uvm_fault(0xffffffff8233d5b8, 0xffff80000399b002, 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(0xffffffff8233d5b8, 0xffff80000399b002, 0, 1) -> e rtable_satoplen(21,ffff80000399af59) at rtable_satoplen+0x150 sys/net/rtable.c:888 end trace frame: 0xffff800020c06ad0, count: 0 ddb{1}> trace rtable_satoplen(21,ffff80000399af59) at rtable_satoplen+0x150 sys/net/rtable.c:888 rtable_lookup(0,ffff80000399af09,ffff80000399af59,ffff80000399af11,21) at rtable_lookup+0xfd sys/net/rtable.c:391 rtm_output(ffff80000399af00,ffff800020c06bc0,ffff800020c06bc8,21,0) at rtm_output+0x1a7 sys/net/rtsock.c:952 route_output(fffffd8076cba300,fffffd806f739600,0,0) at route_output+0x79b sys/net/rtsock.c:806 route_usrreq(fffffd806f739600,9,fffffd8076cba300,0,0,ffff800020b51c38) at route_usrreq+0x35d sys/net/rtsock.c:271 sosend(fffffd806f739600,0,ffff800020c06e88,0,0,0) at sosend+0x6eb sys/kern/uipc_socket.c:513 sendit(ffff800020b51c38,3,ffff800020c06f48,0,ffff800020c07010) at sendit+0x590 sys/kern/uipc_syscalls.c:662 sys_sendto(ffff800020b51c38,ffff800020c07028,ffff800020c07010) at sys_sendto+0x92 syscall(ffff800020c070c0) at syscall+0x5b8 mi_syscall sys/sys/syscall_mi.h:99 [inline] syscall(ffff800020c070c0) at syscall+0x5b8 sys/arch/amd64/amd64/trap.c:574 Xsyscall(6,0,ffffffffffffffd8,0,6,b8a15f39010) at Xsyscall+0x128 end of kernel end trace frame: 0xb8c20e93a70, count: -10 ddb{1}> show registers rdi 0 rsi 0xaa rbp 0xffff800020c06a30 rbx 0xffffffffffffff5a rdx 0xffff80000399af5d rcx 0xffff80000399b003 rax 0xffff80000399b003 r8 0x21 r9 0x1 r10 0x4 r11 0xaf4c99e46a5d387c r12 0 r13 0xffff80000399b003 r14 0xffffffff821953e0 mplsdomain r15 0x4 rip 0xffffffff81c53010 rtable_satoplen+0x150 cs 0x8 rflags 0x10287 __ALIGN_SIZE+0xf287 rsp 0xffff800020c069e0 ss 0x10 rtable_satoplen+0x150: movzbl 0xffffffffffffffff(%r13),%r12d ddb{1}> show proc PROC (syz-executor.0) pid=382375 stat=onproc flags process=0 proc=4000000 pri=86, usrpri=86, nice=20 forw=0xffffffffffffffff, list=0xffff800020b51788,0xffffffff823bbde8 process=0xffff800020b7c360 user=0xffff800020c02000, vmspace=0xfffffd807f00c438 estcpu=36, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 81618 352582 60621 0 7 0 syz-executor.0 *81618 382375 60621 0 7 0x4000000 syz-executor.0 89909 329293 45751 0 3 0x2 biowait syz-executor.1 93886 143318 0 0 3 0x14200 bored sosplice 60621 351248 45751 0 3 0x82 nanosleep syz-executor.0 45751 486670 23196 0 3 0x82 kqread syz-fuzzer 45751 16437 23196 0 3 0x4000082 nanosleep syz-fuzzer 45751 143063 23196 0 3 0x4000082 thrsleep syz-fuzzer 45751 78679 23196 0 3 0x4000082 thrsleep syz-fuzzer 45751 136937 23196 0 3 0x4000082 thrsleep syz-fuzzer 45751 516672 23196 0 3 0x4000082 thrsleep syz-fuzzer 45751 53649 23196 0 3 0x4000082 nanosleep syz-fuzzer 45751 426702 23196 0 3 0x4000082 thrsleep syz-fuzzer 45751 137690 23196 0 3 0x4000082 thrsleep syz-fuzzer 45751 377420 23196 0 3 0x4000082 thrsleep syz-fuzzer 23196 502471 26584 0 3 0x10008a pause ksh 26584 239403 16546 0 3 0x92 select sshd 86964 407757 1 0 3 0x100083 ttyin getty 16546 174854 1 0 3 0x80 select sshd 75326 204135 52350 74 3 0x100092 bpf pflogd 52350 461458 1 0 3 0x80 netio pflogd 40686 396606 5239 73 2 0x100090 syslogd 5239 269759 1 0 3 0x100082 netio syslogd 73249 51551 1 77 3 0x100090 poll dhclient 37929 221275 1 0 3 0x80 poll dhclient 3008 125419 0 0 3 0x14200 pgzero zerothread 92161 91588 0 0 3 0x14200 aiodoned aiodoned 9325 478074 0 0 3 0x14200 syncer update 38367 85059 0 0 3 0x14200 cleaner cleaner 46794 421756 0 0 3 0x14200 reaper reaper 20454 232480 0 0 3 0x14200 pgdaemon pagedaemon 10917 226976 0 0 3 0x14200 bored crynlk 92590 498465 0 0 3 0x14200 bored crypto 69128 11575 0 0 3 0x40014200 acpi0 acpi0 20858 369790 0 0 3 0x40014200 idle1 1710 250512 0 0 3 0x14200 bored softnet 13626 295747 0 0 3 0x14200 bored systqmp 48549 424133 0 0 3 0x14200 bored systq 44334 381420 0 0 3 0x40014200 bored softclock 61480 141720 0 0 3 0x40014200 idle0 61821 398336 0 0 3 0x14200 bored smr 1 339496 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 81618 (syz-executor.0) thread 0xffff800020b51c38 (382375) exclusive kernel_lock &kernel_lock r = 1 (0xffffffff823bcca8) locked @ /syzkaller/managers/multicore/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 89909 (syz-executor.1) thread 0xffff800020b50270 (329293) exclusive rrwlock inode r = 0 (0xfffffd8068ed0e78) locked @ /syzkaller/managers/multicore/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 (0xfffffd8068ed0a38) 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 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 9498 6407K 6424K 78643K 10714 0 0 pcb 26 9K 10K 78643K 240 0 0 rtable 101 4K 4K 78643K 360 0 0 ifaddr 53 12K 13K 78643K 108 0 0 counters 39 33K 33K 78643K 39 0 0 ioctlops 0 0K 4K 78643K 1474 0 0 iov 0 0K 12K 78643K 38 0 0 mount 1 1K 1K 78643K 1 0 0 vnodes 1197 75K 76K 78643K 1402 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 5 0 0 VM map 2 1K 1K 78643K 2 0 0 sem 12 0K 0K 78643K 49 0 0 dirhash 12 2K 2K 78643K 12 0 0 ACPI 1808 196K 290K 78643K 12628 0 0 file desc 5 13K 21K 78643K 373 0 0 sigio 0 0K 0K 78643K 9 0 0 proc 53 50K 71K 78643K 428 0 0 subproc 64 65538K 67586K 78643K 170 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 51 0 0 in_multi 33 2K 2K 78643K 81 0 0 ether_multi 1 0K 0K 78643K 7 0 0 mrt 0 0K 0K 78643K 4 0 0 ISOFS mount 1 32K 32K 78643K 1 0 0 MSDOSFS mount 1 16K 16K 78643K 1 0 0 ttys 48 212K 212K 78643K 48 0 0 exec 0 0K 1K 78643K 235 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 86 21K 21K 78643K 2046 0 0 UVM aobj 12 2K 2K 78643K 13 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 9 0 0 NDP 10 0K 0K 78643K 32 0 0 temp 157 2375K 2439K 78643K 4256 0 0 kqueue 0 0K 0K 78643K 6 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 7 0 3 1 0 1 1 0 8 0 inpcbpl 280 226 0 219 1 0 1 1 0 8 0 plimitpl 152 27 0 19 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtentry 112 72 0 32 2 0 2 2 0 8 0 syncache 264 4 0 4 1 1 0 1 0 8 0 tcpcb 544 98 0 94 1 0 1 1 0 8 0 nd6 48 10 0 6 1 0 1 1 0 8 0 ppxss 1128 8 0 8 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 21 0 7 1 0 1 1 0 8 0 pfstkey 112 21 0 7 1 0 1 1 0 8 0 pfstate 328 21 0 7 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 256 309 0 121 12 0 12 12 0 8 0 art_table 32 310 0 121 2 0 2 2 0 8 0 art_node 16 67 0 33 1 0 1 1 0 8 0 sysvmsgpl 40 14 0 4 1 0 1 1 0 8 0 semapl 112 47 0 37 1 0 1 1 0 8 0 shmpl 112 11 0 1 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino1pl 128 2029 0 601 47 0 47 47 0 8 0 ffsino 272 2029 0 601 96 0 96 96 0 8 0 nchpl 144 2770 0 1130 62 0 62 62 0 8 1 uvmvnodes 72 2165 0 0 40 0 40 40 0 8 0 vnodes 200 2165 0 0 114 0 114 114 0 8 0 namei 1024 7915 0 7914 2 1 1 1 0 8 0 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 7402 0 7401 8 7 1 6 0 8 0 sigapl 432 560 0 545 2 0 2 2 0 8 0 futexpl 56 4305 0 4305 1 0 1 1 0 8 1 knotepl 112 185 0 158 3 2 1 2 0 8 0 kqueuepl 104 95 0 93 1 0 1 1 0 8 0 pipepl 112 454 0 435 3 2 1 2 0 8 0 fdescpl 488 561 0 545 3 0 3 3 0 8 0 filepl 152 3401 0 3301 6 1 5 6 0 8 1 lockfpl 104 104 0 104 2 1 1 1 0 8 1 lockfspl 32 62 0 62 2 1 1 1 0 8 1 sessionpl 112 21 0 10 1 0 1 1 0 8 0 pgrppl 48 27 0 16 1 0 1 1 0 8 0 ucredpl 96 537 0 528 1 0 1 1 0 8 0 zombiepl 144 545 0 545 2 1 1 1 0 8 1 processpl 840 577 0 545 4 0 4 4 0 8 0 procpl 600 1333 0 1291 4 0 4 4 0 8 0 srpgc 64 18 0 18 3 2 1 1 0 8 1 sosppl 128 10 0 10 2 1 1 1 0 8 1 sockpl 384 422 0 402 3 0 3 3 0 8 1 mcl64k 65536 2 0 0 1 0 1 1 0 8 0 mcl16k 16384 1 0 0 1 0 1 1 0 8 0 mcl12k 12288 1 0 0 1 0 1 1 0 8 0 mcl9k 9216 5 0 0 1 0 1 1 0 8 0 mcl8k 8192 2 0 0 1 0 1 1 0 8 0 mcl4k 4096 5 0 0 1 0 1 1 0 8 0 mcl2k2 2112 1 0 0 1 0 1 1 0 8 0 mcl2k 2048 126 0 0 15 0 15 15 0 8 0 mtagpl 80 1 0 0 1 0 1 1 0 8 0 mbufpl 256 149 0 0 8 0 8 8 0 8 0 bufpl 256 6148 0 1043 320 0 320 320 0 8 0 anonpl 16 62340 0 54072 51 12 39 49 0 125 1 amapchunkpl 152 2865 0 2778 6 1 5 5 0 158 0 amappl16 192 2186 0 1710 34 8 26 34 0 8 2 amappl15 184 1 0 0 1 0 1 1 0 8 0 amappl14 176 126 0 121 1 0 1 1 0 8 0 amappl13 168 342 0 335 1 0 1 1 0 8 0 amappl12 160 148 0 145 1 0 1 1 0 8 0 amappl11 152 229 0 215 1 0 1 1 0 8 0 amappl10 144 73 0 67 1 0 1 1 0 8 0 amappl9 136 374 0 371 1 0 1 1 0 8 0 amappl8 128 235 0 215 1 0 1 1 0 8 0 amappl7 120 190 0 182 1 0 1 1 0 8 0 amappl6 112 158 0 149 1 0 1 1 0 8 0 amappl5 104 116 0 102 1 0 1 1 0 8 0 amappl4 96 322 0 296 2 1 1 2 0 8 0 amappl3 88 142 0 137 1 0 1 1 0 8 0 amappl2 80 4012 0 3954 2 0 2 2 0 8 0 amappl1 72 21779 0 21335 26 17 9 19 0 8 0 amappl 72 1588 0 1553 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 12 0 1 1 0 1 1 0 8 0 uaddrrnd 24 561 0 545 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 561 0 545 1 0 1 1 0 8 0 vmmpekpl 168 8602 0 8576 2 0 2 2 0 8 0 vmmpepl 168 66831 0 65343 101 19 82 82 0 357 15 vmsppl 360 560 0 545 2 0 2 2 0 8 0 pdppl 4096 1129 0 1090 6 0 6 6 0 8 1 pvpl 32 200033 0 188608 134 17 117 127 0 265 18 pmappl 224 560 0 545 2 1 1 2 0 8 0 extentpl 40 39 0 25 1 0 1 1 0 8 0 phpool 112 472 0 4 14 0 14 14 0 8 0