uvm_fault(0xffffffff839f7c20, 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 * 31362 89711 0 0 0x4000000 0 syz-executor pvclock_get(ffffffff839024c0) at pvclock_get+0x53 pvclock_read_begin sys/dev/pv/pvclock.c:278 [inline] pvclock_get(ffffffff839024c0) 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(ffff80003c9271e0) 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+0x9e sys/dev/kcov.c:158 uvm_obj_free(fffffd806a772308) at uvm_obj_free+0xd5 sys/uvm/uvm_object.c:-1 buf_dealloc_mem(fffffd806a772248) at buf_dealloc_mem+0x14e sys/kern/vfs_biomem.c:179 buf_put(fffffd806a772248) at buf_put+0x1d9 sys/kern/vfs_bio.c:123 brelse(fffffd806a772248) at brelse+0x397 sys/kern/vfs_bio.c:932 writedisklabel(d02,ffffffff82970e30,ffff800000039000) at writedisklabel+0x1b8 sys/arch/amd64/amd64/disksubr.c:158 sdioctl(d02,84946467,ffff8000015bb800,3,ffff80003a4e6d18) at sdioctl+0x959 sys/scsi/sd.c:921 VOP_IOCTL(fffffd806a77e1d0,84946467,ffff8000015bb800,3,fffffd8007ffd618,ffff80003a4e6d18) at VOP_IOCTL+0xa3 sys/kern/vfs_vops.c:264 vn_ioctl(fffffd80627f4720,84946467,ffff8000015bb800,ffff80003a4e6d18) at vn_ioctl+0xea sys/kern/vfs_vnops.c:537 end trace frame: 0xffff80003c927780, 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(0xffffffff839f7c20, 0xffff800029ef5000, 0, 1) -> e ddb> trace pvclock_get(ffffffff839024c0) at pvclock_get+0x53 pvclock_read_begin sys/dev/pv/pvclock.c:278 [inline] pvclock_get(ffffffff839024c0) 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(ffff80003c9271e0) 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+0x9e sys/dev/kcov.c:158 uvm_obj_free(fffffd806a772308) at uvm_obj_free+0xd5 sys/uvm/uvm_object.c:-1 buf_dealloc_mem(fffffd806a772248) at buf_dealloc_mem+0x14e sys/kern/vfs_biomem.c:179 buf_put(fffffd806a772248) at buf_put+0x1d9 sys/kern/vfs_bio.c:123 brelse(fffffd806a772248) at brelse+0x397 sys/kern/vfs_bio.c:932 writedisklabel(d02,ffffffff82970e30,ffff800000039000) at writedisklabel+0x1b8 sys/arch/amd64/amd64/disksubr.c:158 sdioctl(d02,84946467,ffff8000015bb800,3,ffff80003a4e6d18) at sdioctl+0x959 sys/scsi/sd.c:921 VOP_IOCTL(fffffd806a77e1d0,84946467,ffff8000015bb800,3,fffffd8007ffd618,ffff80003a4e6d18) at VOP_IOCTL+0xa3 sys/kern/vfs_vops.c:264 vn_ioctl(fffffd80627f4720,84946467,ffff8000015bb800,ffff80003a4e6d18) at vn_ioctl+0xea sys/kern/vfs_vnops.c:537 sys_ioctl(ffff80003a4e6d18,ffff80003c927850,ffff80003c9277a0) at sys_ioctl+0x660 sys/kern/sys_generic.c:-1 syscall(ffff80003c927850) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c927850) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xce7f5c31940, count: -17 ddb> show registers rdi 0xffffffff rsi 0xd rbp 0xffff80003c9270d0 rbx 0x3 rdx 0xffff8000015a35c0 rcx 0 rax 0xc r8 0 r9 0 r10 0 r11 0x1d4ee205847eac6e r12 0xcb1 r13 0xffffffff83907f20 th0 r14 0xffffffff839024c0 pvclock_timecounter r15 0xffff800029ef5000 rip 0xffffffff82d17313 pvclock_get+0x53 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80003c927080 ss 0x10 pvclock_get+0x53: movl 0(%r15),%r12d ddb> show proc PROC (syz-executor) tid=31362 pid=89711 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=0xffff80003a4e62b8,0xffff80003a4e6560 process=0xffff8000ffff68a0 user=0xffff80003c922000, vmspace=0xfffffd806cb1f180 estcpu=36, cpticks=0, pctcpu=0.0, user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 70735 249281 58514 0 2 0 syz-executor 70735 102661 58514 0 3 0x4000080 fsleep syz-executor 89711 432145 73336 0 2 0 syz-executor *89711 31362 73336 0 7 0x4000000 syz-executor 57044 256301 51014 0 2 0 syz-executor 57044 341895 51014 0 2 0x4000000 syz-executor 64397 522875 66302 60929 2 0x10 syz-executor 64397 379800 66302 60929 2 0x4000010 syz-executor 64397 404259 66302 60929 3 0x4000090 fsleep syz-executor 60446 124289 12922 0 3 0x90 nanoslp syz-executor 60446 454528 12922 0 3 0x4000090 fsleep syz-executor 60446 66672 12922 0 2 0x4000010 syz-executor 60446 68382 12922 0 3 0x4000090 fsleep syz-executor 89293 200040 0 0 3 0x14280 nfsidl nfsio 16720 121689 0 0 3 0x14280 nfsidl nfsio 2464 260134 0 0 3 0x14280 nfsidl nfsio 44098 398292 0 0 3 0x14280 nfsidl nfsio 20749 401743 0 0 3 0x14280 nfsidl nfsio 22261 167970 0 0 3 0x14280 nfsidl nfsio 89622 509034 0 0 3 0x14280 nfsidl nfsio 97500 439629 0 0 3 0x14280 nfsidl nfsio 73032 124790 0 0 3 0x14280 nfsidl nfsio 46470 457007 0 0 3 0x14280 nfsidl nfsio 87609 244835 0 0 3 0x14280 nfsidl nfsio 16177 1403 0 0 3 0x14280 nfsidl nfsio 13099 500508 0 0 3 0x14280 nfsidl nfsio 43986 297630 0 0 3 0x14280 nfsidl nfsio 80300 222835 0 0 3 0x14280 nfsidl nfsio 33786 400564 0 0 3 0x14280 nfsidl nfsio 7610 360770 0 0 3 0x14280 nfsidl nfsio 12234 299648 0 0 3 0x14280 nfsidl nfsio 69830 101089 0 0 3 0x14280 nfsidl nfsio 67669 258845 0 0 3 0x14280 nfsidl nfsio 94212 157807 15184 0 3 0x82 wait syz-executor 12922 476247 15184 0 3 0x82 nanoslp syz-executor 58514 152250 15184 0 3 0x82 nanoslp syz-executor 51014 502359 15184 0 3 0x82 nanoslp syz-executor 12862 160083 15184 0 3 0x82 wait syz-executor 73336 47964 15184 0 3 0x82 nanoslp syz-executor 66302 352843 15184 0 3 0x82 nanoslp syz-executor 25744 221485 15184 0 3 0x82 wait syz-executor 15184 313421 98104 0 3 0x82 kqread syz-executor 98104 150718 43013 0 3 0x10008a sigsusp ksh 43013 363671 9323 0 3 0x98 kqread sshd-session 9323 451851 4008 0 3 0x92 kqread sshd-session 62734 110824 1 0 3 0x100083 ttyin getty 4008 271590 1 0 3 0x88 kqread sshd 91247 274415 51901 73 3 0x1100090 kqread syslogd 51901 455051 1 0 3 0x100082 sbwait syslogd 66567 117916 1 0 3 0x100080 kqread resolvd 54611 199501 85457 77 3 0x100092 kqread dhcpleased 91802 275453 85457 77 3 0x100092 kqread dhcpleased 85457 37086 1 0 3 0x80 kqread dhcpleased 70725 286674 0 0 3 0x14200 bored smr 85989 284423 0 0 2 0x14200 zerothread 57993 188196 0 0 3 0x14200 aiodoned aiodoned 23991 337478 0 0 3 0x14200 syncer update 17644 406293 0 0 3 0x14200 cleaner cleaner 57470 14925 0 0 3 0x14200 reaper reaper 20436 61013 0 0 3 0x14200 pgdaemon pagedaemon 56364 53131 0 0 3 0x14200 bored viomb 38376 420910 0 0 3 0x40014200 acpi0 acpi0 71411 1555 0 0 3 0x14200 bored softnet0 87412 126839 0 0 3 0x14200 bored systqmp 19295 459333 0 0 3 0x14200 bored systq 72717 11619 0 0 3 0x40014200 tmoslp softclock 28789 244077 0 0 3 0x40014200 idle0 1 128591 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 11068 12117K 12488K 166960K 12856 0 pcb 17 12K 12K 166960K 62 0 rtable 236 10K 11K 166960K 391 0 pf 32 13K 19K 166960K 134 0 ifaddr 42 7K 7K 166960K 58 0 ifgroup 47 1K 2K 166960K 73 0 sysctl 3 1K 9K 166960K 8 0 counters 33 17K 18K 166960K 49 0 ioctlops 1 2K 4K 166960K 184 0 iov 0 0K 12K 166960K 9 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1357 85K 86K 166960K 1761 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 5K 166960K 5 0 VM map 2 1K 1K 166960K 2 0 sem 12 1K 1K 166960K 13 0 dirhash 12 2K 2K 166960K 18 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 18 65K 85K 166960K 376 0 sigio 0 0K 0K 166960K 73 0 proc 61 67K 83K 166960K 518 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 67 0 in_multi 99 7K 7K 166960K 110 0 ether_multi 1 0K 0K 166960K 1 0 mrt 0 0K 0K 166960K 9 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 253 1129K 1129K 166960K 253 0 exec 0 0K 1K 166960K 373 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 226 151K 160K 166960K 4988 0 UVM aobj 10 2K 2K 166960K 10 0 pinsyscall 39 78K 91K 166960K 1457 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 17 0 NDP 11 0K 2K 166960K 37 0 temp 40 9067K 9133K 166960K 9369 0 kqueue 13 20K 29K 166960K 62 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 57 0 54 1 0 1 1 0 8 0 rtentry 136 115 0 14 4 0 4 4 0 8 0 unpcb 144 297 0 282 6 0 6 6 0 8 5 syncache 336 3 0 3 1 0 1 1 0 8 1 tcpcb 736 53 0 49 1 0 1 1 0 8 0 arp 96 18 0 0 1 0 1 1 0 8 0 inpcb 328 206 0 198 2 0 2 2 0 8 1 ip6q 72 1 0 0 1 0 1 1 0 8 0 ip6af 40 1 0 0 1 0 1 1 0 8 0 nd6 112 26 0 1 1 0 1 1 0 8 0 pkpcb 40 2 0 2 1 0 1 1 0 8 1 kcovpl 48 8 0 0 1 0 1 1 0 8 0 mppekey 1024 1 0 1 1 0 1 1 0 8 1 ppxss 1072 15 0 15 1 0 1 1 0 8 1 pppxif 1416 1 0 1 1 0 1 1 0 8 1 pfstscr 40 67 0 67 1 0 1 1 0 8 1 pffrag 232 2 0 1 1 0 1 1 0 482 0 pffrnode 88 2 0 1 1 0 1 1 0 8 0 pffrent 40 3 0 2 1 0 1 1 0 8 0 pfrktable 1344 9 0 3 1 0 1 1 0 8 0 pfanchor 1288 1 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 2 1 0 1 1 0 8 1 pfstitem 24 2 0 2 1 0 1 1 0 8 1 pfstkey 128 68 0 68 1 0 1 1 0 8 1 pfstate 384 34 0 34 1 0 1 1 0 8 1 pfrule 1360 4 0 2 1 0 1 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 493 0 49 31 0 31 31 0 8 1 art_table 40 494 0 49 5 0 5 5 0 8 0 art_node 32 115 0 24 1 0 1 1 0 8 0 sysvmsgpl 40 3 0 1 1 0 1 1 0 8 0 semupl 112 2 0 2 1 0 1 1 0 8 1 semapl 112 11 0 1 1 0 1 1 0 8 0 shmpl 112 7 0 0 1 0 1 1 0 8 0 dirhash 1024 21 0 4 3 0 3 3 0 8 0 dino2pl 256 2023 0 568 92 0 92 92 0 8 0 ffsino 256 2023 0 568 92 0 92 92 0 8 0 nchpl 144 2568 0 873 64 0 64 64 0 8 0 rtmask 32 2 0 2 1 0 1 1 0 8 1 vnodes 216 2421 0 0 135 0 135 135 0 8 0 namei 1024 8632 0 8632 2 0 2 2 0 8 2 pfiaddrpl 120 2 0 0 1 0 1 1 0 8 0 kstatmem 264 43 0 20 2 0 2 2 0 8 0 scsiplug 72 1 0 1 1 0 1 1 0 8 1 scxspl 216 13379 0 13379 8 0 8 8 1 8 8 plimitpl 152 161 0 145 1 0 1 1 0 8 0 sigapl 424 686 0 623 8 0 8 8 0 8 0 knotepl 120 12190 0 12143 9 0 9 9 0 8 7 kqueuepl 184 110 0 101 2 0 2 2 0 8 1 pipepl 304 130 0 102 3 0 3 3 0 8 0 fdescpl 448 653 0 623 4 0 4 4 0 8 0 filepl 120 3545 0 3319 11 0 11 11 0 8 3 lockfpl 104 186 0 184 2 0 2 2 0 8 1 lockfspl 48 85 0 83 1 0 1 1 0 8 0 sessionpl 144 32 0 24 1 0 1 1 0 8 0 pgrppl 48 43 0 27 1 0 1 1 0 8 0 ucredpl 104 452 0 437 1 0 1 1 0 8 0 zombiepl 144 626 0 623 1 0 1 1 0 8 0 processpl 1152 686 0 623 5 0 5 5 0 8 0 procpl 664 1059 0 988 7 0 7 7 0 8 0 sockpl 552 571 0 545 12 2 10 12 0 8 8 mcl64k 65536 11 0 11 1 0 1 1 0 8 1 mcl16k 16384 5 0 5 1 0 1 1 0 8 1 mcl8k 8192 8 0 7 1 0 1 1 0 8 0 mcl4k 4096 2813 0 2761 14 0 14 14 0 8 7 mcl2k 2048 297 0 295 1 0 1 1 0 8 0 mtagpl 96 8 0 4 1 0 1 1 0 8 0 mbufpl 256 6569 0 6397 14 0 14 14 0 8 2 bufpl 280 6366 0 152 444 0 444 444 0 8 0 anonpl 24 132344 0 129099 60 0 60 60 0 187 24 amapchunkpl 152 16088 0 15612 35 0 35 35 0 158 15 amappl16 200 2635 0 2606 23 9 14 23 0 8 8 amappl15 192 6 0 6 1 0 1 1 0 8 1 amappl14 184 409 0 408 1 0 1 1 0 8 0 amappl13 176 112 0 102 1 0 1 1 0 8 0 amappl12 168 891 0 861 2 0 2 2 0 8 0 amappl11 160 3 0 3 1 0 1 1 0 8 1 amappl10 152 60 0 50 1 0 1 1 0 8 0 amappl9 144 260 0 260 1 0 1 1 0 8 1 amappl8 136 116 0 115 1 0 1 1 0 8 0 amappl7 128 139 0 127 1 0 1 1 0 8 0 amappl6 120 155 0 153 1 0 1 1 0 8 0 amappl5 112 102 0 94 1 0 1 1 0 8 0 amappl4 104 264 0 247 1 0 1 1 0 8 0 amappl3 96 2943 0 2834 4 0 4 4 0 8 0 amappl2 88 515 0 460 2 0 2 2 0 8 0 amappl1 80 10001 0 9455 13 0 13 13 0 8 1 amappl 88 4277 0 4115 5 0 5 5 0 92 0 uvmvnodes 80 107 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 128 254 0 254 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 9 0 0 1 0 1 1 0 8 0 uaddrrnd 24 653 0 623 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 653 0 623 1 0 1 1 0 8 0 vmmpekpl 168 6730 0 6700 2 0 2 2 0 8 0 vmmpepl 168 48831 0 47006 97 0 97 97 0 357 14 vmsppl 368 652 0 623 4 0 4 4 0 8 1 rwobjpl 40 16362 0 15408 14 0 14 14 0 8 1 pdppl 4096 1312 0 1246 90 24 66 76 0 8 0 pvpl 32 323908 0 314286 153 0 153 153 0 265 50 pmappl 216 652 0 623 2 0 2 2 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 358 0 24 10 0 10 10 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace pvclock_get(ffffffff839024c0) at pvclock_get+0x53 pvclock_read_begin sys/dev/pv/pvclock.c:278 [inline] pvclock_get(ffffffff839024c0) 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(ffff80003c9271e0) 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+0x9e sys/dev/kcov.c:158 uvm_obj_free(fffffd806a772308) at uvm_obj_free+0xd5 sys/uvm/uvm_object.c:-1 buf_dealloc_mem(fffffd806a772248) at buf_dealloc_mem+0x14e sys/kern/vfs_biomem.c:179 buf_put(fffffd806a772248) at buf_put+0x1d9 sys/kern/vfs_bio.c:123 brelse(fffffd806a772248) at brelse+0x397 sys/kern/vfs_bio.c:932 writedisklabel(d02,ffffffff82970e30,ffff800000039000) at writedisklabel+0x1b8 sys/arch/amd64/amd64/disksubr.c:158 sdioctl(d02,84946467,ffff8000015bb800,3,ffff80003a4e6d18) at sdioctl+0x959 sys/scsi/sd.c:921 VOP_IOCTL(fffffd806a77e1d0,84946467,ffff8000015bb800,3,fffffd8007ffd618,ffff80003a4e6d18) at VOP_IOCTL+0xa3 sys/kern/vfs_vops.c:264 vn_ioctl(fffffd80627f4720,84946467,ffff8000015bb800,ffff80003a4e6d18) at vn_ioctl+0xea sys/kern/vfs_vnops.c:537 sys_ioctl(ffff80003a4e6d18,ffff80003c927850,ffff80003c9277a0) at sys_ioctl+0x660 sys/kern/sys_generic.c:-1 syscall(ffff80003c927850) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c927850) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xce7f5c31940, count: -17 ddb> machine ddbcpu 1 No such command ddb> trace pvclock_get(ffffffff839024c0) at pvclock_get+0x53 pvclock_read_begin sys/dev/pv/pvclock.c:278 [inline] pvclock_get(ffffffff839024c0) 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(ffff80003c9271e0) 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+0x9e sys/dev/kcov.c:158 uvm_obj_free(fffffd806a772308) at uvm_obj_free+0xd5 sys/uvm/uvm_object.c:-1 buf_dealloc_mem(fffffd806a772248) at buf_dealloc_mem+0x14e sys/kern/vfs_biomem.c:179 buf_put(fffffd806a772248) at buf_put+0x1d9 sys/kern/vfs_bio.c:123 brelse(fffffd806a772248) at brelse+0x397 sys/kern/vfs_bio.c:932 writedisklabel(d02,ffffffff82970e30,ffff800000039000) at writedisklabel+0x1b8 sys/arch/amd64/amd64/disksubr.c:158 sdioctl(d02,84946467,ffff8000015bb800,3,ffff80003a4e6d18) at sdioctl+0x959 sys/scsi/sd.c:921 VOP_IOCTL(fffffd806a77e1d0,84946467,ffff8000015bb800,3,fffffd8007ffd618,ffff80003a4e6d18) at VOP_IOCTL+0xa3 sys/kern/vfs_vops.c:264 vn_ioctl(fffffd80627f4720,84946467,ffff8000015bb800,ffff80003a4e6d18) at vn_ioctl+0xea sys/kern/vfs_vnops.c:537 sys_ioctl(ffff80003a4e6d18,ffff80003c927850,ffff80003c9277a0) at sys_ioctl+0x660 sys/kern/sys_generic.c:-1 syscall(ffff80003c927850) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c927850) at syscall+0x962 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xce7f5c31940, count: -17