panic: kernel diagnostic assertion "self->ci_proc_pmap == p->p_vmspace->vm_map.pmap" failed: file "/syzkaller/managers/main/kernel/sys/arch/amd64/amd64/pmap.c", line 1496
Stopped at db_enter+0x1c: addq $0x8,%rsp
TID PID UID PRFLAGS PFLAGS CPU COMMAND
db_enter() at db_enter+0x1c sys/arch/amd64/amd64/db_interface.c:437
panic(ffffffff8277fd7b) at panic+0x165 sys/kern/subr_prf.c:198
__assert(ffffffff827fb3f9,ffffffff827e0cde,5d8,ffffffff828087b1) at __assert+0x29 sys/kern/subr_prf.c:157
pmap_deactivate(ffff80002173c7e8) at pmap_deactivate+0xb4 sys/arch/amd64/amd64/pmap.c:1496
cpu_exit(ffff80002173c7e8) at cpu_exit+0x1d sys/arch/amd64/amd64/vm_machdep.c:129
exit1(ffff80002173c7e8,0,0,3) at exit1+0xa9e sys/kern/kern_exit.c:377
single_thread_check_locked(ffff80002173c7e8,0) at single_thread_check_locked+0x226 sys/kern/kern_sig.c:2016
userret(ffff80002173c7e8) at userret+0x72 single_thread_check sys/kern/kern_sig.c:2060 [inline]
userret(ffff80002173c7e8) at userret+0x72 sys/kern/kern_sig.c:1970
syscall(ffff800021850e80) at syscall+0x559 mi_syscall_return sys/sys/syscall_mi.h:137 [inline]
syscall(ffff800021850e80) at syscall+0x559 sys/arch/amd64/amd64/trap.c:644
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x415cdee5170, count: 5
https://www.openbsd.org/ddb.html describes the minimum info required in bug
reports. Insufficient info makes it difficult to find and fix bugs.
ddb>
ddb> set $lines = 0
ddb> set $maxwidth = 0
ddb> show panic
*cpu0: kernel diagnostic assertion "self->ci_proc_pmap == p->p_vmspace->vm_map.pmap" failed: file "/syzkaller/managers/main/kernel/sys/arch/amd64/amd64/pmap.c", line 1496
ddb> trace
db_enter() at db_enter+0x1c sys/arch/amd64/amd64/db_interface.c:437
panic(ffffffff8277fd7b) at panic+0x165 sys/kern/subr_prf.c:198
__assert(ffffffff827fb3f9,ffffffff827e0cde,5d8,ffffffff828087b1) at __assert+0x29 sys/kern/subr_prf.c:157
pmap_deactivate(ffff80002173c7e8) at pmap_deactivate+0xb4 sys/arch/amd64/amd64/pmap.c:1496
cpu_exit(ffff80002173c7e8) at cpu_exit+0x1d sys/arch/amd64/amd64/vm_machdep.c:129
exit1(ffff80002173c7e8,0,0,3) at exit1+0xa9e sys/kern/kern_exit.c:377
single_thread_check_locked(ffff80002173c7e8,0) at single_thread_check_locked+0x226 sys/kern/kern_sig.c:2016
userret(ffff80002173c7e8) at userret+0x72 single_thread_check sys/kern/kern_sig.c:2060 [inline]
userret(ffff80002173c7e8) at userret+0x72 sys/kern/kern_sig.c:1970
syscall(ffff800021850e80) at syscall+0x559 mi_syscall_return sys/sys/syscall_mi.h:137 [inline]
syscall(ffff800021850e80) at syscall+0x559 sys/arch/amd64/amd64/trap.c:644
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x415cdee5170, count: -10
ddb> show registers
rdi 0
rsi 0x1
rbp 0xffff800021850b10
rbx 0xfffffd806f805390
rdx 0x3fd
rcx 0
rax 0xab
r8 0x101010101010101
r9 0x8080808080808080
r10 0xb2cbd9d5e5f80394
r11 0x114714a3ca086ee3
r12 0
r13 0x15036cc1
r14 0
r15 0x1
rip 0xffffffff8152775c db_enter+0x1c
cs 0x8
rflags 0x246
rsp 0xffff800021850b00
ss 0x10
db_enter+0x1c: addq $0x8,%rsp
ddb> show proc
PROC (syz-executor.0) pid=235922 stat=dead
flags process=41008<EXITING,SINGLEEXIT,ZOMBIE> proc=4082000<WEXIT,SUSPSINGLE,THREAD>
pri=69, usrpri=69, nice=20
forw=0xffffffffffffffff, list=0xffffffffffffffff,0xffffffffffffffff
process=0xffff8000216d8000 user=0xffff80002184b000, vmspace=0xfffffd8069a19180
estcpu=19, cpticks=2, pctcpu=0.0
user=0, sys=1, intr=0
ddb> ps
PID TID PPID UID S FLAGS WAIT COMMAND
46936 430620 42482 0 2 0 syz-executor.5
46936 451110 42482 0 3 0x4000080 fsleep syz-executor.5
21296 298365 27517 0 2 0 syz-executor.4
21296 445735 27517 0 3 0x4000080 fsleep syz-executor.4
67351 406474 94507 0 2 0 syz-executor.7
67351 345134 94507 0 3 0x4000080 fsleep syz-executor.7
94507 152841 87087 0 3 0x82 nanoslp syz-executor.7
47954 363040 87087 0 2 0x2 syz-executor.6
27517 487906 87087 0 3 0x82 nanoslp syz-executor.4
42482 86747 87087 0 2 0x482 syz-executor.5
54513 298110 87087 0 2 0x2 syz-executor.3
78252 336303 87087 0 2 0x482 syz-executor.2
78677 337538 87087 0 3 0x82 nanoslp syz-executor.1
1627 43495 87087 0 2 0x2 syz-executor.0
87087 144639 30618 0 3 0x2000082 wait syz-execprog
87087 472386 30618 0 3 0x6000082 nanoslp syz-execprog
87087 209038 30618 0 3 0x6000082 wait syz-execprog
87087 380007 30618 0 3 0x6000082 wait syz-execprog
87087 115840 30618 0 3 0x6000082 wait syz-execprog
87087 49093 30618 0 3 0x6000082 wait syz-execprog
87087 341707 30618 0 3 0x6000082 thrsleep syz-execprog
87087 259371 30618 0 3 0x6000082 wait syz-execprog
87087 249759 30618 0 3 0x6000082 thrsleep syz-execprog
87087 269786 30618 0 3 0x6000082 wait syz-execprog
87087 251320 30618 0 3 0x6000082 thrsleep syz-execprog
87087 504791 30618 0 3 0x6000082 wait syz-execprog
87087 321431 30618 0 3 0x6000082 thrsleep syz-execprog
87087 423212 30618 0 3 0x6000082 kqread syz-execprog
30618 424853 77306 0 3 0x10008a sigsusp ksh
77306 363819 79213 0 3 0x9a kqread sshd
15707 133575 1 0 3 0x100083 ttyin getty
79213 186994 1 0 3 0x88 kqread sshd
97420 487441 41911 73 3 0x1100090 kqread syslogd
41911 18322 1 0 3 0x100082 netio syslogd
52976 115575 1 0 3 0x100080 kqread resolvd
38332 171720 5932 77 3 0x100092 kqread dhcpleased
36514 364903 5932 77 3 0x100092 kqread dhcpleased
5932 202997 1 0 3 0x80 kqread dhcpleased
24309 506349 0 0 3 0x14200 bored smr
9169 99320 0 0 2 0x14200 zerothread
74472 356852 0 0 3 0x14200 aiodoned aiodoned
33468 276138 0 0 3 0x14200 syncer update
93062 28464 0 0 3 0x14200 cleaner cleaner
46401 57942 0 0 3 0x14200 reaper reaper
12939 126 0 0 3 0x14200 pgdaemon pagedaemon
46490 58282 0 0 3 0x14200 bored viomb
26986 382344 0 0 3 0x40014200 acpi0 acpi0
97934 283154 0 0 3 0x14200 bored softnet3
33152 508778 0 0 3 0x14200 bored softnet2
77097 506979 0 0 3 0x14200 bored softnet1
16814 210863 0 0 3 0x14200 bored softnet0
58484 84886 0 0 3 0x14200 bored systqmp
79639 282619 0 0 3 0x14200 bored systq
32064 340736 0 0 3 0x40014200 bored softclock
75244 465507 0 0 3 0x40014200 idle0
1 214555 0 0 3 0x82 wait init
0 0 -1 0 3 0x10200 scheduler swapper
ddb> show all locks
No such command
ddb> show malloc
Type InUse MemUse HighUse Limit Requests Type Lim
devbuf 10163 6400K 6413K 78643K 11241 0
pcb 13 8K 8K 78643K 13 0
rtable 234 6K 6K 78643K 350 0
pf 29 8K 8K 78643K 29 0
ifaddr 43 11K 11K 78643K 45 0
ifgroup 50 2K 2K 78643K 50 0
counters 28 17K 17K 78643K 28 0
ioctlops 0 0K 2K 78643K 29 0
mount 1 1K 1K 78643K 1 0
log 0 0K 0K 78643K 4 0
vnodes 1174 73K 74K 78643K 1187 0
UFS quota 1 32K 32K 78643K 1 0
UFS mount 5 36K 36K 78643K 5 0
shm 2 1K 1K 78643K 2 0
VM map 2 1K 1K 78643K 2 0
sem 2 0K 0K 78643K 2 0
dirhash 12 2K 2K 78643K 12 0
ACPI 1697 195K 286K 78643K 12548 0
file desc 13 45K 77K 78643K 168 0
proc 55 58K 75K 78643K 470 0
NFS srvsock 1 0K 0K 78643K 1 0
NFS daemon 1 16K 16K 78643K 1 0
in_multi 99 7K 7K 78643K 99 0
ether_multi 1 0K 0K 78643K 1 0
ISOFS mount 1 32K 32K 78643K 1 0
MSDOSFS mount 1 16K 16K 78643K 1 0
ttys 25 122K 122K 78643K 25 0
exec 0 0K 1K 78643K 364 0
tdb 3 0K 0K 78643K 3 0
pagedep 1 8K 8K 78643K 1 0
inodedep 1 32K 32K 78643K 1 0
newblk 1 0K 0K 78643K 1 0
VM swap 8 62K 64K 78643K 10 0
UVM amap 226 74K 75K 78643K 3579 0
UVM aobj 3 2K 2K 78643K 3 0
memdesc 1 4K 4K 78643K 1 0
crypto data 1 1K 1K 78643K 1 0
NDP 11 0K 2K 78643K 27 0
temp 1 5896K 6024K 78643K 3977 0
kqueue 12 18K 18K 78643K 25 0
SYN cache 2 16K 16K 78643K 2 0
ddb> show all pools
Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle
rtpcb 120 36 0 33 1 0 1 1 0 8 0
rtentry 112 111 0 1 4 0 4 4 0 8 0
unpcb 144 33 0 20 1 0 1 1 0 8 0
syncache 304 5 0 5 1 1 0 1 0 8 0
tcpqe 32 136 0 136 1 1 0 1 0 8 0
tcpcb 808 8 0 5 1 0 1 1 0 8 0
arp 88 18 0 0 1 0 1 1 0 8 0
inpcb 336 58 0 52 1 0 1 1 0 8 0
nd6 104 24 0 0 1 0 1 1 0 8 0
art_heap8 4096 1 0 0 1 0 1 1 0 8 0
art_heap4 256 452 0 0 29 0 29 29 0 8 0
art_table 32 453 0 0 4 0 4 4 0 8 0
art_node 16 110 0 10 1 0 1 1 0 8 0
dirhash 1024 17 0 0 3 0 3 3 0 8 0
dino2pl 256 1523 0 84 90 0 90 90 0 8 0
ffsino 240 1523 0 84 85 0 85 85 0 8 0
nchpl 144 1812 0 135 63 0 63 63 0 8 0
uvmvnodes 80 1532 0 0 32 0 32 32 0 8 0
vnodes 216 1532 0 0 86 0 86 86 0 8 0
namei 1024 6199 0 6198 7 5 2 4 0 8 1
kstatmem 264 22 0 0 2 0 2 2 0 8 0
scxspl 216 6400 0 6400 3 2 1 3 1 8 1
plimitpl 152 34 0 19 1 0 1 1 0 8 0
sigapl 424 468 0 426 6 0 6 6 0 8 0
futexpl 64 98 0 95 1 0 1 1 0 8 0
knotepl 120 3657 0 3579 3 0 3 3 0 8 0
kqueuepl 184 21 0 13 1 0 1 1 0 8 0
pipepl 288 139 0 111 3 1 2 3 0 8 0
fdescpl 432 452 0 428 4 0 4 4 0 8 1
filepl 120 1640 0 1512 5 0 5 5 0 8 1
lockfpl 104 6 0 4 1 0 1 1 0 8 0
lockfspl 48 4 0 2 1 0 1 1 0 8 0
sessionpl 144 25 0 9 1 0 1 1 0 8 0
pgrppl 48 25 0 9 1 0 1 1 0 8 0
ucredpl 104 66 0 56 1 0 1 1 0 8 0
zombiepl 144 474 0 472 2 1 1 1 0 8 0
pool(zombiepl): free list modified: page 0xfffffd8069993000; item ordinal 2; addr 0xfffffd8069993878 (p 0xfffffd8069993000); offset 0x10=0x274
processpl 1008 469 0 426 9 2 7 8 0 8 1
procpl 680 531 0 471 6 0 6 6 0 8 0
sockpl 456 127 0 105 5 1 4 4 0 8 1
mcl8k 8192 9 0 9 1 1 0 1 0 8 0
mcl4k 4096 5 0 5 1 1 0 1 0 8 0
mcl2k 2048 11910 0 11867 32 26 6 29 0 8 0
mtagpl 96 4 0 4 1 1 0 1 0 8 0
mbufpl 256 19479 0 19338 18 9 9 15 0 8 0
bufpl 288 4151 0 143 288 1 287 287 0 8 0
anonpl 24 194513 0 190278 58 30 28 56 0 188 0
amapchunkpl 152 12124 0 11587 31 6 25 27 0 158 0
amappl16 200 5205 0 5137 5 1 4 5 0 8 0
amappl15 192 22 0 22 1 1 0 1 0 8 0
amappl14 184 152 0 141 2 1 1 2 0 8 0
amappl13 176 15 0 14 1 0 1 1 0 8 0
amappl12 168 1095 0 1070 2 0 2 2 0 8 0
amappl11 160 56 0 45 1 0 1 1 0 8 0
amappl10 152 63 0 54 1 0 1 1 0 8 0
amappl9 144 191 0 191 1 1 0 1 0 8 0
amappl8 136 134 0 105 2 1 1 2 0 8 0
amappl7 128 46 0 41 1 0 1 1 0 8 0
amappl6 120 238 0 222 2 1 1 2 0 8 0
amappl5 112 225 0 217 1 0 1 1 0 8 0
amappl4 104 557 0 522 3 1 2 3 0 8 0
amappl3 96 2919 0 2856 4 1 3 3 0 8 1
amappl2 88 694 0 633 3 1 2 3 0 8 0
amappl1 80 10942 0 10449 22 9 13 22 0 8 0
amappl 88 3098 0 2945 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 2 0 0 1 0 1 1 0 8 0
uaddrrnd 24 452 0 428 1 0 1 1 0 8 0
uaddrbest 32 2 0 0 1 0 1 1 0 8 0
uaddr 24 452 0 428 1 0 1 1 0 8 0
vmmpekpl 168 9981 0 9942 2 0 2 2 0 8 0
vmmpepl 168 48850 0 47339 115 40 75 111 0 357 3
vmsppl 368 451 0 428 3 0 3 3 0 8 0
rwobjpl 24 21980 0 19512 20 1 19 20 0 8 0
pdppl 4096 910 0 856 85 22 63 69 0 8 9
pvpl 32 406484 0 397463 364 283 81 360 0 265 3
pmappl 216 451 0 428 2 0 2 2 0 8 0
extentpl 40 56 0 38 1 0 1 1 0 8 0
phpool 112 657 0 68 18 0 18 18 0 8 1
ddb> machine ddbcpu 0
No such command
ddb> trace
db_enter() at db_enter+0x1c sys/arch/amd64/amd64/db_interface.c:437
panic(ffffffff8277fd7b) at panic+0x165 sys/kern/subr_prf.c:198
__assert(ffffffff827fb3f9,ffffffff827e0cde,5d8,ffffffff828087b1) at __assert+0x29 sys/kern/subr_prf.c:157
pmap_deactivate(ffff80002173c7e8) at pmap_deactivate+0xb4 sys/arch/amd64/amd64/pmap.c:1496
cpu_exit(ffff80002173c7e8) at cpu_exit+0x1d sys/arch/amd64/amd64/vm_machdep.c:129
exit1(ffff80002173c7e8,0,0,3) at exit1+0xa9e sys/kern/kern_exit.c:377
single_thread_check_locked(ffff80002173c7e8,0) at single_thread_check_locked+0x226 sys/kern/kern_sig.c:2016
userret(ffff80002173c7e8) at userret+0x72 single_thread_check sys/kern/kern_sig.c:2060 [inline]
userret(ffff80002173c7e8) at userret+0x72 sys/kern/kern_sig.c:1970
syscall(ffff800021850e80) at syscall+0x559 mi_syscall_return sys/sys/syscall_mi.h:137 [inline]
syscall(ffff800021850e80) at syscall+0x559 sys/arch/amd64/amd64/trap.c:644
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x415cdee5170, count: -10
ddb> machine ddbcpu 1
No such command
ddb> trace
db_enter() at db_enter+0x1c sys/arch/amd64/amd64/db_interface.c:437
panic(ffffffff8277fd7b) at panic+0x165 sys/kern/subr_prf.c:198
__assert(ffffffff827fb3f9,ffffffff827e0cde,5d8,ffffffff828087b1) at __assert+0x29 sys/kern/subr_prf.c:157
pmap_deactivate(ffff80002173c7e8) at pmap_deactivate+0xb4 sys/arch/amd64/amd64/pmap.c:1496
cpu_exit(ffff80002173c7e8) at cpu_exit+0x1d sys/arch/amd64/amd64/vm_machdep.c:129
exit1(ffff80002173c7e8,0,0,3) at exit1+0xa9e sys/kern/kern_exit.c:377
single_thread_check_locked(ffff80002173c7e8,0) at single_thread_check_locked+0x226 sys/kern/kern_sig.c:2016
userret(ffff80002173c7e8) at userret+0x72 single_thread_check sys/kern/kern_sig.c:2060 [inline]
userret(ffff80002173c7e8) at userret+0x72 sys/kern/kern_sig.c:1970
syscall(ffff800021850e80) at syscall+0x559 mi_syscall_return sys/sys/syscall_mi.h:137 [inline]
syscall(ffff800021850e80) at syscall+0x559 sys/arch/amd64/amd64/trap.c:644
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x415cdee5170, count: -10
ddb>