login: uvm_fault(0xffffffff82e3e390, 0x17, 0, 2) -> e kernel: page fault trap, code=2 Stopped at rt_timer_timer+0x4f: movq %rax,0x18(%r15) TID PID UID PRFLAGS PFLAGS CPU COMMAND *388781 80422 0 0x14000 0x40000200 0 softclock rt_timer_timer(fffffd80717f7e58) at rt_timer_timer+0x4f sys/net/route.c:1657 timeout_run(fffffd80717f7e78) at timeout_run+0x8f sys/kern/kern_timeout.c:666 softclock_thread(ffff80002a57d7e8) at softclock_thread+0xc4 sys/kern/kern_timeout.c:814 end trace frame: 0x0, count: 12 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> show registers rdi 0x1 rsi 0x9 rbp 0xffff80002a589b90 rbx 0 rdx 0 rcx 0xffffffff82e3f080 timeout_proc rax 0xffffffffffffffff r8 0 r9 0 r10 0 r11 0xb6d0f5b1546872f8 r12 0xffffffff82dbbd08 ip_mtudisc_timeout_q r13 0xffffffff82c69ff0 cpu_info_full_primary+0x1ff0 r14 0xfffffd80717f7e58 r15 0xffffffffffffffff rip 0xffffffff81803a4f rt_timer_timer+0x4f cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80002a589b60 ss 0x10 rt_timer_timer+0x4f: movq %rax,0x18(%r15) ddb> show proc PROC (softclock) tid=388781 pid=80422 tcnt=1 stat=onproc flags process=14000 proc=40000200 runpri=0, usrpri=50, slppri=0, nice=20 wchan=0x0, wmesg=, ps_single=0x0 forw=0xffffffffffffffff, list=0xffff80002a57da90,0xffff80002a57d550 process=0xffff8000ffffe9e0 user=0xffff80002a584000, vmspace=0xffffffff82e3e390 estcpu=0, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 78917 122008 1 0 3 0x80 fsleep syz-executor.3 78917 373663 1 0 3 0x4000080 netio syz-executor.3 78917 129650 1 0 3 0x4000000 inode syz-executor.3 7258 79337 55951 0 3 0x82 piperd syz-executor.6 33111 458059 55951 0 3 0x82 piperd syz-executor.7 87681 477621 55951 0 3 0x82 piperd syz-executor.4 22790 498644 55951 0 3 0x82 piperd syz-executor.2 38898 464873 55951 0 3 0x82 piperd syz-executor.1 44471 405685 55951 0 3 0x82 piperd syz-executor.5 24570 248630 55951 0 3 0x82 piperd syz-executor.0 76712 290810 0 0 3 0x14280 nfsidl nfsio 25141 436695 0 0 3 0x14280 nfsidl nfsio 12852 438487 0 0 3 0x14280 nfsidl nfsio 88680 32985 0 0 3 0x14280 nfsidl nfsio 98840 232940 0 0 3 0x14280 nfsidl nfsio 5642 229201 0 0 3 0x14280 nfsidl nfsio 91879 177670 0 0 3 0x14280 nfsidl nfsio 63727 123111 0 0 3 0x14280 nfsidl nfsio 99153 75479 0 0 3 0x14280 nfsidl nfsio 48212 100146 0 0 3 0x14280 nfsidl nfsio 94384 195927 0 0 3 0x14280 nfsidl nfsio 83700 221523 0 0 3 0x14280 nfsidl nfsio 71095 518511 0 0 3 0x14280 nfsidl nfsio 24716 257766 0 0 3 0x14280 nfsidl nfsio 51926 96204 0 0 3 0x14280 nfsidl nfsio 91311 444068 0 0 3 0x14280 nfsidl nfsio 65350 88552 0 0 3 0x14280 nfsidl nfsio 82302 243981 0 0 3 0x14280 nfsidl nfsio 74475 22812 0 0 3 0x14280 nfsidl nfsio 13006 763 0 0 3 0x14280 nfsidl nfsio 34983 385172 0 0 3 0x14200 acct acct 13346 390211 1 0 3 0x83 ttyin login 9460 76961 0 0 3 0x14200 bored sosplice 55951 228736 59346 0 3 0x2000082 wait syz-fuzzer 55951 415132 59346 0 3 0x6000082 thrsleep syz-fuzzer 55951 189297 59346 0 3 0x6000002 inode syz-fuzzer 55951 211200 59346 0 3 0x6000082 thrsleep syz-fuzzer 55951 288697 59346 0 3 0x6000082 wait syz-fuzzer 55951 298428 59346 0 3 0x6000082 wait syz-fuzzer 55951 127587 59346 0 3 0x6000082 thrsleep syz-fuzzer 55951 83884 59346 0 3 0x6000082 thrsleep syz-fuzzer 55951 410708 59346 0 3 0x6000082 kqread syz-fuzzer 55951 367412 59346 0 3 0x6000082 thrsleep syz-fuzzer 55951 388327 59346 0 3 0x6000082 wait syz-fuzzer 55951 75170 59346 0 3 0x6000082 wait syz-fuzzer 55951 244169 59346 0 3 0x6000082 wait syz-fuzzer 55951 24168 59346 0 3 0x6000082 wait syz-fuzzer 59346 187482 15273 0 3 0x10008a sigsusp ksh 15273 280720 43290 0 3 0x9a kqread sshd 43290 113416 1 0 3 0x88 kqread sshd 94668 421107 93994 73 3 0x1100090 kqread syslogd 93994 74786 1 0 3 0x100082 netio syslogd 26951 172109 1 0 3 0x100080 kqread resolvd 10237 341305 71937 77 3 0x100092 kqread dhcpleased 240 339879 71937 77 3 0x100092 kqread dhcpleased 71937 58658 1 0 3 0x80 kqread dhcpleased 56845 464254 0 0 3 0x14200 bored smr 40823 325460 0 0 3 0x14200 pgzero zerothread 73863 328086 0 0 3 0x14200 aiodoned aiodoned 58321 390002 0 0 3 0x14200 syncer update 77682 70482 0 0 3 0x14200 cleaner cleaner 92546 177687 0 0 3 0x14200 reaper reaper 74810 97582 0 0 3 0x14200 pgdaemon pagedaemon 65029 337770 0 0 3 0x14200 bored viomb 17266 155388 0 0 3 0x40014200 acpi0 acpi0 85272 292080 0 0 3 0x14200 bored softnet3 74964 241816 0 0 3 0x14200 bored softnet2 7385 230385 0 0 3 0x14200 bored softnet1 64056 512798 0 0 3 0x14200 bored softnet0 94117 337268 0 0 3 0x14200 bored systqmp 37942 409520 0 0 3 0x14200 bored systq *80422 388781 0 0 7 0x40014200 softclock 79841 82037 0 0 3 0x40014200 idle0 1 259765 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb> show all locks No such command ddb> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10177 6407K 14598K 166960K 23759 0 pcb 15 20K 25K 166960K 776 0 rtable 232 15K 15K 166960K 2468 0 pf 31 9K 9K 166960K 264 0 ifaddr 43 12K 12K 166960K 301 0 ifgroup 54 2K 2K 166960K 437 0 sysctl 3 0K 1K 166960K 8 0 counters 31 17K 17K 166960K 134 0 ioctlops 0 0K 2K 166960K 386 0 iov 0 0K 32K 166960K 846 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1498 94K 94K 166960K 5350 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 9K 166960K 103 0 VM map 2 1K 1K 166960K 2 0 sem 12 1K 1K 166960K 423 0 dirhash 12 2K 2K 166960K 36 0 ACPI 1697 195K 286K 166960K 12548 0 file desc 10 33K 77K 166960K 9552 0 sigio 0 0K 0K 166960K 127 0 proc 51 50K 92K 166960K 2035 0 subproc 104 6K 8K 166960K 802 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 534 0 in_multi 95 7K 7K 166960K 690 0 ether_multi 1 0K 0K 166960K 4 0 mrt 1 0K 0K 166960K 6 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 79 360K 360K 166960K 79 0 exec 0 0K 1K 166960K 1663 0 pfkey data 0 0K 0K 166960K 6 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 379 299K 301K 166960K 87461 0 UVM aobj 131 4K 4K 166960K 131 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 1K 166960K 387 0 NDP 12 0K 2K 166960K 229 0 temp 75 6764K 7060K 166960K 76199 0 kqueue 12 18K 26K 166960K 533 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 120 471 0 468 3 0 3 3 0 8 2 rtentry 112 725 0 619 4 0 4 4 0 8 0 unpcb 144 6244 0 6229 10 1 9 10 0 8 8 syncache 336 99 0 99 1 0 1 1 0 8 1 sackhl 24 1 0 1 1 0 1 1 0 8 1 tcpqe 32 375 0 375 1 0 1 1 0 8 1 tcpcb 808 2694 0 2686 16 6 10 13 0 8 8 arp 88 130 0 112 1 0 1 1 0 8 0 ipq 40 9 0 9 1 0 1 1 0 8 1 ipqe 40 143 0 143 1 0 1 1 0 8 1 inpcb 360 6612 0 6600 22 12 10 16 0 8 8 nd6 104 171 0 149 1 0 1 1 0 8 0 pkpcb 40 79 0 79 1 0 1 1 0 8 1 kcovpl 48 56 0 48 1 0 1 1 0 8 0 ppxss 1072 28 0 28 1 0 1 1 0 8 1 rttmr 136 1 0 1 1 0 1 1 0 8 1 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 2759 0 2317 60 30 30 30 0 8 2 art_table 32 2760 0 2317 4 0 4 4 0 8 0 art_node 16 705 0 609 1 0 1 1 0 8 0 sysvmsgpl 40 74 0 68 1 0 1 1 0 8 0 semupl 112 2 0 2 1 0 1 1 0 8 1 semapl 112 418 0 408 1 0 1 1 0 8 0 shmpl 112 128 0 0 4 0 4 4 0 8 0 dirhash 1024 33 0 16 3 0 3 3 0 8 0 dino2pl 256 13119 0 11637 93 0 93 93 0 8 0 ffsino 240 13119 0 11637 88 0 88 88 0 8 0 nchpl 144 25293 0 23659 63 0 63 63 0 8 0 uvmvnodes 80 5926 0 0 121 0 121 121 0 8 0 vnodes 216 5926 0 0 330 0 330 330 0 8 0 namei 1024 81288 0 81285 3 0 3 3 0 8 2 vcpupl 2048 33 0 0 5 0 5 5 0 8 0 vmpool 664 36 0 3 3 0 3 3 0 8 0 kstatmem 264 230 0 206 2 0 2 2 0 8 0 scxspl 216 88055 0 88055 8 0 8 8 1 8 8 plimitpl 152 789 0 774 1 0 1 1 0 8 0 sigapl 424 9900 0 9841 8 0 8 8 0 8 0 futexpl 64 104981 0 104980 1 0 1 1 0 8 0 knotepl 120 105072 0 104992 11 0 11 11 0 8 8 kqueuepl 184 1424 0 1416 4 0 4 4 0 8 3 pipepl 288 1423 0 1395 7 0 7 7 0 8 5 fdescpl 432 9722 0 9701 4 0 4 4 0 8 0 filepl 120 47820 0 47584 20 7 13 17 0 8 5 lockfpl 104 2100 0 2098 2 0 2 2 0 8 1 lockfspl 48 819 0 817 1 0 1 1 0 8 0 sessionpl 144 72 0 56 1 0 1 1 0 8 0 pgrppl 48 154 0 138 1 0 1 1 0 8 0 ucredpl 104 6660 0 6644 1 0 1 1 0 8 0 zombiepl 144 9841 0 9841 1 0 1 1 0 8 1 processpl 1072 9900 0 9841 5 0 5 5 0 8 0 procpl 680 23221 0 23147 10 0 10 10 0 8 2 sosppl 168 54 0 54 1 0 1 1 0 8 1 sockpl 488 13480 0 13450 226 213 13 36 0 8 8 mcl64k 65536 304 0 304 1 0 1 1 0 8 1 mcl16k 16384 215 0 215 1 0 1 1 0 8 1 mcl12k 12288 260 0 260 1 0 1 1 0 8 1 mcl9k 9216 147 0 147 1 0 1 1 0 8 1 mcl8k 8192 718 0 718 1 0 1 1 0 8 1 mcl4k 4096 2250 0 2250 1 0 1 1 0 8 1 mcl2k2 2112 57 0 57 1 0 1 1 0 8 1 mcl2k 2048 87552 0 87496 28 13 15 20 0 8 7 mtagpl 96 1505 0 1315 7 0 7 7 0 8 2 mbufpl 256 209699 0 209318 90 58 32 56 0 8 5 bufpl 280 20757 0 14368 457 0 457 457 0 8 0 anonpl 24 928536 0 916110 156 0 156 156 0 188 51 amapchunkpl 152 284642 0 283924 65 0 65 65 0 158 28 amappl16 200 14619 0 14152 50 15 35 39 0 8 8 amappl15 192 73 0 72 1 0 1 1 0 8 0 amappl14 184 295 0 283 2 0 2 2 0 8 1 amappl13 176 15 0 14 1 0 1 1 0 8 0 amappl12 168 11068 0 11044 2 0 2 2 0 8 0 amappl11 160 64 0 54 1 0 1 1 0 8 0 amappl10 152 86 0 74 1 0 1 1 0 8 0 amappl9 144 94 0 94 1 0 1 1 0 8 1 amappl8 136 482 0 389 4 0 4 4 0 8 0 amappl7 128 279 0 254 2 0 2 2 0 8 0 amappl6 120 977 0 963 1 0 1 1 0 8 0 amappl5 112 218 0 210 1 0 1 1 0 8 0 amappl4 104 789 0 765 2 0 2 2 0 8 1 amappl3 96 55038 0 54979 3 0 3 3 0 8 0 amappl2 88 10781 0 10713 3 0 3 3 0 8 1 amappl1 80 46856 0 46360 22 2 20 22 0 8 8 amappl 88 86414 0 86202 7 0 7 7 0 92 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 72 130 0 0 3 0 3 3 0 8 0 uaddrrnd 24 9758 0 9704 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 9758 0 9704 1 0 1 1 0 8 0 vmmpekpl 168 71669 0 71605 4 0 4 4 0 8 0 vmmpepl 168 592620 0 590573 134 0 134 134 0 357 17 vmsppl 352 9757 0 9704 6 0 6 6 0 8 0 rwobjpl 24 138307 0 130759 48 0 48 48 0 8 0 pdppl 4096 19522 0 19441 548 459 89 97 0 8 8 pvpl 32 2740988 0 2723226 332 0 332 332 0 265 142 pmappl 216 9757 0 9704 4 0 4 4 0 8 0 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 960 0 566 13 0 13 13 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace rt_timer_timer(fffffd80717f7e58) at rt_timer_timer+0x4f sys/net/route.c:1657 timeout_run(fffffd80717f7e78) at timeout_run+0x8f sys/kern/kern_timeout.c:666 softclock_thread(ffff80002a57d7e8) at softclock_thread+0xc4 sys/kern/kern_timeout.c:814 end trace frame: 0x0, count: -3 ddb> machine ddbcpu 1 No such command ddb> trace rt_timer_timer(fffffd80717f7e58) at rt_timer_timer+0x4f sys/net/route.c:1657 timeout_run(fffffd80717f7e78) at timeout_run+0x8f sys/kern/kern_timeout.c:666 softclock_thread(ffff80002a57d7e8) at softclock_thread+0xc4 sys/kern/kern_timeout.c:814 end trace frame: 0x0, count: -3