kern.securelevel: 0 -> 1 creating runtime link editor directory cache. preserving editor files. starting network daemons: sshd. starting local daemons:. Fri Feb 25 12:52:02 PST 2022 OpenBSD/amd64 (ci-openbsd-setuid-1.c.syzkaller.internal) (tty00) Warning: Permanently added '10.128.1.90' (ED25519) to the list of known hosts. login: uvm_fault(0xfffffd807effe450, 0x0, 0, 1) -> e kernel: page fault trap, code=0 Stopped at socreate+0x84: cmpq $0,0(%rax) TID PID UID PRFLAGS PFLAGS CPU COMMAND *155415 4769 0 0x2 0 0K syz-executor1267746353 socreate(18,ffff8000211bcb10,0,29) at socreate+0x84 sys_socketpair(ffff800021142d28,ffff8000211bcba8,ffff8000211bcc00) at sys_socketpair+0x6e syscall(ffff8000211bcc70) at syscall+0x489 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffc9210, count: 11 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{0}> ddb{0}> set $lines = 0 ddb{0}> set $maxwidth = 0 ddb{0}> show panic *cpu0: uvm_fault(0xfffffd807effe450, 0x0, 0, 1) -> e ddb{0}> trace socreate(18,ffff8000211bcb10,0,29) at socreate+0x84 sys_socketpair(ffff800021142d28,ffff8000211bcba8,ffff8000211bcc00) at sys_socketpair+0x6e syscall(ffff8000211bcc70) at syscall+0x489 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffc9210, count: -4 ddb{0}> show registers rdi 0 rsi 0 rbp 0xffff8000211bcaf0 rbx 0x18 rdx 0 rcx 0x29 rax 0 r8 0xa r9 0xa r10 0 r11 0x757e4211306db0ea r12 0xffff8000211bcb10 r13 0xffffffff8288cca0 inet6sw r14 0 r15 0x29 rip 0xffffffff81e82144 socreate+0x84 cs 0x8 rflags 0x10286 __ALIGN_SIZE+0xf286 rsp 0xffff8000211bca90 ss 0x10 socreate+0x84: cmpq $0,0(%rax) ddb{0}> show proc PROC (syz-executor1267746353) pid=155415 stat=onproc flags process=2 proc=0 pri=50, usrpri=50, nice=20 forw=0xffffffffffffffff, list=0xffff8000211427e8,0xffffffff82a987b8 process=0xffff8000ffff9d20 user=0xffff8000211b7000, vmspace=0xfffffd807effe450 estcpu=0, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND * 4769 155415 27687 0 7 0x2 syz-executor1267746353 27687 390165 75637 0 3 0x10008a sigsusp ksh 75637 175812 23173 0 3 0x9a kqread sshd 43495 392968 1 0 3 0x100083 ttyin getty 23173 227648 1 0 3 0x88 kqread sshd 10742 7741 9322 73 3 0x1100090 kqread syslogd 9322 347574 1 0 3 0x100082 netio syslogd 98216 231894 1 0 3 0x100080 kqread resolvd 81309 399716 17528 77 3 0x100092 kqread dhcpleased 51588 299295 17528 77 3 0x100092 kqread dhcpleased 17528 514380 1 0 3 0x80 kqread dhcpleased 1160 302454 0 0 3 0x14200 bored smr 40333 475793 0 0 3 0x14200 pgzero zerothread 63906 214146 0 0 3 0x14200 aiodoned aiodoned 77688 514522 0 0 3 0x14200 syncer update 20533 253946 0 0 3 0x14200 cleaner cleaner 70564 183443 0 0 3 0x14200 reaper reaper 943 267060 0 0 3 0x14200 pgdaemon pagedaemon 66319 316348 0 0 3 0x14200 bored viomb 52611 345489 0 0 3 0x40014200 acpi0 acpi0 44837 24569 0 0 7 0x40014200 idle1 37831 502978 0 0 3 0x14200 bored softnet 76673 450804 0 0 3 0x14200 bored systqmp 75077 194697 0 0 3 0x14200 bored systq 66649 223112 0 0 3 0x40014200 bored softclock 55114 485215 0 0 3 0x40014200 idle0 1 144512 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 4769 (syz-executor1267746353) thread 0xffff800021142d28 (155415) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff82abcc60) #0 witness_lock+0x44d #1 kpageflttrap+0x23d #2 kerntrap+0xef #3 alltraps_kern_meltdown+0x7b #4 socreate+0x84 #5 sys_socketpair+0x6e #6 syscall+0x489 #7 Xsyscall+0x128 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10143 6388K 6419K 78643K 11233 0 pcb 13 8K 8K 78643K 13 0 rtable 62 2K 2K 78643K 114 0 ifaddr 24 7K 7K 78643K 24 0 counters 40 33K 33K 78643K 40 0 ioctlops 0 0K 2K 78643K 25 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 4 0 vnodes 1166 73K 73K 78643K 1179 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 55 74K 75K 78643K 226 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 in_multi 11 0K 0K 78643K 11 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 25 122K 122K 78643K 25 0 exec 0 0K 2K 78643K 406 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 71 3K 5K 78643K 2034 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 3 0K 0K 78643K 3 0 temp 19 4686K 4749K 78643K 3152 0 kqueue 11 16K 18K 78643K 24 0 SYN cache 2 16K 16K 78643K 2 0 ddb{0}> 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 20 0 17 1 0 1 1 0 8 0 rtentry 112 23 0 1 1 0 1 1 0 8 0 unpcb 136 33 0 20 1 0 1 1 0 8 0 syncache 296 5 0 5 1 0 1 1 0 8 1 tcpcb 736 8 0 5 1 0 1 1 0 8 0 arp 120 2 0 0 1 0 1 1 0 8 0 inpcb 304 25 0 19 1 0 1 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 97 0 0 7 0 7 7 0 8 0 art_table 32 98 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 1415 0 38 87 0 87 87 0 8 0 ffsino 272 1415 0 38 92 0 92 92 0 8 0 nchpl 144 1590 0 47 58 0 58 58 0 8 0 uvmvnodes 80 1424 0 0 30 0 30 30 0 8 0 vnodes 224 1424 0 0 84 0 84 84 0 8 0 namei 1024 4181 0 4181 1 0 1 1 0 8 1 percpumem 16 32 0 0 1 0 1 1 0 8 0 scxspl 216 3740 0 3740 3 2 1 3 0 8 1 plimitpl 152 15 0 9 1 0 1 1 0 8 0 sigapl 424 301 0 274 4 0 4 4 0 8 0 knotepl 120 46 0 0 2 0 2 2 0 8 0 kqueuepl 216 20 0 13 1 0 1 1 0 8 0 pipepl 336 82 0 79 1 0 1 1 0 8 0 fdescpl 496 287 0 274 3 1 2 3 0 8 0 filepl 152 1028 0 975 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 17 0 9 1 0 1 1 0 8 0 pgrppl 48 17 0 9 1 0 1 1 0 8 0 ucredpl 96 64 0 54 1 0 1 1 0 8 0 zombiepl 144 274 0 274 1 0 1 1 0 8 1 processpl 1064 301 0 274 3 1 2 3 0 8 0 procpl 672 301 0 274 3 0 3 3 0 8 0 sockpl 480 78 0 56 3 0 3 3 0 8 0 mcl8k 8192 3 0 0 1 0 1 1 0 8 0 mcl4k 4096 4 0 0 1 0 1 1 0 8 0 mcl2k 2048 57 0 0 8 0 8 8 0 8 0 mtagpl 96 3 0 0 1 0 1 1 0 8 0 mbufpl 256 99 0 0 7 0 7 7 0 8 0 bufpl 288 1935 0 85 133 0 133 133 0 8 0 anonpl 24 39138 0 37094 14 0 14 14 0 186 1 amapchunkpl 152 3718 0 3593 7 1 6 7 0 158 0 amappl16 200 25 0 25 1 1 0 1 0 8 0 amappl15 192 64 0 60 1 0 1 1 0 8 0 amappl13 176 32 0 31 1 0 1 1 0 8 0 amappl12 168 20 0 20 1 0 1 1 0 8 1 amappl11 160 52 0 42 1 0 1 1 0 8 0 amappl10 152 2 0 2 1 1 0 1 0 8 0 amappl9 144 445 0 443 1 0 1 1 0 8 0 amappl8 136 351 0 348 1 0 1 1 0 8 0 amappl7 128 61 0 57 1 0 1 1 0 8 0 amappl6 120 109 0 96 1 0 1 1 0 8 0 amappl5 112 176 0 167 1 0 1 1 0 8 0 amappl4 104 594 0 575 1 0 1 1 0 8 0 amappl3 96 115 0 106 1 0 1 1 0 8 0 amappl2 88 355 0 319 1 0 1 1 0 8 0 amappl1 80 8287 0 7936 9 0 9 9 0 8 0 amappl 88 1773 0 1717 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 24 287 0 274 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 287 0 274 1 0 1 1 0 8 0 vmmpekpl 168 5942 0 5928 1 0 1 1 0 8 0 vmmpepl 168 25124 0 24366 38 0 38 38 0 357 3 vmsppl 368 286 0 274 2 0 2 2 0 8 0 rwobjpl 56 9080 0 7149 29 0 29 29 0 8 1 pdppl 4096 581 0 548 53 20 33 41 0 8 0 pvpl 32 126450 0 122666 34 0 34 34 0 265 2 pmappl 248 286 0 274 2 1 1 2 0 8 0 extentpl 40 58 0 38 1 0 1 1 0 8 0 phpool 112 401 0 22 11 0 11 11 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace socreate(18,ffff8000211bcb10,0,29) at socreate+0x84 sys_socketpair(ffff800021142d28,ffff8000211bcba8,ffff8000211bcc00) at sys_socketpair+0x6e syscall(ffff8000211bcc70) at syscall+0x489 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffc9210, count: -4 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp x86_ipi_db(ffff800020ce8ff0) at x86_ipi_db+0x1a x86_ipi_handler() at x86_ipi_handler+0xb7 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x23 acpicpu_idle() at acpicpu_idle+0x312 sched_idle(ffff800020ce8ff0) at sched_idle+0x417 end trace frame: 0x0, count: 10 ddb{1}> trace x86_ipi_db(ffff800020ce8ff0) at x86_ipi_db+0x1a x86_ipi_handler() at x86_ipi_handler+0xb7 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x23 acpicpu_idle() at acpicpu_idle+0x312 sched_idle(ffff800020ce8ff0) at sched_idle+0x417 end trace frame: 0x0, count: -5 ddb{1}>