login: uvm_fault(0xfffffd806bc09330, 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(0xfffffd806bc09330, 0xa, 0, 1) -> e vio_rxeof(ffff80000017a000) at vio_rxeof+0x191 sys/dev/pv/if_vio.c:1018 end trace frame: 0xffff80001e7b9440, 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(ffff80001e7b94f0,ffff800000655380) at intr_handler+0x4d sys/arch/amd64/amd64/intr.c:537 Xintr_ioapic_edge19_untramp() at Xintr_ioapic_edge19_untramp+0x19f VOP_IOCTL(fffffd805aa7bd20,80044b02,ffff80001e7b9760,3,fffffd806c3bfa20,ffff80001d71ceb0) at VOP_IOCTL+0x6c sys/kern/vfs_vops.c:285 vn_ioctl(fffffd805d8838f0,80044b02,ffff80001e7b9760,ffff80001d71ceb0) at vn_ioctl+0xb5 sys/kern/vfs_vnops.c:531 sys_ioctl(ffff80001d71ceb0,ffff80001e7b9870,ffff80001e7b98c0) at sys_ioctl+0x4a1 syscall(ffff80001e7b9940) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x3cce6be0c30, count: -10 ddb> show registers rdi 0xc rsi 0xc rbp 0xffff80001e7b93e0 rbx 0xffff80000017a000 rdx 0 rcx 0xffff8000001ab000 rax 0 r8 0x2 r9 0 r10 0 r11 0x683f12a62a46854d r12 0xffff80000002ea00 r13 0xc r14 0xfffffd8058951500 r15 0 rip 0xffffffff8144b091 vio_rxeof+0x191 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80001e7b9350 ss 0x10 vio_rxeof+0x191: movzwl 0xa(%r15),%eax ddb> show proc PROC (syz-executor.1) pid=474652 stat=onproc flags process=0 proc=4000000 pri=69, usrpri=69, nice=20 forw=0xffffffffffffffff, list=0xffff80001d71d600,0xffffffff82829c20 process=0xffff80001d6c4af0 user=0xffff80001e7b4000, vmspace=0xfffffd806bc09330 estcpu=36, cpticks=1, pctcpu=0.0 user=0, sys=0, intr=1 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 86965 51108 29892 0 2 0 syz-executor.1 *86965 474652 29892 0 7 0x4000000 syz-executor.1 76947 337672 63346 0 3 0x2 biowait syz-executor.0 29892 348862 63346 0 3 0x82 nanosleep syz-executor.1 63346 311136 19019 0 3 0x82 thrsleep syz-fuzzer 63346 479146 19019 0 3 0x4000082 nanosleep syz-fuzzer 63346 335208 19019 0 3 0x4000082 thrsleep syz-fuzzer 63346 456967 19019 0 3 0x4000082 thrsleep syz-fuzzer 63346 397087 19019 0 3 0x4000082 thrsleep syz-fuzzer 63346 69943 19019 0 3 0x4000082 kqread syz-fuzzer 63346 198106 19019 0 3 0x4000082 thrsleep syz-fuzzer 63346 343288 19019 0 3 0x4000082 thrsleep syz-fuzzer 19019 204256 84074 0 3 0x10008a pause ksh 84074 282098 64840 0 3 0x92 select sshd 26895 125930 1 0 3 0x100083 ttyin getty 64840 231950 1 0 3 0x80 select sshd 35597 330405 18379 73 3 0x100090 kqread syslogd 18379 490792 1 0 3 0x100082 netio syslogd 60835 497548 1 77 3 0x100090 poll dhclient 70066 128931 1 0 3 0x80 poll dhclient 76855 244305 0 0 3 0x14200 bored smr 46536 71022 0 0 2 0x14200 zerothread 12925 32648 0 0 3 0x14200 aiodoned aiodoned 17896 465154 0 0 3 0x14200 syncer update 50248 493835 0 0 3 0x14200 cleaner cleaner 30410 453164 0 0 3 0x14200 reaper reaper 61024 246769 0 0 3 0x14200 pgdaemon pagedaemon 37443 76178 0 0 3 0x14200 bored crynlk 98254 94929 0 0 3 0x14200 bored crypto 84490 513309 0 0 3 0x40014200 acpi0 acpi0 63530 275936 0 0 3 0x14200 bored softnet 19418 184003 0 0 3 0x14200 bored systqmp 12391 297935 0 0 3 0x14200 bored systq 3645 316429 0 0 3 0x40014200 bored softclock 94521 480311 0 0 3 0x40014200 idle0 1 171590 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 9446 6323K 6462K 78643K 10560 0 pcb 13 8K 8K 78643K 15 0 rtable 107 3K 3K 78643K 191 0 ifaddr 39 10K 10K 78643K 41 0 counters 21 16K 16K 78643K 21 0 ioctlops 0 0K 2K 78643K 15 0 iov 0 0K 2K 78643K 22 0 mount 1 1K 1K 78643K 1 0 vnodes 1220 77K 77K 78643K 1227 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 3 0 VM map 2 0K 0K 78643K 2 0 sem 6 0K 0K 78643K 6 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1809 195K 288K 78643K 12938 0 file desc 5 13K 25K 78643K 47 0 sigio 0 0K 0K 78643K 4 0 proc 47 38K 63K 78643K 358 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 33 2K 2K 78643K 33 0 ether_multi 1 0K 0K 78643K 1 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 31 148K 148K 78643K 31 0 exec 0 0K 1K 78643K 181 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 127 23K 23K 78643K 976 0 UVM aobj 5 4K 4K 78643K 7 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 5 0 NDP 9 0K 0K 78643K 9 0 temp 61 3847K 3911K 78643K 1800 0 kqueue 3 4K 4K 78643K 3 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 19 0 17 1 0 1 1 0 8 0 rtentry 112 46 0 1 2 0 2 2 0 8 0 unpcb 120 31 0 23 1 0 1 1 0 8 0 syncache 264 4 0 4 1 1 0 1 0 8 0 tcpqe 32 665 0 665 1 0 1 1 0 8 1 tcpcb 544 16 0 12 1 0 1 1 0 8 0 inpcb 296 48 0 41 1 0 1 1 0 8 0 nd6 48 7 0 0 1 0 1 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 190 0 0 12 0 12 12 0 8 0 art_table 32 191 0 0 2 0 2 2 0 8 0 art_node 16 45 0 4 1 0 1 1 0 8 0 semupl 112 1 0 1 1 0 1 1 0 8 1 semapl 112 4 0 0 1 0 1 1 0 8 0 shmpl 112 4 0 2 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1433 0 35 88 0 88 88 0 8 0 ffsino 240 1433 0 35 83 0 83 83 0 8 0 nchpl 144 1687 0 84 60 0 60 60 0 8 0 uvmvnodes 72 1482 0 0 27 0 27 27 0 8 0 vnodes 208 1482 0 0 78 0 78 78 0 8 0 namei 1024 4148 0 4148 2 1 1 1 0 8 1 scxspl 192 4917 0 4916 1 0 1 1 0 8 0 plimitpl 152 14 0 7 1 0 1 1 0 8 0 sigapl 424 233 0 205 4 0 4 4 0 8 0 futexpl 56 409 0 409 1 0 1 1 0 8 1 knotepl 112 61 0 42 1 0 1 1 0 8 0 kqueuepl 144 4 0 2 1 0 1 1 0 8 0 pipepl 272 74 0 64 2 0 2 2 0 8 1 fdescpl 432 219 0 205 2 0 2 2 0 8 0 filepl 120 1099 0 1004 4 0 4 4 0 8 1 lockfpl 104 13 0 12 1 0 1 1 0 8 0 lockfspl 48 6 0 5 1 0 1 1 0 8 0 sessionpl 112 17 0 7 1 0 1 1 0 8 0 pgrppl 48 19 0 9 1 0 1 1 0 8 0 ucredpl 96 54 0 47 1 0 1 1 0 8 0 zombiepl 144 205 0 205 2 1 1 1 0 8 1 processpl 928 233 0 205 4 0 4 4 0 8 0 procpl 624 259 0 223 4 0 4 4 0 8 1 sockpl 400 98 0 81 3 0 3 3 0 8 1 mcl64k 65536 1 0 1 1 0 1 1 0 8 1 mcl8k 8192 1 0 1 1 0 1 1 0 8 1 mcl4k 4096 11 0 11 2 1 1 1 0 8 1 mcl2k 2048 92165 0 92108 25 9 16 20 0 8 7 mtagpl 96 4 0 2 2 1 1 1 0 8 0 mbufpl 256 145868 0 145726 15 3 12 12 0 8 2 bufpl 280 3299 0 126 227 0 227 227 0 8 0 anonpl 16 40197 0 22939 71 1 70 70 0 107 0 amapchunkpl 152 1077 0 950 8 0 8 8 0 158 1 amappl16 192 1117 0 164 48 0 48 48 0 8 0 amappl15 184 1 0 0 1 0 1 1 0 8 0 amappl14 176 30 0 24 1 0 1 1 0 8 0 amappl13 168 35 0 30 1 0 1 1 0 8 0 amappl12 160 16 0 13 1 0 1 1 0 8 0 amappl11 152 53 0 42 1 0 1 1 0 8 0 amappl10 144 13 0 9 1 0 1 1 0 8 0 amappl9 136 374 0 373 1 0 1 1 0 8 0 amappl8 128 334 0 287 2 0 2 2 0 8 0 amappl7 120 104 0 93 1 0 1 1 0 8 0 amappl6 112 27 0 22 2 1 1 1 0 8 0 amappl5 104 151 0 140 1 0 1 1 0 8 0 amappl4 96 431 0 401 1 0 1 1 0 8 0 amappl3 88 106 0 99 1 0 1 1 0 8 0 amappl2 80 943 0 873 2 0 2 2 0 8 0 amappl1 72 13823 0 13405 23 9 14 17 0 8 4 amappl 80 501 0 461 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 6 0 2 1 0 1 1 0 8 0 uaddrrnd 24 219 0 205 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 219 0 205 1 0 1 1 0 8 0 vmmpekpl 168 5707 0 5677 3 1 2 2 0 8 0 vmmpepl 168 34674 0 32609 126 10 116 116 0 357 26 vmsppl 272 218 0 205 2 0 2 2 0 8 1 pdppl 4096 444 0 410 6 0 6 6 0 8 1 pvpl 32 131508 0 111313 163 0 163 163 0 265 0 pmappl 200 218 0 205 1 0 1 1 0 8 0 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 253 0 16 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(ffff80001e7b94f0,ffff800000655380) at intr_handler+0x4d sys/arch/amd64/amd64/intr.c:537 Xintr_ioapic_edge19_untramp() at Xintr_ioapic_edge19_untramp+0x19f VOP_IOCTL(fffffd805aa7bd20,80044b02,ffff80001e7b9760,3,fffffd806c3bfa20,ffff80001d71ceb0) at VOP_IOCTL+0x6c sys/kern/vfs_vops.c:285 vn_ioctl(fffffd805d8838f0,80044b02,ffff80001e7b9760,ffff80001d71ceb0) at vn_ioctl+0xb5 sys/kern/vfs_vnops.c:531 sys_ioctl(ffff80001d71ceb0,ffff80001e7b9870,ffff80001e7b98c0) at sys_ioctl+0x4a1 syscall(ffff80001e7b9940) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x3cce6be0c30, count: -10 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(ffff80001e7b94f0,ffff800000655380) at intr_handler+0x4d sys/arch/amd64/amd64/intr.c:537 Xintr_ioapic_edge19_untramp() at Xintr_ioapic_edge19_untramp+0x19f VOP_IOCTL(fffffd805aa7bd20,80044b02,ffff80001e7b9760,3,fffffd806c3bfa20,ffff80001d71ceb0) at VOP_IOCTL+0x6c sys/kern/vfs_vops.c:285 vn_ioctl(fffffd805d8838f0,80044b02,ffff80001e7b9760,ffff80001d71ceb0) at vn_ioctl+0xb5 sys/kern/vfs_vnops.c:531 sys_ioctl(ffff80001d71ceb0,ffff80001e7b9870,ffff80001e7b98c0) at sys_ioctl+0x4a1 syscall(ffff80001e7b9940) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x3cce6be0c30, count: -10