kern.securelevel: 0 -> 1 creating runtime link editor directory cache. preserving editor files. starting network daemons: sshd. starting local daemons:. Tue Mar 22 02:50:52 PDT 2022 OpenBSD/amd64 (ci-openbsd-multicore-5.c.syzkaller.internal) (tty00) Warning: Permanently added '10.128.0.50' (ED25519) to the list of known hosts. executing program login: 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 *470996 89265 0 0 0 1 syz-executor3271425245 4946 47649 0 0 0 0 syz-executor3271425245 db_enter() at db_enter+0x18 panic(ffffffff825a0385) at panic+0x177 witness_checkorder(ffffffff82b7e900,9,0) at witness_checkorder+0x116d __mp_lock(ffffffff82b7e6f8) at __mp_lock+0xa1 selwakeup(fffffd806d3226d8) at selwakeup+0x16 sorwakeup(fffffd806d3225c0) at sorwakeup+0xc9 rip6_input(ffff800021203c88,ffff800021203c94,85,18) at rip6_input+0x692 ip_deliver(ffff800021203c88,ffff800021203c94,85,18) at ip_deliver+0x322 ip6_input_if(ffff800021203c88,ffff800021203c94,29,0,ffff80000019f2a8) at ip6_input_if+0x920 ipv6_input(ffff80000019f2a8,fffffd806d29a200) at ipv6_input+0x48 if_input_local(ffff80000019f2a8,fffffd806d29a200,18) at if_input_local+0x136 ip6_output(fffffd806d356a00,ffff800000bc6200,fffffd806f67b900,0,0,fffffd806f67b888) at ip6_output+0xf57 rip6_output(fffffd806d356a00,fffffd806d322200,ffff800021203ff0,0) at rip6_output+0x4ad rip6_usrreq(fffffd806d322200,9,fffffd806d356a00,0,0,ffff80002115fa40) at rip6_usrreq+0x5d3 end trace frame: 0xffff800021204170, 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 *cpu1: acquiring blockable sleep lock with spinlock or critical section held (kernel_lock) &kernel_lock ddb{1}> trace db_enter() at db_enter+0x18 panic(ffffffff825a0385) at panic+0x177 witness_checkorder(ffffffff82b7e900,9,0) at witness_checkorder+0x116d __mp_lock(ffffffff82b7e6f8) at __mp_lock+0xa1 selwakeup(fffffd806d3226d8) at selwakeup+0x16 sorwakeup(fffffd806d3225c0) at sorwakeup+0xc9 rip6_input(ffff800021203c88,ffff800021203c94,85,18) at rip6_input+0x692 ip_deliver(ffff800021203c88,ffff800021203c94,85,18) at ip_deliver+0x322 ip6_input_if(ffff800021203c88,ffff800021203c94,29,0,ffff80000019f2a8) at ip6_input_if+0x920 ipv6_input(ffff80000019f2a8,fffffd806d29a200) at ipv6_input+0x48 if_input_local(ffff80000019f2a8,fffffd806d29a200,18) at if_input_local+0x136 ip6_output(fffffd806d356a00,ffff800000bc6200,fffffd806f67b900,0,0,fffffd806f67b888) at ip6_output+0xf57 rip6_output(fffffd806d356a00,fffffd806d322200,ffff800021203ff0,0) at rip6_output+0x4ad rip6_usrreq(fffffd806d322200,9,fffffd806d356a00,0,0,ffff80002115fa40) at rip6_usrreq+0x5d3 sosend(fffffd806d322200,0,ffff800021204228,0,0,0) at sosend+0x632 dofilewritev(ffff80002115fa40,4,ffff800021204228,0,ffff800021204320) at dofilewritev+0x19c sys_write(ffff80002115fa40,ffff8000212042c8,ffff800021204320) at sys_write+0x83 syscall(ffff800021204390) at syscall+0x489 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffc0ef0, count: -19 ddb{1}> show registers rdi 0 rsi 0x1 rbp 0xffff8000212037a0 rbx 0xffff800020ce9bff rdx 0x3fd rcx 0 rax 0x68 r8 0x101010101010101 r9 0x8080808080808080 r10 0x7beb66679ac2adab r11 0x80e3a55354da103c r12 0xffff800020ce9a00 r13 0 r14 0 r15 0x1 rip 0xffffffff81828e88 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff800021203790 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb{1}> show proc PROC (syz-executor3271425245) pid=470996 stat=onproc flags process=0 proc=0 pri=4, usrpri=50, nice=20 forw=0xffffffffffffffff, list=0xffff80002115fce0,0xffff80002115f7b0 process=0xffff8000ffffa570 user=0xffff8000211ff000, vmspace=0xfffffd806d553e70 estcpu=0, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 2119 340300 98653 0 2 0 syz-executor3271425245 90848 422240 71733 0 2 0 syz-executor3271425245 43227 139581 47649 0 2 0 syz-executor3271425245 38629 358508 24500 0 3 0 netlock syz-executor3271425245 31330 140632 443 0 2 0 syz-executor3271425245 28452 273076 49286 0 2 0 syz-executor3271425245 *89265 470996 15964 0 7 0 syz-executor3271425245 71733 147071 49286 0 3 0x80 nanoslp syz-executor3271425245 98653 520960 49286 0 3 0x80 nanoslp syz-executor3271425245 443 179982 49286 0 3 0x80 nanoslp syz-executor3271425245 47649 4946 49286 0 7 0 syz-executor3271425245 65176 329588 10170 0 2 0 syz-executor3271425245 24500 377022 49286 0 3 0x80 nanoslp syz-executor3271425245 15964 209198 49286 0 3 0x80 nanoslp syz-executor3271425245 10170 108934 49286 0 3 0x80 nanoslp syz-executor3271425245 49286 384835 25534 0 2 0x2 syz-executor3271425245 25534 63382 78883 0 3 0x10008a sigsusp ksh 78883 452007 85985 0 2 0x12 sshd 10103 412396 1 0 3 0x100083 ttyin getty 85985 77092 1 0 3 0x88 kqread sshd 51130 135263 26245 74 3 0x1100092 bpf pflogd 26245 282268 1 0 3 0x80 netio pflogd 88638 79127 64093 73 3 0x1100090 kqread syslogd 64093 279571 1 0 3 0x100082 netio syslogd 62827 233001 1 0 3 0x100080 kqread resolvd 83842 380355 80994 77 3 0x100092 kqread dhcpleased 78606 356584 80994 77 3 0x100092 kqread dhcpleased 80994 270038 1 0 3 0x80 kqread dhcpleased 29927 464633 0 0 3 0x14200 bored smr 50706 518132 0 0 2 0x14200 zerothread 1749 337510 0 0 3 0x14200 aiodoned aiodoned 94532 262275 0 0 3 0x14200 syncer update 69886 179742 0 0 3 0x14200 cleaner cleaner 62066 14955 0 0 3 0x14200 reaper reaper 24447 518225 0 0 3 0x14200 pgdaemon pagedaemon 5213 502891 0 0 3 0x14200 bored viomb 47411 500058 0 0 3 0x40014200 acpi0 acpi0 9490 282364 0 0 3 0x40014200 idle1 42040 277422 0 0 3 0x14200 bored softnet 9715 26061 0 0 3 0x14200 bored systqmp 81258 477604 0 0 3 0x14200 bored systq 85526 17715 0 0 3 0x40014200 bored softclock 65091 163113 0 0 3 0x40014200 idle0 1 100975 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks CPU 1: exclusive mutex &table->inpt_mtx r = 0 (0xffffffff82b7fb80) #0 witness_lock+0x44d #1 mtx_enter_try+0x100 #2 mtx_enter+0x4b #3 rip6_input+0x1cf #4 ip_deliver+0x322 #5 ip6_input_if+0x920 #6 ipv6_input+0x48 #7 if_input_local+0x136 #8 ip6_output+0xf57 #9 rip6_output+0x4ad #10 rip6_usrreq+0x5d3 #11 sosend+0x632 #12 dofilewritev+0x19c #13 sys_write+0x83 #14 syscall+0x489 #15 Xsyscall+0x128 Process 89265 (syz-executor3271425245) thread 0xffff80002115fa40 (470996) exclusive rwlock netlock r = 0 (0xffffffff82980490) #0 witness_lock+0x44d #1 solock+0x86 #2 sosend+0x517 #3 dofilewritev+0x19c #4 sys_write+0x83 #5 syscall+0x489 #6 Xsyscall+0x128 exclusive mutex &table->inpt_mtx r = 0 (0xffffffff82b7fb80) #0 witness_lock+0x44d #1 mtx_enter_try+0x100 #2 mtx_enter+0x4b #3 rip6_input+0x1cf #4 ip_deliver+0x322 #5 ip6_input_if+0x920 #6 ipv6_input+0x48 #7 if_input_local+0x136 #8 ip6_output+0xf57 #9 rip6_output+0x4ad #10 rip6_usrreq+0x5d3 #11 sosend+0x632 #12 dofilewritev+0x19c #13 sys_write+0x83 #14 syscall+0x489 #15 Xsyscall+0x128 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10149 6454K 6455K 78643K 11239 0 pcb 17 8K 8K 78643K 21 0 rtable 62 2K 2K 78643K 112 0 ifaddr 29 8K 8K 78643K 32 0 counters 40 33K 33K 78643K 40 0 ioctlops 0 0K 4K 78643K 1479 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 5 0 vnodes 1167 73K 73K 78643K 1180 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 1697 195K 286K 78643K 12548 0 file desc 1 0K 0K 78643K 1 0 proc 67 87K 87K 78643K 282 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 2 0K 0K 78643K 2 0 in_multi 14 0K 0K 78643K 14 0 ether_multi 2 0K 0K 78643K 2 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 25 122K 122K 78643K 25 0 exec 0 0K 2K 78643K 432 0 tdb 3 0K 0K 78643K 3 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 114 60K 60K 78643K 2207 0 UVM aobj 3 2K 2K 78643K 3 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 4 0K 0K 78643K 4 0 NDP 4 0K 0K 78643K 4 0 temp 24 4694K 4757K 78643K 3327 0 kqueue 11 16K 18K 78643K 24 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 plcache 128 22 0 0 1 0 1 1 0 8 0 rtpcb 120 17 0 14 1 0 1 1 0 8 0 rtentry 112 23 0 1 1 0 1 1 0 8 0 unpcb 136 35 0 20 1 0 1 1 0 8 0 syncache 296 5 0 5 2 1 1 1 0 8 1 tcpcb 736 10 0 5 1 0 1 1 0 8 0 arp 120 2 0 0 1 0 1 1 0 8 0 inpcb 312 38 0 28 1 0 1 1 0 8 0 pfosfp 40 1428 0 1005 5 0 5 5 0 8 0 pfosfpen 112 1428 0 714 21 0 21 21 0 8 0 pfstitem 24 9 0 0 1 0 1 1 0 8 0 pfstkey 112 9 0 0 1 0 1 1 0 8 0 pfstate 320 9 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 96 0 0 6 0 6 6 0 8 0 art_table 32 97 0 0 1 0 1 1 0 8 0 art_node 16 22 0 2 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1424 0 39 87 0 87 87 0 8 0 ffsino 272 1424 0 39 93 0 93 93 0 8 0 nchpl 144 1599 0 49 58 0 58 58 0 8 0 uvmvnodes 80 1434 0 0 30 0 30 30 0 8 0 vnodes 224 1434 0 0 85 0 85 85 0 8 0 namei 1024 4422 0 4422 2 1 1 1 0 8 1 percpumem 16 32 0 0 1 0 1 1 0 8 0 scxspl 216 4028 0 4028 10 2 8 8 0 8 8 plimitpl 152 23 0 9 1 0 1 1 0 8 0 sigapl 424 335 0 291 5 0 5 5 0 8 0 knotepl 120 50 0 0 2 0 2 2 0 8 0 kqueuepl 216 20 0 13 1 0 1 1 0 8 0 pipepl 336 86 0 83 2 1 1 1 0 8 0 fdescpl 496 321 0 291 4 0 4 4 0 8 0 filepl 152 1151 0 1089 3 0 3 3 0 8 0 lockfpl 104 6 0 4 1 0 1 1 0 8 0 lockfspl 48 4 0 2 1 0 1 1 0 8 0 sessionpl 144 25 0 9 1 0 1 1 0 8 0 pgrppl 48 25 0 9 1 0 1 1 0 8 0 ucredpl 96 69 0 57 1 0 1 1 0 8 0 zombiepl 144 291 0 291 2 1 1 1 0 8 1 processpl 1064 335 0 291 3 0 3 3 0 8 0 procpl 672 335 0 291 4 0 4 4 0 8 0 sockpl 480 90 0 62 5 1 4 4 0 8 0 mcl8k 8192 6 0 0 1 0 1 1 0 8 0 mcl4k 4096 2 0 0 1 0 1 1 0 8 0 mcl2k 2048 69 0 0 8 0 8 8 0 8 0 mtagpl 96 3 0 0 1 0 1 1 0 8 0 mbufpl 256 117 0 0 7 0 7 7 0 8 0 bufpl 288 2017 0 93 138 0 138 138 0 8 0 anonpl 24 41623 0 39049 20 3 17 17 0 186 1 amapchunkpl 152 4009 0 3834 7 0 7 7 0 158 0 amappl16 200 32 0 30 2 1 1 1 0 8 0 amappl15 192 67 0 64 1 0 1 1 0 8 0 amappl13 176 34 0 33 2 1 1 1 0 8 0 amappl12 168 12 0 12 2 1 1 1 0 8 1 amappl11 160 49 0 35 1 0 1 1 0 8 0 amappl10 152 2 0 0 1 0 1 1 0 8 0 amappl9 144 457 0 455 1 0 1 1 0 8 0 amappl8 136 371 0 367 1 0 1 1 0 8 0 amappl7 128 65 0 62 1 0 1 1 0 8 0 amappl6 120 135 0 106 1 0 1 1 0 8 0 amappl5 112 178 0 166 1 0 1 1 0 8 0 amappl4 104 642 0 619 1 0 1 1 0 8 0 amappl3 96 121 0 112 1 0 1 1 0 8 0 amappl2 88 369 0 331 1 0 1 1 0 8 0 amappl1 80 8794 0 8373 11 2 9 9 0 8 0 amappl 88 1918 0 1829 2 0 2 2 0 92 0 dma4096 4096 1 0 1 1 1 0 1 0 8 0 dma1024 1024 1 0 0 1 0 1 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 72 2 0 0 1 0 1 1 0 8 0 uaddrrnd 24 321 0 291 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 321 0 291 1 0 1 1 0 8 0 vmmpekpl 168 6239 0 6222 1 0 1 1 0 8 0 vmmpepl 168 26805 0 25693 56 7 49 49 0 357 0 vmsppl 368 320 0 291 3 0 3 3 0 8 0 rwobjpl 56 9525 0 7519 29 0 29 29 0 8 0 pdppl 4096 649 0 582 85 18 67 67 0 8 0 pvpl 32 135490 0 130813 45 6 39 39 0 265 1 pmappl 248 320 0 291 2 0 2 2 0 8 0 extentpl 40 58 0 38 1 0 1 1 0 8 0 phpool 112 444 0 23 13 0 13 13 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp x86_ipi_db(ffffffff82948ff0) at x86_ipi_db+0x1a x86_ipi_handler() at x86_ipi_handler+0xb7 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x23 __mp_lock(ffffffff82b7e6f8) at __mp_lock+0x129 softintr_dispatch(0) at softintr_dispatch+0x4e Xsoftclock() at Xsoftclock+0x1f __mp_lock(ffffffff82b7e6f8) at __mp_lock+0x122 syscall(ffff8000211ec4b0) at syscall+0x3ef Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffc0ef0, count: 6 ddb{0}> trace x86_ipi_db(ffffffff82948ff0) at x86_ipi_db+0x1a x86_ipi_handler() at x86_ipi_handler+0xb7 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x23 __mp_lock(ffffffff82b7e6f8) at __mp_lock+0x129 softintr_dispatch(0) at softintr_dispatch+0x4e Xsoftclock() at Xsoftclock+0x1f __mp_lock(ffffffff82b7e6f8) at __mp_lock+0x122 syscall(ffff8000211ec4b0) at syscall+0x3ef Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffc0ef0, count: -9 ddb{0}> machine ddbcpu 1 Stopped at db_enter+0x18: addq $0x8,%rsp db_enter() at db_enter+0x18 panic(ffffffff825a0385) at panic+0x177 witness_checkorder(ffffffff82b7e900,9,0) at witness_checkorder+0x116d __mp_lock(ffffffff82b7e6f8) at __mp_lock+0xa1 selwakeup(fffffd806d3226d8) at selwakeup+0x16 sorwakeup(fffffd806d3225c0) at sorwakeup+0xc9 rip6_input(ffff800021203c88,ffff800021203c94,85,18) at rip6_input+0x692 ip_deliver(ffff800021203c88,ffff800021203c94,85,18) at ip_deliver+0x322 ip6_input_if(ffff800021203c88,ffff800021203c94,29,0,ffff80000019f2a8) at ip6_input_if+0x920 ipv6_input(ffff80000019f2a8,fffffd806d29a200) at ipv6_input+0x48 if_input_local(ffff80000019f2a8,fffffd806d29a200,18) at if_input_local+0x136 ip6_output(fffffd806d356a00,ffff800000bc6200,fffffd806f67b900,0,0,fffffd806f67b888) at ip6_output+0xf57 rip6_output(fffffd806d356a00,fffffd806d322200,ffff800021203ff0,0) at rip6_output+0x4ad rip6_usrreq(fffffd806d322200,9,fffffd806d356a00,0,0,ffff80002115fa40) at rip6_usrreq+0x5d3 end trace frame: 0xffff800021204170, count: 0 ddb{1}> trace db_enter() at db_enter+0x18 panic(ffffffff825a0385) at panic+0x177 witness_checkorder(ffffffff82b7e900,9,0) at witness_checkorder+0x116d __mp_lock(ffffffff82b7e6f8) at __mp_lock+0xa1 selwakeup(fffffd806d3226d8) at selwakeup+0x16 sorwakeup(fffffd806d3225c0) at sorwakeup+0xc9 rip6_input(ffff800021203c88,ffff800021203c94,85,18) at rip6_input+0x692 ip_deliver(ffff800021203c88,ffff800021203c94,85,18) at ip_deliver+0x322 ip6_input_if(ffff800021203c88,ffff800021203c94,29,0,ffff80000019f2a8) at ip6_input_if+0x920 ipv6_input(ffff80000019f2a8,fffffd806d29a200) at ipv6_input+0x48 if_input_local(ffff80000019f2a8,fffffd806d29a200,18) at if_input_local+0x136 ip6_output(fffffd806d356a00,ffff800000bc6200,fffffd806f67b900,0,0,fffffd806f67b888) at ip6_output+0xf57 rip6_output(fffffd806d356a00,fffffd806d322200,ffff800021203ff0,0) at rip6_output+0x4ad rip6_usrreq(fffffd806d322200,9,fffffd806d356a00,0,0,ffff80002115fa40) at rip6_usrreq+0x5d3 sosend(fffffd806d322200,0,ffff800021204228,0,0,0) at sosend+0x632 dofilewritev(ffff80002115fa40,4,ffff800021204228,0,ffff800021204320) at dofilewritev+0x19c sys_write(ffff80002115fa40,ffff8000212042c8,ffff800021204320) at sys_write+0x83 syscall(ffff800021204390) at syscall+0x489 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffc0ef0, count: -19 ddb{1}>