uvm_fault(0xffffffff828663b8, 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(0xffffffff828663b8, 0xa, 0, 1) -> e vio_rxeof(ffff80000017a000) at vio_rxeof+0x191 sys/dev/pv/if_vio.c:1018 end trace frame: 0xffff80001d696050, 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(ffff80001d696100,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 softintr_dispatch(0) at softintr_dispatch+0xda sys/arch/amd64/amd64/softintr.c:102 Xsoftclock() at Xsoftclock+0x1f Xspllower() at Xspllower+0x19 printf(ffffffff823c6d5a) at printf+0x83 sys/kern/subr_prf.c:509 uvm_fault_unwire_locked(fffffd8057746668,9cae7ee000,9cae7ef000) at uvm_fault_unwire_locked+0x1f1 sys/uvm/uvm_fault.c:1364 uvm_unmap_kill_entry(fffffd8057746668,fffffd805724ca50) at uvm_unmap_kill_entry+0x5d sys/uvm/uvm_map.c:2106 uvm_map_teardown(fffffd8057746668) at uvm_map_teardown+0x165 uvm_map_addr_RBT_LEFT sys/uvm/uvm_map.h:176 [inline] uvm_map_teardown(fffffd8057746668) at uvm_map_teardown+0x165 sys/uvm/uvm_map.c:2739 uvmspace_free(fffffd8057746668) at uvmspace_free+0x86 sys/uvm/uvm_map.c:3646 uvm_exit(ffff80001d7075d8) at uvm_exit+0x29 sys/uvm/uvm_glue.c:297 reaper(ffff80001d6519c0) at reaper+0x15c sys/kern/kern_exit.c:456 end trace frame: 0x0, count: -16 ddb> show registers rdi 0xc rsi 0xc rbp 0xffff80001d695ff0 rbx 0xffff80000017a000 rdx 0 rcx 0xffff8000001ab000 rax 0 r8 0x2 r9 0x1 r10 0xd172f7c152e0ff1f r11 0xf83645aa23410a41 r12 0xffff80000002ea00 r13 0xc r14 0xfffffd80533c2500 r15 0 rip 0xffffffff821f3f21 vio_rxeof+0x191 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80001d695f60 ss 0x10 vio_rxeof+0x191: movzwl 0xa(%r15),%eax ddb> show proc PROC (reaper) pid=340969 stat=onproc flags process=14000 proc=200 pri=86, usrpri=86, nice=20 forw=0xffffffffffffffff, list=0xffff80001d651750,0xffff80001d651c40 process=0xffff8000ffffc008 user=0xffff80001d691000, vmspace=0xffffffff828663b8 estcpu=36, cpticks=95, pctcpu=18.30 user=0, sys=1, intr=1 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 89781 115313 0 0 3 0x14200 acct acct 44229 308700 0 0 3 0x14200 bored sosplice 54126 374605 33619 0 3 0x82 wait syz-executor.0 38843 214506 33619 0 3 0x82 wait syz-executor.1 33619 60951 34120 0 3 0x82 thrsleep syz-fuzzer 33619 170522 34120 0 3 0x4000082 nanosleep syz-fuzzer 33619 204055 34120 0 3 0x4000082 thrsleep syz-fuzzer 33619 46018 34120 0 3 0x4000082 thrsleep syz-fuzzer 33619 237946 34120 0 3 0x4000082 thrsleep syz-fuzzer 33619 199578 34120 0 3 0x4000082 kqread syz-fuzzer 33619 122249 34120 0 3 0x4000082 thrsleep syz-fuzzer 33619 242331 34120 0 3 0x4000082 thrsleep syz-fuzzer 34120 416127 22151 0 3 0x10008a pause ksh 22151 294769 10725 0 3 0x92 select sshd 38350 111583 1 0 3 0x100083 ttyin getty 10725 200163 1 0 3 0x80 select sshd 12353 88508 70084 73 3 0x100010 ffs_fsync syslogd 70084 87227 1 0 3 0x100082 netio syslogd 94894 290546 1 77 3 0x100090 poll dhclient 58444 354379 1 0 3 0x80 poll dhclient 74362 189457 0 0 3 0x14200 bored smr 70571 198229 0 0 2 0x14200 zerothread 26085 446968 0 0 3 0x14200 aiodoned aiodoned 42803 241560 0 0 3 0x14200 syncer update 84713 500540 0 0 3 0x14200 cleaner cleaner *76900 340969 0 0 7 0x14200 reaper 11435 400777 0 0 3 0x14200 pgdaemon pagedaemon 12877 43486 0 0 3 0x14200 bored crynlk 2168 225049 0 0 3 0x14200 bored crypto 1994 79675 0 0 3 0x40014200 acpi0 acpi0 37750 35548 0 0 3 0x14200 bored softnet 8799 120225 0 0 3 0x14200 bored systqmp 16415 195455 0 0 3 0x14200 bored systq 37408 160011 0 0 3 0x40014200 bored softclock 19126 148788 0 0 3 0x40014200 idle0 1 293451 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 9469 6330K 6846K 78643K 10869 0 pcb 13 8K 8K 78643K 51 0 rtable 117 16K 20K 78643K 496 0 ifaddr 54 12K 14K 78643K 147 0 counters 21 16K 17K 78643K 30 0 ioctlops 0 0K 4K 78643K 82 0 iov 0 0K 12K 78643K 18 0 mount 1 1K 1K 78643K 1 0 vnodes 1217 77K 77K 78643K 1314 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 4 0 VM map 2 0K 0K 78643K 2 0 sem 12 0K 0K 78643K 46 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1809 195K 288K 78643K 12938 0 file desc 4 9K 25K 78643K 328 0 proc 49 38K 63K 78643K 384 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 27 0 in_multi 32 2K 2K 78643K 52 0 ether_multi 1 0K 0K 78643K 5 0 mrt 0 0K 0K 78643K 3 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 73 334K 334K 78643K 73 0 exec 0 0K 1K 78643K 195 0 pfkey data 0 0K 1K 78643K 2 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 134 73K 73K 78643K 1584 0 UVM aobj 12 2K 2K 78643K 15 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 7 0K 0K 78643K 21 0 temp 89 3859K 3923K 78643K 12845 0 kqueue 3 4K 20K 78643K 106 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 39 0 37 1 0 1 1 0 8 0 rtentry 112 50 0 13 2 0 2 2 0 8 0 unpcb 120 471 0 463 1 0 1 1 0 8 0 syncache 264 6 0 6 2 2 0 1 0 8 0 tcpqe 32 48 0 48 1 1 0 1 0 8 0 tcpcb 544 100 0 96 1 0 1 1 0 8 0 ipq 40 5 0 5 1 1 0 1 0 8 0 ipqe 40 96 0 96 1 1 0 1 0 8 0 inpcb 296 268 0 261 3 2 1 2 0 8 0 rttmr 72 3 0 3 1 1 0 1 0 8 0 ip6q 72 1 0 1 1 1 0 1 0 8 0 ip6af 40 2 0 2 1 1 0 1 0 8 0 nd6 48 8 0 5 1 0 1 1 0 8 0 pkpcb 40 6 0 6 2 2 0 1 0 8 0 ppxss 1136 2 0 2 2 2 0 1 0 8 0 pfrktable 1344 99 0 90 3 2 1 2 0 8 0 pftag 88 13 0 12 1 0 1 1 0 8 0 pfrule 1360 26 0 14 1 0 1 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 233 0 85 15 4 11 15 0 8 0 art_table 32 234 0 85 2 0 2 2 0 8 0 art_node 16 49 0 15 1 0 1 1 0 8 0 sysvmsgpl 40 12 0 4 1 0 1 1 0 8 0 semupl 112 2 0 2 1 1 0 1 0 8 0 semapl 112 44 0 34 1 0 1 1 0 8 0 shmpl 112 12 0 3 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1835 0 436 88 0 88 88 0 8 0 ffsino 240 1835 0 436 83 0 83 83 0 8 0 nchpl 144 2561 0 957 60 0 60 60 0 8 0 uvmvnodes 72 1938 0 0 36 0 36 36 0 8 0 vnodes 208 1938 0 0 102 0 102 102 0 8 0 namei 1024 7297 0 7297 3 3 0 1 0 8 0 vcpupl 1984 6 0 0 1 0 1 1 0 8 0 vmpool 528 6 0 0 1 0 1 1 0 8 0 pfiaddrpl 120 32 0 24 1 0 1 1 0 8 0 scxspl 192 7376 0 7375 1 0 1 1 0 8 0 plimitpl 152 40 0 32 1 0 1 1 0 8 0 sigapl 424 516 0 487 4 0 4 4 0 8 0 futexpl 56 6427 0 6427 4 4 0 1 0 8 0 knotepl 112 168 0 149 1 0 1 1 0 8 0 kqueuepl 144 228 0 226 1 0 1 1 0 8 0 pipepl 272 111 0 101 1 0 1 1 0 8 0 fdescpl 432 500 0 487 2 0 2 2 0 8 0 filepl 120 3625 0 3530 5 2 3 4 0 8 0 lockfpl 104 89 0 88 1 0 1 1 0 8 0 lockfspl 48 29 0 28 1 0 1 1 0 8 0 sessionpl 112 17 0 7 1 0 1 1 0 8 0 pgrppl 48 25 0 15 1 0 1 1 0 8 0 ucredpl 96 814 0 807 1 0 1 1 0 8 0 zombiepl 144 487 0 485 1 0 1 1 0 8 0 processpl 928 516 0 485 4 0 4 4 0 8 0 procpl 624 871 0 832 4 0 4 4 0 8 0 sosppl 128 15 0 15 3 3 0 1 0 8 0 sockpl 400 784 0 765 3 0 3 3 0 8 0 mcl64k 65536 8 0 8 2 2 0 1 0 8 0 mcl16k 16384 1 0 1 1 1 0 1 0 8 0 mcl12k 12288 8 0 8 2 2 0 1 0 8 0 mcl9k 9216 4 0 4 1 1 0 1 0 8 0 mcl8k 8192 15 0 15 3 3 0 1 0 8 0 mcl4k 4096 39 0 39 3 3 0 1 0 8 0 mcl2k2 2112 1 0 1 1 1 0 1 0 8 0 mcl2k 2048 87779 0 87726 17 9 8 14 0 8 0 mtagpl 96 25 0 7 2 1 1 1 0 8 0 mbufpl 256 141314 0 141137 23 11 12 18 0 8 0 bufpl 280 5304 0 126 370 0 370 370 0 8 0 anonpl 16 68188 0 50323 94 7 87 87 0 107 0 amapchunkpl 152 2788 0 2388 24 8 16 17 0 158 0 amappl16 192 2353 0 1401 51 3 48 50 0 8 0 amappl15 184 1 0 0 1 0 1 1 0 8 0 amappl14 176 33 0 29 1 0 1 1 0 8 0 amappl13 168 26 0 23 1 0 1 1 0 8 0 amappl12 160 163 0 159 2 1 1 1 0 8 0 amappl11 152 56 0 45 1 0 1 1 0 8 0 amappl10 144 19 0 12 1 0 1 1 0 8 0 amappl9 136 507 0 504 1 0 1 1 0 8 0 amappl8 128 468 0 429 2 0 2 2 0 8 0 amappl7 120 107 0 94 1 0 1 1 0 8 0 amappl6 112 25 0 18 1 0 1 1 0 8 0 amappl5 104 603 0 589 1 0 1 1 0 8 0 amappl4 96 420 0 392 1 0 1 1 0 8 0 amappl3 88 113 0 108 1 0 1 1 0 8 0 amappl2 80 3193 0 3118 2 0 2 2 0 8 0 amappl1 72 19992 0 19537 23 14 9 17 0 8 0 amappl 80 1104 0 1056 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 14 0 3 1 0 1 1 0 8 0 uaddrrnd 24 506 0 486 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 506 0 486 1 0 1 1 0 8 0 vmmpekpl 168 7137 0 7107 2 0 2 2 0 8 0 vmmpepl 168 67691 0 65489 126 30 96 115 0 357 0 vmsppl 272 505 0 485 2 0 2 2 0 8 0 pdppl 4096 1018 0 976 6 0 6 6 0 8 0 pvpl 32 237421 0 218976 322 23 299 309 0 265 108 pmappl 200 505 0 485 3 1 2 2 0 8 0 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 262 0 38 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(ffff80001d696100,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 softintr_dispatch(0) at softintr_dispatch+0xda sys/arch/amd64/amd64/softintr.c:102 Xsoftclock() at Xsoftclock+0x1f Xspllower() at Xspllower+0x19 printf(ffffffff823c6d5a) at printf+0x83 sys/kern/subr_prf.c:509 uvm_fault_unwire_locked(fffffd8057746668,9cae7ee000,9cae7ef000) at uvm_fault_unwire_locked+0x1f1 sys/uvm/uvm_fault.c:1364 uvm_unmap_kill_entry(fffffd8057746668,fffffd805724ca50) at uvm_unmap_kill_entry+0x5d sys/uvm/uvm_map.c:2106 uvm_map_teardown(fffffd8057746668) at uvm_map_teardown+0x165 uvm_map_addr_RBT_LEFT sys/uvm/uvm_map.h:176 [inline] uvm_map_teardown(fffffd8057746668) at uvm_map_teardown+0x165 sys/uvm/uvm_map.c:2739 uvmspace_free(fffffd8057746668) at uvmspace_free+0x86 sys/uvm/uvm_map.c:3646 uvm_exit(ffff80001d7075d8) at uvm_exit+0x29 sys/uvm/uvm_glue.c:297 reaper(ffff80001d6519c0) at reaper+0x15c sys/kern/kern_exit.c:456 end trace frame: 0x0, count: -16 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(ffff80001d696100,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 softintr_dispatch(0) at softintr_dispatch+0xda sys/arch/amd64/amd64/softintr.c:102 Xsoftclock() at Xsoftclock+0x1f Xspllower() at Xspllower+0x19 printf(ffffffff823c6d5a) at printf+0x83 sys/kern/subr_prf.c:509 uvm_fault_unwire_locked(fffffd8057746668,9cae7ee000,9cae7ef000) at uvm_fault_unwire_locked+0x1f1 sys/uvm/uvm_fault.c:1364 uvm_unmap_kill_entry(fffffd8057746668,fffffd805724ca50) at uvm_unmap_kill_entry+0x5d sys/uvm/uvm_map.c:2106 uvm_map_teardown(fffffd8057746668) at uvm_map_teardown+0x165 uvm_map_addr_RBT_LEFT sys/uvm/uvm_map.h:176 [inline] uvm_map_teardown(fffffd8057746668) at uvm_map_teardown+0x165 sys/uvm/uvm_map.c:2739 uvmspace_free(fffffd8057746668) at uvmspace_free+0x86 sys/uvm/uvm_map.c:3646 uvm_exit(ffff80001d7075d8) at uvm_exit+0x29 sys/uvm/uvm_glue.c:297 reaper(ffff80001d6519c0) at reaper+0x15c sys/kern/kern_exit.c:456 end trace frame: 0x0, count: -16