uvm_fault(0xffffffff83ae9ed0, 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 * 29795 30082 0 0 0x4000000 0 syz-executor pvclock_get(ffffffff8394b7a0) at pvclock_get+0x53 pvclock_read_begin sys/dev/pv/pvclock.c:278 [inline] pvclock_get(ffffffff8394b7a0) 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(ffff80003c987080) 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 __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x2a kd_curproc sys/dev/kcov.c:585 [inline] __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x2a sys/dev/kcov.c:153 _rb_find(ffffffff836e3588,fffffd80691ef650,ffff80003c9871a8) at _rb_find+0xe1 sys/kern/subr_tree.c:448 uvm_pagelookup(fffffd80691ef640,e95000) at uvm_pagelookup+0x51 uvm_objtree_RBT_FIND sys/uvm/uvm_object.h:93 [inline] uvm_pagelookup(fffffd80691ef640,e95000) at uvm_pagelookup+0x51 sys/uvm/uvm_page.c:1214 buf_free_pages(fffffd80691ef580) at buf_free_pages+0xec sys/kern/vfs_biomem.c:-1 buf_dealloc_mem(fffffd80691ef580) at buf_dealloc_mem+0x14e sys/kern/vfs_biomem.c:179 buf_put(fffffd80691ef580) at buf_put+0x1d9 sys/kern/vfs_bio.c:123 brelse(fffffd80691ef580) at brelse+0x397 sys/kern/vfs_bio.c:932 writedisklabel(d02,ffffffff8330cff0,ffff800000039000) at writedisklabel+0x1b8 sys/arch/amd64/amd64/disksubr.c:158 sdioctl(d01,84946467,ffff800001602000,3,ffff80003b4e6fc0) at sdioctl+0x959 sys/scsi/sd.c:919 end trace frame: 0xffff80003c987520, 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(0xffffffff83ae9ed0, 0xffff800029ee5000, 0, 1) -> e ddb> trace pvclock_get(ffffffff8394b7a0) at pvclock_get+0x53 pvclock_read_begin sys/dev/pv/pvclock.c:278 [inline] pvclock_get(ffffffff8394b7a0) 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(ffff80003c987080) 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 __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x2a kd_curproc sys/dev/kcov.c:585 [inline] __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x2a sys/dev/kcov.c:153 _rb_find(ffffffff836e3588,fffffd80691ef650,ffff80003c9871a8) at _rb_find+0xe1 sys/kern/subr_tree.c:448 uvm_pagelookup(fffffd80691ef640,e95000) at uvm_pagelookup+0x51 uvm_objtree_RBT_FIND sys/uvm/uvm_object.h:93 [inline] uvm_pagelookup(fffffd80691ef640,e95000) at uvm_pagelookup+0x51 sys/uvm/uvm_page.c:1214 buf_free_pages(fffffd80691ef580) at buf_free_pages+0xec sys/kern/vfs_biomem.c:-1 buf_dealloc_mem(fffffd80691ef580) at buf_dealloc_mem+0x14e sys/kern/vfs_biomem.c:179 buf_put(fffffd80691ef580) at buf_put+0x1d9 sys/kern/vfs_bio.c:123 brelse(fffffd80691ef580) at brelse+0x397 sys/kern/vfs_bio.c:932 writedisklabel(d02,ffffffff8330cff0,ffff800000039000) at writedisklabel+0x1b8 sys/arch/amd64/amd64/disksubr.c:158 sdioctl(d01,84946467,ffff800001602000,3,ffff80003b4e6fc0) at sdioctl+0x959 sys/scsi/sd.c:919 VOP_IOCTL(fffffd806944d1e0,84946467,ffff800001602000,3,fffffd8007ffd680,ffff80003b4e6fc0) at VOP_IOCTL+0xa3 sys/kern/vfs_vops.c:264 vn_ioctl(fffffd805c6c1ca8,84946467,ffff800001602000,ffff80003b4e6fc0) at vn_ioctl+0xea sys/kern/vfs_vnops.c:537 sys_ioctl(ffff80003b4e6fc0,ffff80003c987810,ffff80003c987760) at sys_ioctl+0x660 sys/kern/sys_generic.c:-1 syscall(ffff80003c987810) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c987810) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xdd3649ce800, count: -19 ddb> show registers rdi 0xffffffff rsi 0xd rbp 0xffff80003c986f70 rbx 0x3 rdx 0xffff8000015e0bc0 rcx 0 rax 0xc r8 0 r9 0 r10 0 r11 0x9cb0a8b22633cdf5 r12 0xe17 r13 0xffffffff838d1880 th0 r14 0xffffffff8394b7a0 pvclock_timecounter r15 0xffff800029ee5000 rip 0xffffffff827c3bf3 pvclock_get+0x53 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80003c986f20 ss 0x10 pvclock_get+0x53: movl 0(%r15),%r12d ddb> show proc PROC (syz-executor) tid=29795 pid=30082 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=0xffff80002f0b0548,0xffff80003b4e7798 process=0xffff80003cae8920 user=0xffff80003c982000, vmspace=0xfffffd806cac5a20 estcpu=36, cpticks=26, pctcpu=0.0, user=0, sys=26, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 91102 439820 7101 0 2 0x10 syz-executor 91102 326507 7101 0 3 0x4000090 lockf syz-executor 91102 269897 7101 0 3 0x4000090 fsleep syz-executor 89647 119538 87644 0 2 0xc80 syz-executor 89647 29828 87644 0 3 0x4000080 fsleep syz-executor 89647 499156 87644 0 3 0x4000080 kqpoll syz-executor 89647 323872 87644 0 3 0x4000080 fsleep syz-executor 30082 465919 92897 0 2 0 syz-executor *30082 29795 92897 0 7 0x4000000 syz-executor 46351 498984 83864 -1 2 0x10 syz-executor 46351 180786 83864 -1 3 0x4000090 fsleep syz-executor 290 297916 61114 0 2 0xc80 syz-executor 290 406243 61114 0 3 0x4000080 kqread syz-executor 290 208874 61114 0 3 0x4000080 fsleep syz-executor 290 189992 61114 0 3 0x4000080 fsleep syz-executor 49090 466252 0 0 3 0x14200 acct acct 87624 84714 0 0 3 0x14280 nfsidl nfsio 56206 452354 0 0 3 0x14280 nfsidl nfsio 17030 496727 0 0 3 0x14280 nfsidl nfsio 5336 113566 0 0 3 0x14280 nfsidl nfsio 97213 430479 0 0 3 0x14280 nfsidl nfsio 27900 75965 0 0 3 0x14280 nfsidl nfsio 7739 459998 0 0 3 0x14280 nfsidl nfsio 94606 142495 0 0 3 0x14280 nfsidl nfsio 38519 376003 0 0 3 0x14280 nfsidl nfsio 70884 337437 0 0 3 0x14280 nfsidl nfsio 88915 8211 0 0 3 0x14280 nfsidl nfsio 59456 239382 0 0 3 0x14280 nfsidl nfsio 13269 414681 0 0 3 0x14280 nfsidl nfsio 7182 405422 0 0 3 0x14280 nfsidl nfsio 19700 428545 0 0 3 0x14280 nfsidl nfsio 33847 128556 0 0 3 0x14280 nfsidl nfsio 36677 190751 0 0 3 0x14280 nfsidl nfsio 46636 18890 0 0 3 0x14280 nfsidl nfsio 24043 355310 0 0 3 0x14280 nfsidl nfsio 7249 103474 0 0 3 0x14280 nfsidl nfsio 70104 305451 33414 0 2 0x2 syz-executor 14039 89995 33414 0 2 0x2 syz-executor 92897 398033 33414 0 2 0xc82 syz-executor 83864 312198 33414 0 2 0xc82 syz-executor 16934 122160 33414 0 3 0x82 wait syz-executor 87644 221351 33414 0 2 0xc82 syz-executor 61114 362821 33414 0 2 0xc82 syz-executor 7101 105302 33414 0 2 0xc82 syz-executor 33414 196713 55400 0 3 0x82 kqread syz-executor 55400 31094 22089 0 3 0x10008a sigsusp ksh 22089 184481 58318 0 3 0x98 kqread sshd-session 58318 445900 15545 0 3 0x92 kqread sshd-session 32348 225256 1 0 3 0x100083 ttyin getty 15545 483952 1 0 3 0x88 kqread sshd 16875 215315 33487 73 3 0x1100090 kqread syslogd 33487 170970 1 0 3 0x100082 sbwait syslogd 38875 236854 1 0 3 0x100080 kqread resolvd 64780 42456 38943 77 3 0x100092 kqread dhcpleased 72956 188297 38943 77 3 0x100092 kqread dhcpleased 38943 243016 1 0 3 0x80 kqread dhcpleased 36539 157241 0 0 3 0x14200 bored smr 26310 46941 0 0 2 0x14200 zerothread 98608 412713 0 0 3 0x14200 aiodoned aiodoned 11423 243807 0 0 3 0x14200 syncer update 37810 220519 0 0 3 0x14200 cleaner cleaner 93466 31320 0 0 3 0x14200 reaper reaper 96271 319184 0 0 3 0x14200 pgdaemon pagedaemon 17730 239100 0 0 3 0x14200 bored viomb 757 212 0 0 3 0x40014200 acpi0 acpi0 67923 457124 0 0 3 0x14200 bored softnet0 88215 118023 0 0 3 0x14200 bored systqmp 74184 249205 0 0 3 0x14200 bored systq 90980 40340 0 0 2 0x40014200 softclock 65340 435734 0 0 3 0x40014200 idle0 1 155886 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 11051 12173K 12269K 166960K 12331 0 pcb 17 14K 15K 166960K 73 0 rtable 231 7K 8K 166960K 390 0 pf 36 14K 21K 166960K 78 0 ifaddr 40 6K 7K 166960K 55 0 ifgroup 54 2K 2K 166960K 68 0 sysctl 3 1K 9K 166960K 8 0 counters 34 17K 18K 166960K 44 0 ioctlops 1 2K 4K 166960K 168 0 iov 0 0K 12K 166960K 11 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1356 85K 86K 166960K 1587 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 20K 24K 166960K 8 0 VM map 2 1K 1K 166960K 2 0 sem 10 0K 0K 166960K 14 0 dirhash 12 2K 2K 166960K 15 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 16 57K 89K 166960K 359 0 sigio 0 0K 0K 166960K 3 0 proc 60 59K 91K 166960K 516 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 40 0 in_multi 88 6K 7K 166960K 104 0 ether_multi 1 0K 0K 166960K 1 0 mrt 0 0K 0K 166960K 13 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 396 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 218 150K 158K 166960K 4799 0 UVM aobj 7 2K 2K 166960K 9 0 pinsyscall 37 74K 94K 166960K 1437 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 1 0K 0K 166960K 16 0 NDP 12 0K 2K 166960K 36 0 temp 75 9115K 9179K 166960K 9481 0 kqueue 14 22K 30K 166960K 66 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 52 0 49 1 0 1 1 0 8 0 rtentry 136 118 0 16 4 0 4 4 0 8 0 unpcb 144 135 0 116 2 0 2 2 0 8 1 syncache 336 6 0 6 1 0 1 1 0 8 1 tcpqe 32 1 0 1 1 0 1 1 0 8 1 tcpcb 736 138 0 131 4 0 4 4 0 8 3 arp 96 18 0 2 1 0 1 1 0 8 0 ipq 40 4 0 1 1 0 1 1 0 8 0 ipqe 40 6 0 3 1 0 1 1 0 8 0 inpcb 328 471 0 460 10 1 9 10 0 8 7 nd6 112 30 0 6 1 0 1 1 0 8 0 pkpcb 40 1 0 1 1 0 1 1 0 8 1 kcovpl 48 8 0 0 1 0 1 1 0 8 0 ppxss 1072 10 0 10 1 0 1 1 0 8 1 pfstscr 40 5 0 5 1 0 1 1 0 8 1 pfanchor 1288 7 0 0 1 0 1 1 0 8 0 pftag 88 3 0 0 1 0 1 1 0 8 0 pfqueue 320 2 0 0 1 0 1 1 0 8 0 pfstitem 24 2 0 0 1 0 1 1 0 8 0 pfstkey 128 8 0 6 1 0 1 1 0 8 0 pfstate 384 4 0 3 1 0 1 1 0 8 0 pfrule 1360 3 0 3 1 0 1 1 0 8 1 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 497 0 80 31 0 31 31 0 8 2 art_table 40 498 0 80 5 0 5 5 0 8 0 art_node 32 118 0 25 1 0 1 1 0 8 0 sysvmsgpl 40 2 0 2 1 0 1 1 0 8 1 semupl 112 1 0 1 1 0 1 1 0 8 1 semapl 64 12 0 4 1 0 1 1 0 8 0 shmpl 112 6 0 2 1 0 1 1 0 8 0 dirhash 1024 19 0 2 3 0 3 3 0 8 0 dino2pl 256 1985 0 526 92 0 92 92 0 8 0 ffsino 256 1985 0 526 92 0 92 92 0 8 0 nchpl 144 2600 0 907 64 0 64 64 0 8 0 rtmask 32 2 0 2 1 0 1 1 0 8 1 vnodes 216 2227 0 0 124 0 124 124 0 8 0 namei 1024 7841 0 7839 2 0 2 2 0 8 1 kstatmem 264 39 0 14 3 0 3 3 0 8 0 scxspl 216 15319 0 15319 8 0 8 8 1 8 8 plimitpl 152 130 0 113 1 0 1 1 0 8 0 sigapl 424 669 0 607 8 0 8 8 0 8 0 knotepl 120 11584 0 11536 22 12 10 18 0 8 8 kqueuepl 184 87 0 74 1 0 1 1 0 8 0 pipepl 304 204 0 177 8 0 8 8 0 8 5 fdescpl 448 635 0 607 5 0 5 5 0 8 1 filepl 120 3249 0 3021 14 0 14 14 0 8 6 lockfpl 104 86 0 81 1 0 1 1 0 8 0 lockfspl 48 38 0 34 1 0 1 1 0 8 0 sessionpl 144 25 0 17 1 0 1 1 0 8 0 pgrppl 48 39 0 23 1 0 1 1 0 8 0 ucredpl 104 385 0 372 1 0 1 1 0 8 0 zombiepl 144 608 0 607 1 0 1 1 0 8 0 processpl 1152 669 0 607 5 0 5 5 0 8 0 procpl 664 1025 0 953 7 0 7 7 0 8 0 sosppl 176 2 0 2 1 0 1 1 0 8 1 sockpl 552 666 0 633 10 0 10 10 0 8 7 mcl64k 65536 16 0 16 1 0 1 1 0 8 1 mcl16k 16384 2 0 2 1 0 1 1 0 8 1 mcl9k128 9344 1 0 1 1 0 1 1 0 8 1 mcl8k 8192 10 0 10 1 0 1 1 0 8 1 mcl4k 4096 2829 0 2778 12 0 12 12 0 8 5 mcl2k 2048 323 0 322 1 0 1 1 0 8 0 mtagpl 96 5 0 4 1 0 1 1 0 8 0 mbufpl 256 6551 0 6374 17 0 17 17 0 8 3 bufpl 280 6171 0 105 434 0 434 434 0 8 0 anonpl 24 142693 0 139283 69 0 69 69 0 186 38 amapchunkpl 152 14894 0 14423 25 0 25 25 0 158 3 amappl16 200 3336 0 3289 32 20 12 27 0 8 7 amappl15 192 8 0 8 1 0 1 1 0 8 1 amappl14 184 408 0 407 1 0 1 1 0 8 0 amappl13 176 157 0 147 1 0 1 1 0 8 0 amappl12 168 869 0 842 2 0 2 2 0 8 0 amappl11 160 7 0 6 1 0 1 1 0 8 0 amappl10 152 57 0 47 1 0 1 1 0 8 0 amappl9 144 290 0 290 1 0 1 1 0 8 1 amappl8 136 143 0 142 1 0 1 1 0 8 0 amappl7 128 143 0 131 1 0 1 1 0 8 0 amappl6 120 153 0 150 1 0 1 1 0 8 0 amappl5 112 95 0 87 1 0 1 1 0 8 0 amappl4 104 249 0 233 1 0 1 1 0 8 0 amappl3 96 2838 0 2727 4 0 4 4 0 8 0 amappl2 88 503 0 445 2 0 2 2 0 8 0 amappl1 80 9818 0 9275 13 0 13 13 0 8 1 amappl 88 4101 0 3945 4 0 4 4 0 92 0 uvmvnodes 80 102 0 0 3 0 3 3 0 8 0 dma4096 4096 1 0 1 1 0 1 1 0 8 1 dma1024 1024 1 0 0 1 0 1 1 0 8 0 dma256 256 6 0 6 1 0 1 1 0 8 1 dma128 128 253 0 253 1 0 1 1 0 8 1 dma64 64 8 0 8 1 0 1 1 0 8 1 dma32 32 7 0 7 1 0 1 1 0 8 1 dma16 16 18 0 17 1 0 1 1 0 8 0 aobjpl 72 8 0 2 1 0 1 1 0 8 0 uaddrrnd 24 635 0 607 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 635 0 607 1 0 1 1 0 8 0 vmmpekpl 168 6886 0 6848 2 0 2 2 0 8 0 vmmpepl 168 48720 0 46954 101 0 101 101 0 357 17 vmsppl 368 634 0 607 4 0 4 4 0 8 1 rwobjpl 40 16916 0 15932 15 0 15 15 0 8 2 pdppl 4096 1276 0 1214 92 26 66 78 0 8 4 pvpl 32 327138 0 317984 148 0 148 148 0 265 57 pmappl 216 634 0 607 2 0 2 2 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 364 0 26 10 0 10 10 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace pvclock_get(ffffffff8394b7a0) at pvclock_get+0x53 pvclock_read_begin sys/dev/pv/pvclock.c:278 [inline] pvclock_get(ffffffff8394b7a0) 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(ffff80003c987080) 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 __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x2a kd_curproc sys/dev/kcov.c:585 [inline] __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x2a sys/dev/kcov.c:153 _rb_find(ffffffff836e3588,fffffd80691ef650,ffff80003c9871a8) at _rb_find+0xe1 sys/kern/subr_tree.c:448 uvm_pagelookup(fffffd80691ef640,e95000) at uvm_pagelookup+0x51 uvm_objtree_RBT_FIND sys/uvm/uvm_object.h:93 [inline] uvm_pagelookup(fffffd80691ef640,e95000) at uvm_pagelookup+0x51 sys/uvm/uvm_page.c:1214 buf_free_pages(fffffd80691ef580) at buf_free_pages+0xec sys/kern/vfs_biomem.c:-1 buf_dealloc_mem(fffffd80691ef580) at buf_dealloc_mem+0x14e sys/kern/vfs_biomem.c:179 buf_put(fffffd80691ef580) at buf_put+0x1d9 sys/kern/vfs_bio.c:123 brelse(fffffd80691ef580) at brelse+0x397 sys/kern/vfs_bio.c:932 writedisklabel(d02,ffffffff8330cff0,ffff800000039000) at writedisklabel+0x1b8 sys/arch/amd64/amd64/disksubr.c:158 sdioctl(d01,84946467,ffff800001602000,3,ffff80003b4e6fc0) at sdioctl+0x959 sys/scsi/sd.c:919 VOP_IOCTL(fffffd806944d1e0,84946467,ffff800001602000,3,fffffd8007ffd680,ffff80003b4e6fc0) at VOP_IOCTL+0xa3 sys/kern/vfs_vops.c:264 vn_ioctl(fffffd805c6c1ca8,84946467,ffff800001602000,ffff80003b4e6fc0) at vn_ioctl+0xea sys/kern/vfs_vnops.c:537 sys_ioctl(ffff80003b4e6fc0,ffff80003c987810,ffff80003c987760) at sys_ioctl+0x660 sys/kern/sys_generic.c:-1 syscall(ffff80003c987810) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c987810) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xdd3649ce800, count: -19 ddb> machine ddbcpu 1 No such command ddb> trace pvclock_get(ffffffff8394b7a0) at pvclock_get+0x53 pvclock_read_begin sys/dev/pv/pvclock.c:278 [inline] pvclock_get(ffffffff8394b7a0) 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(ffff80003c987080) 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 __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x2a kd_curproc sys/dev/kcov.c:585 [inline] __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x2a sys/dev/kcov.c:153 _rb_find(ffffffff836e3588,fffffd80691ef650,ffff80003c9871a8) at _rb_find+0xe1 sys/kern/subr_tree.c:448 uvm_pagelookup(fffffd80691ef640,e95000) at uvm_pagelookup+0x51 uvm_objtree_RBT_FIND sys/uvm/uvm_object.h:93 [inline] uvm_pagelookup(fffffd80691ef640,e95000) at uvm_pagelookup+0x51 sys/uvm/uvm_page.c:1214 buf_free_pages(fffffd80691ef580) at buf_free_pages+0xec sys/kern/vfs_biomem.c:-1 buf_dealloc_mem(fffffd80691ef580) at buf_dealloc_mem+0x14e sys/kern/vfs_biomem.c:179 buf_put(fffffd80691ef580) at buf_put+0x1d9 sys/kern/vfs_bio.c:123 brelse(fffffd80691ef580) at brelse+0x397 sys/kern/vfs_bio.c:932 writedisklabel(d02,ffffffff8330cff0,ffff800000039000) at writedisklabel+0x1b8 sys/arch/amd64/amd64/disksubr.c:158 sdioctl(d01,84946467,ffff800001602000,3,ffff80003b4e6fc0) at sdioctl+0x959 sys/scsi/sd.c:919 VOP_IOCTL(fffffd806944d1e0,84946467,ffff800001602000,3,fffffd8007ffd680,ffff80003b4e6fc0) at VOP_IOCTL+0xa3 sys/kern/vfs_vops.c:264 vn_ioctl(fffffd805c6c1ca8,84946467,ffff800001602000,ffff80003b4e6fc0) at vn_ioctl+0xea sys/kern/vfs_vnops.c:537 sys_ioctl(ffff80003b4e6fc0,ffff80003c987810,ffff80003c987760) at sys_ioctl+0x660 sys/kern/sys_generic.c:-1 syscall(ffff80003c987810) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c987810) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xdd3649ce800, count: -19