login: uvm_fault(0xffffffff8231ca38, 0xffff800004b68002, 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(0xffffffff8231ca38, 0xffff800004b68002, 0, 1) -> e rtable_satoplen(21,ffff800004b67f59) at rtable_satoplen+0x150 sys/net/rtable.c:888 end trace frame: 0xffff800020c096f0, count: 0 ddb{0}> trace rtable_satoplen(21,ffff800004b67f59) at rtable_satoplen+0x150 sys/net/rtable.c:888 rtable_lookup(0,ffff800004b67f09,ffff800004b67f59,ffff800004b67f11,21) at rtable_lookup+0xfd sys/net/rtable.c:391 rtm_output(ffff800004b67f00,ffff800020c097e0,ffff800020c097e8,21,0) at rtm_output+0x1a7 sys/net/rtsock.c:952 route_output(fffffd806f104600,fffffd807b603318,0,0) at route_output+0x79b sys/net/rtsock.c:806 route_usrreq(fffffd807b603318,9,fffffd806f104600,0,0,ffff800020b74018) at route_usrreq+0x35d sys/net/rtsock.c:271 sosend(fffffd807b603318,0,ffff800020c09aa8,0,0,0) at sosend+0x6eb sys/kern/uipc_socket.c:513 sendit(ffff800020b74018,4,ffff800020c09b68,0,ffff800020c09c30) at sendit+0x590 sys/kern/uipc_syscalls.c:662 sys_sendto(ffff800020b74018,ffff800020c09c48,ffff800020c09c30) at sys_sendto+0x92 syscall(ffff800020c09ce0) at syscall+0x5b8 mi_syscall sys/sys/syscall_mi.h:99 [inline] syscall(ffff800020c09ce0) at syscall+0x5b8 sys/arch/amd64/amd64/trap.c:574 Xsyscall(6,0,ffffffffffffffd8,0,6,da8d21eb010) at Xsyscall+0x128 end of kernel end trace frame: 0xdab9a7f68f0, count: -10 ddb{0}> show registers rdi 0 rsi 0xaa rbp 0xffff800020c09650 rbx 0xffffffffffffff5a rdx 0xffff800004b67f5d rcx 0xffff800004b68003 rax 0xffff800004b68003 r8 0x21 r9 0x1 r10 0x4 r11 0x5904f91156671480 r12 0 r13 0xffff800004b68003 r14 0xffffffff82229360 mplsdomain r15 0x4 rip 0xffffffff8158ca90 rtable_satoplen+0x150 cs 0x8 rflags 0x10287 __ALIGN_SIZE+0xf287 rsp 0xffff800020c09600 ss 0x10 rtable_satoplen+0x150: movzbl 0xffffffffffffffff(%r13),%r12d ddb{0}> show proc PROC (syz-executor.1) pid=264991 stat=onproc flags process=1000 proc=4080000 pri=72, usrpri=72, nice=20 forw=0xffffffffffffffff, list=0xffff800020b74e28,0xffffffff82394e00 process=0xffff800020b8c6a8 user=0xffff800020c04000, vmspace=0xfffffd807effe9d8 estcpu=22, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 13288 52326 73778 0 3 0x3000 suspend syz-executor.1 *13288 264991 73778 0 7 0x4081000 syz-executor.1 73778 163064 81025 0 2 0x482 syz-executor.1 45515 107262 1 0 3 0x100083 ttyin getty 8959 381786 0 0 3 0x14200 bored sosplice 40577 117155 81025 0 7 0x2 syz-executor.0 81025 433967 36226 0 3 0x82 thrsleep syz-fuzzer 81025 181739 36226 0 3 0x4000082 nanosleep syz-fuzzer 81025 434508 36226 0 3 0x4000082 thrsleep syz-fuzzer 81025 121082 36226 0 3 0x4000082 thrsleep syz-fuzzer 81025 244579 36226 0 3 0x4000082 thrsleep syz-fuzzer 81025 22916 36226 0 3 0x4000082 thrsleep syz-fuzzer 81025 44253 36226 0 3 0x4000082 thrsleep syz-fuzzer 81025 174876 36226 0 3 0x4000082 kqread syz-fuzzer 81025 37827 36226 0 3 0x4000082 thrsleep syz-fuzzer 81025 80126 36226 0 3 0x4000082 thrsleep syz-fuzzer 36226 232296 63697 0 3 0x10008a pause ksh 63697 280595 84075 0 3 0x92 select sshd 84075 216443 1 0 3 0x80 select sshd 42892 12809 84378 74 3 0x100092 bpf pflogd 84378 481519 1 0 3 0x80 netio pflogd 23333 125852 14580 73 2 0x100090 syslogd 14580 375990 1 0 3 0x100082 netio syslogd 69048 48036 1 77 3 0x100090 poll dhclient 80186 329885 1 0 3 0x80 poll dhclient 32966 424731 0 0 3 0x14200 pgzero zerothread 6868 376346 0 0 3 0x14200 aiodoned aiodoned 22813 23068 0 0 3 0x14200 syncer update 25284 159726 0 0 3 0x14200 cleaner cleaner 15141 80863 0 0 3 0x14200 reaper reaper 11352 477946 0 0 3 0x14200 pgdaemon pagedaemon 20679 222866 0 0 3 0x14200 bored crynlk 6875 101800 0 0 3 0x14200 bored crypto 14718 522415 0 0 3 0x40014200 acpi0 acpi0 72857 14737 0 0 3 0x40014200 idle1 25585 320122 0 0 3 0x14200 bored softnet 65169 136851 0 0 3 0x14200 bored systqmp 67685 320782 0 0 3 0x14200 bored systq 50101 317458 0 0 3 0x40014200 bored softclock 32444 138850 0 0 3 0x40014200 idle0 57378 109107 0 0 3 0x14200 bored smr 1 326766 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 13288 (syz-executor.1) thread 0xffff800020b74018 (264991) exclusive kernel_lock &kernel_lock r = 1 (0xffffffff8234a3d0) locked @ /syzkaller/managers/multicore/kernel/sys/arch/amd64/amd64/softintr.c:87 #0 witness_lock+0x594 sys/kern/subr_witness.c:1201 #1 solock+0x7e sys/kern/uipc_socket2.c:292 #2 sosend+0x586 sys/kern/uipc_socket.c:501 #3 sendit+0x590 sys/kern/uipc_syscalls.c:662 #4 sys_sendto+0x92 #5 syscall+0x5b8 mi_syscall sys/sys/syscall_mi.h:99 [inline] #5 syscall+0x5b8 sys/arch/amd64/amd64/trap.c:574 #6 Xsyscall+0x128 Process 40577 (syz-executor.0) thread 0xffff800020b75788 (117155) exclusive rrwlock inode r = 0 (0xfffffd807ad315f8) locked @ /syzkaller/managers/multicore/kernel/sys/ufs/ufs/ufs_vnops.c:1547 #0 witness_lock+0x594 sys/kern/subr_witness.c:1201 #1 _rw_enter+0x45d sys/kern/kern_rwlock.c:280 #2 _rrw_enter+0x60 sys/kern/kern_rwlock.c:410 #3 VOP_LOCK+0x57 sys/kern/vfs_vops.c:602 #4 vn_lock+0x6e sys/kern/vfs_vnops.c:549 #5 vget+0x1c3 sys/kern/vfs_subr.c:672 #6 ufs_ihashget+0x151 sys/ufs/ufs/ufs_ihash.c:119 #7 ffs_vget+0x84 sys/ufs/ffs/ffs_vfsops.c:1323 #8 ufs_lookup+0x15d3 sys/ufs/ufs/ufs_lookup.c:487 #9 VOP_LOOKUP+0x67 sys/kern/vfs_vops.c:90 #10 vfs_lookup+0x556 sys/kern/vfs_lookup.c:523 #11 namei+0x4b2 sys/kern/vfs_lookup.c:224 #12 dounlinkat+0xa5 sys/kern/vfs_syscalls.c:1673 #13 syscall+0x5b8 mi_syscall sys/sys/syscall_mi.h:99 [inline] #13 syscall+0x5b8 sys/arch/amd64/amd64/trap.c:574 #14 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd807ad31f88) locked @ /syzkaller/managers/multicore/kernel/sys/ufs/ufs/ufs_vnops.c:1547 #0 witness_lock+0x594 sys/kern/subr_witness.c:1201 #1 _rw_enter+0x45d sys/kern/kern_rwlock.c:280 #2 _rrw_enter+0x60 sys/kern/kern_rwlock.c:410 #3 VOP_LOCK+0x57 sys/kern/vfs_vops.c:602 #4 vn_lock+0x6e sys/kern/vfs_vnops.c:549 #5 vget+0x1c3 sys/kern/vfs_subr.c:672 #6 cache_lookup+0x300 sys/kern/vfs_cache.c:224 #7 ufs_lookup+0x1d7 sys/ufs/ufs/ufs_lookup.c:162 #8 VOP_LOOKUP+0x67 sys/kern/vfs_vops.c:90 #9 vfs_lookup+0x556 sys/kern/vfs_lookup.c:523 #10 namei+0x4b2 sys/kern/vfs_lookup.c:224 #11 dounlinkat+0xa5 sys/kern/vfs_syscalls.c:1673 #12 syscall+0x5b8 mi_syscall sys/sys/syscall_mi.h:99 [inline] #12 syscall+0x5b8 sys/arch/amd64/amd64/trap.c:574 #13 Xsyscall+0x128 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim Kern Lim devbuf 9511 6410K 6419K 78643K 10741 0 0 pcb 27 9K 11K 78643K 334 0 0 rtable 101 4K 4K 78643K 373 0 0 ifaddr 56 13K 13K 78643K 114 0 0 counters 39 33K 33K 78643K 39 0 0 ioctlops 0 0K 4K 78643K 1479 0 0 iov 0 0K 20K 78643K 64 0 0 mount 1 1K 1K 78643K 1 0 0 vnodes 1204 75K 76K 78643K 1485 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 91 0 0 dirhash 12 2K 2K 78643K 12 0 0 ACPI 1808 196K 290K 78643K 12628 0 0 file desc 5 13K 21K 78643K 448 0 0 sigio 0 0K 0K 78643K 2 0 0 proc 54 51K 71K 78643K 453 0 0 subproc 64 65538K 67586K 78643K 204 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 48 0 0 in_multi 33 2K 2K 78643K 112 0 0 ether_multi 1 0K 0K 78643K 8 0 0 mrt 0 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 72 318K 318K 78643K 72 0 0 exec 0 0K 1K 78643K 245 0 0 pfkey data 0 0K 0K 78643K 2 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 84 20K 21K 78643K 2333 0 0 UVM aobj 28 4K 4K 78643K 31 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 35 0 0 NDP 11 0K 0K 78643K 35 0 0 temp 158 2374K 2441K 78643K 4603 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 8 0 4 1 0 1 1 0 8 0 inpcbpl 280 273 0 266 1 0 1 1 0 8 0 plimitpl 152 38 0 30 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtentry 112 78 0 38 2 0 2 2 0 8 0 syncache 264 4 0 4 1 1 0 1 0 8 0 tcpqe 32 18 0 18 1 1 0 1 0 8 0 tcpcb 544 106 0 102 1 0 1 1 0 8 0 rttmr 72 1 0 1 1 1 0 1 0 8 0 nd6 48 12 0 8 1 0 1 1 0 8 0 ppxss 1128 7 0 7 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 21 0 9 1 0 1 1 0 8 0 pfstkey 112 21 0 9 1 0 1 1 0 8 0 pfstate 328 21 0 9 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 256 351 0 163 12 0 12 12 0 8 0 art_table 32 352 0 163 2 0 2 2 0 8 0 art_node 16 77 0 43 1 0 1 1 0 8 0 sysvmsgpl 40 6 0 5 1 0 1 1 0 8 0 semapl 112 89 0 79 1 0 1 1 0 8 0 shmpl 112 29 0 3 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino1pl 128 2181 0 754 47 0 47 47 0 8 0 ffsino 272 2181 0 754 96 0 96 96 0 8 0 nchpl 144 3009 0 1362 62 0 62 62 0 8 0 uvmvnodes 72 2338 0 0 43 0 43 43 0 8 0 vnodes 200 2338 0 0 124 0 124 124 0 8 0 namei 1024 8540 0 8540 2 1 1 1 0 8 1 percpumem 16 30 0 0 1 0 1 1 0 8 0 scsiplug 64 2 0 2 1 1 0 1 0 8 0 scxspl 192 8518 0 8518 10 9 1 6 0 8 1 sigapl 432 636 0 621 2 0 2 2 0 8 0 futexpl 56 4999 0 4999 1 0 1 1 0 8 1 knotepl 112 239 0 220 1 0 1 1 0 8 0 kqueuepl 104 138 0 136 1 0 1 1 0 8 0 pipepl 112 574 0 555 4 2 2 2 0 8 1 fdescpl 488 637 0 621 3 0 3 3 0 8 0 filepl 152 3883 0 3781 8 2 6 7 0 8 1 lockfpl 104 165 0 165 2 1 1 1 0 8 1 lockfspl 32 207 0 207 2 1 1 1 0 8 1 sessionpl 112 23 0 12 1 0 1 1 0 8 0 pgrppl 48 25 0 14 1 0 1 1 0 8 0 ucredpl 96 611 0 602 1 0 1 1 0 8 0 zombiepl 144 621 0 621 2 1 1 1 0 8 1 processpl 840 653 0 621 4 0 4 4 0 8 0 procpl 600 1591 0 1549 4 0 4 4 0 8 0 srpgc 64 25 0 25 3 3 0 1 0 8 0 sosppl 128 7 0 7 2 1 1 1 0 8 1 sockpl 384 569 0 548 4 1 3 4 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 10 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 4 0 0 1 0 1 1 0 8 0 mcl2k2 2112 6 0 0 1 0 1 1 0 8 0 mcl2k 2048 119 0 0 14 0 14 14 0 8 0 mtagpl 80 2 0 0 1 0 1 1 0 8 0 mbufpl 256 140 0 0 8 0 8 8 0 8 0 bufpl 256 6836 0 1148 356 0 356 356 0 8 0 anonpl 16 67068 0 58240 43 7 36 41 0 125 0 amapchunkpl 152 3387 0 3300 10 6 4 9 0 158 0 amappl16 192 2247 0 1786 25 1 24 25 0 8 0 amappl15 184 184 0 179 1 0 1 1 0 8 0 amappl14 176 84 0 80 2 1 1 1 0 8 0 amappl13 168 165 0 162 1 0 1 1 0 8 0 amappl12 160 64 0 60 1 0 1 1 0 8 0 amappl11 152 122 0 106 1 0 1 1 0 8 0 amappl10 144 91 0 88 1 0 1 1 0 8 0 amappl9 136 678 0 674 1 0 1 1 0 8 0 amappl8 128 229 0 213 1 0 1 1 0 8 0 amappl7 120 58 0 54 1 0 1 1 0 8 0 amappl6 112 60 0 52 1 0 1 1 0 8 0 amappl5 104 180 0 162 1 0 1 1 0 8 0 amappl4 96 964 0 931 2 1 1 2 0 8 0 amappl3 88 198 0 191 1 0 1 1 0 8 0 amappl2 80 4419 0 4367 2 0 2 2 0 8 0 amappl1 72 23538 0 23092 25 15 10 20 0 8 0 amappl 72 1852 0 1817 1 0 1 1 0 75 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 30 0 3 1 0 1 1 0 8 0 uaddrrnd 24 637 0 621 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 637 0 621 1 0 1 1 0 8 0 vmmpekpl 168 9443 0 9418 2 0 2 2 0 8 0 vmmpepl 168 74602 0 73133 105 26 79 80 0 357 11 vmsppl 360 636 0 621 2 0 2 2 0 8 0 pdppl 4096 1282 0 1242 6 0 6 6 0 8 0 pvpl 32 224184 0 212064 126 19 107 113 0 265 7 pmappl 224 636 0 621 2 1 1 2 0 8 0 extentpl 40 39 0 25 1 0 1 1 0 8 0 phpool 112 507 0 4 15 0 15 15 0 8 0