uvm_fault(0xfffffd806bc09110, 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(0xfffffd806bc09110, 0xa, 0, 1) -> e vio_rxeof(ffff80000017a000) at vio_rxeof+0x191 sys/dev/pv/if_vio.c:1018 end trace frame: 0xffff80001d787440, 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(ffff80001d7874f0,ffff800000655380) at intr_handler+0x4d sys/arch/amd64/amd64/intr.c:537 Xintr_ioapic_edge19_untramp() at Xintr_ioapic_edge19_untramp+0x19f VOP_STRATEGY(fffffd805df048d0) at VOP_STRATEGY+0x20 sys/kern/vfs_vops.c:702 bwrite(fffffd805df048d0) at bwrite+0x1e2 sys/kern/vfs_bio.c:762 ffs_update(fffffd805ca27c30,1) at ffs_update+0x2c2 sys/ufs/ffs/ffs_inode.c:113 ufs_mkdir(ffff80001d787860) at ufs_mkdir+0x42e sys/ufs/ufs/ufs_vnops.c:1197 VOP_MKDIR(fffffd805aa69c50,ffff80001d7879c0,ffff80001d787a10,ffff80001d7878f0) at VOP_MKDIR+0xc6 sys/kern/vfs_vops.c:450 domkdirat(ffff80001d6aa868,ffffff9c,7f7ffffce790,1ff) at domkdirat+0x121 sys/kern/vfs_syscalls.c:3051 syscall(ffff80001d787b90) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffce800, count: -13 ddb> show registers rdi 0xc rsi 0xc rbp 0xffff80001d7873e0 rbx 0xffff80000017a000 rdx 0 rcx 0xffff8000001ab000 rax 0 r8 0x2 r9 0 r10 0 r11 0xc684a6353f35cdd4 r12 0xffff80000002ea00 r13 0xc r14 0xfffffd806bc22f00 r15 0 rip 0xffffffff81127dc1 vio_rxeof+0x191 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80001d787350 ss 0x10 vio_rxeof+0x191: movzwl 0xa(%r15),%eax ddb> show proc PROC (syz-executor.1) pid=138961 stat=onproc flags process=2 proc=0 pri=17, usrpri=75, nice=20 forw=0xffffffffffffffff, list=0xffff80001d6aa5f8,0xffff80001d6c2780 process=0xffff80001d6c4af0 user=0xffff80001d782000, vmspace=0xfffffd806bc09110 estcpu=36, cpticks=1, pctcpu=0.2 user=0, sys=0, intr=1 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 44545 327053 10693 0 2 0x2 syz-executor.0 606 160112 0 0 3 0x14280 nfsidl nfsio 71496 461075 0 0 3 0x14280 nfsidl nfsio 40959 194436 0 0 3 0x14280 nfsidl nfsio 62276 55231 0 0 3 0x14280 nfsidl nfsio 6680 146666 0 0 3 0x14280 nfsidl nfsio 86770 134614 0 0 3 0x14280 nfsidl nfsio 43489 59531 0 0 3 0x14280 nfsidl nfsio 14947 397517 0 0 3 0x14280 nfsidl nfsio 53021 423852 0 0 3 0x14280 nfsidl nfsio 7114 293288 0 0 3 0x14280 nfsidl nfsio 82917 390844 0 0 3 0x14280 nfsidl nfsio 47861 112759 0 0 3 0x14280 nfsidl nfsio 47640 408412 0 0 3 0x14280 nfsidl nfsio 8908 143553 0 0 3 0x14280 nfsidl nfsio 44126 471251 0 0 3 0x14280 nfsidl nfsio 89927 362527 0 0 3 0x14280 nfsidl nfsio 20222 203975 0 0 3 0x14280 nfsidl nfsio 38348 444089 0 0 3 0x14280 nfsidl nfsio 87032 32839 0 0 3 0x14280 nfsidl nfsio 58777 75848 0 0 3 0x14280 nfsidl nfsio 16996 260059 0 0 3 0x14200 bored sosplice *95001 138961 10693 0 7 0x2 syz-executor.1 10693 230258 56869 0 3 0x82 thrsleep syz-fuzzer 10693 328807 56869 0 2 0x4000002 syz-fuzzer 10693 460673 56869 0 3 0x4000082 thrsleep syz-fuzzer 10693 320412 56869 0 3 0x4000082 thrsleep syz-fuzzer 10693 2363 56869 0 3 0x4000082 thrsleep syz-fuzzer 10693 194060 56869 0 2 0x4000002 syz-fuzzer 10693 165993 56869 0 3 0x4000082 thrsleep syz-fuzzer 10693 424125 56869 0 3 0x4000082 thrsleep syz-fuzzer 56869 521559 7622 0 3 0x10008a pause ksh 7622 506071 9025 0 2 0x12 sshd 65762 435562 1 0 3 0x100083 ttyin getty 9025 292084 1 0 3 0x80 select sshd 62767 21179 85438 73 3 0x100090 kqread syslogd 85438 221172 1 0 3 0x100082 netio syslogd 60830 478221 1 77 3 0x100090 poll dhclient 66170 476420 1 0 3 0x80 poll dhclient 58488 69135 0 0 3 0x14200 bored smr 36851 488616 0 0 3 0x14200 pgzero zerothread 55465 226837 0 0 3 0x14200 aiodoned aiodoned 88293 216692 0 0 3 0x14200 syncer update 86217 261360 0 0 3 0x14200 cleaner cleaner 91434 480910 0 0 3 0x14200 reaper reaper 58431 354144 0 0 3 0x14200 pgdaemon pagedaemon 31392 387879 0 0 3 0x14200 bored crynlk 46618 322861 0 0 3 0x14200 bored crypto 99144 80287 0 0 3 0x40014200 acpi0 acpi0 19547 257308 0 0 3 0x14200 bored softnet 54237 436965 0 0 3 0x14200 bored systqmp 77042 396723 0 0 3 0x14200 bored systq 27948 151589 0 0 3 0x40014200 bored softclock 59927 198317 0 0 3 0x40014200 idle0 1 398808 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 9508 6473K 6925K 78643K 11262 0 pcb 13 8K 8K 78643K 53 0 rtable 112 6K 9K 78643K 456 0 ifaddr 71 14K 15K 78643K 132 0 counters 21 16K 16K 78643K 25 0 ioctlops 0 0K 4K 78643K 76 0 iov 0 0K 16K 78643K 48 0 mount 1 1K 1K 78643K 1 0 vnodes 1224 77K 77K 78643K 1430 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 69 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1809 195K 288K 78643K 12938 0 file desc 4 9K 25K 78643K 427 0 sigio 0 0K 0K 78643K 2 0 proc 49 38K 55K 78643K 457 0 subproc 32 2K 2K 78643K 55 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 43 0 in_multi 35 2K 2K 78643K 104 0 ether_multi 1 0K 0K 78643K 10 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 234 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 121 39K 55K 78643K 1821 0 UVM aobj 14 2K 2K 78643K 25 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 39 0 NDP 12 0K 0K 78643K 26 0 temp 97 3852K 3931K 78643K 8688 0 kqueue 3 4K 8K 78643K 13 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 5 1 0 1 1 0 8 0 rtpcb 80 41 0 39 1 0 1 1 0 8 0 rtentry 112 78 0 39 2 0 2 2 0 8 0 unpcb 120 183 0 175 1 0 1 1 0 8 0 syncache 264 8 0 8 3 2 1 1 0 8 1 tcpqe 32 367 0 367 2 1 1 1 0 8 1 tcpcb 544 190 0 183 3 0 3 3 0 8 1 ipq 40 2 0 2 1 0 1 1 0 8 1 ipqe 40 4 0 4 1 0 1 1 0 8 1 inpcb 296 409 0 401 2 0 2 2 0 8 1 nd6 48 17 0 12 1 0 1 1 0 8 0 pkpcb 40 4 0 4 1 1 0 1 0 8 0 ppxss 1136 1 0 1 1 1 0 1 0 8 0 pfstscr 40 4 0 3 1 0 1 1 0 8 0 pfrktable 1344 52 0 48 1 0 1 1 0 8 0 pftag 88 9 0 8 1 0 1 1 0 8 0 pfqueue 264 2 0 2 1 1 0 1 0 8 0 pfstitem 24 2 0 0 1 0 1 1 0 8 0 pfstkey 112 12 0 10 2 1 1 1 0 8 0 pfstate 328 6 0 5 2 1 1 1 0 8 0 pfrule 1360 18 0 10 1 0 1 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 344 0 131 14 0 14 14 0 8 0 art_table 32 345 0 131 2 0 2 2 0 8 0 art_node 16 77 0 41 1 0 1 1 0 8 0 sysvmsgpl 40 4 0 0 1 0 1 1 0 8 0 semupl 112 2 0 2 2 2 0 1 0 8 0 semapl 112 67 0 57 1 0 1 1 0 8 0 shmpl 112 22 0 11 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1917 0 516 88 0 88 88 0 8 0 ffsino 240 1917 0 516 83 0 83 83 0 8 0 nchpl 144 2877 0 1300 60 0 60 60 0 8 0 uvmvnodes 72 2129 0 0 39 0 39 39 0 8 0 vnodes 208 2129 0 0 113 0 113 113 0 8 0 namei 1024 7586 0 7585 2 1 1 1 0 8 0 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 18 0 14 1 0 1 1 0 8 0 scxspl 192 7924 0 7924 1 0 1 1 0 8 1 plimitpl 152 37 0 30 1 0 1 1 0 8 0 sigapl 424 633 0 585 6 0 6 6 0 8 0 futexpl 56 7700 0 7700 2 1 1 1 0 8 1 knotepl 112 85 0 66 1 0 1 1 0 8 0 kqueuepl 144 34 0 32 1 0 1 1 0 8 0 pipepl 272 123 0 113 1 0 1 1 0 8 0 fdescpl 432 596 0 583 2 0 2 2 0 8 0 filepl 120 3296 0 3201 4 0 4 4 0 8 1 lockfpl 104 90 0 89 1 0 1 1 0 8 0 lockfspl 48 33 0 32 1 0 1 1 0 8 0 sessionpl 112 18 0 8 1 0 1 1 0 8 0 pgrppl 48 24 0 14 1 0 1 1 0 8 0 ucredpl 96 318 0 311 1 0 1 1 0 8 0 zombiepl 144 585 0 585 2 1 1 1 0 8 1 processpl 928 633 0 585 7 0 7 7 0 8 0 procpl 624 1073 0 1018 6 1 5 5 0 8 0 sosppl 128 2 0 2 1 1 0 1 0 8 0 sockpl 400 640 0 622 4 1 3 3 0 8 1 mcl64k 65536 13 0 13 3 2 1 1 0 8 1 mcl16k 16384 1 0 1 1 0 1 1 0 8 1 mcl12k 12288 10 0 10 2 1 1 1 0 8 1 mcl9k 9216 4 0 4 2 1 1 1 0 8 1 mcl8k 8192 12 0 12 1 0 1 1 0 8 1 mcl4k 4096 33 0 33 3 2 1 1 0 8 1 mcl2k2 2112 3 0 3 1 0 1 1 0 8 1 mcl2k 2048 92567 0 92510 16 8 8 15 0 8 0 mtagpl 96 22 0 18 2 1 1 1 0 8 0 mbufpl 256 148060 0 147959 13 0 13 13 0 8 4 bufpl 280 4132 0 125 287 0 287 287 0 8 0 anonpl 16 69816 0 53096 75 3 72 74 0 107 4 amapchunkpl 152 2836 0 2713 15 7 8 15 0 158 1 amappl16 192 2698 0 1781 47 0 47 47 0 8 1 amappl15 184 10 0 9 1 0 1 1 0 8 0 amappl14 176 28 0 21 1 0 1 1 0 8 0 amappl13 168 33 0 30 1 0 1 1 0 8 0 amappl12 160 83 0 80 1 0 1 1 0 8 0 amappl11 152 58 0 48 1 0 1 1 0 8 0 amappl10 144 17 0 12 1 0 1 1 0 8 0 amappl9 136 681 0 679 1 0 1 1 0 8 0 amappl8 128 475 0 427 2 0 2 2 0 8 0 amappl7 120 113 0 100 1 0 1 1 0 8 0 amappl6 112 26 0 21 1 0 1 1 0 8 0 amappl5 104 598 0 588 1 0 1 1 0 8 0 amappl4 96 442 0 410 1 0 1 1 0 8 0 amappl3 88 125 0 118 1 0 1 1 0 8 0 amappl2 80 3871 0 3815 2 0 2 2 0 8 0 amappl1 72 22176 0 21774 23 13 10 17 0 8 0 amappl 80 1310 0 1272 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 24 0 11 1 0 1 1 0 8 0 uaddrrnd 24 600 0 585 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 600 0 585 1 0 1 1 0 8 0 vmmpekpl 168 7680 0 7647 2 0 2 2 0 8 0 vmmpepl 168 79459 0 77539 154 31 123 148 0 357 32 vmsppl 272 599 0 585 3 1 2 2 0 8 0 pdppl 4096 1206 0 1172 6 1 5 6 0 8 0 pvpl 32 210644 0 190926 180 4 176 178 0 265 15 pmappl 200 599 0 585 1 0 1 1 0 8 0 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 254 0 19 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(ffff80001d7874f0,ffff800000655380) at intr_handler+0x4d sys/arch/amd64/amd64/intr.c:537 Xintr_ioapic_edge19_untramp() at Xintr_ioapic_edge19_untramp+0x19f VOP_STRATEGY(fffffd805df048d0) at VOP_STRATEGY+0x20 sys/kern/vfs_vops.c:702 bwrite(fffffd805df048d0) at bwrite+0x1e2 sys/kern/vfs_bio.c:762 ffs_update(fffffd805ca27c30,1) at ffs_update+0x2c2 sys/ufs/ffs/ffs_inode.c:113 ufs_mkdir(ffff80001d787860) at ufs_mkdir+0x42e sys/ufs/ufs/ufs_vnops.c:1197 VOP_MKDIR(fffffd805aa69c50,ffff80001d7879c0,ffff80001d787a10,ffff80001d7878f0) at VOP_MKDIR+0xc6 sys/kern/vfs_vops.c:450 domkdirat(ffff80001d6aa868,ffffff9c,7f7ffffce790,1ff) at domkdirat+0x121 sys/kern/vfs_syscalls.c:3051 syscall(ffff80001d787b90) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffce800, count: -13 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(ffff80001d7874f0,ffff800000655380) at intr_handler+0x4d sys/arch/amd64/amd64/intr.c:537 Xintr_ioapic_edge19_untramp() at Xintr_ioapic_edge19_untramp+0x19f VOP_STRATEGY(fffffd805df048d0) at VOP_STRATEGY+0x20 sys/kern/vfs_vops.c:702 bwrite(fffffd805df048d0) at bwrite+0x1e2 sys/kern/vfs_bio.c:762 ffs_update(fffffd805ca27c30,1) at ffs_update+0x2c2 sys/ufs/ffs/ffs_inode.c:113 ufs_mkdir(ffff80001d787860) at ufs_mkdir+0x42e sys/ufs/ufs/ufs_vnops.c:1197 VOP_MKDIR(fffffd805aa69c50,ffff80001d7879c0,ffff80001d787a10,ffff80001d7878f0) at VOP_MKDIR+0xc6 sys/kern/vfs_vops.c:450 domkdirat(ffff80001d6aa868,ffffff9c,7f7ffffce790,1ff) at domkdirat+0x121 sys/kern/vfs_syscalls.c:3051 syscall(ffff80001d787b90) at syscall+0x507 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffce800, count: -13