uvm_fault(0xffffffff82553f08, 0xffff800000ac606e, 0, 1) -> e kernel: page fault trap, code=0 Stopped at rtable_satoplen+0x150: movzbl 0xffffffffffffffff(%r13),%r12d ddb{0}> ddb{0}> set $lines = 0 ddb{0}> set $maxwidth = 0 ddb{0}> show panic kernel page fault uvm_fault(0xffffffff82553f08, 0xffff800000ac606e, 0, 1) -> e rtable_satoplen(2,ffff800000ac5f78) at rtable_satoplen+0x150 sys/net/rtable.c:894 end trace frame: 0xffff800023b82db0, count: 0 ddb{0}> trace rtable_satoplen(2,ffff800000ac5f78) at rtable_satoplen+0x150 sys/net/rtable.c:894 rtable_lookup(0,fffffd806825df20,ffff800000ac5f78,ffff800000ac5f58,4) at rtable_lookup+0xeb sys/net/rtable.c:391 rtrequest_delete(ffff800023b82e50,4,ffff800000ab5800,ffff800023b82f20,0) at rtrequest_delete+0xe3 sys/net/route.c:775 rt_ifa_del(ffff800000ac5f00,800100,ffff800000ac5f58,0) at rt_ifa_del+0x3c3 sys/net/route.c:1191 in_ioctl_change_ifaddr(8040691a,ffff800023b831b0,ffff800000ab5800,1) at in_ioctl_change_ifaddr+0x355 in_remove_prefix sys/netinet/in.c:738 [inline] in_ioctl_change_ifaddr(8040691a,ffff800023b831b0,ffff800000ab5800,1) at in_ioctl_change_ifaddr+0x355 in_ifscrub sys/netinet/in.c:562 [inline] in_ioctl_change_ifaddr(8040691a,ffff800023b831b0,ffff800000ab5800,1) at in_ioctl_change_ifaddr+0x355 sys/netinet/in.c:432 in_ioctl(8040691a,ffff800023b831b0,ffff800000ab5800,1) at in_ioctl+0x205 sys/netinet/in.c:234 ifioctl(fffffd806a463318,8040691a,ffff800023b831b0,ffff800020ab09f8) at ifioctl+0xb64 sys/net/if.c:2202 sys_ioctl(ffff800020ab09f8,ffff800023b832c8,ffff800023b83310) at sys_ioctl+0x5b9 syscall(ffff800023b83390) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:92 [inline] syscall(ffff800023b83390) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:555 Xsyscall(0,0,ffffffffffffff36,0,3,9a6fc12e010) at Xsyscall+0x128 end of kernel end trace frame: 0x9a9026792d0, count: -10 ddb{0}> show registers rdi 0 rsi 0xf7 rbp 0xffff800023b82d10 rbx 0xffffffffffffff0d rdx 0xffff800000ac5f7c rcx 0xffff800000ac606f rax 0xffff800000ac606f r8 0x4 r9 0x7 r10 0xab4ff9a1ab97e2e8 r11 0xf79ef3f3e7067c93 r12 0 r13 0xffff800000ac606f r14 0xffffffff8251dcc0 inetdomain r15 0x4 rip 0xffffffff820a7b20 rtable_satoplen+0x150 cs 0x8 rflags 0x10293 __ALIGN_SIZE+0xf293 rsp 0xffff800023b82cc0 ss 0x10 rtable_satoplen+0x150: movzbl 0xffffffffffffffff(%r13),%r12d ddb{0}> show proc PROC (syz-executor.1) pid=379305 stat=onproc flags process=0 proc=4000000 pri=77, usrpri=77, nice=20 forw=0xffffffffffffffff, list=0xffff800020ab0018,0xffff800020ab1170 process=0xffff800020add500 user=0xffff800023b7e000, vmspace=0xfffffd807f0078a0 estcpu=36, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 76125 465232 95672 0 2 0 syz-executor.1 *76125 379305 95672 0 7 0x4000000 syz-executor.1 20028 390514 88844 0 2 0 syz-executor.0 20028 222926 88844 0 3 0x4000080 piperd syz-executor.0 20028 183509 88844 0 7 0x4000000 syz-executor.0 95672 355010 76258 0 2 0x482 syz-executor.1 27413 30450 0 0 3 0x14200 bored sosplice 88844 135305 76258 0 2 0x482 syz-executor.0 76258 429902 16845 0 3 0x82 thrsleep syz-fuzzer 76258 373773 16845 0 3 0x4000082 thrsleep syz-fuzzer 76258 342119 16845 0 3 0x4000082 thrsleep syz-fuzzer 76258 155915 16845 0 3 0x4000082 thrsleep syz-fuzzer 76258 44368 16845 0 3 0x4000082 thrsleep syz-fuzzer 76258 71271 16845 0 3 0x4000082 thrsleep syz-fuzzer 76258 69823 16845 0 3 0x4000082 thrsleep syz-fuzzer 76258 242910 16845 0 3 0x4000082 thrsleep syz-fuzzer 76258 26510 16845 0 3 0x4000082 thrsleep syz-fuzzer 76258 441145 16845 0 3 0x4000082 kqread syz-fuzzer 16845 79040 44839 0 3 0x10008a pause ksh 44839 71881 63884 0 3 0x92 select sshd 83823 12804 1 0 3 0x100083 ttyin getty 63884 345820 1 0 3 0x80 select sshd 14737 118978 60124 74 3 0x100092 bpf pflogd 60124 328851 1 0 3 0x80 netio pflogd 5987 200441 64379 73 3 0x100090 kqread syslogd 64379 486312 1 0 3 0x100082 netio syslogd 32633 383173 1 77 3 0x100090 poll dhclient 68059 178940 1 0 3 0x80 poll dhclient 88901 416343 0 0 2 0x14200 zerothread 23257 354791 0 0 3 0x14200 aiodoned aiodoned 5166 521401 0 0 3 0x14200 syncer update 21731 423078 0 0 3 0x14200 cleaner cleaner 34259 455674 0 0 3 0x14200 reaper reaper 12166 400794 0 0 3 0x14200 pgdaemon pagedaemon 79553 354702 0 0 3 0x14200 bored crynlk 67172 61810 0 0 3 0x14200 bored crypto 67690 302496 0 0 3 0x40014200 acpi0 acpi0 7044 469530 0 0 3 0x40014200 idle1 69988 81822 0 0 3 0x14200 bored softnet 40492 243303 0 0 3 0x14200 bored systqmp 68106 373472 0 0 3 0x14200 bored systq 15741 76965 0 0 3 0x40014200 bored softclock 85373 194709 0 0 3 0x40014200 idle0 88591 256220 0 0 3 0x14200 bored smr 1 480335 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 76125 (syz-executor.1) thread 0xffff800020ab09f8 (379305) exclusive rwlock netlock r = 0 (0xffffffff82464b38) #0 witness_lock+0x52e sys/kern/subr_witness.c:1163 #1 in_ioctl_change_ifaddr+0x3f #2 in_ioctl+0x205 sys/netinet/in.c:234 #3 ifioctl+0xb64 sys/net/if.c:2202 #4 sys_ioctl+0x5b9 #5 syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:92 [inline] #5 syscall+0x4a4 sys/arch/amd64/amd64/trap.c:555 #6 Xsyscall+0x128 exclusive kernel_lock &kernel_lock r = 1 (0xffffffff8266bc00) #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 Process 20028 (syz-executor.0) thread 0xffff800020ab1160 (183509) exclusive rrwlock inode r = 0 (0xfffffd806d8632c8) #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:574 #5 vn_write+0x11b sys/kern/vfs_vnops.c:414 #6 dofilewritev+0x1b7 sys/kern/sys_generic.c:364 #7 sys_pwritev+0xb8 sys/kern/vfs_syscalls.c:3269 #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 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim Kern Lim devbuf 9523 6414K 7459K 78643K 11777 0 0 pcb 15 8K 8K 78643K 86 0 0 rtable 102 3K 4K 78643K 350 0 0 ifaddr 56 13K 13K 78643K 104 0 0 counters 39 33K 33K 78643K 39 0 0 ioctlops 0 0K 4K 78643K 1482 0 0 iov 1 12K 16K 78643K 42 0 0 mount 1 1K 1K 78643K 1 0 0 vnodes 1226 77K 77K 78643K 1562 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 6 0 0 VM map 3 1K 2K 78643K 5 0 0 sem 12 0K 0K 78643K 99 0 0 dirhash 12 2K 2K 78643K 12 0 0 ACPI 1809 196K 290K 78643K 12766 0 0 file desc 6 17K 25K 78643K 252 0 0 sigio 0 0K 0K 78643K 6 0 0 proc 60 63K 95K 78643K 486 0 0 subproc 32 2K 2K 78643K 51 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 15 0 0 in_multi 34 2K 2K 78643K 48 0 0 ether_multi 1 0K 0K 78643K 3 0 0 ISOFS mount 1 32K 32K 78643K 1 0 0 MSDOSFS mount 1 16K 16K 78643K 1 0 0 ttys 60 265K 265K 78643K 60 0 0 exec 0 0K 1K 78643K 262 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 115 38K 47K 78643K 1828 0 0 UVM aobj 29 2K 2K 78643K 29 0 0 memdesc 1 4K 4K 78643K 1 0 0 crypto data 1 1K 1K 78643K 1 0 0 ip6_options 0 0K 0K 78643K 50 0 0 NDP 11 0K 0K 78643K 29 0 0 temp 165 3563K 3628K 78643K 4951 0 0 kqueue 0 0K 0K 78643K 4 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 9 0 3 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtpcb 80 39 0 37 1 0 1 1 0 8 0 rtentry 112 60 0 19 2 0 2 2 0 8 0 unpcb 120 131 0 121 1 0 1 1 0 8 0 syncache 264 6 0 6 2 2 0 1 0 8 0 tcpqe 32 1 0 1 1 1 0 1 0 8 0 tcpcb 544 106 0 102 1 0 1 1 0 8 0 inpcb 280 333 0 322 2 1 1 2 0 8 0 nd6 48 8 0 4 1 0 1 1 0 8 0 ppxss 1128 7 0 7 2 1 1 1 0 8 1 pffrag 232 8 0 8 1 1 0 1 0 482 0 pffrnode 88 8 0 8 1 1 0 1 0 8 0 pffrent 40 102 0 102 1 1 0 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 48 0 5 1 0 1 1 0 8 0 pfstkey 112 48 0 5 2 0 2 2 0 8 0 pfstate 328 48 0 4 4 0 4 4 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 256 280 0 67 16 2 14 15 0 8 0 art_table 32 281 0 67 2 0 2 2 0 8 0 art_node 16 59 0 22 1 0 1 1 0 8 0 sysvmsgpl 40 36 0 22 1 0 1 1 0 8 0 semupl 112 1 0 1 1 1 0 1 0 8 0 semapl 112 97 0 87 1 0 1 1 0 8 0 shmpl 112 27 0 0 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino1pl 128 1794 0 391 46 0 46 46 0 8 0 ffsino 272 1794 0 391 94 0 94 94 0 8 0 nchpl 144 2421 0 809 61 0 61 61 0 8 0 uvmvnodes 72 2117 0 0 39 0 39 39 0 8 0 vnodes 208 2117 0 0 112 0 112 112 0 8 0 namei 1024 7513 0 7513 1 0 1 1 0 8 1 percpumem 16 30 0 0 1 0 1 1 0 8 0 vcpupl 1984 1 0 0 1 0 1 1 0 8 0 vmpool 552 3 0 2 1 0 1 1 0 8 0 scxspl 192 6371 0 6371 4 3 1 3 0 8 1 plimitpl 152 27 0 19 1 0 1 1 0 8 0 sigapl 432 449 0 433 3 1 2 3 0 8 0 futexpl 56 5451 0 5451 1 0 1 1 0 8 1 knotepl 112 106 0 87 1 0 1 1 0 8 0 kqueuepl 104 75 0 73 1 0 1 1 0 8 0 pipepl 112 290 0 269 1 0 1 1 0 8 0 fdescpl 488 450 0 433 3 0 3 3 0 8 0 filepl 152 3269 0 3160 6 0 6 6 0 8 1 lockfpl 104 73 0 71 1 0 1 1 0 8 0 lockfspl 48 26 0 24 1 0 1 1 0 8 0 sessionpl 112 19 0 8 1 0 1 1 0 8 0 pgrppl 48 19 0 8 1 0 1 1 0 8 0 ucredpl 96 333 0 324 1 0 1 1 0 8 0 zombiepl 144 433 0 433 1 0 1 1 0 8 1 processpl 896 466 0 433 4 0 4 4 0 8 0 procpl 632 1010 0 965 5 0 5 5 0 8 1 srpgc 64 2 0 2 1 1 0 1 0 8 0 sosppl 128 6 0 6 1 0 1 1 0 8 1 sockpl 384 512 0 489 5 2 3 5 0 8 0 mcl64k 65536 5 0 0 1 0 1 1 0 8 0 mcl16k 16384 1 0 0 1 0 1 1 0 8 0 mcl12k 12288 5 0 0 1 0 1 1 0 8 0 mcl9k 9216 1 0 0 1 0 1 1 0 8 0 mcl8k 8192 8 0 0 1 0 1 1 0 8 0 mcl4k 4096 6 0 0 1 0 1 1 0 8 0 mcl2k2 2112 2 0 0 1 0 1 1 0 8 0 mcl2k 2048 157 0 0 19 0 19 19 0 8 0 mtagpl 80 7 0 0 1 0 1 1 0 8 0 mbufpl 256 238 0 0 14 0 14 14 0 8 0 bufpl 256 6600 0 1314 331 0 331 331 0 8 0 anonpl 16 60043 0 45330 85 1 84 84 0 124 8 amapchunkpl 152 2853 0 2736 11 0 11 11 0 158 5 amappl16 192 2056 0 1014 53 0 53 53 0 8 0 amappl15 184 17 0 12 1 0 1 1 0 8 0 amappl14 176 34 0 33 1 0 1 1 0 8 0 amappl12 160 200 0 198 2 1 1 1 0 8 0 amappl11 152 59 0 43 1 0 1 1 0 8 0 amappl10 144 24 0 18 1 0 1 1 0 8 0 amappl9 136 632 0 626 1 0 1 1 0 8 0 amappl8 128 193 0 162 2 0 2 2 0 8 0 amappl7 120 44 0 40 1 0 1 1 0 8 0 amappl6 112 77 0 67 1 0 1 1 0 8 0 amappl5 104 337 0 322 1 0 1 1 0 8 0 amappl4 96 606 0 575 1 0 1 1 0 8 0 amappl3 88 220 0 214 1 0 1 1 0 8 0 amappl2 80 2635 0 2551 3 1 2 3 0 8 0 amappl1 72 20120 0 19660 25 15 10 20 0 8 0 amappl 80 1273 0 1230 2 0 2 2 0 84 1 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 28 0 0 1 0 1 1 0 8 0 uaddrrnd 24 453 0 433 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 453 0 433 1 0 1 1 0 8 0 vmmpekpl 168 7769 0 7736 2 0 2 2 0 8 0 vmmpepl 168 63281 0 60981 151 15 136 136 0 357 36 vmsppl 368 449 0 433 2 0 2 2 0 8 0 pdppl 4096 913 0 871 6 0 6 6 0 8 0 pvpl 32 191674 0 173699 198 0 198 198 0 265 21 pmappl 232 452 0 435 2 0 2 2 0 8 0 extentpl 40 46 0 29 1 0 1 1 0 8 0 phpool 112 496 0 5 15 0 15 15 0 8 0