uvm_fault(0xffffffff83963648, 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 pvclock_get(ffffffff838f2b00) at pvclock_get+0x53 pvclock_read_begin sys/dev/pv/pvclock.c:278 [inline] pvclock_get(ffffffff838f2b00) at pvclock_get+0x53 sys/dev/pv/pvclock.c:333 nanouptime(ffff80003b0fd540) at nanouptime+0x61 tc_delta sys/kern/kern_tc.c:138 [inline] nanouptime(ffff80003b0fd540) at nanouptime+0x61 binuptime sys/kern/kern_tc.c:191 [inline] nanouptime(ffff80003b0fd540) at nanouptime+0x61 sys/kern/kern_tc.c:217 tuagg_add_runtime() at tuagg_add_runtime+0x40 sys/kern/kern_resource.c:449 mi_switch() at mi_switch+0xb1 sys/kern/sched_bsd.c:372 ast(ffff80003b0fd610) at ast+0x13d mi_ast sys/sys/syscall_mi.h:252 [inline] ast(ffff80003b0fd610) at ast+0x13d sys/arch/amd64/amd64/trap.c:747 Xsyscall() at Xsyscall+0x156 end of kernel end trace frame: 0xcc8e3bc42d0, 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(0xffffffff83963648, 0xffff800029ef5000, 0, 1) -> e ddb> trace pvclock_get(ffffffff838f2b00) at pvclock_get+0x53 pvclock_read_begin sys/dev/pv/pvclock.c:278 [inline] pvclock_get(ffffffff838f2b00) at pvclock_get+0x53 sys/dev/pv/pvclock.c:333 nanouptime(ffff80003b0fd540) at nanouptime+0x61 tc_delta sys/kern/kern_tc.c:138 [inline] nanouptime(ffff80003b0fd540) at nanouptime+0x61 binuptime sys/kern/kern_tc.c:191 [inline] nanouptime(ffff80003b0fd540) at nanouptime+0x61 sys/kern/kern_tc.c:217 tuagg_add_runtime() at tuagg_add_runtime+0x40 sys/kern/kern_resource.c:449 mi_switch() at mi_switch+0xb1 sys/kern/sched_bsd.c:372 ast(ffff80003b0fd610) at ast+0x13d mi_ast sys/sys/syscall_mi.h:252 [inline] ast(ffff80003b0fd610) at ast+0x13d sys/arch/amd64/amd64/trap.c:747 Xsyscall() at Xsyscall+0x156 end of kernel end trace frame: 0xcc8e3bc42d0, count: -6 ddb> show registers rdi 0xffff80002b8b4000 rsi 0x4a904 acpi_pdirpa+0x36775 rbp 0xffff80003b0fd4c0 rbx 0xffffffff838e5a28 th1 rdx 0xffff80002b8b4000 rcx 0x4a903 acpi_pdirpa+0x36774 rax 0xc r8 0xffff80003b0fd108 r9 0x21 r10 0x140c314b3e232ca9 r11 0x321adb4b2a7cb58d r12 0 r13 0xe16 r14 0xffffffff838f2b00 pvclock_timecounter r15 0xffff800029ef5000 rip 0xffffffff82ac13d3 pvclock_get+0x53 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80003b0fd470 ss 0x10 pvclock_get+0x53: movl 0(%r15),%r12d ddb> show proc PROC (syz-executor) tid=162070 pid=68666 tcnt=2 stat=run flags process=0 proc=4000000 runpri=86, usrpri=86, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0x0, list=0xffff8000388e5a18,0xffff8000388e42d0 process=0xffff8000ffff8918 user=0xffff80003b0f8000, vmspace=0xfffffd80715dd010 estcpu=36, cpticks=21, pctcpu=0.0, user=0, sys=21, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 29970 150148 84998 0 2 0 syz-executor 29970 81608 84998 0 3 0x4000080 fsleep syz-executor 68666 157577 51144 0 2 0 syz-executor *68666 162070 51144 0 2 0x4000000 syz-executor 43113 194354 67695 0 2 0 syz-executor 43113 401063 67695 0 2 0x4000000 syz-executor 75705 337962 68850 0 2 0 syz-executor 75705 401158 68850 0 3 0x4000080 piperd syz-executor 75705 250442 68850 0 3 0x4000080 fsleep syz-executor 47767 422414 60008 0 2 0xc80 syz-executor 47767 356143 60008 0 3 0x4000080 kqread syz-executor 47767 5753 60008 0 3 0x4000080 fsleep syz-executor 28284 87777 56365 0 2 0xc82 syz-executor 54307 83656 56365 0 2 0x2 syz-executor 68850 142768 56365 0 2 0xc82 syz-executor 88695 57594 56365 0 3 0x82 wait syz-executor 84998 244799 56365 0 2 0xc82 syz-executor 60008 347881 56365 0 2 0xc82 syz-executor 51144 341250 56365 0 2 0xc82 syz-executor 67695 55066 56365 0 2 0xc82 syz-executor 56365 130869 50921 0 3 0x82 kqread syz-executor 50921 11367 90921 0 3 0x10008a sigsusp ksh 90921 324899 57762 0 3 0x98 kqread sshd-session 57762 413352 45190 0 3 0x92 kqread sshd-session 27825 259593 1 0 3 0x100083 ttyin getty 45190 251664 1 0 3 0x88 kqread sshd 92819 170970 9494 73 3 0x1100090 kqread syslogd 9494 300754 1 0 3 0x100082 sbwait syslogd 59394 144099 1 0 3 0x100080 kqread resolvd 76410 257361 5521 77 3 0x100092 kqread dhcpleased 52200 264968 5521 77 3 0x100092 kqread dhcpleased 5521 98943 1 0 3 0x80 kqread dhcpleased 36814 142108 0 0 2 0x14200 smr 51957 254724 0 0 2 0x14200 zerothread 15453 276850 0 0 3 0x14200 aiodoned aiodoned 77829 48448 0 0 3 0x14200 syncer update 99182 60996 0 0 3 0x14200 cleaner cleaner 77445 133816 0 0 3 0x14200 reaper reaper 41632 509011 0 0 3 0x14200 pgdaemon pagedaemon 72295 420868 0 0 3 0x14200 bored viomb 15604 212780 0 0 3 0x40014200 acpi0 acpi0 31765 484172 0 0 2 0x14200 softnet0 34497 220214 0 0 3 0x14200 bored systqmp 4968 47274 0 0 3 0x14200 bored systq 35057 359919 0 0 2 0x40014200 softclock 58792 76942 0 0 3 0x40014200 idle0 1 381897 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 11041 12110K 13158K 166960K 12712 0 pcb 18 15K 16K 166960K 271 0 rtable 226 7K 7K 166960K 384 0 pf 34 13K 14K 166960K 54 0 ifaddr 44 7K 7K 166960K 57 0 ifgroup 54 2K 2K 166960K 80 0 sysctl 4 1K 9K 166960K 10 0 counters 35 18K 18K 166960K 45 0 ioctlops 0 0K 4K 166960K 289 0 iov 0 0K 16K 166960K 87 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1412 89K 89K 166960K 1733 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 9K 166960K 16 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 53 0 dirhash 12 2K 2K 166960K 18 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 17 61K 89K 166960K 513 0 sigio 0 0K 0K 166960K 73 0 proc 61 59K 83K 166960K 534 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 0 0K 0K 166960K 121 0 in_multi 99 7K 7K 166960K 110 0 ether_multi 1 0K 0K 166960K 2 0 mrt 1 0K 0K 166960K 16 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 447 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 211 142K 160K 166960K 6333 0 UVM aobj 18 2K 2K 166960K 19 0 pinsyscall 38 76K 90K 166960K 1604 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 13 0K 2K 166960K 37 0 temp 49 9069K 9149K 166960K 17031 0 kqueue 15 24K 31K 166960K 104 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 120 120 0 117 3 2 1 3 0 8 0 rtentry 136 112 0 12 4 0 4 4 0 8 0 unpcb 144 428 0 411 6 2 4 4 0 8 3 syncache 336 10 0 10 2 1 1 1 0 8 1 tcpcb 736 167 0 163 4 3 1 4 0 8 0 arp 96 18 0 0 1 0 1 1 0 8 0 ipq 40 6 0 2 1 0 1 1 0 8 0 ipqe 40 11 0 7 1 0 1 1 0 8 0 inpcb 328 697 0 689 10 6 4 7 0 8 3 ip6q 72 3 0 0 1 0 1 1 0 8 0 ip6af 40 4 0 0 1 0 1 1 0 8 0 nd6 112 24 0 0 1 0 1 1 0 8 0 pkpcb 40 3 0 3 1 1 0 1 0 8 0 kcovpl 48 8 0 0 1 0 1 1 0 8 0 ppxss 1072 8 0 6 2 1 1 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 483 0 41 31 1 30 31 0 8 0 art_table 40 484 0 41 5 0 5 5 0 8 0 art_node 32 112 0 22 1 0 1 1 0 8 0 sysvmsgpl 40 4 0 2 1 0 1 1 0 8 0 semapl 112 51 0 41 1 0 1 1 0 8 0 shmpl 112 16 0 1 1 0 1 1 0 8 0 dirhash 1024 21 0 4 3 0 3 3 0 8 0 dino2pl 256 2258 0 805 92 0 92 92 0 8 0 ffsino 256 2258 0 805 92 0 92 92 0 8 0 nchpl 144 2987 0 1289 64 0 64 64 0 8 0 rtmask 32 1 0 1 1 1 0 1 0 8 0 vnodes 216 2595 0 0 145 0 145 145 0 8 0 namei 1024 10049 0 10048 2 1 1 2 0 8 0 kstatmem 264 43 0 16 2 0 2 2 0 8 0 scsiplug 72 3 0 3 1 1 0 1 0 8 0 scxspl 216 15953 0 15953 15 7 8 8 1 8 8 plimitpl 152 178 0 162 1 0 1 1 0 8 0 sigapl 424 805 0 763 6 1 5 6 0 8 0 knotepl 120 26731 0 26456 18 9 9 11 0 8 0 kqueuepl 184 196 0 185 3 2 1 3 0 8 0 pipepl 304 139 0 111 3 0 3 3 0 8 0 fdescpl 448 792 0 763 5 1 4 5 0 8 0 filepl 120 4873 0 4651 13 4 9 13 0 8 1 lockfpl 104 135 0 132 1 0 1 1 0 8 0 lockfspl 48 57 0 54 1 0 1 1 0 8 0 sessionpl 144 107 0 98 1 0 1 1 0 8 0 pgrppl 48 116 0 99 1 0 1 1 0 8 0 ucredpl 104 525 0 513 1 0 1 1 0 8 0 zombiepl 144 765 0 763 1 0 1 1 0 8 0 processpl 1152 805 0 763 4 0 4 4 0 8 0 procpl 664 1393 0 1344 6 1 5 6 0 8 0 sosppl 176 3 0 3 1 1 0 1 0 8 0 sockpl 552 1267 0 1238 15 7 8 11 0 8 5 mcl64k 65536 57 0 56 1 0 1 1 0 8 0 mcl16k 16384 1 0 1 1 1 0 1 0 8 0 mcl8k 8192 8 0 8 1 1 0 1 0 8 0 mcl4k 4096 3000 0 2943 16 8 8 15 0 8 0 mcl2k 2048 475 0 472 2 1 1 2 0 8 0 mtagpl 96 5 0 4 1 0 1 1 0 8 0 mbufpl 256 8363 0 8175 19 0 19 19 0 8 6 bufpl 280 7764 0 1550 444 0 444 444 0 8 0 anonpl 24 163067 0 159930 53 9 44 53 0 187 9 amapchunkpl 152 21400 0 20963 43 14 29 36 0 158 10 amappl16 200 3380 0 3351 22 14 8 16 0 8 2 amappl15 192 6 0 5 1 0 1 1 0 8 0 amappl14 184 569 0 568 1 0 1 1 0 8 0 amappl13 176 113 0 103 1 0 1 1 0 8 0 amappl12 168 1033 0 1004 2 0 2 2 0 8 0 amappl11 160 2 0 2 1 1 0 1 0 8 0 amappl10 152 59 0 49 1 0 1 1 0 8 0 amappl9 144 259 0 259 1 1 0 1 0 8 0 amappl8 136 99 0 98 1 0 1 1 0 8 0 amappl7 128 142 0 129 1 0 1 1 0 8 0 amappl6 120 149 0 147 1 0 1 1 0 8 0 amappl5 112 91 0 83 1 0 1 1 0 8 0 amappl4 104 279 0 262 1 0 1 1 0 8 0 amappl3 96 3903 0 3801 4 1 3 4 0 8 0 amappl2 88 512 0 458 2 0 2 2 0 8 0 amappl1 80 11034 0 10482 16 4 12 16 0 8 0 amappl 88 5577 0 5428 5 0 5 5 0 92 0 uvmvnodes 80 117 0 0 3 0 3 3 0 8 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 128 255 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 18 0 1 1 0 1 1 0 8 0 uaddrrnd 24 792 0 763 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 792 0 763 1 0 1 1 0 8 0 vmmpekpl 168 7847 0 7811 3 0 3 3 0 8 0 vmmpepl 168 58234 0 56461 93 1 92 93 0 357 9 vmsppl 368 791 0 763 4 1 3 4 0 8 0 rwobjpl 40 19057 0 18090 13 0 13 13 0 8 0 pdppl 4096 1590 0 1526 102 36 66 78 0 8 2 pvpl 32 399941 0 391119 125 14 111 120 0 265 15 pmappl 216 791 0 763 2 0 2 2 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 381 0 57 10 0 10 10 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace pvclock_get(ffffffff838f2b00) at pvclock_get+0x53 pvclock_read_begin sys/dev/pv/pvclock.c:278 [inline] pvclock_get(ffffffff838f2b00) at pvclock_get+0x53 sys/dev/pv/pvclock.c:333 nanouptime(ffff80003b0fd540) at nanouptime+0x61 tc_delta sys/kern/kern_tc.c:138 [inline] nanouptime(ffff80003b0fd540) at nanouptime+0x61 binuptime sys/kern/kern_tc.c:191 [inline] nanouptime(ffff80003b0fd540) at nanouptime+0x61 sys/kern/kern_tc.c:217 tuagg_add_runtime() at tuagg_add_runtime+0x40 sys/kern/kern_resource.c:449 mi_switch() at mi_switch+0xb1 sys/kern/sched_bsd.c:372 ast(ffff80003b0fd610) at ast+0x13d mi_ast sys/sys/syscall_mi.h:252 [inline] ast(ffff80003b0fd610) at ast+0x13d sys/arch/amd64/amd64/trap.c:747 Xsyscall() at Xsyscall+0x156 end of kernel end trace frame: 0xcc8e3bc42d0, count: -6 ddb> machine ddbcpu 1 No such command ddb> trace pvclock_get(ffffffff838f2b00) at pvclock_get+0x53 pvclock_read_begin sys/dev/pv/pvclock.c:278 [inline] pvclock_get(ffffffff838f2b00) at pvclock_get+0x53 sys/dev/pv/pvclock.c:333 nanouptime(ffff80003b0fd540) at nanouptime+0x61 tc_delta sys/kern/kern_tc.c:138 [inline] nanouptime(ffff80003b0fd540) at nanouptime+0x61 binuptime sys/kern/kern_tc.c:191 [inline] nanouptime(ffff80003b0fd540) at nanouptime+0x61 sys/kern/kern_tc.c:217 tuagg_add_runtime() at tuagg_add_runtime+0x40 sys/kern/kern_resource.c:449 mi_switch() at mi_switch+0xb1 sys/kern/sched_bsd.c:372 ast(ffff80003b0fd610) at ast+0x13d mi_ast sys/sys/syscall_mi.h:252 [inline] ast(ffff80003b0fd610) at ast+0x13d sys/arch/amd64/amd64/trap.c:747 Xsyscall() at Xsyscall+0x156 end of kernel end trace frame: 0xcc8e3bc42d0, count: -6