KASAN: invalid memory access in doktrace
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syzbot
Jul 15, 2026, 8:45:34 AM (yesterday) Jul 15
to syzkaller-o...@googlegroups.com
Hello,
syzbot found the following issue on:
HEAD commit: 105dba7a2dcb kasan: pool describe: only the owning pool ma..
git tree: https://github.com/blackgnezdo/openbsd-src.git syzbot-kasan
console output: https://syzkaller.appspot.com/x/log.txt?x=15148c32580000
kernel config: https://syzkaller.appspot.com/x/.config?x=85e25e37d09e1b88
dashboard link: https://syzkaller.appspot.com/bug?extid=ebaa42539df7a97a59b4
Unfortunately, I don't have any reproducer for this issue yet.
Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/913e490bbdf4/disk-105dba7a.raw.xz
bsd.gdb: https://storage.googleapis.com/syzbot-assets/ef2a75709cda/bsd-105dba7a.gdb.xz
kernel image: https://storage.googleapis.com/syzbot-assets/f7604cbf7882/kernel-105dba7a.xz
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+ebaa42...@syzkaller.appspotmail.com
panic: Caught invalid memory access at ffff800045ff1890 size 8 op 0
Stopped at db_enter+0x17: popq %rbp
TID PID UID PRFLAGS PFLAGS CPU COMMAND
250677 16801 0 0 0 0 syz-executor
*467366 19180 0 0 0x4000000 1K syz-executor
db_enter() at db_enter+0x17 sys/arch/amd64/amd64/db_interface.c:457
panic(ffffffff84632b4f) at panic+0x270 sys/kern/subr_prf.c:198
__asan_load8_noabort(ffff800045ff1890) at __asan_load8_noabort+0xde kasan_shadow_check sys/kern/subr_kasan.c:-1 [inline]
__asan_load8_noabort(ffff800045ff1890) at __asan_load8_noabort+0xde sys/kern/subr_kasan.c:1099
doktrace(ffff800001c7a968,4,814,0,ffff800045ffca78) at doktrace+0x9ff ktrsetchildren sys/kern/kern_ktrace.c:602 [inline]
doktrace(ffff800001c7a968,4,814,0,ffff800045ffca78) at doktrace+0x9ff sys/kern/kern_ktrace.c:518
sys_ktrace(ffff800045ffca78,ffff80003bb862d0,ffff80003bb86240) at sys_ktrace+0x1f6 sys/kern/kern_ktrace.c:559
syscall(ffff80003bb862d0) at syscall+0x1089 mi_syscall sys/sys/syscall_mi.h:176 [inline]
syscall(ffff80003bb862d0) at syscall+0x1089 sys/arch/amd64/amd64/trap.c:783
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0xf88312a7260, count: 8
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: Caught invalid memory access at ffff800045ff1890 size 8 op 0
ddb{1}> show kasan
KASAN: invalid read of 8 bytes at 0xffff800045ff1890 from pc 0xffffffff819ba03f
KASAN: first bad byte at 0xffff800045ff1890 (+0); shadow 0xfd: pool use-after-free (or unallocated item)
KASAN: 0xffff800045ff1890 is 96 bytes inside the 1232-byte item [0xffff800045ff1830..0xffff800045ff1d00) in pool 'processpl'
KASAN: allocated at:
#0 pool_get+0x770 sys/kern/subr_pool.c:733
#1 process_new+0x47 sys/kern/kern_fork.c:221
#2 fork1+0x533 sys/kern/kern_fork.c:408
#3 kthread_create+0xa8 sys/kern/kern_kthread.c:61
#4 sys_acct+0x35e acct_start sys/kern/kern_acct.c:300 [inline]
#4 sys_acct+0x35e sys/kern/kern_acct.c:151
#5 syscall+0x1089 mi_syscall sys/sys/syscall_mi.h:176 [inline]
#5 syscall+0x1089 sys/arch/amd64/amd64/trap.c:783
#6 Xsyscall+0x128
KASAN: freed at:
#0 pool_put+0x79 sys/kern/subr_pool.c:918
#1 process_zap+0x457 sys/kern/kern_exit.c:898
#2 reaper+0x3e6 sys/kern/kern_exit.c:525
#3 proc_trampoline+0x10
KASAN: pc: doktrace+0x9ff
KASAN: call trace:
#0 __asan_load8_noabort+0xbd kasan_shadow_check sys/kern/subr_kasan.c:-1 [inline]
#0 __asan_load8_noabort+0xbd sys/kern/subr_kasan.c:1099
#1 doktrace+0x9ff ktrsetchildren sys/kern/kern_ktrace.c:602 [inline]
#1 doktrace+0x9ff sys/kern/kern_ktrace.c:518
#2 sys_ktrace+0x1f6 sys/kern/kern_ktrace.c:559
#3 syscall+0x1089 mi_syscall sys/sys/syscall_mi.h:176 [inline]
#3 syscall+0x1089 sys/arch/amd64/amd64/trap.c:783
#4 Xsyscall+0x128
KASAN: shadow of 0xffff800045ff1780..0xffff800045ff1a00 (1 cell = 8 bytes):
0xffff800045ff1780: fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd
0xffff800045ff1800: fd fd fd fd fd fd 08 08 fd fd fd fd fd fd fd fd
>0xffff800045ff1880: fd fd[fd]fd fd fd fd fd fd fd fd fd fd fd fd fd
0xffff800045ff1900: fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd
0xffff800045ff1980: fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd
KASAN: legend: 00 valid; 01..07 partial; fb malloc redzone; fc malloc freed; fd pool freed; fe kmem; fa global; f1..f4/f8 stack/scope
ddb{1}> trace
db_enter() at db_enter+0x17 sys/arch/amd64/amd64/db_interface.c:457
panic(ffffffff84632b4f) at panic+0x270 sys/kern/subr_prf.c:198
__asan_load8_noabort(ffff800045ff1890) at __asan_load8_noabort+0xde kasan_shadow_check sys/kern/subr_kasan.c:-1 [inline]
__asan_load8_noabort(ffff800045ff1890) at __asan_load8_noabort+0xde sys/kern/subr_kasan.c:1099
doktrace(ffff800001c7a968,4,814,0,ffff800045ffca78) at doktrace+0x9ff ktrsetchildren sys/kern/kern_ktrace.c:602 [inline]
doktrace(ffff800001c7a968,4,814,0,ffff800045ffca78) at doktrace+0x9ff sys/kern/kern_ktrace.c:518
sys_ktrace(ffff800045ffca78,ffff80003bb862d0,ffff80003bb86240) at sys_ktrace+0x1f6 sys/kern/kern_ktrace.c:559
syscall(ffff80003bb862d0) at syscall+0x1089 mi_syscall sys/sys/syscall_mi.h:176 [inline]
syscall(ffff80003bb862d0) at syscall+0x1089 sys/arch/amd64/amd64/trap.c:783
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0xf88312a7260, count: -7
ddb{1}> show registers
rdi 0
rsi 0x1
rbp 0xffff80003bb85cd0
rbx 0xffff80003bb85d40
rdx 0
rcx 0xffff800028fe3ff0
rax 0xffff80000015cb00
r8 0x101010101010101
r9 0x8080808080808080
r10 0xffff80003bb85ab8
r11 0xffffffff8416f5d0 x86_bus_space_io_read_1
r12 0xffffffff84632b4f .str.28+0x9b28f
r13 0xffff800028fe4c08
r14 0xffff800028fe4e07
r15 0x1
rip 0xffffffff82a38477 db_enter+0x17
cs 0x8
rflags 0x246
rsp 0xffff80003bb85cd0
ss 0x10
db_enter+0x17: popq %rbp
ddb{1}> show proc
PROC (syz-executor) tid=467366 pid=19180 tcnt=3 stat=onproc
flags process=0 proc=4000000<THREAD>
runpri=17, usrpri=86, slppri=17, nice=20
wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0
forw=0xffffffffffffffff, list=0xffff800045ff5248,0xffff800045ff47f8
process=0xffff800045ff09c0 user=0xffff80003bb7b000, vmspace=0xffff800001c45018
estcpu=36, cpticks=22, pctcpu=0.0, user=1, sys=21, intr=0
ddb{1}> ps
PID TID PPID UID S FLAGS WAIT COMMAND
16801 250677 20077 0 7 0 syz-executor
51124 109213 81759 0 2 0 syz-executor
51124 441355 81759 0 3 0x4000080 fsleep syz-executor
43604 372995 23696 0 2 0 syz-executor
43604 507363 23696 0 3 0x4000080 kqread syz-executor
43604 64197 23696 0 3 0x4000080 fsleep syz-executor
43604 36802 23696 0 3 0x4000080 fsleep syz-executor
63243 334104 10003 0 2 0 syz-executor
63243 233890 10003 0 3 0x4000080 fsleep syz-executor
92615 58623 24817 0 2 0 syz-executor
92615 47178 24817 0 3 0x4000080 fsleep syz-executor
18125 436332 83422 0 2 0 syz-executor
18125 171357 83422 0 2 0x4000000 syz-executor
19180 170435 35247 0 2 0 syz-executor
*19180 467366 35247 0 7 0x4000000 syz-executor
19180 352268 35247 0 3 0x4000080 fsleep syz-executor
97963 95515 36401 0 2 0x82000 syz-executor
97963 456333 36401 0 3 0x4002000 suspend syz-executor
24817 384273 49210 0 3 0x82 nanoslp syz-executor
36401 508411 49210 0 3 0x82 nanoslp syz-executor
81759 341247 49210 0 3 0x82 nanoslp syz-executor
10003 299985 49210 0 3 0x82 nanoslp syz-executor
35247 284380 49210 0 3 0x82 nanoslp syz-executor
83422 185596 49210 0 3 0x82 nanoslp syz-executor
20077 342533 49210 0 3 0x82 nanoslp syz-executor
23696 344988 49210 0 3 0x82 nanoslp syz-executor
49210 206838 33930 0 3 0x82 kqread syz-executor
33930 306008 90938 0 3 0x10008a sigsusp ksh
90938 322547 85234 0 3 0x98 kqread sshd-session
85234 194933 25327 0 3 0x92 kqread sshd-session
9047 482397 1 0 3 0x100083 ttyin getty
25327 43187 1 0 3 0x88 kqread sshd
16980 205411 34135 74 3 0x1100092 bpf pflogd
34135 212732 1 0 3 0x80 sbwait pflogd
62390 195220 39493 73 3 0x1100090 kqread syslogd
39493 451317 1 0 3 0x100082 sbwait syslogd
33018 513846 1 0 3 0x100080 kqread resolvd
82115 271981 50104 77 3 0x100092 kqread dhcpleased
22064 57387 50104 77 3 0x100092 kqread dhcpleased
50104 253364 1 0 3 0x80 kqread dhcpleased
44104 240036 0 0 3 0x14200 bored smr
66407 241123 0 0 2 0x14200 zerothread
82500 262331 0 0 3 0x14200 aiodoned aiodoned
13097 417030 0 0 3 0x14200 syncer update
9293 381704 0 0 3 0x14200 cleaner cleaner
84932 127642 0 0 3 0x14200 reaper reaper
61323 163687 0 0 3 0x14200 pgdaemon pagedaemon
53154 206343 0 0 3 0x14200 bored viomb
69525 119751 0 0 3 0x40014200 acpi0 acpi0
26424 193184 0 0 3 0x40014200 idle1
62912 191502 0 0 3 0x14200 bored softnet1
40970 369972 0 0 3 0x14200 bored softnet0
29400 480221 0 0 3 0x14200 bored systqmp
19531 454362 0 0 3 0x14200 bored systq
74066 203402 0 0 3 0x14200 tmoslp softclockmp
11226 185810 0 0 3 0x40014200 tmoslp softclock
67183 273061 0 0 3 0x40014200 idle0
1 457268 0 0 3 0x82 wait init
0 0 -1 0 3 0x10010200 scheduler swapper
ddb{1}> show all locks
Process 19180 (syz-executor) thread 0xffff800045ffca78 (467366)
exclusive kernel_lock &kernel_lock r = 0 (0xffffffff8542a300)
#0 witness_lock+0x632 stacktrace_save sys/sys/stacktrace.h:37 [inline]
#0 witness_lock+0x632 sys/kern/subr_witness.c:1160
#1 __mp_acquire_count+0x48 sys/kern/kern_lock.c:-1
#2 sleep_finish+0x423 sys/kern/kern_synch.c:369
#3 biowait+0xe6 sys/kern/vfs_bio.c:1110
#4 bwrite+0x4e1 sys/kern/vfs_bio.c:625
#5 ffs_update+0x619 sys/ufs/ffs/ffs_inode.c:111
#6 ffs_truncate+0x12f0 sys/ufs/ffs/ffs_inode.c:-1
#7 ufs_inactive+0x2cb sys/ufs/ufs/ufs_inode.c:84
#8 VOP_INACTIVE+0x1bb sys/kern/vfs_vops.c:498
#9 vrele+0x16a sys/kern/vfs_subr.c:845
#10 ktrsettrace+0x16c sys/kern/kern_ktrace.c:122
#11 ktrops+0x338 sys/kern/kern_ktrace.c:574
#12 doktrace+0x9e8 ktrsetchildren sys/kern/kern_ktrace.c:596 [inline]
#12 doktrace+0x9e8 sys/kern/kern_ktrace.c:518
#13 sys_ktrace+0x1f6 sys/kern/kern_ktrace.c:559
#14 syscall+0x1089 mi_syscall sys/sys/syscall_mi.h:176 [inline]
#14 syscall+0x1089 sys/arch/amd64/amd64/trap.c:783
#15 Xsyscall+0x128
ddb{1}> show malloc
Type InUse MemUse HighUse Limit Requests Type Lim
devbuf 11064 12324K 12324K 166960K 12190 0
pcb 17 28K 33K 166960K 105 0
rtable 239 12K 13K 166960K 353 0
pf 34 22K 24K 166960K 47 0
ifaddr 43 12K 12K 166960K 45 0
ifgroup 55 2K 2K 166960K 55 0
sysctl 1 1K 13K 166960K 5 0
counters 70 42K 42K 166960K 70 0
ioctlops 0 0K 4K 166960K 1526 0
iov 0 0K 20K 166960K 10 0
mount 1 1K 1K 166960K 1 0
log 0 0K 0K 166960K 4 0
vnodes 1361 87K 87K 166960K 1483 0
UFS quota 1 36K 36K 166960K 1 0
UFS mount 5 44K 44K 166960K 5 0
shm 2 2K 10K 166960K 9 0
VM map 2 1K 1K 166960K 2 0
sem 12 0K 0K 166960K 13 0
dirhash 12 2K 2K 166960K 12 0
ACPI 1734 201K 292K 166960K 11964 0
file desc 18 65K 93K 166960K 217 0
proc 74 145K 177K 166960K 573 0
subproc 72 9K 9K 166960K 72 0
NFS srvsock 1 0K 0K 166960K 1 0
NFS daemon 1 20K 20K 166960K 1 0
in_multi 99 7K 7K 166960K 99 0
ether_multi 1 0K 0K 166960K 1 0
mrt 0 0K 0K 166960K 3 0
ISOFS mount 1 36K 36K 166960K 1 0
MSDOSFS mount 1 20K 20K 166960K 1 0
ttys 49 344K 344K 166960K 49 0
exec 0 0K 2K 166960K 387 0
fusefs mount 1 36K 36K 166960K 1 0
tdb 3 1K 1K 166960K 3 0
VM swap 8 62K 64K 166960K 10 0
UVM amap 239 245K 262K 166960K 3828 0
UVM aobj 12 4K 4K 166960K 12 0
pinsyscall 1067 1752K 1752K 166960K 1376 0
memdesc 1 4K 4K 166960K 1 0
crypto data 1 1K 1K 166960K 1 0
NDP 12 0K 2K 166960K 28 0
temp 76 9172K 9185K 166960K 4711 0
kqueue 14 44K 48K 166960K 42 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
plcache 128 28 0 0 1 0 1 1 0 8 0
rtpcb 120 34 0 31 1 0 1 1 0 8 0
rtentry 176 112 0 1 6 0 6 6 0 8 0
unpcb 144 106 0 86 2 0 2 2 0 8 1
syncache 336 4 0 4 1 0 1 1 0 8 1
tcpcb 736 54 0 48 4 0 4 4 0 8 3
arp 136 19 0 0 1 0 1 1 0 8 0
inpcb 328 197 0 187 7 0 7 7 0 8 6
nd6 152 24 0 0 1 0 1 1 0 8 0
kcovpl 48 8 0 0 1 0 1 1 0 8 0
pffrag 232 1 0 0 1 0 1 1 0 482 0
pffrnode 88 1 0 0 1 0 1 1 0 8 0
pffrent 40 1 0 0 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
pfstitem 24 26 0 0 1 0 1 1 0 8 0
pfstkey 128 26 0 0 1 0 1 1 0 8 0
pfstate 448 26 0 0 3 0 3 3 0 8 0
pfrule 1360 22 0 17 2 1 1 2 0 8 0
art_heap8 4096 1 0 0 1 0 1 1 0 8 0
art_heap4 256 452 0 0 29 0 29 29 0 8 0
art_table 40 453 0 0 5 0 5 5 0 8 0
art_node 32 112 0 11 1 0 1 1 0 8 0
sysvmsgpl 40 1 0 1 1 0 1 1 0 8 1
semapl 72 11 0 1 1 0 1 1 0 8 0
shmpl 112 9 0 0 1 0 1 1 0 8 0
dirhash 1024 17 0 0 3 0 3 3 0 8 0
dino2pl 256 1708 0 234 93 0 93 93 0 8 0
ffsino 296 1708 0 234 114 0 114 114 0 8 0
nchpl 144 2012 0 306 64 0 64 64 0 8 0
vnodes 216 1897 0 0 106 0 106 106 0 8 0
namei 1024 6715 0 6715 2 0 2 2 0 8 2
percpumem 16 51 0 0 1 0 1 1 0 8 0
kstatmem 264 27 0 0 2 0 2 2 0 8 0
scxspl 216 7239 0 7239 2 1 1 2 1 8 1
plimitpl 152 33 0 16 1 0 1 1 0 8 0
sigapl 424 536 0 488 7 0 7 7 0 8 1
knotepl 120 62 0 0 2 0 2 2 0 8 0
kqueuepl 224 54 0 44 1 0 1 1 0 8 0
pipepl 344 140 0 112 3 0 3 3 0 8 0
fdescpl 528 519 0 487 3 0 3 3 0 8 0
filepl 160 2352 0 2062 13 0 13 13 0 8 0
lockfpl 104 38 0 34 1 0 1 1 0 8 0
lockfspl 48 19 0 15 1 0 1 1 0 8 0
sessionpl 144 27 0 18 1 0 1 1 0 8 0
pgrppl 48 35 0 18 1 0 1 1 0 8 0
ucredpl 104 166 0 153 1 0 1 1 0 8 0
zombiepl 144 488 0 488 1 0 1 1 0 8 1
processpl 1232 536 0 488 5 0 5 5 0 8 0
procpl 664 675 0 617 6 0 6 6 0 8 0
sockpl 752 340 0 307 12 0 12 12 0 8 8
mcl64k 65536 3 0 0 1 0 1 1 0 8 0
mcl16k 16384 1 0 0 1 0 1 1 0 8 0
mcl12k 12288 1 0 0 1 0 1 1 0 8 0
mcl8k 8192 2 0 0 1 0 1 1 0 8 0
mcl4k 4096 120 0 0 15 0 15 15 0 8 0
mcl2k 2048 18 0 0 3 0 3 3 0 8 0
mextrefs 64 17 0 0 1 0 1 1 0 8 0
mtagpl 96 3 0 0 1 0 1 1 0 8 0
mbufpl 256 241 0 0 15 0 15 15 0 8 0
bufpl 272 2513 0 138 159 0 159 159 0 8 0
anonpl 32 5309 0 0 43 0 43 43 0 222 0
amapchunkpl 152 10965 0 10468 23 0 23 23 0 158 2
amappl16 200 2070 0 2039 5 3 2 5 0 8 0
amappl15 192 102 0 102 1 1 0 1 0 8 0
amappl14 184 434 0 432 1 0 1 1 0 8 0
amappl13 176 138 0 126 1 0 1 1 0 8 0
amappl12 168 803 0 772 2 0 2 2 0 8 0
amappl11 160 9 0 9 2 1 1 1 0 8 1
amappl10 152 66 0 52 1 0 1 1 0 8 0
amappl9 144 273 0 273 1 1 0 1 0 8 0
amappl8 136 96 0 94 1 0 1 1 0 8 0
amappl7 128 152 0 139 1 0 1 1 0 8 0
amappl6 120 154 0 153 1 0 1 1 0 8 0
amappl5 112 109 0 97 1 0 1 1 0 8 0
amappl4 104 298 0 277 1 0 1 1 0 8 0
amappl3 96 1982 0 1863 4 0 4 4 0 8 0
amappl2 88 545 0 481 2 0 2 2 0 8 0
amappl1 80 10774 0 10172 16 1 15 15 0 8 2
amappl 88 3088 0 2922 4 0 4 4 0 92 0
uvmvnodes 80 101 0 0 3 0 3 3 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 128 253 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 11 0 0 1 0 1 1 0 8 0
uaddrrnd 24 519 0 487 1 0 1 1 0 8 0
uaddrbest 32 2 0 0 1 0 1 1 0 8 0
uaddr 24 519 0 487 1 0 1 1 0 8 0
vmmpekpl 168 6303 0 6272 2 0 2 2 0 8 0
vmmpepl 168 42635 0 40678 87 0 87 87 0 357 0
vmsppl 488 518 0 487 5 0 5 5 0 8 1
rwobjpl 80 15709 0 14658 24 0 24 24 0 8 1
pdppl 4096 1047 0 974 101 28 73 87 0 8 0
pvpl 32 11203 0 0 92 1 91 91 0 265 0
pmappl 256 518 0 487 3 0 3 3 0 8 0
extentpl 40 46 0 28 1 0 1 1 0 8 0
phpool 120 440 0 31 13 0 13 13 0 8 0
ddb{1}> machine ddbcpu 0
Stopped at x86_ipi_db+0x19: leave
x86_ipi_db(ffffffff8521aff0) at x86_ipi_db+0x19 sys/arch/amd64/amd64/db_interface.c:412
x86_ipi_handler() at x86_ipi_handler+0x112 sys/arch/amd64/amd64/ipi.c:106
Xresume_lapic_ipi() at Xresume_lapic_ipi+0x27
__mp_lock(ffffffff85429b00) at __mp_lock+0x283 __mp_lock_spin sys/kern/kern_lock.c:142 [inline]
__mp_lock(ffffffff85429b00) at __mp_lock+0x283 sys/kern/kern_lock.c:173
softintr_dispatch(0) at softintr_dispatch+0x215 sys/kern/kern_softintr.c:83
dosoftint(0) at dosoftint+0x7b sys/arch/amd64/amd64/intr.c:862
Xsoftclock() at Xsoftclock+0x27
__asan_load4_noabort(ffffffff8542a2f8) at __asan_load4_noabort+0x9 sys/kern/subr_kasan.c:1098
__mp_lock(ffffffff85429b00) at __mp_lock+0x27a __mp_lock_spin sys/kern/kern_lock.c:142 [inline]
__mp_lock(ffffffff85429b00) at __mp_lock+0x27a sys/kern/kern_lock.c:173
syscall(ffff80003bb6df70) at syscall+0x1048 mi_syscall sys/sys/syscall_mi.h:175 [inline]
syscall(ffff80003bb6df70) at syscall+0x1048 sys/arch/amd64/amd64/trap.c:783
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7ed200b70f40, count: 4
ddb{0}> trace
x86_ipi_db(ffffffff8521aff0) at x86_ipi_db+0x19 sys/arch/amd64/amd64/db_interface.c:412
x86_ipi_handler() at x86_ipi_handler+0x112 sys/arch/amd64/amd64/ipi.c:106
Xresume_lapic_ipi() at Xresume_lapic_ipi+0x27
__mp_lock(ffffffff85429b00) at __mp_lock+0x283 __mp_lock_spin sys/kern/kern_lock.c:142 [inline]
__mp_lock(ffffffff85429b00) at __mp_lock+0x283 sys/kern/kern_lock.c:173
softintr_dispatch(0) at softintr_dispatch+0x215 sys/kern/kern_softintr.c:83
dosoftint(0) at dosoftint+0x7b sys/arch/amd64/amd64/intr.c:862
Xsoftclock() at Xsoftclock+0x27
__asan_load4_noabort(ffffffff8542a2f8) at __asan_load4_noabort+0x9 sys/kern/subr_kasan.c:1098
__mp_lock(ffffffff85429b00) at __mp_lock+0x27a __mp_lock_spin sys/kern/kern_lock.c:142 [inline]
__mp_lock(ffffffff85429b00) at __mp_lock+0x27a sys/kern/kern_lock.c:173
syscall(ffff80003bb6df70) at syscall+0x1048 mi_syscall sys/sys/syscall_mi.h:175 [inline]
syscall(ffff80003bb6df70) at syscall+0x1048 sys/arch/amd64/amd64/trap.c:783
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7ed200b70f40, count: -11
ddb{0}> machine ddbcpu 1
Stopped at db_enter+0x17: popq %rbp
db_enter() at db_enter+0x17 sys/arch/amd64/amd64/db_interface.c:457
panic(ffffffff84632b4f) at panic+0x270 sys/kern/subr_prf.c:198
__asan_load8_noabort(ffff800045ff1890) at __asan_load8_noabort+0xde kasan_shadow_check sys/kern/subr_kasan.c:-1 [inline]
__asan_load8_noabort(ffff800045ff1890) at __asan_load8_noabort+0xde sys/kern/subr_kasan.c:1099
doktrace(ffff800001c7a968,4,814,0,ffff800045ffca78) at doktrace+0x9ff ktrsetchildren sys/kern/kern_ktrace.c:602 [inline]
doktrace(ffff800001c7a968,4,814,0,ffff800045ffca78) at doktrace+0x9ff sys/kern/kern_ktrace.c:518
sys_ktrace(ffff800045ffca78,ffff80003bb862d0,ffff80003bb86240) at sys_ktrace+0x1f6 sys/kern/kern_ktrace.c:559
syscall(ffff80003bb862d0) at syscall+0x1089 mi_syscall sys/sys/syscall_mi.h:176 [inline]
syscall(ffff80003bb862d0) at syscall+0x1089 sys/arch/amd64/amd64/trap.c:783
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0xf88312a7260, count: 8
ddb{1}> trace
db_enter() at db_enter+0x17 sys/arch/amd64/amd64/db_interface.c:457
panic(ffffffff84632b4f) at panic+0x270 sys/kern/subr_prf.c:198
__asan_load8_noabort(ffff800045ff1890) at __asan_load8_noabort+0xde kasan_shadow_check sys/kern/subr_kasan.c:-1 [inline]
__asan_load8_noabort(ffff800045ff1890) at __asan_load8_noabort+0xde sys/kern/subr_kasan.c:1099
doktrace(ffff800001c7a968,4,814,0,ffff800045ffca78) at doktrace+0x9ff ktrsetchildren sys/kern/kern_ktrace.c:602 [inline]
doktrace(ffff800001c7a968,4,814,0,ffff800045ffca78) at doktrace+0x9ff sys/kern/kern_ktrace.c:518
sys_ktrace(ffff800045ffca78,ffff80003bb862d0,ffff80003bb86240) at sys_ktrace+0x1f6 sys/kern/kern_ktrace.c:559
syscall(ffff80003bb862d0) at syscall+0x1089 mi_syscall sys/sys/syscall_mi.h:176 [inline]
syscall(ffff80003bb862d0) at syscall+0x1089 sys/arch/amd64/amd64/trap.c:783
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0xf88312a7260, count: -7
---
This report is generated by a bot. It may contain errors.
See https://goo.gl/tpsmEJ for more information about syzbot.
syzbot engineers can be reached at syzk...@googlegroups.com.
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If the report is already addressed, let syzbot know by replying with:
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If you want to overwrite report's subsystems, reply with:
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If the report is a duplicate of another one, reply with:
#syz dup: exact-subject-of-another-report
If you want to undo deduplication, reply with:
#syz undup
syzbot found the following issue on:
HEAD commit: 105dba7a2dcb kasan: pool describe: only the owning pool ma..
git tree: https://github.com/blackgnezdo/openbsd-src.git syzbot-kasan
console output: https://syzkaller.appspot.com/x/log.txt?x=15148c32580000
kernel config: https://syzkaller.appspot.com/x/.config?x=85e25e37d09e1b88
dashboard link: https://syzkaller.appspot.com/bug?extid=ebaa42539df7a97a59b4
Unfortunately, I don't have any reproducer for this issue yet.
Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/913e490bbdf4/disk-105dba7a.raw.xz
bsd.gdb: https://storage.googleapis.com/syzbot-assets/ef2a75709cda/bsd-105dba7a.gdb.xz
kernel image: https://storage.googleapis.com/syzbot-assets/f7604cbf7882/kernel-105dba7a.xz
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+ebaa42...@syzkaller.appspotmail.com
panic: Caught invalid memory access at ffff800045ff1890 size 8 op 0
Stopped at db_enter+0x17: popq %rbp
TID PID UID PRFLAGS PFLAGS CPU COMMAND
250677 16801 0 0 0 0 syz-executor
*467366 19180 0 0 0x4000000 1K syz-executor
db_enter() at db_enter+0x17 sys/arch/amd64/amd64/db_interface.c:457
panic(ffffffff84632b4f) at panic+0x270 sys/kern/subr_prf.c:198
__asan_load8_noabort(ffff800045ff1890) at __asan_load8_noabort+0xde kasan_shadow_check sys/kern/subr_kasan.c:-1 [inline]
__asan_load8_noabort(ffff800045ff1890) at __asan_load8_noabort+0xde sys/kern/subr_kasan.c:1099
doktrace(ffff800001c7a968,4,814,0,ffff800045ffca78) at doktrace+0x9ff ktrsetchildren sys/kern/kern_ktrace.c:602 [inline]
doktrace(ffff800001c7a968,4,814,0,ffff800045ffca78) at doktrace+0x9ff sys/kern/kern_ktrace.c:518
sys_ktrace(ffff800045ffca78,ffff80003bb862d0,ffff80003bb86240) at sys_ktrace+0x1f6 sys/kern/kern_ktrace.c:559
syscall(ffff80003bb862d0) at syscall+0x1089 mi_syscall sys/sys/syscall_mi.h:176 [inline]
syscall(ffff80003bb862d0) at syscall+0x1089 sys/arch/amd64/amd64/trap.c:783
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0xf88312a7260, count: 8
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{1}>
ddb{1}> set $lines = 0
ddb{1}> set $maxwidth = 0
ddb{1}> show panic
*cpu1: Caught invalid memory access at ffff800045ff1890 size 8 op 0
ddb{1}> show kasan
KASAN: invalid read of 8 bytes at 0xffff800045ff1890 from pc 0xffffffff819ba03f
KASAN: first bad byte at 0xffff800045ff1890 (+0); shadow 0xfd: pool use-after-free (or unallocated item)
KASAN: 0xffff800045ff1890 is 96 bytes inside the 1232-byte item [0xffff800045ff1830..0xffff800045ff1d00) in pool 'processpl'
KASAN: allocated at:
#0 pool_get+0x770 sys/kern/subr_pool.c:733
#1 process_new+0x47 sys/kern/kern_fork.c:221
#2 fork1+0x533 sys/kern/kern_fork.c:408
#3 kthread_create+0xa8 sys/kern/kern_kthread.c:61
#4 sys_acct+0x35e acct_start sys/kern/kern_acct.c:300 [inline]
#4 sys_acct+0x35e sys/kern/kern_acct.c:151
#5 syscall+0x1089 mi_syscall sys/sys/syscall_mi.h:176 [inline]
#5 syscall+0x1089 sys/arch/amd64/amd64/trap.c:783
#6 Xsyscall+0x128
KASAN: freed at:
#0 pool_put+0x79 sys/kern/subr_pool.c:918
#1 process_zap+0x457 sys/kern/kern_exit.c:898
#2 reaper+0x3e6 sys/kern/kern_exit.c:525
#3 proc_trampoline+0x10
KASAN: pc: doktrace+0x9ff
KASAN: call trace:
#0 __asan_load8_noabort+0xbd kasan_shadow_check sys/kern/subr_kasan.c:-1 [inline]
#0 __asan_load8_noabort+0xbd sys/kern/subr_kasan.c:1099
#1 doktrace+0x9ff ktrsetchildren sys/kern/kern_ktrace.c:602 [inline]
#1 doktrace+0x9ff sys/kern/kern_ktrace.c:518
#2 sys_ktrace+0x1f6 sys/kern/kern_ktrace.c:559
#3 syscall+0x1089 mi_syscall sys/sys/syscall_mi.h:176 [inline]
#3 syscall+0x1089 sys/arch/amd64/amd64/trap.c:783
#4 Xsyscall+0x128
KASAN: shadow of 0xffff800045ff1780..0xffff800045ff1a00 (1 cell = 8 bytes):
0xffff800045ff1780: fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd
0xffff800045ff1800: fd fd fd fd fd fd 08 08 fd fd fd fd fd fd fd fd
>0xffff800045ff1880: fd fd[fd]fd fd fd fd fd fd fd fd fd fd fd fd fd
0xffff800045ff1900: fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd
0xffff800045ff1980: fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd
KASAN: legend: 00 valid; 01..07 partial; fb malloc redzone; fc malloc freed; fd pool freed; fe kmem; fa global; f1..f4/f8 stack/scope
ddb{1}> trace
db_enter() at db_enter+0x17 sys/arch/amd64/amd64/db_interface.c:457
panic(ffffffff84632b4f) at panic+0x270 sys/kern/subr_prf.c:198
__asan_load8_noabort(ffff800045ff1890) at __asan_load8_noabort+0xde kasan_shadow_check sys/kern/subr_kasan.c:-1 [inline]
__asan_load8_noabort(ffff800045ff1890) at __asan_load8_noabort+0xde sys/kern/subr_kasan.c:1099
doktrace(ffff800001c7a968,4,814,0,ffff800045ffca78) at doktrace+0x9ff ktrsetchildren sys/kern/kern_ktrace.c:602 [inline]
doktrace(ffff800001c7a968,4,814,0,ffff800045ffca78) at doktrace+0x9ff sys/kern/kern_ktrace.c:518
sys_ktrace(ffff800045ffca78,ffff80003bb862d0,ffff80003bb86240) at sys_ktrace+0x1f6 sys/kern/kern_ktrace.c:559
syscall(ffff80003bb862d0) at syscall+0x1089 mi_syscall sys/sys/syscall_mi.h:176 [inline]
syscall(ffff80003bb862d0) at syscall+0x1089 sys/arch/amd64/amd64/trap.c:783
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0xf88312a7260, count: -7
ddb{1}> show registers
rdi 0
rsi 0x1
rbp 0xffff80003bb85cd0
rbx 0xffff80003bb85d40
rdx 0
rcx 0xffff800028fe3ff0
rax 0xffff80000015cb00
r8 0x101010101010101
r9 0x8080808080808080
r10 0xffff80003bb85ab8
r11 0xffffffff8416f5d0 x86_bus_space_io_read_1
r12 0xffffffff84632b4f .str.28+0x9b28f
r13 0xffff800028fe4c08
r14 0xffff800028fe4e07
r15 0x1
rip 0xffffffff82a38477 db_enter+0x17
cs 0x8
rflags 0x246
rsp 0xffff80003bb85cd0
ss 0x10
db_enter+0x17: popq %rbp
ddb{1}> show proc
PROC (syz-executor) tid=467366 pid=19180 tcnt=3 stat=onproc
flags process=0 proc=4000000<THREAD>
runpri=17, usrpri=86, slppri=17, nice=20
wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0
forw=0xffffffffffffffff, list=0xffff800045ff5248,0xffff800045ff47f8
process=0xffff800045ff09c0 user=0xffff80003bb7b000, vmspace=0xffff800001c45018
estcpu=36, cpticks=22, pctcpu=0.0, user=1, sys=21, intr=0
ddb{1}> ps
PID TID PPID UID S FLAGS WAIT COMMAND
16801 250677 20077 0 7 0 syz-executor
51124 109213 81759 0 2 0 syz-executor
51124 441355 81759 0 3 0x4000080 fsleep syz-executor
43604 372995 23696 0 2 0 syz-executor
43604 507363 23696 0 3 0x4000080 kqread syz-executor
43604 64197 23696 0 3 0x4000080 fsleep syz-executor
43604 36802 23696 0 3 0x4000080 fsleep syz-executor
63243 334104 10003 0 2 0 syz-executor
63243 233890 10003 0 3 0x4000080 fsleep syz-executor
92615 58623 24817 0 2 0 syz-executor
92615 47178 24817 0 3 0x4000080 fsleep syz-executor
18125 436332 83422 0 2 0 syz-executor
18125 171357 83422 0 2 0x4000000 syz-executor
19180 170435 35247 0 2 0 syz-executor
*19180 467366 35247 0 7 0x4000000 syz-executor
19180 352268 35247 0 3 0x4000080 fsleep syz-executor
97963 95515 36401 0 2 0x82000 syz-executor
97963 456333 36401 0 3 0x4002000 suspend syz-executor
24817 384273 49210 0 3 0x82 nanoslp syz-executor
36401 508411 49210 0 3 0x82 nanoslp syz-executor
81759 341247 49210 0 3 0x82 nanoslp syz-executor
10003 299985 49210 0 3 0x82 nanoslp syz-executor
35247 284380 49210 0 3 0x82 nanoslp syz-executor
83422 185596 49210 0 3 0x82 nanoslp syz-executor
20077 342533 49210 0 3 0x82 nanoslp syz-executor
23696 344988 49210 0 3 0x82 nanoslp syz-executor
49210 206838 33930 0 3 0x82 kqread syz-executor
33930 306008 90938 0 3 0x10008a sigsusp ksh
90938 322547 85234 0 3 0x98 kqread sshd-session
85234 194933 25327 0 3 0x92 kqread sshd-session
9047 482397 1 0 3 0x100083 ttyin getty
25327 43187 1 0 3 0x88 kqread sshd
16980 205411 34135 74 3 0x1100092 bpf pflogd
34135 212732 1 0 3 0x80 sbwait pflogd
62390 195220 39493 73 3 0x1100090 kqread syslogd
39493 451317 1 0 3 0x100082 sbwait syslogd
33018 513846 1 0 3 0x100080 kqread resolvd
82115 271981 50104 77 3 0x100092 kqread dhcpleased
22064 57387 50104 77 3 0x100092 kqread dhcpleased
50104 253364 1 0 3 0x80 kqread dhcpleased
44104 240036 0 0 3 0x14200 bored smr
66407 241123 0 0 2 0x14200 zerothread
82500 262331 0 0 3 0x14200 aiodoned aiodoned
13097 417030 0 0 3 0x14200 syncer update
9293 381704 0 0 3 0x14200 cleaner cleaner
84932 127642 0 0 3 0x14200 reaper reaper
61323 163687 0 0 3 0x14200 pgdaemon pagedaemon
53154 206343 0 0 3 0x14200 bored viomb
69525 119751 0 0 3 0x40014200 acpi0 acpi0
26424 193184 0 0 3 0x40014200 idle1
62912 191502 0 0 3 0x14200 bored softnet1
40970 369972 0 0 3 0x14200 bored softnet0
29400 480221 0 0 3 0x14200 bored systqmp
19531 454362 0 0 3 0x14200 bored systq
74066 203402 0 0 3 0x14200 tmoslp softclockmp
11226 185810 0 0 3 0x40014200 tmoslp softclock
67183 273061 0 0 3 0x40014200 idle0
1 457268 0 0 3 0x82 wait init
0 0 -1 0 3 0x10010200 scheduler swapper
ddb{1}> show all locks
Process 19180 (syz-executor) thread 0xffff800045ffca78 (467366)
exclusive kernel_lock &kernel_lock r = 0 (0xffffffff8542a300)
#0 witness_lock+0x632 stacktrace_save sys/sys/stacktrace.h:37 [inline]
#0 witness_lock+0x632 sys/kern/subr_witness.c:1160
#1 __mp_acquire_count+0x48 sys/kern/kern_lock.c:-1
#2 sleep_finish+0x423 sys/kern/kern_synch.c:369
#3 biowait+0xe6 sys/kern/vfs_bio.c:1110
#4 bwrite+0x4e1 sys/kern/vfs_bio.c:625
#5 ffs_update+0x619 sys/ufs/ffs/ffs_inode.c:111
#6 ffs_truncate+0x12f0 sys/ufs/ffs/ffs_inode.c:-1
#7 ufs_inactive+0x2cb sys/ufs/ufs/ufs_inode.c:84
#8 VOP_INACTIVE+0x1bb sys/kern/vfs_vops.c:498
#9 vrele+0x16a sys/kern/vfs_subr.c:845
#10 ktrsettrace+0x16c sys/kern/kern_ktrace.c:122
#11 ktrops+0x338 sys/kern/kern_ktrace.c:574
#12 doktrace+0x9e8 ktrsetchildren sys/kern/kern_ktrace.c:596 [inline]
#12 doktrace+0x9e8 sys/kern/kern_ktrace.c:518
#13 sys_ktrace+0x1f6 sys/kern/kern_ktrace.c:559
#14 syscall+0x1089 mi_syscall sys/sys/syscall_mi.h:176 [inline]
#14 syscall+0x1089 sys/arch/amd64/amd64/trap.c:783
#15 Xsyscall+0x128
ddb{1}> show malloc
Type InUse MemUse HighUse Limit Requests Type Lim
devbuf 11064 12324K 12324K 166960K 12190 0
pcb 17 28K 33K 166960K 105 0
rtable 239 12K 13K 166960K 353 0
pf 34 22K 24K 166960K 47 0
ifaddr 43 12K 12K 166960K 45 0
ifgroup 55 2K 2K 166960K 55 0
sysctl 1 1K 13K 166960K 5 0
counters 70 42K 42K 166960K 70 0
ioctlops 0 0K 4K 166960K 1526 0
iov 0 0K 20K 166960K 10 0
mount 1 1K 1K 166960K 1 0
log 0 0K 0K 166960K 4 0
vnodes 1361 87K 87K 166960K 1483 0
UFS quota 1 36K 36K 166960K 1 0
UFS mount 5 44K 44K 166960K 5 0
shm 2 2K 10K 166960K 9 0
VM map 2 1K 1K 166960K 2 0
sem 12 0K 0K 166960K 13 0
dirhash 12 2K 2K 166960K 12 0
ACPI 1734 201K 292K 166960K 11964 0
file desc 18 65K 93K 166960K 217 0
proc 74 145K 177K 166960K 573 0
subproc 72 9K 9K 166960K 72 0
NFS srvsock 1 0K 0K 166960K 1 0
NFS daemon 1 20K 20K 166960K 1 0
in_multi 99 7K 7K 166960K 99 0
ether_multi 1 0K 0K 166960K 1 0
mrt 0 0K 0K 166960K 3 0
ISOFS mount 1 36K 36K 166960K 1 0
MSDOSFS mount 1 20K 20K 166960K 1 0
ttys 49 344K 344K 166960K 49 0
exec 0 0K 2K 166960K 387 0
fusefs mount 1 36K 36K 166960K 1 0
tdb 3 1K 1K 166960K 3 0
VM swap 8 62K 64K 166960K 10 0
UVM amap 239 245K 262K 166960K 3828 0
UVM aobj 12 4K 4K 166960K 12 0
pinsyscall 1067 1752K 1752K 166960K 1376 0
memdesc 1 4K 4K 166960K 1 0
crypto data 1 1K 1K 166960K 1 0
NDP 12 0K 2K 166960K 28 0
temp 76 9172K 9185K 166960K 4711 0
kqueue 14 44K 48K 166960K 42 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
plcache 128 28 0 0 1 0 1 1 0 8 0
rtpcb 120 34 0 31 1 0 1 1 0 8 0
rtentry 176 112 0 1 6 0 6 6 0 8 0
unpcb 144 106 0 86 2 0 2 2 0 8 1
syncache 336 4 0 4 1 0 1 1 0 8 1
tcpcb 736 54 0 48 4 0 4 4 0 8 3
arp 136 19 0 0 1 0 1 1 0 8 0
inpcb 328 197 0 187 7 0 7 7 0 8 6
nd6 152 24 0 0 1 0 1 1 0 8 0
kcovpl 48 8 0 0 1 0 1 1 0 8 0
pffrag 232 1 0 0 1 0 1 1 0 482 0
pffrnode 88 1 0 0 1 0 1 1 0 8 0
pffrent 40 1 0 0 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
pfstitem 24 26 0 0 1 0 1 1 0 8 0
pfstkey 128 26 0 0 1 0 1 1 0 8 0
pfstate 448 26 0 0 3 0 3 3 0 8 0
pfrule 1360 22 0 17 2 1 1 2 0 8 0
art_heap8 4096 1 0 0 1 0 1 1 0 8 0
art_heap4 256 452 0 0 29 0 29 29 0 8 0
art_table 40 453 0 0 5 0 5 5 0 8 0
art_node 32 112 0 11 1 0 1 1 0 8 0
sysvmsgpl 40 1 0 1 1 0 1 1 0 8 1
semapl 72 11 0 1 1 0 1 1 0 8 0
shmpl 112 9 0 0 1 0 1 1 0 8 0
dirhash 1024 17 0 0 3 0 3 3 0 8 0
dino2pl 256 1708 0 234 93 0 93 93 0 8 0
ffsino 296 1708 0 234 114 0 114 114 0 8 0
nchpl 144 2012 0 306 64 0 64 64 0 8 0
vnodes 216 1897 0 0 106 0 106 106 0 8 0
namei 1024 6715 0 6715 2 0 2 2 0 8 2
percpumem 16 51 0 0 1 0 1 1 0 8 0
kstatmem 264 27 0 0 2 0 2 2 0 8 0
scxspl 216 7239 0 7239 2 1 1 2 1 8 1
plimitpl 152 33 0 16 1 0 1 1 0 8 0
sigapl 424 536 0 488 7 0 7 7 0 8 1
knotepl 120 62 0 0 2 0 2 2 0 8 0
kqueuepl 224 54 0 44 1 0 1 1 0 8 0
pipepl 344 140 0 112 3 0 3 3 0 8 0
fdescpl 528 519 0 487 3 0 3 3 0 8 0
filepl 160 2352 0 2062 13 0 13 13 0 8 0
lockfpl 104 38 0 34 1 0 1 1 0 8 0
lockfspl 48 19 0 15 1 0 1 1 0 8 0
sessionpl 144 27 0 18 1 0 1 1 0 8 0
pgrppl 48 35 0 18 1 0 1 1 0 8 0
ucredpl 104 166 0 153 1 0 1 1 0 8 0
zombiepl 144 488 0 488 1 0 1 1 0 8 1
processpl 1232 536 0 488 5 0 5 5 0 8 0
procpl 664 675 0 617 6 0 6 6 0 8 0
sockpl 752 340 0 307 12 0 12 12 0 8 8
mcl64k 65536 3 0 0 1 0 1 1 0 8 0
mcl16k 16384 1 0 0 1 0 1 1 0 8 0
mcl12k 12288 1 0 0 1 0 1 1 0 8 0
mcl8k 8192 2 0 0 1 0 1 1 0 8 0
mcl4k 4096 120 0 0 15 0 15 15 0 8 0
mcl2k 2048 18 0 0 3 0 3 3 0 8 0
mextrefs 64 17 0 0 1 0 1 1 0 8 0
mtagpl 96 3 0 0 1 0 1 1 0 8 0
mbufpl 256 241 0 0 15 0 15 15 0 8 0
bufpl 272 2513 0 138 159 0 159 159 0 8 0
anonpl 32 5309 0 0 43 0 43 43 0 222 0
amapchunkpl 152 10965 0 10468 23 0 23 23 0 158 2
amappl16 200 2070 0 2039 5 3 2 5 0 8 0
amappl15 192 102 0 102 1 1 0 1 0 8 0
amappl14 184 434 0 432 1 0 1 1 0 8 0
amappl13 176 138 0 126 1 0 1 1 0 8 0
amappl12 168 803 0 772 2 0 2 2 0 8 0
amappl11 160 9 0 9 2 1 1 1 0 8 1
amappl10 152 66 0 52 1 0 1 1 0 8 0
amappl9 144 273 0 273 1 1 0 1 0 8 0
amappl8 136 96 0 94 1 0 1 1 0 8 0
amappl7 128 152 0 139 1 0 1 1 0 8 0
amappl6 120 154 0 153 1 0 1 1 0 8 0
amappl5 112 109 0 97 1 0 1 1 0 8 0
amappl4 104 298 0 277 1 0 1 1 0 8 0
amappl3 96 1982 0 1863 4 0 4 4 0 8 0
amappl2 88 545 0 481 2 0 2 2 0 8 0
amappl1 80 10774 0 10172 16 1 15 15 0 8 2
amappl 88 3088 0 2922 4 0 4 4 0 92 0
uvmvnodes 80 101 0 0 3 0 3 3 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 128 253 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 11 0 0 1 0 1 1 0 8 0
uaddrrnd 24 519 0 487 1 0 1 1 0 8 0
uaddrbest 32 2 0 0 1 0 1 1 0 8 0
uaddr 24 519 0 487 1 0 1 1 0 8 0
vmmpekpl 168 6303 0 6272 2 0 2 2 0 8 0
vmmpepl 168 42635 0 40678 87 0 87 87 0 357 0
vmsppl 488 518 0 487 5 0 5 5 0 8 1
rwobjpl 80 15709 0 14658 24 0 24 24 0 8 1
pdppl 4096 1047 0 974 101 28 73 87 0 8 0
pvpl 32 11203 0 0 92 1 91 91 0 265 0
pmappl 256 518 0 487 3 0 3 3 0 8 0
extentpl 40 46 0 28 1 0 1 1 0 8 0
phpool 120 440 0 31 13 0 13 13 0 8 0
ddb{1}> machine ddbcpu 0
Stopped at x86_ipi_db+0x19: leave
x86_ipi_db(ffffffff8521aff0) at x86_ipi_db+0x19 sys/arch/amd64/amd64/db_interface.c:412
x86_ipi_handler() at x86_ipi_handler+0x112 sys/arch/amd64/amd64/ipi.c:106
Xresume_lapic_ipi() at Xresume_lapic_ipi+0x27
__mp_lock(ffffffff85429b00) at __mp_lock+0x283 __mp_lock_spin sys/kern/kern_lock.c:142 [inline]
__mp_lock(ffffffff85429b00) at __mp_lock+0x283 sys/kern/kern_lock.c:173
softintr_dispatch(0) at softintr_dispatch+0x215 sys/kern/kern_softintr.c:83
dosoftint(0) at dosoftint+0x7b sys/arch/amd64/amd64/intr.c:862
Xsoftclock() at Xsoftclock+0x27
__asan_load4_noabort(ffffffff8542a2f8) at __asan_load4_noabort+0x9 sys/kern/subr_kasan.c:1098
__mp_lock(ffffffff85429b00) at __mp_lock+0x27a __mp_lock_spin sys/kern/kern_lock.c:142 [inline]
__mp_lock(ffffffff85429b00) at __mp_lock+0x27a sys/kern/kern_lock.c:173
syscall(ffff80003bb6df70) at syscall+0x1048 mi_syscall sys/sys/syscall_mi.h:175 [inline]
syscall(ffff80003bb6df70) at syscall+0x1048 sys/arch/amd64/amd64/trap.c:783
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7ed200b70f40, count: 4
ddb{0}> trace
x86_ipi_db(ffffffff8521aff0) at x86_ipi_db+0x19 sys/arch/amd64/amd64/db_interface.c:412
x86_ipi_handler() at x86_ipi_handler+0x112 sys/arch/amd64/amd64/ipi.c:106
Xresume_lapic_ipi() at Xresume_lapic_ipi+0x27
__mp_lock(ffffffff85429b00) at __mp_lock+0x283 __mp_lock_spin sys/kern/kern_lock.c:142 [inline]
__mp_lock(ffffffff85429b00) at __mp_lock+0x283 sys/kern/kern_lock.c:173
softintr_dispatch(0) at softintr_dispatch+0x215 sys/kern/kern_softintr.c:83
dosoftint(0) at dosoftint+0x7b sys/arch/amd64/amd64/intr.c:862
Xsoftclock() at Xsoftclock+0x27
__asan_load4_noabort(ffffffff8542a2f8) at __asan_load4_noabort+0x9 sys/kern/subr_kasan.c:1098
__mp_lock(ffffffff85429b00) at __mp_lock+0x27a __mp_lock_spin sys/kern/kern_lock.c:142 [inline]
__mp_lock(ffffffff85429b00) at __mp_lock+0x27a sys/kern/kern_lock.c:173
syscall(ffff80003bb6df70) at syscall+0x1048 mi_syscall sys/sys/syscall_mi.h:175 [inline]
syscall(ffff80003bb6df70) at syscall+0x1048 sys/arch/amd64/amd64/trap.c:783
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7ed200b70f40, count: -11
ddb{0}> machine ddbcpu 1
Stopped at db_enter+0x17: popq %rbp
db_enter() at db_enter+0x17 sys/arch/amd64/amd64/db_interface.c:457
panic(ffffffff84632b4f) at panic+0x270 sys/kern/subr_prf.c:198
__asan_load8_noabort(ffff800045ff1890) at __asan_load8_noabort+0xde kasan_shadow_check sys/kern/subr_kasan.c:-1 [inline]
__asan_load8_noabort(ffff800045ff1890) at __asan_load8_noabort+0xde sys/kern/subr_kasan.c:1099
doktrace(ffff800001c7a968,4,814,0,ffff800045ffca78) at doktrace+0x9ff ktrsetchildren sys/kern/kern_ktrace.c:602 [inline]
doktrace(ffff800001c7a968,4,814,0,ffff800045ffca78) at doktrace+0x9ff sys/kern/kern_ktrace.c:518
sys_ktrace(ffff800045ffca78,ffff80003bb862d0,ffff80003bb86240) at sys_ktrace+0x1f6 sys/kern/kern_ktrace.c:559
syscall(ffff80003bb862d0) at syscall+0x1089 mi_syscall sys/sys/syscall_mi.h:176 [inline]
syscall(ffff80003bb862d0) at syscall+0x1089 sys/arch/amd64/amd64/trap.c:783
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0xf88312a7260, count: 8
ddb{1}> trace
db_enter() at db_enter+0x17 sys/arch/amd64/amd64/db_interface.c:457
panic(ffffffff84632b4f) at panic+0x270 sys/kern/subr_prf.c:198
__asan_load8_noabort(ffff800045ff1890) at __asan_load8_noabort+0xde kasan_shadow_check sys/kern/subr_kasan.c:-1 [inline]
__asan_load8_noabort(ffff800045ff1890) at __asan_load8_noabort+0xde sys/kern/subr_kasan.c:1099
doktrace(ffff800001c7a968,4,814,0,ffff800045ffca78) at doktrace+0x9ff ktrsetchildren sys/kern/kern_ktrace.c:602 [inline]
doktrace(ffff800001c7a968,4,814,0,ffff800045ffca78) at doktrace+0x9ff sys/kern/kern_ktrace.c:518
sys_ktrace(ffff800045ffca78,ffff80003bb862d0,ffff80003bb86240) at sys_ktrace+0x1f6 sys/kern/kern_ktrace.c:559
syscall(ffff80003bb862d0) at syscall+0x1089 mi_syscall sys/sys/syscall_mi.h:176 [inline]
syscall(ffff80003bb862d0) at syscall+0x1089 sys/arch/amd64/amd64/trap.c:783
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0xf88312a7260, count: -7
---
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