uvm_fault(0xffffffff82620718, 0xffff800000b0f074, 0, 1) -> e kernel: page fault trap, code=0 Stopped at rtable_satoplen+0x150: movzbl 0xffffffffffffffff(%r13),%r12d ddb{1}> ddb{1}> set $lines = 0 ddb{1}> set $maxwidth = 0 ddb{1}> show panic kernel page fault uvm_fault(0xffffffff82620718, 0xffff800000b0f074, 0, 1) -> e rtable_satoplen(2,ffff800000b0ef78) at rtable_satoplen+0x150 sys/net/rtable.c:894 end trace frame: 0xffff800022d83550, count: 0 ddb{1}> trace rtable_satoplen(2,ffff800000b0ef78) at rtable_satoplen+0x150 sys/net/rtable.c:894 rtable_lookup(0,fffffd8069e3f020,ffff800000b0ef78,ffff800000b0ef58,4) at rtable_lookup+0xeb sys/net/rtable.c:391 rtrequest_delete(ffff800022d835f0,4,ffff800000a68000,ffff800022d836c0,0) at rtrequest_delete+0xe3 sys/net/route.c:775 rt_ifa_del(ffff800000b0ef00,800100,ffff800000b0ef58,0) at rt_ifa_del+0x3c3 sys/net/route.c:1191 in_purgeaddr(ffff800000b0ef00) at in_purgeaddr+0xc6 in_remove_prefix sys/netinet/in.c:738 [inline] in_purgeaddr(ffff800000b0ef00) at in_purgeaddr+0xc6 in_ifscrub sys/netinet/in.c:562 [inline] in_purgeaddr(ffff800000b0ef00) at in_purgeaddr+0xc6 sys/netinet/in.c:678 in_ifinit(ffff800000a68000,ffff800000b0ef00,ffff800022d83a40,1) at in_ifinit+0x234 sys/netinet/in.c:664 in_ioctl_change_ifaddr(8040691a,ffff800022d83a30,ffff800000a68000,1) at in_ioctl_change_ifaddr+0x5de sys/netinet/in.c:452 in_ioctl(8040691a,ffff800022d83a30,ffff800000a68000,1) at in_ioctl+0x205 sys/netinet/in.c:234 ifioctl(fffffd806676e1b8,8040691a,ffff800022d83a30,ffff800020ab0018) at ifioctl+0xb64 sys/net/if.c:2202 sys_ioctl(ffff800020ab0018,ffff800022d83b48,ffff800022d83b90) at sys_ioctl+0x5b9 syscall(ffff800022d83c10) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:92 [inline] syscall(ffff800022d83c10) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:555 Xsyscall(6,0,ffffffffffffff36,0,3,597963ab010) at Xsyscall+0x128 end of kernel end trace frame: 0x59a41980e20, count: -12 ddb{1}> show registers rdi 0 rsi 0xfd rbp 0xffff800022d834b0 rbx 0xffffffffffffff07 rdx 0xffff800000b0ef7c rcx 0xffff800000b0f075 rax 0xffff800000b0f075 r8 0x4 r9 0x5 r10 0x162edc65dc548954 r11 0xe080c6566f8f344b r12 0 r13 0xffff800000b0f075 r14 0xffffffff824cfef0 inetdomain r15 0x4 rip 0xffffffff8102c080 rtable_satoplen+0x150 cs 0x8 rflags 0x10283 __ALIGN_SIZE+0xf283 rsp 0xffff800022d83460 ss 0x10 rtable_satoplen+0x150: movzbl 0xffffffffffffffff(%r13),%r12d ddb{1}> show proc PROC (syz-executor.1) pid=177176 stat=onproc flags process=0 proc=4000000 pri=78, usrpri=78, nice=20 forw=0xffffffffffffffff, list=0xffff800020ab0290,0xffffffff8265bb30 process=0xffff800020add180 user=0xffff800022d7e000, vmspace=0xfffffd807f00ba10 estcpu=36, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 14029 157516 85756 0 7 0 syz-executor.1 *14029 177176 85756 0 7 0x4000000 syz-executor.1 94435 500653 67346 0 2 0 syz-executor.0 94435 115111 67346 0 3 0x4000000 biowait syz-executor.0 67346 253645 1351 0 3 0x82 nanosleep syz-executor.0 85756 121043 1351 0 3 0x82 nanosleep syz-executor.1 28327 339444 0 0 3 0x14200 bored sosplice 1351 33554 64726 0 3 0x82 thrsleep syz-fuzzer 1351 392093 64726 0 3 0x4000082 nanosleep syz-fuzzer 1351 443129 64726 0 3 0x4000082 thrsleep syz-fuzzer 1351 32648 64726 0 3 0x4000082 thrsleep syz-fuzzer 1351 141815 64726 0 3 0x4000082 thrsleep syz-fuzzer 1351 303039 64726 0 3 0x4000082 kqread syz-fuzzer 1351 210472 64726 0 3 0x4000082 thrsleep syz-fuzzer 1351 277971 64726 0 3 0x4000082 nanosleep syz-fuzzer 1351 195692 64726 0 3 0x4000082 thrsleep syz-fuzzer 1351 489648 64726 0 3 0x4000082 thrsleep syz-fuzzer 64726 506242 90099 0 3 0x10008a pause ksh 90099 18950 64013 0 3 0x92 select sshd 94006 16732 1 0 3 0x100083 ttyin getty 64013 428038 1 0 3 0x80 select sshd 70939 8600 3869 74 3 0x100092 bpf pflogd 3869 53622 1 0 3 0x80 netio pflogd 66379 352968 28460 73 3 0x100090 kqread syslogd 28460 469581 1 0 3 0x100082 netio syslogd 87556 326695 1 77 3 0x100090 poll dhclient 58145 294573 1 0 3 0x80 poll dhclient 93090 32010 0 0 2 0x14200 zerothread 10540 38331 0 0 3 0x14200 aiodoned aiodoned 57390 197724 0 0 3 0x14200 syncer update 74272 362701 0 0 3 0x14200 cleaner cleaner 42840 366558 0 0 3 0x14200 reaper reaper 23457 321213 0 0 3 0x14200 pgdaemon pagedaemon 3426 456171 0 0 3 0x14200 bored crynlk 60632 206542 0 0 3 0x14200 bored crypto 10764 62774 0 0 3 0x40014200 acpi0 acpi0 27833 489057 0 0 3 0x40014200 idle1 71280 493256 0 0 3 0x14200 bored softnet 11940 105290 0 0 3 0x14200 bored systqmp 86853 149282 0 0 3 0x14200 bored systq 88083 244826 0 0 3 0x40014200 bored softclock 82854 155177 0 0 3 0x40014200 idle0 96741 211894 0 0 3 0x14200 bored smr 1 76608 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 14029 (syz-executor.1) thread 0xffff800020ab0018 (177176) exclusive rwlock netlock r = 0 (0xffffffff82478e48) #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 (0xffffffff8263e9d8) #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 94435 (syz-executor.0) thread 0xffff800020ab0290 (115111) exclusive rrwlock inode r = 0 (0xfffffd8065d60f80) #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 ufs_ihashins+0x45 sys/ufs/ufs/ufs_ihash.c:140 #4 ffs_vget+0x13e sys/ufs/ffs/ffs_vfsops.c:1352 #5 ffs_inode_alloc+0x1cf sys/ufs/ffs/ffs_alloc.c:392 #6 ufs_makeinode+0xaa sys/ufs/ufs/ufs_vnops.c:1832 #7 ufs_symlink+0x47 sys/ufs/ufs/ufs_vnops.c:1384 #8 VOP_SYMLINK+0xdd sys/kern/vfs_vops.c:498 #9 dosymlinkat+0x161 sys/kern/vfs_syscalls.c:1739 #10 syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:92 [inline] #10 syscall+0x4a4 sys/arch/amd64/amd64/trap.c:555 #11 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd8065d60c50) #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 vfs_lookup+0xe6 sys/kern/vfs_lookup.c:419 #6 namei+0x63c sys/kern/vfs_lookup.c:249 #7 dosymlinkat+0xbb sys/kern/vfs_syscalls.c:1725 #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{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim Kern Lim devbuf 9531 7055K 7444K 78643K 11603 0 0 pcb 13 8K 8K 78643K 128 0 0 rtable 111 4K 4K 78643K 500 0 0 ifaddr 67 14K 14K 78643K 117 0 0 counters 39 33K 33K 78643K 39 0 0 ioctlops 0 0K 4K 78643K 1496 0 0 iov 0 0K 16K 78643K 81 0 0 mount 1 1K 1K 78643K 1 0 0 vnodes 1219 77K 77K 78643K 1563 0 0 UFS quota 1 32K 32K 78643K 1 0 0 UFS mount 5 36K 36K 78643K 5 0 0 shm 3 5K 5K 78643K 5 0 0 VM map 4 2K 2K 78643K 6 0 0 sem 12 1K 1K 78643K 197 0 0 dirhash 12 2K 2K 78643K 12 0 0 ACPI 1808 196K 290K 78643K 12765 0 0 file desc 6 17K 25K 78643K 465 0 0 sigio 0 0K 0K 78643K 5 0 0 proc 61 63K 95K 78643K 571 0 0 subproc 32 2K 2K 78643K 68 0 0 NFS srvsock 1 0K 0K 78643K 1 0 0 NFS daemon 1 16K 16K 78643K 1 0 0 ip_moptions 0 0K 1K 78643K 67 0 0 in_multi 33 2K 2K 78643K 81 0 0 ether_multi 1 0K 0K 78643K 6 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 282 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 118 38K 39K 78643K 2515 0 0 UVM aobj 130 4K 4K 78643K 132 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 117 0 0 NDP 16 0K 0K 78643K 33 0 0 temp 185 3560K 4200K 78643K 8991 0 0 kqueue 0 0K 0K 78643K 3 0 0 SYN cache 2 16K 16K 78643K 2 0 0 ddb{1}> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle arp 64 25 0 19 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtpcb 80 40 0 38 1 0 1 1 0 8 0 rtentry 112 104 0 60 2 0 2 2 0 8 0 unpcb 120 246 0 236 1 0 1 1 0 8 0 syncache 264 6 0 6 2 2 0 1 0 8 0 tcpqe 32 137 0 137 2 2 0 2 0 8 0 tcpcb 544 224 0 220 3 2 1 3 0 8 0 inpcb 280 757 0 749 5 2 3 3 0 8 2 ip6q 72 2 0 2 1 1 0 1 0 8 0 ip6af 40 6 0 6 1 1 0 1 0 8 0 nd6 48 8 0 4 1 0 1 1 0 8 0 ppxss 1128 8 0 8 2 1 1 1 0 8 1 pffrag 232 14 0 14 2 1 1 1 0 482 1 pffrnode 88 14 0 14 2 1 1 1 0 8 1 pffrent 40 290 0 290 2 1 1 1 0 8 1 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 60 0 19 1 0 1 1 0 8 0 pfstkey 112 60 0 19 2 0 2 2 0 8 0 pfstate 328 60 0 19 4 0 4 4 0 8 0 pfrule 1360 21 0 16 2 1 1 2 0 8 0 art_heap8 4096 4 0 2 3 1 2 3 0 8 0 art_heap4 256 397 0 154 18 2 16 16 0 8 0 art_table 32 401 0 156 2 0 2 2 0 8 0 art_node 16 103 0 63 1 0 1 1 0 8 0 sysvmsgpl 40 42 0 26 1 0 1 1 0 8 0 semupl 112 3 0 3 1 1 0 1 0 8 0 semapl 112 195 0 185 1 0 1 1 0 8 0 shmpl 112 130 0 2 4 0 4 4 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino1pl 128 2063 0 656 46 0 46 46 0 8 0 ffsino 272 2063 0 656 95 0 95 95 0 8 0 nchpl 144 2945 0 2492 61 40 21 61 0 8 0 uvmvnodes 72 2357 0 0 43 0 43 43 0 8 0 vnodes 208 2357 0 0 125 0 125 125 0 8 0 namei 1024 8394 0 8392 1 0 1 1 0 8 0 percpumem 16 30 0 0 1 0 1 1 0 8 0 vcpupl 1984 2 0 0 1 0 1 1 0 8 0 vmpool 552 4 0 2 1 0 1 1 0 8 0 scsiplug 64 2 0 2 2 1 1 1 0 8 1 scxspl 192 8683 0 8682 9 8 1 7 0 8 0 plimitpl 152 55 0 47 1 0 1 1 0 8 0 sigapl 432 659 0 643 3 1 2 3 0 8 0 futexpl 56 11025 0 11025 1 0 1 1 0 8 1 knotepl 112 162 0 143 1 0 1 1 0 8 0 kqueuepl 104 94 0 92 1 0 1 1 0 8 0 pipepl 112 1932 0 1913 6 3 3 4 0 8 2 fdescpl 488 660 0 643 3 0 3 3 0 8 0 filepl 152 5778 0 5677 10 3 7 8 0 8 3 lockfpl 104 114 0 113 1 0 1 1 0 8 0 lockfspl 48 40 0 39 1 0 1 1 0 8 0 sessionpl 112 20 0 9 1 0 1 1 0 8 0 pgrppl 48 30 0 19 1 0 1 1 0 8 0 ucredpl 96 471 0 462 1 0 1 1 0 8 0 zombiepl 144 643 0 643 1 0 1 1 0 8 1 processpl 896 676 0 643 4 0 4 4 0 8 0 procpl 632 1652 0 1608 6 1 5 5 0 8 1 srpgc 64 4 0 4 2 2 0 1 0 8 0 sosppl 128 13 0 13 3 2 1 1 0 8 1 sockpl 384 1045 0 1025 8 3 5 6 0 8 2 mcl64k 65536 265 0 0 34 0 34 34 0 8 0 mcl16k 16384 1 0 0 1 0 1 1 0 8 0 mcl12k 12288 4 0 0 1 0 1 1 0 8 0 mcl9k 9216 6 0 0 1 0 1 1 0 8 0 mcl8k 8192 3 0 0 1 0 1 1 0 8 0 mcl4k 4096 11 0 0 2 0 2 2 0 8 0 mcl2k2 2112 1 0 0 1 0 1 1 0 8 0 mcl2k 2048 234 0 0 29 0 29 29 0 8 0 mtagpl 80 16 0 0 1 0 1 1 0 8 0 mbufpl 256 367 0 0 22 0 22 22 0 8 0 bufpl 256 7116 0 1319 363 0 363 363 0 8 0 anonpl 16 94446 0 79324 103 8 95 95 0 124 13 amapchunkpl 152 3918 0 3804 10 4 6 10 0 158 0 amappl16 192 3963 0 2867 78 15 63 68 0 8 8 amappl14 176 233 0 232 1 0 1 1 0 8 0 amappl13 168 2 0 2 1 1 0 1 0 8 0 amappl12 160 208 0 205 2 1 1 1 0 8 0 amappl11 152 83 0 65 1 0 1 1 0 8 0 amappl10 144 23 0 19 1 0 1 1 0 8 0 amappl9 136 645 0 639 1 0 1 1 0 8 0 amappl8 128 224 0 189 2 0 2 2 0 8 0 amappl7 120 48 0 43 1 0 1 1 0 8 0 amappl6 112 87 0 73 1 0 1 1 0 8 0 amappl5 104 350 0 332 1 0 1 1 0 8 0 amappl4 96 838 0 808 1 0 1 1 0 8 0 amappl3 88 401 0 392 1 0 1 1 0 8 0 amappl2 80 4253 0 4174 3 1 2 3 0 8 0 amappl1 72 24588 0 24141 25 15 10 20 0 8 0 amappl 80 1930 0 1888 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 17 0 17 1 1 0 1 0 8 0 aobjpl 64 131 0 2 3 0 3 3 0 8 0 uaddrrnd 24 664 0 643 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 664 0 643 1 0 1 1 0 8 0 vmmpekpl 168 12500 0 12467 3 1 2 2 0 8 0 vmmpepl 168 91598 0 89252 167 26 141 141 0 357 39 vmsppl 368 659 0 643 2 0 2 2 0 8 0 pdppl 4096 1335 0 1292 6 0 6 6 0 8 0 pvpl 32 271854 0 253459 227 7 220 222 0 265 32 pmappl 232 663 0 645 3 1 2 2 0 8 0 extentpl 40 41 0 26 1 0 1 1 0 8 0 phpool 112 587 0 8 17 0 17 17 0 8 0