uvm_fault(0xfffffd807efff170, 0x0, 0, 1) -> e kernel: page fault trap, code=0 Stopped at ifa_update_broadaddr+0x1f: movzbl 0(%r15),%r12d ddb{1}> ddb{1}> set $lines = 0 ddb{1}> set $maxwidth = 0 ddb{1}> show panic kernel page fault uvm_fault(0xfffffd807efff170, 0x0, 0, 1) -> e ifa_update_broadaddr(ffff800000ac6000,ffff800000af8900,ffff8000230ec190) at ifa_update_broadaddr+0x1f sys/net/if.c:3073 end trace frame: 0xffff8000230ec040, count: 0 ddb{1}> trace ifa_update_broadaddr(ffff800000ac6000,ffff800000af8900,ffff8000230ec190) at ifa_update_broadaddr+0x1f sys/net/if.c:3073 in_ioctl(80206913,ffff8000230ec180,ffff800000ac6000,1) at in_ioctl+0x5eb sys/netinet/in.c:320 ifioctl(fffffd806a8b1800,80206913,ffff8000230ec180,ffff800020e09018) at ifioctl+0xe70 sys/net/if.c:2285 soo_ioctl(fffffd80669b0280,80206913,ffff8000230ec180,ffff800020e09018) at soo_ioctl+0x27c sys/kern/sys_socket.c:138 sys_ioctl(ffff800020e09018,ffff8000230ec298,ffff8000230ec2e0) at sys_ioctl+0x4a5 syscall(ffff8000230ec360) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff8000230ec360) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xd2c3be70b90, count: -7 ddb{1}> show registers rdi 0xffffffff8213487b ifa_update_broadaddr+0x1b rsi 0xd4 rbp 0xffff8000230ebfa0 rbx 0x10 rdx 0xd5 rcx 0xffff800020ed7000 rax 0xffff800020ed7000 r8 0xffffffff81dd24a7 in_ioctl+0x387 r9 0x7 r10 0x3 r11 0x9c738dbd1c80e338 r12 0xffff8000230ec190 r13 0xaa0014ac r14 0xffff8000230ec190 r15 0 rip 0xffffffff8213487f ifa_update_broadaddr+0x1f cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff8000230ebf60 ss 0x10 ifa_update_broadaddr+0x1f: movzbl 0(%r15),%r12d ddb{1}> show proc PROC (syz-executor.0) pid=449591 stat=onproc flags process=0 proc=4000000 pri=32, usrpri=86, nice=20 forw=0xffffffffffffffff, list=0xffff800020e09768,0xffffffff828bfa58 process=0xffff8000ffffc028 user=0xffff8000230e7000, vmspace=0xfffffd807efff170 estcpu=36, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 67655 283867 95139 0 7 0 syz-executor.0 *67655 449591 95139 0 7 0x4000000 syz-executor.0 27979 216865 0 0 3 0x14200 bored sosplice 25930 54745 27186 0 3 0x82 piperd syz-executor.1 95139 367920 27186 0 3 0x82 nanosleep syz-executor.0 27186 292652 22798 0 3 0x82 kqread syz-fuzzer 27186 466616 22798 0 3 0x4000082 nanosleep syz-fuzzer 27186 315450 22798 0 3 0x4000082 thrsleep syz-fuzzer 27186 209169 22798 0 2 0x4000002 syz-fuzzer 27186 91932 22798 0 3 0x4000082 thrsleep syz-fuzzer 27186 311023 22798 0 3 0x4000082 thrsleep syz-fuzzer 27186 505418 22798 0 3 0x4000082 thrsleep syz-fuzzer 27186 125047 22798 0 3 0x4000082 thrsleep syz-fuzzer 27186 114571 22798 0 3 0x4000082 thrsleep syz-fuzzer 27186 155551 22798 0 3 0x4000082 thrsleep syz-fuzzer 22798 455194 25225 0 3 0x10008a pause ksh 25225 241369 68182 0 3 0x92 select sshd 56002 171843 1 0 3 0x100083 ttyin getty 68182 34651 1 0 3 0x80 select sshd 83121 476070 78759 74 3 0x100092 bpf pflogd 78759 453266 1 0 3 0x80 netio pflogd 33871 493406 46964 73 3 0x100090 kqread syslogd 46964 321901 1 0 3 0x100082 netio syslogd 83503 505903 1 77 3 0x100090 poll dhclient 75404 48480 1 0 3 0x80 poll dhclient 60712 106041 0 0 3 0x14200 bored smr 41577 200178 0 0 2 0x14200 zerothread 84357 82605 0 0 3 0x14200 aiodoned aiodoned 37782 441922 0 0 3 0x14200 syncer update 94544 93610 0 0 3 0x14200 cleaner cleaner 39551 225600 0 0 3 0x14200 reaper reaper 25312 319652 0 0 3 0x14200 pgdaemon pagedaemon 61051 386990 0 0 3 0x14200 bored crynlk 33835 465006 0 0 3 0x14200 bored crypto 84706 250088 0 0 3 0x40014200 acpi0 acpi0 30995 405060 0 0 3 0x40014200 idle1 34975 310290 0 0 3 0x14200 bored softnet 33745 503423 0 0 3 0x14200 bored systqmp 33461 111061 0 0 3 0x14200 bored systq 80357 372562 0 0 3 0x40014200 bored softclock 5639 242435 0 0 3 0x40014200 idle0 1 504552 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 67655 (syz-executor.0) thread 0xffff800020e09018 (449591) exclusive rwlock netlock r = 0 (0xffffffff8279b1f8) #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:2285 #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 (0xffffffff828bf0e0) #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{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 9490 6405K 6664K 78643K 10865 0 pcb 13 8K 8K 78643K 67 0 rtable 106 4K 6K 78643K 280 0 ifaddr 55 12K 12K 78643K 79 0 counters 43 33K 33K 78643K 43 0 ioctlops 0 0K 4K 78643K 1495 0 iov 0 0K 32K 78643K 23 0 mount 1 1K 1K 78643K 1 0 vnodes 1221 77K 77K 78643K 1323 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 5 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 0K 78643K 72 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1824 197K 290K 78643K 13058 0 file desc 5 13K 25K 78643K 278 0 sigio 0 0K 0K 78643K 6 0 proc 61 63K 95K 78643K 440 0 subproc 32 2K 2K 78643K 34 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 23 0 in_multi 36 2K 2K 78643K 103 0 ether_multi 1 0K 0K 78643K 7 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 43 201K 201K 78643K 43 0 exec 0 0K 1K 78643K 225 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 119 22K 27K 78643K 1746 0 UVM aobj 12 4K 4K 78643K 13 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 23 0 NDP 8 0K 0K 78643K 17 0 temp 80 3858K 3922K 78643K 2658 0 kqueue 3 4K 8K 78643K 28 0 SYN cache 2 16K 16K 78643K 2 0 ddb{1}> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle arp 64 7 0 1 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtpcb 80 37 0 35 1 0 1 1 0 8 0 rtentry 112 61 0 21 2 0 2 2 0 8 0 unpcb 120 645 0 635 1 0 1 1 0 8 0 syncache 264 6 0 6 2 1 1 1 0 8 1 sackhl 24 1 0 1 1 0 1 1 0 8 1 tcpqe 32 1404 0 1404 1 1 0 1 0 8 0 tcpcb 544 78 0 73 1 0 1 1 0 8 0 inpcb 296 272 0 263 3 1 2 2 0 8 1 nd6 48 17 0 13 1 0 1 1 0 8 0 pffrag 232 3 0 3 2 1 1 1 0 482 1 pffrnode 88 3 0 3 2 1 1 1 0 8 1 pffrent 40 135 0 135 2 1 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 pfrktable 1344 12 0 10 2 1 1 1 0 8 0 pfstitem 24 29 0 10 1 0 1 1 0 8 0 pfstkey 112 29 0 10 1 0 1 1 0 8 0 pfstate 328 29 0 10 3 0 3 3 0 8 1 pfrule 1360 27 0 20 2 1 1 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 214 0 42 13 0 13 13 0 8 0 art_table 32 215 0 42 2 0 2 2 0 8 0 art_node 16 60 0 24 1 0 1 1 0 8 0 sysvmsgpl 40 6 0 2 1 0 1 1 0 8 0 semupl 112 4 0 4 1 1 0 1 0 8 0 semapl 112 70 0 60 1 0 1 1 0 8 0 shmpl 112 10 0 1 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1737 0 333 90 1 89 89 0 8 1 ffsino 272 1737 0 333 95 1 94 94 0 8 0 nchpl 144 2403 0 805 60 0 60 60 0 8 0 uvmvnodes 72 1856 0 0 34 0 34 34 0 8 0 vnodes 208 1856 0 0 98 0 98 98 0 8 0 namei 1024 6246 0 6246 3 2 1 1 0 8 1 percpumem 16 32 0 0 1 0 1 1 0 8 0 pfiaddrpl 120 5 0 3 2 1 1 1 0 8 0 scxspl 192 6949 0 6949 8 7 1 7 0 8 1 plimitpl 152 25 0 17 1 0 1 1 0 8 0 sigapl 424 494 0 462 4 0 4 4 0 8 0 futexpl 56 4729 0 4729 2 1 1 1 0 8 1 knotepl 112 88 0 69 1 0 1 1 0 8 0 kqueuepl 144 197 0 194 1 0 1 1 0 8 0 pipepl 304 97 0 87 1 0 1 1 0 8 0 fdescpl 496 478 0 462 3 0 3 3 0 8 0 filepl 152 3117 0 3015 6 1 5 5 0 8 1 lockfpl 104 60 0 59 1 0 1 1 0 8 0 lockfspl 48 25 0 24 1 0 1 1 0 8 0 sessionpl 112 18 0 7 1 0 1 1 0 8 0 pgrppl 48 18 0 7 1 0 1 1 0 8 0 ucredpl 96 208 0 199 1 0 1 1 0 8 0 zombiepl 144 462 0 462 2 1 1 1 0 8 1 processpl 992 494 0 462 6 1 5 5 0 8 0 procpl 624 984 0 942 4 0 4 4 0 8 0 sosppl 128 3 0 3 1 1 0 1 0 8 0 sockpl 400 954 0 933 8 4 4 4 0 8 1 mcl64k 65536 5 0 0 1 0 1 1 0 8 0 mcl16k 16384 1 0 0 1 0 1 1 0 8 0 mcl12k 12288 2 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 10 0 0 2 0 2 2 0 8 0 mcl2k2 2112 2 0 0 1 0 1 1 0 8 0 mcl2k 2048 222 0 0 27 0 27 27 0 8 0 mtagpl 96 29 0 0 1 0 1 1 0 8 0 mbufpl 256 423 0 0 25 0 25 25 0 8 0 bufpl 280 3763 0 132 260 0 260 260 0 8 0 anonpl 16 59425 0 41994 76 3 73 73 0 124 2 amapchunkpl 152 2289 0 2133 8 0 8 8 0 158 1 amappl16 192 1861 0 924 49 2 47 49 0 8 0 amappl15 184 14 0 12 1 0 1 1 0 8 0 amappl14 176 259 0 252 1 0 1 1 0 8 0 amappl13 168 28 0 25 1 0 1 1 0 8 0 amappl12 160 13 0 9 1 0 1 1 0 8 0 amappl11 152 285 0 268 1 0 1 1 0 8 0 amappl10 144 26 0 21 1 0 1 1 0 8 0 amappl9 136 312 0 310 1 0 1 1 0 8 0 amappl8 128 357 0 322 2 0 2 2 0 8 0 amappl7 120 116 0 105 1 0 1 1 0 8 0 amappl6 112 262 0 254 2 1 1 1 0 8 0 amappl5 104 301 0 284 1 0 1 1 0 8 0 amappl4 96 721 0 689 1 0 1 1 0 8 0 amappl3 88 109 0 104 1 0 1 1 0 8 0 amappl2 80 2848 0 2777 2 0 2 2 0 8 0 amappl1 72 22786 0 22343 23 13 10 18 0 8 0 amappl 80 1230 0 1182 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 12 0 1 1 0 1 1 0 8 0 uaddrrnd 24 478 0 462 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 478 0 462 1 0 1 1 0 8 0 vmmpekpl 168 7510 0 7478 2 0 2 2 0 8 0 vmmpepl 168 67103 0 64987 122 28 94 117 0 357 2 vmsppl 368 477 0 462 2 0 2 2 0 8 0 pdppl 4096 963 0 924 7 2 5 6 0 8 0 pvpl 32 198808 0 178237 182 7 175 176 0 265 8 pmappl 232 477 0 462 2 1 1 2 0 8 0 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 288 0 13 8 0 8 8 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp ddb{0}> trace x86_ipi_db(ffffffff826f6ff0) 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: 0x7f7ffffecab0, count: -3 ddb{0}> machine ddbcpu 1 Stopped at ifa_update_broadaddr+0x1f: movzbl 0(%r15),%r12d ddb{1}> trace ifa_update_broadaddr(ffff800000ac6000,ffff800000af8900,ffff8000230ec190) at ifa_update_broadaddr+0x1f sys/net/if.c:3073 in_ioctl(80206913,ffff8000230ec180,ffff800000ac6000,1) at in_ioctl+0x5eb sys/netinet/in.c:320 ifioctl(fffffd806a8b1800,80206913,ffff8000230ec180,ffff800020e09018) at ifioctl+0xe70 sys/net/if.c:2285 soo_ioctl(fffffd80669b0280,80206913,ffff8000230ec180,ffff800020e09018) at soo_ioctl+0x27c sys/kern/sys_socket.c:138 sys_ioctl(ffff800020e09018,ffff8000230ec298,ffff8000230ec2e0) at sys_ioctl+0x4a5 syscall(ffff8000230ec360) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff8000230ec360) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xd2c3be70b90, count: -7