uvm_fault(0xffffffff82cbc998, 0xffffffffbcb37730, 0, 1) -> e kernel: page fault trap, code=0 Stopped at softclock_process_kclock_timeout+0x3a: movq timeout_kclock(%r15),%r13 TID PID UID PRFLAGS PFLAGS CPU COMMAND softclock_process_kclock_timeout(fffffd806d50cc58,0) at softclock_process_kclock_timeout+0x3a sys/kern/kern_timeout.c:652 softclock(0) at softclock+0x11a sys/kern/kern_timeout.c:717 softintr_dispatch(0) at softintr_dispatch+0xd1 sys/arch/amd64/amd64/softintr.c:90 Xsoftclock() at Xsoftclock+0x1f acpicpu_idle() at acpicpu_idle+0x2ee sys/dev/acpi/acpicpu.c:1206 sched_idle(ffffffff82ba1ff0) at sched_idle+0x2ea sys/kern/kern_sched.c:175 end trace frame: 0x0, count: 9 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(0xffffffff82cbc998, 0xffffffffbcb37730, 0, 1) -> e ddb> trace softclock_process_kclock_timeout(fffffd806d50cc58,0) at softclock_process_kclock_timeout+0x3a sys/kern/kern_timeout.c:652 softclock(0) at softclock+0x11a sys/kern/kern_timeout.c:717 softintr_dispatch(0) at softintr_dispatch+0xd1 sys/arch/amd64/amd64/softintr.c:90 Xsoftclock() at Xsoftclock+0x1f acpicpu_idle() at acpicpu_idle+0x2ee sys/dev/acpi/acpicpu.c:1206 sched_idle(ffffffff82ba1ff0) at sched_idle+0x2ea sys/kern/kern_sched.c:175 end trace frame: 0x0, count: -6 ddb> show registers rdi 0xfffffd806d50cc58 rsi 0 rbp 0xffff8000215fec60 rbx 0 rdx 0 rcx 0xffffffff82cb0670 timeout_todo rax 0x134d500 __kernel_phys_base+0x34d500 r8 0 r9 0 r10 0x23989c92b9057582 r11 0xb27be6cc41c45193 r12 0x2d7a797300000000 r13 0xffffffff82ccc550 rdrand_tmo r14 0xfffffd806d50cc58 r15 0x39e7f000 rip 0xffffffff81bd588a softclock_process_kclock_timeout+0x3a cs 0x8 rflags 0x10206 __ALIGN_SIZE+0xf206 rsp 0xffff8000215fec10 ss 0x10 softclock_process_kclock_timeout+0x3a: movq timeout_kclock(%r15),%r13 ddb> show proc PROC (idle0) pid=71662 stat=onproc flags process=14000 proc=40000200 pri=0, usrpri=50, nice=20 forw=0xcf8f5ac7e1ec5d80, list=0xffff8000fffffb30,0xffff8000fffff318 process=0xffff8000ffffcfc0 user=0xffff8000215f9000, vmspace=0xffffffff82cd0248 estcpu=0, cpticks=18633, pctcpu=0.0 user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 40423 396190 3035 0 3 0x80 nanoslp syz-executor.7 40423 408590 3035 0 3 0x4000080 lockf syz-executor.7 40423 384976 3035 0 3 0x4000080 lockf syz-executor.7 40423 140561 3035 0 3 0x4000080 lockf syz-executor.7 40423 261951 3035 0 3 0x4000080 lockf syz-executor.7 40423 409118 3035 0 3 0x4000080 fsleep syz-executor.7 26172 186416 0 0 3 0x14200 acct acct 38268 497099 80143 0 3 0x82 piperd syz-executor.3 73417 132637 80143 0 3 0x82 piperd syz-executor.4 65913 226469 80143 0 3 0x82 nanoslp syz-executor.5 24668 494497 80143 0 3 0x82 piperd syz-executor.6 21967 38206 80143 0 3 0x82 piperd syz-executor.1 74638 252053 80143 0 3 0x82 piperd syz-executor.0 3035 470226 80143 0 3 0x82 nanoslp syz-executor.7 87488 266170 80143 0 3 0x82 piperd syz-executor.2 29575 306930 1 0 3 0x100083 ttyin getty 66245 24106 0 0 3 0x14200 bored sosplice 80143 463840 21106 0 3 0x82 wait syz-fuzzer 80143 95762 21106 0 3 0x4000082 thrsleep syz-fuzzer 80143 145705 21106 0 3 0x4000082 wait syz-fuzzer 80143 476 21106 0 3 0x4000082 wait syz-fuzzer 80143 296839 21106 0 3 0x4000082 thrsleep syz-fuzzer 80143 462293 21106 0 3 0x4000082 wait syz-fuzzer 80143 24364 21106 0 3 0x4000082 thrsleep syz-fuzzer 80143 34065 21106 0 3 0x4000082 kqread syz-fuzzer 80143 58006 21106 0 3 0x4000082 thrsleep syz-fuzzer 80143 121530 21106 0 3 0x4000082 wait syz-fuzzer 80143 114512 21106 0 3 0x4000082 thrsleep syz-fuzzer 80143 347639 21106 0 3 0x4000082 wait syz-fuzzer 80143 521394 21106 0 3 0x4000082 wait syz-fuzzer 80143 393388 21106 0 3 0x4000082 wait syz-fuzzer 21106 60667 28794 0 3 0x10008a sigsusp ksh 28794 418708 46805 0 3 0x9a kqread sshd 46805 410783 1 0 3 0x88 kqread sshd 80209 505026 48454 73 3 0x1100090 kqread syslogd 48454 441103 1 0 3 0x100082 netio syslogd 55919 258763 1 0 3 0x100080 kqread resolvd 90836 244710 162 77 3 0x100092 kqread dhcpleased 41767 240493 162 77 3 0x100092 kqread dhcpleased 162 156587 1 0 3 0x80 kqread dhcpleased 83110 401340 0 0 3 0x14200 bored smr 70110 298273 0 0 3 0x14200 pgzero zerothread 96462 88893 0 0 3 0x14200 aiodoned aiodoned 15385 154277 0 0 3 0x14200 syncer update 55378 213870 0 0 3 0x14200 cleaner cleaner 49805 220612 0 0 3 0x14200 reaper reaper 60649 291296 0 0 3 0x14200 pgdaemon pagedaemon 10462 321092 0 0 3 0x14200 bored viomb 43580 394862 0 0 3 0x40014200 acpi0 acpi0 68373 468057 0 0 3 0x14200 bored softnet 20757 85068 0 0 3 0x14200 bored softnet 72649 71599 0 0 3 0x14200 bored softnet 11671 56283 0 0 3 0x14200 bored softnet 9201 260091 0 0 3 0x14200 bored systqmp 18855 181469 0 0 3 0x14200 bored systq 62129 254693 0 0 3 0x40014200 bored softclock *89644 71662 0 0 7 0x40014200 idle0 1 268002 0 0 3 0x80082 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 10230 6432K 6875K 78643K 14328 0 pcb 13 18K 21K 78643K 1754 0 rtable 136 6K 8K 78643K 2464 0 ifaddr 63 20K 23K 78643K 714 0 sysctl 3 1K 1K 78643K 3 0 counters 25 17K 17K 78643K 220 0 ioctlops 0 0K 4K 78643K 690 0 iov 0 0K 17K 78643K 1223 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 4 0 vnodes 1602 100K 101K 78643K 5193 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 9K 78643K 62 0 VM map 2 1K 1K 78643K 2 0 sem 37 2K 2K 78643K 296 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12548 0 file desc 12 41K 69K 78643K 6430 0 sigio 0 0K 0K 78643K 719 0 proc 60 59K 75K 78643K 1874 0 subproc 104 6K 6K 78643K 706 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 282 0 in_multi 46 3K 6K 78643K 802 0 ether_multi 1 0K 0K 78643K 31 0 mrt 1 0K 0K 78643K 29 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 295 1314K 1314K 78643K 295 0 exec 0 0K 1K 78643K 2048 0 pfkey data 0 0K 0K 78643K 77 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 8 62K 64K 78643K 10 0 UVM amap 278 85K 99K 78643K 41825 0 UVM aobj 131 4K 4K 78643K 144 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 206 0 NDP 11 0K 1K 78643K 264 0 temp 126 5770K 6794K 78643K 70046 0 kqueue 12 18K 26K 78643K 611 0 SYN cache 2 16K 16K 78643K 2 0 ddb> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle rtpcb 120 537 0 534 8 7 1 3 0 8 0 rtentry 112 741 0 686 5 2 3 4 0 8 0 unpcb 144 16429 0 16416 96 95 1 10 0 8 0 syncache 296 38 0 38 13 13 0 1 0 8 0 tcpqe 32 280 0 280 8 8 0 1 0 8 0 tcpcb 776 1756 0 1752 66 65 1 11 0 8 0 arp 88 111 0 101 1 0 1 1 0 8 0 ipq 40 44 0 44 4 4 0 1 0 8 0 ipqe 40 94 0 94 4 4 0 1 0 8 0 inpcb 336 8262 0 8255 120 119 1 17 0 8 0 nd6 48 181 0 169 1 0 1 1 0 8 0 pkpcb 40 21 0 21 6 6 0 1 0 8 0 kcovpl 48 54 0 46 1 0 1 1 0 8 0 mppekey 1024 3 0 3 1 1 0 1 0 8 0 ppxss 1160 86 0 86 10 9 1 1 0 8 1 pppxif 1360 55 0 55 8 7 1 1 0 8 1 pfstscr 40 38 0 37 1 0 1 1 0 8 0 pfosfp 40 15 0 12 1 0 1 1 0 8 0 pfosfpen 112 15 0 6 1 0 1 1 0 8 0 pfanchor 1280 404 0 239 19 3 16 19 0 8 0 pfstitem 24 1 0 0 1 0 1 1 0 8 0 pfstkey 128 41 0 40 1 0 1 1 0 8 0 pfstate 352 38 0 37 1 0 1 1 0 8 0 rttmr 136 7 0 7 3 3 0 1 0 8 0 art_heap8 4096 2 0 1 2 1 1 2 0 8 0 art_heap4 256 3478 0 3261 55 40 15 30 0 8 0 art_table 32 3480 0 3262 6 2 4 4 0 8 0 art_node 16 740 0 694 1 0 1 1 0 8 0 sysvmsgpl 40 49 0 9 1 0 1 1 0 8 0 semupl 112 1 0 1 1 1 0 1 0 8 0 semapl 112 289 0 254 1 0 1 1 0 8 0 shmpl 112 141 0 13 4 0 4 4 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 10017 0 8579 92 1 91 91 0 8 0 ffsino 240 10017 0 8579 86 0 86 86 0 8 0 nchpl 144 18629 0 17007 63 1 62 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 74515 0 74515 9 8 1 3 0 8 1 vmpool 664 22 0 22 4 4 0 1 0 8 0 kstatmem 264 290 0 268 3 1 2 3 0 8 0 scsiplug 72 6 0 6 2 2 0 1 0 8 0 scxspl 216 53465 0 53465 21 20 1 8 0 8 1 plimitpl 152 1530 0 1514 1 0 1 1 0 8 0 sigapl 424 6678 0 6637 8 2 6 8 0 8 0 futexpl 64 61710 0 61709 5 4 1 1 0 8 0 knotepl 120 96899 0 96819 65 59 6 15 0 8 0 kqueuepl 184 1639 0 1631 21 20 1 4 0 8 0 pipepl 288 2492 0 2463 37 34 3 8 0 8 0 fdescpl 432 6616 0 6593 4 0 4 4 0 8 0 filepl 120 62689 0 62445 106 96 10 20 0 8 1 lockfpl 104 1324 0 1317 3 2 1 2 0 8 0 lockfspl 48 435 0 432 1 0 1 1 0 8 0 sessionpl 144 70 0 54 1 0 1 1 0 8 0 pgrppl 48 162 0 146 1 0 1 1 0 8 0 ucredpl 104 7455 0 7443 1 0 1 1 0 8 0 zombiepl 144 6638 0 6637 5 4 1 1 0 8 0 processpl 1008 6678 0 6637 10 3 7 9 0 8 0 procpl 696 16193 0 16134 17 9 8 10 0 8 0 sosppl 168 60 0 60 7 7 0 1 0 8 0 sockpl 456 25253 0 25230 631 623 8 45 0 8 5 mcl64k 65536 166 0 166 19 18 1 1 0 8 1 mcl16k 16384 91 0 91 18 18 0 1 0 8 0 mcl12k 12288 196 0 196 18 17 1 1 0 8 1 mcl9k 9216 172 0 172 15 15 0 1 0 8 0 mcl8k 8192 577 0 577 22 22 0 1 0 8 0 mcl4k 4096 719 0 719 13 12 1 1 0 8 1 mcl2k2 2112 48 0 48 16 16 0 1 0 8 0 mcl2k 2048 96936 0 96859 75 63 12 34 0 8 0 mtagpl 96 102 0 102 6 6 0 2 0 8 0 mbufpl 256 251683 0 251504 700 685 15 443 0 8 1 bufpl 288 12841 0 6447 458 0 458 458 0 8 0 anonpl 24 1302053 0 1285441 230 106 124 181 0 188 0 amapchunkpl 152 118389 0 117724 74 43 31 59 0 158 0 amappl16 200 12584 0 11981 104 71 33 45 0 8 0 amappl15 192 73 0 70 2 1 1 1 0 8 0 amappl14 184 335 0 320 2 1 1 2 0 8 0 amappl13 176 3 0 3 1 1 0 1 0 8 0 amappl12 168 952 0 950 1 0 1 1 0 8 0 amappl11 160 48 0 36 1 0 1 1 0 8 0 amappl10 152 123 0 111 2 1 1 1 0 8 0 amappl9 144 976 0 976 4 4 0 1 0 8 0 amappl8 136 357 0 288 3 0 3 3 0 8 0 amappl7 128 249 0 224 2 0 2 2 0 8 0 amappl6 120 365 0 354 2 1 1 2 0 8 0 amappl5 112 367 0 361 1 0 1 1 0 8 0 amappl4 104 1083 0 1057 2 1 1 2 0 8 0 amappl3 96 17923 0 17880 2 0 2 2 0 8 0 amappl2 88 7416 0 7351 3 1 2 3 0 8 0 amappl1 80 148269 0 147619 31 14 17 26 0 8 0 amappl 88 40856 0 40691 6 1 5 5 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 72 143 0 13 3 0 3 3 0 8 0 uaddrrnd 24 6638 0 6615 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 6638 0 6615 1 0 1 1 0 8 0 vmmpekpl 168 55700 0 55642 3 0 3 3 0 8 0 vmmpepl 168 625492 0 623040 296 162 134 160 0 357 0 vmsppl 344 6637 0 6615 3 0 3 3 0 8 0 rwobjpl 24 161242 0 153517 51 2 49 49 0 8 0 pdppl 4096 13282 0 13230 563 499 64 66 0 8 12 pvpl 32 2652424 0 2630702 488 281 207 361 0 265 0 pmappl 216 6637 0 6615 2 0 2 2 0 8 0 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 2284 0 1530 35 11 24 35 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace softclock_process_kclock_timeout(fffffd806d50cc58,0) at softclock_process_kclock_timeout+0x3a sys/kern/kern_timeout.c:652 softclock(0) at softclock+0x11a sys/kern/kern_timeout.c:717 softintr_dispatch(0) at softintr_dispatch+0xd1 sys/arch/amd64/amd64/softintr.c:90 Xsoftclock() at Xsoftclock+0x1f acpicpu_idle() at acpicpu_idle+0x2ee sys/dev/acpi/acpicpu.c:1206 sched_idle(ffffffff82ba1ff0) at sched_idle+0x2ea sys/kern/kern_sched.c:175 end trace frame: 0x0, count: -6 ddb> machine ddbcpu 1 No such command ddb> trace softclock_process_kclock_timeout(fffffd806d50cc58,0) at softclock_process_kclock_timeout+0x3a sys/kern/kern_timeout.c:652 softclock(0) at softclock+0x11a sys/kern/kern_timeout.c:717 softintr_dispatch(0) at softintr_dispatch+0xd1 sys/arch/amd64/amd64/softintr.c:90 Xsoftclock() at Xsoftclock+0x1f acpicpu_idle() at acpicpu_idle+0x2ee sys/dev/acpi/acpicpu.c:1206 sched_idle(ffffffff82ba1ff0) at sched_idle+0x2ea sys/kern/kern_sched.c:175 end trace frame: 0x0, count: -6