uvm_fault(0xfffffd806b79e7c0, 0x0, 0, 1) -> e kernel: page fault trap, code=0 Stopped at dt_ioctl_record_stop+0x108: movq 0(%r14),%r14 TID PID UID PRFLAGS PFLAGS CPU COMMAND 213960 35282 0 0x1000 0x4080000 1 syz-executor dt_ioctl_record_stop(ffff80000148b000) at dt_ioctl_record_stop+0x108 sys/dev/dt/dt_dev.c:586 dtclose(11e5f,81,2000,ffff80002a322fd0) at dtclose+0x109 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(11e5f,81,2000,ffff80002a322fd0) at dtclose+0x109 sys/dev/dt/dt_dev.c:232 spec_close(ffff800038821190) at spec_close+0x466 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd805cdec700,81,fffffd80097fb3a8,ffff80002a322fd0) at VOP_CLOSE+0x132 sys/kern/vfs_vops.c:156 vn_closefile(fffffd805dca41e8,ffff80002a322fd0) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd805dca41e8,ffff80002a322fd0) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd805dca41e8,ffff80002a322fd0) at fdrop+0x121 sys/kern/kern_descrip.c:1280 closef(fffffd805dca41e8,ffff80002a322fd0) at closef+0x192 sys/kern/kern_descrip.c:1264 fdfree(ffff80002a322fd0) at fdfree+0x116 sys/kern/kern_descrip.c:1195 exit1(ffff80002a322fd0,0,0,1) at exit1+0x576 sys/kern/kern_exit.c:215 sys_exit(ffff80002a322fd0,ffff800038821500,ffff800038821450) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff800038821500) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff800038821500) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:746 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x79ca7ea48420, count: 3 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(0xfffffd806b79e7c0, 0x0, 0, 1) -> e ddb{0}> trace dt_ioctl_record_stop(ffff80000148b000) at dt_ioctl_record_stop+0x108 sys/dev/dt/dt_dev.c:586 dtclose(11e5f,81,2000,ffff80002a322fd0) at dtclose+0x109 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(11e5f,81,2000,ffff80002a322fd0) at dtclose+0x109 sys/dev/dt/dt_dev.c:232 spec_close(ffff800038821190) at spec_close+0x466 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd805cdec700,81,fffffd80097fb3a8,ffff80002a322fd0) at VOP_CLOSE+0x132 sys/kern/vfs_vops.c:156 vn_closefile(fffffd805dca41e8,ffff80002a322fd0) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd805dca41e8,ffff80002a322fd0) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd805dca41e8,ffff80002a322fd0) at fdrop+0x121 sys/kern/kern_descrip.c:1280 closef(fffffd805dca41e8,ffff80002a322fd0) at closef+0x192 sys/kern/kern_descrip.c:1264 fdfree(ffff80002a322fd0) at fdfree+0x116 sys/kern/kern_descrip.c:1195 exit1(ffff80002a322fd0,0,0,1) at exit1+0x576 sys/kern/kern_exit.c:215 sys_exit(ffff80002a322fd0,ffff800038821500,ffff800038821450) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff800038821500) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff800038821500) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:746 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x79ca7ea48420, count: -12 ddb{0}> show registers rdi 0 rsi 0 rbp 0xffff8000388210c0 rbx 0x1 rdx 0 rcx 0xffff80002a322fd0 rax 0xffffffff83833028 dt_prov_syscall r8 0 r9 0 r10 0xd5027be27c4af096 r11 0x222eadec045dd45f r12 0 r13 0 r14 0 r15 0xffff80000151ba00 rip 0xffffffff826259b8 dt_ioctl_record_stop+0x108 cs 0x8 rflags 0x10207 __ALIGN_SIZE+0xf207 rsp 0xffff800038821090 ss 0x10 dt_ioctl_record_stop+0x108: movq 0(%r14),%r14 ddb{0}> show proc PROC (syz-executor) tid=173851 pid=4390 tcnt=0 stat=onproc flags process=1008 proc=2000 runpri=86, usrpri=86, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0xffff80002a322fd0 scnt=-1 ecnt=1 forw=0xffffffffffffffff, list=0xffff80002a322aa0,0xffff800032c0b4f8 process=0xffff80003c4e9838 user=0xffff80003881c000, vmspace=0xfffffd806b79e7c0 estcpu=36, cpticks=4, pctcpu=0.0, user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 35282 399792 28782 0 3 0x3000 suspend syz-executor 35282 213960 28782 0 7 0x4081000 syz-executor 35282 405539 28782 0 3 0x4081000 inode syz-executor 42327 73190 48019 0 3 0x80 nanoslp syz-executor 42327 300655 48019 0 3 0x4000080 ttyin syz-executor 42327 121575 48019 0 3 0x4000080 fsleep syz-executor 44555 164200 40545 0 3 0x80 nanoslp syz-executor 44555 456188 40545 0 3 0x4000080 kqsel syz-executor 44555 460784 40545 0 3 0x4000080 fsleep syz-executor 44555 338441 40545 0 3 0x4000080 fsleep syz-executor 21770 220329 54734 0 3 0x80 nanoslp syz-executor 21770 434293 54734 0 3 0x4000080 ttyin syz-executor 21770 271173 54734 0 3 0x4000080 fsleep syz-executor 21770 185514 54734 0 3 0x4000080 fsleep syz-executor 28782 167243 70424 0 3 0x82 nanoslp syz-executor 54734 427441 70424 0 3 0x82 nanoslp syz-executor 74311 24654 0 0 3 0x14200 bored sosplice 40545 414461 70424 0 3 0x82 nanoslp syz-executor 41966 17384 70424 0 3 0x82 nanoslp syz-executor 87854 293257 70424 0 3 0x82 nanoslp syz-executor 23726 420569 70424 0 3 0x82 wait syz-executor 12042 202365 70424 0 3 0x82 nanoslp syz-executor 48019 247135 70424 0 3 0x82 nanoslp syz-executor 70424 16193 32453 0 3 0x82 kqread syz-executor 32453 501296 40082 0 3 0x10008a sigsusp ksh 40082 141379 23006 0 3 0x98 kqread sshd-session 23006 319361 71893 0 3 0x92 kqread sshd-session 22586 84721 1 0 3 0x100083 ttyin getty 71893 290229 1 0 3 0x88 kqread sshd 29691 368212 73101 74 3 0x1100092 bpf pflogd 73101 331423 1 0 3 0x80 sbwait pflogd 36654 130843 20643 73 3 0x1100090 kqread syslogd 20643 97920 1 0 3 0x100082 sbwait syslogd 22884 158082 1 0 3 0x100080 kqread resolvd 97270 261668 9811 77 3 0x100092 kqread dhcpleased 15984 158226 9811 77 3 0x100092 kqread dhcpleased 9811 294581 1 0 3 0x80 kqread dhcpleased 62715 141579 0 0 3 0x14200 pause smr 77100 62077 0 0 3 0x14200 pgzero zerothread 96590 319255 0 0 3 0x14200 aiodoned aiodoned 30932 167668 0 0 3 0x14200 syncer update 38567 218412 0 0 3 0x14200 cleaner cleaner 73306 280655 0 0 3 0x14200 reaper reaper 37256 279576 0 0 3 0x14200 pgdaemon pagedaemon 80269 231115 0 0 3 0x14200 bored viomb 35822 174353 0 0 3 0x40014200 acpi0 acpi0 22726 104488 0 0 3 0x40014200 idle1 57514 152440 0 0 3 0x14200 bored softnet7 72402 185751 0 0 3 0x14200 bored softnet6 16633 339893 0 0 3 0x14200 bored softnet5 26087 132934 0 0 3 0x14200 bored softnet4 19041 105783 0 0 3 0x14200 bored softnet3 23584 251403 0 0 3 0x14200 bored softnet2 66255 256144 0 0 3 0x14200 bored softnet1 54576 375163 0 0 3 0x14200 bored softnet0 3512 228753 0 0 3 0x14200 bored systqmp 82476 122034 0 0 3 0x14200 bored systq 79028 5560 0 0 3 0x14200 tmoslp softclockmp 51630 24166 0 0 3 0x40014200 tmoslp softclock 21868 440399 0 0 3 0x40014200 idle0 1 302509 0 0 3 0x82 wait init 0 0 -1 0 3 0x10010200 scheduler swapper ddb{0}> show all locks Process 35282 (syz-executor) thread 0xffff80002a322570 (213960) exclusive rrwlock inode r = 0 (0xfffffd806e31e670) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 rw_do_enter_write+0x419 sys/kern/kern_rwlock.c:320 #2 rrw_enter+0xc6 sys/kern/kern_rwlock.c:621 #3 VOP_LOCK+0xa3 sys/kern/vfs_vops.c:527 #4 vn_lock+0xa4 sys/kern/vfs_vnops.c:570 #5 vn_write+0x18f sys/kern/vfs_vnops.c:405 #6 dofilewritev+0x242 sys/kern/sys_generic.c:380 #7 sys_write+0xa2 sys/kern/sys_generic.c:300 #8 syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] #8 syscall+0xbd4 sys/arch/amd64/amd64/trap.c:746 #9 Xsyscall+0x128 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10239 11104K 11280K 166960K 12042 0 pcb 18 16K 18K 166960K 240 0 rtable 157 8K 8K 166960K 414 0 pf 39 18K 131089K 166960K 142 0 ifaddr 37 6K 7K 166960K 107 0 ifgroup 64 2K 2K 166960K 174 0 sysctl 4 1K 9K 166960K 11 0 counters 76 37K 38K 166960K 184 0 ioctlops 0 0K 4K 166960K 1684 0 iov 0 0K 16K 166960K 89 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1365 86K 86K 166960K 2022 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 9K 166960K 22 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 24 0 dirhash 12 2K 2K 166960K 24 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 18 65K 240K 166960K 1038 0 sigio 0 0K 0K 166960K 60 0 proc 72 115K 163K 166960K 703 0 subproc 72 4K 4K 166960K 94 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 141 0 in_multi 61 4K 7K 166960K 165 0 ether_multi 1 0K 0K 166960K 7 0 mrt 2 0K 0K 166960K 8 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 97 440K 440K 166960K 97 0 exec 0 0K 1K 166960K 585 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 266 160K 177K 166960K 11179 0 UVM aobj 12 2K 2K 166960K 12 0 pinsyscall 43 86K 101K 166960K 2180 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 55 0 NDP 14 0K 2K 166960K 71 0 temp 61 8651K 8747K 166960K 50699 0 kqueue 16 26K 30K 166960K 191 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 95 0 91 1 0 1 1 0 8 0 rtentry 176 151 0 92 5 0 5 5 0 8 0 unpcb 144 721 0 701 6 5 1 6 0 8 0 syncache 336 10 0 10 3 2 1 1 0 8 1 tcpqe 32 3 0 3 1 1 0 1 0 8 0 tcpcb 736 414 0 406 13 6 7 7 0 8 6 arp 128 19 0 11 1 0 1 1 0 8 0 inpcb 328 1080 0 1068 15 8 7 7 0 8 5 nd6 144 27 0 15 1 0 1 1 0 8 0 pkpcb 40 9 0 9 2 1 1 1 0 8 1 kcovpl 48 10 0 2 1 0 1 1 0 8 0 mppekey 1024 1 0 1 1 1 0 1 0 8 0 ppxss 1192 42 0 40 3 2 1 1 0 8 0 pppxif 1504 9 0 7 3 2 1 1 0 8 0 pffrag 232 10 0 4 1 0 1 1 0 482 0 pffrnode 88 7 0 2 1 0 1 1 0 8 0 pffrent 40 47 0 40 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 87 0 20 1 0 1 1 0 8 0 pfstkey 128 87 0 20 3 0 3 3 0 8 0 pfstate 384 87 0 20 7 0 7 7 0 8 0 pfrule 1344 24 0 18 2 1 1 2 0 8 0 rttmr 136 1 0 1 1 1 0 1 0 8 0 art_heap8 4096 3 0 0 3 0 3 3 0 8 0 art_heap4 256 678 0 367 29 6 23 29 0 8 1 art_table 40 681 0 367 5 0 5 5 0 8 0 art_node 32 151 0 98 1 0 1 1 0 8 0 sysvmsgpl 40 15 0 5 1 0 1 1 0 8 0 semupl 112 2 0 2 1 1 0 1 0 8 0 semapl 112 22 0 12 1 0 1 1 0 8 0 shmpl 112 9 0 0 1 0 1 1 0 8 0 dirhash 1024 25 0 8 3 0 3 3 0 8 0 dino2pl 256 3332 0 1822 95 0 95 95 0 8 0 ffsino 296 3332 0 1822 117 0 117 117 0 8 0 nchpl 144 4749 0 3044 64 0 64 64 0 8 0 rtmask 32 6 0 6 3 2 1 1 0 8 1 uvmvnodes 80 3666 0 0 75 0 75 75 0 8 0 vnodes 216 3666 0 0 204 0 204 204 0 8 0 namei 1024 16179 0 16179 4 3 1 2 0 8 1 percpumem 16 107 0 54 1 0 1 1 0 8 0 kstatmem 264 106 0 74 3 0 3 3 0 8 0 acpiwqpl 32 1 0 1 1 0 1 1 1 8 1 scsiplug 72 9 0 9 3 2 1 1 0 8 1 scxspl 216 22878 0 22878 7 6 1 5 1 8 1 plimitpl 152 347 0 328 1 0 1 1 0 8 0 sigapl 424 1351 0 1296 9 0 9 9 0 8 1 knotepl 120 415 0 0 13 0 13 13 0 8 0 kqueuepl 224 554 0 539 7 5 2 5 0 8 0 pipepl 344 187 0 159 3 0 3 3 0 8 0 fdescpl 528 1306 0 1274 3 0 3 3 0 8 0 filepl 160 8293 0 8048 22 8 14 18 0 8 3 lockfpl 104 410 0 408 1 0 1 1 0 8 0 lockfspl 48 125 0 123 1 0 1 1 0 8 0 sessionpl 144 29 0 20 1 0 1 1 0 8 0 pgrppl 48 58 0 41 1 0 1 1 0 8 0 ucredpl 104 1253 0 1239 1 0 1 1 0 8 0 zombiepl 144 1479 0 1474 1 0 1 1 0 8 0 processpl 1232 1351 0 1296 7 1 6 7 0 8 0 procpl 664 2900 0 2835 9 0 9 9 0 8 2 sosppl 168 11 0 11 3 2 1 1 0 8 1 sockpl 752 1932 0 1895 30 19 11 23 0 8 7 mcl64k 65536 5 0 0 1 0 1 1 0 8 0 mcl16k 16384 4 0 0 1 0 1 1 0 8 0 mcl12k 12288 1 0 0 1 0 1 1 0 8 0 mcl8k 8192 2 0 0 1 0 1 1 0 8 0 mcl4k 4096 121 0 0 16 0 16 16 0 8 0 mcl2k2 2112 2 0 0 1 0 1 1 0 8 0 mcl2k 2048 34 0 0 5 0 5 5 0 8 0 mtagpl 96 4 0 0 1 0 1 1 0 8 0 mbufpl 256 212 0 0 13 0 13 13 0 8 0 bufpl 280 8791 0 2648 440 0 440 440 0 8 0 anonpl 32 10376 0 0 84 0 84 84 0 246 0 amapchunkpl 152 37315 0 36747 43 10 33 33 0 158 10 amappl16 200 4124 0 4016 28 16 12 23 0 8 6 amappl15 192 7 0 7 1 1 0 1 0 8 0 amappl14 184 127 0 115 1 0 1 1 0 8 0 amappl13 176 5 0 5 2 2 0 1 0 8 0 amappl12 168 1981 0 1948 3 1 2 2 0 8 0 amappl11 160 76 0 62 1 0 1 1 0 8 0 amappl10 152 27 0 26 2 1 1 1 0 8 0 amappl9 144 254 0 253 1 0 1 1 0 8 0 amappl8 136 26 0 24 1 0 1 1 0 8 0 amappl7 128 137 0 124 1 0 1 1 0 8 0 amappl6 120 215 0 212 1 0 1 1 0 8 0 amappl5 112 132 0 122 1 0 1 1 0 8 0 amappl4 104 337 0 317 1 0 1 1 0 8 0 amappl3 96 7293 0 7165 5 1 4 4 0 8 0 amappl2 88 704 0 642 2 0 2 2 0 8 0 amappl1 80 13001 0 12404 17 2 15 16 0 8 0 amappl 88 10284 0 10092 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 128 258 0 258 4 3 1 1 0 8 1 dma64 64 7 0 7 2 2 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 11 0 0 1 0 1 1 0 8 0 uaddrrnd 24 1306 0 1274 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1306 0 1274 1 0 1 1 0 8 0 vmmpekpl 168 12540 0 12500 3 0 3 3 0 8 0 vmmpepl 168 88036 0 85887 109 2 107 109 0 357 12 vmsppl 488 1305 0 1274 5 0 5 5 0 8 0 rwobjpl 80 28685 0 23967 98 1 97 97 0 8 0 pdppl 4096 2619 0 2548 109 38 71 83 0 8 0 pvpl 32 17688 0 0 145 2 143 144 0 265 0 pmappl 256 1305 0 1274 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 303 0 58 8 0 8 8 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace dt_ioctl_record_stop(ffff80000148b000) at dt_ioctl_record_stop+0x108 sys/dev/dt/dt_dev.c:586 dtclose(11e5f,81,2000,ffff80002a322fd0) at dtclose+0x109 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(11e5f,81,2000,ffff80002a322fd0) at dtclose+0x109 sys/dev/dt/dt_dev.c:232 spec_close(ffff800038821190) at spec_close+0x466 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd805cdec700,81,fffffd80097fb3a8,ffff80002a322fd0) at VOP_CLOSE+0x132 sys/kern/vfs_vops.c:156 vn_closefile(fffffd805dca41e8,ffff80002a322fd0) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd805dca41e8,ffff80002a322fd0) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd805dca41e8,ffff80002a322fd0) at fdrop+0x121 sys/kern/kern_descrip.c:1280 closef(fffffd805dca41e8,ffff80002a322fd0) at closef+0x192 sys/kern/kern_descrip.c:1264 fdfree(ffff80002a322fd0) at fdfree+0x116 sys/kern/kern_descrip.c:1195 exit1(ffff80002a322fd0,0,0,1) at exit1+0x576 sys/kern/kern_exit.c:215 sys_exit(ffff80002a322fd0,ffff800038821500,ffff800038821450) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff800038821500) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff800038821500) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:746 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x79ca7ea48420, count: -12 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+0x33 kd_curproc sys/dev/kcov.c:585 [inline] __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x33 sys/dev/kcov.c:153 __mp_lock(ffffffff8387c130) at __mp_lock+0x1a3 __mp_lock_spin sys/kern/kern_lock.c:134 [inline] __mp_lock(ffffffff8387c130) at __mp_lock+0x1a3 sys/kern/kern_lock.c:165 __mp_acquire_count(ffffffff8387c130,1) 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(fffffd8078a7b6b0) at biowait+0xc6 sys/kern/vfs_bio.c:1242 bwrite(fffffd8078a7b6b0) at bwrite+0x2e7 sys/kern/vfs_bio.c:754 ffs2_balloc(fffffd806e31e5d0,488000,4000,fffffd80097fb3a8,2,ffff80003c4650b8) at ffs2_balloc+0x18b4 sys/ufs/ffs/ffs_balloc.c:701 ffs_write(ffff80003c465140) at ffs_write+0x4f9 sys/ufs/ffs/ffs_vnops.c:345 VOP_WRITE(fffffd8066c87618,ffff80003c4652f8,7,fffffd80097fb3a8) at VOP_WRITE+0x101 sys/kern/vfs_vops.c:245 vn_write(fffffd806b8e7b78,ffff80003c4652f8,0) at vn_write+0x1d3 sys/kern/vfs_vnops.c:408 dofilewritev(ffff80002a322570,7,ffff80003c4652f8,0,ffff80003c4653b0) at dofilewritev+0x242 sys/kern/sys_generic.c:380 end trace frame: 0xffff80003c465380, 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+0x33 kd_curproc sys/dev/kcov.c:585 [inline] __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x33 sys/dev/kcov.c:153 __mp_lock(ffffffff8387c130) at __mp_lock+0x1a3 __mp_lock_spin sys/kern/kern_lock.c:134 [inline] __mp_lock(ffffffff8387c130) at __mp_lock+0x1a3 sys/kern/kern_lock.c:165 __mp_acquire_count(ffffffff8387c130,1) 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(fffffd8078a7b6b0) at biowait+0xc6 sys/kern/vfs_bio.c:1242 bwrite(fffffd8078a7b6b0) at bwrite+0x2e7 sys/kern/vfs_bio.c:754 ffs2_balloc(fffffd806e31e5d0,488000,4000,fffffd80097fb3a8,2,ffff80003c4650b8) at ffs2_balloc+0x18b4 sys/ufs/ffs/ffs_balloc.c:701 ffs_write(ffff80003c465140) at ffs_write+0x4f9 sys/ufs/ffs/ffs_vnops.c:345 VOP_WRITE(fffffd8066c87618,ffff80003c4652f8,7,fffffd80097fb3a8) at VOP_WRITE+0x101 sys/kern/vfs_vops.c:245 vn_write(fffffd806b8e7b78,ffff80003c4652f8,0) at vn_write+0x1d3 sys/kern/vfs_vnops.c:408 dofilewritev(ffff80002a322570,7,ffff80003c4652f8,0,ffff80003c4653b0) at dofilewritev+0x242 sys/kern/sys_generic.c:380 sys_write(ffff80002a322570,ffff80003c465460,ffff80003c4653b0) at sys_write+0xa2 sys/kern/sys_generic.c:300 syscall(ffff80003c465460) at syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c465460) at syscall+0xbd4 sys/arch/amd64/amd64/trap.c:746 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x26d897ae310, count: -17