uvm_fault(0xfffffd807c4e7720, 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:303 clockintr_unbind(ffff80000157a130,1) at clockintr_unbind+0x56 sys/kern/kern_clockintr.c:375 dt_ioctl_record_stop(ffff80000148a180) at dt_ioctl_record_stop+0xbc sys/dev/dt/dt_dev.c:575 dtclose(11e5f,81,2000,ffff80003c977738) at dtclose+0xd5 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(11e5f,81,2000,ffff80003c977738) at dtclose+0xd5 sys/dev/dt/dt_dev.c:232 spec_close(ffff80003c95f560) at spec_close+0x45f sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd80689612e0,81,fffffd807f7d7958,ffff80003c977738) at VOP_CLOSE+0x12a sys/kern/vfs_vops.c:156 vn_closefile(fffffd806c7f8448,ffff80003c977738) at vn_closefile+0x11d vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd806c7f8448,ffff80003c977738) at vn_closefile+0x11d sys/kern/vfs_vnops.c:615 fdrop(fffffd806c7f8448,ffff80003c977738) at fdrop+0x126 sys/kern/kern_descrip.c:1267 closef(fffffd806c7f8448,ffff80003c977738) at closef+0x18d sys/kern/kern_descrip.c:1251 fdfree(ffff80003c977738) at fdfree+0x115 sys/kern/kern_descrip.c:1182 exit1(ffff80003c977738,0,0,1) at exit1+0x58f sys/kern/kern_exit.c:214 sys_exit(ffff80003c977738,ffff80003c95f8d0,ffff80003c95f820) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80003c95f8d0) at syscall+0x97e mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c95f8d0) at syscall+0x97e sys/arch/amd64/amd64/trap.c:579 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x73b64a84a130, 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(0xfffffd807c4e7720, 0x18, 0, 1) -> e ddb> trace mtx_enter(18) at mtx_enter+0x59 sys/kern/kern_lock.c:303 clockintr_unbind(ffff80000157a130,1) at clockintr_unbind+0x56 sys/kern/kern_clockintr.c:375 dt_ioctl_record_stop(ffff80000148a180) at dt_ioctl_record_stop+0xbc sys/dev/dt/dt_dev.c:575 dtclose(11e5f,81,2000,ffff80003c977738) at dtclose+0xd5 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(11e5f,81,2000,ffff80003c977738) at dtclose+0xd5 sys/dev/dt/dt_dev.c:232 spec_close(ffff80003c95f560) at spec_close+0x45f sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd80689612e0,81,fffffd807f7d7958,ffff80003c977738) at VOP_CLOSE+0x12a sys/kern/vfs_vops.c:156 vn_closefile(fffffd806c7f8448,ffff80003c977738) at vn_closefile+0x11d vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd806c7f8448,ffff80003c977738) at vn_closefile+0x11d sys/kern/vfs_vnops.c:615 fdrop(fffffd806c7f8448,ffff80003c977738) at fdrop+0x126 sys/kern/kern_descrip.c:1267 closef(fffffd806c7f8448,ffff80003c977738) at closef+0x18d sys/kern/kern_descrip.c:1251 fdfree(ffff80003c977738) at fdfree+0x115 sys/kern/kern_descrip.c:1182 exit1(ffff80003c977738,0,0,1) at exit1+0x58f sys/kern/kern_exit.c:214 sys_exit(ffff80003c977738,ffff80003c95f8d0,ffff80003c95f820) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80003c95f8d0) at syscall+0x97e mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c95f8d0) at syscall+0x97e sys/arch/amd64/amd64/trap.c:579 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x73b64a84a130, count: -14 ddb> show registers rdi 0 rsi 0 rbp 0xffff80003c95f410 rbx 0xffffffff829c1840 dtclose rdx 0 rcx 0xffff80003c977738 rax 0xffff80003c977738 r8 0 r9 0 r10 0x6fb4275b532156d0 r11 0x229168ea34c64bae r12 0 r13 0 r14 0x18 r15 0 rip 0xffffffff82e34d99 mtx_enter+0x59 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80003c95f3e0 ss 0x10 mtx_enter+0x59: movq 0(%r14),%rax ddb> show proc PROC (syz-executor) tid=455792 pid=33014 tcnt=0 stat=onproc flags process=1008 proc=2000 runpri=32, usrpri=82, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0xffff80003c977738 scnt=-1 ecnt=1 forw=0xffffffffffffffff, list=0xffff80003c9779c8,0xffff80002a7f0560 process=0xffff800035d15a88 user=0xffff80003c95a000, vmspace=0xfffffd807c4e7720 estcpu=32, cpticks=1, pctcpu=0.2, user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 48137 257259 53200 0 2 0 syz-executor 48137 168360 53200 0 3 0x4000080 fsleep syz-executor 8925 318999 9746 0 2 0 syz-executor 8925 388719 9746 0 3 0x4000080 fsleep syz-executor 97214 142224 43437 0 2 0 syz-executor 97214 521266 43437 0 3 0x4000080 fsleep syz-executor 51481 39984 86562 0 2 0 syz-executor 51481 466730 86562 0 2 0x4000000 syz-executor 51481 404426 86562 0 3 0x4000080 fsleep syz-executor 51481 288600 86562 0 2 0x4000000 syz-executor 2736 303394 32430 0 3 0 vmmaplk syz-executor 2736 488637 32430 0 2 0x4000000 syz-executor 45907 497405 16319 -1 2 0x10 syz-executor 45907 107322 16319 -1 3 0x4000090 fsleep syz-executor 45907 311651 16319 -1 3 0x4000090 fsleep syz-executor 16319 137041 70617 0 3 0x82 nanoslp syz-executor 86562 41679 70617 0 3 0x82 nanoslp syz-executor 39742 188384 0 0 3 0x14200 bored sosplice 53200 159329 70617 0 2 0xc82 syz-executor 22566 110132 70617 0 2 0x2 syz-executor 32430 203690 70617 0 3 0x82 nanoslp syz-executor 9746 411140 70617 0 3 0x82 nanoslp syz-executor 6815 468977 70617 0 3 0x82 nanoslp syz-executor 43437 408635 70617 0 3 0x82 nanoslp syz-executor 70617 169859 70380 0 3 0x82 kqread syz-executor 70380 180499 28869 0 3 0x10008a sigsusp ksh 28869 285542 66463 0 3 0x98 kqread sshd-session 66463 9270 66299 0 3 0x92 kqread sshd-session 29560 178973 1 0 3 0x100083 ttyopn getty 66299 493256 1 0 3 0x88 kqread sshd 75848 227689 32586 73 3 0x1100090 kqread syslogd 32586 489948 1 0 3 0x100082 sbwait syslogd 5449 72122 1 0 3 0x100080 kqread resolvd 30496 209161 59258 77 3 0x100092 kqread dhcpleased 98756 454868 59258 77 3 0x100092 kqread dhcpleased 59258 188677 1 0 3 0x80 kqread dhcpleased 79376 149178 0 0 3 0x14200 bored smr 55886 263954 0 0 2 0x14200 zerothread 94642 385237 0 0 3 0x14200 aiodoned aiodoned 7925 410884 0 0 3 0x14200 syncer update 56290 26435 0 0 3 0x14200 cleaner cleaner 41602 4594 0 0 2 0x14200 reaper 39916 222616 0 0 3 0x14200 pgdaemon pagedaemon 71408 193292 0 0 3 0x14200 bored viomb 88087 143887 0 0 3 0x40014200 acpi0 acpi0 44851 177947 0 0 3 0x14200 bored softnet3 78108 56028 0 0 3 0x14200 bored softnet2 54411 324847 0 0 3 0x14200 bored softnet1 96465 279607 0 0 3 0x14200 bored softnet0 75170 136356 0 0 3 0x14200 bored systqmp 84541 233163 0 0 3 0x14200 bored systq 71969 83259 0 0 2 0x40014200 softclock 17590 172503 0 0 3 0x40014200 idle0 1 222835 0 0 3 0x80082 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 10202 11055K 11557K 166960K 13731 0 pcb 18 16K 20K 166960K 428 0 rtable 163 9K 10K 166960K 596 0 pf 24 12K 21K 166960K 148 0 ifaddr 28 5K 7K 166960K 118 0 ifgroup 38 1K 2K 166960K 204 0 sysctl 3 1K 9K 166960K 10 0 counters 28 17K 18K 166960K 144 0 ioctlops 0 0K 4K 166960K 516 0 iov 0 0K 18K 166960K 411 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1395 88K 88K 166960K 2750 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 9K 166960K 38 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 48 0 dirhash 12 2K 2K 166960K 33 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 18 65K 93K 166960K 1526 0 sigio 1 0K 0K 166960K 130 0 proc 60 59K 100K 166960K 620 0 subproc 72 4K 4K 166960K 90 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 1 0K 0K 166960K 160 0 in_multi 61 4K 7K 166960K 183 0 ether_multi 1 0K 0K 166960K 6 0 mrt 1 0K 0K 166960K 4 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 223 996K 996K 166960K 223 0 exec 0 0K 1K 166960K 582 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 237 162K 177K 166960K 15787 0 UVM aobj 118 4K 4K 166960K 121 0 pinsyscall 39 78K 93K 166960K 2615 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 62 0 NDP 8 0K 2K 166960K 82 0 temp 73 8663K 8730K 166960K 65106 0 kqueue 14 22K 32K 166960K 292 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 120 274 0 271 3 1 2 2 0 8 1 rtentry 136 183 0 119 4 0 4 4 0 8 0 unpcb 144 1463 0 1444 10 4 6 6 0 8 5 syncache 336 4 0 4 2 1 1 1 0 8 1 tcpqe 32 9 0 9 1 1 0 1 0 8 0 tcpcb 808 528 0 524 21 13 8 14 0 8 7 arp 88 25 0 15 1 0 1 1 0 8 0 ipq 40 2 0 2 1 0 1 1 0 8 1 ipqe 40 2 0 2 1 0 1 1 0 8 1 inpcb 344 1995 0 1986 23 15 8 13 0 8 7 nd6 104 42 0 28 1 0 1 1 0 8 0 pkpcb 40 11 0 11 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 0 1 1 0 8 1 ppxss 1072 91 0 91 2 1 1 1 0 8 1 pppxif 1384 46 0 46 1 0 1 1 0 8 1 pfrktable 1344 2 0 2 1 0 1 1 0 8 1 art_heap8 4096 4 0 0 4 0 4 4 0 8 0 art_heap4 256 784 0 489 31 2 29 29 0 8 7 art_table 32 788 0 489 4 0 4 4 0 8 0 art_node 16 175 0 117 1 0 1 1 0 8 0 sysvmsgpl 40 13 0 7 2 1 1 1 0 8 0 semupl 112 1 0 1 1 1 0 1 0 8 0 semapl 112 46 0 36 1 0 1 1 0 8 0 shmpl 112 119 0 3 4 0 4 4 0 8 0 dirhash 1024 31 0 14 3 0 3 3 0 8 0 dino2pl 256 4232 0 2741 95 0 95 95 0 8 0 ffsino 248 4232 0 2741 95 0 95 95 0 8 0 nchpl 144 6404 0 4719 63 0 63 63 0 8 0 rtmask 32 10 0 10 2 1 1 1 0 8 1 uvmvnodes 80 5137 0 0 105 0 105 105 0 8 0 vnodes 216 5137 0 0 286 0 286 286 0 8 0 namei 1024 22583 0 22583 2 1 1 1 0 8 1 kstatmem 264 116 0 100 2 0 2 2 0 8 0 acpiwqpl 32 67 0 67 1 0 1 1 1 8 1 scsiplug 72 5 0 5 1 0 1 1 0 8 1 scxspl 216 19006 0 19006 12 9 3 8 1 8 3 plimitpl 152 294 0 278 1 0 1 1 0 8 0 sigapl 424 1828 0 1781 8 0 8 8 0 8 1 knotepl 120 300495 0 300199 38 28 10 22 0 8 1 kqueuepl 184 648 0 637 4 0 4 4 0 8 3 pipepl 296 313 0 284 5 0 5 5 0 8 2 fdescpl 440 1787 0 1757 5 1 4 5 0 8 0 filepl 120 13182 0 12959 16 4 12 13 0 8 2 lockfpl 104 524 0 522 1 0 1 1 0 8 0 lockfspl 48 175 0 173 1 0 1 1 0 8 0 sessionpl 144 24 0 16 1 0 1 1 0 8 0 pgrppl 48 50 0 34 1 0 1 1 0 8 0 ucredpl 104 1833 0 1821 1 0 1 1 0 8 0 zombiepl 144 2439 0 2438 2 1 1 1 0 8 0 processpl 1128 1828 0 1781 5 0 5 5 0 8 1 procpl 656 4185 0 4128 9 1 8 8 0 8 2 sosppl 168 13 0 13 3 2 1 1 0 8 1 sockpl 528 3907 0 3876 28 18 10 16 0 8 7 mcl64k 65536 144 0 144 2 1 1 1 0 8 1 mcl16k 16384 8 0 8 1 0 1 1 0 8 1 mcl12k 12288 6 0 6 1 0 1 1 0 8 1 mcl9k 9216 2 0 2 1 1 0 1 0 8 0 mcl8k 8192 30 0 30 3 2 1 1 0 8 1 mcl4k 4096 4421 0 4363 17 8 9 14 0 8 1 mcl2k 2048 1762 0 1757 3 0 3 3 0 8 2 mtagpl 96 71 0 31 2 0 2 2 0 8 0 mbufpl 256 20209 0 20018 31 9 22 22 0 8 4 bufpl 280 5128 0 128 358 0 358 358 0 8 0 anonpl 24 248829 0 241363 83 0 83 83 0 187 18 amapchunkpl 152 53387 0 52814 45 8 37 37 0 158 14 amappl16 200 4404 0 4181 28 3 25 25 0 8 2 amappl15 192 7 0 7 1 1 0 1 0 8 0 amappl14 184 114 0 103 1 0 1 1 0 8 0 amappl13 176 7 0 6 1 0 1 1 0 8 0 amappl12 168 2430 0 2400 2 0 2 2 0 8 0 amappl11 160 44 0 33 1 0 1 1 0 8 0 amappl10 152 7 0 7 3 2 1 1 0 8 1 amappl9 144 254 0 254 1 1 0 1 0 8 0 amappl8 136 22 0 20 1 0 1 1 0 8 0 amappl7 128 97 0 87 1 0 1 1 0 8 0 amappl6 120 192 0 188 1 0 1 1 0 8 0 amappl5 112 119 0 113 1 0 1 1 0 8 0 amappl4 104 339 0 324 1 0 1 1 0 8 0 amappl3 96 10630 0 10521 4 0 4 4 0 8 0 amappl2 88 654 0 598 2 0 2 2 0 8 0 amappl1 80 13885 0 13345 14 1 13 13 0 8 1 amappl 88 14780 0 14607 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 128 255 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 18 0 17 1 0 1 1 0 8 0 aobjpl 72 121 0 3 3 0 3 3 0 8 0 uaddrrnd 24 1787 0 1757 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1787 0 1757 1 0 1 1 0 8 0 vmmpekpl 168 15053 0 15012 3 0 3 3 0 8 0 vmmpepl 168 114992 0 112911 103 0 103 103 0 357 4 vmsppl 360 1786 0 1757 4 1 3 4 0 8 0 rwobjpl 32 34725 0 28422 51 0 51 51 0 8 0 pdppl 4096 3581 0 3514 115 48 67 81 0 8 0 pvpl 32 748331 0 735090 176 1 175 175 0 265 42 pmappl 216 1786 0 1757 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 334 0 87 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:303 clockintr_unbind(ffff80000157a130,1) at clockintr_unbind+0x56 sys/kern/kern_clockintr.c:375 dt_ioctl_record_stop(ffff80000148a180) at dt_ioctl_record_stop+0xbc sys/dev/dt/dt_dev.c:575 dtclose(11e5f,81,2000,ffff80003c977738) at dtclose+0xd5 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(11e5f,81,2000,ffff80003c977738) at dtclose+0xd5 sys/dev/dt/dt_dev.c:232 spec_close(ffff80003c95f560) at spec_close+0x45f sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd80689612e0,81,fffffd807f7d7958,ffff80003c977738) at VOP_CLOSE+0x12a sys/kern/vfs_vops.c:156 vn_closefile(fffffd806c7f8448,ffff80003c977738) at vn_closefile+0x11d vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd806c7f8448,ffff80003c977738) at vn_closefile+0x11d sys/kern/vfs_vnops.c:615 fdrop(fffffd806c7f8448,ffff80003c977738) at fdrop+0x126 sys/kern/kern_descrip.c:1267 closef(fffffd806c7f8448,ffff80003c977738) at closef+0x18d sys/kern/kern_descrip.c:1251 fdfree(ffff80003c977738) at fdfree+0x115 sys/kern/kern_descrip.c:1182 exit1(ffff80003c977738,0,0,1) at exit1+0x58f sys/kern/kern_exit.c:214 sys_exit(ffff80003c977738,ffff80003c95f8d0,ffff80003c95f820) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80003c95f8d0) at syscall+0x97e mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c95f8d0) at syscall+0x97e sys/arch/amd64/amd64/trap.c:579 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x73b64a84a130, count: -14 ddb> machine ddbcpu 1 No such command ddb> trace mtx_enter(18) at mtx_enter+0x59 sys/kern/kern_lock.c:303 clockintr_unbind(ffff80000157a130,1) at clockintr_unbind+0x56 sys/kern/kern_clockintr.c:375 dt_ioctl_record_stop(ffff80000148a180) at dt_ioctl_record_stop+0xbc sys/dev/dt/dt_dev.c:575 dtclose(11e5f,81,2000,ffff80003c977738) at dtclose+0xd5 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(11e5f,81,2000,ffff80003c977738) at dtclose+0xd5 sys/dev/dt/dt_dev.c:232 spec_close(ffff80003c95f560) at spec_close+0x45f sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd80689612e0,81,fffffd807f7d7958,ffff80003c977738) at VOP_CLOSE+0x12a sys/kern/vfs_vops.c:156 vn_closefile(fffffd806c7f8448,ffff80003c977738) at vn_closefile+0x11d vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd806c7f8448,ffff80003c977738) at vn_closefile+0x11d sys/kern/vfs_vnops.c:615 fdrop(fffffd806c7f8448,ffff80003c977738) at fdrop+0x126 sys/kern/kern_descrip.c:1267 closef(fffffd806c7f8448,ffff80003c977738) at closef+0x18d sys/kern/kern_descrip.c:1251 fdfree(ffff80003c977738) at fdfree+0x115 sys/kern/kern_descrip.c:1182 exit1(ffff80003c977738,0,0,1) at exit1+0x58f sys/kern/kern_exit.c:214 sys_exit(ffff80003c977738,ffff80003c95f8d0,ffff80003c95f820) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80003c95f8d0) at syscall+0x97e mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c95f8d0) at syscall+0x97e sys/arch/amd64/amd64/trap.c:579 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x73b64a84a130, count: -14