uvm_fault(0xffffffff83ad8248, 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 *239692 8706 0 0 0x4000000 0 syz-executor pvclock_get(ffffffff838da880) at pvclock_get+0x53 pvclock_read_begin sys/dev/pv/pvclock.c:278 [inline] pvclock_get(ffffffff838da880) 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(ffff800035ccce50) 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_cmp8(1e1000,1e1000) at __sanitizer_cov_trace_cmp8+0x54 kd_curproc sys/dev/kcov.c:585 [inline] __sanitizer_cov_trace_cmp8(1e1000,1e1000) at __sanitizer_cov_trace_cmp8+0x54 sys/dev/kcov.c:212 uvm_objtree_RBT_COMPARE(ffff800035cccfc8,fffffd8007630680) at uvm_objtree_RBT_COMPARE+0x57 uvm_pagecmp sys/uvm/uvm_page.c:87 [inline] uvm_objtree_RBT_COMPARE(ffff800035cccfc8,fffffd8007630680) at uvm_objtree_RBT_COMPARE+0x57 sys/uvm/uvm_page.c:82 _rb_find(ffffffff83663a50,fffffd805f8fed98,ffff800035cccfc8) at _rb_find+0x68 sys/kern/subr_tree.c:450 uvm_pagelookup(fffffd805f8fed88,1e1000) at uvm_pagelookup+0x51 uvm_objtree_RBT_FIND sys/uvm/uvm_object.h:93 [inline] uvm_pagelookup(fffffd805f8fed88,1e1000) at uvm_pagelookup+0x51 sys/uvm/uvm_page.c:1171 buf_free_pages(fffffd805f8fecd0) at buf_free_pages+0xec sys/kern/vfs_biomem.c:-1 buf_dealloc_mem(fffffd805f8fecd0) at buf_dealloc_mem+0x14e sys/kern/vfs_biomem.c:179 buf_put(fffffd805f8fecd0) at buf_put+0x1d9 sys/kern/vfs_bio.c:119 brelse(fffffd805f8fecd0) at brelse+0x395 sys/kern/vfs_bio.c:801 writedisklabel(d02,ffffffff82ce9200,ffff800000039000) at writedisklabel+0x1b5 sys/arch/amd64/amd64/disksubr.c:158 end trace frame: 0xffff800035ccd290, 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(0xffffffff83ad8248, 0xffff800029ee5000, 0, 1) -> e ddb> trace pvclock_get(ffffffff838da880) at pvclock_get+0x53 pvclock_read_begin sys/dev/pv/pvclock.c:278 [inline] pvclock_get(ffffffff838da880) 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(ffff800035ccce50) 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_cmp8(1e1000,1e1000) at __sanitizer_cov_trace_cmp8+0x54 kd_curproc sys/dev/kcov.c:585 [inline] __sanitizer_cov_trace_cmp8(1e1000,1e1000) at __sanitizer_cov_trace_cmp8+0x54 sys/dev/kcov.c:212 uvm_objtree_RBT_COMPARE(ffff800035cccfc8,fffffd8007630680) at uvm_objtree_RBT_COMPARE+0x57 uvm_pagecmp sys/uvm/uvm_page.c:87 [inline] uvm_objtree_RBT_COMPARE(ffff800035cccfc8,fffffd8007630680) at uvm_objtree_RBT_COMPARE+0x57 sys/uvm/uvm_page.c:82 _rb_find(ffffffff83663a50,fffffd805f8fed98,ffff800035cccfc8) at _rb_find+0x68 sys/kern/subr_tree.c:450 uvm_pagelookup(fffffd805f8fed88,1e1000) at uvm_pagelookup+0x51 uvm_objtree_RBT_FIND sys/uvm/uvm_object.h:93 [inline] uvm_pagelookup(fffffd805f8fed88,1e1000) at uvm_pagelookup+0x51 sys/uvm/uvm_page.c:1171 buf_free_pages(fffffd805f8fecd0) at buf_free_pages+0xec sys/kern/vfs_biomem.c:-1 buf_dealloc_mem(fffffd805f8fecd0) at buf_dealloc_mem+0x14e sys/kern/vfs_biomem.c:179 buf_put(fffffd805f8fecd0) at buf_put+0x1d9 sys/kern/vfs_bio.c:119 brelse(fffffd805f8fecd0) at brelse+0x395 sys/kern/vfs_bio.c:801 writedisklabel(d02,ffffffff82ce9200,ffff800000039000) at writedisklabel+0x1b5 sys/arch/amd64/amd64/disksubr.c:158 sdioctl(d01,84946467,ffff8000015e2800,3,ffff80002f0b0fa8) at sdioctl+0x90a sys/scsi/sd.c:913 VOP_IOCTL(fffffd8064c43a20,84946467,ffff8000015e2800,3,fffffd8007ffd4e0,ffff80002f0b0fa8) at VOP_IOCTL+0xa3 sys/kern/vfs_vops.c:264 vn_ioctl(fffffd806d4a19e8,84946467,ffff8000015e2800,ffff80002f0b0fa8) at vn_ioctl+0xea sys/kern/vfs_vnops.c:537 sys_ioctl(ffff80002f0b0fa8,ffff800035ccd630,ffff800035ccd580) at sys_ioctl+0x660 sys/kern/sys_generic.c:-1 syscall(ffff800035ccd630) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff800035ccd630) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xc6e6e77a00, count: -20 ddb> show registers rdi 0xffffffff rsi 0xd rbp 0xffff800035cccd40 rbx 0x3 rdx 0xffff8000016977c0 rcx 0 rax 0xc r8 0 r9 0 r10 0 r11 0xa12cb9421e4792f r12 0x1744 __ALIGN_SIZE+0x744 r13 0xffffffff838fd478 th1 r14 0xffffffff838da880 pvclock_timecounter r15 0xffff800029ee5000 rip 0xffffffff81b292c3 pvclock_get+0x53 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff800035ccccf0 ss 0x10 pvclock_get+0x53: movl 0(%r15),%r12d ddb> show proc PROC (syz-executor) tid=239692 pid=8706 tcnt=2 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=0xffff80002f0b07e0,0xffffffff83ad71a0 process=0xffff80002a79e890 user=0xffff800035cc8000, vmspace=0xfffffd806cffd8b0 estcpu=36, cpticks=0, pctcpu=0.0, user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 8706 418222 19265 0 2 0 syz-executor * 8706 239692 19265 0 7 0x4000000 syz-executor 93745 235074 93524 0 2 0 syz-executor 93745 117298 93524 0 3 0x4000080 fsleep syz-executor 8131 187879 52094 0 2 0 syz-executor 8131 495592 52094 0 2 0x4000000 syz-executor 24647 23910 88002 0 2 0 syz-executor 24647 430035 88002 0 3 0x4000080 kqread syz-executor 24647 179145 88002 0 2 0x4000000 syz-executor 87292 192111 3539 0 2 0 syz-executor 87292 369291 3539 0 3 0x4000080 fsleep syz-executor 40139 240218 71425 0 2 0 syz-executor 40139 65578 71425 0 3 0x4000080 fsleep syz-executor 52094 337488 85428 0 3 0x82 nanoslp syz-executor 97821 262051 1 0 3 0x80 nanoslp init 71425 43238 85428 0 3 0x82 nanoslp syz-executor 19265 314334 85428 0 3 0x82 nanoslp syz-executor 93524 478453 85428 0 3 0x82 nanoslp syz-executor 63748 105963 85428 0 3 0x82 nanoslp syz-executor 87728 77357 85428 0 2 0x2 syz-executor 88002 22925 85428 0 3 0x82 nanoslp syz-executor 3539 394897 85428 0 3 0x82 nanoslp syz-executor 85428 95348 1 0 2 0x2 syz-executor 59635 13762 1 73 3 0x1100090 kqread syslogd 91043 105166 0 0 3 0x14200 bored smr 66001 323606 0 0 2 0x14200 zerothread 89045 176155 0 0 3 0x14200 aiodoned aiodoned 71797 383046 0 0 3 0x14200 syncer update 33016 232951 0 0 3 0x14200 cleaner cleaner 70399 520029 0 0 3 0x14200 reaper reaper 30391 343658 0 0 3 0x14200 pgdaemon pagedaemon 69773 285223 0 0 3 0x14200 bored viomb 83169 517168 0 0 3 0x40014200 acpi0 acpi0 9633 373676 0 0 3 0x14200 bored softnet0 24479 177519 0 0 3 0x14200 bored systqmp 15264 121544 0 0 3 0x14200 bored systq 8263 132361 0 0 3 0x40014200 tmoslp softclock 69701 269390 0 0 3 0x40014200 idle0 1 407926 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 11061 12133K 12853K 166960K 14336 0 pcb 17 15K 16K 166960K 219 0 rtable 150 8K 10K 166960K 690 0 pf 32 13K 93K 166960K 176 0 ifaddr 25 4K 7K 166960K 106 0 ifgroup 39 1K 2K 166960K 159 0 sysctl 4 1K 9K 166960K 15 0 counters 31 17K 18K 166960K 81 0 ioctlops 1 2K 4K 166960K 331 0 iov 0 0K 20K 166960K 48 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1412 89K 89K 166960K 2451 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 13K 166960K 42 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 152 0 dirhash 12 2K 2K 166960K 18 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 17 61K 110K 166960K 1248 0 sigio 0 0K 0K 166960K 9 0 proc 12 17K 83K 166960K 792 0 subproc 72 4K 4K 166960K 126 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 144 0 in_multi 44 3K 7K 166960K 180 0 ether_multi 1 0K 0K 166960K 4 0 mrt 0 0K 0K 166960K 27 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 235 1049K 1049K 166960K 235 0 exec 0 0K 1K 166960K 678 0 fusefs mount 1 32K 32K 166960K 1 0 pfkey data 0 0K 0K 166960K 35 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 140 71K 169K 166960K 12112 0 UVM aobj 47 2K 4K 166960K 50 0 pinsyscall 20 40K 91K 166960K 2512 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 1 0K 0K 166960K 42 0 NDP 11 0K 1K 166960K 77 0 temp 74 9120K 9184K 166960K 49422 0 kqueue 4 6K 31K 166960K 250 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 120 112 0 112 1 0 1 1 0 8 1 rtentry 136 200 0 151 4 0 4 4 0 8 1 unpcb 144 833 0 829 7 1 6 6 0 8 5 syncache 336 10 0 10 2 1 1 1 0 8 1 tcpcb 736 319 0 318 7 6 1 7 0 8 0 arp 96 34 0 25 1 0 1 1 0 8 0 ipq 40 2 0 0 1 0 1 1 0 8 0 ipqe 40 2 0 0 1 0 1 1 0 8 0 inpcb 328 1158 0 1154 12 5 7 7 0 8 6 ip6q 72 4 0 2 1 0 1 1 0 8 0 ip6af 40 8 0 4 1 0 1 1 0 8 0 nd6 112 45 0 35 1 0 1 1 0 8 0 pkpcb 40 9 0 9 1 0 1 1 0 8 1 kcovpl 48 14 0 6 1 0 1 1 0 8 0 mppekey 1024 1 0 1 1 0 1 1 0 8 1 ppxss 1072 35 0 35 2 1 1 1 0 8 1 pppxif 1416 3 0 3 2 1 1 1 0 8 1 pfstscr 40 16 0 8 1 0 1 1 0 8 0 pfosfp 40 1 0 0 1 0 1 1 0 8 0 pfosfpen 112 1 0 0 1 0 1 1 0 8 0 pfrktable 1344 13 0 12 1 0 1 1 0 8 0 pfsrclim 320 19 0 18 1 0 1 1 0 8 0 pfanchor 1288 4 0 4 1 1 0 1 0 8 0 pftag 88 12 0 6 1 0 1 1 0 8 0 pfqueue 320 1 0 1 1 1 0 1 0 8 0 pfstitem 24 9 0 2 1 0 1 1 0 8 0 pfstkey 128 16 0 8 1 0 1 1 0 8 0 pfstate 384 9 0 5 1 0 1 1 0 8 0 pfrule 1360 17 0 16 1 0 1 1 0 8 0 rttmr 136 4 0 4 1 0 1 1 0 8 1 art_heap8 4096 3 0 0 3 0 3 3 0 8 0 art_heap4 256 808 0 572 30 5 25 30 0 8 8 art_table 40 811 0 572 5 0 5 5 0 8 0 art_node 32 199 0 156 1 0 1 1 0 8 0 sysvmsgpl 40 6 0 0 1 0 1 1 0 8 0 semupl 112 1 0 1 1 1 0 1 0 8 0 semapl 72 144 0 134 1 0 1 1 0 8 0 shmpl 112 47 0 3 2 0 2 2 0 8 0 dirhash 1024 21 0 4 3 0 3 3 0 8 0 dino2pl 256 3511 0 2048 92 0 92 92 0 8 0 ffsino 256 3511 0 2048 92 0 92 92 0 8 0 nchpl 144 5303 0 3586 64 0 64 64 0 8 0 rtmask 32 7 0 7 1 0 1 1 0 8 1 vnodes 216 4226 0 0 235 0 235 235 0 8 0 namei 1024 18464 0 18464 3 2 1 2 0 8 1 pfiaddrpl 120 3 0 3 1 1 0 1 0 8 0 kstatmem 264 97 0 78 2 0 2 2 0 8 0 scsiplug 72 2 0 2 2 1 1 1 0 8 1 scxspl 216 21325 0 21325 9 7 2 8 1 8 2 plimitpl 152 280 0 269 1 0 1 1 0 8 0 sigapl 424 1529 0 1496 6 1 5 6 0 8 0 knotepl 120 82612 0 82589 38 28 10 17 0 8 8 kqueuepl 184 494 0 458 4 0 4 4 0 8 2 pipepl 304 202 0 175 3 0 3 3 0 8 0 fdescpl 448 1516 0 1496 5 1 4 5 0 8 0 filepl 120 9105 0 8895 15 1 14 14 0 8 5 lockfpl 104 632 0 630 2 0 2 2 0 8 1 lockfspl 48 228 0 226 1 0 1 1 0 8 0 sessionpl 144 82 0 79 1 0 1 1 0 8 0 pgrppl 48 114 0 103 1 0 1 1 0 8 0 ucredpl 104 1688 0 1682 1 0 1 1 0 8 0 zombiepl 144 1497 0 1496 2 1 1 1 0 8 0 processpl 1152 1529 0 1496 4 0 4 4 0 8 0 procpl 664 3020 0 2980 6 0 6 6 0 8 1 sosppl 176 5 0 5 2 1 1 1 0 8 1 sockpl 552 2204 0 2196 16 7 9 12 0 8 8 mcl64k 65536 147 0 144 1 0 1 1 0 8 0 mcl16k 16384 10 0 10 2 1 1 1 0 8 1 mcl12k 12288 2 0 2 1 1 0 1 0 8 0 mcl9k128 9344 2 0 2 2 1 1 1 0 8 1 mcl8k 8192 21 0 20 2 1 1 1 0 8 0 mcl4k 4096 3971 0 3913 14 5 9 13 0 8 1 mcl2k2 2112 1 0 1 1 0 1 1 0 8 1 mcl2k 2048 1092 0 1091 4 0 4 4 0 8 3 mtagpl 96 15 0 11 1 0 1 1 0 8 0 mbufpl 256 17183 0 17056 28 7 21 22 0 8 7 bufpl 272 7466 0 1250 415 0 415 415 0 8 0 anonpl 24 213736 0 211905 56 11 45 45 0 187 11 amapchunkpl 152 41959 0 41582 47 15 32 34 0 158 13 amappl16 200 3380 0 3358 21 7 14 15 0 8 8 amappl15 192 4 0 4 2 1 1 1 0 8 1 amappl14 184 482 0 482 1 0 1 1 0 8 1 amappl13 176 129 0 128 1 0 1 1 0 8 0 amappl12 168 1780 0 1760 2 0 2 2 0 8 0 amappl11 160 3 0 3 1 1 0 1 0 8 0 amappl10 152 61 0 59 1 0 1 1 0 8 0 amappl9 144 307 0 307 1 1 0 1 0 8 0 amappl8 136 121 0 121 1 0 1 1 0 8 1 amappl7 128 168 0 163 1 0 1 1 0 8 0 amappl6 120 208 0 206 1 0 1 1 0 8 0 amappl5 112 104 0 101 1 0 1 1 0 8 0 amappl4 104 285 0 277 1 0 1 1 0 8 0 amappl3 96 8324 0 8242 4 0 4 4 0 8 0 amappl2 88 579 0 565 2 0 2 2 0 8 0 amappl1 80 15104 0 14975 13 1 12 13 0 8 4 amappl 88 11135 0 11010 5 0 5 5 0 92 0 uvmvnodes 80 126 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 dma512 512 1 0 1 1 0 1 1 0 8 1 dma256 256 7 0 7 2 1 1 1 0 8 1 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 7 0 7 1 1 0 1 0 8 0 dma16 16 19 0 18 1 0 1 1 0 8 0 aobjpl 72 49 0 3 1 0 1 1 0 8 0 uaddrrnd 24 1516 0 1496 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1516 0 1496 1 0 1 1 0 8 0 vmmpekpl 168 12577 0 12537 3 0 3 3 0 8 0 vmmpepl 168 99904 0 98996 98 6 92 92 0 357 44 vmsppl 368 1515 0 1496 4 1 3 4 0 8 0 rwobjpl 40 26960 0 26448 14 1 13 13 0 8 0 pdppl 4096 3038 0 2992 104 54 50 78 0 8 4 pvpl 32 658235 0 653647 123 9 114 114 0 265 45 pmappl 216 1515 0 1496 2 0 2 2 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 818 0 86 22 0 22 22 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace pvclock_get(ffffffff838da880) at pvclock_get+0x53 pvclock_read_begin sys/dev/pv/pvclock.c:278 [inline] pvclock_get(ffffffff838da880) 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(ffff800035ccce50) 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_cmp8(1e1000,1e1000) at __sanitizer_cov_trace_cmp8+0x54 kd_curproc sys/dev/kcov.c:585 [inline] __sanitizer_cov_trace_cmp8(1e1000,1e1000) at __sanitizer_cov_trace_cmp8+0x54 sys/dev/kcov.c:212 uvm_objtree_RBT_COMPARE(ffff800035cccfc8,fffffd8007630680) at uvm_objtree_RBT_COMPARE+0x57 uvm_pagecmp sys/uvm/uvm_page.c:87 [inline] uvm_objtree_RBT_COMPARE(ffff800035cccfc8,fffffd8007630680) at uvm_objtree_RBT_COMPARE+0x57 sys/uvm/uvm_page.c:82 _rb_find(ffffffff83663a50,fffffd805f8fed98,ffff800035cccfc8) at _rb_find+0x68 sys/kern/subr_tree.c:450 uvm_pagelookup(fffffd805f8fed88,1e1000) at uvm_pagelookup+0x51 uvm_objtree_RBT_FIND sys/uvm/uvm_object.h:93 [inline] uvm_pagelookup(fffffd805f8fed88,1e1000) at uvm_pagelookup+0x51 sys/uvm/uvm_page.c:1171 buf_free_pages(fffffd805f8fecd0) at buf_free_pages+0xec sys/kern/vfs_biomem.c:-1 buf_dealloc_mem(fffffd805f8fecd0) at buf_dealloc_mem+0x14e sys/kern/vfs_biomem.c:179 buf_put(fffffd805f8fecd0) at buf_put+0x1d9 sys/kern/vfs_bio.c:119 brelse(fffffd805f8fecd0) at brelse+0x395 sys/kern/vfs_bio.c:801 writedisklabel(d02,ffffffff82ce9200,ffff800000039000) at writedisklabel+0x1b5 sys/arch/amd64/amd64/disksubr.c:158 sdioctl(d01,84946467,ffff8000015e2800,3,ffff80002f0b0fa8) at sdioctl+0x90a sys/scsi/sd.c:913 VOP_IOCTL(fffffd8064c43a20,84946467,ffff8000015e2800,3,fffffd8007ffd4e0,ffff80002f0b0fa8) at VOP_IOCTL+0xa3 sys/kern/vfs_vops.c:264 vn_ioctl(fffffd806d4a19e8,84946467,ffff8000015e2800,ffff80002f0b0fa8) at vn_ioctl+0xea sys/kern/vfs_vnops.c:537 sys_ioctl(ffff80002f0b0fa8,ffff800035ccd630,ffff800035ccd580) at sys_ioctl+0x660 sys/kern/sys_generic.c:-1 syscall(ffff800035ccd630) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff800035ccd630) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xc6e6e77a00, count: -20 ddb> machine ddbcpu 1 No such command ddb> trace pvclock_get(ffffffff838da880) at pvclock_get+0x53 pvclock_read_begin sys/dev/pv/pvclock.c:278 [inline] pvclock_get(ffffffff838da880) 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(ffff800035ccce50) 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_cmp8(1e1000,1e1000) at __sanitizer_cov_trace_cmp8+0x54 kd_curproc sys/dev/kcov.c:585 [inline] __sanitizer_cov_trace_cmp8(1e1000,1e1000) at __sanitizer_cov_trace_cmp8+0x54 sys/dev/kcov.c:212 uvm_objtree_RBT_COMPARE(ffff800035cccfc8,fffffd8007630680) at uvm_objtree_RBT_COMPARE+0x57 uvm_pagecmp sys/uvm/uvm_page.c:87 [inline] uvm_objtree_RBT_COMPARE(ffff800035cccfc8,fffffd8007630680) at uvm_objtree_RBT_COMPARE+0x57 sys/uvm/uvm_page.c:82 _rb_find(ffffffff83663a50,fffffd805f8fed98,ffff800035cccfc8) at _rb_find+0x68 sys/kern/subr_tree.c:450 uvm_pagelookup(fffffd805f8fed88,1e1000) at uvm_pagelookup+0x51 uvm_objtree_RBT_FIND sys/uvm/uvm_object.h:93 [inline] uvm_pagelookup(fffffd805f8fed88,1e1000) at uvm_pagelookup+0x51 sys/uvm/uvm_page.c:1171 buf_free_pages(fffffd805f8fecd0) at buf_free_pages+0xec sys/kern/vfs_biomem.c:-1 buf_dealloc_mem(fffffd805f8fecd0) at buf_dealloc_mem+0x14e sys/kern/vfs_biomem.c:179 buf_put(fffffd805f8fecd0) at buf_put+0x1d9 sys/kern/vfs_bio.c:119 brelse(fffffd805f8fecd0) at brelse+0x395 sys/kern/vfs_bio.c:801 writedisklabel(d02,ffffffff82ce9200,ffff800000039000) at writedisklabel+0x1b5 sys/arch/amd64/amd64/disksubr.c:158 sdioctl(d01,84946467,ffff8000015e2800,3,ffff80002f0b0fa8) at sdioctl+0x90a sys/scsi/sd.c:913 VOP_IOCTL(fffffd8064c43a20,84946467,ffff8000015e2800,3,fffffd8007ffd4e0,ffff80002f0b0fa8) at VOP_IOCTL+0xa3 sys/kern/vfs_vops.c:264 vn_ioctl(fffffd806d4a19e8,84946467,ffff8000015e2800,ffff80002f0b0fa8) at vn_ioctl+0xea sys/kern/vfs_vnops.c:537 sys_ioctl(ffff80002f0b0fa8,ffff800035ccd630,ffff800035ccd580) at sys_ioctl+0x660 sys/kern/sys_generic.c:-1 syscall(ffff800035ccd630) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff800035ccd630) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xc6e6e77a00, count: -20 ddb>