uvm_fault(0xffffffff82853498, 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(0xffffffff82853498, 0xa, 0, 1) -> e vio_rxeof(ffff80000017a000) at vio_rxeof+0x191 sys/dev/pv/if_vio.c:1018 end trace frame: 0xffff80001d696440, 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(ffff80001d6964f0,ffff800000655380) at intr_handler+0x4d sys/arch/amd64/amd64/intr.c:537 Xintr_ioapic_edge19_untramp() at Xintr_ioapic_edge19_untramp+0x19f Xspllower() at Xspllower+0x19 pmap_do_remove(fffffd806bc08a28,1c359860000,1c359861000,0) at pmap_do_remove+0x96f sys/arch/amd64/amd64/pmap.c:1757 uvm_map_teardown(fffffd806bc09000) at uvm_map_teardown+0x165 uvm_map_addr_RBT_LEFT sys/uvm/uvm_map.h:176 [inline] uvm_map_teardown(fffffd806bc09000) at uvm_map_teardown+0x165 sys/uvm/uvm_map.c:2739 uvmspace_free(fffffd806bc09000) at uvmspace_free+0x86 sys/uvm/uvm_map.c:3646 uvm_exit(ffff80001d6c4af0) at uvm_exit+0x29 sys/uvm/uvm_glue.c:297 reaper(ffff80001d652110) at reaper+0x15c sys/kern/kern_exit.c:456 end trace frame: 0x0, count: -11 ddb> show registers rdi 0xc rsi 0xc rbp 0xffff80001d6963e0 rbx 0xffff80000017a000 rdx 0 rcx 0xffff8000001ab000 rax 0 r8 0x2 r9 0xffff80001d696648 r10 0xffff80001d6965a0 r11 0x4b5caf3fb0c1d8dc r12 0xffff80000002ea00 r13 0xc r14 0xfffffd805c718d00 r15 0 rip 0xffffffff81b68bf1 vio_rxeof+0x191 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80001d696350 ss 0x10 vio_rxeof+0x191: movzwl 0xa(%r15),%eax ddb> show proc PROC (reaper) pid=274687 stat=onproc flags process=14000 proc=200 pri=4, usrpri=50, nice=20 forw=0xffffffffffffffff, list=0xffff80001d6519c0,0xffff80001d652600 process=0xffff8000ffffcae8 user=0xffff80001d691000, vmspace=0xffffffff82853498 estcpu=0, cpticks=1, pctcpu=0.0 user=0, sys=0, intr=1 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 37729 223917 0 0 3 0x14200 bored sosplice 27049 461498 71910 0 3 0x82 nanosleep syz-executor.0 32255 436678 71910 0 3 0x2 biowait syz-executor.1 71910 429864 19 0 3 0x82 thrsleep syz-fuzzer 71910 311586 19 0 3 0x4000082 nanosleep syz-fuzzer 71910 110923 19 0 3 0x4000082 thrsleep syz-fuzzer 71910 225151 19 0 3 0x4000082 thrsleep syz-fuzzer 71910 519946 19 0 3 0x4000082 thrsleep syz-fuzzer 71910 456300 19 0 3 0x4000082 kqread syz-fuzzer 71910 268597 19 0 3 0x4000082 thrsleep syz-fuzzer 19 262848 69504 0 3 0x10008a pause ksh 69504 253326 40848 0 3 0x92 select sshd 86003 388583 1 0 3 0x100083 ttyin getty 40848 131398 1 0 3 0x80 select sshd 77813 493214 47641 73 3 0x100010 ffs_fsync syslogd 47641 468766 1 0 3 0x100082 netio syslogd 77645 389101 0 0 3 0x14200 bored smr 88035 113856 0 0 2 0x14200 zerothread 23206 13854 0 0 3 0x14200 aiodoned aiodoned 94676 431247 0 0 3 0x14200 syncer update 34273 114096 0 0 3 0x14200 cleaner cleaner *70301 274687 0 0 7 0x14200 reaper 45042 151740 0 0 3 0x14200 pgdaemon pagedaemon 6101 521872 0 0 3 0x14200 bored crynlk 40583 393952 0 0 3 0x14200 bored crypto 30184 358385 0 0 3 0x40014200 acpi0 acpi0 41436 30530 0 0 3 0x14200 bored softnet 15845 301501 0 0 3 0x14200 bored systqmp 72842 463495 0 0 3 0x14200 bored systq 70828 449239 0 0 3 0x40014200 bored softclock 81516 466997 0 0 3 0x40014200 idle0 1 163294 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 9464 6267K 6845K 78643K 10947 0 pcb 13 8K 8K 78643K 55 0 rtable 120 4K 8K 78643K 306 0 ifaddr 56 12K 13K 78643K 94 0 sysctl 2 0K 0K 78643K 2 0 counters 21 16K 17K 78643K 25 0 ioctlops 0 0K 4K 78643K 51 0 iov 0 0K 16K 78643K 22 0 mount 1 1K 1K 78643K 1 0 vnodes 1227 77K 77K 78643K 1335 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 52 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1809 195K 288K 78643K 12938 0 file desc 4 9K 25K 78643K 321 0 sigio 0 0K 0K 78643K 2 0 proc 44 30K 54K 78643K 372 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 14 0 in_multi 44 2K 2K 78643K 78 0 ether_multi 1 0K 0K 78643K 7 0 mrt 0 0K 0K 78643K 4 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 49 228K 228K 78643K 49 0 exec 0 0K 1K 78643K 207 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 113 22K 26K 78643K 1565 0 UVM aobj 14 2K 2K 78643K 21 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 36 0 NDP 8 0K 0K 78643K 20 0 temp 79 3854K 3922K 78643K 4242 0 kqueue 3 4K 6K 78643K 5 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 35 0 35 1 0 1 1 0 8 1 rtentry 112 58 0 9 2 0 2 2 0 8 0 unpcb 120 117 0 111 1 0 1 1 0 8 0 syncache 264 6 0 6 2 2 0 1 0 8 0 tcpqe 32 635 0 635 2 2 0 1 0 8 0 tcpcb 544 422 0 413 2 0 2 2 0 8 1 ipq 40 1 0 0 1 0 1 1 0 8 0 ipqe 40 2 0 1 1 0 1 1 0 8 0 inpcb 296 568 0 563 2 0 2 2 0 8 1 rttmr 72 2 0 2 1 1 0 1 0 8 0 nd6 48 15 0 5 1 0 1 1 0 8 0 swfcl 56 2 0 0 1 0 1 1 0 8 0 pfrktable 1344 25 0 23 1 0 1 1 0 8 0 pftag 88 4 0 4 1 0 1 1 0 8 1 pfrule 1360 10 0 8 1 0 1 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 243 0 0 16 0 16 16 0 8 0 art_table 32 244 0 0 2 0 2 2 0 8 0 art_node 16 57 0 13 1 0 1 1 0 8 0 sysvmsgpl 40 2 0 2 1 1 0 1 0 8 0 semupl 112 2 0 2 1 1 0 1 0 8 0 semapl 112 50 0 40 1 0 1 1 0 8 0 shmpl 112 18 0 7 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1763 0 365 88 0 88 88 0 8 0 ffsino 240 1763 0 365 83 0 83 83 0 8 0 nchpl 144 2344 0 742 60 0 60 60 0 8 0 uvmvnodes 72 1896 0 0 35 0 35 35 0 8 0 vnodes 208 1896 0 0 100 0 100 100 0 8 0 namei 1024 6070 0 6069 2 1 1 1 0 8 0 vmpool 528 6 0 6 1 1 0 1 0 8 0 pfiaddrpl 120 8 0 6 1 0 1 1 0 8 0 scxspl 192 6888 0 6886 1 0 1 1 0 8 0 plimitpl 152 36 0 30 1 0 1 1 0 8 0 sigapl 424 508 0 482 4 0 4 4 0 8 0 futexpl 56 5185 0 5185 1 0 1 1 0 8 1 knotepl 112 65 0 46 1 0 1 1 0 8 0 kqueuepl 144 30 0 28 1 0 1 1 0 8 0 pipepl 272 98 0 88 1 0 1 1 0 8 0 fdescpl 432 493 0 482 2 0 2 2 0 8 0 filepl 120 2558 0 2474 4 0 4 4 0 8 1 lockfpl 104 49 0 49 1 0 1 1 0 8 1 lockfspl 48 19 0 19 1 0 1 1 0 8 1 sessionpl 112 17 0 9 1 0 1 1 0 8 0 pgrppl 48 23 0 15 1 0 1 1 0 8 0 ucredpl 96 197 0 191 1 0 1 1 0 8 0 zombiepl 144 482 0 481 2 1 1 1 0 8 0 processpl 928 508 0 481 4 0 4 4 0 8 0 procpl 624 822 0 789 4 0 4 4 0 8 0 sosppl 128 6 0 6 2 2 0 1 0 8 0 sockpl 400 720 0 709 5 1 4 4 0 8 2 mcl64k 65536 14 0 14 1 0 1 1 0 8 1 mcl16k 16384 1 0 1 1 1 0 1 0 8 0 mcl12k 12288 3 0 3 1 0 1 1 0 8 1 mcl9k 9216 2 0 2 2 2 0 1 0 8 0 mcl8k 8192 2 0 2 2 1 1 1 0 8 1 mcl4k 4096 25 0 25 2 1 1 1 0 8 1 mcl2k2 2112 1 0 1 1 1 0 1 0 8 0 mcl2k 2048 94784 0 94720 46 37 9 29 0 8 0 mtagpl 96 45 0 4 2 1 1 1 0 8 0 mbufpl 256 150982 0 150767 24 8 16 16 0 8 0 bufpl 280 3682 0 125 255 0 255 255 0 8 0 anonpl 16 66275 0 49864 84 5 79 79 0 107 0 amapchunkpl 152 2644 0 2508 21 11 10 19 0 158 2 amappl16 192 2374 0 1304 59 5 54 54 0 8 0 amappl15 184 129 0 127 1 0 1 1 0 8 0 amappl14 176 35 0 29 1 0 1 1 0 8 0 amappl13 168 26 0 23 1 0 1 1 0 8 0 amappl12 160 14 0 11 1 0 1 1 0 8 0 amappl11 152 48 0 44 1 0 1 1 0 8 0 amappl10 144 162 0 156 1 0 1 1 0 8 0 amappl9 136 507 0 504 1 0 1 1 0 8 0 amappl8 128 455 0 413 2 0 2 2 0 8 0 amappl7 120 255 0 240 1 0 1 1 0 8 0 amappl6 112 26 0 20 1 0 1 1 0 8 0 amappl5 104 404 0 396 1 0 1 1 0 8 0 amappl4 96 415 0 394 1 0 1 1 0 8 0 amappl3 88 108 0 102 1 0 1 1 0 8 0 amappl2 80 2796 0 2739 2 0 2 2 0 8 0 amappl1 72 19406 0 18998 24 15 9 17 0 8 0 amappl 80 1094 0 1053 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 20 0 7 1 0 1 1 0 8 0 uaddrrnd 24 499 0 488 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 499 0 488 1 0 1 1 0 8 0 vmmpekpl 168 6798 0 6772 2 0 2 2 0 8 0 vmmpepl 168 65565 0 63450 161 32 129 150 0 357 37 vmsppl 272 498 0 487 3 2 1 2 0 8 0 pdppl 4096 1004 0 974 6 1 5 6 0 8 1 pvpl 32 192452 0 172659 195 13 182 194 0 265 0 pmappl 200 498 0 487 1 0 1 1 0 8 0 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 293 0 55 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(ffff80001d6964f0,ffff800000655380) at intr_handler+0x4d sys/arch/amd64/amd64/intr.c:537 Xintr_ioapic_edge19_untramp() at Xintr_ioapic_edge19_untramp+0x19f Xspllower() at Xspllower+0x19 pmap_do_remove(fffffd806bc08a28,1c359860000,1c359861000,0) at pmap_do_remove+0x96f sys/arch/amd64/amd64/pmap.c:1757 uvm_map_teardown(fffffd806bc09000) at uvm_map_teardown+0x165 uvm_map_addr_RBT_LEFT sys/uvm/uvm_map.h:176 [inline] uvm_map_teardown(fffffd806bc09000) at uvm_map_teardown+0x165 sys/uvm/uvm_map.c:2739 uvmspace_free(fffffd806bc09000) at uvmspace_free+0x86 sys/uvm/uvm_map.c:3646 uvm_exit(ffff80001d6c4af0) at uvm_exit+0x29 sys/uvm/uvm_glue.c:297 reaper(ffff80001d652110) at reaper+0x15c sys/kern/kern_exit.c:456 end trace frame: 0x0, count: -11 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(ffff80001d6964f0,ffff800000655380) at intr_handler+0x4d sys/arch/amd64/amd64/intr.c:537 Xintr_ioapic_edge19_untramp() at Xintr_ioapic_edge19_untramp+0x19f Xspllower() at Xspllower+0x19 pmap_do_remove(fffffd806bc08a28,1c359860000,1c359861000,0) at pmap_do_remove+0x96f sys/arch/amd64/amd64/pmap.c:1757 uvm_map_teardown(fffffd806bc09000) at uvm_map_teardown+0x165 uvm_map_addr_RBT_LEFT sys/uvm/uvm_map.h:176 [inline] uvm_map_teardown(fffffd806bc09000) at uvm_map_teardown+0x165 sys/uvm/uvm_map.c:2739 uvmspace_free(fffffd806bc09000) at uvmspace_free+0x86 sys/uvm/uvm_map.c:3646 uvm_exit(ffff80001d6c4af0) at uvm_exit+0x29 sys/uvm/uvm_glue.c:297 reaper(ffff80001d652110) at reaper+0x15c sys/kern/kern_exit.c:456 end trace frame: 0x0, count: -11