uvm_fault(0xffffffff827c7318, 0xfffffd0000000008, 0, 1) -> e kernel: page fault trap, code=0 Stopped at ml_dequeue+0x28: movq 0x8(%r14),%rax ddb> ddb> set $lines = 0 ddb> set $maxwidth = 0 ddb> show panic kernel page fault uvm_fault(0xffffffff827c7318, 0xfffffd0000000008, 0, 1) -> e ml_dequeue(ffff8000006b5048) at ml_dequeue+0x28 sys/kern/uipc_mbuf.c:1597 end trace frame: 0xffff80001e7bd6e0, count: 0 ddb> trace ml_dequeue(ffff8000006b5048) at ml_dequeue+0x28 sys/kern/uipc_mbuf.c:1597 ifq_deq_sleep(ffff800000ac2a78,ffff80001e7bd6f8,10,117,ffffffff823e81ce,ffff800000ac2e04) at ifq_deq_sleep+0x118 sys/net/ifq.c:408 tun_dev_read(5d00,ffff80001e7bd9c8,10) at tun_dev_read+0xd6 sys/net/if_tun.c:778 spec_read(ffff80001e7bd810) at spec_read+0xe9 sys/kern/spec_vnops.c:222 VOP_READ(fffffd805d7d9c30,ffff80001e7bd9c8,10,fffffd806c3bfba0) at VOP_READ+0xbf sys/kern/vfs_vops.c:247 vn_read(fffffd800605a880,ffff80001e7bd9c8,0) at vn_read+0x11f sys/kern/vfs_vnops.c:375 dofilereadv(ffff80001d718600,f0,ffff80001e7bd9c8,0,ffff80001e7bdab0) at dofilereadv+0x1a1 sys/kern/sys_generic.c:237 sys_read(ffff80001d718600,ffff80001e7bda60,ffff80001e7bdab0) at sys_read+0x83 sys/kern/sys_generic.c:157 syscall(ffff80001e7bdb30) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x879d77257a0, count: -10 ddb> show registers rdi 0xffffffff822dcfc0 ml_dequeue+0x20 rsi 0x4c rbp 0xffff80001e7bd630 rbx 0xfffffd0000000000 rdx 0x4d rcx 0xffff80001d979000 rax 0xffff80001d979000 r8 0xffffffff823e81ce pp_r600_decoded_lanes+0x868c r9 0xffff800000ac2e04 r10 0xd0e9d2395d224244 r11 0x78b1e3eef4855cb5 r12 0x117 r13 0xffff800000ac2e04 r14 0xfffffd0000000000 r15 0xffff8000006b5048 rip 0xffffffff822dcfc8 ml_dequeue+0x28 cs 0x8 rflags 0x10286 __ALIGN_SIZE+0xf286 rsp 0xffff80001e7bd600 ss 0x10 ml_dequeue+0x28: movq 0x8(%r14),%rax ddb> show proc PROC (syz-executor.0) pid=465019 stat=onproc flags process=0 proc=4000000 pri=32, usrpri=86, nice=20 forw=0xffffffffffffffff, list=0xffff80001d7174f0,0xffffffff82837578 process=0xffff8000ffffb5a0 user=0xffff80001e7b8000, vmspace=0xfffffd8053992560 estcpu=36, cpticks=6, pctcpu=0.0 user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 56291 19233 24211 0 2 0 syz-executor.0 56291 503366 24211 0 3 0x4000080 kqread syz-executor.0 *56291 465019 24211 0 7 0x4000000 syz-executor.0 14285 190275 81283 0 3 0x80 nanosleep syz-executor.1 14285 69723 81283 0 3 0x4000080 netio syz-executor.1 14285 252221 81283 0 3 0x4000080 fsleep syz-executor.1 81283 374883 75250 0 3 0x82 nanosleep syz-executor.1 24211 180565 75250 0 3 0x82 nanosleep syz-executor.0 75250 86867 20989 0 3 0x82 thrsleep syz-fuzzer 75250 189142 20989 0 3 0x4000082 thrsleep syz-fuzzer 75250 279362 20989 0 3 0x4000082 kqread syz-fuzzer 75250 413279 20989 0 3 0x4000082 thrsleep syz-fuzzer 75250 43170 20989 0 3 0x4000082 thrsleep syz-fuzzer 75250 51912 20989 0 3 0x4000082 thrsleep syz-fuzzer 75250 151765 20989 0 3 0x4000082 thrsleep syz-fuzzer 20989 97900 6015 0 3 0x10008a pause ksh 6015 347183 16058 0 3 0x92 select sshd 84271 373293 1 0 3 0x100083 ttyin getty 16058 144 1 0 3 0x80 select sshd 27579 323852 1374 73 3 0x100090 kqread syslogd 1374 247806 1 0 3 0x100082 netio syslogd 30202 73315 1 77 3 0x100090 poll dhclient 60525 416991 1 0 3 0x80 poll dhclient 67166 480680 0 0 3 0x14200 bored smr 70830 57776 0 0 2 0x14200 zerothread 20838 335013 0 0 3 0x14200 aiodoned aiodoned 62187 1843 0 0 3 0x14200 syncer update 95721 377044 0 0 3 0x14200 cleaner cleaner 66085 249923 0 0 3 0x14200 reaper reaper 74335 307777 0 0 3 0x14200 pgdaemon pagedaemon 2909 234440 0 0 3 0x14200 bored crynlk 14381 1572 0 0 3 0x14200 bored crypto 54379 222107 0 0 3 0x40014200 acpi0 acpi0 37491 221354 0 0 3 0x14200 bored softnet 78106 465179 0 0 3 0x14200 bored systqmp 31751 421842 0 0 3 0x14200 bored systq 44361 70531 0 0 3 0x40014200 bored softclock 9312 136579 0 0 3 0x40014200 idle0 1 446460 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 9482 6399K 6591K 78643K 10730 0 pcb 13 8K 8K 78643K 33 0 rtable 100 3K 6K 78643K 258 0 ifaddr 55 12K 13K 78643K 96 0 counters 21 16K 16K 78643K 25 0 ioctlops 0 0K 4K 78643K 33 0 iov 0 0K 12K 78643K 24 0 mount 1 1K 1K 78643K 1 0 vnodes 1220 77K 77K 78643K 1278 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 3 0 VM map 2 0K 0K 78643K 2 0 sem 10 0K 0K 78643K 12 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1809 195K 288K 78643K 12938 0 file desc 6 17K 25K 78643K 136 0 proc 48 38K 54K 78643K 362 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 8 0 in_multi 42 2K 2K 78643K 58 0 ether_multi 1 0K 0K 78643K 3 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 55 254K 254K 78643K 55 0 exec 0 0K 1K 78643K 196 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 125 39K 39K 78643K 1163 0 UVM aobj 6 2K 2K 78643K 6 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 41 0 NDP 8 0K 0K 78643K 17 0 temp 86 3842K 3907K 78643K 2144 0 kqueue 5 8K 12K 78643K 17 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 0 1 0 1 1 0 8 0 rtpcb 80 27 0 25 1 0 1 1 0 8 0 rtentry 112 49 0 8 2 0 2 2 0 8 0 unpcb 120 99 0 89 1 0 1 1 0 8 0 syncache 264 4 0 4 1 1 0 1 0 8 0 tcpqe 32 81 0 81 1 1 0 1 0 8 0 tcpcb 544 62 0 58 1 0 1 1 0 8 0 ipq 40 2 0 2 1 0 1 1 0 8 1 ipqe 40 4 0 4 1 0 1 1 0 8 1 inpcb 280 244 0 237 2 0 2 2 0 8 1 nd6 48 7 0 3 1 0 1 1 0 8 0 pfrktable 1344 14 0 14 1 0 1 1 0 8 1 pftag 88 2 0 2 1 0 1 1 0 8 1 pfrule 1360 4 0 2 1 0 1 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 212 0 40 13 0 13 13 0 8 0 art_table 32 213 0 40 2 0 2 2 0 8 0 art_node 16 48 0 10 1 0 1 1 0 8 0 sysvmsgpl 40 8 0 3 1 0 1 1 0 8 0 semapl 112 8 0 0 1 0 1 1 0 8 0 shmpl 112 4 0 0 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1570 0 171 88 0 88 88 0 8 0 ffsino 240 1570 0 171 83 0 83 83 0 8 0 nchpl 144 1929 0 325 60 0 60 60 0 8 0 uvmvnodes 72 1647 0 0 30 0 30 30 0 8 0 vnodes 208 1647 0 0 87 0 87 87 0 8 0 namei 1024 5216 0 5216 1 0 1 1 0 8 1 vcpupl 1984 2 0 0 1 0 1 1 0 8 0 vmpool 528 2 0 0 1 0 1 1 0 8 0 pfiaddrpl 120 4 0 4 1 0 1 1 0 8 1 scxspl 192 5571 0 5571 1 0 1 1 0 8 1 plimitpl 152 22 0 15 1 0 1 1 0 8 0 sigapl 424 322 0 293 4 0 4 4 0 8 0 futexpl 56 2474 0 2473 1 0 1 1 0 8 0 knotepl 112 81 0 57 1 0 1 1 0 8 0 kqueuepl 144 32 0 26 1 0 1 1 0 8 0 pipelkpl 16 74 0 64 1 0 1 1 0 8 0 pipepl 120 148 0 129 1 0 1 1 0 8 0 fdescpl 432 308 0 293 2 0 2 2 0 8 0 filepl 120 2004 0 1894 4 0 4 4 0 8 0 lockfpl 104 20 0 19 1 0 1 1 0 8 0 lockfspl 48 8 0 7 1 0 1 1 0 8 0 sessionpl 112 17 0 7 1 0 1 1 0 8 0 pgrppl 48 17 0 7 1 0 1 1 0 8 0 ucredpl 96 410 0 403 1 0 1 1 0 8 0 zombiepl 144 293 0 293 1 0 1 1 0 8 1 processpl 920 322 0 293 4 0 4 4 0 8 0 procpl 624 465 0 426 4 0 4 4 0 8 1 sockpl 400 370 0 351 3 0 3 3 0 8 1 mcl64k 65536 12 0 12 1 0 1 1 0 8 1 mcl16k 16384 1 0 1 1 1 0 1 0 8 0 mcl12k 12288 2 0 2 2 1 1 1 0 8 1 mcl9k 9216 3 0 3 1 0 1 1 0 8 1 mcl8k 8192 9 0 9 2 1 1 1 0 8 1 mcl4k 4096 28 0 27 2 1 1 1 0 8 0 mcl2k2 2112 2 0 2 2 1 1 1 0 8 1 mcl2k 2048 75686 0 75636 16 9 7 14 0 8 0 mtagpl 80 14 0 2 2 1 1 1 0 8 0 mbufpl 256 120715 0 120553 20 4 16 16 0 8 0 bufpl 280 3451 0 126 238 0 238 238 0 8 0 anonpl 16 48683 0 32697 79 1 78 78 0 107 13 amapchunkpl 152 1470 0 1333 8 2 6 8 0 158 0 amappl16 192 1724 0 827 55 4 51 55 0 8 6 amappl15 184 1 0 0 1 0 1 1 0 8 0 amappl14 176 25 0 20 1 0 1 1 0 8 0 amappl13 168 36 0 31 1 0 1 1 0 8 0 amappl12 160 10 0 10 1 1 0 1 0 8 0 amappl11 152 43 0 34 1 0 1 1 0 8 0 amappl10 144 118 0 110 1 0 1 1 0 8 0 amappl9 136 361 0 360 1 0 1 1 0 8 0 amappl8 128 327 0 285 2 0 2 2 0 8 0 amappl7 120 155 0 143 1 0 1 1 0 8 0 amappl6 112 23 0 18 1 0 1 1 0 8 0 amappl5 104 264 0 252 1 0 1 1 0 8 0 amappl4 96 424 0 395 1 0 1 1 0 8 0 amappl3 88 107 0 101 1 0 1 1 0 8 0 amappl2 80 1640 0 1566 2 0 2 2 0 8 0 amappl1 72 15167 0 14720 23 14 9 17 0 8 0 amappl 80 693 0 648 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 5 0 0 1 0 1 1 0 8 0 uaddrrnd 24 310 0 293 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 310 0 293 1 0 1 1 0 8 0 vmmpekpl 168 6162 0 6136 2 0 2 2 0 8 0 vmmpepl 168 44010 0 41906 120 18 102 114 0 357 10 vmsppl 272 309 0 293 3 1 2 2 0 8 0 pdppl 4096 626 0 588 6 1 5 6 0 8 0 pvpl 32 153549 0 134019 185 2 183 183 0 265 25 pmappl 200 309 0 293 1 0 1 1 0 8 0 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 251 0 20 7 0 7 7 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace ml_dequeue(ffff8000006b5048) at ml_dequeue+0x28 sys/kern/uipc_mbuf.c:1597 ifq_deq_sleep(ffff800000ac2a78,ffff80001e7bd6f8,10,117,ffffffff823e81ce,ffff800000ac2e04) at ifq_deq_sleep+0x118 sys/net/ifq.c:408 tun_dev_read(5d00,ffff80001e7bd9c8,10) at tun_dev_read+0xd6 sys/net/if_tun.c:778 spec_read(ffff80001e7bd810) at spec_read+0xe9 sys/kern/spec_vnops.c:222 VOP_READ(fffffd805d7d9c30,ffff80001e7bd9c8,10,fffffd806c3bfba0) at VOP_READ+0xbf sys/kern/vfs_vops.c:247 vn_read(fffffd800605a880,ffff80001e7bd9c8,0) at vn_read+0x11f sys/kern/vfs_vnops.c:375 dofilereadv(ffff80001d718600,f0,ffff80001e7bd9c8,0,ffff80001e7bdab0) at dofilereadv+0x1a1 sys/kern/sys_generic.c:237 sys_read(ffff80001d718600,ffff80001e7bda60,ffff80001e7bdab0) at sys_read+0x83 sys/kern/sys_generic.c:157 syscall(ffff80001e7bdb30) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x879d77257a0, count: -10 ddb> machine ddbcpu 1 No such command ddb> trace ml_dequeue(ffff8000006b5048) at ml_dequeue+0x28 sys/kern/uipc_mbuf.c:1597 ifq_deq_sleep(ffff800000ac2a78,ffff80001e7bd6f8,10,117,ffffffff823e81ce,ffff800000ac2e04) at ifq_deq_sleep+0x118 sys/net/ifq.c:408 tun_dev_read(5d00,ffff80001e7bd9c8,10) at tun_dev_read+0xd6 sys/net/if_tun.c:778 spec_read(ffff80001e7bd810) at spec_read+0xe9 sys/kern/spec_vnops.c:222 VOP_READ(fffffd805d7d9c30,ffff80001e7bd9c8,10,fffffd806c3bfba0) at VOP_READ+0xbf sys/kern/vfs_vops.c:247 vn_read(fffffd800605a880,ffff80001e7bd9c8,0) at vn_read+0x11f sys/kern/vfs_vnops.c:375 dofilereadv(ffff80001d718600,f0,ffff80001e7bd9c8,0,ffff80001e7bdab0) at dofilereadv+0x1a1 sys/kern/sys_generic.c:237 sys_read(ffff80001d718600,ffff80001e7bda60,ffff80001e7bdab0) at sys_read+0x83 sys/kern/sys_generic.c:157 syscall(ffff80001e7bdb30) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x879d77257a0, count: -10