kern.securelevel: 0 -> 1 creating runtime link editor directory cache. preserving editor files. starting network daemons: sshd. starting local daemons:. Thu May 28 20:17:32 PDT 2020 OpenBSD/amd64 (ci-openbsd-multicore-7.c.syzkaller.internal) (tty00) Warning: Permanently added '10.128.1.33' (ECDSA) to the list of known hosts. 2020/05/28 20:17:56 parsed 1 programs 2020/05/28 20:18:00 executed programs: 0 login: panic: pool_do_get: mbufpl free list modified: page 0xfffffd807f01e000; item addr 0xfffffd807f01e300; offset 0x0=0x0 != 0x7d9378143e66db6d Stopped at db_enter+0x18: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND 317811 569 77 0x100010 0x80 0 dhclient db_enter() at db_enter+0x18 panic(ffffffff82272d3b) at panic+0x15c pool_do_get(ffffffff82663060,2,ffff800020f609e8) at pool_do_get+0x439 pool_get(ffffffff82663060,2) at pool_get+0xeb m_get(2,3) at m_get+0x4c sbappendaddr(fffffd806f6e6000,fffffd806f6e6088,ffffffff824552e0,fffffd806f17f600,0) at sbappendaddr+0x2e9 rtm_sendup(fffffd806f6e6000,fffffd806f17f600,0) at rtm_sendup+0xef route_input(fffffd806f17f600,0,2) at route_input+0x489 rtm_send(fffffd806f7a17e0,2,0,0) at rtm_send+0x18d rtdeletemsg(fffffd806f7a17e0,ffff8000009d5000,0) at rtdeletemsg+0x199 rt_ifa_purge(ffff800000a0cf00) at rt_ifa_purge+0x104 in_purgeaddr(ffff800000a0cf00) at in_purgeaddr+0x132 in_ifdetach(ffff8000009d5000) at in_ifdetach+0x74 if_detach(ffff8000009d5000) at if_detach+0x140 end trace frame: 0xffff800020f61050, 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 pool_do_get: mbufpl free list modified: page 0xfffffd807f01e000; item addr 0xfffffd807f01e300; offset 0x0=0x0 != 0x7d9378143e66db6d ddb{1}> trace db_enter() at db_enter+0x18 panic(ffffffff82272d3b) at panic+0x15c pool_do_get(ffffffff82663060,2,ffff800020f609e8) at pool_do_get+0x439 pool_get(ffffffff82663060,2) at pool_get+0xeb m_get(2,3) at m_get+0x4c sbappendaddr(fffffd806f6e6000,fffffd806f6e6088,ffffffff824552e0,fffffd806f17f600,0) at sbappendaddr+0x2e9 rtm_sendup(fffffd806f6e6000,fffffd806f17f600,0) at rtm_sendup+0xef route_input(fffffd806f17f600,0,2) at route_input+0x489 rtm_send(fffffd806f7a17e0,2,0,0) at rtm_send+0x18d rtdeletemsg(fffffd806f7a17e0,ffff8000009d5000,0) at rtdeletemsg+0x199 rt_ifa_purge(ffff800000a0cf00) at rt_ifa_purge+0x104 in_purgeaddr(ffff800000a0cf00) at in_purgeaddr+0x132 in_ifdetach(ffff8000009d5000) at in_ifdetach+0x74 if_detach(ffff8000009d5000) at if_detach+0x140 tun_clone_destroy(ffff8000009d5000) at tun_clone_destroy+0x1f2 tun_dev_close(5d00,7) at tun_dev_close+0x160 spec_close(ffff800020f61130) at spec_close+0x311 VOP_CLOSE(fffffd806e30d418,7,fffffd807f7bfb40,ffff800020e6c278) at VOP_CLOSE+0xc0 vn_closefile(fffffd806d0bea28,ffff800020e6c278) at vn_closefile+0xd7 fdrop(fffffd806d0bea28,ffff800020e6c278) at fdrop+0xc2 closef(fffffd806d0bea28,ffff800020e6c278) at closef+0x11c fdfree(ffff800020e6c278) at fdfree+0x101 exit1(ffff800020e6c278,0,9,1) at exit1+0x32c postsig(ffff800020e6c278,9) at postsig+0x4ed userret(ffff800020e6c278) at userret+0x199 recall_trap() at recall_trap+0x8 end of kernel end trace frame: 0x7f7ffffbffe0, count: -26 ddb{1}> show registers rdi 0 rsi 0x1 rbp 0xffff800020f60830 rbx 0xffff800020f608e0 rdx 0x8b rcx 0x2 rax 0x1 r8 0xffffffff8168b22f kprintf+0x16f r9 0x1 r10 0x2 r11 0xefffc820908a8e45 r12 0x3000000008 r13 0xffff800020f60840 r14 0x100 r15 0x1 rip 0xffffffff8150f128 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff800020f60820 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb{1}> show proc PROC (syz-executor.0) pid=196858 stat=onproc flags process=a proc=2000 pri=32, usrpri=50, nice=20 forw=0xffffffffffffffff, list=0xffff800020e6c008,0xffffffff82684480 process=0xffff800020e80f70 user=0xffff800020f5c000, vmspace=0xfffffd807efffcf0 estcpu=0, cpticks=2, pctcpu=0.0 user=0, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 37976 21723 18861 0 3 0x82 thrsleep syz-execprog 37976 366255 18861 0 3 0x4000082 thrsleep syz-execprog 37976 365521 18861 0 3 0x4000082 thrsleep syz-execprog 37976 150000 18861 0 3 0x4000082 thrsleep syz-execprog 37976 365452 18861 0 3 0x4000082 thrsleep syz-execprog 37976 514078 18861 0 3 0x4000082 wait syz-execprog 37976 130513 18861 0 3 0x4000082 kqread syz-execprog 37976 138854 18861 0 3 0x4000082 thrsleep syz-execprog 18861 501637 90852 0 3 0x10008a pause ksh 90852 301711 24385 0 3 0x92 select sshd 16328 225416 1 0 3 0x100083 ttyin getty 24385 473016 1 0 3 0x80 select sshd 51875 79467 407 74 3 0x100092 bpf pflogd 407 303376 1 0 3 0x80 netio pflogd 27264 245593 90990 73 3 0x100090 kqread syslogd 90990 4177 1 0 3 0x100082 netio syslogd 569 317811 1 77 7 0x100090 dhclient 27797 67828 1 0 3 0x80 poll dhclient 7772 198003 0 0 3 0x14200 bored smr 53950 122976 0 0 3 0x14200 pgzero zerothread 18293 50645 0 0 3 0x14200 aiodoned aiodoned 18270 42600 0 0 3 0x14200 syncer update 80009 364917 0 0 3 0x14200 cleaner cleaner 81867 139110 0 0 3 0x14200 reaper reaper 19830 479928 0 0 3 0x14200 pgdaemon pagedaemon 629 148311 0 0 3 0x14200 bored crynlk 64198 137213 0 0 3 0x14200 bored crypto 94087 211830 0 0 3 0x40014200 acpi0 acpi0 93309 429579 0 0 3 0x40014200 idle1 34254 174067 0 0 3 0x14200 bored softnet 72380 390684 0 0 2 0x14200 systqmp 17404 275109 0 0 3 0x14200 bored systq 1924 120661 0 0 3 0x40014200 bored softclock 38080 440176 0 0 3 0x40014200 idle0 1 155943 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks CPU 1: exclusive mutex mbufpl r = 0 (0xffffffff82663070) #0 witness_lock+0x4c7 #1 mtx_enter_try+0x102 #2 mtx_enter+0x4b #3 pool_get+0xbf #4 m_get+0x4c #5 sbappendaddr+0x2e9 #6 rtm_sendup+0xef #7 route_input+0x489 #8 rtm_send+0x18d #9 rtdeletemsg+0x199 #10 rt_ifa_purge+0x104 #11 in_purgeaddr+0x132 #12 in_ifdetach+0x74 #13 if_detach+0x140 #14 tun_clone_destroy+0x1f2 #15 tun_dev_close+0x160 #16 spec_close+0x311 #17 VOP_CLOSE+0xc0 #18 vn_closefile+0xd7 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 9465 6396K 6396K 78643K 10560 0 pcb 13 8K 8K 78643K 13 0 rtable 77 2K 2K 78643K 163 0 ifaddr 37 9K 9K 78643K 39 0 counters 41 33K 33K 78643K 41 0 ioctlops 0 0K 4K 78643K 1468 0 mount 1 1K 1K 78643K 1 0 vnodes 1183 74K 75K 78643K 1188 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 1824 197K 290K 78643K 13058 0 file desc 2 4K 12K 78643K 18 0 proc 59 63K 83K 78643K 398 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 in_multi 22 1K 1K 78643K 22 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 19 95K 95K 78643K 19 0 exec 0 0K 1K 78643K 197 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 73 12K 12K 78643K 946 0 UVM aobj 2 2K 2K 78643K 2 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 NDP 7 0K 0K 78643K 7 0 temp 29 3029K 3093K 78643K 1868 0 kqueue 3 4K 4K 78643K 3 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 arp 64 4 0 2 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtpcb 80 17 0 15 1 0 1 1 0 8 0 rtentry 112 34 0 4 1 0 1 1 0 8 0 unpcb 120 29 0 19 1 0 1 1 0 8 0 syncache 264 5 0 5 2 1 1 1 0 8 1 tcpcb 544 8 0 5 1 0 1 1 0 8 0 inpcb 280 34 0 28 1 0 1 1 0 8 0 nd6 48 3 0 0 1 0 1 1 0 8 0 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 11 0 0 1 0 1 1 0 8 0 pfstkey 112 11 0 0 1 0 1 1 0 8 0 pfstate 328 11 0 0 1 0 1 1 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 256 145 0 2 10 0 10 10 0 8 0 art_table 32 146 0 2 2 0 2 2 0 8 0 art_node 16 33 0 6 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1424 0 22 88 0 88 88 0 8 0 ffsino 272 1424 0 22 94 0 94 94 0 8 0 nchpl 144 1642 0 38 60 0 60 60 0 8 0 uvmvnodes 72 1434 0 0 27 0 27 27 0 8 0 vnodes 208 1434 0 0 76 0 76 76 0 8 0 namei 1024 4211 0 4211 2 1 1 1 0 8 1 percpumem 16 31 0 0 1 0 1 1 0 8 0 scxspl 192 3854 0 3854 2 1 1 2 0 8 1 plimitpl 152 15 0 8 1 0 1 1 0 8 0 sigapl 424 241 0 212 4 0 4 4 0 8 0 knotepl 112 47 0 38 1 0 1 1 0 8 0 kqueuepl 144 2 0 0 1 0 1 1 0 8 0 pipelkpl 48 77 0 71 2 1 1 1 0 8 0 pipepl 120 154 0 143 2 1 1 1 0 8 0 fdescpl 496 226 0 212 3 0 3 3 0 8 0 filepl 152 1116 0 1060 3 0 3 3 0 8 0 lockfpl 104 5 0 4 1 0 1 1 0 8 0 lockfspl 48 3 0 2 1 0 1 1 0 8 0 sessionpl 112 19 0 9 1 0 1 1 0 8 0 pgrppl 48 19 0 9 1 0 1 1 0 8 0 ucredpl 96 62 0 53 1 0 1 1 0 8 0 zombiepl 144 213 0 212 2 1 1 1 0 8 0 processpl 984 241 0 212 5 0 5 5 0 8 1 procpl 624 248 0 212 3 0 3 3 0 8 0 sockpl 400 80 0 62 2 0 2 2 0 8 0 mcl4k 4096 1 0 0 1 0 1 1 0 8 0 mcl2k 2048 75 0 0 10 0 10 10 0 8 0 mtagpl 80 1 0 0 1 0 1 1 0 8 0 mbufpl 256 116 0 0 6 0 6 6 0 8 0 mbufpl: pool(0xffffffff82663060:mbufpl): free list modified: page 0xfffffd807f01e000; item ordinal 0; addr 0xfffffd807f01e300 (p 0xfffffd807f7c4000); offset 0x0=0x0 pool(mbufpl): free list modified: page 0xfffffd807f01e000; item ordinal 0; addr 0xfffffd807f01e300 (p 0xfffffd807f7c4000); offset 0x0=0x0 mbufpl: pool(0xffffffff82663060:mbufpl): page inconsistency: page 0xfffffd807f01e000; item ordinal 1; addr 0x5ec66c82ade42630 bufpl 280 2986 0 133 204 0 204 204 0 8 0 anonpl 16 22075 0 20487 14 2 12 12 0 124 4 amapchunkpl 152 799 0 733 4 0 4 4 0 158 0 amappl16 192 142 0 115 2 0 2 2 0 8 0 amappl15 184 1 0 0 1 0 1 1 0 8 0 amappl14 176 34 0 29 1 0 1 1 0 8 0 amappl13 168 24 0 21 2 1 1 1 0 8 0 amappl12 160 2 0 1 2 1 1 1 0 8 0 amappl11 152 56 0 41 1 0 1 1 0 8 0 amappl10 144 24 0 21 1 0 1 1 0 8 0 amappl9 136 233 0 231 1 0 1 1 0 8 0 amappl8 128 270 0 262 1 0 1 1 0 8 0 amappl7 120 113 0 103 1 0 1 1 0 8 0 amappl6 112 24 0 21 2 1 1 1 0 8 0 amappl5 104 134 0 119 1 0 1 1 0 8 0 amappl4 96 493 0 468 1 0 1 1 0 8 0 amappl3 88 105 0 100 1 0 1 1 0 8 0 amappl2 80 854 0 795 3 1 2 2 0 8 0 amappl1 72 15498 0 15085 23 5 18 18 0 8 8 amappl 80 476 0 448 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 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 64 1 0 0 1 0 1 1 0 8 0 uaddrrnd 24 226 0 212 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 226 0 212 1 0 1 1 0 8 0 vmmpekpl 168 6352 0 6327 2 0 2 2 0 8 0 vmmpepl 168 32575 0 31664 82 10 72 72 0 357 29 vmsppl 368 225 0 212 2 0 2 2 0 8 0 pdppl 4096 460 0 424 6 0 6 6 0 8 0 pvpl 32 113704 0 109739 108 4 104 104 0 265 69 pmappl 232 225 0 212 1 0 1 1 0 8 0 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 233 0 4 7 0 7 7 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp x86_ipi_db(ffffffff8250eff0) at x86_ipi_db+0x1a x86_ipi_handler() at x86_ipi_handler+0xc6 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x23 __mp_lock(ffffffff82658740) at __mp_lock+0x127 __mp_acquire_count(ffffffff82658740,2) at __mp_acquire_count+0x51 mi_switch() at mi_switch+0x392 sleep_finish(ffff800020ea7a30,1) at sleep_finish+0x113 sleep_finish_all(ffff800020ea7a30,1) at sleep_finish_all+0x32 tsleep(ffffffff8265fabc,118,ffffffff8224ce70,41de81) at tsleep+0x1cc doppoll(ffff800020e6d118,7f7fffff86e0,3,ffff800020ea7bc8,0,ffff800020ea7c80) at doppoll+0x57e sys_poll(ffff800020e6d118,ffff800020ea7c30,ffff800020ea7c80) at sys_poll+0xa6 syscall(ffff800020ea7d00) at syscall+0x4a4 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7fffff86c0, count: 2 ddb{0}> trace x86_ipi_db(ffffffff8250eff0) at x86_ipi_db+0x1a x86_ipi_handler() at x86_ipi_handler+0xc6 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x23 __mp_lock(ffffffff82658740) at __mp_lock+0x127 __mp_acquire_count(ffffffff82658740,2) at __mp_acquire_count+0x51 mi_switch() at mi_switch+0x392 sleep_finish(ffff800020ea7a30,1) at sleep_finish+0x113 sleep_finish_all(ffff800020ea7a30,1) at sleep_finish_all+0x32 tsleep(ffffffff8265fabc,118,ffffffff8224ce70,41de81) at tsleep+0x1cc doppoll(ffff800020e6d118,7f7fffff86e0,3,ffff800020ea7bc8,0,ffff800020ea7c80) at doppoll+0x57e sys_poll(ffff800020e6d118,ffff800020ea7c30,ffff800020ea7c80) at sys_poll+0xa6 syscall(ffff800020ea7d00) at syscall+0x4a4 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7fffff86c0, count: -13 ddb{0}> machine ddbcpu 1 Stopped at db_enter+0x18: addq $0x8,%rsp db_enter() at db_enter+0x18 panic(ffffffff82272d3b) at panic+0x15c pool_do_get(ffffffff82663060,2,ffff800020f609e8) at pool_do_get+0x439 pool_get(ffffffff82663060,2) at pool_get+0xeb m_get(2,3) at m_get+0x4c sbappendaddr(fffffd806f6e6000,fffffd806f6e6088,ffffffff824552e0,fffffd806f17f600,0) at sbappendaddr+0x2e9 rtm_sendup(fffffd806f6e6000,fffffd806f17f600,0) at rtm_sendup+0xef route_input(fffffd806f17f600,0,2) at route_input+0x489 rtm_send(fffffd806f7a17e0,2,0,0) at rtm_send+0x18d rtdeletemsg(fffffd806f7a17e0,ffff8000009d5000,0) at rtdeletemsg+0x199 rt_ifa_purge(ffff800000a0cf00) at rt_ifa_purge+0x104 in_purgeaddr(ffff800000a0cf00) at in_purgeaddr+0x132 in_ifdetach(ffff8000009d5000) at in_ifdetach+0x74 if_detach(ffff8000009d5000) at if_detach+0x140 end trace frame: 0xffff800020f61050, count: 0 ddb{1}> trace db_enter() at db_enter+0x18 panic(ffffffff82272d3b) at panic+0x15c pool_do_get(ffffffff82663060,2,ffff800020f609e8) at pool_do_get+0x439 pool_get(ffffffff82663060,2) at pool_get+0xeb m_get(2,3) at m_get+0x4c sbappendaddr(fffffd806f6e6000,fffffd806f6e6088,ffffffff824552e0,fffffd806f17f600,0) at sbappendaddr+0x2e9 rtm_sendup(fffffd806f6e6000,fffffd806f17f600,0) at rtm_sendup+0xef route_input(fffffd806f17f600,0,2) at route_input+0x489 rtm_send(fffffd806f7a17e0,2,0,0) at rtm_send+0x18d rtdeletemsg(fffffd806f7a17e0,ffff8000009d5000,0) at rtdeletemsg+0x199 rt_ifa_purge(ffff800000a0cf00) at rt_ifa_purge+0x104 in_purgeaddr(ffff800000a0cf00) at in_purgeaddr+0x132 in_ifdetach(ffff8000009d5000) at in_ifdetach+0x74 if_detach(ffff8000009d5000) at if_detach+0x140 tun_clone_destroy(ffff8000009d5000) at tun_clone_destroy+0x1f2 tun_dev_close(5d00,7) at tun_dev_close+0x160 spec_close(ffff800020f61130) at spec_close+0x311 VOP_CLOSE(fffffd806e30d418,7,fffffd807f7bfb40,ffff800020e6c278) at VOP_CLOSE+0xc0 vn_closefile(fffffd806d0bea28,ffff800020e6c278) at vn_closefile+0xd7 fdrop(fffffd806d0bea28,ffff800020e6c278) at fdrop+0xc2 closef(fffffd806d0bea28,ffff800020e6c278) at closef+0x11c fdfree(ffff800020e6c278) at fdfree+0x101 exit1(ffff800020e6c278,0,9,1) at exit1+0x32c postsig(ffff800020e6c278,9) at postsig+0x4ed userret(ffff800020e6c278) at userret+0x199 recall_trap() at recall_trap+0x8 end of kernel end trace frame: 0x7f7ffffbffe0, count: -26 ddb{1}>