uvm_fault(0xfffffd806bc09ee0, 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(0xfffffd806bc09ee0, 0xa, 0, 1) -> e vio_rxeof(ffff80000017a000) at vio_rxeof+0x191 sys/dev/pv/if_vio.c:1018 end trace frame: 0xffff80001d7955f0, 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(ffff80001d7956a0,ffff800000655380) at intr_handler+0x4d sys/arch/amd64/amd64/intr.c:537 Xintr_ioapic_edge19_untramp() at Xintr_ioapic_edge19_untramp+0x19f clock_secs_to_ymdhms(fc00000000000000,ffff80001d795818) at clock_secs_to_ymdhms+0x1b3 sys/kern/clock_subr.c:137 rtcsettime(ffffffff8285b470,ffff80001d795868) at rtcsettime+0x9c sys/arch/amd64/isa/clock.c:469 settime(ffff80001d7958d8) at settime+0x116 resettodr sys/kern/kern_time.c:877 [inline] settime(ffff80001d7958d8) at settime+0x116 sys/kern/kern_time.c:102 sys_clock_settime(ffff80001d6a9008,ffff80001d795938,ffff80001d795980) at sys_clock_settime+0xc7 sys/kern/kern_time.c:198 syscall(ffff80001d795a00) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xe2d3096d480, count: -11 ddb> show registers rdi 0xc rsi 0xc rbp 0xffff80001d795590 rbx 0xffff80000017a000 rdx 0 rcx 0xffff8000001ab000 rax 0 r8 0x2 r9 0 r10 0 r11 0x604b9a242389132c r12 0xffff80000002ea00 r13 0xc r14 0xfffffd805513b300 r15 0 rip 0xffffffff821f3f21 vio_rxeof+0x191 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80001d795500 ss 0x10 vio_rxeof+0x191: movzwl 0xa(%r15),%eax ddb> show proc PROC (syz-executor.0) pid=480922 stat=onproc flags process=0 proc=4000000 pri=78, usrpri=86, nice=20 forw=0xffffffffffffffff, list=0xffff80001d6aaad8,0xffffffff827f56e0 process=0xffff80001d6c43b0 user=0xffff80001d790000, vmspace=0xfffffd806bc09ee0 estcpu=36, cpticks=3, pctcpu=0.0 user=0, sys=2, intr=1 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 313 442505 8704 0 2 0 syz-executor.0 * 313 480922 8704 0 7 0x4000000 syz-executor.0 8704 387317 57938 0 2 0x482 syz-executor.0 77586 423812 57938 0 2 0x2 syz-executor.1 57938 165443 47000 0 3 0x82 thrsleep syz-fuzzer 57938 244059 47000 0 2 0x4000482 syz-fuzzer 57938 209242 47000 0 3 0x4000082 thrsleep syz-fuzzer 57938 58375 47000 0 3 0x4000082 thrsleep syz-fuzzer 57938 450220 47000 0 3 0x4000082 kqread syz-fuzzer 57938 368554 47000 0 3 0x4000082 thrsleep syz-fuzzer 57938 438566 47000 0 3 0x4000082 thrsleep syz-fuzzer 47000 351231 97726 0 3 0x10008a pause ksh 97726 395927 16456 0 3 0x92 select sshd 8971 75774 1 0 3 0x100083 ttyin getty 16456 439746 1 0 3 0x80 select sshd 21074 91459 66262 73 3 0x100090 kqread syslogd 66262 91817 1 0 3 0x100082 netio syslogd 30110 308687 1 77 3 0x100090 poll dhclient 91286 201964 1 0 3 0x80 poll dhclient 78537 77439 0 0 3 0x14200 bored smr 18145 418970 0 0 2 0x14200 zerothread 94774 121670 0 0 3 0x14200 aiodoned aiodoned 1537 522756 0 0 3 0x14200 syncer update 8752 91477 0 0 3 0x14200 cleaner cleaner 78618 405471 0 0 3 0x14200 reaper reaper 55908 271170 0 0 3 0x14200 pgdaemon pagedaemon 32316 375708 0 0 3 0x14200 bored crynlk 63739 465203 0 0 3 0x14200 bored crypto 27787 136498 0 0 3 0x40014200 acpi0 acpi0 27712 140154 0 0 2 0x14200 softnet 91276 521789 0 0 3 0x14200 bored systqmp 73655 312352 0 0 3 0x14200 bored systq 56955 381933 0 0 3 0x40014200 bored softclock 54891 409452 0 0 3 0x40014200 idle0 1 399098 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 9471 6328K 6594K 78643K 10779 0 pcb 13 8K 8K 78643K 31 0 rtable 114 3K 7K 78643K 318 0 ifaddr 54 12K 12K 78643K 111 0 sysctl 2 0K 0K 78643K 2 0 counters 21 16K 17K 78643K 24 0 ioctlops 0 0K 4K 78643K 45 0 iov 0 0K 12K 78643K 14 0 mount 1 1K 1K 78643K 1 0 vnodes 1219 77K 77K 78643K 1282 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 1K 78643K 38 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1809 195K 288K 78643K 12938 0 file desc 5 13K 25K 78643K 185 0 proc 49 38K 63K 78643K 362 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 7 0 in_multi 37 2K 2K 78643K 75 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 49 228K 228K 78643K 49 0 exec 0 0K 1K 78643K 195 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 135 39K 39K 78643K 1275 0 UVM aobj 5 2K 2K 78643K 9 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 8 0 NDP 8 0K 0K 78643K 21 0 temp 80 3849K 3913K 78643K 2204 0 kqueue 3 4K 12K 78643K 19 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 61 0 13 2 0 2 2 0 8 0 unpcb 120 300 0 292 1 0 1 1 0 8 0 syncache 264 4 0 4 1 1 0 1 0 8 0 tcpqe 32 57 0 57 1 1 0 1 0 8 0 tcpcb 544 38 0 34 1 0 1 1 0 8 0 inpcb 296 146 0 138 3 1 2 2 0 8 1 nd6 48 18 0 9 1 0 1 1 0 8 0 pfrktable 1344 36 0 36 1 1 0 1 0 8 0 pftag 88 4 0 4 1 1 0 1 0 8 0 pfstkey 112 2 0 2 1 1 0 1 0 8 0 pfstate 328 1 0 1 1 1 0 1 0 8 0 pfrule 1360 4 0 4 1 1 0 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 234 0 0 15 0 15 15 0 8 0 art_table 32 235 0 0 2 0 2 2 0 8 0 art_node 16 60 0 17 1 0 1 1 0 8 0 sysvmsgpl 40 4 0 0 1 0 1 1 0 8 0 semupl 112 1 0 1 1 1 0 1 0 8 0 semapl 112 30 0 20 1 0 1 1 0 8 0 shmpl 112 6 0 4 2 1 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1611 0 213 88 0 88 88 0 8 0 ffsino 240 1611 0 213 83 0 83 83 0 8 0 nchpl 144 2013 0 410 60 0 60 60 0 8 0 uvmvnodes 72 1698 0 0 31 0 31 31 0 8 0 vnodes 208 1698 0 0 90 0 90 90 0 8 0 namei 1024 5323 0 5323 2 1 1 1 0 8 1 vcpupl 1984 1 0 0 1 0 1 1 0 8 0 vmpool 528 1 0 0 1 0 1 1 0 8 0 pfiaddrpl 120 10 0 10 1 1 0 1 0 8 0 scxspl 192 5917 0 5917 1 0 1 1 0 8 1 plimitpl 152 24 0 17 1 0 1 1 0 8 0 sigapl 424 371 0 343 4 0 4 4 0 8 0 futexpl 56 3146 0 3146 2 1 1 1 0 8 1 knotepl 112 77 0 58 1 0 1 1 0 8 0 kqueuepl 144 28 0 26 1 0 1 1 0 8 0 pipepl 272 90 0 80 2 1 1 2 0 8 0 fdescpl 432 357 0 343 2 0 2 2 0 8 0 filepl 120 2148 0 2053 4 0 4 4 0 8 1 lockfpl 104 54 0 53 1 0 1 1 0 8 0 lockfspl 48 18 0 17 1 0 1 1 0 8 0 sessionpl 112 17 0 7 1 0 1 1 0 8 0 pgrppl 48 21 0 11 1 0 1 1 0 8 0 ucredpl 96 145 0 138 1 0 1 1 0 8 0 zombiepl 144 343 0 343 1 0 1 1 0 8 1 processpl 928 371 0 343 4 0 4 4 0 8 0 procpl 624 560 0 525 6 2 4 4 0 8 1 sockpl 400 465 0 448 5 1 4 4 0 8 2 mcl64k 65536 5 0 5 1 1 0 1 0 8 0 mcl16k 16384 1 0 1 1 1 0 1 0 8 0 mcl12k 12288 7 0 6 2 1 1 1 0 8 0 mcl9k 9216 1 0 1 1 1 0 1 0 8 0 mcl8k 8192 6 0 5 2 1 1 1 0 8 0 mcl4k 4096 15 0 15 3 2 1 1 0 8 1 mcl2k 2048 90695 0 90645 17 9 8 13 0 8 1 mtagpl 96 16 0 4 2 1 1 1 0 8 0 mbufpl 256 143991 0 143746 19 3 16 16 0 8 0 bufpl 280 3573 0 125 247 0 247 247 0 8 0 anonpl 16 56924 0 40192 83 4 79 79 0 107 2 amapchunkpl 152 1541 0 1400 9 2 7 9 0 158 0 amappl16 192 1957 0 916 57 3 54 54 0 8 1 amappl15 184 1 0 0 1 0 1 1 0 8 0 amappl14 176 22 0 18 1 0 1 1 0 8 0 amappl13 168 110 0 104 1 0 1 1 0 8 0 amappl12 160 164 0 160 1 0 1 1 0 8 0 amappl11 152 57 0 47 1 0 1 1 0 8 0 amappl10 144 19 0 14 1 0 1 1 0 8 0 amappl9 136 374 0 372 1 0 1 1 0 8 0 amappl8 128 330 0 282 2 0 2 2 0 8 0 amappl7 120 106 0 95 1 0 1 1 0 8 0 amappl6 112 24 0 19 1 0 1 1 0 8 0 amappl5 104 277 0 268 1 0 1 1 0 8 0 amappl4 96 511 0 475 1 0 1 1 0 8 0 amappl3 88 193 0 186 1 0 1 1 0 8 0 amappl2 80 2038 0 1972 2 0 2 2 0 8 0 amappl1 72 16674 0 16262 23 14 9 17 0 8 0 amappl 80 788 0 743 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 8 0 4 1 0 1 1 0 8 0 uaddrrnd 24 358 0 343 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 358 0 343 1 0 1 1 0 8 0 vmmpekpl 168 6258 0 6232 2 0 2 2 0 8 0 vmmpepl 168 51072 0 48922 121 20 101 112 0 357 7 vmsppl 272 357 0 343 4 2 2 2 0 8 1 pdppl 4096 722 0 687 6 1 5 6 0 8 0 pvpl 32 169160 0 149464 190 5 185 185 0 265 5 pmappl 200 357 0 343 1 0 1 1 0 8 0 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 262 0 28 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(ffff80001d7956a0,ffff800000655380) at intr_handler+0x4d sys/arch/amd64/amd64/intr.c:537 Xintr_ioapic_edge19_untramp() at Xintr_ioapic_edge19_untramp+0x19f clock_secs_to_ymdhms(fc00000000000000,ffff80001d795818) at clock_secs_to_ymdhms+0x1b3 sys/kern/clock_subr.c:137 rtcsettime(ffffffff8285b470,ffff80001d795868) at rtcsettime+0x9c sys/arch/amd64/isa/clock.c:469 settime(ffff80001d7958d8) at settime+0x116 resettodr sys/kern/kern_time.c:877 [inline] settime(ffff80001d7958d8) at settime+0x116 sys/kern/kern_time.c:102 sys_clock_settime(ffff80001d6a9008,ffff80001d795938,ffff80001d795980) at sys_clock_settime+0xc7 sys/kern/kern_time.c:198 syscall(ffff80001d795a00) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xe2d3096d480, 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(ffff80001d7956a0,ffff800000655380) at intr_handler+0x4d sys/arch/amd64/amd64/intr.c:537 Xintr_ioapic_edge19_untramp() at Xintr_ioapic_edge19_untramp+0x19f clock_secs_to_ymdhms(fc00000000000000,ffff80001d795818) at clock_secs_to_ymdhms+0x1b3 sys/kern/clock_subr.c:137 rtcsettime(ffffffff8285b470,ffff80001d795868) at rtcsettime+0x9c sys/arch/amd64/isa/clock.c:469 settime(ffff80001d7958d8) at settime+0x116 resettodr sys/kern/kern_time.c:877 [inline] settime(ffff80001d7958d8) at settime+0x116 sys/kern/kern_time.c:102 sys_clock_settime(ffff80001d6a9008,ffff80001d795938,ffff80001d795980) at sys_clock_settime+0xc7 sys/kern/kern_time.c:198 syscall(ffff80001d795a00) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xe2d3096d480, count: -11