uvm_fault(0xffffffff8233ef50, 0xffff8000029b3002, 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(0xffffffff8233ef50, 0xffff8000029b3002, 0, 1) -> e rtable_satoplen(21,ffff8000029b2f59) at rtable_satoplen+0x150 sys/net/rtable.c:888 end trace frame: 0xffff800020c1eee0, count: 0 ddb{1}> trace rtable_satoplen(21,ffff8000029b2f59) at rtable_satoplen+0x150 sys/net/rtable.c:888 rtable_lookup(0,ffff8000029b2f09,ffff8000029b2f59,ffff8000029b2f11,21) at rtable_lookup+0xfd sys/net/rtable.c:391 rtm_output(ffff8000029b2f00,ffff800020c1efd0,ffff800020c1efd8,21,0) at rtm_output+0x1a7 sys/net/rtsock.c:952 route_output(fffffd807ec38d00,fffffd806f72e600,0,0) at route_output+0x79b sys/net/rtsock.c:806 route_usrreq(fffffd806f72e600,9,fffffd807ec38d00,0,0,ffff800020b28720) at route_usrreq+0x35d sys/net/rtsock.c:271 sosend(fffffd806f72e600,0,ffff800020c1f298,0,0,0) at sosend+0x6eb sys/kern/uipc_socket.c:513 sendit(ffff800020b28720,4,ffff800020c1f358,0,ffff800020c1f420) at sendit+0x590 sys/kern/uipc_syscalls.c:662 sys_sendto(ffff800020b28720,ffff800020c1f438,ffff800020c1f420) at sys_sendto+0x92 syscall(ffff800020c1f4d0) at syscall+0x5b8 mi_syscall sys/sys/syscall_mi.h:99 [inline] syscall(ffff800020c1f4d0) at syscall+0x5b8 sys/arch/amd64/amd64/trap.c:574 Xsyscall(6,0,ffffffffffffffd8,0,6,c561a061010) at Xsyscall+0x128 end of kernel end trace frame: 0xc584327cb60, count: -10 ddb{1}> show registers rdi 0 rsi 0xaa rbp 0xffff800020c1ee40 rbx 0xffffffffffffff5a rdx 0xffff8000029b2f5d rcx 0xffff8000029b3003 rax 0xffff8000029b3003 r8 0x21 r9 0x1 r10 0x4 r11 0x18e6e5a581552d18 r12 0 r13 0xffff8000029b3003 r14 0xffffffff82188408 mplsdomain r15 0x4 rip 0xffffffff812ab6d0 rtable_satoplen+0x150 cs 0x8 rflags 0x10287 __ALIGN_SIZE+0xf287 rsp 0xffff800020c1edf0 ss 0x10 rtable_satoplen+0x150: movzbl 0xffffffffffffffff(%r13),%r12d ddb{1}> show proc PROC (syz-executor.1) pid=126662 stat=onproc flags process=0 proc=4000000 pri=86, usrpri=86, nice=20 forw=0xffffffffffffffff, list=0xffff800020b28978,0xffffffff823ddcc0 process=0xffff800020b7d710 user=0xffff800020c1a000, vmspace=0xfffffd807f00b2d0 estcpu=36, cpticks=0, pctcpu=0.0 user=0, sys=0, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 7053 403234 35997 0 7 0 syz-executor.1 * 7053 126662 35997 0 7 0x4000000 syz-executor.1 96449 325957 9778 0 3 0x2 biowait syz-executor.0 9131 219292 0 0 3 0x14200 bored sosplice 35997 178119 9778 0 3 0x82 nanosleep syz-executor.1 9778 410142 79690 0 3 0x82 thrsleep syz-fuzzer 9778 123969 79690 0 3 0x4000082 thrsleep syz-fuzzer 9778 408083 79690 0 3 0x4000082 thrsleep syz-fuzzer 9778 364049 79690 0 3 0x4000082 thrsleep syz-fuzzer 9778 56154 79690 0 3 0x4000082 thrsleep syz-fuzzer 9778 405453 79690 0 3 0x4000082 kqread syz-fuzzer 9778 175909 79690 0 3 0x4000082 thrsleep syz-fuzzer 9778 275575 79690 0 3 0x4000082 thrsleep syz-fuzzer 9778 14715 79690 0 3 0x4000082 thrsleep syz-fuzzer 9778 163755 79690 0 3 0x4000082 thrsleep syz-fuzzer 79690 244232 75840 0 3 0x10008a pause ksh 75840 186449 83685 0 3 0x92 select sshd 69984 438731 1 0 3 0x100083 ttyin getty 83685 330633 1 0 3 0x80 select sshd 77162 196436 96129 74 3 0x100092 bpf pflogd 96129 59145 1 0 3 0x80 netio pflogd 98350 196329 83148 73 2 0x100090 syslogd 83148 202384 1 0 3 0x100082 netio syslogd 6674 51563 1 77 3 0x100090 poll dhclient 21185 426522 1 0 3 0x80 poll dhclient 69724 293860 0 0 3 0x14200 pgzero zerothread 80212 407692 0 0 3 0x14200 aiodoned aiodoned 49645 494312 0 0 3 0x14200 syncer update 17921 38989 0 0 3 0x14200 cleaner cleaner 59309 249669 0 0 3 0x14200 reaper reaper 19744 279566 0 0 3 0x14200 pgdaemon pagedaemon 22529 414401 0 0 3 0x14200 bored crynlk 79843 474685 0 0 3 0x14200 bored crypto 33212 407618 0 0 3 0x40014200 acpi0 acpi0 88804 9927 0 0 3 0x40014200 idle1 87911 130456 0 0 3 0x14200 bored softnet 91317 154872 0 0 3 0x14200 bored systqmp 44550 317176 0 0 3 0x14200 bored systq 12461 286915 0 0 3 0x40014200 bored softclock 36726 318125 0 0 3 0x40014200 idle0 28951 229953 0 0 3 0x14200 bored smr 1 255009 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 7053 (syz-executor.1) thread 0xffff800020b28720 (126662) exclusive kernel_lock &kernel_lock r = 1 (0xffffffff823d1188) 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 96449 (syz-executor.0) thread 0xffff800020b28bd0 (325957) exclusive rrwlock inode r = 0 (0xfffffd8068fbd3d8) 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 (0xfffffd8068ca30a0) 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 9496 6421K 6430K 78643K 10782 0 0 pcb 26 9K 10K 78643K 296 0 0 rtable 101 4K 4K 78643K 357 0 0 ifaddr 50 12K 12K 78643K 127 0 0 counters 39 33K 33K 78643K 39 0 0 ioctlops 0 0K 4K 78643K 1473 0 0 iov 0 0K 16K 78643K 58 0 0 mount 1 1K 1K 78643K 1 0 0 vnodes 1203 75K 76K 78643K 1496 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 0K 78643K 85 0 0 dirhash 12 2K 2K 78643K 12 0 0 ACPI 1808 196K 290K 78643K 12628 0 0 file desc 5 13K 21K 78643K 435 0 0 sigio 0 0K 0K 78643K 7 0 0 proc 53 50K 71K 78643K 443 0 0 subproc 64 65538K 67586K 78643K 136 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 48 0 0 in_multi 33 2K 2K 78643K 71 0 0 ether_multi 1 0K 0K 78643K 3 0 0 ISOFS mount 1 32K 32K 78643K 1 0 0 MSDOSFS mount 1 16K 16K 78643K 1 0 0 ttys 66 291K 291K 78643K 66 0 0 exec 0 0K 1K 78643K 237 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 22K 78643K 2320 0 0 UVM aobj 20 6K 6K 78643K 24 0 0 memdesc 1 4K 4K 78643K 1 0 0 crypto data 1 1K 1K 78643K 1 0 0 ip6_options 0 0K 1K 78643K 24 0 0 NDP 9 0K 0K 78643K 36 0 0 temp 150 2375K 2440K 78643K 4422 0 0 kqueue 0 0K 0K 78643K 5 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 6 0 2 1 0 1 1 0 8 0 inpcbpl 280 207 0 200 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 59 0 19 2 0 2 2 0 8 0 syncache 264 4 0 4 1 1 0 1 0 8 0 tcpcb 544 58 0 54 1 0 1 1 0 8 0 nd6 48 8 0 4 1 0 1 1 0 8 0 ppxss 1128 11 0 11 3 2 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 19 0 7 1 0 1 1 0 8 0 pfstkey 112 19 0 7 1 0 1 1 0 8 0 pfstate 328 19 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 256 271 0 85 12 0 12 12 0 8 0 art_table 32 272 0 85 2 0 2 2 0 8 0 art_node 16 58 0 24 1 0 1 1 0 8 0 sysvmsgpl 40 2 0 2 1 0 1 1 0 8 1 semupl 112 1 0 1 1 1 0 1 0 8 0 semapl 112 83 0 73 1 0 1 1 0 8 0 shmpl 112 22 0 4 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino1pl 128 2238 0 811 47 0 47 47 0 8 0 ffsino 272 2238 0 811 96 0 96 96 0 8 0 nchpl 144 3100 0 1465 61 0 61 61 0 8 0 uvmvnodes 72 2371 0 0 44 0 44 44 0 8 0 vnodes 200 2371 0 0 125 0 125 125 0 8 0 namei 1024 8785 0 8784 1 0 1 1 0 8 0 percpumem 16 30 0 0 1 0 1 1 0 8 0 scsiplug 64 2 0 2 2 1 1 1 0 8 1 scxspl 192 9748 0 9747 10 7 3 5 0 8 2 sigapl 432 625 0 610 2 0 2 2 0 8 0 futexpl 56 5114 0 5114 1 0 1 1 0 8 1 knotepl 112 206 0 179 4 2 2 2 0 8 1 kqueuepl 104 154 0 152 1 0 1 1 0 8 0 pipepl 112 446 0 427 1 0 1 1 0 8 0 fdescpl 488 626 0 610 3 0 3 3 0 8 0 filepl 152 3847 0 3746 5 0 5 5 0 8 1 lockfpl 104 205 0 205 2 1 1 1 0 8 1 lockfspl 32 244 0 244 2 1 1 1 0 8 1 sessionpl 112 20 0 9 1 0 1 1 0 8 0 pgrppl 48 30 0 19 1 0 1 1 0 8 0 ucredpl 96 741 0 732 1 0 1 1 0 8 0 zombiepl 144 610 0 610 1 0 1 1 0 8 1 processpl 840 642 0 610 4 0 4 4 0 8 0 procpl 600 1614 0 1572 4 0 4 4 0 8 0 srpgc 64 12 0 12 1 0 1 1 0 8 1 sosppl 128 7 0 7 2 2 0 1 0 8 0 sockpl 384 456 0 436 3 0 3 3 0 8 1 mcl64k 65536 229 0 0 29 1 28 29 0 8 1 mcl12k 12288 5 0 0 1 0 1 1 0 8 0 mcl9k 9216 2 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 4 0 0 1 0 1 1 0 8 0 mcl2k 2048 129 0 0 16 1 15 16 0 8 0 mtagpl 80 1 0 0 1 0 1 1 0 8 0 mbufpl 256 322 0 0 18 0 18 18 0 8 0 bufpl 256 6673 0 1049 352 0 352 352 0 8 0 anonpl 16 78441 0 70147 57 20 37 50 0 125 0 amapchunkpl 152 3396 0 3308 7 2 5 5 0 158 1 amappl16 192 3300 0 2826 45 20 25 34 0 8 1 amappl15 184 368 0 365 1 0 1 1 0 8 0 amappl14 176 72 0 65 1 0 1 1 0 8 0 amappl13 168 30 0 27 1 0 1 1 0 8 0 amappl12 160 43 0 41 2 1 1 1 0 8 0 amappl11 152 377 0 364 1 0 1 1 0 8 0 amappl10 144 63 0 60 1 0 1 1 0 8 0 amappl9 136 368 0 364 1 0 1 1 0 8 0 amappl8 128 195 0 172 1 0 1 1 0 8 0 amappl7 120 33 0 28 1 0 1 1 0 8 0 amappl6 112 60 0 52 1 0 1 1 0 8 0 amappl5 104 480 0 465 1 0 1 1 0 8 0 amappl4 96 315 0 291 2 1 1 2 0 8 0 amappl3 88 143 0 137 1 0 1 1 0 8 0 amappl2 80 4746 0 4690 2 0 2 2 0 8 0 amappl1 72 23315 0 22873 24 14 10 19 0 8 0 amappl 72 1873 0 1838 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 23 0 4 1 0 1 1 0 8 0 uaddrrnd 24 626 0 610 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 626 0 610 1 0 1 1 0 8 0 vmmpekpl 168 9426 0 9398 2 0 2 2 0 8 0 vmmpepl 168 76446 0 74971 103 21 82 82 0 357 12 vmsppl 360 625 0 610 2 0 2 2 0 8 0 pdppl 4096 1260 0 1220 6 0 6 6 0 8 0 pvpl 32 249111 0 237651 137 28 109 130 0 265 9 pmappl 224 625 0 610 2 1 1 2 0 8 0 extentpl 40 39 0 25 1 0 1 1 0 8 0 phpool 112 541 0 5 16 0 16 16 0 8 0