uvm_fault(0xffffffff82b29970, 0xffff8000206f0834, 0, 2) -> d kernel: page fault trap, code=0 Stopped at memset+0x45: repe stosb %es:(%rdi) TID PID UID PRFLAGS PFLAGS CPU COMMAND *267501 22129 0 0x2 0x1 1K syz-executor.5 314264 75801 0 0x2 0x480 0 syz-executor.3 memset() at memset+0x45 ffs_write(ffff80002c94d650) at ffs_write+0x924 VOP_WRITE(fffffd807512fdd0,ffff80002c94d708,3,fffffd807f7d84e0) at VOP_WRITE+0xbf sys/kern/vfs_vops.c:245 ktrwriteraw(ffff80002c92b7a8,fffffd807512fdd0,fffffd807f7d84e0,ffff80002c94d7d8,ffff80002c94d7b0) at ktrwriteraw+0x15f sys/kern/kern_ktrace.c:666 ktrsysret(ffff80002c92b7a8,89,0,ffff80002c94d8f0) at ktrsysret+0x17e ktrwrite2 sys/kern/kern_ktrace.c:631 [inline] ktrsysret(ffff80002c92b7a8,89,0,ffff80002c94d8f0) at ktrsysret+0x17e sys/kern/kern_ktrace.c:213 syscall(ffff80002c94d960) at syscall+0x5d5 mi_syscall_return sys/sys/syscall_mi.h:132 [inline] syscall(ffff80002c94d960) at syscall+0x5d5 sys/arch/amd64/amd64/trap.c:607 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7fffffab40, count: 8 https://www.openbsd.org/ddb.html describes the minimum info required in bug reports. Insufficient info makes it difficult to find and fix bugs. ddb{1}> ddb{1}> set $lines = 0 ddb{1}> set $maxwidth = 0 ddb{1}> show panic *cpu1: uvm_fault(0xffffffff82b29970, 0xffff8000206f0834, 0, 2) -> d ddb{1}> trace memset() at memset+0x45 ffs_write(ffff80002c94d650) at ffs_write+0x924 VOP_WRITE(fffffd807512fdd0,ffff80002c94d708,3,fffffd807f7d84e0) at VOP_WRITE+0xbf sys/kern/vfs_vops.c:245 ktrwriteraw(ffff80002c92b7a8,fffffd807512fdd0,fffffd807f7d84e0,ffff80002c94d7d8,ffff80002c94d7b0) at ktrwriteraw+0x15f sys/kern/kern_ktrace.c:666 ktrsysret(ffff80002c92b7a8,89,0,ffff80002c94d8f0) at ktrsysret+0x17e ktrwrite2 sys/kern/kern_ktrace.c:631 [inline] ktrsysret(ffff80002c92b7a8,89,0,ffff80002c94d8f0) at ktrsysret+0x17e sys/kern/kern_ktrace.c:213 syscall(ffff80002c94d960) at syscall+0x5d5 mi_syscall_return sys/sys/syscall_mi.h:132 [inline] syscall(ffff80002c94d960) at syscall+0x5d5 sys/arch/amd64/amd64/trap.c:607 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7fffffab40, count: -7 ddb{1}> show registers rdi 0xffff8000206f0834 rsi 0 rbp 0xffff80002c94d570 rbx 0x1 rdx 0x4 rcx 0x4 rax 0 r8 0x7c8 r9 0xffff80002c94d4c8 r10 0x2a2b6e9365219b7a r11 0xffff8000206f0834 r12 0x1834 __ALIGN_SIZE+0x834 r13 0xfffffd8065286248 r14 0x2000 __ALIGN_SIZE+0x1000 r15 0xfffffd8065286230 rip 0xffffffff81633ba5 memset+0x45 cs 0x8 rflags 0x10202 __ALIGN_SIZE+0xf202 rsp 0xffff80002c94d378 ss 0x10 memset+0x45: repe stosb %es:(%rdi) ddb{1}> show proc PROC (syz-executor.5) pid=267501 stat=onproc flags process=2 proc=1 pri=17, usrpri=84, nice=20 forw=0xffffffffffffffff, list=0xffff8000ffff3508,0xffff8000ffff2018 process=0xffff80002b512dd0 user=0xffff80002c948000, vmspace=0xfffffd806edbdcf8 estcpu=36, cpticks=0, pctcpu=0.1 user=0, sys=0, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 95024 296775 66114 0 2 0 syz-executor.7 95024 306497 66114 0 2 0x4000000 syz-executor.7 6186 279718 38050 0 2 0x480 syz-executor.6 6186 221861 38050 0 3 0x4000080 fsleep syz-executor.6 30312 405045 43720 0 2 0x480 syz-executor.0 30312 338341 43720 0 3 0x4000080 fsleep syz-executor.0 31880 77601 75801 0 2 0x480 syz-executor.3 31880 436942 75801 0 3 0x4000080 ttyin syz-executor.3 31880 287867 75801 0 3 0x4000080 fsleep syz-executor.3 31880 264710 75801 0 2 0x4000000 syz-executor.3 31880 461041 75801 0 2 0x4000000 syz-executor.3 31880 112525 75801 0 2 0x4000000 syz-executor.3 43720 153453 66750 0 3 0x82 nanoslp syz-executor.0 55002 463594 1 0 3 0x100083 ttyin getty 87344 26498 66750 0 3 0x82 nanoslp syz-executor.1 *22129 267501 66750 0 7 0x3 syz-executor.5 19330 98374 0 0 3 0x14200 acct acct 74754 225588 0 0 3 0x14280 nfsidl nfsio 48549 182028 0 0 3 0x14280 nfsidl nfsio 8789 481688 0 0 3 0x14280 nfsidl nfsio 12056 235101 0 0 3 0x14280 nfsidl nfsio 99766 42420 0 0 3 0x14280 nfsidl nfsio 45753 259744 0 0 3 0x14280 nfsidl nfsio 66689 239466 0 0 3 0x14280 nfsidl nfsio 59679 272611 0 0 3 0x14280 nfsidl nfsio 62113 155764 0 0 3 0x14280 nfsidl nfsio 39860 502386 0 0 3 0x14280 nfsidl nfsio 63457 159393 0 0 3 0x14280 nfsidl nfsio 41850 92027 0 0 3 0x14280 nfsidl nfsio 62931 502745 0 0 3 0x14280 nfsidl nfsio 31219 149230 0 0 3 0x14280 nfsidl nfsio 92178 117496 0 0 3 0x14280 nfsidl nfsio 37786 427488 0 0 3 0x14280 nfsidl nfsio 55736 112379 0 0 3 0x14280 nfsidl nfsio 43398 477183 0 0 3 0x14280 nfsidl nfsio 90365 15037 0 0 3 0x14280 nfsidl nfsio 90352 159286 0 0 3 0x14280 nfsidl nfsio 19212 445563 0 0 3 0x14200 bored sosplice 66114 275672 66750 0 3 0x82 nanoslp syz-executor.7 38050 78455 66750 0 2 0x482 syz-executor.6 95165 404803 66750 0 2 0x2 syz-executor.4 75801 314264 66750 0 7 0x482 syz-executor.3 70040 69873 66750 0 2 0x2 syz-executor.2 66750 459401 77540 0 3 0x82 thrsleep syz-fuzzer 66750 129469 77540 0 3 0x4000082 nanoslp syz-fuzzer 66750 29212 77540 0 3 0x4000082 thrsleep syz-fuzzer 66750 125373 77540 0 3 0x4000082 thrsleep syz-fuzzer 66750 158112 77540 0 3 0x4000082 thrsleep syz-fuzzer 66750 290107 77540 0 2 0x4000002 syz-fuzzer 66750 252394 77540 0 2 0x4000002 syz-fuzzer 66750 67102 77540 0 3 0x4000082 thrsleep syz-fuzzer 66750 5380 77540 0 3 0x4000082 thrsleep syz-fuzzer 77540 523156 76704 0 3 0x10008a sigsusp ksh 76704 6314 76688 0 3 0x9a poll sshd 76688 346402 1 0 3 0x88 poll sshd 85469 38839 95142 74 3 0x100092 bpf pflogd 95142 41832 1 0 3 0x80 netio pflogd 7862 199969 87997 73 2 0x100090 syslogd 87997 424967 1 0 3 0x100082 netio syslogd 44408 82881 1 0 3 0x100080 kqread resolvd 66287 48162 14527 77 3 0x100092 kqread dhcpleased 30642 364457 14527 77 3 0x100092 kqread dhcpleased 14527 459450 1 0 3 0x80 kqread dhcpleased 37108 492284 0 0 3 0x14200 bored smr 73201 419232 0 0 2 0x14200 zerothread 49512 146930 0 0 3 0x14200 aiodoned aiodoned 53661 8676 0 0 3 0x14200 syncer update 83915 422751 0 0 3 0x14200 cleaner cleaner 93358 48573 0 0 3 0x14200 reaper reaper 38012 118263 0 0 3 0x14200 pgdaemon pagedaemon 57941 412570 0 0 3 0x14200 bored viomb 45005 125764 0 0 3 0x40014200 acpi0 acpi0 97847 251395 0 0 3 0x40014200 idle1 56855 371464 0 0 3 0x14200 bored softnet 66824 96061 0 0 3 0x14200 bored systqmp 48150 338558 0 0 3 0x14200 bored systq 16727 266615 0 0 3 0x40014200 bored softclock 96119 183383 0 0 3 0x40014200 idle0 1 19153 0 0 3 0x80082 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 22129 (syz-executor.5) thread 0xffff80002c92b7a8 (267501) exclusive rrwlock inode r = 0 (0xfffffd80652862c8) #0 witness_lock+0x44d #1 rw_enter+0x3e1 sys/kern/kern_rwlock.c:310 #2 rrw_enter+0x8b sys/kern/kern_rwlock.c:461 #3 VOP_LOCK+0x87 sys/kern/vfs_vops.c:534 #4 vn_lock+0x84 sys/kern/vfs_vnops.c:579 #5 vget+0x1d3 sys/kern/vfs_subr.c:677 #6 ktrwriteraw+0x130 sys/kern/kern_ktrace.c:663 #7 ktrsysret+0x17e ktrwrite2 sys/kern/kern_ktrace.c:631 [inline] #7 ktrsysret+0x17e sys/kern/kern_ktrace.c:213 #8 syscall+0x5d5 mi_syscall_return sys/sys/syscall_mi.h:132 [inline] #8 syscall+0x5d5 sys/arch/amd64/amd64/trap.c:607 #9 Xsyscall+0x128 exclusive kernel_lock &kernel_lock r = 1 (0xffffffff82aa6758) #0 witness_lock+0x44d #1 syscall+0x5c2 mi_syscall_return sys/sys/syscall_mi.h:130 [inline] #1 syscall+0x5c2 sys/arch/amd64/amd64/trap.c:607 #2 Xsyscall+0x128 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10239 6811K 7211K 78643K 28059 0 pcb 13 20K 22K 78643K 578 0 rtable 205 11K 14K 78643K 2286 0 ifaddr 88 18K 20K 78643K 807 0 sysctl 2 0K 0K 78643K 2 0 counters 54 35K 35K 78643K 142 0 ioctlops 0 0K 4K 78643K 4053 0 iov 0 0K 16K 78643K 629 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 5 0 vnodes 1395 87K 88K 78643K 6234 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 46 0 VM map 2 1K 1K 78643K 2 0 sem 16 1K 2K 78643K 36 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12598 0 file desc 14 49K 89K 78643K 4087 0 sigio 0 0K 0K 78643K 82 0 proc 69 87K 124K 78643K 782 0 subproc 104 6K 6K 78643K 156 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 239 0 in_multi 73 4K 6K 78643K 285 0 ether_multi 1 0K 0K 78643K 74 0 mrt 1 0K 0K 78643K 32 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 205 917K 917K 78643K 205 0 exec 0 0K 2K 78643K 1119 0 tdb 3 0K 0K 78643K 3 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 420 487K 488K 78643K 54725 0 UVM aobj 134 9K 9K 78643K 140 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 223 0 NDP 12 0K 1K 78643K 82 0 temp 138 4715K 4787K 78643K 30834 0 kqueue 11 14K 23K 78643K 310 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 plcache 128 22 0 0 1 0 1 1 0 8 0 rtpcb 120 462 0 459 10 9 1 4 0 8 0 rtentry 112 205 0 125 4 0 4 4 0 8 0 unpcb 136 2753 0 2738 28 27 1 7 0 8 0 syncache 296 12 0 12 5 5 0 1 0 8 0 tcpqe 32 13 0 13 4 4 0 1 0 8 0 tcpcb 736 1528 0 1518 73 72 1 13 0 8 0 arp 120 35 0 21 1 0 1 1 0 8 0 inpcb 304 4446 0 4435 79 75 4 17 0 8 3 rttmr 72 9 0 9 3 2 1 1 0 8 1 nd6 48 41 0 22 1 0 1 1 0 8 0 pkpcb 40 8 0 8 1 1 0 1 0 8 0 kcovpl 48 12 0 4 1 0 1 1 0 8 0 ppxss 1248 15 0 15 5 5 0 1 0 8 0 pfstscr 40 9 0 9 4 4 0 1 0 8 0 pffrag 232 78 0 77 2 1 1 1 0 482 0 pffrnode 88 77 0 76 2 1 1 1 0 8 0 pffrent 40 198 0 197 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 pfrktable 1344 749 0 738 8 7 1 2 0 8 0 pftag 88 13 0 9 1 0 1 1 0 8 0 pfstitem 24 26 0 24 1 0 1 1 0 8 0 pfstkey 112 39 0 37 1 0 1 1 0 8 0 pfstate 320 32 0 30 2 1 1 2 0 8 0 pfrule 1360 1572 0 1489 10 2 8 8 0 8 1 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 858 0 477 33 6 27 30 0 8 0 art_table 32 859 0 477 4 0 4 4 0 8 0 art_node 16 204 0 132 1 0 1 1 0 8 0 sysvmsgpl 40 22 0 14 1 0 1 1 0 8 0 semupl 112 2 0 2 2 2 0 1 0 8 0 semapl 112 24 0 10 1 0 1 1 0 8 0 shmpl 112 137 0 9 4 0 4 4 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 6883 0 5444 91 0 91 91 0 8 0 ffsino 272 6883 0 5444 97 0 97 97 0 8 0 nchpl 144 12249 0 10615 63 0 63 63 0 8 0 uvmvnodes 80 5926 0 0 121 0 121 121 0 8 0 vnodes 224 5926 0 0 349 0 349 349 0 8 0 namei 1024 46782 0 46782 3 2 1 2 0 8 1 percpumem 16 83 0 44 1 0 1 1 0 8 0 vcpupl 2048 63 0 0 8 0 8 8 0 8 0 vmpool 560 68 0 5 5 0 5 5 0 8 0 pfiaddrpl 120 227 0 212 1 0 1 1 0 8 0 scsiplug 72 5 0 5 2 2 0 1 0 8 0 scxspl 216 35245 0 35245 20 19 1 8 0 8 1 plimitpl 152 606 0 591 1 0 1 1 0 8 0 sigapl 424 4403 0 4340 8 0 8 8 0 8 0 futexpl 64 38274 0 38271 1 0 1 1 0 8 0 knotepl 112 119 0 0 3 0 3 3 0 8 0 kqueuepl 216 908 0 901 21 20 1 5 0 8 0 pipepl 336 791 0 763 19 16 3 8 0 8 0 fdescpl 496 4367 0 4340 5 0 5 5 0 8 0 filepl 152 33186 0 32926 50 38 12 22 0 8 1 lockfpl 104 857 0 854 4 3 1 2 0 8 0 lockfspl 48 225 0 222 1 0 1 1 0 8 0 sessionpl 144 29 0 12 1 0 1 1 0 8 0 pgrppl 48 41 0 24 1 0 1 1 0 8 0 ucredpl 96 4367 0 4353 1 0 1 1 0 8 0 zombiepl 144 4340 0 4339 1 0 1 1 0 8 0 processpl 1064 4403 0 4339 5 0 5 5 0 8 0 procpl 672 12586 0 12506 13 5 8 9 0 8 0 srpgc 96 8 0 8 3 2 1 1 0 8 1 sosppl 168 32 0 32 6 6 0 1 0 8 0 sockpl 480 7675 0 7645 214 207 7 30 0 8 3 mcl64k 65536 18 0 0 3 0 3 3 0 8 0 mcl16k 16384 14 0 0 2 0 2 2 0 8 0 mcl12k 12288 25 0 0 2 0 2 2 0 8 0 mcl9k 9216 6 0 0 1 0 1 1 0 8 0 mcl8k 8192 17 0 0 3 0 3 3 0 8 0 mcl4k 4096 17 0 0 3 0 3 3 0 8 0 mcl2k2 2112 7 0 0 1 0 1 1 0 8 0 mcl2k 2048 229 0 0 20 1 19 20 0 8 0 mtagpl 96 1609 0 0 38 0 38 38 0 8 0 mbufpl 256 4087 0 0 255 0 255 255 0 8 0 bufpl 288 9673 0 3337 453 0 453 453 0 8 0 anonpl 24 1219002 0 1202112 205 59 146 160 0 186 15 amapchunkpl 152 147342 0 146520 91 47 44 51 0 158 8 amappl16 200 12025 0 11378 97 53 44 53 0 8 8 amappl15 192 608 0 603 1 0 1 1 0 8 0 amappl14 184 524 0 520 1 0 1 1 0 8 0 amappl13 176 1089 0 1084 1 0 1 1 0 8 0 amappl12 168 21 0 17 1 0 1 1 0 8 0 amappl11 160 245 0 227 1 0 1 1 0 8 0 amappl10 152 1328 0 1318 1 0 1 1 0 8 0 amappl9 144 963 0 959 1 0 1 1 0 8 0 amappl8 136 1222 0 1146 3 0 3 3 0 8 0 amappl7 128 617 0 605 1 0 1 1 0 8 0 amappl6 120 705 0 679 2 1 1 2 0 8 0 amappl5 112 4591 0 4570 1 0 1 1 0 8 0 amappl4 104 1702 0 1668 2 1 1 2 0 8 0 amappl3 96 822 0 809 1 0 1 1 0 8 0 amappl2 88 1766 0 1719 3 1 2 3 0 8 0 amappl1 80 81988 0 81436 24 11 13 19 0 8 0 amappl 88 54053 0 53777 9 1 8 8 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 72 139 0 6 3 0 3 3 0 8 0 uaddrrnd 24 4435 0 4345 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 4435 0 4345 1 0 1 1 0 8 0 vmmpekpl 168 37402 0 37333 4 0 4 4 0 8 0 vmmpepl 168 401217 0 398634 206 53 153 153 0 357 26 vmsppl 368 4434 0 4345 9 0 9 9 0 8 0 rwobjpl 56 105136 0 97414 117 5 112 114 0 8 0 pdppl 4096 8877 0 8753 270 138 132 132 0 8 8 pvpl 32 2089161 0 2068200 393 155 238 253 0 265 29 pmappl 248 4434 0 4345 6 0 6 6 0 8 0 extentpl 40 57 0 38 1 0 1 1 0 8 0 phpool 112 1359 0 239 33 0 33 33 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp x86_ipi_db(ffffffff828daff0) at x86_ipi_db+0x1a 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+0x23 __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0xb sys/dev/kcov.c:144 __mp_acquire_count(ffffffff82aa6550,1) at __mp_acquire_count+0x48 sys/kern/kern_lock.c:227 mi_switch() at mi_switch+0x3d3 sys/kern/sched_bsd.c:416 sleep_finish(ffff8000260a2520,1) at sleep_finish+0x1b2 sys/kern/kern_synch.c:433 tsleep(ffffffff82a8c080,120,ffffffff825527ef,2) at tsleep+0x12c sys/kern/kern_synch.c:158 sys_nanosleep(ffff8000211437a8,ffff8000260a2640,ffff8000260a26a0) at sys_nanosleep+0x1f5 sys/kern/kern_time.c:299 syscall(ffff8000260a2710) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff8000260a2710) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffd5c90, count: 4 ddb{0}> trace x86_ipi_db(ffffffff828daff0) at x86_ipi_db+0x1a 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+0x23 __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0xb sys/dev/kcov.c:144 __mp_acquire_count(ffffffff82aa6550,1) at __mp_acquire_count+0x48 sys/kern/kern_lock.c:227 mi_switch() at mi_switch+0x3d3 sys/kern/sched_bsd.c:416 sleep_finish(ffff8000260a2520,1) at sleep_finish+0x1b2 sys/kern/kern_synch.c:433 tsleep(ffffffff82a8c080,120,ffffffff825527ef,2) at tsleep+0x12c sys/kern/kern_synch.c:158 sys_nanosleep(ffff8000211437a8,ffff8000260a2640,ffff8000260a26a0) at sys_nanosleep+0x1f5 sys/kern/kern_time.c:299 syscall(ffff8000260a2710) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff8000260a2710) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffd5c90, count: -11 ddb{0}> machine ddbcpu 1 Stopped at memset+0x45: repe stosb %es:(%rdi) memset() at memset+0x45 ffs_write(ffff80002c94d650) at ffs_write+0x924 VOP_WRITE(fffffd807512fdd0,ffff80002c94d708,3,fffffd807f7d84e0) at VOP_WRITE+0xbf sys/kern/vfs_vops.c:245 ktrwriteraw(ffff80002c92b7a8,fffffd807512fdd0,fffffd807f7d84e0,ffff80002c94d7d8,ffff80002c94d7b0) at ktrwriteraw+0x15f sys/kern/kern_ktrace.c:666 ktrsysret(ffff80002c92b7a8,89,0,ffff80002c94d8f0) at ktrsysret+0x17e ktrwrite2 sys/kern/kern_ktrace.c:631 [inline] ktrsysret(ffff80002c92b7a8,89,0,ffff80002c94d8f0) at ktrsysret+0x17e sys/kern/kern_ktrace.c:213 syscall(ffff80002c94d960) at syscall+0x5d5 mi_syscall_return sys/sys/syscall_mi.h:132 [inline] syscall(ffff80002c94d960) at syscall+0x5d5 sys/arch/amd64/amd64/trap.c:607 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7fffffab40, count: 8 ddb{1}> trace memset() at memset+0x45 ffs_write(ffff80002c94d650) at ffs_write+0x924 VOP_WRITE(fffffd807512fdd0,ffff80002c94d708,3,fffffd807f7d84e0) at VOP_WRITE+0xbf sys/kern/vfs_vops.c:245 ktrwriteraw(ffff80002c92b7a8,fffffd807512fdd0,fffffd807f7d84e0,ffff80002c94d7d8,ffff80002c94d7b0) at ktrwriteraw+0x15f sys/kern/kern_ktrace.c:666 ktrsysret(ffff80002c92b7a8,89,0,ffff80002c94d8f0) at ktrsysret+0x17e ktrwrite2 sys/kern/kern_ktrace.c:631 [inline] ktrsysret(ffff80002c92b7a8,89,0,ffff80002c94d8f0) at ktrsysret+0x17e sys/kern/kern_ktrace.c:213 syscall(ffff80002c94d960) at syscall+0x5d5 mi_syscall_return sys/sys/syscall_mi.h:132 [inline] syscall(ffff80002c94d960) at syscall+0x5d5 sys/arch/amd64/amd64/trap.c:607 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7fffffab40, count: -7