uvm_fault(0xfffffd803f013738, 0x18, 0, 1) -> e kernel: page fault trap, code=0 Stopped at ml_purge+0x21: movq 0(%r14),%r12 ddb> ddb> set $lines = 0 ddb> set $maxwidth = 0 ddb> show panic kernel page fault uvm_fault(0xfffffd803f013738, 0x18, 0, 1) -> e ml_purge(18) at ml_purge+0x21 sys/kern/uipc_mbuf.c:1615 end trace frame: 0xffff8000149ac8a0, count: 0 ddb> trace ml_purge(18) at ml_purge+0x21 sys/kern/uipc_mbuf.c:1615 arp_rtrequest() at arp_rtrequest+0x244 arpinvalidate sys/netinet/if_ether.c:698 [inline] arp_rtrequest() at arp_rtrequest+0x244 sys/netinet/if_ether.c:210 rtm_output(ffff800000a15500,ffff8000149ac9f8,ffff8000149ac950,40,0) at rtm_output+0x3c2 sys/net/rtsock.c:934 route_output(fffffd803abf1800,fffffd803700e780,0,0) at route_output+0x7d7 sys/net/rtsock.c:814 route_usrreq(fffffd803700e780,9,fffffd803abf1800,0,0,ffff8000159fce30) at route_usrreq+0x363 sys/net/rtsock.c:271 sosend(fffffd803700e780,0,ffff8000149acbf0,0,0,0) at sosend+0x660 sys/kern/uipc_socket.c:513 sendit(ffff8000159fce30,3,ffff8000149accd0,0,ffff8000149acde0) at sendit+0x53c sys/kern/uipc_syscalls.c:662 sys_sendto(ffff8000159fce30,ffff8000149acd78,ffff8000149acde0) at sys_sendto+0x80 sys/kern/uipc_syscalls.c:527 syscall(ffff8000149ace50) at syscall+0x511 Xsyscall(6,0,ffffffffffffffd8,0,6,5cc22b51010) at Xsyscall+0x128 end of kernel end trace frame: 0x5cf0b5f17b0, count: -10 ddb> show registers rdi 0xffffffff811aec21 ml_purge+0x21 rsi 0x136 rbp 0xffff8000149ac810 rbx 0 rdx 0x137 rcx 0xffff800016bef000 rax 0xffff800016bef000 r8 0x40 r9 0x5 r10 0xffff800000995a00 r11 0x3f64ba2ddef770bb r12 0xffff8000001722a8 r13 0x11 r14 0x18 r15 0xffff8000009e4970 rip 0xffffffff811aec21 ml_purge+0x21 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff8000149ac7e0 ss 0x10 ml_purge+0x21: movq 0(%r14),%r12 ddb> show proc PROC (syz-executor.0) pid=224692 stat=onproc flags process=0 proc=4000000 pri=86, usrpri=86, nice=20 forw=0xffffffffffffffff, list=0xffff8000159fc4d0,0xffffffff822a6460 process=0xffff8000ffff6010 user=0xffff8000149a7000, vmspace=0xfffffd803f013738 estcpu=36, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 29315 241158 64895 0 2 0 syz-executor.0 *29315 224692 64895 0 7 0x4000000 syz-executor.0 61659 84784 1 0 3 0x100083 ttyin getty 51796 386609 8436 0 2 0x2 syz-executor.1 1406 222729 0 0 3 0x14200 bored sosplice 64895 369844 8436 0 3 0x82 nanosleep syz-executor.0 8436 209003 38347 0 3 0x82 thrsleep syz-fuzzer 8436 521914 38347 0 2 0x4000482 syz-fuzzer 8436 100533 38347 0 3 0x4000082 thrsleep syz-fuzzer 8436 170025 38347 0 3 0x4000082 thrsleep syz-fuzzer 8436 66376 38347 0 3 0x4000082 thrsleep syz-fuzzer 8436 431973 38347 0 3 0x4000082 kqread syz-fuzzer 8436 45153 38347 0 3 0x4000082 thrsleep syz-fuzzer 8436 96402 38347 0 3 0x4000082 thrsleep syz-fuzzer 38347 200455 10159 0 3 0x10008a pause ksh 10159 474369 47602 0 3 0x92 select sshd 47602 182159 1 0 3 0x80 select sshd 39768 196658 76918 73 2 0x100090 syslogd 76918 324470 1 0 3 0x100082 netio syslogd 35432 106140 1 77 3 0x100090 poll dhclient 21646 89277 1 0 3 0x80 poll dhclient 57268 384022 0 0 2 0x14200 zerothread 16850 5808 0 0 3 0x14200 aiodoned aiodoned 50516 120559 0 0 3 0x14200 syncer update 73320 106643 0 0 3 0x14200 cleaner cleaner 9045 254013 0 0 3 0x14200 reaper reaper 15883 193886 0 0 3 0x14200 pgdaemon pagedaemon 48510 504710 0 0 3 0x14200 bored crynlk 19349 464545 0 0 3 0x14200 bored crypto 74980 194906 0 0 3 0x40014200 acpi0 acpi0 43918 323716 0 0 3 0x14200 bored softnet 87628 235389 0 0 3 0x14200 bored systqmp 67059 18842 0 0 3 0x14200 bored systq 50677 128120 0 0 2 0x40014200 softclock 98238 365239 0 0 3 0x40014200 idle0 38648 469124 0 0 3 0x14200 bored smr 1 5999 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 Kern Lim devbuf 9518 6369K 7358K 78643K 27360 0 0 pcb 24 9K 11K 78643K 16749 0 0 rtable 475 28K 30K 78643K 29943 0 0 ifaddr 63 33K 45K 78643K 3630 0 0 counters 19 16K 16K 78643K 19 0 0 ioctlops 0 0K 2K 78643K 276 0 0 iov 0 0K 36K 78643K 897 0 0 mount 1 1K 1K 78643K 1 0 0 vnodes 1196 75K 76K 78643K 9092 0 0 UFS quota 1 32K 32K 78643K 1 0 0 UFS mount 5 36K 36K 78643K 5 0 0 shm 2 1K 9K 78643K 106 0 0 VM map 2 0K 0K 78643K 2 0 0 sem 12 0K 0K 78643K 343 0 0 dirhash 12 2K 2K 78643K 12 0 0 ACPI 1793 195K 288K 78643K 12537 0 0 file desc 5 13K 25K 78643K 21055 0 0 sigio 0 0K 0K 78643K 129 0 0 proc 41 30K 54K 78643K 894 0 0 subproc 32 2K 2K 78643K 51 0 0 NFS srvsock 1 0K 0K 78643K 1 0 0 NFS daemon 1 16K 16K 78643K 1 0 0 ip_moptions 0 0K 0K 78643K 567 0 0 in_multi 33 2K 2K 78643K 286 0 0 ether_multi 1 0K 0K 78643K 41 0 0 mrt 0 0K 0K 78643K 12 0 0 ISOFS mount 1 32K 32K 78643K 1 0 0 MSDOSFS mount 1 16K 16K 78643K 1 0 0 ttys 114 503K 503K 78643K 114 0 0 exec 0 0K 1K 78643K 1358 0 0 pfkey data 0 0K 4K 78643K 2 0 0 pagedep 1 8K 8K 78643K 1 0 0 inodedep 1 32K 32K 78643K 1 0 0 newblk 1 0K 0K 78643K 1 0 0 VM swap 7 26K 26K 78643K 7 0 0 UVM amap 99 21K 30K 78643K 46425 0 0 UVM aobj 130 4K 4K 78643K 152 0 0 memdesc 1 4K 4K 78643K 1 0 0 crypto data 1 1K 1K 78643K 1 0 0 ip6_options 0 0K 1K 78643K 342 0 0 NDP 13 0K 0K 78643K 1101 0 0 temp 1323 2733K 3355K 78643K 61863 0 0 kqueue 0 0K 0K 78643K 37 0 0 SYN cache 2 16K 16K 78643K 2 0 0 ddb> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle arp 64 8 0 2 1 0 1 1 0 8 0 inpcbpl 280 6718 0 6711 2 1 1 2 0 8 0 plimitpl 152 1110 0 1103 1 0 1 1 0 8 0 rtentry 112 3148 0 2958 6 0 6 6 0 8 0 syncache 264 4 0 4 1 1 0 1 0 8 0 tcpcb 544 2698 0 2694 1 0 1 1 0 8 0 nd6 48 9 0 3 1 0 1 1 0 8 0 swfcl 56 1 0 0 1 0 1 1 0 8 0 ppxss 1128 1058 0 1056 18 17 1 1 0 8 0 art_heap8 4096 23 0 0 23 0 23 23 0 8 0 art_heap4 256 276 0 44 15 0 15 15 0 8 0 art_table 32 299 0 44 3 0 3 3 0 8 0 art_node 16 203 0 138 1 0 1 1 0 8 0 sysvmsgpl 40 9 0 4 1 0 1 1 0 8 0 semapl 112 341 0 331 1 0 1 1 0 8 0 shmpl 112 150 0 22 4 0 4 4 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino1pl 128 31214 0 29745 48 0 48 48 0 8 0 ffsino 240 31214 0 29745 89 2 87 87 0 8 0 nchpl 144 58233 0 56617 61 0 61 61 0 8 0 uvmvnodes 72 5926 0 0 108 0 108 108 0 8 0 vnodes 200 5926 0 0 312 0 312 312 0 8 0 namei 1024 153227 0 153226 2 1 1 1 0 8 0 scsiplug 64 25 0 25 10 10 0 1 0 8 0 scxspl 192 179413 0 179413 41 40 1 6 0 8 1 sigapl 432 21225 0 21212 2 0 2 2 0 8 0 futexpl 56 205988 0 205988 2 1 1 1 0 8 1 knotepl 112 4428 0 4409 1 0 1 1 0 8 0 kqueuepl 104 3698 0 3696 1 0 1 1 0 8 0 pipepl 112 3606 0 3587 6 5 1 2 0 8 0 fdescpl 424 21226 0 21212 2 0 2 2 0 8 0 filepl 120 87844 0 87749 5 1 4 5 0 8 0 lockfpl 104 2232 0 2232 26 25 1 1 0 8 1 lockfspl 48 767 0 767 26 25 1 1 0 8 1 sessionpl 112 20 0 10 1 0 1 1 0 8 0 pgrppl 48 85 0 75 1 0 1 1 0 8 0 ucredpl 96 16927 0 16920 1 0 1 1 0 8 0 zombiepl 144 21212 0 21212 3 2 1 1 0 8 1 processpl 840 21241 0 21212 4 0 4 4 0 8 0 procpl 600 45310 0 45273 5 1 4 4 0 8 0 sosppl 128 53 0 53 10 10 0 1 0 8 0 sockpl 384 21914 0 21896 26 23 3 4 0 8 1 mcl64k 65536 1176 0 1176 132 132 0 33 0 8 0 mcl16k 16384 20 0 20 12 12 0 1 0 8 0 mcl12k 12288 111 0 111 34 33 1 1 0 8 1 mcl9k 9216 103 0 103 35 34 1 1 0 8 1 mcl8k 8192 126 0 126 36 35 1 1 0 8 1 mcl4k 4096 934 0 934 32 31 1 1 0 8 1 mcl2k2 2112 58 0 58 27 26 1 1 0 8 1 mcl2k 2048 53683 0 53636 65 57 8 11 0 8 0 mtagpl 80 15 0 15 6 6 0 1 0 8 0 mbufpl 256 247351 0 247188 92 79 13 26 0 8 1 bufpl 256 44379 0 38916 342 0 342 342 0 8 0 anonpl 16 1414698 0 1408877 210 183 27 45 0 62 0 amapchunkpl 152 74599 0 74518 56 52 4 13 0 158 0 amappl16 192 94270 0 93963 173 156 17 30 0 8 0 amappl15 184 12911 0 12909 2 1 1 1 0 8 0 amappl14 176 2193 0 2189 2 1 1 1 0 8 0 amappl12 160 12 0 8 1 0 1 1 0 8 0 amappl11 152 8154 0 8140 1 0 1 1 0 8 0 amappl10 144 65 0 63 2 1 1 1 0 8 0 amappl9 136 530 0 525 1 0 1 1 0 8 0 amappl8 128 179 0 146 2 0 2 2 0 8 0 amappl7 120 34 0 30 1 0 1 1 0 8 0 amappl6 112 8177 0 8164 1 0 1 1 0 8 0 amappl5 104 242 0 232 1 0 1 1 0 8 0 amappl4 96 21381 0 21358 1 0 1 1 0 8 0 amappl3 88 401 0 390 1 0 1 1 0 8 0 amappl2 80 181713 0 181645 4 2 2 3 0 8 0 amappl1 72 361358 0 360948 25 15 10 19 0 8 0 amappl 80 45623 0 45591 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 dma64 64 259 0 259 1 1 0 1 0 8 0 dma32 32 7 0 7 1 1 0 1 0 8 0 dma16 16 17 0 17 1 1 0 1 0 8 0 aobjpl 64 151 0 22 3 0 3 3 0 8 0 uaddrrnd 24 21226 0 21212 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 21226 0 21212 1 0 1 1 0 8 0 vmmpekpl 168 98631 0 98605 2 0 2 2 0 8 0 vmmpepl 168 2021136 0 2019837 219 157 62 74 0 357 0 vmsppl 264 21225 0 21212 2 1 1 2 0 8 0 pdppl 4096 42458 0 42424 6 1 5 6 0 8 0 pvpl 32 4350094 0 4341153 499 422 77 123 0 265 0 pmappl 200 21225 0 21212 1 0 1 1 0 8 0 extentpl 40 41 0 26 1 0 1 1 0 8 0 phpool 112 852 0 352 19 3 16 16 0 8 0