kern.securelevel: 0 -> 1 creating runtime link editor directory cache. preserving editor files. starting network daemons: sshd. starting local daemons:. Fri Feb 25 17:37:15 PST 2022 OpenBSD/amd64 (ci-openbsd-setuid-1.c.syzkaller.internal) (tty00) Warning: Permanently added '10.128.1.93' (ED25519) to the list of known hosts. login: uvm_fault(0xfffffd807effe2e0, 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 *249537 77843 0 0x2 0 0K syz-executor1708738259 31402 49446 0 0x12 0 1 sshd socreate(18,ffff8000211bca00,0,29) at socreate+0x84 sys_socketpair(ffff800021142008,ffff8000211bca98,ffff8000211bcaf0) at sys_socketpair+0x6e syscall(ffff8000211bcb60) at syscall+0x489 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffe9660, 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(0xfffffd807effe2e0, 0x0, 0, 1) -> e ddb{0}> trace socreate(18,ffff8000211bca00,0,29) at socreate+0x84 sys_socketpair(ffff800021142008,ffff8000211bca98,ffff8000211bcaf0) at sys_socketpair+0x6e syscall(ffff8000211bcb60) at syscall+0x489 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffe9660, count: -4 ddb{0}> show registers rdi 0 rsi 0 rbp 0xffff8000211bc9e0 rbx 0x18 rdx 0 rcx 0x29 rax 0 r8 0xffffffff81e690f0 uvm_map_inentry_pc r9 0xb r10 0 r11 0xecfa1e5f85956e4c r12 0xffff8000211bca00 r13 0xffffffff8288cca0 inet6sw r14 0 r15 0x29 rip 0xffffffff81e82144 socreate+0x84 cs 0x8 rflags 0x10286 __ALIGN_SIZE+0xf286 rsp 0xffff8000211bc980 ss 0x10 socreate+0x84: cmpq $0,0(%rax) ddb{0}> show proc PROC (syz-executor1708738259) pid=249537 stat=onproc flags process=2 proc=0 pri=54, usrpri=54, nice=20 forw=0xffffffffffffffff, list=0xffff800021143508,0xffffffff82a987b8 process=0xffff8000ffff94d0 user=0xffff8000211b7000, vmspace=0xfffffd807effe2e0 estcpu=4, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND *77843 249537 24123 0 7 0x2 syz-executor1708738259 24123 327168 49446 0 3 0x10008a sigsusp ksh 49446 31402 21722 0 7 0x12 sshd 63662 320095 1 0 3 0x100083 ttyin getty 21722 132360 1 0 3 0x88 kqread sshd 45186 287603 69034 73 3 0x1100090 kqread syslogd 69034 91235 1 0 3 0x100082 netio syslogd 16263 313810 1 0 3 0x100080 kqread resolvd 98527 304982 15239 77 3 0x100092 kqread dhcpleased 75049 385042 15239 77 3 0x100092 kqread dhcpleased 15239 176936 1 0 3 0x80 kqread dhcpleased 22095 461963 0 0 3 0x14200 bored smr 29475 246696 0 0 3 0x14200 pgzero zerothread 38206 442544 0 0 3 0x14200 aiodoned aiodoned 25751 409355 0 0 3 0x14200 syncer update 10739 190652 0 0 3 0x14200 cleaner cleaner 45584 462441 0 0 3 0x14200 reaper reaper 88195 119578 0 0 3 0x14200 pgdaemon pagedaemon 36833 175338 0 0 3 0x14200 bored viomb 52253 328418 0 0 3 0x40014200 acpi0 acpi0 55846 136750 0 0 3 0x40014200 idle1 12808 444207 0 0 3 0x14200 bored softnet 73859 159585 0 0 3 0x14200 bored systqmp 3167 373431 0 0 3 0x14200 bored systq 29993 285236 0 0 3 0x40014200 bored softclock 98831 355067 0 0 3 0x40014200 idle0 1 96140 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 77843 (syz-executor1708738259) thread 0xffff800021142008 (249537) 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 Process 49446 (sshd) thread 0xffff800021142a88 (31402) shared rwlock vmmaplk r = 0 (0xfffffd807effed08) #0 witness_lock+0x44d #1 uvmfault_lookup+0xd9 #2 uvm_fault_check+0x3a #3 uvm_fault+0x102 #4 upageflttrap+0x82 #5 usertrap+0x1aa #6 recall_trap+0x8 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10144 6388K 6419K 78643K 11234 0 pcb 13 8K 8K 78643K 13 0 rtable 62 2K 2K 78643K 108 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 5 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 2 2K 3K 78643K 4 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 31 148K 148K 78643K 31 0 exec 0 0K 2K 78643K 391 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 72 3K 5K 78643K 1983 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 3074 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 17 0 14 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 2 1 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 4135 0 4135 2 1 1 1 0 8 1 percpumem 16 32 0 0 1 0 1 1 0 8 0 scxspl 216 3733 0 3733 2 1 1 2 0 8 1 plimitpl 152 15 0 9 1 0 1 1 0 8 0 sigapl 424 292 0 265 4 0 4 4 0 8 0 knotepl 120 44 0 0 2 0 2 2 0 8 0 kqueuepl 216 20 0 13 1 0 1 1 0 8 0 pipepl 336 79 0 76 2 1 1 1 0 8 0 fdescpl 496 278 0 265 3 1 2 3 0 8 0 filepl 152 1013 0 958 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 67 0 57 1 0 1 1 0 8 0 zombiepl 144 265 0 265 2 1 1 1 0 8 1 processpl 1064 292 0 265 3 1 2 3 0 8 0 procpl 672 292 0 265 3 0 3 3 0 8 0 sockpl 480 75 0 53 3 0 3 3 0 8 0 mcl8k 8192 2 0 0 1 0 1 1 0 8 0 mcl4k 4096 2 0 0 1 0 1 1 0 8 0 mcl2k 2048 62 0 0 8 0 8 8 0 8 0 mtagpl 96 2 0 0 1 0 1 1 0 8 0 mbufpl 256 106 0 0 7 0 7 7 0 8 0 bufpl 288 1937 0 86 133 0 133 133 0 8 0 anonpl 24 38131 0 36089 17 3 14 15 0 186 1 amapchunkpl 152 3626 0 3500 7 1 6 7 0 158 0 amappl16 200 25 0 25 1 1 0 1 0 8 0 amappl15 192 59 0 56 1 0 1 1 0 8 0 amappl13 176 32 0 31 2 1 1 1 0 8 0 amappl12 168 11 0 11 2 1 1 1 0 8 1 amappl11 160 42 0 32 1 0 1 1 0 8 0 amappl10 152 8 0 7 1 0 1 1 0 8 0 amappl9 144 445 0 443 1 0 1 1 0 8 0 amappl8 136 344 0 341 1 0 1 1 0 8 0 amappl7 128 61 0 58 1 0 1 1 0 8 0 amappl6 120 106 0 93 1 0 1 1 0 8 0 amappl5 112 172 0 163 1 0 1 1 0 8 0 amappl4 104 576 0 557 1 0 1 1 0 8 0 amappl3 96 112 0 103 1 0 1 1 0 8 0 amappl2 88 337 0 301 1 0 1 1 0 8 0 amappl1 80 8223 0 7870 12 3 9 9 0 8 1 amappl 88 1731 0 1674 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 24 278 0 265 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 278 0 265 1 0 1 1 0 8 0 vmmpekpl 168 5876 0 5863 1 0 1 1 0 8 0 vmmpepl 168 24583 0 23824 40 2 38 38 0 357 1 vmsppl 368 277 0 265 2 0 2 2 0 8 0 rwobjpl 56 9039 0 7106 30 1 29 29 0 8 1 pdppl 4096 563 0 530 47 14 33 41 0 8 0 pvpl 32 123786 0 120000 36 2 34 34 0 265 2 pmappl 248 277 0 265 2 1 1 2 0 8 0 extentpl 40 58 0 38 1 0 1 1 0 8 0 phpool 112 397 0 18 11 0 11 11 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace socreate(18,ffff8000211bca00,0,29) at socreate+0x84 sys_socketpair(ffff800021142008,ffff8000211bca98,ffff8000211bcaf0) at sys_socketpair+0x6e syscall(ffff8000211bcb60) at syscall+0x489 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffe9660, 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 __mp_lock(ffffffff82abca58) at __mp_lock+0x122 syscall(ffff8000211628b0) at syscall+0x3ef Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffd6eb0, count: 9 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 __mp_lock(ffffffff82abca58) at __mp_lock+0x122 syscall(ffff8000211628b0) at syscall+0x3ef Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffd6eb0, count: -6 ddb{1}>