uvm_fault(0xffffffff839b9698, 0xffff8000fffeee08, 0, 1) -> e kernel: page fault trap, code=0 Stopped at mtx_enter+0x6e: movq 0(%r14),%r15 TID PID UID PRFLAGS PFLAGS CPU COMMAND mtx_enter(ffff8000fffeee08) at mtx_enter+0x6e sys/kern/kern_lock.c:549 filt_procdetach(fffffd806c21f5b0) at filt_procdetach+0x4d sys/kern/kern_event.c:432 knote_remove(ffff80002a7b0d10,fffffd807102f2e0,fffffd807102f358,1,1) at knote_remove+0x22e filter_detach sys/kern/kern_event.c:-1 [inline] knote_remove(ffff80002a7b0d10,fffffd807102f2e0,fffffd807102f358,1,1) at knote_remove+0x22e sys/kern/kern_event.c:2154 kqueue_purge(ffff80002a7b0d10,fffffd807102f2e0) at kqueue_purge+0x117 sys/kern/kern_event.c:1890 kqueue_close(fffffd806c422c48,ffff80002a7b0d10) at kqueue_close+0x48 sys/kern/kern_event.c:1934 fdrop(fffffd806c422c48,ffff80002a7b0d10) at fdrop+0x121 sys/kern/kern_descrip.c:1280 closef(fffffd806c422c48,ffff80002a7b0d10) at closef+0x190 sys/kern/kern_descrip.c:1264 fdfree(ffff80002a7b0d10) at fdfree+0x115 sys/kern/kern_descrip.c:1195 exit1(ffff80002a7b0d10,0,0,1) at exit1+0x576 sys/kern/kern_exit.c:215 sys_exit(ffff80002a7b0d10,ffff80003c967e20,ffff80003c967d70) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80003c967e20) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c967e20) at syscall+0x962 sys/arch/amd64/amd64/trap.c:775 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x721c09716cf0, count: 3 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(0xffffffff839b9698, 0xffff8000fffeee08, 0, 1) -> e ddb> trace mtx_enter(ffff8000fffeee08) at mtx_enter+0x6e sys/kern/kern_lock.c:549 filt_procdetach(fffffd806c21f5b0) at filt_procdetach+0x4d sys/kern/kern_event.c:432 knote_remove(ffff80002a7b0d10,fffffd807102f2e0,fffffd807102f358,1,1) at knote_remove+0x22e filter_detach sys/kern/kern_event.c:-1 [inline] knote_remove(ffff80002a7b0d10,fffffd807102f2e0,fffffd807102f358,1,1) at knote_remove+0x22e sys/kern/kern_event.c:2154 kqueue_purge(ffff80002a7b0d10,fffffd807102f2e0) at kqueue_purge+0x117 sys/kern/kern_event.c:1890 kqueue_close(fffffd806c422c48,ffff80002a7b0d10) at kqueue_close+0x48 sys/kern/kern_event.c:1934 fdrop(fffffd806c422c48,ffff80002a7b0d10) at fdrop+0x121 sys/kern/kern_descrip.c:1280 closef(fffffd806c422c48,ffff80002a7b0d10) at closef+0x190 sys/kern/kern_descrip.c:1264 fdfree(ffff80002a7b0d10) at fdfree+0x115 sys/kern/kern_descrip.c:1195 exit1(ffff80002a7b0d10,0,0,1) at exit1+0x576 sys/kern/kern_exit.c:215 sys_exit(ffff80002a7b0d10,ffff80003c967e20,ffff80003c967d70) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80003c967e20) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c967e20) at syscall+0x962 sys/arch/amd64/amd64/trap.c:775 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x721c09716cf0, count: -12 ddb> show registers rdi 0 rsi 0 rbp 0xffff80003c967a30 rbx 0xfffffd806c21f500 rdx 0 rcx 0x1 rax 0xffff80002a7b0d00 r8 0x1 r9 0 r10 0x9c569897b1dc9252 r11 0x893705057aa2396e r12 0x1b r13 0xffff8000fffeed28 r14 0xffff8000fffeee08 r15 0 rip 0xffffffff82f03e0e mtx_enter+0x6e cs 0x8 rflags 0x10297 __ALIGN_SIZE+0xf297 rsp 0xffff80003c967a00 ss 0x10 mtx_enter+0x6e: movq 0(%r14),%r15 ddb> show proc PROC (syz-executor) tid=443732 pid=89191 tcnt=0 stat=onproc flags process=1008 proc=2000 runpri=32, usrpri=50, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0xffff80002a7b0d10 scnt=-1 ecnt=1 forw=0xffffffffffffffff, list=0xffff80002a7b0548,0xffff80002f0ec560 process=0xffff8000ffff9218 user=0xffff80003c962000, vmspace=0xfffffd806c9a1d00 estcpu=0, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 43053 66960 48284 0 2 0 syz-executor 43053 243854 48284 0 2 0x4000000 syz-executor 68635 341061 76666 0 2 0 syz-executor 68635 130136 76666 0 3 0x4000080 ttyout syz-executor 75357 230591 4261 0 2 0 syz-executor 71135 264849 0 0 3 0x14280 nfsidl nfsio 72000 494496 0 0 3 0x14280 nfsidl nfsio 55177 453369 0 0 3 0x14280 nfsidl nfsio 51224 187945 0 0 3 0x14280 nfsidl nfsio 30461 350428 0 0 3 0x14280 nfsidl nfsio 479 163426 0 0 3 0x14280 nfsidl nfsio 46215 292216 0 0 3 0x14280 nfsidl nfsio 68389 357659 0 0 3 0x14280 nfsidl nfsio 45817 344938 0 0 3 0x14280 nfsidl nfsio 91635 344577 0 0 3 0x14280 nfsidl nfsio 307 377616 0 0 3 0x14280 nfsidl nfsio 26753 470730 0 0 3 0x14280 nfsidl nfsio 50272 47868 0 0 3 0x14280 nfsidl nfsio 67476 131323 0 0 3 0x14280 nfsidl nfsio 63138 10720 0 0 3 0x14280 nfsidl nfsio 59329 278755 0 0 3 0x14280 nfsidl nfsio 29916 162759 0 0 3 0x14280 nfsidl nfsio 25962 511274 0 0 3 0x14280 nfsidl nfsio 27170 445213 0 0 3 0x14280 nfsidl nfsio 10597 94998 0 0 3 0x14280 nfsidl nfsio 57083 402046 10369 0 3 0x3000 suspend syz-executor 57083 95385 10369 0 2 0x4081000 syz-executor 57083 470521 10369 0 2 0x4081000 syz-executor 1969 36131 12717 0 2 0 syz-executor 1969 468079 12717 0 3 0x4000080 sbwait syz-executor 1969 335128 12717 0 3 0x4000080 fsleep syz-executor 14659 523794 54036 0 2 0 syz-executor 14659 504605 54036 0 3 0x4000080 fsleep syz-executor 76666 12448 73929 0 3 0x82 nanoslp syz-executor 14201 274723 73929 0 2 0x2 syz-executor 48284 181699 73929 0 3 0x82 nanoslp syz-executor 12717 486690 73929 0 3 0x82 nanoslp syz-executor 4261 300430 73929 0 3 0x82 nanoslp syz-executor 54036 44639 73929 0 3 0x82 nanoslp syz-executor 75886 211226 73929 0 3 0x82 nanoslp syz-executor 10369 240752 73929 0 3 0x82 nanoslp syz-executor 73929 178656 15643 0 3 0x82 kqread syz-executor 15643 190476 88541 0 3 0x10008a sigsusp ksh 88541 317116 6610 0 3 0x98 kqread sshd-session 6610 425173 67835 0 3 0x92 kqread sshd-session 23255 448023 1 0 3 0x100083 ttyin getty 67835 91099 1 0 3 0x88 kqread sshd 71560 220668 89838 73 2 0x1100010 syslogd 89838 228539 1 0 3 0x100082 sbwait syslogd 6947 21650 1 0 3 0x100080 kqread resolvd 21564 44020 55076 77 3 0x100092 kqread dhcpleased 16904 423268 55076 77 3 0x100092 kqread dhcpleased 55076 289900 1 0 3 0x80 kqread dhcpleased 22953 352271 0 0 3 0x14200 bored smr 25446 337728 0 0 2 0x14200 zerothread 55419 382241 0 0 3 0x14200 aiodoned aiodoned 56056 275776 0 0 3 0x14200 syncer update 65489 343123 0 0 3 0x14200 cleaner cleaner 90717 302621 0 0 3 0x14200 reaper reaper 87658 221346 0 0 3 0x14200 pgdaemon pagedaemon 32852 487433 0 0 3 0x14200 bored viomb 68856 215586 0 0 3 0x40014200 acpi0 acpi0 6340 254837 0 0 3 0x14200 bored softnet0 87797 356721 0 0 3 0x14200 bored systqmp 85541 409153 0 0 3 0x14200 bored systq 37006 265189 0 0 3 0x40014200 tmoslp softclock 4072 62736 0 0 3 0x40014200 idle0 1 167962 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 11030 12104K 12364K 166960K 12242 0 pcb 18 14K 16K 166960K 128 0 rtable 247 7K 7K 166960K 375 0 pf 30 12K 13K 166960K 36 0 ifaddr 42 7K 7K 166960K 46 0 ifgroup 50 2K 2K 166960K 59 0 sysctl 1 1K 9K 166960K 5 0 counters 33 17K 17K 166960K 35 0 ioctlops 0 0K 4K 166960K 42 0 iov 0 0K 12K 166960K 6 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1345 85K 85K 166960K 1441 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 5K 166960K 3 0 VM map 2 1K 1K 166960K 2 0 sem 6 0K 0K 166960K 8 0 dirhash 12 2K 2K 166960K 15 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 17 61K 93K 166960K 220 0 sigio 0 0K 0K 166960K 5 0 proc 59 59K 100K 166960K 489 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 13 0 in_multi 99 7K 7K 166960K 100 0 ether_multi 1 0K 0K 166960K 1 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 61 281K 281K 166960K 61 0 exec 0 0K 2K 166960K 358 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 219 142K 152K 166960K 3638 0 UVM aobj 4 2K 2K 166960K 5 0 pinsyscall 38 76K 94K 166960K 1268 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 12 0 NDP 11 0K 1K 166960K 29 0 temp 37 8662K 8726K 166960K 8001 0 kqueue 15 22K 24K 166960K 33 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 42 0 39 1 0 1 1 0 8 0 rtentry 136 113 0 1 4 0 4 4 0 8 0 unpcb 144 77 0 62 1 0 1 1 0 8 0 syncache 336 3 0 3 1 0 1 1 0 8 1 tcpcb 736 22 0 17 1 0 1 1 0 8 0 arp 96 18 0 0 1 0 1 1 0 8 0 inpcb 328 194 0 182 7 0 7 7 0 8 5 ip6q 72 1 0 0 1 0 1 1 0 8 0 ip6af 40 1 0 0 1 0 1 1 0 8 0 nd6 112 24 0 0 1 0 1 1 0 8 0 pkpcb 40 1 0 1 1 0 1 1 0 8 1 kcovpl 48 8 0 0 1 0 1 1 0 8 0 ppxss 1072 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 256 458 0 0 29 0 29 29 0 8 0 art_table 40 461 0 0 5 0 5 5 0 8 0 art_node 32 113 0 11 1 0 1 1 0 8 0 sysvmsgpl 40 3 0 1 1 0 1 1 0 8 0 semapl 112 5 0 1 1 0 1 1 0 8 0 shmpl 112 2 0 1 1 0 1 1 0 8 0 dirhash 1024 19 0 2 3 0 3 3 0 8 0 dino2pl 256 1738 0 233 95 0 95 95 0 8 0 ffsino 256 1738 0 233 95 0 95 95 0 8 0 nchpl 144 2032 0 344 63 0 63 63 0 8 0 vnodes 216 1859 0 0 104 0 104 104 0 8 0 namei 1024 5981 0 5980 2 0 2 2 0 8 1 kstatmem 264 26 0 4 2 0 2 2 0 8 0 acpiwqpl 32 1 0 1 1 0 1 1 1 8 1 scxspl 216 6733 0 6733 4 0 4 4 1 8 4 plimitpl 152 72 0 55 1 0 1 1 0 8 0 sigapl 424 760 0 698 34 4 30 34 0 8 22 knotepl 120 5615 0 5310 10 0 10 10 0 8 0 kqueuepl 184 34 0 24 1 0 1 1 0 8 0 pipepl 304 119 0 92 3 0 3 3 0 8 0 fdescpl 448 487 0 458 5 0 5 5 0 8 1 filepl 120 1912 0 1696 10 0 10 10 0 8 2 lockfpl 104 26 0 24 1 0 1 1 0 8 0 lockfspl 48 13 0 11 1 0 1 1 0 8 0 sessionpl 144 21 0 13 1 0 1 1 0 8 0 pgrppl 48 29 0 13 1 0 1 1 0 8 0 ucredpl 104 172 0 161 1 0 1 1 0 8 0 zombiepl 144 700 0 698 1 0 1 1 0 8 0 processpl 1152 760 0 698 22 2 20 22 0 8 14 procpl 664 887 0 818 27 2 25 27 0 8 17 sockpl 552 320 0 290 7 0 7 7 0 8 4 mcl64k 65536 9 0 9 1 0 1 1 0 8 1 mcl8k 8192 8 0 8 1 0 1 1 0 8 1 mcl4k 4096 2550 0 2497 13 0 13 13 0 8 6 mcl2k 2048 336 0 332 1 0 1 1 0 8 0 mtagpl 96 7 0 3 1 0 1 1 0 8 0 mbufpl 256 5019 0 4851 17 0 17 17 0 8 5 bufpl 280 2478 0 120 169 0 169 169 0 8 0 anonpl 24 106202 0 102748 32 0 32 32 0 187 10 amapchunkpl 152 10532 0 10090 25 0 25 25 0 158 4 amappl16 200 1999 0 1944 5 0 5 5 0 8 2 amappl15 192 58 0 58 1 0 1 1 0 8 1 amappl14 184 36 0 36 1 0 1 1 0 8 1 amappl13 176 397 0 396 1 0 1 1 0 8 0 amappl12 168 822 0 785 2 0 2 2 0 8 0 amappl11 160 49 0 49 1 0 1 1 0 8 1 amappl10 152 48 0 37 1 0 1 1 0 8 0 amappl9 144 250 0 250 1 0 1 1 0 8 1 amappl8 136 23 0 22 1 0 1 1 0 8 0 amappl7 128 77 0 76 1 0 1 1 0 8 0 amappl6 120 267 0 256 1 0 1 1 0 8 0 amappl5 112 73 0 66 1 0 1 1 0 8 0 amappl4 104 365 0 341 1 0 1 1 0 8 0 amappl3 96 1793 0 1698 3 0 3 3 0 8 0 amappl2 88 492 0 437 2 0 2 2 0 8 0 amappl1 80 8936 0 8410 13 0 13 13 0 8 2 amappl 88 2955 0 2805 4 0 4 4 0 92 0 uvmvnodes 80 98 0 0 2 0 2 2 0 8 0 dma4096 4096 2 0 2 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 128 253 0 253 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 4 0 1 1 0 1 1 0 8 0 uaddrrnd 24 487 0 458 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 487 0 458 1 0 1 1 0 8 0 vmmpekpl 168 6120 0 6055 3 0 3 3 0 8 0 vmmpepl 168 38714 0 36932 81 0 81 81 0 357 0 vmsppl 368 486 0 458 4 0 4 4 0 8 1 rwobjpl 40 13790 0 12847 11 0 11 11 0 8 1 pdppl 4096 981 0 916 95 26 69 81 0 8 4 pvpl 32 243075 0 234400 100 0 100 100 0 265 23 pmappl 216 486 0 458 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 369 0 26 10 0 10 10 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace mtx_enter(ffff8000fffeee08) at mtx_enter+0x6e sys/kern/kern_lock.c:549 filt_procdetach(fffffd806c21f5b0) at filt_procdetach+0x4d sys/kern/kern_event.c:432 knote_remove(ffff80002a7b0d10,fffffd807102f2e0,fffffd807102f358,1,1) at knote_remove+0x22e filter_detach sys/kern/kern_event.c:-1 [inline] knote_remove(ffff80002a7b0d10,fffffd807102f2e0,fffffd807102f358,1,1) at knote_remove+0x22e sys/kern/kern_event.c:2154 kqueue_purge(ffff80002a7b0d10,fffffd807102f2e0) at kqueue_purge+0x117 sys/kern/kern_event.c:1890 kqueue_close(fffffd806c422c48,ffff80002a7b0d10) at kqueue_close+0x48 sys/kern/kern_event.c:1934 fdrop(fffffd806c422c48,ffff80002a7b0d10) at fdrop+0x121 sys/kern/kern_descrip.c:1280 closef(fffffd806c422c48,ffff80002a7b0d10) at closef+0x190 sys/kern/kern_descrip.c:1264 fdfree(ffff80002a7b0d10) at fdfree+0x115 sys/kern/kern_descrip.c:1195 exit1(ffff80002a7b0d10,0,0,1) at exit1+0x576 sys/kern/kern_exit.c:215 sys_exit(ffff80002a7b0d10,ffff80003c967e20,ffff80003c967d70) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80003c967e20) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c967e20) at syscall+0x962 sys/arch/amd64/amd64/trap.c:775 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x721c09716cf0, count: -12 ddb> machine ddbcpu 1 No such command ddb> trace mtx_enter(ffff8000fffeee08) at mtx_enter+0x6e sys/kern/kern_lock.c:549 filt_procdetach(fffffd806c21f5b0) at filt_procdetach+0x4d sys/kern/kern_event.c:432 knote_remove(ffff80002a7b0d10,fffffd807102f2e0,fffffd807102f358,1,1) at knote_remove+0x22e filter_detach sys/kern/kern_event.c:-1 [inline] knote_remove(ffff80002a7b0d10,fffffd807102f2e0,fffffd807102f358,1,1) at knote_remove+0x22e sys/kern/kern_event.c:2154 kqueue_purge(ffff80002a7b0d10,fffffd807102f2e0) at kqueue_purge+0x117 sys/kern/kern_event.c:1890 kqueue_close(fffffd806c422c48,ffff80002a7b0d10) at kqueue_close+0x48 sys/kern/kern_event.c:1934 fdrop(fffffd806c422c48,ffff80002a7b0d10) at fdrop+0x121 sys/kern/kern_descrip.c:1280 closef(fffffd806c422c48,ffff80002a7b0d10) at closef+0x190 sys/kern/kern_descrip.c:1264 fdfree(ffff80002a7b0d10) at fdfree+0x115 sys/kern/kern_descrip.c:1195 exit1(ffff80002a7b0d10,0,0,1) at exit1+0x576 sys/kern/kern_exit.c:215 sys_exit(ffff80002a7b0d10,ffff80003c967e20,ffff80003c967d70) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80003c967e20) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80003c967e20) at syscall+0x962 sys/arch/amd64/amd64/trap.c:775 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x721c09716cf0, count: -12