kern.securelevel: 0 -> 1 creating runtime link editor directory cache. preserving editor files. starting network daemons: sshd. starting local daemons:. Sat May 23 09:00:46 PDT 2020 OpenBSD/amd64 (ci-openbsd-multicore-0.c.syzkaller.internal) (tty00) Warning: Permanently added '10.128.0.223' (ECDSA) to the list of known hosts. 2020/05/23 09:01:12 parsed 1 programs 2020/05/23 09:01:15 executed programs: 0 login: panic: pool_do_get: mbufpl free list modified: page 0xfffffd806d748000; item addr 0xfffffd806d748300; offset 0x0=0x0 != 0x1b6a092fb90c3a1c Stopped at db_enter+0x18: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND 275897 32370 77 0x100010 0x80 0 dhclient db_enter() at db_enter+0x18 panic(ffffffff822737fc) at panic+0x15c pool_do_get(ffffffff82647988,2,ffff800020f5e9f8) at pool_do_get+0x439 pool_get(ffffffff82647988,2) at pool_get+0xeb m_gethdr(2,1) at m_gethdr+0x4c rtm_msg1(2,ffff800020f5eb50) at rtm_msg1+0x6e rtm_send(fffffd806f3cfcb0,2,0,0) at rtm_send+0x120 rt_ifa_del(ffff800000a0cc00,800100,ffff800000a0cc40,0) at rt_ifa_del+0x3bb in6_unlink_ifa(ffff800000a0cc00,ffff8000009d5000) at in6_unlink_ifa+0x571 in6_purgeaddr(ffff800000a0cc00) at in6_purgeaddr+0x1d7 in6_ifdetach(ffff8000009d5000) at in6_ifdetach+0x74 if_detach(ffff8000009d5000) at if_detach+0x148 tun_clone_destroy(ffff8000009d5000) at tun_clone_destroy+0x1f2 tun_dev_close(5d00,7) at tun_dev_close+0x160 end trace frame: 0xffff800020f5f090, 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 0xfffffd806d748000; item addr 0xfffffd806d748300; offset 0x0=0x0 != 0x1b6a092fb90c3a1c ddb{1}> trace db_enter() at db_enter+0x18 panic(ffffffff822737fc) at panic+0x15c pool_do_get(ffffffff82647988,2,ffff800020f5e9f8) at pool_do_get+0x439 pool_get(ffffffff82647988,2) at pool_get+0xeb m_gethdr(2,1) at m_gethdr+0x4c rtm_msg1(2,ffff800020f5eb50) at rtm_msg1+0x6e rtm_send(fffffd806f3cfcb0,2,0,0) at rtm_send+0x120 rt_ifa_del(ffff800000a0cc00,800100,ffff800000a0cc40,0) at rt_ifa_del+0x3bb in6_unlink_ifa(ffff800000a0cc00,ffff8000009d5000) at in6_unlink_ifa+0x571 in6_purgeaddr(ffff800000a0cc00) at in6_purgeaddr+0x1d7 in6_ifdetach(ffff8000009d5000) at in6_ifdetach+0x74 if_detach(ffff8000009d5000) at if_detach+0x148 tun_clone_destroy(ffff8000009d5000) at tun_clone_destroy+0x1f2 tun_dev_close(5d00,7) at tun_dev_close+0x160 spec_close(ffff800020f5f0a0) at spec_close+0x311 VOP_CLOSE(fffffd806e935008,7,fffffd807f7bfa20,ffff800020e6dd48) at VOP_CLOSE+0xc0 vn_closefile(fffffd806d0adac0,ffff800020e6dd48) at vn_closefile+0xd7 fdrop(fffffd806d0adac0,ffff800020e6dd48) at fdrop+0xc2 closef(fffffd806d0adac0,ffff800020e6dd48) at closef+0x11c fdfree(ffff800020e6dd48) at fdfree+0x101 exit1(ffff800020e6dd48,0,9,1) at exit1+0x32c postsig(ffff800020e6dd48,9) at postsig+0x4ed userret(ffff800020e6dd48) at userret+0x199 syscall(ffff800020f5f520) at syscall+0x55f Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffedcb0, count: -25 ddb{1}> show registers rdi 0 rsi 0x1 rbp 0xffff800020f5e840 rbx 0xffff800020f5e8f0 rdx 0x8b rcx 0x2 rax 0x1 r8 0xffffffff81d0d2df kprintf+0x16f r9 0x1 r10 0x2 r11 0x404e8e654cff9048 r12 0x3000000008 r13 0xffff800020f5e850 r14 0x100 r15 0x1 rip 0xffffffff81cf6478 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff800020f5e830 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb{1}> show proc PROC (syz-executor.0) pid=309420 stat=onproc flags process=a proc=2000 pri=32, usrpri=50, nice=20 forw=0xffffffffffffffff, list=0xffff800020e6c008,0xffffffff82646c88 process=0xffff800020e807c0 user=0xffff800020f5a000, vmspace=0xfffffd807efffcf0 estcpu=18, cpticks=3, pctcpu=0.0 user=0, sys=2, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 36547 417180 89624 0 3 0x82 thrsleep syz-execprog 36547 4100 89624 0 3 0x4000082 thrsleep syz-execprog 36547 212136 89624 0 3 0x4000082 thrsleep syz-execprog 36547 241642 89624 0 3 0x4000082 thrsleep syz-execprog 36547 321162 89624 0 3 0x4000082 thrsleep syz-execprog 36547 366625 89624 0 3 0x4000082 wait syz-execprog 36547 213124 89624 0 3 0x4000082 kqread syz-execprog 36547 224443 89624 0 3 0x4000082 thrsleep syz-execprog 89624 413552 73961 0 3 0x10008a pause ksh 73961 7650 71951 0 3 0x92 select sshd 81053 259534 1 0 3 0x100083 ttyin getty 71951 90291 1 0 3 0x80 select sshd 57505 176415 4089 74 3 0x100092 bpf pflogd 4089 360622 1 0 3 0x80 netio pflogd 72418 259145 31107 73 3 0x100090 kqread syslogd 31107 209837 1 0 3 0x100082 netio syslogd 32370 275897 1 77 7 0x100090 dhclient 67453 69577 1 0 3 0x80 poll dhclient 56821 110442 0 0 3 0x14200 bored smr 51875 6823 0 0 3 0x14200 pgzero zerothread 82710 284663 0 0 3 0x14200 aiodoned aiodoned 56854 113056 0 0 3 0x14200 syncer update 10802 385603 0 0 3 0x14200 cleaner cleaner 14786 475747 0 0 3 0x14200 reaper reaper 22398 22293 0 0 3 0x14200 pgdaemon pagedaemon 62669 128986 0 0 3 0x14200 bored crynlk 81011 446272 0 0 3 0x14200 bored crypto 45211 280402 0 0 3 0x40014200 acpi0 acpi0 25748 121516 0 0 3 0x40014200 idle1 8254 34183 0 0 3 0x14200 bored softnet 56404 513713 0 0 2 0x14200 systqmp 37841 382907 0 0 3 0x14200 bored systq 95693 268620 0 0 3 0x40014200 bored softclock 35254 355843 0 0 3 0x40014200 idle0 1 263180 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 (0xffffffff82647998) #0 witness_lock+0x4c7 #1 mtx_enter_try+0x102 #2 mtx_enter+0x4b #3 pool_get+0xbf #4 m_gethdr+0x4c #5 rtm_msg1+0x6e #6 rtm_send+0x120 #7 rt_ifa_del+0x3bb #8 in6_unlink_ifa+0x571 #9 in6_purgeaddr+0x1d7 #10 in6_ifdetach+0x74 #11 if_detach+0x148 #12 tun_clone_destroy+0x1f2 #13 tun_dev_close+0x160 #14 spec_close+0x311 #15 VOP_CLOSE+0xc0 #16 vn_closefile+0xd7 #17 fdrop+0xc2 #18 closef+0x11c 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 63 2K 2K 78643K 163 0 ifaddr 35 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 11 0K 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 72 12K 12K 78643K 947 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 5 0K 0K 78643K 7 0 temp 29 3029K 3093K 78643K 1865 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 11 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 3 1 0 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 10 0 0 1 0 1 1 0 8 0 pfstkey 112 10 0 0 1 0 1 1 0 8 0 pfstate 328 10 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 256 144 0 2 9 0 9 9 0 8 0 art_table 32 145 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 3989 0 3989 9 2 7 7 0 8 7 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 91 0 0 12 0 12 12 0 8 0 mtagpl 80 1 0 0 1 0 1 1 0 8 0 mbufpl 256 133 0 0 8 0 8 8 0 8 0 mbufpl: pool(0xffffffff82647988:mbufpl): free list modified: page 0xfffffd806d748000; item ordinal 0; addr 0xfffffd806d748300 (p 0xfffffd806dc51000); offset 0x0=0x0 pool(mbufpl): free list modified: page 0xfffffd806d748000; item ordinal 0; addr 0xfffffd806d748300 (p 0xfffffd806dc51000); offset 0x0=0x0 mbufpl: pool(0xffffffff82647988:mbufpl): page inconsistency: page 0xfffffd806d748000; item ordinal 1; addr 0x6472242952a343ce bufpl 280 2985 0 132 204 0 204 204 0 8 0 anonpl 16 22372 0 20769 14 2 12 12 0 124 4 amapchunkpl 152 741 0 676 4 0 4 4 0 158 0 amappl16 192 150 0 122 2 0 2 2 0 8 0 amappl15 184 1 0 0 1 0 1 1 0 8 0 amappl14 176 33 0 26 1 0 1 1 0 8 0 amappl13 168 28 0 26 2 1 1 1 0 8 0 amappl12 160 10 0 9 2 1 1 1 0 8 0 amappl11 152 56 0 41 1 0 1 1 0 8 0 amappl10 144 18 0 15 1 0 1 1 0 8 0 amappl9 136 232 0 230 1 0 1 1 0 8 0 amappl8 128 276 0 267 1 0 1 1 0 8 0 amappl7 120 113 0 102 1 0 1 1 0 8 0 amappl6 112 25 0 23 2 1 1 1 0 8 0 amappl5 104 134 0 120 1 0 1 1 0 8 0 amappl4 96 493 0 465 1 0 1 1 0 8 0 amappl3 88 105 0 100 1 0 1 1 0 8 0 amappl2 80 904 0 849 3 1 2 2 0 8 0 amappl1 72 15465 0 15036 22 4 18 18 0 8 7 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 6363 0 6339 2 0 2 2 0 8 0 vmmpepl 168 32735 0 31810 81 8 73 73 0 357 30 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 113814 0 109863 109 5 104 104 0 265 70 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 112 236 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(ffffffff824ebff0) at x86_ipi_db+0x1a x86_ipi_handler() at x86_ipi_handler+0xc6 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x23 __sanitizer_cov_trace_cmp4(ffffffff82640670,ffffffff82640670) at __sanitizer_cov_trace_cmp4+0x6b __mp_acquire_count(ffffffff82640670,2) at __mp_acquire_count+0x51 mi_switch() at mi_switch+0x392 sleep_finish(ffff800020ea70d0,1) at sleep_finish+0x113 sleep_finish_all(ffff800020ea70d0,1) at sleep_finish_all+0x32 tsleep(ffffffff82667d04,118,ffffffff8224b6c6,41de81) at tsleep+0x1cc doppoll(ffff800020e6d5f8,7f7ffffcc7b0,3,ffff800020ea7268,0,ffff800020ea7320) at doppoll+0x57e sys_poll(ffff800020e6d5f8,ffff800020ea72d0,ffff800020ea7320) at sys_poll+0xa6 syscall(ffff800020ea73a0) at syscall+0x4a4 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffcc790, count: 2 ddb{0}> trace x86_ipi_db(ffffffff824ebff0) at x86_ipi_db+0x1a x86_ipi_handler() at x86_ipi_handler+0xc6 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x23 __sanitizer_cov_trace_cmp4(ffffffff82640670,ffffffff82640670) at __sanitizer_cov_trace_cmp4+0x6b __mp_acquire_count(ffffffff82640670,2) at __mp_acquire_count+0x51 mi_switch() at mi_switch+0x392 sleep_finish(ffff800020ea70d0,1) at sleep_finish+0x113 sleep_finish_all(ffff800020ea70d0,1) at sleep_finish_all+0x32 tsleep(ffffffff82667d04,118,ffffffff8224b6c6,41de81) at tsleep+0x1cc doppoll(ffff800020e6d5f8,7f7ffffcc7b0,3,ffff800020ea7268,0,ffff800020ea7320) at doppoll+0x57e sys_poll(ffff800020e6d5f8,ffff800020ea72d0,ffff800020ea7320) at sys_poll+0xa6 syscall(ffff800020ea73a0) at syscall+0x4a4 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffcc790, count: -13 ddb{0}> machine ddbcpu 1 Stopped at db_enter+0x18: addq $0x8,%rsp db_enter() at db_enter+0x18 panic(ffffffff822737fc) at panic+0x15c pool_do_get(ffffffff82647988,2,ffff800020f5e9f8) at pool_do_get+0x439 pool_get(ffffffff82647988,2) at pool_get+0xeb m_gethdr(2,1) at m_gethdr+0x4c rtm_msg1(2,ffff800020f5eb50) at rtm_msg1+0x6e rtm_send(fffffd806f3cfcb0,2,0,0) at rtm_send+0x120 rt_ifa_del(ffff800000a0cc00,800100,ffff800000a0cc40,0) at rt_ifa_del+0x3bb in6_unlink_ifa(ffff800000a0cc00,ffff8000009d5000) at in6_unlink_ifa+0x571 in6_purgeaddr(ffff800000a0cc00) at in6_purgeaddr+0x1d7 in6_ifdetach(ffff8000009d5000) at in6_ifdetach+0x74 if_detach(ffff8000009d5000) at if_detach+0x148 tun_clone_destroy(ffff8000009d5000) at tun_clone_destroy+0x1f2 tun_dev_close(5d00,7) at tun_dev_close+0x160 end trace frame: 0xffff800020f5f090, count: 0 ddb{1}> trace db_enter() at db_enter+0x18 panic(ffffffff822737fc) at panic+0x15c pool_do_get(ffffffff82647988,2,ffff800020f5e9f8) at pool_do_get+0x439 pool_get(ffffffff82647988,2) at pool_get+0xeb m_gethdr(2,1) at m_gethdr+0x4c rtm_msg1(2,ffff800020f5eb50) at rtm_msg1+0x6e rtm_send(fffffd806f3cfcb0,2,0,0) at rtm_send+0x120 rt_ifa_del(ffff800000a0cc00,800100,ffff800000a0cc40,0) at rt_ifa_del+0x3bb in6_unlink_ifa(ffff800000a0cc00,ffff8000009d5000) at in6_unlink_ifa+0x571 in6_purgeaddr(ffff800000a0cc00) at in6_purgeaddr+0x1d7 in6_ifdetach(ffff8000009d5000) at in6_ifdetach+0x74 if_detach(ffff8000009d5000) at if_detach+0x148 tun_clone_destroy(ffff8000009d5000) at tun_clone_destroy+0x1f2 tun_dev_close(5d00,7) at tun_dev_close+0x160 spec_close(ffff800020f5f0a0) at spec_close+0x311 VOP_CLOSE(fffffd806e935008,7,fffffd807f7bfa20,ffff800020e6dd48) at VOP_CLOSE+0xc0 vn_closefile(fffffd806d0adac0,ffff800020e6dd48) at vn_closefile+0xd7 fdrop(fffffd806d0adac0,ffff800020e6dd48) at fdrop+0xc2 closef(fffffd806d0adac0,ffff800020e6dd48) at closef+0x11c fdfree(ffff800020e6dd48) at fdfree+0x101 exit1(ffff800020e6dd48,0,9,1) at exit1+0x32c postsig(ffff800020e6dd48,9) at postsig+0x4ed userret(ffff800020e6dd48) at userret+0x199 syscall(ffff800020f5f520) at syscall+0x55f Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffedcb0, count: -25 ddb{1}>