uvm_fault(0xffffffff828177b0, 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(0xffffffff828177b0, 0xa, 0, 1) -> e vio_rxeof(ffff80000017a000) at vio_rxeof+0x191 sys/dev/pv/if_vio.c:1018 end trace frame: 0xffff80001d65e970, 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(ffff80001d65ea20,ffff800000655380) at intr_handler+0x4d sys/arch/amd64/amd64/intr.c:537 Xintr_ioapic_edge19_untramp() at Xintr_ioapic_edge19_untramp+0x19f acpicpu_idle() at acpicpu_idle+0x322 sys/dev/acpi/acpicpu.c:1187 sched_idle(ffffffff8273fff0) at sched_idle+0x2ba sys/kern/kern_sched.c:178 end trace frame: 0x0, count: -7 ddb> show registers rdi 0xc rsi 0xc rbp 0xffff80001d65e910 rbx 0xffff80000017a000 rdx 0 rcx 0xffff8000001ab000 rax 0 r8 0x2 r9 0 r10 0 r11 0x81ed7fccd5274cfc r12 0xffff80000002ea00 r13 0xc r14 0xfffffd805caf2100 r15 0 rip 0xffffffff816ac111 vio_rxeof+0x191 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80001d65e880 ss 0x10 vio_rxeof+0x191: movzwl 0xa(%r15),%eax ddb> show proc PROC (idle0) pid=367586 stat=onproc flags process=14000 proc=40000200 pri=0, usrpri=50, nice=20 forw=0x2fe9bccd99ebe798, list=0xffff8000fffffb28,0xffff8000ffffeee0 process=0xffff8000ffffcec0 user=0xffff80001d659000, vmspace=0xffffffff828177b0 estcpu=0, cpticks=3903, pctcpu=0.0 user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 34997 194747 0 0 3 0x14280 nfsidl nfsio 52861 455823 0 0 3 0x14280 nfsidl nfsio 15585 492999 0 0 3 0x14280 nfsidl nfsio 35102 402193 0 0 3 0x14280 nfsidl nfsio 49118 28477 0 0 3 0x14280 nfsidl nfsio 21490 359913 0 0 3 0x14280 nfsidl nfsio 47804 369657 0 0 3 0x14280 nfsidl nfsio 25296 90442 0 0 3 0x14280 nfsidl nfsio 11507 242823 0 0 3 0x14280 nfsidl nfsio 9463 61056 0 0 3 0x14280 nfsidl nfsio 73277 33297 0 0 3 0x14280 nfsidl nfsio 62888 185039 0 0 3 0x14280 nfsidl nfsio 28510 114418 0 0 3 0x14280 nfsidl nfsio 3132 32665 0 0 3 0x14280 nfsidl nfsio 92189 447519 0 0 3 0x14280 nfsidl nfsio 94964 162429 0 0 3 0x14280 nfsidl nfsio 20429 382544 0 0 3 0x14280 nfsidl nfsio 45739 165810 0 0 3 0x14280 nfsidl nfsio 5351 435871 0 0 3 0x14280 nfsidl nfsio 57170 246953 0 0 3 0x14280 nfsidl nfsio 21934 78059 1 0 3 0x100083 ttyin getty 32560 166242 97035 0 3 0x2 biowait syz-executor.0 36805 250474 97035 0 3 0x2 biowait syz-executor.1 97035 106939 24095 0 3 0x82 kqread syz-fuzzer 97035 85797 24095 0 3 0x4000082 nanosleep syz-fuzzer 97035 249628 24095 0 3 0x4000082 thrsleep syz-fuzzer 97035 50630 24095 0 3 0x4000082 thrsleep syz-fuzzer 97035 488673 24095 0 3 0x4000082 thrsleep syz-fuzzer 97035 466420 24095 0 3 0x4000082 thrsleep syz-fuzzer 24095 477457 66919 0 3 0x10008a pause ksh 66919 496805 61497 0 3 0x92 select sshd 61497 9901 1 0 3 0x80 select sshd 68468 310764 3281 73 3 0x100090 kqread syslogd 3281 204497 1 0 3 0x100082 netio syslogd 26341 190177 1 77 3 0x100090 poll dhclient 95589 110264 1 0 3 0x80 poll dhclient 56928 358000 0 0 3 0x14200 bored smr 1050 477480 0 0 3 0x14200 pgzero zerothread 29026 515099 0 0 3 0x14200 aiodoned aiodoned 78361 344491 0 0 3 0x14200 syncer update 22816 331609 0 0 3 0x14200 cleaner cleaner 66661 116013 0 0 3 0x14200 reaper reaper 61091 164043 0 0 3 0x14200 pgdaemon pagedaemon 79300 64452 0 0 3 0x14200 bored crynlk 40226 109638 0 0 3 0x14200 bored crypto 22441 226872 0 0 3 0x40014200 acpi0 acpi0 57836 191428 0 0 3 0x14200 bored softnet 97292 34565 0 0 3 0x14200 bored systqmp 9529 35174 0 0 3 0x14200 bored systq 73176 202730 0 0 3 0x40014200 bored softclock *87768 367586 0 0 7 0x40014200 idle0 1 254725 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 9484 6339K 7237K 78643K 11974 0 pcb 13 8K 8K 78643K 75 0 rtable 122 7K 9K 78643K 409 0 ifaddr 69 14K 16K 78643K 152 0 sysctl 2 0K 0K 78643K 2 0 counters 21 16K 17K 78643K 30 0 ioctlops 0 0K 4K 78643K 81 0 iov 0 0K 16K 78643K 42 0 mount 1 1K 1K 78643K 1 0 vnodes 1221 77K 77K 78643K 1573 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 6 0 VM map 2 0K 0K 78643K 2 0 sem 12 1K 1K 78643K 54 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1809 195K 288K 78643K 12938 0 file desc 4 9K 25K 78643K 374 0 sigio 0 0K 0K 78643K 4 0 proc 49 38K 63K 78643K 381 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 24 0 in_multi 43 2K 3K 78643K 128 0 ether_multi 1 0K 0K 78643K 10 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 43 201K 201K 78643K 43 0 exec 0 0K 1K 78643K 210 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 133 25K 46K 78643K 1710 0 UVM aobj 13 2K 2K 78643K 13 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 50 0 NDP 10 0K 0K 78643K 34 0 temp 95 3856K 3920K 78643K 9160 0 kqueue 3 4K 16K 78643K 20 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 88 39 0 37 1 0 1 1 0 8 0 rtentry 112 71 0 29 2 0 2 2 0 8 0 unpcb 120 275 0 267 1 0 1 1 0 8 0 syncache 272 12 0 12 3 2 1 1 0 8 1 tcpqe 32 150 0 150 2 2 0 1 0 8 0 tcpcb 592 130 0 125 3 1 2 3 0 8 1 ipq 40 3 0 2 1 0 1 1 0 8 0 ipqe 40 6 0 5 1 0 1 1 0 8 0 inpcb 296 422 0 414 2 0 2 2 0 8 1 nd6 48 21 0 16 1 0 1 1 0 8 0 ppxss 1136 1 0 1 1 1 0 1 0 8 0 pfstscr 40 2 0 1 1 0 1 1 0 8 0 pfosfp 40 1 0 0 1 0 1 1 0 8 0 pfosfpen 112 1 0 0 1 0 1 1 0 8 0 pfrktable 1344 38 0 30 2 1 1 2 0 8 0 pftag 88 4 0 4 1 1 0 1 0 8 0 pfstitem 24 2 0 0 1 0 1 1 0 8 0 pfstkey 112 4 0 2 1 0 1 1 0 8 0 pfstate 328 2 0 1 1 0 1 1 0 8 0 pfrule 1360 22 0 12 1 0 1 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 290 0 104 13 0 13 13 0 8 0 art_table 32 291 0 104 2 0 2 2 0 8 0 art_node 16 70 0 31 1 0 1 1 0 8 0 sysvmsgpl 40 2 0 0 1 0 1 1 0 8 0 semupl 112 1 0 1 1 1 0 1 0 8 0 semapl 112 44 0 34 1 0 1 1 0 8 0 shmpl 112 10 0 0 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1893 0 498 88 0 88 88 0 8 0 ffsino 240 1893 0 498 83 0 83 83 0 8 0 nchpl 144 2740 0 1138 60 0 60 60 0 8 0 uvmvnodes 72 2240 0 0 41 0 41 41 0 8 0 vnodes 208 2240 0 0 118 0 118 118 0 8 0 namei 1024 7178 0 7176 1 0 1 1 0 8 0 vmpool 528 1 0 1 1 1 0 1 0 8 0 pfiaddrpl 120 18 0 10 1 0 1 1 0 8 0 scxspl 200 7755 0 7753 1 0 1 1 0 8 0 plimitpl 152 27 0 20 1 0 1 1 0 8 0 sigapl 424 581 0 534 6 0 6 6 0 8 0 futexpl 56 7187 0 7187 1 0 1 1 0 8 1 knotepl 112 80 0 60 1 0 1 1 0 8 0 kqueuepl 152 40 0 38 1 0 1 1 0 8 0 pipepl 272 125 0 114 2 1 1 2 0 8 0 fdescpl 432 547 0 534 2 0 2 2 0 8 0 filepl 120 3346 0 3249 4 0 4 4 0 8 0 lockfpl 104 88 0 87 1 0 1 1 0 8 0 lockfspl 48 35 0 34 1 0 1 1 0 8 0 sessionpl 120 18 0 8 1 0 1 1 0 8 0 pgrppl 48 24 0 14 1 0 1 1 0 8 0 ucredpl 96 190 0 183 1 0 1 1 0 8 0 zombiepl 144 534 0 534 1 0 1 1 0 8 1 processpl 944 581 0 534 7 0 7 7 0 8 0 procpl 632 1003 0 951 6 1 5 6 0 8 0 sockpl 400 738 0 720 4 1 3 4 0 8 1 mcl64k 65536 13 0 13 2 1 1 1 0 8 1 mcl16k 16384 2 0 2 1 1 0 1 0 8 0 mcl12k 12288 10 0 10 2 1 1 1 0 8 1 mcl9k 9216 2 0 2 1 1 0 1 0 8 0 mcl8k 8192 6 0 6 1 0 1 1 0 8 1 mcl4k 4096 29 0 29 2 2 0 1 0 8 0 mcl2k2 2112 1 0 1 1 1 0 1 0 8 0 mcl2k 2048 91159 0 91102 17 9 8 15 0 8 0 mtagpl 96 42 0 4 2 1 1 1 0 8 0 mbufpl 256 146624 0 146344 22 3 19 19 0 8 0 bufpl 280 3972 0 117 276 0 276 276 0 8 0 anonpl 16 60651 0 43032 74 2 72 72 0 107 0 amapchunkpl 152 3470 0 3278 24 6 18 22 0 158 10 amappl16 192 2502 0 1577 47 0 47 47 0 8 0 amappl15 184 2 0 0 1 0 1 1 0 8 0 amappl14 176 170 0 168 1 0 1 1 0 8 0 amappl13 168 26 0 23 1 0 1 1 0 8 0 amappl12 160 22 0 20 1 0 1 1 0 8 0 amappl11 152 213 0 203 1 0 1 1 0 8 0 amappl10 144 14 0 10 1 0 1 1 0 8 0 amappl9 136 359 0 358 1 0 1 1 0 8 0 amappl8 128 303 0 267 2 0 2 2 0 8 0 amappl7 120 111 0 98 1 0 1 1 0 8 0 amappl6 112 30 0 24 1 0 1 1 0 8 0 amappl5 104 308 0 297 1 0 1 1 0 8 0 amappl4 96 601 0 572 1 0 1 1 0 8 0 amappl3 88 305 0 295 1 0 1 1 0 8 0 amappl2 80 3571 0 3513 2 0 2 2 0 8 0 amappl1 72 21136 0 20738 24 15 9 17 0 8 0 amappl 80 1227 0 1173 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 12 0 0 1 0 1 1 0 8 0 uaddrrnd 24 548 0 535 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 548 0 535 1 0 1 1 0 8 0 vmmpekpl 168 7289 0 7263 2 0 2 2 0 8 0 vmmpepl 168 72579 0 70657 122 27 95 114 0 357 6 vmsppl 272 547 0 535 2 1 1 2 0 8 0 pdppl 4096 1102 0 1070 6 1 5 6 0 8 0 pvpl 32 196238 0 175624 175 2 173 173 0 265 4 pmappl 200 547 0 535 1 0 1 1 0 8 0 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 254 0 24 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(ffff80001d65ea20,ffff800000655380) at intr_handler+0x4d sys/arch/amd64/amd64/intr.c:537 Xintr_ioapic_edge19_untramp() at Xintr_ioapic_edge19_untramp+0x19f acpicpu_idle() at acpicpu_idle+0x322 sys/dev/acpi/acpicpu.c:1187 sched_idle(ffffffff8273fff0) at sched_idle+0x2ba sys/kern/kern_sched.c:178 end trace frame: 0x0, count: -7 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(ffff80001d65ea20,ffff800000655380) at intr_handler+0x4d sys/arch/amd64/amd64/intr.c:537 Xintr_ioapic_edge19_untramp() at Xintr_ioapic_edge19_untramp+0x19f acpicpu_idle() at acpicpu_idle+0x322 sys/dev/acpi/acpicpu.c:1187 sched_idle(ffffffff8273fff0) at sched_idle+0x2ba sys/kern/kern_sched.c:178 end trace frame: 0x0, count: -7