login: uvm_fault(0xffffffff8396e8e0, 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 *172326 3975 0 0 0x4000000 0 syz-executor pvclock_get(ffffffff838ae100) at pvclock_get+0x53 pvclock_read_begin sys/dev/pv/pvclock.c:278 [inline] pvclock_get(ffffffff838ae100) 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(ffff80003a8f16e0) 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+0x84 kd_claim sys/dev/kcov.c:632 [inline] __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x84 sys/dev/kcov.c:157 uvm_pmr_freepageq(ffff80003a8f1808) at uvm_pmr_freepageq+0xb5 sys/uvm/uvm_pmemrange.c:1370 uvm_obj_free(fffffd805fa73bd0) at uvm_obj_free+0xfe sys/uvm/uvm_object.c:241 buf_dealloc_mem(fffffd805fa73b10) at buf_dealloc_mem+0x14e sys/kern/vfs_biomem.c:179 buf_put(fffffd805fa73b10) at buf_put+0x1d9 sys/kern/vfs_bio.c:123 brelse(fffffd805fa73b10) at brelse+0x397 sys/kern/vfs_bio.c:932 writedisklabel(d02,ffffffff82802f80,ffff800000039000) at writedisklabel+0x1b8 sys/arch/amd64/amd64/disksubr.c:158 sdioctl(d02,84946467,ffff8000015eb800,3,ffff80002f0c0d10) at sdioctl+0x959 sys/scsi/sd.c:921 VOP_IOCTL(fffffd806c19b450,84946467,ffff8000015eb800,3,fffffd8007ffd5b0,ffff80002f0c0d10) at VOP_IOCTL+0xa3 sys/kern/vfs_vops.c:264 end trace frame: 0xffff80003a8f1bd0, 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(0xffffffff8396e8e0, 0xffff800029ef5000, 0, 1) -> e ddb> trace pvclock_get(ffffffff838ae100) at pvclock_get+0x53 pvclock_read_begin sys/dev/pv/pvclock.c:278 [inline] pvclock_get(ffffffff838ae100) 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(ffff80003a8f16e0) 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+0x84 kd_claim sys/dev/kcov.c:632 [inline] __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x84 sys/dev/kcov.c:157 uvm_pmr_freepageq(ffff80003a8f1808) at uvm_pmr_freepageq+0xb5 sys/uvm/uvm_pmemrange.c:1370 uvm_obj_free(fffffd805fa73bd0) at uvm_obj_free+0xfe sys/uvm/uvm_object.c:241 buf_dealloc_mem(fffffd805fa73b10) at buf_dealloc_mem+0x14e sys/kern/vfs_biomem.c:179 buf_put(fffffd805fa73b10) at buf_put+0x1d9 sys/kern/vfs_bio.c:123 brelse(fffffd805fa73b10) at brelse+0x397 sys/kern/vfs_bio.c:932 writedisklabel(d02,ffffffff82802f80,ffff800000039000) at writedisklabel+0x1b8 sys/arch/amd64/amd64/disksubr.c:158 sdioctl(d02,84946467,ffff8000015eb800,3,ffff80002f0c0d10) at sdioctl+0x959 sys/scsi/sd.c:921 VOP_IOCTL(fffffd806c19b450,84946467,ffff8000015eb800,3,fffffd8007ffd5b0,ffff80002f0c0d10) at VOP_IOCTL+0xa3 sys/kern/vfs_vops.c:264 vn_ioctl(fffffd8064362ae0,84946467,ffff8000015eb800,ffff80002f0c0d10) at vn_ioctl+0xea sys/kern/vfs_vnops.c:531 sys_ioctl(ffff80002f0c0d10,ffff80003a8f1db0,ffff80003a8f1d00) at sys_ioctl+0x660 sys/kern/sys_generic.c:-1 syscall(ffff80003a8f1db0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003a8f1db0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x55ddc5fe150, count: -18 ddb> show registers rdi 0xffffffff rsi 0xd rbp 0xffff80003a8f15d0 rbx 0x3 rdx 0xffff8000015aecc0 rcx 0 rax 0xc r8 0 r9 0 r10 0 r11 0xa5a9ebc617038eb9 r12 0x16e3 __ALIGN_SIZE+0x6e3 r13 0xffffffff838d82f0 th0 r14 0xffffffff838ae100 pvclock_timecounter r15 0xffff800029ef5000 rip 0xffffffff820efeb3 pvclock_get+0x53 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80003a8f1580 ss 0x10 pvclock_get+0x53: movl 0(%r15),%r12d ddb> show proc PROC (syz-executor) tid=172326 pid=3975 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=0xffff80002f0c1a08,0xffffffff83926818 process=0xffff8000ffffb618 user=0xffff80003a8ec000, vmspace=0xfffffd806ccdd740 estcpu=36, cpticks=0, pctcpu=0.0, user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 3975 317658 14433 0 2 0 syz-executor * 3975 172326 14433 0 7 0x4000000 syz-executor 76390 366330 93358 0 2 0 syz-executor 76390 252030 93358 0 3 0x4000080 fsleep syz-executor 78136 146308 38602 0 2 0 syz-executor 78136 14240 38602 0 3 0x4000080 fsleep syz-executor 18019 482659 55741 0 2 0 syz-executor 18019 240084 55741 0 3 0x4000080 fsleep syz-executor 18019 444886 55741 0 3 0x4000080 fsleep syz-executor 14001 49480 48112 0 3 0x80 nanoslp syz-executor 14001 81271 48112 0 3 0x4000080 kqread syz-executor 14001 236855 48112 0 3 0x4000080 fsleep syz-executor 25737 409543 1 0 3 0x100083 ttyin getty 55741 50517 65632 0 3 0x82 nanoslp syz-executor 41767 473734 65632 0 3 0x82 wait syz-executor 68800 329245 65632 0 3 0x82 wait syz-executor 48112 321464 65632 0 3 0x82 nanoslp syz-executor 38602 205862 65632 0 3 0x82 nanoslp syz-executor 93358 206230 65632 0 3 0x82 nanoslp syz-executor 14433 402567 65632 0 3 0x82 nanoslp syz-executor 10678 54989 65632 0 2 0x2 syz-executor 65632 131838 1330 0 3 0x82 kqread syz-executor 1330 321024 75889 0 3 0x10008a sigsusp ksh 75889 139818 27244 0 3 0x98 kqread sshd-session 27244 155003 66083 0 3 0x92 kqread sshd-session 66083 346875 1 0 3 0x88 kqread sshd 36930 288321 86058 73 3 0x1100090 kqread syslogd 86058 248581 1 0 3 0x100082 sbwait syslogd 39338 159005 1 0 3 0x100080 kqread resolvd 40147 124940 56140 77 3 0x100092 kqread dhcpleased 49098 225183 56140 77 3 0x100092 kqread dhcpleased 56140 93503 1 0 3 0x80 kqread dhcpleased 12694 466649 0 0 3 0x14200 bored smr 82196 59929 0 0 2 0x14200 zerothread 50365 42958 0 0 3 0x14200 aiodoned aiodoned 36352 200718 0 0 3 0x14200 syncer update 43068 168159 0 0 3 0x14200 cleaner cleaner 10195 453697 0 0 3 0x14200 reaper reaper 1821 459016 0 0 3 0x14200 pgdaemon pagedaemon 81814 211207 0 0 3 0x14200 bored viomb 81620 46092 0 0 3 0x40014200 acpi0 acpi0 16780 263051 0 0 3 0x14200 bored softnet0 42637 98697 0 0 3 0x14200 bored systqmp 48382 130452 0 0 3 0x14200 bored systq 35891 58438 0 0 3 0x40014200 tmoslp softclock 3735 297926 0 0 3 0x40014200 idle0 1 457329 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 11045 12136K 12649K 166960K 15168 0 pcb 17 12K 12K 166960K 481 0 rtable 58 11K 15K 166960K 515 0 pf 33 13K 19K 166960K 85 0 ifaddr 19 1K 8K 166960K 64 0 ifgroup 50 2K 2K 166960K 91 0 sysctl 4 1K 9K 166960K 18 0 counters 33 17K 18K 166960K 54 0 ioctlops 1 2K 4K 166960K 627 0 iov 0 0K 12K 166960K 17 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1327 83K 84K 166960K 3806 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 5K 166960K 9 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 1K 166960K 294 0 dirhash 12 2K 2K 166960K 45 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 17 61K 89K 166960K 2252 0 sigio 0 0K 0K 166960K 3 0 proc 60 59K 108K 166960K 529 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 171 0 in_multi 11 0K 8K 166960K 119 0 ether_multi 1 0K 0K 166960K 1 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 85 387K 387K 166960K 85 0 exec 0 0K 1K 166960K 509 0 fusefs mount 1 32K 32K 166960K 1 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 224 160K 180K 166960K 20571 0 UVM aobj 12 2K 2K 166960K 15 0 pinsyscall 38 76K 92K 166960K 3364 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 2 0K 1K 166960K 180 0 NDP 11 0K 2K 166960K 38 0 temp 87 9072K 9148K 166960K 33147 0 kqueue 13 20K 26K 166960K 110 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 120 177 0 173 1 0 1 1 0 8 0 rtentry 136 140 0 129 4 0 4 4 0 8 1 unpcb 144 1267 0 1252 6 0 6 6 0 8 5 syncache 336 7 0 7 1 0 1 1 0 8 1 tcpqe 32 1 0 1 1 0 1 1 0 8 1 tcpcb 736 958 0 950 4 0 4 4 0 8 2 arp 96 18 0 16 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 1935 0 1923 4 0 4 4 0 8 2 nd6 112 31 0 31 1 0 1 1 0 8 1 kcovpl 48 8 0 0 1 0 1 1 0 8 0 ppxss 1072 14 0 14 1 0 1 1 0 8 1 pppxif 1416 3 0 3 1 0 1 1 0 8 1 pfstscr 40 4 0 4 1 0 1 1 0 8 1 pffrag 232 1 0 0 1 0 1 1 0 482 0 pffrnode 88 1 0 0 1 0 1 1 0 8 0 pffrent 40 12 0 11 1 0 1 1 0 8 0 pfosfp 40 9 0 8 1 0 1 1 0 8 0 pfosfpen 112 9 0 8 1 0 1 1 0 8 0 pfrktable 1344 5 0 5 1 0 1 1 0 8 1 pfsrclim 320 1 0 1 1 0 1 1 0 8 1 pfanchor 1288 1 0 1 1 0 1 1 0 8 1 pftag 88 1 0 0 1 0 1 1 0 8 0 pfqueue 320 17 0 0 2 0 2 2 0 8 0 pfstitem 24 2 0 0 1 0 1 1 0 8 0 pfstkey 128 88 0 86 1 0 1 1 0 8 0 pfstate 384 44 0 43 1 0 1 1 0 8 0 pfrule 1360 3 0 3 1 0 1 1 0 8 1 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 489 0 475 29 18 11 29 0 8 8 art_table 40 491 0 475 5 0 5 5 0 8 3 art_node 32 136 0 128 1 0 1 1 0 8 0 sysvmsgpl 40 1 0 0 1 0 1 1 0 8 0 semapl 112 292 0 282 1 0 1 1 0 8 0 shmpl 112 12 0 3 1 0 1 1 0 8 0 dirhash 1024 39 0 22 3 0 3 3 0 8 0 dino2pl 256 6086 0 4632 92 0 92 92 0 8 0 ffsino 256 6086 0 4632 92 0 92 92 0 8 0 nchpl 144 8863 0 7164 64 0 64 64 0 8 0 rtmask 32 6 0 6 1 0 1 1 0 8 1 vnodes 216 5926 0 0 330 0 330 330 0 8 0 namei 1024 25215 0 25215 2 0 2 2 0 8 2 pfiaddrpl 120 1 0 1 1 0 1 1 0 8 1 kstatmem 264 44 0 22 2 0 2 2 0 8 0 scsiplug 72 40 0 40 1 0 1 1 0 8 1 scxspl 216 33249 0 33249 8 0 8 8 1 8 8 plimitpl 152 229 0 212 1 0 1 1 0 8 0 sigapl 424 2621 0 2579 6 0 6 6 0 8 1 knotepl 120 75970 0 75923 10 0 10 10 0 8 8 kqueuepl 184 130 0 120 1 0 1 1 0 8 0 pipepl 304 249 0 222 3 0 3 3 0 8 0 fdescpl 448 2536 0 2507 5 0 5 5 0 8 1 filepl 120 12511 0 12289 13 0 13 13 0 8 5 lockfpl 104 976 0 972 1 0 1 1 0 8 0 lockfspl 48 422 0 418 1 0 1 1 0 8 0 sessionpl 144 37 0 29 1 0 1 1 0 8 0 pgrppl 48 45 0 29 1 0 1 1 0 8 0 ucredpl 104 1518 0 1507 1 0 1 1 0 8 0 zombiepl 144 2581 0 2579 1 0 1 1 0 8 0 processpl 1152 2621 0 2579 4 0 4 4 0 8 0 procpl 664 4949 0 4900 5 0 5 5 0 8 0 sosppl 176 63 0 63 1 0 1 1 0 8 1 sockpl 552 3419 0 3388 12 1 11 12 0 8 8 mcl64k 65536 451 0 451 1 0 1 1 0 8 1 mcl16k 16384 167 0 167 1 0 1 1 0 8 1 mcl12k 12288 69 0 69 1 0 1 1 0 8 1 mcl9k 9216 21 0 21 1 0 1 1 0 8 1 mcl8k 8192 441 0 441 1 0 1 1 0 8 1 mcl4k 4096 6773 0 6721 13 0 13 13 0 8 6 mcl2k2 2112 16 0 16 1 0 1 1 0 8 1 mcl2k 2048 1458 0 1456 2 0 2 2 0 8 1 mtagpl 96 32 0 23 1 0 1 1 0 8 0 mbufpl 256 26662 0 26550 14 0 14 14 0 8 1 bufpl 280 9501 0 3287 444 0 444 444 0 8 0 anonpl 24 438244 0 432978 68 0 68 68 0 187 22 amapchunkpl 152 77647 0 77054 31 0 31 31 0 158 7 amappl16 200 4884 0 4854 25 8 17 25 0 8 8 amappl15 192 15 0 15 1 0 1 1 0 8 1 amappl14 184 412 0 411 1 0 1 1 0 8 0 amappl13 176 121 0 110 1 0 1 1 0 8 0 amappl12 168 2807 0 2779 2 0 2 2 0 8 0 amappl11 160 4 0 4 1 0 1 1 0 8 1 amappl10 152 60 0 50 1 0 1 1 0 8 0 amappl9 144 258 0 258 1 0 1 1 0 8 1 amappl8 136 196 0 195 1 0 1 1 0 8 0 amappl7 128 148 0 136 1 0 1 1 0 8 0 amappl6 120 151 0 150 1 0 1 1 0 8 0 amappl5 112 101 0 93 1 0 1 1 0 8 0 amappl4 104 272 0 256 1 0 1 1 0 8 0 amappl3 96 14715 0 14608 4 0 4 4 0 8 0 amappl2 88 536 0 483 2 0 2 2 0 8 0 amappl1 80 18567 0 18017 15 0 15 15 0 8 2 amappl 88 19546 0 19386 5 0 5 5 0 92 0 uvmvnodes 80 146 0 0 3 0 3 3 0 8 0 dma4096 4096 1 0 1 1 0 1 1 0 8 1 dma1024 1024 2 0 1 1 0 1 1 0 8 0 dma256 256 8 0 8 1 0 1 1 0 8 1 dma128 128 292 0 292 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 18 0 17 1 0 1 1 0 8 0 aobjpl 72 14 0 3 1 0 1 1 0 8 0 uaddrrnd 24 2536 0 2507 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 2536 0 2507 1 0 1 1 0 8 0 vmmpekpl 168 18292 0 18259 2 0 2 2 0 8 0 vmmpepl 168 155502 0 153720 100 0 100 100 0 357 18 vmsppl 368 2535 0 2507 4 0 4 4 0 8 1 rwobjpl 40 36388 0 35388 15 0 15 15 0 8 2 pdppl 4096 5078 0 5014 104 38 66 78 0 8 2 pvpl 32 1261803 0 1250207 165 0 165 165 0 265 43 pmappl 216 2535 0 2507 2 0 2 2 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 374 0 56 10 0 10 10 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace pvclock_get(ffffffff838ae100) at pvclock_get+0x53 pvclock_read_begin sys/dev/pv/pvclock.c:278 [inline] pvclock_get(ffffffff838ae100) 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(ffff80003a8f16e0) 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+0x84 kd_claim sys/dev/kcov.c:632 [inline] __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x84 sys/dev/kcov.c:157 uvm_pmr_freepageq(ffff80003a8f1808) at uvm_pmr_freepageq+0xb5 sys/uvm/uvm_pmemrange.c:1370 uvm_obj_free(fffffd805fa73bd0) at uvm_obj_free+0xfe sys/uvm/uvm_object.c:241 buf_dealloc_mem(fffffd805fa73b10) at buf_dealloc_mem+0x14e sys/kern/vfs_biomem.c:179 buf_put(fffffd805fa73b10) at buf_put+0x1d9 sys/kern/vfs_bio.c:123 brelse(fffffd805fa73b10) at brelse+0x397 sys/kern/vfs_bio.c:932 writedisklabel(d02,ffffffff82802f80,ffff800000039000) at writedisklabel+0x1b8 sys/arch/amd64/amd64/disksubr.c:158 sdioctl(d02,84946467,ffff8000015eb800,3,ffff80002f0c0d10) at sdioctl+0x959 sys/scsi/sd.c:921 VOP_IOCTL(fffffd806c19b450,84946467,ffff8000015eb800,3,fffffd8007ffd5b0,ffff80002f0c0d10) at VOP_IOCTL+0xa3 sys/kern/vfs_vops.c:264 vn_ioctl(fffffd8064362ae0,84946467,ffff8000015eb800,ffff80002f0c0d10) at vn_ioctl+0xea sys/kern/vfs_vnops.c:531 sys_ioctl(ffff80002f0c0d10,ffff80003a8f1db0,ffff80003a8f1d00) at sys_ioctl+0x660 sys/kern/sys_generic.c:-1 syscall(ffff80003a8f1db0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003a8f1db0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x55ddc5fe150, count: -18 ddb> machine ddbcpu 1 No such command ddb> trace pvclock_get(ffffffff838ae100) at pvclock_get+0x53 pvclock_read_begin sys/dev/pv/pvclock.c:278 [inline] pvclock_get(ffffffff838ae100) 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(ffff80003a8f16e0) 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+0x84 kd_claim sys/dev/kcov.c:632 [inline] __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x84 sys/dev/kcov.c:157 uvm_pmr_freepageq(ffff80003a8f1808) at uvm_pmr_freepageq+0xb5 sys/uvm/uvm_pmemrange.c:1370 uvm_obj_free(fffffd805fa73bd0) at uvm_obj_free+0xfe sys/uvm/uvm_object.c:241 buf_dealloc_mem(fffffd805fa73b10) at buf_dealloc_mem+0x14e sys/kern/vfs_biomem.c:179 buf_put(fffffd805fa73b10) at buf_put+0x1d9 sys/kern/vfs_bio.c:123 brelse(fffffd805fa73b10) at brelse+0x397 sys/kern/vfs_bio.c:932 writedisklabel(d02,ffffffff82802f80,ffff800000039000) at writedisklabel+0x1b8 sys/arch/amd64/amd64/disksubr.c:158 sdioctl(d02,84946467,ffff8000015eb800,3,ffff80002f0c0d10) at sdioctl+0x959 sys/scsi/sd.c:921 VOP_IOCTL(fffffd806c19b450,84946467,ffff8000015eb800,3,fffffd8007ffd5b0,ffff80002f0c0d10) at VOP_IOCTL+0xa3 sys/kern/vfs_vops.c:264 vn_ioctl(fffffd8064362ae0,84946467,ffff8000015eb800,ffff80002f0c0d10) at vn_ioctl+0xea sys/kern/vfs_vnops.c:531 sys_ioctl(ffff80002f0c0d10,ffff80003a8f1db0,ffff80003a8f1d00) at sys_ioctl+0x660 sys/kern/sys_generic.c:-1 syscall(ffff80003a8f1db0) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003a8f1db0) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x55ddc5fe150, count: -18