6~5/oiL{F5AX+RA󋇝Y1IM]*}BGI' Pl 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(0xfffffd8059b12bb8, 0xa, 0, 1) -> e vio_rxeof(ffff80000017a000) at vio_rxeof+0x191 sys/dev/pv/if_vio.c:1018 end trace frame: 0xffff80001d754da0, 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(ffff80001d754e50,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 malloc(10000,7f,1) at malloc+0x44c sys/kern/kern_malloc.c:237 ufs_readdir(ffff80001d755220) at ufs_readdir+0x148 sys/ufs/ufs/ufs_vnops.c:1456 VOP_READDIR(fffffd8054dd3dd8,ffff80001d7552a0,fffffd806c3bf720,ffff80001d7552e4) at VOP_READDIR+0xc6 sys/kern/vfs_vops.c:520 sys_getdents(ffff80001d6aa5f8,ffff80001d755360,ffff80001d7553b0) at sys_getdents+0x21b sys/kern/vfs_syscalls.c:3121 syscall(ffff80001d755430) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7fffffab40, count: -12 ddb> show registers rdi 0xc rsi 0xc rbp 0xffff80001d754d40 rbx 0xffff80000017a000 rdx 0 rcx 0xffff8000001ab000 rax 0 r8 0x2 r9 0 r10 0xffff80001d754f00 r11 0x5fda79c19379375b r12 0xffff80000002ea00 r13 0xc r14 0xfffffd805c6b9200 r15 0 rip 0xffffffff821f3f21 vio_rxeof+0x191 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80001d754cb0 ss 0x10 vio_rxeof+0x191: movzwl 0xa(%r15),%eax ddb> show proc PROC (syz-executor.1) pid=125722 stat=onproc flags process=2 proc=0 pri=63, usrpri=63, nice=20 forw=0xffffffffffffffff, list=0xffff80001d6aa388,0xffff80001d6a94f8 process=0xffff80001d6c5230 user=0xffff80001d750000, vmspace=0xfffffd8059b12bb8 estcpu=36, cpticks=0, pctcpu=0.2 user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 67289 26578 87809 0 2 0x10 syz-executor.0 67289 209905 87809 0 3 0x4000090 netcon2 syz-executor.0 *43401 125722 48628 0 7 0x2 syz-executor.1 42191 489359 0 0 3 0x14200 bored sosplice 87809 261923 48628 0 3 0x82 nanosleep syz-executor.0 48628 520731 79234 0 3 0x82 kqread syz-fuzzer 48628 471505 79234 0 3 0x4000082 nanosleep syz-fuzzer 48628 299133 79234 0 3 0x4000082 thrsleep syz-fuzzer 48628 21021 79234 0 3 0x4000082 thrsleep syz-fuzzer 48628 40699 79234 0 3 0x4000082 thrsleep syz-fuzzer 48628 92703 79234 0 3 0x4000082 thrsleep syz-fuzzer 48628 15925 79234 0 3 0x4000082 thrsleep syz-fuzzer 79234 315442 36999 0 3 0x10008a pause ksh 36999 189442 37399 0 3 0x92 select sshd 37375 351350 1 0 3 0x100083 ttyin getty 37399 396094 1 0 3 0x80 select sshd 58475 334128 87642 73 3 0x100090 kqread syslogd 87642 493299 1 0 3 0x100082 netio syslogd 89153 168762 1 77 3 0x100090 poll dhclient 63090 430688 1 0 3 0x80 poll dhclient 75564 275037 0 0 3 0x14200 bored smr 24535 13965 0 0 2 0x14200 zerothread 27868 457779 0 0 3 0x14200 aiodoned aiodoned 28836 52677 0 0 3 0x14200 syncer update 52919 75588 0 0 3 0x14200 cleaner cleaner 36559 61670 0 0 3 0x14200 reaper reaper 37604 286801 0 0 3 0x14200 pgdaemon pagedaemon 83595 487970 0 0 3 0x14200 bored crynlk 8114 231989 0 0 3 0x14200 bored crypto 34820 162547 0 0 3 0x40014200 acpi0 acpi0 4555 315304 0 0 3 0x14200 bored softnet 55450 104621 0 0 3 0x14200 bored systqmp 67413 123269 0 0 3 0x14200 bored systq 24808 482413 0 0 3 0x40014200 bored softclock 20547 403409 0 0 3 0x40014200 idle0 1 157215 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 9498 6343K 6719K 78643K 11024 0 pcb 13 8K 8K 78643K 63 0 rtable 92 3K 7K 78643K 454 0 ifaddr 74 14K 14K 78643K 177 0 sysctl 2 0K 0K 78643K 2 0 counters 21 16K 16K 78643K 28 0 ioctlops 0 0K 4K 78643K 76 0 iov 0 0K 16K 78643K 40 0 mount 1 1K 1K 78643K 1 0 vnodes 1221 77K 77K 78643K 1396 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 8 0 VM map 2 0K 0K 78643K 2 0 sem 12 0K 0K 78643K 90 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1809 195K 288K 78643K 12938 0 file desc 5 13K 25K 78643K 350 0 proc 49 38K 63K 78643K 460 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 21 0 in_multi 49 3K 3K 78643K 122 0 ether_multi 1 0K 0K 78643K 8 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 37 175K 175K 78643K 37 0 exec 0 0K 1K 78643K 257 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 125 39K 44K 78643K 1700 0 UVM aobj 15 6K 6K 78643K 15 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 18 0 NDP 12 0K 0K 78643K 33 0 temp 103 3917K 3917K 78643K 11908 0 kqueue 3 4K 8K 78643K 20 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 12 0 6 1 0 1 1 0 8 0 rtpcb 80 39 0 37 1 0 1 1 0 8 0 rtentry 112 86 0 50 2 0 2 2 0 8 0 unpcb 120 107 0 99 1 0 1 1 0 8 0 syncache 264 8 0 8 3 2 1 1 0 8 1 tcpqe 32 33 0 33 1 1 0 1 0 8 0 tcpcb 544 353 0 347 1 0 1 1 0 8 0 inpcb 296 534 0 525 3 1 2 2 0 8 1 rttmr 72 3 0 2 1 0 1 1 0 8 0 nd6 48 21 0 15 1 0 1 1 0 8 0 ppxss 1136 4 0 4 2 1 1 1 0 8 1 pfrktable 1344 76 0 76 1 0 1 1 0 8 1 pftag 88 12 0 12 1 0 1 1 0 8 1 pfrule 1360 21 0 14 1 0 1 1 0 8 0 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 360 0 184 15 0 15 15 0 8 2 art_table 32 362 0 184 2 0 2 2 0 8 0 art_node 16 85 0 56 1 0 1 1 0 8 0 sysvmsgpl 40 2 0 2 1 1 0 1 0 8 0 semapl 112 88 0 78 1 0 1 1 0 8 0 shmpl 112 12 0 0 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1829 0 429 88 0 88 88 0 8 0 ffsino 240 1829 0 429 83 0 83 83 0 8 0 nchpl 144 2579 0 990 60 0 60 60 0 8 0 uvmvnodes 72 2015 0 0 37 0 37 37 0 8 0 vnodes 208 2015 0 0 107 0 107 107 0 8 0 namei 1024 6903 0 6903 1 0 1 1 0 8 1 vcpupl 1984 2 0 0 1 0 1 1 0 8 0 vmpool 528 4 0 2 1 0 1 1 0 8 0 pfiaddrpl 120 22 0 22 1 0 1 1 0 8 1 scsiplug 64 1 0 1 1 0 1 1 0 8 1 scxspl 192 7652 0 7652 1 0 1 1 0 8 1 plimitpl 152 28 0 21 1 0 1 1 0 8 0 sigapl 424 531 0 502 4 0 4 4 0 8 0 futexpl 56 6622 0 6622 1 0 1 1 0 8 1 knotepl 112 109 0 90 1 0 1 1 0 8 0 kqueuepl 144 62 0 59 1 0 1 1 0 8 0 pipepl 272 122 0 112 1 0 1 1 0 8 0 fdescpl 432 516 0 502 2 0 2 2 0 8 0 filepl 120 3018 0 2920 5 1 4 5 0 8 0 lockfpl 104 60 0 59 1 0 1 1 0 8 0 lockfspl 48 24 0 23 1 0 1 1 0 8 0 sessionpl 112 19 0 9 1 0 1 1 0 8 0 pgrppl 48 23 0 13 1 0 1 1 0 8 0 ucredpl 96 260 0 252 1 0 1 1 0 8 0 zombiepl 144 502 0 502 1 0 1 1 0 8 1 processpl 928 531 0 502 4 0 4 4 0 8 0 procpl 624 901 0 865 4 0 4 4 0 8 1 sosppl 128 8 0 8 1 0 1 1 0 8 1 sockpl 400 680 0 661 3 0 3 3 0 8 0 mcl64k 65536 15 0 15 1 0 1 1 0 8 1 mcl16k 16384 1 0 1 1 0 1 1 0 8 1 mcl12k 12288 7 0 7 1 0 1 1 0 8 1 mcl9k 9216 4 0 4 2 1 1 1 0 8 1 mcl8k 8192 9 0 9 1 0 1 1 0 8 1 mcl4k 4096 32 0 32 1 0 1 1 0 8 1 mcl2k2 2112 3 0 3 1 1 0 1 0 8 0 mcl2k 2048 93969 0 93922 15 7 8 13 0 8 1 mtagpl 96 19 0 13 2 1 1 1 0 8 0 mbufpl 256 150595 0 150457 17 4 13 15 0 8 2 bufpl 280 4234 0 125 294 0 294 294 0 8 0 anonpl 16 73095 0 56922 81 8 73 79 0 107 6 amapchunkpl 152 2559 0 2429 13 0 13 13 0 158 7 amappl16 192 2400 0 1486 54 6 48 54 0 8 2 amappl15 184 10 0 9 1 0 1 1 0 8 0 amappl14 176 228 0 218 1 0 1 1 0 8 0 amappl13 168 40 0 37 1 0 1 1 0 8 0 amappl12 160 7 0 7 1 1 0 1 0 8 0 amappl11 152 249 0 236 1 0 1 1 0 8 0 amappl10 144 13 0 8 1 0 1 1 0 8 0 amappl9 136 425 0 424 1 0 1 1 0 8 0 amappl8 128 458 0 412 2 0 2 2 0 8 0 amappl7 120 117 0 106 1 0 1 1 0 8 0 amappl6 112 83 0 76 1 0 1 1 0 8 0 amappl5 104 316 0 305 1 0 1 1 0 8 0 amappl4 96 647 0 616 1 0 1 1 0 8 0 amappl3 88 259 0 251 1 0 1 1 0 8 0 amappl2 80 3148 0 3077 2 0 2 2 0 8 0 amappl1 72 20954 0 20519 22 12 10 17 0 8 0 amappl 80 1158 0 1116 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 14 0 0 1 0 1 1 0 8 0 uaddrrnd 24 520 0 504 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 520 0 504 1 0 1 1 0 8 0 vmmpekpl 168 7315 0 7284 2 0 2 2 0 8 0 vmmpepl 168 71456 0 69388 131 6 125 125 0 357 35 vmsppl 272 519 0 504 2 0 2 2 0 8 0 pdppl 4096 1046 0 1010 6 1 5 6 0 8 0 pvpl 32 213279 0 194372 186 6 180 186 0 265 24 pmappl 200 519 0 504 1 0 1 1 0 8 0 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 248 0 14 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(ffff80001d754e50,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 malloc(10000,7f,1) at malloc+0x44c sys/kern/kern_malloc.c:237 ufs_readdir(ffff80001d755220) at ufs_readdir+0x148 sys/ufs/ufs/ufs_vnops.c:1456 VOP_READDIR(fffffd8054dd3dd8,ffff80001d7552a0,fffffd806c3bf720,ffff80001d7552e4) at VOP_READDIR+0xc6 sys/kern/vfs_vops.c:520 sys_getdents(ffff80001d6aa5f8,ffff80001d755360,ffff80001d7553b0) at sys_getdents+0x21b sys/kern/vfs_syscalls.c:3121 syscall(ffff80001d755430) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7fffffab40, 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(ffff80001d754e50,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 malloc(10000,7f,1) at malloc+0x44c sys/kern/kern_malloc.c:237 ufs_readdir(ffff80001d755220) at ufs_readdir+0x148 sys/ufs/ufs/ufs_vnops.c:1456 VOP_READDIR(fffffd8054dd3dd8,ffff80001d7552a0,fffffd806c3bf720,ffff80001d7552e4) at VOP_READDIR+0xc6 sys/kern/vfs_vops.c:520 sys_getdents(ffff80001d6aa5f8,ffff80001d755360,ffff80001d7553b0) at sys_getdents+0x21b sys/kern/vfs_syscalls.c:3121 syscall(ffff80001d755430) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7fffffab40, count: -12