Warning: Permanently added '10.128.0.255' (ED25519) to the list of known hosts. 2026/05/21 03:11:05 ignoring optional flag "type"="gce" 2026/05/21 03:11:05 parsed 1 programs 2026/05/21 03:11:07 executed programs: 0 panic: ufs_rename: lost dir entry Stopped at db_enter+0x25: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND *194847 27273 0 0 0x4000000 0K syz-executor.4 db_enter() at db_enter+0x25 panic(ffffffff8354e119) at panic+0x1e5 ufs_rename(ffff80002a447428) at ufs_rename+0x175f VOP_RENAME(fffffd806a61db00,fffffd80686cae68,ffff80002a4475f8,fffffd806a61db00,0,ffff80002a447548) at VOP_RENAME+0x137 dorenameat(ffff80002a38b798,ffffff9c,200005c0,ffffff9c,20000800) at dorenameat+0x3f7 syscall(ffff80002a447790) at syscall+0xb17 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x21e332aa6e0, 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{0}> ddb{0}> set $lines = 0 ddb{0}> set $maxwidth = 0 ddb{0}> show panic *cpu0: ufs_rename: lost dir entry ddb{0}> trace db_enter() at db_enter+0x25 panic(ffffffff8354e119) at panic+0x1e5 ufs_rename(ffff80002a447428) at ufs_rename+0x175f VOP_RENAME(fffffd806a61db00,fffffd80686cae68,ffff80002a4475f8,fffffd806a61db00,0,ffff80002a447548) at VOP_RENAME+0x137 dorenameat(ffff80002a38b798,ffffff9c,200005c0,ffffff9c,20000800) at dorenameat+0x3f7 syscall(ffff80002a447790) at syscall+0xb17 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x21e332aa6e0, count: -7 ddb{0}> show registers rdi 0 rsi 0x1 rbp 0xffff80002a4471b0 rbx 0xffffffff839a0e07 cpu_info_full_primary+0x2e07 rdx 0x3fd rcx 0 rax 0x22 r8 0x101010101010101 r9 0x8080808080808080 r10 0x4bce432e0b31d933 r11 0x39a6eab2d46bdd48 r12 0xffffffff839a0c08 cpu_info_full_primary+0x2c08 r13 0 r14 0 r15 0x1 rip 0xffffffff82dff665 db_enter+0x25 cs 0x8 rflags 0x246 rsp 0xffff80002a4471a0 ss 0 db_enter+0x25: addq $0x8,%rsp ddb{0}> show proc PROC (syz-executor.4) tid=194847 pid=27273 tcnt=4 stat=onproc flags process=0 proc=4000000 runpri=17, usrpri=86, slppri=17, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff8000ffffc538,0xffff80002a38afe0 process=0xffff80002a3ec028 user=0xffff80002a442000, vmspace=0xfffffd806f3a87a8 estcpu=36, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 50135 229918 2719 0 3 0x80 nanoslp syz-executor.7 50135 160343 2719 0 3 0x4000080 fsleep syz-executor.7 50135 382709 2719 0 3 0x4000080 fsleep syz-executor.7 5107 475199 79782 0 2 0 syz-executor.3 5107 507019 79782 0 3 0x4000080 fsleep syz-executor.3 5107 416786 79782 0 2 0x4000000 syz-executor.3 19892 380905 14025 0 2 0 syz-executor.5 19892 64851 14025 0 3 0x4000080 fsleep syz-executor.5 19892 438409 14025 0 2 0x4000000 syz-executor.5 27273 188062 57717 0 3 0x80 nanoslp syz-executor.4 27273 91259 57717 0 2 0x4000000 syz-executor.4 27273 15912 57717 0 3 0x4000000 inode syz-executor.4 *27273 194847 57717 0 7 0x4000000 syz-executor.4 76408 357099 13099 0 2 0x2 syz-executor.2 2719 328596 13099 0 3 0x82 nanoslp syz-executor.7 2979 160661 13099 0 3 0x82 nanoslp syz-executor.0 94443 494028 13099 0 2 0x2 syz-executor.6 83487 330383 13099 0 3 0x10000082 nanoslp syz-executor.1 79782 503760 13099 0 3 0x82 nanoslp syz-executor.3 14025 54721 13099 0 3 0x82 nanoslp syz-executor.5 57717 371022 13099 0 3 0x82 nanoslp syz-executor.4 13099 503521 28541 0 3 0x82 thrsleep syz-execprog 13099 210773 28541 0 3 0x4000082 nanoslp syz-execprog 13099 463553 28541 0 3 0x4000082 wait syz-execprog 13099 24830 28541 0 3 0x4000082 wait syz-execprog 13099 278165 28541 0 3 0x4000082 thrsleep syz-execprog 13099 191062 28541 0 3 0x4000082 wait syz-execprog 13099 85880 28541 0 3 0x4000082 wait syz-execprog 13099 499896 28541 0 3 0x4000082 thrsleep syz-execprog 13099 258748 28541 0 3 0x4000082 wait syz-execprog 13099 442476 28541 0 3 0x4000082 wait syz-execprog 13099 354265 28541 0 3 0x4000082 thrsleep syz-execprog 13099 169565 28541 0 3 0x4000082 wait syz-execprog 13099 182831 28541 0 3 0x4000082 kqread syz-execprog 13099 216223 28541 0 3 0x4000082 wait syz-execprog 13099 500220 28541 0 3 0x4000082 thrsleep syz-execprog 28541 294010 20713 0 3 0x10008a sigsusp ksh 20713 162956 2073 0 3 0x98 kqread sshd-session 2073 286324 93641 0 3 0x92 kqread sshd-session 14190 105341 1 0 3 0x100083 ttyin getty 93641 448924 1 0 3 0x88 kqread sshd 56068 428054 13272 74 3 0x1100092 bpf pflogd 13272 449197 1 0 3 0x80 sbwait pflogd 77352 351734 22008 73 3 0x1100090 kqread syslogd 22008 45012 1 0 3 0x100082 sbwait syslogd 94108 346714 1 0 3 0x100080 kqread resolvd 83497 4067 15019 77 3 0x100092 kqread dhcpleased 2511 465358 15019 77 3 0x100092 kqread dhcpleased 15019 215693 1 0 3 0x80 kqread dhcpleased 2041 309666 0 0 3 0x14200 bored smr 42972 308925 0 0 3 0x14200 pgzero zerothread 85536 276827 0 0 3 0x14200 aiodoned aiodoned 21146 34173 0 0 3 0x14200 syncer update 23335 154161 0 0 3 0x14200 cleaner cleaner 86484 323863 0 0 3 0x14200 reaper reaper 29070 265863 0 0 3 0x14200 pgdaemon pagedaemon 13495 181290 0 0 3 0x14200 bored viomb 28802 448567 0 0 3 0x40014200 acpi0 acpi0 66470 473939 0 0 3 0x40014200 idle1 8053 88838 0 0 3 0x14200 bored softnet1 72824 29464 0 0 3 0x14200 bored softnet0 87013 19361 0 0 3 0x14200 bored systqmp 12644 176792 0 0 3 0x14200 bored systq 63159 98554 0 0 3 0x14200 tmoslp softclockmp 808 229726 0 0 3 0x40014200 tmoslp softclock 23320 38944 0 0 3 0x40014200 idle0 1 212763 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 5107 (syz-executor.3) thread 0xffff80002a38a570 (416786) exclusive rwlock vmmaplk r = 0 (0xfffffd807e7ea308) #0 witness_lock+0x5f1 #1 rw_do_enter_read+0x3e8 #2 uvmfault_lookup+0x122 #3 uvm_fault_check+0x4f #4 uvm_fault+0x106 #5 upageflttrap+0xa9 #6 usertrap+0x430 #7 recall_trap+0x8 Process 19892 (syz-executor.5) thread 0xffff80002a38b500 (438409) exclusive rrwlock inode r = 0 (0xfffffd80713b7c68) #0 witness_lock+0x5f1 #1 rw_do_enter_write+0x419 #2 rrw_enter+0xc6 #3 VOP_LOCK+0xbd #4 vn_lock+0xa4 #5 vget+0x2a2 #6 ufs_ihashget+0x185 #7 ffs_vget+0x8c #8 ufs_lookup+0x1a36 #9 VOP_LOOKUP+0x6e #10 vfs_relookup+0xd4 #11 ufs_rename+0x14aa #12 VOP_RENAME+0x137 #13 dorenameat+0x3f7 #14 syscall+0xb17 #15 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd8068dba570) #0 witness_lock+0x5f1 #1 rw_do_enter_write+0x419 #2 rrw_enter+0xc6 #3 VOP_LOCK+0xbd #4 vn_lock+0xa4 #5 vfs_relookup+0x5c #6 ufs_rename+0x14aa #7 VOP_RENAME+0x137 #8 dorenameat+0x3f7 #9 syscall+0xb17 #10 Xsyscall+0x128 Process 27273 (syz-executor.4) thread 0xffff80002a38b798 (194847) exclusive rrwlock inode r = 0 (0xfffffd80713b7b40) #0 witness_lock+0x5f1 #1 rw_do_enter_write+0x419 #2 rrw_enter+0xc6 #3 VOP_LOCK+0xbd #4 vn_lock+0xa4 #5 vget+0x2a2 #6 ufs_ihashget+0x185 #7 ffs_vget+0x8c #8 ufs_lookup+0x1a36 #9 VOP_LOOKUP+0x6e #10 vfs_relookup+0xd4 #11 ufs_rename+0x14aa #12 VOP_RENAME+0x137 #13 dorenameat+0x3f7 #14 syscall+0xb17 #15 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd80683517b8) #0 witness_lock+0x5f1 #1 rw_do_enter_write+0x419 #2 rrw_enter+0xc6 #3 VOP_LOCK+0xbd #4 vn_lock+0xa4 #5 vfs_relookup+0x5c #6 ufs_rename+0x14aa #7 VOP_RENAME+0x137 #8 dorenameat+0x3f7 #9 syscall+0xb17 #10 Xsyscall+0x128 exclusive kernel_lock &kernel_lock r = 0 (0xffffffff83b07900) #0 witness_lock+0x5f1 #1 __mp_acquire_count+0x58 #2 sleep_finish+0x2d8 #3 biowait+0xc6 #4 bwrite+0x2e7 #5 VOP_BWRITE+0x60 #6 ufs_direnter+0x7ac #7 ufs_rename+0xdb2 #8 VOP_RENAME+0x137 #9 dorenameat+0x3f7 #10 syscall+0xb17 #11 Xsyscall+0x128 Process 76408 (syz-executor.2) thread 0xffff80002a2afcb8 (357099) exclusive rrwlock inode r = 0 (0xfffffd8068dbac60) #0 witness_lock+0x5f1 #1 rw_do_enter_write+0x419 #2 rrw_enter+0xc6 #3 VOP_LOCK+0xbd #4 vn_lock+0xa4 #5 vget+0x2a2 #6 ufs_ihashget+0x185 #7 ffs_vget+0x8c #8 ufs_lookup+0x1a36 #9 VOP_LOOKUP+0x6e #10 vfs_lookup+0x963 #11 namei+0x7c5 #12 dounlinkat+0xc1 #13 syscall+0xb17 #14 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd8068dbab38) #0 witness_lock+0x5f1 #1 rw_do_enter_write+0x419 #2 rrw_enter+0xc6 #3 VOP_LOCK+0xbd #4 vn_lock+0xa4 #5 vget+0x2a2 #6 cache_lookup+0x351 #7 ufs_lookup+0x1e3 #8 VOP_LOOKUP+0x6e #9 vfs_lookup+0x963 #10 namei+0x7c5 #11 dounlinkat+0xc1 #12 syscall+0xb17 #13 Xsyscall+0x128 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 11053 12084K 12084K 166960K 12147 0 pcb 17 12K 12K 166960K 17 0 rtable 237 6K 7K 166960K 383 0 pf 34 17K 18K 166960K 48 0 ifaddr 43 7K 7K 166960K 49 0 ifgroup 55 2K 2K 166960K 60 0 sysctl 1 1K 9K 166960K 5 0 counters 70 37K 37K 166960K 72 0 ioctlops 0 0K 4K 166960K 1484 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1217 77K 77K 166960K 1285 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 1K 166960K 2 0 VM map 2 1K 1K 166960K 2 0 sem 2 0K 0K 166960K 2 0 dirhash 12 2K 2K 166960K 12 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 14 49K 81K 166960K 180 0 proc 69 115K 180K 166960K 579 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 in_multi 99 7K 7K 166960K 110 0 ether_multi 1 0K 0K 166960K 1 0 mrt 0 0K 0K 166960K 1 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 25 122K 122K 166960K 25 0 exec 0 0K 1K 166960K 476 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 277 170K 225K 166960K 4793 0 UVM aobj 3 2K 2K 166960K 3 0 pinsyscall 40 80K 112K 166960K 1758 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 NDP 24 1K 2K 166960K 31 0 temp 1 9108K 9236K 166960K 5704 0 kqueue 13 20K 20K 166960K 64 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 36 0 33 1 0 1 1 0 8 0 rtentry 176 122 0 12 6 1 5 5 0 8 0 unpcb 144 105 0 88 1 0 1 1 0 8 0 syncache 336 15 0 15 2 2 0 1 0 8 0 tcpcb 736 18 0 15 1 0 1 1 0 8 0 arp 136 20 0 2 1 0 1 1 0 8 0 inpcb 328 79 0 73 1 0 1 1 0 8 0 nd6 152 27 0 3 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 29 0 4 1 0 1 1 0 8 0 pfstkey 128 29 0 4 1 0 1 1 0 8 0 pfstate 448 29 0 4 3 0 3 3 0 8 0 pfrule 1360 21 0 16 2 1 1 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 500 0 48 32 3 29 29 0 8 0 art_table 40 501 0 48 6 1 5 5 0 8 0 art_node 32 122 0 22 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1684 0 187 94 0 94 94 0 8 0 ffsino 296 1684 0 187 116 0 116 116 0 8 0 nchpl 144 2008 0 217 67 0 67 67 0 8 0 vnodes 216 1698 0 0 95 0 95 95 0 8 0 namei 1024 9935 0 9929 8 6 2 3 0 8 0 percpumem 16 51 0 1 1 0 1 1 0 8 0 kstatmem 264 29 0 2 2 0 2 2 0 8 0 scxspl 216 10419 0 10419 11 10 1 8 1 8 1 plimitpl 152 71 0 54 1 0 1 1 0 8 0 sigapl 424 580 0 534 8 2 6 6 0 8 0 knotepl 120 131 0 0 4 0 4 4 0 8 0 kqueuepl 224 60 0 51 1 0 1 1 0 8 0 pipepl 344 223 0 195 5 2 3 3 0 8 0 fdescpl 528 564 0 536 4 1 3 3 0 8 0 filepl 160 2567 0 2429 8 2 6 6 0 8 0 lockfpl 104 6 0 4 1 0 1 1 0 8 0 lockfspl 48 4 0 2 1 0 1 1 0 8 0 sessionpl 144 47 0 30 1 0 1 1 0 8 0 pgrppl 48 47 0 30 1 0 1 1 0 8 0 ucredpl 104 236 0 223 1 0 1 1 0 8 0 zombiepl 144 543 0 541 6 5 1 1 0 8 0 processpl 1232 580 0 534 6 1 5 5 0 8 0 procpl 664 643 0 574 10 2 8 8 0 8 1 sockpl 752 220 0 194 4 1 3 4 0 8 0 mcl8k 8192 1 0 0 1 0 1 1 0 8 0 mcl4k 4096 180 0 0 20 0 20 20 0 8 0 mcl2k 2048 17 0 0 3 0 3 3 0 8 0 mtagpl 96 1 0 0 1 0 1 1 0 8 0 mbufpl 256 180 0 0 10 0 10 10 0 8 0 bufpl 280 4772 0 176 329 0 329 329 0 8 0 anonpl 32 9279 0 0 75 0 75 75 0 246 0 amapchunkpl 152 14615 0 13984 46 18 28 29 0 158 0 amappl16 200 4225 0 4132 13 6 7 7 0 8 0 amappl15 192 68 0 65 4 3 1 1 0 8 0 amappl14 184 480 0 479 2 1 1 1 0 8 0 amappl13 176 313 0 300 3 2 1 2 0 8 0 amappl12 168 880 0 851 3 1 2 2 0 8 0 amappl11 160 15 0 15 3 3 0 1 0 8 0 amappl10 152 129 0 106 3 2 1 2 0 8 0 amappl9 144 1099 0 1099 3 3 0 1 0 8 0 amappl8 136 266 0 235 2 0 2 2 0 8 0 amappl7 128 301 0 281 3 1 2 2 0 8 0 amappl6 120 245 0 241 1 0 1 1 0 8 0 amappl5 112 212 0 202 1 0 1 1 0 8 0 amappl4 104 558 0 537 3 2 1 2 0 8 0 amappl3 96 1939 0 1839 5 2 3 3 0 8 0 amappl2 88 1251 0 1186 8 5 3 5 0 8 0 amappl1 80 25408 0 24779 37 22 15 24 0 8 0 amappl 88 3508 0 3333 9 4 5 5 0 92 0 uvmvnodes 80 120 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 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 2 0 0 1 0 1 1 0 8 0 uaddrrnd 24 564 0 536 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 564 0 536 1 0 1 1 0 8 0 vmmpekpl 168 14343 0 14296 3 0 3 3 0 8 0 vmmpepl 168 79729 0 77823 152 61 91 126 0 357 1 vmsppl 488 563 0 535 6 2 4 5 0 8 0 rwobjpl 80 32470 0 31295 57 29 28 40 0 8 0 pdppl 4096 1135 0 1070 141 70 71 79 0 8 6 pvpl 32 51476 0 0 416 1 415 415 0 265 0 pmappl 256 563 0 535 3 1 2 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 327 0 85 8 0 8 8 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace db_enter() at db_enter+0x25 panic(ffffffff8354e119) at panic+0x1e5 ufs_rename(ffff80002a447428) at ufs_rename+0x175f VOP_RENAME(fffffd806a61db00,fffffd80686cae68,ffff80002a4475f8,fffffd806a61db00,0,ffff80002a447548) at VOP_RENAME+0x137 dorenameat(ffff80002a38b798,ffffff9c,200005c0,ffffff9c,20000800) at dorenameat+0x3f7 syscall(ffff80002a447790) at syscall+0xb17 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x21e332aa6e0, count: -7 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffff80002999dff0) at x86_ipi_db+0x27 x86_ipi_handler() at x86_ipi_handler+0xd9 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x27 __mp_lock(ffffffff83b07100) at __mp_lock+0x192 exit1(ffff80002a36da28,0,0,1) at exit1+0x701 sys_exit(ffff80002a36da28,ffff80002a2c9ef0,ffff80002a2c9e40) at sys_exit+0x1a syscall(ffff80002a2c9ef0) at syscall+0xb17 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7b8a5bf83010, count: 7 ddb{1}> trace x86_ipi_db(ffff80002999dff0) at x86_ipi_db+0x27 x86_ipi_handler() at x86_ipi_handler+0xd9 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x27 __mp_lock(ffffffff83b07100) at __mp_lock+0x192 exit1(ffff80002a36da28,0,0,1) at exit1+0x701 sys_exit(ffff80002a36da28,ffff80002a2c9ef0,ffff80002a2c9e40) at sys_exit+0x1a syscall(ffff80002a2c9ef0) at syscall+0xb17 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7b8a5bf83010, count: -8