ukernel: 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(0xffffffff822eda28, 0xffff800001a14002, 0, 1) -> e rtable_satoplen(21,ffff800001a13f59) at rtable_satoplen+0x150 sys/net/rtable.c:888 end trace frame: 0xffff800020c4cfc0, count: 0 ddb{1}> trace rtable_satoplen(21,ffff800001a13f59) at rtable_satoplen+0x150 sys/net/rtable.c:888 rtable_lookup(0,ffff800001a13f09,ffff800001a13f59,ffff800001a13f11,21) at rtable_lookup+0xfd sys/net/rtable.c:391 rtm_output(ffff800001a13f00,ffff800020c4d0b0,ffff800020c4d0b8,21,0) at rtm_output+0x10c sys/net/rtsock.c:1122 route_output(fffffd8074f78600,fffffd80782671e0,0,0) at route_output+0x79b sys/net/rtsock.c:806 route_usrreq(fffffd80782671e0,9,fffffd8074f78600,0,0,ffff800020b292d8) at route_usrreq+0x35d sys/net/rtsock.c:271 sosend(fffffd80782671e0,0,ffff800020c4d378,0,0,0) at sosend+0x6eb sys/kern/uipc_socket.c:513 sendit(ffff800020b292d8,4,ffff800020c4d438,0,ffff800020c4d500) at sendit+0x590 sys/kern/uipc_syscalls.c:662 sys_sendto(ffff800020b292d8,ffff800020c4d518,ffff800020c4d500) at sys_sendto+0x92 syscall(ffff800020c4d5b0) at syscall+0x5b8 mi_syscall sys/sys/syscall_mi.h:99 [inline] syscall(ffff800020c4d5b0) at syscall+0x5b8 sys/arch/amd64/amd64/trap.c:574 Xsyscall(6,0,ffffffffffffffd8,0,6,43a063ae0d8) at Xsyscall+0x128 end of kernel end trace frame: 0x43c49286f30, count: -10 ddb{1}> show registers rdi 0 rsi 0xaa rbp 0xffff800020c4cf20 rbx 0xffffffffffffff5a rdx 0xffff800001a13f5d rcx 0xffff800001a14003 rax 0xffff800001a14003 r8 0x21 r9 0x1 r10 0x4 r11 0xc8281245c3f485e5 r12 0 r13 0xffff800001a14003 r14 0xffffffff821ee000 mplsdomain r15 0x4 rip 0xffffffff81847d60 rtable_satoplen+0x150 cs 0x8 rflags 0x10287 __ALIGN_SIZE+0xf287 rsp 0xffff800020c4ced0 ss 0x10 rtable_satoplen+0x150: movzbl 0xffffffffffffffff(%r13),%r12d ddb{1}> show proc PROC (syz-executor.1) pid=485695 stat=onproc flags process=0 proc=4000000 pri=79, usrpri=79, nice=20 forw=0xffffffffffffffff, list=0xffff800020b29080,0xffffffff823e1f48 process=0xffff800020aead28 user=0xffff800020c48000, vmspace=0xfffffd807effd5a0 estcpu=36, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 42009 311139 25913 0 2 0 syz-executor.1 42009 474614 25913 0 3 0x4000080 fsleep syz-executor.1 *42009 485695 25913 0 7 0x4000000 syz-executor.1 70616 328471 1 0 3 0x100083 ttyin getty 64323 493438 0 0 3 0x14200 bored sosplice 25913 468075 32052 0 3 0x82 nanosleep syz-executor.1 27895 498342 32052 0 7 0x2 syz-executor.0 32052 202791 48119 0 3 0x82 thrsleep syz-fuzzer 32052 213080 48119 0 3 0x4000082 nanosleep syz-fuzzer 32052 494877 48119 0 3 0x4000082 thrsleep syz-fuzzer 32052 202781 48119 0 3 0x4000082 thrsleep syz-fuzzer 32052 411989 48119 0 3 0x4000082 thrsleep syz-fuzzer 32052 65962 48119 0 3 0x4000082 kqread syz-fuzzer 32052 34213 48119 0 3 0x4000082 thrsleep syz-fuzzer 32052 443704 48119 0 3 0x4000082 thrsleep syz-fuzzer 32052 142900 48119 0 3 0x4000082 thrsleep syz-fuzzer 32052 382956 48119 0 3 0x4000082 thrsleep syz-fuzzer 32052 500472 48119 0 3 0x4000082 thrsleep syz-fuzzer 48119 100125 98629 0 3 0x10008a pause ksh 98629 96904 59170 0 3 0x92 select sshd 59170 45274 1 0 3 0x80 select sshd 27376 145571 34713 74 3 0x100092 bpf pflogd 34713 377587 1 0 3 0x80 netio pflogd 77836 31849 91859 73 2 0x100090 syslogd 91859 469981 1 0 3 0x100082 netio syslogd 70433 349041 1 77 3 0x100090 poll dhclient 95675 379876 1 0 3 0x80 poll dhclient 66561 23403 0 0 2 0x14200 zerothread 51238 27999 0 0 3 0x14200 aiodoned aiodoned 67601 333924 0 0 3 0x14200 syncer update 36475 364308 0 0 3 0x14200 cleaner cleaner 65466 378793 0 0 3 0x14200 reaper reaper 52256 136163 0 0 3 0x14200 pgdaemon pagedaemon 24795 508818 0 0 3 0x14200 bored crynlk 80705 196644 0 0 3 0x14200 bored crypto 81019 54428 0 0 3 0x40014200 acpi0 acpi0 55217 184661 0 0 3 0x40014200 idle1 43961 279399 0 0 3 0x14200 bored softnet 76044 263910 0 0 3 0x14200 bored systqmp 30233 445230 0 0 3 0x14200 bored systq 68479 113335 0 0 3 0x40014200 bored softclock 89916 156034 0 0 3 0x40014200 idle0 60226 428694 0 0 3 0x14200 bored smr 1 43248 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 42009 (syz-executor.1) thread 0xffff800020b292d8 (485695) exclusive kernel_lock &kernel_lock r = 1 (0xffffffff823688c8) 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 27895 (syz-executor.0) thread 0xffff800020b75c30 (498342) exclusive rrwlock inode r = 0 (0xfffffd806e2991a8) 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 (0xfffffd8068c61e70) 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 9573 6578K 6594K 78643K 11903 0 0 pcb 27 10K 12K 78643K 2337 0 0 rtable 104 4K 4K 78643K 872 0 0 ifaddr 76 16K 17K 78643K 369 0 0 counters 39 33K 33K 78643K 39 0 0 ioctlops 0 0K 4K 78643K 1522 0 0 iov 0 0K 24K 78643K 630 0 0 mount 1 1K 1K 78643K 1 0 0 vnodes 1208 76K 76K 78643K 3636 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 71 0 0 VM map 2 1K 1K 78643K 2 0 0 sem 12 0K 1K 78643K 617 0 0 dirhash 12 2K 2K 78643K 12 0 0 ACPI 1808 196K 290K 78643K 12628 0 0 file desc 5 13K 21K 78643K 4253 0 0 sigio 0 0K 0K 78643K 72 0 0 proc 54 51K 71K 78643K 879 0 0 subproc 64 65538K 67586K 78643K 100 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 566 0 0 in_multi 33 2K 2K 78643K 217 0 0 ether_multi 1 0K 0K 78643K 40 0 0 mrt 0 0K 0K 78643K 47 0 0 ISOFS mount 1 32K 32K 78643K 1 0 0 MSDOSFS mount 1 16K 16K 78643K 1 0 0 ttys 114 503K 503K 78643K 114 0 0 exec 0 0K 1K 78643K 602 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 108 22K 31K 78643K 15008 0 0 UVM aobj 130 4K 4K 78643K 144 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 250 0 0 NDP 17 0K 0K 78643K 112 0 0 temp 208 2380K 3020K 78643K 14292 0 0 kqueue 0 0K 0K 78643K 39 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 4 0 0 1 0 1 1 0 8 0 inpcbpl 280 2358 0 2351 3 2 1 2 0 8 0 plimitpl 152 153 0 145 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtentry 112 59 0 19 2 0 2 2 0 8 0 syncache 264 4 0 4 1 1 0 1 0 8 0 tcpcb 544 780 0 776 1 0 1 1 0 8 0 rttmr 72 20 0 20 7 7 0 1 0 8 0 nd6 48 4 0 0 1 0 1 1 0 8 0 ppxss 1128 71 0 70 3 2 1 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 37 1 0 1 1 0 8 0 pfstkey 112 48 0 37 1 0 1 1 0 8 0 pfstate 328 48 0 37 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 256 185 0 0 12 0 12 12 0 8 0 art_table 32 186 0 0 2 0 2 2 0 8 0 art_node 16 55 0 21 1 0 1 1 0 8 0 sysvmsgpl 40 22 0 10 1 0 1 1 0 8 0 semupl 112 4 0 4 1 1 0 1 0 8 0 semapl 112 615 0 605 1 0 1 1 0 8 0 shmpl 112 142 0 14 4 0 4 4 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino1pl 128 9653 0 8179 48 0 48 48 0 8 0 ffsino 272 9653 0 8179 100 1 99 99 0 8 0 nchpl 144 15976 0 14345 61 0 61 61 0 8 0 uvmvnodes 72 5926 0 0 108 0 108 108 0 8 0 vnodes 200 5926 0 0 312 0 312 312 0 8 0 namei 1024 50733 0 50732 2 1 1 1 0 8 0 percpumem 16 30 0 0 1 0 1 1 0 8 0 scsiplug 64 11 0 11 6 6 0 1 0 8 0 scxspl 192 55207 0 55207 28 26 2 6 0 8 2 sigapl 432 4451 0 4436 2 0 2 2 0 8 0 futexpl 56 53755 0 53754 1 0 1 1 0 8 0 knotepl 112 1003 0 976 7 6 1 2 0 8 0 kqueuepl 104 1273 0 1271 1 0 1 1 0 8 0 pipepl 112 3188 0 3169 11 10 1 2 0 8 0 fdescpl 488 4452 0 4436 4 1 3 3 0 8 0 filepl 152 29313 0 29212 15 10 5 7 0 8 1 lockfpl 104 1592 0 1592 5 4 1 1 0 8 1 lockfspl 32 2189 0 2189 5 4 1 1 0 8 1 sessionpl 112 20 0 9 1 0 1 1 0 8 0 pgrppl 48 59 0 48 1 0 1 1 0 8 0 ucredpl 96 8165 0 8156 1 0 1 1 0 8 0 zombiepl 144 4436 0 4436 2 1 1 1 0 8 1 processpl 840 4468 0 4436 4 0 4 4 0 8 0 procpl 600 14062 0 14018 8 4 4 5 0 8 0 srpgc 64 10 0 10 7 7 0 1 0 8 0 sosppl 128 53 0 53 18 18 0 1 0 8 0 sockpl 384 4419 0 4398 13 10 3 4 0 8 0 mcl64k 65536 458 0 0 56 27 29 31 0 8 1 mcl16k 16384 9 0 0 2 0 2 2 0 8 0 mcl12k 12288 37 0 0 2 0 2 2 0 8 0 mcl9k 9216 21 0 0 2 0 2 2 0 8 0 mcl8k 8192 17 0 0 3 0 3 3 0 8 0 mcl4k 4096 25 0 0 3 0 3 3 0 8 0 mcl2k2 2112 7 0 0 1 0 1 1 0 8 0 mcl2k 2048 144 0 0 16 1 15 16 0 8 0 mtagpl 80 1 0 0 1 0 1 1 0 8 0 mbufpl 256 574 0 0 19 0 19 19 0 8 0 bufpl 256 16421 0 9433 437 0 437 437 0 8 0 anonpl 16 493412 0 484209 194 145 49 55 0 125 8 amapchunkpl 152 27343 0 27251 61 56 5 9 0 158 0 amappl16 192 24350 0 23861 217 189 28 37 0 8 3 amappl15 184 2 0 1 1 0 1 1 0 8 0 amappl14 176 2204 0 2198 1 0 1 1 0 8 0 amappl13 168 30 0 27 1 0 1 1 0 8 0 amappl12 160 2180 0 2178 2 1 1 1 0 8 0 amappl11 152 217 0 203 1 0 1 1 0 8 0 amappl10 144 70 0 64 1 0 1 1 0 8 0 amappl9 136 364 0 361 1 0 1 1 0 8 0 amappl8 128 2246 0 2212 2 0 2 2 0 8 0 amappl7 120 27 0 24 1 0 1 1 0 8 0 amappl6 112 2230 0 2223 1 0 1 1 0 8 0 amappl5 104 162 0 146 1 0 1 1 0 8 0 amappl4 96 355 0 329 2 1 1 2 0 8 0 amappl3 88 639 0 634 1 0 1 1 0 8 0 amappl2 80 43211 0 43153 2 0 2 2 0 8 0 amappl1 72 108701 0 108245 24 14 10 19 0 8 0 amappl 72 14347 0 14310 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 64 143 0 14 3 0 3 3 0 8 0 uaddrrnd 24 4452 0 4436 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 4452 0 4436 1 0 1 1 0 8 0 vmmpekpl 168 40710 0 40686 2 0 2 2 0 8 0 vmmpepl 168 482101 0 480576 210 137 73 82 0 357 1 vmsppl 360 4451 0 4436 2 0 2 2 0 8 0 pdppl 4096 8912 0 8872 7 1 6 6 0 8 0 pvpl 32 1340476 0 1328079 347 206 141 146 0 265 35 pmappl 224 4451 0 4436 2 1 1 2 0 8 0 extentpl 40 39 0 25 1 0 1 1 0 8 0 phpool 112 666 0 34 19 0 19 19 0 8 0