login: uvm_fault(0xfffffd806bc0abb0, 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(0xfffffd806bc0abb0, 0xa, 0, 1) -> e vio_rxeof(ffff80000017a000) at vio_rxeof+0x191 sys/dev/pv/if_vio.c:1018 end trace frame: 0xffff80001d793780, 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(ffff80001d793830,ffff800000655380) at intr_handler+0x4d sys/arch/amd64/amd64/intr.c:537 Xintr_ioapic_edge19_untramp() at Xintr_ioapic_edge19_untramp+0x19f end of kernel end trace frame: 0x7f7ffffe6be0, count: -5 ddb> show registers rdi 0xc rsi 0xc rbp 0xffff80001d793720 rbx 0xffff80000017a000 rdx 0 rcx 0xffff8000001ab000 rax 0 r8 0x2 r9 0 r10 0 r11 0x130abcea09330d33 r12 0xffff80000002ea00 r13 0xc r14 0xfffffd8057a8b400 r15 0 rip 0xffffffff818c1ac1 vio_rxeof+0x191 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80001d793690 ss 0 vio_rxeof+0x191: movzwl 0xa(%r15),%eax ddb> show proc PROC (syz-executor.0) pid=231128 stat=onproc flags process=0 proc=0 pri=54, usrpri=54, nice=20 forw=0xffffffffffffffff, list=0xffff80001d6aa388,0xffff80001d6a9018 process=0xffff80001d6c5230 user=0xffff80001d78e000, vmspace=0xfffffd806bc0abb0 estcpu=36, cpticks=2, pctcpu=0.0 user=0, sys=0, intr=1 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND * 8608 231128 21492 0 7 0 syz-executor.0 8608 155372 21492 0 3 0x4000080 fsleep syz-executor.0 21492 181587 34227 0 3 0x82 nanosleep syz-executor.0 98682 83160 34227 0 3 0x2 biowait syz-executor.1 34227 335259 1937 0 3 0x82 kqread syz-fuzzer 34227 249410 1937 0 3 0x4000082 nanosleep syz-fuzzer 34227 105110 1937 0 3 0x4000082 thrsleep syz-fuzzer 34227 69964 1937 0 3 0x4000082 thrsleep syz-fuzzer 34227 367025 1937 0 3 0x4000082 thrsleep syz-fuzzer 34227 185116 1937 0 3 0x4000082 thrsleep syz-fuzzer 34227 430367 1937 0 3 0x4000082 thrsleep syz-fuzzer 1937 439962 72103 0 3 0x10008a pause ksh 72103 276149 35185 0 3 0x92 select sshd 93530 28998 1 0 3 0x100083 ttyin getty 35185 202540 1 0 3 0x80 select sshd 12276 49588 61266 73 3 0x100090 kqread syslogd 61266 352833 1 0 3 0x100082 netio syslogd 10969 121758 1 77 3 0x100090 poll dhclient 40028 21769 1 0 3 0x80 poll dhclient 65908 516592 0 0 3 0x14200 bored smr 80934 110598 0 0 2 0x14200 zerothread 77786 231954 0 0 3 0x14200 aiodoned aiodoned 50845 115193 0 0 3 0x14200 syncer update 94534 274851 0 0 3 0x14200 cleaner cleaner 97611 97712 0 0 3 0x14200 reaper reaper 84427 373905 0 0 3 0x14200 pgdaemon pagedaemon 72734 54685 0 0 3 0x14200 bored crynlk 21217 105293 0 0 3 0x14200 bored crypto 85904 150528 0 0 3 0x40014200 acpi0 acpi0 49329 240998 0 0 3 0x14200 bored softnet 96337 401962 0 0 3 0x14200 bored systqmp 85410 451021 0 0 3 0x14200 bored systq 85385 262190 0 0 3 0x40014200 bored softclock 26723 286565 0 0 3 0x40014200 idle0 1 282905 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 9462 6329K 6648K 78643K 10657 0 pcb 13 8K 8K 78643K 31 0 rtable 112 3K 4K 78643K 227 0 ifaddr 56 13K 13K 78643K 77 0 counters 21 16K 16K 78643K 24 0 ioctlops 0 0K 4K 78643K 33 0 iov 0 0K 12K 78643K 10 0 mount 1 1K 1K 78643K 1 0 vnodes 1220 77K 77K 78643K 1259 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 32 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1809 195K 288K 78643K 12938 0 file desc 5 13K 25K 78643K 119 0 proc 47 38K 54K 78643K 366 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 2 0 in_multi 44 2K 2K 78643K 47 0 ether_multi 1 0K 0K 78643K 2 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 187 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 126 23K 23K 78643K 1100 0 UVM aobj 14 4K 4K 78643K 18 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 4 0 NDP 7 0K 0K 78643K 15 0 temp 71 3848K 3912K 78643K 2997 0 kqueue 3 4K 12K 78643K 93 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 23 0 21 1 0 1 1 0 8 0 rtentry 112 47 0 1 2 0 2 2 0 8 0 unpcb 120 53 0 45 1 0 1 1 0 8 0 syncache 264 4 0 4 1 1 0 1 0 8 0 tcpqe 32 83 0 83 1 1 0 1 0 8 0 tcpcb 544 24 0 20 1 0 1 1 0 8 0 inpcb 296 170 0 163 2 0 2 2 0 8 1 nd6 48 7 0 0 1 0 1 1 0 8 0 pfrktable 1344 3 0 2 1 0 1 1 0 8 0 pftag 88 4 0 4 1 0 1 1 0 8 1 pfrule 1360 6 0 4 1 0 1 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 189 0 0 12 0 12 12 0 8 0 art_table 32 190 0 0 2 0 2 2 0 8 0 art_node 16 46 0 5 1 0 1 1 0 8 0 semupl 112 1 0 1 1 0 1 1 0 8 1 semapl 112 24 0 14 1 0 1 1 0 8 0 shmpl 112 15 0 4 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1539 0 139 88 0 88 88 0 8 0 ffsino 240 1539 0 139 83 0 83 83 0 8 0 nchpl 144 1882 0 277 60 0 60 60 0 8 0 uvmvnodes 72 1604 0 0 30 0 30 30 0 8 0 vnodes 208 1604 0 0 85 0 85 85 0 8 0 namei 1024 4737 0 4736 1 0 1 1 0 8 0 scxspl 192 5320 0 5319 1 0 1 1 0 8 0 plimitpl 152 17 0 10 1 0 1 1 0 8 0 sigapl 424 305 0 277 4 0 4 4 0 8 0 futexpl 56 1758 0 1757 1 0 1 1 0 8 0 knotepl 112 135 0 116 1 0 1 1 0 8 0 kqueuepl 144 70 0 68 1 0 1 1 0 8 0 pipepl 272 84 0 74 1 0 1 1 0 8 0 fdescpl 432 291 0 277 2 0 2 2 0 8 0 filepl 120 1598 0 1501 4 0 4 4 0 8 1 lockfpl 104 18 0 17 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 96 142 0 135 1 0 1 1 0 8 0 zombiepl 144 277 0 277 1 0 1 1 0 8 1 processpl 928 305 0 277 4 0 4 4 0 8 0 procpl 624 412 0 377 4 0 4 4 0 8 1 sockpl 400 246 0 229 3 0 3 3 0 8 1 mcl64k 65536 3 0 3 1 0 1 1 0 8 1 mcl16k 16384 1 0 1 1 0 1 1 0 8 1 mcl12k 12288 3 0 3 1 0 1 1 0 8 1 mcl9k 9216 1 0 1 1 0 1 1 0 8 1 mcl8k 8192 2 0 2 1 0 1 1 0 8 1 mcl4k 4096 12 0 12 2 1 1 1 0 8 1 mcl2k2 2112 2 0 2 1 0 1 1 0 8 1 mcl2k 2048 90971 0 90924 19 5 14 16 0 8 7 mtagpl 96 7 0 2 2 1 1 1 0 8 0 mbufpl 256 144081 0 143974 13 4 9 10 0 8 2 bufpl 280 3432 0 126 237 0 237 237 0 8 0 anonpl 16 44010 0 27473 70 2 68 68 0 107 0 amapchunkpl 152 1264 0 1121 8 0 8 8 0 158 2 amappl16 192 1316 0 405 46 0 46 46 0 8 0 amappl15 184 42 0 40 1 0 1 1 0 8 0 amappl14 176 68 0 61 1 0 1 1 0 8 0 amappl13 168 26 0 23 1 0 1 1 0 8 0 amappl12 160 5 0 3 2 1 1 1 0 8 0 amappl11 152 87 0 76 1 0 1 1 0 8 0 amappl10 144 65 0 55 1 0 1 1 0 8 0 amappl9 136 360 0 358 1 0 1 1 0 8 0 amappl8 128 323 0 283 2 0 2 2 0 8 0 amappl7 120 110 0 97 1 0 1 1 0 8 0 amappl6 112 21 0 18 1 0 1 1 0 8 0 amappl5 104 216 0 205 1 0 1 1 0 8 0 amappl4 96 471 0 439 1 0 1 1 0 8 0 amappl3 88 147 0 140 1 0 1 1 0 8 0 amappl2 80 1542 0 1477 2 0 2 2 0 8 0 amappl1 72 15361 0 14953 24 11 13 17 0 8 4 amappl 80 630 0 588 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 17 0 4 1 0 1 1 0 8 0 uaddrrnd 24 291 0 277 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 291 0 277 1 0 1 1 0 8 0 vmmpekpl 168 6022 0 5995 2 0 2 2 0 8 0 vmmpepl 168 42813 0 40815 120 6 114 114 0 357 26 vmsppl 272 290 0 277 2 0 2 2 0 8 1 pdppl 4096 588 0 554 6 0 6 6 0 8 1 pvpl 32 144808 0 125294 160 0 160 160 0 265 1 pmappl 200 290 0 277 1 0 1 1 0 8 0 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 245 0 12 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(ffff80001d793830,ffff800000655380) at intr_handler+0x4d sys/arch/amd64/amd64/intr.c:537 Xintr_ioapic_edge19_untramp() at Xintr_ioapic_edge19_untramp+0x19f end of kernel end trace frame: 0x7f7ffffe6be0, count: -5 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(ffff80001d793830,ffff800000655380) at intr_handler+0x4d sys/arch/amd64/amd64/intr.c:537 Xintr_ioapic_edge19_untramp() at Xintr_ioapic_edge19_untramp+0x19f end of kernel end trace frame: 0x7f7ffffe6be0, count: -5