uvm_fault(0xfffffd805788b228, 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(0xfffffd805788b228, 0xa, 0, 1) -> e vio_rxeof(ffff80000017a000) at vio_rxeof+0x191 sys/dev/pv/if_vio.c:1018 end trace frame: 0xffff80001e856cb0, 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(ffff80001e856d60,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 pool_get(ffffffff82812208,1) at pool_get+0x127 sys/kern/subr_pool.c:587 uvm_mapent_alloc(fffffd805788b228,80713) at uvm_mapent_alloc+0x2cf sys/uvm/uvm_map.c:1751 uvm_mapanon(fffffd805788b228,ffff80001e857108,1000,1000,80713) at uvm_mapanon+0x1c7 sys/uvm/uvm_map.c:996 sys_mmap(ffff80001d79d880,ffff80001e8571b8,ffff80001e857200) at sys_mmap+0x993 uvm_mmapanon sys/uvm/uvm_mmap.c:949 [inline] sys_mmap(ffff80001d79d880,ffff80001e8571b8,ffff80001e857200) at sys_mmap+0x993 sys/uvm/uvm_mmap.c:423 syscall(ffff80001e857280) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x708674e09a0, count: -12 ddb> show registers rdi 0xc rsi 0xc rbp 0xffff80001e856c50 rbx 0xffff80000017a000 rdx 0 rcx 0xffff8000001ab000 rax 0 r8 0x2 r9 0x5 r10 0xffff80001e856e10 r11 0xc3346c2dc0d248d2 r12 0xffff80000002ea00 r13 0xc r14 0xfffffd805789e600 r15 0 rip 0xffffffff818c1ac1 vio_rxeof+0x191 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80001e856bc0 ss 0x10 vio_rxeof+0x191: movzwl 0xa(%r15),%eax ddb> show proc PROC (syz-executor.0) pid=101694 stat=onproc flags process=0 proc=4000000 pri=76, usrpri=76, nice=20 forw=0xffffffffffffffff, list=0xffff80001d79daf0,0xffffffff827f75e0 process=0xffff80001e836770 user=0xffff80001e852000, vmspace=0xfffffd805788b228 estcpu=36, cpticks=0, pctcpu=0.0 user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 31589 3893 53586 0 2 0 syz-executor.0 *31589 101694 53586 0 7 0x4000000 syz-executor.0 53586 133948 49388 0 3 0x82 nanosleep syz-executor.0 58051 43719 0 0 3 0x14200 bored sosplice 6509 506600 0 0 3 0x14200 acct acct 53959 216657 0 0 3 0x14280 nfsidl nfsio 15119 351862 0 0 3 0x14280 nfsidl nfsio 5873 226617 0 0 3 0x14280 nfsidl nfsio 24038 12529 0 0 3 0x14280 nfsidl nfsio 91196 422982 0 0 3 0x14280 nfsidl nfsio 73031 373684 0 0 3 0x14280 nfsidl nfsio 60890 148511 0 0 3 0x14280 nfsidl nfsio 92843 251815 0 0 3 0x14280 nfsidl nfsio 48209 198658 0 0 3 0x14280 nfsidl nfsio 5225 501990 0 0 3 0x14280 nfsidl nfsio 35981 273260 0 0 3 0x14280 nfsidl nfsio 65211 356283 0 0 3 0x14280 nfsidl nfsio 3120 271868 0 0 3 0x14280 nfsidl nfsio 52723 11403 0 0 3 0x14280 nfsidl nfsio 76849 84773 0 0 3 0x14280 nfsidl nfsio 52133 292650 0 0 3 0x14280 nfsidl nfsio 88587 223645 0 0 3 0x14280 nfsidl nfsio 74360 245159 0 0 3 0x14280 nfsidl nfsio 65218 297459 0 0 3 0x14280 nfsidl nfsio 29617 290665 0 0 3 0x14280 nfsidl nfsio 90350 515947 49388 0 2 0x2 syz-executor.1 49388 315800 9574 0 3 0x82 thrsleep syz-fuzzer 49388 522702 9574 0 3 0x4000082 nanosleep syz-fuzzer 49388 400857 9574 0 3 0x4000082 thrsleep syz-fuzzer 49388 325247 9574 0 3 0x4000082 thrsleep syz-fuzzer 49388 617 9574 0 3 0x4000082 thrsleep syz-fuzzer 49388 471916 9574 0 3 0x4000082 thrsleep syz-fuzzer 49388 323137 9574 0 3 0x4000082 thrsleep syz-fuzzer 49388 15151 9574 0 3 0x4000082 kqread syz-fuzzer 9574 373867 71425 0 3 0x10008a pause ksh 71425 221267 31695 0 3 0x92 select sshd 56426 413200 1 0 3 0x100083 ttyin getty 31695 375918 1 0 3 0x80 select sshd 30542 161812 59078 73 3 0x100090 kqread syslogd 59078 68399 1 0 3 0x100082 netio syslogd 97402 466587 1 77 3 0x100090 poll dhclient 58272 473870 1 0 3 0x80 poll dhclient 72699 174016 0 0 3 0x14200 bored smr 95647 520712 0 0 2 0x14200 zerothread 70089 367987 0 0 3 0x14200 aiodoned aiodoned 72352 35296 0 0 3 0x14200 syncer update 67547 364058 0 0 3 0x14200 cleaner cleaner 21153 148260 0 0 3 0x14200 reaper reaper 65824 430247 0 0 3 0x14200 pgdaemon pagedaemon 9884 11524 0 0 3 0x14200 bored crynlk 34957 313714 0 0 3 0x14200 bored crypto 53812 33605 0 0 3 0x40014200 acpi0 acpi0 77321 128618 0 0 3 0x14200 bored softnet 33368 385023 0 0 3 0x14200 bored systqmp 65289 391647 0 0 3 0x14200 bored systq 81092 234457 0 0 3 0x40014200 bored softclock 82467 73676 0 0 3 0x40014200 idle0 1 272192 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 9496 6357K 6909K 78643K 11848 0 pcb 13 8K 8K 78643K 121 0 rtable 131 14K 16K 78643K 638 0 ifaddr 78 16K 16K 78643K 207 0 sysctl 2 0K 0K 78643K 2 0 counters 21 16K 16K 78643K 32 0 ioctlops 0 0K 4K 78643K 202 0 iov 0 0K 16K 78643K 86 0 mount 1 1K 1K 78643K 1 0 vnodes 1230 77K 77K 78643K 1973 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 17 0 VM map 2 0K 0K 78643K 2 0 sem 12 0K 0K 78643K 210 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1809 195K 288K 78643K 12938 0 file desc 5 13K 25K 78643K 844 0 sigio 0 0K 0K 78643K 8 0 proc 50 38K 63K 78643K 470 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 47 0 in_multi 33 2K 2K 78643K 146 0 ether_multi 1 0K 0K 78643K 19 0 mrt 0 0K 0K 78643K 10 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 55 254K 254K 78643K 55 0 exec 0 0K 1K 78643K 278 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 137 88K 105K 78643K 2912 0 UVM aobj 47 7K 7K 78643K 48 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 90 0 NDP 11 0K 0K 78643K 39 0 temp 114 3871K 3935K 78643K 10096 0 kqueue 3 4K 12K 78643K 82 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 11 0 5 1 0 1 1 0 8 0 rtpcb 80 51 0 49 1 0 1 1 0 8 0 rtentry 112 103 0 70 2 1 1 2 0 8 0 unpcb 120 257 0 249 1 0 1 1 0 8 0 syncache 264 8 0 8 3 3 0 1 0 8 0 sackhl 24 1 0 1 1 1 0 1 0 8 0 tcpqe 32 169 0 169 1 1 0 1 0 8 0 tcpcb 544 232 0 228 1 0 1 1 0 8 0 ipq 40 1 0 1 1 1 0 1 0 8 0 ipqe 40 45 0 45 1 1 0 1 0 8 0 inpcb 296 771 0 764 4 2 2 2 0 8 1 rttmr 72 5 0 5 3 2 1 1 0 8 1 nd6 48 23 0 18 1 0 1 1 0 8 0 pkpcb 40 4 0 4 2 2 0 1 0 8 0 ppxss 1136 1 0 1 1 1 0 1 0 8 0 pfstscr 40 25 0 24 1 0 1 1 0 8 0 pfrktable 1344 99 0 77 4 2 2 3 0 8 0 pftag 88 26 0 20 1 0 1 1 0 8 0 pfqueue 264 2 0 0 1 0 1 1 0 8 0 pfstitem 24 36 0 34 1 0 1 1 0 8 0 pfstkey 112 38 0 36 1 0 1 1 0 8 0 pfstate 328 19 0 18 1 0 1 1 0 8 0 pfrule 1360 42 0 20 2 0 2 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 549 0 384 20 7 13 14 0 8 2 art_table 32 550 0 384 2 0 2 2 0 8 0 art_node 16 102 0 74 1 0 1 1 0 8 0 sysvmsgpl 40 18 0 6 2 1 1 1 0 8 0 semupl 112 1 0 1 1 1 0 1 0 8 0 semapl 112 204 0 194 1 0 1 1 0 8 0 shmpl 112 45 0 1 2 0 2 2 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 2420 0 1021 88 0 88 88 0 8 0 ffsino 240 2420 0 1021 83 0 83 83 0 8 0 nchpl 144 3723 0 2140 60 0 60 60 0 8 0 uvmvnodes 72 3129 0 0 57 0 57 57 0 8 0 vnodes 208 3129 0 0 165 0 165 165 0 8 0 namei 1024 11081 0 11081 6 5 1 1 0 8 1 vcpupl 1984 6 0 0 1 0 1 1 0 8 0 vmpool 528 8 0 2 1 0 1 1 0 8 0 pfiaddrpl 120 45 0 26 1 0 1 1 0 8 0 scxspl 192 11256 0 11256 3 2 1 1 0 8 1 plimitpl 152 75 0 68 1 0 1 1 0 8 0 sigapl 424 1046 0 996 6 0 6 6 0 8 0 futexpl 56 15422 0 15422 5 4 1 1 0 8 1 knotepl 112 190 0 171 1 0 1 1 0 8 0 kqueuepl 144 556 0 552 1 0 1 1 0 8 0 pipepl 272 181 0 171 2 1 1 2 0 8 0 fdescpl 432 1010 0 996 2 0 2 2 0 8 0 filepl 120 6216 0 6121 4 0 4 4 0 8 1 lockfpl 104 90 0 89 1 0 1 1 0 8 0 lockfspl 48 36 0 35 1 0 1 1 0 8 0 sessionpl 112 19 0 9 1 0 1 1 0 8 0 pgrppl 48 29 0 19 1 0 1 1 0 8 0 ucredpl 96 941 0 934 1 0 1 1 0 8 0 zombiepl 144 996 0 996 2 1 1 1 0 8 1 processpl 928 1046 0 996 7 0 7 7 0 8 0 procpl 624 2019 0 1961 6 1 5 6 0 8 0 sosppl 128 10 0 10 3 3 0 1 0 8 0 sockpl 400 1083 0 1066 7 4 3 4 0 8 1 mcl64k 65536 157 0 157 18 17 1 15 0 8 1 mcl16k 16384 2 0 2 2 2 0 1 0 8 0 mcl12k 12288 17 0 17 6 5 1 1 0 8 1 mcl9k 9216 10 0 10 5 4 1 1 0 8 1 mcl8k 8192 23 0 23 4 4 0 1 0 8 0 mcl4k 4096 65 0 65 5 4 1 1 0 8 1 mcl2k2 2112 2 0 2 1 1 0 1 0 8 0 mcl2k 2048 93009 0 92956 25 17 8 18 0 8 1 mtagpl 96 63 0 34 3 2 1 2 0 8 0 mbufpl 256 151417 0 151154 36 16 20 22 0 8 0 bufpl 280 5417 0 124 379 0 379 379 0 8 0 anonpl 16 149431 0 133725 108 38 70 85 0 107 0 amapchunkpl 152 4323 0 4185 15 8 7 13 0 158 0 amappl16 192 7182 0 6209 91 34 57 61 0 8 8 amappl15 184 1 0 0 1 0 1 1 0 8 0 amappl14 176 113 0 107 1 0 1 1 0 8 0 amappl13 168 40 0 37 1 0 1 1 0 8 0 amappl12 160 17 0 16 2 1 1 1 0 8 0 amappl11 152 452 0 442 1 0 1 1 0 8 0 amappl10 144 15 0 8 1 0 1 1 0 8 0 amappl9 136 706 0 703 1 0 1 1 0 8 0 amappl8 128 702 0 655 2 0 2 2 0 8 0 amappl7 120 118 0 105 1 0 1 1 0 8 0 amappl6 112 401 0 396 1 0 1 1 0 8 0 amappl5 104 914 0 902 1 0 1 1 0 8 0 amappl4 96 469 0 445 1 0 1 1 0 8 0 amappl3 88 210 0 202 1 0 1 1 0 8 0 amappl2 80 7128 0 7060 2 0 2 2 0 8 0 amappl1 72 31638 0 31217 23 13 10 17 0 8 0 amappl 80 2265 0 2218 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 47 0 1 1 0 1 1 0 8 0 uaddrrnd 24 1018 0 998 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1018 0 998 1 0 1 1 0 8 0 vmmpekpl 168 9768 0 9736 3 1 2 2 0 8 0 vmmpepl 168 133101 0 131000 170 50 120 130 0 357 26 vmsppl 272 1017 0 998 2 0 2 2 0 8 0 pdppl 4096 2042 0 2002 7 1 6 6 0 8 0 pvpl 32 380999 0 362448 230 55 175 195 0 265 8 pmappl 200 1017 0 998 2 0 2 2 0 8 0 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 320 0 81 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(ffff80001e856d60,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 pool_get(ffffffff82812208,1) at pool_get+0x127 sys/kern/subr_pool.c:587 uvm_mapent_alloc(fffffd805788b228,80713) at uvm_mapent_alloc+0x2cf sys/uvm/uvm_map.c:1751 uvm_mapanon(fffffd805788b228,ffff80001e857108,1000,1000,80713) at uvm_mapanon+0x1c7 sys/uvm/uvm_map.c:996 sys_mmap(ffff80001d79d880,ffff80001e8571b8,ffff80001e857200) at sys_mmap+0x993 uvm_mmapanon sys/uvm/uvm_mmap.c:949 [inline] sys_mmap(ffff80001d79d880,ffff80001e8571b8,ffff80001e857200) at sys_mmap+0x993 sys/uvm/uvm_mmap.c:423 syscall(ffff80001e857280) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x708674e09a0, 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(ffff80001e856d60,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 pool_get(ffffffff82812208,1) at pool_get+0x127 sys/kern/subr_pool.c:587 uvm_mapent_alloc(fffffd805788b228,80713) at uvm_mapent_alloc+0x2cf sys/uvm/uvm_map.c:1751 uvm_mapanon(fffffd805788b228,ffff80001e857108,1000,1000,80713) at uvm_mapanon+0x1c7 sys/uvm/uvm_map.c:996 sys_mmap(ffff80001d79d880,ffff80001e8571b8,ffff80001e857200) at sys_mmap+0x993 uvm_mmapanon sys/uvm/uvm_mmap.c:949 [inline] sys_mmap(ffff80001d79d880,ffff80001e8571b8,ffff80001e857200) at sys_mmap+0x993 sys/uvm/uvm_mmap.c:423 syscall(ffff80001e857280) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x708674e09a0, count: -12