uvm_fault(0xffffffff822eda28, 0xffff80000299b002, 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(0xffffffff822eda28, 0xffff80000299b002, 0, 1) -> e rtable_satoplen(21,ffff80000299af59) at rtable_satoplen+0x150 sys/net/rtable.c:888 end trace frame: 0xffff800020c336c0, count: 0 ddb{0}> trace rtable_satoplen(21,ffff80000299af59) at rtable_satoplen+0x150 sys/net/rtable.c:888 rtable_lookup(0,ffff80000299af09,ffff80000299af59,ffff80000299af11,21) at rtable_lookup+0xfd sys/net/rtable.c:391 rtm_output(ffff80000299af00,ffff800020c337b0,ffff800020c337b8,21,0) at rtm_output+0x1a7 sys/net/rtsock.c:952 route_output(fffffd807f01d300,fffffd806f728480,0,0) at route_output+0x79b sys/net/rtsock.c:806 route_usrreq(fffffd806f728480,9,fffffd807f01d300,0,0,ffff800020b284c8) at route_usrreq+0x35d sys/net/rtsock.c:271 sosend(fffffd806f728480,0,ffff800020c33a78,0,0,2) at sosend+0x6eb sys/kern/uipc_socket.c:513 sendit(ffff800020b284c8,3,ffff800020c33b38,2,ffff800020c33c00) at sendit+0x590 sys/kern/uipc_syscalls.c:662 sys_sendto(ffff800020b284c8,ffff800020c33c18,ffff800020c33c00) at sys_sendto+0x92 syscall(ffff800020c33cb0) at syscall+0x5b8 mi_syscall sys/sys/syscall_mi.h:99 [inline] syscall(ffff800020c33cb0) at syscall+0x5b8 sys/arch/amd64/amd64/trap.c:574 Xsyscall(6,0,ffffffffffffffd8,0,6,f302e447010) at Xsyscall+0x128 end of kernel end trace frame: 0xf32e26b6fd0, count: -10 ddb{0}> show registers rdi 0 rsi 0xaa rbp 0xffff800020c33620 rbx 0xffffffffffffff5a rdx 0xffff80000299af5d rcx 0xffff80000299b003 rax 0xffff80000299b003 r8 0x21 r9 0x1 r10 0x4 r11 0xffb2642339687f08 r12 0 r13 0xffff80000299b003 r14 0xffffffff821ee000 mplsdomain r15 0x4 rip 0xffffffff81847d60 rtable_satoplen+0x150 cs 0x8 rflags 0x10287 __ALIGN_SIZE+0xf287 rsp 0xffff800020c335d0 ss 0x10 rtable_satoplen+0x150: movzbl 0xffffffffffffffff(%r13),%r12d ddb{0}> show proc PROC (syz-executor.0) pid=362962 stat=onproc flags process=0 proc=4000000 pri=72, usrpri=72, nice=20 forw=0xffffffffffffffff, list=0xffff800020b28e28,0xffffffff823e1f48 process=0xffff800020b7c9f0 user=0xffff800020c2e000, vmspace=0xfffffd807effd168 estcpu=22, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 58671 423364 60158 0 2 0 syz-executor.0 *58671 362962 60158 0 7 0x4000000 syz-executor.0 98817 243634 0 0 3 0x14200 bored sosplice 60158 9164 51478 0 3 0x82 nanosleep syz-executor.0 42842 210271 51478 0 2 0x2 syz-executor.1 51478 419347 84546 0 3 0x82 thrsleep syz-fuzzer 51478 259654 84546 0 3 0x4000082 nanosleep syz-fuzzer 51478 503379 84546 0 3 0x4000082 thrsleep syz-fuzzer 51478 123200 84546 0 3 0x4000082 thrsleep syz-fuzzer 51478 201814 84546 0 3 0x4000082 thrsleep syz-fuzzer 51478 438846 84546 0 3 0x4000082 thrsleep syz-fuzzer 51478 224693 84546 0 3 0x4000082 thrsleep syz-fuzzer 51478 14152 84546 0 3 0x4000082 thrsleep syz-fuzzer 51478 496444 84546 0 3 0x4000082 nanosleep syz-fuzzer 51478 448744 84546 0 3 0x4000082 thrsleep syz-fuzzer 84546 398846 94154 0 3 0x10008a pause ksh 94154 302006 99528 0 3 0x92 select sshd 88773 203696 1 0 3 0x100083 ttyin getty 99528 134324 1 0 3 0x80 select sshd 83387 372052 82269 74 3 0x100092 bpf pflogd 82269 232994 1 0 3 0x80 netio pflogd 73098 298882 62668 73 7 0x100090 syslogd 62668 23381 1 0 3 0x100082 netio syslogd 82461 308225 1 77 3 0x100090 poll dhclient 92877 111564 1 0 3 0x80 poll dhclient 25470 255700 0 0 3 0x14200 pgzero zerothread 62768 376326 0 0 3 0x14200 aiodoned aiodoned 1807 173205 0 0 3 0x14200 syncer update 29093 484503 0 0 3 0x14200 cleaner cleaner 15398 145580 0 0 3 0x14200 reaper reaper 39143 98146 0 0 3 0x14200 pgdaemon pagedaemon 16854 379363 0 0 3 0x14200 bored crynlk 98560 52079 0 0 3 0x14200 bored crypto 67296 174127 0 0 3 0x40014200 acpi0 acpi0 45967 360457 0 0 3 0x40014200 idle1 43558 107904 0 0 3 0x14200 bored softnet 63218 255344 0 0 3 0x14200 bored systqmp 92762 34329 0 0 3 0x14200 bored systq 61633 211658 0 0 3 0x40014200 bored softclock 53914 363830 0 0 3 0x40014200 idle0 53896 457040 0 0 3 0x14200 bored smr 1 523645 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 58671 (syz-executor.0) thread 0xffff800020b284c8 (362962) exclusive kernel_lock &kernel_lock r = 1 (0xffffffff823688c8) locked @ /syzkaller/managers/multicore/kernel/sys/scsi/scsi_base.c:256 #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 42842 (syz-executor.1) thread 0xffff800020b29530 (210271) exclusive rrwlock inode r = 0 (0xfffffd8068c4f5f0) 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 (0xfffffd8068c4fb40) 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{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim Kern Lim devbuf 9485 6402K 6410K 78643K 10619 0 0 pcb 26 9K 11K 78643K 130 0 0 rtable 101 4K 4K 78643K 236 0 0 ifaddr 46 11K 12K 78643K 65 0 0 counters 39 33K 33K 78643K 39 0 0 ioctlops 0 0K 4K 78643K 1470 0 0 iov 0 0K 16K 78643K 22 0 0 mount 1 1K 1K 78643K 1 0 0 vnodes 1196 75K 75K 78643K 1323 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 21 0 0 dirhash 12 2K 2K 78643K 12 0 0 ACPI 1808 196K 290K 78643K 12628 0 0 file desc 5 13K 17K 78643K 206 0 0 sigio 0 0K 0K 78643K 2 0 0 proc 53 50K 71K 78643K 362 0 0 subproc 64 65538K 67586K 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 35 0 0 in_multi 33 2K 2K 78643K 57 0 0 ether_multi 1 0K 0K 78643K 3 0 0 mrt 0 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 54 238K 238K 78643K 54 0 0 exec 0 0K 1K 78643K 209 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 85 20K 29K 78643K 1482 0 0 UVM aobj 7 2K 2K 78643K 11 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 6 0 0 NDP 8 0K 0K 78643K 18 0 0 temp 117 2368K 2432K 78643K 3598 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 5 0 1 1 0 1 1 0 8 0 inpcbpl 280 153 0 146 1 0 1 1 0 8 0 plimitpl 152 22 0 14 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 tcpqe 32 5 0 5 1 1 0 1 0 8 0 tcpcb 544 42 0 38 1 0 1 1 0 8 0 nd6 48 6 0 2 1 0 1 1 0 8 0 ppxss 1128 3 0 3 1 0 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 13 0 2 1 0 1 1 0 8 0 pfstkey 112 13 0 2 1 0 1 1 0 8 0 pfstate 328 13 0 2 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 256 226 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 sysvmsgpl 40 2 0 0 1 0 1 1 0 8 0 semupl 112 1 0 1 1 0 1 1 0 8 1 semapl 112 17 0 7 1 0 1 1 0 8 0 shmpl 112 9 0 4 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino1pl 128 1781 0 370 46 0 46 46 0 8 0 ffsino 272 1781 0 370 95 0 95 95 0 8 0 nchpl 144 2272 0 658 61 0 61 61 0 8 0 uvmvnodes 72 1851 0 0 34 0 34 34 0 8 0 vnodes 200 1851 0 0 98 0 98 98 0 8 0 namei 1024 6053 0 6052 2 1 1 1 0 8 0 percpumem 16 30 0 0 1 0 1 1 0 8 0 scxspl 192 5615 0 5615 8 7 1 6 0 8 1 sigapl 432 399 0 384 2 0 2 2 0 8 0 futexpl 56 2066 0 2066 1 0 1 1 0 8 1 knotepl 112 100 0 73 2 1 1 2 0 8 0 kqueuepl 104 46 0 44 1 0 1 1 0 8 0 pipepl 112 236 0 217 2 1 1 1 0 8 0 fdescpl 488 400 0 384 3 0 3 3 0 8 0 filepl 152 2156 0 2056 5 0 5 5 0 8 1 lockfpl 104 60 0 60 2 1 1 1 0 8 1 lockfspl 32 92 0 92 2 1 1 1 0 8 1 sessionpl 112 19 0 8 1 0 1 1 0 8 0 pgrppl 48 21 0 10 1 0 1 1 0 8 0 ucredpl 96 386 0 377 1 0 1 1 0 8 0 zombiepl 144 384 0 384 2 1 1 1 0 8 1 processpl 840 416 0 384 4 0 4 4 0 8 0 procpl 600 825 0 783 4 0 4 4 0 8 0 srpgc 64 6 0 6 1 1 0 1 0 8 0 sosppl 128 4 0 4 1 0 1 1 0 8 1 sockpl 384 254 0 234 4 1 3 4 0 8 1 mcl64k 65536 3 0 0 1 0 1 1 0 8 0 mcl16k 16384 2 0 0 1 0 1 1 0 8 0 mcl12k 12288 1 0 0 1 0 1 1 0 8 0 mcl9k 9216 4 0 0 1 0 1 1 0 8 0 mcl8k 8192 1 0 0 1 0 1 1 0 8 0 mcl4k 4096 3 0 0 1 0 1 1 0 8 0 mcl2k 2048 130 0 0 16 1 15 16 0 8 0 mtagpl 80 1 0 0 1 0 1 1 0 8 0 mbufpl 256 147 0 0 9 0 9 9 0 8 0 bufpl 256 5706 0 1043 292 0 292 292 0 8 0 anonpl 16 51164 0 42999 51 9 42 49 0 125 7 amapchunkpl 152 2129 0 2041 9 0 9 9 0 158 4 amappl16 192 1503 0 1064 33 9 24 33 0 8 1 amappl15 184 94 0 91 1 0 1 1 0 8 0 amappl14 176 35 0 29 1 0 1 1 0 8 0 amappl13 168 28 0 25 1 0 1 1 0 8 0 amappl12 160 13 0 10 1 0 1 1 0 8 0 amappl11 152 306 0 292 1 0 1 1 0 8 0 amappl10 144 69 0 65 1 0 1 1 0 8 0 amappl9 136 502 0 496 1 0 1 1 0 8 0 amappl8 128 132 0 118 1 0 1 1 0 8 0 amappl7 120 28 0 24 1 0 1 1 0 8 0 amappl6 112 56 0 48 1 0 1 1 0 8 0 amappl5 104 161 0 148 1 0 1 1 0 8 0 amappl4 96 322 0 294 2 1 1 2 0 8 0 amappl3 88 225 0 218 1 0 1 1 0 8 0 amappl2 80 2445 0 2386 2 0 2 2 0 8 0 amappl1 72 18174 0 17735 25 15 10 19 0 8 0 amappl 72 1065 0 1030 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 10 0 4 1 0 1 1 0 8 0 uaddrrnd 24 400 0 384 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 400 0 384 1 0 1 1 0 8 0 vmmpekpl 168 7247 0 7222 2 0 2 2 0 8 0 vmmpepl 168 49571 0 48141 98 21 77 78 0 357 12 vmsppl 360 399 0 384 2 0 2 2 0 8 0 pdppl 4096 808 0 768 6 0 6 6 0 8 0 pvpl 32 166465 0 155155 134 14 120 127 0 265 26 pmappl 224 399 0 384 1 0 1 1 0 8 0 extentpl 40 39 0 25 1 0 1 1 0 8 0 phpool 112 445 0 5 13 0 13 13 0 8 0