uvm_fault(0xffffffff839f9188, 0xffff800029ef5000, 0, 1) -> e kernel: page fault trap, code=0 Stopped at pvclock_get+0x53: movl 0(%r15),%r12d TID PID UID PRFLAGS PFLAGS CPU COMMAND *446979 65464 0 0x10 0x4000000 0 syz-executor pvclock_get(ffffffff83912090) at pvclock_get+0x53 pvclock_read_begin sys/dev/pv/pvclock.c:278 [inline] pvclock_get(ffffffff83912090) at pvclock_get+0x53 sys/dev/pv/pvclock.c:333 nanouptime(ffff80003c91cff0) at nanouptime+0x61 tc_delta sys/kern/kern_tc.c:138 [inline] nanouptime(ffff80003c91cff0) at nanouptime+0x61 binuptime sys/kern/kern_tc.c:191 [inline] nanouptime(ffff80003c91cff0) at nanouptime+0x61 sys/kern/kern_tc.c:217 clock_gettime(ffff8000310c1770,3,ffff80003c91cff0) at clock_gettime+0xab sys/kern/kern_time.c:129 sys_clock_gettime(ffff8000310c1770,ffff80003c91d110,ffff80003c91d060) at sys_clock_gettime+0x57 sys/kern/kern_time.c:173 syscall(ffff80003c91d110) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c91d110) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x1cfe9434c30, 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(0xffffffff839f9188, 0xffff800029ef5000, 0, 1) -> e ddb> trace pvclock_get(ffffffff83912090) at pvclock_get+0x53 pvclock_read_begin sys/dev/pv/pvclock.c:278 [inline] pvclock_get(ffffffff83912090) at pvclock_get+0x53 sys/dev/pv/pvclock.c:333 nanouptime(ffff80003c91cff0) at nanouptime+0x61 tc_delta sys/kern/kern_tc.c:138 [inline] nanouptime(ffff80003c91cff0) at nanouptime+0x61 binuptime sys/kern/kern_tc.c:191 [inline] nanouptime(ffff80003c91cff0) at nanouptime+0x61 sys/kern/kern_tc.c:217 clock_gettime(ffff8000310c1770,3,ffff80003c91cff0) at clock_gettime+0xab sys/kern/kern_time.c:129 sys_clock_gettime(ffff8000310c1770,ffff80003c91d110,ffff80003c91d060) at sys_clock_gettime+0x57 sys/kern/kern_time.c:173 syscall(ffff80003c91d110) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c91d110) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x1cfe9434c30, count: -6 ddb> show registers rdi 0xffffffff rsi 0xd rbp 0xffff80003c91cec0 rbx 0xffffffff838b1cd8 th1 rdx 0 rcx 0xffff8000ffffa418 rax 0 r8 0xffffffff82a372d0 uvm_map_inentry_sp r9 0 r10 0 r11 0xbb35c20ab02f85cd r12 0x3 r13 0xed6 r14 0xffffffff83912090 pvclock_timecounter r15 0xffff800029ef5000 rip 0xffffffff8304b843 pvclock_get+0x53 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80003c91ce70 ss 0x10 pvclock_get+0x53: movl 0(%r15),%r12d ddb> show proc PROC (syz-executor) tid=446979 pid=65464 tcnt=3 stat=onproc flags process=10 proc=4000000 runpri=32, usrpri=50, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff8000310c1a08,0xffff8000310c1250 process=0xffff8000ffffa418 user=0xffff80003c918000, vmspace=0xfffffd8075806748 estcpu=36, cpticks=0, pctcpu=0.0, user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 65464 375523 94953 0 2 0x10 syz-executor *65464 446979 94953 0 7 0x4000010 syz-executor 65464 303900 94953 0 3 0x4000090 fsleep syz-executor 59634 439834 73572 0 2 0 syz-executor 59634 359478 73572 0 3 0x4000080 fsleep syz-executor 27535 283062 69653 0 3 0x90 nanoslp syz-executor 27535 15302 69653 0 3 0x4000090 lockf syz-executor 27535 408363 69653 0 3 0x4000090 fsleep syz-executor 77700 388989 1 0 3 0x82 nanoslp getty 76088 404615 40235 0 2 0 syz-executor 76088 472657 40235 0 3 0x4000080 fsleep syz-executor 50164 407880 66161 0 3 0x2 clonelk syz-executor 23036 293616 71215 0 3 0x80 nanoslp syz-executor 23036 95577 71215 0 3 0x4000080 kqpoll syz-executor 23036 180228 71215 0 3 0x4000080 fsleep syz-executor 23036 30394 71215 0 3 0x4000080 fsleep syz-executor 71215 34003 66161 0 3 0x82 nanoslp syz-executor 94953 504506 66161 0 3 0x82 nanoslp syz-executor 79601 269589 66161 0 3 0x82 nanoslp syz-executor 40235 36146 66161 0 3 0x82 nanoslp syz-executor 69653 117357 66161 0 3 0x82 nanoslp syz-executor 93708 447095 66161 0 3 0x82 nanoslp syz-executor 73572 494279 66161 0 3 0x82 nanoslp syz-executor 66161 218951 59366 0 3 0x82 kqread syz-executor 59366 155391 57978 0 3 0x10008a sigsusp ksh 57978 79108 69120 0 3 0x98 kqread sshd-session 69120 405076 73835 0 3 0x92 kqread sshd-session 73835 98775 1 0 3 0x88 kqread sshd 3965 475273 67283 73 3 0x1100090 kqread syslogd 67283 166554 1 0 3 0x100082 sbwait syslogd 92924 146152 1 0 3 0x100080 kqread resolvd 1339 316006 93526 77 3 0x100092 kqread dhcpleased 94867 235143 93526 77 3 0x100092 kqread dhcpleased 93526 232019 1 0 3 0x80 kqread dhcpleased 34696 207098 0 0 3 0x14200 bored smr 78915 58402 0 0 2 0x14200 zerothread 33020 364266 0 0 3 0x14200 aiodoned aiodoned 80435 295687 0 0 3 0x14200 syncer update 95445 280687 0 0 3 0x14200 cleaner cleaner 41924 65968 0 0 3 0x14200 reaper reaper 46499 385086 0 0 3 0x14200 pgdaemon pagedaemon 22899 418724 0 0 3 0x14200 bored viomb 72753 130137 0 0 3 0x40014200 acpi0 acpi0 41721 51558 0 0 3 0x14200 bored softnet0 18228 11122 0 0 3 0x14200 bored systqmp 42629 283858 0 0 3 0x14200 bored systq 30351 385277 0 0 3 0x40014200 tmoslp softclock 23663 282320 0 0 3 0x40014200 idle0 1 178146 0 0 3 0x82 wait init 0 0 -1 0 3 0x10010200 scheduler swapper ddb> show all locks No such command ddb> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 11040 12120K 12462K 166960K 12625 0 pcb 17 14K 16K 166960K 205 0 rtable 211 7K 8K 166960K 488 0 pf 33 13K 20K 166960K 152 0 ifaddr 39 6K 8K 166960K 68 0 ifgroup 48 2K 2K 166960K 98 0 sysctl 3 1K 9K 166960K 13 0 counters 33 17K 18K 166960K 55 0 ioctlops 0 0K 4K 166960K 169 0 iov 0 0K 8K 166960K 16 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1331 84K 84K 166960K 1755 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 9K 166960K 9 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 1K 166960K 31 0 dirhash 12 2K 2K 166960K 21 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 17 61K 93K 166960K 578 0 sigio 0 0K 0K 166960K 18 0 proc 60 59K 91K 166960K 592 0 subproc 72 4K 4K 166960K 90 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 124 0 in_multi 85 6K 7K 166960K 126 0 ether_multi 1 0K 0K 166960K 4 0 mrt 0 0K 0K 166960K 15 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 85 387K 387K 166960K 85 0 exec 0 0K 1K 166960K 427 0 fusefs mount 1 32K 32K 166960K 1 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 224 159K 168K 166960K 6779 0 UVM aobj 13 2K 2K 166960K 14 0 pinsyscall 38 76K 94K 166960K 1713 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 20 0 NDP 13 0K 1K 166960K 43 0 temp 45 9068K 13167K 166960K 30772 0 kqueue 14 22K 36K 166960K 114 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 66 0 63 1 0 1 1 0 8 0 rtentry 136 139 0 49 4 0 4 4 0 8 0 unpcb 144 445 0 426 7 1 6 6 0 8 5 syncache 336 7 0 7 2 1 1 1 0 8 1 sackhl 24 1 0 1 1 0 1 1 0 8 1 tcpcb 736 185 0 179 7 0 7 7 0 8 6 arp 96 23 0 6 1 0 1 1 0 8 0 inpcb 328 549 0 539 7 0 7 7 0 8 5 nd6 112 28 0 6 1 0 1 1 0 8 0 pkpcb 40 4 0 4 1 0 1 1 0 8 1 kcovpl 48 10 0 2 1 0 1 1 0 8 0 mppekey 1024 2 0 2 1 1 0 1 0 8 0 ppxss 1072 15 0 15 1 0 1 1 0 8 1 pppxif 1416 2 0 2 1 1 0 1 0 8 0 pfstscr 40 4 0 4 2 1 1 1 0 8 1 pffrag 232 6 0 1 1 0 1 1 0 482 0 pffrnode 88 5 0 1 1 0 1 1 0 8 0 pffrent 40 13 0 8 2 1 1 1 0 8 0 pfrktable 1344 15 0 15 2 1 1 1 0 8 1 pfanchor 1288 10 0 7 2 1 1 1 0 8 0 pftag 88 7 0 3 1 0 1 1 0 8 0 pfqueue 320 2 0 1 1 0 1 1 0 8 0 pfstkey 128 6 0 6 2 1 1 1 0 8 1 pfstate 384 3 0 3 2 1 1 1 0 8 1 pfrule 1360 15 0 15 2 1 1 1 0 8 1 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 565 0 179 29 0 29 29 0 8 4 art_table 40 566 0 179 5 0 5 5 0 8 0 art_node 32 137 0 58 1 0 1 1 0 8 0 sysvmsgpl 40 5 0 2 2 1 1 1 0 8 0 semapl 112 25 0 15 1 0 1 1 0 8 0 shmpl 112 11 0 1 1 0 1 1 0 8 0 dirhash 1024 23 0 6 3 0 3 3 0 8 0 dino2pl 256 2347 0 886 92 0 92 92 0 8 0 ffsino 256 2347 0 886 92 0 92 92 0 8 0 nchpl 144 3155 0 1450 64 0 64 64 0 8 0 rtmask 32 4 0 4 2 1 1 1 0 8 1 vnodes 216 2684 0 0 150 0 150 150 0 8 0 namei 1024 10096 0 10096 3 1 2 2 0 8 2 pfiaddrpl 120 4 0 4 1 1 0 1 0 8 0 kstatmem 264 51 0 28 2 0 2 2 0 8 0 scsiplug 72 3 0 3 2 1 1 1 0 8 1 scxspl 216 16445 0 16445 9 1 8 8 1 8 8 plimitpl 152 126 0 109 1 0 1 1 0 8 0 sigapl 424 872 0 830 7 1 6 6 0 8 1 knotepl 120 20990 0 20943 38 6 32 32 0 8 29 kqueuepl 184 233 0 223 4 0 4 4 0 8 3 pipepl 304 156 0 129 3 0 3 3 0 8 0 fdescpl 448 857 0 828 5 1 4 5 0 8 0 filepl 120 4448 0 4227 13 0 13 13 0 8 5 lockfpl 104 260 0 256 1 0 1 1 0 8 0 lockfspl 48 90 0 87 1 0 1 1 0 8 0 sessionpl 144 41 0 33 1 0 1 1 0 8 0 pgrppl 48 59 0 43 1 0 1 1 0 8 0 ucredpl 104 533 0 518 1 0 1 1 0 8 0 zombiepl 144 832 0 830 1 0 1 1 0 8 0 processpl 1152 872 0 830 4 0 4 4 0 8 0 procpl 664 1538 0 1487 6 0 6 6 0 8 0 sosppl 176 3 0 3 1 0 1 1 0 8 1 sockpl 552 1077 0 1045 13 2 11 12 0 8 8 mcl64k 65536 30 0 30 2 1 1 1 0 8 1 mcl12k 12288 1 0 1 1 1 0 1 0 8 0 mcl9k128 9344 1 0 1 1 1 0 1 0 8 0 mcl8k 8192 7 0 7 2 1 1 1 0 8 1 mcl4k 4096 3091 0 3039 14 6 8 14 0 8 0 mcl2k 2048 487 0 484 2 0 2 2 0 8 1 mtagpl 96 16 0 10 1 0 1 1 0 8 0 mbufpl 256 8678 0 8527 16 1 15 15 0 8 4 bufpl 280 6430 0 216 444 0 444 444 0 8 0 anonpl 24 154517 0 149263 75 11 64 64 0 187 25 amapchunkpl 152 21923 0 21311 38 4 34 34 0 158 10 amappl16 200 3076 0 3047 25 9 16 25 0 8 8 amappl15 192 7 0 7 1 1 0 1 0 8 0 amappl14 184 423 0 422 1 0 1 1 0 8 0 amappl13 176 120 0 110 1 0 1 1 0 8 0 amappl12 168 1099 0 1071 2 0 2 2 0 8 0 amappl11 160 5 0 4 2 1 1 1 0 8 0 amappl10 152 153 0 143 1 0 1 1 0 8 0 amappl9 144 269 0 268 2 1 1 1 0 8 0 amappl8 136 110 0 108 1 0 1 1 0 8 0 amappl7 128 145 0 133 1 0 1 1 0 8 0 amappl6 120 161 0 160 1 0 1 1 0 8 0 amappl5 112 89 0 82 1 0 1 1 0 8 0 amappl4 104 357 0 341 1 0 1 1 0 8 0 amappl3 96 4235 0 4120 4 0 4 4 0 8 0 amappl2 88 534 0 480 2 0 2 2 0 8 0 amappl1 80 11359 0 10809 16 1 15 15 0 8 2 amappl 88 5973 0 5811 5 0 5 5 0 92 0 uvmvnodes 80 112 0 0 3 0 3 3 0 8 0 dma32768 32768 1 0 1 1 0 1 1 0 8 1 dma8192 8192 1 0 1 1 0 1 1 0 8 1 dma4096 4096 1 0 1 1 1 0 1 0 8 0 dma2048 2048 1 0 1 1 0 1 1 0 8 1 dma1024 1024 1 0 0 1 0 1 1 0 8 0 dma256 256 8 0 8 2 1 1 1 0 8 1 dma128 128 255 0 255 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 13 0 1 1 0 1 1 0 8 0 uaddrrnd 24 857 0 828 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 857 0 828 1 0 1 1 0 8 0 vmmpekpl 168 8376 0 8339 2 0 2 2 0 8 0 vmmpepl 168 61795 0 60001 101 0 101 101 0 357 15 vmsppl 368 856 0 828 4 1 3 4 0 8 0 rwobjpl 40 19414 0 18428 15 0 15 15 0 8 0 pdppl 4096 1720 0 1656 102 34 68 80 0 8 4 pvpl 32 402057 0 390236 172 15 157 157 0 265 47 pmappl 216 856 0 828 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 386 0 51 10 0 10 10 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace pvclock_get(ffffffff83912090) at pvclock_get+0x53 pvclock_read_begin sys/dev/pv/pvclock.c:278 [inline] pvclock_get(ffffffff83912090) at pvclock_get+0x53 sys/dev/pv/pvclock.c:333 nanouptime(ffff80003c91cff0) at nanouptime+0x61 tc_delta sys/kern/kern_tc.c:138 [inline] nanouptime(ffff80003c91cff0) at nanouptime+0x61 binuptime sys/kern/kern_tc.c:191 [inline] nanouptime(ffff80003c91cff0) at nanouptime+0x61 sys/kern/kern_tc.c:217 clock_gettime(ffff8000310c1770,3,ffff80003c91cff0) at clock_gettime+0xab sys/kern/kern_time.c:129 sys_clock_gettime(ffff8000310c1770,ffff80003c91d110,ffff80003c91d060) at sys_clock_gettime+0x57 sys/kern/kern_time.c:173 syscall(ffff80003c91d110) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c91d110) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x1cfe9434c30, count: -6 ddb> machine ddbcpu 1 No such command ddb> trace pvclock_get(ffffffff83912090) at pvclock_get+0x53 pvclock_read_begin sys/dev/pv/pvclock.c:278 [inline] pvclock_get(ffffffff83912090) at pvclock_get+0x53 sys/dev/pv/pvclock.c:333 nanouptime(ffff80003c91cff0) at nanouptime+0x61 tc_delta sys/kern/kern_tc.c:138 [inline] nanouptime(ffff80003c91cff0) at nanouptime+0x61 binuptime sys/kern/kern_tc.c:191 [inline] nanouptime(ffff80003c91cff0) at nanouptime+0x61 sys/kern/kern_tc.c:217 clock_gettime(ffff8000310c1770,3,ffff80003c91cff0) at clock_gettime+0xab sys/kern/kern_time.c:129 sys_clock_gettime(ffff8000310c1770,ffff80003c91d110,ffff80003c91d060) at sys_clock_gettime+0x57 sys/kern/kern_time.c:173 syscall(ffff80003c91d110) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c91d110) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x1cfe9434c30, count: -6