login: panic: pool_do_get: shmpl free list modified: page 0xfffffd8068eb4000; item addr 0xfffffd8068eb4d20; offset 0x10=0xdeadbe00
Stopped at db_enter+0x18: addq $0x8,%rsp
TID PID UID PRFLAGS PFLAGS CPU COMMAND
412857 76900 32767 0x10 0 0 syz-executor.1
*469136 76900 32767 0x10 0x4000000 1K syz-executor.1
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398
panic() at panic+0x15c sys/kern/subr_prf.c:208
pool_do_get(ffffffff823739d8,1,ffff800020bff828) at pool_do_get+0x483 sys/kern/subr_pool.c:744
pool_get() at pool_get+0xeb sys/kern/subr_pool.c:581
shmget_allocate_segment(ffff800020b38e28,ffff800020bff9c8,0,ffff800020bffa30) at shmget_allocate_segment+0x15e sys/kern/sysv_shm.c:409
sys_shmget(ffff800020b38e28,ffff800020bff9c8,ffff800020bffa30) at sys_shmget+0x13f sys/kern/sysv_shm.c:472
syscall(ffff800020bffaa0) at syscall+0x552 mi_syscall sys/sys/syscall_mi.h:99 [inline]
syscall(ffff800020bffaa0) at syscall+0x552 sys/arch/amd64/amd64/trap.c:574
Xsyscall(6,0,fffffffffffffff4,0,4,f7f951d1010) at Xsyscall+0x128
end of kernel
end trace frame: 0x372, count: 7
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ddb{1}>
ddb{1}> set $lines = 0
ddb{1}> set $maxwidth = 0
ddb{1}> show panic
pool_do_get: shmpl free list modified: page 0xfffffd8068eb4000; item addr 0xfffffd8068eb4d20; offset 0x10=0xdeadbe00
ddb{1}> trace
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398
panic() at panic+0x15c sys/kern/subr_prf.c:208
pool_do_get(ffffffff823739d8,1,ffff800020bff828) at pool_do_get+0x483 sys/kern/subr_pool.c:744
pool_get() at pool_get+0xeb sys/kern/subr_pool.c:581
shmget_allocate_segment(ffff800020b38e28,ffff800020bff9c8,0,ffff800020bffa30) at shmget_allocate_segment+0x15e sys/kern/sysv_shm.c:409
sys_shmget(ffff800020b38e28,ffff800020bff9c8,ffff800020bffa30) at sys_shmget+0x13f sys/kern/sysv_shm.c:472
syscall(ffff800020bffaa0) at syscall+0x552 mi_syscall sys/sys/syscall_mi.h:99 [inline]
syscall(ffff800020bffaa0) at syscall+0x552 sys/arch/amd64/amd64/trap.c:574
Xsyscall(6,0,fffffffffffffff4,0,4,f7f951d1010) at Xsyscall+0x128
end of kernel
end trace frame: 0x372, count: -8
ddb{1}> show registers
rdi 0xffffffff814a52b7 db_enter+0x17
rsi 0x30b2 __ALIGN_SIZE+0x20b2
rbp 0xffff800020bff670
rbx 0xffff800020bff720
rdx 0x30b3 __ALIGN_SIZE+0x20b3
rcx 0xffff800003fad000
rax 0xffff800003fad000
r8 0xffffffff81d7af63 kprintf+0x173
r9 0x1
r10 0x25
r11 0xbbd2ddbd4fa9a5a9
r12 0x3000000008
r13 0xffff800020bff680
r14 0x100
r15 0x1
rip 0xffffffff814a52b8 db_enter+0x18
cs 0x8
rflags 0x246
rsp 0xffff800020bff660
ss 0x10
db_enter+0x18: addq $0x8,%rsp
ddb{1}> show proc
PROC (syz-executor.1) pid=469136 stat=onproc
flags process=10<SUGID> proc=4000000<THREAD>
pri=73, usrpri=73, nice=20
forw=0xffffffffffffffff, list=0xffff800020b39080,0xffff800020b39798
process=0xffff800020b8c360 user=0xffff800020bfa000, vmspace=0xfffffd807effe870
estcpu=23, cpticks=1, pctcpu=0.1
user=0, sys=1, intr=0
ddb{1}> ps
PID TID PPID UID S FLAGS WAIT COMMAND
76900 412857 38572 32767 7 0x10 syz-executor.1
*76900 469136 38572 32767 7 0x4000010 syz-executor.1
76900 276850 38572 32767 3 0x4000090 fsleep syz-executor.1
76900 165427 38572 32767 3 0x4000090 fsleep syz-executor.1
76900 217640 38572 32767 3 0x4000090 fsleep syz-executor.1
38572 186283 23453 32767 3 0x90 nanosleep syz-executor.1
23453 69795 99601 0 3 0x82 wait syz-executor.1
18391 478462 53922 32767 3 0x90 piperd syz-executor.0
53922 85593 99601 0 3 0x82 wait syz-executor.0
25451 324780 0 0 3 0x14200 bored sosplice
99601 393706 14831 0 3 0x82 thrsleep syz-fuzzer
99601 456395 14831 0 3 0x4000082 thrsleep syz-fuzzer
99601 220563 14831 0 3 0x4000082 thrsleep syz-fuzzer
99601 493301 14831 0 3 0x4000082 thrsleep syz-fuzzer
99601 53932 14831 0 3 0x4000082 thrsleep syz-fuzzer
99601 318201 14831 0 3 0x4000082 thrsleep syz-fuzzer
99601 334644 14831 0 3 0x4000082 thrsleep syz-fuzzer
99601 419334 14831 0 3 0x4000082 thrsleep syz-fuzzer
99601 405277 14831 0 3 0x4000082 thrsleep syz-fuzzer
99601 500742 14831 0 3 0x4000082 kqread syz-fuzzer
14831 40917 27560 0 3 0x10008a pause ksh
27560 93009 49040 0 3 0x92 select sshd
58326 5747 1 0 3 0x100083 ttyin getty
49040 282614 1 0 3 0x80 select sshd
81225 108425 67192 73 3 0x100090 kqread syslogd
67192 421862 1 0 3 0x100082 netio syslogd
86036 369742 1 77 3 0x100090 poll dhclient
69066 407638 1 0 3 0x80 poll dhclient
24985 280985 0 0 3 0x14200 pgzero zerothread
89853 55897 0 0 3 0x14200 aiodoned aiodoned
74523 449829 0 0 3 0x14200 syncer update
61607 481607 0 0 3 0x14200 cleaner cleaner
17934 180726 0 0 3 0x14200 reaper reaper
69451 209429 0 0 3 0x14200 pgdaemon pagedaemon
50788 60740 0 0 3 0x14200 bored crynlk
76608 227676 0 0 3 0x14200 bored crypto
25939 380011 0 0 3 0x40014200 acpi0 acpi0
23089 128861 0 0 3 0x40014200 idle1
27456 19515 0 0 3 0x14200 bored softnet
70352 39460 0 0 3 0x14200 bored systqmp
33515 353700 0 0 3 0x14200 bored systq
80278 328683 0 0 3 0x40014200 bored softclock
5392 193355 0 0 3 0x40014200 idle0
64042 150392 0 0 3 0x14200 bored smr
1 30518 0 0 3 0x82 wait init
0 0 -1 0 3 0x10200 scheduler swapper
ddb{1}> show all locks
CPU 1:
exclusive mutex shmpl r = 0 (0xffffffff823739e8)
#0 witness_lock+0x52e sys/kern/subr_witness.c:1161
#1 mtx_enter_try+0x102
#2 mtx_enter+0x4b sys/kern/kern_lock.c:266
#3 pool_get+0xbf sys/kern/subr_pool.c:578
#4 shmget_allocate_segment+0x15e sys/kern/sysv_shm.c:409
#5 sys_shmget+0x13f sys/kern/sysv_shm.c:472
#6 syscall+0x552 mi_syscall sys/sys/syscall_mi.h:99 [inline]
#6 syscall+0x552 sys/arch/amd64/amd64/trap.c:574
#7 Xsyscall+0x128
Process 76900 (syz-executor.1) thread 0xffff800020b38e28 (469136)
exclusive kernel_lock &kernel_lock r = 0 (0xffffffff8234ae90)
#0 witness_lock+0x52e sys/kern/subr_witness.c:1161
#1 syscall+0x43a mi_syscall sys/sys/syscall_mi.h:91 [inline]
#1 syscall+0x43a sys/arch/amd64/amd64/trap.c:574
#2 Xsyscall+0x128
exclusive mutex shmpl r = 0 (0xffffffff823739e8)
#0 witness_lock+0x52e sys/kern/subr_witness.c:1161
#1 mtx_enter_try+0x102
#2 mtx_enter+0x4b sys/kern/kern_lock.c:266
#3 pool_get+0xbf sys/kern/subr_pool.c:578
#4 shmget_allocate_segment+0x15e sys/kern/sysv_shm.c:409
#5 sys_shmget+0x13f sys/kern/sysv_shm.c:472
#6 syscall+0x552 mi_syscall sys/sys/syscall_mi.h:99 [inline]
#6 syscall+0x552 sys/arch/amd64/amd64/trap.c:574
#7 Xsyscall+0x128
ddb{1}> show malloc
Type InUse MemUse HighUse Limit Requests Type Lim Kern Lim
devbuf 9459 6321K 6321K 78643K 10616 0 0
pcb 23 9K 11K 78643K 397 0 0
rtable 105 3K 3K 78643K 812 0 0
ifaddr 34 10K 10K 78643K 120 0 0
counters 39 33K 33K 78643K 39 0 0
ioctlops 0 0K 2K 78643K 37 0 0
iov 0 0K 24K 78643K 91 0 0
mount 1 1K 1K 78643K 1 0 0
vnodes 1200 75K 75K 78643K 1584 0 0
UFS quota 1 32K 32K 78643K 1 0 0
UFS mount 5 36K 36K 78643K 5 0 0
shm 3 5K 5K 78643K 11 0 0
VM map 2 1K 1K 78643K 2 0 0
sem 12 0K 0K 78643K 123 0 0
dirhash 12 2K 2K 78643K 12 0 0
ACPI 1808 196K 290K 78643K 12628 0 0
file desc 7 21K 33K 78643K 727 0 0
sigio 0 0K 0K 78643K 10 0 0
proc 41 38K 70K 78643K 892 0 0
subproc 68 69634K 69634K 78643K 544 0 0
NFS srvsock 1 0K 0K 78643K 1 0 0
NFS daemon 1 16K 16K 78643K 1 0 0
ip_moptions 0 0K 0K 78643K 82 0 0
in_multi 33 2K 2K 78643K 199 0 0
ether_multi 1 0K 0K 78643K 4 0 0
ISOFS mount 1 32K 32K 78643K 1 0 0
MSDOSFS mount 1 16K 16K 78643K 1 0 0
ttys 54 238K 238K 78643K 54 0 0
exec 0 0K 1K 78643K 403 0 0
pagedep 1 8K 8K 78643K 1 0 0
inodedep 1 32K 32K 78643K 1 0 0
newblk 1 0K 0K 78643K 1 0 0
VM swap 7 26K 26K 78643K 7 0 0
UVM amap 88 21K 22K 78643K 3123 0 0
UVM aobj 33 2K 2K 78643K 39 0 0
memdesc 1 4K 4K 78643K 1 0 0
crypto data 1 1K 1K 78643K 1 0 0
ip6_options 0 0K 0K 78643K 37 0 0
NDP 5 0K 0K 78643K 51 0 0
temp 112 2724K 2789K 78643K 6088 0 0
kqueue 0 0K 0K 78643K 5 0 0
SYN cache 2 16K 16K 78643K 2 0 0
ddb{1}> show all pools
Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle
arp 64 34 0 28 1 0 1 1 0 8 0
inpcbpl 280 365 0 357 1 0 1 1 0 8 0
plimitpl 152 79 0 70 1 0 1 1 0 8 0
plcache 128 20 0 0 1 0 1 1 0 8 0
rtentry 112 199 0 155 2 0 2 2 0 8 0
syncache 264 4 0 4 1 1 0 1 0 8 0
tcpcb 544 137 0 133 1 0 1 1 0 8 0
nd6 48 48 0 42 1 0 1 1 0 8 0
art_heap8 4096 1 0 0 1 0 1 1 0 8 0
art_heap4 256 807 0 616 12 0 12 12 0 8 0
art_table 32 808 0 616 2 0 2 2 0 8 0
art_node 16 198 0 158 1 0 1 1 0 8 0
sysvmsgpl 40 9 0 7 3 2 1 1 0 8 0
semapl 112 121 0 111 1 0 1 1 0 8 0
shmpl 112 37 0 6 1 0 1 1 0 8 0
shmpl: pool(0xffffffff823739d8:shmpl): page inconsistency: page 0xfffffd8068eb4000; item ordinal 0; addr 0x3d0263dc7f14e549
dirhash 1024 17 0 0 3 0 3 3 0 8 0
dino1pl 128 2166 0 741 47 0 47 47 0 8 0
ffsino 272 2166 0 741 96 0 96 96 0 8 0
nchpl 144 3213 0 1589 61 0 61 61 0 8 0
uvmvnodes 72 2447 0 0 45 0 45 45 0 8 0
vnodes 200 2447 0 0 129 0 129 129 0 8 0
namei 1024 10636 0 10636 2 1 1 1 0 8 1
percpumem 16 30 0 0 1 0 1 1 0 8 0
scxspl 192 9073 0 9073 12 8 4 6 0 8 4
sigapl 432 855 0 840 3 1 2 3 0 8 0
futexpl 56 6553 0 6550 2 1 1 1 0 8 0
knotepl 112 448 0 429 1 0 1 1 0 8 0
kqueuepl 104 110 0 108 1 0 1 1 0 8 0
pipepl 112 594 0 575 3 2 1 2 0 8 0
fdescpl 488 856 0 840 3 0 3 3 0 8 1
filepl 152 5134 0 5035 9 4 5 7 0 8 1
lockfpl 104 171 0 171 3 2 1 1 0 8 1
lockfspl 32 55 0 55 3 2 1 1 0 8 1
sessionpl 112 31 0 21 1 0 1 1 0 8 0
pgrppl 48 38 0 28 1 0 1 1 0 8 0
ucredpl 96 1369 0 1360 1 0 1 1 0 8 0
zombiepl 144 840 0 840 2 1 1 1 0 8 1
processpl 840 872 0 840 4 0 4 4 0 8 0
procpl 600 1921 0 1876 4 0 4 4 0 8 0
srpgc 64 84 0 84 2 2 0 1 0 8 0
sosppl 128 7 0 7 3 2 1 1 0 8 1
sockpl 384 765 0 747 5 2 3 4 0 8 0
mcl64k 65536 14 0 0 2 0 2 2 0 8 0
mcl16k 16384 5 0 0 1 0 1 1 0 8 0
mcl12k 12288 7 0 0 1 0 1 1 0 8 0
mcl9k 9216 3 0 0 1 0 1 1 0 8 0
mcl8k 8192 7 0 0 1 0 1 1 0 8 0
mcl4k 4096 10 0 0 2 0 2 2 0 8 0
mcl2k2 2112 1 0 0 1 0 1 1 0 8 0
mcl2k 2048 128 0 0 15 0 15 15 0 8 0
mtagpl 80 1 0 0 1 0 1 1 0 8 0
mbufpl 256 199 0 0 12 0 12 12 0 8 0
bufpl 256 6953 0 1139 364 0 364 364 0 8 0
anonpl 16 89359 0 81945 55 18 37 43 0 125 4
amapchunkpl 152 6214 0 6120 11 2 9 9 0 158 4
amappl16 192 3175 0 2798 41 19 22 31 0 8 3
amappl15 184 110 0 108 2 1 1 1 0 8 0
amappl14 176 297 0 292 2 1 1 1 0 8 0
amappl13 168 16 0 15 1 0 1 1 0 8 0
amappl12 160 86 0 85 1 0 1 1 0 8 0
amappl11 152 157 0 143 1 0 1 1 0 8 0
amappl10 144 170 0 165 1 0 1 1 0 8 0
amappl9 136 750 0 747 1 0 1 1 0 8 0
amappl8 128 283 0 263 1 0 1 1 0 8 0
amappl7 120 157 0 149 1 0 1 1 0 8 0
amappl6 112 149 0 141 1 0 1 1 0 8 0
amappl5 104 300 0 288 1 0 1 1 0 8 0
amappl4 96 1018 0 985 2 1 1 2 0 8 0
amappl3 88 280 0 274 1 0 1 1 0 8 0
amappl2 80 5111 0 5056 2 0 2 2 0 8 0
amappl1 72 31166 0 30716 23 13 10 19 0 8 0
amappl 72 2376 0 2338 1 0 1 1 0 75 0
dma4096 4096 1 0 1 1 1 0 1 0 8 0
dma256 256 6 0 6 1 1 0 1 0 8 0
dma64 64 259 0 259 1 1 0 1 0 8 0
dma32 32 7 0 7 1 1 0 1 0 8 0
dma16 16 17 0 17 1 1 0 1 0 8 0
aobjpl 64 38 0 6 1 0 1 1 0 8 0
uaddrrnd 24 856 0 840 1 0 1 1 0 8 0
uaddrbest 32 2 0 0 1 0 1 1 0 8 0
uaddr 24 856 0 840 1 0 1 1 0 8 0
vmmpekpl 168 10681 0 10659 2 0 2 2 0 8 0
vmmpepl 168 101161 0 99719 89 21 68 73 0 357 0
vmsppl 360 855 0 840 2 0 2 2 0 8 0
pdppl 4096 1720 0 1680 6 0 6 6 0 8 1
pvpl 32 288282 0 277201 152 44 108 115 0 265 18
pmappl 232 855 0 840 2 1 1 2 0 8 0
extentpl 40 39 0 25 1 0 1 1 0 8 0
phpool 112 520 0 3 15 0 15 15 0 8 0