uvm_fault(0xfffffd8065c62d00, 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(0xfffffd8065c62d00, 0x0, 0, 1) -> e ifa_update_broadaddr(ffff800000ac5000,ffff800000b07600,ffff8000230f6140) at ifa_update_broadaddr+0x1f sys/net/if.c:3070 end trace frame: 0xffff8000230f5ff0, count: 0 ddb{1}> trace ifa_update_broadaddr(ffff800000ac5000,ffff800000b07600,ffff8000230f6140) at ifa_update_broadaddr+0x1f sys/net/if.c:3070 in_ioctl(80206913,ffff8000230f6130,ffff800000ac5000,1) at in_ioctl+0x5eb sys/netinet/in.c:320 ifioctl(fffffd8065cc69b0,80206913,ffff8000230f6130,ffff800020e03eb8) at ifioctl+0xe70 sys/net/if.c:2282 soo_ioctl(fffffd8065d17558,80206913,ffff8000230f6130,ffff800020e03eb8) at soo_ioctl+0x27c sys/kern/sys_socket.c:138 sys_ioctl(ffff800020e03eb8,ffff8000230f6248,ffff8000230f6290) at sys_ioctl+0x4a5 syscall(ffff8000230f6310) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff8000230f6310) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x25337ca810, count: -7 ddb{1}> show registers rdi 0xffffffff81c9872b ifa_update_broadaddr+0x1b rsi 0xe2 rbp 0xffff8000230f5f50 rbx 0x10 rdx 0xe3 rcx 0xffff800023105000 rax 0xffff800023105000 r8 0xffffffff81185317 in_ioctl+0x387 r9 0x7 r10 0x3 r11 0x565cf1f848024dd7 r12 0xffff8000230f6140 r13 0 r14 0xffff8000230f6140 r15 0 rip 0xffffffff81c9872f ifa_update_broadaddr+0x1f cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff8000230f5f10 ss 0x10 ifa_update_broadaddr+0x1f: movzbl 0(%r15),%r12d ddb{1}> show proc PROC (syz-executor.1) pid=387980 stat=onproc flags process=0 proc=4000000 pri=32, usrpri=86, nice=20 forw=0xffffffffffffffff, list=0xffff800020e04608,0xffffffff828ba3d8 process=0xffff800020eb4028 user=0xffff8000230f1000, vmspace=0xfffffd8065c62d00 estcpu=36, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 96753 116512 64025 0 7 0 syz-executor.1 *96753 387980 64025 0 7 0x4000000 syz-executor.1 8374 11219 43863 0 3 0x82 nanosleep syz-executor.0 34374 130358 0 0 3 0x14200 bored sosplice 64025 307186 43863 0 3 0x82 nanosleep syz-executor.1 43863 370349 38881 0 3 0x82 kqread syz-fuzzer 43863 88873 38881 0 3 0x4000082 nanosleep syz-fuzzer 43863 286214 38881 0 3 0x4000082 thrsleep syz-fuzzer 43863 380014 38881 0 3 0x4000082 thrsleep syz-fuzzer 43863 444784 38881 0 3 0x4000082 thrsleep syz-fuzzer 43863 319668 38881 0 3 0x4000082 thrsleep syz-fuzzer 43863 164835 38881 0 3 0x4000082 thrsleep syz-fuzzer 43863 259988 38881 0 3 0x4000082 thrsleep syz-fuzzer 43863 423520 38881 0 3 0x4000082 thrsleep syz-fuzzer 43863 498987 38881 0 3 0x4000082 nanosleep syz-fuzzer 38881 235108 80005 0 3 0x10008a pause ksh 80005 248481 65851 0 3 0x92 select sshd 94340 114235 1 0 3 0x100083 ttyin getty 65851 5312 1 0 3 0x80 select sshd 28854 159992 14726 74 3 0x100092 bpf pflogd 14726 243816 1 0 3 0x80 netio pflogd 55566 435779 10863 73 3 0x100090 kqread syslogd 10863 323470 1 0 3 0x100082 netio syslogd 84743 418640 1 77 3 0x100090 poll dhclient 68688 279318 1 0 3 0x80 poll dhclient 24167 112610 0 0 3 0x14200 bored smr 82279 172347 0 0 3 0x14200 pgzero zerothread 28695 3348 0 0 3 0x14200 aiodoned aiodoned 3989 401888 0 0 3 0x14200 syncer update 27371 373986 0 0 3 0x14200 cleaner cleaner 18534 242120 0 0 3 0x14200 reaper reaper 36738 479999 0 0 3 0x14200 pgdaemon pagedaemon 54636 494385 0 0 3 0x14200 bored crynlk 95103 105674 0 0 3 0x14200 bored crypto 66946 356905 0 0 3 0x40014200 acpi0 acpi0 56910 149699 0 0 3 0x40014200 idle1 33941 226180 0 0 3 0x14200 bored softnet 22873 273930 0 0 3 0x14200 bored systqmp 16596 214839 0 0 3 0x14200 bored systq 27789 244824 0 0 3 0x40014200 bored softclock 47204 404926 0 0 3 0x40014200 idle0 1 446106 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 96753 (syz-executor.1) thread 0xffff800020e03eb8 (387980) exclusive rwlock netlock r = 0 (0xffffffff82753c68) #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 (0xffffffff828bb818) #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 9532 6422K 6808K 78643K 11318 0 pcb 13 8K 8K 78643K 77 0 rtable 99 11K 15K 78643K 582 0 ifaddr 87 16K 16K 78643K 210 0 sysctl 0 0K 0K 78643K 2 0 counters 45 34K 34K 78643K 77 0 ioctlops 0 0K 4K 78643K 2153 0 iov 0 0K 16K 78643K 75 0 mount 1 1K 1K 78643K 1 0 vnodes 1230 77K 77K 78643K 1502 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 11 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 1K 78643K 97 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1824 197K 290K 78643K 13058 0 file desc 6 17K 25K 78643K 617 0 sigio 0 0K 0K 78643K 24 0 proc 62 63K 95K 78643K 536 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 60 0 in_multi 64 3K 3K 78643K 104 0 ether_multi 1 0K 0K 78643K 10 0 mrt 0 0K 0K 78643K 3 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 49 228K 228K 78643K 49 0 exec 0 0K 1K 78643K 263 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 140 88K 88K 78643K 3045 0 UVM aobj 30 4K 4K 78643K 31 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 76 0 NDP 14 0K 0K 78643K 36 0 temp 126 3863K 3941K 78643K 8269 0 kqueue 4 6K 12K 78643K 25 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 13 0 5 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtpcb 80 55 0 53 1 0 1 1 0 8 0 rtentry 112 68 0 30 2 0 2 2 0 8 0 unpcb 120 355 0 345 2 1 1 2 0 8 0 syncache 264 4 0 4 1 1 0 1 0 8 0 sackhl 24 1 0 1 1 0 1 1 0 8 1 tcpqe 32 126 0 126 1 1 0 1 0 8 0 tcpcb 544 226 0 221 2 1 1 2 0 8 0 inpcb 296 1595 0 1583 5 3 2 2 0 8 0 nd6 48 12 0 5 1 0 1 1 0 8 0 pkpcb 40 8 0 8 2 2 0 1 0 8 0 pfstscr 40 1 0 1 1 1 0 1 0 8 0 pffrag 232 1 0 1 1 1 0 1 0 482 0 pffrnode 88 1 0 1 1 1 0 1 0 8 0 pffrent 40 45 0 45 1 1 0 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 pfrktable 1344 77 0 76 3 2 1 1 0 8 0 pftag 88 4 0 4 2 2 0 1 0 8 0 pfstitem 24 30 0 15 1 0 1 1 0 8 0 pfstkey 112 32 0 17 1 0 1 1 0 8 0 pfstate 328 31 0 16 3 1 2 3 0 8 0 pfrule 1360 39 0 31 2 1 1 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 272 0 98 13 2 11 13 0 8 0 art_table 32 273 0 98 2 0 2 2 0 8 0 art_node 16 67 0 35 1 0 1 1 0 8 0 sysvmsgpl 40 42 0 20 1 0 1 1 0 8 0 semupl 112 2 0 2 1 1 0 1 0 8 0 semapl 112 91 0 81 1 0 1 1 0 8 0 shmpl 112 28 0 1 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 2209 0 803 90 2 88 89 0 8 0 ffsino 272 2209 0 803 95 1 94 95 0 8 0 nchpl 144 3213 0 1615 60 0 60 60 0 8 0 uvmvnodes 72 2436 0 0 45 0 45 45 0 8 0 vnodes 208 2436 0 0 129 0 129 129 0 8 0 namei 1024 8999 0 8999 6 5 1 1 0 8 1 percpumem 16 49 0 16 1 0 1 1 0 8 0 vcpupl 1984 6 0 0 1 0 1 1 0 8 0 vmpool 560 10 0 4 1 0 1 1 0 8 0 pfiaddrpl 120 22 0 22 5 4 1 1 0 8 1 scxspl 192 9562 0 9562 11 10 1 7 0 8 1 plimitpl 152 74 0 66 1 0 1 1 0 8 0 sigapl 424 830 0 797 4 0 4 4 0 8 0 futexpl 56 9213 0 9213 4 3 1 1 0 8 1 knotepl 112 95 0 76 1 0 1 1 0 8 0 kqueuepl 144 98 0 95 1 0 1 1 0 8 0 pipepl 304 182 0 172 6 4 2 2 0 8 1 fdescpl 496 814 0 797 3 0 3 3 0 8 0 filepl 152 5287 0 5182 9 3 6 6 0 8 1 lockfpl 104 139 0 138 1 0 1 1 0 8 0 lockfspl 48 50 0 49 1 0 1 1 0 8 0 sessionpl 112 19 0 8 1 0 1 1 0 8 0 pgrppl 48 23 0 12 1 0 1 1 0 8 0 ucredpl 96 503 0 494 1 0 1 1 0 8 0 zombiepl 144 798 0 797 2 1 1 1 0 8 0 processpl 992 830 0 797 6 1 5 5 0 8 0 procpl 624 2205 0 2162 4 0 4 4 0 8 0 srpgc 64 2 0 2 1 1 0 1 0 8 0 sosppl 128 9 0 9 3 2 1 1 0 8 1 sockpl 400 2015 0 1993 11 6 5 5 0 8 2 mcl64k 65536 9 0 0 2 0 2 2 0 8 0 mcl16k 16384 3 0 0 1 0 1 1 0 8 0 mcl12k 12288 7 0 0 1 0 1 1 0 8 0 mcl9k 9216 5 0 0 1 0 1 1 0 8 0 mcl8k 8192 4 0 0 1 0 1 1 0 8 0 mcl4k 4096 7 0 0 1 0 1 1 0 8 0 mcl2k2 2112 3 0 0 1 0 1 1 0 8 0 mcl2k 2048 181 0 0 22 0 22 22 0 8 0 mtagpl 96 33 0 0 1 0 1 1 0 8 0 mbufpl 256 306 0 0 18 0 18 18 0 8 0 bufpl 280 4398 0 134 305 0 305 305 0 8 0 anonpl 16 90603 0 73278 94 18 76 85 0 124 3 amapchunkpl 152 4592 0 4429 8 1 7 8 0 158 0 amappl16 192 3721 0 2777 72 17 55 59 0 8 7 amappl15 184 1 0 0 1 0 1 1 0 8 0 amappl14 176 539 0 532 1 0 1 1 0 8 0 amappl13 168 92 0 87 2 1 1 1 0 8 0 amappl12 160 59 0 57 2 1 1 1 0 8 0 amappl11 152 278 0 263 1 0 1 1 0 8 0 amappl10 144 22 0 16 1 0 1 1 0 8 0 amappl9 136 401 0 398 2 1 1 1 0 8 0 amappl8 128 379 0 343 2 0 2 2 0 8 0 amappl7 120 124 0 112 1 0 1 1 0 8 0 amappl6 112 25 0 21 2 1 1 1 0 8 0 amappl5 104 436 0 420 1 0 1 1 0 8 0 amappl4 96 781 0 749 1 0 1 1 0 8 0 amappl3 88 690 0 681 1 0 1 1 0 8 0 amappl2 80 5506 0 5424 3 1 2 2 0 8 0 amappl1 72 27230 0 26782 24 14 10 18 0 8 0 amappl 80 2483 0 2430 3 1 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 30 0 1 1 0 1 1 0 8 0 uaddrrnd 24 824 0 801 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 824 0 801 1 0 1 1 0 8 0 vmmpekpl 168 10096 0 10058 2 0 2 2 0 8 0 vmmpepl 168 107627 0 105393 176 49 127 134 0 357 29 vmsppl 368 823 0 801 3 0 3 3 0 8 0 pdppl 4096 1655 0 1608 7 1 6 6 0 8 0 pvpl 32 273503 0 253000 225 42 183 202 0 265 14 pmappl 232 823 0 801 3 1 2 2 0 8 0 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 284 0 21 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(ffffffff826ebff0) 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 __sanitizer_cov_trace_cmp4(b8474,b8475) at __sanitizer_cov_trace_cmp4+0x62 sys/dev/kcov.c:137 __mp_lock(ffffffff828bb610) at __mp_lock+0x139 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff828bb610) at __mp_lock+0x139 sys/kern/kern_lock.c:147 softintr_dispatch(0) at softintr_dispatch+0x4e sys/arch/amd64/amd64/softintr.c:89 Xsoftclock() at Xsoftclock+0x1f __sanitizer_cov_trace_cmp8(57,14b) at __sanitizer_cov_trace_cmp8+0x11 kd_curproc sys/dev/kcov.c:397 [inline] __sanitizer_cov_trace_cmp8(57,14b) at __sanitizer_cov_trace_cmp8+0x11 trace_cmp sys/dev/kcov.c:104 [inline] __sanitizer_cov_trace_cmp8(57,14b) at __sanitizer_cov_trace_cmp8+0x11 sys/dev/kcov.c:142 syscall(ffff800023104560) at syscall+0x129 sys/arch/amd64/amd64/trap.c:535 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffc5a70, count: -10 ddb{0}> machine ddbcpu 1 Stopped at ifa_update_broadaddr+0x1f: movzbl 0(%r15),%r12d ddb{1}> trace ifa_update_broadaddr(ffff800000ac5000,ffff800000b07600,ffff8000230f6140) at ifa_update_broadaddr+0x1f sys/net/if.c:3070 in_ioctl(80206913,ffff8000230f6130,ffff800000ac5000,1) at in_ioctl+0x5eb sys/netinet/in.c:320 ifioctl(fffffd8065cc69b0,80206913,ffff8000230f6130,ffff800020e03eb8) at ifioctl+0xe70 sys/net/if.c:2282 soo_ioctl(fffffd8065d17558,80206913,ffff8000230f6130,ffff800020e03eb8) at soo_ioctl+0x27c sys/kern/sys_socket.c:138 sys_ioctl(ffff800020e03eb8,ffff8000230f6248,ffff8000230f6290) at sys_ioctl+0x4a5 syscall(ffff8000230f6310) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff8000230f6310) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x25337ca810, count: -7