…:è}ÖË F| è‰IE7ñ׊¦ *¼¥Þ+¬ºc`ŠIæ^Á á?žˆS.VÃc*²ù_]qDœè3nõôLèrêBb€uvm_fault(0xffffffff83a16290, 0xffff800029ee6000, 0, 2) -> e kernel: page fault trap, code=2 Stopped at kcov_remote_enter+0x122: movq $0,0(%rcx) TID PID UID PRFLAGS PFLAGS CPU COMMAND * 60525 71104 0 0 0 0 syz-executor kcov_remote_enter(0,ffff80002a79ed10) at kcov_remote_enter+0x122 sys/dev/kcov.c:670 timeout_run(ffffffff838f9fb0,ffff80002a7365d0) at timeout_run+0xdf sys/kern/kern_timeout.c:696 softclock_process_tick_timeout(ffff80002a7365d0,0) at softclock_process_tick_timeout+0x230 sys/kern/kern_timeout.c:756 softclock(0) at softclock+0x152 sys/kern/kern_timeout.c:788 softintr_dispatch(0) at softintr_dispatch+0xf9 sys/kern/kern_softintr.c:87 dosoftint(0) at dosoftint+0x48 sys/arch/amd64/amd64/intr.c:862 Xsoftclock() at Xsoftclock+0x27 end of kernel end trace frame: 0x7d39425542d0, count: 8 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(0xffffffff83a16290, 0xffff800029ee6000, 0, 2) -> e ddb> trace kcov_remote_enter(0,ffff80002a79ed10) at kcov_remote_enter+0x122 sys/dev/kcov.c:670 timeout_run(ffffffff838f9fb0,ffff80002a7365d0) at timeout_run+0xdf sys/kern/kern_timeout.c:696 softclock_process_tick_timeout(ffff80002a7365d0,0) at softclock_process_tick_timeout+0x230 sys/kern/kern_timeout.c:756 softclock(0) at softclock+0x152 sys/kern/kern_timeout.c:788 softintr_dispatch(0) at softintr_dispatch+0xf9 sys/kern/kern_softintr.c:87 dosoftint(0) at dosoftint+0x48 sys/arch/amd64/amd64/intr.c:862 Xsoftclock() at Xsoftclock+0x27 end of kernel end trace frame: 0x7d39425542d0, count: -7 ddb> show registers rdi 0xffffffff rsi 0xffff800000c16c00 rbp 0xffff80003c995230 rbx 0xffff80002a79ed10 rdx 0xffff800033cbfca8 rcx 0xffff800029ee6000 rax 0xfffffd806cadade0 r8 0 r9 0 r10 0x3d8c190c1d210ad r11 0xa5430a490f0e7574 r12 0xffffffff82a97d80 endtsleep r13 0xffff80002a736538 r14 0xffff80002a79ed10 r15 0 rip 0xffffffff81ab1c72 kcov_remote_enter+0x122 cs 0x8 rflags 0x10297 __ALIGN_SIZE+0xf297 rsp 0xffff80003c995210 ss 0 kcov_remote_enter+0x122: movq $0,0(%rcx) ddb> show proc PROC (syz-executor) tid=60525 pid=71104 tcnt=2 stat=onproc flags process=0 proc=0 runpri=50, usrpri=50, slppri=17, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff80002a77d770,0xffff80002a77c028 process=0xffff800033cc1698 user=0xffff80003c990000, vmspace=0xfffffd800e1cf748 estcpu=36, cpticks=1, pctcpu=0.0, user=1, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND *71104 60525 38207 0 7 0 syz-executor 71104 298487 38207 0 2 0x4000000 syz-executor 1779 330221 88513 0 2 0 syz-executor 1779 232205 88513 0 3 0x4000080 fsleep syz-executor 97771 517129 49271 0 3 0x80 nanoslp syz-executor 97771 479180 49271 0 3 0x4000080 ttyout syz-executor 97771 404047 49271 0 3 0x4000080 fsleep syz-executor 34510 54775 93427 0 3 0x80 nanoslp syz-executor 34510 194315 93427 0 3 0x4000080 lockf syz-executor 34510 405021 93427 0 3 0x4000080 lockf syz-executor 34510 334342 93427 0 3 0x4000080 fsleep syz-executor 92540 122736 45823 0 3 0x80 nanoslp syz-executor 92540 207691 45823 0 3 0x4000080 ttyout syz-executor 92540 145890 45823 0 3 0x4000080 fsleep syz-executor 93544 460191 72025 0 3 0x80 nanoslp syz-executor 93544 136327 72025 0 3 0x4000080 kqsel syz-executor 93544 411972 72025 0 3 0x4000080 fsleep syz-executor 45115 89687 1780 0 3 0x80 nanoslp syz-executor 45115 4306 1780 0 3 0x4000080 kqsel syz-executor 16700 518079 1 0 3 0x100083 ttyopn getty 6090 405814 0 0 3 0x14280 nfsidl nfsio 28526 10077 0 0 3 0x14280 nfsidl nfsio 90439 520103 0 0 3 0x14280 nfsidl nfsio 8137 123034 0 0 3 0x14280 nfsidl nfsio 74024 516177 0 0 3 0x14280 nfsidl nfsio 10313 73644 0 0 3 0x14280 nfsidl nfsio 28439 485144 0 0 3 0x14280 nfsidl nfsio 27782 136417 0 0 3 0x14280 nfsidl nfsio 54598 259902 0 0 3 0x14280 nfsidl nfsio 55251 273916 0 0 3 0x14280 nfsidl nfsio 61630 273735 0 0 3 0x14280 nfsidl nfsio 86924 59350 0 0 3 0x14280 nfsidl nfsio 26698 85590 0 0 3 0x14280 nfsidl nfsio 52283 410889 0 0 3 0x14280 nfsidl nfsio 36663 439317 0 0 3 0x14280 nfsidl nfsio 23724 220369 0 0 3 0x14280 nfsidl nfsio 40079 390241 0 0 3 0x14280 nfsidl nfsio 82110 248626 0 0 3 0x14280 nfsidl nfsio 45963 93747 0 0 3 0x14280 nfsidl nfsio 41522 509325 0 0 3 0x14280 nfsidl nfsio 1780 381988 59232 0 3 0x82 nanoslp syz-executor 88513 243458 59232 0 3 0x82 nanoslp syz-executor 49271 308860 59232 0 3 0x82 nanoslp syz-executor 38207 332748 59232 0 3 0x82 nanoslp syz-executor 93427 127207 59232 0 3 0x82 nanoslp syz-executor 73409 195007 59232 0 3 0x82 nanoslp syz-executor 45823 165609 59232 0 3 0x82 nanoslp syz-executor 72025 517361 59232 0 3 0x82 nanoslp syz-executor 59232 235154 90379 0 3 0x82 kqread syz-executor 90379 304189 33135 0 3 0x10008a sigsusp ksh 33135 427758 70853 0 3 0x98 kqread sshd-session 70853 212063 63815 0 3 0x92 kqread sshd-session 63815 40964 1 0 3 0x88 kqread sshd 31965 517418 42715 73 3 0x1100090 kqread syslogd 42715 341596 1 0 3 0x100082 sbwait syslogd 78765 47021 1 0 3 0x100080 kqread resolvd 18308 340573 7972 77 3 0x100092 kqread dhcpleased 44778 142206 7972 77 3 0x100092 kqread dhcpleased 7972 244693 1 0 3 0x80 kqread dhcpleased 87275 310572 0 0 2 0x14200 smr 22676 45134 0 0 2 0x14200 zerothread 69311 24612 0 0 3 0x14200 aiodoned aiodoned 77913 130235 0 0 3 0x14200 syncer update 54826 489003 0 0 3 0x14200 cleaner cleaner 67630 143832 0 0 3 0x14200 reaper reaper 47746 390306 0 0 3 0x14200 pgdaemon pagedaemon 75325 309156 0 0 3 0x14200 bored viomb 60552 346450 0 0 3 0x40014200 acpi0 acpi0 2478 472137 0 0 3 0x14200 bored softnet0 25613 27071 0 0 3 0x14200 bored systqmp 68029 353666 0 0 3 0x14200 bored systq 16108 283599 0 0 3 0x40014200 tmoslp softclock 2801 276580 0 0 3 0x40014200 idle0 1 63331 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 11097 12387K 12387K 166960K 12885 0 pcb 17 16K 18K 166960K 237 0 rtable 218 15K 16K 166960K 505 0 pf 32 13K 14K 166960K 74 0 ifaddr 38 6K 7K 166960K 67 0 ifgroup 54 2K 2K 166960K 108 0 sysctl 3 1K 9K 166960K 12 0 counters 34 17K 18K 166960K 57 0 ioctlops 0 0K 4K 166960K 340 0 iov 0 0K 17K 166960K 117 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1370 86K 86K 166960K 1979 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 9K 166960K 17 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 57 0 dirhash 12 2K 2K 166960K 21 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 18 65K 93K 166960K 857 0 sigio 0 0K 0K 166960K 8 0 proc 60 59K 83K 166960K 593 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 82 0 in_multi 80 6K 7K 166960K 117 0 ether_multi 1 0K 0K 166960K 4 0 mrt 1 0K 0K 166960K 28 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 259 1155K 1155K 166960K 259 0 exec 0 0K 1K 166960K 554 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 236 151K 173K 166960K 9274 0 UVM aobj 56 2K 2K 166960K 57 0 pinsyscall 39 78K 94K 166960K 1975 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 29 0 NDP 12 0K 2K 166960K 46 0 temp 77 9116K 9173K 166960K 16033 0 kqueue 15 24K 30K 166960K 183 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 120 153 0 149 3 0 3 3 0 8 2 rtentry 136 128 0 43 5 0 5 5 0 8 0 unpcb 144 467 0 452 3 0 3 3 0 8 2 syncache 336 10 0 10 1 0 1 1 0 8 1 tcpcb 736 267 0 262 7 0 7 7 0 8 6 arp 96 18 0 2 1 0 1 1 0 8 0 ipq 40 4 0 0 1 0 1 1 0 8 0 ipqe 40 8 0 3 1 0 1 1 0 8 0 inpcb 328 881 0 870 9 0 9 9 0 8 7 ip6q 72 2 0 1 1 0 1 1 0 8 0 ip6af 40 3 0 2 1 0 1 1 0 8 0 nd6 112 29 0 9 1 0 1 1 0 8 0 pkpcb 40 8 0 7 1 0 1 1 0 8 0 kcovpl 48 8 0 0 1 0 1 1 0 8 0 ppxss 1072 17 0 17 1 0 1 1 0 8 1 pppxif 1416 1 0 1 1 0 1 1 0 8 1 pfsrclim 320 1 0 1 1 0 1 1 0 8 1 rttmr 136 4 0 4 1 0 1 1 0 8 1 art_heap8 4096 3 0 0 3 0 3 3 0 8 0 art_heap4 256 585 0 201 32 0 32 32 0 8 5 art_table 40 588 0 201 6 0 6 6 0 8 1 art_node 32 126 0 49 1 0 1 1 0 8 0 sysvmsgpl 40 8 0 4 1 0 1 1 0 8 0 semapl 72 49 0 39 1 0 1 1 0 8 0 shmpl 112 54 0 1 2 0 2 2 0 8 0 dirhash 1024 23 0 6 3 0 3 3 0 8 0 dino2pl 256 3087 0 1627 92 0 92 92 0 8 0 ffsino 256 3087 0 1627 92 0 92 92 0 8 0 nchpl 144 4391 0 2690 64 0 64 64 0 8 0 rtmask 32 3 0 3 1 0 1 1 0 8 1 vnodes 216 3439 0 0 192 0 192 192 0 8 0 namei 1024 15138 0 15138 2 0 2 2 0 8 2 kstatmem 264 61 0 36 2 0 2 2 0 8 0 scsiplug 72 3 0 3 1 0 1 1 0 8 1 scxspl 216 18291 0 18291 8 0 8 8 1 8 8 plimitpl 152 364 0 345 1 0 1 1 0 8 0 sigapl 424 1178 0 1115 8 0 8 8 0 8 0 knotepl 120 31247 0 31191 16 6 10 16 0 8 8 kqueuepl 184 374 0 360 4 0 4 4 0 8 3 pipepl 304 172 0 145 3 0 3 3 0 8 0 fdescpl 448 1144 0 1114 5 0 5 5 0 8 1 filepl 120 6910 0 6679 11 0 11 11 0 8 2 lockfpl 104 756 0 747 1 0 1 1 0 8 0 lockfspl 48 162 0 156 1 0 1 1 0 8 0 sessionpl 144 58 0 50 1 0 1 1 0 8 0 pgrppl 48 74 0 58 1 0 1 1 0 8 0 ucredpl 104 1269 0 1258 1 0 1 1 0 8 0 zombiepl 144 1116 0 1115 1 0 1 1 0 8 0 processpl 1152 1178 0 1115 5 0 5 5 0 8 0 procpl 664 2236 0 2161 7 0 7 7 0 8 0 sosppl 176 2 0 2 1 0 1 1 0 8 1 sockpl 552 1545 0 1513 10 0 10 10 0 8 7 mcl64k 65536 73 0 72 1 0 1 1 0 8 0 mcl16k 16384 9 0 9 1 0 1 1 0 8 1 mcl12k 12288 3 0 3 1 0 1 1 0 8 1 mcl9k128 9344 1 0 1 1 0 1 1 0 8 1 mcl8k 8192 22 0 22 1 0 1 1 0 8 1 mcl4k 4096 3563 0 3505 14 0 14 14 0 8 6 mcl2k 2048 695 0 686 4 0 4 4 0 8 2 mtagpl 96 15 0 8 1 0 1 1 0 8 0 mbufpl 256 12208 0 12024 36 9 27 36 0 8 4 bufpl 280 6284 0 104 442 0 442 442 0 8 0 anonpl 24 209564 0 206063 61 0 61 61 0 186 21 amapchunkpl 152 33449 0 32930 30 0 30 30 0 158 8 amappl16 200 2631 0 2591 19 2 17 19 0 8 8 amappl15 192 8 0 8 1 0 1 1 0 8 1 amappl14 184 413 0 412 1 0 1 1 0 8 0 amappl13 176 117 0 107 1 0 1 1 0 8 0 amappl12 168 1388 0 1359 2 0 2 2 0 8 0 amappl11 160 2 0 2 1 0 1 1 0 8 1 amappl10 152 58 0 48 1 0 1 1 0 8 0 amappl9 144 273 0 273 1 0 1 1 0 8 1 amappl8 136 91 0 90 1 0 1 1 0 8 0 amappl7 128 146 0 134 1 0 1 1 0 8 0 amappl6 120 158 0 157 1 0 1 1 0 8 0 amappl5 112 155 0 146 1 0 1 1 0 8 0 amappl4 104 328 0 309 1 0 1 1 0 8 0 amappl3 96 6284 0 6161 4 0 4 4 0 8 0 amappl2 88 537 0 482 2 0 2 2 0 8 0 amappl1 80 13111 0 12552 13 0 13 13 0 8 1 amappl 88 8377 0 8203 5 0 5 5 0 92 0 uvmvnodes 80 145 0 0 3 0 3 3 0 8 0 dma4096 4096 2 0 2 1 0 1 1 0 8 1 dma2048 2048 1 0 1 1 0 1 1 0 8 1 dma1024 1024 1 0 0 1 0 1 1 0 8 0 dma256 256 8 0 8 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 8 0 8 1 0 1 1 0 8 1 dma16 16 18 0 17 1 0 1 1 0 8 0 aobjpl 72 56 0 1 1 0 1 1 0 8 0 uaddrrnd 24 1144 0 1114 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1144 0 1114 1 0 1 1 0 8 0 vmmpekpl 168 10096 0 10072 2 0 2 2 0 8 0 vmmpepl 168 78193 0 76301 96 0 96 96 0 357 11 vmsppl 368 1143 0 1114 4 0 4 4 0 8 1 rwobjpl 40 22272 0 21189 14 0 14 14 0 8 0 pdppl 4096 2294 0 2228 94 28 66 80 0 8 0 pvpl 32 553821 0 544113 138 0 138 138 0 265 32 pmappl 216 1143 0 1114 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 396 0 37 11 0 11 11 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace kcov_remote_enter(0,ffff80002a79ed10) at kcov_remote_enter+0x122 sys/dev/kcov.c:670 timeout_run(ffffffff838f9fb0,ffff80002a7365d0) at timeout_run+0xdf sys/kern/kern_timeout.c:696 softclock_process_tick_timeout(ffff80002a7365d0,0) at softclock_process_tick_timeout+0x230 sys/kern/kern_timeout.c:756 softclock(0) at softclock+0x152 sys/kern/kern_timeout.c:788 softintr_dispatch(0) at softintr_dispatch+0xf9 sys/kern/kern_softintr.c:87 dosoftint(0) at dosoftint+0x48 sys/arch/amd64/amd64/intr.c:862 Xsoftclock() at Xsoftclock+0x27 end of kernel end trace frame: 0x7d39425542d0, count: -7 ddb> machine ddbcpu 1 No such command ddb> trace kcov_remote_enter(0,ffff80002a79ed10) at kcov_remote_enter+0x122 sys/dev/kcov.c:670 timeout_run(ffffffff838f9fb0,ffff80002a7365d0) at timeout_run+0xdf sys/kern/kern_timeout.c:696 softclock_process_tick_timeout(ffff80002a7365d0,0) at softclock_process_tick_timeout+0x230 sys/kern/kern_timeout.c:756 softclock(0) at softclock+0x152 sys/kern/kern_timeout.c:788 softintr_dispatch(0) at softintr_dispatch+0xf9 sys/kern/kern_softintr.c:87 dosoftint(0) at dosoftint+0x48 sys/arch/amd64/amd64/intr.c:862 Xsoftclock() at Xsoftclock+0x27 end of kernel end trace frame: 0x7d39425542d0, count: -7