uvm_fault(0xffffffff83aef390, 0xffff800029ee5000, 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 *296222 31043 0 0 0x4000000 0 syz-executor pvclock_get(ffffffff8399c640) at pvclock_get+0x53 pvclock_read_begin sys/dev/pv/pvclock.c:278 [inline] pvclock_get(ffffffff8399c640) at pvclock_get+0x53 sys/dev/pv/pvclock.c:333 nanouptime(ffff80002a79dd20) at nanouptime+0x61 tc_delta sys/kern/kern_tc.c:138 [inline] nanouptime(ffff80002a79dd20) at nanouptime+0x61 binuptime sys/kern/kern_tc.c:191 [inline] nanouptime(ffff80002a79dd20) at nanouptime+0x61 sys/kern/kern_tc.c:217 clock_gettime(ffff80002a77d240,3,ffff80002a79dd20) at clock_gettime+0xab sys/kern/kern_time.c:129 sys_clock_gettime(ffff80002a77d240,ffff80002a79de40,ffff80002a79dd90) at sys_clock_gettime+0x57 sys/kern/kern_time.c:173 syscall(ffff80002a79de40) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80002a79de40) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x54127e4b5f0, 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(0xffffffff83aef390, 0xffff800029ee5000, 0, 1) -> e ddb> trace pvclock_get(ffffffff8399c640) at pvclock_get+0x53 pvclock_read_begin sys/dev/pv/pvclock.c:278 [inline] pvclock_get(ffffffff8399c640) at pvclock_get+0x53 sys/dev/pv/pvclock.c:333 nanouptime(ffff80002a79dd20) at nanouptime+0x61 tc_delta sys/kern/kern_tc.c:138 [inline] nanouptime(ffff80002a79dd20) at nanouptime+0x61 binuptime sys/kern/kern_tc.c:191 [inline] nanouptime(ffff80002a79dd20) at nanouptime+0x61 sys/kern/kern_tc.c:217 clock_gettime(ffff80002a77d240,3,ffff80002a79dd20) at clock_gettime+0xab sys/kern/kern_time.c:129 sys_clock_gettime(ffff80002a77d240,ffff80002a79de40,ffff80002a79dd90) at sys_clock_gettime+0x57 sys/kern/kern_time.c:173 syscall(ffff80002a79de40) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80002a79de40) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x54127e4b5f0, count: -6 ddb> show registers rdi 0xffff8000314ba000 rsi 0x537b __ALIGN_SIZE+0x437b rbp 0xffff80002a79dbf0 rbx 0xffffffff83963270 th0 rdx 0xffff8000314ba000 rcx 0x537a __ALIGN_SIZE+0x437a rax 0 r8 0xffffffff824c8030 uvm_map_inentry_sp r9 0 r10 0 r11 0xa6f0ec3aa2ab459e r12 0x3 r13 0x10a5 __ALIGN_SIZE+0xa5 r14 0xffffffff8399c640 pvclock_timecounter r15 0xffff800029ee5000 rip 0xffffffff83373d13 pvclock_get+0x53 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80002a79dba0 ss 0x10 pvclock_get+0x53: movl 0(%r15),%r12d ddb> show proc PROC (syz-executor) tid=296222 pid=31043 tcnt=2 stat=onproc flags process=0 proc=4000000 runpri=32, usrpri=86, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff80002a77c018,0xffffffff83a60b18 process=0xffff8000388d8d98 user=0xffff80002a798000, vmspace=0xfffff7006cfef2f0 estcpu=36, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 31043 35322 99896 0 2 0 syz-executor *31043 296222 99896 0 7 0x4000000 syz-executor 77955 130799 67952 0 2 0 syz-executor 77955 170599 67952 0 3 0x4000080 fsleep syz-executor 25235 189716 11020 0 2 0 syz-executor 25235 234566 11020 0 3 0x4000080 fifor syz-executor 25235 63759 11020 0 2 0x4000000 syz-executor 2191 132912 29406 0 2 0 syz-executor 2191 109603 29406 0 2 0x4000000 syz-executor 2232 118015 59603 0 2 0 syz-executor 2232 200291 59603 0 3 0x4000080 fsleep syz-executor 85808 431646 97779 0 2 0 syz-executor 85808 501957 97779 0 3 0x4000080 ttyin syz-executor 85808 198873 97779 0 3 0x4000080 fsleep syz-executor 61065 45816 82265 60928 2 0x10 syz-executor 61065 281772 82265 60928 3 0x4000090 fsleep syz-executor 61065 140005 82265 60928 3 0x4000090 fsleep syz-executor 91891 35515 1 0 3 0x80 nanoslp init 1247 38852 0 0 3 0x14280 nfsidl nfsio 91776 350836 0 0 3 0x14280 nfsidl nfsio 80466 320009 0 0 3 0x14280 nfsidl nfsio 84818 59892 0 0 3 0x14280 nfsidl nfsio 1920 156877 0 0 3 0x14280 nfsidl nfsio 63703 409784 0 0 3 0x14280 nfsidl nfsio 1116 42108 0 0 3 0x14280 nfsidl nfsio 19677 117756 0 0 3 0x14280 nfsidl nfsio 67015 138698 0 0 3 0x14280 nfsidl nfsio 60722 87459 0 0 3 0x14280 nfsidl nfsio 96806 148194 0 0 3 0x14280 nfsidl nfsio 83352 308044 0 0 3 0x14280 nfsidl nfsio 40352 3056 0 0 3 0x14280 nfsidl nfsio 27669 223638 0 0 3 0x14280 nfsidl nfsio 46340 314834 0 0 3 0x14280 nfsidl nfsio 56169 260072 0 0 3 0x14280 nfsidl nfsio 10239 252230 0 0 3 0x14280 nfsidl nfsio 60628 293146 0 0 3 0x14280 nfsidl nfsio 46751 352353 0 0 3 0x14280 nfsidl nfsio 62831 21694 0 0 3 0x14280 nfsidl nfsio 57077 436093 12063 0 3 0x82 wait syz-executor 11020 257068 12063 0 3 0x82 nanoslp syz-executor 97779 248363 12063 0 3 0x82 nanoslp syz-executor 59603 405833 12063 0 3 0x82 nanoslp syz-executor 99896 117620 12063 0 3 0x82 nanoslp syz-executor 67952 360889 12063 0 3 0x82 nanoslp syz-executor 29406 317412 12063 0 3 0x82 nanoslp syz-executor 82265 70925 12063 0 3 0x82 nanoslp syz-executor 12063 391519 1 0 3 0x82 kqread syz-executor 32520 194010 0 0 3 0x14200 bored smr 33928 249543 0 0 2 0x14200 zerothread 57835 186259 0 0 3 0x14200 aiodoned aiodoned 72012 345020 0 0 3 0x14200 syncer update 64037 487631 0 0 3 0x14200 cleaner cleaner 77900 444582 0 0 3 0x14200 reaper reaper 28247 509085 0 0 3 0x14200 pgdaemon pagedaemon 79578 479062 0 0 3 0x14200 bored viomb 62130 204015 0 0 3 0x40014200 acpi0 acpi0 74888 242204 0 0 3 0x14200 bored softnet0 61812 312517 0 0 3 0x14200 bored systqmp 2477 229107 0 0 3 0x14200 bored systq 81056 456446 0 0 3 0x40014200 tmoslp softclock 29460 445291 0 0 3 0x40014200 idle0 1 251375 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 11047 12238K 12771K 166960K 13326 0 pcb 17 17K 19K 166960K 358 0 rtable 297 10K 12K 166960K 517 0 pf 40 15K 22K 166960K 166 0 ifaddr 49 9K 10K 166960K 71 0 ifgroup 55 2K 2K 166960K 88 0 sysctl 3 1K 9K 166960K 21 0 counters 34 17K 18K 166960K 86 0 ioctlops 0 0K 4K 166960K 371 0 iov 1 2K 16K 166960K 69 0 mount 1 1K 1K 166960K 1 0 log 1 0K 0K 166960K 5 0 vnodes 1415 89K 89K 166960K 2254 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 9K 166960K 27 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 171 0 dirhash 12 2K 2K 166960K 18 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 17 65K 240K 166960K 900 0 sigio 0 0K 0K 166960K 41 0 proc 11 17K 124K 166960K 569 0 subproc 72 4K 4K 166960K 74 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 2 0K 0K 166960K 81 0 in_multi 101 7K 7K 166960K 115 0 ether_multi 1 0K 0K 166960K 2 0 mrt 2 0K 0K 166960K 30 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 97 440K 440K 166960K 97 0 exec 0 0K 1K 166960K 476 0 fusefs mount 1 32K 32K 166960K 1 0 pfkey data 0 0K 0K 166960K 5 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 135 78K 152K 166960K 9534 0 UVM aobj 40 4K 4K 166960K 43 0 pinsyscall 19 38K 96K 166960K 1995 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 24 0 NDP 12 0K 2K 166960K 40 0 temp 76 9120K 13220K 166960K 37194 0 kqueue 1 2K 28K 166960K 165 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 120 114 0 113 1 0 1 1 0 8 0 rtentry 136 156 0 27 5 0 5 5 0 8 0 unpcb 144 917 0 915 5 0 5 5 0 8 4 syncache 336 10 0 10 1 0 1 1 0 8 1 tcpcb 736 426 0 424 13 0 13 13 0 8 12 arp 96 28 0 8 1 0 1 1 0 8 0 ipq 40 6 0 0 1 0 1 1 0 8 0 ipqe 40 9 0 2 1 0 1 1 0 8 0 inpcb 328 1127 0 1122 15 3 12 12 0 8 11 ip6q 72 3 0 3 1 0 1 1 0 8 1 ip6af 40 6 0 6 1 0 1 1 0 8 1 nd6 112 30 0 0 1 0 1 1 0 8 0 pkpcb 40 42 0 42 1 0 1 1 0 8 1 kcovpl 48 8 0 0 1 0 1 1 0 8 0 mppekey 1024 2 0 2 1 0 1 1 0 8 1 ppxss 1072 50 0 50 1 0 1 1 0 8 1 pppxif 1416 3 0 3 1 0 1 1 0 8 1 pfstscr 40 14 0 10 1 0 1 1 0 8 0 pffrent 40 2 0 2 1 0 1 1 0 8 1 pfrktable 1344 3 0 3 1 0 1 1 0 8 1 pfanchor 1288 8 0 3 1 0 1 1 0 8 0 pftag 88 4 0 0 1 0 1 1 0 8 0 pfqueue 320 1 0 1 1 0 1 1 0 8 1 pfstitem 24 6 0 2 1 0 1 1 0 8 0 pfstkey 128 14 0 8 1 0 1 1 0 8 0 pfstate 384 8 0 6 1 0 1 1 0 8 0 pfrule 1360 11 0 11 1 0 1 1 0 8 1 rttmr 136 5 0 5 1 0 1 1 0 8 1 art_heap8 4096 4 0 0 4 0 4 4 0 8 0 art_heap4 256 535 0 54 31 0 31 31 0 8 0 art_table 40 539 0 54 5 0 5 5 0 8 0 art_node 32 154 0 51 1 0 1 1 0 8 0 sysvmsgpl 40 10 0 6 1 0 1 1 0 8 0 semupl 112 1 0 1 1 0 1 1 0 8 1 semapl 72 168 0 158 1 0 1 1 0 8 0 shmpl 112 40 0 3 2 0 2 2 0 8 0 dirhash 1024 21 0 4 3 0 3 3 0 8 0 dino2pl 256 3084 0 1622 92 0 92 92 0 8 0 ffsino 256 3084 0 1622 92 0 92 92 0 8 0 nchpl 144 4357 0 2658 64 0 64 64 0 8 0 rtmask 32 5 0 5 1 0 1 1 0 8 1 vnodes 216 3686 0 0 205 0 205 205 0 8 0 namei 1024 14846 0 14846 2 0 2 2 0 8 2 pfiaddrpl 120 2 0 2 1 0 1 1 0 8 1 kstatmem 264 49 0 24 2 0 2 2 0 8 0 scsiplug 72 1 0 1 1 0 1 1 0 8 1 scxspl 216 19703 0 19703 8 0 8 8 1 8 8 plimitpl 152 246 0 236 1 0 1 1 0 8 0 sigapl 424 1200 0 1147 8 0 8 8 0 8 0 knotepl 120 38486 0 38469 37 27 10 17 0 8 8 kqueuepl 184 335 0 334 4 0 4 4 0 8 3 pipepl 304 165 0 138 3 0 3 3 0 8 0 fdescpl 448 1167 0 1147 5 0 5 5 0 8 1 filepl 120 7460 0 7294 13 0 13 13 0 8 6 lockfpl 104 494 0 493 2 0 2 2 0 8 1 lockfspl 48 180 0 179 1 0 1 1 0 8 0 sessionpl 144 54 0 52 1 0 1 1 0 8 0 pgrppl 48 77 0 67 1 0 1 1 0 8 0 ucredpl 104 1250 0 1245 1 0 1 1 0 8 0 zombiepl 144 1148 0 1147 1 0 1 1 0 8 0 processpl 1152 1200 0 1147 5 0 5 5 0 8 0 procpl 664 2295 0 2232 7 0 7 7 0 8 1 sockpl 552 2227 0 2219 17 6 11 12 0 8 10 mcl64k 65536 35 0 35 1 0 1 1 0 8 1 mcl16k 16384 3 0 3 1 0 1 1 0 8 1 mcl12k 12288 1 0 1 1 0 1 1 0 8 1 mcl9k128 9344 5 0 3 1 0 1 1 0 8 0 mcl8k 8192 58 0 58 1 0 1 1 0 8 1 mcl4k 4096 3665 0 3611 12 0 12 12 0 8 4 mcl2k 2048 743 0 740 2 0 2 2 0 8 1 mtagpl 96 16 0 10 1 0 1 1 0 8 0 mbufpl 256 11992 0 11796 20 0 20 20 0 8 6 bufpl 272 7714 0 1498 415 0 415 415 0 8 0 anonpl 24 182367 0 180765 57 0 57 57 0 187 32 amapchunkpl 152 31660 0 31292 31 0 31 31 0 158 15 amappl16 200 3034 0 3005 18 3 15 15 0 8 8 amappl15 192 5 0 5 1 0 1 1 0 8 1 amappl14 184 418 0 418 1 0 1 1 0 8 1 amappl13 176 116 0 116 1 0 1 1 0 8 1 amappl12 168 1418 0 1400 2 0 2 2 0 8 0 amappl11 160 84 0 84 1 0 1 1 0 8 1 amappl10 152 59 0 59 1 0 1 1 0 8 1 amappl9 144 270 0 270 1 0 1 1 0 8 1 amappl8 136 98 0 97 1 0 1 1 0 8 0 amappl7 128 145 0 142 1 0 1 1 0 8 0 amappl6 120 147 0 146 1 0 1 1 0 8 0 amappl5 112 94 0 93 1 0 1 1 0 8 0 amappl4 104 278 0 275 1 0 1 1 0 8 0 amappl3 96 6282 0 6201 4 0 4 4 0 8 0 amappl2 88 539 0 529 2 0 2 2 0 8 0 amappl1 80 13154 0 13057 13 0 13 13 0 8 5 amappl 88 8659 0 8535 5 0 5 5 0 92 0 uvmvnodes 80 116 0 0 3 0 3 3 0 8 0 dma4096 4096 1 0 1 1 0 1 1 0 8 1 dma2048 2048 2 0 2 1 0 1 1 0 8 1 dma1024 1024 1 0 0 1 0 1 1 0 8 0 dma256 256 7 0 7 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 22 0 21 1 0 1 1 0 8 0 aobjpl 72 42 0 3 1 0 1 1 0 8 0 uaddrrnd 24 1167 0 1147 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1167 0 1147 1 0 1 1 0 8 0 vmmpekpl 168 10630 0 10602 2 0 2 2 0 8 0 vmmpepl 168 79599 0 78724 91 0 91 91 0 357 48 vmsppl 368 1166 0 1147 4 0 4 4 0 8 1 rwobjpl 40 22743 0 22299 13 0 13 13 0 8 0 pdppl 4096 2340 0 2294 100 54 46 82 0 8 0 pvpl 32 540772 0 535300 138 0 138 138 0 265 72 pmappl 216 1166 0 1147 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 805 0 54 22 0 22 22 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace pvclock_get(ffffffff8399c640) at pvclock_get+0x53 pvclock_read_begin sys/dev/pv/pvclock.c:278 [inline] pvclock_get(ffffffff8399c640) at pvclock_get+0x53 sys/dev/pv/pvclock.c:333 nanouptime(ffff80002a79dd20) at nanouptime+0x61 tc_delta sys/kern/kern_tc.c:138 [inline] nanouptime(ffff80002a79dd20) at nanouptime+0x61 binuptime sys/kern/kern_tc.c:191 [inline] nanouptime(ffff80002a79dd20) at nanouptime+0x61 sys/kern/kern_tc.c:217 clock_gettime(ffff80002a77d240,3,ffff80002a79dd20) at clock_gettime+0xab sys/kern/kern_time.c:129 sys_clock_gettime(ffff80002a77d240,ffff80002a79de40,ffff80002a79dd90) at sys_clock_gettime+0x57 sys/kern/kern_time.c:173 syscall(ffff80002a79de40) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80002a79de40) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x54127e4b5f0, count: -6 ddb> machine ddbcpu 1 No such command ddb>