uvm_fault(0xfffffd806bf3fe70, 0x18, 0, 1) -> e kernel: page fault trap, code=0 Stopped at mtx_enter+0x6e: movq 0(%r14),%rax TID PID UID PRFLAGS PFLAGS CPU COMMAND mtx_enter(18) at mtx_enter+0x6e sys/kern/kern_lock.c:335 clockintr_unbind(ffff8000015a0130,1) at clockintr_unbind+0x56 sys/kern/kern_clockintr.c:375 dt_ioctl_record_stop(ffff800000b5d300) at dt_ioctl_record_stop+0xbc sys/dev/dt/dt_dev.c:582 dtclose(11e5f,1,2000,ffff80002a7f5a10) at dtclose+0xd9 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(11e5f,1,2000,ffff80002a7f5a10) at dtclose+0xd9 sys/dev/dt/dt_dev.c:232 spec_close(ffff80003c9e13a0) at spec_close+0x466 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd80696588a0,1,fffffd8007bfb888,ffff80002a7f5a10) at VOP_CLOSE+0x129 sys/kern/vfs_vops.c:156 vn_closefile(fffffd806aefb878,ffff80002a7f5a10) at vn_closefile+0x11d vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd806aefb878,ffff80002a7f5a10) at vn_closefile+0x11d sys/kern/vfs_vnops.c:615 fdrop(fffffd806aefb878,ffff80002a7f5a10) at fdrop+0x121 sys/kern/kern_descrip.c:1280 closef(fffffd806aefb878,ffff80002a7f5a10) at closef+0x190 sys/kern/kern_descrip.c:1264 fdfree(ffff80002a7f5a10) at fdfree+0x115 sys/kern/kern_descrip.c:1195 exit1(ffff80002a7f5a10,0,0,1) at exit1+0x576 sys/kern/kern_exit.c:215 sys_exit(ffff80002a7f5a10,ffff80003c9e1700,ffff80003c9e1650) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80003c9e1700) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c9e1700) at syscall+0x962 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7836e8fde2e0, count: 1 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(0xfffffd806bf3fe70, 0x18, 0, 1) -> e ddb> trace mtx_enter(18) at mtx_enter+0x6e sys/kern/kern_lock.c:335 clockintr_unbind(ffff8000015a0130,1) at clockintr_unbind+0x56 sys/kern/kern_clockintr.c:375 dt_ioctl_record_stop(ffff800000b5d300) at dt_ioctl_record_stop+0xbc sys/dev/dt/dt_dev.c:582 dtclose(11e5f,1,2000,ffff80002a7f5a10) at dtclose+0xd9 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(11e5f,1,2000,ffff80002a7f5a10) at dtclose+0xd9 sys/dev/dt/dt_dev.c:232 spec_close(ffff80003c9e13a0) at spec_close+0x466 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd80696588a0,1,fffffd8007bfb888,ffff80002a7f5a10) at VOP_CLOSE+0x129 sys/kern/vfs_vops.c:156 vn_closefile(fffffd806aefb878,ffff80002a7f5a10) at vn_closefile+0x11d vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd806aefb878,ffff80002a7f5a10) at vn_closefile+0x11d sys/kern/vfs_vnops.c:615 fdrop(fffffd806aefb878,ffff80002a7f5a10) at fdrop+0x121 sys/kern/kern_descrip.c:1280 closef(fffffd806aefb878,ffff80002a7f5a10) at closef+0x190 sys/kern/kern_descrip.c:1264 fdfree(ffff80002a7f5a10) at fdfree+0x115 sys/kern/kern_descrip.c:1195 exit1(ffff80002a7f5a10,0,0,1) at exit1+0x576 sys/kern/kern_exit.c:215 sys_exit(ffff80002a7f5a10,ffff80003c9e1700,ffff80003c9e1650) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80003c9e1700) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c9e1700) at syscall+0x962 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7836e8fde2e0, count: -14 ddb> show registers rdi 0 rsi 0 rbp 0xffff80003c9e1250 rbx 0 rdx 0 rcx 0xffff80002a7f5a10 rax 0xffff80002a7f5a00 r8 0xffffffffffffffff r9 0 r10 0xfae10c7ba2bbd20 r11 0xf77380dbdc6f2e26 r12 0x1 r13 0 r14 0x18 r15 0 rip 0xffffffff823fb4ce mtx_enter+0x6e cs 0x8 rflags 0x10297 __ALIGN_SIZE+0xf297 rsp 0xffff80003c9e1220 ss 0x10 mtx_enter+0x6e: movq 0(%r14),%rax ddb> show proc PROC (syz-executor) tid=330592 pid=52460 tcnt=0 stat=onproc flags process=1008 proc=2000 runpri=32, usrpri=50, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0xffff80002a7f5a10 scnt=-1 ecnt=1 forw=0xffffffffffffffff, list=0xffff80002a7f5248,0xffff80002a7f4560 process=0xffff8000ffff8498 user=0xffff80003c9dc000, vmspace=0xfffffd806bf3fe70 estcpu=36, cpticks=0, pctcpu=0.0, user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 1987 102105 15118 0 2 0 syz-executor 1987 189541 15118 0 2 0x4000000 syz-executor 94224 193774 66077 0 2 0 syz-executor 94224 449231 66077 0 3 0x4000080 fsleep syz-executor 27734 225295 12089 0 2 0 syz-executor 27734 425450 12089 0 3 0x4000080 kqsel syz-executor 27734 207620 12089 0 3 0x4000080 fsleep syz-executor 38910 263822 4044 0 2 0 syz-executor 38910 446096 4044 0 3 0x4000080 ttyopn syz-executor 21860 179930 21605 0 3 0x80 nanoslp syz-executor 21860 121797 21605 0 3 0x4000080 nanoslp syz-executor 21860 432276 21605 0 3 0x4000080 fsleep syz-executor 37561 425149 33552 0 2 0 syz-executor 37561 337996 33552 0 3 0x4000080 fsleep syz-executor 11861 452836 0 0 3 0x14200 bored sosplice 66077 89470 76446 0 3 0x82 nanoslp syz-executor 21605 39777 76446 0 3 0x82 nanoslp syz-executor 15118 458708 76446 0 3 0x82 nanoslp syz-executor 33552 342451 76446 0 3 0x82 nanoslp syz-executor 72404 223229 76446 0 3 0x82 nanoslp syz-executor 12089 437387 76446 0 3 0x82 nanoslp syz-executor 34231 61464 76446 0 3 0x82 wait syz-executor 4044 115701 76446 0 3 0x82 nanoslp syz-executor 76446 365808 12247 0 3 0x82 kqread syz-executor 12247 157911 54333 0 3 0x10008a sigsusp ksh 54333 419201 48562 0 3 0x98 kqread sshd-session 48562 283701 40383 0 3 0x92 kqread sshd-session 41679 365977 1 0 3 0x100083 ttyin getty 40383 458811 1 0 3 0x88 kqread sshd 25008 474677 12949 73 3 0x1100090 kqread syslogd 12949 441971 1 0 3 0x100082 sbwait syslogd 16528 300615 1 0 3 0x100080 kqread resolvd 25829 517470 57350 77 3 0x100092 kqread dhcpleased 21518 173882 57350 77 3 0x100092 kqread dhcpleased 57350 460354 1 0 3 0x80 kqread dhcpleased 43328 394028 0 0 3 0x14200 bored smr 71575 197437 0 0 2 0x14200 zerothread 97884 409365 0 0 3 0x14200 aiodoned aiodoned 82887 494390 0 0 3 0x14200 syncer update 73080 360131 0 0 3 0x14200 cleaner cleaner 33899 330485 0 0 3 0x14200 reaper reaper 75263 368465 0 0 3 0x14200 pgdaemon pagedaemon 93629 275857 0 0 3 0x14200 bored viomb 97344 316068 0 0 3 0x40014200 acpi0 acpi0 86785 437491 0 0 3 0x14200 bored softnet7 13908 475164 0 0 3 0x14200 bored softnet6 9228 376597 0 0 3 0x14200 bored softnet5 76971 179243 0 0 3 0x14200 bored softnet4 62682 115665 0 0 3 0x14200 bored softnet3 96590 162265 0 0 3 0x14200 bored softnet2 87938 263071 0 0 3 0x14200 bored softnet1 91070 388747 0 0 3 0x14200 bored softnet0 94061 280063 0 0 3 0x14200 bored systqmp 91575 322672 0 0 3 0x14200 bored systq 50793 69269 0 0 3 0x40014200 tmoslp softclock 68197 84358 0 0 3 0x40014200 idle0 1 349506 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 10193 11084K 12158K 166960K 11962 0 pcb 21 15K 16K 166960K 80 0 rtable 203 8K 9K 166960K 643 0 pf 27 12K 15K 166960K 64 0 ifaddr 34 6K 8K 166960K 64 0 ifgroup 42 1K 2K 166960K 85 0 sysctl 3 1K 9K 166960K 11 0 counters 30 17K 18K 166960K 53 0 ioctlops 0 0K 4K 166960K 76 0 iov 0 0K 16K 166960K 24 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1469 92K 93K 166960K 1728 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 5K 166960K 4 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 19 0 dirhash 12 2K 2K 166960K 21 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 18 65K 106K 166960K 453 0 sigio 0 0K 0K 166960K 7 0 proc 61 59K 83K 166960K 520 0 subproc 72 4K 4K 166960K 81 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 195 0 in_multi 76 5K 7K 166960K 127 0 ether_multi 1 0K 0K 166960K 5 0 mrt 1 0K 0K 166960K 6 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 1K 166960K 459 0 fusefs mount 1 32K 32K 166960K 1 0 pfkey data 0 0K 0K 166960K 2 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 236 151K 159K 166960K 5520 0 UVM aobj 13 3K 3K 166960K 13 0 pinsyscall 39 78K 91K 166960K 1497 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 15 0 NDP 9 0K 2K 166960K 41 0 temp 111 8637K 8714K 166960K 17031 0 kqueue 13 20K 32K 166960K 85 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 73 0 69 1 0 1 1 0 8 0 rtentry 136 185 0 104 4 0 4 4 0 8 0 unpcb 144 226 0 211 2 0 2 2 0 8 1 syncache 336 3 0 3 1 0 1 1 0 8 1 tcpcb 736 324 0 319 13 4 9 13 0 8 8 arp 88 14 0 4 1 0 1 1 0 8 0 ipq 40 1 0 0 1 0 1 1 0 8 0 ipqe 40 2 0 0 1 0 1 1 0 8 0 inpcb 328 662 0 649 12 2 10 12 0 8 8 nd6 104 19 0 6 1 0 1 1 0 8 0 pkpcb 40 9 0 9 1 0 1 1 0 8 1 kcovpl 48 9 0 1 1 0 1 1 0 8 0 mppekey 1024 1 0 1 1 0 1 1 0 8 1 ppxss 1072 18 0 18 1 0 1 1 0 8 1 pppxif 1384 2 0 2 1 0 1 1 0 8 1 pfstitem 24 4 0 0 1 0 1 1 0 8 0 pfstkey 128 8 0 4 1 0 1 1 0 8 0 pfstate 384 4 0 2 1 0 1 1 0 8 0 pfrule 1344 3 0 2 1 0 1 1 0 8 0 rttmr 136 1 0 1 1 0 1 1 0 8 1 art_heap8 4096 5 0 0 5 0 5 5 0 8 0 art_heap4 256 537 0 177 30 0 30 30 0 8 5 art_table 40 542 0 177 5 0 5 5 0 8 0 art_node 32 118 0 46 1 0 1 1 0 8 0 sysvmsgpl 40 2 0 1 1 0 1 1 0 8 0 semupl 112 1 0 1 1 0 1 1 0 8 1 semapl 112 16 0 6 1 0 1 1 0 8 0 shmpl 112 10 0 0 1 0 1 1 0 8 0 dirhash 1024 24 0 7 3 0 3 3 0 8 0 dino2pl 256 2113 0 610 95 0 95 95 0 8 0 ffsino 256 2113 0 610 95 0 95 95 0 8 0 nchpl 144 2705 0 1016 63 0 63 63 0 8 0 rtmask 32 3 0 3 1 0 1 1 0 8 1 uvmvnodes 80 2459 0 0 51 0 51 51 0 8 0 vnodes 216 2459 0 0 137 0 137 137 0 8 0 namei 1024 9088 0 9088 1 0 1 1 0 8 1 kstatmem 264 46 0 28 2 0 2 2 0 8 0 scsiplug 72 2 0 2 1 0 1 1 0 8 1 scxspl 216 11614 0 11614 8 0 8 8 1 8 8 plimitpl 152 118 0 102 1 0 1 1 0 8 0 sigapl 424 722 0 671 7 0 7 7 0 8 1 knotepl 120 15021 0 14974 22 12 10 16 0 8 8 kqueuepl 184 171 0 158 3 0 3 3 0 8 2 pipepl 304 138 0 110 3 0 3 3 0 8 0 fdescpl 448 701 0 671 4 0 4 4 0 8 0 filepl 120 3814 0 3589 12 0 12 12 0 8 3 lockfpl 104 130 0 128 1 0 1 1 0 8 0 lockfspl 48 57 0 55 1 0 1 1 0 8 0 sessionpl 144 22 0 14 1 0 1 1 0 8 0 pgrppl 48 31 0 15 1 0 1 1 0 8 0 ucredpl 104 440 0 427 1 0 1 1 0 8 0 zombiepl 144 673 0 671 1 0 1 1 0 8 0 processpl 1152 722 0 671 4 0 4 4 0 8 0 procpl 664 1182 0 1123 6 0 6 6 0 8 0 sosppl 168 3 0 3 1 0 1 1 0 8 1 sockpl 552 979 0 947 12 1 11 12 0 8 8 mcl64k 65536 117 0 117 1 0 1 1 0 8 1 mcl16k 16384 1 0 1 1 0 1 1 0 8 1 mcl8k 8192 5 0 5 1 0 1 1 0 8 1 mcl4k 4096 2827 0 2775 14 0 14 14 0 8 6 mcl2k 2048 832 0 831 2 0 2 2 0 8 1 mtagpl 96 7 0 5 1 0 1 1 0 8 0 mbufpl 256 10803 0 10665 20 1 19 20 0 8 7 bufpl 280 5716 0 118 400 0 400 400 0 8 0 anonpl 24 100330 0 97087 51 0 51 51 0 187 17 amapchunkpl 152 16197 0 15690 23 0 23 23 0 158 3 amappl16 200 1664 0 1635 25 10 15 18 0 8 9 amappl15 192 2 0 2 1 0 1 1 0 8 1 amappl14 184 104 0 94 1 0 1 1 0 8 0 amappl13 176 4 0 4 1 0 1 1 0 8 1 amappl12 168 1324 0 1294 2 0 2 2 0 8 0 amappl11 160 42 0 32 1 0 1 1 0 8 0 amappl10 152 1 0 1 1 0 1 1 0 8 1 amappl9 144 257 0 256 1 0 1 1 0 8 0 amappl8 136 16 0 15 1 0 1 1 0 8 0 amappl7 128 110 0 100 1 0 1 1 0 8 0 amappl6 120 175 0 172 1 0 1 1 0 8 0 amappl5 112 111 0 105 1 0 1 1 0 8 0 amappl4 104 264 0 247 1 0 1 1 0 8 0 amappl3 96 3159 0 3044 4 0 4 4 0 8 0 amappl2 88 620 0 565 2 0 2 2 0 8 0 amappl1 80 9045 0 8494 13 0 13 13 0 8 1 amappl 88 4802 0 4630 5 0 5 5 0 92 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 12 0 0 1 0 1 1 0 8 0 uaddrrnd 24 701 0 671 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 701 0 671 1 0 1 1 0 8 0 vmmpekpl 168 6924 0 6893 2 0 2 2 0 8 0 vmmpepl 168 48568 0 46663 96 0 96 96 0 357 8 vmsppl 368 700 0 671 4 0 4 4 0 8 1 rwobjpl 40 17119 0 13791 36 0 36 36 0 8 0 pdppl 4096 1409 0 1342 95 28 67 77 0 8 0 pvpl 32 298658 0 289732 122 0 122 122 0 265 19 pmappl 216 700 0 671 2 0 2 2 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 389 0 33 11 0 11 11 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace mtx_enter(18) at mtx_enter+0x6e sys/kern/kern_lock.c:335 clockintr_unbind(ffff8000015a0130,1) at clockintr_unbind+0x56 sys/kern/kern_clockintr.c:375 dt_ioctl_record_stop(ffff800000b5d300) at dt_ioctl_record_stop+0xbc sys/dev/dt/dt_dev.c:582 dtclose(11e5f,1,2000,ffff80002a7f5a10) at dtclose+0xd9 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(11e5f,1,2000,ffff80002a7f5a10) at dtclose+0xd9 sys/dev/dt/dt_dev.c:232 spec_close(ffff80003c9e13a0) at spec_close+0x466 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd80696588a0,1,fffffd8007bfb888,ffff80002a7f5a10) at VOP_CLOSE+0x129 sys/kern/vfs_vops.c:156 vn_closefile(fffffd806aefb878,ffff80002a7f5a10) at vn_closefile+0x11d vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd806aefb878,ffff80002a7f5a10) at vn_closefile+0x11d sys/kern/vfs_vnops.c:615 fdrop(fffffd806aefb878,ffff80002a7f5a10) at fdrop+0x121 sys/kern/kern_descrip.c:1280 closef(fffffd806aefb878,ffff80002a7f5a10) at closef+0x190 sys/kern/kern_descrip.c:1264 fdfree(ffff80002a7f5a10) at fdfree+0x115 sys/kern/kern_descrip.c:1195 exit1(ffff80002a7f5a10,0,0,1) at exit1+0x576 sys/kern/kern_exit.c:215 sys_exit(ffff80002a7f5a10,ffff80003c9e1700,ffff80003c9e1650) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80003c9e1700) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c9e1700) at syscall+0x962 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7836e8fde2e0, count: -14 ddb> machine ddbcpu 1 No such command ddb> trace mtx_enter(18) at mtx_enter+0x6e sys/kern/kern_lock.c:335 clockintr_unbind(ffff8000015a0130,1) at clockintr_unbind+0x56 sys/kern/kern_clockintr.c:375 dt_ioctl_record_stop(ffff800000b5d300) at dt_ioctl_record_stop+0xbc sys/dev/dt/dt_dev.c:582 dtclose(11e5f,1,2000,ffff80002a7f5a10) at dtclose+0xd9 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(11e5f,1,2000,ffff80002a7f5a10) at dtclose+0xd9 sys/dev/dt/dt_dev.c:232 spec_close(ffff80003c9e13a0) at spec_close+0x466 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd80696588a0,1,fffffd8007bfb888,ffff80002a7f5a10) at VOP_CLOSE+0x129 sys/kern/vfs_vops.c:156 vn_closefile(fffffd806aefb878,ffff80002a7f5a10) at vn_closefile+0x11d vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd806aefb878,ffff80002a7f5a10) at vn_closefile+0x11d sys/kern/vfs_vnops.c:615 fdrop(fffffd806aefb878,ffff80002a7f5a10) at fdrop+0x121 sys/kern/kern_descrip.c:1280 closef(fffffd806aefb878,ffff80002a7f5a10) at closef+0x190 sys/kern/kern_descrip.c:1264 fdfree(ffff80002a7f5a10) at fdfree+0x115 sys/kern/kern_descrip.c:1195 exit1(ffff80002a7f5a10,0,0,1) at exit1+0x576 sys/kern/kern_exit.c:215 sys_exit(ffff80002a7f5a10,ffff80003c9e1700,ffff80003c9e1650) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80003c9e1700) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c9e1700) at syscall+0x962 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7836e8fde2e0, count: -14