uvm_fault(0xfffffd80627d4668, 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(0xfffffd80627d4668, 0xa, 0, 1) -> e vio_rxeof(ffff80000017a000) at vio_rxeof+0x191 sys/dev/pv/if_vio.c:1018 end trace frame: 0xffff80001e7aac20, 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(ffff80001e7aacd0,ffff800000655380) at intr_handler+0x4d sys/arch/amd64/amd64/intr.c:537 Xintr_ioapic_edge19_untramp() at Xintr_ioapic_edge19_untramp+0x19f __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x6d sys/dev/kcov.c:84 uvm_addr_invoke(fffffd80627d4668,fffffd806c3bcde0,ffff80001e7aafe0,ffff80001e7aafe8,ffff80001e7ab138,1000) at uvm_addr_invoke+0x13e sys/uvm/uvm_addr.c:412 uvm_map_findspace(fffffd80627d4668,ffff80001e7aafe0,ffff80001e7aafe8,ffff80001e7ab138,1000,1000) at uvm_map_findspace+0x8e sys/uvm/uvm_map.c:880 uvm_mapanon(fffffd80627d4668,ffff80001e7ab138,1000,1000,80713) at uvm_mapanon+0x4fb sys/uvm/uvm_map.c:1043 sys_mmap(ffff80001d6a9278,ffff80001e7ab1e8,ffff80001e7ab230) at sys_mmap+0x993 uvm_mmapanon sys/uvm/uvm_mmap.c:949 [inline] sys_mmap(ffff80001d6a9278,ffff80001e7ab1e8,ffff80001e7ab230) at sys_mmap+0x993 sys/uvm/uvm_mmap.c:423 syscall(ffff80001e7ab2b0) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xd424e11d7e0, count: -12 ddb> show registers rdi 0xc rsi 0xc rbp 0xffff80001e7aabc0 rbx 0xffff80000017a000 rdx 0 rcx 0xffff8000001ab000 rax 0 r8 0x2 r9 0 r10 0 r11 0x83ada5cf9e39ef17 r12 0xffff80000002ea00 r13 0xc r14 0xfffffd8058cb1b00 r15 0 rip 0xffffffff8144b091 vio_rxeof+0x191 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80001e7aab30 ss 0x10 vio_rxeof+0x191: movzwl 0xa(%r15),%eax ddb> show proc PROC (syz-executor.1) pid=266552 stat=onproc flags process=0 proc=4000000 pri=50, usrpri=56, nice=20 forw=0xffffffffffffffff, list=0xffff80001d6aa118,0xffffffff82829c20 process=0xffff80001d766030 user=0xffff80001e7a6000, vmspace=0xfffffd80627d4668 estcpu=6, cpticks=1, pctcpu=0.0 user=0, sys=0, intr=1 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 60759 73717 67797 0 2 0 syz-executor.1 *60759 266552 67797 0 7 0x4000000 syz-executor.1 67797 344749 76180 0 3 0x82 nanosleep syz-executor.1 57965 83841 0 0 3 0x14200 acct acct 55852 98334 1 0 3 0x100083 ttyin getty 59179 50723 0 0 3 0x14200 bored sosplice 74110 486180 0 0 3 0x14280 nfsidl nfsio 76443 224351 0 0 3 0x14280 nfsidl nfsio 84375 265294 0 0 3 0x14280 nfsidl nfsio 81935 424155 0 0 3 0x14280 nfsidl nfsio 46304 254043 0 0 3 0x14280 nfsidl nfsio 38826 461526 0 0 3 0x14280 nfsidl nfsio 51495 402104 0 0 3 0x14280 nfsidl nfsio 34553 412399 0 0 3 0x14280 nfsidl nfsio 86516 198806 0 0 3 0x14280 nfsidl nfsio 3334 249017 0 0 3 0x14280 nfsidl nfsio 38071 169892 0 0 3 0x14280 nfsidl nfsio 10043 483343 0 0 3 0x14280 nfsidl nfsio 39633 192544 0 0 3 0x14280 nfsidl nfsio 34963 516798 0 0 3 0x14280 nfsidl nfsio 72507 494178 0 0 3 0x14280 nfsidl nfsio 78535 498112 0 0 3 0x14280 nfsidl nfsio 48051 520577 0 0 3 0x14280 nfsidl nfsio 37766 226436 0 0 3 0x14280 nfsidl nfsio 50124 521737 0 0 3 0x14280 nfsidl nfsio 40532 11671 0 0 3 0x14280 nfsidl nfsio 63151 304087 76180 0 2 0x2 syz-executor.0 76180 510514 78168 0 3 0x82 thrsleep syz-fuzzer 76180 367332 78168 0 3 0x4000082 nanosleep syz-fuzzer 76180 280077 78168 0 3 0x4000082 thrsleep syz-fuzzer 76180 363436 78168 0 3 0x4000082 thrsleep syz-fuzzer 76180 179997 78168 0 3 0x4000082 thrsleep syz-fuzzer 76180 217724 78168 0 2 0x4000002 syz-fuzzer 76180 417347 78168 0 3 0x4000082 thrsleep syz-fuzzer 76180 398618 78168 0 3 0x4000082 thrsleep syz-fuzzer 78168 191982 15371 0 3 0x10008a pause ksh 15371 355136 74571 0 2 0x12 sshd 74571 411070 1 0 3 0x80 select sshd 81989 262592 81569 73 3 0x100090 kqread syslogd 81569 279325 1 0 3 0x100082 netio syslogd 23712 390256 1 77 3 0x100090 poll dhclient 1750 435004 1 0 3 0x80 poll dhclient 41110 6077 0 0 3 0x14200 bored smr 61230 393372 0 0 2 0x14200 zerothread 50521 217539 0 0 3 0x14200 aiodoned aiodoned 72415 193633 0 0 3 0x14200 syncer update 3823 211229 0 0 3 0x14200 cleaner cleaner 24059 13181 0 0 3 0x14200 reaper reaper 99551 85710 0 0 3 0x14200 pgdaemon pagedaemon 32761 134172 0 0 3 0x14200 bored crynlk 93054 105496 0 0 3 0x14200 bored crypto 54932 329899 0 0 3 0x40014200 acpi0 acpi0 48763 517182 0 0 3 0x14200 bored softnet 79997 353123 0 0 3 0x14200 bored systqmp 80730 154817 0 0 3 0x14200 bored systq 84898 58864 0 0 3 0x40014200 bored softclock 11315 52687 0 0 3 0x40014200 idle0 1 441026 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 9497 6463K 7102K 78643K 11272 0 pcb 13 8K 8K 78643K 57 0 rtable 120 5K 9K 78643K 502 0 ifaddr 65 13K 14K 78643K 132 0 sysctl 2 0K 0K 78643K 2 0 counters 21 16K 16K 78643K 24 0 ioctlops 0 0K 4K 78643K 43 0 iov 0 0K 16K 78643K 137 0 mount 1 1K 1K 78643K 1 0 vnodes 1223 77K 77K 78643K 1427 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 6 0 VM map 2 0K 0K 78643K 2 0 sem 12 0K 0K 78643K 50 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1809 195K 288K 78643K 12938 0 file desc 5 13K 25K 78643K 284 0 sigio 0 0K 0K 78643K 4 0 proc 49 38K 55K 78643K 475 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 17 0 in_multi 44 2K 2K 78643K 91 0 ether_multi 1 0K 0K 78643K 9 0 mrt 0 0K 0K 78643K 4 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 230 0 pfkey data 0 0K 0K 78643K 4 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 133 55K 64K 78643K 1544 0 UVM aobj 29 4K 4K 78643K 31 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 38 0 NDP 10 0K 0K 78643K 23 0 temp 98 3857K 3921K 78643K 5263 0 kqueue 3 4K 10K 78643K 8 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 10 0 4 1 0 1 1 0 8 0 rtpcb 80 39 0 37 1 0 1 1 0 8 0 rtentry 112 81 0 33 2 0 2 2 0 8 0 unpcb 120 115 0 107 1 0 1 1 0 8 0 syncache 264 6 0 6 2 2 0 1 0 8 0 tcpqe 32 123 0 123 1 1 0 1 0 8 0 tcpcb 544 88 0 84 1 0 1 1 0 8 0 inpcb 296 257 0 250 2 0 2 2 0 8 1 rttmr 72 2 0 2 1 1 0 1 0 8 0 nd6 48 17 0 9 1 0 1 1 0 8 0 pkpcb 40 89 0 89 1 0 1 1 0 8 1 ppxss 1136 1 0 1 1 1 0 1 0 8 0 pfrktable 1344 83 0 81 1 0 1 1 0 8 0 pftag 88 18 0 18 2 1 1 1 0 8 1 pfrule 1360 16 0 14 1 0 1 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 386 0 171 15 1 14 14 0 8 0 art_table 32 387 0 171 2 0 2 2 0 8 0 art_node 16 80 0 37 1 0 1 1 0 8 0 sysvmsgpl 40 4 0 1 1 0 1 1 0 8 0 semupl 112 4 0 4 1 1 0 1 0 8 0 semapl 112 44 0 34 1 0 1 1 0 8 0 shmpl 112 28 0 2 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1725 0 326 88 0 88 88 0 8 0 ffsino 240 1725 0 326 83 0 83 83 0 8 0 nchpl 144 2315 0 722 60 0 60 60 0 8 0 uvmvnodes 72 1945 0 0 36 0 36 36 0 8 0 vnodes 208 1945 0 0 103 0 103 103 0 8 0 namei 1024 6392 0 6392 1 0 1 1 0 8 1 vcpupl 1984 4 0 0 1 0 1 1 0 8 0 vmpool 528 4 0 0 1 0 1 1 0 8 0 pfiaddrpl 120 26 0 24 1 0 1 1 0 8 0 scxspl 192 6547 0 6547 1 0 1 1 0 8 1 plimitpl 152 37 0 30 1 0 1 1 0 8 0 sigapl 424 487 0 437 6 0 6 6 0 8 0 futexpl 56 5035 0 5035 1 0 1 1 0 8 1 knotepl 112 91 0 72 1 0 1 1 0 8 0 kqueuepl 144 20 0 18 1 0 1 1 0 8 0 pipepl 272 108 0 98 1 0 1 1 0 8 0 fdescpl 432 451 0 437 2 0 2 2 0 8 0 filepl 120 2610 0 2515 4 0 4 4 0 8 1 lockfpl 104 54 0 53 1 0 1 1 0 8 0 lockfspl 48 21 0 20 1 0 1 1 0 8 0 sessionpl 112 20 0 10 1 0 1 1 0 8 0 pgrppl 48 22 0 12 1 0 1 1 0 8 0 ucredpl 96 208 0 201 1 0 1 1 0 8 0 zombiepl 144 437 0 437 1 0 1 1 0 8 1 processpl 928 487 0 437 7 0 7 7 0 8 0 procpl 624 764 0 706 5 0 5 5 0 8 0 sosppl 128 2 0 2 1 0 1 1 0 8 1 sockpl 400 503 0 486 3 0 3 3 0 8 1 mcl64k 65536 20 0 20 1 0 1 1 0 8 1 mcl16k 16384 4 0 4 1 0 1 1 0 8 1 mcl12k 12288 5 0 5 2 1 1 1 0 8 1 mcl9k 9216 2 0 2 1 1 0 1 0 8 0 mcl8k 8192 7 0 7 1 0 1 1 0 8 1 mcl4k 4096 31 0 31 2 1 1 1 0 8 1 mcl2k2 2112 4 0 3 2 1 1 1 0 8 0 mcl2k 2048 92802 0 92756 21 14 7 18 0 8 0 mtagpl 96 17 0 9 2 1 1 1 0 8 0 mbufpl 256 148211 0 148057 14 3 11 11 0 8 0 bufpl 280 3708 0 129 256 0 256 256 0 8 0 anonpl 16 67481 0 52195 87 11 76 85 0 107 7 amapchunkpl 152 2423 0 2277 13 2 11 11 0 158 5 amappl16 192 2061 0 1149 54 8 46 54 0 8 0 amappl15 184 1 0 0 1 0 1 1 0 8 0 amappl14 176 34 0 26 1 0 1 1 0 8 0 amappl13 168 96 0 93 1 0 1 1 0 8 0 amappl12 160 177 0 174 2 1 1 1 0 8 0 amappl11 152 101 0 91 1 0 1 1 0 8 0 amappl10 144 12 0 7 1 0 1 1 0 8 0 amappl9 136 388 0 384 1 0 1 1 0 8 0 amappl8 128 374 0 330 2 0 2 2 0 8 0 amappl7 120 123 0 110 1 0 1 1 0 8 0 amappl6 112 64 0 61 1 0 1 1 0 8 0 amappl5 104 495 0 482 1 0 1 1 0 8 0 amappl4 96 460 0 434 1 0 1 1 0 8 0 amappl3 88 107 0 102 1 0 1 1 0 8 0 amappl2 80 2704 0 2637 2 0 2 2 0 8 0 amappl1 72 19402 0 18985 23 13 10 17 0 8 0 amappl 80 998 0 954 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 30 0 2 1 0 1 1 0 8 0 uaddrrnd 24 455 0 437 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 455 0 437 1 0 1 1 0 8 0 vmmpekpl 168 6813 0 6776 2 0 2 2 0 8 0 vmmpepl 168 63488 0 61467 134 9 125 125 0 357 32 vmsppl 272 454 0 437 2 0 2 2 0 8 0 pdppl 4096 916 0 878 7 1 6 6 0 8 0 pvpl 32 197685 0 179279 199 9 190 199 0 265 28 pmappl 200 454 0 437 1 0 1 1 0 8 0 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 253 0 22 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(ffff80001e7aacd0,ffff800000655380) at intr_handler+0x4d sys/arch/amd64/amd64/intr.c:537 Xintr_ioapic_edge19_untramp() at Xintr_ioapic_edge19_untramp+0x19f __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x6d sys/dev/kcov.c:84 uvm_addr_invoke(fffffd80627d4668,fffffd806c3bcde0,ffff80001e7aafe0,ffff80001e7aafe8,ffff80001e7ab138,1000) at uvm_addr_invoke+0x13e sys/uvm/uvm_addr.c:412 uvm_map_findspace(fffffd80627d4668,ffff80001e7aafe0,ffff80001e7aafe8,ffff80001e7ab138,1000,1000) at uvm_map_findspace+0x8e sys/uvm/uvm_map.c:880 uvm_mapanon(fffffd80627d4668,ffff80001e7ab138,1000,1000,80713) at uvm_mapanon+0x4fb sys/uvm/uvm_map.c:1043 sys_mmap(ffff80001d6a9278,ffff80001e7ab1e8,ffff80001e7ab230) at sys_mmap+0x993 uvm_mmapanon sys/uvm/uvm_mmap.c:949 [inline] sys_mmap(ffff80001d6a9278,ffff80001e7ab1e8,ffff80001e7ab230) at sys_mmap+0x993 sys/uvm/uvm_mmap.c:423 syscall(ffff80001e7ab2b0) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xd424e11d7e0, 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(ffff80001e7aacd0,ffff800000655380) at intr_handler+0x4d sys/arch/amd64/amd64/intr.c:537 Xintr_ioapic_edge19_untramp() at Xintr_ioapic_edge19_untramp+0x19f __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x6d sys/dev/kcov.c:84 uvm_addr_invoke(fffffd80627d4668,fffffd806c3bcde0,ffff80001e7aafe0,ffff80001e7aafe8,ffff80001e7ab138,1000) at uvm_addr_invoke+0x13e sys/uvm/uvm_addr.c:412 uvm_map_findspace(fffffd80627d4668,ffff80001e7aafe0,ffff80001e7aafe8,ffff80001e7ab138,1000,1000) at uvm_map_findspace+0x8e sys/uvm/uvm_map.c:880 uvm_mapanon(fffffd80627d4668,ffff80001e7ab138,1000,1000,80713) at uvm_mapanon+0x4fb sys/uvm/uvm_map.c:1043 sys_mmap(ffff80001d6a9278,ffff80001e7ab1e8,ffff80001e7ab230) at sys_mmap+0x993 uvm_mmapanon sys/uvm/uvm_mmap.c:949 [inline] sys_mmap(ffff80001d6a9278,ffff80001e7ab1e8,ffff80001e7ab230) at sys_mmap+0x993 sys/uvm/uvm_mmap.c:423 syscall(ffff80001e7ab2b0) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xd424e11d7e0, count: -12