kernel: protection fault trap, code=0 Stopped at ktrops+0x4e: movq 0x8(%rbx),%r14 ddb{0}> ddb{0}> set $lines = 0 ddb{0}> set $maxwidth = 0 ddb{0}> show panic the kernel did not panic ddb{0}> trace ktrops(ffff80002a1a9aa0,deadbeefdeadbeef,0,80001302,fffffd807e022d98,fffffd807f7d7410) at ktrops+0x4e ktrcanset sys/kern/kern_ktrace.c:718 [inline] ktrops(ffff80002a1a9aa0,deadbeefdeadbeef,0,80001302,fffffd807e022d98,fffffd807f7d7410) at ktrops+0x4e sys/kern/kern_ktrace.c:561 doktrace(fffffd807e022d98,4,1302,0,ffff80002a1a9aa0) at doktrace+0x524 ktrsetchildren sys/kern/kern_ktrace.c:586 [inline] doktrace(fffffd807e022d98,4,1302,0,ffff80002a1a9aa0) at doktrace+0x524 sys/kern/kern_ktrace.c:508 sys_ktrace(ffff80002a1a9aa0,ffff80002d4e4c70,ffff80002d4e4bc0) at sys_ktrace+0xd6 sys/kern/kern_ktrace.c:549 syscall(ffff80002d4e4c70) at syscall+0x533 mi_syscall sys/sys/syscall_mi.h:183 [inline] syscall(ffff80002d4e4c70) at syscall+0x533 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xf39224a8400, count: -5 ddb{0}> show registers rdi 0xffff80002a1a9aa0 rsi 0xdeadbeefdeadbeef rbp 0xffff80002d4e4990 rbx 0xdeadbeefdeadbeef rdx 0 rcx 0xffff80002a1a9aa0 rax 0xffffffff82d4cff0 cpu_info_full_primary+0x1ff0 r8 0xfffffd807e022d98 r9 0xfffffd807f7d7410 r10 0xff8e5b052d3f3755 r11 0x769c4b38f38d0769 r12 0xdeadbeefdeadbeef r13 0xfffffd807f7d7410 r14 0xffff80002a1a9aa0 r15 0x80001302 __kernel_virt_to_phys+0x1302 rip 0xffffffff82316d6e ktrops+0x4e cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80002d4e4910 ss 0 ktrops+0x4e: movq 0x8(%rbx),%r14 ddb{0}> show proc PROC (syz-executor.7) tid=456479 pid=20945 tcnt=2 stat=onproc flags process=10 proc=4000000 runpri=17, usrpri=82, slppri=17, nice=20 wchan=0x0, wmesg=, ps_single=0x0 forw=0xffffffffffffffff, list=0xffff80002a17e560,0xffffffff82d98c00 process=0xffff80002db24910 user=0xffff80002d4df000, vmspace=0xfffffd80630d3c70 estcpu=36, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 20945 421882 29033 60928 7 0x10 syz-executor.7 *20945 456479 29033 60928 7 0x4000010 syz-executor.7 71296 55560 70550 0 2 0 syz-executor.6 71296 51113 70550 0 3 0x4000080 kqread syz-executor.6 71296 403395 70550 0 3 0x4000080 fsleep syz-executor.6 66458 116471 48311 0 3 0x80 nanoslp syz-executor.0 66458 387838 48311 0 3 0x4000080 kqread syz-executor.0 66458 109440 48311 0 3 0x4000080 fsleep syz-executor.0 2708 302791 50080 0 3 0x80 nanoslp syz-executor.2 2708 71401 50080 0 3 0x4000080 netcon syz-executor.2 2708 49186 50080 0 3 0x4000080 fsleep syz-executor.2 2708 167302 50080 0 3 0x4000080 fsleep syz-executor.2 53786 444568 12736 0 3 0x4081000 smrbar syz-executor.4 53786 368174 12736 0 3 0x4081000 clonelk syz-executor.4 53786 105139 12736 0 3 0x4003000 suspend syz-executor.4 12736 396223 99322 0 3 0x82 nanoslp syz-executor.4 68159 504509 99322 0 2 0x2 syz-executor.1 77316 292780 1 0 3 0x100083 ttyin getty 70550 476223 99322 0 3 0x82 nanoslp syz-executor.6 50080 519996 99322 0 3 0x82 nanoslp syz-executor.2 48311 292776 99322 0 3 0x82 nanoslp syz-executor.0 59810 233838 0 0 3 0x14280 nfsidl nfsio 88859 396584 0 0 3 0x14280 nfsidl nfsio 53129 316425 0 0 3 0x14280 nfsidl nfsio 3350 31915 0 0 3 0x14280 nfsidl nfsio 74379 279994 0 0 3 0x14280 nfsidl nfsio 9988 222322 0 0 3 0x14280 nfsidl nfsio 42321 504531 0 0 3 0x14280 nfsidl nfsio 75097 347210 0 0 3 0x14280 nfsidl nfsio 49544 396908 0 0 3 0x14280 nfsidl nfsio 18471 382474 0 0 3 0x14280 nfsidl nfsio 80755 501020 0 0 3 0x14280 nfsidl nfsio 64024 88848 0 0 3 0x14280 nfsidl nfsio 51232 386737 0 0 3 0x14280 nfsidl nfsio 36862 8749 0 0 3 0x14280 nfsidl nfsio 88759 272778 0 0 3 0x14280 nfsidl nfsio 44967 322330 0 0 3 0x14280 nfsidl nfsio 16488 397230 0 0 3 0x14280 nfsidl nfsio 5711 458924 0 0 3 0x14280 nfsidl nfsio 38410 189480 0 0 3 0x14280 nfsidl nfsio 58343 237553 0 0 3 0x14280 nfsidl nfsio 79547 396001 99322 0 3 0x82 nanoslp syz-executor.3 5282 257145 0 0 3 0x14200 acct acct 1227 400330 0 0 3 0x14200 bored sosplice 29033 306911 99322 0 3 0x82 nanoslp syz-executor.7 99322 495548 6895 0 3 0x2000082 thrsleep syz-fuzzer 99322 274525 6895 0 3 0x6000082 nanoslp syz-fuzzer 99322 153851 6895 0 3 0x6000082 wait syz-fuzzer 99322 55897 6895 0 2 0x6000002 syz-fuzzer 99322 320548 6895 0 3 0x6000082 wait syz-fuzzer 99322 504938 6895 0 3 0x6000082 thrsleep syz-fuzzer 99322 137706 6895 0 3 0x6000082 thrsleep syz-fuzzer 99322 59614 6895 0 3 0x6000082 wait syz-fuzzer 99322 336630 6895 0 3 0x6000082 thrsleep syz-fuzzer 99322 128873 6895 0 3 0x6000082 thrsleep syz-fuzzer 99322 436754 6895 0 3 0x6000082 thrsleep syz-fuzzer 99322 49917 6895 0 3 0x6000082 wait syz-fuzzer 99322 519827 6895 0 3 0x6000082 wait syz-fuzzer 99322 108516 6895 0 3 0x6000082 wait syz-fuzzer 99322 170616 6895 0 2 0x6000002 syz-fuzzer 99322 415390 6895 0 3 0x6000082 wait syz-fuzzer 6895 341408 94602 0 3 0x10008a sigsusp ksh 94602 494670 28181 0 2 0x12 sshd 28181 115209 1 0 3 0x88 kqread sshd 74715 39224 56216 74 3 0x1100092 bpf pflogd 56216 126472 1 0 3 0x80 netio pflogd 30091 34659 53544 73 3 0x1100090 kqread syslogd 53544 208363 1 0 3 0x100082 netio syslogd 63883 366851 1 0 3 0x100080 kqread resolvd 26559 494539 0 0 3 0x14200 bored smr 7313 491725 0 0 2 0x14200 zerothread 96554 283334 0 0 3 0x14200 aiodoned aiodoned 44478 516414 0 0 3 0x14200 syncer update 52888 32322 0 0 3 0x14200 cleaner cleaner 18073 269001 0 0 3 0x14200 reaper reaper 2494 50408 0 0 3 0x14200 pgdaemon pagedaemon 65583 387371 0 0 3 0x14200 bored viomb 32777 445437 0 0 3 0x40014200 acpi0 acpi0 64846 172689 0 0 3 0x40014200 idle1 83184 107788 0 0 3 0x14200 bored softnet3 32968 131832 0 0 3 0x14200 bored softnet2 16865 204564 0 0 3 0x14200 bored softnet1 30107 466417 0 0 3 0x14200 bored softnet0 8611 492881 0 0 3 0x14200 bored systqmp 57625 335830 0 0 3 0x14200 bored systq 90853 489304 0 0 3 0x14200 tmoslp softclockmp 15264 370373 0 0 3 0x40014200 tmoslp softclock 3641 139678 0 0 3 0x40014200 idle0 1 19891 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 20945 (syz-executor.7) thread 0xffff80002a1a9aa0 (456479) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff82dedd20) #0 witness_lock+0x447 #1 __mp_acquire_count+0x48 sys/kern/kern_lock.c:227 #2 mi_switch+0x46f sys/kern/sched_bsd.c:470 #3 sleep_finish+0x19b sys/kern/kern_synch.c:414 #4 biowait+0x91 sys/kern/vfs_bio.c:1254 #5 bwrite+0x21c sys/kern/vfs_bio.c:766 #6 ffs_update+0x28b sys/ufs/ffs/ffs_inode.c:111 #7 ffs_truncate+0xa40 #8 ufs_inactive+0x157 sys/ufs/ufs/ufs_inode.c:84 #9 VOP_INACTIVE+0xc5 sys/kern/vfs_vops.c:489 #10 vrele+0xd3 sys/kern/vfs_subr.c:827 #11 ktrsettrace+0xb7 sys/kern/kern_ktrace.c:122 #12 ktrops+0x1a8 sys/kern/kern_ktrace.c:564 #13 doktrace+0x524 ktrsetchildren sys/kern/kern_ktrace.c:586 [inline] #13 doktrace+0x524 sys/kern/kern_ktrace.c:508 #14 sys_ktrace+0xd6 sys/kern/kern_ktrace.c:549 #15 syscall+0x533 mi_syscall sys/sys/syscall_mi.h:183 [inline] #15 syscall+0x533 sys/arch/amd64/amd64/trap.c:577 #16 Xsyscall+0x128 Process 53786 (syz-executor.4) thread 0xffff80002a1a92a8 (444568) exclusive rwlock clonelk r = 0 (0xffffffff82ce4e50) #0 witness_lock+0x447 #1 if_clone_destroy+0x4d #2 tun_dev_close+0x141 sys/net/if_tun.c:521 #3 spec_close+0x2c7 sys/kern/spec_vnops.c:538 #4 VOP_CLOSE+0xe4 sys/kern/vfs_vops.c:156 #5 vn_closefile+0xdb vn_close sys/kern/vfs_vnops.c:292 [inline] #5 vn_closefile+0xdb sys/kern/vfs_vnops.c:609 #6 fdrop+0xcb sys/kern/kern_descrip.c:1274 #7 closef+0x120 sys/kern/kern_descrip.c:1258 #8 syscall+0x5ae mi_syscall sys/sys/syscall_mi.h:183 [inline] #8 syscall+0x5ae sys/arch/amd64/amd64/trap.c:577 #9 Xsyscall+0x128 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10219 6505K 7021K 166960K 20156 0 pcb 15 16K 18K 166960K 531 0 rtable 200 14K 15K 166960K 1725 0 pf 37 10K 10K 166960K 171 0 ifaddr 43 15K 16K 166960K 161 0 ifgroup 64 2K 2K 166960K 275 0 sysctl 3 0K 0K 166960K 3 0 counters 68 36K 36K 166960K 174 0 ioctlops 0 0K 4K 166960K 1762 0 iov 0 0K 44K 166960K 587 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1471 92K 92K 166960K 4300 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 9K 166960K 104 0 VM map 2 1K 1K 166960K 2 0 sem 12 1K 1K 166960K 861 0 dirhash 12 2K 2K 166960K 60 0 ACPI 1697 195K 286K 166960K 12548 0 file desc 14 49K 89K 166960K 6996 0 sigio 0 0K 0K 166960K 150 0 proc 64 67K 115K 166960K 1301 0 subproc 91 5K 6K 166960K 322 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 624 0 in_multi 77 5K 7K 166960K 362 0 ether_multi 1 0K 0K 166960K 7 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 235 1049K 1049K 166960K 235 0 exec 0 0K 1K 166960K 1137 0 pfkey data 0 0K 0K 166960K 7 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 390 226K 235K 166960K 70620 0 UVM aobj 131 4K 4K 166960K 143 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 237 0 NDP 14 0K 2K 166960K 117 0 temp 70 6771K 6936K 166960K 92129 0 kqueue 8 14K 28K 166960K 509 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 120 306 0 305 3 2 1 3 0 8 0 rtentry 112 454 0 364 4 1 3 4 0 8 0 unpcb 144 4693 0 4681 39 36 3 11 0 8 2 syncache 336 61 0 61 12 11 1 1 0 8 1 tcpqe 32 297 0 297 10 9 1 1 0 8 1 tcpcb 808 1567 0 1544 45 36 9 9 0 8 6 arp 120 57 0 43 1 0 1 1 0 8 0 inpcb 392 5020 0 4994 76 67 9 16 0 8 6 nd6 136 76 0 57 1 0 1 1 0 8 0 pkpcb 40 17 0 17 5 5 0 1 0 8 0 kcovpl 48 24 0 17 1 0 1 1 0 8 0 ppxss 1168 9 0 9 3 3 0 1 0 8 0 pffrag 232 25 0 22 2 1 1 1 0 482 0 pffrnode 88 25 0 22 2 1 1 1 0 8 0 pffrent 40 125 0 122 2 1 1 1 0 8 0 pfosfp 40 1428 0 1005 5 0 5 5 0 8 0 pfosfpen 112 1428 0 714 21 0 21 21 0 8 0 pfstitem 24 215 0 189 1 0 1 1 0 8 0 pfstkey 128 218 0 192 2 0 2 2 0 8 0 pfstate 376 218 0 192 7 4 3 4 0 8 0 pfrule 1344 21 0 16 2 1 1 2 0 8 0 art_heap8 4096 68 0 67 3 2 1 3 0 8 0 art_heap4 256 1675 0 1301 34 10 24 29 0 8 0 art_table 32 1743 0 1368 5 1 4 4 0 8 0 art_node 16 447 0 367 1 0 1 1 0 8 0 sysvmsgpl 40 16 0 13 1 0 1 1 0 8 0 semapl 112 856 0 846 1 0 1 1 0 8 0 shmpl 112 140 0 12 4 0 4 4 0 8 0 dirhash 1024 49 0 32 3 0 3 3 0 8 0 dino2pl 256 10353 0 8887 93 0 93 93 0 8 0 ffsino 272 10353 0 8887 99 0 99 99 0 8 0 nchpl 144 19845 0 18192 64 0 64 64 0 8 0 uvmvnodes 80 5926 0 0 121 0 121 121 0 8 0 vnodes 216 5926 0 0 330 0 330 330 0 8 0 namei 1024 64720 0 64720 5 4 1 2 0 8 1 percpumem 16 101 0 53 1 0 1 1 0 8 0 vcpupl 2048 92 0 0 12 0 12 12 0 8 0 vmpool 696 175 0 83 9 0 9 9 0 8 0 kstatmem 264 134 0 106 2 0 2 2 0 8 0 scxspl 216 57484 0 57484 23 22 1 8 1 8 1 plimitpl 152 909 0 895 1 0 1 1 0 8 0 sigapl 424 7323 0 7258 12 4 8 9 0 8 0 futexpl 64 53086 0 53082 1 0 1 1 0 8 0 knotepl 120 478 0 0 15 1 14 15 0 8 0 kqueuepl 216 1566 0 1559 26 25 1 6 0 8 0 pipepl 320 872 0 845 19 14 5 8 0 8 2 fdescpl 496 7263 0 7239 7 2 5 5 0 8 0 filepl 152 38871 0 38643 65 52 13 19 0 8 2 lockfpl 104 1653 0 1651 4 2 2 2 0 8 1 lockfspl 48 587 0 585 1 0 1 1 0 8 0 sessionpl 144 42 0 27 1 0 1 1 0 8 0 pgrppl 48 140 0 125 1 0 1 1 0 8 0 ucredpl 104 5789 0 5778 1 0 1 1 0 8 0 zombiepl 144 7260 0 7258 1 0 1 1 0 8 0 processpl 1136 7323 0 7258 7 1 6 6 0 8 0 procpl 680 19649 0 19558 14 5 9 10 0 8 0 srpgc 96 22 0 22 9 9 0 1 0 8 0 sosppl 168 72 0 72 12 11 1 1 0 8 1 sockpl 584 10039 0 9998 93 85 8 21 0 8 5 mcl64k 65536 25 0 0 4 1 3 3 0 8 0 mcl16k 16384 18 0 0 3 0 3 3 0 8 0 mcl12k 12288 24 0 0 2 0 2 2 0 8 0 mcl9k 9216 14 0 0 1 0 1 1 0 8 0 mcl8k 8192 18 0 0 3 0 3 3 0 8 0 mcl4k 4096 25 0 0 3 0 3 3 0 8 0 mcl2k2 2112 6 0 0 1 0 1 1 0 8 0 mcl2k 2048 296 0 0 34 3 31 34 0 8 0 mtagpl 96 302 0 0 8 0 8 8 0 8 0 mbufpl 256 1018 0 0 57 0 57 57 0 8 1 bufpl 280 15025 0 8708 452 0 452 452 0 8 0 anonpl 24 788303 0 775974 163 63 100 115 0 186 0 amapchunkpl 152 222921 0 222084 62 22 40 49 0 158 0 amappl16 200 16987 0 16525 93 61 32 38 0 8 5 amappl15 192 13 0 12 1 0 1 1 0 8 0 amappl14 184 203 0 189 2 1 1 2 0 8 0 amappl13 176 49 0 49 2 2 0 1 0 8 0 amappl12 168 8172 0 8143 4 2 2 3 0 8 0 amappl11 160 52 0 44 1 0 1 1 0 8 0 amappl10 152 47 0 33 1 0 1 1 0 8 0 amappl9 144 278 0 278 17 16 1 1 0 8 1 amappl8 136 516 0 399 5 0 5 5 0 8 0 amappl7 128 241 0 219 2 0 2 2 0 8 0 amappl6 120 568 0 550 1 0 1 1 0 8 0 amappl5 112 241 0 232 1 0 1 1 0 8 0 amappl4 104 624 0 587 3 1 2 2 0 8 0 amappl3 96 43694 0 43611 4 1 3 3 0 8 0 amappl2 88 8068 0 8003 3 1 2 3 0 8 0 amappl1 80 35035 0 34584 23 11 12 23 0 8 0 amappl 88 69786 0 69554 8 2 6 7 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 72 142 0 12 3 0 3 3 0 8 0 uaddrrnd 24 7438 0 7322 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 7438 0 7322 1 0 1 1 0 8 0 vmmpekpl 168 55218 0 55139 5 0 5 5 0 8 0 vmmpepl 168 447947 0 445692 296 158 138 140 0 357 22 vmsppl 448 7437 0 7322 16 2 14 14 0 8 0 rwobjpl 56 117282 0 109747 115 4 111 112 0 8 0 pdppl 4096 14883 0 14736 462 307 155 155 0 8 8 pvpl 32 45377 0 0 367 1 366 366 0 265 0 pmappl 248 7437 0 7322 9 1 8 8 0 8 0 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 1001 0 471 16 0 16 16 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace ktrops(ffff80002a1a9aa0,deadbeefdeadbeef,0,80001302,fffffd807e022d98,fffffd807f7d7410) at ktrops+0x4e ktrcanset sys/kern/kern_ktrace.c:718 [inline] ktrops(ffff80002a1a9aa0,deadbeefdeadbeef,0,80001302,fffffd807e022d98,fffffd807f7d7410) at ktrops+0x4e sys/kern/kern_ktrace.c:561 doktrace(fffffd807e022d98,4,1302,0,ffff80002a1a9aa0) at doktrace+0x524 ktrsetchildren sys/kern/kern_ktrace.c:586 [inline] doktrace(fffffd807e022d98,4,1302,0,ffff80002a1a9aa0) at doktrace+0x524 sys/kern/kern_ktrace.c:508 sys_ktrace(ffff80002a1a9aa0,ffff80002d4e4c70,ffff80002d4e4bc0) at sys_ktrace+0xd6 sys/kern/kern_ktrace.c:549 syscall(ffff80002d4e4c70) at syscall+0x533 mi_syscall sys/sys/syscall_mi.h:183 [inline] syscall(ffff80002d4e4c70) at syscall+0x533 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xf39224a8400, count: -5 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x1e: addq $0x8,%rsp ddb{1}> trace x86_ipi_db(ffff800029cebff0) at x86_ipi_db+0x1e sys/arch/amd64/amd64/db_interface.c:393 x86_ipi_handler() at x86_ipi_handler+0xb7 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x27 end of kernel end trace frame: 0x7e44090e4f10, count: -3