uvm_fault(0xfffffd806bc09220, 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(0xfffffd806bc09220, 0xa, 0, 1) -> e vio_rxeof(ffff80000017a000) at vio_rxeof+0x191 sys/dev/pv/if_vio.c:1018 end trace frame: 0xffff80001e9a5020, 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(ffff80001e9a50d0,ffff800000655380) at intr_handler+0x4d sys/arch/amd64/amd64/intr.c:537 Xintr_ioapic_edge19_untramp() at Xintr_ioapic_edge19_untramp+0x19f spllower(0) at spllower+0x74 sys/arch/amd64/amd64/intr.c:727 vm_map_lock_ln(fffffd806bc09110,fffffd805754ba40,0) at vm_map_lock_ln+0xf4 sys/uvm/uvm_map.c:5445 uvmspace_fork(ffff80001d6c5970) at uvmspace_fork+0x10a sys/uvm/uvm_map.c:4069 process_new(ffff80001d6c2768,ffff80001d6c5970,1) at process_new+0x16f sys/kern/kern_fork.c:258 fork1(ffff80001d6a9008,1,ffffffff82077550,0,ffff80001e9a5430,0) at fork1+0x31b sys/kern/kern_fork.c:377 syscall(ffff80001e9a54b0) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffc4470, count: -12 ddb> show registers rdi 0xc rsi 0xc rbp 0xffff80001e9a4fc0 rbx 0xffff80000017a000 rdx 0 rcx 0xffff8000001ab000 rax 0 r8 0x2 r9 0 r10 0xd3890fedfd1c10ae r11 0xb684804f91e2709b r12 0xffff80000002ea00 r13 0xc r14 0xfffffd805bc01700 r15 0 rip 0xffffffff81b68bf1 vio_rxeof+0x191 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80001e9a4f30 ss 0x10 vio_rxeof+0x191: movzwl 0xa(%r15),%eax ddb> show proc PROC (syz-executor.1) pid=475042 stat=onproc flags process=2 proc=0 pri=16, usrpri=80, nice=20 forw=0xffffffffffffffff, list=0xffff80001d6a9c38,0xffff80001d71cec0 process=0xffff80001d6c5970 user=0xffff80001e9a0000, vmspace=0xfffffd806bc09220 estcpu=30, cpticks=0, pctcpu=0.3 user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 41749 85886 0 0 3 0x14280 nfsidl nfsio 66300 513634 0 0 3 0x14280 nfsidl nfsio 32293 433849 0 0 3 0x14280 nfsidl nfsio 58879 346426 0 0 3 0x14280 nfsidl nfsio 48568 151711 0 0 3 0x14280 nfsidl nfsio 8612 516127 0 0 3 0x14280 nfsidl nfsio 17539 92609 0 0 3 0x14280 nfsidl nfsio 45829 464120 0 0 3 0x14280 nfsidl nfsio 78124 373285 0 0 3 0x14280 nfsidl nfsio 77947 137813 0 0 3 0x14280 nfsidl nfsio 58793 520545 0 0 3 0x14280 nfsidl nfsio 13433 85678 0 0 3 0x14280 nfsidl nfsio 95266 242029 0 0 3 0x14280 nfsidl nfsio 26993 174166 0 0 3 0x14280 nfsidl nfsio 26713 158604 0 0 3 0x14280 nfsidl nfsio 8490 504475 0 0 3 0x14280 nfsidl nfsio 86043 91562 0 0 3 0x14280 nfsidl nfsio 64483 239691 0 0 3 0x14280 nfsidl nfsio 39085 98175 0 0 3 0x14280 nfsidl nfsio 79112 207694 0 0 3 0x14280 nfsidl nfsio 7465 413239 89499 0 2 0x2 syz-executor.0 13142 129955 1 0 3 0x100083 ttyin getty 11153 180328 0 0 3 0x14200 bored sosplice *10573 475042 89499 0 7 0x2 syz-executor.1 89499 4990 82671 0 3 0x82 thrsleep syz-fuzzer 89499 459055 82671 0 3 0x4000082 nanosleep syz-fuzzer 89499 316059 82671 0 3 0x4000082 thrsleep syz-fuzzer 89499 224908 82671 0 3 0x4000082 thrsleep syz-fuzzer 89499 229544 82671 0 3 0x4000082 thrsleep syz-fuzzer 89499 52762 82671 0 2 0x4000002 syz-fuzzer 89499 366820 82671 0 3 0x4000082 thrsleep syz-fuzzer 89499 53780 82671 0 3 0x4000082 thrsleep syz-fuzzer 82671 375949 38811 0 3 0x10008a pause ksh 38811 414990 35590 0 2 0x12 sshd 35590 87090 1 0 3 0x80 select sshd 83483 335375 26188 73 3 0x100090 kqread syslogd 26188 198519 1 0 3 0x100082 netio syslogd 75604 251355 1 77 3 0x100090 poll dhclient 9740 473079 1 0 3 0x80 poll dhclient 8081 290714 0 0 3 0x14200 bored smr 78610 383573 0 0 2 0x14200 zerothread 12297 164724 0 0 3 0x14200 aiodoned aiodoned 457 391888 0 0 3 0x14200 syncer update 65910 196471 0 0 3 0x14200 cleaner cleaner 25757 27880 0 0 3 0x14200 reaper reaper 87582 265644 0 0 3 0x14200 pgdaemon pagedaemon 78182 312001 0 0 3 0x14200 bored crynlk 76856 350978 0 0 3 0x14200 bored crypto 60481 398080 0 0 3 0x40014200 acpi0 acpi0 74671 20595 0 0 3 0x14200 bored softnet 3522 210588 0 0 3 0x14200 bored systqmp 35582 45175 0 0 3 0x14200 bored systq 37809 157505 0 0 3 0x40014200 bored softclock 15339 61216 0 0 3 0x40014200 idle0 1 62072 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 9541 6398K 6582K 78643K 10819 0 pcb 13 8K 8K 78643K 241 0 rtable 119 5K 9K 78643K 894 0 ifaddr 105 19K 20K 78643K 368 0 sysctl 2 0K 0K 78643K 2 0 counters 21 16K 16K 78643K 39 0 ioctlops 0 0K 4K 78643K 247 0 iov 0 0K 16K 78643K 121 0 mount 1 1K 1K 78643K 1 0 vnodes 1213 76K 77K 78643K 1396 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 9K 78643K 23 0 VM map 2 0K 0K 78643K 2 0 sem 12 0K 0K 78643K 276 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1809 195K 288K 78643K 12938 0 file desc 5 13K 25K 78643K 1295 0 sigio 0 0K 0K 78643K 84 0 proc 50 38K 55K 78643K 548 0 subproc 32 2K 2K 78643K 68 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 108 0 in_multi 98 4K 4K 78643K 281 0 ether_multi 1 0K 0K 78643K 43 0 mrt 0 0K 0K 78643K 5 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 61 281K 281K 78643K 61 0 exec 0 0K 1K 78643K 316 0 pfkey data 0 0K 0K 78643K 5 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 136 40K 44K 78643K 3800 0 UVM aobj 67 6K 6K 78643K 82 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 203 0 NDP 17 0K 0K 78643K 54 0 temp 154 3863K 3927K 78643K 30732 0 kqueue 3 4K 22K 78643K 72 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 13 0 5 1 0 1 1 0 8 0 rtpcb 80 80 0 78 1 0 1 1 0 8 0 rtentry 112 128 0 84 2 0 2 2 0 8 0 unpcb 120 565 0 556 1 0 1 1 0 8 0 syncache 264 8 0 8 3 3 0 1 0 8 0 tcpqe 32 43 0 43 2 2 0 1 0 8 0 tcpcb 544 2334 0 2328 6 4 2 2 0 8 1 ipq 40 8 0 8 4 4 0 1 0 8 0 ipqe 40 108 0 108 4 4 0 1 0 8 0 inpcb 296 3228 0 3216 2 0 2 2 0 8 0 rttmr 72 2 0 2 2 1 1 1 0 8 1 nd6 48 40 0 25 1 0 1 1 0 8 0 pkpcb 40 9 0 9 3 3 0 1 0 8 0 swfcl 56 4 0 0 1 0 1 1 0 8 0 ppxss 1136 2 0 2 2 1 1 1 0 8 1 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 2 0 0 1 0 1 1 0 8 0 pfrke_plain 160 2 0 0 1 0 1 1 0 8 0 pfrktable 1344 158 0 155 1 0 1 1 0 8 0 pftag 88 29 0 28 2 1 1 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 44 0 30 2 0 2 2 0 8 0 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 629 0 344 24 6 18 19 0 8 0 art_table 32 631 0 344 3 0 3 3 0 8 0 art_node 16 108 0 71 1 0 1 1 0 8 0 sysvmsgpl 40 18 0 12 1 0 1 1 0 8 0 semupl 112 3 0 3 1 1 0 1 0 8 0 semapl 112 274 0 264 1 0 1 1 0 8 0 shmpl 112 79 0 15 2 0 2 2 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 3027 0 1628 90 1 89 89 0 8 0 ffsino 240 3027 0 1628 83 0 83 83 0 8 0 nchpl 144 4957 0 3373 60 0 60 60 0 8 0 rtmask 32 4 0 2 1 0 1 1 0 8 0 uvmvnodes 72 3120 0 0 57 0 57 57 0 8 0 vnodes 208 3120 0 0 165 0 165 165 0 8 0 namei 1024 13722 0 13722 1 0 1 1 0 8 1 vcpupl 1984 2 0 0 1 0 1 1 0 8 0 vmpool 528 10 0 8 2 1 1 1 0 8 0 pfiaddrpl 120 54 0 52 1 0 1 1 0 8 0 scxspl 192 15087 0 15087 1 0 1 1 0 8 1 plimitpl 152 90 0 83 1 0 1 1 0 8 0 sigapl 424 1498 0 1449 6 0 6 6 0 8 0 futexpl 56 27481 0 27481 1 0 1 1 0 8 1 knotepl 112 228 0 209 2 1 1 2 0 8 0 kqueuepl 144 201 0 197 1 0 1 1 0 8 0 pipepl 272 315 0 305 2 1 1 2 0 8 0 fdescpl 432 1462 0 1448 2 0 2 2 0 8 0 filepl 120 9406 0 9311 4 0 4 4 0 8 1 lockfpl 104 149 0 148 1 0 1 1 0 8 0 lockfspl 48 48 0 47 1 0 1 1 0 8 0 sessionpl 112 20 0 10 1 0 1 1 0 8 0 pgrppl 48 42 0 32 1 0 1 1 0 8 0 ucredpl 96 783 0 776 1 0 1 1 0 8 0 zombiepl 144 1449 0 1449 1 0 1 1 0 8 1 processpl 928 1498 0 1449 7 0 7 7 0 8 0 procpl 624 2951 0 2895 6 1 5 6 0 8 0 sosppl 128 20 0 20 5 4 1 1 0 8 1 sockpl 400 3885 0 3863 6 2 4 4 0 8 1 mcl64k 65536 84 0 82 2 1 1 1 0 8 0 mcl16k 16384 7 0 7 3 3 0 1 0 8 0 mcl12k 12288 47 0 46 3 2 1 1 0 8 0 mcl9k 9216 15 0 15 4 3 1 1 0 8 1 mcl8k 8192 46 0 46 2 1 1 1 0 8 1 mcl4k 4096 138 0 138 2 1 1 1 0 8 1 mcl2k2 2112 7 0 7 5 5 0 1 0 8 0 mcl2k 2048 94506 0 94460 20 13 7 15 0 8 0 mtagpl 96 6 0 6 2 2 0 1 0 8 0 mbufpl 256 157434 0 157131 35 11 24 27 0 8 0 bufpl 280 7260 0 1908 383 0 383 383 0 8 0 anonpl 16 176543 0 159601 112 28 84 86 0 107 7 amapchunkpl 152 7129 0 6996 33 26 7 20 0 158 0 amappl16 192 7273 0 6240 97 37 60 64 0 8 8 amappl15 184 961 0 959 1 0 1 1 0 8 0 amappl14 176 33 0 29 1 0 1 1 0 8 0 amappl13 168 41 0 38 1 0 1 1 0 8 0 amappl12 160 9 0 7 2 1 1 1 0 8 0 amappl11 152 55 0 46 1 0 1 1 0 8 0 amappl10 144 979 0 971 1 0 1 1 0 8 0 amappl9 136 632 0 629 1 0 1 1 0 8 0 amappl8 128 660 0 616 2 0 2 2 0 8 0 amappl7 120 120 0 108 1 0 1 1 0 8 0 amappl6 112 28 0 19 1 0 1 1 0 8 0 amappl5 104 1424 0 1411 1 0 1 1 0 8 0 amappl4 96 474 0 443 1 0 1 1 0 8 0 amappl3 88 167 0 162 1 0 1 1 0 8 0 amappl2 80 11735 0 11676 2 0 2 2 0 8 0 amappl1 72 41386 0 40994 24 15 9 17 0 8 0 amappl 80 3219 0 3176 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 81 0 15 2 0 2 2 0 8 0 uaddrrnd 24 1472 0 1456 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1472 0 1456 1 0 1 1 0 8 0 vmmpekpl 168 13148 0 13114 2 0 2 2 0 8 0 vmmpepl 168 184811 0 182780 178 68 110 140 0 357 12 vmsppl 272 1471 0 1456 4 2 2 2 0 8 1 pdppl 4096 2950 0 2914 7 2 5 6 0 8 0 pvpl 32 483882 0 463918 329 44 285 298 0 265 106 pmappl 200 1471 0 1456 1 0 1 1 0 8 0 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 302 0 51 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(ffff80001e9a50d0,ffff800000655380) at intr_handler+0x4d sys/arch/amd64/amd64/intr.c:537 Xintr_ioapic_edge19_untramp() at Xintr_ioapic_edge19_untramp+0x19f spllower(0) at spllower+0x74 sys/arch/amd64/amd64/intr.c:727 vm_map_lock_ln(fffffd806bc09110,fffffd805754ba40,0) at vm_map_lock_ln+0xf4 sys/uvm/uvm_map.c:5445 uvmspace_fork(ffff80001d6c5970) at uvmspace_fork+0x10a sys/uvm/uvm_map.c:4069 process_new(ffff80001d6c2768,ffff80001d6c5970,1) at process_new+0x16f sys/kern/kern_fork.c:258 fork1(ffff80001d6a9008,1,ffffffff82077550,0,ffff80001e9a5430,0) at fork1+0x31b sys/kern/kern_fork.c:377 syscall(ffff80001e9a54b0) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffc4470, count: -12 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(ffff80001e9a50d0,ffff800000655380) at intr_handler+0x4d sys/arch/amd64/amd64/intr.c:537 Xintr_ioapic_edge19_untramp() at Xintr_ioapic_edge19_untramp+0x19f spllower(0) at spllower+0x74 sys/arch/amd64/amd64/intr.c:727 vm_map_lock_ln(fffffd806bc09110,fffffd805754ba40,0) at vm_map_lock_ln+0xf4 sys/uvm/uvm_map.c:5445 uvmspace_fork(ffff80001d6c5970) at uvmspace_fork+0x10a sys/uvm/uvm_map.c:4069 process_new(ffff80001d6c2768,ffff80001d6c5970,1) at process_new+0x16f sys/kern/kern_fork.c:258 fork1(ffff80001d6a9008,1,ffffffff82077550,0,ffff80001e9a5430,0) at fork1+0x31b sys/kern/kern_fork.c:377 syscall(ffff80001e9a54b0) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffc4470, count: -12