kern.securelevel: 0 -> 1 creating runtime link editor directory cache. preserving editor files. starting network daemons: sshd. starting local daemons:. Mon May 11 05:11:31 PDT 2020 OpenBSD/amd64 (ci-openbsd-multicore-5.c.syzkaller.internal) (tty00) Warning: Permanently added '10.128.0.14' (ECDSA) to the list of known hosts. 2020/05/11 05:11:43 parsed 1 programs 2020/05/11 05:11:47 executed programs: 0 login: panic: pool_do_get: mbufpl free list modified: page 0xfffffd806d84b000; item addr 0xfffffd806d84be00; offset 0x0=0x0 != 0xdfa2925431e2b51a Stopped at db_enter+0x18: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND db_enter() at db_enter+0x18 panic(ffffffff82272be9) at panic+0x15c pool_do_get(ffffffff82682370,2,ffff800020f667c8) at pool_do_get+0x439 pool_get(ffffffff82682370,2) at pool_get+0xeb m_get(2,3) at m_get+0x4c sbappendaddr(fffffd806f6e54b0,fffffd806f6e5538,ffffffff823c37e0,fffffd806d84bd00,0) at sbappendaddr+0x2e9 rtm_sendup(fffffd806f6e54b0,fffffd806d84b600,1) at rtm_sendup+0xef route_input(fffffd806d84b600,0,2) at route_input+0x1cc rtm_addr(d,ffff800000a21800) at rtm_addr+0x10b rt_ifa_del(ffff800000a21800,200404,ffff800000a21858,0) at rt_ifa_del+0x3ed rt_ifa_dellocal(ffff800000a21800) at rt_ifa_dellocal+0x149 in_purgeaddr(ffff800000a21800) at in_purgeaddr+0x12a in_ifdetach(ffff8000009d6000) at in_ifdetach+0x74 if_detach(ffff8000009d6000) at if_detach+0x140 end trace frame: 0xffff800020f66e00, 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 0xfffffd806d84b000; item addr 0xfffffd806d84be00; offset 0x0=0x0 != 0xdfa2925431e2b51a ddb{1}> trace db_enter() at db_enter+0x18 panic(ffffffff82272be9) at panic+0x15c pool_do_get(ffffffff82682370,2,ffff800020f667c8) at pool_do_get+0x439 pool_get(ffffffff82682370,2) at pool_get+0xeb m_get(2,3) at m_get+0x4c sbappendaddr(fffffd806f6e54b0,fffffd806f6e5538,ffffffff823c37e0,fffffd806d84bd00,0) at sbappendaddr+0x2e9 rtm_sendup(fffffd806f6e54b0,fffffd806d84b600,1) at rtm_sendup+0xef route_input(fffffd806d84b600,0,2) at route_input+0x1cc rtm_addr(d,ffff800000a21800) at rtm_addr+0x10b rt_ifa_del(ffff800000a21800,200404,ffff800000a21858,0) at rt_ifa_del+0x3ed rt_ifa_dellocal(ffff800000a21800) at rt_ifa_dellocal+0x149 in_purgeaddr(ffff800000a21800) at in_purgeaddr+0x12a in_ifdetach(ffff8000009d6000) at in_ifdetach+0x74 if_detach(ffff8000009d6000) at if_detach+0x140 tun_clone_destroy(ffff8000009d6000) at tun_clone_destroy+0x1f2 tun_dev_close(5d00,7) at tun_dev_close+0x160 spec_close(ffff800020f66ee0) at spec_close+0x311 VOP_CLOSE(fffffd806e26c4e8,7,fffffd807f7bf9c0,ffff800020e6c278) at VOP_CLOSE+0xc0 vn_closefile(fffffd806d0c4b58,ffff800020e6c278) at vn_closefile+0xd7 fdrop(fffffd806d0c4b58,ffff800020e6c278) at fdrop+0xc2 closef(fffffd806d0c4b58,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 syscall(ffff800020f67360) at syscall+0x55f Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffbd420, count: -27 ddb{1}> show registers rdi 0 rsi 0x1 rbp 0xffff800020f66610 rbx 0xffff800020f666c0 rdx 0x8b rcx 0x2 rax 0x1 r8 0xffffffff8156ba7f kprintf+0x16f r9 0x1 r10 0x7219811e2907571f r11 0x2334318314a2ded0 r12 0x3000000008 r13 0xffff800020f66620 r14 0x100 r15 0x1 rip 0xffffffff81e3ff58 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff800020f66600 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb{1}> show proc PROC (syz-executor.0) pid=107518 stat=onproc flags process=a proc=2000 pri=32, usrpri=86, nice=20 forw=0xffffffffffffffff, list=0xffff800020e6cc38,0xffffffff8267d7f8 process=0xffff800020e81348 user=0xffff800020f62000, vmspace=0xfffffd807f000cf0 estcpu=36, cpticks=2, pctcpu=0.0 user=0, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 70558 345926 46287 0 3 0x82 thrsleep syz-execprog 70558 203369 46287 0 3 0x4000082 thrsleep syz-execprog 70558 2738 46287 0 3 0x4000082 thrsleep syz-execprog 70558 42076 46287 0 3 0x4000082 thrsleep syz-execprog 70558 483758 46287 0 3 0x4000082 thrsleep syz-execprog 70558 504230 46287 0 3 0x4000082 wait syz-execprog 70558 294580 46287 0 3 0x4000082 thrsleep syz-execprog 70558 372387 46287 0 3 0x4000082 thrsleep syz-execprog 70558 173276 46287 0 3 0x4000082 kqread syz-execprog 46287 338397 98328 0 3 0x10008a pause ksh 98328 167335 48397 0 3 0x92 select sshd 95174 379989 1 0 3 0x100083 ttyin getty 48397 223899 1 0 3 0x80 select sshd 96768 24686 94969 74 3 0x100092 bpf pflogd 94969 94055 1 0 3 0x80 netio pflogd 7585 140456 9171 73 3 0x100090 kqread syslogd 9171 61909 1 0 3 0x100082 netio syslogd 48635 355255 1 77 3 0x100090 poll dhclient 25388 121481 1 0 3 0x80 poll dhclient 96883 158933 0 0 3 0x14200 bored smr 92628 45929 0 0 3 0x14200 pgzero zerothread 27064 18760 0 0 3 0x14200 aiodoned aiodoned 70842 250470 0 0 3 0x14200 syncer update 22670 435464 0 0 3 0x14200 cleaner cleaner 45984 452908 0 0 3 0x14200 reaper reaper 19405 26360 0 0 3 0x14200 pgdaemon pagedaemon 2357 262663 0 0 3 0x14200 bored crynlk 70414 163316 0 0 3 0x14200 bored crypto 19967 173313 0 0 3 0x40014200 acpi0 acpi0 39344 511062 0 0 3 0x40014200 idle1 99485 264779 0 0 3 0x14200 bored softnet 25409 372884 0 0 3 0x14200 bored systqmp 45809 51524 0 0 3 0x14200 bored systq 76349 366560 0 0 3 0x40014200 bored softclock 25846 220455 0 0 7 0x40014200 idle0 1 219955 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 (0xffffffff82682380) #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+0x1cc #8 rtm_addr+0x10b #9 rt_ifa_del+0x3ed #10 rt_ifa_dellocal+0x149 #11 in_purgeaddr+0x12a #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 9464 6395K 6395K 78643K 10557 0 pcb 13 8K 8K 78643K 13 0 rtable 79 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 1823 197K 290K 78643K 12980 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 72 12K 12K 78643K 945 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 3033K 3097K 78643K 1866 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 1 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 3 1 0 1 1 0 8 0 unpcb 120 29 0 19 1 0 1 1 0 8 0 syncache 264 5 0 5 1 0 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 256 143 0 2 9 0 9 9 0 8 0 art_table 32 144 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 1640 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 4205 0 4205 1 0 1 1 0 8 1 percpumem 16 31 0 0 1 0 1 1 0 8 0 scxspl 192 3811 0 3811 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 1 0 1 1 0 8 0 pipepl 120 154 0 143 1 0 1 1 0 8 0 fdescpl 496 226 0 212 3 0 3 3 0 8 0 filepl 152 1110 0 1054 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 1 0 1 1 0 8 0 processpl 984 241 0 212 5 0 5 5 0 8 1 procpl 624 249 0 212 4 0 4 4 0 8 1 sockpl 400 80 0 62 2 0 2 2 0 8 0 mcl4k 4096 3 0 0 1 0 1 1 0 8 0 mcl2k 2048 56 0 0 7 0 7 7 0 8 0 mtagpl 80 1 0 0 1 0 1 1 0 8 0 mbufpl 256 79 0 0 5 0 5 5 0 8 0 mbufpl: pool(0xffffffff82682370:mbufpl): free list modified: page 0xfffffd806d84b000; item ordinal 0; addr 0xfffffd806d84be00 (p 0xfffffd806dc56000); offset 0x0=0x0 pool(mbufpl): free list modified: page 0xfffffd806d84b000; item ordinal 0; addr 0xfffffd806d84be00 (p 0xfffffd806dc56000); offset 0x0=0x0 mbufpl: pool(0xffffffff82682370:mbufpl): page inconsistency: page 0xfffffd806d84b000; item ordinal 1; addr 0x2a605838037a6663 bufpl 280 2980 0 133 204 0 204 204 0 8 0 anonpl 16 22182 0 20569 13 1 12 12 0 124 3 amapchunkpl 152 839 0 774 4 0 4 4 0 158 0 amappl16 192 131 0 103 2 0 2 2 0 8 0 amappl15 184 1 0 1 1 1 0 1 0 8 0 amappl14 176 33 0 27 1 0 1 1 0 8 0 amappl13 168 20 0 19 1 0 1 1 0 8 0 amappl12 160 8 0 6 2 1 1 1 0 8 0 amappl11 152 51 0 36 1 0 1 1 0 8 0 amappl10 144 19 0 14 1 0 1 1 0 8 0 amappl9 136 235 0 233 1 0 1 1 0 8 0 amappl8 128 271 0 263 1 0 1 1 0 8 0 amappl7 120 113 0 103 1 0 1 1 0 8 0 amappl6 112 23 0 21 1 0 1 1 0 8 0 amappl5 104 134 0 120 1 0 1 1 0 8 0 amappl4 96 494 0 466 1 0 1 1 0 8 0 amappl3 88 106 0 100 1 0 1 1 0 8 0 amappl2 80 906 0 851 2 0 2 2 0 8 0 amappl1 72 15240 0 14828 24 6 18 18 0 8 8 amappl 80 475 0 447 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 6347 0 6323 2 0 2 2 0 8 0 vmmpepl 168 32601 0 31698 78 6 72 72 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 113332 0 109367 104 0 104 104 0 265 70 pmappl 232 225 0 212 1 0 1 1 0 8 0 extentpl 40 46 0 29 1 0 1 1 0 8 0 phpool 112 228 0 3 7 0 7 7 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp x86_ipi_db(ffffffff8248cff0) at x86_ipi_db+0x1a x86_ipi_handler() at x86_ipi_handler+0xc6 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x23 __mp_lock(ffffffff82662600) at __mp_lock+0x127 softintr_dispatch(0) at softintr_dispatch+0x4e Xsoftclock() at Xsoftclock+0x1f acpicpu_idle() at acpicpu_idle+0x331 sched_idle(ffffffff8248cff0) at sched_idle+0x3f7 end trace frame: 0x0, count: 7 ddb{0}> trace x86_ipi_db(ffffffff8248cff0) at x86_ipi_db+0x1a x86_ipi_handler() at x86_ipi_handler+0xc6 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x23 __mp_lock(ffffffff82662600) at __mp_lock+0x127 softintr_dispatch(0) at softintr_dispatch+0x4e Xsoftclock() at Xsoftclock+0x1f acpicpu_idle() at acpicpu_idle+0x331 sched_idle(ffffffff8248cff0) at sched_idle+0x3f7 end trace frame: 0x0, count: -8 ddb{0}> machine ddbcpu 1 Stopped at db_enter+0x18: addq $0x8,%rsp db_enter() at db_enter+0x18 panic(ffffffff82272be9) at panic+0x15c pool_do_get(ffffffff82682370,2,ffff800020f667c8) at pool_do_get+0x439 pool_get(ffffffff82682370,2) at pool_get+0xeb m_get(2,3) at m_get+0x4c sbappendaddr(fffffd806f6e54b0,fffffd806f6e5538,ffffffff823c37e0,fffffd806d84bd00,0) at sbappendaddr+0x2e9 rtm_sendup(fffffd806f6e54b0,fffffd806d84b600,1) at rtm_sendup+0xef route_input(fffffd806d84b600,0,2) at route_input+0x1cc rtm_addr(d,ffff800000a21800) at rtm_addr+0x10b rt_ifa_del(ffff800000a21800,200404,ffff800000a21858,0) at rt_ifa_del+0x3ed rt_ifa_dellocal(ffff800000a21800) at rt_ifa_dellocal+0x149 in_purgeaddr(ffff800000a21800) at in_purgeaddr+0x12a in_ifdetach(ffff8000009d6000) at in_ifdetach+0x74 if_detach(ffff8000009d6000) at if_detach+0x140 end trace frame: 0xffff800020f66e00, count: 0 ddb{1}> trace db_enter() at db_enter+0x18 panic(ffffffff82272be9) at panic+0x15c pool_do_get(ffffffff82682370,2,ffff800020f667c8) at pool_do_get+0x439 pool_get(ffffffff82682370,2) at pool_get+0xeb m_get(2,3) at m_get+0x4c sbappendaddr(fffffd806f6e54b0,fffffd806f6e5538,ffffffff823c37e0,fffffd806d84bd00,0) at sbappendaddr+0x2e9 rtm_sendup(fffffd806f6e54b0,fffffd806d84b600,1) at rtm_sendup+0xef route_input(fffffd806d84b600,0,2) at route_input+0x1cc rtm_addr(d,ffff800000a21800) at rtm_addr+0x10b rt_ifa_del(ffff800000a21800,200404,ffff800000a21858,0) at rt_ifa_del+0x3ed rt_ifa_dellocal(ffff800000a21800) at rt_ifa_dellocal+0x149 in_purgeaddr(ffff800000a21800) at in_purgeaddr+0x12a in_ifdetach(ffff8000009d6000) at in_ifdetach+0x74 if_detach(ffff8000009d6000) at if_detach+0x140 tun_clone_destroy(ffff8000009d6000) at tun_clone_destroy+0x1f2 tun_dev_close(5d00,7) at tun_dev_close+0x160 spec_close(ffff800020f66ee0) at spec_close+0x311 VOP_CLOSE(fffffd806e26c4e8,7,fffffd807f7bf9c0,ffff800020e6c278) at VOP_CLOSE+0xc0 vn_closefile(fffffd806d0c4b58,ffff800020e6c278) at vn_closefile+0xd7 fdrop(fffffd806d0c4b58,ffff800020e6c278) at fdrop+0xc2 closef(fffffd806d0c4b58,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 syscall(ffff800020f67360) at syscall+0x55f Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffbd420, count: -27 ddb{1}>