Hello,
syzbot found the following issue on:
HEAD commit: 17ba98042263 Skip dmetric related code for the Adj-RIB-Out..
git tree: openbsd
console output:
https://syzkaller.appspot.com/x/log.txt?x=13461514080000
kernel config:
https://syzkaller.appspot.com/x/.config?x=7058272de1526588
dashboard link:
https://syzkaller.appspot.com/bug?extid=813ed08b74a7149d6e7e
Unfortunately, I don't have any reproducer for this issue yet.
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by:
syzbot+813ed0...@syzkaller.appspotmail.com
panic: pool_do_get: fdescpl free list modified: page 0xfffffd806f1bb000; item addr 0xfffffd806f1bb7c8; offset 0x48=0xdeaf4153
Stopped at db_enter+0x18: addq $0x8,%rsp
TID PID UID PRFLAGS PFLAGS CPU COMMAND
14573 20228 32767 0x10 0 0 syz-executor.0
* 77936 56232 32767 0x10 0 1K syz-executor.2
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:437
panic(ffffffff825fc769) at panic+0x177 sys/kern/subr_prf.c:202
pool_do_get(ffffffff82b9c2c8,9,ffff8000261bc218) at pool_do_get+0x474 sys/kern/subr_pool.c:741
pool_get(ffffffff82b9c2c8,9) at pool_get+0xe9 sys/kern/subr_pool.c:584
fdcopy(ffff8000ffff2578) at fdcopy+0x44 fdinit sys/kern/kern_descrip.c:1072 [inline]
fdcopy(ffff8000ffff2578) at fdcopy+0x44 sys/kern/kern_descrip.c:1111
process_new(ffff800029c54a90,ffff8000ffff2578,1) at process_new+0x13b sys/kern/kern_fork.c:259
fork1(ffff8000fffefce0,1,ffffffff82077b80,0,ffff8000261bc440,0) at fork1+0x30b sys/kern/kern_fork.c:383
syscall(ffff8000261bc4c0) at syscall+0x435 mi_syscall sys/sys/syscall_mi.h:101 [inline]
syscall(ffff8000261bc4c0) at syscall+0x435 sys/arch/amd64/amd64/trap.c:585
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7f7ffffd8720, count: 6
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: pool_do_get: fdescpl free list modified: page 0xfffffd806f1bb000; item addr 0xfffffd806f1bb7c8; offset 0x48=0xdeaf4153
ddb{1}> trace
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:437
panic(ffffffff825fc769) at panic+0x177 sys/kern/subr_prf.c:202
pool_do_get(ffffffff82b9c2c8,9,ffff8000261bc218) at pool_do_get+0x474 sys/kern/subr_pool.c:741
pool_get(ffffffff82b9c2c8,9) at pool_get+0xe9 sys/kern/subr_pool.c:584
fdcopy(ffff8000ffff2578) at fdcopy+0x44 fdinit sys/kern/kern_descrip.c:1072 [inline]
fdcopy(ffff8000ffff2578) at fdcopy+0x44 sys/kern/kern_descrip.c:1111
process_new(ffff800029c54a90,ffff8000ffff2578,1) at process_new+0x13b sys/kern/kern_fork.c:259
fork1(ffff8000fffefce0,1,ffffffff82077b80,0,ffff8000261bc440,0) at fork1+0x30b sys/kern/kern_fork.c:383
syscall(ffff8000261bc4c0) at syscall+0x435 mi_syscall sys/sys/syscall_mi.h:101 [inline]
syscall(ffff8000261bc4c0) at syscall+0x435 sys/arch/amd64/amd64/trap.c:585
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7f7ffffd8720, count: -9
ddb{1}> show registers
rdi 0
rsi 0x1
rbp 0xffff8000261bc060
rbx 0xffff800020de9bb7
rdx 0
rcx 0
rax 0xffff8000fffefce0
r8 0x101010101010101
r9 0x8080808080808080
r10 0xb37e02f06eb42e97
r11 0x817be7c652c50b77
r12 0xffff800020de99b8
r13 0
r14 0
r15 0x1
rip 0xffffffff811c3b98 db_enter+0x18
cs 0x8
rflags 0x246
rsp 0xffff8000261bc050
ss 0x10
db_enter+0x18: addq $0x8,%rsp
ddb{1}> show proc
PROC (syz-executor.2) pid=77936 stat=onproc
flags process=10<SUGID> proc=0
pri=80, usrpri=81, nice=20
forw=0xffffffffffffffff, list=0xffff8000fffee2a0,0xffff8000fffecfd8
process=0xffff8000ffff2578 user=0xffff8000261b7000, vmspace=0xfffffd8008746730
estcpu=31, cpticks=2, pctcpu=0.0
user=0, sys=2, intr=0
ddb{1}> ps
PID TID PPID UID S FLAGS WAIT COMMAND
2552 132380 67708 32767 2 0x10 syz-executor.4
18419 250147 57337 32767 2 0x10 syz-executor.5
70209 314071 23487 32767 2 0x10 syz-executor.3
20228 14573 86294 32767 7 0x10 syz-executor.0
61979 64152 648 32767 2 0x10 syz-executor.7
17813 98821 9602 32767 3 0x90 nanoslp syz-executor.1
17813 346955 9602 32767 3 0x4000090 fsleep syz-executor.1
17813 316124 9602 32767 3 0x4000010 fdlock syz-executor.1
23487 77074 26484 32767 3 0x90 nanoslp syz-executor.3
26484 255007 30510 0 3 0x82 wait syz-executor.3
67708 319221 11462 32767 3 0x90 nanoslp syz-executor.4
11462 24028 30510 0 3 0x82 wait syz-executor.4
86294 125476 64464 32767 3 0x90 nanoslp syz-executor.0
64464 369758 30510 0 3 0x82 wait syz-executor.0
648 380294 3806 32767 2 0x10 syz-executor.7
3806 287286 30510 0 3 0x82 wait syz-executor.7
57337 516750 47778 32767 3 0x90 nanoslp syz-executor.5
47778 121389 30510 0 3 0x82 wait syz-executor.5
80829 456826 0 0 3 0x14200 bored sosplice
47359 155855 47355 32767 3 0x10 biowait syz-executor.6
47355 239663 30510 0 3 0x82 wait syz-executor.6
*56232 77936 53215 32767 7 0x10 syz-executor.2
9602 482947 69437 32767 3 0x90 nanoslp syz-executor.1
53215 269195 30510 0 3 0x82 wait syz-executor.2
69437 142597 30510 0 3 0x82 wait syz-executor.1
30510 362660 23138 0 3 0x82 thrsleep syz-fuzzer
30510 344671 23138 0 3 0x4000082 nanoslp syz-fuzzer
30510 378366 23138 0 3 0x4000082 kqread syz-fuzzer
30510 170575 23138 0 3 0x4000082 thrsleep syz-fuzzer
30510 35962 23138 0 3 0x4000082 thrsleep syz-fuzzer
30510 163621 23138 0 3 0x4000082 thrsleep syz-fuzzer
30510 193164 23138 0 3 0x4000082 thrsleep syz-fuzzer
30510 273658 23138 0 3 0x4000082 thrsleep syz-fuzzer
23138 468970 13642 0 3 0x10008a sigsusp ksh
13642 36827 84831 0 3 0x9a kqread sshd
76774 287412 1 0 3 0x100083 ttyin getty
84831 270308 1 0 3 0x88 kqread sshd
81476 53006 83105 73 3 0x1100090 kqread syslogd
83105 76050 1 0 3 0x100082 netio syslogd
6699 266649 1 0 3 0x100080 kqread resolvd
86709 19505 33525 77 3 0x100092 kqread dhcpleased
55700 122281 33525 77 3 0x100092 kqread dhcpleased
33525 433981 1 0 3 0x80 kqread dhcpleased
92013 501466 0 0 3 0x14200 bored smr
40482 225232 0 0 2 0x14200 zerothread
56994 147412 0 0 3 0x14200 aiodoned aiodoned
24466 401385 0 0 3 0x14200 syncer update
36435 302382 0 0 3 0x14200 cleaner cleaner
60138 241033 0 0 3 0x14200 reaper reaper
19467 17599 0 0 3 0x14200 pgdaemon pagedaemon
99969 477601 0 0 3 0x14200 bored viomb
143 146643 0 0 3 0x40014200 acpi0 acpi0
38394 460086 0 0 3 0x40014200 idle1
89327 72053 0 0 3 0x14200 bored softnet
57212 155643 0 0 3 0x14200 bored softnet
67000 223982 0 0 3 0x14200 bored softnet
72622 227914 0 0 3 0x14200 bored softnet
65725 10535 0 0 3 0x14200 bored systqmp
7955 399793 0 0 3 0x14200 bored systq
67122 332374 0 0 3 0x40014200 bored softclock
61394 238891 0 0 3 0x40014200 idle0
1 362227 0 0 3 0x82 wait init
0 0 -1 0 3 0x10200 scheduler swapper
ddb{1}> show all locks
CPU 1:
exclusive mutex fdescpl r = 0 (0xffffffff82b9c2d8)
#0 witness_lock+0x44d
#1 mtx_enter_try+0x100
#2 mtx_enter+0x4b sys/kern/kern_lock.c:266
#3 pool_get+0xbd sys/kern/subr_pool.c:581
#4 fdcopy+0x44 fdinit sys/kern/kern_descrip.c:1072 [inline]
#4 fdcopy+0x44 sys/kern/kern_descrip.c:1111
#5 process_new+0x13b sys/kern/kern_fork.c:259
#6 fork1+0x30b sys/kern/kern_fork.c:383
#7 syscall+0x435 mi_syscall sys/sys/syscall_mi.h:101 [inline]
#7 syscall+0x435 sys/arch/amd64/amd64/trap.c:585
#8 Xsyscall+0x128
Process 20228 (syz-executor.0) thread 0xffff8000fffeed20 (14573)
exclusive rwlock uobjlk r = 0 (0xfffffd806d825398)
#0 witness_lock+0x44d
#1 rw_enter+0x3e1 sys/kern/kern_rwlock.c:310
#2 uvm_fault_lower_lookup+0x46 sys/uvm/uvm_fault.c:1126
#3 uvm_fault_lower+0x5f sys/uvm/uvm_fault.c:1227
#4 uvm_fault+0x238
#5 upageflttrap+0x82 sys/arch/amd64/amd64/trap.c:181
#6 usertrap+0x1aa sys/arch/amd64/amd64/trap.c:403
#7 recall_trap+0x8
shared rwlock vmmaplk r = 0 (0xfffffd8074bb3ba8)
#0 witness_lock+0x44d
#1 uvmfault_lookup+0xd9 sys/uvm/uvm_fault.c:1771
#2 uvm_fault_check+0x3a sys/uvm/uvm_fault.c:673
#3 uvm_fault+0xf2 sys/uvm/uvm_fault.c:601
#4 upageflttrap+0x82 sys/arch/amd64/amd64/trap.c:181
#5 usertrap+0x1aa sys/arch/amd64/amd64/trap.c:403
#6 recall_trap+0x8
Process 17813 (syz-executor.1) thread 0xffff800029c577b0 (316124)
exclusive rwlock sysctllk r = 0 (0xffffffff8295baf0)
#0 witness_lock+0x44d
#1 rw_enter+0x3e1 sys/kern/kern_rwlock.c:310
#2 sys_sysctl+0x1b3 sys/kern/kern_sysctl.c:233
#3 syscall+0x435 mi_syscall sys/sys/syscall_mi.h:101 [inline]
#3 syscall+0x435 sys/arch/amd64/amd64/trap.c:585
#4 Xsyscall+0x128
Process 47359 (syz-executor.6) thread 0xffff8000fffee7e0 (155855)
exclusive rrwlock inode r = 0 (0xfffffd80627a65e8)
#0 witness_lock+0x44d
#1 rw_enter+0x3e1 sys/kern/kern_rwlock.c:310
#2 rrw_enter+0x8b sys/kern/kern_rwlock.c:465
#3 VOP_LOCK+0x87 sys/kern/vfs_vops.c:518
#4 ufs_ihashins+0x42 sys/ufs/ufs/ufs_ihash.c:140
#5 ffs_vget+0x141 sys/ufs/ffs/ffs_vfsops.c:1347
#6 ffs_inode_alloc+0x1be sys/ufs/ffs/ffs_alloc.c:394
#7 ufs_mkdir+0xf4 sys/ufs/ufs/ufs_vnops.c:1150
#8 VOP_MKDIR+0xbf sys/kern/vfs_vops.c:388
#9 domkdirat+0x121 sys/kern/vfs_syscalls.c:3116
#10 syscall+0x435 mi_syscall sys/sys/syscall_mi.h:101 [inline]
#10 syscall+0x435 sys/arch/amd64/amd64/trap.c:585
#11 Xsyscall+0x128
exclusive rrwlock inode r = 0 (0xfffffd80655b50a0)
#0 witness_lock+0x44d
#1 rw_enter+0x3e1 sys/kern/kern_rwlock.c:310
#2 rrw_enter+0x8b sys/kern/kern_rwlock.c:465
#3 VOP_LOCK+0x87 sys/kern/vfs_vops.c:518
#4 vn_lock+0x84 sys/kern/vfs_vnops.c:567
#5 vfs_lookup+0xd1 sys/kern/vfs_lookup.c:413
#6 namei+0x36a sys/kern/vfs_lookup.c:245
#7 domkdirat+0x75 sys/kern/vfs_syscalls.c:3101
#8 syscall+0x435 mi_syscall sys/sys/syscall_mi.h:101 [inline]
#8 syscall+0x435 sys/arch/amd64/amd64/trap.c:585
#9 Xsyscall+0x128
Process 56232 (syz-executor.2) thread 0xffff8000fffefce0 (77936)
exclusive kernel_lock &kernel_lock r = 0 (0xffffffff82b6cfc8)
#0 witness_lock+0x44d
#1 syscall+0x41d mi_syscall sys/sys/syscall_mi.h:100 [inline]
#1 syscall+0x41d sys/arch/amd64/amd64/trap.c:585
#2 Xsyscall+0x128
exclusive mutex fdescpl r = 0 (0xffffffff82b9c2d8)
#0 witness_lock+0x44d
#1 mtx_enter_try+0x100
#2 mtx_enter+0x4b sys/kern/kern_lock.c:266
#3 pool_get+0xbd sys/kern/subr_pool.c:581
#4 fdcopy+0x44 fdinit sys/kern/kern_descrip.c:1072 [inline]
#4 fdcopy+0x44 sys/kern/kern_descrip.c:1111
#5 process_new+0x13b sys/kern/kern_fork.c:259
#6 fork1+0x30b sys/kern/kern_fork.c:383
#7 syscall+0x435 mi_syscall sys/sys/syscall_mi.h:101 [inline]
#7 syscall+0x435 sys/arch/amd64/amd64/trap.c:585
#8 Xsyscall+0x128
ddb{1}> show malloc
Type InUse MemUse HighUse Limit Requests Type Lim
devbuf 10210 6412K 6419K 78643K 11341 0
pcb 13 12K 14K 78643K 17 0
rtable 240 6K 7K 78643K 1978 0
ifaddr 81 17K 17K 78643K 174 0
sysctl 3 1K 5K 78643K 13 0
counters 56 35K 35K 78643K 82 0
ioctlops 0 0K 2K 78643K 303 0
iov 0 0K 28K 78643K 4201 0
mount 1 1K 1K 78643K 1 0
log 0 0K 0K 78643K 5 0
vnodes 1271 79K 79K 78643K 9548 0
UFS quota 1 32K 32K 78643K 1 0
UFS mount 5 36K 36K 78643K 5 0
shm 2 1K 9K 78643K 226 0
VM map 2 1K 1K 78643K 2 0
sem 12 1K 1K 78643K 486 0
dirhash 12 2K 2K 78643K 12 0
ACPI 1697 195K 286K 78643K 12548 0
file desc 24 89K 121K 78643K 26279 0
sigio 0 0K 0K 78643K 245 0
proc 56 78K 115K 78643K 2786 0
subproc 104 6K 6K 78643K 273 0
NFS srvsock 1 0K 0K 78643K 1 0
NFS daemon 1 16K 16K 78643K 1 0
ip_moptions 0 0K 0K 78643K 2960 0
in_multi 99 6K 7K 78643K 574 0
ether_multi 1 0K 0K 78643K 60 0
mrt 1 0K 0K 78643K 2 0
ISOFS mount 1 32K 32K 78643K 1 0
MSDOSFS mount 1 16K 16K 78643K 1 0
ttys 259 1155K 1155K 78643K 259 0
exec 0 0K 3K 78643K 4127 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 7 26K 26K 78643K 7 0
UVM amap 346 98K 116K 78643K 154914 0
UVM aobj 131 8K 8K 78643K 137 0
memdesc 1 4K 4K 78643K 1 0
crypto data 1 1K 1K 78643K 1 0
ip6_options 0 0K 0K 78643K 913 0
NDP 11 0K 2K 78643K 66 0
temp 125 4723K 4802K 78643K 64583 0
kqueue 12 18K 28K 78643K 2521 0
SYN cache 2 16K 16K 78643K 2 0
ddb{1}> show all pools
Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle
plcache 128 22 0 0 1 0 1 1 0 8 0
rtpcb 120 28837 0 28834 172 168 4 6 0 8 3
rtentry 112 285 0 172 4 0 4 4 0 8 0
unpcb 144 16861 0 16848 190 184 6 11 0 8 5
syncache 296 240 0 240 53 52 1 1 0 8 1
tcpqe 32 139 0 139 32 32 0 1 0 8 0
tcpcb 736 9688 0 9680 298 293 5 14 0 8 1
arp 120 51 0 31 1 0 1 1 0 8 0
ipq 40 38 0 38 4 4 0 1 0 8 0
ipqe 40 78 0 78 4 4 0 1 0 8 0
inpcb 320 22375 0 22357 404 396 8 17 0 8 4
nd6 48 87 0 62 1 0 1 1 0 8 0
kcovpl 48 21 0 13 1 0 1 1 0 8 0
art_heap8 4096 1 0 0 1 0 1 1 0 8 0
art_heap4 256 1096 0 633 39 9 30 30 0 8 0
art_table 32 1097 0 633 4 0 4 4 0 8 0
art_node 16 284 0 181 1 0 1 1 0 8 0
sysvmsgpl 40 16 0 8 1 0 1 1 0 8 0
semapl 112 481 0 471 1 0 1 1 0 8 0
shmpl 112 134 0 6 4 0 4 4 0 8 0
dirhash 1024 17 0 0 3 0 3 3 0 8 0
dino2pl 256 39706 0 38211 94 0 94 94 0 8 0
ffsino 272 39706 0 38211 100 0 100 100 0 8 0
nchpl 144 81649 0 80014 63 0 63 63 0 8 0
uvmvnodes 80 6193 0 0 127 0 127 127 0 8 0
vnodes 216 6193 0 0 345 0 345 345 0 8 0
namei 1024 280481 0 280480 14 13 1 2 0 8 0
percpumem 16 53 0 13 1 0 1 1 0 8 0
kstatmem 264 48 0 26 2 0 2 2 0 8 0
scxspl 216 221202 0 221201 82 79 3 8 0 8 2
plimitpl 152 4858 0 4836 19 18 1 2 0 8 0
sigapl 424 26531 0 26478 7 0 7 7 0 8 0
futexpl 64 223565 0 223564 13 12 1 1 0 8 0
knotepl 120 1570 0 0 16 6 10 14 0 8 0
kqueuepl 216 7200 0 7192 134 133 1 10 0 8 0
pipepl 320 4967 0 4939 144 138 6 9 0 8 3
fdescpl 496 26513 0 26478 7 2 5 6 0 8 0
pool(0xffffffff82b9c2c8:fdescpl): page inconsistency: page 0xfffffd806f1bb000; 0 on list, 7 missing, 8 items per page
filepl 152 218850 0 218616 368 353 15 23 0 8 5
lockfpl 104 10197 0 10195 4 3 1 2 0 8 0
lockfspl 48 2729 0 2727 1 0 1 1 0 8 0
sessionpl 144 36 0 20 1 0 1 1 0 8 0
pgrppl 48 1728 0 1712 1 0 1 1 0 8 0
ucredpl 104 50983 0 50965 1 0 1 1 0 8 0
zombiepl 144 26478 0 26478 1 0 1 1 0 8 1
processpl 1064 26532 0 26478 5 1 4 5 0 8 0
procpl 672 75209 0 75146 49 42 7 8 0 8 0
sosppl 168 430 0 429 56 55 1 1 0 8 0
sockpl 488 68985 0 68958 1296 1283 13 37 0 8 8
mcl64k 65536 65 0 0 5 2 3 3 0 8 0
mcl16k 16384 49 0 0 6 3 3 3 0 8 0
mcl12k 12288 55 0 0 2 0 2 2 0 8 0
mcl9k 9216 31 0 0 2 0 2 2 0 8 0
mcl8k 8192 58 0 0 4 1 3 3 0 8 0
mcl4k 4096 49 0 0 5 2 3 3 0 8 0
mcl2k2 2112 14 0 0 1 0 1 1 0 8 0
mcl2k 2048 677 0 0 21 2 19 21 0 8 0
mtagpl 96 3 0 0 1 0 1 1 0 8 0
mbufpl 256 10130 0 0 569 0 569 569 0 8 0
bufpl 288 45223 0 38892 453 0 453 453 0 8 0
anonpl 24 5284733 0 5272334 474 371 103 133 0 186 0
amapchunkpl 152 486165 0 485624 325 299 26 44 0 158 0
amappl16 200 81293 0 80926 424 398 26 42 0 8 4
amappl15 192 196 0 192 1 0 1 1 0 8 0
amappl14 184 1898 0 1893 1 0 1 1 0 8 0
amappl13 176 7364 0 7359 1 0 1 1 0 8 0
amappl12 168 3676 0 3668 1 0 1 1 0 8 0
amappl11 160 378 0 364 1 0 1 1 0 8 0
amappl10 152 5458 0 5452 1 0 1 1 0 8 0
amappl9 144 5450 0 5441 1 0 1 1 0 8 0
amappl8 136 4177 0 3993 8 1 7 7 0 8 0
amappl7 128 3000 0 2989 1 0 1 1 0 8 0
amappl6 120 5308 0 5279 5 3 2 2 0 8 1
amappl5 112 24294 0 24276 1 0 1 1 0 8 0
amappl4 104 1896 0 1857 2 0 2 2 0 8 0
amappl3 96 87621 0 87577 2 0 2 2 0 8 0
amappl2 88 38848 0 38773 3 1 2 3 0 8 0
amappl1 80 628982 0 628371 25 9 16 19 0 8 0
amappl 88 153210 0 153035 6 1 5 6 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 72 136 0 6 3 0 3 3 0 8 0
uaddrrnd 24 26513 0 26478 1 0 1 1 0 8 0
uaddrbest 32 2 0 0 1 0 1 1 0 8 0
uaddr 24 26513 0 26478 1 0 1 1 0 8 0
vmmpekpl 168 202455 0 202415 4 1 3 3 0 8 0
vmmpepl 168 2595550 0 2592882 491 350 141 152 0 357 7
vmsppl 368 26512 0 26478 4 0 4 4 0 8 0
rwobjpl 56 640231 0 632504 160 47 113 117 0 8 0
pdppl 4096 53033 0 52956 777 696 81 93 0 8 4
pvpl 32 10447074 0 10429599 991 805 186 255 0 265 13
pmappl 248 26512 0 26478 4 1 3 3 0 8 0
extentpl 40 58 0 38 1 0 1 1 0 8 0
phpool 112 2396 0 1023 40 0 40 40 0 8 0
ddb{1}> machine ddbcpu 0
Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp
x86_ipi_db(ffffffff829a3ff0) at x86_ipi_db+0x1a sys/arch/amd64/amd64/db_interface.c:393
x86_ipi_handler() at x86_ipi_handler+0xb7 sys/arch/amd64/amd64/ipi.c:106
Xresume_lapic_ipi() at Xresume_lapic_ipi+0x23
__mp_lock(ffffffff82b6cdc0) at __mp_lock+0x122 __mp_lock_spin sys/kern/kern_lock.c:116 [inline]
__mp_lock(ffffffff82b6cdc0) at __mp_lock+0x122 sys/kern/kern_lock.c:147
intr_handler(ffff8000295f7cb0,ffff80000067c180) at intr_handler+0x5e sys/arch/amd64/amd64/intr.c:532
Xintr_ioapic_edge24_untramp() at Xintr_ioapic_edge24_untramp+0x18f
__mp_lock(ffffffff82b6cdc0) at __mp_lock+0x129 __mp_lock_spin sys/kern/kern_lock.c:116 [inline]
__mp_lock(ffffffff82b6cdc0) at __mp_lock+0x129 sys/kern/kern_lock.c:147
intr_handler(ffff8000295f7e00,ffff80000004bd00) at intr_handler+0x5e sys/arch/amd64/amd64/intr.c:532
Xintr_ioapic_edge21_untramp() at Xintr_ioapic_edge21_untramp+0x18f
__mp_lock(ffffffff82b6cdc0) at __mp_lock+0x122 __mp_lock_spin sys/kern/kern_lock.c:116 [inline]
__mp_lock(ffffffff82b6cdc0) at __mp_lock+0x122 sys/kern/kern_lock.c:147
syscall(ffff8000295f7fd0) at syscall+0x41d mi_syscall sys/sys/syscall_mi.h:100 [inline]
syscall(ffff8000295f7fd0) at syscall+0x41d sys/arch/amd64/amd64/trap.c:585
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7f7ffffbffa0, count: 3
ddb{0}> trace
x86_ipi_db(ffffffff829a3ff0) at x86_ipi_db+0x1a sys/arch/amd64/amd64/db_interface.c:393
x86_ipi_handler() at x86_ipi_handler+0xb7 sys/arch/amd64/amd64/ipi.c:106
Xresume_lapic_ipi() at Xresume_lapic_ipi+0x23
__mp_lock(ffffffff82b6cdc0) at __mp_lock+0x122 __mp_lock_spin sys/kern/kern_lock.c:116 [inline]
__mp_lock(ffffffff82b6cdc0) at __mp_lock+0x122 sys/kern/kern_lock.c:147
intr_handler(ffff8000295f7cb0,ffff80000067c180) at intr_handler+0x5e sys/arch/amd64/amd64/intr.c:532
Xintr_ioapic_edge24_untramp() at Xintr_ioapic_edge24_untramp+0x18f
__mp_lock(ffffffff82b6cdc0) at __mp_lock+0x129 __mp_lock_spin sys/kern/kern_lock.c:116 [inline]
__mp_lock(ffffffff82b6cdc0) at __mp_lock+0x129 sys/kern/kern_lock.c:147
intr_handler(ffff8000295f7e00,ffff80000004bd00) at intr_handler+0x5e sys/arch/amd64/amd64/intr.c:532
Xintr_ioapic_edge21_untramp() at Xintr_ioapic_edge21_untramp+0x18f
__mp_lock(ffffffff82b6cdc0) at __mp_lock+0x122 __mp_lock_spin sys/kern/kern_lock.c:116 [inline]
__mp_lock(ffffffff82b6cdc0) at __mp_lock+0x122 sys/kern/kern_lock.c:147
syscall(ffff8000295f7fd0) at syscall+0x41d mi_syscall sys/sys/syscall_mi.h:100 [inline]
syscall(ffff8000295f7fd0) at syscall+0x41d sys/arch/amd64/amd64/trap.c:585
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7f7ffffbffa0, count: -12
ddb{0}> machine ddbcpu 1
Stopped at db_enter+0x18: addq $0x8,%rsp
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:437
panic(ffffffff825fc769) at panic+0x177 sys/kern/subr_prf.c:202
pool_do_get(ffffffff82b9c2c8,9,ffff8000261bc218) at pool_do_get+0x474 sys/kern/subr_pool.c:741
pool_get(ffffffff82b9c2c8,9) at pool_get+0xe9 sys/kern/subr_pool.c:584
fdcopy(ffff8000ffff2578) at fdcopy+0x44 fdinit sys/kern/kern_descrip.c:1072 [inline]
fdcopy(ffff8000ffff2578) at fdcopy+0x44 sys/kern/kern_descrip.c:1111
process_new(ffff800029c54a90,ffff8000ffff2578,1) at process_new+0x13b sys/kern/kern_fork.c:259
fork1(ffff8000fffefce0,1,ffffffff82077b80,0,ffff8000261bc440,0) at fork1+0x30b sys/kern/kern_fork.c:383
syscall(ffff8000261bc4c0) at syscall+0x435 mi_syscall sys/sys/syscall_mi.h:101 [inline]
syscall(ffff8000261bc4c0) at syscall+0x435 sys/arch/amd64/amd64/trap.c:585
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7f7ffffd8720, count: 6
ddb{1}> trace
db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:437
panic(ffffffff825fc769) at panic+0x177 sys/kern/subr_prf.c:202
pool_do_get(ffffffff82b9c2c8,9,ffff8000261bc218) at pool_do_get+0x474 sys/kern/subr_pool.c:741
pool_get(ffffffff82b9c2c8,9) at pool_get+0xe9 sys/kern/subr_pool.c:584
fdcopy(ffff8000ffff2578) at fdcopy+0x44 fdinit sys/kern/kern_descrip.c:1072 [inline]
fdcopy(ffff8000ffff2578) at fdcopy+0x44 sys/kern/kern_descrip.c:1111
process_new(ffff800029c54a90,ffff8000ffff2578,1) at process_new+0x13b sys/kern/kern_fork.c:259
fork1(ffff8000fffefce0,1,ffffffff82077b80,0,ffff8000261bc440,0) at fork1+0x30b sys/kern/kern_fork.c:383
syscall(ffff8000261bc4c0) at syscall+0x435 mi_syscall sys/sys/syscall_mi.h:101 [inline]
syscall(ffff8000261bc4c0) at syscall+0x435 sys/arch/amd64/amd64/trap.c:585
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7f7ffffd8720, count: -9
---
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