uvm_fault(0xffffffff825b92f0, 0x7f8000100000, 0, 2) -> e kernel: page fault trap, code=0 Stopped at pmap_page_remove+0x33d: xchgq %rax,0(%r12,%rcx,1) ddb> ddb> set $lines = 0 ddb> set $maxwidth = 0 ddb> show panic kernel page fault uvm_fault(0xffffffff825b92f0, 0x7f8000100000, 0, 2) -> e pmap_page_remove(fffffd80051cf180) at pmap_page_remove+0x33d _atomic_swap_64 machine/atomic.h:117 [inline] pmap_page_remove(fffffd80051cf180) at pmap_page_remove+0x33d sys/arch/amd64/amd64/pmap.c:1946 end trace frame: 0xffff80001d326520, count: 0 ddb> trace pmap_page_remove(fffffd80051cf180) at pmap_page_remove+0x33d _atomic_swap_64 machine/atomic.h:117 [inline] pmap_page_remove(fffffd80051cf180) at pmap_page_remove+0x33d sys/arch/amd64/amd64/pmap.c:1946 uvm_anfree_list(fffffd80538c5170,ffff80001d326540) at uvm_anfree_list+0x4e sys/uvm/uvm_anon.c:104 amap_wipeout(fffffd8053a3a3f8) at amap_wipeout+0x171 sys/uvm/uvm_amap.c:461 uvm_unmap_detach(ffff80001d326600,1) at uvm_unmap_detach+0x163 sys/uvm/uvm_map.c:1586 uvm_map_teardown(fffffd8068430cd0) at uvm_map_teardown+0x22c sys/uvm/uvm_map.c:2762 uvmspace_free(fffffd8068430cd0) at uvmspace_free+0x86 sys/uvm/uvm_map.c:3649 uvm_exit(ffff8000ffffa390) at uvm_exit+0x29 sys/uvm/uvm_glue.c:297 reaper(ffff80001d2e2110) at reaper+0x15c sys/kern/kern_exit.c:443 end trace frame: 0x0, count: -8 ddb> show registers rdi 0 rsi 0 rbp 0xffff80001d3264d0 rbx 0 rdx 0x10 rcx 0x7f8000000000 rax 0 r8 0 r9 0x7 r10 0x5777613d1918c5b4 r11 0xaf9228f131aa764b r12 0x100000 acpi_pdirpa+0xebe68 r13 0xfffffd8053a2e810 r14 0x800000006c3b6000 r15 0xfffffd80056e0400 rip 0xffffffff81fdc1cd pmap_page_remove+0x33d cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80001d326440 ss 0x10 pmap_page_remove+0x33d: xchgq %rax,0(%r12,%rcx,1) ddb> show proc PROC (reaper) pid=126276 stat=onproc flags process=14000 proc=200 pri=4, usrpri=50, nice=20 forw=0xffffffffffffffff, list=0xffff80001d2e1ea0,0xffff80001d2e2600 process=0xffff8000ffffd888 user=0xffff80001d321000, vmspace=0xffffffff825b92f0 estcpu=0, cpticks=0, pctcpu=0.0 user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 45664 274092 0 0 3 0x14200 bored sosplice 459 32151 0 0 3 0x14200 acct acct 12944 214234 49606 0 3 0x82 nanosleep syz-executor.0 82387 13501 49606 0 3 0x82 nanosleep syz-executor.1 49606 327400 99179 0 3 0x82 thrsleep syz-fuzzer 49606 412752 99179 0 3 0x4000082 thrsleep syz-fuzzer 49606 386734 99179 0 3 0x4000082 thrsleep syz-fuzzer 49606 324856 99179 0 3 0x4000082 thrsleep syz-fuzzer 49606 301671 99179 0 3 0x4000082 thrsleep syz-fuzzer 49606 105445 99179 0 3 0x4000082 thrsleep syz-fuzzer 49606 55732 99179 0 3 0x4000082 thrsleep syz-fuzzer 49606 380345 99179 0 3 0x4000082 kqread syz-fuzzer 99179 377848 19955 0 3 0x10008a pause ksh 19955 86800 53605 0 3 0x92 select sshd 32852 21822 1 0 3 0x100083 ttyin getty 53605 185801 1 0 3 0x80 select sshd 57911 135103 11909 73 3 0x100090 kqread syslogd 11909 232625 1 0 3 0x100082 netio syslogd 60381 327310 1 77 2 0x100010 dhclient 66498 346467 1 0 3 0x80 poll dhclient 68247 227261 0 0 3 0x14200 bored smr 37061 131861 0 0 2 0x14200 zerothread 66722 352744 0 0 3 0x14200 aiodoned aiodoned 68248 223221 0 0 3 0x14200 syncer update 87373 239139 0 0 3 0x14200 cleaner cleaner *50939 126276 0 0 7 0x14200 reaper 69615 272708 0 0 3 0x14200 pgdaemon pagedaemon 43901 14410 0 0 3 0x14200 bored crynlk 14390 188556 0 0 3 0x14200 bored crypto 22317 427592 0 0 3 0x40014200 acpi0 acpi0 4433 90641 0 0 3 0x14200 bored softnet 57606 95229 0 0 3 0x14200 bored systqmp 58493 502878 0 0 3 0x14200 bored systq 42322 22542 0 0 3 0x40014200 bored softclock 92849 318797 0 0 3 0x40014200 idle0 1 288545 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 9451 6320K 6642K 78643K 13912 0 pcb 13 8K 8K 78643K 534 0 rtable 87 2K 3K 78643K 1579 0 ifaddr 37 13K 16K 78643K 1245 0 counters 21 16K 16K 78643K 238 0 ioctlops 0 0K 2K 78643K 88 0 iov 0 0K 16K 78643K 16 0 mount 1 1K 1K 78643K 1 0 vnodes 1229 77K 77K 78643K 3486 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 9K 78643K 14 0 VM map 2 0K 0K 78643K 2 0 sem 12 0K 0K 78643K 117 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1794 195K 288K 78643K 12646 0 file desc 4 9K 25K 78643K 1888 0 sigio 0 0K 0K 78643K 10 0 proc 51 38K 63K 78643K 386 0 subproc 32 2K 2K 78643K 34 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 6 0 in_multi 33 2K 2K 78643K 62 0 ether_multi 1 0K 0K 78643K 3 0 mrt 0 0K 0K 78643K 5 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 37 175K 175K 78643K 37 0 exec 0 0K 1K 78643K 454 0 pagedep 1 8K 8K 78643K 1 0 inodedep 1 32K 32K 78643K 1 0 newblk 1 0K 0K 78643K 1 0 VM swap 7 26K 26K 78643K 7 0 UVM amap 101 53K 54K 78643K 4722 0 UVM aobj 28 2K 2K 78643K 34 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 17 0 NDP 5 0K 0K 78643K 228 0 temp 69 3013K 3077K 78643K 24984 0 kqueue 3 4K 8K 78643K 7 0 SYN cache 2 16K 16K 78643K 2 0 ddb> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle arp 64 6 0 2 1 0 1 1 0 8 0 rtpcb 80 185 0 183 1 0 1 1 0 8 0 rtentry 112 60 0 25 2 0 2 2 0 8 0 unpcb 120 217 0 209 1 0 1 1 0 8 0 syncache 264 4 0 4 1 1 0 1 0 8 0 tcpcb 544 377 0 373 1 0 1 1 0 8 0 inpcb 280 1324 0 1317 1 0 1 1 0 8 0 rttmr 72 2 0 2 1 1 0 1 0 8 0 nd6 48 9 0 7 1 0 1 1 0 8 0 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 269 0 108 13 1 12 13 0 8 0 art_table 32 271 0 108 2 0 2 2 0 8 0 art_node 16 59 0 26 1 0 1 1 0 8 0 sysvmsgpl 40 2 0 2 1 0 1 1 0 8 1 semupl 112 2 0 2 2 2 0 1 0 8 0 semapl 112 113 0 103 1 0 1 1 0 8 0 shmpl 112 32 0 6 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino1pl 128 4057 0 2658 46 0 46 46 0 8 0 ffsino 240 4057 0 2658 83 0 83 83 0 8 0 nchpl 144 6659 0 5045 60 0 60 60 0 8 0 uvmvnodes 72 5926 0 0 108 0 108 108 0 8 0 vnodes 208 5926 0 0 312 0 312 312 0 8 0 namei 1024 20074 0 20074 1 0 1 1 0 8 1 vcpupl 1984 4 0 0 1 0 1 1 0 8 0 vmpool 528 4 0 0 1 0 1 1 0 8 0 scxspl 192 17848 0 17848 1 0 1 1 0 8 1 plimitpl 152 20 0 13 1 0 1 1 0 8 0 sigapl 424 2076 0 2047 4 0 4 4 0 8 0 futexpl 56 24185 0 24185 1 0 1 1 0 8 1 knotepl 112 59 0 40 1 0 1 1 0 8 0 kqueuepl 144 20 0 18 1 0 1 1 0 8 0 pipelkpl 16 191 0 181 1 0 1 1 0 8 0 pipepl 120 382 0 363 1 0 1 1 0 8 0 fdescpl 432 2060 0 2047 2 0 2 2 0 8 0 filepl 120 10886 0 10791 4 0 4 4 0 8 1 lockfpl 104 1698 0 1697 1 0 1 1 0 8 0 lockfspl 48 486 0 485 1 0 1 1 0 8 0 sessionpl 112 17 0 7 1 0 1 1 0 8 0 pgrppl 48 23 0 13 1 0 1 1 0 8 0 ucredpl 96 1737 0 1730 1 0 1 1 0 8 0 zombiepl 144 2047 0 2045 1 0 1 1 0 8 0 processpl 896 2076 0 2045 4 0 4 4 0 8 0 procpl 624 4050 0 4012 5 1 4 4 0 8 0 sockpl 400 1736 0 1719 3 0 3 3 0 8 1 mcl64k 65536 6 0 6 3 2 1 1 0 8 1 mcl12k 12288 10 0 10 3 3 0 1 0 8 0 mcl9k 9216 2 0 2 2 2 0 1 0 8 0 mcl8k 8192 5 0 5 3 3 0 1 0 8 0 mcl4k 4096 29 0 29 3 2 1 1 0 8 1 mcl2k2 2112 3 0 3 2 2 0 1 0 8 0 mcl2k 2048 57261 0 57218 18 11 7 13 0 8 0 mtagpl 80 35 0 34 2 1 1 1 0 8 0 mbufpl 256 101536 0 101472 19 6 13 17 0 8 2 bufpl 280 6120 0 736 385 0 385 385 0 8 0 anonpl 16 135280 0 123004 69 18 51 64 0 107 0 amapchunkpl 152 6670 0 6542 8 2 6 8 0 158 0 amappl16 192 8588 0 7914 48 13 35 44 0 8 1 amappl15 184 1 0 0 1 0 1 1 0 8 0 amappl14 176 641 0 638 2 1 1 1 0 8 0 amappl13 168 24 0 23 1 0 1 1 0 8 0 amappl12 160 8 0 8 1 1 0 1 0 8 0 amappl11 152 1260 0 1246 1 0 1 1 0 8 0 amappl10 144 14 0 10 1 0 1 1 0 8 0 amappl9 136 356 0 353 1 0 1 1 0 8 0 amappl8 128 266 0 251 1 0 1 1 0 8 0 amappl7 120 107 0 96 1 0 1 1 0 8 0 amappl6 112 1221 0 1217 1 0 1 1 0 8 0 amappl5 104 826 0 815 1 0 1 1 0 8 0 amappl4 96 1548 0 1516 2 1 1 2 0 8 0 amappl3 88 120 0 115 1 0 1 1 0 8 0 amappl2 80 14875 0 14810 3 1 2 3 0 8 0 amappl1 72 42105 0 41697 26 17 9 20 0 8 0 amappl 80 4271 0 4229 1 0 1 1 0 84 0 dma4096 4096 1 0 1 1 1 0 1 0 8 0 dma256 256 6 0 6 1 1 0 1 0 8 0 dma128 128 253 0 253 1 1 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 64 33 0 6 1 0 1 1 0 8 0 uaddrrnd 24 2064 0 2047 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 2064 0 2047 1 0 1 1 0 8 0 vmmpekpl 168 13549 0 13519 2 0 2 2 0 8 0 vmmpepl 168 232909 0 231217 107 26 81 90 0 357 4 vmsppl 272 2063 0 2046 3 1 2 2 0 8 0 pdppl 4096 4134 0 4096 7 1 6 6 0 8 0 pvpl 32 403204 0 388062 167 38 129 157 0 265 4 pmappl 200 2063 0 2046 1 0 1 1 0 8 0 extentpl 40 46 0 29 1 0 1 1 0 8 0 phpool 112 169 0 30 5 0 5 5 0 8 0