syzbot
assert "pr->ps_threadcnt == NUM" failed in kern_exit.c (3)
Status:
upstream: reported on 2026/06/28 14:32
Reported-by: syzbot+4330a351fe243674944a@syzkaller.appspotmail.com
First crash: 52d, last: 27d
Sample crash report:
panic: kernel diagnostic assertion "pr->ps_threadcnt == 0" failed: file "/syzkaller/managers/setuid/kernel/sys/kern/kern_exit.c", line 888
Stopped at db_enter+0x25: addq $0x8,%rsp
TID PID UID PRFLAGS PFLAGS CPU COMMAND
219930 53070 32767 0x10 0 0 syz-executor
*107317 47513 0 0x14000 0x200 1K reaper
db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438
panic(ffffffff834bcf5b) at panic+0x1e5 sys/kern/subr_prf.c:198
__assert(ffffffff834f9fdc,ffffffff8349b644,378,ffffffff8351a711) at __assert+0x29 sys/kern/subr_prf.c:-1
process_zap(ffff80003abc9360) at process_zap+0x31d sys/kern/kern_exit.c:889
reaper(ffff800045ffdc90) at reaper+0x2b0 sys/kern/kern_exit.c:525
end trace frame: 0x0, count: 10
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: kernel diagnostic assertion "pr->ps_threadcnt == 0" failed: file "/syzkaller/managers/setuid/kernel/sys/kern/kern_exit.c", line 888
ddb{1}> show kasan
No such command
ddb{1}> trace
db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438
panic(ffffffff834bcf5b) at panic+0x1e5 sys/kern/subr_prf.c:198
__assert(ffffffff834f9fdc,ffffffff8349b644,378,ffffffff8351a711) at __assert+0x29 sys/kern/subr_prf.c:-1
process_zap(ffff80003abc9360) at process_zap+0x31d sys/kern/kern_exit.c:889
reaper(ffff800045ffdc90) at reaper+0x2b0 sys/kern/kern_exit.c:525
end trace frame: 0x0, count: -5
ddb{1}> show registers
rdi 0
rsi 0x1
rbp 0xffff80002a1f4060
rbx 0xffff80002999ee07
rdx 0
rcx 0xffff800045ffdc90
rax 0xffff80002999dff0
r8 0x101010101010101
r9 0x8080808080808080
r10 0x9dcf77231b058cdb
r11 0x1bef00bc6a5eb9e7
r12 0xffff80002999ec08
r13 0
r14 0
r15 0x1
rip 0xffffffff811ec255 db_enter+0x25
cs 0x8
rflags 0x246
rsp 0xffff80002a1f4050
ss 0x10
db_enter+0x25: addq $0x8,%rsp
ddb{1}> show proc
PROC (reaper) tid=107317 pid=47513 tcnt=1 stat=onproc
flags process=14000<NOZOMBIE,SYSTEM> proc=200<SYSTEM>
runpri=32, usrpri=51, slppri=32, nice=20
wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0
forw=0xffffffffffffffff, list=0xffff800045fff4c0,0xffff800045ffd240
process=0xffff800045ffb9c0 user=0xffff80002a1ef000, vmspace=0xffffffff839dfdc0
estcpu=1, cpticks=7, pctcpu=0.0, user=0, sys=0, intr=0
ddb{1}> ps
PID TID PPID UID S PRLAGS PFLAGS WAIT COMMAND
9056 72134 64653 32767 2 0x10 0 syz-executor
20436 378390 55445 32767 2 0x10 0 syz-executor
20436 16575 55445 32767 3 0x10 0x4000080 fsleep syz-executor
53070 219930 46343 32767 7 0x10 0 syz-executor
53070 142999 46343 32767 3 0x10 0x4000080 lockf syz-executor
53070 339794 46343 32767 3 0x10 0x4000080 fsleep syz-executor
56161 258689 38634 32767 2 0x10 0 syz-executor
56161 215333 38634 32767 3 0x10 0x4000080 fsleep syz-executor
59835 96792 33235 32767 2 0x10 0 syz-executor
59835 482308 33235 32767 2 0x10 0x4000000 syz-executor
64020 72599 90906 32767 2 0x10 0 syz-executor
64020 160597 90906 32767 3 0x10 0x4000080 fsleep syz-executor
64020 416198 90906 32767 3 0x10 0x4000080 fsleep syz-executor
90906 408967 24840 32767 3 0x10 0x80 nanoslp syz-executor
64653 303498 48208 32767 3 0x10 0x80 nanoslp syz-executor
7914 259525 55326 32767 2 0x10 0xc80 syz-executor
7914 195087 55326 32767 3 0x10 0x4000080 sbwait syz-executor
7914 442069 55326 32767 3 0x10 0x4000080 sbufrcv syz-executor
7914 252220 55326 32767 3 0x10 0x4000080 fsleep syz-executor
33235 92635 59579 32767 3 0x10 0x80 nanoslp syz-executor
50014 293026 85793 32767 2 0x10 0xc80 syz-executor
46343 131032 8338 32767 3 0x10 0x80 nanoslp syz-executor
55445 173842 46738 32767 2 0x10 0xc80 syz-executor
38634 369190 2139 32767 3 0x10 0x80 nanoslp syz-executor
55326 492656 22931 32767 3 0x10 0x80 nanoslp syz-executor
59579 261040 62539 0 3 0x2 0x80 wait syz-executor
85793 396637 62539 0 3 0x2 0x80 wait syz-executor
24840 160525 62539 0 3 0x2 0x80 wait syz-executor
8338 403518 62539 0 3 0x2 0x80 wait syz-executor
48208 291622 62539 0 3 0x2 0x80 wait syz-executor
46738 410700 62539 0 3 0x2 0x80 wait syz-executor
2139 48868 62539 0 3 0x2 0x80 wait syz-executor
22931 405991 62539 0 3 0x2 0x80 wait syz-executor
62539 258951 7849 0 3 0x2 0x80 kqread syz-executor
7849 253757 17714 0 3 0x100002 0x88 sigsusp ksh
17714 280707 86340 0 3 0x10 0x88 kqread sshd-session
86340 237172 6221 0 3 0x12 0x80 kqread sshd-session
20906 57743 1 0 3 0x100003 0x80 ttyin getty
6221 366106 1 0 3 0 0x88 kqread sshd
33687 406948 86584 73 3 0x1100010 0x80 kqread syslogd
86584 109987 1 0 3 0x100002 0x80 sbwait syslogd
79642 43363 1 0 3 0x100000 0x80 kqread resolvd
76449 108915 12318 77 3 0x100012 0x80 kqread dhcpleased
5333 404454 12318 77 3 0x100012 0x80 kqread dhcpleased
12318 198584 1 0 3 0 0x80 kqread dhcpleased
56408 181125 0 0 2 0x14000 0x40000200 smr
88407 133226 0 0 2 0x14000 0x200 zerothread
73633 216808 0 0 3 0x14000 0x200 aiodoned aiodoned
79016 421837 0 0 3 0x14000 0x200 syncer update
171 358014 0 0 3 0x14000 0x200 cleaner cleaner
*47513 107317 0 0 7 0x14000 0x200 reaper
99565 344743 0 0 3 0x14000 0x200 pgdaemon pagedaemon
79029 57623 0 0 3 0x14000 0x200 bored viomb
15737 205491 0 0 3 0x14000 0x40000200 acpi0 acpi0
81458 1909 0 0 3 0x14000 0x40000200 idle1
28317 314398 0 0 3 0x14000 0x200 bored softnet1
94612 480492 0 0 2 0x14000 0x200 softnet0
67695 514626 0 0 3 0x14000 0x200 smrbar systqmp
89148 207037 0 0 3 0x14000 0x200 bored systq
46452 398282 0 0 3 0x14000 0x200 tmoslp softclockmp
38086 391445 0 0 3 0x14000 0x40000200 tmoslp softclock
9343 82633 0 0 3 0x14000 0x40000200 idle0
1 476731 0 0 3 0x2 0x80 wait init
0 0 -1 0 3 0x10000 0x200 scheduler swapper
ddb{1}> show all locks
Process 53070 (syz-executor) thread 0xffff80003abc6028 (219930)
exclusive rwlock uobjlk r = 0 (0xfffff8806b3f9198)
#0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline]
#0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160
#1 rw_do_enter_write+0x419 sys/kern/kern_rwlock.c:320
#2 uvm_fault+0x1e5 sys/uvm/uvm_fault.c:649
#3 upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:192
#4 usertrap+0x430 sys/arch/amd64/amd64/trap.c:640
#5 recall_trap+0x8
shared rwlock vmmaplk r = 0 (0xfffff8806af5eca0)
#0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline]
#0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160
#1 rw_do_enter_read+0x3e8 sys/kern/kern_rwlock.c:413
#2 uvmfault_lookup+0x122 sys/uvm/uvm_fault.c:1880
#3 uvm_fault_check+0x4f sys/uvm/uvm_fault.c:693
#4 uvm_fault+0x106 sys/uvm/uvm_fault.c:627
#5 upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:192
#6 usertrap+0x430 sys/arch/amd64/amd64/trap.c:640
#7 recall_trap+0x8
Process 7914 (syz-executor) thread 0xffff80003a7b87e8 (195087)
exclusive rwlock sbufrcv r = 0 (0xffff8000015a1b70)
#0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline]
#0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160
#1 rw_do_enter_write+0x419 sys/kern/kern_rwlock.c:320
#2 sblock+0xb6 sys/kern/uipc_socket2.c:536
#3 soreceive+0x27d sys/kern/uipc_socket.c:890
#4 recvit+0x40b sys/kern/uipc_syscalls.c:1078
#5 sys_recvmmsg+0x410 sys/kern/uipc_syscalls.c:969
#6 syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline]
#6 syscall+0xbd4 sys/arch/amd64/amd64/trap.c:783
#7 Xsyscall+0x128
Process 47513 (reaper) thread 0xffff800045ffdc90 (107317)
exclusive kernel_lock &kernel_lock r = 0 (0xffffffff83ad5ec0)
#0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline]
#0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160
#1 __mp_acquire_count+0x58 sys/kern/kern_lock.c:-1
#2 sleep_finish+0x2d8 sys/kern/kern_synch.c:369
#3 rw_do_enter_write+0x1dc sys/kern/kern_rwlock.c:298
#4 knote_processexit+0x2b sys/kern/kern_event.c:2235
#5 reaper+0x26d sys/kern/kern_exit.c:515
#6 proc_trampoline+0x10
Process 67695 (systqmp) thread 0xffff800045ffecf8 (514626)
shared rwlock systqmp r = 0 (0xffffffff839cb608)
#0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline]
#0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160
#1 taskq_thread+0x12a sys/kern/kern_task.c:442
#2 proc_trampoline+0x10
ddb{1}> show malloc
Type InUse MemUse HighUse Limit Requests Type Lim
devbuf 11047 12018K 12034K 166960K 12138 0
pcb 17 12K 12K 166960K 17 0
rtable 237 6K 7K 166960K 347 0
pf 31 16K 16K 166960K 31 0
ifaddr 42 7K 7K 166960K 44 0
ifgroup 50 2K 2K 166960K 50 0
sysctl 1 1K 9K 166960K 5 0
counters 70 37K 37K 166960K 70 0
ioctlops 0 0K 2K 166960K 29 0
iov 1 4K 8K 166960K 2 0
mount 1 1K 1K 166960K 1 0
log 0 0K 0K 166960K 4 0
vnodes 1287 81K 81K 166960K 1353 0
UFS quota 1 32K 32K 166960K 1 0
UFS mount 5 36K 36K 166960K 5 0
shm 3 5K 5K 166960K 5 0
VM map 2 1K 1K 166960K 2 0
sem 2 0K 0K 166960K 2 0
dirhash 12 2K 2K 166960K 12 0
ACPI 1734 201K 291K 166960K 11964 0
file desc 26 97K 117K 166960K 155 0
proc 59 115K 147K 166960K 498 0
subproc 72 4K 4K 166960K 72 0
NFS srvsock 1 0K 0K 166960K 1 0
NFS daemon 1 16K 16K 166960K 1 0
in_multi 99 7K 7K 166960K 99 0
ether_multi 1 0K 0K 166960K 1 0
mrt 0 0K 0K 166960K 2 0
ISOFS mount 1 32K 32K 166960K 1 0
MSDOSFS mount 1 16K 16K 166960K 1 0
ttys 43 201K 201K 166960K 43 0
exec 0 0K 1K 166960K 362 0
fusefs mount 1 32K 32K 166960K 1 0
tdb 3 0K 0K 166960K 3 0
VM swap 8 62K 64K 166960K 10 0
UVM amap 268 181K 181K 166960K 3071 0
UVM aobj 8 2K 2K 166960K 8 0
pinsyscall 47 94K 109K 166960K 1225 0
memdesc 1 4K 4K 166960K 1 0
crypto data 1 1K 1K 166960K 1 0
ip6_options 2 0K 0K 166960K 4 0
NDP 25 1K 2K 166960K 27 0
temp 34 9114K 9120K 166960K 3622 0
kqueue 19 29K 29K 166960K 33 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 176 111 0 1 5 0 5 5 0 8 0
unpcb 144 43 0 26 1 0 1 1 0 8 0
syncache 336 4 0 4 1 0 1 1 0 8 1
tcpcb 736 14 0 9 1 0 1 1 0 8 0
arp 136 18 0 0 1 0 1 1 0 8 0
inpcb 328 75 0 61 2 0 2 2 0 8 0
nd6 152 24 0 0 1 0 1 1 0 8 0
kcovpl 48 8 0 0 1 0 1 1 0 8 0
art_heap8 4096 1 0 0 1 0 1 1 0 8 0
art_heap4 256 453 0 0 29 0 29 29 0 8 0
art_table 40 454 0 0 5 0 5 5 0 8 0
art_node 32 111 0 10 1 0 1 1 0 8 0
shmpl 112 5 0 0 1 0 1 1 0 8 0
dirhash 1024 17 0 0 3 0 3 3 0 8 0
dino2pl 256 1570 0 107 92 0 92 92 0 8 0
ffsino 296 1570 0 107 113 0 113 113 0 8 0
nchpl 144 1786 0 91 63 0 63 63 0 8 0
vnodes 216 1651 0 0 92 0 92 92 0 8 0
namei 1024 5225 0 5225 1 0 1 1 0 8 1
percpumem 16 51 0 0 1 0 1 1 0 8 0
kstatmem 264 25 0 0 2 0 2 2 0 8 0
scxspl 216 6136 0 6136 4 2 2 3 1 8 2
plimitpl 152 39 0 13 1 0 1 1 0 8 0
sigapl 424 444 0 390 7 0 7 7 0 8 0
knotepl 120 508 0 0 16 0 16 16 0 8 0
kqueuepl 224 29 0 14 1 0 1 1 0 8 0
pipepl 344 122 0 95 3 0 3 3 0 8 0
fdescpl 528 428 0 390 3 0 3 3 0 8 0
filepl 160 1507 0 1281 10 0 10 10 0 8 0
lockfpl 104 15 0 10 1 0 1 1 0 8 0
lockfspl 48 8 0 4 1 0 1 1 0 8 0
sessionpl 144 23 0 7 1 0 1 1 0 8 0
pgrppl 48 31 0 7 1 0 1 1 0 8 0
ucredpl 104 128 0 109 1 0 1 1 0 8 0
zombiepl 144 391 0 390 1 0 1 1 0 8 0
processpl 1232 444 0 390 5 0 5 5 0 8 0
procpl 664 469 0 405 6 0 6 6 0 8 0
sockpl 752 152 0 118 4 0 4 4 0 8 0
mcl8k 8192 2 0 0 1 0 1 1 0 8 0
mcl4k 4096 115 0 0 15 0 15 15 0 8 0
mcl2k 2048 18 0 0 3 0 3 3 0 8 0
mextrefs 64 18 0 0 1 0 1 1 0 8 0
mtagpl 96 3 0 0 1 0 1 1 0 8 0
mbufpl 256 185 0 0 12 0 12 12 0 8 0
bufpl 272 2244 0 102 143 0 143 143 0 8 0
anonpl 32 5982 0 0 49 0 49 49 0 247 0
amapchunkpl 152 8847 0 7884 40 0 40 40 0 158 2
amappl16 200 1679 0 1664 5 0 5 5 0 8 4
amappl15 192 5 0 5 1 0 1 1 0 8 1
amappl14 184 418 0 417 1 0 1 1 0 8 0
amappl13 176 114 0 104 1 0 1 1 0 8 0
amappl12 168 673 0 636 2 0 2 2 0 8 0
amappl11 160 9 0 8 1 0 1 1 0 8 0
amappl10 152 60 0 50 1 0 1 1 0 8 0
amappl9 144 268 0 268 1 0 1 1 0 8 1
amappl8 136 89 0 88 1 0 1 1 0 8 0
amappl7 128 139 0 128 1 0 1 1 0 8 0
amappl6 120 146 0 145 1 0 1 1 0 8 0
amappl5 112 102 0 95 1 0 1 1 0 8 0
amappl4 104 256 0 241 1 0 1 1 0 8 0
amappl3 96 1437 0 1300 6 2 4 4 0 8 0
amappl2 88 500 0 451 2 0 2 2 0 8 0
amappl1 80 10037 0 9455 14 0 14 14 0 8 0
amappl 88 2400 0 2200 5 0 5 5 0 92 0
uvmvnodes 80 98 0 0 2 0 2 2 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 7 0 0 1 0 1 1 0 8 0
uaddrrnd 24 428 0 390 1 0 1 1 0 8 0
uaddrbest 32 2 0 0 1 0 1 1 0 8 0
uaddr 24 428 0 390 1 0 1 1 0 8 0
vmmpekpl 168 5417 0 5388 2 0 2 2 0 8 0
vmmpepl 168 36547 0 34457 94 0 94 94 0 357 2
vmsppl 488 427 0 390 7 1 6 6 0 8 0
rwobjpl 80 13939 0 12981 22 0 22 22 0 8 0
pdppl 4096 863 0 780 105 12 93 93 0 8 10
pvpl 32 15076 0 0 122 0 122 122 0 265 0
pmappl 256 427 0 390 4 1 3 3 0 8 0
extentpl 40 46 0 28 1 0 1 1 0 8 0
phpool 112 414 0 15 12 0 12 12 0 8 0
ddb{1}> machine ddbcpu 0
Stopped at x86_ipi_db+0x27: addq $0x8,%rsp
x86_ipi_db(ffffffff839d8ff0) at x86_ipi_db+0x27 sys/arch/amd64/amd64/db_interface.c:394
x86_ipi_handler() at x86_ipi_handler+0xd9 sys/arch/amd64/amd64/ipi.c:106
Xresume_lapic_ipi() at Xresume_lapic_ipi+0x27
__mp_lock(ffffffff83ad56c0) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:142 [inline]
__mp_lock(ffffffff83ad56c0) at __mp_lock+0x192 sys/kern/kern_lock.c:173
softintr_dispatch(0) at softintr_dispatch+0x125 sys/kern/kern_softintr.c:83
dosoftint(0) at dosoftint+0x54 sys/arch/amd64/amd64/intr.c:862
Xsoftclock() at Xsoftclock+0x27
__mp_lock(ffffffff83ad56c0) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:142 [inline]
__mp_lock(ffffffff83ad56c0) at __mp_lock+0x192 sys/kern/kern_lock.c:173
uvm_fault(fffff8806af5eba0,6b3d1f79000,0,1) at uvm_fault+0x1ea sys/uvm/uvm_fault.c:650
upageflttrap(ffff80003c3faf90,6b3d1f79000) at upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:192
usertrap(ffff80003c3faf90) at usertrap+0x430 sys/arch/amd64/amd64/trap.c:640
recall_trap() at recall_trap+0x8
end of kernel
end trace frame: 0x758fc7b94c50, count: 3
ddb{0}> trace
x86_ipi_db(ffffffff839d8ff0) at x86_ipi_db+0x27 sys/arch/amd64/amd64/db_interface.c:394
x86_ipi_handler() at x86_ipi_handler+0xd9 sys/arch/amd64/amd64/ipi.c:106
Xresume_lapic_ipi() at Xresume_lapic_ipi+0x27
__mp_lock(ffffffff83ad56c0) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:142 [inline]
__mp_lock(ffffffff83ad56c0) at __mp_lock+0x192 sys/kern/kern_lock.c:173
softintr_dispatch(0) at softintr_dispatch+0x125 sys/kern/kern_softintr.c:83
dosoftint(0) at dosoftint+0x54 sys/arch/amd64/amd64/intr.c:862
Xsoftclock() at Xsoftclock+0x27
__mp_lock(ffffffff83ad56c0) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:142 [inline]
__mp_lock(ffffffff83ad56c0) at __mp_lock+0x192 sys/kern/kern_lock.c:173
uvm_fault(fffff8806af5eba0,6b3d1f79000,0,1) at uvm_fault+0x1ea sys/uvm/uvm_fault.c:650
upageflttrap(ffff80003c3faf90,6b3d1f79000) at upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:192
usertrap(ffff80003c3faf90) at usertrap+0x430 sys/arch/amd64/amd64/trap.c:640
recall_trap() at recall_trap+0x8
end of kernel
end trace frame: 0x758fc7b94c50, count: -12
ddb{0}> machine ddbcpu 1
Stopped at db_enter+0x25: addq $0x8,%rsp
db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438
panic(ffffffff834bcf5b) at panic+0x1e5 sys/kern/subr_prf.c:198
__assert(ffffffff834f9fdc,ffffffff8349b644,378,ffffffff8351a711) at __assert+0x29 sys/kern/subr_prf.c:-1
process_zap(ffff80003abc9360) at process_zap+0x31d sys/kern/kern_exit.c:889
reaper(ffff800045ffdc90) at reaper+0x2b0 sys/kern/kern_exit.c:525
end trace frame: 0x0, count: 10
ddb{1}> trace
db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438
panic(ffffffff834bcf5b) at panic+0x1e5 sys/kern/subr_prf.c:198
__assert(ffffffff834f9fdc,ffffffff8349b644,378,ffffffff8351a711) at __assert+0x29 sys/kern/subr_prf.c:-1
process_zap(ffff80003abc9360) at process_zap+0x31d sys/kern/kern_exit.c:889
reaper(ffff800045ffdc90) at reaper+0x2b0 sys/kern/kern_exit.c:525
end trace frame: 0x0, count: -5
Struck through repros no longer work on HEAD.