uvm_fault(0xffffffff83a83b10, 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 *190974 98124 0 0 0x4000000 0 syz-executor pvclock_get(ffffffff8395ecb0) at pvclock_get+0x53 pvclock_read_begin sys/dev/pv/pvclock.c:278 [inline] pvclock_get(ffffffff8395ecb0) at pvclock_get+0x53 sys/dev/pv/pvclock.c:333 nsecuptime() at nsecuptime+0x62 tc_delta sys/kern/kern_tc.c:138 [inline] nsecuptime() at nsecuptime+0x62 binuptime sys/kern/kern_tc.c:191 [inline] nsecuptime() at nsecuptime+0x62 sys/kern/kern_tc.c:257 clockintr_dispatch(ffff80003c8e73b0) at clockintr_dispatch+0xe8 sys/kern/kern_clockintr.c:180 lapic_clockintr(0,0) at lapic_clockintr+0x43 sys/arch/amd64/amd64/lapic.c:482 Xresume_lapic_ltimer() at Xresume_lapic_ltimer+0x2a uvm_pmr_addr_RBT_COMPARE(ffffffff8374d5f0,fffffd8004059000) at uvm_pmr_addr_RBT_COMPARE+0xb sys/uvm/uvm_pmemrange.c:111 uvm_pmr_insert_addr(fffffd8004059000,fffffd80071a2580,0) at uvm_pmr_insert_addr+0x6c sys/uvm/uvm_pmemrange.c:445 uvm_pmr_remove_1strange(ffff80003c8e7668,0,0,0) at uvm_pmr_remove_1strange+0x840 uvm_pmr_insert sys/uvm/uvm_pmemrange.c:492 [inline] uvm_pmr_remove_1strange(ffff80003c8e7668,0,0,0) at uvm_pmr_remove_1strange+0x840 sys/uvm/uvm_pmemrange.c:710 uvm_pmr_freepageq(ffff80003c8e7668) at uvm_pmr_freepageq+0x1b0 sys/uvm/uvm_pmemrange.c:1388 uvm_obj_free(fffffd805f9ee868) at uvm_obj_free+0xfe sys/uvm/uvm_object.c:241 buf_dealloc_mem(fffffd805f9ee7a8) at buf_dealloc_mem+0x14e sys/kern/vfs_biomem.c:179 buf_put(fffffd805f9ee7a8) at buf_put+0x1d9 sys/kern/vfs_bio.c:123 brelse(fffffd805f9ee7a8) at brelse+0x397 sys/kern/vfs_bio.c:932 writedisklabel(d02,ffffffff82e3a5c0,ffff800000039000) at writedisklabel+0x1b8 sys/arch/amd64/amd64/disksubr.c:158 end trace frame: 0xffff80003c8e7870, count: 0 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(0xffffffff83a83b10, 0xffff800029ee5000, 0, 1) -> e ddb> trace pvclock_get(ffffffff8395ecb0) at pvclock_get+0x53 pvclock_read_begin sys/dev/pv/pvclock.c:278 [inline] pvclock_get(ffffffff8395ecb0) at pvclock_get+0x53 sys/dev/pv/pvclock.c:333 nsecuptime() at nsecuptime+0x62 tc_delta sys/kern/kern_tc.c:138 [inline] nsecuptime() at nsecuptime+0x62 binuptime sys/kern/kern_tc.c:191 [inline] nsecuptime() at nsecuptime+0x62 sys/kern/kern_tc.c:257 clockintr_dispatch(ffff80003c8e73b0) at clockintr_dispatch+0xe8 sys/kern/kern_clockintr.c:180 lapic_clockintr(0,0) at lapic_clockintr+0x43 sys/arch/amd64/amd64/lapic.c:482 Xresume_lapic_ltimer() at Xresume_lapic_ltimer+0x2a uvm_pmr_addr_RBT_COMPARE(ffffffff8374d5f0,fffffd8004059000) at uvm_pmr_addr_RBT_COMPARE+0xb sys/uvm/uvm_pmemrange.c:111 uvm_pmr_insert_addr(fffffd8004059000,fffffd80071a2580,0) at uvm_pmr_insert_addr+0x6c sys/uvm/uvm_pmemrange.c:445 uvm_pmr_remove_1strange(ffff80003c8e7668,0,0,0) at uvm_pmr_remove_1strange+0x840 uvm_pmr_insert sys/uvm/uvm_pmemrange.c:492 [inline] uvm_pmr_remove_1strange(ffff80003c8e7668,0,0,0) at uvm_pmr_remove_1strange+0x840 sys/uvm/uvm_pmemrange.c:710 uvm_pmr_freepageq(ffff80003c8e7668) at uvm_pmr_freepageq+0x1b0 sys/uvm/uvm_pmemrange.c:1388 uvm_obj_free(fffffd805f9ee868) at uvm_obj_free+0xfe sys/uvm/uvm_object.c:241 buf_dealloc_mem(fffffd805f9ee7a8) at buf_dealloc_mem+0x14e sys/kern/vfs_biomem.c:179 buf_put(fffffd805f9ee7a8) at buf_put+0x1d9 sys/kern/vfs_bio.c:123 brelse(fffffd805f9ee7a8) at brelse+0x397 sys/kern/vfs_bio.c:932 writedisklabel(d02,ffffffff82e3a5c0,ffff800000039000) at writedisklabel+0x1b8 sys/arch/amd64/amd64/disksubr.c:158 sdioctl(d01,84946467,ffff8000015c9000,3,ffff80003a4ddca8) at sdioctl+0x959 sys/scsi/sd.c:919 VOP_IOCTL(fffffd806175b540,84946467,ffff8000015c9000,3,fffffd8007ffd750,ffff80003a4ddca8) at VOP_IOCTL+0xa3 sys/kern/vfs_vops.c:264 vn_ioctl(fffffd806851a4b0,84946467,ffff8000015c9000,ffff80003a4ddca8) at vn_ioctl+0xea sys/kern/vfs_vnops.c:537 sys_ioctl(ffff80003a4ddca8,ffff80003c8e7c10,ffff80003c8e7b60) at sys_ioctl+0x660 sys/kern/sys_generic.c:-1 syscall(ffff80003c8e7c10) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c8e7c10) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x3b671e45130, count: -20 ddb> show registers rdi 0xffffffff rsi 0xd rbp 0xffff80003c8e72a0 rbx 0xa rdx 0 rcx 0 rax 0xc r8 0 r9 0 r10 0 r11 0x3df03b383267dd84 r12 0xfb8 r13 0xffffffff838da508 th1 r14 0xffffffff8395ecb0 pvclock_timecounter r15 0xffff800029ee5000 rip 0xffffffff82bf7e53 pvclock_get+0x53 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80003c8e7250 ss 0x10 pvclock_get+0x53: movl 0(%r15),%r12d ddb> show proc PROC (syz-executor) tid=190974 pid=98124 tcnt=3 stat=onproc flags process=0 proc=4000000 runpri=32, usrpri=50, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff80003a4dc7e8,0xffff8000348bf790 process=0xffff8000ffffb618 user=0xffff80003c8e2000, vmspace=0xfffffd806cadea20 estcpu=36, cpticks=0, pctcpu=0.0, user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 98124 232928 97033 0 2 0 syz-executor *98124 190974 97033 0 7 0x4000000 syz-executor 98124 513201 97033 0 3 0x4000080 fsleep syz-executor 26517 313134 99728 0 2 0 syz-executor 26517 48988 99728 0 3 0x4000080 fsleep syz-executor 26517 365931 99728 0 3 0x4000080 fsleep syz-executor 78576 283314 16148 0 2 0 syz-executor 78576 333529 16148 0 3 0x4000080 fsleep syz-executor 27141 185185 56081 60929 2 0x10 syz-executor 27141 176869 56081 60929 3 0x4000090 fsleep syz-executor 27141 298232 56081 60929 3 0x4000090 fsleep syz-executor 52988 6461 43098 -1 3 0x90 nanoslp syz-executor 52988 332404 43098 -1 3 0x4000090 kqread syz-executor 52988 485594 43098 -1 3 0x4000090 fsleep syz-executor 53057 513497 40418 0 2 0x2 syz-executor 47188 512233 89545 0 4 0x82000 syz-executor 47188 487473 89545 0 4 0x4082000 syz-executor 47188 230977 89545 0 2 0x4082000 syz-executor 47188 436533 89545 0 3 0x4002000 suspend syz-executor 92459 312064 0 0 3 0x14200 acct acct 43098 148154 40418 0 3 0x82 nanoslp syz-executor 16148 369001 40418 0 3 0x82 nanoslp syz-executor 89545 314823 40418 0 3 0x82 wait syz-executor 97033 312931 40418 0 3 0x82 nanoslp syz-executor 99728 269138 40418 0 3 0x82 nanoslp syz-executor 56081 149883 40418 0 3 0x82 nanoslp syz-executor 80899 173474 40418 0 3 0x82 nanoslp syz-executor 40418 118115 31135 0 2 0x2 syz-executor 31135 310778 1874 0 3 0x10008a sigsusp ksh 1874 322730 13254 0 3 0x98 kqread sshd-session 13254 95216 55046 0 3 0x92 kqread sshd-session 53093 398742 1 0 3 0x100083 ttyin getty 55046 428272 1 0 3 0x88 kqread sshd 99142 125196 90494 73 3 0x1100090 kqread syslogd 90494 36106 1 0 3 0x100082 sbwait syslogd 6182 518188 1 0 3 0x100080 kqread resolvd 62868 118162 91783 77 3 0x100092 kqread dhcpleased 98055 420270 91783 77 3 0x100092 kqread dhcpleased 91783 190137 1 0 3 0x80 kqread dhcpleased 48993 409323 0 0 3 0x14200 bored smr 15827 345373 0 0 2 0x14200 zerothread 27632 272534 0 0 3 0x14200 aiodoned aiodoned 1255 490688 0 0 3 0x14200 syncer update 31237 84182 0 0 3 0x14200 cleaner cleaner 28795 229499 0 0 3 0x14200 reaper reaper 49906 359372 0 0 3 0x14200 pgdaemon pagedaemon 82118 238034 0 0 3 0x14200 bored viomb 9992 291433 0 0 3 0x40014200 acpi0 acpi0 29155 45697 0 0 3 0x14200 bored softnet0 81926 464612 0 0 3 0x14200 bored systqmp 44304 21175 0 0 3 0x14200 bored systq 51724 105094 0 0 3 0x40014200 tmoslp softclock 3958 401157 0 0 3 0x40014200 idle0 1 79722 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 11066 12113K 12476K 166960K 12683 0 pcb 18 14K 15K 166960K 137 0 rtable 204 7K 8K 166960K 484 0 pf 34 14K 21K 166960K 108 0 ifaddr 34 5K 7K 166960K 64 0 ifgroup 46 2K 2K 166960K 82 0 sysctl 4 1K 9K 166960K 13 0 counters 32 17K 18K 166960K 50 0 ioctlops 1 2K 4K 166960K 241 0 iov 0 0K 12K 166960K 14 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1417 89K 90K 166960K 2080 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 9K 166960K 15 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 45 0 dirhash 12 2K 2K 166960K 24 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 17 61K 93K 166960K 696 0 sigio 0 0K 0K 166960K 14 0 proc 60 59K 83K 166960K 606 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 188 0 in_multi 73 5K 7K 166960K 140 0 ether_multi 2 0K 0K 166960K 6 0 mrt 2 0K 0K 166960K 22 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 247 1102K 1102K 166960K 247 0 exec 0 0K 1K 166960K 441 0 fusefs mount 1 32K 32K 166960K 1 0 pfkey data 0 0K 0K 166960K 33 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 227 143K 160K 166960K 7754 0 UVM aobj 23 2K 2K 166960K 23 0 pinsyscall 38 76K 95K 166960K 1868 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 35 0 NDP 10 0K 2K 166960K 43 0 temp 74 9116K 9180K 166960K 21334 0 kqueue 13 20K 30K 166960K 119 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 81 0 78 1 0 1 1 0 8 0 rtentry 136 142 0 56 4 0 4 4 0 8 0 unpcb 144 322 0 307 1 0 1 1 0 8 0 syncache 336 8 0 8 2 1 1 1 0 8 1 tcpqe 32 10 0 10 1 0 1 1 0 8 1 tcpcb 736 130 0 125 1 0 1 1 0 8 0 arp 96 22 0 8 1 0 1 1 0 8 0 ipq 40 3 0 0 1 0 1 1 0 8 0 ipqe 40 5 0 2 1 0 1 1 0 8 0 inpcb 328 527 0 516 7 0 7 7 0 8 5 ip6q 72 1 0 1 1 1 0 1 0 8 0 ip6af 40 2 0 2 1 1 0 1 0 8 0 nd6 112 32 0 15 1 0 1 1 0 8 0 pkpcb 40 6 0 6 2 1 1 1 0 8 1 kcovpl 48 10 0 2 1 0 1 1 0 8 0 ppxss 1072 12 0 12 2 1 1 1 0 8 1 pppxif 1416 1 0 1 1 1 0 1 0 8 0 pfstscr 40 7 0 2 1 0 1 1 0 8 0 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 9 0 4 1 0 1 1 0 8 0 pfrktable 1344 3 0 2 1 0 1 1 0 8 0 pfsrclim 320 8 0 8 1 0 1 1 0 8 1 pfstlim 224 2 0 2 1 1 0 1 0 8 0 pfanchor 1288 3 0 0 1 0 1 1 0 8 0 pftag 88 3 0 0 1 0 1 1 0 8 0 pfqueue 320 1 0 1 1 0 1 1 0 8 1 pfstitem 24 8 0 0 1 0 1 1 0 8 0 pfstkey 128 10 0 2 1 0 1 1 0 8 0 pfstate 384 5 0 1 1 0 1 1 0 8 0 pfrule 1360 18 0 17 1 0 1 1 0 8 0 rttmr 136 2 0 2 2 1 1 1 0 8 1 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 612 0 258 31 6 25 30 0 8 2 art_table 40 613 0 258 5 0 5 5 0 8 0 art_node 32 142 0 63 1 0 1 1 0 8 0 sysvmsgpl 40 2 0 2 1 1 0 1 0 8 0 semupl 112 2 0 2 1 0 1 1 0 8 1 semapl 64 39 0 29 1 0 1 1 0 8 0 shmpl 112 20 0 0 1 0 1 1 0 8 0 dirhash 1024 25 0 8 3 0 3 3 0 8 0 dino2pl 256 2542 0 1084 92 0 92 92 0 8 0 ffsino 256 2542 0 1084 92 0 92 92 0 8 0 nchpl 144 3458 0 1761 64 0 64 64 0 8 0 rtmask 32 6 0 6 1 0 1 1 0 8 1 vnodes 216 3164 0 0 176 0 176 176 0 8 0 namei 1024 12429 0 12428 3 2 1 2 0 8 0 kstatmem 264 43 0 22 2 0 2 2 0 8 0 scsiplug 72 5 0 5 1 0 1 1 0 8 1 scxspl 216 18268 0 18268 9 7 2 8 1 8 2 plimitpl 152 173 0 155 1 0 1 1 0 8 0 sigapl 424 994 0 951 7 1 6 6 0 8 1 knotepl 120 24042 0 23995 28 18 10 17 0 8 8 kqueuepl 184 256 0 246 4 3 1 4 0 8 0 pipepl 304 163 0 136 3 0 3 3 0 8 0 fdescpl 448 979 0 950 5 1 4 5 0 8 0 filepl 120 5574 0 5360 16 5 11 13 0 8 3 lockfpl 104 223 0 221 1 0 1 1 0 8 0 lockfspl 48 94 0 92 1 0 1 1 0 8 0 sessionpl 144 46 0 38 1 0 1 1 0 8 0 pgrppl 48 57 0 41 1 0 1 1 0 8 0 ucredpl 104 1000 0 985 1 0 1 1 0 8 0 zombiepl 144 952 0 951 2 1 1 1 0 8 0 processpl 1152 994 0 951 4 0 4 4 0 8 0 procpl 664 1783 0 1728 6 0 6 6 0 8 0 sockpl 552 1019 0 990 8 0 8 8 0 8 5 mcl64k 65536 32 0 31 1 0 1 1 0 8 0 mcl9k128 9344 1 0 1 1 0 1 1 0 8 1 mcl8k 8192 79 0 79 2 1 1 1 0 8 1 mcl4k 4096 3263 0 3207 15 6 9 14 0 8 0 mcl2k 2048 589 0 588 7 5 2 5 0 8 1 mtagpl 96 10 0 4 1 0 1 1 0 8 0 mbufpl 256 11091 0 10951 21 4 17 21 0 8 2 bufpl 280 6737 0 521 445 0 445 445 0 8 0 anonpl 24 165090 0 153413 97 9 88 88 0 186 17 amapchunkpl 152 25239 0 24713 44 14 30 33 0 158 9 amappl16 200 3534 0 3009 45 11 34 38 0 8 6 amappl15 192 2 0 2 1 1 0 1 0 8 0 amappl14 184 437 0 436 1 0 1 1 0 8 0 amappl13 176 124 0 114 1 0 1 1 0 8 0 amappl12 168 1231 0 1203 2 0 2 2 0 8 0 amappl11 160 4 0 3 1 0 1 1 0 8 0 amappl10 152 105 0 95 1 0 1 1 0 8 0 amappl9 144 266 0 266 1 1 0 1 0 8 0 amappl8 136 102 0 100 1 0 1 1 0 8 0 amappl7 128 145 0 134 1 0 1 1 0 8 0 amappl6 120 166 0 165 1 0 1 1 0 8 0 amappl5 112 97 0 89 1 0 1 1 0 8 0 amappl4 104 295 0 277 1 0 1 1 0 8 0 amappl3 96 4997 0 4882 4 0 4 4 0 8 0 amappl2 88 567 0 510 2 0 2 2 0 8 0 amappl1 80 13234 0 12687 16 1 15 15 0 8 2 amappl 88 6934 0 6767 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 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 2 1 1 1 0 8 1 dma64 64 6 0 6 1 1 0 1 0 8 0 dma32 32 8 0 8 2 1 1 1 0 8 1 dma16 16 18 0 17 1 0 1 1 0 8 0 aobjpl 72 22 0 0 1 0 1 1 0 8 0 uaddrrnd 24 979 0 950 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 979 0 950 1 0 1 1 0 8 0 vmmpekpl 168 9239 0 9199 3 0 3 3 0 8 0 vmmpepl 168 70999 0 68708 115 4 111 111 0 357 10 vmsppl 368 978 0 950 4 1 3 4 0 8 0 rwobjpl 40 22018 0 20522 18 0 18 18 0 8 1 pdppl 4096 1964 0 1900 108 42 66 80 0 8 2 pvpl 32 450498 0 433123 201 19 182 182 0 265 34 pmappl 216 978 0 950 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 392 0 71 10 0 10 10 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace pvclock_get(ffffffff8395ecb0) at pvclock_get+0x53 pvclock_read_begin sys/dev/pv/pvclock.c:278 [inline] pvclock_get(ffffffff8395ecb0) at pvclock_get+0x53 sys/dev/pv/pvclock.c:333 nsecuptime() at nsecuptime+0x62 tc_delta sys/kern/kern_tc.c:138 [inline] nsecuptime() at nsecuptime+0x62 binuptime sys/kern/kern_tc.c:191 [inline] nsecuptime() at nsecuptime+0x62 sys/kern/kern_tc.c:257 clockintr_dispatch(ffff80003c8e73b0) at clockintr_dispatch+0xe8 sys/kern/kern_clockintr.c:180 lapic_clockintr(0,0) at lapic_clockintr+0x43 sys/arch/amd64/amd64/lapic.c:482 Xresume_lapic_ltimer() at Xresume_lapic_ltimer+0x2a uvm_pmr_addr_RBT_COMPARE(ffffffff8374d5f0,fffffd8004059000) at uvm_pmr_addr_RBT_COMPARE+0xb sys/uvm/uvm_pmemrange.c:111 uvm_pmr_insert_addr(fffffd8004059000,fffffd80071a2580,0) at uvm_pmr_insert_addr+0x6c sys/uvm/uvm_pmemrange.c:445 uvm_pmr_remove_1strange(ffff80003c8e7668,0,0,0) at uvm_pmr_remove_1strange+0x840 uvm_pmr_insert sys/uvm/uvm_pmemrange.c:492 [inline] uvm_pmr_remove_1strange(ffff80003c8e7668,0,0,0) at uvm_pmr_remove_1strange+0x840 sys/uvm/uvm_pmemrange.c:710 uvm_pmr_freepageq(ffff80003c8e7668) at uvm_pmr_freepageq+0x1b0 sys/uvm/uvm_pmemrange.c:1388 uvm_obj_free(fffffd805f9ee868) at uvm_obj_free+0xfe sys/uvm/uvm_object.c:241 buf_dealloc_mem(fffffd805f9ee7a8) at buf_dealloc_mem+0x14e sys/kern/vfs_biomem.c:179 buf_put(fffffd805f9ee7a8) at buf_put+0x1d9 sys/kern/vfs_bio.c:123 brelse(fffffd805f9ee7a8) at brelse+0x397 sys/kern/vfs_bio.c:932 writedisklabel(d02,ffffffff82e3a5c0,ffff800000039000) at writedisklabel+0x1b8 sys/arch/amd64/amd64/disksubr.c:158 sdioctl(d01,84946467,ffff8000015c9000,3,ffff80003a4ddca8) at sdioctl+0x959 sys/scsi/sd.c:919 VOP_IOCTL(fffffd806175b540,84946467,ffff8000015c9000,3,fffffd8007ffd750,ffff80003a4ddca8) at VOP_IOCTL+0xa3 sys/kern/vfs_vops.c:264 vn_ioctl(fffffd806851a4b0,84946467,ffff8000015c9000,ffff80003a4ddca8) at vn_ioctl+0xea sys/kern/vfs_vnops.c:537 sys_ioctl(ffff80003a4ddca8,ffff80003c8e7c10,ffff80003c8e7b60) at sys_ioctl+0x660 sys/kern/sys_generic.c:-1 syscall(ffff80003c8e7c10) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c8e7c10) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x3b671e45130, count: -20 ddb> machine ddbcpu 1 No such command ddb> trace pvclock_get(ffffffff8395ecb0) at pvclock_get+0x53 pvclock_read_begin sys/dev/pv/pvclock.c:278 [inline] pvclock_get(ffffffff8395ecb0) at pvclock_get+0x53 sys/dev/pv/pvclock.c:333 nsecuptime() at nsecuptime+0x62 tc_delta sys/kern/kern_tc.c:138 [inline] nsecuptime() at nsecuptime+0x62 binuptime sys/kern/kern_tc.c:191 [inline] nsecuptime() at nsecuptime+0x62 sys/kern/kern_tc.c:257 clockintr_dispatch(ffff80003c8e73b0) at clockintr_dispatch+0xe8 sys/kern/kern_clockintr.c:180 lapic_clockintr(0,0) at lapic_clockintr+0x43 sys/arch/amd64/amd64/lapic.c:482 Xresume_lapic_ltimer() at Xresume_lapic_ltimer+0x2a uvm_pmr_addr_RBT_COMPARE(ffffffff8374d5f0,fffffd8004059000) at uvm_pmr_addr_RBT_COMPARE+0xb sys/uvm/uvm_pmemrange.c:111 uvm_pmr_insert_addr(fffffd8004059000,fffffd80071a2580,0) at uvm_pmr_insert_addr+0x6c sys/uvm/uvm_pmemrange.c:445 uvm_pmr_remove_1strange(ffff80003c8e7668,0,0,0) at uvm_pmr_remove_1strange+0x840 uvm_pmr_insert sys/uvm/uvm_pmemrange.c:492 [inline] uvm_pmr_remove_1strange(ffff80003c8e7668,0,0,0) at uvm_pmr_remove_1strange+0x840 sys/uvm/uvm_pmemrange.c:710 uvm_pmr_freepageq(ffff80003c8e7668) at uvm_pmr_freepageq+0x1b0 sys/uvm/uvm_pmemrange.c:1388 uvm_obj_free(fffffd805f9ee868) at uvm_obj_free+0xfe sys/uvm/uvm_object.c:241 buf_dealloc_mem(fffffd805f9ee7a8) at buf_dealloc_mem+0x14e sys/kern/vfs_biomem.c:179 buf_put(fffffd805f9ee7a8) at buf_put+0x1d9 sys/kern/vfs_bio.c:123 brelse(fffffd805f9ee7a8) at brelse+0x397 sys/kern/vfs_bio.c:932 writedisklabel(d02,ffffffff82e3a5c0,ffff800000039000) at writedisklabel+0x1b8 sys/arch/amd64/amd64/disksubr.c:158 sdioctl(d01,84946467,ffff8000015c9000,3,ffff80003a4ddca8) at sdioctl+0x959 sys/scsi/sd.c:919 VOP_IOCTL(fffffd806175b540,84946467,ffff8000015c9000,3,fffffd8007ffd750,ffff80003a4ddca8) at VOP_IOCTL+0xa3 sys/kern/vfs_vops.c:264 vn_ioctl(fffffd806851a4b0,84946467,ffff8000015c9000,ffff80003a4ddca8) at vn_ioctl+0xea sys/kern/vfs_vnops.c:537 sys_ioctl(ffff80003a4ddca8,ffff80003c8e7c10,ffff80003c8e7b60) at sys_ioctl+0x660 sys/kern/sys_generic.c:-1 syscall(ffff80003c8e7c10) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c8e7c10) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x3b671e45130, count: -20