uvm_fault(0xfffffd806e8fb178, 0xafb9, 0, 1) -> e kernel: page fault trap, code=0 Stopped at in_delmulti+0x8d: movl 0xc(%r14),%r15d ddb{1}> ddb{1}> set $lines = 0 ddb{1}> set $maxwidth = 0 ddb{1}> show panic kernel page fault uvm_fault(0xfffffd806e8fb178, 0xafb9, 0, 1) -> e in_delmulti(afad) at in_delmulti+0x8d sys/netinet/in.c:914 end trace frame: 0xffff800023f28d20, count: 0 ddb{1}> trace in_delmulti(afad) at in_delmulti+0x8d sys/netinet/in.c:914 in_purgeaddr(ffff800000b0af00) at in_purgeaddr+0x156 sys/netinet/in.c:760 in_ifdetach(ffff800000af2800) at in_ifdetach+0x74 sys/netinet/in.c:971 if_setrdomain(ffff800000af2800,6) at if_setrdomain+0x19a sys/net/if.c:1778 ifioctl(fffffd807b7b9018,8020699f,ffff800023f28f20,ffff800020eb4508) at ifioctl+0x16ad sys/net/if.c:2038 soo_ioctl(fffffd8067cb23b0,8020699f,ffff800023f28f20,ffff800020eb4508) at soo_ioctl+0x27c sys/kern/sys_socket.c:138 sys_ioctl(ffff800020eb4508,ffff800023f29038,ffff800023f29080) at sys_ioctl+0x4a5 syscall(ffff800023f29100) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800023f29100) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xbb5bfc397f0, count: -9 ddb{1}> show registers rdi 0xffff800021eef000 rsi 0x37b21 acpi_pdirpa+0x23989 rbp 0xffff800023f28cd0 rbx 0 rdx 0xffff800021eef000 rcx 0x37b20 acpi_pdirpa+0x23988 rax 0xffffffff8120951d in_delmulti+0x8d r8 0xffff800000b0af00 r9 0xffffffff8158de33 rt_ifa_purge+0x153 r10 0x5 r11 0xece373462857e46a r12 0 r13 0x3 r14 0xafad __ALIGN_SIZE+0x9fad r15 0x1 rip 0xffffffff8120951d in_delmulti+0x8d cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff800023f28c70 ss 0x10 in_delmulti+0x8d: movl 0xc(%r14),%r15d ddb{1}> show proc PROC (syz-executor.1) pid=459802 stat=onproc flags process=0 proc=4000000 pri=32, usrpri=77, nice=20 forw=0xffffffffffffffff, list=0xffff800020eb49f8,0xffffffff828c6de0 process=0xffff800020eb6fc8 user=0xffff800023f24000, vmspace=0xfffffd806e8fb178 estcpu=36, cpticks=2, pctcpu=0.0 user=0, sys=2, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 68106 511837 43882 0 7 0 syz-executor.1 *68106 459802 43882 0 7 0x4000000 syz-executor.1 38826 106454 1 0 3 0x100083 ttyin getty 42710 57349 0 0 3 0x14200 bored sosplice 43882 386191 68729 0 3 0x82 nanosleep syz-executor.1 32000 349068 68729 0 3 0x82 nanosleep syz-executor.0 68729 423801 36620 0 3 0x82 thrsleep syz-fuzzer 68729 82564 36620 0 3 0x4000082 thrsleep syz-fuzzer 68729 25926 36620 0 3 0x4000082 thrsleep syz-fuzzer 68729 445910 36620 0 3 0x4000082 thrsleep syz-fuzzer 68729 248728 36620 0 3 0x4000082 thrsleep syz-fuzzer 68729 358723 36620 0 3 0x4000082 thrsleep syz-fuzzer 68729 81816 36620 0 3 0x4000082 thrsleep syz-fuzzer 68729 196179 36620 0 3 0x4000082 kqread syz-fuzzer 36620 200327 27577 0 3 0x10008a pause ksh 27577 462386 37379 0 3 0x92 select sshd 37379 323711 1 0 3 0x80 select sshd 26943 136914 24109 74 3 0x100092 bpf pflogd 24109 404573 1 0 3 0x80 netio pflogd 51011 428083 95554 73 3 0x100090 kqread syslogd 95554 507293 1 0 3 0x100082 netio syslogd 3784 487755 1 77 2 0x100090 dhclient 34506 196020 1 0 3 0x80 poll dhclient 16430 183483 0 0 3 0x14200 bored smr 92907 368064 0 0 3 0x14200 pgzero zerothread 45405 521917 0 0 3 0x14200 aiodoned aiodoned 95966 509061 0 0 3 0x14200 syncer update 66621 313523 0 0 3 0x14200 cleaner cleaner 67043 96129 0 0 3 0x14200 reaper reaper 95949 11969 0 0 3 0x14200 pgdaemon pagedaemon 51242 4636 0 0 3 0x14200 bored crynlk 43312 84971 0 0 3 0x14200 bored crypto 22905 161505 0 0 3 0x40014200 acpi0 acpi0 5035 264516 0 0 3 0x40014200 idle1 71374 285827 0 0 3 0x14200 bored softnet 59250 516402 0 0 2 0x14200 systqmp 26751 419721 0 0 3 0x14200 bored systq 34807 408027 0 0 3 0x40014200 bored softclock 19110 413076 0 0 3 0x40014200 idle0 1 197561 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 68106 (syz-executor.1) thread 0xffff800020eb4508 (459802) exclusive rwlock netlock r = 0 (0xffffffff82780fa0) #0 witness_lock+0x4c7 stacktrace_save sys/sys/stacktrace.h:36 [inline] #0 witness_lock+0x4c7 sys/kern/subr_witness.c:1164 #1 ifioctl+0x16a0 sys/net/if.c:2038 #2 soo_ioctl+0x27c sys/kern/sys_socket.c:138 #3 sys_ioctl+0x4a5 #4 syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] #4 syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 #5 Xsyscall+0x128 exclusive kernel_lock &kernel_lock r = 1 (0xffffffff8293cf68) #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 9518 6478K 6788K 78643K 10916 0 pcb 13 8K 8K 78643K 43 0 rtable 101 15K 18K 78643K 363 0 ifaddr 75 14K 16K 78643K 121 0 counters 43 33K 34K 78643K 47 0 ioctlops 0 0K 4K 78643K 1517 0 iov 0 0K 16K 78643K 31 0 mount 1 1K 1K 78643K 1 0 vnodes 1219 77K 77K 78643K 1336 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 9K 78643K 9 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 0K 78643K 52 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1824 197K 290K 78643K 13058 0 file desc 5 13K 25K 78643K 292 0 sigio 0 0K 0K 78643K 4 0 proc 61 63K 95K 78643K 477 0 subproc 32 2K 2K 78643K 37 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 16 0 in_multi 32 2K 2K 78643K 65 0 ether_multi 1 0K 0K 78643K 3 0 mrt 0 0K 0K 78643K 4 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 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 165 43K 44K 78643K 1871 0 UVM aobj 15 2K 2K 78643K 17 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 16 0 NDP 12 0K 0K 78643K 21 0 temp 104 3865K 3929K 78643K 2790 0 kqueue 3 4K 9K 78643K 9 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 2 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtpcb 88 30 0 28 1 0 1 1 0 8 0 rtentry 112 65 0 35 2 0 2 2 0 8 0 unpcb 120 86 0 75 1 0 1 1 0 8 0 syncache 272 8 0 8 3 2 1 1 0 8 1 tcpqe 32 84 0 84 1 1 0 1 0 8 0 tcpcb 592 96 0 92 2 0 2 2 0 8 1 inpcb 296 286 0 278 2 0 2 2 0 8 1 rttmr 72 2 0 2 1 0 1 1 0 8 1 nd6 48 14 0 10 1 0 1 1 0 8 0 ppxss 1136 2 0 2 1 1 0 1 0 8 0 pfstscr 40 4 0 4 1 1 0 1 0 8 0 pffrag 232 5 0 4 1 0 1 1 0 482 0 pffrnode 88 5 0 4 1 0 1 1 0 8 0 pffrent 40 13 0 12 1 0 1 1 0 8 0 pfosfp 40 847 0 423 5 0 5 5 0 8 0 pfosfpen 112 1430 0 714 21 0 21 21 0 8 0 pfrktable 1344 37 0 30 2 1 1 2 0 8 0 pftag 88 1 0 0 1 0 1 1 0 8 0 pfqueue 264 2 0 2 1 0 1 1 0 8 1 pfstitem 24 40 0 11 1 0 1 1 0 8 0 pfstkey 112 42 0 13 2 0 2 2 0 8 0 pfstate 328 40 0 11 4 0 4 4 0 8 0 pfrule 1360 28 0 21 2 1 1 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 357 0 219 15 1 14 15 0 8 2 art_table 32 358 0 219 2 0 2 2 0 8 0 art_node 16 64 0 36 1 0 1 1 0 8 0 sysvmsgpl 40 5 0 4 2 1 1 1 0 8 0 semupl 112 1 0 1 1 1 0 1 0 8 0 semapl 112 48 0 38 1 0 1 1 0 8 0 shmpl 112 14 0 2 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1771 0 368 89 0 89 89 0 8 1 ffsino 272 1771 0 368 94 0 94 94 0 8 0 nchpl 144 2583 0 974 60 0 60 60 0 8 0 uvmvnodes 72 1893 0 0 35 0 35 35 0 8 0 vnodes 208 1893 0 0 100 0 100 100 0 8 0 namei 1024 6881 0 6881 1 0 1 1 0 8 1 percpumem 16 34 0 2 1 0 1 1 0 8 0 vcpupl 1984 2 0 0 1 0 1 1 0 8 0 vmpool 560 6 0 4 1 0 1 1 0 8 0 pfiaddrpl 120 12 0 6 1 0 1 1 0 8 0 scxspl 200 7052 0 7052 6 5 1 5 0 8 1 plimitpl 152 26 0 18 1 0 1 1 0 8 0 sigapl 424 509 0 477 4 0 4 4 0 8 0 futexpl 56 3724 0 3724 1 0 1 1 0 8 1 knotepl 112 68 0 48 1 0 1 1 0 8 0 kqueuepl 152 31 0 29 1 0 1 1 0 8 0 pipepl 304 108 0 97 2 0 2 2 0 8 1 fdescpl 496 493 0 477 3 0 3 3 0 8 0 filepl 152 2816 0 2712 5 0 5 5 0 8 0 lockfpl 104 47 0 46 1 0 1 1 0 8 0 lockfspl 48 16 0 15 1 0 1 1 0 8 0 sessionpl 120 19 0 8 1 0 1 1 0 8 0 pgrppl 48 23 0 12 1 0 1 1 0 8 0 ucredpl 96 259 0 250 1 0 1 1 0 8 0 zombiepl 144 477 0 476 1 0 1 1 0 8 0 processpl 1008 509 0 476 5 0 5 5 0 8 0 procpl 632 1045 0 1004 5 0 5 5 0 8 1 srpgc 72 2 0 0 1 0 1 1 0 8 0 sosppl 144 7 0 7 1 0 1 1 0 8 1 sockpl 400 404 0 383 4 1 3 4 0 8 0 mcl64k 65536 8 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 2 0 0 1 0 1 1 0 8 0 mcl8k 8192 5 0 0 1 0 1 1 0 8 0 mcl4k 4096 3 0 0 1 0 1 1 0 8 0 mcl2k2 2112 1 0 0 1 0 1 1 0 8 0 mcl2k 2048 286 0 0 35 0 35 35 0 8 0 mtagpl 96 17 0 0 1 0 1 1 0 8 0 mbufpl 256 318 0 0 19 0 19 19 0 8 0 bufpl 280 3743 0 128 259 0 259 259 0 8 0 anonpl 16 64041 0 45666 81 6 75 80 0 124 0 amapchunkpl 152 2803 0 2520 16 4 12 16 0 158 0 amappl16 192 1980 0 1110 44 0 44 44 0 8 0 amappl15 184 1 0 0 1 0 1 1 0 8 0 amappl14 176 133 0 129 1 0 1 1 0 8 0 amappl13 168 28 0 25 1 0 1 1 0 8 0 amappl12 160 156 0 152 1 0 1 1 0 8 0 amappl11 152 191 0 173 1 0 1 1 0 8 0 amappl10 144 20 0 15 1 0 1 1 0 8 0 amappl9 136 362 0 361 1 0 1 1 0 8 0 amappl8 128 347 0 305 2 0 2 2 0 8 0 amappl7 120 116 0 103 1 0 1 1 0 8 0 amappl6 112 29 0 25 1 0 1 1 0 8 0 amappl5 104 399 0 383 1 0 1 1 0 8 0 amappl4 96 625 0 597 1 0 1 1 0 8 0 amappl3 88 256 0 245 1 0 1 1 0 8 0 amappl2 80 3005 0 2935 2 0 2 2 0 8 0 amappl1 72 22787 0 22338 23 13 10 18 0 8 0 amappl 80 1336 0 1259 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 16 0 2 1 0 1 1 0 8 0 uaddrrnd 24 499 0 481 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 499 0 481 1 0 1 1 0 8 0 vmmpekpl 168 7362 0 7323 2 0 2 2 0 8 0 vmmpepl 168 68972 0 66882 122 15 107 116 0 357 12 vmsppl 368 498 0 481 2 0 2 2 0 8 0 pdppl 4096 1005 0 964 6 0 6 6 0 8 0 pvpl 32 207774 0 186239 190 5 185 190 0 265 9 pmappl 232 498 0 481 2 0 2 2 0 8 0 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 280 0 7 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(ffffffff82738ff0) 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(ffffffff8293cd60,ffffffff8293cd60) at __sanitizer_cov_trace_cmp4+0x24 kd_curproc sys/dev/kcov.c:442 [inline] __sanitizer_cov_trace_cmp4(ffffffff8293cd60,ffffffff8293cd60) at __sanitizer_cov_trace_cmp4+0x24 trace_cmp sys/dev/kcov.c:134 [inline] __sanitizer_cov_trace_cmp4(ffffffff8293cd60,ffffffff8293cd60) at __sanitizer_cov_trace_cmp4+0x24 sys/dev/kcov.c:163 softintr_dispatch(0) at softintr_dispatch+0x4e sys/arch/amd64/amd64/softintr.c:89 Xsoftclock() at Xsoftclock+0x1f end of kernel end trace frame: 0x7f7ffffee480, count: -6 ddb{0}> machine ddbcpu 1 Stopped at in_delmulti+0x8d: movl 0xc(%r14),%r15d ddb{1}> trace in_delmulti(afad) at in_delmulti+0x8d sys/netinet/in.c:914 in_purgeaddr(ffff800000b0af00) at in_purgeaddr+0x156 sys/netinet/in.c:760 in_ifdetach(ffff800000af2800) at in_ifdetach+0x74 sys/netinet/in.c:971 if_setrdomain(ffff800000af2800,6) at if_setrdomain+0x19a sys/net/if.c:1778 ifioctl(fffffd807b7b9018,8020699f,ffff800023f28f20,ffff800020eb4508) at ifioctl+0x16ad sys/net/if.c:2038 soo_ioctl(fffffd8067cb23b0,8020699f,ffff800023f28f20,ffff800020eb4508) at soo_ioctl+0x27c sys/kern/sys_socket.c:138 sys_ioctl(ffff800020eb4508,ffff800023f29038,ffff800023f29080) at sys_ioctl+0x4a5 syscall(ffff800023f29100) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800023f29100) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xbb5bfc397f0, count: -9