uvm_fault(0xfffffd80677905d0, 0x0, 0, 1) -> e kernel: page fault trap, code=0 Stopped at ifa_update_broadaddr+0x1f: movzbl 0(%r15),%r12d ddb{0}> ddb{0}> set $lines = 0 ddb{0}> set $maxwidth = 0 ddb{0}> show panic kernel page fault uvm_fault(0xfffffd80677905d0, 0x0, 0, 1) -> e ifa_update_broadaddr(ffff800000b37000,ffff800000b48e00,ffff800021f1bac0) at ifa_update_broadaddr+0x1f sys/net/if.c:3070 end trace frame: 0xffff800021f1b970, count: 0 ddb{0}> trace ifa_update_broadaddr(ffff800000b37000,ffff800000b48e00,ffff800021f1bac0) at ifa_update_broadaddr+0x1f sys/net/if.c:3070 in_ioctl(80206913,ffff800021f1bab0,ffff800000b37000,1) at in_ioctl+0x5eb sys/netinet/in.c:320 ifioctl(fffffd8067b65e58,80206913,ffff800021f1bab0,ffff800020e0a878) at ifioctl+0xe70 sys/net/if.c:2282 soo_ioctl(fffffd80694b73a8,80206913,ffff800021f1bab0,ffff800020e0a878) at soo_ioctl+0x27c sys/kern/sys_socket.c:138 sys_ioctl(ffff800020e0a878,ffff800021f1bbc8,ffff800021f1bc10) at sys_ioctl+0x4a5 syscall(ffff800021f1bc90) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800021f1bc90) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x9a9998d6ad0, count: -7 ddb{0}> show registers rdi 0xffffffff820e4c0b ifa_update_broadaddr+0x1b rsi 0xe9 rbp 0xffff800021f1b8d0 rbx 0x10 rdx 0xea rcx 0xffff8000240f9000 rax 0xffff8000240f9000 r8 0xffffffff81d58f97 in_ioctl+0x387 r9 0x7 r10 0x3 r11 0xc81b68b670012bf0 r12 0xffff800021f1bac0 r13 0 r14 0xffff800021f1bac0 r15 0 rip 0xffffffff820e4c0f ifa_update_broadaddr+0x1f cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff800021f1b890 ss 0x10 ifa_update_broadaddr+0x1f: movzbl 0(%r15),%r12d ddb{0}> show proc PROC (syz-executor.0) pid=17525 stat=onproc flags process=0 proc=4000000 pri=32, usrpri=86, nice=20 forw=0xffffffffffffffff, list=0xffff800020e09c48,0xffffffff828b4398 process=0xffff800020e9b768 user=0xffff800021f16000, vmspace=0xfffffd80677905d0 estcpu=36, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 84047 13299 40754 0 2 0 syz-executor.0 *84047 17525 40754 0 7 0x4000000 syz-executor.0 53648 250153 55009 0 7 0 syz-executor.1 53648 211306 55009 0 3 0x4000080 netio syz-executor.1 40754 317109 71746 0 2 0x482 syz-executor.0 95850 69964 0 0 3 0x14200 bored sosplice 55009 230146 71746 0 3 0x82 nanosleep syz-executor.1 71746 311464 37969 0 3 0x82 thrsleep syz-fuzzer 71746 361720 37969 0 3 0x4000082 thrsleep syz-fuzzer 71746 433683 37969 0 3 0x4000082 thrsleep syz-fuzzer 71746 167547 37969 0 3 0x4000082 thrsleep syz-fuzzer 71746 450066 37969 0 3 0x4000082 thrsleep syz-fuzzer 71746 109485 37969 0 3 0x4000082 thrsleep syz-fuzzer 71746 427993 37969 0 3 0x4000082 thrsleep syz-fuzzer 71746 493798 37969 0 3 0x4000082 thrsleep syz-fuzzer 71746 145178 37969 0 3 0x4000082 thrsleep syz-fuzzer 71746 470431 37969 0 3 0x4000082 kqread syz-fuzzer 37969 228544 55689 0 3 0x10008a pause ksh 55689 243500 47879 0 3 0x92 select sshd 57654 308320 1 0 3 0x100083 ttyin getty 47879 176201 1 0 3 0x80 select sshd 90255 98391 51782 74 3 0x100092 bpf pflogd 51782 78684 1 0 3 0x80 netio pflogd 35186 322610 59617 73 3 0x100090 kqread syslogd 59617 333434 1 0 3 0x100082 netio syslogd 13317 196265 1 77 3 0x100090 poll dhclient 16349 191554 1 0 3 0x80 poll dhclient 68177 404379 0 0 3 0x14200 bored smr 66934 359998 0 0 2 0x14200 zerothread 37466 287039 0 0 3 0x14200 aiodoned aiodoned 58550 53702 0 0 3 0x14200 syncer update 99460 216186 0 0 3 0x14200 cleaner cleaner 5365 445484 0 0 3 0x14200 reaper reaper 24226 343719 0 0 3 0x14200 pgdaemon pagedaemon 94932 65295 0 0 3 0x14200 bored crynlk 91528 101684 0 0 3 0x14200 bored crypto 21932 88613 0 0 3 0x40014200 acpi0 acpi0 65610 444706 0 0 3 0x40014200 idle1 51845 107911 0 0 3 0x14200 bored softnet 33954 71068 0 0 3 0x14200 bored systqmp 62270 336802 0 0 3 0x14200 bored systq 22854 378767 0 0 3 0x40014200 bored softclock 11197 406135 0 0 3 0x40014200 idle0 1 186358 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 84047 (syz-executor.0) thread 0xffff800020e0a878 (17525) exclusive rwlock netlock r = 0 (0xffffffff82787348) #0 witness_lock+0x4c7 stacktrace_save sys/sys/stacktrace.h:36 [inline] #0 witness_lock+0x4c7 sys/kern/subr_witness.c:1164 #1 in_ioctl+0x1f5 #2 ifioctl+0xe70 sys/net/if.c:2282 #3 soo_ioctl+0x27c sys/kern/sys_socket.c:138 #4 sys_ioctl+0x4a5 #5 syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] #5 syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 #6 Xsyscall+0x128 exclusive kernel_lock &kernel_lock r = 1 (0xffffffff82926118) #0 witness_lock+0x4c7 stacktrace_save sys/sys/stacktrace.h:36 [inline] #0 witness_lock+0x4c7 sys/kern/subr_witness.c:1164 #1 soo_ioctl+0x26a sys/kern/sys_socket.c:138 #2 sys_ioctl+0x4a5 #3 syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] #3 syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 #4 Xsyscall+0x128 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 9565 6454K 6970K 78643K 15463 0 pcb 13 8K 8K 78643K 256 0 rtable 111 16K 19K 78643K 1068 0 ifaddr 127 25K 25K 78643K 482 0 sysctl 2 0K 0K 78643K 2 0 counters 43 33K 34K 78643K 129 0 ioctlops 0 0K 4K 78643K 1787 0 iov 0 0K 16K 78643K 152 0 mount 1 1K 1K 78643K 1 0 vnodes 1222 77K 77K 78643K 2682 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 20 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 0K 78643K 281 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1824 197K 290K 78643K 13058 0 file desc 6 17K 25K 78643K 2666 0 sigio 0 0K 0K 78643K 18 0 proc 64 63K 95K 78643K 577 0 subproc 32 2K 2K 78643K 51 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 234 0 in_multi 106 4K 5K 78643K 472 0 ether_multi 1 0K 0K 78643K 43 0 mrt 0 0K 0K 78643K 24 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 67 307K 307K 78643K 67 0 exec 0 0K 1K 78643K 410 0 pfkey data 0 0K 0K 78643K 2 0 pagedep 1 8K 8K 78643K 1 0 inodedep 1 32K 32K 78643K 1 0 newblk 1 0K 0K 78643K 1 0 VM swap 7 26K 26K 78643K 7 0 UVM amap 138 104K 113K 78643K 8145 0 UVM aobj 39 4K 4K 78643K 44 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 1K 78643K 212 0 NDP 17 0K 0K 78643K 97 0 temp 156 3875K 3939K 78643K 38277 0 kqueue 3 4K 16K 78643K 162 0 SYN cache 2 16K 16K 78643K 2 0 ddb{0}> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle arp 64 14 0 8 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtpcb 80 153 0 150 1 0 1 1 0 8 0 rtentry 112 167 0 134 2 0 2 2 0 8 0 unpcb 120 757 0 742 1 0 1 1 0 8 0 syncache 264 29 0 29 8 7 1 1 0 8 1 tcpqe 32 380 0 380 4 4 0 1 0 8 0 tcpcb 544 731 0 726 2 1 1 2 0 8 0 inpcb 296 2083 0 2067 5 3 2 3 0 8 0 rttmr 72 7 0 7 4 3 1 1 0 8 1 nd6 48 64 0 59 1 0 1 1 0 8 0 pkpcb 40 14 0 14 3 2 1 1 0 8 1 ppxss 1128 7 0 7 4 4 0 1 0 8 0 pfstscr 40 19 0 19 4 4 0 1 0 8 0 pffrag 232 16 0 15 5 4 1 1 0 482 0 pffrnode 88 16 0 15 5 4 1 1 0 8 0 pffrent 40 207 0 206 6 5 1 1 0 8 0 pfosfp 40 846 0 846 5 5 0 5 0 8 0 pfosfpen 112 1428 0 1428 21 21 0 21 0 8 0 pfrktable 1344 94 0 85 3 1 2 2 0 8 1 pftag 88 4 0 2 1 0 1 1 0 8 0 pfqueue 264 7 0 2 1 0 1 1 0 8 0 pfstitem 24 36 0 30 1 0 1 1 0 8 0 pfstkey 112 59 0 53 1 0 1 1 0 8 0 pfstate 328 46 0 41 3 1 2 3 0 8 0 pfrule 1360 81 0 51 5 2 3 3 0 8 0 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 490 0 289 22 3 19 19 0 8 2 art_table 32 492 0 289 4 1 3 3 0 8 0 art_node 16 161 0 134 1 0 1 1 0 8 0 sysvmsgpl 40 29 0 20 2 1 1 1 0 8 0 semapl 112 275 0 265 1 0 1 1 0 8 0 shmpl 112 41 0 6 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 4986 0 3593 89 1 88 89 0 8 0 ffsino 272 4986 0 3593 95 1 94 94 0 8 0 nchpl 144 8258 0 6671 60 0 60 60 0 8 0 uvmvnodes 72 5926 0 0 108 0 108 108 0 8 0 vnodes 208 5926 0 0 312 0 312 312 0 8 0 namei 1024 22589 0 22589 3 2 1 1 0 8 1 percpumem 16 75 0 43 1 0 1 1 0 8 0 vcpupl 1984 8 0 0 1 0 1 1 0 8 0 vmpool 560 14 0 6 1 0 1 1 0 8 0 pfiaddrpl 120 30 0 24 3 2 1 1 0 8 0 scsiplug 64 1 0 1 1 1 0 1 0 8 0 scxspl 192 25707 0 25707 12 11 1 7 0 8 1 plimitpl 152 227 0 219 1 0 1 1 0 8 0 sigapl 424 2879 0 2846 4 0 4 4 0 8 0 futexpl 56 21020 0 21020 2 1 1 1 0 8 1 knotepl 112 250 0 231 1 0 1 1 0 8 0 kqueuepl 144 314 0 307 1 0 1 1 0 8 0 pipepl 304 211 0 201 5 4 1 2 0 8 0 fdescpl 496 2863 0 2846 3 0 3 3 0 8 0 filepl 152 11787 0 11682 10 5 5 7 0 8 0 lockfpl 104 423 0 422 1 0 1 1 0 8 0 lockfspl 48 154 0 153 1 0 1 1 0 8 0 sessionpl 112 19 0 8 1 0 1 1 0 8 0 pgrppl 48 45 0 34 1 0 1 1 0 8 0 ucredpl 96 1669 0 1660 1 0 1 1 0 8 0 zombiepl 144 2846 0 2846 2 1 1 1 0 8 1 processpl 992 2879 0 2846 6 1 5 5 0 8 0 procpl 624 7223 0 7179 4 0 4 4 0 8 0 sosppl 128 29 0 29 7 6 1 1 0 8 1 sockpl 400 3015 0 2981 11 6 5 5 0 8 1 mcl64k 65536 17 0 0 3 0 3 3 0 8 0 mcl16k 16384 1 0 0 1 0 1 1 0 8 0 mcl12k 12288 5 0 0 1 0 1 1 0 8 0 mcl9k 9216 7 0 0 1 0 1 1 0 8 0 mcl8k 8192 7 0 0 1 0 1 1 0 8 0 mcl4k 4096 17 0 0 3 0 3 3 0 8 0 mcl2k2 2112 3 0 0 1 0 1 1 0 8 0 mcl2k 2048 211 0 0 21 0 21 21 0 8 0 mtagpl 96 326 0 0 8 0 8 8 0 8 0 mbufpl 256 959 0 0 59 1 58 58 0 8 0 bufpl 280 8900 0 2665 446 0 446 446 0 8 0 anonpl 16 269707 0 254916 92 24 68 76 0 124 6 amapchunkpl 152 15607 0 15464 33 22 11 20 0 158 3 amappl16 192 13463 0 12673 74 32 42 51 0 8 2 amappl15 184 1319 0 1316 1 0 1 1 0 8 0 amappl14 176 979 0 971 1 0 1 1 0 8 0 amappl13 168 37 0 33 1 0 1 1 0 8 0 amappl12 160 6 0 6 2 2 0 1 0 8 0 amappl11 152 1007 0 990 1 0 1 1 0 8 0 amappl10 144 21 0 16 1 0 1 1 0 8 0 amappl9 136 740 0 739 1 0 1 1 0 8 0 amappl8 128 381 0 340 2 0 2 2 0 8 0 amappl7 120 124 0 112 1 0 1 1 0 8 0 amappl6 112 980 0 973 1 0 1 1 0 8 0 amappl5 104 1807 0 1790 1 0 1 1 0 8 0 amappl4 96 1462 0 1433 1 0 1 1 0 8 0 amappl3 88 122 0 117 1 0 1 1 0 8 0 amappl2 80 23177 0 23098 2 0 2 2 0 8 0 amappl1 72 85776 0 85300 24 14 10 18 0 8 0 amappl 80 7530 0 7480 2 0 2 2 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 dma128 128 253 0 253 1 1 0 1 0 8 0 dma64 64 6 0 6 1 1 0 1 0 8 0 dma32 32 7 0 7 1 1 0 1 0 8 0 dma16 16 18 0 17 1 0 1 1 0 8 0 aobjpl 64 43 0 5 1 0 1 1 0 8 0 uaddrrnd 24 2877 0 2852 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 2877 0 2852 1 0 1 1 0 8 0 vmmpekpl 168 16985 0 16939 3 0 3 3 0 8 0 vmmpepl 168 359529 0 357429 155 61 94 112 0 357 2 vmsppl 368 2876 0 2852 3 0 3 3 0 8 0 pdppl 4096 5761 0 5712 8 1 7 7 0 8 0 pvpl 32 856076 0 838063 227 61 166 182 0 265 16 pmappl 232 2876 0 2852 3 1 2 2 0 8 0 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 337 0 20 10 0 10 10 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace ifa_update_broadaddr(ffff800000b37000,ffff800000b48e00,ffff800021f1bac0) at ifa_update_broadaddr+0x1f sys/net/if.c:3070 in_ioctl(80206913,ffff800021f1bab0,ffff800000b37000,1) at in_ioctl+0x5eb sys/netinet/in.c:320 ifioctl(fffffd8067b65e58,80206913,ffff800021f1bab0,ffff800020e0a878) at ifioctl+0xe70 sys/net/if.c:2282 soo_ioctl(fffffd80694b73a8,80206913,ffff800021f1bab0,ffff800020e0a878) at soo_ioctl+0x27c sys/kern/sys_socket.c:138 sys_ioctl(ffff800020e0a878,ffff800021f1bbc8,ffff800021f1bc10) at sys_ioctl+0x4a5 syscall(ffff800021f1bc90) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800021f1bc90) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x9a9998d6ad0, count: -7 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp ddb{1}> trace x86_ipi_db(ffff800020d70ff0) at x86_ipi_db+0x1a sys/arch/amd64/amd64/db_interface.c:352 x86_ipi_handler() at x86_ipi_handler+0xc6 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x23 end of kernel end trace frame: 0x7f7ffffbb940, count: -3