panic: Caught invalid memory access at ffff800001d1f5d4 size 4 op 0
Stopped at db_enter+0x17: popq %rbp
TID PID UID PRFLAGS PFLAGS CPU COMMAND
138852 40854 0 0 0 0 syz-executor
db_enter() at db_enter+0x17 sys/arch/amd64/amd64/db_interface.c:457
panic(ffffffff846387ee) at panic+0x270 sys/kern/subr_prf.c:198
__asan_load4_noabort(ffff800001d1f5d4) at __asan_load4_noabort+0xa3
igmp_leavegroup(ffff800000172500,ffff800001731000,ffff800036ef8700) at igmp_leavegroup+0x127 sys/netinet/igmp.c:583
in_delmulti(ffff800000172500) at in_delmulti+0x10f sys/netinet/in.c:963
ip_freemoptions(ffff800001cf0620) at ip_freemoptions+0x9f sys/netinet/ip_output.c:-1
in_pcbdetach(ffff800001d56cd8) at in_pcbdetach+0x187 sys/netinet/in_pcb.c:605
rip_detach(ffff800001cb11b8) at rip_detach+0x72 sys/netinet/raw_ip.c:509
soclose(ffff800001cb11b8,0) at soclose+0x10a pru_detach sys/sys/protosw.h:281 [inline]
soclose(ffff800001cb11b8,0) at soclose+0x10a sys/kern/uipc_socket.c:403
soo_close(ffff800001d147c8,ffff800045ff7a10) at soo_close+0x72 sys/kern/sys_socket.c:169
fdrop(ffff800001d147c8,ffff800045ff7a10) at fdrop+0x1c3 sys/kern/kern_descrip.c:1281
closef(ffff800001d147c8,ffff800045ff7a10) at closef+0x263 sys/kern/kern_descrip.c:1265
fdfree(ffff800045ff7a10) at fdfree+0x16d sys/kern/kern_descrip.c:1203
exit1(ffff800045ff7a10,0,0,1) at exit1+0x81e sys/kern/kern_exit.c:217
end trace frame: 0xffff800036ef8bd0, 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{1}>
ddb{1}> set $lines = 0
ddb{1}> set $maxwidth = 0
ddb{1}> show panic
*cpu1: Caught invalid memory access at ffff800001d1f5d4 size 4 op 0
ddb{1}> show kasan
KASAN: invalid read of 4 bytes at 0xffff800001d1f5d4 from pc 0xffffffff841e0ed7
KASAN: first bad byte at 0xffff800001d1f5d4 (+0); shadow 0xfc: malloc use-after-free
KASAN: 0xffff800001d1f5d4 is 20 bytes inside the 64-byte malloc slot [0xffff800001d1f5c0..0xffff800001d1f600)
KASAN: allocated at:
#0 malloc+0xda0 sys/kern/kern_malloc.c:446
#1 amap_alloc1+0x3a9 sys/uvm/uvm_amap.c:353
#2 amap_alloc+0x9f sys/uvm/uvm_amap.c:414
#3 amap_copy+0x9fa sys/uvm/uvm_amap.c:567
#4 uvm_fault_check+0x776 sys/uvm/uvm_fault.c:747
#5 uvm_fault+0x1e7 sys/uvm/uvm_fault.c:627
#6 upageflttrap+0xe0 sys/arch/amd64/amd64/trap.c:192
#7 usertrap+0x4f9 sys/arch/amd64/amd64/trap.c:640
#8 recall_trap+0x8
KASAN: freed at:
#0 dofree+0x632 sys/kern/kern_malloc.c:630
#1 amap_free+0x2db sys/uvm/uvm_amap.c:453
#2 uvm_unmap_detach+0x10b sys/uvm/uvm_map.c:1359
#3 uvm_map_teardown+0x53f sys/uvm/uvm_map.c:2536
#4 exit1+0xa58 sys/kern/kern_exit.c:262
#5 sys_exit+0x4a
#6 syscall+0x1089 mi_syscall sys/sys/syscall_mi.h:176 [inline]
#6 syscall+0x1089 sys/arch/amd64/amd64/trap.c:783
#7 Xsyscall+0x128
KASAN: pc: igmp_leavegroup+0x127
KASAN: call trace:
#0 __asan_load4_noabort+0x82 kasan_shadow_check sys/kern/subr_kasan.c:1014 [inline]
#0 __asan_load4_noabort+0x82 sys/kern/subr_kasan.c:1098
#1 igmp_leavegroup+0x127 sys/netinet/igmp.c:583
#2 in_delmulti+0x10f sys/netinet/in.c:963
#3 ip_freemoptions+0x9f sys/netinet/ip_output.c:-1
#4 in_pcbdetach+0x187 sys/netinet/in_pcb.c:605
#5 rip_detach+0x72 sys/netinet/raw_ip.c:509
#6 soclose+0x10a pru_detach sys/sys/protosw.h:281 [inline]
#6 soclose+0x10a sys/kern/uipc_socket.c:403
#7 soo_close+0x72 sys/kern/sys_socket.c:169
#8 fdrop+0x1c3 sys/kern/kern_descrip.c:1281
#9 closef+0x263 sys/kern/kern_descrip.c:1265
#10 fdfree+0x16d sys/kern/kern_descrip.c:1203
#11 exit1+0x81e sys/kern/kern_exit.c:217
#12 sys_exit+0x4a
#13 syscall+0x1089 mi_syscall sys/sys/syscall_mi.h:176 [inline]
#13 syscall+0x1089 sys/arch/amd64/amd64/trap.c:783
#14 Xsyscall+0x128
KASAN: shadow of 0xffff800001d1f480..0xffff800001d1f700 (1 cell = 8 bytes):
0xffff800001d1f480: 08 08 08 08 fb fc fc fc 08 08 08 08 04 fb fc fc
0xffff800001d1f500: fc 08 fc fc fc fc fc fc 08 08 08 08 fb fc fc fc
>0xffff800001d1f580: 08 08 08 04 fb fc fc fc fc 08[fc]fc fc fc fc fc
0xffff800001d1f600: 08 08 08 04 fb fe fe fe 08 08 08 08 fb fe fe fe
0xffff800001d1f680: 08 08 08 04 fb fe fe fe 08 08 08 08 fb fe fe fe
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(ffffffff846387ee) at panic+0x270 sys/kern/subr_prf.c:198
__asan_load4_noabort(ffff800001d1f5d4) at __asan_load4_noabort+0xa3
igmp_leavegroup(ffff800000172500,ffff800001731000,ffff800036ef8700) at igmp_leavegroup+0x127 sys/netinet/igmp.c:583
in_delmulti(ffff800000172500) at in_delmulti+0x10f sys/netinet/in.c:963
ip_freemoptions(ffff800001cf0620) at ip_freemoptions+0x9f sys/netinet/ip_output.c:-1
in_pcbdetach(ffff800001d56cd8) at in_pcbdetach+0x187 sys/netinet/in_pcb.c:605
rip_detach(ffff800001cb11b8) at rip_detach+0x72 sys/netinet/raw_ip.c:509
soclose(ffff800001cb11b8,0) at soclose+0x10a pru_detach sys/sys/protosw.h:281 [inline]
soclose(ffff800001cb11b8,0) at soclose+0x10a sys/kern/uipc_socket.c:403
soo_close(ffff800001d147c8,ffff800045ff7a10) at soo_close+0x72 sys/kern/sys_socket.c:169
fdrop(ffff800001d147c8,ffff800045ff7a10) at fdrop+0x1c3 sys/kern/kern_descrip.c:1281
closef(ffff800001d147c8,ffff800045ff7a10) at closef+0x263 sys/kern/kern_descrip.c:1265
fdfree(ffff800045ff7a10) at fdfree+0x16d sys/kern/kern_descrip.c:1203
exit1(ffff800045ff7a10,0,0,1) at exit1+0x81e sys/kern/kern_exit.c:217
sys_exit(ffff800045ff7a10,ffff800036ef8d60,ffff800036ef8cc0) at sys_exit+0x4a
syscall(ffff800036ef8d60) at syscall+0x1089 mi_syscall sys/sys/syscall_mi.h:176 [inline]
syscall(ffff800036ef8d60) at syscall+0x1089 sys/arch/amd64/amd64/trap.c:783
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x762a08a9f7a0, count: -17
ddb{1}> show registers
rdi 0
rsi 0x1
rbp 0xffff800036ef84f0
rbx 0xffff800036ef8560
rdx 0
rcx 0xffff800028fe3ff0
rax 0
r8 0x101010101010101
r9 0x8080808080808080
r10 0xffff800036ef82d8
r11 0xffffffff83dc1190 x86_bus_space_io_read_1
r12 0xffffffff846387ee .str.34+0x9d60e
r13 0xffff800028fe4c08
r14 0xffff800028fe4e07
r15 0x1
rip 0xffffffff81fcf3c7 db_enter+0x17
cs 0x8
rflags 0x246
rsp 0xffff800036ef84f0
ss 0x10
db_enter+0x17: popq %rbp
ddb{1}> show proc
PROC (syz-executor) tid=121774 pid=92754 tcnt=0 stat=onproc
flags process=1008<EXITING,SINGLEEXIT> proc=2000<WEXIT>
runpri=26, usrpri=58, slppri=26, nice=20
wchan=0x0, wmesg=, ps_single=0xffff800045ff7a10 scnt=-1 ecnt=1
forw=0xffffffffffffffff, list=0xffff800029932d10,0xffff800045ff7cb8
process=0xffff800045ffa698 user=0xffff800036eed000, vmspace=0xffff800001ca59a8
estcpu=8, cpticks=29, pctcpu=0.0, user=0, sys=26, intr=0
ddb{1}> ps
PID TID PPID UID S PRLAGS PFLAGS WAIT COMMAND
29597 397824 16311 0 2 0 0 syz-executor
95671 158602 57492 0 2 0 0 syz-executor
95671 73136 57492 0 3 0 0x4000000 smrbar syz-executor
40854 138852 6860 0 7 0 0 syz-executor
40854 37450 6860 0 3 0 0x4000080 kqsel syz-executor
40854 402065 6860 0 3 0 0x4000080 kqread syz-executor
40854 7538 6860 0 3 0 0x4000080 fsleep syz-executor
15539 171739 58557 0 2 0x10 0xc80 syz-executor
15539 447985 58557 0 3 0x10 0x4000080 kqsel syz-executor
15539 56442 58557 0 3 0x10 0x4000080 fsleep syz-executor
98401 115591 1 0 3 0x100003 0x80 ttyin getty
34657 139568 0 0 3 0x14000 0x200 acct acct
862 156671 29725 0 3 0x100002 0x80 sbwait ndp
29725 143892 46317 0 3 0x100002 0x88 sigsusp sh
46317 178899 2922 0 3 0x2 0x80 wait syz-executor
67513 33480 2922 0 3 0x2 0x80 wait syz-executor
57492 142579 2922 0 3 0x2 0x80 nanoslp syz-executor
16311 98981 2922 0 3 0x2 0x80 nanoslp syz-executor
6860 401738 2922 0 2 0x2 0xc80 syz-executor
58557 23699 2922 0 2 0x2 0xc80 syz-executor
93935 315602 2922 0 2 0x2 0xc80 syz-executor
50148 342872 2922 0 3 0x2 0x80 wait syz-executor
2922 397849 1 0 3 0x2 0x80 kqread syz-executor
29593 336632 1 0 3 0x2 0x88 kqread sshd
64341 8375 38713 74 3 0x1100012 0x80 bpf pflogd
38713 17790 1 0 3 0 0x80 sbwait pflogd
16161 23223 35381 73 3 0x1100010 0x80 kqread syslogd
35381 225508 1 0 3 0x100002 0x80 sbwait syslogd
17193 325089 1 0 3 0x100000 0x80 kqread resolvd
54283 243465 42580 77 3 0x100012 0x80 kqread dhcpleased
34588 270921 42580 77 3 0x100012 0x80 kqread dhcpleased
42580 294403 1 0 3 0 0x80 kqread dhcpleased
42607 207278 0 0 3 0x14000 0x200 pause smr
43022 209190 0 0 3 0x14000 0x200 pgzero zerothread
35883 516706 0 0 3 0x14000 0x200 aiodoned aiodoned
92740 380795 0 0 3 0x14000 0x200 syncer update
59697 247647 0 0 3 0x14000 0x200 cleaner cleaner
16974 346392 0 0 3 0x14000 0x200 reaper reaper
51923 277868 0 0 3 0x14000 0x200 pgdaemon pagedaemon
89611 369960 0 0 3 0x14000 0x200 bored viomb
39914 415278 0 0 3 0x14000 0x40000200 acpi0 acpi0
81279 277433 0 0 3 0x14000 0x40000200 idle1
72808 198820 0 0 3 0x14000 0x200 bored softnet1
3035 132499 0 0 2 0x14000 0x200 softnet0
94686 236656 0 0 3 0x14000 0x200 bored systqmp
71314 211626 0 0 3 0x14000 0x200 bored systq
34490 521907 0 0 3 0x14000 0x200 tmoslp softclockmp
47331 96247 0 0 3 0x14000 0x40000200 tmoslp softclock
40417 66040 0 0 3 0x14000 0x40000200 idle0
1 174525 0 0 3 0x2 0x80 wait init
0 0 -1 0 3 0x10000 0x200 scheduler swapper
ddb{1}> show all locks
Process 40854 (syz-executor) thread 0xffff800045ff5cb0 (138852)
exclusive rwlock uobjlk r = 0 (0xffff800001b74ec8)
#0 witness_lock+0x632 stacktrace_save sys/sys/stacktrace.h:37 [inline]
#0 witness_lock+0x632 sys/kern/subr_witness.c:1160
#1 rw_do_enter_write+0x53e sys/kern/kern_rwlock.c:320
#2 uvm_fault+0x333 sys/uvm/uvm_fault.c:649
#3 upageflttrap+0xe0 sys/arch/amd64/amd64/trap.c:192
#4 usertrap+0x4f9 sys/arch/amd64/amd64/trap.c:640
#5 recall_trap+0x8
shared rwlock vmmaplk r = 0 (0xffff800001ca56d8)
#0 witness_lock+0x632 stacktrace_save sys/sys/stacktrace.h:37 [inline]
#0 witness_lock+0x632 sys/kern/subr_witness.c:1160
#1 rw_do_enter_read+0x55d sys/kern/kern_rwlock.c:413
#2 uvmfault_lookup+0x1a2 sys/uvm/uvm_fault.c:-1
#3 uvm_fault_check+0x43 sys/uvm/uvm_fault.c:693
#4 uvm_fault+0x1e7 sys/uvm/uvm_fault.c:627
#5 upageflttrap+0xe0 sys/arch/amd64/amd64/trap.c:192
#6 usertrap+0x4f9 sys/arch/amd64/amd64/trap.c:640
#7 recall_trap+0x8
ddb{1}> show malloc
Type InUse MemUse HighUse Limit Requests Type Lim
devbuf 11075 12309K 12548K 166960K 12369 0
pcb 17 24K 24K 166960K 33 0
rtable 155 16K 19K 166960K 369 0
pf 32 21K 38K 166960K 57 0
ifaddr 30 7K 12K 166960K 48 0
ifgroup 51 2K 2K 166960K 68 0
sysctl 2 1K 13K 166960K 8 0
counters 68 42K 42K 166960K 76 0
ioctlops 0 0K 4K 166960K 1638 0
iov 0 0K 16K 166960K 2 0
mount 1 1K 1K 166960K 1 0
log 0 0K 0K 166960K 4 0
vnodes 1301 84K 84K 166960K 1523 0
UFS quota 1 36K 36K 166960K 1 0
UFS mount 5 44K 44K 166960K 5 0
shm 2 2K 6K 166960K 7 0
VM map 2 1K 1K 166960K 2 0
sem 9 0K 1K 166960K 12 0
dirhash 12 2K 2K 166960K 12 0
ACPI 1734 201K 292K 166960K 11964 0
file desc 19 69K 97K 166960K 242 0
sigio 0 0K 0K 166960K 2 0
proc 70 128K 177K 166960K 565 0
subproc 72 9K 9K 166960K 72 0
NFS srvsock 1 0K 0K 166960K 1 0
NFS daemon 1 20K 20K 166960K 1 0
ip_moptions 2 0K 0K 166960K 6 0
in_multi 56 4K 7K 166960K 100 0
ether_multi 1 0K 0K 166960K 1 0
mrt 0 0K 0K 166960K 7 0
ISOFS mount 1 36K 36K 166960K 1 0
MSDOSFS mount 1 20K 20K 166960K 1 0
ttys 97 668K 668K 166960K 97 0
exec 0 0K 2K 166960K 402 0
fusefs mount 1 36K 36K 166960K 1 0
tdb 3 1K 1K 166960K 3 0
VM swap 14 124K 124K 166960K 15 0
UVM amap 225 224K 256K 166960K 4122 0
UVM aobj 11 4K 4K 166960K 11 0
pinsyscall 1064 1758K 1758K 166960K 1438 0
memdesc 1 4K 4K 166960K 1 0
crypto data 1 1K 1K 166960K 1 0
ip6_options 0 0K 0K 166960K 1 0
NDP 11 0K 1K 166960K 31 0
temp 36 9166K 9176K 166960K 9714 0
kqueue 11 32K 64K 166960K 53 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 37 0 33 1 0 1 1 0 8 0
rtentry 176 111 0 45 5 0 5 5 0 8 0
unpcb 144 136 0 120 2 0 2 2 0 8 1
syncache 336 4 0 4 2 2 0 1 0 8 0
tcpcb 736 53 0 50 4 0 4 4 0 8 3
arp 136 18 0 8 1 0 1 1 0 8 0
inpcb 328 174 0 163 4 0 4 4 0 8 2
nd6 152 24 0 12 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 1429 0 1005 5 0 5 5 0 8 0
pfosfpen 112 1429 0 714 21 0 21 21 0 8 0
pfstitem 24 35 0 0 1 0 1 1 0 8 0
pfstkey 128 35 0 0 2 0 2 2 0 8 0
pfstate 448 35 0 0 4 0 4 4 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 256 453 0 176 29 0 29 29 0 8 7
art_table 40 454 0 176 5 0 5 5 0 8 0
art_node 32 111 0 51 1 0 1 1 0 8 0
semupl 112 2 0 2 1 0 1 1 0 8 1
semapl 72 9 0 2 1 0 1 1 0 8 0
shmpl 112 8 0 0 1 0 1 1 0 8 0
dirhash 1024 17 0 0 3 0 3 3 0 8 0
dino2pl 256 1817 0 345 93 0 93 93 0 8 0
ffsino 296 1817 0 345 114 0 114 114 0 8 0
nchpl 144 2145 0 437 64 0 64 64 0 8 0
vnodes 216 1975 0 0 110 0 110 110 0 8 0
namei 1024 6975 0 6975 1 0 1 1 0 8 1
percpumem 16 54 0 4 1 0 1 1 0 8 0
kstatmem 264 35 0 8 2 0 2 2 0 8 0
scxspl 216 7488 0 7488 3 2 1 2 1 8 1
plimitpl 152 43 0 27 1 0 1 1 0 8 0
sigapl 424 571 0 524 7 0 7 7 0 8 0
knotepl 120 69 0 0 3 0 3 3 0 8 0
kqueuepl 224 61 0 51 1 0 1 1 0 8 0
pipepl 344 148 0 121 3 0 3 3 0 8 0
fdescpl 528 554 0 524 3 0 3 3 0 8 0
filepl 160 2639 0 2414 13 0 13 13 0 8 1
lockfpl 104 51 0 47 1 0 1 1 0 8 0
lockfspl 48 26 0 22 1 0 1 1 0 8 0
sessionpl 144 69 0 61 1 0 1 1 0 8 0
pgrppl 48 77 0 61 1 0 1 1 0 8 0
ucredpl 104 453 0 439 1 0 1 1 0 8 0
zombiepl 144 527 0 524 1 0 1 1 0 8 0
processpl 1232 571 0 524 5 0 5 5 0 8 0
procpl 664 750 0 697 6 0 6 6 0 8 0
sosppl 176 2 0 2 1 0 1 1 0 8 1
sockpl 752 350 0 319 7 0 7 7 0 8 2
mcl64k 65536 10 0 0 2 0 2 2 0 8 0
mcl16k 16384 4 0 0 1 0 1 1 0 8 0
mcl12k 12288 1 0 0 1 0 1 1 0 8 0
mcl9k128 9344 3 0 0 1 0 1 1 0 8 0
mcl8k 8192 5 0 0 1 0 1 1 0 8 0
mcl4k 4096 113 0 0 15 0 15 15 0 8 0
mcl2k2 2112 1 0 0 1 0 1 1 0 8 0
mcl2k 2048 27 0 0 4 0 4 4 0 8 0
mextrefs 64 30 0 0 1 0 1 1 0 8 0
mtagpl 96 2 0 0 1 0 1 1 0 8 0
mbufpl 256 219 0 0 14 0 14 14 0 8 0
bufpl 272 2527 0 106 162 0 162 162 0 8 0
anonpl 32 4495 0 0 37 0 37 37 0 222 0
amapchunkpl 152 11760 0 11320 26 0 26 26 0 158 6
amappl16 200 1866 0 1844 5 3 2 5 0 8 0
amappl15 192 25 0 24 3 2 1 1 0 8 0
amappl14 184 486 0 485 1 0 1 1 0 8 0
amappl13 176 131 0 120 1 0 1 1 0 8 0
amappl12 168 825 0 797 2 0 2 2 0 8 0
amappl11 160 30 0 30 1 1 0 1 0 8 0
amappl10 152 71 0 56 1 0 1 1 0 8 0
amappl9 144 278 0 278 1 1 0 1 0 8 0
amappl8 136 101 0 99 1 0 1 1 0 8 0
amappl7 128 155 0 142 1 0 1 1 0 8 0
amappl6 120 169 0 168 1 0 1 1 0 8 0
amappl5 112 146 0 135 1 0 1 1 0 8 0
amappl4 104 328 0 306 1 0 1 1 0 8 0
amappl3 96 2167 0 2062 4 0 4 4 0 8 0
amappl2 88 584 0 532 2 0 2 2 0 8 0
amappl1 80 11346 0 10879 15 0 15 15 0 8 3
amappl 88 3345 0 3191 4 0 4 4 0 92 0
uvmvnodes 80 102 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 10 0 0 1 0 1 1 0 8 0
uaddrrnd 24 554 0 524 1 0 1 1 0 8 0
uaddrbest 32 2 0 0 1 0 1 1 0 8 0
uaddr 24 554 0 524 1 0 1 1 0 8 0
vmmpekpl 168 6737 0 6701 2 0 2 2 0 8 0
vmmpepl 168 45223 0 43546 89 0 89 89 0 357 10
vmsppl 488 553 0 524 5 0 5 5 0 8 0
rwobjpl 80 16266 0 15322 25 1 24 24 0 8 0
pdppl 4096 1117 0 1048 105 34 71 89 0 8 2
pvpl 32 12792 0 0 105 1 104 104 0 265 0
pmappl 256 553 0 524 3 0 3 3 0 8 0
extentpl 40 47 0 29 1 0 1 1 0 8 0
phpool 120 449 0 39 13 0 13 13 0 8 0
ddb{1}> machine ddbcpu 0
Stopped at x86_ipi_db+0x19: leave
x86_ipi_db(ffffffff851d2ff0) 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(ffffffff85442080) at __mp_lock+0x272 __mp_lock_spin sys/kern/kern_lock.c:142 [inline]
__mp_lock(ffffffff85442080) at __mp_lock+0x272 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
__mp_lock(ffffffff85442080) at __mp_lock+0x272 __mp_lock_spin sys/kern/kern_lock.c:142 [inline]
__mp_lock(ffffffff85442080) at __mp_lock+0x272 sys/kern/kern_lock.c:173
uvm_fault(ffff800001ca55d8,f8e1651e000,0,1) at uvm_fault+0x338 sys/uvm/uvm_fault.c:650
upageflttrap(ffff800036eecae0,f8e1651e000) at upageflttrap+0xe0 sys/arch/amd64/amd64/trap.c:192
usertrap(ffff800036eecae0) at usertrap+0x4f9 sys/arch/amd64/amd64/trap.c:640
recall_trap() at recall_trap+0x8
end of kernel
end trace frame: 0x70c579116760, count: 3
ddb{0}> trace
x86_ipi_db(ffffffff851d2ff0) 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(ffffffff85442080) at __mp_lock+0x272 __mp_lock_spin sys/kern/kern_lock.c:142 [inline]
__mp_lock(ffffffff85442080) at __mp_lock+0x272 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
__mp_lock(ffffffff85442080) at __mp_lock+0x272 __mp_lock_spin sys/kern/kern_lock.c:142 [inline]
__mp_lock(ffffffff85442080) at __mp_lock+0x272 sys/kern/kern_lock.c:173
uvm_fault(ffff800001ca55d8,f8e1651e000,0,1) at uvm_fault+0x338 sys/uvm/uvm_fault.c:650
upageflttrap(ffff800036eecae0,f8e1651e000) at upageflttrap+0xe0 sys/arch/amd64/amd64/trap.c:192
usertrap(ffff800036eecae0) at usertrap+0x4f9 sys/arch/amd64/amd64/trap.c:640
recall_trap() at recall_trap+0x8
end of kernel
end trace frame: 0x70c579116760, count: -12
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(ffffffff846387ee) at panic+0x270 sys/kern/subr_prf.c:198
__asan_load4_noabort(ffff800001d1f5d4) at __asan_load4_noabort+0xa3
igmp_leavegroup(ffff800000172500,ffff800001731000,ffff800036ef8700) at igmp_leavegroup+0x127 sys/netinet/igmp.c:583
in_delmulti(ffff800000172500) at in_delmulti+0x10f sys/netinet/in.c:963
ip_freemoptions(ffff800001cf0620) at ip_freemoptions+0x9f sys/netinet/ip_output.c:-1
in_pcbdetach(ffff800001d56cd8) at in_pcbdetach+0x187 sys/netinet/in_pcb.c:605
rip_detach(ffff800001cb11b8) at rip_detach+0x72 sys/netinet/raw_ip.c:509
soclose(ffff800001cb11b8,0) at soclose+0x10a pru_detach sys/sys/protosw.h:281 [inline]
soclose(ffff800001cb11b8,0) at soclose+0x10a sys/kern/uipc_socket.c:403
soo_close(ffff800001d147c8,ffff800045ff7a10) at soo_close+0x72 sys/kern/sys_socket.c:169
fdrop(ffff800001d147c8,ffff800045ff7a10) at fdrop+0x1c3 sys/kern/kern_descrip.c:1281
closef(ffff800001d147c8,ffff800045ff7a10) at closef+0x263 sys/kern/kern_descrip.c:1265
fdfree(ffff800045ff7a10) at fdfree+0x16d sys/kern/kern_descrip.c:1203
exit1(ffff800045ff7a10,0,0,1) at exit1+0x81e sys/kern/kern_exit.c:217
end trace frame: 0xffff800036ef8bd0, count: 0
ddb{1}> trace
db_enter() at db_enter+0x17 sys/arch/amd64/amd64/db_interface.c:457
panic(ffffffff846387ee) at panic+0x270 sys/kern/subr_prf.c:198
__asan_load4_noabort(ffff800001d1f5d4) at __asan_load4_noabort+0xa3
igmp_leavegroup(ffff800000172500,ffff800001731000,ffff800036ef8700) at igmp_leavegroup+0x127 sys/netinet/igmp.c:583
in_delmulti(ffff800000172500) at in_delmulti+0x10f sys/netinet/in.c:963
ip_freemoptions(ffff800001cf0620) at ip_freemoptions+0x9f sys/netinet/ip_output.c:-1
in_pcbdetach(ffff800001d56cd8) at in_pcbdetach+0x187 sys/netinet/in_pcb.c:605
rip_detach(ffff800001cb11b8) at rip_detach+0x72 sys/netinet/raw_ip.c:509
soclose(ffff800001cb11b8,0) at soclose+0x10a pru_detach sys/sys/protosw.h:281 [inline]
soclose(ffff800001cb11b8,0) at soclose+0x10a sys/kern/uipc_socket.c:403
soo_close(ffff800001d147c8,ffff800045ff7a10) at soo_close+0x72 sys/kern/sys_socket.c:169
fdrop(ffff800001d147c8,ffff800045ff7a10) at fdrop+0x1c3 sys/kern/kern_descrip.c:1281
closef(ffff800001d147c8,ffff800045ff7a10) at closef+0x263 sys/kern/kern_descrip.c:1265
fdfree(ffff800045ff7a10) at fdfree+0x16d sys/kern/kern_descrip.c:1203
exit1(ffff800045ff7a10,0,0,1) at exit1+0x81e sys/kern/kern_exit.c:217
sys_exit(ffff800045ff7a10,ffff800036ef8d60,ffff800036ef8cc0) at sys_exit+0x4a
syscall(ffff800036ef8d60) at syscall+0x1089 mi_syscall sys/sys/syscall_mi.h:176 [inline]
syscall(ffff800036ef8d60) at syscall+0x1089 sys/arch/amd64/amd64/trap.c:783
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x762a08a9f7a0, count: -17
ddb{1}>