uvm_fault(0xfffffd807f00ccf0, 0xa, 0, 1) -> e kernel: page fault trap, code=0 Stopped at vio_rxeof+0x191: movzwl 0xa(%r15),%eax ddb{0}> ddb{0}> set $lines = 0 ddb{0}> set $maxwidth = 0 ddb{0}> show panic kernel page fault uvm_fault(0xfffffd807f00ccf0, 0xa, 0, 1) -> e vio_rxeof(ffff800000173000) at vio_rxeof+0x191 sys/dev/pv/if_vio.c:1018 end trace frame: 0xffff800020b5b810, count: 0 ddb{0}> trace vio_rxeof(ffff800000173000) at vio_rxeof+0x191 sys/dev/pv/if_vio.c:1018 vio_rx_intr(ffff800000173050) at vio_rx_intr+0x4d sys/dev/pv/if_vio.c:1055 intr_handler(ffff800020b5b870,ffff80000024db00) at intr_handler+0x8f sys/arch/amd64/amd64/intr.c:529 Xintr_ioapic_edge19_untramp(0,ffffffff811ccda0,0,18041969,a,0) at Xintr_ioapic_edge19_untramp+0x19f Xspllower(0,0,9a185cab0aaf5584,1,ffffffff826312a8,fffffd8066d2e638) at Xspllower+0x19 pool_get() at pool_get+0x15d sys/kern/subr_pool.c:587 uvm_mapent_alloc(fffffd807f00c170,0) at uvm_mapent_alloc+0x2d2 sys/uvm/uvm_map.c:1735 uvm_map_mkentry(fffffd807f00c170,fffffd8066d2e050,fffffd8066d2e050,d16ce083000,68000,0) at uvm_map_mkentry+0x75 sys/uvm/uvm_map.c:1640 uvm_mapent_clone(fffffd807f00c170,d16ce083000,68000,0,5,7) at uvm_mapent_clone+0x9e sys/uvm/uvm_map.c:3707 uvm_mapent_forkcopy(1,fffffd807f00c170,fffffd807f00ccf0,fffffd806b18a8b8,ffff800020b5bca0) at uvm_mapent_forkcopy+0x6a sys/uvm/uvm_map.c:3809 uvmspace_fork(ffff800020add500) at uvmspace_fork+0x229 process_new(ffff800020ab0290,ffff800020add500,1) at process_new+0x19a sys/kern/kern_fork.c:276 fork1() at fork1+0x3ce sys/kern/kern_fork.c:398 syscall(ffff800020b5bf10) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:92 [inline] syscall(ffff800020b5bf10) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:555 Xsyscall(6,2,0,2,0,7f7ffffde564) at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffde530, count: -15 ddb{0}> show registers rdi 0xc rsi 0xc rbp 0xffff800020b5b7b0 rbx 0xffff800000173000 rdx 0 rcx 0xffffffff824a2ff0 cpu_info_full_primary+0x1ff0 rax 0xffffffff824a2ff0 cpu_info_full_primary+0x1ff0 r8 0x2 r9 0 r10 0xfc6f2abb7c6787c6 r11 0xbb8ab1550c0a7002 r12 0xffff80000001ce00 r13 0xc r14 0xfffffd8067523d00 r15 0 rip 0xffffffff81dbe4f1 vio_rxeof+0x191 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff800020b5b720 ss 0x10 vio_rxeof+0x191: movzwl 0xa(%r15),%eax ddb{0}> show proc PROC (syz-executor.0) pid=359015 stat=onproc flags process=2 proc=0 pri=70, usrpri=70, nice=20 forw=0xffffffffffffffff, list=0xffff800020ab18c8,0xffff800020ab0c80 process=0xffff800020add500 user=0xffff800020b56000, vmspace=0xfffffd807f00ccf0 estcpu=36, cpticks=0, pctcpu=0.4 user=0, sys=0, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 48486 246156 23014 0 3 0x2 biowait syz-executor.1 * 1066 359015 23014 0 7 0x2 syz-executor.0 23014 275862 71906 0 3 0x82 thrsleep syz-fuzzer 23014 108691 71906 0 3 0x4000082 nanosleep syz-fuzzer 23014 401476 71906 0 3 0x4000082 thrsleep syz-fuzzer 23014 209768 71906 0 3 0x4000082 thrsleep syz-fuzzer 23014 52186 71906 0 3 0x4000082 thrsleep syz-fuzzer 23014 91475 71906 0 3 0x4000082 thrsleep syz-fuzzer 23014 227651 71906 0 3 0x4000082 thrsleep syz-fuzzer 23014 212146 71906 0 3 0x4000082 kqread syz-fuzzer 23014 241056 71906 0 3 0x4000082 thrsleep syz-fuzzer 23014 139681 71906 0 3 0x4000082 nanosleep syz-fuzzer 71906 390786 20499 0 3 0x10008a pause ksh 20499 125581 77556 0 3 0x92 select sshd 23896 31394 1 0 3 0x100083 ttyin getty 77556 238321 1 0 3 0x80 select sshd 77559 57235 87587 74 3 0x100092 bpf pflogd 87587 395682 1 0 3 0x80 netio pflogd 33292 518020 26703 73 3 0x100090 kqread syslogd 26703 109492 1 0 3 0x100082 netio syslogd 37370 334384 1 77 3 0x100090 poll dhclient 68760 17402 1 0 3 0x80 poll dhclient 66011 170513 0 0 3 0x14200 pgzero zerothread 55456 121020 0 0 3 0x14200 aiodoned aiodoned 48989 476882 0 0 3 0x14200 syncer update 21187 203620 0 0 3 0x14200 cleaner cleaner 1275 517315 0 0 3 0x14200 reaper reaper 33604 64476 0 0 3 0x14200 pgdaemon pagedaemon 39265 399416 0 0 3 0x14200 bored crynlk 21674 199384 0 0 3 0x14200 bored crypto 90311 105221 0 0 3 0x40014200 acpi0 acpi0 34424 307899 0 0 7 0x40014200 idle1 23572 460599 0 0 3 0x14200 bored softnet 79114 466994 0 0 3 0x14200 bored systqmp 52941 264621 0 0 3 0x14200 bored systq 45543 26423 0 0 3 0x40014200 bored softclock 73544 74800 0 0 3 0x40014200 idle0 69744 283579 0 0 3 0x14200 bored smr 1 503245 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 48486 (syz-executor.1) thread 0xffff800020ab0c70 (246156) exclusive rrwlock inode r = 0 (0xfffffd806d91bf88) #0 witness_lock+0x52e sys/kern/subr_witness.c:1163 #1 rw_enter+0x447 sys/kern/kern_rwlock.c:306 #2 rrw_enter+0x4f sys/kern/kern_rwlock.c:435 #3 VOP_LOCK+0xf0 sys/kern/vfs_vops.c:615 #4 vn_lock+0x81 sys/kern/vfs_vnops.c:562 #5 vget+0x1c3 sys/kern/vfs_subr.c:672 #6 ufs_ihashget+0x141 sys/ufs/ufs/ufs_ihash.c:119 #7 ffs_vget+0x74 sys/ufs/ffs/ffs_vfsops.c:1323 #8 ufs_lookup+0x14b4 sys/ufs/ufs/ufs_lookup.c:487 #9 VOP_LOOKUP+0x5b sys/kern/vfs_vops.c:91 #10 vfs_lookup+0x7a6 sys/kern/vfs_lookup.c:568 #11 namei+0x63c sys/kern/vfs_lookup.c:249 #12 dounlinkat+0x99 sys/kern/vfs_syscalls.c:1785 #13 syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:92 [inline] #13 syscall+0x4a4 sys/arch/amd64/amd64/trap.c:555 #14 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd806ac6f2b8) #0 witness_lock+0x52e sys/kern/subr_witness.c:1163 #1 rw_enter+0x447 sys/kern/kern_rwlock.c:306 #2 rrw_enter+0x4f sys/kern/kern_rwlock.c:435 #3 VOP_LOCK+0xf0 sys/kern/vfs_vops.c:615 #4 vn_lock+0x81 sys/kern/vfs_vnops.c:562 #5 vfs_lookup+0xe6 sys/kern/vfs_lookup.c:419 #6 namei+0x63c sys/kern/vfs_lookup.c:249 #7 dounlinkat+0x99 sys/kern/vfs_syscalls.c:1785 #8 syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:92 [inline] #8 syscall+0x4a4 sys/arch/amd64/amd64/trap.c:555 #9 Xsyscall+0x128 Process 1066 (syz-executor.0) thread 0xffff800020ab13d8 (359015) exclusive rwlock vmmaplk r = 0 (0xfffffd807f00c188) #0 witness_lock+0x52e sys/kern/subr_witness.c:1163 #1 rw_enter+0x447 sys/kern/kern_rwlock.c:306 #2 vm_map_lock_ln+0x10d sys/uvm/uvm_map.c:5339 #3 uvmspace_fork+0x112 sys/uvm/uvm_map.c:4002 #4 process_new+0x19a sys/kern/kern_fork.c:276 #5 fork1+0x3ce sys/kern/kern_fork.c:398 #6 syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:92 [inline] #6 syscall+0x4a4 sys/arch/amd64/amd64/trap.c:555 #7 Xsyscall+0x128 exclusive rwlock vmmaplk r = 0 (0xfffffd807f00cd08) #0 witness_lock+0x52e sys/kern/subr_witness.c:1163 #1 rw_enter+0x447 sys/kern/kern_rwlock.c:306 #2 vm_map_lock_ln+0x10d sys/uvm/uvm_map.c:5339 #3 uvmspace_fork+0x37 sys/uvm/uvm_map.c:3993 #4 process_new+0x19a sys/kern/kern_fork.c:276 #5 fork1+0x3ce sys/kern/kern_fork.c:398 #6 syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:92 [inline] #6 syscall+0x4a4 sys/arch/amd64/amd64/trap.c:555 #7 Xsyscall+0x128 exclusive kernel_lock &kernel_lock r = 2 (0xffffffff82623840) #0 witness_lock+0x52e sys/kern/subr_witness.c:1163 #1 syscall+0x400 mi_syscall sys/sys/syscall_mi.h:83 [inline] #1 syscall+0x400 sys/arch/amd64/amd64/trap.c:555 #2 Xsyscall+0x128 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim Kern Lim devbuf 9514 6907K 8135K 78643K 11127 0 0 pcb 13 8K 8K 78643K 57 0 0 rtable 99 3K 3K 78643K 207 0 0 ifaddr 43 11K 11K 78643K 45 0 0 counters 39 33K 33K 78643K 39 0 0 ioctlops 0 0K 4K 78643K 1519 0 0 iov 0 0K 8K 78643K 6 0 0 mount 1 1K 1K 78643K 1 0 0 vnodes 1245 78K 78K 78643K 1357 0 0 UFS quota 1 32K 32K 78643K 1 0 0 UFS mount 5 36K 36K 78643K 5 0 0 shm 2 1K 5K 78643K 3 0 0 VM map 2 1K 1K 78643K 2 0 0 sem 12 0K 0K 78643K 14 0 0 dirhash 12 2K 2K 78643K 12 0 0 ACPI 1808 196K 290K 78643K 12765 0 0 file desc 5 13K 25K 78643K 132 0 0 proc 59 63K 95K 78643K 428 0 0 subproc 32 2K 2K 78643K 34 0 0 NFS srvsock 1 0K 0K 78643K 1 0 0 NFS daemon 1 16K 16K 78643K 1 0 0 ip_moptions 0 0K 0K 78643K 23 0 0 in_multi 33 2K 2K 78643K 33 0 0 ether_multi 1 0K 0K 78643K 1 0 0 ISOFS mount 1 32K 32K 78643K 1 0 0 MSDOSFS mount 1 16K 16K 78643K 1 0 0 ttys 42 185K 185K 78643K 42 0 0 exec 0 0K 1K 78643K 214 0 0 pagedep 1 8K 8K 78643K 1 0 0 inodedep 1 32K 32K 78643K 1 0 0 newblk 1 0K 0K 78643K 1 0 0 VM swap 7 26K 26K 78643K 7 0 0 UVM amap 102 21K 22K 78643K 1301 0 0 UVM aobj 10 2K 2K 78643K 10 0 0 memdesc 1 4K 4K 78643K 1 0 0 crypto data 1 1K 1K 78643K 1 0 0 NDP 7 0K 0K 78643K 11 0 0 temp 137 3554K 3621K 78643K 3865 0 0 SYN cache 2 16K 16K 78643K 2 0 0 ddb{0}> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle arp 64 6 0 1 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtpcb 80 31 0 29 1 0 1 1 0 8 0 rtentry 112 45 0 4 2 0 2 2 0 8 0 unpcb 120 185 0 175 1 0 1 1 0 8 0 syncache 264 4 0 4 1 1 0 1 0 8 0 tcpqe 32 6029 0 6029 1 1 0 1 0 8 0 tcpcb 544 25 0 21 1 0 1 1 0 8 0 inpcb 280 234 0 227 2 0 2 2 0 8 1 nd6 48 4 0 0 1 0 1 1 0 8 0 pfosfp 40 846 0 423 5 0 5 5 0 8 0 pfosfpen 112 1428 0 714 21 0 21 21 0 8 0 pfstitem 24 22 0 3 1 0 1 1 0 8 0 pfstkey 112 22 0 3 1 0 1 1 0 8 0 pfstate 328 22 0 2 2 0 2 2 0 8 0 pfrule 1360 21 0 16 2 1 1 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 213 0 2 14 0 14 14 0 8 0 art_table 32 214 0 2 2 0 2 2 0 8 0 art_node 16 44 0 7 1 0 1 1 0 8 0 semapl 112 12 0 2 1 0 1 1 0 8 0 shmpl 112 8 0 0 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino1pl 128 1544 0 138 46 0 46 46 0 8 0 ffsino 272 1544 0 138 94 0 94 94 0 8 0 nchpl 144 1906 0 287 61 0 61 61 0 8 0 uvmvnodes 72 1716 0 0 32 0 32 32 0 8 0 vnodes 208 1716 0 0 91 0 91 91 0 8 0 namei 1024 5042 0 5042 3 2 1 1 0 8 1 percpumem 16 30 0 0 1 0 1 1 0 8 0 scxspl 192 5220 0 5219 10 9 1 7 0 8 0 plimitpl 152 18 0 10 1 0 1 1 0 8 0 sigapl 432 332 0 317 3 1 2 3 0 8 0 futexpl 56 1941 0 1941 1 0 1 1 0 8 1 knotepl 112 106 0 87 2 0 2 2 0 8 1 kqueuepl 104 19 0 17 1 0 1 1 0 8 0 pipepl 112 174 0 155 2 1 1 1 0 8 0 fdescpl 488 333 0 317 3 0 3 3 0 8 0 filepl 152 1940 0 1840 7 1 6 6 0 8 2 lockfpl 104 27 0 26 1 0 1 1 0 8 0 lockfspl 48 10 0 9 1 0 1 1 0 8 0 sessionpl 112 18 0 7 1 0 1 1 0 8 0 pgrppl 48 18 0 7 1 0 1 1 0 8 0 ucredpl 96 90 0 81 1 0 1 1 0 8 0 zombiepl 144 317 0 317 3 2 1 1 0 8 1 processpl 896 348 0 317 4 0 4 4 0 8 0 procpl 632 543 0 503 4 0 4 4 0 8 0 sockpl 384 452 0 433 6 1 5 5 0 8 3 mcl64k 65536 2 0 0 1 0 1 1 0 8 0 mcl16k 16384 1 0 0 1 0 1 1 0 8 0 mcl12k 12288 1 0 0 1 0 1 1 0 8 0 mcl8k 8192 2 0 0 1 0 1 1 0 8 0 mcl4k 4096 7 0 0 1 0 1 1 0 8 0 mcl2k2 2112 2 0 0 1 0 1 1 0 8 0 mcl2k 2048 124 0 0 15 0 15 15 0 8 0 mtagpl 80 8 0 0 1 0 1 1 0 8 0 mbufpl 256 181 0 0 11 1 10 10 0 8 0 bufpl 256 6304 0 1315 312 0 312 312 0 8 0 anonpl 16 42224 0 28097 60 2 58 58 0 124 0 amapchunkpl 152 1448 0 1339 8 2 6 7 0 158 0 amappl16 192 1305 0 528 40 0 40 40 0 8 0 amappl15 184 4 0 3 1 0 1 1 0 8 0 amappl14 176 84 0 82 2 1 1 1 0 8 0 amappl12 160 14 0 12 2 1 1 1 0 8 0 amappl11 152 58 0 43 1 0 1 1 0 8 0 amappl10 144 57 0 51 1 0 1 1 0 8 0 amappl9 136 618 0 612 1 0 1 1 0 8 0 amappl8 128 176 0 151 2 1 1 2 0 8 0 amappl7 120 77 0 74 1 0 1 1 0 8 0 amappl6 112 75 0 64 1 0 1 1 0 8 0 amappl5 104 131 0 117 1 0 1 1 0 8 0 amappl4 96 586 0 554 1 0 1 1 0 8 0 amappl3 88 166 0 160 1 0 1 1 0 8 0 amappl2 80 1717 0 1653 4 2 2 3 0 8 0 amappl1 72 17234 0 16809 26 16 10 20 0 8 0 amappl 80 791 0 754 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 dma64 64 259 0 259 1 1 0 1 0 8 0 dma32 32 7 0 7 1 1 0 1 0 8 0 dma16 16 17 0 17 1 1 0 1 0 8 0 aobjpl 64 9 0 0 1 0 1 1 0 8 0 uaddrrnd 24 333 0 317 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 333 0 317 1 0 1 1 0 8 0 vmmpekpl 168 6400 0 6370 2 0 2 2 0 8 0 vmmpepl 168 47223 0 45415 140 30 110 111 0 357 27 vmsppl 368 332 0 317 2 0 2 2 0 8 0 pdppl 4096 673 0 634 7 1 6 6 0 8 1 pvpl 32 149794 0 132615 165 24 141 141 0 265 0 pmappl 232 332 0 317 2 1 1 2 0 8 0 extentpl 40 41 0 26 1 0 1 1 0 8 0 phpool 112 471 0 7 14 0 14 14 0 8 0