uvm_fault(0xfffffd807effe730, 0x110, 0, 1) -> e kernel: page fault trap, code=0 Stopped at mrt_ioctl+0x35: movl 0x110(%r13),%eax ddb{0}> ddb{0}> set $lines = 0 ddb{0}> set $maxwidth = 0 ddb{0}> show panic kernel page fault uvm_fault(0xfffffd807effe730, 0x110, 0, 1) -> e mrt_ioctl(fffffd806ea82d88,c0287533,ffff800024e492b0) at mrt_ioctl+0x35 sys/netinet/ip_mroute.c:262 end trace frame: 0xffff800024e493b0, count: 0 ddb{0}> trace mrt_ioctl(fffffd806ea82d88,c0287533,ffff800024e492b0) at mrt_ioctl+0x35 sys/netinet/ip_mroute.c:262 sys_ioctl(ffff800020b39128,ffff800024e493c8,ffff800024e49430) at sys_ioctl+0x5b8 syscall(ffff800024e494a0) at syscall+0x552 mi_syscall sys/sys/syscall_mi.h:90 [inline] syscall(ffff800024e494a0) at syscall+0x552 sys/arch/amd64/amd64/trap.c:554 Xsyscall(6,0,ffffffffffffff38,0,3,db8ebeac010) at Xsyscall+0x128 end of kernel end trace frame: 0xdbb3cd02390, count: -4 ddb{0}> show registers rdi 0xffffffff819bd9f0 mrt_ioctl+0x30 rsi 0x762 rbp 0xffff800024e492a0 rbx 0xffff800024e492b0 rdx 0x763 rcx 0xffff800020bde000 rax 0xffff800020bde000 r8 0xffffffff816a9630 in_control+0x30 r9 0x7 r10 0xc0287533 r11 0xefc5a94fb3cd5986 r12 0xfffffd806ea82d88 r13 0 r14 0xffff800020b39128 r15 0xc0287533 rip 0xffffffff819bd9f5 mrt_ioctl+0x35 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff800024e49240 ss 0x10 mrt_ioctl+0x35: movl 0x110(%r13),%eax ddb{0}> show proc PROC (syz-executor.1) pid=220114 stat=onproc flags process=10 proc=4000000 pri=77, usrpri=77, nice=20 forw=0xffffffffffffffff, list=0xffff800020b39d58,0xffffffff8239ddd0 process=0xffff800020b3a9e8 user=0xffff800024e44000, vmspace=0xfffffd807effe730 estcpu=36, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 42734 377733 27912 32767 2 0x10 syz-executor.1 *42734 220114 27912 32767 7 0x4000010 syz-executor.1 27912 243818 94742 32767 2 0x490 syz-executor.1 94742 255927 73790 0 3 0x82 wait syz-executor.1 52429 271455 68507 32767 2 0x10 syz-executor.0 68507 23699 73790 0 3 0x82 wait syz-executor.0 24588 515966 0 0 3 0x14200 bored sosplice 73790 503577 29397 0 3 0x82 thrsleep syz-fuzzer 73790 136863 29397 0 2 0x4000482 syz-fuzzer 73790 6338 29397 0 3 0x4000082 thrsleep syz-fuzzer 73790 81913 29397 0 3 0x4000082 kqread syz-fuzzer 73790 358789 29397 0 3 0x4000082 thrsleep syz-fuzzer 73790 411240 29397 0 3 0x4000082 thrsleep syz-fuzzer 73790 196577 29397 0 3 0x4000082 thrsleep syz-fuzzer 73790 202297 29397 0 3 0x4000082 thrsleep syz-fuzzer 73790 144399 29397 0 3 0x4000082 thrsleep syz-fuzzer 73790 337904 29397 0 3 0x4000082 thrsleep syz-fuzzer 29397 439786 78323 0 3 0x10008a pause ksh 78323 11373 74063 0 3 0x92 select sshd 41284 130437 1 0 3 0x100083 ttyin getty 74063 443690 1 0 3 0x80 select sshd 47600 241257 21276 73 7 0x100090 syslogd 21276 408856 1 0 3 0x100082 netio syslogd 11971 62230 1 77 3 0x100090 poll dhclient 66078 227328 1 0 3 0x80 poll dhclient 87575 282357 0 0 3 0x14200 pgzero zerothread 94913 351028 0 0 3 0x14200 aiodoned aiodoned 2187 39162 0 0 3 0x14200 syncer update 78799 27257 0 0 3 0x14200 cleaner cleaner 12796 94378 0 0 3 0x14200 reaper reaper 77789 358928 0 0 3 0x14200 pgdaemon pagedaemon 23168 71474 0 0 3 0x14200 bored crynlk 13266 81161 0 0 3 0x14200 bored crypto 45692 475772 0 0 3 0x40014200 acpi0 acpi0 8753 357253 0 0 3 0x40014200 idle1 48837 304487 0 0 3 0x14200 bored softnet 73094 232949 0 0 3 0x14200 bored systqmp 84689 120109 0 0 3 0x14200 bored systq 91206 67585 0 0 2 0x40014200 softclock 50247 158876 0 0 3 0x40014200 idle0 66734 360723 0 0 3 0x14200 bored smr 1 250162 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 42734 (syz-executor.1) thread 0xffff800020b39128 (220114) exclusive kernel_lock &kernel_lock r = 1 (0xffffffff82388510) #0 witness_lock+0x52e sys/kern/subr_witness.c:1161 #1 syscall+0x412 mi_syscall sys/sys/syscall_mi.h:81 [inline] #1 syscall+0x412 sys/arch/amd64/amd64/trap.c:554 #2 Xsyscall+0x128 Process 52429 (syz-executor.0) thread 0xffff800020b39ae8 (271455) exclusive rrwlock inode r = 0 (0xfffffd8065a513c8) #0 witness_lock+0x52e sys/kern/subr_witness.c:1161 #1 rw_enter+0x46d sys/kern/kern_rwlock.c:306 #2 rrw_enter+0x4f sys/kern/kern_rwlock.c:435 #3 ufs_ihashins+0x45 sys/ufs/ufs/ufs_ihash.c:140 #4 ffs_vget+0x133 sys/ufs/ffs/ffs_vfsops.c:1352 #5 ffs_inode_alloc+0x1cf sys/ufs/ffs/ffs_alloc.c:392 #6 ufs_mkdir+0xf4 sys/ufs/ufs/ufs_vnops.c:1164 #7 VOP_MKDIR+0x6a sys/kern/vfs_vops.c:449 #8 domkdirat+0x121 sys/kern/vfs_syscalls.c:2974 #9 syscall+0x552 mi_syscall sys/sys/syscall_mi.h:90 [inline] #9 syscall+0x552 sys/arch/amd64/amd64/trap.c:554 #10 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd8065a51d58) #0 witness_lock+0x52e sys/kern/subr_witness.c:1161 #1 rw_enter+0x46d sys/kern/kern_rwlock.c:306 #2 rrw_enter+0x4f sys/kern/kern_rwlock.c:435 #3 VOP_LOCK+0x4b sys/kern/vfs_vops.c:602 #4 vn_lock+0x6e sys/kern/vfs_vnops.c:549 #5 vfs_lookup+0xe9 sys/kern/vfs_lookup.c:422 #6 namei+0x61c sys/kern/vfs_lookup.c:252 #7 domkdirat+0x75 sys/kern/vfs_syscalls.c:2959 #8 syscall+0x552 mi_syscall sys/sys/syscall_mi.h:90 [inline] #8 syscall+0x552 sys/arch/amd64/amd64/trap.c:554 #9 Xsyscall+0x128 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim Kern Lim devbuf 9459 6321K 6321K 78643K 10766 0 0 pcb 23 9K 11K 78643K 981 0 0 rtable 105 3K 3K 78643K 2188 0 0 ifaddr 36 11K 11K 78643K 306 0 0 counters 39 33K 33K 78643K 39 0 0 ioctlops 0 0K 2K 78643K 69 0 0 iov 0 0K 28K 78643K 173 0 0 mount 1 1K 1K 78643K 1 0 0 vnodes 1209 76K 76K 78643K 2349 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 22 0 0 VM map 2 1K 1K 78643K 2 0 0 sem 12 1K 1K 78643K 46 0 0 dirhash 12 2K 2K 78643K 12 0 0 ACPI 1808 196K 290K 78643K 12628 0 0 file desc 7 21K 33K 78643K 3629 0 0 sigio 0 0K 0K 78643K 27 0 0 proc 41 38K 70K 78643K 2276 0 0 subproc 34 2K 2K 78643K 782 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 273 0 0 in_multi 33 2K 2K 78643K 611 0 0 ether_multi 1 0K 0K 78643K 25 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 821 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 94 21K 30K 78643K 10670 0 0 UVM aobj 47 2K 2K 78643K 58 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 154 0 0 NDP 5 0K 0K 78643K 141 0 0 temp 121 2734K 2805K 78643K 15550 0 0 kqueue 0 0K 0K 78643K 23 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 94 0 88 1 0 1 1 0 8 0 inpcbpl 280 2327 0 2320 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtentry 112 529 0 485 2 0 2 2 0 8 0 syncache 264 4 0 4 1 1 0 1 0 8 0 tcpqe 32 26 0 26 1 1 0 1 0 8 0 tcpcb 544 1265 0 1260 1 0 1 1 0 8 0 ipq 40 4 0 4 1 1 0 1 0 8 0 ipqe 40 8 0 8 1 1 0 1 0 8 0 nd6 48 138 0 132 1 0 1 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 2154 0 1960 14 1 13 13 0 8 0 art_table 32 2155 0 1960 2 0 2 2 0 8 0 art_node 16 528 0 488 1 0 1 1 0 8 0 sysvmsgpl 40 23 0 16 1 0 1 1 0 8 0 semapl 112 36 0 26 1 0 1 1 0 8 0 shmpl 112 56 0 11 2 0 2 2 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino1pl 128 5140 0 3699 48 1 47 47 0 8 0 ffsino 272 5140 0 3699 97 0 97 97 0 8 0 nchpl 144 9007 0 7387 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 29181 0 29180 2 1 1 1 0 8 0 percpumem 16 30 0 0 1 0 1 1 0 8 0 scxspl 192 26707 0 26707 14 13 1 6 0 8 1 plimitpl 152 245 0 236 1 0 1 1 0 8 0 sigapl 432 3668 0 3653 4 2 2 3 0 8 0 futexpl 56 17490 0 17490 1 0 1 1 0 8 1 knotepl 112 1474 0 1455 1 0 1 1 0 8 0 kqueuepl 104 494 0 492 1 0 1 1 0 8 0 pipepl 112 986 0 967 5 4 1 2 0 8 0 fdescpl 488 3669 0 3653 3 0 3 3 0 8 0 filepl 152 14880 0 14783 12 7 5 7 0 8 1 lockfpl 104 603 0 603 7 6 1 1 0 8 1 lockfspl 48 163 0 163 7 6 1 1 0 8 1 sessionpl 112 61 0 51 1 0 1 1 0 8 0 pgrppl 48 74 0 64 1 0 1 1 0 8 0 ucredpl 96 4273 0 4264 1 0 1 1 0 8 0 zombiepl 144 3653 0 3653 2 1 1 1 0 8 1 processpl 840 3685 0 3653 4 0 4 4 0 8 0 procpl 624 8129 0 8087 4 0 4 4 0 8 0 srpgc 64 264 0 264 7 6 1 1 0 8 1 sosppl 128 75 0 75 9 9 0 1 0 8 0 sockpl 384 3313 0 3295 8 5 3 4 0 8 1 mcl64k 65536 1 0 0 1 0 1 1 0 8 0 mcl16k 16384 1 0 0 1 0 1 1 0 8 0 mcl12k 12288 4 0 0 1 0 1 1 0 8 0 mcl9k 9216 7 0 0 1 0 1 1 0 8 0 mcl8k 8192 5 0 0 1 0 1 1 0 8 0 mcl4k 4096 12 0 0 2 0 2 2 0 8 0 mcl2k2 2112 7 0 0 1 0 1 1 0 8 0 mcl2k 2048 165 0 0 16 1 15 16 0 8 0 mtagpl 80 1 0 0 1 0 1 1 0 8 0 mbufpl 256 244 0 0 12 0 12 12 0 8 0 bufpl 256 10807 0 3802 439 1 438 439 0 8 0 anonpl 16 287876 0 283706 53 32 21 32 0 125 0 amapchunkpl 152 23912 0 23826 35 30 5 18 0 158 0 amappl16 192 13148 0 12967 44 34 10 21 0 8 0 amappl15 184 1419 0 1418 3 2 1 1 0 8 0 amappl14 176 908 0 904 2 1 1 1 0 8 0 amappl13 168 365 0 363 6 5 1 1 0 8 0 amappl12 160 228 0 225 1 0 1 1 0 8 0 amappl11 152 269 0 254 1 0 1 1 0 8 0 amappl10 144 348 0 347 2 1 1 1 0 8 0 amappl9 136 1661 0 1658 1 0 1 1 0 8 0 amappl8 128 1081 0 1058 1 0 1 1 0 8 0 amappl7 120 325 0 314 1 0 1 1 0 8 0 amappl6 112 164 0 155 1 0 1 1 0 8 0 amappl5 104 535 0 525 1 0 1 1 0 8 0 amappl4 96 3803 0 3778 1 0 1 1 0 8 0 amappl3 88 404 0 393 1 0 1 1 0 8 0 amappl2 80 26499 0 26427 4 2 2 3 0 8 0 amappl1 72 94309 0 93874 23 13 10 19 0 8 0 amappl 80 9068 0 9033 1 0 1 1 0 84 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 57 0 11 1 0 1 1 0 8 0 uaddrrnd 24 3669 0 3653 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 3669 0 3653 1 0 1 1 0 8 0 vmmpekpl 168 26081 0 26055 2 0 2 2 0 8 0 vmmpepl 168 387999 0 386735 117 56 61 74 0 357 5 vmsppl 368 3668 0 3653 2 0 2 2 0 8 0 pdppl 4096 7346 0 7306 6 0 6 6 0 8 0 pvpl 32 921677 0 914296 166 91 75 102 0 265 8 pmappl 232 3668 0 3653 8 7 1 2 0 8 0 extentpl 40 41 0 26 1 0 1 1 0 8 0 phpool 112 604 0 6 18 0 18 18 0 8 0