uvm_fault(0xfffffd807effe708, 0x100000008, 0, 2) -> e kernel: page fault trap, code=0 Stopped at arp_rtrequest+0x15f: movq %rcx,0x8(%r15) ddb{1}> ddb{1}> set $lines = 0 ddb{1}> set $maxwidth = 0 ddb{1}> show panic kernel page fault uvm_fault(0xfffffd807effe708, 0x100000008, 0, 2) -> e arp_rtrequest() at arp_rtrequest+0x15f sys/netinet/if_ether.c:201 end trace frame: 0xffff800022e31630, count: 0 ddb{1}> trace arp_rtrequest() at arp_rtrequest+0x15f sys/netinet/if_ether.c:201 rtrequest_delete(ffff800022e316e0,40,ffff8000001732a8,ffff800022e31658,0) at rtrequest_delete+0x21c _atomic_inc_int sys/arch/amd64/compile/SYZKALLER/obj/machine/atomic.h:139 [inline] rtrequest_delete(ffff800022e316e0,40,ffff8000001732a8,ffff800022e31658,0) at rtrequest_delete+0x21c sys/net/route.c:792 rtm_output(ffff800000a0aa00,ffff800022e31790,ffff800022e316e0,40,0) at rtm_output+0x5dc sys/net/rtsock.c:955 route_output(fffffd8065d40800,fffffd806f701480,0,0) at route_output+0x7d2 sys/net/rtsock.c:814 route_usrreq(fffffd806f701480,9,fffffd8065d40800,0,0,ffff800020b39c38) at route_usrreq+0x363 sys/net/rtsock.c:271 sosend(fffffd806f701480,0,ffff800022e31980,0,0,80) at sosend+0x668 sys/kern/uipc_socket.c:513 sendit(ffff800020b39c38,3,ffff800022e31a60,0,ffff800022e31b70) at sendit+0x52c sys/kern/uipc_syscalls.c:662 sys_sendto(ffff800020b39c38,ffff800022e31b08,ffff800022e31b70) at sys_sendto+0x80 sys/kern/uipc_syscalls.c:527 syscall(ffff800022e31be0) at syscall+0x552 mi_syscall sys/sys/syscall_mi.h:99 [inline] syscall(ffff800022e31be0) at syscall+0x552 sys/arch/amd64/amd64/trap.c:574 Xsyscall(6,0,ffffffffffffffd8,0,6,40632fd7010) at Xsyscall+0x128 end of kernel end trace frame: 0x40906b08d90, count: -10 ddb{1}> show registers rdi 0xffffffff817cab37 arp_rtrequest+0x157 rsi 0x453 rbp 0xffff800022e315a0 rbx 0xffff800000a1b830 rdx 0x454 rcx 0xdeaf4152deaf4152 rax 0xffff800000a1b838 r8 0xffffffff817caaff arp_rtrequest+0x11f r9 0x5 r10 0x11 r11 0x7921353321ca17af r12 0xffff8000001732a8 r13 0x2 r14 0xfffffd8065bc7b88 r15 0x100000000 rip 0xffffffff817cab3f arp_rtrequest+0x15f cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff800022e31520 ss 0x10 arp_rtrequest+0x15f: movq %rcx,0x8(%r15) ddb{1}> show proc PROC (syz-executor.1) pid=157814 stat=onproc flags process=0 proc=4000000 pri=86, usrpri=86, nice=20 forw=0xffffffffffffffff, list=0xffff800020b38978,0xffffffff82375270 process=0xffff800020b8d3c8 user=0xffff800022e2c000, vmspace=0xfffffd807effe708 estcpu=36, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 57582 4093 88958 0 7 0 syz-executor.1 *57582 157814 88958 0 7 0x4000000 syz-executor.1 8030 69409 1 0 3 0x100083 ttyin getty 8345 416266 0 0 3 0x14200 bored sosplice 88958 121018 39305 0 3 0x82 nanosleep syz-executor.1 25436 406634 39305 0 3 0x2 biowait syz-executor.0 39305 120802 57128 0 3 0x82 thrsleep syz-fuzzer 39305 90799 57128 0 3 0x4000082 thrsleep syz-fuzzer 39305 376849 57128 0 3 0x4000082 thrsleep syz-fuzzer 39305 217157 57128 0 3 0x4000082 thrsleep syz-fuzzer 39305 425023 57128 0 3 0x4000082 thrsleep syz-fuzzer 39305 38004 57128 0 3 0x4000082 kqread syz-fuzzer 39305 59234 57128 0 3 0x4000082 thrsleep syz-fuzzer 39305 360129 57128 0 3 0x4000082 thrsleep syz-fuzzer 39305 384427 57128 0 3 0x4000082 thrsleep syz-fuzzer 39305 127596 57128 0 3 0x4000082 thrsleep syz-fuzzer 57128 320089 25675 0 3 0x10008a pause ksh 25675 355643 16664 0 3 0x92 select sshd 16664 36954 1 0 3 0x80 select sshd 76313 361863 47878 74 3 0x100092 bpf pflogd 47878 90480 1 0 3 0x80 netio pflogd 43635 68697 407 73 2 0x100090 syslogd 407 407627 1 0 3 0x100082 netio syslogd 20714 313349 1 77 3 0x100090 poll dhclient 53493 209799 1 0 3 0x80 poll dhclient 59749 186579 0 0 3 0x14200 pgzero zerothread 57811 429630 0 0 3 0x14200 aiodoned aiodoned 86314 174483 0 0 3 0x14200 syncer update 50318 313683 0 0 3 0x14200 cleaner cleaner 67633 154445 0 0 3 0x14200 reaper reaper 26840 461249 0 0 3 0x14200 pgdaemon pagedaemon 80892 304890 0 0 3 0x14200 bored crynlk 56761 207270 0 0 3 0x14200 bored crypto 14033 474914 0 0 3 0x40014200 acpi0 acpi0 6838 170 0 0 3 0x40014200 idle1 95192 317906 0 0 3 0x14200 bored softnet 92037 190162 0 0 3 0x14200 bored systqmp 30529 52579 0 0 3 0x14200 bored systq 69319 154119 0 0 3 0x40014200 bored softclock 77004 343898 0 0 3 0x40014200 idle0 93027 21090 0 0 3 0x14200 bored smr 1 356250 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 57582 (syz-executor.1) thread 0xffff800020b39c38 (157814) exclusive rwlock netlock r = 0 (0xffffffff8220efe8) #0 witness_lock+0x52e sys/kern/subr_witness.c:1161 #1 rtm_output+0x5c3 sys/net/rtsock.c:954 #2 route_output+0x7d2 sys/net/rtsock.c:814 #3 route_usrreq+0x363 sys/net/rtsock.c:271 #4 sosend+0x668 sys/kern/uipc_socket.c:513 #5 sendit+0x52c sys/kern/uipc_syscalls.c:662 #6 sys_sendto+0x80 sys/kern/uipc_syscalls.c:527 #7 syscall+0x552 mi_syscall sys/sys/syscall_mi.h:99 [inline] #7 syscall+0x552 sys/arch/amd64/amd64/trap.c:574 #8 Xsyscall+0x128 exclusive kernel_lock &kernel_lock r = 1 (0xffffffff82382bd0) #0 witness_lock+0x52e sys/kern/subr_witness.c:1161 #1 solock+0x66 sys/kern/uipc_socket2.c:292 #2 sosend+0x52c sys/kern/uipc_socket.c:501 #3 sendit+0x52c sys/kern/uipc_syscalls.c:662 #4 sys_sendto+0x80 sys/kern/uipc_syscalls.c:527 #5 syscall+0x552 mi_syscall sys/sys/syscall_mi.h:99 [inline] #5 syscall+0x552 sys/arch/amd64/amd64/trap.c:574 #6 Xsyscall+0x128 Process 25436 (syz-executor.0) thread 0xffff800020b144b8 (406634) exclusive rrwlock inode r = 0 (0xfffffd806e4e71b0) #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:2970 #9 syscall+0x552 mi_syscall sys/sys/syscall_mi.h:99 [inline] #9 syscall+0x552 sys/arch/amd64/amd64/trap.c:574 #10 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd8069a2e3d0) #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:2955 #8 syscall+0x552 mi_syscall sys/sys/syscall_mi.h:99 [inline] #8 syscall+0x552 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 9528 6413K 7063K 78643K 17500 0 0 pcb 26 9K 11K 78643K 6861 0 0 rtable 502 32K 32K 78643K 8084 0 0 ifaddr 62 15K 16K 78643K 232 0 0 counters 39 33K 33K 78643K 39 0 0 ioctlops 0 0K 4K 78643K 1497 0 0 iov 0 0K 24K 78643K 350 0 0 mount 1 1K 1K 78643K 1 0 0 vnodes 1197 75K 76K 78643K 4271 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 38 0 0 VM map 2 1K 1K 78643K 2 0 0 sem 12 0K 0K 78643K 200 0 0 dirhash 12 2K 2K 78643K 12 0 0 ACPI 1808 196K 290K 78643K 12628 0 0 file desc 5 13K 25K 78643K 8409 0 0 sigio 0 0K 0K 78643K 38 0 0 proc 54 51K 91K 78643K 960 0 0 subproc 32 2K 2K 78643K 34 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 1262 0 0 in_multi 33 2K 2K 78643K 422 0 0 ether_multi 1 0K 0K 78643K 35 0 0 mrt 0 0K 0K 78643K 49 0 0 ISOFS mount 1 32K 32K 78643K 1 0 0 MSDOSFS mount 1 16K 16K 78643K 1 0 0 ttys 84 371K 371K 78643K 84 0 0 exec 0 0K 1K 78643K 447 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 98 21K 39K 78643K 21210 0 0 UVM aobj 94 4K 4K 78643K 100 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 236 0 0 NDP 13 0K 0K 78643K 69 0 0 temp 183 2736K 2855K 78643K 23498 0 0 kqueue 0 0K 0K 78643K 26 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 0 1 0 1 1 0 8 0 inpcbpl 280 2035 0 2028 1 0 1 1 0 8 0 plimitpl 152 177 0 169 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtentry 112 1782 0 1572 7 0 7 7 0 8 0 syncache 264 4 0 4 1 1 0 1 0 8 0 sackhl 24 1 0 1 1 1 0 1 0 8 0 tcpcb 544 580 0 576 1 0 1 1 0 8 0 rttmr 72 13 0 13 4 4 0 1 0 8 0 nd6 48 6 0 0 1 0 1 1 0 8 0 ppxss 1128 45 0 43 1 0 1 1 0 8 0 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 53 0 48 1 0 1 1 0 8 0 pfstkey 112 53 0 48 1 0 1 1 0 8 0 pfstate 328 53 0 48 3 1 2 2 0 8 0 pfrule 1360 21 0 16 2 1 1 2 0 8 0 art_heap8 4096 17 0 0 17 0 17 17 0 8 0 art_heap4 256 316 0 7 21 1 20 20 0 8 0 art_table 32 333 0 7 3 0 3 3 0 8 0 art_node 16 229 0 158 1 0 1 1 0 8 0 sysvmsgpl 40 24 0 7 1 0 1 1 0 8 0 semapl 112 198 0 188 1 0 1 1 0 8 0 shmpl 112 98 0 6 3 0 3 3 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino1pl 128 13108 0 11629 48 0 48 48 0 8 0 ffsino 272 13108 0 11629 99 0 99 99 0 8 0 nchpl 144 22888 0 21256 65 3 62 62 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 58527 0 58526 2 1 1 1 0 8 0 percpumem 16 30 0 0 1 0 1 1 0 8 0 scsiplug 64 5 0 5 2 2 0 1 0 8 0 scxspl 192 73108 0 73107 18 17 1 6 0 8 0 sigapl 432 8611 0 8596 3 1 2 3 0 8 0 futexpl 56 43698 0 43698 1 0 1 1 0 8 1 knotepl 112 781 0 762 1 0 1 1 0 8 0 kqueuepl 104 919 0 917 1 0 1 1 0 8 0 pipepl 112 1480 0 1461 7 6 1 2 0 8 0 fdescpl 488 8612 0 8596 3 0 3 3 0 8 0 filepl 152 31311 0 31211 13 8 5 6 0 8 1 lockfpl 104 1041 0 1041 11 10 1 1 0 8 1 lockfspl 48 435 0 435 11 10 1 1 0 8 1 sessionpl 112 20 0 9 1 0 1 1 0 8 0 pgrppl 48 44 0 33 1 0 1 1 0 8 0 ucredpl 96 6440 0 6431 1 0 1 1 0 8 0 zombiepl 144 8596 0 8596 2 1 1 1 0 8 1 processpl 840 8628 0 8596 4 0 4 4 0 8 0 procpl 600 20236 0 20194 4 0 4 4 0 8 0 srpgc 64 13 0 13 4 4 0 1 0 8 0 sosppl 128 44 0 44 6 6 0 1 0 8 0 sockpl 384 8664 0 8644 5 2 3 4 0 8 1 mcl64k 65536 13 0 0 2 0 2 2 0 8 0 mcl16k 16384 2 0 0 1 0 1 1 0 8 0 mcl12k 12288 8 0 0 1 0 1 1 0 8 0 mcl9k 9216 11 0 0 1 0 1 1 0 8 0 mcl8k 8192 7 0 0 1 0 1 1 0 8 0 mcl4k 4096 11 0 0 2 0 2 2 0 8 0 mcl2k2 2112 6 0 0 1 0 1 1 0 8 0 mcl2k 2048 241 0 0 15 2 13 15 0 8 0 mtagpl 80 3 0 0 1 0 1 1 0 8 0 mbufpl 256 462 0 0 15 0 15 15 0 8 0 bufpl 256 21474 0 14466 439 0 439 439 0 8 0 anonpl 16 645641 0 641314 96 77 19 33 0 125 0 amapchunkpl 152 36854 0 36769 39 35 4 14 0 158 0 amappl16 192 38129 0 37941 44 33 11 21 0 8 1 amappl14 176 39 0 36 2 1 1 1 0 8 0 amappl13 168 19 0 16 1 0 1 1 0 8 0 amappl12 160 6 0 5 2 1 1 1 0 8 0 amappl11 152 63 0 45 1 0 1 1 0 8 0 amappl10 144 77 0 72 1 0 1 1 0 8 0 amappl9 136 8942 0 8935 1 0 1 1 0 8 0 amappl8 128 8538 0 8512 1 0 1 1 0 8 0 amappl7 120 36 0 32 1 0 1 1 0 8 0 amappl6 112 62 0 54 1 0 1 1 0 8 0 amappl5 104 179 0 165 1 0 1 1 0 8 0 amappl4 96 8785 0 8760 1 0 1 1 0 8 0 amappl3 88 247 0 237 1 0 1 1 0 8 0 amappl2 80 68652 0 68579 4 2 2 3 0 8 0 amappl1 72 165153 0 164713 26 16 10 20 0 8 0 amappl 80 20526 0 20492 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 99 0 6 2 0 2 2 0 8 0 uaddrrnd 24 8612 0 8596 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 8612 0 8596 1 0 1 1 0 8 0 vmmpekpl 168 42114 0 42081 2 0 2 2 0 8 0 vmmpepl 168 855129 0 853882 131 71 60 77 0 357 1 vmsppl 360 8611 0 8596 2 0 2 2 0 8 0 pdppl 4096 17232 0 17192 6 0 6 6 0 8 0 pvpl 32 1830989 0 1823414 264 196 68 104 0 265 6 pmappl 232 8611 0 8596 2 1 1 2 0 8 0 extentpl 40 41 0 26 1 0 1 1 0 8 0 phpool 112 628 0 7 18 0 18 18 0 8 0