uvm_fault(0xffffffff82620600, 0xffff800000ae5074, 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(0xffffffff82620600, 0xffff800000ae5074, 0, 1) -> e rtable_satoplen(2,ffff800000ae4f78) at rtable_satoplen+0x150 sys/net/rtable.c:894 end trace frame: 0xffff800021b855b0, count: 0 ddb{1}> trace rtable_satoplen(2,ffff800000ae4f78) at rtable_satoplen+0x150 sys/net/rtable.c:894 rtable_lookup(0,fffffd8062d9c220,ffff800000ae4f78,ffff800000ae4f58,4) at rtable_lookup+0xeb sys/net/rtable.c:391 rtrequest_delete(ffff800021b85650,4,ffff800000a94800,ffff800021b85720,0) at rtrequest_delete+0xe3 sys/net/route.c:775 rt_ifa_del(ffff800000ae4f00,800100,ffff800000ae4f58,0) at rt_ifa_del+0x3c3 sys/net/route.c:1191 in_purgeaddr(ffff800000ae4f00) at in_purgeaddr+0xc6 in_remove_prefix sys/netinet/in.c:738 [inline] in_purgeaddr(ffff800000ae4f00) at in_purgeaddr+0xc6 in_ifscrub sys/netinet/in.c:562 [inline] in_purgeaddr(ffff800000ae4f00) at in_purgeaddr+0xc6 sys/netinet/in.c:678 in_ifinit(ffff800000a94800,ffff800000ae4f00,ffff800021b85aa0,1) at in_ifinit+0x234 sys/netinet/in.c:664 in_ioctl_change_ifaddr(8040691a,ffff800021b85a90,ffff800000a94800,1) at in_ioctl_change_ifaddr+0x5de sys/netinet/in.c:452 in_ioctl(8040691a,ffff800021b85a90,ffff800000a94800,1) at in_ioctl+0x205 sys/netinet/in.c:234 ifioctl(fffffd806f6cf780,8040691a,ffff800021b85a90,ffff800020abf650) at ifioctl+0xb64 sys/net/if.c:2202 sys_ioctl(ffff800020abf650,ffff800021b85ba8,ffff800021b85bf0) at sys_ioctl+0x5b9 syscall(ffff800021b85c70) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:92 [inline] syscall(ffff800021b85c70) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:555 Xsyscall(6,0,ffffffffffffff36,0,3,782d2788010) at Xsyscall+0x128 end of kernel end trace frame: 0x78549aab360, count: -12 ddb{1}> show registers rdi 0 rsi 0xfd rbp 0xffff800021b85510 rbx 0xffffffffffffff07 rdx 0xffff800000ae4f7c rcx 0xffff800000ae5075 rax 0xffff800000ae5075 r8 0x4 r9 0x5 r10 0x14c0cf28ed27bcd6 r11 0xdeb2dae6c91fa1eb r12 0 r13 0xffff800000ae5075 r14 0xffffffff824685c0 inetdomain r15 0x4 rip 0xffffffff816e4d60 rtable_satoplen+0x150 cs 0x8 rflags 0x10283 __ALIGN_SIZE+0xf283 rsp 0xffff800021b854c0 ss 0x10 rtable_satoplen+0x150: movzbl 0xffffffffffffffff(%r13),%r12d ddb{1}> show proc PROC (syz-executor.1) pid=118403 stat=onproc flags process=0 proc=4000000 pri=86, usrpri=86, nice=20 forw=0xffffffffffffffff, list=0xffff800020abe780,0xffffffff826716a0 process=0xffff800020addc00 user=0xffff800021b80000, vmspace=0xfffffd807f00a8a0 estcpu=36, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 78267 140029 28581 0 2 0 syz-executor.1 *78267 118403 28581 0 7 0x4000000 syz-executor.1 72761 302569 0 0 3 0x14200 acct acct 52026 357762 0 0 3 0x14200 bored sosplice 28581 174877 29851 0 3 0x82 nanosleep syz-executor.1 73546 395631 29851 0 3 0x2 biowait syz-executor.0 29851 207509 86810 0 3 0x82 thrsleep syz-fuzzer 29851 359666 86810 0 3 0x4000082 nanosleep syz-fuzzer 29851 176466 86810 0 3 0x4000082 thrsleep syz-fuzzer 29851 242672 86810 0 3 0x4000082 thrsleep syz-fuzzer 29851 42226 86810 0 3 0x4000082 thrsleep syz-fuzzer 29851 276521 86810 0 3 0x4000082 thrsleep syz-fuzzer 29851 99645 86810 0 7 0x4000002 syz-fuzzer 29851 254649 86810 0 3 0x4000082 thrsleep syz-fuzzer 29851 366353 86810 0 3 0x4000082 kqread syz-fuzzer 29851 467626 86810 0 3 0x4000082 thrsleep syz-fuzzer 86810 456347 80444 0 3 0x10008a pause ksh 80444 202440 82851 0 3 0x92 select sshd 72645 377723 1 0 3 0x100083 ttyin getty 82851 26139 1 0 3 0x80 select sshd 91900 320768 19644 74 3 0x100092 bpf pflogd 19644 310180 1 0 3 0x80 netio pflogd 90682 242863 1941 73 3 0x100090 kqread syslogd 1941 80771 1 0 3 0x100082 netio syslogd 26723 436980 1 77 3 0x100090 poll dhclient 21432 204355 1 0 3 0x80 poll dhclient 82448 218711 0 0 3 0x14200 pgzero zerothread 25965 84369 0 0 3 0x14200 aiodoned aiodoned 93254 397305 0 0 3 0x14200 syncer update 13883 231205 0 0 3 0x14200 cleaner cleaner 65913 192196 0 0 3 0x14200 reaper reaper 91923 230029 0 0 3 0x14200 pgdaemon pagedaemon 4636 387589 0 0 3 0x14200 bored crynlk 29465 410486 0 0 3 0x14200 bored crypto 43324 485901 0 0 3 0x40014200 acpi0 acpi0 62537 169726 0 0 3 0x40014200 idle1 25535 254084 0 0 3 0x14200 bored softnet 31301 44476 0 0 3 0x14200 bored systqmp 93503 369454 0 0 3 0x14200 bored systq 21236 94609 0 0 3 0x40014200 bored softclock 1570 299395 0 0 3 0x40014200 idle0 16838 238671 0 0 3 0x14200 bored smr 1 11460 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 78267 (syz-executor.1) thread 0xffff800020abf650 (118403) exclusive rwlock netlock r = 0 (0xffffffff824ca238) #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 (0xffffffff82625ee0) #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 73546 (syz-executor.0) thread 0xffff800020abe018 (395631) exclusive rrwlock inode r = 0 (0xfffffd806602d920) #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 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 (0xfffffd806ac671a8) #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 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 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim Kern Lim devbuf 9566 6807K 7835K 78643K 12969 0 0 pcb 13 8K 8K 78643K 143 0 0 rtable 95 4K 4K 78643K 398 0 0 ifaddr 60 13K 13K 78643K 132 0 0 counters 39 33K 33K 78643K 39 0 0 ioctlops 0 0K 4K 78643K 1483 0 0 iov 0 0K 16K 78643K 68 0 0 mount 1 1K 1K 78643K 1 0 0 vnodes 1240 78K 78K 78643K 1878 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 2 1K 1K 78643K 2 0 0 sem 12 0K 0K 78643K 109 0 0 dirhash 12 2K 2K 78643K 12 0 0 ACPI 1808 196K 290K 78643K 12765 0 0 file desc 5 13K 25K 78643K 404 0 0 sigio 0 0K 0K 78643K 6 0 0 proc 61 63K 83K 78643K 536 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 36 0 0 in_multi 22 1K 2K 78643K 72 0 0 ether_multi 1 0K 0K 78643K 8 0 0 mrt 0 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 54 238K 238K 78643K 54 0 0 exec 0 0K 1K 78643K 270 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 116 22K 23K 78643K 2365 0 0 UVM aobj 12 2K 2K 78643K 12 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 96 0 0 NDP 13 0K 0K 78643K 36 0 0 temp 178 3559K 3625K 78643K 7897 0 0 kqueue 0 0K 0K 78643K 7 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 12 0 6 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtpcb 80 29 0 27 1 0 1 1 0 8 0 rtentry 112 65 0 29 2 0 2 2 0 8 0 unpcb 120 746 0 736 1 0 1 1 0 8 0 syncache 264 11 0 11 3 2 1 1 0 8 1 tcpqe 32 168 0 168 2 2 0 1 0 8 0 tcpcb 544 212 0 208 2 0 2 2 0 8 1 inpcb 280 585 0 576 2 0 2 2 0 8 1 rttmr 72 2 0 2 2 2 0 1 0 8 0 nd6 48 6 0 4 1 0 1 1 0 8 0 ppxss 1128 13 0 13 1 0 1 1 0 8 1 pffrag 232 4 0 4 2 2 0 1 0 482 0 pffrnode 88 4 0 4 2 2 0 1 0 8 0 pffrent 40 51 0 51 2 2 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 8 1 0 1 1 0 8 0 pfstkey 112 48 0 8 2 0 2 2 0 8 0 pfstate 328 48 0 8 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 256 281 0 95 14 2 12 14 0 8 0 art_table 32 282 0 95 2 0 2 2 0 8 0 art_node 16 64 0 31 1 0 1 1 0 8 0 sysvmsgpl 40 80 0 49 1 0 1 1 0 8 0 semupl 112 1 0 1 1 1 0 1 0 8 0 semapl 112 107 0 97 1 0 1 1 0 8 0 shmpl 112 10 0 0 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino1pl 128 2068 0 664 46 0 46 46 0 8 0 ffsino 272 2068 0 664 95 0 95 95 0 8 0 nchpl 144 2906 0 1299 61 0 61 61 0 8 0 uvmvnodes 72 2695 0 0 49 0 49 49 0 8 0 vnodes 208 2695 0 0 142 0 142 142 0 8 0 namei 1024 8966 0 8966 1 0 1 1 0 8 1 percpumem 16 30 0 0 1 0 1 1 0 8 0 scsiplug 64 1 0 1 1 0 1 1 0 8 1 scxspl 192 8610 0 8609 9 6 3 7 0 8 2 plimitpl 152 41 0 33 1 0 1 1 0 8 0 sigapl 432 601 0 586 3 1 2 3 0 8 0 futexpl 56 9684 0 9684 1 0 1 1 0 8 1 knotepl 112 111 0 92 1 0 1 1 0 8 0 kqueuepl 104 89 0 87 1 0 1 1 0 8 0 pipepl 112 314 0 295 1 0 1 1 0 8 0 fdescpl 488 602 0 586 3 0 3 3 0 8 0 filepl 152 5111 0 5010 8 1 7 7 0 8 2 lockfpl 104 116 0 115 1 0 1 1 0 8 0 lockfspl 48 45 0 44 1 0 1 1 0 8 0 sessionpl 112 19 0 8 1 0 1 1 0 8 0 pgrppl 48 23 0 12 1 0 1 1 0 8 0 ucredpl 96 570 0 561 1 0 1 1 0 8 0 zombiepl 144 586 0 586 1 0 1 1 0 8 1 processpl 896 619 0 586 4 0 4 4 0 8 0 procpl 632 1540 0 1497 5 0 5 5 0 8 1 srpgc 64 4 0 4 1 1 0 1 0 8 0 sosppl 128 7 0 7 1 1 0 1 0 8 0 sockpl 384 1370 0 1350 5 0 5 5 0 8 3 mcl64k 65536 11 0 0 2 0 2 2 0 8 0 mcl16k 16384 3 0 0 1 0 1 1 0 8 0 mcl12k 12288 8 0 0 1 0 1 1 0 8 0 mcl9k 9216 2 0 0 1 0 1 1 0 8 0 mcl8k 8192 5 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 162 0 0 20 0 20 20 0 8 0 mtagpl 80 32 0 0 1 0 1 1 0 8 0 mbufpl 256 437 0 0 26 0 26 26 0 8 0 bufpl 256 7463 0 1315 385 0 385 385 0 8 0 anonpl 16 73021 0 54154 79 1 78 78 0 124 1 amapchunkpl 152 3651 0 3522 9 0 9 9 0 158 2 amappl16 192 2865 0 1810 55 0 55 55 0 8 2 amappl15 184 5 0 3 1 0 1 1 0 8 0 amappl14 176 248 0 244 1 0 1 1 0 8 0 amappl13 168 1 0 1 1 1 0 1 0 8 0 amappl12 160 9 0 8 1 0 1 1 0 8 0 amappl11 152 61 0 46 1 0 1 1 0 8 0 amappl10 144 15 0 10 1 0 1 1 0 8 0 amappl9 136 784 0 776 1 0 1 1 0 8 0 amappl8 128 351 0 321 1 0 1 1 0 8 0 amappl7 120 44 0 39 1 0 1 1 0 8 0 amappl6 112 73 0 65 1 0 1 1 0 8 0 amappl5 104 142 0 127 1 0 1 1 0 8 0 amappl4 96 863 0 830 2 1 1 2 0 8 0 amappl3 88 327 0 321 1 0 1 1 0 8 0 amappl2 80 3826 0 3751 3 0 3 3 0 8 0 amappl1 72 23584 0 23153 25 15 10 20 0 8 0 amappl 80 1804 0 1764 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 17 0 17 1 1 0 1 0 8 0 aobjpl 64 11 0 0 1 0 1 1 0 8 0 uaddrrnd 24 602 0 586 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 602 0 586 1 0 1 1 0 8 0 vmmpekpl 168 8601 0 8567 2 0 2 2 0 8 0 vmmpepl 168 82041 0 79853 144 17 127 139 0 357 29 vmsppl 368 601 0 586 2 0 2 2 0 8 0 pdppl 4096 1211 0 1172 6 0 6 6 0 8 1 pvpl 32 233150 0 211107 190 0 190 190 0 265 8 pmappl 232 601 0 586 3 2 1 2 0 8 0 extentpl 40 41 0 26 1 0 1 1 0 8 0 phpool 112 564 0 5 16 0 16 16 0 8 0