kern.securelevel: 0 -> 1 creating runtime link editor directory cache. preserving editor files. starting network daemons: sshd. starting local daemons:. Sat Jul 18 00:24:55 PDT 2020 OpenBSD/amd64 (ci-openbsd-multicore-5.c.syzkaller.internal) (tty00) Warning: Permanently added '10.128.1.35' (ECDSA) to the list of known hosts. 2020/07/18 00:34:09 parsed 1 programs 2020/07/18 00:34:15 executed programs: 0 login: panic: pool_do_get: mbufpl free list modified: page 0xfffffd806f2df000; item addr 0xfffffd806f2dfe00; offset 0x0=0x0 != 0x62b15d1c74c6a78d Stopped at db_enter+0x18: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND *336210 58802 0 0 0 1K syz-executor.0 db_enter() at db_enter+0x18 panic(ffffffff824959a0) at panic+0x15c pool_do_get(ffffffff82907dc0,2,ffff800020edba48) at pool_do_get+0x439 pool_get(ffffffff82907dc0,2) at pool_get+0xeb m_get(2,3) at m_get+0x4c rt_ifa_del(ffff800000aa2700,800100,ffff800000aa2740,0) at rt_ifa_del+0xa1 in6_unlink_ifa(ffff800000aa2700,ffff800000ac6000) at in6_unlink_ifa+0x571 in6_update_ifa(ffff800000ac6000,ffff800020edc050,0) at in6_update_ifa+0x13e7 in6_ioctl_change_ifaddr(8080691a,ffff800020edc050,ffff800000ac6000) at in6_ioctl_change_ifaddr+0x40c ifioctl(fffffd806f68c960,8080691a,ffff800020edc050,ffff800020ddd5f8) at ifioctl+0xe70 soo_ioctl(fffffd806cf6d698,8080691a,ffff800020edc050,ffff800020ddd5f8) at soo_ioctl+0x27c sys_ioctl(ffff800020ddd5f8,ffff800020edc168,ffff800020edc1b0) at sys_ioctl+0x4a5 syscall(ffff800020edc230) at syscall+0x4a4 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffe7e80, count: 1 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 0xfffffd806f2df000; item addr 0xfffffd806f2dfe00; offset 0x0=0x0 != 0x62b15d1c74c6a78d ddb{1}> trace db_enter() at db_enter+0x18 panic(ffffffff824959a0) at panic+0x15c pool_do_get(ffffffff82907dc0,2,ffff800020edba48) at pool_do_get+0x439 pool_get(ffffffff82907dc0,2) at pool_get+0xeb m_get(2,3) at m_get+0x4c rt_ifa_del(ffff800000aa2700,800100,ffff800000aa2740,0) at rt_ifa_del+0xa1 in6_unlink_ifa(ffff800000aa2700,ffff800000ac6000) at in6_unlink_ifa+0x571 in6_update_ifa(ffff800000ac6000,ffff800020edc050,0) at in6_update_ifa+0x13e7 in6_ioctl_change_ifaddr(8080691a,ffff800020edc050,ffff800000ac6000) at in6_ioctl_change_ifaddr+0x40c ifioctl(fffffd806f68c960,8080691a,ffff800020edc050,ffff800020ddd5f8) at ifioctl+0xe70 soo_ioctl(fffffd806cf6d698,8080691a,ffff800020edc050,ffff800020ddd5f8) at soo_ioctl+0x27c sys_ioctl(ffff800020ddd5f8,ffff800020edc168,ffff800020edc1b0) at sys_ioctl+0x4a5 syscall(ffff800020edc230) at syscall+0x4a4 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffe7e80, count: -14 ddb{1}> show registers rdi 0 rsi 0x1 rbp 0xffff800020edb890 rbx 0xffff800020edb940 rdx 0x8b rcx 0x2 rax 0x1 r8 0xffffffff81c18a0f kprintf+0x16f r9 0x1 r10 0x2 r11 0x75fda704b4b11759 r12 0x3000000008 r13 0xffff800020edb8a0 r14 0x100 r15 0x1 rip 0xffffffff81a6ce18 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff800020edb880 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb{1}> show proc PROC (syz-executor.0) pid=336210 stat=onproc flags process=0 proc=0 pri=50, usrpri=50, nice=20 forw=0xffffffffffffffff, list=0xffff800020dddd48,0xffffffff82915f90 process=0xffff800020df0010 user=0xffff800020ed7000, vmspace=0xfffffd807f000450 estcpu=36, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND *58802 336210 65053 0 7 0 syz-executor.0 65053 19708 98845 0 3 0x82 nanosleep syz-executor.0 98845 319227 47904 0 3 0x82 thrsleep syz-execprog 98845 461587 47904 0 3 0x4000082 nanosleep syz-execprog 98845 273266 47904 0 3 0x4000082 thrsleep syz-execprog 98845 8679 47904 0 3 0x4000082 thrsleep syz-execprog 98845 104871 47904 0 3 0x4000082 thrsleep syz-execprog 98845 113566 47904 0 3 0x4000082 nanosleep syz-execprog 98845 186716 47904 0 3 0x4000082 thrsleep syz-execprog 98845 8568 47904 0 3 0x4000082 thrsleep syz-execprog 98845 202266 47904 0 3 0x4000082 kqread syz-execprog 47904 274488 93715 0 3 0x10008a pause ksh 93715 452968 25142 0 3 0x92 select sshd 22698 501166 1 0 3 0x100083 ttyin getty 25142 257210 1 0 3 0x80 select sshd 3546 509858 53742 74 3 0x100092 bpf pflogd 53742 115225 1 0 3 0x80 netio pflogd 35019 406165 16400 73 3 0x100090 kqread syslogd 16400 254626 1 0 3 0x100082 netio syslogd 84531 420086 1 77 3 0x100090 poll dhclient 58961 428163 1 0 3 0x80 poll dhclient 49231 412920 0 0 3 0x14200 bored smr 81820 64956 0 0 3 0x14200 pgzero zerothread 99042 66927 0 0 3 0x14200 aiodoned aiodoned 80749 132877 0 0 3 0x14200 syncer update 72420 250166 0 0 3 0x14200 cleaner cleaner 69538 469357 0 0 3 0x14200 reaper reaper 98401 273358 0 0 3 0x14200 pgdaemon pagedaemon 74094 497279 0 0 3 0x14200 bored crynlk 13571 242948 0 0 3 0x14200 bored crypto 46489 112023 0 0 3 0x40014200 acpi0 acpi0 69236 185706 0 0 3 0x40014200 idle1 99552 128296 0 0 3 0x14200 bored softnet 62657 320325 0 0 3 0x14200 bored systqmp 53432 282977 0 0 3 0x14200 bored systq 94413 106094 0 0 3 0x40014200 bored softclock 98714 294519 0 0 7 0x40014200 idle0 1 325140 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 (0xffffffff82907dd0) #0 witness_lock+0x4c7 #1 mtx_enter_try+0x102 #2 mtx_enter+0x4b #3 pool_get+0xbf #4 m_get+0x4c #5 rt_ifa_del+0xa1 #6 in6_unlink_ifa+0x571 #7 in6_update_ifa+0x13e7 #8 in6_ioctl_change_ifaddr+0x40c #9 ifioctl+0xe70 #10 soo_ioctl+0x27c #11 sys_ioctl+0x4a5 #12 syscall+0x4a4 #13 Xsyscall+0x128 Process 58802 (syz-executor.0) thread 0xffff800020ddd5f8 (336210) exclusive rwlock netlock r = 0 (0xffffffff82728958) #0 witness_lock+0x4c7 #1 in6_ioctl_change_ifaddr+0x155 #2 ifioctl+0xe70 #3 soo_ioctl+0x27c #4 sys_ioctl+0x4a5 #5 syscall+0x4a4 #6 Xsyscall+0x128 exclusive kernel_lock &kernel_lock r = 0 (0xffffffff828eb278) #0 witness_lock+0x4c7 #1 soo_ioctl+0x26a #2 sys_ioctl+0x4a5 #3 syscall+0x4a4 #4 Xsyscall+0x128 exclusive mutex mbufpl r = 0 (0xffffffff82907dd0) #0 witness_lock+0x4c7 #1 mtx_enter_try+0x102 #2 mtx_enter+0x4b #3 pool_get+0xbf #4 m_get+0x4c #5 rt_ifa_del+0xa1 #6 in6_unlink_ifa+0x571 #7 in6_update_ifa+0x13e7 #8 in6_ioctl_change_ifaddr+0x40c #9 ifioctl+0xe70 #10 soo_ioctl+0x27c #11 sys_ioctl+0x4a5 #12 syscall+0x4a4 #13 Xsyscall+0x128 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 9467 6396K 6396K 78643K 10560 0 pcb 13 8K 8K 78643K 13 0 rtable 83 2K 2K 78643K 163 0 ifaddr 38 9K 9K 78643K 216 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 3 8K 12K 78643K 195 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 74 12K 12K 78643K 1122 0 UVM aobj 3 2K 2K 78643K 3 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 3853K 3917K 78643K 2227 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 0 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 1 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 2 0 1 0 8 0 tcpcb 544 8 0 5 1 0 1 1 0 8 0 inpcb 296 211 0 204 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 10 0 6 2 1 1 1 0 8 0 pfstkey 112 10 0 6 2 1 1 1 0 8 0 pfstate 328 10 0 6 2 1 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 0 10 0 10 10 0 8 0 art_table 32 146 0 0 2 0 2 2 0 8 0 art_node 16 33 0 3 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1601 0 199 88 0 88 88 0 8 0 ffsino 272 1601 0 199 94 0 94 94 0 8 0 nchpl 144 1997 0 393 60 0 60 60 0 8 0 uvmvnodes 72 1611 0 0 30 0 30 30 0 8 0 vnodes 208 1611 0 0 85 0 85 85 0 8 0 namei 1024 4938 0 4938 2 1 1 1 0 8 1 percpumem 16 31 0 0 1 0 1 1 0 8 0 scxspl 192 5764 0 5764 28 27 1 7 0 8 1 plimitpl 152 15 0 8 1 0 1 1 0 8 0 sigapl 424 418 0 388 4 0 4 4 0 8 0 knotepl 112 47 0 36 1 0 1 1 0 8 0 kqueuepl 144 2 0 0 1 0 1 1 0 8 0 pipepl 304 77 0 70 2 1 1 1 0 8 0 fdescpl 496 403 0 388 3 0 3 3 0 8 0 filepl 152 1470 0 1411 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 144 388 0 388 2 1 1 1 0 8 1 processpl 992 418 0 388 5 0 5 5 0 8 1 procpl 624 426 0 388 3 0 3 3 0 8 0 sockpl 400 257 0 238 2 0 2 2 0 8 0 mcl4k 4096 2 0 0 1 0 1 1 0 8 0 mcl2k 2048 72 0 0 9 0 9 9 0 8 0 mtagpl 96 1 0 0 1 0 1 1 0 8 0 mbufpl 256 109 0 0 6 0 6 6 0 8 0 mbufpl: pool(0xffffffff82907dc0:mbufpl): free list modified: page 0xfffffd806f2df000; item ordinal 0; addr 0xfffffd806f2dfe00 (p 0xfffffd806f272000); offset 0x0=0x0 pool(mbufpl): free list modified: page 0xfffffd806f2df000; item ordinal 0; addr 0xfffffd806f2dfe00 (p 0xfffffd806f272000); offset 0x0=0x0 mbufpl: pool(0xffffffff82907dc0:mbufpl): page inconsistency: page 0xfffffd806f2df000; item ordinal 1; addr 0x11c38c2c099f614d bufpl 280 3227 0 132 222 0 222 222 0 8 0 anonpl 16 26995 0 25232 14 2 12 12 0 124 4 amapchunkpl 152 967 0 900 5 0 5 5 0 158 2 amappl16 192 689 0 648 3 0 3 3 0 8 0 amappl15 184 182 0 178 1 0 1 1 0 8 0 amappl14 176 30 0 26 1 0 1 1 0 8 0 amappl13 168 22 0 20 2 1 1 1 0 8 0 amappl12 160 7 0 7 1 1 0 1 0 8 0 amappl11 152 57 0 42 1 0 1 1 0 8 0 amappl10 144 204 0 198 1 0 1 1 0 8 0 amappl9 136 230 0 229 1 0 1 1 0 8 0 amappl8 128 274 0 266 1 0 1 1 0 8 0 amappl7 120 293 0 279 1 0 1 1 0 8 0 amappl6 112 23 0 20 2 1 1 1 0 8 0 amappl5 104 309 0 294 1 0 1 1 0 8 0 amappl4 96 498 0 471 1 0 1 1 0 8 0 amappl3 88 106 0 100 1 0 1 1 0 8 0 amappl2 80 1266 0 1203 3 1 2 2 0 8 0 amappl1 72 16790 0 16360 23 5 18 18 0 8 8 amappl 80 651 0 622 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 2 0 0 1 0 1 1 0 8 0 uaddrrnd 24 403 0 388 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 403 0 388 1 0 1 1 0 8 0 vmmpekpl 168 6768 0 6741 2 0 2 2 0 8 0 vmmpepl 168 40740 0 39747 84 11 73 73 0 357 29 vmsppl 368 402 0 388 2 0 2 2 0 8 0 pdppl 4096 813 0 776 6 0 6 6 0 8 1 pvpl 32 132834 0 128633 110 6 104 104 0 265 70 pmappl 232 402 0 388 1 0 1 1 0 8 0 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 232 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(ffffffff82708ff0) at x86_ipi_db+0x1a x86_ipi_handler() at x86_ipi_handler+0xc6 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x23 __mp_lock(ffffffff828eb070) at __mp_lock+0x127 softintr_dispatch(0) at softintr_dispatch+0x4e Xsoftclock() at Xsoftclock+0x1f acpicpu_idle() at acpicpu_idle+0x331 sched_idle(ffffffff82708ff0) at sched_idle+0x3f7 end trace frame: 0x0, count: 7 ddb{0}> trace x86_ipi_db(ffffffff82708ff0) at x86_ipi_db+0x1a x86_ipi_handler() at x86_ipi_handler+0xc6 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x23 __mp_lock(ffffffff828eb070) at __mp_lock+0x127 softintr_dispatch(0) at softintr_dispatch+0x4e Xsoftclock() at Xsoftclock+0x1f acpicpu_idle() at acpicpu_idle+0x331 sched_idle(ffffffff82708ff0) 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(ffffffff824959a0) at panic+0x15c pool_do_get(ffffffff82907dc0,2,ffff800020edba48) at pool_do_get+0x439 pool_get(ffffffff82907dc0,2) at pool_get+0xeb m_get(2,3) at m_get+0x4c rt_ifa_del(ffff800000aa2700,800100,ffff800000aa2740,0) at rt_ifa_del+0xa1 in6_unlink_ifa(ffff800000aa2700,ffff800000ac6000) at in6_unlink_ifa+0x571 in6_update_ifa(ffff800000ac6000,ffff800020edc050,0) at in6_update_ifa+0x13e7 in6_ioctl_change_ifaddr(8080691a,ffff800020edc050,ffff800000ac6000) at in6_ioctl_change_ifaddr+0x40c ifioctl(fffffd806f68c960,8080691a,ffff800020edc050,ffff800020ddd5f8) at ifioctl+0xe70 soo_ioctl(fffffd806cf6d698,8080691a,ffff800020edc050,ffff800020ddd5f8) at soo_ioctl+0x27c sys_ioctl(ffff800020ddd5f8,ffff800020edc168,ffff800020edc1b0) at sys_ioctl+0x4a5 syscall(ffff800020edc230) at syscall+0x4a4 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffe7e80, count: 1 ddb{1}> trace db_enter() at db_enter+0x18 panic(ffffffff824959a0) at panic+0x15c pool_do_get(ffffffff82907dc0,2,ffff800020edba48) at pool_do_get+0x439 pool_get(ffffffff82907dc0,2) at pool_get+0xeb m_get(2,3) at m_get+0x4c rt_ifa_del(ffff800000aa2700,800100,ffff800000aa2740,0) at rt_ifa_del+0xa1 in6_unlink_ifa(ffff800000aa2700,ffff800000ac6000) at in6_unlink_ifa+0x571 in6_update_ifa(ffff800000ac6000,ffff800020edc050,0) at in6_update_ifa+0x13e7 in6_ioctl_change_ifaddr(8080691a,ffff800020edc050,ffff800000ac6000) at in6_ioctl_change_ifaddr+0x40c ifioctl(fffffd806f68c960,8080691a,ffff800020edc050,ffff800020ddd5f8) at ifioctl+0xe70 soo_ioctl(fffffd806cf6d698,8080691a,ffff800020edc050,ffff800020ddd5f8) at soo_ioctl+0x27c sys_ioctl(ffff800020ddd5f8,ffff800020edc168,ffff800020edc1b0) at sys_ioctl+0x4a5 syscall(ffff800020edc230) at syscall+0x4a4 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffe7e80, count: -14