panic: bad dir Stopped at db_enter+0x25: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND *279716 1679 0 0 0x4000000 0K syz-executor db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff833843f1) at panic+0x1e5 sys/kern/subr_prf.c:198 ufs_dirbadentry(ffff8000333e8708,ffff8000333e8708,e0f49778cb9a3201) at ufs_dirbadentry VOP_LOOKUP(fffffd8009eef5e8,ffff8000333e8980,ffff8000333e89b0) at VOP_LOOKUP+0x6e sys/kern/vfs_vops.c:85 vfs_lookup(ffff8000333e8950) at vfs_lookup+0x8fa sys/kern/vfs_lookup.c:566 namei(ffff8000333e8950) at namei+0x7aa sys/kern/vfs_lookup.c:250 domknodat(ffff80003c414558,ffffff9c,200000000000,2000,709) at domknodat+0xb4 sys/kern/vfs_syscalls.c:1588 syscall(ffff8000333e8b50) at syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff8000333e8b50) at syscall+0xb08 sys/arch/amd64/amd64/trap.c:579 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xa3f25efc900, count: 6 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: bad dir ddb{0}> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff833843f1) at panic+0x1e5 sys/kern/subr_prf.c:198 ufs_dirbadentry(ffff8000333e8708,ffff8000333e8708,e0f49778cb9a3201) at ufs_dirbadentry VOP_LOOKUP(fffffd8009eef5e8,ffff8000333e8980,ffff8000333e89b0) at VOP_LOOKUP+0x6e sys/kern/vfs_vops.c:85 vfs_lookup(ffff8000333e8950) at vfs_lookup+0x8fa sys/kern/vfs_lookup.c:566 namei(ffff8000333e8950) at namei+0x7aa sys/kern/vfs_lookup.c:250 domknodat(ffff80003c414558,ffffff9c,200000000000,2000,709) at domknodat+0xb4 sys/kern/vfs_syscalls.c:1588 syscall(ffff8000333e8b50) at syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff8000333e8b50) at syscall+0xb08 sys/arch/amd64/amd64/trap.c:579 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xa3f25efc900, count: -9 ddb{0}> show registers rdi 0 rsi 0x1 rbp 0xffff8000333e8530 rbx 0xffffffff8388adcf cpu_info_full_primary+0x2dcf rdx 0xffff800001479dc0 rcx 0xffff80003c414558 rax 0xffffffff83889ff0 cpu_info_full_primary+0x1ff0 r8 0x101010101010101 r9 0x8080808080808080 r10 0x62680afa612adf84 r11 0xf8326e4529b8b81a r12 0xffffffff8388abd0 cpu_info_full_primary+0x2bd0 r13 0 r14 0 r15 0x1 rip 0xffffffff83150a95 db_enter+0x25 cs 0x8 rflags 0x246 rsp 0xffff8000333e8520 ss 0x10 db_enter+0x25: addq $0x8,%rsp ddb{0}> show proc PROC (syz-executor) tid=279716 pid=1679 tcnt=2 stat=onproc flags process=0 proc=4000000 runpri=17, usrpri=50, slppri=17, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff80003c4142c8,0xffff80003c414d18 process=0xffff8000fffe6130 user=0xffff8000333e3000, vmspace=0xfffffd806a6345c0 estcpu=36, cpticks=0, pctcpu=0.0, user=0, sys=0, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 8912 409586 32953 0 2 0x1044 syz-executor 32953 85737 64676 0 3 0x82 ppwait syz-executor 1679 114769 27685 0 2 0 syz-executor * 1679 279716 27685 0 7 0x4000000 syz-executor 18655 123946 9524 0 2 0x100002 ndp 9524 454232 34487 0 3 0x10008a sigsusp sh 85421 421715 46990 0 3 0x80 nanoslp syz-executor 85421 338274 46990 0 2 0x4000000 syz-executor 85421 192800 46990 0 3 0x4000080 fsleep syz-executor 34487 457780 64676 0 3 0x82 wait syz-executor 88609 303288 64676 0 2 0x10000082 syz-executor 68333 252271 64676 0 2 0xc82 syz-executor 95472 140308 64676 0 3 0x82 wait syz-executor 46990 331889 64676 0 2 0xc82 syz-executor 50825 122118 0 0 3 0x14200 bored sosplice 77266 189640 64676 0 3 0x82 wait syz-executor 27685 262796 64676 0 3 0x82 nanoslp syz-executor 64676 278016 90635 0 3 0x82 kqread syz-executor 90635 374330 88371 0 3 0x10008a sigsusp ksh 88371 41348 24121 0 3 0x98 kqread sshd-session 24121 250200 11418 0 3 0x92 kqread sshd-session 11405 329137 1 0 3 0x100083 ttyopn getty 11418 170666 1 0 3 0x88 kqread sshd 73003 283270 22198 74 3 0x1100092 bpf pflogd 22198 54379 1 0 3 0x80 sbwait pflogd 83411 143229 75814 73 3 0x1100090 kqread syslogd 75814 236594 1 0 3 0x100082 sbwait syslogd 27303 311651 1 0 3 0x100080 kqread resolvd 9804 259905 43561 77 3 0x100092 kqread dhcpleased 86281 354772 43561 77 3 0x100092 kqread dhcpleased 43561 413371 1 0 3 0x80 kqread dhcpleased 80465 451340 0 0 3 0x14200 bored smr 53386 416267 0 0 2 0x14200 zerothread 49810 492262 0 0 3 0x14200 aiodoned aiodoned 99735 212186 0 0 3 0x14200 syncer update 48097 321368 0 0 3 0x14200 cleaner cleaner 96162 435312 0 0 3 0x14200 reaper reaper 13863 471790 0 0 3 0x14200 pgdaemon pagedaemon 36303 228467 0 0 3 0x14200 bored viomb 63959 24394 0 0 3 0x40014200 acpi0 acpi0 31318 279487 0 0 7 0x40014200 idle1 67513 463724 0 0 3 0x14200 bored softnet3 91655 509233 0 0 3 0x14200 bored softnet2 88744 247438 0 0 3 0x14200 bored softnet1 6873 136689 0 0 2 0x14200 softnet0 40719 392524 0 0 3 0x14200 bored systqmp 7152 402889 0 0 3 0x14200 bored systq 96416 53011 0 0 2 0x14200 softclockmp 48015 102380 0 0 3 0x40014200 tmoslp softclock 37949 114741 0 0 3 0x40014200 idle0 1 371140 0 0 3 0x82 wait init 0 0 -1 0 3 0x10010200 scheduler swapper ddb{0}> show all locks Process 1679 (syz-executor) thread 0xffff80003c414558 (279716) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff839eaeb0) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1160 #1 __mp_acquire_count+0x58 sys/kern/kern_lock.c:-1 #2 mi_switch+0x4b7 sys/kern/sched_bsd.c:441 #3 sleep_finish+0x24f sys/kern/kern_synch.c:412 #4 biowait+0xc1 sys/kern/vfs_bio.c:1246 #5 ffs_bufatoff+0x16f sys/ufs/ffs/ffs_subr.c:71 #6 ufs_lookup+0x548 sys/ufs/ufs/ufs_lookup.c:256 #7 VOP_LOOKUP+0x6e sys/kern/vfs_vops.c:85 #8 vfs_lookup+0x8fa sys/kern/vfs_lookup.c:566 #9 namei+0x7aa sys/kern/vfs_lookup.c:250 #10 domknodat+0xb4 sys/kern/vfs_syscalls.c:1588 #11 syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] #11 syscall+0xb08 sys/arch/amd64/amd64/trap.c:579 #12 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd807e315d00) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1160 #1 rw_do_enter_write+0x3ea sys/kern/kern_rwlock.c:316 #2 rrw_enter+0xc6 sys/kern/kern_rwlock.c:616 #3 VOP_LOCK+0xa6 sys/kern/vfs_vops.c:527 #4 vn_lock+0xa4 sys/kern/vfs_vnops.c:570 #5 vfs_lookup+0x109 sys/kern/vfs_lookup.c:418 #6 namei+0x7aa sys/kern/vfs_lookup.c:250 #7 domknodat+0xb4 sys/kern/vfs_syscalls.c:1588 #8 syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] #8 syscall+0xb08 sys/arch/amd64/amd64/trap.c:579 #9 Xsyscall+0x128 Process 85421 (syz-executor) thread 0xffff80003c415748 (338274) exclusive rrwlock inode r = 0 (0xfffffd807e315be0) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1160 #1 rw_do_enter_write+0x3ea sys/kern/kern_rwlock.c:316 #2 rrw_enter+0xc6 sys/kern/kern_rwlock.c:616 #3 VOP_LOCK+0xa6 sys/kern/vfs_vops.c:527 #4 vn_lock+0xa4 sys/kern/vfs_vnops.c:570 #5 vget+0x2bd sys/kern/vfs_subr.c:693 #6 cache_lookup+0x36e sys/kern/vfs_cache.c:222 #7 ufs_lookup+0x21b sys/ufs/ufs/ufs_lookup.c:160 #8 VOP_LOOKUP+0x6e sys/kern/vfs_vops.c:85 #9 vfs_lookup+0x8fa sys/kern/vfs_lookup.c:566 #10 namei+0x7aa sys/kern/vfs_lookup.c:250 #11 ptm_vn_open+0x40 sys/kern/tty_pty.c:1013 #12 ptmioctl+0x89a sys/kern/tty_pty.c:1178 #13 VOP_IOCTL+0xac sys/kern/vfs_vops.c:264 #14 vn_ioctl+0xf8 sys/kern/vfs_vnops.c:531 #15 sys_ioctl+0x5c3 sys/kern/sys_generic.c:-1 #16 syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] #16 syscall+0xbc6 sys/arch/amd64/amd64/trap.c:579 #17 Xsyscall+0x128 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10234 11043K 11488K 166960K 13141 0 pcb 17 16K 18K 166960K 260 0 rtable 194 7K 8K 166960K 656 0 pf 37 18K 20K 166960K 124 0 ifaddr 40 7K 8K 166960K 108 0 ifgroup 59 2K 2K 166960K 164 0 sysctl 3 1K 9K 166960K 11 0 counters 68 36K 37K 166960K 154 0 ioctlops 0 0K 4K 166960K 1693 0 iov 0 0K 24K 166960K 234 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1431 90K 91K 166960K 2566 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 5K 166960K 16 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 165 0 dirhash 12 2K 2K 166960K 33 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 18 65K 93K 166960K 1288 0 sigio 0 0K 0K 166960K 150 0 proc 72 91K 127K 166960K 798 0 subproc 72 4K 4K 166960K 135 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 154 0 in_multi 78 5K 7K 166960K 194 0 ether_multi 1 0K 0K 166960K 5 0 mrt 0 0K 0K 166960K 7 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 229 1023K 1023K 166960K 229 0 exec 1 0K 1K 166960K 712 0 fusefs mount 1 32K 32K 166960K 1 0 pfkey data 0 0K 0K 166960K 4 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 244 154K 173K 166960K 13111 0 UVM aobj 108 3K 5K 166960K 113 0 pinsyscall 45 90K 105K 166960K 2561 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 1K 166960K 57 0 NDP 15 0K 2K 166960K 72 0 temp 78 8671K 8741K 166960K 73502 0 kqueue 13 20K 30K 166960K 215 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 120 259 0 255 4 2 2 3 0 8 1 rtentry 176 200 0 117 6 0 6 6 0 8 1 unpcb 144 1000 0 983 10 7 3 4 0 8 2 syncache 336 7 0 7 3 3 0 1 0 8 0 tcpcb 808 322 0 316 9 8 1 8 0 8 0 arp 128 33 0 17 1 0 1 1 0 8 0 inpcb 384 1426 0 1418 25 18 7 14 0 8 6 nd6 144 45 0 28 2 1 1 2 0 8 0 pkpcb 40 9 0 9 3 2 1 1 0 8 1 kcovpl 48 15 0 7 1 0 1 1 0 8 0 mppekey 1024 1 0 1 1 1 0 1 0 8 0 ppxss 1192 27 0 27 3 2 1 1 0 8 1 pppxif 1504 5 0 5 2 2 0 1 0 8 0 pffrag 232 4 0 0 1 0 1 1 0 482 0 pffrnode 88 4 0 0 1 0 1 1 0 8 0 pffrent 40 4 0 0 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 pftag 88 1 0 0 1 0 1 1 0 8 0 pfstitem 24 68 0 23 1 0 1 1 0 8 0 pfstkey 128 68 0 23 2 0 2 2 0 8 0 pfstate 384 67 0 23 5 0 5 5 0 8 0 pfrule 1344 22 0 17 2 1 1 2 0 8 0 rttmr 136 1 0 1 1 1 0 1 0 8 0 art_heap8 4096 3 0 0 3 0 3 3 0 8 0 art_heap4 256 820 0 456 35 9 26 29 0 8 1 art_table 32 823 0 456 4 0 4 4 0 8 0 art_node 16 199 0 125 1 0 1 1 0 8 0 sysvmsgpl 40 48 0 8 1 0 1 1 0 8 0 semupl 112 1 0 1 1 1 0 1 0 8 0 semapl 112 162 0 152 1 0 1 1 0 8 0 shmpl 112 110 0 5 4 0 4 4 0 8 1 dirhash 1024 31 0 14 3 0 3 3 0 8 0 dino2pl 256 3697 0 2181 96 0 96 96 0 8 0 ffsino 288 3698 0 2181 109 0 109 109 0 8 0 nchpl 144 5468 0 4861 64 40 24 64 0 8 0 rtmask 32 5 0 5 2 1 1 1 0 8 1 uvmvnodes 80 4474 0 0 92 0 92 92 0 8 0 vnodes 216 4474 0 0 249 0 249 249 0 8 0 namei 1024 19701 0 19698 11 10 1 5 0 8 0 percpumem 16 92 0 43 1 0 1 1 0 8 0 kstatmem 264 92 0 62 4 1 3 3 0 8 0 scsiplug 72 3 0 3 3 3 0 1 0 8 0 scxspl 216 17613 0 17613 11 10 1 8 1 8 1 plimitpl 152 166 0 149 1 0 1 1 0 8 0 sigapl 424 1600 0 1548 10 3 7 9 0 8 0 knotepl 120 583 0 0 18 0 18 18 0 8 0 kqueuepl 224 351 0 341 2 1 1 2 0 8 0 pipepl 336 238 0 211 6 3 3 6 0 8 0 fdescpl 520 1558 0 1526 3 0 3 3 0 8 0 filepl 160 10554 0 10214 28 12 16 20 0 8 0 lockfpl 104 547 0 545 2 1 1 2 0 8 0 lockfspl 48 225 0 223 1 0 1 1 0 8 0 sessionpl 144 33 0 24 1 0 1 1 0 8 0 pgrppl 48 61 0 44 1 0 1 1 0 8 0 ucredpl 104 1804 0 1791 1 0 1 1 0 8 0 zombiepl 144 1826 0 1822 3 2 1 1 0 8 0 processpl 1208 1600 0 1548 7 1 6 6 0 8 1 procpl 656 3467 0 3412 8 2 6 8 0 8 0 srpgc 96 16 0 16 2 1 1 1 0 8 1 sosppl 168 9 0 9 2 2 0 1 0 8 0 sockpl 728 2720 0 2691 33 24 9 15 0 8 6 mcl64k 65536 3 0 0 1 0 1 1 0 8 0 mcl16k 16384 4 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 114 0 0 15 0 15 15 0 8 0 mcl2k2 2112 1 0 0 1 0 1 1 0 8 0 mcl2k 2048 35 0 0 5 0 5 5 0 8 0 mtagpl 96 80 0 0 2 0 2 2 0 8 0 mbufpl 256 1224 0 0 76 0 76 76 0 8 0 bufpl 280 4874 0 129 339 0 339 339 0 8 0 anonpl 32 10547 0 0 85 0 85 85 0 246 0 amapchunkpl 152 43443 0 42885 48 18 30 34 0 158 2 amappl16 200 4597 0 4473 38 21 17 19 0 8 5 amappl15 192 10 0 9 1 0 1 1 0 8 0 amappl14 184 155 0 142 1 0 1 1 0 8 0 amappl13 176 4 0 4 2 2 0 1 0 8 0 amappl12 168 2307 0 2275 3 0 3 3 0 8 0 amappl11 160 52 0 38 1 0 1 1 0 8 0 amappl10 152 5 0 3 1 0 1 1 0 8 0 amappl9 144 245 0 244 1 0 1 1 0 8 0 amappl8 136 26 0 23 1 0 1 1 0 8 0 amappl7 128 123 0 110 1 0 1 1 0 8 0 amappl6 120 251 0 246 1 0 1 1 0 8 0 amappl5 112 152 0 142 1 0 1 1 0 8 0 amappl4 104 347 0 325 1 0 1 1 0 8 0 amappl3 96 8772 0 8663 5 1 4 4 0 8 0 amappl2 88 759 0 691 2 0 2 2 0 8 0 amappl1 80 14270 0 13643 18 4 14 15 0 8 0 amappl 88 12074 0 11906 6 1 5 5 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 72 112 0 5 2 0 2 2 0 8 0 uaddrrnd 24 1559 0 1527 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1559 0 1527 1 0 1 1 0 8 0 vmmpekpl 168 13725 0 13667 4 0 4 4 0 8 0 vmmpepl 168 105279 0 103191 118 12 106 106 0 357 5 vmsppl 480 1558 0 1527 6 1 5 5 0 8 0 rwobjpl 72 33024 0 27365 106 1 105 105 0 8 0 pdppl 4096 3126 0 3054 122 46 76 86 0 8 4 pvpl 32 18094 0 0 147 1 146 146 0 265 0 pmappl 256 1558 0 1527 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 503 0 82 13 0 13 13 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff833843f1) at panic+0x1e5 sys/kern/subr_prf.c:198 ufs_dirbadentry(ffff8000333e8708,ffff8000333e8708,e0f49778cb9a3201) at ufs_dirbadentry VOP_LOOKUP(fffffd8009eef5e8,ffff8000333e8980,ffff8000333e89b0) at VOP_LOOKUP+0x6e sys/kern/vfs_vops.c:85 vfs_lookup(ffff8000333e8950) at vfs_lookup+0x8fa sys/kern/vfs_lookup.c:566 namei(ffff8000333e8950) at namei+0x7aa sys/kern/vfs_lookup.c:250 domknodat(ffff80003c414558,ffffff9c,200000000000,2000,709) at domknodat+0xb4 sys/kern/vfs_syscalls.c:1588 syscall(ffff8000333e8b50) at syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff8000333e8b50) at syscall+0xb08 sys/arch/amd64/amd64/trap.c:579 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xa3f25efc900, count: -9 ddb{0}> machine ddbcpu 1 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffff8000299ddff0) 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+0x41e sys/dev/acpi/acpicpu.c:1218 sched_idle(ffff8000299ddff0) at sched_idle+0x538 sys/kern/kern_sched.c:182 end trace frame: 0x0, count: 10 ddb{1}> trace x86_ipi_db(ffff8000299ddff0) 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+0x41e sys/dev/acpi/acpicpu.c:1218 sched_idle(ffff8000299ddff0) at sched_idle+0x538 sys/kern/kern_sched.c:182 end trace frame: 0x0, count: -5