uvm_fault(0xffffffff82282250, 0xffff800001998002, 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(0xffffffff82282250, 0xffff800001998002, 0, 1) -> e rtable_satoplen(21,ffff800001997f59) at rtable_satoplen+0x150 sys/net/rtable.c:888 end trace frame: 0xffff800020c35380, count: 0 ddb{1}> trace rtable_satoplen(21,ffff800001997f59) at rtable_satoplen+0x150 sys/net/rtable.c:888 rtable_lookup(0,ffff800001997f09,ffff800001997f59,ffff800001997f11,21) at rtable_lookup+0xfd sys/net/rtable.c:391 rtm_output(ffff800001997f00,ffff800020c35470,ffff800020c35478,21,0) at rtm_output+0x10c sys/net/rtsock.c:1122 route_output(fffffd806d32d100,fffffd806f725900,0,0) at route_output+0x79b sys/net/rtsock.c:806 route_usrreq(fffffd806f725900,9,fffffd806d32d100,0,0,ffff800020b8b2d8) at route_usrreq+0x35d sys/net/rtsock.c:271 sosend(fffffd806f725900,0,ffff800020c35738,0,0,0) at sosend+0x6eb sys/kern/uipc_socket.c:513 sendit(ffff800020b8b2d8,3,ffff800020c357f8,0,ffff800020c358c0) at sendit+0x590 sys/kern/uipc_syscalls.c:662 sys_sendto(ffff800020b8b2d8,ffff800020c358d8,ffff800020c358c0) at sys_sendto+0x92 syscall(ffff800020c35970) at syscall+0x5b8 mi_syscall sys/sys/syscall_mi.h:99 [inline] syscall(ffff800020c35970) at syscall+0x5b8 sys/arch/amd64/amd64/trap.c:574 Xsyscall(6,0,ffffffffffffffd8,0,6,e8740cc9010) at Xsyscall+0x128 end of kernel end trace frame: 0xe89f1bba9d0, count: -10 ddb{1}> show registers rdi 0 rsi 0xaa rbp 0xffff800020c352e0 rbx 0xffffffffffffff5a rdx 0xffff800001997f5d rcx 0xffff800001998003 rax 0xffff800001998003 r8 0x21 r9 0x1 r10 0x4 r11 0x712a9ecd94704dcc r12 0 r13 0xffff800001998003 r14 0xffffffff821f0ec0 mplsdomain r15 0x4 rip 0xffffffff8123aee0 rtable_satoplen+0x150 cs 0x8 rflags 0x10287 __ALIGN_SIZE+0xf287 rsp 0xffff800020c35290 ss 0x10 rtable_satoplen+0x150: movzbl 0xffffffffffffffff(%r13),%r12d ddb{1}> show proc PROC (syz-executor.0) pid=463653 stat=onproc flags process=0 proc=4000000 pri=69, usrpri=69, nice=20 forw=0xffffffffffffffff, list=0xffff800020b8a270,0xffffffff823dac40 process=0xffff800020b7c018 user=0xffff800020c30000, vmspace=0xfffffd807effdb40 estcpu=36, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 21216 441974 93203 0 7 0 syz-executor.0 *21216 463653 93203 0 7 0x4000000 syz-executor.0 23717 106789 49550 0 3 0x2 biowait syz-executor.1 93203 376779 49550 0 3 0x82 nanosleep syz-executor.0 49550 144485 181 0 3 0x82 thrsleep syz-fuzzer 49550 348490 181 0 3 0x4000082 nanosleep syz-fuzzer 49550 281907 181 0 3 0x4000082 thrsleep syz-fuzzer 49550 92881 181 0 3 0x4000082 kqread syz-fuzzer 49550 92387 181 0 3 0x4000082 thrsleep syz-fuzzer 49550 314734 181 0 3 0x4000082 thrsleep syz-fuzzer 49550 132174 181 0 3 0x4000082 thrsleep syz-fuzzer 49550 351731 181 0 3 0x4000082 thrsleep syz-fuzzer 49550 255341 181 0 3 0x4000082 thrsleep syz-fuzzer 49550 104511 181 0 3 0x4000082 nanosleep syz-fuzzer 181 52326 1857 0 3 0x10008a pause ksh 1857 191826 28917 0 3 0x92 select sshd 44547 358806 1 0 3 0x100083 ttyin getty 28917 338804 1 0 3 0x80 select sshd 61493 431248 72192 74 3 0x100092 bpf pflogd 72192 353511 1 0 3 0x80 netio pflogd 39700 276366 84953 73 2 0x100090 syslogd 84953 72305 1 0 3 0x100082 netio syslogd 56495 179993 1 77 3 0x100090 poll dhclient 19765 252177 1 0 3 0x80 poll dhclient 20241 182773 0 0 3 0x14200 pgzero zerothread 40862 322628 0 0 3 0x14200 aiodoned aiodoned 8879 72779 0 0 3 0x14200 syncer update 92916 362758 0 0 3 0x14200 cleaner cleaner 87476 157393 0 0 3 0x14200 reaper reaper 38272 121733 0 0 3 0x14200 pgdaemon pagedaemon 7611 97062 0 0 3 0x14200 bored crynlk 2700 103822 0 0 3 0x14200 bored crypto 64734 481506 0 0 3 0x40014200 acpi0 acpi0 56959 208921 0 0 3 0x40014200 idle1 11220 154206 0 0 3 0x14200 bored softnet 68104 482388 0 0 3 0x14200 bored systqmp 33334 422943 0 0 3 0x14200 bored systq 64324 274439 0 0 3 0x40014200 bored softclock 5655 48043 0 0 3 0x40014200 idle0 88919 65040 0 0 3 0x14200 bored smr 1 10238 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 21216 (syz-executor.0) thread 0xffff800020b8b2d8 (463653) exclusive kernel_lock &kernel_lock r = 1 (0xffffffff823ca8c0) 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 23717 (syz-executor.1) thread 0xffff800020b8bc38 (106789) exclusive rrwlock inode r = 0 (0xfffffd8075454e78) 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 (0xfffffd8068b7b2c0) 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 9490 6404K 6412K 78643K 10635 0 0 pcb 26 9K 11K 78643K 132 0 0 rtable 101 4K 4K 78643K 238 0 0 ifaddr 49 11K 12K 78643K 69 0 0 counters 39 33K 33K 78643K 39 0 0 ioctlops 0 0K 4K 78643K 1474 0 0 iov 0 0K 12K 78643K 12 0 0 mount 1 1K 1K 78643K 1 0 0 vnodes 1198 75K 75K 78643K 1297 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 6 0 0 VM map 2 1K 1K 78643K 2 0 0 sem 12 0K 0K 78643K 29 0 0 dirhash 12 2K 2K 78643K 12 0 0 ACPI 1808 196K 290K 78643K 12628 0 0 file desc 5 13K 25K 78643K 185 0 0 proc 53 50K 71K 78643K 381 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 14 0 0 in_multi 33 2K 2K 78643K 45 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 48 212K 212K 78643K 48 0 0 exec 0 0K 1K 78643K 214 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 20K 22K 78643K 1409 0 0 UVM aobj 13 2K 2K 78643K 20 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 4 0 0 NDP 9 0K 0K 78643K 19 0 0 temp 120 2367K 2434K 78643K 3580 0 0 kqueue 0 0K 0K 78643K 4 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 280 119 0 112 1 0 1 1 0 8 0 plimitpl 152 24 0 16 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 9 0 9 1 1 0 1 0 8 0 tcpcb 544 28 0 24 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 23 0 2 1 0 1 1 0 8 0 pfstkey 112 23 0 2 1 0 1 1 0 8 0 pfstate 328 23 0 2 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 256 226 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 4 0 4 1 1 0 1 0 8 0 semapl 112 27 0 17 1 0 1 1 0 8 0 shmpl 112 18 0 7 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino1pl 128 1726 0 305 46 0 46 46 0 8 0 ffsino 272 1726 0 305 96 0 96 96 0 8 0 nchpl 144 2192 0 561 61 0 61 61 0 8 0 uvmvnodes 72 1802 0 0 33 0 33 33 0 8 0 vnodes 200 1802 0 0 95 0 95 95 0 8 0 namei 1024 5790 0 5789 1 0 1 1 0 8 0 percpumem 16 30 0 0 1 0 1 1 0 8 0 scsiplug 64 2 0 2 1 0 1 1 0 8 1 scxspl 192 5610 0 5609 8 6 2 6 0 8 1 sigapl 432 378 0 363 3 1 2 3 0 8 0 futexpl 56 1936 0 1936 1 0 1 1 0 8 1 knotepl 112 110 0 83 2 1 1 2 0 8 0 kqueuepl 104 40 0 38 1 0 1 1 0 8 0 pipepl 112 234 0 215 2 1 1 1 0 8 0 fdescpl 488 379 0 363 3 0 3 3 0 8 0 filepl 152 1943 0 1843 5 0 5 5 0 8 1 lockfpl 104 63 0 63 2 1 1 1 0 8 1 lockfspl 32 87 0 87 2 1 1 1 0 8 1 sessionpl 112 19 0 8 1 0 1 1 0 8 0 pgrppl 48 27 0 16 1 0 1 1 0 8 0 ucredpl 96 238 0 229 1 0 1 1 0 8 0 zombiepl 144 363 0 363 2 1 1 1 0 8 1 processpl 840 394 0 363 4 0 4 4 0 8 0 procpl 600 753 0 712 4 0 4 4 0 8 0 srpgc 64 6 0 6 1 1 0 1 0 8 0 sockpl 384 224 0 204 4 0 4 4 0 8 2 mcl64k 65536 1 0 0 1 0 1 1 0 8 0 mcl12k 12288 2 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 3 0 0 1 0 1 1 0 8 0 mcl2k 2048 119 0 0 14 0 14 14 0 8 0 mtagpl 80 1 0 0 1 0 1 1 0 8 0 mbufpl 256 143 0 0 8 0 8 8 0 8 0 bufpl 256 5745 0 1043 294 0 294 294 0 8 0 anonpl 16 45653 0 37007 47 6 41 45 0 125 6 amapchunkpl 152 1694 0 1597 5 0 5 5 0 158 0 amappl16 192 1458 0 1010 33 7 26 33 0 8 3 amappl15 184 1 0 0 1 0 1 1 0 8 0 amappl14 176 105 0 100 1 0 1 1 0 8 0 amappl13 168 189 0 182 1 0 1 1 0 8 0 amappl12 160 10 0 10 2 2 0 1 0 8 0 amappl11 152 214 0 201 1 0 1 1 0 8 0 amappl10 144 66 0 61 1 0 1 1 0 8 0 amappl9 136 362 0 358 1 0 1 1 0 8 0 amappl8 128 134 0 122 1 0 1 1 0 8 0 amappl7 120 112 0 105 1 0 1 1 0 8 0 amappl6 112 139 0 130 1 0 1 1 0 8 0 amappl5 104 132 0 118 1 0 1 1 0 8 0 amappl4 96 312 0 285 2 1 1 2 0 8 0 amappl3 88 135 0 129 1 0 1 1 0 8 0 amappl2 80 2274 0 2218 2 0 2 2 0 8 0 amappl1 72 17494 0 17051 25 15 10 19 0 8 0 amappl 72 992 0 955 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 19 0 7 1 0 1 1 0 8 0 uaddrrnd 24 379 0 363 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 379 0 363 1 0 1 1 0 8 0 vmmpekpl 168 7013 0 6990 2 0 2 2 0 8 0 vmmpepl 168 47323 0 45868 90 17 73 77 0 357 6 vmsppl 360 378 0 363 2 0 2 2 0 8 0 pdppl 4096 766 0 726 6 0 6 6 0 8 0 pvpl 32 156847 0 145050 122 7 115 119 0 265 19 pmappl 224 378 0 363 2 1 1 2 0 8 0 extentpl 40 39 0 25 1 0 1 1 0 8 0 phpool 112 443 0 3 13 0 13 13 0 8 0