uvm_fault(0xfffffd806bc0a110, 0xa, 0, 1) -> e kernel: page fault trap, code=0 Stopped at vio_rxeof+0x191: movzwl 0xa(%r15),%eax ddb> ddb> set $lines = 0 ddb> set $maxwidth = 0 ddb> show panic kernel page fault uvm_fault(0xfffffd806bc0a110, 0xa, 0, 1) -> e vio_rxeof(ffff80000017a000) at vio_rxeof+0x191 sys/dev/pv/if_vio.c:1018 end trace frame: 0xffff80001dd8d880, count: 0 ddb> trace vio_rxeof(ffff80000017a000) at vio_rxeof+0x191 sys/dev/pv/if_vio.c:1018 vio_rx_intr(ffff80000017a050) at vio_rx_intr+0x4d sys/dev/pv/if_vio.c:1056 virtio_check_vqs(ffff80000002ea00) at virtio_check_vqs+0x150 sys/dev/pv/virtio.c:228 intr_handler(ffff80001dd8d930,ffff800000655380) at intr_handler+0x4d sys/arch/amd64/amd64/intr.c:537 Xintr_ioapic_edge19_untramp() at Xintr_ioapic_edge19_untramp+0x19f alltraps() at alltraps+0x138 end of kernel end trace frame: 0x7f7ffffda160, count: -6 ddb> show registers rdi 0xc rsi 0xc rbp 0xffff80001dd8d820 rbx 0xffff80000017a000 rdx 0 rcx 0xffff8000001ab000 rax 0 r8 0x2 r9 0 r10 0 r11 0x4e7163064ee8e9ad r12 0xffff80000002ea00 r13 0xc r14 0xfffffd806963dd00 r15 0 rip 0xffffffff818c1ac1 vio_rxeof+0x191 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80001dd8d790 ss 0 vio_rxeof+0x191: movzwl 0xa(%r15),%eax ddb> show proc PROC (syz-executor.1) pid=259297 stat=onproc flags process=2 proc=0 pri=77, usrpri=77, nice=20 forw=0xffffffffffffffff, list=0xffff80001dd96ec0,0xffff80001dd96030 process=0xffff80001e828030 user=0xffff80001dd88000, vmspace=0xfffffd806bc0a110 estcpu=36, cpticks=0, pctcpu=0.1 user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 15444 402491 94571 0 2 0 syz-executor.0 15444 223183 94571 0 3 0x4000080 wsevent_read syz-executor.0 *85463 259297 87715 0 7 0x2 syz-executor.1 445 160173 0 0 3 0x14200 bored sosplice 55374 312809 0 0 3 0x14280 nfsidl nfsio 51961 195472 0 0 3 0x14280 nfsidl nfsio 42323 114644 0 0 3 0x14280 nfsidl nfsio 78482 37736 0 0 3 0x14280 nfsidl nfsio 37077 351946 0 0 3 0x14280 nfsidl nfsio 55877 345614 0 0 3 0x14280 nfsidl nfsio 26759 194661 0 0 3 0x14280 nfsidl nfsio 59328 519475 0 0 3 0x14280 nfsidl nfsio 50287 503331 0 0 3 0x14280 nfsidl nfsio 76025 73927 0 0 3 0x14280 nfsidl nfsio 73295 116551 0 0 3 0x14280 nfsidl nfsio 17915 445553 0 0 3 0x14280 nfsidl nfsio 79012 317075 0 0 3 0x14280 nfsidl nfsio 84506 418113 0 0 3 0x14280 nfsidl nfsio 48380 12008 0 0 3 0x14280 nfsidl nfsio 71508 153148 0 0 3 0x14280 nfsidl nfsio 7115 361277 0 0 3 0x14280 nfsidl nfsio 3338 345915 0 0 3 0x14280 nfsidl nfsio 23632 359367 0 0 3 0x14280 nfsidl nfsio 94480 430740 0 0 3 0x14280 nfsidl nfsio 94571 190686 87715 0 3 0x82 nanosleep syz-executor.0 87715 58421 523 0 3 0x82 thrsleep syz-fuzzer 87715 49779 523 0 3 0x4000082 nanosleep syz-fuzzer 87715 117668 523 0 3 0x4000082 thrsleep syz-fuzzer 87715 134068 523 0 3 0x4000082 thrsleep syz-fuzzer 87715 309776 523 0 3 0x4000082 thrsleep syz-fuzzer 87715 322976 523 0 3 0x4000082 thrsleep syz-fuzzer 87715 477539 523 0 3 0x4000082 thrsleep syz-fuzzer 87715 456790 523 0 3 0x4000082 kqread syz-fuzzer 523 394196 74830 0 3 0x10008a pause ksh 74830 194425 45889 0 3 0x92 select sshd 93110 429187 1 0 3 0x100083 ttyin getty 45889 336014 1 0 3 0x80 select sshd 49772 195821 33403 73 3 0x100090 kqread syslogd 33403 75006 1 0 3 0x100082 netio syslogd 64153 453334 1 77 3 0x100090 poll dhclient 37377 447802 1 0 3 0x80 poll dhclient 26997 135582 0 0 3 0x14200 bored smr 12309 167513 0 0 2 0x14200 zerothread 53354 338734 0 0 3 0x14200 aiodoned aiodoned 97636 246290 0 0 3 0x14200 syncer update 939 364196 0 0 3 0x14200 cleaner cleaner 50275 211284 0 0 3 0x14200 reaper reaper 80404 360256 0 0 3 0x14200 pgdaemon pagedaemon 26783 198642 0 0 3 0x14200 bored crynlk 37619 219900 0 0 3 0x14200 bored crypto 72040 501569 0 0 3 0x40014200 acpi0 acpi0 90110 26709 0 0 3 0x14200 bored softnet 47689 9909 0 0 3 0x14200 bored systqmp 43572 440910 0 0 3 0x14200 bored systq 61086 260538 0 0 3 0x40014200 bored softclock 73597 454339 0 0 3 0x40014200 idle0 1 27540 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 9515 6483K 6730K 78643K 11320 0 pcb 13 8K 8K 78643K 113 0 rtable 93 14K 15K 78643K 497 0 ifaddr 81 15K 16K 78643K 175 0 sysctl 2 0K 0K 78643K 2 0 counters 21 16K 16K 78643K 25 0 ioctlops 0 0K 4K 78643K 81 0 iov 0 0K 16K 78643K 58 0 mount 1 1K 1K 78643K 1 0 vnodes 1226 77K 77K 78643K 1461 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 9 0 VM map 2 0K 0K 78643K 2 0 sem 12 0K 0K 78643K 94 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1809 195K 288K 78643K 12938 0 file desc 5 13K 25K 78643K 558 0 sigio 0 0K 0K 78643K 8 0 proc 49 38K 63K 78643K 405 0 subproc 32 2K 2K 78643K 51 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 40 0 in_multi 48 2K 2K 78643K 130 0 ether_multi 1 0K 0K 78643K 20 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 229 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 130 39K 55K 78643K 2102 0 UVM aobj 19 6K 6K 78643K 22 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 89 0 NDP 13 0K 0K 78643K 25 0 temp 141 3864K 3928K 78643K 10288 0 kqueue 3 4K 14K 78643K 22 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 10 0 4 1 0 1 1 0 8 0 rtpcb 80 43 0 41 1 0 1 1 0 8 0 rtentry 112 69 0 41 2 0 2 2 0 8 0 unpcb 120 179 0 171 1 0 1 1 0 8 0 syncache 264 4 0 4 1 1 0 1 0 8 0 tcpqe 32 89 0 89 1 1 0 1 0 8 0 tcpcb 544 942 0 938 2 1 1 2 0 8 0 inpcb 296 1539 0 1532 2 1 1 2 0 8 0 nd6 48 12 0 9 1 0 1 1 0 8 0 pkpcb 40 2 0 2 1 1 0 1 0 8 0 pfstscr 40 2 0 2 1 1 0 1 0 8 0 pfrktable 1344 84 0 76 1 0 1 1 0 8 0 pftag 88 19 0 16 1 0 1 1 0 8 0 pfqueue 264 4 0 4 2 2 0 1 0 8 0 pfstkey 112 4 0 4 1 1 0 1 0 8 0 pfstate 328 2 0 2 1 1 0 1 0 8 0 pfrule 1360 18 0 10 1 0 1 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 296 0 167 12 3 9 12 0 8 0 art_table 32 297 0 167 2 0 2 2 0 8 0 art_node 16 68 0 42 1 0 1 1 0 8 0 sysvmsgpl 40 8 0 2 1 0 1 1 0 8 0 semupl 112 1 0 1 1 1 0 1 0 8 0 semapl 112 92 0 82 1 0 1 1 0 8 0 shmpl 112 19 0 3 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 2062 0 664 88 0 88 88 0 8 0 ffsino 240 2062 0 664 83 0 83 83 0 8 0 nchpl 144 3016 0 1425 60 0 60 60 0 8 0 uvmvnodes 72 2297 0 0 42 0 42 42 0 8 0 vnodes 208 2297 0 0 121 0 121 121 0 8 0 namei 1024 7933 0 7933 2 1 1 1 0 8 1 vcpupl 1984 1 0 0 1 0 1 1 0 8 0 vmpool 528 1 0 0 1 0 1 1 0 8 0 pfiaddrpl 120 32 0 24 1 0 1 1 0 8 0 scxspl 192 8604 0 8604 1 1 0 1 0 8 0 plimitpl 152 51 0 44 1 0 1 1 0 8 0 sigapl 424 762 0 713 6 0 6 6 0 8 0 futexpl 56 11835 0 11835 2 1 1 1 0 8 1 knotepl 112 99 0 80 1 0 1 1 0 8 0 kqueuepl 144 60 0 57 1 0 1 1 0 8 0 pipepl 272 155 0 145 2 1 1 2 0 8 0 fdescpl 432 727 0 713 2 0 2 2 0 8 0 filepl 120 4506 0 4409 5 1 4 4 0 8 1 lockfpl 104 83 0 82 1 0 1 1 0 8 0 lockfspl 48 34 0 33 1 0 1 1 0 8 0 sessionpl 112 18 0 8 1 0 1 1 0 8 0 pgrppl 48 20 0 10 1 0 1 1 0 8 0 ucredpl 96 271 0 263 1 0 1 1 0 8 0 zombiepl 144 713 0 713 2 1 1 1 0 8 1 processpl 928 762 0 713 7 0 7 7 0 8 0 procpl 624 1367 0 1310 5 0 5 5 0 8 0 sosppl 128 2 0 2 1 1 0 1 0 8 0 sockpl 400 1765 0 1748 5 3 2 4 0 8 0 mcl64k 65536 21 0 21 1 1 0 1 0 8 0 mcl16k 16384 2 0 2 2 2 0 1 0 8 0 mcl12k 12288 12 0 12 1 1 0 1 0 8 0 mcl9k 9216 6 0 6 1 1 0 1 0 8 0 mcl8k 8192 19 0 19 2 2 0 1 0 8 0 mcl4k 4096 44 0 44 2 2 0 1 0 8 0 mcl2k2 2112 5 0 5 1 1 0 1 0 8 0 mcl2k 2048 95992 0 95941 16 8 8 13 0 8 0 mtagpl 96 63 0 12 3 1 2 2 0 8 0 mbufpl 256 153825 0 153614 17 3 14 15 0 8 0 bufpl 280 4207 0 126 292 0 292 292 0 8 0 anonpl 16 82258 0 65053 86 16 70 84 0 107 0 amapchunkpl 152 3604 0 3477 21 15 6 19 0 158 0 amappl16 192 3470 0 2516 60 12 48 60 0 8 0 amappl15 184 126 0 124 1 0 1 1 0 8 0 amappl14 176 26 0 21 1 0 1 1 0 8 0 amappl13 168 282 0 276 1 0 1 1 0 8 0 amappl12 160 8 0 6 1 0 1 1 0 8 0 amappl11 152 49 0 40 1 0 1 1 0 8 0 amappl10 144 24 0 17 1 0 1 1 0 8 0 amappl9 136 503 0 502 1 0 1 1 0 8 0 amappl8 128 530 0 481 2 0 2 2 0 8 0 amappl7 120 111 0 98 1 0 1 1 0 8 0 amappl6 112 28 0 18 1 0 1 1 0 8 0 amappl5 104 693 0 680 1 0 1 1 0 8 0 amappl4 96 685 0 657 1 0 1 1 0 8 0 amappl3 88 121 0 116 1 0 1 1 0 8 0 amappl2 80 5046 0 4981 2 0 2 2 0 8 0 amappl1 72 25368 0 24953 23 14 9 17 0 8 0 amappl 80 1588 0 1547 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 21 0 3 1 0 1 1 0 8 0 uaddrrnd 24 728 0 713 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 728 0 713 1 0 1 1 0 8 0 vmmpekpl 168 7767 0 7732 2 0 2 2 0 8 0 vmmpepl 168 95160 0 93094 140 45 95 127 0 357 4 vmsppl 272 727 0 713 3 2 1 2 0 8 0 pdppl 4096 1462 0 1427 6 1 5 6 0 8 0 pvpl 32 242289 0 221998 200 33 167 198 0 265 3 pmappl 200 727 0 713 1 0 1 1 0 8 0 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 255 0 32 7 0 7 7 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace vio_rxeof(ffff80000017a000) at vio_rxeof+0x191 sys/dev/pv/if_vio.c:1018 vio_rx_intr(ffff80000017a050) at vio_rx_intr+0x4d sys/dev/pv/if_vio.c:1056 virtio_check_vqs(ffff80000002ea00) at virtio_check_vqs+0x150 sys/dev/pv/virtio.c:228 intr_handler(ffff80001dd8d930,ffff800000655380) at intr_handler+0x4d sys/arch/amd64/amd64/intr.c:537 Xintr_ioapic_edge19_untramp() at Xintr_ioapic_edge19_untramp+0x19f alltraps() at alltraps+0x138 end of kernel end trace frame: 0x7f7ffffda160, count: -6 ddb> machine ddbcpu 1 No such command ddb> trace vio_rxeof(ffff80000017a000) at vio_rxeof+0x191 sys/dev/pv/if_vio.c:1018 vio_rx_intr(ffff80000017a050) at vio_rx_intr+0x4d sys/dev/pv/if_vio.c:1056 virtio_check_vqs(ffff80000002ea00) at virtio_check_vqs+0x150 sys/dev/pv/virtio.c:228 intr_handler(ffff80001dd8d930,ffff800000655380) at intr_handler+0x4d sys/arch/amd64/amd64/intr.c:537 Xintr_ioapic_edge19_untramp() at Xintr_ioapic_edge19_untramp+0x19f alltraps() at alltraps+0x138 end of kernel end trace frame: 0x7f7ffffda160, count: -6