uvm_fault(0xfffffd8069bd12e8, 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 mtx_enter(18) at mtx_enter+0x59 sys/kern/kern_lock.c:320 clockintr_unbind(ffff8000014cb530,1) at clockintr_unbind+0x56 sys/kern/kern_clockintr.c:375 dt_ioctl_record_stop(ffff800001498a80) at dt_ioctl_record_stop+0xbc sys/dev/dt/dt_dev.c:576 dtclose(11e5f,81,2000,ffff80002a7f14a0) at dtclose+0xd5 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(11e5f,81,2000,ffff80002a7f14a0) at dtclose+0xd5 sys/dev/dt/dt_dev.c:232 spec_close(ffff800035d13650) at spec_close+0x45f sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd8067c7b2e8,81,fffffd8007bfb6e8,ffff80002a7f14a0) at VOP_CLOSE+0x12a sys/kern/vfs_vops.c:156 vn_closefile(fffffd8069bea178,ffff80002a7f14a0) at vn_closefile+0x11d vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd8069bea178,ffff80002a7f14a0) at vn_closefile+0x11d sys/kern/vfs_vnops.c:615 fdrop(fffffd8069bea178,ffff80002a7f14a0) at fdrop+0x126 sys/kern/kern_descrip.c:1267 closef(fffffd8069bea178,ffff80002a7f14a0) at closef+0x18d sys/kern/kern_descrip.c:1251 fdfree(ffff80002a7f14a0) at fdfree+0x115 sys/kern/kern_descrip.c:1182 exit1(ffff80002a7f14a0,0,0,1) at exit1+0x59c sys/kern/kern_exit.c:215 sys_exit(ffff80002a7f14a0,ffff800035d139c0,ffff800035d13910) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff800035d139c0) at syscall+0x97e mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff800035d139c0) at syscall+0x97e sys/arch/amd64/amd64/trap.c:579 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x738ede4441d0, 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(0xfffffd8069bd12e8, 0x18, 0, 1) -> e ddb> trace mtx_enter(18) at mtx_enter+0x59 sys/kern/kern_lock.c:320 clockintr_unbind(ffff8000014cb530,1) at clockintr_unbind+0x56 sys/kern/kern_clockintr.c:375 dt_ioctl_record_stop(ffff800001498a80) at dt_ioctl_record_stop+0xbc sys/dev/dt/dt_dev.c:576 dtclose(11e5f,81,2000,ffff80002a7f14a0) at dtclose+0xd5 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(11e5f,81,2000,ffff80002a7f14a0) at dtclose+0xd5 sys/dev/dt/dt_dev.c:232 spec_close(ffff800035d13650) at spec_close+0x45f sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd8067c7b2e8,81,fffffd8007bfb6e8,ffff80002a7f14a0) at VOP_CLOSE+0x12a sys/kern/vfs_vops.c:156 vn_closefile(fffffd8069bea178,ffff80002a7f14a0) at vn_closefile+0x11d vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd8069bea178,ffff80002a7f14a0) at vn_closefile+0x11d sys/kern/vfs_vnops.c:615 fdrop(fffffd8069bea178,ffff80002a7f14a0) at fdrop+0x126 sys/kern/kern_descrip.c:1267 closef(fffffd8069bea178,ffff80002a7f14a0) at closef+0x18d sys/kern/kern_descrip.c:1251 fdfree(ffff80002a7f14a0) at fdfree+0x115 sys/kern/kern_descrip.c:1182 exit1(ffff80002a7f14a0,0,0,1) at exit1+0x59c sys/kern/kern_exit.c:215 sys_exit(ffff80002a7f14a0,ffff800035d139c0,ffff800035d13910) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff800035d139c0) at syscall+0x97e mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff800035d139c0) at syscall+0x97e sys/arch/amd64/amd64/trap.c:579 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x738ede4441d0, count: -14 ddb> show registers rdi 0 rsi 0 rbp 0xffff800035d13500 rbx 0xffffffff82d80200 dtclose rdx 0 rcx 0xffff80002a7f14a0 rax 0xffff80002a7f14a0 r8 0xffffffffffffffff r9 0 r10 0x8922a9f33f1dd402 r11 0x8e32add1f7e2492b r12 0 r13 0 r14 0x18 r15 0 rip 0xffffffff82e3e1b9 mtx_enter+0x59 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff800035d134d0 ss 0x10 mtx_enter+0x59: movq 0(%r14),%rax ddb> show proc PROC (syz-executor) tid=123349 pid=61340 tcnt=0 stat=onproc flags process=1008 proc=2000 runpri=32, usrpri=84, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0xffff80002a7f14a0 scnt=-1 ecnt=1 forw=0xffffffffffffffff, list=0xffff80002a7f1730,0xffff80002a7f1220 process=0xffff800035d14018 user=0xffff800035d0e000, vmspace=0xfffffd8069bd12e8 estcpu=34, cpticks=1, pctcpu=0.1, user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 96172 308188 79301 0 2 0 syz-executor 98336 409159 97973 0 2 0 syz-executor 98336 85084 97973 0 3 0x4000080 fsleep syz-executor 46282 311698 35307 -1 2 0x10 syz-executor 46282 511511 35307 -1 3 0x4000090 fsleep syz-executor 5975 448925 96738 0 2 0 syz-executor 5975 226587 96738 0 3 0x4000080 fsleep syz-executor 71337 512704 45163 0 2 0 syz-executor 71337 441339 45163 0 3 0x4000080 fsleep syz-executor 86119 293133 74647 0 2 0 syz-executor 86119 426818 74647 0 3 0x4000080 fsleep syz-executor 86119 279002 74647 0 3 0x4000080 fsleep syz-executor 86119 442395 74647 0 3 0x4000080 fsleep syz-executor 94179 439423 1 0 3 0x100083 ttyin getty 43278 506859 0 0 3 0x14200 bored sosplice 35307 71229 63014 0 3 0x82 nanoslp syz-executor 79301 390894 63014 0 3 0x82 nanoslp syz-executor 96738 341299 63014 0 3 0x82 nanoslp syz-executor 97973 495689 63014 0 3 0x82 nanoslp syz-executor 45163 150233 63014 0 3 0x82 nanoslp syz-executor 34446 209434 63014 0 3 0x82 wait syz-executor 74647 141328 63014 0 3 0x82 nanoslp syz-executor 31227 490448 63014 0 3 0x82 nanoslp syz-executor 63014 35782 18149 0 3 0x82 kqread syz-executor 18149 357101 412 0 3 0x10008a sigsusp ksh 412 298999 14918 0 3 0x98 kqread sshd-session 14918 255997 81435 0 3 0x92 kqread sshd-session 81435 487074 1 0 3 0x88 kqread sshd 83972 303592 87628 73 3 0x1100090 kqread syslogd 87628 251386 1 0 3 0x100082 sbwait syslogd 47688 293389 1 0 3 0x100080 kqread resolvd 56710 90905 97254 77 3 0x100092 kqread dhcpleased 50698 209711 97254 77 3 0x100092 kqread dhcpleased 97254 7045 1 0 3 0x80 kqread dhcpleased 88947 168007 0 0 3 0x14200 bored smr 90679 131994 0 0 2 0x14200 zerothread 21464 155260 0 0 3 0x14200 aiodoned aiodoned 73485 131190 0 0 2 0x14e00 update 75419 224355 0 0 3 0x14200 cleaner cleaner 28101 322285 0 0 3 0x14200 reaper reaper 59117 327581 0 0 3 0x14200 pgdaemon pagedaemon 40384 450027 0 0 3 0x14200 bored viomb 99162 157420 0 0 3 0x40014200 acpi0 acpi0 53780 459091 0 0 3 0x14200 bored softnet3 30143 47874 0 0 3 0x14200 bored softnet2 45254 149662 0 0 3 0x14200 bored softnet1 11807 452511 0 0 3 0x14200 bored softnet0 70842 182368 0 0 3 0x14200 bored systqmp 78695 316083 0 0 3 0x14200 bored systq 76189 199560 0 0 3 0x40014200 tmoslp softclock 9077 385303 0 0 3 0x40014200 idle0 1 379693 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 10196 11144K 11844K 166960K 15654 0 pcb 18 15K 17K 166960K 216 0 rtable 147 6K 8K 166960K 653 0 pf 29 12K 15K 166960K 164 0 ifaddr 30 5K 8K 166960K 116 0 ifgroup 46 2K 2K 166960K 215 0 sysctl 4 1K 9K 166960K 12 0 counters 31 17K 18K 166960K 99 0 ioctlops 0 0K 4K 166960K 206 0 iov 0 0K 18K 166960K 204 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1497 94K 94K 166960K 3618 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 2K 9K 166960K 19 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 46 0 dirhash 12 2K 2K 166960K 33 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 18 65K 232K 166960K 1835 0 sigio 0 0K 0K 166960K 25 0 proc 60 59K 116K 166960K 619 0 subproc 72 4K 4K 166960K 83 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 282 0 in_multi 58 4K 7K 166960K 184 0 ether_multi 1 0K 0K 166960K 8 0 mrt 0 0K 0K 166960K 6 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 91 413K 413K 166960K 91 0 exec 0 0K 1K 166960K 472 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 227 151K 174K 166960K 17025 0 UVM aobj 20 4K 6K 166960K 26 0 pinsyscall 39 78K 94K 166960K 2989 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 49 0 NDP 10 0K 2K 166960K 71 0 temp 75 8688K 8758K 166960K 60659 0 kqueue 14 22K 30K 166960K 236 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 120 367 0 362 3 0 3 3 0 8 2 rtentry 136 163 0 103 4 0 4 4 0 8 0 unpcb 144 690 0 675 4 0 4 4 0 8 3 syncache 336 24 0 24 2 1 1 1 0 8 1 tcpqe 32 5 0 5 1 0 1 1 0 8 1 tcpcb 736 643 0 632 14 4 10 13 0 8 8 arp 88 26 0 15 1 0 1 1 0 8 0 ipq 40 3 0 2 1 0 1 1 0 8 0 ipqe 40 7 0 4 1 0 1 1 0 8 0 inpcb 328 1542 0 1526 14 4 10 13 0 8 8 ip6q 72 3 0 1 1 0 1 1 0 8 0 ip6af 40 4 0 2 1 0 1 1 0 8 0 nd6 104 32 0 17 1 0 1 1 0 8 0 pkpcb 40 5 0 5 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 37 0 37 2 1 1 1 0 8 1 pppxif 1384 20 0 20 2 1 1 1 0 8 1 pfrule 1344 18 0 17 1 0 1 1 0 8 0 rttmr 136 1 0 1 1 0 1 1 0 8 1 art_heap8 4096 3 0 0 3 0 3 3 0 8 0 art_heap4 256 676 0 397 29 0 29 29 0 8 7 art_table 32 679 0 397 4 0 4 4 0 8 0 art_node 16 153 0 102 1 0 1 1 0 8 0 sysvmsgpl 40 15 0 11 1 0 1 1 0 8 0 semapl 112 44 0 34 1 0 1 1 0 8 0 shmpl 112 23 0 6 1 0 1 1 0 8 0 dirhash 1024 31 0 14 3 0 3 3 0 8 0 dino2pl 256 4465 0 2969 95 0 95 95 0 8 0 ffsino 248 4465 0 2969 95 0 95 95 0 8 0 nchpl 144 6810 0 5131 63 0 63 63 0 8 0 rtmask 32 3 0 3 1 0 1 1 0 8 1 uvmvnodes 80 5926 0 0 121 0 121 121 0 8 0 vnodes 216 5926 0 0 330 0 330 330 0 8 0 namei 1024 21858 0 21858 2 1 1 2 0 8 1 kstatmem 264 106 0 86 3 0 3 3 0 8 1 scsiplug 72 2 0 2 1 0 1 1 0 8 1 scxspl 216 20529 0 20529 10 2 8 8 1 8 8 plimitpl 152 209 0 193 1 0 1 1 0 8 0 sigapl 424 2144 0 2097 8 0 8 8 0 8 1 knotepl 120 353680 0 353632 25 15 10 16 0 8 6 kqueuepl 184 455 0 445 4 0 4 4 0 8 3 pipepl 296 259 0 232 3 0 3 3 0 8 0 fdescpl 440 2106 0 2076 5 1 4 5 0 8 0 filepl 120 11396 0 11179 12 0 12 12 0 8 3 lockfpl 104 419 0 417 1 0 1 1 0 8 0 lockfspl 48 180 0 178 1 0 1 1 0 8 0 sessionpl 144 44 0 36 1 0 1 1 0 8 0 pgrppl 48 87 0 71 1 0 1 1 0 8 0 ucredpl 104 1299 0 1286 1 0 1 1 0 8 0 zombiepl 144 2099 0 2097 2 1 1 1 0 8 0 processpl 1160 2144 0 2097 5 0 5 5 0 8 1 procpl 656 4249 0 4195 8 0 8 8 0 8 2 sosppl 168 5 0 5 1 0 1 1 0 8 1 sockpl 528 2639 0 2582 14 1 13 13 0 8 7 mcl64k 65536 158 0 158 2 1 1 1 0 8 1 mcl16k 16384 45 0 45 2 1 1 1 0 8 1 mcl12k 12288 12 0 12 2 1 1 1 0 8 1 mcl9k 9216 13 0 13 2 1 1 1 0 8 1 mcl8k 8192 75 0 66 3 1 2 2 0 8 0 mcl4k 4096 5203 0 5147 18 7 11 15 0 8 3 mcl2k2 2112 33 0 33 2 1 1 1 0 8 1 mcl2k 2048 1740 0 1725 6 2 4 4 0 8 1 mtagpl 96 213 0 137 4 0 4 4 0 8 0 mbufpl 256 22918 0 22687 29 2 27 29 0 8 3 bufpl 280 4997 0 124 349 0 349 349 0 8 0 anonpl 24 298982 0 290650 111 9 102 102 0 187 25 amapchunkpl 152 57595 0 57047 36 4 32 32 0 158 7 amappl16 200 5427 0 5162 43 5 38 40 0 8 8 amappl15 192 13 0 13 1 1 0 1 0 8 0 amappl14 184 164 0 154 1 0 1 1 0 8 0 amappl13 176 5 0 5 1 1 0 1 0 8 0 amappl12 168 2754 0 2725 2 0 2 2 0 8 0 amappl11 160 46 0 36 1 0 1 1 0 8 0 amappl10 152 12 0 12 1 1 0 1 0 8 0 amappl9 144 253 0 252 2 1 1 1 0 8 0 amappl8 136 28 0 26 1 0 1 1 0 8 0 amappl7 128 187 0 177 1 0 1 1 0 8 0 amappl6 120 200 0 195 1 0 1 1 0 8 0 amappl5 112 115 0 108 1 0 1 1 0 8 0 amappl4 104 372 0 355 1 0 1 1 0 8 0 amappl3 96 12032 0 11930 4 0 4 4 0 8 0 amappl2 88 793 0 736 2 0 2 2 0 8 0 amappl1 80 20279 0 19727 15 1 14 14 0 8 0 amappl 88 16024 0 15860 5 0 5 5 0 92 0 dma65536 65536 2 0 2 1 0 1 1 0 8 1 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 8 0 8 2 1 1 1 0 8 1 dma128 128 255 0 255 2 1 1 1 0 8 1 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 19 0 18 1 0 1 1 0 8 0 aobjpl 72 25 0 6 1 0 1 1 0 8 0 uaddrrnd 24 2106 0 2076 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 2106 0 2076 1 0 1 1 0 8 0 vmmpekpl 168 17200 0 17156 3 0 3 3 0 8 0 vmmpepl 168 138950 0 136813 126 6 120 120 0 357 17 vmsppl 360 2105 0 2076 4 1 3 4 0 8 0 rwobjpl 32 41664 0 34640 57 0 57 57 0 8 0 pdppl 4096 4219 0 4152 129 62 67 81 0 8 0 pvpl 32 935600 0 921450 228 14 214 214 0 265 52 pmappl 216 2105 0 2076 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 343 0 84 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(ffff8000014cb530,1) at clockintr_unbind+0x56 sys/kern/kern_clockintr.c:375 dt_ioctl_record_stop(ffff800001498a80) at dt_ioctl_record_stop+0xbc sys/dev/dt/dt_dev.c:576 dtclose(11e5f,81,2000,ffff80002a7f14a0) at dtclose+0xd5 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(11e5f,81,2000,ffff80002a7f14a0) at dtclose+0xd5 sys/dev/dt/dt_dev.c:232 spec_close(ffff800035d13650) at spec_close+0x45f sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd8067c7b2e8,81,fffffd8007bfb6e8,ffff80002a7f14a0) at VOP_CLOSE+0x12a sys/kern/vfs_vops.c:156 vn_closefile(fffffd8069bea178,ffff80002a7f14a0) at vn_closefile+0x11d vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd8069bea178,ffff80002a7f14a0) at vn_closefile+0x11d sys/kern/vfs_vnops.c:615 fdrop(fffffd8069bea178,ffff80002a7f14a0) at fdrop+0x126 sys/kern/kern_descrip.c:1267 closef(fffffd8069bea178,ffff80002a7f14a0) at closef+0x18d sys/kern/kern_descrip.c:1251 fdfree(ffff80002a7f14a0) at fdfree+0x115 sys/kern/kern_descrip.c:1182 exit1(ffff80002a7f14a0,0,0,1) at exit1+0x59c sys/kern/kern_exit.c:215 sys_exit(ffff80002a7f14a0,ffff800035d139c0,ffff800035d13910) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff800035d139c0) at syscall+0x97e mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff800035d139c0) at syscall+0x97e sys/arch/amd64/amd64/trap.c:579 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x738ede4441d0, count: -14 ddb> machine ddbcpu 1 No such command ddb> trace mtx_enter(18) at mtx_enter+0x59 sys/kern/kern_lock.c:320 clockintr_unbind(ffff8000014cb530,1) at clockintr_unbind+0x56 sys/kern/kern_clockintr.c:375 dt_ioctl_record_stop(ffff800001498a80) at dt_ioctl_record_stop+0xbc sys/dev/dt/dt_dev.c:576 dtclose(11e5f,81,2000,ffff80002a7f14a0) at dtclose+0xd5 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(11e5f,81,2000,ffff80002a7f14a0) at dtclose+0xd5 sys/dev/dt/dt_dev.c:232 spec_close(ffff800035d13650) at spec_close+0x45f sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd8067c7b2e8,81,fffffd8007bfb6e8,ffff80002a7f14a0) at VOP_CLOSE+0x12a sys/kern/vfs_vops.c:156 vn_closefile(fffffd8069bea178,ffff80002a7f14a0) at vn_closefile+0x11d vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd8069bea178,ffff80002a7f14a0) at vn_closefile+0x11d sys/kern/vfs_vnops.c:615 fdrop(fffffd8069bea178,ffff80002a7f14a0) at fdrop+0x126 sys/kern/kern_descrip.c:1267 closef(fffffd8069bea178,ffff80002a7f14a0) at closef+0x18d sys/kern/kern_descrip.c:1251 fdfree(ffff80002a7f14a0) at fdfree+0x115 sys/kern/kern_descrip.c:1182 exit1(ffff80002a7f14a0,0,0,1) at exit1+0x59c sys/kern/kern_exit.c:215 sys_exit(ffff80002a7f14a0,ffff800035d139c0,ffff800035d13910) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff800035d139c0) at syscall+0x97e mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff800035d139c0) at syscall+0x97e sys/arch/amd64/amd64/trap.c:579 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x738ede4441d0, count: -14