/uvm/uvm_map.c:3822
#4  process_new+0x553 sys/kern/kern_fork.c:279
#5  fork1+0x3ea sys/kern/kern_fork.c:405
#6  syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:179 [inline]
#6  syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577
#7  Xsyscall+0x128
exclusive rwlock vmmaplk r = 0 (0xfffffd806e9420f8)
#0  witness_lock+0x5b8 stacktrace_save sys/sys/stacktrace.h:37 [inline]
#0  witness_lock+0x5b8 sys/kern/subr_witness.c:1151
#1  rw_enter+0x41b sys/kern/kern_rwlock.c:309
#2  vm_map_lock_ln+0x143 sys/uvm/uvm_map.c:5252
#3  uvmspace_fork+0x44 sys/uvm/uvm_map.c:3813
#4  process_new+0x553 sys/kern/kern_fork.c:279
#5  fork1+0x3ea sys/kern/kern_fork.c:405
#6  syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:179 [inline]
#6  syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577
#7  Xsyscall+0x128
ddb{0}> show malloc
           Type InUse  MemUse  HighUse   Limit  Requests Type Lim
         devbuf 10210  14266K   14587K 166960K     12973        0
            pcb    17     14K      16K 166960K       410        0
         rtable   180      8K      10K 166960K      2494        0
             pf    40     18K      26K 166960K       256        0
         ifaddr    37      6K       8K 166960K       344        0
        ifgroup    59      2K       2K 166960K       395        0
         sysctl     4      1K       2K 166960K         9        0
       counters    66     36K      37K 166960K       242        0
       ioctlops     0      0K       4K 166960K      1727        0
            iov     1      8K      24K 166960K       187        0
          mount     1      1K       1K 166960K         1        0
            log     0      0K       0K 166960K         4        0
         vnodes  1492     94K      94K 166960K      3212        0
      UFS quota     1     32K      32K 166960K         1        0
      UFS mount     5     36K      36K 166960K         5        0
            shm     2      1K       5K 166960K        17        0
         VM map     2      1K       1K 166960K         2        0
            sem    12      0K       0K 166960K        42        0
        dirhash    15      2K       2K 166960K        21        0
           ACPI  1690    195K     286K 166960K     12418        0
      file desc    18     65K      89K 166960K      2233        0
          sigio     0      0K       0K 166960K        21        0
           proc    72     91K     128K 166960K      2515        0
        subproc   104      6K       6K 166960K       988        0
    NFS srvsock     1      0K       0K 166960K         1        0
     NFS daemon     1     16K      16K 166960K         1        0
    ip_moptions     0      0K       0K 166960K       151        0
       in_multi    74      5K       7K 166960K       866        0
    ether_multi     1      0K       0K 166960K        10        0
            mrt     1      0K       0K 166960K         8        0
    ISOFS mount     1     32K      32K 166960K         1        0
  MSDOSFS mount     1     16K      16K 166960K         1        0
           ttys    79    360K     360K 166960K        79        0
           exec     0      0K       1K 166960K      1433        0
     pfkey data     0      0K       0K 166960K         1        0
            tdb     3      0K       0K 166960K         3        0
        VM swap     8     62K      64K 166960K        10        0
       UVM amap   230     73K      92K 166960K     18574        0
       UVM aobj    65      3K       3K 166960K        67        0
     pinsyscall    43     86K     103K 166960K      5071        0
        memdesc     1      4K       4K 166960K         1        0
    crypto data     1      1K       1K 166960K         1        0
    ip6_options     0      0K       0K 166960K        67        0
            NDP    13      0K       2K 166960K       253        0
           temp    76   6824K    7084K 166960K     82404        0
         kqueue    13     20K      30K 166960K       209        0
      SYN cache     2     16K      16K 166960K         2        0
ddb{0}> 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      377    0      374     5     4     1     3     0     8    0
rtentry    112      884    0      807     4     0     4     4     0     8    0
unpcb      144     1094    0     1077    14    13     1     4     0     8    0
syncache   336        9    0        9     5     5     0     1     0     8    0
tcpqe       32        4    0        4     3     3     0     1     0     8    0
tcpcb      808      453    0      449    15    14     1     8     0     8    0
arp        120      160    0      146     1     0     1     1     0     8    0
inpcb      336     2004    0     1996    27    25     2     8     0     8    1
nd6        136      238    0      220     2     1     1     2     0     8    0
pkpcb       40       10    0       10     4     3     1     1     0     8    1
kcovpl      48       76    0       68     1     0     1     1     0     8    0
ppxss      1168      14    0       14     7     6     1     1     0     8    1
pfstscr     40        1    0        1     1     1     0     1     0     8    0
pffrag     232        9    0        8     1     0     1     1     0   482    0
pffrnode    88        9    0        8     1     0     1     1     0     8    0
pffrent     40       13    0       12     1     0     1     1     0     8    0
pfosfp      40     1428    0     1428     5     0     5     5     0     8    5
pfosfpen   112     1428    0     1428    21     0    21    21     0     8   21
pfrktable  1344       1    0        0     1     0     1     1     0     8    0
pfanchor   1288       1    0        0     1     0     1     1     0     8    0
pftag       88        4    0        0     1     0     1     1     0     8    0
pfqueue    264        1    0        1     1     1     0     1     0     8    0
pfstitem    24      170    0      149     1     0     1     1     0     8    0
pfstkey    128      172    0      150     2     0     2     2     0     8    0
pfstate    376      169    0      149     4     0     4     4     0     8    0
pfrule     1344      32    0       19     3     1     2     2     0     8    0
art_heap8  4096       2    0        0     2     0     2     2     0     8    0
art_heap4  256     3554    0     3215    39    10    29    30     0     8    6
art_table   32     3556    0     3215     4     0     4     4     0     8    0
art_node    16      882    0      814     1     0     1     1     0     8    0
sysvmsgpl   40       44    0        4     1     0     1     1     0     8    0
semapl     112       37    0       27     1     0     1     1     0     8    0
shmpl      112       64    0        3     2     0     2     2     0     8    0
shmpl: pool(0xffffffff8352aca0:shmpl): free list modified: page 0xfffffd807a1e3000; item ordinal 0; addr 0xfffffd807a1e33f8 (p 0xfffffd807a1e3000); offset 0x0=0x0
shmpl: pool(0xffffffff8352aca0:shmpl): page inconsistency: page 0xfffffd807a1e3000; item ordinal 1; addr 0x3ea85c7b36ef565b
dirhash    1024      23    0        4     3     0     3     3     0     8    0
dino2pl    256     3609    0     1969   104     1   103   103     0     8    0
ffsino     272     3610    0     1969   110     0   110   110     0     8    0
nchpl      144     5487    0     4857    64    40    24    63     0     8    0
uvmvnodes   80     5262    0        0   108     0   108   108     0     8    0
vnodes     216     5262    0        0   293     0   293   293     0     8    0
namei      1024   27285    0    27284    10     9     1     2     0     8    0
percpumem   16      135    0       88     1     0     1     1     0     8    0
kstatmem   264      202    0      176     3     1     2     3     0     8    0
scsiplug    72        1    0        1     1     1     0     1     0     8    0
scxspl     216    49280    0    49279    13    11     2     8     1     8    1
plimitpl   152      500    0      483     1     0     1     1     0     8    0
sigapl     424     2423    0     2351     9     0     9     9     0     8    0
futexpl     64    16924    0    16922     9     8     1     1     0     8    0
knotepl    120      641    0        0    17     0    17    17     0     8    0
kqueuepl   216      626    0      617    18    17     1     5     0     8    0
pipepl     320      508    0      481    10     7     3     8     0     8    0
fdescpl    496     2383    0     2351     9     4     5     5     0     8    0
filepl     152    14120    0    13876    47    36    11    20     0     8    0
lockfpl    104      721    0      718     4     3     1     4     0     8    0
lockfspl    48      187    0      184     1     0     1     1     0     8    0
sessionpl  144       96    0       87     1     0     1     1     0     8    0
pgrppl      48      194    0      177     1     0     1     1     0     8    0
ucredpl    104     2857    0     2844     1     0     1     1     0     8    0
zombiepl   144     2637    0     2637     3     2     1     1     0     8    1
processpl  1160    2423    0     2351     6     0     6     6     0     8    0
procpl     648     4446    0     4365     9     1     8     8     0     8    0
srpgc       96        8    0        8     3     3     0     1     0     8    0
sosppl     168        7    0        7     5     5     0     1     0     8    0
sockpl     664     3503    0     3475    43    39     4    10     0     8    1
mcl64k     65536      3    0        0     1     0     1     1     0     8    0
mcl16k     16384      3    0        0     1     0     1     1     0     8    0
mcl12k     12288      2    0        0     1     0     1     1     0     8    0
mcl9k      9216       2    0        0     1     0     1     1     0     8    0
mcl8k      8192       5    0        0     1     0     1     1     0     8    0
mcl4k      4096       4    0        0     1     0     1     1     0     8    0
mcl2k      2048     240    0        0    28     1    27    28     0     8    0
mtagpl      96       13    0        0     1     0     1     1     0     8    0
mbufpl     256      533    0        0    32     0    32    32     0     8    0
bufpl      280     9392    0     2208   514     0   514   514     0     8    0
anonpl      24   384281    0   375630   122    61    61    86     0   185    8
amapchunkpl 152   59302    0    58773    62    27    35    37     0   158   12
amappl16   200     7428    0     7160    67    52    15    23     0     8    0
amappl15   192       27    0       27     1     1     0     1     0     8    0
amappl14   184      260    0      248     1     0     1     1     0     8    0
amappl13   176       12    0       12     2     2     0     1     0     8    0
amappl12   168     4100    0     4070     4     2     2     3     0     8    0
amappl11   160       53    0       39     1     0     1     1     0     8    0
amappl10   152       10    0       10     1     1     0     1     0     8    0
amappl9    144      142    0      142     1     1     0     1     0     8    0
amappl8    136       29    0       26     1     0     1     1     0     8    0
amappl7    128      244    0      231     1     0     1     1     0     8    0
amappl6    120      848    0      847     1     0     1     1     0     8    0
amappl5    112      421    0      409     1     0     1     1     0     8    0
amappl4    104      524    0      506     1     0     1     1     0     8    0
amappl3     96    11452    0    11349     4     0     4     4     0     8    0
amappl2     88     1655    0     1585     2     0     2     2     0     8    0
amappl1     80    18769    0    18216    16     2    14    14     0     8    0
amappl      88    17588    0    17421     5     0     5     5     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       66    0        2     2     0     2     2     0     8    0
uaddrrnd    24     2383    0     2351     1     0     1     1     0     8    0
uaddrbest   32        2    0        0     1     0     1     1     0     8    0
uaddr       24     2383    0     2351     1     0     1     1     0     8    0
vmmpekpl   168    21095    0    21034     4     0     4     4     0     8    0
vmmpepl    168   155222    0   153124   137    45    92   103     0   357    0
vmsppl     440     2382    0     2351     6     2     4     5     0     8    0
rwobjpl     56    49983    0    43495    96     4    92    92     0     8    0
pdppl      4096    4773    0     4702   190   115    75    85     0     8    4
pvpl        32    33255    0        0   270     1   269   269     0   265    0
pmappl     248     2382    0     2351     3     0     3     3     0     8    0
extentpl    40       56    0       38     1     0     1     1     0     8    0
phpool     112      579    0      188    12     0    12    12     0     8    0
ddb{0}> machine ddbcpu 0
Invalid cpu 0
ddb{0}> trace
db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:437
panic(ffffffff830164d3) at panic+0x1e5 sys/kern/subr_prf.c:198
pool_do_get(ffffffff8352aca0,1,ffff80002a1520f8) at pool_do_get+0x59d
pool_get(ffffffff8352aca0,1) at pool_get+0x141
shmget_allocate_segment(ffff8000ffff3970,ffff80002a152350,10e,ffff80002a1522a0) at shmget_allocate_segment+0x1a7
sys_shmget(ffff8000ffff3970,ffff80002a152350,ffff80002a1522a0) at sys_shmget+0x1b2 sys/kern/sysv_shm.c:480
syscall(ffff80002a152350) at syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:179 [inline]
syscall(ffff80002a152350) at syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0xa746971fd10, count: -8
ddb{0}> machine ddbcpu 1
Stopped at      x86_ipi_db+0x27:        addq    $0x8,%rsp
x86_ipi_db(ffff800029b7bff0) at x86_ipi_db+0x27 sys/arch/amd64/amd64/db_interface.c:393
x86_ipi_handler() at x86_ipi_handler+0xd9 sys/arch/amd64/amd64/ipi.c:106
Xresume_lapic_ipi() at Xresume_lapic_ipi+0x27
x86_bus_space_io_read_4(b008,0) at x86_bus_space_io_read_4+0x37 sys/arch/amd64/amd64/bus_space.c:666
acpitimer_delay(1) at acpitimer_delay+0xb7 acpitimer_read sys/dev/acpi/acpitimer.c:146 [inline]
acpitimer_delay(1) at acpitimer_delay+0xb7 sys/dev/acpi/acpitimer.c:120
comcnputc(800,20) at comcnputc+0x29b sys/dev/ic/com.c:1269
cnputc(20) at cnputc+0x61 sys/dev/cons.c:218
db_putchar(72) at db_putchar+0x56d sys/ddb/db_output.c:153
kprintf() at kprintf+0x2aba sys/kern/subr_prf.c:1065
db_printf(ffffffff83086c5e) at db_printf+0x9b
panic(ffffffff830e7b6c) at panic+0x103 sys/kern/subr_prf.c:216
__assert(ffffffff8309ae15,ffffffff82fdf15f,3bb,ffffffff830bc081) at __assert+0x29
uvn_get(fffffd806d1dea20,137000,ffff80003728b8d0,ffff80003728b74c,3,4,f32c7768bd1690db,137000) at uvn_get+0x69b sys/uvm/uvm_vnode.c:954
uvm_fault_lower_lookup(ffff80003728b950,ffff80003728b988,ffff80003728b8d0) at uvm_fault_lower_lookup+0x10e sys/uvm/uvm_fault.c:1128
end trace frame: 0xffff80003728b840, count: 0
ddb{1}> trace
x86_ipi_db(ffff800029b7bff0) at x86_ipi_db+0x27 sys/arch/amd64/amd64/db_interface.c:393
x86_ipi_handler() at x86_ipi_handler+0xd9 sys/arch/amd64/amd64/ipi.c:106
Xresume_lapic_ipi() at Xresume_lapic_ipi+0x27
x86_bus_space_io_read_4(b008,0) at x86_bus_space_io_read_4+0x37 sys/arch/amd64/amd64/bus_space.c:666
acpitimer_delay(1) at acpitimer_delay+0xb7 acpitimer_read sys/dev/acpi/acpitimer.c:146 [inline]
acpitimer_delay(1) at acpitimer_delay+0xb7 sys/dev/acpi/acpitimer.c:120
comcnputc(800,20) at comcnputc+0x29b sys/dev/ic/com.c:1269
cnputc(20) at cnputc+0x61 sys/dev/cons.c:218
db_putchar(72) at db_putchar+0x56d sys/ddb/db_output.c:153
kprintf() at kprintf+0x2aba sys/kern/subr_prf.c:1065
db_printf(ffffffff83086c5e) at db_printf+0x9b
panic(ffffffff830e7b6c) at panic+0x103 sys/kern/subr_prf.c:216
__assert(ffffffff8309ae15,ffffffff82fdf15f,3bb,ffffffff830bc081) at __assert+0x29
uvn_get(fffffd806d1dea20,137000,ffff80003728b8d0,ffff80003728b74c,3,4,f32c7768bd1690db,137000) at uvn_get+0x69b sys/uvm/uvm_vnode.c:954
uvm_fault_lower_lookup(ffff80003728b950,ffff80003728b988,ffff80003728b8d0) at uvm_fault_lower_lookup+0x10e sys/uvm/uvm_fault.c:1128
uvm_fault_lower(ffff80003728b950,ffff80003728b988,ffff80003728b8d0,0) at uvm_fault_lower+0x74 sys/uvm/uvm_fault.c:1227
uvm_fault(fffffd806b8f46e8,e5c41728000,0,4) at uvm_fault+0x301 sys/uvm/uvm_fault.c:637
upageflttrap(ffff80003728bad0,e5c417284bb) at upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:188
usertrap(ffff80003728bad0) at usertrap+0x2d8 sys/arch/amd64/amd64/trap.c:436
recall_trap() at recall_trap+0x8
end of kernel
end trace frame: 0x77d4cb2ffd20, count: -19

Crashes (1):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2024/09/20 05:14 openbsd 824a3a1adc7b 6f888b75 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore panic: pool_do_get: shmpl free list modified: page ADDR; item addr ADDR; offset 0x0=0x0 != ADDR
* Struck through repros no longer work on HEAD.