login: uvm_fault(0xfffffd806bebe5b8, 0x20, 0, 1) -> e kernel: page fault trap, code=0 Stopped at mtx_enter_try+0x65: movl 0x8(%r14),%r15d TID PID UID PRFLAGS PFLAGS CPU COMMAND 365700 72478 0 0x14000 0x200 1 reaper mtx_enter_try(18) at mtx_enter_try+0x65 sys/kern/kern_lock.c:265 mtx_enter(18) at mtx_enter+0x60 sys/kern/kern_lock.c:239 clockintr_unbind(ffff800001422530,1) at clockintr_unbind+0x56 sys/kern/kern_clockintr.c:375 dt_ioctl_record_stop(ffff800001489000) at dt_ioctl_record_stop+0xbc sys/dev/dt/dt_dev.c:575 dtclose(11e5f,81,2000,ffff80002a296a60) at dtclose+0x105 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(11e5f,81,2000,ffff80002a296a60) at dtclose+0x105 sys/dev/dt/dt_dev.c:232 spec_close(ffff80003b02b5d0) at spec_close+0x45f sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd80697a0488,81,fffffd807f7d32d8,ffff80002a296a60) at VOP_CLOSE+0x133 sys/kern/vfs_vops.c:156 vn_closefile(fffffd806aca0920,ffff80002a296a60) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd806aca0920,ffff80002a296a60) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd806aca0920,ffff80002a296a60) at fdrop+0x126 sys/kern/kern_descrip.c:1267 closef(fffffd806aca0920,ffff80002a296a60) at closef+0x192 sys/kern/kern_descrip.c:1251 fdfree(ffff80002a296a60) at fdfree+0x116 sys/kern/kern_descrip.c:1182 exit1(ffff80002a296a60,0,0,1) at exit1+0x58f sys/kern/kern_exit.c:214 sys_exit(ffff80002a296a60,ffff80003b02b940,ffff80003b02b890) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80003b02b940) at syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003b02b940) at syscall+0xb08 sys/arch/amd64/amd64/trap.c:579 end trace frame: 0xffff80003b02b9c0, count: 0 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{0}> ddb{0}> set $lines = 0 ddb{0}> set $maxwidth = 0 ddb{0}> show panic *cpu0: uvm_fault(0xfffffd806bebe5b8, 0x20, 0, 1) -> e ddb{0}> trace mtx_enter_try(18) at mtx_enter_try+0x65 sys/kern/kern_lock.c:265 mtx_enter(18) at mtx_enter+0x60 sys/kern/kern_lock.c:239 clockintr_unbind(ffff800001422530,1) at clockintr_unbind+0x56 sys/kern/kern_clockintr.c:375 dt_ioctl_record_stop(ffff800001489000) at dt_ioctl_record_stop+0xbc sys/dev/dt/dt_dev.c:575 dtclose(11e5f,81,2000,ffff80002a296a60) at dtclose+0x105 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(11e5f,81,2000,ffff80002a296a60) at dtclose+0x105 sys/dev/dt/dt_dev.c:232 spec_close(ffff80003b02b5d0) at spec_close+0x45f sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd80697a0488,81,fffffd807f7d32d8,ffff80002a296a60) at VOP_CLOSE+0x133 sys/kern/vfs_vops.c:156 vn_closefile(fffffd806aca0920,ffff80002a296a60) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd806aca0920,ffff80002a296a60) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd806aca0920,ffff80002a296a60) at fdrop+0x126 sys/kern/kern_descrip.c:1267 closef(fffffd806aca0920,ffff80002a296a60) at closef+0x192 sys/kern/kern_descrip.c:1251 fdfree(ffff80002a296a60) at fdfree+0x116 sys/kern/kern_descrip.c:1182 exit1(ffff80002a296a60,0,0,1) at exit1+0x58f sys/kern/kern_exit.c:214 sys_exit(ffff80002a296a60,ffff80003b02b940,ffff80003b02b890) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80003b02b940) at syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003b02b940) at syscall+0xb08 sys/arch/amd64/amd64/trap.c:579 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7ce075906180, count: -15 ddb{0}> show registers rdi 0 rsi 0 rbp 0xffff80003b02b440 rbx 0xffffffff8316be70 dtclose rdx 0 rcx 0xffff80002a296a60 rax 0xffffffff83851ff0 cpu_info_full_primary+0x1ff0 r8 0x8 r9 0x14 r10 0x3c037098db9609f2 r11 0x80022794a7b791ff r12 0 r13 0xffffffff83851ff0 cpu_info_full_primary+0x1ff0 r14 0x18 r15 0 rip 0xffffffff819c4cb5 mtx_enter_try+0x65 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80003b02b400 ss 0x10 mtx_enter_try+0x65: movl 0x8(%r14),%r15d ddb{0}> show proc PROC (syz-executor) tid=381381 pid=85952 tcnt=0 stat=onproc flags process=1008 proc=2000 runpri=32, usrpri=50, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0xffff80002a296a60 scnt=-1 ecnt=1 forw=0xffffffffffffffff, list=0xffff80002a2979c0,0xffff80002a296f90 process=0xffff80003ac1d7b8 user=0xffff80003b026000, vmspace=0xfffffd806bebe5b8 estcpu=36, cpticks=3, pctcpu=0.0, user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 98833 433503 28404 0 2 0 syz-executor 98833 351302 28404 0 3 0x4000080 fsleep syz-executor 77995 512460 56881 0 2 0 syz-executor 77995 319892 56881 0 2 0x4000000 syz-executor 77995 157388 56881 0 2 0x4000000 syz-executor 43926 89349 59012 -1 2 0x10 syz-executor 43926 10873 59012 -1 3 0x4000090 fsleep syz-executor 60765 465736 53395 0 3 0x80 nanoslp syz-executor 60765 500548 53395 0 3 0x4000080 sbwait syz-executor 8307 444303 1 0 3 0x100083 ttyin getty 45969 110386 0 0 3 0x14200 acct acct 40908 498941 0 0 3 0x14200 bored sosplice 28404 210764 99340 0 3 0x82 nanoslp syz-executor 94598 400512 99340 0 3 0x82 nanoslp syz-executor 59012 269782 99340 0 3 0x82 nanoslp syz-executor 53395 131145 99340 0 3 0x82 nanoslp syz-executor 56881 122303 99340 0 2 0x2 syz-executor 7866 385318 99340 0 3 0x82 nanoslp syz-executor 87733 92596 99340 0 2 0x2 syz-executor 73051 270642 99340 0 3 0x82 nanoslp syz-executor 99340 484355 36748 0 2 0x2 syz-executor 36748 172249 44862 0 3 0x10008a sigsusp ksh 44862 444749 26230 0 3 0x98 kqread sshd-session 26230 511901 8256 0 3 0x92 kqread sshd-session 8256 261557 1 0 3 0x88 kqread sshd 30784 89621 44755 74 3 0x1100092 bpf pflogd 44755 66222 1 0 3 0x80 sbwait pflogd 71798 468094 83575 73 3 0x1100090 kqread syslogd 83575 157395 1 0 3 0x100082 sbwait syslogd 22507 503609 1 0 3 0x100080 kqread resolvd 2207 208666 62654 77 3 0x100092 kqread dhcpleased 84233 180700 62654 77 3 0x100092 kqread dhcpleased 62654 102891 1 0 3 0x80 kqread dhcpleased 14631 385089 0 0 3 0x14200 bored smr 53820 199757 0 0 2 0x14200 zerothread 31506 446035 0 0 3 0x14200 aiodoned aiodoned 21048 52772 0 0 3 0x14200 syncer update 67360 41415 0 0 3 0x14200 cleaner cleaner 72478 365700 0 0 7 0x14200 reaper 73758 510393 0 0 3 0x14200 pgdaemon pagedaemon 278 75009 0 0 3 0x14200 bored viomb 40604 123285 0 0 3 0x40014200 acpi0 acpi0 5755 335672 0 0 3 0x40014200 idle1 39612 376345 0 0 3 0x14200 bored softnet3 58411 9091 0 0 3 0x14200 bored softnet2 4997 404120 0 0 3 0x14200 bored softnet1 33385 360117 0 0 3 0x14200 bored softnet0 56790 428730 0 0 3 0x14200 bored systqmp 39879 469500 0 0 3 0x14200 bored systq 20096 190899 0 0 3 0x14200 tmoslp softclockmp 73950 334098 0 0 3 0x40014200 tmoslp softclock 76181 186912 0 0 3 0x40014200 idle0 1 503628 0 0 3 0x82 wait init 0 0 -1 0 3 0x10010200 scheduler swapper ddb{0}> show all locks CPU 1: exclusive mutex &sched_lock r = 0 (0xffffffff839a9e98) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1160 #1 mtx_enter_try+0x178 sys/kern/kern_lock.c:-1 #2 mtx_enter+0x60 sys/kern/kern_lock.c:239 #3 wakeup_n+0x54 sys/kern/kern_synch.c:618 #4 uvm_pmr_freepageq+0x3b6 sys/uvm/uvm_pmemrange.c:1389 #5 km_free+0x36f sys/uvm/uvm_km.c:827 #6 uvm_uarea_free+0x4f sys/uvm/uvm_glue.c:291 #7 reaper+0x1cb sys/kern/kern_exit.c:470 #8 proc_trampoline+0x10 exclusive mutex &uvm.fpageqlock r = 0 (0xffffffff838fc908) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1160 #1 mtx_enter_try+0x178 sys/kern/kern_lock.c:-1 #2 mtx_enter+0x60 sys/kern/kern_lock.c:239 #3 uvm_pmr_freepageq+0x15c sys/uvm/uvm_pmemrange.c:1371 #4 km_free+0x36f sys/uvm/uvm_km.c:827 #5 uvm_uarea_free+0x4f sys/uvm/uvm_glue.c:291 #6 reaper+0x1cb sys/kern/kern_exit.c:470 #7 proc_trampoline+0x10 Process 60765 (syz-executor) thread 0xffff80003c432548 (500548) ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10225 11062K 11557K 166960K 12309 0 pcb 17 13K 13K 166960K 98 0 rtable 186 8K 9K 166960K 421 0 pf 34 17K 19K 166960K 89 0 ifaddr 35 5K 7K 166960K 66 0 ifgroup 49 2K 2K 166960K 102 0 sysctl 3 1K 9K 166960K 8 0 counters 66 36K 37K 166960K 124 0 ioctlops 0 0K 4K 166960K 1546 0 iov 0 0K 28K 166960K 31 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1402 88K 88K 166960K 1982 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 13K 166960K 10 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 63 0 dirhash 12 2K 2K 166960K 27 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 17 61K 97K 166960K 605 0 sigio 1 0K 0K 166960K 7 0 proc 72 91K 140K 166960K 606 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 97 0 in_multi 74 5K 7K 166960K 124 0 ether_multi 1 0K 0K 166960K 7 0 mrt 2 0K 0K 166960K 8 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 199 890K 890K 166960K 199 0 exec 0 0K 1K 166960K 446 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 237 167K 176K 166960K 7513 0 UVM aobj 12 2K 2K 166960K 13 0 pinsyscall 42 84K 106K 166960K 1741 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 25 0 NDP 11 0K 2K 166960K 43 0 temp 45 8680K 8775K 166960K 24795 0 kqueue 16 22K 28K 166960K 116 0 SYN cache 2 16K 16K 166960K 2 0 ddb{0}> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle plcache 128 26 0 0 1 0 1 1 0 8 0 rtpcb 120 58 0 55 1 0 1 1 0 8 0 rtentry 176 125 0 46 6 0 6 6 0 8 0 unpcb 144 392 0 372 4 1 3 4 0 8 2 syncache 336 5 0 5 2 2 0 1 0 8 0 tcpcb 808 192 0 188 8 0 8 8 0 8 7 arp 128 19 0 5 1 0 1 1 0 8 0 inpcb 384 679 0 668 11 3 8 11 0 8 6 nd6 144 26 0 6 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 1192 22 0 21 1 0 1 1 0 8 0 pppxif 1504 3 0 3 3 2 1 1 0 8 1 pffrag 232 3 0 0 1 0 1 1 0 482 0 pffrnode 88 3 0 0 1 0 1 1 0 8 0 pffrent 40 3 0 0 1 0 1 1 0 8 0 pfosfp 40 1428 0 1005 5 0 5 5 0 8 0 pfosfpen 112 1428 0 714 21 0 21 21 0 8 0 pfrktable 1344 1 0 0 1 0 1 1 0 8 0 pftag 88 1 0 0 1 0 1 1 0 8 0 pfstitem 24 51 0 4 1 0 1 1 0 8 0 pfstkey 128 51 0 4 2 0 2 2 0 8 0 pfstate 384 51 0 4 5 0 5 5 0 8 0 pfrule 1344 24 0 16 2 0 2 2 0 8 0 rttmr 136 1 0 1 1 1 0 1 0 8 0 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 560 0 212 30 3 27 30 0 8 3 art_table 32 562 0 212 4 0 4 4 0 8 0 art_node 16 123 0 53 1 0 1 1 0 8 0 sysvmsgpl 40 10 0 6 1 0 1 1 0 8 0 semupl 112 1 0 1 1 1 0 1 0 8 0 semapl 112 24 0 14 1 0 1 1 0 8 0 shmpl 112 10 0 1 1 0 1 1 0 8 0 dirhash 1024 27 0 10 3 0 3 3 0 8 0 dino2pl 256 2520 0 1013 96 1 95 96 0 8 0 ffsino 288 2520 0 1013 109 0 109 109 0 8 0 nchpl 144 3342 0 1644 64 0 64 64 0 8 1 rtmask 32 5 0 5 1 0 1 1 0 8 1 uvmvnodes 80 2996 0 0 62 0 62 62 0 8 0 vnodes 216 2996 0 0 167 0 167 167 0 8 0 namei 1024 11240 0 11240 3 2 1 2 0 8 1 percpumem 16 77 0 29 1 0 1 1 0 8 0 kstatmem 264 56 0 32 3 1 2 3 0 8 0 scsiplug 72 4 0 4 1 0 1 1 0 8 1 scxspl 216 10644 0 10644 11 3 8 8 1 8 8 plimitpl 152 112 0 95 1 0 1 1 0 8 0 sigapl 424 922 0 871 7 1 6 7 0 8 0 knotepl 120 551 0 0 17 0 17 17 0 8 0 kqueuepl 224 269 0 259 5 3 2 5 0 8 1 pipepl 336 140 0 113 3 0 3 3 0 8 0 fdescpl 520 901 0 870 3 0 3 3 0 8 0 filepl 160 5032 0 4809 15 2 13 15 0 8 3 lockfpl 104 144 0 142 1 0 1 1 0 8 0 lockfspl 48 60 0 58 1 0 1 1 0 8 0 sessionpl 144 26 0 17 1 0 1 1 0 8 0 pgrppl 48 43 0 26 1 0 1 1 0 8 0 ucredpl 104 698 0 681 1 0 1 1 0 8 0 zombiepl 144 874 0 871 2 1 1 1 0 8 0 processpl 1208 922 0 871 5 0 5 5 0 8 0 procpl 656 1789 0 1733 7 1 6 7 0 8 0 srpgc 96 4 0 4 2 1 1 1 0 8 1 sosppl 168 5 0 5 2 1 1 1 0 8 1 sockpl 728 1153 0 1119 13 3 10 12 0 8 6 mcl64k 65536 5 0 0 1 0 1 1 0 8 0 mcl16k 16384 4 0 0 1 0 1 1 0 8 0 mcl12k 12288 1 0 0 1 0 1 1 0 8 0 mcl8k 8192 5 0 0 1 0 1 1 0 8 0 mcl4k 4096 128 0 0 16 0 16 16 0 8 0 mcl2k 2048 18 0 0 3 0 3 3 0 8 0 mtagpl 96 24 0 0 1 0 1 1 0 8 0 mbufpl 256 1139 0 0 72 0 72 72 0 8 0 bufpl 280 3363 0 126 232 0 232 232 0 8 0 anonpl 32 7576 0 0 61 0 61 61 0 246 0 amapchunkpl 152 23702 0 23158 29 1 28 28 0 158 5 amappl16 200 2894 0 2753 17 8 9 14 0 8 1 amappl15 192 24 0 23 1 0 1 1 0 8 0 amappl14 184 127 0 114 1 0 1 1 0 8 0 amappl13 176 7 0 7 1 1 0 1 0 8 0 amappl12 168 1566 0 1534 4 1 3 3 0 8 0 amappl11 160 49 0 35 1 0 1 1 0 8 0 amappl10 152 3 0 3 1 1 0 1 0 8 0 amappl9 144 245 0 245 1 1 0 1 0 8 0 amappl8 136 29 0 26 1 0 1 1 0 8 0 amappl7 128 133 0 121 1 0 1 1 0 8 0 amappl6 120 197 0 194 1 0 1 1 0 8 0 amappl5 112 123 0 113 1 0 1 1 0 8 0 amappl4 104 335 0 316 1 0 1 1 0 8 0 amappl3 96 4580 0 4471 5 1 4 4 0 8 0 amappl2 88 674 0 610 2 0 2 2 0 8 0 amappl1 80 10582 0 9983 16 2 14 15 0 8 0 amappl 88 6713 0 6548 5 0 5 5 0 92 0 dma8192 8192 2 0 2 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 128 255 0 255 2 2 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 12 0 1 1 0 1 1 0 8 0 uaddrrnd 24 901 0 870 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 901 0 870 1 0 1 1 0 8 0 vmmpekpl 168 9155 0 9115 3 0 3 3 0 8 0 vmmpepl 168 62769 0 60689 102 4 98 99 0 357 4 vmsppl 480 900 0 870 5 0 5 5 0 8 1 rwobjpl 72 22039 0 17995 75 1 74 74 0 8 0 pdppl 4096 1809 0 1740 111 40 71 87 0 8 2 pvpl 32 13747 0 0 113 1 112 112 0 265 1 pmappl 256 900 0 870 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 468 0 51 13 0 13 13 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace mtx_enter_try(18) at mtx_enter_try+0x65 sys/kern/kern_lock.c:265 mtx_enter(18) at mtx_enter+0x60 sys/kern/kern_lock.c:239 clockintr_unbind(ffff800001422530,1) at clockintr_unbind+0x56 sys/kern/kern_clockintr.c:375 dt_ioctl_record_stop(ffff800001489000) at dt_ioctl_record_stop+0xbc sys/dev/dt/dt_dev.c:575 dtclose(11e5f,81,2000,ffff80002a296a60) at dtclose+0x105 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(11e5f,81,2000,ffff80002a296a60) at dtclose+0x105 sys/dev/dt/dt_dev.c:232 spec_close(ffff80003b02b5d0) at spec_close+0x45f sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd80697a0488,81,fffffd807f7d32d8,ffff80002a296a60) at VOP_CLOSE+0x133 sys/kern/vfs_vops.c:156 vn_closefile(fffffd806aca0920,ffff80002a296a60) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd806aca0920,ffff80002a296a60) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd806aca0920,ffff80002a296a60) at fdrop+0x126 sys/kern/kern_descrip.c:1267 closef(fffffd806aca0920,ffff80002a296a60) at closef+0x192 sys/kern/kern_descrip.c:1251 fdfree(ffff80002a296a60) at fdfree+0x116 sys/kern/kern_descrip.c:1182 exit1(ffff80002a296a60,0,0,1) at exit1+0x58f sys/kern/kern_exit.c:214 sys_exit(ffff80002a296a60,ffff80003b02b940,ffff80003b02b890) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80003b02b940) at syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003b02b940) at syscall+0xb08 sys/arch/amd64/amd64/trap.c:579 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7ce075906180, count: -15 ddb{0}> machine ddbcpu 1