kernel: protection 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 the kernel did not panic ddb{1}> trace in_delmulti(fffdfffbffffffff) at in_delmulti+0x8d sys/netinet/in.c:914 in_purgeaddr(ffff800000b24900) at in_purgeaddr+0x156 sys/netinet/in.c:760 in_ifdetach(ffff800000ac6000) at in_ifdetach+0x74 sys/netinet/in.c:971 if_setrdomain(ffff800000ac6000,6) at if_setrdomain+0x19a sys/net/if.c:1771 ifioctl(fffffd80640d6030,8020699f,ffff800021f0d270,ffff800020df4790) at ifioctl+0x16ad sys/net/if.c:2031 soo_ioctl(fffffd80681b53b0,8020699f,ffff800021f0d270,ffff800020df4790) at soo_ioctl+0x27c sys/kern/sys_socket.c:138 sys_ioctl(ffff800020df4790,ffff800021f0d388,ffff800021f0d3d0) at sys_ioctl+0x4a5 syscall(ffff800021f0d450) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800021f0d450) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xbd933ff6ee0, count: -9 ddb{1}> show registers rdi 0xffff800022cf2000 rsi 0x2d0c7 acpi_pdirpa+0x18f2f rbp 0xffff800021f0d020 rbx 0 rdx 0xffff800022cf2000 rcx 0x2d0c6 acpi_pdirpa+0x18f2e rax 0xffffffff823bf7bd in_delmulti+0x8d r8 0xffff800000b24900 r9 0xffffffff81e56833 rt_ifa_purge+0x153 r10 0x5 r11 0x41a01944034e51d9 r12 0 r13 0x3 r14 0xfffdfffbffffffff r15 0x1 rip 0xffffffff823bf7bd in_delmulti+0x8d cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff800021f0cfc0 ss 0x10 in_delmulti+0x8d: movl 0xc(%r14),%r15d ddb{1}> show proc PROC (syz-executor.1) pid=296417 stat=onproc flags process=0 proc=4000000 pri=32, usrpri=80, nice=20 forw=0xffffffffffffffff, list=0xffff800020df5170,0xffffffff828cde18 process=0xffff800020df27e0 user=0xffff800021f08000, vmspace=0xfffffd806e8fea18 estcpu=36, cpticks=0, pctcpu=0.0 user=0, sys=0, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 53627 394227 30622 0 2 0 syz-executor.1 *53627 296417 30622 0 7 0x4000000 syz-executor.1 21772 123265 0 0 3 0x14280 nfsidl nfsio 19065 321061 0 0 3 0x14280 nfsidl nfsio 4239 414548 0 0 3 0x14280 nfsidl nfsio 58380 383133 0 0 3 0x14280 nfsidl nfsio 72318 455060 0 0 3 0x14280 nfsidl nfsio 1481 451081 0 0 3 0x14280 nfsidl nfsio 11800 240605 0 0 3 0x14280 nfsidl nfsio 90294 258488 0 0 3 0x14280 nfsidl nfsio 6615 447704 0 0 3 0x14280 nfsidl nfsio 75507 407132 0 0 3 0x14280 nfsidl nfsio 48972 428355 0 0 3 0x14280 nfsidl nfsio 93346 7019 0 0 3 0x14280 nfsidl nfsio 9075 436996 0 0 3 0x14280 nfsidl nfsio 10971 445723 0 0 3 0x14280 nfsidl nfsio 85214 342058 0 0 3 0x14280 nfsidl nfsio 42161 287577 0 0 3 0x14280 nfsidl nfsio 15666 153316 0 0 3 0x14280 nfsidl nfsio 88301 327774 0 0 3 0x14280 nfsidl nfsio 43964 239627 0 0 3 0x14280 nfsidl nfsio 39266 506344 0 0 3 0x14280 nfsidl nfsio 58521 275341 0 0 3 0x14200 bored sosplice 30622 214614 57234 0 3 0x82 nanosleep syz-executor.1 15603 35632 57234 0 3 0x82 piperd syz-executor.0 57234 280967 19280 0 3 0x82 thrsleep syz-fuzzer 57234 435221 19280 0 3 0x4000082 nanosleep syz-fuzzer 57234 390345 19280 0 2 0x4000002 syz-fuzzer 57234 388164 19280 0 3 0x4000082 thrsleep syz-fuzzer 57234 257017 19280 0 3 0x4000082 thrsleep syz-fuzzer 57234 523265 19280 0 3 0x4000082 thrsleep syz-fuzzer 57234 5850 19280 0 3 0x4000082 thrsleep syz-fuzzer 57234 169423 19280 0 3 0x4000082 kqread syz-fuzzer 19280 256192 30101 0 3 0x10008a pause ksh 30101 32823 41332 0 3 0x92 select sshd 27858 117686 1 0 3 0x100083 ttyin getty 41332 374114 1 0 3 0x80 select sshd 57061 157713 41100 74 3 0x100092 bpf pflogd 41100 365025 1 0 3 0x80 netio pflogd 54468 191635 85167 73 3 0x100090 kqread syslogd 85167 363943 1 0 3 0x100082 netio syslogd 37476 22823 1 77 7 0x100090 dhclient 43884 244618 1 0 3 0x80 poll dhclient 13491 56152 0 0 3 0x14200 bored smr 41437 58985 0 0 2 0x14200 zerothread 4093 376900 0 0 3 0x14200 aiodoned aiodoned 61048 467749 0 0 3 0x14200 syncer update 7748 232810 0 0 3 0x14200 cleaner cleaner 95343 27259 0 0 3 0x14200 reaper reaper 38977 9940 0 0 3 0x14200 pgdaemon pagedaemon 56223 322967 0 0 3 0x14200 bored crynlk 42975 478041 0 0 3 0x14200 bored crypto 71138 416952 0 0 3 0x40014200 acpi0 acpi0 75456 158707 0 0 3 0x40014200 idle1 25347 211226 0 0 3 0x14200 bored softnet 13966 55704 0 0 2 0x14200 systqmp 43922 86768 0 0 3 0x14200 bored systq 35923 113895 0 0 3 0x40014200 bored softclock 99542 231943 0 0 3 0x40014200 idle0 1 314392 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 53627 (syz-executor.1) thread 0xffff800020df4790 (296417) exclusive rwlock netlock r = 0 (0xffffffff827713e0) #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:2031 #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 = 0 (0xffffffff82933348) #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 9514 6430K 7562K 78643K 12660 0 pcb 13 8K 8K 78643K 101 0 rtable 89 4K 5K 78643K 276 0 ifaddr 81 16K 17K 78643K 113 0 sysctl 2 0K 0K 78643K 2 0 counters 43 33K 34K 78643K 51 0 ioctlops 0 0K 4K 78643K 1564 0 iov 0 0K 16K 78643K 47 0 mount 1 1K 1K 78643K 1 0 vnodes 1222 77K 77K 78643K 1723 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 0K 78643K 144 0 dirhash 9 1K 2K 78643K 12 0 ACPI 1824 197K 290K 78643K 13058 0 file desc 5 13K 25K 78643K 515 0 sigio 0 0K 0K 78643K 4 0 proc 61 63K 95K 78643K 469 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 32 0 in_multi 61 3K 3K 78643K 84 0 ether_multi 1 0K 0K 78643K 7 0 mrt 0 0K 0K 78643K 6 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 227 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 185 46K 62K 78643K 2582 0 UVM aobj 18 2K 3K 78643K 25 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 54 0 NDP 12 0K 0K 78643K 20 0 temp 116 3872K 3936K 78643K 3873 0 kqueue 3 4K 18K 78643K 33 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 21 0 19 1 0 1 1 0 8 0 rtentry 112 52 0 21 2 0 2 2 0 8 0 unpcb 120 214 0 203 1 0 1 1 0 8 0 syncache 272 4 0 4 1 1 0 1 0 8 0 tcpqe 32 211 0 211 1 1 0 1 0 8 0 tcpcb 592 150 0 144 3 2 1 2 0 8 0 inpcb 296 838 0 830 4 2 2 2 0 8 1 rttmr 72 1 0 1 1 1 0 1 0 8 0 nd6 48 8 0 2 1 0 1 1 0 8 0 pkpcb 40 6 0 6 2 2 0 1 0 8 0 ppxss 1136 1 0 1 1 1 0 1 0 8 0 pffrag 232 5 0 4 2 1 1 1 0 482 0 pffrnode 88 5 0 4 2 1 1 1 0 8 0 pffrent 40 182 0 181 2 1 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 pfrktable 1344 3 0 1 1 0 1 1 0 8 0 pftag 88 3 0 2 1 0 1 1 0 8 0 pfstitem 24 14 0 7 1 0 1 1 0 8 0 pfstkey 112 14 0 7 1 0 1 1 0 8 0 pfstate 328 14 0 7 2 1 1 2 0 8 0 pfrule 1360 26 0 19 2 1 1 2 0 8 0 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 265 0 103 13 2 11 12 0 8 0 art_table 32 267 0 103 2 0 2 2 0 8 0 art_node 16 50 0 21 1 0 1 1 0 8 0 sysvmsgpl 40 20 0 13 1 0 1 1 0 8 0 semupl 112 4 0 4 1 1 0 1 0 8 0 semapl 112 140 0 130 1 0 1 1 0 8 0 shmpl 112 22 0 7 1 0 1 1 0 8 0 dirhash 1024 17 0 10 3 1 2 3 0 8 0 dino2pl 256 2055 0 655 88 0 88 88 0 8 0 ffsino 272 2055 0 655 94 0 94 94 0 8 0 nchpl 144 2931 0 1325 60 0 60 60 0 8 0 uvmvnodes 72 2551 0 0 47 0 47 47 0 8 0 vnodes 208 2551 0 0 135 0 135 135 0 8 0 namei 1024 8199 0 8199 3 2 1 1 0 8 1 percpumem 16 36 0 4 1 0 1 1 0 8 0 vcpupl 1984 3 0 0 1 0 1 1 0 8 0 vmpool 560 5 0 2 1 0 1 1 0 8 0 pfiaddrpl 120 2 0 0 1 0 1 1 0 8 0 scxspl 200 8493 0 8493 10 9 1 7 0 8 1 plimitpl 152 39 0 31 1 0 1 1 0 8 0 sigapl 424 751 0 699 6 0 6 6 0 8 0 futexpl 56 8136 0 8136 3 2 1 1 0 8 1 knotepl 112 96 0 76 1 0 1 1 0 8 0 kqueuepl 152 78 0 76 1 0 1 1 0 8 0 pipepl 304 135 0 124 4 3 1 2 0 8 0 fdescpl 496 715 0 699 3 0 3 3 0 8 0 filepl 152 4109 0 4005 5 0 5 5 0 8 0 lockfpl 104 108 0 107 1 0 1 1 0 8 0 lockfspl 48 39 0 38 1 0 1 1 0 8 0 sessionpl 120 18 0 7 1 0 1 1 0 8 0 pgrppl 48 32 0 21 1 0 1 1 0 8 0 ucredpl 96 286 0 277 1 0 1 1 0 8 0 zombiepl 144 699 0 699 3 2 1 1 0 8 1 processpl 1008 751 0 699 7 0 7 7 0 8 0 procpl 632 1753 0 1693 6 0 6 6 0 8 0 srpgc 72 2 0 0 1 0 1 1 0 8 0 sosppl 144 7 0 7 3 3 0 1 0 8 0 sockpl 400 1081 0 1060 7 4 3 4 0 8 0 mcl64k 65536 8 0 0 1 0 1 1 0 8 0 mcl16k 16384 3 0 0 1 0 1 1 0 8 0 mcl12k 12288 6 0 0 1 0 1 1 0 8 0 mcl9k 9216 3 0 0 1 0 1 1 0 8 0 mcl8k 8192 2 0 0 1 0 1 1 0 8 0 mcl4k 4096 9 0 0 2 0 2 2 0 8 0 mcl2k2 2112 3 0 0 1 0 1 1 0 8 0 mcl2k 2048 281 0 0 35 0 35 35 0 8 0 mtagpl 96 230 0 0 6 0 6 6 0 8 0 mbufpl 256 830 0 0 50 0 50 50 0 8 0 bufpl 280 4042 0 127 280 0 280 280 0 8 0 anonpl 16 89406 0 71192 112 38 74 90 0 124 0 amapchunkpl 152 5069 0 4773 27 14 13 26 0 158 0 amappl16 192 3175 0 2336 73 31 42 54 0 8 0 amappl15 184 1 0 0 1 0 1 1 0 8 0 amappl14 176 7 0 2 1 0 1 1 0 8 0 amappl13 168 448 0 441 1 0 1 1 0 8 0 amappl12 160 427 0 420 1 0 1 1 0 8 0 amappl11 152 57 0 42 1 0 1 1 0 8 0 amappl10 144 93 0 87 1 0 1 1 0 8 0 amappl9 136 372 0 371 1 0 1 1 0 8 0 amappl8 128 398 0 335 3 0 3 3 0 8 0 amappl7 120 190 0 175 1 0 1 1 0 8 0 amappl6 112 33 0 26 1 0 1 1 0 8 0 amappl5 104 614 0 598 1 0 1 1 0 8 0 amappl4 96 486 0 457 1 0 1 1 0 8 0 amappl3 88 197 0 188 1 0 1 1 0 8 0 amappl2 80 5184 0 5110 2 0 2 2 0 8 0 amappl1 72 29554 0 29119 23 13 10 18 0 8 0 amappl 80 2039 0 1956 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 24 0 7 1 0 1 1 0 8 0 uaddrrnd 24 720 0 701 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 720 0 701 1 0 1 1 0 8 0 vmmpekpl 168 8612 0 8574 2 0 2 2 0 8 0 vmmpepl 168 98899 0 96820 149 57 92 113 0 357 0 vmsppl 368 719 0 701 2 0 2 2 0 8 0 pdppl 4096 1447 0 1405 7 1 6 6 0 8 0 pvpl 32 267111 0 245639 244 69 175 210 0 265 1 pmappl 232 719 0 701 3 1 2 2 0 8 0 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 314 0 14 9 0 9 9 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp ddb{0}> trace x86_ipi_db(ffffffff82785ff0) 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_pc() at __sanitizer_cov_trace_pc+0x36 kd_curproc sys/dev/kcov.c:454 [inline] __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x36 sys/dev/kcov.c:112 __mp_acquire_count(ffffffff82933140,2) at __mp_acquire_count+0x51 sys/kern/kern_lock.c:227 mi_switch() at mi_switch+0x392 sys/kern/sched_bsd.c:435 sleep_finish(ffff800020e17f90,1) at sleep_finish+0x113 sys/kern/kern_synch.c:418 sleep_finish_all(ffff800020e17f90,1) at sleep_finish_all+0x32 sleep_finish_timeout sys/kern/kern_synch.c:447 [inline] sleep_finish_all(ffff800020e17f90,1) at sleep_finish_all+0x32 sys/kern/kern_synch.c:393 tsleep(ffffffff828c1bbc,118,ffffffff8246aadb,41cb5d) at tsleep+0x1cc sys/kern/kern_synch.c:155 doppoll(ffff800020dd78b8,7f7fffff1be0,3,ffff800020e18128,0,ffff800020e181e0) at doppoll+0x57e sys/kern/sys_generic.c:968 sys_poll(ffff800020dd78b8,ffff800020e18190,ffff800020e181e0) at sys_poll+0xa6 syscall(ffff800020e18260) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800020e18260) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7fffff1bc0, count: -13 ddb{0}> machine ddbcpu 1 Stopped at in_delmulti+0x8d: movl 0xc(%r14),%r15d ddb{1}> trace in_delmulti(fffdfffbffffffff) at in_delmulti+0x8d sys/netinet/in.c:914 in_purgeaddr(ffff800000b24900) at in_purgeaddr+0x156 sys/netinet/in.c:760 in_ifdetach(ffff800000ac6000) at in_ifdetach+0x74 sys/netinet/in.c:971 if_setrdomain(ffff800000ac6000,6) at if_setrdomain+0x19a sys/net/if.c:1771 ifioctl(fffffd80640d6030,8020699f,ffff800021f0d270,ffff800020df4790) at ifioctl+0x16ad sys/net/if.c:2031 soo_ioctl(fffffd80681b53b0,8020699f,ffff800021f0d270,ffff800020df4790) at soo_ioctl+0x27c sys/kern/sys_socket.c:138 sys_ioctl(ffff800020df4790,ffff800021f0d388,ffff800021f0d3d0) at sys_ioctl+0x4a5 syscall(ffff800021f0d450) at syscall+0x4a4 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800021f0d450) at syscall+0x4a4 sys/arch/amd64/amd64/trap.c:570 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xbd933ff6ee0, count: -9