panic: acquiring blockable sleep lock with spinlock or critical section held (kernel_lock) &kernel_lock Stopped at db_enter+0x18: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND 124669 158 0 0 0 1 syz-executor.0 *474030 158 0 0 0x4000000 0 syz-executor.0 db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398 panic() at panic+0x15c sys/kern/subr_prf.c:207 witness_checkorder(ffffffff8265f5f8,9,0) at witness_checkorder+0x10cc sys/kern/subr_witness.c:820 __mp_lock(ffffffff8265f3f0) at __mp_lock+0xa1 pageflttrap() at pageflttrap+0x6f sys/arch/amd64/amd64/trap.c:162 kerntrap(ffff800022d88f60) at kerntrap+0xec sys/arch/amd64/amd64/trap.c:287 alltraps_kern_meltdown(6,0,600,0,fffffd8007df9854,fffffd8063f44f40) at alltraps_kern_meltdown+0x7b frag6_input(ffff800022d892c8,ffff800022d892d4,2c,18) at frag6_input+0x7d2 sys/netinet6/frag6.c:321 ip_deliver(ffff800022d892c8,ffff800022d892d4,2c,18) at ip_deliver+0x353 sys/netinet/ip_input.c:665 ip6_input_if(ffff800022d892c8,ffff800022d892d4,29,0,ffff80000066d000) at ip6_input_if+0x17d4 ip6_ours sys/netinet6/ip6_input.c:518 [inline] ip6_input_if(ffff800022d892c8,ffff800022d892d4,29,0,ffff80000066d000) at ip6_input_if+0x17d4 sys/netinet6/ip6_input.c:340 ipv6_input(ffff80000066d000,fffffd80696a1f00) at ipv6_input+0x48 sys/netinet6/ip6_input.c:171 if_input_local(ffff80000066d000,fffffd80696a1f00,18) at if_input_local+0x121 sys/net/if.c:783 ip6_output(fffffd807f02b900,ffff800000a98c80,fffffd806f6ba4d0,0,0,fffffd806f6ba460) at ip6_output+0xd59 rip6_output(fffffd807f02b900,fffffd80663e9018,ffff800022d89638,0) at rip6_output+0x4c0 sys/netinet6/raw_ip6.c:481 end trace frame: 0xffff800022d896d0, 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{0}> ddb{0}> set $lines = 0 ddb{0}> set $maxwidth = 0 ddb{0}> show panic acquiring blockable sleep lock with spinlock or critical section held (kernel_lock) &kernel_lock ddb{0}> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398 panic() at panic+0x15c sys/kern/subr_prf.c:207 witness_checkorder(ffffffff8265f5f8,9,0) at witness_checkorder+0x10cc sys/kern/subr_witness.c:820 __mp_lock(ffffffff8265f3f0) at __mp_lock+0xa1 pageflttrap() at pageflttrap+0x6f sys/arch/amd64/amd64/trap.c:162 kerntrap(ffff800022d88f60) at kerntrap+0xec sys/arch/amd64/amd64/trap.c:287 alltraps_kern_meltdown(6,0,600,0,fffffd8007df9854,fffffd8063f44f40) at alltraps_kern_meltdown+0x7b frag6_input(ffff800022d892c8,ffff800022d892d4,2c,18) at frag6_input+0x7d2 sys/netinet6/frag6.c:321 ip_deliver(ffff800022d892c8,ffff800022d892d4,2c,18) at ip_deliver+0x353 sys/netinet/ip_input.c:665 ip6_input_if(ffff800022d892c8,ffff800022d892d4,29,0,ffff80000066d000) at ip6_input_if+0x17d4 ip6_ours sys/netinet6/ip6_input.c:518 [inline] ip6_input_if(ffff800022d892c8,ffff800022d892d4,29,0,ffff80000066d000) at ip6_input_if+0x17d4 sys/netinet6/ip6_input.c:340 ipv6_input(ffff80000066d000,fffffd80696a1f00) at ipv6_input+0x48 sys/netinet6/ip6_input.c:171 if_input_local(ffff80000066d000,fffffd80696a1f00,18) at if_input_local+0x121 sys/net/if.c:783 ip6_output(fffffd807f02b900,ffff800000a98c80,fffffd806f6ba4d0,0,0,fffffd806f6ba460) at ip6_output+0xd59 rip6_output(fffffd807f02b900,fffffd80663e9018,ffff800022d89638,0) at rip6_output+0x4c0 sys/netinet6/raw_ip6.c:481 rip6_usrreq(fffffd80663e9018,9,fffffd807f02b900,0,0,ffff800020acea00) at rip6_usrreq+0x5cd sys/netinet6/raw_ip6.c:670 sosend(fffffd80663e9018,0,ffff800022d89868,0,0,0) at sosend+0x668 sys/kern/uipc_socket.c:524 dofilewritev(ffff800020acea00,3,ffff800022d89868,0,ffff800022d89970) at dofilewritev+0x1ac sys/kern/sys_generic.c:364 sys_write(ffff800020acea00,ffff800022d89908,ffff800022d89970) at sys_write+0x83 sys/kern/sys_generic.c:284 syscall(ffff800022d899e0) at syscall+0x552 mi_syscall sys/sys/syscall_mi.h:92 [inline] syscall(ffff800022d899e0) at syscall+0x552 sys/arch/amd64/amd64/trap.c:555 Xsyscall(6,0,c,0,3,345b2efa010) at Xsyscall+0x128 end of kernel end trace frame: 0x3487a74f1a0, count: -20 ddb{0}> show registers rdi 0xffffffff81d56a37 db_enter+0x17 rsi 0x2f14 __ALIGN_SIZE+0x1f14 rbp 0xffff800022d88cc0 rbx 0xffff800022d88d70 rdx 0x2f15 __ALIGN_SIZE+0x1f15 rcx 0xffff800020b6c000 rax 0xffff800020b6c000 r8 0xffffffff812e94e3 kprintf+0x173 r9 0x1 r10 0x25 r11 0xda1a6e8cee775b05 r12 0x3000000008 r13 0xffff800022d88cd0 r14 0x100 r15 0x1 rip 0xffffffff81d56a38 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff800022d88cb0 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb{0}> show proc PROC (syz-executor.0) pid=474030 stat=onproc flags process=0 proc=4000000 pri=76, usrpri=76, nice=20 forw=0xffffffffffffffff, list=0xffff800020ace298,0xffffffff826641e8 process=0xffff800020a4bc08 user=0xffff800022d84000, vmspace=0xfffffd807f00bb80 estcpu=36, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 158 124669 8398 0 7 0 syz-executor.0 * 158 474030 8398 0 7 0x4000000 syz-executor.0 26310 139154 1 0 3 0x100083 ttyin getty 76243 447906 5428 0 3 0x2 biowait syz-executor.1 14808 373034 0 0 3 0x14200 bored sosplice 8398 23742 5428 0 3 0x82 nanosleep syz-executor.0 5428 206244 67608 0 3 0x82 thrsleep syz-fuzzer 5428 33248 67608 0 3 0x4000082 nanosleep syz-fuzzer 5428 39606 67608 0 3 0x4000082 thrsleep syz-fuzzer 5428 327913 67608 0 3 0x4000082 nanosleep syz-fuzzer 5428 187871 67608 0 3 0x4000082 thrsleep syz-fuzzer 5428 383334 67608 0 3 0x4000082 thrsleep syz-fuzzer 5428 420667 67608 0 3 0x4000082 thrsleep syz-fuzzer 5428 507938 67608 0 3 0x4000082 kqread syz-fuzzer 5428 181474 67608 0 3 0x4000082 thrsleep syz-fuzzer 5428 174446 67608 0 3 0x4000082 thrsleep syz-fuzzer 67608 62232 24893 0 3 0x10008a pause ksh 24893 323229 46003 0 3 0x92 select sshd 46003 337348 1 0 3 0x80 select sshd 19017 426266 26870 74 3 0x100092 bpf pflogd 26870 72518 1 0 3 0x80 netio pflogd 42278 381097 89672 73 3 0x100090 kqread syslogd 89672 245022 1 0 3 0x100082 netio syslogd 99845 386901 1 77 3 0x100090 poll dhclient 52756 151979 1 0 3 0x80 poll dhclient 75778 267984 0 0 3 0x14200 pgzero zerothread 71552 25569 0 0 3 0x14200 aiodoned aiodoned 51333 14345 0 0 3 0x14200 syncer update 18796 104957 0 0 3 0x14200 cleaner cleaner 29908 297347 0 0 3 0x14200 reaper reaper 2961 183204 0 0 3 0x14200 pgdaemon pagedaemon 83237 7681 0 0 3 0x14200 bored crynlk 83722 109225 0 0 3 0x14200 bored crypto 71191 408206 0 0 3 0x40014200 acpi0 acpi0 31843 21340 0 0 3 0x40014200 idle1 19192 294920 0 0 3 0x14200 bored softnet 36903 287417 0 0 3 0x14200 bored systqmp 9005 260726 0 0 3 0x14200 bored systq 34413 87527 0 0 3 0x40014200 bored softclock 35868 457103 0 0 3 0x40014200 idle0 27773 467914 0 0 3 0x14200 bored smr 1 212198 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks CPU 0: exclusive mutex /syzkaller/managers/multicore/kernel/sys/netinet6/frag6.c:57 r = 0 (0xffffffff824bae40) #0 witness_lock+0x52e sys/kern/subr_witness.c:1163 #1 mtx_enter_try+0x102 #2 mtx_enter+0x4b sys/kern/kern_lock.c:266 #3 frag6_input+0x237 sys/netinet6/frag6.c:183 #4 ip_deliver+0x353 sys/netinet/ip_input.c:665 #5 ip6_input_if+0x17d4 ip6_ours sys/netinet6/ip6_input.c:518 [inline] #5 ip6_input_if+0x17d4 sys/netinet6/ip6_input.c:340 #6 ipv6_input+0x48 sys/netinet6/ip6_input.c:171 #7 if_input_local+0x121 sys/net/if.c:783 #8 ip6_output+0xd59 #9 rip6_output+0x4c0 sys/netinet6/raw_ip6.c:481 #10 rip6_usrreq+0x5cd sys/netinet6/raw_ip6.c:670 #11 sosend+0x668 sys/kern/uipc_socket.c:524 #12 dofilewritev+0x1ac sys/kern/sys_generic.c:364 #13 sys_write+0x83 sys/kern/sys_generic.c:284 #14 syscall+0x552 mi_syscall sys/sys/syscall_mi.h:92 [inline] #14 syscall+0x552 sys/arch/amd64/amd64/trap.c:555 #15 Xsyscall+0x128 Process 158 (syz-executor.0) thread 0xffff800020acea00 (474030) exclusive rwlock netlock r = 0 (0xffffffff824c5488) #0 witness_lock+0x52e sys/kern/subr_witness.c:1163 #1 solock+0x5a sys/kern/uipc_socket2.c:282 #2 sosend+0x52c sys/kern/uipc_socket.c:512 #3 dofilewritev+0x1ac sys/kern/sys_generic.c:364 #4 sys_write+0x83 sys/kern/sys_generic.c:284 #5 syscall+0x552 mi_syscall sys/sys/syscall_mi.h:92 [inline] #5 syscall+0x552 sys/arch/amd64/amd64/trap.c:555 #6 Xsyscall+0x128 exclusive mutex /syzkaller/managers/multicore/kernel/sys/netinet6/frag6.c:57 r = 0 (0xffffffff824bae40) #0 witness_lock+0x52e sys/kern/subr_witness.c:1163 #1 mtx_enter_try+0x102 #2 mtx_enter+0x4b sys/kern/kern_lock.c:266 #3 frag6_input+0x237 sys/netinet6/frag6.c:183 #4 ip_deliver+0x353 sys/netinet/ip_input.c:665 #5 ip6_input_if+0x17d4 ip6_ours sys/netinet6/ip6_input.c:518 [inline] #5 ip6_input_if+0x17d4 sys/netinet6/ip6_input.c:340 #6 ipv6_input+0x48 sys/netinet6/ip6_input.c:171 #7 if_input_local+0x121 sys/net/if.c:783 #8 ip6_output+0xd59 #9 rip6_output+0x4c0 sys/netinet6/raw_ip6.c:481 #10 rip6_usrreq+0x5cd sys/netinet6/raw_ip6.c:670 #11 sosend+0x668 sys/kern/uipc_socket.c:524 #12 dofilewritev+0x1ac sys/kern/sys_generic.c:364 #13 sys_write+0x83 sys/kern/sys_generic.c:284 #14 syscall+0x552 mi_syscall sys/sys/syscall_mi.h:92 [inline] #14 syscall+0x552 sys/arch/amd64/amd64/trap.c:555 #15 Xsyscall+0x128 Process 76243 (syz-executor.1) thread 0xffff800020abf3d8 (447906) exclusive rrwlock inode r = 0 (0xfffffd8065234928) #0 witness_lock+0x52e sys/kern/subr_witness.c:1163 #1 rw_enter+0x46d sys/kern/kern_rwlock.c:306 #2 rrw_enter+0x4f sys/kern/kern_rwlock.c:435 #3 ufs_ihashins+0x45 sys/ufs/ufs/ufs_ihash.c:140 #4 ffs_vget+0x13e sys/ufs/ffs/ffs_vfsops.c:1352 #5 ffs_inode_alloc+0x1cf sys/ufs/ffs/ffs_alloc.c:392 #6 ufs_mkdir+0xf4 sys/ufs/ufs/ufs_vnops.c:1164 #7 VOP_MKDIR+0xce sys/kern/vfs_vops.c:449 #8 domkdirat+0x121 sys/kern/vfs_syscalls.c:2983 #9 syscall+0x552 mi_syscall sys/sys/syscall_mi.h:92 [inline] #9 syscall+0x552 sys/arch/amd64/amd64/trap.c:555 #10 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd806e1484d8) #0 witness_lock+0x52e sys/kern/subr_witness.c:1163 #1 rw_enter+0x46d sys/kern/kern_rwlock.c:306 #2 rrw_enter+0x4f sys/kern/kern_rwlock.c:435 #3 VOP_LOCK+0x4b sys/kern/vfs_vops.c:602 #4 vn_lock+0x6e sys/kern/vfs_vnops.c:561 #5 vfs_lookup+0xec sys/kern/vfs_lookup.c:418 #6 namei+0x61c sys/kern/vfs_lookup.c:248 #7 domkdirat+0x75 sys/kern/vfs_syscalls.c:2968 #8 syscall+0x552 mi_syscall sys/sys/syscall_mi.h:92 [inline] #8 syscall+0x552 sys/arch/amd64/amd64/trap.c:555 #9 Xsyscall+0x128 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim Kern Lim devbuf 9542 6810K 6936K 78643K 11958 0 0 pcb 14 8K 8K 78643K 99 0 0 rtable 108 4K 4K 78643K 387 0 0 ifaddr 53 12K 13K 78643K 112 0 0 counters 39 33K 33K 78643K 39 0 0 ioctlops 0 0K 4K 78643K 1507 0 0 iov 0 0K 48K 78643K 63 0 0 mount 1 1K 1K 78643K 1 0 0 vnodes 1213 76K 77K 78643K 1726 0 0 UFS quota 1 32K 32K 78643K 1 0 0 UFS mount 5 36K 36K 78643K 5 0 0 shm 2 1K 5K 78643K 9 0 0 VM map 2 1K 1K 78643K 6 0 0 sem 12 0K 0K 78643K 66 0 0 dirhash 12 2K 2K 78643K 12 0 0 ACPI 1808 196K 290K 78643K 12765 0 0 file desc 5 13K 25K 78643K 645 0 0 sigio 0 0K 0K 78643K 11 0 0 proc 53 50K 71K 78643K 578 0 0 subproc 32 2K 2K 78643K 73 0 0 NFS srvsock 1 0K 0K 78643K 1 0 0 NFS daemon 1 16K 16K 78643K 1 0 0 ip_moptions 0 0K 0K 78643K 48 0 0 in_multi 33 2K 2K 78643K 72 0 0 ether_multi 1 0K 0K 78643K 2 0 0 mrt 0 0K 0K 78643K 1 0 0 ISOFS mount 1 32K 32K 78643K 1 0 0 MSDOSFS mount 1 16K 16K 78643K 1 0 0 ttys 72 318K 318K 78643K 72 0 0 exec 0 0K 1K 78643K 293 0 0 pagedep 1 8K 8K 78643K 1 0 0 inodedep 1 32K 32K 78643K 1 0 0 newblk 1 0K 0K 78643K 1 0 0 VM swap 7 26K 26K 78643K 7 0 0 UVM amap 103 21K 30K 78643K 2975 0 0 UVM aobj 30 2K 2K 78643K 30 0 0 memdesc 1 4K 4K 78643K 1 0 0 crypto data 1 1K 1K 78643K 1 0 0 ip6_options 2 0K 0K 78643K 78 0 0 NDP 10 0K 0K 78643K 32 0 0 temp 159 3555K 3621K 78643K 10279 0 0 kqueue 0 0K 0K 78643K 4 0 0 SYN cache 2 16K 16K 78643K 2 0 0 ddb{0}> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle arp 64 10 0 4 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtpcb 80 49 0 47 1 0 1 1 0 8 0 rtentry 112 67 0 23 2 0 2 2 0 8 0 unpcb 120 231 0 221 1 0 1 1 0 8 0 syncache 264 4 0 4 1 1 0 1 0 8 0 tcpqe 32 4908 0 4908 1 1 0 1 0 8 0 tcpcb 544 139 0 134 1 0 1 1 0 8 0 inpcb 280 381 0 373 1 0 1 1 0 8 0 ip6q 72 1 0 0 1 0 1 1 0 8 0 ip6af 48 1 0 0 1 0 1 1 0 8 0 nd6 48 12 0 6 1 0 1 1 0 8 0 ppxss 1128 9 0 9 2 1 1 1 0 8 1 pfosfp 40 846 0 423 5 0 5 5 0 8 0 pfosfpen 112 1428 0 714 21 0 21 21 0 8 0 pfstitem 24 28 0 9 1 0 1 1 0 8 0 pfstkey 112 28 0 9 1 0 1 1 0 8 0 pfstate 328 28 0 9 2 0 2 2 0 8 0 pfrule 1360 21 0 16 2 1 1 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 279 0 88 12 0 12 12 0 8 0 art_table 32 280 0 88 2 0 2 2 0 8 0 art_node 16 66 0 26 1 0 1 1 0 8 0 sysvmsgpl 40 16 0 10 1 0 1 1 0 8 0 semupl 112 2 0 2 1 1 0 1 0 8 0 semapl 112 64 0 54 1 0 1 1 0 8 0 shmpl 112 28 0 0 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino1pl 128 2370 0 946 47 0 47 47 0 8 0 ffsino 272 2370 0 946 96 0 96 96 0 8 0 nchpl 144 3439 0 1805 62 0 62 62 0 8 0 uvmvnodes 72 2764 0 0 51 0 51 51 0 8 0 vnodes 200 2764 0 0 146 0 146 146 0 8 0 namei 1024 10444 0 10443 2 1 1 1 0 8 0 percpumem 16 30 0 0 1 0 1 1 0 8 0 vmpool 552 4 0 4 2 1 1 1 0 8 1 scxspl 192 9439 0 9438 10 9 1 7 0 8 0 plimitpl 152 80 0 72 1 0 1 1 0 8 0 sigapl 432 840 0 825 3 1 2 3 0 8 0 futexpl 56 8232 0 8232 1 0 1 1 0 8 1 knotepl 112 167 0 148 1 0 1 1 0 8 0 kqueuepl 104 121 0 119 1 0 1 1 0 8 0 pipepl 112 468 0 449 2 1 1 2 0 8 0 fdescpl 488 841 0 825 3 0 3 3 0 8 0 filepl 152 4748 0 4648 8 3 5 7 0 8 1 lockfpl 104 246 0 246 2 1 1 1 0 8 1 lockfspl 48 84 0 84 2 1 1 1 0 8 1 sessionpl 112 21 0 10 1 0 1 1 0 8 0 pgrppl 48 23 0 12 1 0 1 1 0 8 0 ucredpl 96 818 0 809 1 0 1 1 0 8 0 zombiepl 144 825 0 825 2 1 1 1 0 8 1 processpl 896 857 0 825 4 0 4 4 0 8 0 procpl 632 2105 0 2063 5 0 5 5 0 8 0 srpgc 64 4 0 4 2 2 0 1 0 8 0 sosppl 128 12 0 12 3 3 0 1 0 8 0 sockpl 384 665 0 645 5 2 3 4 0 8 0 mcl64k 65536 6 0 0 1 0 1 1 0 8 0 mcl16k 16384 2 0 0 1 0 1 1 0 8 0 mcl12k 12288 4 0 0 1 0 1 1 0 8 0 mcl9k 9216 3 0 0 1 0 1 1 0 8 0 mcl8k 8192 6 0 0 1 0 1 1 0 8 0 mcl4k 4096 6 0 0 1 0 1 1 0 8 0 mcl2k2 2112 3 0 0 1 0 1 1 0 8 0 mcl2k 2048 153 0 0 19 0 19 19 0 8 0 mtagpl 80 15 0 0 1 0 1 1 0 8 0 mbufpl 256 187 0 0 11 0 11 11 0 8 0 bufpl 256 7016 0 1172 366 0 366 366 0 8 0 anonpl 16 87764 0 75131 66 12 54 61 0 124 1 amapchunkpl 152 4811 0 4699 17 11 6 10 0 158 0 amappl16 192 3506 0 2816 44 4 40 42 0 8 5 amappl14 176 69 0 63 1 0 1 1 0 8 0 amappl13 168 129 0 128 2 1 1 1 0 8 0 amappl12 160 14 0 12 2 1 1 1 0 8 0 amappl11 152 355 0 338 1 0 1 1 0 8 0 amappl10 144 150 0 144 1 0 1 1 0 8 0 amappl9 136 729 0 725 1 0 1 1 0 8 0 amappl8 128 287 0 264 1 0 1 1 0 8 0 amappl7 120 116 0 110 1 0 1 1 0 8 0 amappl6 112 350 0 340 1 0 1 1 0 8 0 amappl5 104 158 0 144 1 0 1 1 0 8 0 amappl4 96 1108 0 1078 2 1 1 2 0 8 0 amappl3 88 194 0 183 1 0 1 1 0 8 0 amappl2 80 5809 0 5736 3 1 2 3 0 8 0 amappl1 72 27782 0 27342 27 17 10 20 0 8 0 amappl 80 2393 0 2354 1 0 1 1 0 84 0 dma4096 4096 1 0 1 1 1 0 1 0 8 0 dma256 256 6 0 6 1 1 0 1 0 8 0 dma64 64 259 0 259 1 1 0 1 0 8 0 dma32 32 7 0 7 1 1 0 1 0 8 0 dma16 16 17 0 17 1 1 0 1 0 8 0 aobjpl 64 29 0 0 1 0 1 1 0 8 0 uaddrrnd 24 845 0 825 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 845 0 825 1 0 1 1 0 8 0 vmmpekpl 168 10405 0 10374 2 0 2 2 0 8 0 vmmpepl 168 108484 0 106650 141 45 96 105 0 357 10 vmsppl 368 840 0 825 2 0 2 2 0 8 0 pdppl 4096 1697 0 1658 7 1 6 6 0 8 0 pvpl 32 273171 0 257382 172 23 149 155 0 265 19 pmappl 232 844 0 829 4 2 2 2 0 8 1 extentpl 40 41 0 26 1 0 1 1 0 8 0 phpool 112 528 0 5 15 0 15 15 0 8 0