uvm_fault(0xfffffd806ef44990, 0x20, 0, 1) -> e kernel: page fault trap, code=0 Stopped at mtx_enter_try+0x7b: movl 0x8(%r14),%r15d TID PID UID PRFLAGS PFLAGS CPU COMMAND 248267 25413 0 0 0x4000000 1 syz-executor mtx_enter_try(18) at mtx_enter_try+0x7b sys/kern/kern_lock.c:290 mtx_enter(18) at mtx_enter+0x62 sys/kern/kern_lock.c:261 clockintr_unbind(ffff800001493230,1) at clockintr_unbind+0x56 sys/kern/kern_clockintr.c:375 dt_ioctl_record_stop(ffff800001478000) at dt_ioctl_record_stop+0xbc sys/dev/dt/dt_dev.c:582 dtclose(11e5f,82,2000,ffff8000fffef770) at dtclose+0x109 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(11e5f,82,2000,ffff8000fffef770) at dtclose+0x109 sys/dev/dt/dt_dev.c:232 spec_close(ffff80003c458df0) at spec_close+0x466 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd80622b21c8,82,fffffd80097fb548,ffff8000fffef770) at VOP_CLOSE+0x132 sys/kern/vfs_vops.c:156 vn_closefile(fffffd806b6a3240,ffff8000fffef770) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd806b6a3240,ffff8000fffef770) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd806b6a3240,ffff8000fffef770) at fdrop+0x121 sys/kern/kern_descrip.c:1280 closef(fffffd806b6a3240,ffff8000fffef770) at closef+0x192 sys/kern/kern_descrip.c:1264 fdfree(ffff8000fffef770) at fdfree+0x116 sys/kern/kern_descrip.c:1195 exit1(ffff8000fffef770,b,0,1) at exit1+0x576 sys/kern/kern_exit.c:215 sys_exit(ffff8000fffef770,ffff80003c459160,ffff80003c4590b0) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80003c459160) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c459160) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:746 end trace frame: 0xffff80003c4591e0, 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{0}> ddb{0}> set $lines = 0 ddb{0}> set $maxwidth = 0 ddb{0}> show panic *cpu0: uvm_fault(0xfffffd806ef44990, 0x20, 0, 1) -> e ddb{0}> trace mtx_enter_try(18) at mtx_enter_try+0x7b sys/kern/kern_lock.c:290 mtx_enter(18) at mtx_enter+0x62 sys/kern/kern_lock.c:261 clockintr_unbind(ffff800001493230,1) at clockintr_unbind+0x56 sys/kern/kern_clockintr.c:375 dt_ioctl_record_stop(ffff800001478000) at dt_ioctl_record_stop+0xbc sys/dev/dt/dt_dev.c:582 dtclose(11e5f,82,2000,ffff8000fffef770) at dtclose+0x109 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(11e5f,82,2000,ffff8000fffef770) at dtclose+0x109 sys/dev/dt/dt_dev.c:232 spec_close(ffff80003c458df0) at spec_close+0x466 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd80622b21c8,82,fffffd80097fb548,ffff8000fffef770) at VOP_CLOSE+0x132 sys/kern/vfs_vops.c:156 vn_closefile(fffffd806b6a3240,ffff8000fffef770) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd806b6a3240,ffff8000fffef770) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd806b6a3240,ffff8000fffef770) at fdrop+0x121 sys/kern/kern_descrip.c:1280 closef(fffffd806b6a3240,ffff8000fffef770) at closef+0x192 sys/kern/kern_descrip.c:1264 fdfree(ffff8000fffef770) at fdfree+0x116 sys/kern/kern_descrip.c:1195 exit1(ffff8000fffef770,b,0,1) at exit1+0x576 sys/kern/kern_exit.c:215 sys_exit(ffff8000fffef770,ffff80003c459160,ffff80003c4590b0) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80003c459160) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c459160) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:746 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7ee99c28a0a0, count: -15 ddb{0}> show registers rdi 0 rsi 0 rbp 0xffff80003c458c50 rbx 0 rdx 0 rcx 0xffff8000fffef770 rax 0xffffffff83821f00 cpu_info_full_primary+0x1f00 r8 0xffffffffffffffff r9 0 r10 0x69b6fa8bb2517aa8 r11 0x57760dcd1615484f r12 0x1 r13 0xffffffff83821ff0 cpu_info_full_primary+0x1ff0 r14 0x18 r15 0 rip 0xffffffff81ed1a7b mtx_enter_try+0x7b cs 0x8 rflags 0x10297 __ALIGN_SIZE+0xf297 rsp 0xffff80003c458c10 ss 0x10 mtx_enter_try+0x7b: movl 0x8(%r14),%r15d ddb{0}> show proc PROC (syz-executor) tid=271279 pid=66332 tcnt=0 stat=onproc flags process=1008 proc=2000 runpri=32, usrpri=50, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0xffff8000fffef770 scnt=-1 ecnt=1 forw=0xffffffffffffffff, list=0xffff80003c409248,0xffffffff83909918 process=0xffff80002a3ce1c8 user=0xffff80003c454000, vmspace=0xfffffd806ef44990 estcpu=36, cpticks=2, pctcpu=0.0, user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 1957 392169 98515 0 2 0 syz-executor 1957 392433 98515 0 2 0x4000c80 syz-executor 74706 438868 15537 0 2 0 syz-executor 74706 422729 15537 0 3 0x4000080 fsleep syz-executor 95228 355856 66801 0 3 0x80 nanoslp syz-executor 95228 64731 66801 0 2 0x4000c80 syz-executor 95228 355006 66801 0 3 0x4000080 fsleep syz-executor 67165 160712 1 0 3 0x82 nanoslp getty 99067 384622 67861 0 2 0xc80 syz-executor 99067 435416 67861 0 3 0x4000080 fsleep syz-executor 99067 59336 67861 0 3 0x4000080 ttyin syz-executor 25413 122762 55781 0 3 0x80 nanoslp syz-executor 25413 248267 55781 0 7 0x4000000 syz-executor 25413 227819 55781 0 3 0x4000080 fsleep syz-executor 25413 453912 55781 0 3 0x4000080 fsleep syz-executor 54796 414056 0 0 3 0x14200 bored sosplice 43199 475907 43062 0 2 0xc82 syz-executor 98515 107213 43062 0 2 0xc82 syz-executor 55781 331815 43062 0 3 0x82 nanoslp syz-executor 66801 75703 43062 0 2 0xc82 syz-executor 67861 371445 43062 0 3 0x82 nanoslp syz-executor 79679 277508 43062 0 3 0x82 wait syz-executor 18320 338124 43062 0 2 0x2 syz-executor 15537 113391 43062 0 3 0x82 nanoslp syz-executor 43062 75999 54646 0 3 0x82 kqread syz-executor 54646 298831 33991 0 3 0x10008a sigsusp ksh 33991 474181 38551 0 3 0x98 kqread sshd-session 38551 444243 91614 0 3 0x92 kqread sshd-session 91614 79444 1 0 3 0x88 kqread sshd 75484 284106 61753 74 3 0x1100092 bpf pflogd 61753 509319 1 0 3 0x80 sbwait pflogd 95373 184514 68437 73 3 0x1100090 kqread syslogd 68437 36302 1 0 3 0x100082 sbwait syslogd 17533 451064 1 0 3 0x100080 kqread resolvd 68668 15854 82155 77 3 0x100092 kqread dhcpleased 20099 165874 82155 77 3 0x100092 kqread dhcpleased 82155 473106 1 0 3 0x80 kqread dhcpleased 37987 367868 0 0 3 0x14200 bored smr 58693 340098 0 0 3 0x14200 pgzero zerothread 42145 34587 0 0 3 0x14200 aiodoned aiodoned 1048 110487 0 0 3 0x14200 syncer update 29484 115720 0 0 3 0x14200 cleaner cleaner 13946 256820 0 0 3 0x14200 reaper reaper 41388 232978 0 0 3 0x14200 pgdaemon pagedaemon 34833 96718 0 0 3 0x14200 bored viomb 45980 513982 0 0 3 0x40014200 acpi0 acpi0 85559 440447 0 0 3 0x40014200 idle1 36299 249304 0 0 3 0x14200 bored softnet1 22890 136661 0 0 3 0x14200 bored softnet0 42083 28065 0 0 3 0x14200 bored systqmp 73306 448137 0 0 3 0x14200 bored systq 9035 355094 0 0 3 0x14200 tmoslp softclockmp 51302 521611 0 0 3 0x40014200 tmoslp softclock 89499 143469 0 0 3 0x40014200 idle0 1 442070 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 25413 (syz-executor) thread 0xffff80003c4307f0 (248267) Process 18320 (syz-executor) thread 0xffff80002a272d08 (338124) ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10243 11157K 11352K 166960K 12011 0 pcb 17 14K 15K 166960K 109 0 rtable 186 7K 7K 166960K 450 0 pf 34 17K 19K 166960K 77 0 ifaddr 37 6K 7K 166960K 61 0 ifgroup 53 2K 2K 166960K 91 0 sysctl 4 1K 9K 166960K 11 0 counters 70 37K 37K 166960K 108 0 ioctlops 0 0K 4K 166960K 1548 0 iov 1 4K 12K 166960K 31 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1392 88K 88K 166960K 1764 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 5K 166960K 12 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 80 0 dirhash 12 2K 2K 166960K 42 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 17 61K 93K 166960K 664 0 sigio 0 0K 0K 166960K 83 0 proc 72 115K 196K 166960K 600 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 81 0 in_multi 77 5K 7K 166960K 127 0 ether_multi 1 0K 0K 166960K 8 0 mrt 1 0K 0K 166960K 3 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 247 1102K 1102K 166960K 247 0 exec 0 0K 1K 166960K 410 0 fusefs mount 1 32K 32K 166960K 1 0 pfkey data 0 0K 0K 166960K 3 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 266 181K 203K 166960K 8036 0 UVM aobj 11 2K 2K 166960K 13 0 pinsyscall 42 84K 101K 166960K 1770 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 47 0 NDP 12 0K 1K 166960K 42 0 temp 77 8652K 8720K 166960K 20030 0 kqueue 13 20K 28K 166960K 116 0 SYN cache 2 16K 16K 166960K 2 0 ddb{0}> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle plcache 128 26 0 0 1 0 1 1 0 8 0 rtpcb 120 102 0 99 1 0 1 1 0 8 0 rtentry 176 104 0 25 5 0 5 5 0 8 0 unpcb 144 494 0 477 4 3 1 4 0 8 0 syncache 336 7 0 7 2 2 0 1 0 8 0 tcpqe 32 2 0 2 2 2 0 1 0 8 0 tcpcb 736 275 0 269 13 6 7 7 0 8 6 arp 136 12 0 3 1 0 1 1 0 8 0 inpcb 328 754 0 743 13 6 7 7 0 8 5 nd6 144 19 0 6 1 0 1 1 0 8 0 pkpcb 40 2 0 2 1 1 0 1 0 8 0 kcovpl 48 8 0 0 1 0 1 1 0 8 0 ppxss 1192 17 0 15 2 1 1 1 0 8 0 pffrag 232 9 0 2 1 0 1 1 0 482 0 pffrnode 88 6 0 0 1 0 1 1 0 8 0 pffrent 40 14 0 7 1 0 1 1 0 8 0 pfosfp 40 1428 0 1005 5 0 5 5 0 8 0 pfosfpen 112 1428 0 714 21 0 21 21 0 8 0 pfstitem 24 47 0 12 1 0 1 1 0 8 0 pfstkey 128 47 0 12 2 0 2 2 0 8 0 pfstate 384 47 0 12 4 0 4 4 0 8 0 pfrule 1344 23 0 18 2 1 1 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 478 0 90 30 3 27 30 0 8 0 art_table 40 479 0 90 5 0 5 5 0 8 0 art_node 32 103 0 32 1 0 1 1 0 8 0 semupl 112 1 0 1 1 1 0 1 0 8 0 semapl 112 78 0 68 1 0 1 1 0 8 0 shmpl 112 10 0 2 1 0 1 1 0 8 0 dirhash 1024 39 0 22 3 0 3 3 0 8 0 dino2pl 256 2566 0 1065 96 1 95 96 0 8 0 ffsino 296 2566 0 1065 117 0 117 117 0 8 0 nchpl 144 3480 0 1791 64 0 64 64 0 8 0 rtmask 32 1 0 1 1 1 0 1 0 8 0 uvmvnodes 80 2875 0 0 59 0 59 59 0 8 0 vnodes 216 2875 0 0 160 0 160 160 0 8 0 namei 1024 11916 0 11916 3 2 1 2 0 8 1 percpumem 16 69 0 19 1 0 1 1 0 8 0 kstatmem 264 54 0 28 4 2 2 3 0 8 0 scsiplug 72 6 0 6 2 2 0 1 0 8 0 scxspl 216 17805 0 17805 15 14 1 8 1 8 1 plimitpl 152 128 0 108 1 0 1 1 0 8 0 sigapl 424 967 0 919 7 1 6 7 0 8 0 knotepl 120 311 0 0 10 0 10 10 0 8 0 kqueuepl 224 255 0 244 5 4 1 4 0 8 0 pipepl 344 255 0 227 9 6 3 9 0 8 0 fdescpl 528 950 0 919 3 0 3 3 0 8 0 filepl 160 5920 0 5627 25 10 15 20 0 8 2 lockfpl 104 292 0 289 2 1 1 2 0 8 0 lockfspl 48 129 0 126 1 0 1 1 0 8 0 sessionpl 144 27 0 19 1 0 1 1 0 8 0 pgrppl 48 44 0 28 1 0 1 1 0 8 0 ucredpl 104 772 0 759 1 0 1 1 0 8 0 zombiepl 144 921 0 919 1 0 1 1 0 8 0 processpl 1232 967 0 919 5 1 4 5 0 8 0 procpl 664 1946 0 1889 6 0 6 6 0 8 0 sosppl 168 3 0 3 1 1 0 1 0 8 0 sockpl 752 1368 0 1337 22 11 11 11 0 8 6 mcl64k 65536 4 0 0 1 0 1 1 0 8 0 mcl16k 16384 6 0 0 1 0 1 1 0 8 0 mcl12k 12288 2 0 0 1 0 1 1 0 8 0 mcl9k 9216 2 0 0 1 0 1 1 0 8 0 mcl8k 8192 6 0 0 1 0 1 1 0 8 0 mcl4k 4096 111 0 0 14 0 14 14 0 8 0 mcl2k2 2112 1 0 0 1 0 1 1 0 8 0 mcl2k 2048 30 0 0 4 0 4 4 0 8 0 mtagpl 96 2 0 0 1 0 1 1 0 8 0 mbufpl 256 188 0 0 12 0 12 12 0 8 0 bufpl 280 9251 0 3108 439 0 439 439 0 8 0 anonpl 32 13112 0 0 107 1 106 106 0 246 0 amapchunkpl 152 27481 0 26800 45 15 30 35 0 158 1 amappl16 200 4176 0 4054 35 28 7 25 0 8 0 amappl15 192 9 0 9 2 2 0 1 0 8 0 amappl14 184 122 0 110 1 0 1 1 0 8 0 amappl13 176 3 0 3 1 1 0 1 0 8 0 amappl12 168 1596 0 1565 3 1 2 2 0 8 0 amappl11 160 51 0 37 1 0 1 1 0 8 0 amappl10 152 7 0 6 1 0 1 1 0 8 0 amappl9 144 256 0 256 1 1 0 1 0 8 0 amappl8 136 22 0 19 1 0 1 1 0 8 0 amappl7 128 176 0 164 1 0 1 1 0 8 0 amappl6 120 177 0 174 1 0 1 1 0 8 0 amappl5 112 124 0 115 1 0 1 1 0 8 0 amappl4 104 313 0 293 1 0 1 1 0 8 0 amappl3 96 4413 0 4308 4 1 3 3 0 8 0 amappl2 88 1210 0 1131 2 0 2 2 0 8 0 amappl1 80 11340 0 10732 15 0 15 15 0 8 0 amappl 88 7229 0 7039 5 0 5 5 0 92 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 6 0 6 1 1 0 1 0 8 0 dma128 128 256 0 256 3 3 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 12 0 2 1 0 1 1 0 8 0 uaddrrnd 24 950 0 919 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 950 0 919 1 0 1 1 0 8 0 vmmpekpl 168 9925 0 9889 3 0 3 3 0 8 0 vmmpepl 168 67385 0 65268 112 12 100 109 0 357 3 vmsppl 488 949 0 919 6 1 5 5 0 8 1 rwobjpl 80 24111 0 20168 85 3 82 85 0 8 0 pdppl 4096 1908 0 1838 102 30 72 86 0 8 2 pvpl 32 21938 0 0 178 1 177 177 0 265 0 pmappl 256 949 0 919 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 289 0 46 8 0 8 8 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace mtx_enter_try(18) at mtx_enter_try+0x7b sys/kern/kern_lock.c:290 mtx_enter(18) at mtx_enter+0x62 sys/kern/kern_lock.c:261 clockintr_unbind(ffff800001493230,1) at clockintr_unbind+0x56 sys/kern/kern_clockintr.c:375 dt_ioctl_record_stop(ffff800001478000) at dt_ioctl_record_stop+0xbc sys/dev/dt/dt_dev.c:582 dtclose(11e5f,82,2000,ffff8000fffef770) at dtclose+0x109 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(11e5f,82,2000,ffff8000fffef770) at dtclose+0x109 sys/dev/dt/dt_dev.c:232 spec_close(ffff80003c458df0) at spec_close+0x466 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd80622b21c8,82,fffffd80097fb548,ffff8000fffef770) at VOP_CLOSE+0x132 sys/kern/vfs_vops.c:156 vn_closefile(fffffd806b6a3240,ffff8000fffef770) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd806b6a3240,ffff8000fffef770) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd806b6a3240,ffff8000fffef770) at fdrop+0x121 sys/kern/kern_descrip.c:1280 closef(fffffd806b6a3240,ffff8000fffef770) at closef+0x192 sys/kern/kern_descrip.c:1264 fdfree(ffff8000fffef770) at fdfree+0x116 sys/kern/kern_descrip.c:1195 exit1(ffff8000fffef770,b,0,1) at exit1+0x576 sys/kern/kern_exit.c:215 sys_exit(ffff8000fffef770,ffff80003c459160,ffff80003c4590b0) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80003c459160) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c459160) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:746 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7ee99c28a0a0, count: -15 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffff8000299edff0) at x86_ipi_db+0x27 sys/arch/amd64/amd64/db_interface.c:394 x86_ipi_handler() at x86_ipi_handler+0xd9 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x27 __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x50 kd_curproc sys/dev/kcov.c:585 [inline] __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x50 sys/dev/kcov.c:153 __mp_lock(ffffffff8390bd68) at __mp_lock+0x1a3 __mp_lock_spin sys/kern/kern_lock.c:134 [inline] __mp_lock(ffffffff8390bd68) at __mp_lock+0x1a3 sys/kern/kern_lock.c:165 __mp_acquire_count(ffffffff8390bd68,1) at __mp_acquire_count+0x58 sys/kern/kern_lock.c:-1 sleep_finish(ffffffffffffffff,1) at sleep_finish+0x2d8 sys/kern/kern_synch.c:367 biowait(fffffd805e30c468) at biowait+0xc6 sys/kern/vfs_bio.c:1242 bwrite(fffffd805e30c468) at bwrite+0x2e7 sys/kern/vfs_bio.c:754 ffs_write(ffff800036be7680) at ffs_write+0x810 sys/ufs/ffs/ffs_vnops.c:377 VOP_WRITE(fffffd806b2021b0,ffff800036be7838,7,fffffd80097fb548) at VOP_WRITE+0x101 sys/kern/vfs_vops.c:245 vn_write(fffffd806b7fe4a0,ffff800036be7838,0) at vn_write+0x1d3 sys/kern/vfs_vnops.c:408 dofilewritev(ffff80003c4307f0,5,ffff800036be7838,0,ffff800036be78f0) at dofilewritev+0x242 sys/kern/sys_generic.c:380 sys_write(ffff80003c4307f0,ffff800036be79a0,ffff800036be78f0) at sys_write+0xa2 sys/kern/sys_generic.c:300 end trace frame: 0xffff800036be7990, count: 0 ddb{1}> trace x86_ipi_db(ffff8000299edff0) at x86_ipi_db+0x27 sys/arch/amd64/amd64/db_interface.c:394 x86_ipi_handler() at x86_ipi_handler+0xd9 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x27 __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x50 kd_curproc sys/dev/kcov.c:585 [inline] __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x50 sys/dev/kcov.c:153 __mp_lock(ffffffff8390bd68) at __mp_lock+0x1a3 __mp_lock_spin sys/kern/kern_lock.c:134 [inline] __mp_lock(ffffffff8390bd68) at __mp_lock+0x1a3 sys/kern/kern_lock.c:165 __mp_acquire_count(ffffffff8390bd68,1) at __mp_acquire_count+0x58 sys/kern/kern_lock.c:-1 sleep_finish(ffffffffffffffff,1) at sleep_finish+0x2d8 sys/kern/kern_synch.c:367 biowait(fffffd805e30c468) at biowait+0xc6 sys/kern/vfs_bio.c:1242 bwrite(fffffd805e30c468) at bwrite+0x2e7 sys/kern/vfs_bio.c:754 ffs_write(ffff800036be7680) at ffs_write+0x810 sys/ufs/ffs/ffs_vnops.c:377 VOP_WRITE(fffffd806b2021b0,ffff800036be7838,7,fffffd80097fb548) at VOP_WRITE+0x101 sys/kern/vfs_vops.c:245 vn_write(fffffd806b7fe4a0,ffff800036be7838,0) at vn_write+0x1d3 sys/kern/vfs_vnops.c:408 dofilewritev(ffff80003c4307f0,5,ffff800036be7838,0,ffff800036be78f0) at dofilewritev+0x242 sys/kern/sys_generic.c:380 sys_write(ffff80003c4307f0,ffff800036be79a0,ffff800036be78f0) at sys_write+0xa2 sys/kern/sys_generic.c:300 syscall(ffff800036be79a0) at syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff800036be79a0) at syscall+0xbd4 sys/arch/amd64/amd64/trap.c:746 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x2a32636de70, count: -16