uvm_fault(0xffffffff82287918, 0xffff8000019a0002, 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(0xffffffff82287918, 0xffff8000019a0002, 0, 1) -> e rtable_satoplen(21,ffff80000199ff59) at rtable_satoplen+0x150 sys/net/rtable.c:888 end trace frame: 0xffff800020c2cb40, count: 0 ddb{1}> trace rtable_satoplen(21,ffff80000199ff59) at rtable_satoplen+0x150 sys/net/rtable.c:888 rtable_lookup(0,ffff80000199ff09,ffff80000199ff59,ffff80000199ff11,21) at rtable_lookup+0xfd sys/net/rtable.c:391 rtm_output(ffff80000199ff00,ffff800020c2cc30,ffff800020c2cc38,21,0) at rtm_output+0x1a7 sys/net/rtsock.c:952 route_output(fffffd806f67e500,fffffd806ca52610,0,0) at route_output+0x79b sys/net/rtsock.c:806 route_usrreq(fffffd806ca52610,9,fffffd806f67e500,0,0,ffff800020b69788) at route_usrreq+0x35d sys/net/rtsock.c:271 sosend(fffffd806ca52610,0,ffff800020c2cef8,0,0,0) at sosend+0x6eb sys/kern/uipc_socket.c:513 sendit(ffff800020b69788,4,ffff800020c2cfb8,0,ffff800020c2d080) at sendit+0x590 sys/kern/uipc_syscalls.c:662 sys_sendto(ffff800020b69788,ffff800020c2d098,ffff800020c2d080) at sys_sendto+0x92 syscall(ffff800020c2d130) at syscall+0x5b8 mi_syscall sys/sys/syscall_mi.h:99 [inline] syscall(ffff800020c2d130) at syscall+0x5b8 sys/arch/amd64/amd64/trap.c:574 Xsyscall(6,0,ffffffffffffffd8,0,6,e205343d010) at Xsyscall+0x128 end of kernel end trace frame: 0xe23238dbf10, count: -10 ddb{1}> show registers rdi 0 rsi 0xaa rbp 0xffff800020c2caa0 rbx 0xffffffffffffff5a rdx 0xffff80000199ff5d rcx 0xffff8000019a0003 rax 0xffff8000019a0003 r8 0x21 r9 0x1 r10 0x4 r11 0xea92545782277124 r12 0 r13 0xffff8000019a0003 r14 0xffffffff821bf7b0 mplsdomain r15 0x4 rip 0xffffffff819822f0 rtable_satoplen+0x150 cs 0x8 rflags 0x10287 __ALIGN_SIZE+0xf287 rsp 0xffff800020c2ca50 ss 0x10 rtable_satoplen+0x150: movzbl 0xffffffffffffffff(%r13),%r12d ddb{1}> show proc PROC (syz-executor.1) pid=473338 stat=onproc flags process=0 proc=4000000 pri=77, usrpri=77, nice=20 forw=0xffffffffffffffff, list=0xffff800020b68270,0xffffffff82377ca8 process=0xffff800020afb700 user=0xffff800020c28000, vmspace=0xfffffd807f00c5a0 estcpu=36, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 17422 286796 4960 0 7 0 syz-executor.1 *17422 473338 4960 0 7 0x4000000 syz-executor.1 60204 393685 1 0 3 0x100083 ttyin getty 25299 164958 0 0 3 0x14200 bored sosplice 4960 282457 84036 0 3 0x82 nanosleep syz-executor.1 44714 136895 84036 0 3 0x2 biowait syz-executor.0 84036 422863 65665 0 3 0x82 thrsleep syz-fuzzer 84036 87837 65665 0 3 0x4000082 nanosleep syz-fuzzer 84036 521441 65665 0 3 0x4000082 thrsleep syz-fuzzer 84036 99591 65665 0 3 0x4000082 thrsleep syz-fuzzer 84036 306326 65665 0 3 0x4000082 thrsleep syz-fuzzer 84036 201329 65665 0 3 0x4000082 kqread syz-fuzzer 84036 106476 65665 0 3 0x4000082 thrsleep syz-fuzzer 84036 25286 65665 0 3 0x4000082 thrsleep syz-fuzzer 84036 110870 65665 0 3 0x4000082 thrsleep syz-fuzzer 84036 433245 65665 0 3 0x4000082 thrsleep syz-fuzzer 65665 352808 1930 0 3 0x10008a pause ksh 1930 206113 82717 0 3 0x92 select sshd 82717 364730 1 0 3 0x80 select sshd 98005 442052 27814 74 3 0x100092 bpf pflogd 27814 50474 1 0 3 0x80 netio pflogd 36071 372852 11676 73 2 0x100090 syslogd 11676 353349 1 0 3 0x100082 netio syslogd 58424 226246 1 77 3 0x100090 poll dhclient 16869 116554 1 0 3 0x80 poll dhclient 51269 189888 0 0 3 0x14200 pgzero zerothread 29273 498411 0 0 3 0x14200 aiodoned aiodoned 66743 130965 0 0 3 0x14200 syncer update 94992 237767 0 0 3 0x14200 cleaner cleaner 46283 29287 0 0 3 0x14200 reaper reaper 33182 244552 0 0 3 0x14200 pgdaemon pagedaemon 52035 257133 0 0 3 0x14200 bored crynlk 39210 409642 0 0 3 0x14200 bored crypto 17742 12048 0 0 3 0x40014200 acpi0 acpi0 14596 381030 0 0 3 0x40014200 idle1 75975 440361 0 0 3 0x14200 bored softnet 23343 100104 0 0 3 0x14200 bored systqmp 58498 463698 0 0 3 0x14200 bored systq 39406 152395 0 0 3 0x40014200 bored softclock 82175 13200 0 0 3 0x40014200 idle0 52400 415974 0 0 3 0x14200 bored smr 1 322370 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 17422 (syz-executor.1) thread 0xffff800020b69788 (473338) exclusive kernel_lock &kernel_lock r = 1 (0xffffffff82362af8) 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 44714 (syz-executor.0) thread 0xffff800020b152c8 (136895) exclusive rrwlock inode r = 0 (0xfffffd806e1f5e68) 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 (0xfffffd8079002e70) 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 dounlinkat+0xa5 sys/kern/vfs_syscalls.c:1673 #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 9495 6409K 6425K 78643K 10749 0 0 pcb 27 9K 10K 78643K 327 0 0 rtable 101 4K 4K 78643K 269 0 0 ifaddr 49 12K 12K 78643K 97 0 0 counters 39 33K 33K 78643K 39 0 0 ioctlops 0 0K 4K 78643K 1475 0 0 iov 0 0K 16K 78643K 71 0 0 mount 1 1K 1K 78643K 1 0 0 vnodes 1196 75K 75K 78643K 1453 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 7 0 0 VM map 2 1K 1K 78643K 2 0 0 sem 12 0K 1K 78643K 81 0 0 dirhash 12 2K 2K 78643K 12 0 0 ACPI 1808 196K 290K 78643K 12628 0 0 file desc 5 13K 25K 78643K 482 0 0 sigio 0 0K 0K 78643K 6 0 0 proc 54 51K 83K 78643K 402 0 0 subproc 64 65538K 67586K 78643K 68 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 67 0 0 in_multi 33 2K 2K 78643K 55 0 0 ether_multi 1 0K 0K 78643K 2 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 54 238K 238K 78643K 54 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 89 21K 30K 78643K 2378 0 0 UVM aobj 37 2K 2K 78643K 41 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 9 0K 0K 78643K 25 0 0 temp 140 2368K 2432K 78643K 4325 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 280 285 0 278 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 42 0 2 2 0 2 2 0 8 0 syncache 264 4 0 4 1 1 0 1 0 8 0 tcpqe 32 22 0 22 1 1 0 1 0 8 0 tcpcb 544 82 0 78 1 0 1 1 0 8 0 rttmr 72 1 0 1 1 1 0 1 0 8 0 nd6 48 4 0 0 1 0 1 1 0 8 0 ppxss 1128 9 0 9 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 17 0 7 1 0 1 1 0 8 0 pfstkey 112 17 0 7 1 0 1 1 0 8 0 pfstate 328 17 0 7 1 0 1 1 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 41 0 7 1 0 1 1 0 8 0 sysvmsgpl 40 12 0 8 1 0 1 1 0 8 0 semupl 112 1 0 1 1 1 0 1 0 8 0 semapl 112 79 0 69 1 0 1 1 0 8 0 shmpl 112 39 0 4 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino1pl 128 2308 0 894 46 0 46 46 0 8 0 ffsino 272 2308 0 894 95 0 95 95 0 8 0 nchpl 144 3224 0 1597 61 0 61 61 0 8 0 uvmvnodes 72 2388 0 0 44 0 44 44 0 8 0 vnodes 200 2388 0 0 126 0 126 126 0 8 0 namei 1024 9130 0 9130 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 9046 0 9045 11 10 1 6 0 8 0 sigapl 432 679 0 664 3 1 2 3 0 8 0 futexpl 56 5982 0 5982 1 0 1 1 0 8 1 knotepl 112 125 0 98 3 2 1 2 0 8 0 kqueuepl 104 103 0 101 1 0 1 1 0 8 0 pipepl 112 430 0 411 2 1 1 1 0 8 0 fdescpl 488 680 0 664 4 1 3 3 0 8 0 filepl 152 3885 0 3784 5 0 5 5 0 8 1 lockfpl 104 176 0 176 2 1 1 1 0 8 1 lockfspl 32 204 0 204 2 1 1 1 0 8 1 sessionpl 112 19 0 8 1 0 1 1 0 8 0 pgrppl 48 37 0 26 1 0 1 1 0 8 0 ucredpl 96 750 0 741 1 0 1 1 0 8 0 zombiepl 144 664 0 664 2 1 1 1 0 8 1 processpl 840 696 0 664 4 0 4 4 0 8 0 procpl 600 1706 0 1664 4 0 4 4 0 8 0 srpgc 64 1 0 1 1 1 0 1 0 8 0 sosppl 128 4 0 4 1 1 0 1 0 8 0 sockpl 384 544 0 523 3 0 3 3 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 6 0 0 1 0 1 1 0 8 0 mcl9k 9216 3 0 0 1 0 1 1 0 8 0 mcl8k 8192 3 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 136 0 0 16 0 16 16 0 8 0 mtagpl 80 1 0 0 1 0 1 1 0 8 0 mbufpl 256 149 0 0 9 0 9 9 0 8 0 bufpl 256 6474 0 1050 339 0 339 339 0 8 0 anonpl 16 78348 0 69344 61 16 45 52 0 125 7 amapchunkpl 152 3561 0 3473 11 2 9 9 0 158 4 amappl16 192 3130 0 2651 44 19 25 36 0 8 0 amappl15 184 1 0 0 1 0 1 1 0 8 0 amappl14 176 30 0 24 1 0 1 1 0 8 0 amappl13 168 469 0 463 1 0 1 1 0 8 0 amappl12 160 13 0 12 1 0 1 1 0 8 0 amappl11 152 211 0 198 1 0 1 1 0 8 0 amappl10 144 71 0 67 1 0 1 1 0 8 0 amappl9 136 601 0 595 1 0 1 1 0 8 0 amappl8 128 137 0 123 1 0 1 1 0 8 0 amappl7 120 249 0 244 1 0 1 1 0 8 0 amappl6 112 60 0 52 1 0 1 1 0 8 0 amappl5 104 136 0 122 1 0 1 1 0 8 0 amappl4 96 323 0 296 2 1 1 2 0 8 0 amappl3 88 390 0 381 1 0 1 1 0 8 0 amappl2 80 5393 0 5338 2 0 2 2 0 8 0 amappl1 72 24223 0 23778 25 15 10 19 0 8 0 amappl 72 1942 0 1907 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 40 0 4 1 0 1 1 0 8 0 uaddrrnd 24 680 0 664 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 680 0 664 1 0 1 1 0 8 0 vmmpekpl 168 9451 0 9426 2 0 2 2 0 8 0 vmmpepl 168 80071 0 78585 98 27 71 79 0 357 4 vmsppl 360 679 0 664 2 0 2 2 0 8 0 pdppl 4096 1368 0 1328 7 1 6 6 0 8 0 pvpl 32 245027 0 232870 144 24 120 134 0 265 16 pmappl 224 679 0 664 2 1 1 2 0 8 0 extentpl 40 39 0 25 1 0 1 1 0 8 0 phpool 112 493 0 5 14 0 14 14 0 8 0