uvm_fault(0xffffffff839d4af0, 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 *181188 35490 0 0 0x4000000 0 syz-executor pvclock_get(ffffffff83886df0) at pvclock_get+0x53 pvclock_read_begin sys/dev/pv/pvclock.c:278 [inline] pvclock_get(ffffffff83886df0) 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(ffff80003ace55f0) 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(10,ffff80003ace56a0) at __sanitizer_cov_trace_cmp8+0x1c kd_curproc sys/dev/kcov.c:580 [inline] __sanitizer_cov_trace_cmp8(10,ffff80003ace56a0) at __sanitizer_cov_trace_cmp8+0x1c sys/dev/kcov.c:212 uvm_pmr_size_RBT_COMPARE(fffffd8006ee0080,fffffd8006e8e000) at uvm_pmr_size_RBT_COMPARE+0x5b uvm_pmr_size_cmp sys/uvm/uvm_pmemrange.c:249 [inline] uvm_pmr_size_RBT_COMPARE(fffffd8006ee0080,fffffd8006e8e000) at uvm_pmr_size_RBT_COMPARE+0x5b sys/uvm/uvm_pmemrange.c:112 _rb_insert(ffffffff836c4cf0,fffffd8003fdc008,fffffd8006ee0080) at _rb_insert+0x7b sys/kern/subr_tree.c:414 uvm_pmr_remove_1strange(ffff80003ace5888,0,0,0) at uvm_pmr_remove_1strange+0x8db sys/uvm/uvm_pmemrange.h:-1 uvm_pmr_freepageq(ffff80003ace5888) at uvm_pmr_freepageq+0x1b0 sys/uvm/uvm_pmemrange.c:1388 uvm_obj_free(fffffd806717c418) at uvm_obj_free+0xfe sys/uvm/uvm_object.c:241 buf_dealloc_mem(fffffd806717c358) at buf_dealloc_mem+0x14e sys/kern/vfs_biomem.c:179 buf_put(fffffd806717c358) at buf_put+0x1d9 sys/kern/vfs_bio.c:123 brelse(fffffd806717c358) at brelse+0x397 sys/kern/vfs_bio.c:932 end trace frame: 0xffff80003ace59f0, 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(0xffffffff839d4af0, 0xffff800029ef5000, 0, 1) -> e ddb> trace pvclock_get(ffffffff83886df0) at pvclock_get+0x53 pvclock_read_begin sys/dev/pv/pvclock.c:278 [inline] pvclock_get(ffffffff83886df0) 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(ffff80003ace55f0) 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(10,ffff80003ace56a0) at __sanitizer_cov_trace_cmp8+0x1c kd_curproc sys/dev/kcov.c:580 [inline] __sanitizer_cov_trace_cmp8(10,ffff80003ace56a0) at __sanitizer_cov_trace_cmp8+0x1c sys/dev/kcov.c:212 uvm_pmr_size_RBT_COMPARE(fffffd8006ee0080,fffffd8006e8e000) at uvm_pmr_size_RBT_COMPARE+0x5b uvm_pmr_size_cmp sys/uvm/uvm_pmemrange.c:249 [inline] uvm_pmr_size_RBT_COMPARE(fffffd8006ee0080,fffffd8006e8e000) at uvm_pmr_size_RBT_COMPARE+0x5b sys/uvm/uvm_pmemrange.c:112 _rb_insert(ffffffff836c4cf0,fffffd8003fdc008,fffffd8006ee0080) at _rb_insert+0x7b sys/kern/subr_tree.c:414 uvm_pmr_remove_1strange(ffff80003ace5888,0,0,0) at uvm_pmr_remove_1strange+0x8db sys/uvm/uvm_pmemrange.h:-1 uvm_pmr_freepageq(ffff80003ace5888) at uvm_pmr_freepageq+0x1b0 sys/uvm/uvm_pmemrange.c:1388 uvm_obj_free(fffffd806717c418) at uvm_obj_free+0xfe sys/uvm/uvm_object.c:241 buf_dealloc_mem(fffffd806717c358) at buf_dealloc_mem+0x14e sys/kern/vfs_biomem.c:179 buf_put(fffffd806717c358) at buf_put+0x1d9 sys/kern/vfs_bio.c:123 brelse(fffffd806717c358) at brelse+0x397 sys/kern/vfs_bio.c:932 writedisklabel(d02,ffffffff817ef6c0,ffff800000039000) at writedisklabel+0x1b8 sys/arch/amd64/amd64/disksubr.c:158 sdioctl(d02,84946467,ffff800001700000,3,ffff80002f8c0018) at sdioctl+0x959 sys/scsi/sd.c:921 VOP_IOCTL(fffffd8065a21eb8,84946467,ffff800001700000,3,fffffd8007ffd7b8,ffff80002f8c0018) at VOP_IOCTL+0xa3 sys/kern/vfs_vops.c:264 vn_ioctl(fffffd806ce1a4c8,84946467,ffff800001700000,ffff80002f8c0018) at vn_ioctl+0xea sys/kern/vfs_vnops.c:537 sys_ioctl(ffff80002f8c0018,ffff80003ace5e30,ffff80003ace5d80) at sys_ioctl+0x660 sys/kern/sys_generic.c:-1 syscall(ffff80003ace5e30) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003ace5e30) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x5cf19342800, count: -21 ddb> show registers rdi 0xffffffff rsi 0xd rbp 0xffff80003ace54e0 rbx 0xa rdx 0xffff80000007df40 rcx 0 rax 0xc r8 0 r9 0 r10 0 r11 0x34408700bc390b45 r12 0xfe5 r13 0xffffffff838fd3d0 th0 r14 0xffffffff83886df0 pvclock_timecounter r15 0xffff800029ef5000 rip 0xffffffff81d9dbb3 pvclock_get+0x53 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80003ace5490 ss 0x10 pvclock_get+0x53: movl 0(%r15),%r12d ddb> show proc PROC (syz-executor) tid=181188 pid=35490 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=0xffff80002f8c0d10,0xffffffff83991910 process=0xffff8000ffffa898 user=0xffff80003ace0000, vmspace=0xfffffd806cb2b740 estcpu=36, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 83025 94729 98474 0 2 0x40 syz-executor 35490 469096 35892 0 2 0 syz-executor *35490 181188 35892 0 7 0x4000000 syz-executor 71829 56996 15018 0 2 0 syz-executor 71829 297119 15018 0 2 0x4000000 syz-executor 31021 482640 98881 0 2 0 syz-executor 31021 205736 98881 0 2 0x4000000 syz-executor 82535 483587 3765 0 3 0x80 nanoslp syz-executor 82535 433237 3765 0 3 0x4000080 lockf syz-executor 88735 394284 62063 0 3 0x80 nanoslp syz-executor 88735 52733 62063 0 3 0x4000080 kqread syz-executor 88735 145893 62063 0 3 0x4000080 fsleep syz-executor 98474 268771 84669 0 3 0x82 ppwait syz-executor 98881 236301 84669 0 3 0x82 nanoslp syz-executor 3765 389099 84669 0 3 0x82 nanoslp syz-executor 15018 231472 84669 0 2 0xc82 syz-executor 62063 234488 84669 0 3 0x82 nanoslp syz-executor 35892 159087 84669 0 3 0x82 nanoslp syz-executor 8162 178866 84669 0 2 0x10000c82 syz-executor 50154 462985 84669 0 3 0x82 nanoslp syz-executor 84669 10729 85471 0 3 0x82 kqread syz-executor 85471 198145 26113 0 3 0x10008a sigsusp ksh 26113 345490 23472 0 3 0x98 kqread sshd-session 23472 134712 82917 0 3 0x92 kqread sshd-session 14196 52080 1 0 3 0x100083 ttyin getty 82917 21854 1 0 3 0x88 kqread sshd 79654 506652 26102 73 3 0x1100090 kqread syslogd 26102 240134 1 0 3 0x100082 sbwait syslogd 41046 169977 1 0 3 0x100080 kqread resolvd 77767 56978 91173 77 3 0x100092 kqread dhcpleased 37566 347464 91173 77 3 0x100092 kqread dhcpleased 91173 319277 1 0 3 0x80 kqread dhcpleased 60629 142542 0 0 3 0x14200 bored smr 28678 406775 0 0 2 0x14200 zerothread 75399 188963 0 0 3 0x14200 aiodoned aiodoned 32020 371282 0 0 3 0x14200 syncer update 1446 435871 0 0 3 0x14200 cleaner cleaner 23675 59043 0 0 3 0x14200 reaper reaper 70021 71102 0 0 3 0x14200 pgdaemon pagedaemon 15596 150136 0 0 3 0x14200 bored viomb 55200 166548 0 0 3 0x40014200 acpi0 acpi0 74535 348643 0 0 3 0x14200 bored softnet0 32701 351558 0 0 3 0x14200 smrbar systqmp 3556 463774 0 0 3 0x14200 bored systq 47337 346520 0 0 3 0x40014200 tmoslp softclock 50051 397241 0 0 3 0x40014200 idle0 1 309912 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 11065 12111K 12432K 166960K 12705 0 pcb 17 18K 20K 166960K 193 0 rtable 257 9K 9K 166960K 682 0 pf 34 13K 93K 166960K 110 0 ifaddr 43 7K 8K 166960K 108 0 ifgroup 52 2K 2K 166960K 155 0 sysctl 4 1K 9K 166960K 9 0 counters 35 18K 18K 166960K 76 0 ioctlops 1 2K 4K 166960K 164 0 iov 0 0K 16K 166960K 22 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1353 85K 85K 166960K 1746 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 5K 166960K 6 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 18 0 dirhash 12 2K 2K 166960K 18 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 17 61K 97K 166960K 628 0 sigio 0 0K 0K 166960K 6 0 proc 60 59K 124K 166960K 764 0 subproc 72 4K 4K 166960K 153 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 61 0 in_multi 99 7K 7K 166960K 221 0 ether_multi 1 0K 0K 166960K 2 0 mrt 0 0K 0K 166960K 18 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 575 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 213 151K 178K 166960K 6926 0 UVM aobj 6 2K 2K 166960K 7 0 pinsyscall 38 76K 96K 166960K 1978 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 14 0 NDP 14 0K 2K 166960K 75 0 temp 44 9068K 9132K 166960K 27921 0 kqueue 14 22K 31K 166960K 118 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 78 0 75 1 0 1 1 0 8 0 rtentry 136 217 0 106 4 0 4 4 0 8 0 unpcb 144 205 0 190 2 1 1 2 0 8 0 syncache 336 7 0 7 1 1 0 1 0 8 0 tcpqe 32 3 0 3 1 1 0 1 0 8 0 tcpcb 736 170 0 162 4 3 1 4 0 8 0 arp 96 37 0 18 1 0 1 1 0 8 0 ipq 40 1 0 0 1 0 1 1 0 8 0 ipqe 40 1 0 0 1 0 1 1 0 8 0 inpcb 328 663 0 652 18 11 7 13 0 8 5 ip6q 72 3 0 1 1 0 1 1 0 8 0 ip6af 40 3 0 2 1 0 1 1 0 8 0 nd6 112 52 0 29 1 0 1 1 0 8 0 pkpcb 40 1 0 1 1 1 0 1 0 8 0 kcovpl 48 17 0 9 1 0 1 1 0 8 0 mppekey 1024 2 0 2 1 1 0 1 0 8 0 ppxss 1072 24 0 22 2 1 1 1 0 8 0 pppxif 1416 4 0 4 1 1 0 1 0 8 0 pfsrclim 320 2 0 2 1 1 0 1 0 8 0 pftag 88 1 0 0 1 0 1 1 0 8 0 pfqueue 320 1 0 0 1 0 1 1 0 8 0 pfstitem 24 2 0 0 1 0 1 1 0 8 0 pfstkey 128 2 0 0 1 0 1 1 0 8 0 pfstate 384 1 0 0 1 0 1 1 0 8 0 pfrule 1360 4 0 4 1 1 0 1 0 8 0 rttmr 136 1 0 1 1 1 0 1 0 8 0 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 927 0 466 32 3 29 32 0 8 0 art_table 40 929 0 466 6 1 5 6 0 8 0 art_node 32 217 0 116 1 0 1 1 0 8 0 sysvmsgpl 40 69 0 69 2 1 1 1 0 8 1 semupl 112 1 0 1 1 1 0 1 0 8 0 semapl 112 16 0 6 1 0 1 1 0 8 0 shmpl 112 4 0 1 1 0 1 1 0 8 0 dirhash 1024 21 0 4 3 0 3 3 0 8 0 dino2pl 256 2197 0 727 92 0 92 92 0 8 0 ffsino 256 2197 0 727 92 0 92 92 0 8 0 nchpl 144 2877 0 1156 64 0 64 64 0 8 0 rtmask 32 3 0 3 1 1 0 1 0 8 0 vnodes 216 2557 0 0 143 0 143 143 0 8 0 namei 1024 10318 0 10317 3 2 1 2 0 8 0 kstatmem 264 82 0 58 2 0 2 2 0 8 0 scsiplug 72 2 0 2 1 1 0 1 0 8 0 scxspl 216 14569 0 14569 8 7 1 8 1 8 1 plimitpl 152 201 0 185 1 0 1 1 0 8 0 sigapl 424 909 0 866 6 1 5 6 0 8 0 knotepl 120 56024 0 55976 10 7 3 10 0 8 1 kqueuepl 184 141 0 131 1 0 1 1 0 8 0 pipepl 304 199 0 172 5 2 3 5 0 8 0 fdescpl 448 896 0 867 5 1 4 5 0 8 0 filepl 120 4608 0 4398 14 3 11 11 0 8 2 lockfpl 104 248 0 244 2 0 2 2 0 8 0 lockfspl 48 54 0 51 1 0 1 1 0 8 0 sessionpl 144 44 0 36 1 0 1 1 0 8 0 pgrppl 48 64 0 48 1 0 1 1 0 8 0 ucredpl 104 543 0 532 1 0 1 1 0 8 0 zombiepl 144 868 0 866 1 0 1 1 0 8 0 processpl 1152 909 0 866 4 0 4 4 0 8 0 procpl 664 1427 0 1378 6 1 5 6 0 8 0 sosppl 176 4 0 4 2 1 1 1 0 8 1 sockpl 552 991 0 962 16 9 7 12 0 8 4 mcl64k 65536 93 0 93 2 1 1 1 0 8 1 mcl16k 16384 3 0 3 1 1 0 1 0 8 0 mcl12k 12288 2 0 2 1 1 0 1 0 8 0 mcl8k 8192 23 0 23 2 1 1 1 0 8 1 mcl4k 4096 3045 0 2993 15 6 9 15 0 8 1 mcl2k 2048 553 0 551 3 2 1 3 0 8 0 mtagpl 96 6 0 4 1 0 1 1 0 8 0 mbufpl 256 9527 0 9369 16 1 15 16 0 8 0 bufpl 280 6309 0 104 444 0 444 444 0 8 0 anonpl 24 152780 0 148087 61 6 55 56 0 187 14 amapchunkpl 152 21914 0 21415 34 11 23 33 0 158 2 amappl16 200 2203 0 2154 16 1 15 16 0 8 11 amappl15 192 8 0 7 1 0 1 1 0 8 0 amappl14 184 520 0 518 1 0 1 1 0 8 0 amappl13 176 137 0 126 1 0 1 1 0 8 0 amappl12 168 1169 0 1142 2 0 2 2 0 8 0 amappl11 160 5 0 5 1 1 0 1 0 8 0 amappl10 152 59 0 48 1 0 1 1 0 8 0 amappl9 144 263 0 263 1 1 0 1 0 8 0 amappl8 136 135 0 133 1 0 1 1 0 8 0 amappl7 128 163 0 151 1 0 1 1 0 8 0 amappl6 120 240 0 238 1 0 1 1 0 8 0 amappl5 112 92 0 85 1 0 1 1 0 8 0 amappl4 104 293 0 277 1 0 1 1 0 8 0 amappl3 96 4127 0 4028 4 1 3 4 0 8 0 amappl2 88 619 0 565 2 0 2 2 0 8 0 amappl1 80 13037 0 12488 16 3 13 16 0 8 0 amappl 88 5996 0 5845 5 0 5 5 0 92 0 uvmvnodes 80 125 0 0 3 0 3 3 0 8 0 dma16384 16384 1 0 1 1 1 0 1 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 7 0 7 1 1 0 1 0 8 0 dma128 128 254 0 254 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 6 0 1 1 0 1 1 0 8 0 uaddrrnd 24 896 0 867 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 896 0 867 1 0 1 1 0 8 0 vmmpekpl 168 8960 0 8920 3 0 3 3 0 8 0 vmmpepl 168 65292 0 63509 101 7 94 95 0 357 13 vmsppl 368 895 0 867 4 1 3 4 0 8 0 rwobjpl 40 20428 0 19440 14 0 14 14 0 8 1 pdppl 4096 1798 0 1734 120 52 68 82 0 8 4 pvpl 32 404452 0 394301 151 23 128 136 0 265 32 pmappl 216 895 0 867 3 1 2 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 403 0 80 10 0 10 10 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace pvclock_get(ffffffff83886df0) at pvclock_get+0x53 pvclock_read_begin sys/dev/pv/pvclock.c:278 [inline] pvclock_get(ffffffff83886df0) 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(ffff80003ace55f0) 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(10,ffff80003ace56a0) at __sanitizer_cov_trace_cmp8+0x1c kd_curproc sys/dev/kcov.c:580 [inline] __sanitizer_cov_trace_cmp8(10,ffff80003ace56a0) at __sanitizer_cov_trace_cmp8+0x1c sys/dev/kcov.c:212 uvm_pmr_size_RBT_COMPARE(fffffd8006ee0080,fffffd8006e8e000) at uvm_pmr_size_RBT_COMPARE+0x5b uvm_pmr_size_cmp sys/uvm/uvm_pmemrange.c:249 [inline] uvm_pmr_size_RBT_COMPARE(fffffd8006ee0080,fffffd8006e8e000) at uvm_pmr_size_RBT_COMPARE+0x5b sys/uvm/uvm_pmemrange.c:112 _rb_insert(ffffffff836c4cf0,fffffd8003fdc008,fffffd8006ee0080) at _rb_insert+0x7b sys/kern/subr_tree.c:414 uvm_pmr_remove_1strange(ffff80003ace5888,0,0,0) at uvm_pmr_remove_1strange+0x8db sys/uvm/uvm_pmemrange.h:-1 uvm_pmr_freepageq(ffff80003ace5888) at uvm_pmr_freepageq+0x1b0 sys/uvm/uvm_pmemrange.c:1388 uvm_obj_free(fffffd806717c418) at uvm_obj_free+0xfe sys/uvm/uvm_object.c:241 buf_dealloc_mem(fffffd806717c358) at buf_dealloc_mem+0x14e sys/kern/vfs_biomem.c:179 buf_put(fffffd806717c358) at buf_put+0x1d9 sys/kern/vfs_bio.c:123 brelse(fffffd806717c358) at brelse+0x397 sys/kern/vfs_bio.c:932 writedisklabel(d02,ffffffff817ef6c0,ffff800000039000) at writedisklabel+0x1b8 sys/arch/amd64/amd64/disksubr.c:158 sdioctl(d02,84946467,ffff800001700000,3,ffff80002f8c0018) at sdioctl+0x959 sys/scsi/sd.c:921 VOP_IOCTL(fffffd8065a21eb8,84946467,ffff800001700000,3,fffffd8007ffd7b8,ffff80002f8c0018) at VOP_IOCTL+0xa3 sys/kern/vfs_vops.c:264 vn_ioctl(fffffd806ce1a4c8,84946467,ffff800001700000,ffff80002f8c0018) at vn_ioctl+0xea sys/kern/vfs_vnops.c:537 sys_ioctl(ffff80002f8c0018,ffff80003ace5e30,ffff80003ace5d80) at sys_ioctl+0x660 sys/kern/sys_generic.c:-1 syscall(ffff80003ace5e30) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003ace5e30) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x5cf19342800, count: -21 ddb> machine ddbcpu 1 No such command ddb> trace pvclock_get(ffffffff83886df0) at pvclock_get+0x53 pvclock_read_begin sys/dev/pv/pvclock.c:278 [inline] pvclock_get(ffffffff83886df0) 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(ffff80003ace55f0) 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(10,ffff80003ace56a0) at __sanitizer_cov_trace_cmp8+0x1c kd_curproc sys/dev/kcov.c:580 [inline] __sanitizer_cov_trace_cmp8(10,ffff80003ace56a0) at __sanitizer_cov_trace_cmp8+0x1c sys/dev/kcov.c:212 uvm_pmr_size_RBT_COMPARE(fffffd8006ee0080,fffffd8006e8e000) at uvm_pmr_size_RBT_COMPARE+0x5b uvm_pmr_size_cmp sys/uvm/uvm_pmemrange.c:249 [inline] uvm_pmr_size_RBT_COMPARE(fffffd8006ee0080,fffffd8006e8e000) at uvm_pmr_size_RBT_COMPARE+0x5b sys/uvm/uvm_pmemrange.c:112 _rb_insert(ffffffff836c4cf0,fffffd8003fdc008,fffffd8006ee0080) at _rb_insert+0x7b sys/kern/subr_tree.c:414 uvm_pmr_remove_1strange(ffff80003ace5888,0,0,0) at uvm_pmr_remove_1strange+0x8db sys/uvm/uvm_pmemrange.h:-1 uvm_pmr_freepageq(ffff80003ace5888) at uvm_pmr_freepageq+0x1b0 sys/uvm/uvm_pmemrange.c:1388 uvm_obj_free(fffffd806717c418) at uvm_obj_free+0xfe sys/uvm/uvm_object.c:241 buf_dealloc_mem(fffffd806717c358) at buf_dealloc_mem+0x14e sys/kern/vfs_biomem.c:179 buf_put(fffffd806717c358) at buf_put+0x1d9 sys/kern/vfs_bio.c:123 brelse(fffffd806717c358) at brelse+0x397 sys/kern/vfs_bio.c:932 writedisklabel(d02,ffffffff817ef6c0,ffff800000039000) at writedisklabel+0x1b8 sys/arch/amd64/amd64/disksubr.c:158 sdioctl(d02,84946467,ffff800001700000,3,ffff80002f8c0018) at sdioctl+0x959 sys/scsi/sd.c:921 VOP_IOCTL(fffffd8065a21eb8,84946467,ffff800001700000,3,fffffd8007ffd7b8,ffff80002f8c0018) at VOP_IOCTL+0xa3 sys/kern/vfs_vops.c:264 vn_ioctl(fffffd806ce1a4c8,84946467,ffff800001700000,ffff80002f8c0018) at vn_ioctl+0xea sys/kern/vfs_vnops.c:537 sys_ioctl(ffff80002f8c0018,ffff80003ace5e30,ffff80003ace5d80) at sys_ioctl+0x660 sys/kern/sys_generic.c:-1 syscall(ffff80003ace5e30) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003ace5e30) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x5cf19342800, count: -21