uvm_fault(0xfffffd806412c230, 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(0xfffffd806412c230, 0xa, 0, 1) -> e vio_rxeof(ffff80000017a000) at vio_rxeof+0x191 sys/dev/pv/if_vio.c:1018 end trace frame: 0xffff80001e7e0c90, 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(ffff80001e7e0d40,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_enter(fffffd8066580580,931010c7000,5851b000,3,22) at pmap_enter+0xa15 pmap_unmap_ptes sys/arch/amd64/amd64/pmap.c:431 [inline] pmap_enter(fffffd8066580580,931010c7000,5851b000,3,22) at pmap_enter+0xa15 sys/arch/amd64/amd64/pmap.c:2841 uvm_fault(fffffd806412c230,931010c7000,1,2) at uvm_fault+0x1249 sys/uvm/uvm_fault.c:939 pageflttrap(ffff80001e7e1280,1) at pageflttrap+0x156 sys/arch/amd64/amd64/trap.c:221 usertrap(ffff80001e7e1280) at usertrap+0x1fb sys/arch/amd64/amd64/trap.c:384 recall_trap() at recall_trap+0x8 end of kernel end trace frame: 0x7f7fffff9b10, count: -11 ddb> show registers rdi 0xc rsi 0xc rbp 0xffff80001e7e0c30 rbx 0xffff80000017a000 rdx 0 rcx 0xffff8000001ab000 rax 0 r8 0x2 r9 0x5 r10 0xffff80001e7e0df0 r11 0xc43cf53aa3703172 r12 0xffff80000002ea00 r13 0xc r14 0xfffffd805f74f200 r15 0 rip 0xffffffff821f3f21 vio_rxeof+0x191 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80001e7e0ba0 ss 0 vio_rxeof+0x191: movzwl 0xa(%r15),%eax ddb> show proc PROC (syz-executor.1) pid=39747 stat=onproc flags process=2 proc=0 pri=80, usrpri=80, nice=20 forw=0xffffffffffffffff, list=0xffff80001d6a99c8,0xffff800020a17628 process=0xffff800020a30770 user=0xffff80001e7dc000, vmspace=0xfffffd806412c230 estcpu=36, cpticks=0, pctcpu=0.0 user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 78178 112082 76524 0 2 0 syz-executor.0 65188 409339 0 0 3 0x14280 nfsidl nfsio 98459 232174 0 0 3 0x14280 nfsidl nfsio 49640 404882 0 0 3 0x14280 nfsidl nfsio 2715 463909 0 0 3 0x14280 nfsidl nfsio 91321 143179 0 0 3 0x14280 nfsidl nfsio 6751 351169 0 0 3 0x14280 nfsidl nfsio 20094 28899 0 0 3 0x14280 nfsidl nfsio 98242 217253 0 0 3 0x14280 nfsidl nfsio 11134 161413 0 0 3 0x14280 nfsidl nfsio 83463 369199 0 0 3 0x14280 nfsidl nfsio 84939 279398 0 0 3 0x14280 nfsidl nfsio 49611 404059 0 0 3 0x14280 nfsidl nfsio 85578 436293 0 0 3 0x14280 nfsidl nfsio 30519 514780 0 0 3 0x14280 nfsidl nfsio 67727 482085 0 0 3 0x14280 nfsidl nfsio 78695 506646 0 0 3 0x14280 nfsidl nfsio 28898 355740 0 0 3 0x14280 nfsidl nfsio 51081 490139 0 0 3 0x14280 nfsidl nfsio 91814 165761 0 0 3 0x14280 nfsidl nfsio 89351 123522 0 0 3 0x14280 nfsidl nfsio 76524 522229 27137 0 3 0x82 nanosleep syz-executor.0 *11777 39747 27137 0 7 0x2 syz-executor.1 21535 243730 0 0 3 0x14200 acct acct 78555 42833 0 0 3 0x14200 bored sosplice 27137 497012 48500 0 3 0x82 thrsleep syz-fuzzer 27137 134320 48500 0 3 0x4000082 nanosleep syz-fuzzer 27137 200560 48500 0 3 0x4000082 kqread syz-fuzzer 27137 221222 48500 0 3 0x4000082 thrsleep syz-fuzzer 27137 200220 48500 0 3 0x4000082 thrsleep syz-fuzzer 27137 239098 48500 0 3 0x4000082 thrsleep syz-fuzzer 27137 432452 48500 0 3 0x4000082 thrsleep syz-fuzzer 27137 402261 48500 0 3 0x4000082 thrsleep syz-fuzzer 48500 501300 42653 0 3 0x10008a pause ksh 42653 360340 97573 0 3 0x92 select sshd 53271 290656 1 0 3 0x100083 ttyin getty 97573 193421 1 0 3 0x80 select sshd 21678 313636 31045 73 3 0x100090 kqread syslogd 31045 27260 1 0 3 0x100082 netio syslogd 10283 486619 1 77 3 0x100090 poll dhclient 57733 189087 1 0 3 0x80 poll dhclient 50883 174779 0 0 3 0x14200 bored smr 3689 312224 0 0 3 0x14200 pgzero zerothread 94566 135368 0 0 3 0x14200 aiodoned aiodoned 26493 125165 0 0 3 0x14200 syncer update 14221 211140 0 0 3 0x14200 cleaner cleaner 66881 223457 0 0 3 0x14200 reaper reaper 96457 428845 0 0 3 0x14200 pgdaemon pagedaemon 11196 399832 0 0 3 0x14200 bored crynlk 67615 73069 0 0 3 0x14200 bored crypto 93544 401742 0 0 3 0x40014200 acpi0 acpi0 91917 175377 0 0 3 0x14200 bored softnet 1073 503942 0 0 3 0x14200 bored systqmp 46146 1254 0 0 3 0x14200 bored systq 90412 273846 0 0 3 0x40014200 bored softclock 70194 489469 0 0 3 0x40014200 idle0 1 255564 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 9529 6628K 6970K 78643K 12767 0 pcb 13 8K 8K 78643K 187 0 rtable 130 7K 10K 78643K 951 0 ifaddr 87 17K 18K 78643K 407 0 sysctl 2 0K 0K 78643K 2 0 counters 21 16K 17K 78643K 59 0 ioctlops 0 0K 4K 78643K 191 0 iov 0 0K 16K 78643K 1139 0 mount 1 1K 1K 78643K 1 0 vnodes 1216 76K 77K 78643K 1890 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 30 0 VM map 2 0K 0K 78643K 2 0 sem 12 0K 0K 78643K 259 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1809 195K 288K 78643K 12938 0 file desc 5 13K 25K 78643K 1498 0 sigio 0 0K 0K 78643K 8 0 proc 52 38K 55K 78643K 597 0 subproc 32 2K 2K 78643K 102 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 106 0 in_multi 75 4K 4K 78643K 345 0 ether_multi 1 0K 0K 78643K 41 0 mrt 0 0K 0K 78643K 12 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 323 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 174 203K 203K 78643K 4534 0 UVM aobj 73 3K 3K 78643K 84 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 188 0 NDP 13 0K 0K 78643K 84 0 temp 139 3864K 3928K 78643K 20769 0 kqueue 4 6K 28K 78643K 609 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 19 0 11 1 0 1 1 0 8 0 rtpcb 80 74 0 72 1 0 1 1 0 8 0 rtentry 112 152 0 106 2 0 2 2 0 8 0 unpcb 120 430 0 422 1 0 1 1 0 8 0 syncache 264 17 0 17 6 5 1 1 0 8 1 tcpqe 32 398 0 398 3 2 1 1 0 8 1 tcpcb 544 425 0 421 2 1 1 2 0 8 0 ipq 40 2 0 2 1 1 0 1 0 8 0 ipqe 40 4 0 4 1 1 0 1 0 8 0 inpcb 296 1449 0 1440 10 8 2 2 0 8 1 rttmr 72 3 0 3 2 2 0 1 0 8 0 nd6 48 54 0 47 1 0 1 1 0 8 0 pkpcb 40 14 0 14 3 3 0 1 0 8 0 ppxss 1136 6 0 6 5 4 1 1 0 8 1 pfstscr 40 6 0 5 2 1 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 pfrke_plain 160 2 0 0 1 0 1 1 0 8 0 pfrktable 1344 98 0 91 3 1 2 2 0 8 1 pftag 88 21 0 16 1 0 1 1 0 8 0 pfqueue 264 2 0 2 1 1 0 1 0 8 0 pfstitem 24 4 0 0 1 0 1 1 0 8 0 pfstkey 112 14 0 10 1 0 1 1 0 8 0 pfstate 328 7 0 5 1 0 1 1 0 8 0 pfrule 1360 50 0 30 2 0 2 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 665 0 421 24 8 16 16 0 8 0 art_table 32 666 0 421 2 0 2 2 0 8 0 art_node 16 149 0 108 1 0 1 1 0 8 0 sysvmsgpl 40 39 0 20 1 0 1 1 0 8 0 semupl 112 1 0 1 1 1 0 1 0 8 0 semapl 112 255 0 245 1 0 1 1 0 8 0 shmpl 112 81 0 12 2 0 2 2 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 3223 0 1826 88 0 88 88 0 8 0 ffsino 240 3223 0 1826 83 0 83 83 0 8 0 nchpl 144 6108 0 4529 60 0 60 60 0 8 0 rtmask 32 4 0 2 1 0 1 1 0 8 0 uvmvnodes 72 3804 0 0 70 0 70 70 0 8 0 vnodes 208 3804 0 0 201 0 201 201 0 8 0 namei 1024 17187 0 17187 4 3 1 1 0 8 1 vcpupl 1984 22 0 0 3 0 3 3 0 8 0 vmpool 528 28 0 6 2 0 2 2 0 8 0 pfiaddrpl 120 34 0 30 1 0 1 1 0 8 0 scxspl 192 20240 0 20240 2 1 1 1 0 8 1 plimitpl 152 108 0 101 1 0 1 1 0 8 0 sigapl 424 1714 0 1664 6 0 6 6 0 8 0 futexpl 56 29176 0 29176 5 4 1 1 0 8 1 knotepl 112 728 0 709 1 0 1 1 0 8 0 kqueuepl 144 963 0 958 1 0 1 1 0 8 0 pipepl 272 244 0 234 3 1 2 2 0 8 1 fdescpl 432 1658 0 1644 2 0 2 2 0 8 0 filepl 120 10368 0 10272 6 2 4 4 0 8 1 lockfpl 104 278 0 277 1 0 1 1 0 8 0 lockfspl 48 97 0 96 1 0 1 1 0 8 0 sessionpl 112 21 0 11 1 0 1 1 0 8 0 pgrppl 48 27 0 17 1 0 1 1 0 8 0 ucredpl 96 925 0 918 1 0 1 1 0 8 0 zombiepl 144 1664 0 1664 2 1 1 1 0 8 1 processpl 928 1714 0 1664 7 0 7 7 0 8 0 procpl 624 3605 0 3548 6 1 5 5 0 8 0 sosppl 128 13 0 13 4 4 0 1 0 8 0 sockpl 400 1970 0 1953 9 5 4 4 0 8 2 mcl64k 65536 48 0 48 6 5 1 1 0 8 1 mcl16k 16384 4 0 4 4 3 1 1 0 8 1 mcl12k 12288 29 0 29 7 6 1 1 0 8 1 mcl9k 9216 16 0 16 8 7 1 1 0 8 1 mcl8k 8192 35 0 35 9 8 1 1 0 8 1 mcl4k 4096 122 0 120 7 6 1 1 0 8 0 mcl2k2 2112 11 0 11 6 5 1 1 0 8 1 mcl2k 2048 96348 0 96285 27 18 9 18 0 8 0 mtagpl 96 260 0 207 6 4 2 2 0 8 0 mbufpl 256 161660 0 161389 40 22 18 23 0 8 0 bufpl 280 7246 0 1894 383 0 383 383 0 8 0 anonpl 16 191762 0 174018 130 50 80 89 0 107 0 amapchunkpl 152 8579 0 8446 35 28 7 20 0 158 0 amappl16 192 8681 0 7585 100 44 56 67 0 8 0 amappl15 184 2 0 0 1 0 1 1 0 8 0 amappl14 176 417 0 408 1 0 1 1 0 8 0 amappl13 168 56 0 52 1 0 1 1 0 8 0 amappl12 160 20 0 19 1 0 1 1 0 8 0 amappl11 152 472 0 462 1 0 1 1 0 8 0 amappl10 144 19 0 14 1 0 1 1 0 8 0 amappl9 136 922 0 920 1 0 1 1 0 8 0 amappl8 128 463 0 406 2 0 2 2 0 8 0 amappl7 120 142 0 127 1 0 1 1 0 8 0 amappl6 112 235 0 229 1 0 1 1 0 8 0 amappl5 104 1392 0 1381 1 0 1 1 0 8 0 amappl4 96 692 0 662 1 0 1 1 0 8 0 amappl3 88 533 0 526 1 0 1 1 0 8 0 amappl2 80 12186 0 12123 2 0 2 2 0 8 0 amappl1 72 49147 0 48742 22 13 9 17 0 8 0 amappl 80 3877 0 3822 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 83 0 11 2 0 2 2 0 8 0 uaddrrnd 24 1686 0 1650 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1686 0 1650 1 0 1 1 0 8 0 vmmpekpl 168 12709 0 12667 3 1 2 3 0 8 0 vmmpepl 168 211858 0 209559 227 119 108 141 0 357 3 vmsppl 272 1685 0 1650 4 1 3 3 0 8 0 pdppl 4096 3378 0 3322 9 1 8 8 0 8 0 pvpl 32 538478 0 518691 354 144 210 304 0 265 32 pmappl 200 1685 0 1650 2 0 2 2 0 8 0 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 333 0 85 8 0 8 8 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(ffff80001e7e0d40,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_enter(fffffd8066580580,931010c7000,5851b000,3,22) at pmap_enter+0xa15 pmap_unmap_ptes sys/arch/amd64/amd64/pmap.c:431 [inline] pmap_enter(fffffd8066580580,931010c7000,5851b000,3,22) at pmap_enter+0xa15 sys/arch/amd64/amd64/pmap.c:2841 uvm_fault(fffffd806412c230,931010c7000,1,2) at uvm_fault+0x1249 sys/uvm/uvm_fault.c:939 pageflttrap(ffff80001e7e1280,1) at pageflttrap+0x156 sys/arch/amd64/amd64/trap.c:221 usertrap(ffff80001e7e1280) at usertrap+0x1fb sys/arch/amd64/amd64/trap.c:384 recall_trap() at recall_trap+0x8 end of kernel end trace frame: 0x7f7fffff9b10, 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(ffff80001e7e0d40,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_enter(fffffd8066580580,931010c7000,5851b000,3,22) at pmap_enter+0xa15 pmap_unmap_ptes sys/arch/amd64/amd64/pmap.c:431 [inline] pmap_enter(fffffd8066580580,931010c7000,5851b000,3,22) at pmap_enter+0xa15 sys/arch/amd64/amd64/pmap.c:2841 uvm_fault(fffffd806412c230,931010c7000,1,2) at uvm_fault+0x1249 sys/uvm/uvm_fault.c:939 pageflttrap(ffff80001e7e1280,1) at pageflttrap+0x156 sys/arch/amd64/amd64/trap.c:221 usertrap(ffff80001e7e1280) at usertrap+0x1fb sys/arch/amd64/amd64/trap.c:384 recall_trap() at recall_trap+0x8 end of kernel end trace frame: 0x7f7fffff9b10, count: -11