uvm_fault(0xfffffd806c29d2e0, 0x18, 0, 1) -> e kernel: page fault trap, code=0 Stopped at mtx_enter+0x59: movq 0(%r14),%rax TID PID UID PRFLAGS PFLAGS CPU COMMAND *296566 95407 0 0 0x4000000 0 syz-executor mtx_enter(18) at mtx_enter+0x59 sys/kern/kern_lock.c:320 clockintr_unbind(ffff800001486430,1) at clockintr_unbind+0x56 sys/kern/kern_clockintr.c:375 dt_ioctl_record_stop(ffff80000143b080) at dt_ioctl_record_stop+0xbc sys/dev/dt/dt_dev.c:576 dtclose(11e5f,81,2000,ffff80003b9474b8) at dtclose+0xd5 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(11e5f,81,2000,ffff80003b9474b8) at dtclose+0xd5 sys/dev/dt/dt_dev.c:232 spec_close(ffff80003b941a40) at spec_close+0x45f sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd80686ed798,81,fffffd8007bfb680,ffff80003b9474b8) at VOP_CLOSE+0x12a sys/kern/vfs_vops.c:156 vn_closefile(fffffd806b6dcda8,ffff80003b9474b8) at vn_closefile+0x11d vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd806b6dcda8,ffff80003b9474b8) at vn_closefile+0x11d sys/kern/vfs_vnops.c:615 fdrop(fffffd806b6dcda8,ffff80003b9474b8) at fdrop+0x126 sys/kern/kern_descrip.c:1267 closef(fffffd806b6dcda8,ffff80003b9474b8) at closef+0x18d sys/kern/kern_descrip.c:1251 syscall(ffff80003b941ca0) at syscall+0x97e mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003b941ca0) at syscall+0x97e sys/arch/amd64/amd64/trap.c:579 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xab54f209db0, count: 4 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(0xfffffd806c29d2e0, 0x18, 0, 1) -> e ddb> trace mtx_enter(18) at mtx_enter+0x59 sys/kern/kern_lock.c:320 clockintr_unbind(ffff800001486430,1) at clockintr_unbind+0x56 sys/kern/kern_clockintr.c:375 dt_ioctl_record_stop(ffff80000143b080) at dt_ioctl_record_stop+0xbc sys/dev/dt/dt_dev.c:576 dtclose(11e5f,81,2000,ffff80003b9474b8) at dtclose+0xd5 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(11e5f,81,2000,ffff80003b9474b8) at dtclose+0xd5 sys/dev/dt/dt_dev.c:232 spec_close(ffff80003b941a40) at spec_close+0x45f sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd80686ed798,81,fffffd8007bfb680,ffff80003b9474b8) at VOP_CLOSE+0x12a sys/kern/vfs_vops.c:156 vn_closefile(fffffd806b6dcda8,ffff80003b9474b8) at vn_closefile+0x11d vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd806b6dcda8,ffff80003b9474b8) at vn_closefile+0x11d sys/kern/vfs_vnops.c:615 fdrop(fffffd806b6dcda8,ffff80003b9474b8) at fdrop+0x126 sys/kern/kern_descrip.c:1267 closef(fffffd806b6dcda8,ffff80003b9474b8) at closef+0x18d sys/kern/kern_descrip.c:1251 syscall(ffff80003b941ca0) at syscall+0x97e mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003b941ca0) at syscall+0x97e sys/arch/amd64/amd64/trap.c:579 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xab54f209db0, count: -11 ddb> show registers rdi 0 rsi 0 rbp 0xffff80003b9418f0 rbx 0xffffffff81315b00 dtclose rdx 0 rcx 0xffff80003b9474b8 rax 0xffff80003b9474b8 r8 0xffffffff810194c0 uvm_map_inentry_sp r9 0x1 r10 0 r11 0x4324b5c06eafa1a9 r12 0 r13 0 r14 0x18 r15 0 rip 0xffffffff8102f939 mtx_enter+0x59 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80003b9418c0 ss 0x10 mtx_enter+0x59: movq 0(%r14),%rax ddb> show proc PROC (syz-executor) tid=296566 pid=95407 tcnt=4 stat=onproc flags process=0 proc=4000000 runpri=32, usrpri=80, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff80003b9479d8,0xffff80003c95a040 process=0xffff800037915b48 user=0xffff80003b93c000, vmspace=0xfffffd806c29d2e0 estcpu=30, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 17184 18356 9770 0 2 0 syz-executor 41093 30740 88351 0 2 0 syz-executor 41093 214895 88351 0 3 0x4000080 kqsel syz-executor 95407 48417 64061 0 2 0 syz-executor *95407 296566 64061 0 7 0x4000000 syz-executor 95407 315884 64061 0 3 0x4000080 fsleep syz-executor 95407 128662 64061 0 3 0x4000080 fsleep syz-executor 98408 168966 31988 0 2 0 syz-executor 98408 256267 31988 0 3 0x4000080 sbwait syz-executor 98408 308312 31988 0 2 0x4000000 syz-executor 98408 270605 31988 0 3 0x4000080 fsleep syz-executor 44841 243460 0 0 3 0x14280 nfsidl nfsio 69099 243824 0 0 3 0x14280 nfsidl nfsio 88201 513571 0 0 3 0x14280 nfsidl nfsio 4995 127374 0 0 3 0x14280 nfsidl nfsio 63830 382369 0 0 3 0x14280 nfsidl nfsio 13950 279162 0 0 3 0x14280 nfsidl nfsio 92311 52100 0 0 3 0x14280 nfsidl nfsio 3223 97378 0 0 3 0x14280 nfsidl nfsio 75775 24630 0 0 3 0x14280 nfsidl nfsio 78294 136335 0 0 3 0x14280 nfsidl nfsio 29442 384123 0 0 3 0x14280 nfsidl nfsio 98295 513838 0 0 3 0x14280 nfsidl nfsio 96331 48467 0 0 3 0x14280 nfsidl nfsio 35326 492927 0 0 3 0x14280 nfsidl nfsio 14413 185433 0 0 3 0x14280 nfsidl nfsio 1418 218722 0 0 3 0x14280 nfsidl nfsio 38218 122325 0 0 3 0x14280 nfsidl nfsio 27749 20542 0 0 3 0x14280 nfsidl nfsio 81723 192267 0 0 3 0x14280 nfsidl nfsio 60885 59025 0 0 3 0x14280 nfsidl nfsio 55166 146339 0 0 3 0x14200 acct acct 38911 189267 1 0 3 0x100083 ttyin getty 71309 122601 0 0 3 0x14200 bored sosplice 31988 93443 47144 0 2 0xc82 syz-executor 33906 193307 47144 0 2 0x2 syz-executor 64061 128132 47144 0 2 0xc82 syz-executor 85419 473044 47144 0 2 0x2 syz-executor 30187 478778 47144 0 2 0x2 syz-executor 9770 454514 47144 0 2 0xc82 syz-executor 88351 181549 47144 0 2 0xc82 syz-executor 25644 40965 47144 0 2 0xc82 syz-executor 47144 259500 52004 0 3 0x82 kqread syz-executor 52004 194487 95391 0 3 0x10008a sigsusp ksh 95391 59833 55407 0 3 0x98 kqread sshd-session 55407 342140 89700 0 3 0x92 kqread sshd-session 89700 63990 1 0 3 0x88 kqread sshd 49684 9830 36151 73 3 0x1100090 kqread syslogd 36151 18733 1 0 3 0x100082 sbwait syslogd 11383 432770 1 0 3 0x100080 kqread resolvd 61958 228901 36126 77 3 0x100092 kqread dhcpleased 89536 519252 36126 77 3 0x100092 kqread dhcpleased 36126 111017 1 0 3 0x80 kqread dhcpleased 16357 152338 0 0 3 0x14200 bored smr 23757 506518 0 0 2 0x14200 zerothread 64069 7225 0 0 3 0x14200 aiodoned aiodoned 45939 3022 0 0 3 0x14200 syncer update 21917 413968 0 0 3 0x14200 cleaner cleaner 70435 5817 0 0 3 0x14200 reaper reaper 58509 122730 0 0 3 0x14200 pgdaemon pagedaemon 24048 282959 0 0 3 0x14200 bored viomb 89071 284257 0 0 3 0x40014200 acpi0 acpi0 20782 211969 0 0 3 0x14200 bored softnet3 33631 122394 0 0 3 0x14200 bored softnet2 44949 95412 0 0 3 0x14200 bored softnet1 19610 46409 0 0 2 0x14200 softnet0 18194 130574 0 0 3 0x14200 bored systqmp 40612 21929 0 0 3 0x14200 bored systq 72356 114589 0 0 2 0x40014200 softclock 52407 234263 0 0 3 0x40014200 idle0 1 398684 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 10189 11128K 11495K 166960K 11792 0 pcb 17 14K 16K 166960K 145 0 rtable 237 9K 9K 166960K 413 0 pf 32 13K 21K 166960K 51 0 ifaddr 40 7K 7K 166960K 53 0 ifgroup 50 2K 2K 166960K 73 0 sysctl 3 1K 9K 166960K 8 0 counters 32 17K 18K 166960K 42 0 ioctlops 0 0K 4K 166960K 64 0 iov 1 4K 16K 166960K 10 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1435 90K 91K 166960K 1822 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 5K 166960K 6 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 21 0 dirhash 12 2K 2K 166960K 15 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 15 53K 97K 166960K 462 0 sigio 0 0K 0K 166960K 4 0 proc 60 59K 124K 166960K 505 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 46 0 in_multi 97 7K 7K 166960K 118 0 ether_multi 1 0K 0K 166960K 6 0 mrt 0 0K 0K 166960K 1 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 2K 166960K 391 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 212 150K 165K 166960K 5725 0 UVM aobj 9 2K 2K 166960K 9 0 pinsyscall 36 72K 96K 166960K 1488 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 21 0 NDP 11 0K 2K 166960K 34 0 temp 50 8677K 8744K 166960K 10813 0 kqueue 13 20K 28K 166960K 77 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 65 0 62 1 0 1 1 0 8 0 rtentry 136 120 0 14 4 0 4 4 0 8 0 unpcb 144 451 0 434 6 5 1 6 0 8 0 syncache 336 3 0 3 1 1 0 1 0 8 0 tcpcb 808 158 0 153 8 7 1 8 0 8 0 arp 88 19 0 5 1 0 1 1 0 8 0 ipq 40 3 0 0 1 0 1 1 0 8 0 ipqe 40 3 0 0 1 0 1 1 0 8 0 inpcb 328 557 0 547 13 11 2 12 0 8 1 ip6q 72 1 0 1 1 1 0 1 0 8 0 ip6af 40 2 0 2 1 1 0 1 0 8 0 nd6 104 26 0 0 1 0 1 1 0 8 0 pkpcb 40 3 0 3 2 1 1 1 0 8 1 kcovpl 48 8 0 0 1 0 1 1 0 8 0 ppxss 1072 7 0 7 2 1 1 1 0 8 1 pfstscr 40 2 0 2 1 1 0 1 0 8 0 pfstitem 24 2 0 0 1 0 1 1 0 8 0 pfstkey 128 3 0 1 1 0 1 1 0 8 0 pfstate 384 2 0 1 1 0 1 1 0 8 0 pfrule 1344 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 256 468 0 10 29 0 29 29 0 8 0 art_table 32 471 0 10 4 0 4 4 0 8 0 art_node 16 117 0 21 1 0 1 1 0 8 0 sysvmsgpl 40 6 0 2 1 0 1 1 0 8 0 semapl 112 18 0 8 1 0 1 1 0 8 0 shmpl 112 6 0 0 1 0 1 1 0 8 0 dirhash 1024 19 0 2 3 0 3 3 0 8 0 dino2pl 256 2200 0 697 95 0 95 95 0 8 0 ffsino 248 2200 0 697 95 0 95 95 0 8 0 nchpl 144 2886 0 1208 63 0 63 63 0 8 0 rtmask 32 3 0 3 2 1 1 1 0 8 1 uvmvnodes 80 2583 0 0 53 0 53 53 0 8 0 vnodes 216 2583 0 0 144 0 144 144 0 8 0 namei 1024 9385 0 9383 2 1 1 2 0 8 0 kstatmem 264 36 0 14 2 0 2 2 0 8 0 scsiplug 72 2 0 2 1 1 0 1 0 8 0 scxspl 216 8674 0 8674 3 2 1 3 1 8 1 plimitpl 152 135 0 117 1 0 1 1 0 8 0 sigapl 424 762 0 697 9 1 8 8 0 8 0 knotepl 120 20088 0 20041 19 9 10 12 0 8 8 kqueuepl 184 176 0 166 4 3 1 4 0 8 0 pipepl 296 134 0 107 3 0 3 3 0 8 0 fdescpl 440 724 0 697 5 1 4 5 0 8 0 filepl 120 4518 0 4303 11 3 8 11 0 8 1 lockfpl 104 158 0 155 1 0 1 1 0 8 0 lockfspl 48 44 0 41 1 0 1 1 0 8 0 sessionpl 144 22 0 14 1 0 1 1 0 8 0 pgrppl 48 38 0 22 1 0 1 1 0 8 0 ucredpl 104 567 0 556 1 0 1 1 0 8 0 zombiepl 144 786 0 785 1 0 1 1 0 8 0 processpl 1160 762 0 697 5 0 5 5 0 8 0 procpl 656 1285 0 1213 8 1 7 7 0 8 0 sosppl 168 1 0 1 1 1 0 1 0 8 0 sockpl 528 1087 0 1055 11 8 3 11 0 8 0 mcl64k 65536 77 0 77 2 1 1 1 0 8 1 mcl8k 8192 8 0 8 2 1 1 1 0 8 1 mcl4k 4096 2853 0 2803 14 7 7 14 0 8 0 mcl2k 2048 465 0 461 3 2 1 3 0 8 0 mtagpl 96 17 0 6 1 0 1 1 0 8 0 mbufpl 256 7372 0 7173 14 0 14 14 0 8 0 bufpl 280 3042 0 127 209 0 209 209 0 8 0 anonpl 24 124691 0 121582 33 9 24 33 0 187 0 amapchunkpl 152 18029 0 17608 32 10 22 28 0 158 1 amappl16 200 2280 0 2253 5 2 3 5 0 8 0 amappl15 192 2 0 2 1 1 0 1 0 8 0 amappl14 184 103 0 93 1 0 1 1 0 8 0 amappl13 176 8 0 7 1 0 1 1 0 8 0 amappl12 168 1366 0 1339 3 1 2 3 0 8 0 amappl11 160 47 0 37 1 0 1 1 0 8 0 amappl10 152 7 0 7 1 1 0 1 0 8 0 amappl9 144 239 0 239 1 1 0 1 0 8 0 amappl8 136 35 0 33 1 0 1 1 0 8 0 amappl7 128 101 0 91 1 0 1 1 0 8 0 amappl6 120 195 0 192 1 0 1 1 0 8 0 amappl5 112 124 0 118 1 0 1 1 0 8 0 amappl4 104 294 0 278 1 0 1 1 0 8 0 amappl3 96 3427 0 3334 4 0 4 4 0 8 1 amappl2 88 619 0 565 2 0 2 2 0 8 0 amappl1 80 9250 0 8716 13 1 12 13 0 8 0 amappl 88 5023 0 4874 5 0 5 5 0 92 0 dma16384 16384 1 0 1 1 0 1 1 0 8 1 dma8192 8192 1 0 1 1 1 0 1 0 8 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 128 254 0 254 1 1 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 8 0 0 1 0 1 1 0 8 0 uaddrrnd 24 724 0 697 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 724 0 697 1 0 1 1 0 8 0 vmmpekpl 168 7119 0 7082 2 0 2 2 0 8 0 vmmpepl 168 51161 0 49437 86 2 84 84 0 357 1 vmsppl 360 723 0 697 4 1 3 4 0 8 0 rwobjpl 32 18380 0 14971 28 0 28 28 0 8 0 pdppl 4096 1455 0 1394 97 30 67 83 0 8 6 pvpl 32 318260 0 310155 101 20 81 99 0 265 2 pmappl 216 723 0 697 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 278 0 53 8 0 8 8 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace mtx_enter(18) at mtx_enter+0x59 sys/kern/kern_lock.c:320 clockintr_unbind(ffff800001486430,1) at clockintr_unbind+0x56 sys/kern/kern_clockintr.c:375 dt_ioctl_record_stop(ffff80000143b080) at dt_ioctl_record_stop+0xbc sys/dev/dt/dt_dev.c:576 dtclose(11e5f,81,2000,ffff80003b9474b8) at dtclose+0xd5 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(11e5f,81,2000,ffff80003b9474b8) at dtclose+0xd5 sys/dev/dt/dt_dev.c:232 spec_close(ffff80003b941a40) at spec_close+0x45f sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd80686ed798,81,fffffd8007bfb680,ffff80003b9474b8) at VOP_CLOSE+0x12a sys/kern/vfs_vops.c:156 vn_closefile(fffffd806b6dcda8,ffff80003b9474b8) at vn_closefile+0x11d vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd806b6dcda8,ffff80003b9474b8) at vn_closefile+0x11d sys/kern/vfs_vnops.c:615 fdrop(fffffd806b6dcda8,ffff80003b9474b8) at fdrop+0x126 sys/kern/kern_descrip.c:1267 closef(fffffd806b6dcda8,ffff80003b9474b8) at closef+0x18d sys/kern/kern_descrip.c:1251 syscall(ffff80003b941ca0) at syscall+0x97e mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003b941ca0) at syscall+0x97e sys/arch/amd64/amd64/trap.c:579 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xab54f209db0, count: -11 ddb> machine ddbcpu 1 No such command ddb> trace mtx_enter(18) at mtx_enter+0x59 sys/kern/kern_lock.c:320 clockintr_unbind(ffff800001486430,1) at clockintr_unbind+0x56 sys/kern/kern_clockintr.c:375 dt_ioctl_record_stop(ffff80000143b080) at dt_ioctl_record_stop+0xbc sys/dev/dt/dt_dev.c:576 dtclose(11e5f,81,2000,ffff80003b9474b8) at dtclose+0xd5 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(11e5f,81,2000,ffff80003b9474b8) at dtclose+0xd5 sys/dev/dt/dt_dev.c:232 spec_close(ffff80003b941a40) at spec_close+0x45f sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd80686ed798,81,fffffd8007bfb680,ffff80003b9474b8) at VOP_CLOSE+0x12a sys/kern/vfs_vops.c:156 vn_closefile(fffffd806b6dcda8,ffff80003b9474b8) at vn_closefile+0x11d vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd806b6dcda8,ffff80003b9474b8) at vn_closefile+0x11d sys/kern/vfs_vnops.c:615 fdrop(fffffd806b6dcda8,ffff80003b9474b8) at fdrop+0x126 sys/kern/kern_descrip.c:1267 closef(fffffd806b6dcda8,ffff80003b9474b8) at closef+0x18d sys/kern/kern_descrip.c:1251 syscall(ffff80003b941ca0) at syscall+0x97e mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003b941ca0) at syscall+0x97e sys/arch/amd64/amd64/trap.c:579 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xab54f209db0, count: -11