uvm_fault(0xffffffff83a79cc8, 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 *177726 86052 0 0x10 0x4000000 0 syz-executor pvclock_get(ffffffff8386c770) at pvclock_get+0x53 pvclock_read_begin sys/dev/pv/pvclock.c:278 [inline] pvclock_get(ffffffff8386c770) 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(ffff80003c927200) 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_objtree_RBT_COMPARE(ffff80003c927358,fffffd8006cdbf80) at uvm_objtree_RBT_COMPARE+0x38 uvm_pagecmp sys/uvm/uvm_page.c:87 [inline] uvm_objtree_RBT_COMPARE(ffff80003c927358,fffffd8006cdbf80) at uvm_objtree_RBT_COMPARE+0x38 sys/uvm/uvm_page.c:82 _rb_find(ffffffff837e0be8,fffffd806c9138b0,ffff80003c927358) at _rb_find+0x68 sys/kern/subr_tree.c:450 uvm_pagelookup(fffffd806c9138a0,444000) at uvm_pagelookup+0x51 uvm_objtree_RBT_FIND sys/uvm/uvm_object.h:93 [inline] uvm_pagelookup(fffffd806c9138a0,444000) at uvm_pagelookup+0x51 sys/uvm/uvm_page.c:1214 buf_free_pages(fffffd806c9137e0) at buf_free_pages+0xec sys/kern/vfs_biomem.c:-1 buf_dealloc_mem(fffffd806c9137e0) at buf_dealloc_mem+0x14e sys/kern/vfs_biomem.c:179 buf_put(fffffd806c9137e0) at buf_put+0x1d9 sys/kern/vfs_bio.c:123 brelse(fffffd806c9137e0) at brelse+0x397 sys/kern/vfs_bio.c:932 writedisklabel(d02,ffffffff81e27950,ffff800000039000) at writedisklabel+0x1b8 sys/arch/amd64/amd64/disksubr.c:158 sdioctl(d01,84946467,ffff8000015fa800,3,ffff80003c8fa2c8) at sdioctl+0x959 sys/scsi/sd.c:921 end trace frame: 0xffff80003c9276d0, 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(0xffffffff83a79cc8, 0xffff800029ef5000, 0, 1) -> e ddb> trace pvclock_get(ffffffff8386c770) at pvclock_get+0x53 pvclock_read_begin sys/dev/pv/pvclock.c:278 [inline] pvclock_get(ffffffff8386c770) 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(ffff80003c927200) 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_objtree_RBT_COMPARE(ffff80003c927358,fffffd8006cdbf80) at uvm_objtree_RBT_COMPARE+0x38 uvm_pagecmp sys/uvm/uvm_page.c:87 [inline] uvm_objtree_RBT_COMPARE(ffff80003c927358,fffffd8006cdbf80) at uvm_objtree_RBT_COMPARE+0x38 sys/uvm/uvm_page.c:82 _rb_find(ffffffff837e0be8,fffffd806c9138b0,ffff80003c927358) at _rb_find+0x68 sys/kern/subr_tree.c:450 uvm_pagelookup(fffffd806c9138a0,444000) at uvm_pagelookup+0x51 uvm_objtree_RBT_FIND sys/uvm/uvm_object.h:93 [inline] uvm_pagelookup(fffffd806c9138a0,444000) at uvm_pagelookup+0x51 sys/uvm/uvm_page.c:1214 buf_free_pages(fffffd806c9137e0) at buf_free_pages+0xec sys/kern/vfs_biomem.c:-1 buf_dealloc_mem(fffffd806c9137e0) at buf_dealloc_mem+0x14e sys/kern/vfs_biomem.c:179 buf_put(fffffd806c9137e0) at buf_put+0x1d9 sys/kern/vfs_bio.c:123 brelse(fffffd806c9137e0) at brelse+0x397 sys/kern/vfs_bio.c:932 writedisklabel(d02,ffffffff81e27950,ffff800000039000) at writedisklabel+0x1b8 sys/arch/amd64/amd64/disksubr.c:158 sdioctl(d01,84946467,ffff8000015fa800,3,ffff80003c8fa2c8) at sdioctl+0x959 sys/scsi/sd.c:921 VOP_IOCTL(fffffd80622a6c08,84946467,ffff8000015fa800,3,fffffd8007ffd3a8,ffff80003c8fa2c8) at VOP_IOCTL+0xa3 sys/kern/vfs_vops.c:264 vn_ioctl(fffffd806cc8ff18,84946467,ffff8000015fa800,ffff80003c8fa2c8) at vn_ioctl+0xea sys/kern/vfs_vnops.c:537 sys_ioctl(ffff80003c8fa2c8,ffff80003c9279c0,ffff80003c927910) at sys_ioctl+0x660 sys/kern/sys_generic.c:-1 syscall(ffff80003c9279c0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c9279c0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x2670d7f6b40, count: -19 ddb> show registers rdi 0xffffffff rsi 0xd rbp 0xffff80003c9270f0 rbx 0x3 rdx 0xffff8000015e5780 rcx 0 rax 0xc r8 0 r9 0 r10 0 r11 0x7790b92d11191f56 r12 0xf2f r13 0xffffffff83916490 th0 r14 0xffffffff8386c770 pvclock_timecounter r15 0xffff800029ef5000 rip 0xffffffff81896da3 pvclock_get+0x53 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80003c9270a0 ss 0x10 pvclock_get+0x53: movl 0(%r15),%r12d ddb> show proc PROC (syz-executor) tid=177726 pid=86052 tcnt=4 stat=onproc flags process=10 proc=4000000 runpri=32, usrpri=86, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff80003c904d20,0xffffffff83958398 process=0xffff80003c9028a0 user=0xffff80003c922000, vmspace=0xfffffd806d25d018 estcpu=36, cpticks=0, pctcpu=0.0, user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 14964 78137 17409 0 2 0xc80 syz-executor 14964 200511 17409 0 2 0x4000c80 syz-executor 14964 309360 17409 0 3 0x4000080 fsleep syz-executor 14964 122161 17409 0 3 0x4000080 fsleep syz-executor 86052 338261 46906 0 2 0x10 syz-executor 86052 402469 46906 0 3 0x4000090 lockf syz-executor 86052 448507 46906 0 3 0x4000090 lockf syz-executor *86052 177726 46906 0 7 0x4000010 syz-executor 13603 216499 29887 0 2 0xc80 syz-executor 13603 411848 29887 0 3 0x4000080 ttyin syz-executor 13603 214072 29887 0 3 0x4000080 fsleep syz-executor 97652 34696 94404 0 3 0x80 nanoslp syz-executor 97652 391147 94404 0 3 0x4000080 kqread syz-executor 65138 386698 59540 0 3 0x80 nanoslp syz-executor 65138 449243 59540 0 3 0x4000088 kqread syz-executor 65138 180245 59540 0 3 0x4000080 fsleep syz-executor 8426 2578 0 0 3 0x14200 acct acct 77755 42763 11791 0 2 0xc80 syz-executor 77755 259297 11791 0 3 0x4000080 ttyin syz-executor 77755 248558 11791 0 3 0x4000080 fsleep syz-executor 24826 509577 94768 0 3 0x3000 suspend syz-executor 24826 48205 94768 0 2 0x4081000 syz-executor 24826 88122 94768 0 3 0x4081000 inode syz-executor 82309 507145 0 0 3 0x14280 nfsidl nfsio 27897 327231 0 0 3 0x14280 nfsidl nfsio 48921 362895 0 0 3 0x14280 nfsidl nfsio 14793 104170 0 0 3 0x14280 nfsidl nfsio 86818 288704 0 0 3 0x14280 nfsidl nfsio 16211 84184 0 0 3 0x14280 nfsidl nfsio 33055 495353 0 0 3 0x14280 nfsidl nfsio 14872 259312 0 0 3 0x14280 nfsidl nfsio 94241 228131 0 0 3 0x14280 nfsidl nfsio 59586 384741 0 0 3 0x14280 nfsidl nfsio 50814 434967 0 0 3 0x14280 nfsidl nfsio 54963 162111 0 0 3 0x14280 nfsidl nfsio 47084 244634 0 0 3 0x14280 nfsidl nfsio 54555 131885 0 0 3 0x14280 nfsidl nfsio 49168 108563 0 0 3 0x14280 nfsidl nfsio 3997 52094 0 0 3 0x14280 nfsidl nfsio 68684 459512 0 0 3 0x14280 nfsidl nfsio 23542 311330 0 0 3 0x14280 nfsidl nfsio 21063 224171 0 0 3 0x14280 nfsidl nfsio 72201 11295 0 0 3 0x14280 nfsidl nfsio 83601 288190 1 0 3 0x100083 ttyin getty 59540 237719 2395 0 2 0xc82 syz-executor 46906 89803 2395 0 3 0x82 nanoslp syz-executor 25652 354892 2395 0 2 0x2 syz-executor 17409 470916 2395 0 2 0xc82 syz-executor 11791 67150 2395 0 2 0xc82 syz-executor 94768 503663 2395 0 3 0x82 nanoslp syz-executor 94404 206738 2395 0 3 0x82 nanoslp syz-executor 29887 372875 2395 0 3 0x82 nanoslp syz-executor 2395 296711 45459 0 3 0x82 kqread syz-executor 45459 380535 19771 0 3 0x10008a sigsusp ksh 19771 476459 23975 0 3 0x98 kqread sshd-session 23975 498742 58397 0 3 0x92 kqread sshd-session 58397 158560 1 0 3 0x88 kqread sshd 13384 174357 29162 73 3 0x1100090 kqread syslogd 29162 114469 1 0 3 0x100082 sbwait syslogd 78871 505166 1 0 3 0x100080 kqread resolvd 19706 97575 14048 77 3 0x100092 kqread dhcpleased 35362 149112 14048 77 3 0x100092 kqread dhcpleased 14048 375506 1 0 3 0x80 kqread dhcpleased 34355 464201 0 0 3 0x14200 bored smr 35049 414827 0 0 2 0x14200 zerothread 30070 57958 0 0 3 0x14200 aiodoned aiodoned 70776 485063 0 0 3 0x14200 syncer update 15578 176626 0 0 3 0x14200 cleaner cleaner 69142 157036 0 0 3 0x14200 reaper reaper 44157 55727 0 0 3 0x14200 pgdaemon pagedaemon 49460 89896 0 0 3 0x14200 bored viomb 81870 328459 0 0 3 0x40014200 acpi0 acpi0 84927 427993 0 0 3 0x14200 bored softnet0 83811 439274 0 0 3 0x14200 smrbar systqmp 16531 496316 0 0 3 0x14200 bored systq 8547 478032 0 0 3 0x40014200 tmoslp softclock 14732 336566 0 0 3 0x40014200 idle0 1 121610 0 0 3 0x82 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 11046 12110K 12596K 166960K 13055 0 pcb 17 18K 23K 166960K 295 0 rtable 236 15K 16K 166960K 508 0 pf 37 14K 20K 166960K 119 0 ifaddr 38 6K 8K 166960K 76 0 ifgroup 50 2K 2K 166960K 123 0 sysctl 4 1K 9K 166960K 12 0 counters 33 17K 18K 166960K 65 0 ioctlops 1 2K 4K 166960K 220 0 iov 0 0K 16K 166960K 26 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1386 87K 88K 166960K 1987 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 9K 166960K 13 0 VM map 2 1K 1K 166960K 2 0 sem 12 1K 1K 166960K 75 0 dirhash 12 2K 2K 166960K 27 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 17 61K 97K 166960K 693 0 sigio 0 0K 0K 166960K 10 0 proc 60 59K 91K 166960K 569 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 265 0 in_multi 87 6K 7K 166960K 110 0 ether_multi 1 0K 0K 166960K 3 0 mrt 2 0K 0K 166960K 19 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 121 546K 546K 166960K 121 0 exec 0 0K 1K 166960K 427 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 232 151K 169K 166960K 7994 0 UVM aobj 21 2K 2K 166960K 21 0 pinsyscall 38 76K 96K 166960K 1778 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 41 0 NDP 11 0K 2K 166960K 51 0 temp 57 9071K 9135K 166960K 30787 0 kqueue 16 26K 30K 166960K 133 0 SYN cache 2 16K 24K 166960K 3 0 ddb> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle rtpcb 120 130 0 127 3 0 3 3 0 8 2 rtentry 136 130 0 29 5 0 5 5 0 8 0 unpcb 144 449 0 431 4 0 4 4 0 8 3 syncache 336 7 0 7 1 0 1 1 0 8 1 tcpcb 736 223 0 217 7 0 7 7 0 8 5 arp 96 19 0 5 1 0 1 1 0 8 0 ipq 40 5 0 0 1 0 1 1 0 8 0 ipqe 40 7 0 1 1 0 1 1 0 8 0 inpcb 328 845 0 835 23 0 23 23 0 8 21 ip6q 72 1 0 0 1 0 1 1 0 8 0 nd6 112 34 0 8 1 0 1 1 0 8 0 pkpcb 40 5 0 5 1 0 1 1 0 8 1 kcovpl 48 8 0 0 1 0 1 1 0 8 0 ppxss 1072 23 0 23 1 0 1 1 0 8 1 pppxif 1416 5 0 5 1 0 1 1 0 8 1 pfstscr 40 13 0 11 1 0 1 1 0 8 0 pfrktable 1344 2 0 2 1 0 1 1 0 8 1 pfsrclim 320 1 0 0 1 0 1 1 0 8 0 pfanchor 1288 2 0 0 1 0 1 1 0 8 0 pftag 88 5 0 1 1 0 1 1 0 8 0 pfstitem 24 2 0 0 1 0 1 1 0 8 0 pfstkey 128 14 0 12 1 0 1 1 0 8 0 pfstate 384 7 0 6 1 0 1 1 0 8 0 pfrule 1360 9 0 8 1 0 1 1 0 8 0 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 529 0 94 30 0 30 30 0 8 1 art_table 40 531 0 94 5 0 5 5 0 8 0 art_node 32 129 0 36 1 0 1 1 0 8 0 sysvmsgpl 40 8 0 4 1 0 1 1 0 8 0 semupl 112 1 0 1 1 0 1 1 0 8 1 semapl 112 69 0 59 1 0 1 1 0 8 0 shmpl 112 18 0 0 1 0 1 1 0 8 0 dirhash 1024 27 0 10 3 0 3 3 0 8 0 dino2pl 256 2731 0 1278 92 0 92 92 0 8 0 ffsino 256 2731 0 1278 92 0 92 92 0 8 0 nchpl 144 3732 0 2037 64 0 64 64 0 8 0 rtmask 32 2 0 2 1 0 1 1 0 8 1 vnodes 216 3171 0 0 177 0 177 177 0 8 0 namei 1024 12264 0 12264 2 0 2 2 0 8 2 kstatmem 264 71 0 48 3 0 3 3 0 8 1 scsiplug 72 7 0 7 1 0 1 1 0 8 1 scxspl 216 16724 0 16724 3 0 3 3 1 8 3 plimitpl 152 109 0 90 1 0 1 1 0 8 0 sigapl 424 1005 0 942 8 0 8 8 0 8 0 knotepl 120 38801 0 38736 35 25 10 28 0 8 8 kqueuepl 184 272 0 258 3 0 3 3 0 8 2 pipepl 304 194 0 166 3 0 3 3 0 8 0 fdescpl 448 971 0 942 5 0 5 5 0 8 1 filepl 120 5934 0 5703 16 0 16 16 0 8 4 lockfpl 104 241 0 234 1 0 1 1 0 8 0 lockfspl 48 109 0 105 1 0 1 1 0 8 0 sessionpl 144 40 0 31 1 0 1 1 0 8 0 pgrppl 48 52 0 35 1 0 1 1 0 8 0 ucredpl 104 1087 0 1075 1 0 1 1 0 8 0 zombiepl 144 943 0 942 1 0 1 1 0 8 0 processpl 1152 1005 0 942 5 0 5 5 0 8 0 procpl 664 1836 0 1758 7 0 7 7 0 8 0 sosppl 176 1 0 1 1 0 1 1 0 8 1 sockpl 552 1446 0 1415 22 0 22 22 0 8 17 mcl64k 65536 112 0 111 1 0 1 1 0 8 0 mcl16k 16384 3 0 3 1 0 1 1 0 8 1 mcl8k 8192 14 0 14 1 0 1 1 0 8 1 mcl4k 4096 3287 0 3233 14 0 14 14 0 8 6 mcl2k 2048 589 0 586 3 0 3 3 0 8 2 mtagpl 96 17 0 8 1 0 1 1 0 8 0 mbufpl 256 10463 0 10247 21 0 21 21 0 8 7 bufpl 280 6265 0 108 440 0 440 440 0 8 0 anonpl 24 151059 0 145392 55 0 55 55 0 187 20 amapchunkpl 152 37959 0 37463 33 0 33 33 0 158 13 amappl16 200 2652 0 2473 24 12 12 20 0 8 2 amappl15 192 5 0 5 1 0 1 1 0 8 1 amappl14 184 439 0 438 1 0 1 1 0 8 0 amappl13 176 125 0 115 1 0 1 1 0 8 0 amappl12 168 1203 0 1175 2 0 2 2 0 8 0 amappl11 160 5 0 5 1 0 1 1 0 8 1 amappl10 152 64 0 53 1 0 1 1 0 8 0 amappl9 144 268 0 268 1 0 1 1 0 8 1 amappl8 136 98 0 96 1 0 1 1 0 8 0 amappl7 128 144 0 132 1 0 1 1 0 8 0 amappl6 120 151 0 149 1 0 1 1 0 8 0 amappl5 112 87 0 79 1 0 1 1 0 8 0 amappl4 104 254 0 236 1 0 1 1 0 8 0 amappl3 96 5029 0 4917 4 0 4 4 0 8 0 amappl2 88 503 0 448 2 0 2 2 0 8 0 amappl1 80 11345 0 10789 13 0 13 13 0 8 1 amappl 88 7191 0 7022 5 0 5 5 0 92 0 uvmvnodes 80 130 0 0 3 0 3 3 0 8 0 dma4096 4096 1 0 1 1 0 1 1 0 8 1 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 9 0 9 1 0 1 1 0 8 1 dma128 128 258 0 258 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 20 0 19 1 0 1 1 0 8 0 aobjpl 72 20 0 0 1 0 1 1 0 8 0 uaddrrnd 24 971 0 942 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 971 0 942 1 0 1 1 0 8 0 vmmpekpl 168 9053 0 9022 2 0 2 2 0 8 0 vmmpepl 168 66684 0 64719 96 0 96 96 0 357 8 vmsppl 368 970 0 942 4 0 4 4 0 8 1 rwobjpl 40 19623 0 18457 14 0 14 14 0 8 1 pdppl 4096 1948 0 1884 96 30 66 82 0 8 2 pvpl 32 422813 0 411695 130 0 130 130 0 265 19 pmappl 216 970 0 942 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 380 0 30 10 0 10 10 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace pvclock_get(ffffffff8386c770) at pvclock_get+0x53 pvclock_read_begin sys/dev/pv/pvclock.c:278 [inline] pvclock_get(ffffffff8386c770) 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(ffff80003c927200) 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_objtree_RBT_COMPARE(ffff80003c927358,fffffd8006cdbf80) at uvm_objtree_RBT_COMPARE+0x38 uvm_pagecmp sys/uvm/uvm_page.c:87 [inline] uvm_objtree_RBT_COMPARE(ffff80003c927358,fffffd8006cdbf80) at uvm_objtree_RBT_COMPARE+0x38 sys/uvm/uvm_page.c:82 _rb_find(ffffffff837e0be8,fffffd806c9138b0,ffff80003c927358) at _rb_find+0x68 sys/kern/subr_tree.c:450 uvm_pagelookup(fffffd806c9138a0,444000) at uvm_pagelookup+0x51 uvm_objtree_RBT_FIND sys/uvm/uvm_object.h:93 [inline] uvm_pagelookup(fffffd806c9138a0,444000) at uvm_pagelookup+0x51 sys/uvm/uvm_page.c:1214 buf_free_pages(fffffd806c9137e0) at buf_free_pages+0xec sys/kern/vfs_biomem.c:-1 buf_dealloc_mem(fffffd806c9137e0) at buf_dealloc_mem+0x14e sys/kern/vfs_biomem.c:179 buf_put(fffffd806c9137e0) at buf_put+0x1d9 sys/kern/vfs_bio.c:123 brelse(fffffd806c9137e0) at brelse+0x397 sys/kern/vfs_bio.c:932 writedisklabel(d02,ffffffff81e27950,ffff800000039000) at writedisklabel+0x1b8 sys/arch/amd64/amd64/disksubr.c:158 sdioctl(d01,84946467,ffff8000015fa800,3,ffff80003c8fa2c8) at sdioctl+0x959 sys/scsi/sd.c:921 VOP_IOCTL(fffffd80622a6c08,84946467,ffff8000015fa800,3,fffffd8007ffd3a8,ffff80003c8fa2c8) at VOP_IOCTL+0xa3 sys/kern/vfs_vops.c:264 vn_ioctl(fffffd806cc8ff18,84946467,ffff8000015fa800,ffff80003c8fa2c8) at vn_ioctl+0xea sys/kern/vfs_vnops.c:537 sys_ioctl(ffff80003c8fa2c8,ffff80003c9279c0,ffff80003c927910) at sys_ioctl+0x660 sys/kern/sys_generic.c:-1 syscall(ffff80003c9279c0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c9279c0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x2670d7f6b40, count: -19 ddb> machine ddbcpu 1 No such command ddb> trace pvclock_get(ffffffff8386c770) at pvclock_get+0x53 pvclock_read_begin sys/dev/pv/pvclock.c:278 [inline] pvclock_get(ffffffff8386c770) 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(ffff80003c927200) 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_objtree_RBT_COMPARE(ffff80003c927358,fffffd8006cdbf80) at uvm_objtree_RBT_COMPARE+0x38 uvm_pagecmp sys/uvm/uvm_page.c:87 [inline] uvm_objtree_RBT_COMPARE(ffff80003c927358,fffffd8006cdbf80) at uvm_objtree_RBT_COMPARE+0x38 sys/uvm/uvm_page.c:82 _rb_find(ffffffff837e0be8,fffffd806c9138b0,ffff80003c927358) at _rb_find+0x68 sys/kern/subr_tree.c:450 uvm_pagelookup(fffffd806c9138a0,444000) at uvm_pagelookup+0x51 uvm_objtree_RBT_FIND sys/uvm/uvm_object.h:93 [inline] uvm_pagelookup(fffffd806c9138a0,444000) at uvm_pagelookup+0x51 sys/uvm/uvm_page.c:1214 buf_free_pages(fffffd806c9137e0) at buf_free_pages+0xec sys/kern/vfs_biomem.c:-1 buf_dealloc_mem(fffffd806c9137e0) at buf_dealloc_mem+0x14e sys/kern/vfs_biomem.c:179 buf_put(fffffd806c9137e0) at buf_put+0x1d9 sys/kern/vfs_bio.c:123 brelse(fffffd806c9137e0) at brelse+0x397 sys/kern/vfs_bio.c:932 writedisklabel(d02,ffffffff81e27950,ffff800000039000) at writedisklabel+0x1b8 sys/arch/amd64/amd64/disksubr.c:158 sdioctl(d01,84946467,ffff8000015fa800,3,ffff80003c8fa2c8) at sdioctl+0x959 sys/scsi/sd.c:921 VOP_IOCTL(fffffd80622a6c08,84946467,ffff8000015fa800,3,fffffd8007ffd3a8,ffff80003c8fa2c8) at VOP_IOCTL+0xa3 sys/kern/vfs_vops.c:264 vn_ioctl(fffffd806cc8ff18,84946467,ffff8000015fa800,ffff80003c8fa2c8) at vn_ioctl+0xea sys/kern/vfs_vnops.c:537 sys_ioctl(ffff80003c8fa2c8,ffff80003c9279c0,ffff80003c927910) at sys_ioctl+0x660 sys/kern/sys_generic.c:-1 syscall(ffff80003c9279c0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c9279c0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x2670d7f6b40, count: -19