uvm_fault(0xffffffff82999dc0, 0xffff800019fa1200, 0, 1) -> d kernel: page fault trap, code=0 Stopped at memcpy+0x15: repe movsq (%rsi),%es:(%rdi) TID PID UID PRFLAGS PFLAGS CPU COMMAND *130774 35697 0 0 0x4000000 0 syz-executor.4 memcpy() at memcpy+0x15 ffs_inode_alloc(fffffd805de54f08,1f84,fffffd807f7d88a0,ffff800024907158) at ffs_inode_alloc+0x1be sys/ufs/ffs/ffs_alloc.c:394 ufs_makeinode(1f84,fffffd8067dc0860,ffff800024907370,ffff8000249073a0) at ufs_makeinode+0xae sys/ufs/ufs/ufs_vnops.c:1830 ufs_mknod(ffff800024907210) at ufs_mknod+0x4e sys/ufs/ufs/ufs_vnops.c:172 VOP_MKNOD(fffffd8067dc0860,ffff800024907370,ffff8000249073a0,ffff8000249072a0) at VOP_MKNOD+0xbf sys/kern/vfs_vops.c:121 domknodat(ffff80002166d260,ffffff9c,20000040,de761f86,0) at domknodat+0x326 sys/kern/vfs_syscalls.c:1630 syscall(ffff800024907540) at syscall+0x44e sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x400ef1a6d90, count: 7 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> ddb> set $lines = 0 ddb> set $maxwidth = 0 ddb> show panic *cpu0: uvm_fault(0xffffffff82999dc0, 0xffff800019fa1200, 0, 1) -> d ddb> trace memcpy() at memcpy+0x15 ffs_inode_alloc(fffffd805de54f08,1f84,fffffd807f7d88a0,ffff800024907158) at ffs_inode_alloc+0x1be sys/ufs/ffs/ffs_alloc.c:394 ufs_makeinode(1f84,fffffd8067dc0860,ffff800024907370,ffff8000249073a0) at ufs_makeinode+0xae sys/ufs/ufs/ufs_vnops.c:1830 ufs_mknod(ffff800024907210) at ufs_mknod+0x4e sys/ufs/ufs/ufs_vnops.c:172 VOP_MKNOD(fffffd8067dc0860,ffff800024907370,ffff8000249073a0,ffff8000249072a0) at VOP_MKNOD+0xbf sys/kern/vfs_vops.c:121 domknodat(ffff80002166d260,ffffff9c,20000040,de761f86,0) at domknodat+0x326 sys/kern/vfs_syscalls.c:1630 syscall(ffff800024907540) at syscall+0x44e sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x400ef1a6d90, count: -8 ddb> show registers rdi 0xfffffd8072b0ba00 rsi 0xffff800019fa1200 rbp 0xffff800024906f80 rbx 0xfffffd80659ca6d8 rdx 0x100 rcx 0x20 rax 0x32d r8 0xffffffffffffffff r9 0xfffffd807f7d88a0 r10 0x776d8b6f1ec9b20 r11 0xfffffd8072b0ba00 r12 0xffff8000006dd000 r13 0xffff8000006b9800 r14 0 r15 0xfffffd806f3fbc30 rip 0xffffffff810ef5e5 memcpy+0x15 cs 0x8 rflags 0x10202 __ALIGN_SIZE+0xf202 rsp 0xffff800024906ef8 ss 0x10 memcpy+0x15: repe movsq (%rsi),%es:(%rdi) ddb> show proc PROC (syz-executor.4) pid=130774 stat=onproc flags process=0 proc=4000000 pri=77, usrpri=77, nice=20 forw=0xffffffffffffffff, list=0xffff80002166c000,0xffffffff829cd110 process=0xffff800024ad0800 user=0xffff800024902000, vmspace=0xfffffd8067c60000 estcpu=36, cpticks=0, pctcpu=0.0 user=0, sys=0, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 35697 411128 22531 0 2 0 syz-executor.4 *35697 130774 22531 0 7 0x4000000 syz-executor.4 75413 400011 59081 0 2 0 syz-executor.2 75413 293143 59081 0 2 0x4000000 syz-executor.2 75413 191140 59081 0 2 0x4000000 syz-executor.2 24909 407019 57223 0 2 0 syz-executor.5 24909 56939 57223 0 2 0x4000000 syz-executor.5 28898 273533 31909 0 2 0 syz-executor.1 28898 197215 31909 0 3 0x4000080 fsleep syz-executor.1 88275 25642 86293 0 2 0 syz-executor.6 88275 237794 86293 0 3 0x4000080 fsleep syz-executor.6 88275 350670 86293 0 3 0x4000080 fsleep syz-executor.6 88275 206802 86293 0 3 0x4000080 fsleep syz-executor.6 51455 328217 93380 0 2 0 syz-executor.7 51455 146049 93380 0 3 0x4000080 ttyout syz-executor.7 51455 340191 93380 0 3 0x4000080 fsleep syz-executor.7 89921 186035 49496 0 2 0 syz-executor.3 89921 288467 49496 0 3 0x4000080 fsleep syz-executor.3 22531 227207 99639 0 3 0x82 nanoslp syz-executor.4 59081 462473 99639 0 3 0x82 nanoslp syz-executor.2 86293 465444 99639 0 3 0x82 nanoslp syz-executor.6 73212 6124 99639 0 2 0x2 syz-executor.0 31909 196834 99639 0 3 0x82 nanoslp syz-executor.1 93380 260260 99639 0 3 0x82 nanoslp syz-executor.7 49496 215601 99639 0 3 0x82 nanoslp syz-executor.3 57223 445043 99639 0 3 0x82 nanoslp syz-executor.5 22590 317767 1 0 3 0x100083 ttyin getty 71269 503563 0 0 3 0x14280 nfsidl nfsio 62405 311709 0 0 3 0x14280 nfsidl nfsio 63689 221855 0 0 3 0x14280 nfsidl nfsio 38970 160282 0 0 3 0x14280 nfsidl nfsio 35042 164393 0 0 3 0x14280 nfsidl nfsio 83267 58204 0 0 3 0x14280 nfsidl nfsio 59661 44323 0 0 3 0x14280 nfsidl nfsio 77595 436539 0 0 3 0x14280 nfsidl nfsio 73799 192598 0 0 3 0x14280 nfsidl nfsio 63029 464094 0 0 3 0x14280 nfsidl nfsio 61956 162350 0 0 3 0x14280 nfsidl nfsio 4804 145921 0 0 3 0x14280 nfsidl nfsio 31447 318988 0 0 3 0x14280 nfsidl nfsio 59257 306915 0 0 3 0x14280 nfsidl nfsio 18561 249164 0 0 3 0x14280 nfsidl nfsio 73443 393285 0 0 3 0x14280 nfsidl nfsio 52224 298790 0 0 3 0x14280 nfsidl nfsio 66278 2772 0 0 3 0x14280 nfsidl nfsio 42227 250747 0 0 3 0x14280 nfsidl nfsio 35494 416647 0 0 3 0x14280 nfsidl nfsio 45329 129201 0 0 3 0x14200 bored sosplice 99639 303175 63716 0 3 0x82 kqread syz-fuzzer 99639 157093 63716 0 3 0x4000082 thrsleep syz-fuzzer 99639 78065 63716 0 3 0x4000082 thrsleep syz-fuzzer 99639 373479 63716 0 3 0x4000082 thrsleep syz-fuzzer 99639 375908 63716 0 3 0x4000082 thrsleep syz-fuzzer 99639 423145 63716 0 3 0x4000082 thrsleep syz-fuzzer 99639 298837 63716 0 3 0x4000082 thrsleep syz-fuzzer 99639 213016 63716 0 3 0x4000082 thrsleep syz-fuzzer 63716 483041 41928 0 3 0x10008a sigsusp ksh 41928 249447 35292 0 3 0x9a kqread sshd 35292 83326 1 0 3 0x88 kqread sshd 84797 249537 28702 73 2 0x1100010 syslogd 28702 107544 1 0 3 0x100082 netio syslogd 18208 97261 1 0 3 0x100080 kqread resolvd 81398 427503 87928 77 3 0x100092 kqread dhcpleased 58140 411490 87928 77 3 0x100092 kqread dhcpleased 87928 104641 1 0 3 0x80 kqread dhcpleased 29094 432966 0 0 3 0x14200 bored smr 66071 195157 0 0 2 0x14200 zerothread 70417 180438 0 0 3 0x14200 aiodoned aiodoned 52521 84533 0 0 3 0x14200 syncer update 18557 499378 0 0 3 0x14200 cleaner cleaner 4528 301458 0 0 3 0x14200 reaper reaper 65025 371045 0 0 3 0x14200 pgdaemon pagedaemon 11861 229677 0 0 3 0x14200 bored viomb 33349 96604 0 0 3 0x40014200 acpi0 acpi0 42865 444158 0 0 3 0x14200 bored softnet 9512 129239 0 0 3 0x14200 bored systqmp 80102 370682 0 0 3 0x14200 bored systq 9631 435379 0 0 3 0x40014200 bored softclock 55718 227061 0 0 3 0x40014200 idle0 1 389206 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb> show all locks No such command ddb> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10708 6459K 7365K 78643K 39440 0 pcb 13 14K 16K 78643K 1137 0 rtable 197 13K 15K 78643K 2515 0 ifaddr 87 20K 23K 78643K 786 0 sysctl 2 0K 0K 78643K 4 0 counters 25 17K 17K 78643K 124 0 ioctlops 0 0K 4K 78643K 4190 0 iov 0 0K 44K 78643K 539 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 4 0 vnodes 1364 85K 86K 78643K 8463 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 57 0 VM map 2 0K 0K 78643K 2 0 sem 12 1K 1K 78643K 12 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12548 0 file desc 17 61K 82K 78643K 6676 0 sigio 0 0K 0K 78643K 109 0 proc 65 55K 87K 78643K 2204 0 subproc 104 6K 6K 78643K 823 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 651 0 in_multi 57 3K 6K 78643K 992 0 ether_multi 1 0K 0K 78643K 100 0 mrt 1 0K 0K 78643K 27 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 253 1129K 1129K 78643K 253 0 exec 0 0K 2K 78643K 2517 0 pfkey data 0 0K 2K 78643K 3 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 473 709K 1105K 78643K 78871 0 UVM aobj 131 4K 4K 78643K 131 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 405 0 NDP 10 0K 2K 78643K 250 0 temp 133 4723K 4982K 78643K 152601 0 kqueue 12 18K 28K 78643K 489 0 SYN cache 2 16K 16K 78643K 2 0 ddb> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle rtpcb 120 523 0 520 5 4 1 3 0 8 0 rtentry 112 786 0 716 4 1 3 4 0 8 0 unpcb 136 5317 0 5304 63 58 5 9 0 8 4 syncache 296 20 0 20 6 6 0 1 0 8 0 sackhl 24 1 0 1 1 1 0 1 0 8 0 tcpqe 32 11 0 11 4 4 0 1 0 8 0 tcpcb 736 2507 0 2503 80 73 7 13 0 8 6 arp 88 141 0 128 1 0 1 1 0 8 0 ipq 40 7 0 7 2 2 0 1 0 8 0 ipqe 40 19 0 19 2 2 0 1 0 8 0 inpcb 304 7295 0 7287 103 98 5 19 0 8 4 rttmr 72 3 0 3 1 1 0 1 0 8 0 ip6q 72 56 0 55 2 1 1 1 0 8 0 ip6af 40 109 0 108 2 1 1 1 0 8 0 nd6 48 212 0 196 1 0 1 1 0 8 0 pkpcb 40 75 0 75 3 3 0 1 0 8 0 kcovpl 48 63 0 55 1 0 1 1 0 8 0 ppxss 1152 12 0 12 4 4 0 1 0 8 0 pfstscr 40 7 0 7 2 2 0 1 0 8 0 pfrktable 1344 86 0 71 2 0 2 2 0 8 0 pftag 88 7 0 0 1 0 1 1 0 8 0 pfstitem 24 11 0 9 1 0 1 1 0 8 0 pfstkey 112 23 0 21 2 1 1 1 0 8 0 pfstate 320 13 0 12 2 1 1 1 0 8 0 pfrule 1360 1387 0 1102 27 3 24 24 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 3122 0 2847 48 23 25 30 0 8 0 art_table 32 3123 0 2847 5 1 4 4 0 8 0 art_node 16 785 0 725 1 0 1 1 0 8 0 sysvmsgpl 40 1 0 0 1 0 1 1 0 8 0 semapl 112 10 0 0 1 0 1 1 0 8 0 shmpl 112 128 0 0 4 0 4 4 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 9624 0 8170 92 0 92 92 0 8 0 ffsino 240 9624 0 8170 86 0 86 86 0 8 0 nchpl 144 18191 0 16568 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 73071 0 73069 8 7 1 2 0 8 0 vcpupl 1984 46 0 0 6 0 6 6 0 8 0 vmpool 528 62 0 16 4 0 4 4 0 8 0 pfiaddrpl 120 37 0 18 1 0 1 1 0 8 0 scsiplug 72 7 0 7 1 1 0 1 0 8 0 scxspl 216 59611 0 59611 25 24 1 8 0 8 1 plimitpl 152 1081 0 1066 1 0 1 1 0 8 0 sigapl 424 6865 0 6803 10 2 8 8 0 8 0 futexpl 64 62865 0 62859 5 4 1 1 0 8 0 knotepl 120 61641 0 61561 17 13 4 10 0 8 0 kqueuepl 184 1177 0 1168 10 9 1 4 0 8 0 pipepl 304 1841 0 1813 48 43 5 10 0 8 2 fdescpl 432 6831 0 6803 4 0 4 4 0 8 0 filepl 120 52488 0 52186 91 80 11 19 0 8 1 lockfpl 104 11009 0 11007 25 24 1 4 0 8 0 lockfspl 48 5151 0 5149 3 2 1 2 0 8 0 sessionpl 144 79 0 63 1 0 1 1 0 8 0 pgrppl 48 100 0 84 1 0 1 1 0 8 0 ucredpl 96 6280 0 6267 1 0 1 1 0 8 0 zombiepl 144 6803 0 6803 1 0 1 1 0 8 1 processpl 1000 6865 0 6803 8 0 8 8 0 8 0 procpl 672 16298 0 16218 25 17 8 9 0 8 0 sosppl 168 38 0 38 7 7 0 1 0 8 0 sockpl 448 13279 0 13255 301 291 10 44 0 8 7 mcl64k 65536 231 0 231 19 19 0 1 0 8 0 mcl16k 16384 62 0 62 12 12 0 1 0 8 0 mcl12k 12288 189 0 189 22 21 1 1 0 8 1 mcl9k 9216 92 0 92 19 19 0 1 0 8 0 mcl8k 8192 469 0 469 20 19 1 1 0 8 1 mcl4k 4096 733 0 733 16 15 1 1 0 8 1 mcl2k2 2112 59 0 59 19 19 0 1 0 8 0 mcl2k 2048 89030 0 88950 33 21 12 18 0 8 0 mtagpl 96 5963 0 5366 40 24 16 25 0 8 0 mbufpl 256 192806 0 192023 133 81 52 79 0 8 0 bufpl 288 15794 0 9386 459 0 459 459 0 8 0 anonpl 24 1910968 0 1886381 268 119 149 167 0 188 0 amapchunkpl 152 217377 0 216502 372 261 111 350 0 158 75 amappl16 200 21448 0 20234 162 98 64 64 0 8 0 amappl15 192 1084 0 1079 1 0 1 1 0 8 0 amappl14 184 999 0 987 1 0 1 1 0 8 0 amappl13 176 1403 0 1398 1 0 1 1 0 8 0 amappl12 168 921 0 916 2 1 1 1 0 8 0 amappl11 160 526 0 515 1 0 1 1 0 8 0 amappl10 152 676 0 674 1 0 1 1 0 8 0 amappl9 144 1115 0 1112 1 0 1 1 0 8 0 amappl8 136 2639 0 2544 4 0 4 4 0 8 0 amappl7 128 1347 0 1336 1 0 1 1 0 8 0 amappl6 120 1034 0 1006 2 1 1 2 0 8 0 amappl5 112 5644 0 5631 1 0 1 1 0 8 0 amappl4 104 3368 0 3329 3 1 2 2 0 8 0 amappl3 96 1943 0 1928 1 0 1 1 0 8 0 amappl2 88 2567 0 2513 3 1 2 3 0 8 0 amappl1 80 122858 0 122261 20 7 13 18 0 8 0 amappl 88 77439 0 77136 8 0 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 72 130 0 0 3 0 3 3 0 8 0 uaddrrnd 24 6893 0 6819 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 6893 0 6819 1 0 1 1 0 8 0 vmmpekpl 168 53268 0 53208 4 0 4 4 0 8 0 vmmpepl 168 650568 0 647259 333 189 144 161 0 357 0 vmsppl 272 6892 0 6819 8 3 5 5 0 8 0 rwobjpl 24 154922 0 146589 51 0 51 51 0 8 0 pdppl 4096 13792 0 13684 624 514 110 110 0 8 2 pvpl 32 3348375 0 3319616 462 230 232 274 0 265 0 pmappl 216 6892 0 6819 5 0 5 5 0 8 0 extentpl 40 58 0 38 1 0 1 1 0 8 0 phpool 112 1973 0 1083 26 0 26 26 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace memcpy() at memcpy+0x15 ffs_inode_alloc(fffffd805de54f08,1f84,fffffd807f7d88a0,ffff800024907158) at ffs_inode_alloc+0x1be sys/ufs/ffs/ffs_alloc.c:394 ufs_makeinode(1f84,fffffd8067dc0860,ffff800024907370,ffff8000249073a0) at ufs_makeinode+0xae sys/ufs/ufs/ufs_vnops.c:1830 ufs_mknod(ffff800024907210) at ufs_mknod+0x4e sys/ufs/ufs/ufs_vnops.c:172 VOP_MKNOD(fffffd8067dc0860,ffff800024907370,ffff8000249073a0,ffff8000249072a0) at VOP_MKNOD+0xbf sys/kern/vfs_vops.c:121 domknodat(ffff80002166d260,ffffff9c,20000040,de761f86,0) at domknodat+0x326 sys/kern/vfs_syscalls.c:1630 syscall(ffff800024907540) at syscall+0x44e sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x400ef1a6d90, count: -8 ddb> machine ddbcpu 1 No such command ddb> trace memcpy() at memcpy+0x15 ffs_inode_alloc(fffffd805de54f08,1f84,fffffd807f7d88a0,ffff800024907158) at ffs_inode_alloc+0x1be sys/ufs/ffs/ffs_alloc.c:394 ufs_makeinode(1f84,fffffd8067dc0860,ffff800024907370,ffff8000249073a0) at ufs_makeinode+0xae sys/ufs/ufs/ufs_vnops.c:1830 ufs_mknod(ffff800024907210) at ufs_mknod+0x4e sys/ufs/ufs/ufs_vnops.c:172 VOP_MKNOD(fffffd8067dc0860,ffff800024907370,ffff8000249073a0,ffff8000249072a0) at VOP_MKNOD+0xbf sys/kern/vfs_vops.c:121 domknodat(ffff80002166d260,ffffff9c,20000040,de761f86,0) at domknodat+0x326 sys/kern/vfs_syscalls.c:1630 syscall(ffff800024907540) at syscall+0x44e sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x400ef1a6d90, count: -8