kernel: protection fault trap, code=0 Stopped at done_flush+0x38: movl %eax,%dr6 ddb{0}> ddb{0}> set $lines = 0 ddb{0}> set $maxwidth = 0 ddb{0}> show panic the kernel did not panic ddb{0}> trace end trace frame: 0x0, count: -1 ddb{0}> show registers rdi 0x6c14 __ALIGN_SIZE+0x5c14 rsi 0xffff80003c3e8d98 rbp 0 rbx 0x756e6547 rdx 0x49656e69 rcx 0x6c65746e rax 0x100000001 r8 0 r9 0x10000 __ALIGN_SIZE+0xf000 r10 0 r11 0 r12 0 r13 0 r14 0 r15 0 rip 0xffffffff81f1820b done_flush+0x38 cs 0x8 rflags 0x10046 __ALIGN_SIZE+0xf046 rsp 0xffff80003c41cec8 ss 0x10 done_flush+0x38: movl %eax,%dr6 ddb{0}> show proc PROC (syz-executor) tid=140736 pid=4233 tcnt=2 stat=onproc flags process=10 proc=4000000 runpri=32, usrpri=82, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff8000fffee2b0,0xffffffff83a379f8 process=0xffff800036baa1d0 user=0xffff80003c418000, vmspace=0xfffffd805eab07d0 estcpu=36, cpticks=0, pctcpu=0.0, user=0, sys=0, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 4233 322640 96891 60928 2 0x10 syz-executor * 4233 140736 96891 60928 7 0x4000010 syz-executor 76164 175339 23483 0 2 0x10 syz-executor 76164 46812 23483 0 3 0x4000090 ttyout syz-executor 61105 328977 72703 0 2 0 syz-executor 61105 245018 72703 0 3 0x4000080 fsleep syz-executor 57204 60346 84336 0 3 0x80 fsleep syz-executor 57204 273710 84336 0 2 0x4000000 syz-executor 94365 24648 83499 0 2 0 syz-executor 94365 304564 83499 0 3 0x4000080 ttyin syz-executor 94365 404230 83499 0 2 0x4000000 syz-executor 71494 207926 65702 0 2 0 syz-executor 71494 244244 65702 0 3 0x4000080 kqsel syz-executor 71494 391349 65702 0 3 0x4000080 fsleep syz-executor 56862 184941 74491 0 2 0 syz-executor 56862 81675 74491 0 3 0x4000080 fsleep syz-executor 96891 29507 1504 0 3 0x82 nanoslp syz-executor 33148 335170 0 0 3 0x14200 acct acct 72703 369873 1504 0 3 0x82 nanoslp syz-executor 32117 215020 1 0 3 0x100083 ttyopn getty 84336 246385 1504 0 3 0x82 nanoslp syz-executor 83499 282369 1504 0 3 0x82 nanoslp syz-executor 23483 29406 1504 0 3 0x82 nanoslp syz-executor 99458 346807 1504 0 2 0x2 syz-executor 74491 463699 1504 0 3 0x82 nanoslp syz-executor 65702 79858 1504 0 3 0x82 nanoslp syz-executor 1504 289389 98520 0 3 0x82 kqread syz-executor 98520 88940 43662 0 3 0x10008a sigsusp ksh 43662 386944 90008 0 3 0x98 kqread sshd-session 90008 22823 45817 0 3 0x92 kqread sshd-session 45817 320938 1 0 3 0x88 kqread sshd 2835 120004 86380 74 3 0x1100092 bpf pflogd 86380 343007 1 0 3 0x80 sbwait pflogd 16818 502698 4643 73 3 0x1100090 kqread syslogd 4643 295489 1 0 3 0x100082 sbwait syslogd 20602 403054 1 0 3 0x100080 kqread resolvd 62820 22831 99545 77 3 0x100092 kqread dhcpleased 11684 400369 99545 77 3 0x100092 kqread dhcpleased 99545 136292 1 0 3 0x80 kqread dhcpleased 99044 144815 0 0 3 0x14200 bored smr 50188 494684 0 0 2 0x14200 zerothread 34916 40390 0 0 3 0x14200 aiodoned aiodoned 7738 345046 0 0 3 0x14200 syncer update 49742 375687 0 0 3 0x14200 cleaner cleaner 73251 503533 0 0 3 0x14200 reaper reaper 62955 430545 0 0 3 0x14200 pgdaemon pagedaemon 49207 307171 0 0 3 0x14200 bored viomb 29204 35551 0 0 3 0x40014200 acpi0 acpi0 41166 184103 0 0 7 0x40014200 idle1 76871 509756 0 0 3 0x14200 bored softnet1 44234 474617 0 0 3 0x14200 bored softnet0 35979 388493 0 0 3 0x14200 smrbar systqmp 94977 126480 0 0 3 0x14200 bored systq 4911 263385 0 0 3 0x14200 tmoslp softclockmp 81693 366906 0 0 3 0x40014200 tmoslp softclock 67570 143920 0 0 3 0x40014200 idle0 1 95209 0 0 3 0x82 wait init 0 0 -1 0 3 0x10010200 scheduler swapper ddb{0}> show all locks Process 4233 (syz-executor) thread 0xffff8000fffee018 (140736) Process 35979 (systqmp) thread 0xffff8000ffffe000 (388493) ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 11106 12161K 14851K 166960K 15056 0 pcb 17 18K 26K 166960K 671 0 rtable 203 12K 13K 166960K 855 0 pf 36 18K 21K 166960K 227 0 ifaddr 34 6K 8K 166960K 149 0 ifgroup 53 2K 3K 166960K 264 0 sysctl 4 1K 9K 166960K 22 0 counters 72 37K 38K 166960K 290 0 ioctlops 0 0K 4K 166960K 2031 0 iov 0 0K 24K 166960K 290 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1443 91K 91K 166960K 3332 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 5K 166960K 21 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 117 0 dirhash 12 2K 2K 166960K 66 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 17 61K 93K 166960K 2022 0 sigio 0 0K 0K 166960K 52 0 proc 73 115K 164K 166960K 840 0 subproc 72 4K 4K 166960K 109 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 372 0 in_multi 66 4K 7K 166960K 217 0 ether_multi 1 0K 0K 166960K 23 0 mrt 2 0K 0K 166960K 53 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 247 1102K 1102K 166960K 247 0 exec 0 0K 1K 166960K 720 0 fusefs mount 1 32K 32K 166960K 1 0 pfkey data 0 0K 0K 166960K 2 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 232 165K 184K 166960K 19803 0 UVM aobj 47 28K 28K 166960K 48 0 pinsyscall 42 84K 102K 166960K 3409 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 235 0 NDP 12 0K 2K 166960K 105 0 temp 78 9088K 9159K 166960K 121427 0 kqueue 16 22K 32K 166960K 407 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 26 0 0 1 0 1 1 0 8 0 rtpcb 120 171 0 168 1 0 1 1 0 8 0 rtentry 176 212 0 141 6 0 6 6 0 8 0 unpcb 144 1949 0 1928 18 14 4 6 0 8 2 syncache 336 16 0 16 6 5 1 1 0 8 1 tcpqe 32 3 0 3 2 1 1 1 0 8 1 tcpcb 736 523 0 517 6 5 1 4 0 8 0 arp 136 42 0 27 1 0 1 1 0 8 0 inpcb 328 2849 0 2838 28 21 7 12 0 8 5 nd6 152 42 0 26 2 1 1 2 0 8 0 pkpcb 40 26 0 25 6 5 1 1 0 8 0 kcovpl 48 12 0 4 1 0 1 1 0 8 0 mppekey 1024 1 0 1 1 1 0 1 0 8 0 ppxss 1192 83 0 81 3 2 1 1 0 8 0 pppxif 1576 11 0 11 5 4 1 1 0 8 1 pffrag 232 15 0 7 1 0 1 1 0 482 0 pffrnode 88 15 0 7 1 0 1 1 0 8 0 pffrent 40 21 0 13 1 0 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 pfrktable 1344 1 0 1 1 1 0 1 0 8 0 pfstitem 24 157 0 60 1 0 1 1 0 8 0 pfstkey 128 157 0 60 4 0 4 4 0 8 0 pfstate 448 157 0 60 11 0 11 11 0 8 0 pfrule 1360 24 0 19 2 1 1 2 0 8 0 rttmr 136 5 0 5 3 2 1 1 0 8 1 art_heap8 4096 5 0 0 5 0 5 5 0 8 0 art_heap4 256 942 0 645 33 5 28 30 0 8 5 art_table 40 947 0 645 5 0 5 5 0 8 0 art_node 32 210 0 146 1 0 1 1 0 8 0 sysvmsgpl 40 16 0 16 3 3 0 1 0 8 0 semupl 112 1 0 1 1 1 0 1 0 8 0 semapl 112 113 0 103 1 0 1 1 0 8 0 shmpl 112 32 0 1 1 0 1 1 0 8 0 dirhash 1024 55 0 38 3 0 3 3 0 8 0 dino2pl 256 5573 0 4113 93 0 93 93 0 8 0 ffsino 296 5573 0 4113 114 0 114 114 0 8 0 nchpl 144 8329 0 6608 64 0 64 64 0 8 0 rtmask 32 19 0 19 6 5 1 1 0 8 1 vnodes 216 5926 0 0 330 0 330 330 0 8 0 namei 1024 30173 0 30173 1 0 1 1 0 8 1 percpumem 16 160 0 109 1 0 1 1 0 8 0 vcpupl 3968 13 0 0 2 0 2 2 0 8 0 vmpool 848 13 0 0 2 0 2 2 0 8 0 kstatmem 264 166 0 138 6 3 3 3 0 8 1 acpiwqpl 32 1 0 1 1 0 1 1 1 8 1 scsiplug 72 8 0 8 6 5 1 1 0 8 1 scxspl 216 54833 0 54833 12 10 2 8 1 8 2 plimitpl 152 598 0 581 1 0 1 1 0 8 0 sigapl 424 2383 0 2335 9 0 9 9 0 8 2 knotepl 120 514 0 0 16 0 16 16 0 8 0 kqueuepl 224 658 0 640 5 3 2 3 0 8 0 pipepl 344 368 0 340 9 6 3 9 0 8 0 fdescpl 528 2340 0 2309 3 0 3 3 0 8 0 filepl 160 17254 0 17022 29 13 16 18 0 8 5 lockfpl 104 878 0 875 2 1 1 2 0 8 0 lockfspl 48 301 0 298 1 0 1 1 0 8 0 sessionpl 144 43 0 34 1 0 1 1 0 8 0 pgrppl 48 149 0 131 1 0 1 1 0 8 0 ucredpl 104 3027 0 3012 1 0 1 1 0 8 0 zombiepl 144 2335 0 2335 1 0 1 1 0 8 1 processpl 1232 2383 0 2335 6 0 6 6 0 8 0 procpl 664 5301 0 5244 8 0 8 8 0 8 2 sosppl 176 33 0 33 3 2 1 1 0 8 1 sockpl 752 5110 0 5074 51 40 11 18 0 8 6 mcl64k 65536 4 0 0 1 0 1 1 0 8 0 mcl16k 16384 3 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 3 0 0 1 0 1 1 0 8 0 mcl4k 4096 123 0 0 15 0 15 15 0 8 0 mcl2k2 2112 1 0 0 1 0 1 1 0 8 0 mcl2k 2048 23 0 0 3 0 3 3 0 8 0 mtagpl 96 3 0 0 1 0 1 1 0 8 0 mbufpl 256 1924 0 0 117 0 117 117 0 8 0 bufpl 280 21851 0 15722 439 1 438 439 0 8 0 anonpl 32 10772 0 0 87 0 87 87 0 246 0 amapchunkpl 152 69031 0 68502 52 23 29 37 0 158 4 amappl16 200 7912 0 7876 46 36 10 23 0 8 1 amappl15 192 6 0 6 2 2 0 1 0 8 0 amappl14 184 483 0 482 1 0 1 1 0 8 0 amappl13 176 171 0 159 1 0 1 1 0 8 0 amappl12 168 2676 0 2645 2 0 2 2 0 8 0 amappl11 160 40 0 40 1 1 0 1 0 8 0 amappl10 152 88 0 74 1 0 1 1 0 8 0 amappl9 144 264 0 264 1 1 0 1 0 8 0 amappl8 136 116 0 113 1 0 1 1 0 8 0 amappl7 128 205 0 189 1 0 1 1 0 8 0 amappl6 120 198 0 197 1 0 1 1 0 8 0 amappl5 112 143 0 132 1 0 1 1 0 8 0 amappl4 104 372 0 351 1 0 1 1 0 8 0 amappl3 96 14114 0 14004 4 0 4 4 0 8 0 amappl2 88 793 0 732 2 0 2 2 0 8 0 amappl1 80 23651 0 23045 26 9 17 17 0 8 1 amappl 88 18503 0 18344 5 0 5 5 0 92 0 uvmvnodes 80 183 0 0 4 0 4 4 0 8 0 dma32768 32768 34 0 34 2 2 0 1 0 8 0 dma8192 8192 3 0 3 2 2 0 1 0 8 0 dma4096 4096 1 0 1 1 1 0 1 0 8 0 dma2048 2048 1 0 1 1 1 0 1 0 8 0 dma1024 1024 1 0 0 1 0 1 1 0 8 0 dma512 512 1 0 1 1 1 0 1 0 8 0 dma256 256 7 0 7 2 2 0 1 0 8 0 dma128 128 256 0 256 3 3 0 1 0 8 0 dma64 64 7 0 7 2 2 0 1 0 8 0 dma32 32 7 0 7 1 1 0 1 0 8 0 dma16 16 19 0 18 1 0 1 1 0 8 0 aobjpl 72 47 0 1 1 0 1 1 0 8 0 uaddrrnd 24 2340 0 2309 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 2340 0 2309 1 0 1 1 0 8 0 vmmpekpl 168 21351 0 21304 4 1 3 3 0 8 0 vmmpepl 168 161895 0 159964 125 24 101 108 0 357 8 vmsppl 488 2339 0 2309 7 2 5 5 0 8 0 rwobjpl 80 45636 0 44469 39 7 32 33 0 8 0 pdppl 4096 4713 0 4631 149 63 86 88 0 8 4 pvpl 32 21311 0 0 174 2 172 172 0 265 0 pmappl 256 2352 0 2309 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 461 0 89 11 0 11 11 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace end trace frame: 0x0, count: -1 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp ddb{1}> trace x86_ipi_db(ffff8000299adff0) at x86_ipi_db+0x27 sys/arch/amd64/amd64/db_interface.c:394 x86_ipi_handler() at x86_ipi_handler+0xd9 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x27 acpicpu_idle() at acpicpu_idle+0x457 sys/dev/acpi/acpicpu_x86.c:1224 sched_idle(ffff8000299adff0) at sched_idle+0x391 sys/kern/kern_sched.c:191 end trace frame: 0x0, count: -5