uvm_fault(0xffffffff8250bc90, 0xfffffd0000000018, 0, 1) -> e kernel: page fault trap, code=0 Stopped at m_copym+0xae: movl 0x18(%r15),%r14d ddb> ddb> set $lines = 0 ddb> set $maxwidth = 0 ddb> show panic kernel page fault uvm_fault(0xffffffff8250bc90, 0xfffffd0000000018, 0, 1) -> e m_copym(fffffd8006278100,ec,580,2) at m_copym+0xae m_getptr sys/kern/uipc_mbuf.c:1033 [inline] m_copym(fffffd8006278100,ec,580,2) at m_copym+0xae sys/kern/uipc_mbuf.c:657 end trace frame: 0xffff80001d35fe00, count: 0 ddb> trace m_copym(fffffd8006278100,ec,580,2) at m_copym+0xae m_getptr sys/kern/uipc_mbuf.c:1033 [inline] m_copym(fffffd8006278100,ec,580,2) at m_copym+0xae sys/kern/uipc_mbuf.c:657 tcp_output(ffff8000009e5980) at tcp_output+0x154d sys/netinet/tcp_output.c:673 tcp_usrreq(fffffd805d901788,9,fffffd8006278000,0,0,ffff8000ffff49f0) at tcp_usrreq+0xa54 sosend(fffffd805d901788,0,ffff80001d360058,0,0,80) at sosend+0x669 sys/kern/uipc_socket.c:524 dofilewritev(ffff8000ffff49f0,4,ffff80001d360058,0,ffff80001d360140) at dofilewritev+0x1ac sys/kern/sys_generic.c:364 sys_write(ffff8000ffff49f0,ffff80001d3600f0,ffff80001d360140) at sys_write+0x83 sys/kern/sys_generic.c:284 syscall(ffff80001d3601c0) at syscall+0x507 sys/arch/amd64/amd64/trap.c:555 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7fffff48e0, count: -8 ddb> show registers rdi 0xffffffff rsi 0x5c rbp 0xffff80001d35fc60 rbx 0x5c rdx 0x580 rcx 0x2 rax 0 r8 0 r9 0x5 r10 0x3d388f2aee36dbe3 r11 0xf58f54ab6240ec2e r12 0 r13 0x5c r14 0x90 r15 0xfffffd0000000000 rip 0xffffffff818b001e m_copym+0xae cs 0x8 rflags 0x10206 __ALIGN_SIZE+0xf206 rsp 0xffff80001d35fbd0 ss 0x10 m_copym+0xae: movl 0x18(%r15),%r14d ddb> show proc PROC (sshd) pid=167496 stat=onproc flags process=12 proc=0 pri=50, usrpri=50, nice=20 forw=0xffffffffffffffff, list=0xffff8000ffff5648,0xffff8000ffff4020 process=0xffff80001d3937f0 user=0xffff80001d35b000, vmspace=0xfffffd806bc12aa0 estcpu=0, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 4840 399724 359 0 2 0 syz-executor.0 4840 164612 359 0 3 0x4000080 select syz-executor.0 359 223560 30357 0 2 0x482 syz-executor.0 93318 225780 0 0 3 0x14200 bored sosplice 86043 451637 30357 0 2 0x2 syz-executor.1 30357 103182 12037 0 3 0x82 thrsleep syz-fuzzer 30357 508976 12037 0 2 0x4000482 syz-fuzzer 30357 16816 12037 0 3 0x4000082 thrsleep syz-fuzzer 30357 415774 12037 0 3 0x4000082 thrsleep syz-fuzzer 30357 510961 12037 0 3 0x4000082 thrsleep syz-fuzzer 30357 252519 12037 0 3 0x4000082 thrsleep syz-fuzzer 30357 133125 12037 0 3 0x4000082 thrsleep syz-fuzzer 30357 244525 12037 0 2 0x4000002 syz-fuzzer 12037 195679 7885 0 3 0x10008a pause ksh * 7885 167496 1062 0 7 0x12 sshd 48527 289390 1 0 3 0x100083 ttyin getty 1062 334893 1 0 3 0x80 select sshd 8206 41301 13582 73 3 0x100090 kqread syslogd 13582 42171 1 0 3 0x100082 netio syslogd 44054 496603 1 77 3 0x100090 poll dhclient 81309 34770 1 0 3 0x80 poll dhclient 22863 137599 0 0 2 0x14200 zerothread 86366 316327 0 0 3 0x14200 aiodoned aiodoned 79942 141446 0 0 3 0x14200 syncer update 44647 99638 0 0 3 0x14200 cleaner cleaner 90680 107221 0 0 3 0x14200 reaper reaper 52720 474217 0 0 3 0x14200 pgdaemon pagedaemon 77505 382070 0 0 3 0x14200 bored crynlk 87967 505464 0 0 3 0x14200 bored crypto 35618 139283 0 0 3 0x40014200 acpi0 acpi0 39106 64140 0 0 2 0x14200 softnet 65445 364862 0 0 3 0x14200 bored systqmp 32220 349845 0 0 3 0x14200 bored systq 19055 288744 0 0 3 0x40014200 bored softclock 79537 505236 0 0 3 0x40014200 idle0 30901 276179 0 0 3 0x14200 bored smr 1 235560 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 9526 6626K 6877K 78643K 11668 0 pcb 13 8K 8K 78643K 136 0 rtable 120 12K 12K 78643K 425 0 ifaddr 75 15K 15K 78643K 139 0 counters 19 16K 16K 78643K 19 0 ioctlops 0 0K 2K 78643K 60 0 iov 0 0K 24K 78643K 248 0 mount 1 1K 1K 78643K 1 0 vnodes 1220 77K 77K 78643K 1587 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 5 0 VM map 2 0K 0K 78643K 2 0 sem 12 0K 0K 78643K 209 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1794 195K 288K 78643K 12646 0 file desc 5 13K 25K 78643K 461 0 sigio 0 0K 0K 78643K 14 0 proc 49 38K 63K 78643K 474 0 subproc 32 2K 2K 78643K 68 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 44 0 in_multi 61 3K 3K 78643K 88 0 ether_multi 1 0K 0K 78643K 2 0 mrt 0 0K 0K 78643K 6 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 60 265K 265K 78643K 60 0 exec 0 0K 1K 78643K 264 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 146 153K 153K 78643K 2036 0 UVM aobj 22 4K 5K 78643K 26 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 127 0 NDP 12 0K 0K 78643K 29 0 temp 135 3031K 3095K 78643K 13879 0 kqueue 0 0K 0K 78643K 2 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 16 0 9 1 0 1 1 0 8 0 rtpcb 80 69 0 67 1 0 1 1 0 8 0 rtentry 112 85 0 38 2 0 2 2 0 8 0 unpcb 120 281 0 273 1 0 1 1 0 8 0 syncache 264 6 0 6 2 2 0 1 0 8 0 sackhl 24 1 0 1 1 1 0 1 0 8 0 tcpqe 32 486 0 486 2 2 0 1 0 8 0 tcpcb 544 448 0 444 2 0 2 2 0 8 1 ipq 40 6 0 6 2 2 0 1 0 8 0 ipqe 40 100 0 100 2 2 0 1 0 8 0 inpcb 280 1144 0 1137 2 0 2 2 0 8 1 rttmr 72 2 0 2 2 2 0 1 0 8 0 nd6 48 8 0 4 1 0 1 1 0 8 0 pkpcb 40 2 0 2 1 1 0 1 0 8 0 ppxss 1128 5 0 5 1 1 0 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 338 0 105 15 0 15 15 0 8 0 art_table 32 339 0 105 2 0 2 2 0 8 0 art_node 16 82 0 39 1 0 1 1 0 8 0 sysvmsgpl 40 17 0 6 1 0 1 1 0 8 0 semupl 112 1 0 1 1 1 0 1 0 8 0 semapl 112 205 0 195 1 0 1 1 0 8 0 shmpl 112 24 0 4 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino1pl 128 2022 0 623 46 0 46 46 0 8 0 ffsino 240 2022 0 623 83 0 83 83 0 8 0 nchpl 144 2987 0 1380 61 0 61 61 0 8 0 uvmvnodes 72 2351 0 0 43 0 43 43 0 8 0 vnodes 208 2351 0 0 124 0 124 124 0 8 0 namei 1024 8475 0 8475 1 0 1 1 0 8 1 vcpupl 1984 19 0 0 3 0 3 3 0 8 0 vmpool 528 20 0 1 2 0 2 2 0 8 0 scsiplug 64 1 0 1 1 1 0 1 0 8 0 scxspl 192 8395 0 8395 2 1 1 1 0 8 1 plimitpl 152 68 0 61 1 0 1 1 0 8 0 sigapl 432 626 0 613 2 0 2 2 0 8 0 futexpl 56 13955 0 13955 1 0 1 1 0 8 1 knotepl 112 147 0 128 1 0 1 1 0 8 0 kqueuepl 104 147 0 145 1 0 1 1 0 8 0 pipepl 128 422 0 403 3 1 2 2 0 8 1 fdescpl 424 627 0 613 2 0 2 2 0 8 0 filepl 120 5223 0 5127 5 1 4 5 0 8 1 lockfpl 104 180 0 179 1 0 1 1 0 8 0 lockfspl 48 52 0 51 1 0 1 1 0 8 0 sessionpl 112 19 0 9 1 0 1 1 0 8 0 pgrppl 48 29 0 19 1 0 1 1 0 8 0 ucredpl 96 509 0 502 1 0 1 1 0 8 0 zombiepl 144 613 0 613 1 0 1 1 0 8 1 processpl 872 642 0 613 4 0 4 4 0 8 0 procpl 632 1169 0 1132 4 0 4 4 0 8 0 sosppl 128 8 0 8 2 2 0 1 0 8 0 sockpl 384 1506 0 1489 5 1 4 5 0 8 2 mcl64k 65536 293 0 293 33 33 0 33 0 8 0 mcl16k 16384 14 0 14 2 1 1 1 0 8 1 mcl12k 12288 12 0 12 2 1 1 1 0 8 1 mcl9k 9216 14 0 14 2 1 1 1 0 8 1 mcl8k 8192 77 0 77 1 0 1 1 0 8 1 mcl4k 4096 60 0 59 2 1 1 1 0 8 0 mcl2k2 2112 3 0 3 2 1 1 1 0 8 1 mcl2k 2048 69567 0 69513 26 18 8 19 0 8 0 mtagpl 80 37 0 11 2 1 1 1 0 8 0 mbufpl 256 114778 0 114620 34 21 13 22 0 8 0 bufpl 280 9189 0 2724 462 0 462 462 0 8 0 anonpl 16 113116 0 93326 103 13 90 98 0 107 8 amapchunkpl 152 3591 0 3429 23 11 12 17 0 158 4 amappl16 192 4675 0 3555 85 20 65 69 0 8 8 amappl15 184 56 0 51 1 0 1 1 0 8 0 amappl14 176 175 0 173 1 0 1 1 0 8 0 amappl13 168 62 0 58 1 0 1 1 0 8 0 amappl12 160 8 0 7 2 1 1 1 0 8 0 amappl11 152 57 0 45 1 0 1 1 0 8 0 amappl10 144 12 0 10 1 0 1 1 0 8 0 amappl9 136 791 0 787 1 0 1 1 0 8 0 amappl8 128 339 0 311 1 0 1 1 0 8 0 amappl7 120 101 0 90 1 0 1 1 0 8 0 amappl6 112 53 0 48 1 0 1 1 0 8 0 amappl5 104 163 0 152 1 0 1 1 0 8 0 amappl4 96 833 0 799 1 0 1 1 0 8 0 amappl3 88 209 0 202 1 0 1 1 0 8 0 amappl2 80 4223 0 4149 3 1 2 3 0 8 0 amappl1 72 21245 0 20832 27 18 9 20 0 8 0 amappl 80 1463 0 1410 2 0 2 2 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 25 0 4 1 0 1 1 0 8 0 uaddrrnd 24 647 0 614 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 647 0 614 1 0 1 1 0 8 0 vmmpekpl 168 8064 0 8041 2 0 2 2 0 8 0 vmmpepl 168 84577 0 82297 169 28 141 141 0 357 36 vmsppl 272 646 0 614 3 0 3 3 0 8 0 pdppl 4096 1300 0 1247 8 1 7 7 0 8 0 pvpl 32 309412 0 287347 302 24 278 299 0 265 96 pmappl 200 646 0 614 2 0 2 2 0 8 0 extentpl 40 46 0 29 1 0 1 1 0 8 0 phpool 112 216 0 77 6 0 6 6 0 8 1