kernel: protection fault trap, code=0 Stopped at nd6_timer+0x67: movq 0x48(%r13),%r12 ddb{0}> ddb{0}> set $lines = 0 ddb{0}> set $maxwidth = 0 ddb{0}> show panic the kernel did not panic ddb{0}> trace nd6_timer(0) at nd6_timer+0x67 sys/netinet6/nd6.c:278 timeout_run(ffffffff835fcef0) at timeout_run+0x118 softclock_thread(ffff8000ffffef30) at softclock_thread+0x163 sys/kern/kern_timeout.c:814 end trace frame: 0x0, count: -3 ddb{0}> show registers rdi 0 rsi 0x1 rbp 0xffff800029f9b860 rbx 0xc57380584fec316c rdx 0 rcx 0xffff8000ffffef30 rax 0xffffffff8341fff0 cpu_info_full_primary+0x1ff0 r8 0x2 r9 0 r10 0x5316382030b650da r11 0xbf3d37ca93afeb76 r12 0x1 r13 0xdeadbeefdeadbeef r14 0x185 r15 0x15305 acpi_pdirpa+0x1176 rip 0xffffffff82d047f7 nd6_timer+0x67 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff800029f9b820 ss 0 nd6_timer+0x67: movq 0x48(%r13),%r12 ddb{0}> show proc PROC (softclock) tid=314217 pid=48887 tcnt=1 stat=onproc flags process=14000 proc=40000200 runpri=0, usrpri=50, slppri=0, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff8000fffff440,0xffff8000ffffe7a8 process=0xffff800029f8db00 user=0xffff800029f96000, vmspace=0xffffffff835c28f8 estcpu=0, cpticks=0, pctcpu=2.15, user=0, sys=411, intr=678 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 42036 366378 96899 0 2 0x8000000 syz-executor 42036 390313 96899 0 3 0xc000080 sbwait syz-executor 89487 10784 33925 0 3 0x8000082 wait syz-executor 13285 399084 33925 0 3 0x8000082 wait syz-executor 73426 256846 33925 0 2 0x8000482 syz-executor 72519 83514 33925 0 3 0x8000082 wait syz-executor 29204 134679 33925 0 2 0x8000002 syz-executor 159 409923 33925 0 2 0x8000482 syz-executor 18940 506202 33925 0 2 0x8000482 syz-executor 96899 520261 33925 0 2 0x8000482 syz-executor 70651 378805 0 0 3 0x14200 acct acct 31289 95427 1 0 3 0x18100083 ttyin getty 76720 485710 0 0 3 0x14280 nfsidl nfsio 54125 514703 0 0 3 0x14280 nfsidl nfsio 68717 517801 0 0 3 0x14280 nfsidl nfsio 3398 263871 0 0 3 0x14280 nfsidl nfsio 21064 512843 0 0 3 0x14280 nfsidl nfsio 57425 362377 0 0 3 0x14280 nfsidl nfsio 3448 155226 0 0 3 0x14280 nfsidl nfsio 71576 61277 0 0 3 0x14280 nfsidl nfsio 86279 348919 0 0 3 0x14280 nfsidl nfsio 40407 392580 0 0 3 0x14280 nfsidl nfsio 37681 428771 0 0 3 0x14280 nfsidl nfsio 31435 295593 0 0 3 0x14280 nfsidl nfsio 86065 124440 0 0 3 0x14280 nfsidl nfsio 63220 229833 0 0 3 0x14280 nfsidl nfsio 560 418502 0 0 3 0x14280 nfsidl nfsio 60889 220543 0 0 3 0x14280 nfsidl nfsio 79289 345644 0 0 3 0x14280 nfsidl nfsio 24270 171185 0 0 3 0x14280 nfsidl nfsio 63853 508228 0 0 3 0x14280 nfsidl nfsio 55111 393669 0 0 3 0x14280 nfsidl nfsio 62455 316400 0 0 3 0x14200 bored sosplice 33925 241746 98483 0 2 0x8000482 syz-executor 98483 421523 9 0 3 0x810008a sigsusp ksh 9 318305 71793 0 3 0x18000098 kqread sshd-session 71793 493127 97757 0 3 0x18000092 kqread sshd-session 97757 111254 1 0 3 0x18000088 kqread sshd 40075 433760 9953 74 3 0x19100092 bpf pflogd 9953 216305 1 0 3 0x18000080 sbwait pflogd 4129 380980 37708 73 7 0x19100010 syslogd 37708 198311 1 0 3 0x18100082 sbwait syslogd 97935 342959 1 0 3 0x18100080 kqread resolvd 36600 366141 43307 77 3 0x18100092 kqread dhcpleased 14730 349496 43307 77 3 0x18100092 kqread dhcpleased 43307 421392 1 0 3 0x18000080 kqread dhcpleased 59751 311909 0 0 2 0x14200 smr 2504 448084 0 0 3 0x14200 pgzero zerothread 46836 293854 0 0 3 0x14200 aiodoned aiodoned 55171 176626 0 0 2 0x14600 update 42562 297419 0 0 3 0x14200 cleaner cleaner 29042 407715 0 0 2 0x14200 reaper 52075 424521 0 0 3 0x14200 pgdaemon pagedaemon 72942 300745 0 0 3 0x14200 bored viomb 12789 148591 0 0 3 0x40014200 acpi0 acpi0 66659 467948 0 0 3 0x40014200 idle1 74435 405243 0 0 3 0x14200 bored softnet3 44622 29575 0 0 3 0x14200 bored softnet2 92809 459543 0 0 3 0x14200 bored softnet1 42005 290416 0 0 3 0x14200 bored softnet0 64910 97754 0 0 2 0x14200 systqmp 91218 9911 0 0 3 0x14200 bored systq 22266 55605 0 0 2 0x14200 softclockmp *48887 314217 0 0 7 0x40014200 softclock 18203 229612 0 0 3 0x40014200 idle0 1 370221 0 0 3 0x8000082 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 4129 (syslogd) thread 0xffff8000ffffdbe8 (380980) exclusive rrwlock inode r = 0 (0xfffffd806e4953d0) #0 witness_lock+0x5b8 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5b8 sys/kern/subr_witness.c:1151 #1 rw_enter+0x41b sys/kern/kern_rwlock.c:309 #2 rrw_enter+0xbe sys/kern/kern_rwlock.c:464 #3 VOP_LOCK+0xa6 sys/kern/vfs_vops.c:524 #4 vn_lock+0xa4 sys/kern/vfs_vnops.c:564 #5 sys_fsync+0x152 sys/kern/vfs_syscalls.c:2927 #6 syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:179 [inline] #6 syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577 #7 Xsyscall+0x128 Process 29042 (reaper) thread 0xffff800029fd8f38 (407715) exclusive rwlock vmmaplk r = 0 (0xfffffd8076b69630) #0 witness_lock+0x5b8 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5b8 sys/kern/subr_witness.c:1151 #1 rw_enter+0x41b sys/kern/kern_rwlock.c:309 #2 vm_map_lock_ln+0x143 sys/uvm/uvm_map.c:5277 #3 uvm_map_teardown+0x104 sys/uvm/uvm_map.c:2488 #4 uvmspace_free+0xe8 sys/uvm/uvm_map.c:3447 #5 reaper+0x25b sys/kern/kern_exit.c:480 #6 proc_trampoline+0x10 Process 48887 (softclock) thread 0xffff8000ffffef30 (314217) exclusive rwlock netlock r = 0 (0xffffffff8349c5b0) #0 witness_lock+0x5b8 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5b8 sys/kern/subr_witness.c:1151 #1 nd6_timer+0x2e sys/netinet6/nd6.c:271 #2 timeout_run+0x118 #3 softclock_thread+0x163 sys/kern/kern_timeout.c:814 #4 proc_trampoline+0x10 shared rwlock timeout r = 0 (0xffffffff8346bfc0) #0 witness_lock+0x5b8 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5b8 sys/kern/subr_witness.c:1151 #1 timeout_run+0xf1 sys/kern/kern_timeout.c:662 #2 softclock_thread+0x163 sys/kern/kern_timeout.c:814 #3 proc_trampoline+0x10 exclusive kernel_lock &kernel_lock r = 0 (0xffffffff8356b120) #0 witness_lock+0x5b8 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5b8 sys/kern/subr_witness.c:1151 #1 __mp_acquire_count+0x58 #2 mi_switch+0x658 sys/kern/sched_bsd.c:460 #3 sleep_finish+0x229 sys/kern/kern_synch.c:416 #4 msleep+0x13b sys/kern/kern_synch.c:249 #5 softclock_thread+0x11f sys/kern/kern_timeout.c:810 #6 proc_trampoline+0x10 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10216 10315K 10706K 166960K 15548 0 pcb 17 16K 18K 166960K 616 0 rtable 211 15K 16K 166960K 4400 0 pf 35 10K 14K 166960K 372 0 ifaddr 43 16K 17K 166960K 582 0 ifgroup 59 2K 3K 166960K 626 0 sysctl 3 0K 1K 166960K 10 0 counters 66 36K 37K 166960K 358 0 ioctlops 0 0K 4K 166960K 1909 0 iov 0 0K 18K 166960K 174 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1553 98K 98K 166960K 5038 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 9K 166960K 52 0 VM map 2 1K 1K 166960K 2 0 sem 16 5K 5K 166960K 70 0 dirhash 18 3K 3K 166960K 45 0 ACPI 1697 195K 286K 166960K 12548 0 file desc 12 41K 93K 166960K 3823 0 sigio 0 0K 0K 166960K 37 0 proc 70 91K 128K 166960K 4119 0 subproc 104 6K 6K 166960K 1703 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 261 0 in_multi 88 6K 7K 166960K 1526 0 ether_multi 1 0K 0K 166960K 23 0 mrt 1 0K 0K 166960K 4 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 133 599K 599K 166960K 133 0 exec 0 0K 1K 166960K 2394 0 pfkey data 0 0K 0K 166960K 4 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 254 91K 93K 166960K 30361 0 UVM aobj 131 6K 6K 166960K 132 0 pinsyscall 37 74K 103K 166960K 8098 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 129 0 NDP 13 0K 1K 166960K 424 0 temp 77 6816K 14752K 166960K 158024 0 kqueue 13 20K 28K 166960K 349 0 SYN cache 2 16K 16K 166960K 2 0 ddb{0}> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle plcache 128 24 0 0 1 0 1 1 0 8 0 rtpcb 120 739 0 736 7 4 3 3 0 8 2 rtentry 112 1559 0 1468 8 4 4 4 0 8 0 unpcb 144 2413 0 2392 35 29 6 6 0 8 5 syncache 336 3 0 3 1 1 0 1 0 8 0 tcpcb 808 1124 0 1118 43 35 8 8 0 8 7 arp 120 276 0 260 1 0 1 1 0 8 0 ipq 40 9 0 6 3 2 1 1 0 8 0 ipqe 40 225 0 222 3 2 1 1 0 8 0 inpcb 336 4119 0 4111 65 58 7 10 0 8 6 nd6 136 448 0 422 4 2 2 2 0 8 1 pkpcb 40 9 0 9 6 6 0 1 0 8 0 kcovpl 48 131 0 123 1 0 1 1 0 8 0 ppxss 1168 13 0 13 7 7 0 1 0 8 0 pfstscr 40 8 0 8 2 2 0 1 0 8 0 pffrag 232 2 0 2 1 1 0 1 0 482 0 pffrnode 88 2 0 2 1 1 0 1 0 8 0 pffrent 40 4 0 4 1 1 0 1 0 8 0 pfosfp 40 1429 0 1005 5 0 5 5 0 8 0 pfosfpen 112 1429 0 714 21 0 21 21 0 8 0 pfrktable 1344 1 0 1 1 1 0 1 0 8 0 pftag 88 3 0 2 2 1 1 1 0 8 0 pfqueue 264 3 0 3 2 2 0 1 0 8 0 pfstitem 24 52 0 50 1 0 1 1 0 8 0 pfstkey 128 60 0 58 2 1 1 2 0 8 0 pfstate 376 56 0 54 5 4 1 5 0 8 0 pfrule 1344 27 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 6159 0 5754 45 16 29 30 0 8 1 art_table 32 6160 0 5754 4 0 4 4 0 8 0 art_node 16 1556 0 1474 1 0 1 1 0 8 0 sysvmsgpl 40 4 0 2 1 0 1 1 0 8 0 semupl 112 2 0 2 1 1 0 1 0 8 0 semapl 112 66 0 52 1 0 1 1 0 8 0 shmpl 112 129 0 1 4 0 4 4 0 8 0 dirhash 1024 39 0 18 3 0 3 3 0 8 0 dino2pl 256 5374 0 3622 111 1 110 110 0 8 0 ffsino 272 5374 0 3622 119 1 118 118 0 8 0 nchpl 144 8806 0 8085 66 39 27 64 0 8 0 uvmvnodes 80 7970 0 0 163 0 163 163 0 8 0 vnodes 216 7970 0 0 443 0 443 443 0 8 0 namei 1024 44607 0 44607 9 8 1 2 0 8 1 percpumem 16 193 0 146 1 0 1 1 0 8 0 vcpupl 3904 3 0 0 1 0 1 1 0 8 0 vmpool 696 17 0 14 4 3 1 1 0 8 0 kstatmem 264 318 0 292 4 1 3 3 0 8 0 scsiplug 72 11 0 11 9 9 0 1 0 8 0 scxspl 216 76342 0 76342 21 20 1 8 1 8 1 plimitpl 152 786 0 767 1 0 1 1 0 8 0 sigapl 424 3902 0 3830 12 3 9 9 0 8 0 futexpl 64 39841 0 39841 12 11 1 1 0 8 1 knotepl 120 738 0 0 17 0 17 17 0 8 0 kqueuepl 216 816 0 807 7 6 1 5 0 8 0 pipepl 320 949 0 922 22 19 3 8 0 8 0 fdescpl 496 3859 0 3833 12 7 5 5 0 8 1 filepl 152 25916 0 25668 68 50 18 20 0 8 7 lockfpl 104 909 0 907 2 1 1 2 0 8 0 lockfspl 48 376 0 374 1 0 1 1 0 8 0 sessionpl 144 147 0 138 1 0 1 1 0 8 0 pgrppl 48 334 0 317 1 0 1 1 0 8 0 ucredpl 104 3379 0 3366 1 0 1 1 0 8 0 zombiepl 144 3837 0 3830 1 0 1 1 0 8 0 processpl 1152 3902 0 3830 7 1 6 6 0 8 0 procpl 648 7355 0 7271 12 4 8 9 0 8 0 srpgc 96 8 0 8 4 3 1 1 0 8 1 sosppl 168 10 0 10 7 7 0 1 0 8 0 sockpl 664 7301 0 7269 87 76 11 20 0 8 8 mcl64k 65536 3 0 0 1 0 1 1 0 8 0 mcl16k 16384 1 0 0 1 0 1 1 0 8 0 mcl12k 12288 1 0 0 1 0 1 1 0 8 0 mcl9k 9216 1 0 0 1 0 1 1 0 8 0 mcl8k 8192 5 0 0 1 0 1 1 0 8 0 mcl4k 4096 5 0 0 1 0 1 1 0 8 0 mcl2k 2048 334 0 0 28 1 27 28 0 8 0 mtagpl 96 96 0 0 2 0 2 2 0 8 0 mbufpl 256 854 0 0 46 0 46 46 0 8 0 bufpl 280 12957 0 4612 597 0 597 597 0 8 0 anonpl 24 518639 0 509854 82 28 54 55 0 185 0 amapchunkpl 152 96187 0 95359 63 30 33 41 0 158 0 amappl16 200 8380 0 8354 103 97 6 15 0 8 4 amappl15 192 49 0 49 1 1 0 1 0 8 0 amappl14 184 360 0 348 1 0 1 1 0 8 0 amappl13 176 7 0 7 1 1 0 1 0 8 0 amappl12 168 6462 0 6431 3 1 2 2 0 8 0 amappl11 160 56 0 42 1 0 1 1 0 8 0 amappl10 152 13 0 13 1 1 0 1 0 8 0 amappl9 144 170 0 170 1 1 0 1 0 8 0 amappl8 136 25 0 22 1 0 1 1 0 8 0 amappl7 128 389 0 376 1 0 1 1 0 8 0 amappl6 120 1409 0 1408 1 0 1 1 0 8 0 amappl5 112 628 0 616 1 0 1 1 0 8 0 amappl4 104 687 0 665 1 0 1 1 0 8 0 amappl3 96 18717 0 18587 4 0 4 4 0 8 0 amappl2 88 2356 0 2289 2 0 2 2 0 8 0 amappl1 80 26306 0 25715 16 2 14 14 0 8 0 amappl 88 28952 0 28762 5 0 5 5 0 92 0 dma4096 4096 1 0 1 1 1 0 1 0 8 0 dma1024 1024 1 0 0 1 0 1 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 72 131 0 1 3 0 3 3 0 8 0 uaddrrnd 24 3876 0 3842 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 3876 0 3842 1 0 1 1 0 8 0 vmmpekpl 168 33523 0 33469 3 0 3 3 0 8 0 vmmpepl 168 238730 0 236765 163 74 89 97 0 357 2 vmsppl 440 3875 0 3841 8 3 5 5 0 8 0 rwobjpl 56 73275 0 64192 141 13 128 128 0 8 0 pdppl 4096 7759 0 7685 289 213 76 85 0 8 2 pvpl 32 29812 0 0 240 1 239 239 0 265 0 pmappl 248 3875 0 3841 3 0 3 3 0 8 0 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 774 0 343 13 0 13 13 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace nd6_timer(0) at nd6_timer+0x67 sys/netinet6/nd6.c:278 timeout_run(ffffffff835fcef0) at timeout_run+0x118 softclock_thread(ffff8000ffffef30) at softclock_thread+0x163 sys/kern/kern_timeout.c:814 end trace frame: 0x0, count: -3 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp ddb{1}> trace x86_ipi_db(ffff800029b7bff0) at x86_ipi_db+0x27 sys/arch/amd64/amd64/db_interface.c:393 x86_ipi_handler() at x86_ipi_handler+0xd9 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x27 __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x2c kd_curproc sys/dev/kcov.c:589 [inline] __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x2c sys/dev/kcov.c:158 __mp_lock(ffffffff8356af18) at __mp_lock+0x1a3 __mp_lock_spin sys/kern/kern_lock.c:113 [inline] __mp_lock(ffffffff8356af18) at __mp_lock+0x1a3 sys/kern/kern_lock.c:144 __mp_acquire_count(ffffffff8356af18,1) at __mp_acquire_count+0x58 mi_switch() at mi_switch+0x658 sys/kern/sched_bsd.c:460 sleep_finish(0,1) at sleep_finish+0x229 sys/kern/kern_synch.c:416 biowait(fffffd806f4e9238) at biowait+0xc1 sys/kern/vfs_bio.c:1254 bwrite(fffffd806f4e9238) at bwrite+0x2e2 sys/kern/vfs_bio.c:766 ffs_update(fffffd806e495338,1) at ffs_update+0x34c sys/ufs/ffs/ffs_inode.c:111 VOP_FSYNC(fffffd806e24d998,fffffd807f7d38f0,1,ffff8000ffffdbe8) at VOP_FSYNC+0x108 sys/kern/vfs_vops.c:311 sys_fsync(ffff8000ffffdbe8,ffff80002a06a480,ffff80002a06a3d0) at sys_fsync+0x16f sys/kern/vfs_syscalls.c:2927 syscall(ffff80002a06a480) at syscall+0xaf8 mi_syscall sys/sys/syscall_mi.h:179 [inline] syscall(ffff80002a06a480) at syscall+0xaf8 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x71bc8ed6b710, count: -15