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 0xffff80003546ac98 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 0xffff80002a2a8538 ss 0x10 done_flush+0x38: movl %eax,%dr6 ddb{0}> show proc PROC (syz-executor) tid=130570 pid=96269 tcnt=2 stat=onproc flags process=0 proc=4000000 runpri=50, usrpri=50, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff80003c416a98,0xffffffff83a379f8 process=0xffff8000ffff1350 user=0xffff80002a2a3000, vmspace=0xfffffd806c3f85d0 estcpu=36, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 96269 56456 8072 0 7 0 syz-executor *96269 130570 8072 0 7 0x4000000 syz-executor 33820 512186 94688 0 3 0x80 nanoslp syz-executor 33820 515513 94688 0 3 0x4000080 sysctllk syz-executor 33820 278946 94688 0 3 0x4000080 fsleep syz-executor 99632 319256 46402 0 3 0x82 sysctllk syz-executor 43057 245226 46402 0 3 0x82 sysctllk syz-executor 71845 53124 7711 0 3 0x82 sysctllk sshd-session 47656 461647 46402 0 3 0x82 sysctllk syz-executor 22583 95638 46402 0 3 0x82 sysctllk syz-executor 18506 115448 46402 0 3 0x82 sysctllk syz-executor 39380 488830 7711 0 3 0x82 sysctllk sshd-session 7991 461637 0 0 3 0x14200 acct acct 50814 372129 1 0 3 0x3000 suspend syz-executor 50814 325764 1 0 3 0x4081000 sysctllk syz-executor 23439 301559 1 0 3 0 vmmapbsy syz-executor 23439 513187 1 0 3 0x4000000 vmmapbsy syz-executor 23439 487925 1 0 3 0x4000000 fltagain2 syz-executor 23439 429422 1 0 3 0x4000080 pipeiolk syz-executor 23439 364679 1 0 3 0x4000000 fltagain2 syz-executor 58708 18018 0 0 3 0x14280 nfsidl nfsio 17500 99015 0 0 3 0x14280 nfsidl nfsio 50109 524288 0 0 3 0x14280 nfsidl nfsio 95051 215421 0 0 3 0x14280 nfsidl nfsio 52522 107384 0 0 3 0x14280 nfsidl nfsio 14469 89653 0 0 3 0x14280 nfsidl nfsio 74578 208467 0 0 3 0x14280 nfsidl nfsio 60236 49623 0 0 3 0x14280 nfsidl nfsio 56435 445095 0 0 3 0x14280 nfsidl nfsio 3925 453052 0 0 3 0x14280 nfsidl nfsio 14110 4671 0 0 3 0x14280 nfsidl nfsio 3618 358948 0 0 3 0x14280 nfsidl nfsio 18997 246058 0 0 3 0x14280 nfsidl nfsio 64574 459641 0 0 3 0x14280 nfsidl nfsio 6604 388165 0 0 3 0x14280 nfsidl nfsio 29311 76598 0 0 3 0x14280 nfsidl nfsio 61843 345867 0 0 3 0x14280 nfsidl nfsio 12457 336079 0 0 3 0x14280 nfsidl nfsio 23449 398525 0 0 3 0x14280 nfsidl nfsio 21383 137480 0 0 3 0x14280 nfsidl nfsio 98277 138381 60747 0 3 0x100082 sbwait arp 60747 54903 1 0 3 0x10008a sigsusp sh 22348 395750 46402 0 3 0x82 wait syz-executor 94688 126888 46402 0 3 0x82 nanoslp syz-executor 8072 44980 46402 0 3 0x82 nanoslp syz-executor 46402 132069 91492 0 3 0x82 kqread syz-executor 91492 495488 8655 0 3 0x10008a sigsusp ksh 8655 219527 7577 0 3 0x98 kqread sshd-session 7577 502312 7711 0 3 0x92 kqread sshd-session 3906 280520 1 0 3 0x100083 ttyopn getty 7711 286415 1 0 3 0x88 kqread sshd 32954 58515 8526 74 3 0x1100092 bpf pflogd 8526 342881 1 0 3 0x80 sbwait pflogd 16298 290409 57324 73 3 0x1100090 kqread syslogd 57324 279771 1 0 3 0x100082 sbwait syslogd 86919 188129 1 0 3 0x100080 kqread resolvd 97648 60842 98744 77 3 0x100092 kqread dhcpleased 16053 344373 98744 77 3 0x100092 kqread dhcpleased 98744 473560 1 0 3 0x80 kqread dhcpleased 76527 188495 0 0 3 0x14200 bored smr 76178 236457 0 0 3 0x14200 pgzero zerothread 47789 410203 0 0 3 0x14200 aiodoned aiodoned 52541 275210 0 0 3 0x14200 syncer update 66259 133558 0 0 3 0x14200 cleaner cleaner 85482 379078 0 0 3 0x14200 reaper reaper 80340 135051 0 0 3 0x14200 pgdaemon pagedaemon 88017 472995 0 0 3 0x14200 bored viomb 80703 484049 0 0 3 0x40014200 acpi0 acpi0 3417 475267 0 0 3 0x40014200 idle1 60381 450367 0 0 3 0x14200 bored softnet1 16453 86919 0 0 3 0x14200 bored softnet0 42226 19232 0 0 3 0x14200 bored systqmp 7220 295214 0 0 3 0x14200 bored systq 22527 196598 0 0 3 0x14200 tmoslp softclockmp 52492 465548 0 0 3 0x40014200 tmoslp softclock 26679 35704 0 0 3 0x40014200 idle0 1 403973 0 0 3 0x82 wait init 0 0 -1 0 3 0x10010200 scheduler swapper ddb{0}> show all locks Process 96269 (syz-executor) thread 0xffff80003c416800 (130570) exclusive rwlock vcpu r = 0 (0xffff80003546a9f0) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 rw_do_enter_write+0x419 sys/kern/kern_rwlock.c:320 #2 vm_run+0xa2 sys/arch/amd64/amd64/vmm_machdep.c:-1 #3 vmmioctl+0x337 sys/dev/vmm/vmm.c:254 #4 VOP_IOCTL+0xac sys/kern/vfs_vops.c:264 #5 vn_ioctl+0xf8 sys/kern/vfs_vnops.c:531 #6 sys_ioctl+0x674 sys/kern/sys_generic.c:-1 #7 syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] #7 syscall+0xbd4 sys/arch/amd64/amd64/trap.c:783 #8 Xsyscall+0x128 Process 23439 (syz-executor) thread 0xffff8000373a22c8 (513187) exclusive rrwlock inode r = 0 (0xfffffd806a43e8e0) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 rw_do_enter_write+0x419 sys/kern/kern_rwlock.c:320 #2 rrw_enter+0xc6 sys/kern/kern_rwlock.c:621 #3 VOP_LOCK+0xbd sys/kern/vfs_vops.c:527 #4 vn_lock+0xa4 sys/kern/vfs_vnops.c:570 #5 vn_write+0x18f sys/kern/vfs_vnops.c:405 #6 dofilewritev+0x2bd sys/kern/sys_generic.c:384 #7 sys_write+0xa2 sys/kern/sys_generic.c:300 #8 syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] #8 syscall+0xbd4 sys/arch/amd64/amd64/trap.c:783 #9 Xsyscall+0x128 Process 23439 (syz-executor) thread 0xffff8000fffef240 (364679) exclusive rwlock sysctllk r = 0 (0xffffffff838dc208) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 rw_do_enter_write+0x419 sys/kern/kern_rwlock.c:320 #2 sysctl_vslock+0x45 sys/kern/kern_sysctl.c:192 #3 kern_sysctl_dirs+0x243 sys/kern/kern_sysctl.c:441 #4 kern_sysctl+0x139 sys/kern/kern_sysctl.c:734 #5 sys_sysctl+0x3e5 sys/kern/kern_sysctl.c:-1 #6 syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] #6 syscall+0xbd4 sys/arch/amd64/amd64/trap.c:783 #7 Xsyscall+0x128 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 11100 12190K 13109K 166960K 13408 0 pcb 20 15K 16K 166960K 235 0 rtable 167 7K 8K 166960K 492 0 pf 36 18K 81K 166960K 144 0 ifaddr 34 5K 8K 166960K 105 0 ifgroup 56 2K 3K 166960K 174 0 sysctl 3 1K 9K 166960K 11 0 counters 70 37K 38K 166960K 184 0 ioctlops 0 0K 4K 166960K 1766 0 iov 0 0K 16K 166960K 37 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1316 83K 84K 166960K 2209 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 3 5K 9K 166960K 8 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 53 0 dirhash 12 2K 2K 166960K 21 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 17 46K 89K 166960K 1045 0 sigio 0 0K 0K 166960K 20 0 proc 72 115K 180K 166960K 663 0 subproc 54 3K 4K 166960K 82 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 113 0 in_multi 59 4K 6K 166960K 145 0 ether_multi 1 0K 0K 166960K 13 0 mrt 1 0K 0K 166960K 36 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 223 996K 996K 166960K 223 0 exec 0 0K 1K 166960K 496 0 fusefs mount 1 32K 32K 166960K 1 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 252 139K 177K 166960K 12038 0 UVM aobj 10 10K 10K 166960K 10 0 pinsyscall 47 94K 104K 166960K 2219 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 117 0 NDP 12 0K 1K 166960K 69 0 temp 59 9084K 9179K 166960K 48117 0 kqueue 15 24K 28K 166960K 201 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 120 135 0 131 1 0 1 1 0 8 0 rtentry 176 144 0 80 5 0 5 5 0 8 0 unpcb 144 717 0 695 10 9 1 6 0 8 0 syncache 336 5 0 5 3 3 0 1 0 8 0 tcpcb 736 471 0 463 17 16 1 7 0 8 0 arp 136 20 0 9 1 0 1 1 0 8 0 inpcb 328 1427 0 1412 21 14 7 7 0 8 5 nd6 152 26 0 12 1 0 1 1 0 8 0 pkpcb 40 7 0 7 4 4 0 1 0 8 0 kcovpl 48 9 0 3 1 0 1 1 0 8 0 ppxss 1192 43 0 42 3 2 1 1 0 8 0 pppxif 1576 9 0 9 4 4 0 1 0 8 0 pffrag 232 12 0 4 1 0 1 1 0 482 0 pffrnode 88 12 0 4 1 0 1 1 0 8 0 pffrent 40 21 0 13 1 0 1 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 pfstitem 24 70 0 35 1 0 1 1 0 8 0 pfstkey 128 70 0 35 2 0 2 2 0 8 0 pfstate 448 70 0 35 6 1 5 6 0 8 0 pfrule 1360 22 0 17 2 1 1 2 0 8 0 rttmr 136 4 0 4 3 3 0 1 0 8 0 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 643 0 368 29 8 21 28 0 8 0 art_table 40 645 0 368 5 0 5 5 0 8 0 art_node 32 144 0 87 1 0 1 1 0 8 0 sysvmsgpl 40 17 0 12 1 0 1 1 0 8 0 semupl 112 1 0 1 1 1 0 1 0 8 0 semapl 112 50 0 40 1 0 1 1 0 8 0 shmpl 112 3 0 0 1 0 1 1 0 8 0 dirhash 1024 23 0 6 3 0 3 3 0 8 0 dino2pl 256 3531 0 2072 93 0 93 93 0 8 0 ffsino 296 3531 0 2072 114 0 114 114 0 8 0 nchpl 144 5062 0 3349 64 0 64 64 0 8 0 rtmask 32 3 0 3 2 2 0 1 0 8 0 vnodes 216 3937 0 0 219 0 219 219 0 8 0 namei 1024 16875 0 16875 2 1 1 2 0 8 1 percpumem 16 107 0 57 1 0 1 1 0 8 0 vcpupl 3968 4 0 0 1 0 1 1 0 8 0 vmpool 848 4 0 0 1 0 1 1 0 8 0 kstatmem 264 108 0 80 5 3 2 3 0 8 0 scsiplug 72 1 0 1 1 1 0 1 0 8 0 scxspl 216 27470 0 27470 11 10 1 8 1 8 1 plimitpl 152 238 0 218 1 0 1 1 0 8 0 sigapl 424 1379 0 1309 8 0 8 8 0 8 0 knotepl 120 532 0 0 17 0 17 17 0 8 0 kqueuepl 224 314 0 303 2 1 1 2 0 8 0 pipepl 344 246 0 213 7 3 4 6 0 8 0 fdescpl 528 1341 0 1308 3 0 3 3 0 8 0 filepl 160 8549 0 8332 28 16 12 18 0 8 2 lockfpl 104 658 0 656 2 1 1 2 0 8 0 lockfspl 48 185 0 183 1 0 1 1 0 8 0 sessionpl 144 25 0 14 1 0 1 1 0 8 0 pgrppl 48 120 0 98 1 0 1 1 0 8 0 ucredpl 104 1639 0 1626 1 0 1 1 0 8 0 zombiepl 144 1979 0 1977 2 1 1 1 0 8 0 processpl 1232 1379 0 1309 6 0 6 6 0 8 0 procpl 664 3182 0 3104 8 0 8 8 0 8 0 sosppl 176 12 0 12 3 3 0 1 0 8 0 sockpl 752 2309 0 2268 41 30 11 24 0 8 6 mcl64k 65536 8 0 0 1 0 1 1 0 8 0 mcl16k 16384 2 0 0 1 0 1 1 0 8 0 mcl12k 12288 2 0 0 1 0 1 1 0 8 0 mcl8k 8192 5 0 0 1 0 1 1 0 8 0 mcl4k 4096 119 0 0 15 0 15 15 0 8 0 mcl2k 2048 32 0 0 4 1 3 4 0 8 0 mtagpl 96 9 0 0 1 0 1 1 0 8 0 mbufpl 256 1306 0 0 82 0 82 82 0 8 0 bufpl 280 10509 0 4380 438 0 438 438 0 8 0 anonpl 32 10162 0 0 82 0 82 82 0 246 0 amapchunkpl 152 40519 0 39962 39 12 27 32 0 158 0 amappl16 200 4732 0 4649 31 20 11 17 0 8 0 amappl15 192 7 0 6 1 0 1 1 0 8 0 amappl14 184 438 0 436 1 0 1 1 0 8 0 amappl13 176 139 0 124 1 0 1 1 0 8 0 amappl12 168 1592 0 1567 2 0 2 2 0 8 0 amappl11 160 6 0 6 1 1 0 1 0 8 0 amappl10 152 64 0 50 1 0 1 1 0 8 0 amappl9 144 314 0 314 1 1 0 1 0 8 0 amappl8 136 103 0 99 1 0 1 1 0 8 0 amappl7 128 148 0 132 1 0 1 1 0 8 0 amappl6 120 167 0 164 1 0 1 1 0 8 0 amappl5 112 95 0 83 1 0 1 1 0 8 0 amappl4 104 311 0 290 1 0 1 1 0 8 0 amappl3 96 8018 0 7913 4 0 4 4 0 8 0 amappl2 88 530 0 458 2 0 2 2 0 8 0 amappl1 80 13235 0 12547 15 0 15 15 0 8 0 amappl 88 11201 0 11035 6 1 5 5 0 92 0 uvmvnodes 80 141 0 0 3 0 3 3 0 8 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 dma512 512 1 0 1 1 1 0 1 0 8 0 dma256 256 6 0 6 1 1 0 1 0 8 0 dma128 128 258 0 258 2 2 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 9 0 0 1 0 1 1 0 8 0 uaddrrnd 24 1341 0 1308 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1341 0 1308 1 0 1 1 0 8 0 vmmpekpl 168 12697 0 12632 4 0 4 4 0 8 0 vmmpepl 168 92111 0 90094 108 10 98 102 0 357 0 vmsppl 488 1340 0 1308 5 0 5 5 0 8 0 rwobjpl 80 27425 0 26158 35 5 30 32 0 8 0 pdppl 4096 2697 0 2620 104 27 77 83 0 8 0 pvpl 32 18281 0 0 149 1 148 148 0 265 0 pmappl 256 1344 0 1308 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 372 0 61 11 1 10 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 end of kernel end trace frame: 0x7e77a544a7d0, count: -3