panic: bad dir Stopped at db_enter+0x25: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND * 39120 36872 0 0x2000 0x4000000 0K syz-executor db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff833912b1) at panic+0x1e5 sys/kern/subr_prf.c:198 ufs_dirbadentry(ffff80003c46cc88,ffff80003c46cc88,6696078d526a971a) at ufs_dirbadentry VOP_LOOKUP(fffffd800b033798,ffff80003c46ce58,ffff80003c46ce88) at VOP_LOOKUP+0x6e sys/kern/vfs_vops.c:85 vfs_lookup(ffff80003c46ce28) at vfs_lookup+0x8fa sys/kern/vfs_lookup.c:566 namei(ffff80003c46ce28) at namei+0x7aa sys/kern/vfs_lookup.c:250 sys_unveil(ffff80003c4519c8,ffff80003c46d010,ffff80003c46cf60) at sys_unveil+0x329 sys/kern/vfs_syscalls.c:1009 syscall(ffff80003c46d010) at syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c46d010) at syscall+0xb08 sys/arch/amd64/amd64/trap.c:579 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x1f33bf555e0, 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(ffffffff833912b1) at panic+0x1e5 sys/kern/subr_prf.c:198 ufs_dirbadentry(ffff80003c46cc88,ffff80003c46cc88,6696078d526a971a) at ufs_dirbadentry VOP_LOOKUP(fffffd800b033798,ffff80003c46ce58,ffff80003c46ce88) at VOP_LOOKUP+0x6e sys/kern/vfs_vops.c:85 vfs_lookup(ffff80003c46ce28) at vfs_lookup+0x8fa sys/kern/vfs_lookup.c:566 namei(ffff80003c46ce28) at namei+0x7aa sys/kern/vfs_lookup.c:250 sys_unveil(ffff80003c4519c8,ffff80003c46d010,ffff80003c46cf60) at sys_unveil+0x329 sys/kern/vfs_syscalls.c:1009 syscall(ffff80003c46d010) at syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c46d010) at syscall+0xb08 sys/arch/amd64/amd64/trap.c:579 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x1f33bf555e0, count: -9 ddb{0}> show registers rdi 0 rsi 0x1 rbp 0xffff80003c46cab0 rbx 0xffffffff83826dd7 cpu_info_full_primary+0x2dd7 rdx 0xffff800001453800 rcx 0xffff80003c4519c8 rax 0xffffffff83825ff0 cpu_info_full_primary+0x1ff0 r8 0x101010101010101 r9 0x8080808080808080 r10 0x77712ce6fab963cf r11 0xf7330a8134c2c072 r12 0xffffffff83826bd8 cpu_info_full_primary+0x2bd8 r13 0 r14 0 r15 0x1 rip 0xffffffff825d40f5 db_enter+0x25 cs 0x8 rflags 0x246 rsp 0xffff80003c46caa0 ss 0 db_enter+0x25: addq $0x8,%rsp ddb{0}> show proc PROC (syz-executor) tid=39120 pid=36872 tcnt=2 stat=onproc flags process=2000 proc=4000000 runpri=17, usrpri=81, slppri=17, nice=20 wchan=0x0, wmesg=, ps_single=0xffff80003c4519c8 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff80002a297730,0xffffffff83931c30 process=0xffff80003c4489d8 user=0xffff80003c468000, vmspace=0xfffffd806ef25008 estcpu=31, cpticks=0, pctcpu=0.0, user=0, sys=0, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 36872 238676 3135 0 4 0x82000 syz-executor *36872 39120 3135 0 7 0x4002000 syz-executor 97490 501586 92866 0 2 0 syz-executor 97490 187772 92866 0 2 0x4000000 syz-executor 5848 223525 4541 0 2 0 syz-executor 39200 34401 71283 0 2 0 syz-executor 39200 145945 71283 0 3 0x4000080 fsleep syz-executor 12618 424708 63223 0 2 0 syz-executor 12618 10707 63223 0 2 0x4000000 syz-executor 12618 30602 63223 0 3 0x4000080 fsleep syz-executor 42687 319773 36370 0 2 0 syz-executor 42687 106999 36370 0 3 0x4000080 fsleep syz-executor 60813 484306 12220 0 2 0 syz-executor 60813 148626 12220 0 3 0x4000080 fsleep syz-executor 71283 336752 6153 0 2 0xc82 syz-executor 1996 508913 0 0 3 0x14280 nfsidl nfsio 93172 303250 0 0 3 0x14280 nfsidl nfsio 60085 479624 0 0 3 0x14280 nfsidl nfsio 2882 130471 0 0 3 0x14280 nfsidl nfsio 69100 483585 0 0 3 0x14280 nfsidl nfsio 30410 25267 0 0 3 0x14280 nfsidl nfsio 85125 305916 0 0 3 0x14280 nfsidl nfsio 16284 352549 0 0 3 0x14280 nfsidl nfsio 27478 130823 0 0 3 0x14280 nfsidl nfsio 76280 291220 0 0 3 0x14280 nfsidl nfsio 7993 109920 0 0 3 0x14280 nfsidl nfsio 32097 34184 0 0 3 0x14280 nfsidl nfsio 50902 130412 0 0 3 0x14280 nfsidl nfsio 94545 24860 0 0 3 0x14280 nfsidl nfsio 12285 306261 0 0 3 0x14280 nfsidl nfsio 27343 332976 0 0 3 0x14280 nfsidl nfsio 7975 191474 0 0 3 0x14280 nfsidl nfsio 65075 13280 0 0 3 0x14280 nfsidl nfsio 4735 315792 0 0 3 0x14280 nfsidl nfsio 84023 242135 0 0 3 0x14280 nfsidl nfsio 63223 486236 6153 0 2 0xc82 syz-executor 89155 373844 0 0 3 0x14200 bored sosplice 36370 436663 6153 0 2 0xc82 syz-executor 98055 92034 6153 0 2 0xc82 syz-executor 3135 179673 6153 0 2 0xc82 syz-executor 4541 483111 6153 0 3 0x82 nanoslp syz-executor 92866 327861 6153 0 3 0x82 nanoslp syz-executor 12220 440648 6153 0 2 0xc82 syz-executor 6153 201122 43028 0 3 0x82 kqread syz-executor 43028 184820 43788 0 3 0x10008a sigsusp ksh 43788 163694 26530 0 3 0x98 kqread sshd-session 26530 175746 23039 0 3 0x92 kqread sshd-session 11408 241574 1 0 3 0x100083 ttyin getty 23039 273300 1 0 3 0x88 kqread sshd 8065 287803 79038 74 3 0x1100092 bpf pflogd 79038 205656 1 0 3 0x80 sbwait pflogd 14987 243948 86318 73 3 0x1100090 kqread syslogd 86318 454474 1 0 3 0x100082 sbwait syslogd 62455 112280 1 0 3 0x100080 kqread resolvd 51640 244681 43287 77 3 0x100092 kqread dhcpleased 48670 466900 43287 77 3 0x100092 kqread dhcpleased 43287 115839 1 0 3 0x80 kqread dhcpleased 58286 523669 0 0 2 0x14200 smr 77629 523398 0 0 2 0x14200 zerothread 40760 90871 0 0 3 0x14200 aiodoned aiodoned 90875 427049 0 0 3 0x14200 syncer update 28007 13323 0 0 3 0x14200 cleaner cleaner 54413 446566 0 0 3 0x14200 reaper reaper 3646 505697 0 0 3 0x14200 pgdaemon pagedaemon 85382 454684 0 0 3 0x14200 bored viomb 35166 219507 0 0 3 0x40014200 acpi0 acpi0 68223 10258 0 0 7 0x40014200 idle1 73218 276862 0 0 3 0x14200 bored softnet3 28733 461532 0 0 3 0x14200 bored softnet2 2896 380822 0 0 3 0x14200 bored softnet1 27619 130164 0 0 3 0x14200 bored softnet0 15684 257648 0 0 3 0x14200 bored systqmp 78862 118910 0 0 3 0x14200 bored systq 41845 47983 0 0 3 0x14200 tmoslp softclockmp 99654 357517 0 0 2 0x40014200 softclock 27329 54155 0 0 3 0x40014200 idle0 1 183819 0 0 3 0x82 wait init 0 0 -1 0 3 0x10010200 scheduler swapper ddb{0}> show all locks Process 36872 (syz-executor) thread 0xffff80003c4519c8 (39120) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff839d8340) #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 sleep_finish+0x2da sys/kern/kern_synch.c:366 #3 biowait+0xc1 sys/kern/vfs_bio.c:1242 #4 ffs_bufatoff+0x16f sys/ufs/ffs/ffs_subr.c:71 #5 ufs_lookup+0x548 sys/ufs/ufs/ufs_lookup.c:256 #6 VOP_LOOKUP+0x6e sys/kern/vfs_vops.c:85 #7 vfs_lookup+0x8fa sys/kern/vfs_lookup.c:566 #8 namei+0x7aa sys/kern/vfs_lookup.c:250 #9 sys_unveil+0x329 sys/kern/vfs_syscalls.c:1009 #10 syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] #10 syscall+0xb08 sys/arch/amd64/amd64/trap.c:579 #11 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd807e452d00) #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+0x377 sys/kern/kern_rwlock.c:310 #2 rrw_enter+0xc6 sys/kern/kern_rwlock.c:605 #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 sys_unveil+0x329 sys/kern/vfs_syscalls.c:1009 #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 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10241 11129K 11527K 166960K 12232 0 pcb 17 12K 12K 166960K 87 0 rtable 159 6K 9K 166960K 462 0 pf 33 17K 20K 166960K 107 0 ifaddr 30 4K 8K 166960K 77 0 ifgroup 51 2K 2K 166960K 117 0 sysctl 4 1K 9K 166960K 9 0 counters 66 36K 37K 166960K 122 0 ioctlops 0 0K 4K 166960K 1637 0 iov 0 0K 16K 166960K 94 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1399 88K 89K 166960K 1941 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 5K 166960K 11 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 19 0 dirhash 12 2K 2K 166960K 24 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 18 65K 93K 166960K 664 0 sigio 0 0K 0K 166960K 11 0 proc 76 103K 128K 166960K 641 0 subproc 72 4K 4K 166960K 90 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 67 0 in_multi 55 4K 7K 166960K 144 0 ether_multi 1 0K 0K 166960K 7 0 mrt 1 0K 0K 166960K 3 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 73 334K 334K 166960K 73 0 exec 0 0K 1K 166960K 475 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 241 167K 186K 166960K 7559 0 UVM aobj 19 2K 4K 166960K 21 0 pinsyscall 43 86K 106K 166960K 1799 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 28 0 NDP 11 0K 2K 166960K 50 0 temp 50 8689K 8753K 166960K 28404 0 kqueue 13 20K 29K 166960K 124 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 0 132 3 2 1 3 0 8 0 rtentry 176 144 0 77 6 0 6 6 0 8 0 unpcb 144 495 0 477 7 1 6 6 0 8 5 syncache 336 5 0 5 2 1 1 1 0 8 1 tcpqe 32 2 0 2 1 0 1 1 0 8 1 tcpcb 736 415 0 410 13 6 7 13 0 8 6 arp 128 22 0 12 1 0 1 1 0 8 0 inpcb 328 726 0 718 12 5 7 12 0 8 5 nd6 144 34 0 20 2 0 2 2 0 8 0 pkpcb 40 4 0 4 1 1 0 1 0 8 0 kcovpl 48 10 0 2 1 0 1 1 0 8 0 mppekey 1024 2 0 2 1 0 1 1 0 8 1 ppxss 1192 17 0 17 2 1 1 1 0 8 1 pppxif 1504 5 0 5 2 1 1 1 0 8 1 pfstscr 40 1 0 1 1 1 0 1 0 8 0 pffrag 232 2 0 0 1 0 1 1 0 482 0 pffrnode 88 2 0 0 1 0 1 1 0 8 0 pffrent 40 2 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 pfstitem 24 63 0 16 1 0 1 1 0 8 0 pfstkey 128 64 0 17 2 0 2 2 0 8 0 pfstate 384 64 0 17 6 0 6 6 0 8 0 pfrule 1344 29 0 24 2 1 1 2 0 8 0 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 591 0 303 30 1 29 30 0 8 5 art_table 32 593 0 303 4 0 4 4 0 8 0 art_node 16 142 0 81 1 0 1 1 0 8 0 sysvmsgpl 40 12 0 5 1 0 1 1 0 8 0 semapl 112 16 0 6 1 0 1 1 0 8 0 shmpl 112 18 0 2 1 0 1 1 0 8 0 dirhash 1024 25 0 8 3 0 3 3 0 8 0 dino2pl 256 2494 0 988 96 0 96 96 0 8 0 ffsino 288 2494 0 988 109 0 109 109 0 8 0 nchpl 144 3361 0 1667 64 0 64 64 0 8 0 rtmask 32 1 0 1 1 1 0 1 0 8 0 uvmvnodes 80 2965 0 0 61 0 61 61 0 8 0 vnodes 216 2965 0 0 165 0 165 165 0 8 0 namei 1024 11388 0 11386 2 1 1 2 0 8 0 percpumem 16 76 0 28 1 0 1 1 0 8 0 kstatmem 264 64 0 38 4 1 3 3 0 8 0 scsiplug 72 3 0 3 2 1 1 1 0 8 1 scxspl 216 11977 0 11977 10 2 8 8 1 8 8 plimitpl 152 233 0 216 1 0 1 1 0 8 0 sigapl 424 981 0 910 10 1 9 9 0 8 0 knotepl 120 311 0 0 10 0 10 10 0 8 0 kqueuepl 224 260 0 251 6 4 2 5 0 8 1 pipepl 336 150 0 123 3 0 3 3 0 8 0 fdescpl 520 941 0 909 3 0 3 3 0 8 0 filepl 160 5336 0 5122 16 0 16 16 0 8 5 lockfpl 104 209 0 207 1 0 1 1 0 8 0 lockfspl 48 70 0 68 1 0 1 1 0 8 0 sessionpl 144 25 0 16 1 0 1 1 0 8 0 pgrppl 48 43 0 26 1 0 1 1 0 8 0 ucredpl 104 552 0 539 1 0 1 1 0 8 0 zombiepl 144 911 0 910 1 0 1 1 0 8 0 processpl 1240 981 0 910 6 0 6 6 0 8 0 procpl 656 1787 0 1709 8 0 8 8 0 8 0 srpgc 96 12 0 12 2 1 1 1 0 8 1 sockpl 728 1373 0 1341 23 10 13 18 0 8 8 mcl64k 65536 5 0 0 1 0 1 1 0 8 0 mcl16k 16384 1 0 0 1 0 1 1 0 8 0 mcl12k 12288 1 0 0 1 0 1 1 0 8 0 mcl8k 8192 2 0 0 1 0 1 1 0 8 0 mcl4k 4096 112 0 0 14 0 14 14 0 8 0 mcl2k 2048 38 0 0 5 0 5 5 0 8 0 mtagpl 96 23 0 0 1 0 1 1 0 8 0 mbufpl 256 296 0 0 19 0 19 19 0 8 0 bufpl 280 3732 0 127 258 0 258 258 0 8 0 anonpl 32 7676 0 0 62 0 62 62 0 246 0 amapchunkpl 152 36025 0 35529 35 8 27 35 0 158 7 amappl16 200 3101 0 2826 21 6 15 15 0 8 0 amappl15 192 3 0 3 1 1 0 1 0 8 0 amappl14 184 118 0 106 1 0 1 1 0 8 0 amappl13 176 6 0 6 1 1 0 1 0 8 0 amappl12 168 1610 0 1578 3 1 2 2 0 8 0 amappl11 160 49 0 35 1 0 1 1 0 8 0 amappl10 152 42 0 42 1 1 0 1 0 8 0 amappl9 144 270 0 270 1 1 0 1 0 8 0 amappl8 136 27 0 24 1 0 1 1 0 8 0 amappl7 128 111 0 99 1 0 1 1 0 8 0 amappl6 120 215 0 212 1 0 1 1 0 8 0 amappl5 112 143 0 134 1 0 1 1 0 8 0 amappl4 104 321 0 298 1 0 1 1 0 8 0 amappl3 96 4627 0 4520 4 0 4 4 0 8 0 amappl2 88 672 0 608 2 0 2 2 0 8 0 amappl1 80 10713 0 10103 17 2 15 15 0 8 1 amappl 88 6766 0 6600 5 0 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 128 255 0 255 3 2 1 1 0 8 1 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 19 0 18 1 0 1 1 0 8 0 aobjpl 72 20 0 2 1 0 1 1 0 8 0 uaddrrnd 24 942 0 910 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 942 0 910 1 0 1 1 0 8 0 vmmpekpl 168 8890 0 8836 3 0 3 3 0 8 0 vmmpepl 168 65241 0 62977 103 3 100 100 0 357 1 vmsppl 480 941 0 910 5 0 5 5 0 8 0 rwobjpl 72 22063 0 17906 76 0 76 76 0 8 0 pdppl 4096 1891 0 1820 103 30 73 85 0 8 2 pvpl 32 15790 0 0 128 0 128 128 0 265 0 pmappl 256 941 0 910 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 411 0 41 11 0 11 11 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(ffffffff833912b1) at panic+0x1e5 sys/kern/subr_prf.c:198 ufs_dirbadentry(ffff80003c46cc88,ffff80003c46cc88,6696078d526a971a) at ufs_dirbadentry VOP_LOOKUP(fffffd800b033798,ffff80003c46ce58,ffff80003c46ce88) at VOP_LOOKUP+0x6e sys/kern/vfs_vops.c:85 vfs_lookup(ffff80003c46ce28) at vfs_lookup+0x8fa sys/kern/vfs_lookup.c:566 namei(ffff80003c46ce28) at namei+0x7aa sys/kern/vfs_lookup.c:250 sys_unveil(ffff80003c4519c8,ffff80003c46d010,ffff80003c46cf60) at sys_unveil+0x329 sys/kern/vfs_syscalls.c:1009 syscall(ffff80003c46d010) at syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c46d010) at syscall+0xb08 sys/arch/amd64/amd64/trap.c:579 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x1f33bf555e0, 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_x86.c:1218 sched_idle(ffff8000299ddff0) at sched_idle+0x4d8 sys/kern/kern_sched.c:191 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_x86.c:1218 sched_idle(ffff8000299ddff0) at sched_idle+0x4d8 sys/kern/kern_sched.c:191 end trace frame: 0x0, count: -5