uvm_fault(0xffffffff83a0fac8, 0xffff800000002008, 0, 1) -> e kernel: page fault trap, code=0 Stopped at ip6_freemoptions+0x65: movq 0x8(%r15),%r13 TID PID UID PRFLAGS PFLAGS CPU COMMAND ip6_freemoptions(ffff80000002e450) at ip6_freemoptions+0x65 sys/netinet6/ip6_output.c:2147 in_pcbdetach(fffffa006d9ca900) at in_pcbdetach+0x122 sys/netinet/in_pcb.c:608 udp_detach(ffff8000016399f8) at udp_detach+0x5a sys/netinet/udp_usrreq.c:1158 soclose(ffff8000016399f8,0) at soclose+0xad pru_detach sys/sys/protosw.h:281 [inline] soclose(ffff8000016399f8,0) at soclose+0xad sys/kern/uipc_socket.c:403 soo_close(fffffa006d6a7448,ffff80003c8fb248) at soo_close+0x56 sys/kern/sys_socket.c:-1 fdrop(fffffa006d6a7448,ffff80003c8fb248) at fdrop+0x121 sys/kern/kern_descrip.c:1281 closef(fffffa006d6a7448,ffff80003c8fb248) at closef+0x190 sys/kern/kern_descrip.c:1265 fdfree(ffff80003c8fb248) at fdfree+0x115 sys/kern/kern_descrip.c:1196 exit1(ffff80003c8fb248,0,0,1) at exit1+0x595 sys/kern/kern_exit.c:215 sys_exit(ffff80003c8fb248,ffff8000380e1ae0,ffff8000380e1a30) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff8000380e1ae0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff8000380e1ae0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x735e280a18c0, count: 3 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> ddb> set $lines = 0 ddb> set $maxwidth = 0 ddb> show panic *cpu0: uvm_fault(0xffffffff83a0fac8, 0xffff800000002008, 0, 1) -> e ddb> show kasan No such command ddb> trace ip6_freemoptions(ffff80000002e450) at ip6_freemoptions+0x65 sys/netinet6/ip6_output.c:2147 in_pcbdetach(fffffa006d9ca900) at in_pcbdetach+0x122 sys/netinet/in_pcb.c:608 udp_detach(ffff8000016399f8) at udp_detach+0x5a sys/netinet/udp_usrreq.c:1158 soclose(ffff8000016399f8,0) at soclose+0xad pru_detach sys/sys/protosw.h:281 [inline] soclose(ffff8000016399f8,0) at soclose+0xad sys/kern/uipc_socket.c:403 soo_close(fffffa006d6a7448,ffff80003c8fb248) at soo_close+0x56 sys/kern/sys_socket.c:-1 fdrop(fffffa006d6a7448,ffff80003c8fb248) at fdrop+0x121 sys/kern/kern_descrip.c:1281 closef(fffffa006d6a7448,ffff80003c8fb248) at closef+0x190 sys/kern/kern_descrip.c:1265 fdfree(ffff80003c8fb248) at fdfree+0x115 sys/kern/kern_descrip.c:1196 exit1(ffff80003c8fb248,0,0,1) at exit1+0x595 sys/kern/kern_exit.c:215 sys_exit(ffff80003c8fb248,ffff8000380e1ae0,ffff8000380e1a30) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff8000380e1ae0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff8000380e1ae0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x735e280a18c0, count: -12 ddb> show registers rdi 0xffff80000002e450 rsi 0x100 rbp 0xffff8000380e1750 rbx 0x5 rdx 0 rcx 0x1 rax 0xffff80003c8fb248 r8 0 r9 0 r10 0x698a784befa9888 r11 0xfc7950a40498fbe r12 0 r13 0x100 r14 0xffff80000002e450 r15 0xffff800000002000 rip 0xffffffff81d00425 ip6_freemoptions+0x65 cs 0x8 rflags 0x10286 __ALIGN_SIZE+0xf286 rsp 0xffff8000380e1710 ss 0x10 ip6_freemoptions+0x65: movq 0x8(%r15),%r13 ddb> show proc PROC (syz-executor) tid=37042 pid=39867 tcnt=0 stat=onproc flags process=1008 proc=2000 runpri=32, usrpri=57, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0xffff80003c8fb248 scnt=-1 ecnt=1 forw=0xffffffffffffffff, list=0xffff80002a77c2b0,0xffffffff83aa5308 process=0xffff800045ff8d98 user=0xffff8000380dc000, vmspace=0xfffffa006d0c25d8 estcpu=7, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S PRLAGS PFLAGS WAIT COMMAND 83124 255841 40590 0 3 0 0x80 fsleep syz-executor 83124 483015 40590 0 3 0 0x4000080 ttyin syz-executor 55638 15389 35210 60929 3 0x10 0x80 fsleep syz-executor 55638 320847 35210 60929 3 0x10 0x4000080 lockf syz-executor 19994 8903 63200 0 3 0 0x80 fsleep syz-executor 19994 355377 63200 0 3 0 0x4000080 lockf syz-executor 45245 177269 71433 0 3 0 0x80 fsleep syz-executor 45245 492251 71433 0 3 0 0x4000080 sbwait syz-executor 45245 181348 71433 0 3 0 0x4000080 fsleep syz-executor 763 413843 13767 0 3 0 0x80 fsleep syz-executor 763 81950 13767 0 3 0 0x4000080 kqread syz-executor 36115 380065 17878 0 3 0 0x80 fsleep syz-executor 36115 56253 17878 0 2 0 0x4000000 syz-executor 99905 191596 90797 0 3 0x2 0x80 nanoslp syz-executor 5664 487899 90797 0 2 0x2 0 syz-executor 17878 292104 90797 0 3 0x2 0x80 nanoslp syz-executor 13767 462567 90797 0 3 0x2 0x80 nanoslp syz-executor 71433 210468 90797 0 3 0x2 0x80 nanoslp syz-executor 35210 384987 90797 0 3 0x2 0x80 nanoslp syz-executor 63200 166784 90797 0 3 0x2 0x80 nanoslp syz-executor 40590 450779 90797 0 3 0x2 0x80 nanoslp syz-executor 90797 523579 26265 0 3 0x2 0x80 kqread syz-executor 26265 113625 63229 0 3 0x100002 0x88 sigsusp ksh 63229 260190 23968 0 3 0x10 0x88 kqread sshd-session 23968 441509 71996 0 3 0x12 0x80 kqread sshd-session 29887 385984 1 0 3 0x100003 0x80 ttyin getty 71996 221143 1 0 3 0 0x88 kqread sshd 12386 209411 80861 73 3 0x1100010 0x80 kqread syslogd 80861 301756 1 0 3 0x100002 0x80 sbwait syslogd 38090 424344 1 0 3 0x100000 0x80 kqread resolvd 65873 321981 68299 77 3 0x100012 0x80 kqread dhcpleased 13571 289896 68299 77 3 0x100012 0x80 kqread dhcpleased 68299 511817 1 0 3 0 0x80 kqread dhcpleased 80435 107798 0 0 3 0x14000 0x200 bored smr 95761 402879 0 0 2 0x14000 0x200 zerothread 56772 429254 0 0 3 0x14000 0x200 aiodoned aiodoned 86553 64497 0 0 3 0x14000 0x200 syncer update 41261 137343 0 0 3 0x14000 0x200 cleaner cleaner 389 396647 0 0 3 0x14000 0x200 reaper reaper 62167 457820 0 0 3 0x14000 0x200 pgdaemon pagedaemon 48729 355238 0 0 3 0x14000 0x200 bored viomb 22681 228077 0 0 3 0x14000 0x40000200 acpi0 acpi0 54892 291310 0 0 3 0x14000 0x200 bored softnet0 27902 511380 0 0 3 0x14000 0x200 bored systqmp 95649 331402 0 0 3 0x14000 0x200 bored systq 98520 236248 0 0 3 0x14000 0x40000200 tmoslp softclock 26701 430473 0 0 3 0x14000 0x40000200 idle0 1 353118 0 0 3 0x2 0x80 wait init 0 0 -1 0 3 0x10000 0x200 scheduler swapper ddb> show all locks No such command ddb> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 11043 12169K 12394K 166960K 12394 0 pcb 20 12K 12K 166960K 38 0 rtable 253 8K 8K 166960K 387 0 pf 33 13K 19K 166960K 53 0 ifaddr 44 7K 7K 166960K 46 0 ifgroup 55 2K 2K 166960K 55 0 sysctl 2 1K 9K 166960K 6 0 counters 35 18K 18K 166960K 36 0 ioctlops 0 0K 4K 166960K 49 0 iov 0 0K 12K 166960K 4 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1294 81K 82K 166960K 1510 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 5K 166960K 3 0 VM map 2 1K 1K 166960K 2 0 sem 9 0K 0K 166960K 11 0 dirhash 12 2K 2K 166960K 18 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 17 61K 97K 166960K 237 0 proc 59 59K 100K 166960K 515 0 subproc 72 4K 4K 166960K 72 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 1 0K 0K 166960K 8 0 in_multi 102 6K 6K 166960K 104 0 ether_multi 1 0K 0K 166960K 1 0 mrt 0 0K 0K 166960K 11 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 73 334K 334K 166960K 73 0 exec 0 0K 1K 166960K 373 0 fusefs mount 1 32K 32K 166960K 1 0 pfkey data 0 0K 0K 166960K 1 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 224 159K 173K 166960K 3846 0 UVM aobj 4 2K 3K 166960K 5 0 pinsyscall 38 76K 96K 166960K 1347 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 6 0 NDP 12 0K 2K 166960K 28 0 temp 35 9110K 9126K 166960K 4882 0 kqueue 15 24K 28K 166960K 45 0 SYN cache 2 16K 16K 166960K 2 0 ddb> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle rtpcb 120 43 0 39 1 0 1 1 0 8 0 rtentry 136 116 0 2 4 0 4 4 0 8 0 unpcb 144 78 0 63 2 0 2 2 0 8 1 syncache 336 8 0 8 1 0 1 1 0 8 1 tcpqe 32 1 0 1 1 0 1 1 0 8 1 tcpcb 736 41 0 37 1 0 1 1 0 8 0 arp 96 21 0 0 1 0 1 1 0 8 0 ipq 40 2 0 0 1 0 1 1 0 8 0 ipqe 40 66 0 64 1 0 1 1 0 8 0 inpcb 328 124 0 113 2 0 2 2 0 8 0 nd6 112 24 0 0 1 0 1 1 0 8 0 pkpcb 40 2 0 2 1 0 1 1 0 8 1 kcovpl 48 8 0 0 1 0 1 1 0 8 0 ppxss 1072 2 0 1 1 0 1 1 0 8 0 pppxif 1416 2 0 1 1 0 1 1 0 8 0 pfrule 1360 2 0 2 1 0 1 1 0 8 1 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 464 0 0 29 0 29 29 0 8 0 art_table 40 466 0 0 5 0 5 5 0 8 0 art_node 32 115 0 12 1 0 1 1 0 8 0 semupl 112 1 0 1 1 0 1 1 0 8 1 semapl 72 9 0 2 1 0 1 1 0 8 0 shmpl 112 2 0 1 1 0 1 1 0 8 0 dirhash 1024 21 0 4 3 0 3 3 0 8 0 dino2pl 256 1821 0 364 92 0 92 92 0 8 0 ffsino 256 1821 0 364 92 0 92 92 0 8 0 nchpl 144 2150 0 457 63 0 63 63 0 8 0 vnodes 216 1955 0 0 109 0 109 109 0 8 0 namei 1024 6568 0 6567 2 0 2 2 0 8 1 kstatmem 264 25 0 0 2 0 2 2 0 8 0 scxspl 216 7124 0 7124 4 0 4 4 1 8 4 plimitpl 152 109 0 91 1 0 1 1 0 8 0 sigapl 424 535 0 493 6 0 6 6 0 8 1 knotepl 120 13678 0 13596 9 0 9 9 0 8 6 kqueuepl 184 51 0 36 1 0 1 1 0 8 0 pipepl 304 132 0 105 3 0 3 3 0 8 0 fdescpl 448 522 0 493 5 0 5 5 0 8 1 filepl 120 2207 0 1979 9 0 9 9 0 8 2 lockfpl 104 58 0 51 1 0 1 1 0 8 0 lockfspl 48 26 0 21 1 0 1 1 0 8 0 sessionpl 144 29 0 21 1 0 1 1 0 8 0 pgrppl 48 38 0 22 1 0 1 1 0 8 0 ucredpl 104 394 0 382 1 0 1 1 0 8 0 zombiepl 144 494 0 493 1 0 1 1 0 8 0 processpl 1152 535 0 493 4 0 4 4 0 8 0 procpl 664 701 0 652 5 0 5 5 0 8 0 sockpl 552 252 0 220 4 0 4 4 0 8 1 mcl64k 65536 4 0 3 1 0 1 1 0 8 0 mcl16k 16384 2 0 2 1 0 1 1 0 8 1 mcl8k 8192 7 0 7 1 0 1 1 0 8 1 mcl4k 4096 2642 0 2592 14 0 14 14 0 8 7 mcl2k 2048 209 0 209 2 0 2 2 0 8 2 mextrefs 64 81 0 81 1 0 1 1 0 8 1 mtagpl 96 5 0 5 1 0 1 1 0 8 1 mbufpl 256 5487 0 5309 13 0 13 13 0 8 1 bufpl 272 2494 0 102 160 0 160 160 0 8 0 anonpl 24 93922 0 90778 44 0 44 44 0 187 21 amapchunkpl 152 11200 0 10710 27 0 27 27 0 158 6 amappl16 200 1526 0 1500 14 1 13 14 0 8 11 amappl15 192 7 0 7 1 0 1 1 0 8 1 amappl14 184 413 0 412 1 0 1 1 0 8 0 amappl13 176 117 0 107 1 0 1 1 0 8 0 amappl12 168 759 0 731 2 0 2 2 0 8 0 amappl11 160 4 0 4 1 0 1 1 0 8 1 amappl10 152 106 0 96 1 0 1 1 0 8 0 amappl9 144 276 0 276 1 0 1 1 0 8 1 amappl8 136 106 0 105 1 0 1 1 0 8 0 amappl7 128 143 0 132 1 0 1 1 0 8 0 amappl6 120 153 0 151 1 0 1 1 0 8 0 amappl5 112 110 0 102 1 0 1 1 0 8 0 amappl4 104 275 0 259 1 0 1 1 0 8 0 amappl3 96 1942 0 1845 3 0 3 3 0 8 0 amappl2 88 643 0 574 2 0 2 2 0 8 0 amappl1 80 10532 0 9986 13 0 13 13 0 8 1 amappl 88 3135 0 2974 4 0 4 4 0 92 0 uvmvnodes 80 97 0 0 2 0 2 2 0 8 0 dma4096 4096 1 0 1 1 0 1 1 0 8 1 dma1024 1024 1 0 0 1 0 1 1 0 8 0 dma256 256 6 0 6 1 0 1 1 0 8 1 dma128 128 253 0 253 1 0 1 1 0 8 1 dma64 64 6 0 6 1 0 1 1 0 8 1 dma32 32 7 0 7 1 0 1 1 0 8 1 dma16 16 18 0 17 1 0 1 1 0 8 0 aobjpl 72 4 0 1 1 0 1 1 0 8 0 uaddrrnd 24 522 0 493 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 522 0 493 1 0 1 1 0 8 0 vmmpekpl 168 6056 0 6024 2 0 2 2 0 8 0 vmmpepl 168 42221 0 40451 88 0 88 88 0 357 8 vmsppl 368 521 0 493 4 0 4 4 0 8 1 rwobjpl 40 14922 0 13979 12 0 12 12 0 8 2 pdppl 4096 1050 0 986 96 30 66 82 0 8 2 pvpl 32 240038 0 231417 117 0 117 117 0 265 36 pmappl 216 521 0 493 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 523 0 30 15 0 15 15 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace ip6_freemoptions(ffff80000002e450) at ip6_freemoptions+0x65 sys/netinet6/ip6_output.c:2147 in_pcbdetach(fffffa006d9ca900) at in_pcbdetach+0x122 sys/netinet/in_pcb.c:608 udp_detach(ffff8000016399f8) at udp_detach+0x5a sys/netinet/udp_usrreq.c:1158 soclose(ffff8000016399f8,0) at soclose+0xad pru_detach sys/sys/protosw.h:281 [inline] soclose(ffff8000016399f8,0) at soclose+0xad sys/kern/uipc_socket.c:403 soo_close(fffffa006d6a7448,ffff80003c8fb248) at soo_close+0x56 sys/kern/sys_socket.c:-1 fdrop(fffffa006d6a7448,ffff80003c8fb248) at fdrop+0x121 sys/kern/kern_descrip.c:1281 closef(fffffa006d6a7448,ffff80003c8fb248) at closef+0x190 sys/kern/kern_descrip.c:1265 fdfree(ffff80003c8fb248) at fdfree+0x115 sys/kern/kern_descrip.c:1196 exit1(ffff80003c8fb248,0,0,1) at exit1+0x595 sys/kern/kern_exit.c:215 sys_exit(ffff80003c8fb248,ffff8000380e1ae0,ffff8000380e1a30) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff8000380e1ae0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff8000380e1ae0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x735e280a18c0, count: -12 ddb> machine ddbcpu 1 No such command ddb> trace ip6_freemoptions(ffff80000002e450) at ip6_freemoptions+0x65 sys/netinet6/ip6_output.c:2147 in_pcbdetach(fffffa006d9ca900) at in_pcbdetach+0x122 sys/netinet/in_pcb.c:608 udp_detach(ffff8000016399f8) at udp_detach+0x5a sys/netinet/udp_usrreq.c:1158 soclose(ffff8000016399f8,0) at soclose+0xad pru_detach sys/sys/protosw.h:281 [inline] soclose(ffff8000016399f8,0) at soclose+0xad sys/kern/uipc_socket.c:403 soo_close(fffffa006d6a7448,ffff80003c8fb248) at soo_close+0x56 sys/kern/sys_socket.c:-1 fdrop(fffffa006d6a7448,ffff80003c8fb248) at fdrop+0x121 sys/kern/kern_descrip.c:1281 closef(fffffa006d6a7448,ffff80003c8fb248) at closef+0x190 sys/kern/kern_descrip.c:1265 fdfree(ffff80003c8fb248) at fdfree+0x115 sys/kern/kern_descrip.c:1196 exit1(ffff80003c8fb248,0,0,1) at exit1+0x595 sys/kern/kern_exit.c:215 sys_exit(ffff80003c8fb248,ffff8000380e1ae0,ffff8000380e1a30) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff8000380e1ae0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff8000380e1ae0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x735e280a18c0, count: -12