panic: kernel diagnostic assertion "nlevel >= IPL_NONE" failed: file "/syzkaller/managers/main/kernel/sys/arch/amd64/amd64/intr.c", line 775
Stopped at db_enter+0x25: addq $0x8,%rsp
TID PID UID PRFLAGS PFLAGS CPU COMMAND
*268140 26056 0 0x10 0x4000000 0 syz-executor
db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:437
panic(ffffffff830b7685) at panic+0x1cf sys/kern/subr_prf.c:198
__assert(ffffffff8306a957,ffffffff8306a6a0,307,ffffffff830251d7) at __assert+0x29
splraise(deadbeef) at splraise+0xad sys/arch/amd64/amd64/intr.c:775
mtx_enter(ffff8000012d8008) at mtx_enter+0x9e sys/kern/kern_lock.c:308
klist_mutex_lock(ffff8000012d8008) at klist_mutex_lock+0x32 sys/kern/kern_event.c:2352
klist_invalidate(ffff8000012d80a8) at klist_invalidate+0xe6 klist_lock sys/kern/kern_event.c:2317 [inline]
klist_invalidate(ffff8000012d80a8) at klist_invalidate+0xe6 sys/kern/kern_event.c:2283
bpfsdetach(ffff800001286fc0) at bpfsdetach+0xff sys/net/bpf.c:1800
bpfdetach(ffff80000128c800) at bpfdetach+0x76
if_detach(ffff80000128c800) at if_detach+0x14f sys/net/if.c:1193
tun_clone_destroy(ffff80000128c800) at tun_clone_destroy+0x2aa sys/net/if_tun.c:338
if_clone_destroy(ffff80003770d650) at if_clone_destroy+0x1d7 sys/net/if.c:1382
sys_ioctl(ffff800035c0c028,ffff80003770d830,ffff80003770d780) at sys_ioctl+0x678
syscall(ffff80003770d830) at syscall+0x97e sys/arch/amd64/amd64/trap.c:577
end trace frame: 0xffff80003770d8b0, count: 0
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 "nlevel >= IPL_NONE" failed: file "/syzkaller/managers/main/kernel/sys/arch/amd64/amd64/intr.c", line 775
ddb> trace
db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:437
panic(ffffffff830b7685) at panic+0x1cf sys/kern/subr_prf.c:198
__assert(ffffffff8306a957,ffffffff8306a6a0,307,ffffffff830251d7) at __assert+0x29
splraise(deadbeef) at splraise+0xad sys/arch/amd64/amd64/intr.c:775
mtx_enter(ffff8000012d8008) at mtx_enter+0x9e sys/kern/kern_lock.c:308
klist_mutex_lock(ffff8000012d8008) at klist_mutex_lock+0x32 sys/kern/kern_event.c:2352
klist_invalidate(ffff8000012d80a8) at klist_invalidate+0xe6 klist_lock sys/kern/kern_event.c:2317 [inline]
klist_invalidate(ffff8000012d80a8) at klist_invalidate+0xe6 sys/kern/kern_event.c:2283
bpfsdetach(ffff800001286fc0) at bpfsdetach+0xff sys/net/bpf.c:1800
bpfdetach(ffff80000128c800) at bpfdetach+0x76
if_detach(ffff80000128c800) at if_detach+0x14f sys/net/if.c:1193
tun_clone_destroy(ffff80000128c800) at tun_clone_destroy+0x2aa sys/net/if_tun.c:338
if_clone_destroy(ffff80003770d650) at if_clone_destroy+0x1d7 sys/net/if.c:1382
sys_ioctl(ffff800035c0c028,ffff80003770d830,ffff80003770d780) at sys_ioctl+0x678
syscall(ffff80003770d830) at syscall+0x97e sys/arch/amd64/amd64/trap.c:577
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0xa065a63c0, count: -15
ddb> show registers
rdi 0
rsi 0x1
rbp 0xffff80003770d2f0
rbx 0xffffffff834a2630 cdevsw+0x730
rdx 0xffff80000125d440
rcx 0
rax 0xffff800035c0c028
r8 0
r9 0x8080808080808080
r10 0xa1b1e9ee14ce0433
r11 0xcccde5454ad51c04
r12 0
r13 0xffff8000012d80a8
r14 0
r15 0x1
rip 0xffffffff81e543d5 db_enter+0x25
cs 0x8
rflags 0x246
rsp 0xffff80003770d2e0
ss 0x10
db_enter+0x25: addq $0x8,%rsp
ddb> show proc
PROC (syz-executor) tid=268140 pid=26056 tcnt=3 stat=onproc
flags process=10<SUGID> proc=4000000<THREAD>
runpri=32, usrpri=79, slppri=32, nice=20
wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0
forw=0xffffffffffffffff, list=0xffff80002a4aea38,0xffff8000355fd200
process=0xffff8000327f8460 user=0xffff800037708000, vmspace=0xfffffd806c1e0850
estcpu=29, cpticks=2, pctcpu=0.0, user=0, sys=2, intr=0
ddb> ps
PID TID PPID UID S FLAGS WAIT COMMAND
38569 307188 62393 0 2 0 syz-executor
38569 392927 62393 0 2 0x4000000 syz-executor
21474 509954 57272 0 2 0 syz-executor
21474 113049 57272 0 2 0x4000000 syz-executor
59075 6900 67658 0 2 0 syz-executor
59075 370873 67658 0 3 0x4000080 fsleep syz-executor
64883 158747 50656 0 2 0 syz-executor
64883 18967 50656 0 2 0x4000000 syz-executor
26056 244927 89634 0 3 0x90 nanoslp syz-executor
*26056 268140 89634 0 7 0x4000010 syz-executor
26056 300825 89634 0 3 0x4000090 fsleep syz-executor
58812 343122 10386 0 2 0x480 syz-executor
58812 460189 10386 0 3 0x4000080 pipewr syz-executor
58812 432433 10386 0 3 0x4000080 pipewr syz-executor
88890 159712 15593 -1 3 0x90 nanoslp syz-executor
88890 442413 15593 -1 3 0x4000090 ttyout syz-executor
88890 52996 15593 -1 3 0x4000090 fsleep syz-executor
88890 84075 15593 -1 3 0x4000090 fsleep syz-executor
5977 14811 0 0 3 0x14280 nfsidl nfsio
56839 101996 0 0 3 0x14280 nfsidl nfsio
55784 461912 0 0 3 0x14280 nfsidl nfsio
58566 176149 0 0 3 0x14280 nfsidl nfsio
31694 365315 0 0 3 0x14280 nfsidl nfsio
87641 161442 0 0 3 0x14280 nfsidl nfsio
61184 410245 0 0 3 0x14280 nfsidl nfsio
2061 110468 0 0 3 0x14280 nfsidl nfsio
30726 245052 0 0 3 0x14280 nfsidl nfsio
20304 24537 0 0 3 0x14280 nfsidl nfsio
54214 101148 0 0 3 0x14280 nfsidl nfsio
37474 122185 0 0 3 0x14280 nfsidl nfsio
32486 423095 0 0 3 0x14280 nfsidl nfsio
28287 221324 0 0 3 0x14280 nfsidl nfsio
90736 118803 0 0 3 0x14280 nfsidl nfsio
36644 385259 0 0 3 0x14280 nfsidl nfsio
8606 222145 0 0 3 0x14280 nfsidl nfsio
67369 454314 0 0 3 0x14280 nfsidl nfsio
70128 257252 0 0 3 0x14280 nfsidl nfsio
89935 226013 0 0 3 0x14280 nfsidl nfsio
26303 66408 0 0 3 0x14200 bored sosplice
83531 283357 0 0 3 0x14200 acct acct
15593 432062 8837 0 3 0x82 nanoslp syz-executor
10386 493001 8837 0 3 0x82 nanoslp syz-executor
62393 152535 8837 0 2 0x482 syz-executor
57272 339261 8837 0 3 0x82 nanoslp syz-executor
16631 467254 8837 0 3 0x82 nanoslp syz-executor
67658 81141 8837 0 2 0x482 syz-executor
89634 153646 8837 0 3 0x82 nanoslp syz-executor
50656 240777 8837 0 2 0x482 syz-executor
8837 21027 86401 0 3 0x82 kqread syz-executor
86401 449959 21162 0 3 0x10008a sigsusp ksh
21162 510380 7091 0 3 0x98 kqread sshd-session
7091 421859 27801 0 3 0x92 kqread sshd-session
17633 191111 1 0 3 0x100083 ttyin getty
27801 295674 1 0 3 0x88 kqread sshd
85789 124538 34674 73 3 0x1100090 kqread syslogd
34674 133379 1 0 3 0x100082 sbwait syslogd
24404 233763 1 0 3 0x100080 kqread resolvd
17614 301603 53474 77 3 0x100092 kqread dhcpleased
47884 483969 53474 77 3 0x100092 kqread dhcpleased
53474 170074 1 0 3 0x80 kqread dhcpleased
34861 91681 0 0 3 0x14200 bored smr
5935 79008 0 0 2 0x14200 zerothread
21736 146533 0 0 3 0x14200 aiodoned aiodoned
1986 11134 0 0 3 0x14200 syncer update
93285 293408 0 0 3 0x14200 cleaner cleaner
66282 352915 0 0 2 0x14200 reaper
23954 56392 0 0 3 0x14200 pgdaemon pagedaemon
95817 143191 0 0 3 0x14200 bored viomb
17522 370699 0 0 3 0x40014200 acpi0 acpi0
5995 57195 0 0 3 0x14200 bored softnet3
45047 274726 0 0 3 0x14200 bored softnet2
92544 439307 0 0 3 0x14200 bored softnet1
86310 341996 0 0 3 0x14200 bored softnet0
62462 14891 0 0 3 0x14200 bored systqmp
82340 405394 0 0 3 0x14200 bored systq
24460 331086 0 0 2 0x40014200 softclock
53958 442760 0 0 3 0x40014200 idle0
1 330669 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 10178 11107K 11428K 166960K 11569 0
pcb 17 12K 12K 166960K 67 0
rtable 204 6K 7K 166960K 395 0
pf 32 13K 14K 166960K 51 0
ifaddr 40 6K 7K 166960K 52 0
ifgroup 54 2K 2K 166960K 71 0
sysctl 0 0K 0K 166960K 2 0
counters 31 17K 17K 166960K 35 0
ioctlops 0 0K 4K 166960K 49 0
iov 1 12K 12K 166960K 10 0
mount 1 1K 1K 166960K 1 0
log 0 0K 0K 166960K 4 0
vnodes 1429 90K 90K 166960K 1604 0
UFS quota 1 32K 32K 166960K 1 0
UFS mount 5 36K 36K 166960K 5 0
shm 2 1K 5K 166960K 10 0
VM map 2 1K 1K 166960K 2 0
sem 8 0K 0K 166960K 9 0
dirhash 12 2K 2K 166960K 27 0
ACPI 1690 195K 286K 166960K 12468 0
file desc 17 61K 93K 166960K 383 0
sigio 0 0K 0K 166960K 42 0
proc 60 59K 108K 166960K 503 0
subproc 104 6K 6K 166960K 104 0
NFS srvsock 1 0K 0K 166960K 1 0
NFS daemon 1 16K 16K 166960K 1 0
ip_moptions 0 0K 0K 166960K 29 0
in_multi 88 6K 7K 166960K 109 0
ether_multi 1 0K 0K 166960K 2 0
mrt 0 0K 0K 166960K 1 0
ISOFS mount 1 32K 32K 166960K 1 0
MSDOSFS mount 1 16K 16K 166960K 1 0
ttys 67 307K 307K 166960K 67 0
exec 0 0K 1K 166960K 451 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 237 73K 86K 166960K 4983 0
UVM aobj 81 3K 3K 166960K 82 0
pinsyscall 38 76K 98K 166960K 1406 0
memdesc 1 4K 4K 166960K 1 0
crypto data 1 1K 1K 166960K 1 0
ip6_options 0 0K 0K 166960K 6 0
NDP 12 0K 2K 166960K 32 0
temp 48 6817K 6881K 166960K 19518 0
kqueue 13 20K 28K 166960K 68 0
SYN cache 2 16K 16K 166960K 2 0
ddb> show all pools
Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle
rtpcb 120 56 0 53 1 0 1 1 0 8 0
rtentry 112 117 0 25 4 0 4 4 0 8 0
unpcb 144 437 0 420 6 5 1 6 0 8 0
syncache 336 3 0 3 1 1 0 1 0 8 0
tcpcb 808 126 0 122 7 6 1 7 0 8 0
arp 88 18 0 2 1 0 1 1 0 8 0
inpcb 336 333 0 326 6 4 2 6 0 8 1
nd6 104 27 0 4 1 0 1 1 0 8 0
kcovpl 48 8 0 0 1 0 1 1 0 8 0
ppxss 1072 1 0 1 1 1 0 1 0 8 0
pftag 88 2 0 0 1 0 1 1 0 8 0
pfrule 1344 2 0 2 2 1 1 1 0 8 1
art_heap8 4096 1 0 0 1 0 1 1 0 8 0
art_heap4 256 496 0 93 29 1 28 29 0 8 1
art_table 32 497 0 93 4 0 4 4 0 8 0
art_node 16 115 0 33 1 0 1 1 0 8 0
sysvmsgpl 40 7 0 5 1 0 1 1 0 8 0
semapl 112 7 0 1 1 0 1 1 0 8 0
shmpl 112 79 0 1 3 0 3 3 0 8 0
dirhash 1024 27 0 10 3 0 3 3 0 8 0
dino2pl 256 1998 0 498 95 0 95 95 0 8 0
ffsino 240 1998 0 498 89 0 89 89 0 8 0
nchpl 144 2575 0 899 63 0 63 63 0 8 0
uvmvnodes 80 2270 0 0 47 0 47 47 0 8 0
vnodes 216 2270 0 0 127 0 127 127 0 8 0
namei 1024 8014 0 8014 4 2 2 2 0 8 2
kstatmem 264 32 0 8 2 0 2 2 0 8 0
scsiplug 72 1 0 1 1 1 0 1 0 8 0
scxspl 216 7664 0 7664 8 7 1 8 1 8 1
plimitpl 152 65 0 48 1 0 1 1 0 8 0
sigapl 424 685 0 617 8 0 8 8 0 8 0
futexpl 64 4441 0 4437 1 0 1 1 0 8 0
knotepl 120 19659 0 19612 22 13 9 16 0 8 7
kqueuepl 184 96 0 86 1 0 1 1 0 8 0
pipepl 288 134 0 106 4 1 3 3 0 8 0
fdescpl 432 647 0 618 5 1 4 5 0 8 0
filepl 120 3260 0 3014 13 3 10 12 0 8 2
lockfpl 104 169 0 166 1 0 1 1 0 8 0
lockfspl 48 45 0 42 1 0 1 1 0 8 0
sessionpl 144 21 0 13 1 0 1 1 0 8 0
pgrppl 48 31 0 15 1 0 1 1 0 8 0
ucredpl 104 404 0 391 1 0 1 1 0 8 0
zombiepl 144 658 0 657 1 0 1 1 0 8 0
processpl 1096 685 0 617 5 0 5 5 0 8 0
procpl 648 1077 0 998 8 0 8 8 0 8 0
sosppl 168 4 0 4 1 1 0 1 0 8 0
sockpl 504 830 0 803 25 20 5 21 0 8 0
mcl64k 65536 2 0 2 2 1 1 1 0 8 1
mcl8k 8192 10 0 10 1 1 0 1 0 8 0
mcl4k 4096 2911 0 2860 16 8 8 15 0 8 0
mcl2k 2048 440 0 439 5 3 2 4 0 8 1
mtagpl 96 19 0 7 1 0 1 1 0 8 0
mbufpl 256 6695 0 6546 15 3 12 14 0 8 0
bufpl 280 2658 0 94 184 0 184 184 0 8 0
anonpl 24 161535 0 158033 23 1 22 22 0 187 0
amapchunkpl 152 17310 0 16772 37 7 30 30 0 158 9
amappl16 200 3678 0 3649 4 2 2 4 0 8 0
amappl15 192 15 0 14 1 0 1 1 0 8 0
amappl14 184 113 0 103 1 0 1 1 0 8 0
amappl13 176 10 0 10 1 1 0 1 0 8 0
amappl12 168 1263 0 1232 3 1 2 3 0 8 0
amappl11 160 49 0 39 1 0 1 1 0 8 0
amappl10 152 17 0 17 1 1 0 1 0 8 0
amappl9 144 112 0 112 1 1 0 1 0 8 0
amappl8 136 19 0 17 1 0 1 1 0 8 0
amappl7 128 98 0 88 1 0 1 1 0 8 0
amappl6 120 164 0 163 1 0 1 1 0 8 0
amappl5 112 128 0 119 1 0 1 1 0 8 0
amappl4 104 285 0 269 1 0 1 1 0 8 0
amappl3 96 3167 0 3065 3 0 3 3 0 8 0
amappl2 88 916 0 835 2 0 2 2 0 8 0
amappl1 80 8015 0 7496 13 2 11 13 0 8 0
amappl 88 4617 0 4434 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 81 0 1 2 0 2 2 0 8 0
uaddrrnd 24 647 0 617 1 0 1 1 0 8 0
uaddrbest 32 2 0 0 1 0 1 1 0 8 0
uaddr 24 647 0 617 1 0 1 1 0 8 0
vmmpekpl 168 6347 0 6309 2 0 2 2 0 8 0
vmmpepl 168 46711 0 44910 80 0 80 80 0 357 1
vmsppl 352 646 0 617 4 1 3 4 0 8 0
rwobjpl 24 18930 0 15710 20 0 20 20 0 8 0
pdppl 4096 1301 0 1234 95 28 67 81 0 8 0
pvpl 32 333404 0 324568 82 5 77 81 0 265 1
pmappl 216 646 0 617 3 0 3 3 0 8 0
extentpl 40 55 0 38 1 0 1 1 0 8 0
phpool 112 401 0 81 11 0 11 11 0 8 0
ddb> machine ddbcpu 0
No such command
ddb> trace
db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:437
panic(ffffffff830b7685) at panic+0x1cf sys/kern/subr_prf.c:198
__assert(ffffffff8306a957,ffffffff8306a6a0,307,ffffffff830251d7) at __assert+0x29
splraise(deadbeef) at splraise+0xad sys/arch/amd64/amd64/intr.c:775
mtx_enter(ffff8000012d8008) at mtx_enter+0x9e sys/kern/kern_lock.c:308
klist_mutex_lock(ffff8000012d8008) at klist_mutex_lock+0x32 sys/kern/kern_event.c:2352
klist_invalidate(ffff8000012d80a8) at klist_invalidate+0xe6 klist_lock sys/kern/kern_event.c:2317 [inline]
klist_invalidate(ffff8000012d80a8) at klist_invalidate+0xe6 sys/kern/kern_event.c:2283
bpfsdetach(ffff800001286fc0) at bpfsdetach+0xff sys/net/bpf.c:1800
bpfdetach(ffff80000128c800) at bpfdetach+0x76
if_detach(ffff80000128c800) at if_detach+0x14f sys/net/if.c:1193
tun_clone_destroy(ffff80000128c800) at tun_clone_destroy+0x2aa sys/net/if_tun.c:338
if_clone_destroy(ffff80003770d650) at if_clone_destroy+0x1d7 sys/net/if.c:1382
sys_ioctl(ffff800035c0c028,ffff80003770d830,ffff80003770d780) at sys_ioctl+0x678
syscall(ffff80003770d830) at syscall+0x97e sys/arch/amd64/amd64/trap.c:577
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0xa065a63c0, count: -15
ddb> machine ddbcpu 1
No such command
ddb> trace
db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:437
panic(ffffffff830b7685) at panic+0x1cf sys/kern/subr_prf.c:198
__assert(ffffffff8306a957,ffffffff8306a6a0,307,ffffffff830251d7) at __assert+0x29
splraise(deadbeef) at splraise+0xad sys/arch/amd64/amd64/intr.c:775
mtx_enter(ffff8000012d8008) at mtx_enter+0x9e sys/kern/kern_lock.c:308
klist_mutex_lock(ffff8000012d8008) at klist_mutex_lock+0x32 sys/kern/kern_event.c:2352
klist_invalidate(ffff8000012d80a8) at klist_invalidate+0xe6 klist_lock sys/kern/kern_event.c:2317 [inline]
klist_invalidate(ffff8000012d80a8) at klist_invalidate+0xe6 sys/kern/kern_event.c:2283
bpfsdetach(ffff800001286fc0) at bpfsdetach+0xff sys/net/bpf.c:1800
bpfdetach(ffff80000128c800) at bpfdetach+0x76
if_detach(ffff80000128c800) at if_detach+0x14f sys/net/if.c:1193
tun_clone_destroy(ffff80000128c800) at tun_clone_destroy+0x2aa sys/net/if_tun.c:338
if_clone_destroy(ffff80003770d650) at if_clone_destroy+0x1d7 sys/net/if.c:1382
sys_ioctl(ffff800035c0c028,ffff80003770d830,ffff80003770d780) at sys_ioctl+0x678
syscall(ffff80003770d830) at syscall+0x97e sys/arch/amd64/amd64/trap.c:577
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0xa065a63c0, count: -15