login: uvm_fault(0xffffffff822f43c8, 0xffff800004b5d002, 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(0xffffffff822f43c8, 0xffff800004b5d002, 0, 1) -> e rtable_satoplen(21,ffff800004b5cf59) at rtable_satoplen+0x150 sys/net/rtable.c:888 end trace frame: 0xffff800020c4b6b0, count: 0 ddb{1}> trace rtable_satoplen(21,ffff800004b5cf59) at rtable_satoplen+0x150 sys/net/rtable.c:888 rtable_lookup(0,ffff800004b5cf09,ffff800004b5cf59,ffff800004b5cf11,21) at rtable_lookup+0xfd sys/net/rtable.c:391 rtm_output(ffff800004b5cf00,ffff800020c4b7a0,ffff800020c4b7a8,21,0) at rtm_output+0x10c sys/net/rtsock.c:1122 route_output(fffffd807789ab00,fffffd806f6c3300,0,0) at route_output+0x79b sys/net/rtsock.c:806 route_usrreq(fffffd806f6c3300,9,fffffd807789ab00,0,0,ffff800020b384c8) at route_usrreq+0x35d sys/net/rtsock.c:271 sosend(fffffd806f6c3300,0,ffff800020c4ba68,0,0,0) at sosend+0x6eb sys/kern/uipc_socket.c:513 sendit(ffff800020b384c8,4,ffff800020c4bb28,0,ffff800020c4bbf0) at sendit+0x590 sys/kern/uipc_syscalls.c:662 sys_sendto(ffff800020b384c8,ffff800020c4bc08,ffff800020c4bbf0) at sys_sendto+0x92 syscall(ffff800020c4bca0) at syscall+0x5b8 mi_syscall sys/sys/syscall_mi.h:99 [inline] syscall(ffff800020c4bca0) at syscall+0x5b8 sys/arch/amd64/amd64/trap.c:574 Xsyscall(6,0,ffffffffffffffd8,0,6,a7abd6d8010) at Xsyscall+0x128 end of kernel end trace frame: 0xa7d727a68f0, count: -10 ddb{1}> show registers rdi 0 rsi 0xaa rbp 0xffff800020c4b610 rbx 0xffffffffffffff5a rdx 0xffff800004b5cf5d rcx 0xffff800004b5d003 rax 0xffff800004b5d003 r8 0x21 r9 0x1 r10 0x4 r11 0x46e2d29cff138f5b r12 0 r13 0xffff800004b5d003 r14 0xffffffff821c2010 mplsdomain r15 0x4 rip 0xffffffff814b31e0 rtable_satoplen+0x150 cs 0x8 rflags 0x10287 __ALIGN_SIZE+0xf287 rsp 0xffff800020c4b5c0 ss 0x10 rtable_satoplen+0x150: movzbl 0xffffffffffffffff(%r13),%r12d ddb{1}> show proc PROC (syz-executor.1) pid=357755 stat=onproc flags process=1010 proc=4080000 pri=86, usrpri=86, nice=20 forw=0xffffffffffffffff, list=0xffff800020b38978,0xffffffff8235ec20 process=0xffff800020b3b708 user=0xffff800020c46000, vmspace=0xfffffd807effeca8 estcpu=36, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 28805 204857 62832 32767 3 0x3010 suspend syz-executor.1 *28805 357755 62832 32767 7 0x4081010 syz-executor.1 62832 303750 42514 32767 3 0x90 nanosleep syz-executor.1 42514 512502 93989 0 3 0x82 wait syz-executor.1 49775 6985 0 0 3 0x14200 bored sosplice 15592 276219 63409 32767 3 0x10 biowait syz-executor.0 63409 414161 93989 0 3 0x82 wait syz-executor.0 93989 408236 97039 0 3 0x82 kqread syz-fuzzer 93989 317958 97039 0 3 0x4000082 nanosleep syz-fuzzer 93989 5191 97039 0 3 0x4000082 thrsleep syz-fuzzer 93989 318588 97039 0 3 0x4000082 thrsleep syz-fuzzer 93989 484222 97039 0 3 0x4000082 thrsleep syz-fuzzer 93989 263763 97039 0 3 0x4000082 thrsleep syz-fuzzer 93989 8820 97039 0 3 0x4000082 thrsleep syz-fuzzer 93989 438192 97039 0 3 0x4000082 thrsleep syz-fuzzer 93989 26028 97039 0 3 0x4000082 thrsleep syz-fuzzer 93989 271351 97039 0 3 0x4000082 thrsleep syz-fuzzer 97039 300944 37376 0 3 0x10008a pause ksh 37376 431493 44005 0 3 0x92 select sshd 95207 169706 1 0 3 0x100083 ttyin getty 44005 179277 1 0 3 0x80 select sshd 83744 105220 512 73 2 0x100090 syslogd 512 197488 1 0 3 0x100082 netio syslogd 39188 56115 1 77 3 0x100090 poll dhclient 25843 391831 1 0 3 0x80 poll dhclient 85404 424752 0 0 3 0x14200 pgzero zerothread 76505 282838 0 0 3 0x14200 aiodoned aiodoned 66904 150083 0 0 3 0x14200 syncer update 52974 387990 0 0 3 0x14200 cleaner cleaner 21584 515210 0 0 3 0x14200 reaper reaper 97225 267618 0 0 3 0x14200 pgdaemon pagedaemon 73235 286523 0 0 3 0x14200 bored crynlk 82929 465498 0 0 3 0x14200 bored crypto 38534 242506 0 0 3 0x40014200 acpi0 acpi0 66847 6901 0 0 3 0x40014200 idle1 13697 478191 0 0 3 0x14200 bored softnet 87861 184208 0 0 3 0x14200 bored systqmp 63785 82709 0 0 3 0x14200 bored systq 93296 496559 0 0 3 0x40014200 bored softclock 42246 134678 0 0 7 0x40014200 idle0 4724 304831 0 0 3 0x14200 bored smr 1 75252 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 28805 (syz-executor.1) thread 0xffff800020b384c8 (357755) exclusive kernel_lock &kernel_lock r = 1 (0xffffffff82397440) locked @ /syzkaller/managers/setuid/kernel/sys/arch/amd64/amd64/trap.c:161 #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 15592 (syz-executor.0) thread 0xffff800020b14260 (276219) exclusive rrwlock inode r = 0 (0xfffffd8076e782c0) locked @ /syzkaller/managers/setuid/kernel/sys/ufs/ufs/ufs_ihash.c:140 #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 ufs_ihashins+0x6d sys/ufs/ufs/ufs_ihash.c:140 #4 ffs_vget+0x143 sys/ufs/ffs/ffs_vfsops.c:1352 #5 ffs_inode_alloc+0x1cf sys/ufs/ffs/ffs_alloc.c:392 #6 ufs_mkdir+0x10f sys/ufs/ufs/ufs_vnops.c:1164 #7 VOP_MKDIR+0x76 sys/kern/vfs_vops.c:449 #8 domkdirat+0x12d sys/kern/vfs_syscalls.c:2881 #9 syscall+0x5b8 mi_syscall sys/sys/syscall_mi.h:99 [inline] #9 syscall+0x5b8 sys/arch/amd64/amd64/trap.c:574 #10 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd8069d314d8) locked @ /syzkaller/managers/setuid/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 vfs_lookup+0xf5 sys/kern/vfs_lookup.c:387 #6 namei+0x4b2 sys/kern/vfs_lookup.c:224 #7 domkdirat+0x81 sys/kern/vfs_syscalls.c:2866 #8 syscall+0x5b8 mi_syscall sys/sys/syscall_mi.h:99 [inline] #8 syscall+0x5b8 sys/arch/amd64/amd64/trap.c:574 #9 Xsyscall+0x128 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim Kern Lim devbuf 9460 6321K 6321K 78643K 10552 0 0 pcb 25 9K 11K 78643K 487 0 0 rtable 98 3K 3K 78643K 454 0 0 ifaddr 34 9K 9K 78643K 40 0 0 counters 39 33K 33K 78643K 39 0 0 ioctlops 0 0K 2K 78643K 18 0 0 iov 0 0K 16K 78643K 10 0 0 mount 1 1K 1K 78643K 1 0 0 vnodes 1201 75K 75K 78643K 1251 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 28 0 0 dirhash 12 2K 2K 78643K 12 0 0 ACPI 1808 196K 290K 78643K 12628 0 0 file desc 7 21K 33K 78643K 450 0 0 proc 41 38K 58K 78643K 287 0 0 subproc 68 69634K 69634K 78643K 102 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 12 0 0 in_multi 33 2K 2K 78643K 44 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 60 265K 265K 78643K 60 0 0 exec 0 0K 1K 78643K 178 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 74 20K 21K 78643K 1902 0 0 UVM aobj 13 2K 2K 78643K 15 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 20 0 0 NDP 5 0K 0K 78643K 12 0 0 temp 88 2366K 2433K 78643K 3957 0 0 kqueue 0 0K 0K 78643K 12 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 5 0 1 1 0 1 1 0 8 0 inpcbpl 280 104 0 97 1 0 1 1 0 8 0 plimitpl 152 22 0 13 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtentry 112 50 0 10 2 0 2 2 0 8 0 syncache 264 4 0 4 1 1 0 1 0 8 0 tcpcb 544 32 0 28 1 0 1 1 0 8 0 nd6 48 6 0 2 1 0 1 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 226 0 41 12 0 12 12 0 8 0 art_table 32 227 0 41 2 0 2 2 0 8 0 art_node 16 49 0 15 1 0 1 1 0 8 0 semapl 112 26 0 16 1 0 1 1 0 8 0 shmpl 112 13 0 2 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino1pl 128 1916 0 505 46 0 46 46 0 8 0 ffsino 272 1916 0 505 95 0 95 95 0 8 0 nchpl 144 2678 0 1069 61 0 61 61 0 8 0 uvmvnodes 72 1976 0 0 36 0 36 36 0 8 0 vnodes 200 1976 0 0 104 0 104 104 0 8 0 namei 1024 6620 0 6619 2 1 1 1 0 8 0 percpumem 16 30 0 0 1 0 1 1 0 8 0 scxspl 192 6971 0 6970 7 6 1 6 0 8 0 sigapl 432 617 0 602 3 1 2 3 0 8 0 futexpl 56 2596 0 2596 1 0 1 1 0 8 1 knotepl 112 248 0 229 1 0 1 1 0 8 0 kqueuepl 104 248 0 246 1 0 1 1 0 8 0 pipepl 112 276 0 257 3 2 1 2 0 8 0 fdescpl 488 618 0 602 3 0 3 3 0 8 1 filepl 152 2921 0 2823 6 1 5 6 0 8 1 lockfpl 104 45 0 45 2 1 1 1 0 8 1 lockfspl 32 86 0 86 2 1 1 1 0 8 1 sessionpl 112 18 0 8 1 0 1 1 0 8 0 pgrppl 48 22 0 12 1 0 1 1 0 8 0 ucredpl 96 442 0 433 1 0 1 1 0 8 0 zombiepl 144 602 0 602 2 1 1 1 0 8 1 processpl 840 634 0 602 4 0 4 4 0 8 0 procpl 600 1314 0 1272 4 0 4 4 0 8 0 srpgc 64 6 0 6 1 1 0 1 0 8 0 sosppl 128 1 0 1 1 1 0 1 0 8 0 sockpl 384 584 0 565 4 1 3 4 0 8 1 mcl64k 65536 1 0 0 1 0 1 1 0 8 0 mcl16k 16384 1 0 0 1 0 1 1 0 8 0 mcl9k 9216 1 0 0 1 0 1 1 0 8 0 mcl8k 8192 2 0 0 1 0 1 1 0 8 0 mcl4k 4096 4 0 0 1 0 1 1 0 8 0 mcl2k 2048 124 0 0 15 0 15 15 0 8 0 mtagpl 80 1 0 0 1 0 1 1 0 8 0 mbufpl 256 231 0 0 14 0 14 14 0 8 0 bufpl 256 6109 0 1122 312 0 312 312 0 8 0 anonpl 16 58745 0 52106 43 11 32 42 0 125 4 amapchunkpl 152 2575 0 2491 6 2 4 6 0 158 0 amappl16 192 2200 0 1873 27 9 18 27 0 8 1 amappl15 184 48 0 44 1 0 1 1 0 8 0 amappl14 176 47 0 42 2 1 1 1 0 8 0 amappl13 168 221 0 216 1 0 1 1 0 8 0 amappl12 160 15 0 13 1 0 1 1 0 8 0 amappl11 152 18 0 7 1 0 1 1 0 8 0 amappl10 144 55 0 54 2 1 1 1 0 8 0 amappl9 136 763 0 756 1 0 1 1 0 8 0 amappl8 128 335 0 317 1 0 1 1 0 8 0 amappl7 120 30 0 25 1 0 1 1 0 8 0 amappl6 112 50 0 43 1 0 1 1 0 8 0 amappl5 104 110 0 100 1 0 1 1 0 8 0 amappl4 96 1000 0 972 2 1 1 2 0 8 0 amappl3 88 133 0 128 1 0 1 1 0 8 0 amappl2 80 4454 0 4398 2 0 2 2 0 8 0 amappl1 72 22170 0 21733 24 15 9 19 0 8 0 amappl 72 1526 0 1491 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 14 0 2 1 0 1 1 0 8 0 uaddrrnd 24 618 0 602 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 618 0 602 1 0 1 1 0 8 0 vmmpekpl 168 8113 0 8090 2 0 2 2 0 8 0 vmmpepl 168 72480 0 71115 84 19 65 73 0 357 5 vmsppl 360 617 0 602 2 0 2 2 0 8 0 pdppl 4096 1244 0 1204 6 0 6 6 0 8 1 pvpl 32 192444 0 182584 118 14 104 114 0 265 23 pmappl 224 617 0 602 2 1 1 2 0 8 0 extentpl 40 39 0 25 1 0 1 1 0 8 0 phpool 112 467 0 3 14 0 14 14 0 8 0