panic: bad dir Stopped at db_enter+0x25: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND *399106 38859 0 0x2000 0x4000000 0K syz-executor db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff83383f0d) at panic+0x1e5 sys/kern/subr_prf.c:198 ufs_dirbadentry(ffff80002a325c38,ffff80002a325c38,7a4a78c25ed04a8e) at ufs_dirbadentry VOP_LOOKUP(fffffd8009eeb510,ffff80002a325e08,ffff80002a325e38) at VOP_LOOKUP+0x6e sys/kern/vfs_vops.c:85 vfs_lookup(ffff80002a325dd8) at vfs_lookup+0x8fa sys/kern/vfs_lookup.c:566 namei(ffff80002a325dd8) at namei+0x7aa sys/kern/vfs_lookup.c:250 sys_unveil(ffff8000ffff1c50,ffff80002a325fc0,ffff80002a325f10) at sys_unveil+0x329 sys/kern/vfs_syscalls.c:1009 syscall(ffff80002a325fc0) at syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002a325fc0) at syscall+0xb08 sys/arch/amd64/amd64/trap.c:579 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x1ab82c4aff0, 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(ffffffff83383f0d) at panic+0x1e5 sys/kern/subr_prf.c:198 ufs_dirbadentry(ffff80002a325c38,ffff80002a325c38,7a4a78c25ed04a8e) at ufs_dirbadentry VOP_LOOKUP(fffffd8009eeb510,ffff80002a325e08,ffff80002a325e38) at VOP_LOOKUP+0x6e sys/kern/vfs_vops.c:85 vfs_lookup(ffff80002a325dd8) at vfs_lookup+0x8fa sys/kern/vfs_lookup.c:566 namei(ffff80002a325dd8) at namei+0x7aa sys/kern/vfs_lookup.c:250 sys_unveil(ffff8000ffff1c50,ffff80002a325fc0,ffff80002a325f10) at sys_unveil+0x329 sys/kern/vfs_syscalls.c:1009 syscall(ffff80002a325fc0) at syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002a325fc0) at syscall+0xb08 sys/arch/amd64/amd64/trap.c:579 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x1ab82c4aff0, count: -9 ddb{0}> show registers rdi 0 rsi 0x1 rbp 0xffff80002a325a60 rbx 0xffffffff8381bdd7 cpu_info_full_primary+0x2dd7 rdx 0xffff80000145dc40 rcx 0xffff8000ffff1c50 rax 0xffffffff8381aff0 cpu_info_full_primary+0x1ff0 r8 0x101010101010101 r9 0x8080808080808080 r10 0xab6fc98932910cfc r11 0xffab5a521fd7be50 r12 0xffffffff8381bbd8 cpu_info_full_primary+0x2bd8 r13 0 r14 0 r15 0x1 rip 0xffffffff811ff075 db_enter+0x25 cs 0x8 rflags 0x246 rsp 0xffff80002a325a50 ss 0 db_enter+0x25: addq $0x8,%rsp ddb{0}> show proc PROC (syz-executor) tid=399106 pid=38859 tcnt=4 stat=onproc flags process=2000 proc=4000000 runpri=17, usrpri=85, slppri=17, nice=20 wchan=0x0, wmesg=, ps_single=0xffff8000ffff1c50 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff8000ffff0a60,0xffff80002a2a5738 process=0xffff8000343da130 user=0xffff80002a321000, vmspace=0xfffffd805f39c028 estcpu=35, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 37271 341937 54625 0 2 0 syz-executor 37271 487744 54625 0 3 0x4000080 fsleep syz-executor 62274 522837 29761 0 2 0 syz-executor 62274 147926 29761 0 3 0x4000080 fsleep syz-executor 24045 173156 64139 0 2 0 syz-executor 24045 103362 64139 0 3 0x4000080 fsleep syz-executor 24045 467935 64139 0 3 0x4000080 fsleep syz-executor 9527 228984 10036 0 2 0 syz-executor 9527 151903 10036 0 3 0x4000080 ttyout syz-executor 60524 165460 82328 0 2 0 syz-executor 60524 187266 82328 0 2 0x4000000 syz-executor 60524 72635 82328 0 2 0x4000000 syz-executor 38859 453973 20549 0 4 0x82000 syz-executor *38859 399106 20549 0 7 0x4002000 syz-executor 38859 92862 20549 0 4 0x4082000 syz-executor 38859 493660 20549 0 4 0x4082000 syz-executor 95641 482558 0 0 3 0x14200 acct acct 40635 245966 9173 0 2 0x2 syz-executor 60702 117298 1 0 3 0x100083 ttyopn getty 54625 304438 9173 0 3 0x82 nanoslp syz-executor 29761 29277 9173 0 3 0x82 nanoslp syz-executor 7652 253834 9173 0 2 0x2 syz-executor 30667 41204 0 0 3 0x14200 bored sosplice 82328 513740 9173 0 2 0xc82 syz-executor 64139 480336 9173 0 3 0x82 nanoslp syz-executor 20549 146480 9173 0 2 0xc82 syz-executor 10036 314652 9173 0 2 0xc82 syz-executor 9173 280005 5460 0 3 0x82 kqread syz-executor 5460 434896 84690 0 3 0x10008a sigsusp ksh 84690 511538 37814 0 3 0x98 kqread sshd-session 37814 360437 13894 0 3 0x92 kqread sshd-session 13894 111103 1 0 3 0x88 kqread sshd 26746 94570 5765 74 3 0x1100092 bpf pflogd 5765 420350 1 0 3 0x80 sbwait pflogd 53126 335753 90283 73 3 0x1100090 kqread syslogd 90283 415059 1 0 3 0x100082 sbwait syslogd 91620 286825 1 0 3 0x100080 kqread resolvd 37362 201223 1324 77 3 0x100092 kqread dhcpleased 40520 164907 1324 77 3 0x100092 kqread dhcpleased 1324 309165 1 0 3 0x80 kqread dhcpleased 3987 39112 0 0 3 0x14200 bored smr 41667 485852 0 0 2 0x14200 zerothread 46403 235667 0 0 3 0x14200 aiodoned aiodoned 31151 59871 0 0 3 0x14200 syncer update 61172 277062 0 0 3 0x14200 cleaner cleaner 49275 506242 0 0 3 0x14200 reaper reaper 63354 63086 0 0 3 0x14200 pgdaemon pagedaemon 90576 431667 0 0 3 0x14200 bored viomb 37054 97513 0 0 3 0x40014200 acpi0 acpi0 93904 21595 0 0 7 0x40014200 idle1 91526 136769 0 0 3 0x14200 bored softnet3 9544 221040 0 0 3 0x14200 bored softnet2 72702 255936 0 0 3 0x14200 bored softnet1 83067 55254 0 0 3 0x14200 bored softnet0 13806 71113 0 0 3 0x14200 bored systqmp 40261 43468 0 0 3 0x14200 bored systq 63937 180381 0 0 3 0x14200 tmoslp softclockmp 19613 397197 0 0 2 0x40014200 softclock 70965 235328 0 0 3 0x40014200 idle0 1 337443 0 0 3 0x80082 wait init 0 0 -1 0 3 0x10010200 scheduler swapper ddb{0}> show all locks Process 9527 (syz-executor) thread 0xffff8000ffff19c0 (228984) Process 60524 (syz-executor) thread 0xffff80003c454d00 (187266) Process 38859 (syz-executor) thread 0xffff8000ffff1c50 (399106) Process 40635 (syz-executor) thread 0xffff8000ffff1210 (245966) Process 7652 (syz-executor) thread 0xffff8000ffff0020 (253834) ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10244 11315K 11631K 166960K 16750 0 pcb 17 16K 24K 166960K 530 0 rtable 249 13K 14K 166960K 820 0 pf 38 18K 22K 166960K 256 0 ifaddr 42 8K 8K 166960K 138 0 ifgroup 55 2K 2K 166960K 220 0 sysctl 4 1K 9K 166960K 21 0 counters 68 36K 38K 166960K 354 0 ioctlops 0 0K 6K 166960K 1928 0 iov 0 0K 16K 166960K 144 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1460 92K 93K 166960K 4650 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 3 5K 9K 166960K 34 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 1K 166960K 255 0 dirhash 12 2K 2K 166960K 36 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 16 57K 93K 166960K 2338 0 sigio 0 0K 0K 166960K 108 0 proc 73 91K 140K 166960K 1025 0 subproc 72 4K 4K 166960K 126 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 1 0K 0K 166960K 224 0 in_multi 93 7K 7K 166960K 236 0 ether_multi 2 0K 0K 166960K 9 0 mrt 2 0K 0K 166960K 9 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 0 0K 1K 166960K 923 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 248 177K 191K 166960K 23945 0 UVM aobj 91 5K 6K 166960K 96 0 pinsyscall 41 82K 106K 166960K 3693 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 1K 166960K 101 0 NDP 12 0K 2K 166960K 97 0 temp 78 8684K 8764K 166960K 80393 0 kqueue 14 22K 30K 166960K 365 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 120 254 0 251 3 2 1 3 0 8 0 rtentry 176 237 0 135 6 0 6 6 0 8 0 unpcb 144 1708 0 1691 18 17 1 4 0 8 0 syncache 336 18 0 18 10 9 1 1 0 8 1 tcpqe 32 16 0 16 8 8 0 1 0 8 0 tcpcb 808 1120 0 1113 44 42 2 14 0 8 0 arp 128 38 0 19 1 0 1 1 0 8 0 inpcb 384 2781 0 2770 70 68 2 18 0 8 0 nd6 144 52 0 29 1 0 1 1 0 8 0 pkpcb 40 31 0 31 6 5 1 1 0 8 1 kcovpl 48 14 0 6 1 0 1 1 0 8 0 mppekey 1024 2 0 2 2 2 0 1 0 8 0 ppxss 1192 123 0 123 7 6 1 1 0 8 1 pppxif 1504 70 0 70 6 5 1 1 0 8 1 pfstscr 40 3 0 3 1 1 0 1 0 8 0 pffrag 232 14 0 11 1 0 1 1 0 482 0 pffrnode 88 13 0 10 1 0 1 1 0 8 0 pffrent 40 32 0 29 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 pfrktable 1344 10 0 7 1 0 1 1 0 8 0 pfanchor 1288 2 0 0 1 0 1 1 0 8 0 pftag 88 2 0 1 1 0 1 1 0 8 0 pfstitem 24 127 0 92 1 0 1 1 0 8 0 pfstkey 128 129 0 94 2 0 2 2 0 8 0 pfstate 384 129 0 94 6 1 5 5 0 8 0 pfrule 1344 37 0 26 3 2 1 2 0 8 0 rttmr 136 3 0 3 2 2 0 1 0 8 0 art_heap8 4096 4 0 0 4 0 4 4 0 8 0 art_heap4 256 1005 0 590 40 12 28 30 0 8 0 art_table 32 1009 0 590 4 0 4 4 0 8 0 art_node 16 229 0 137 1 0 1 1 0 8 0 sysvmsgpl 40 20 0 14 1 0 1 1 0 8 0 semupl 112 3 0 3 2 2 0 1 0 8 0 semapl 112 247 0 237 1 0 1 1 0 8 0 shmpl 112 93 0 5 3 0 3 3 0 8 0 dirhash 1024 34 0 17 3 0 3 3 0 8 0 dino2pl 256 5736 0 4225 95 0 95 95 0 8 0 ffsino 288 5737 0 4225 109 0 109 109 0 8 0 nchpl 144 8969 0 7263 64 0 64 64 0 8 0 rtmask 32 15 0 15 5 5 0 1 0 8 0 uvmvnodes 80 5926 0 0 121 0 121 121 0 8 0 vnodes 216 5926 0 0 330 0 330 330 0 8 0 namei 1024 33057 0 33054 6 5 1 3 0 8 0 percpumem 16 192 0 143 1 0 1 1 0 8 0 pfiaddrpl 120 4 0 2 1 0 1 1 0 8 0 kstatmem 264 136 0 110 4 1 3 3 0 8 1 scsiplug 72 10 0 10 5 5 0 1 0 8 0 scxspl 216 26205 0 26205 13 11 2 7 1 8 2 plimitpl 152 621 0 603 1 0 1 1 0 8 0 sigapl 424 2680 0 2630 10 3 7 9 0 8 0 knotepl 120 555 0 0 17 0 17 17 0 8 0 kqueuepl 224 835 0 823 8 7 1 5 0 8 0 pipepl 336 330 0 303 3 0 3 3 0 8 0 fdescpl 520 2634 0 2604 3 0 3 3 0 8 0 filepl 160 19089 0 18868 38 25 13 25 0 8 1 lockfpl 104 750 0 747 2 1 1 2 0 8 0 lockfspl 48 242 0 239 1 0 1 1 0 8 0 sessionpl 144 47 0 38 1 0 1 1 0 8 0 pgrppl 48 78 0 61 1 0 1 1 0 8 0 ucredpl 104 3100 0 3087 1 0 1 1 0 8 0 zombiepl 144 3966 0 3966 2 1 1 1 0 8 1 processpl 1208 2680 0 2630 6 0 6 6 0 8 0 procpl 656 6467 0 6407 10 4 6 8 0 8 0 srpgc 96 17 0 17 6 6 0 1 0 8 0 sosppl 168 8 0 8 6 5 1 1 0 8 1 sockpl 728 4956 0 4925 57 51 6 18 0 8 2 mcl64k 65536 6 0 0 1 0 1 1 0 8 0 mcl16k 16384 2 0 0 1 0 1 1 0 8 0 mcl12k 12288 1 0 0 1 0 1 1 0 8 0 mcl9k 9216 1 0 0 1 0 1 1 0 8 0 mcl8k 8192 4 0 0 1 0 1 1 0 8 0 mcl4k 4096 125 0 0 16 0 16 16 0 8 0 mcl2k 2048 32 0 0 4 0 4 4 0 8 0 mtagpl 96 143 0 0 3 0 3 3 0 8 0 mbufpl 256 375 0 0 21 0 21 21 0 8 0 bufpl 280 6588 0 446 439 0 439 439 0 8 0 anonpl 32 10696 0 0 86 0 86 86 0 246 0 amapchunkpl 152 79778 0 79200 53 26 27 31 0 158 1 amappl16 200 4888 0 4753 48 29 19 19 0 8 5 amappl15 192 2 0 2 2 2 0 1 0 8 0 amappl14 184 161 0 148 1 0 1 1 0 8 0 amappl13 176 2 0 2 1 1 0 1 0 8 0 amappl12 168 3412 0 3382 3 1 2 2 0 8 0 amappl11 160 48 0 34 1 0 1 1 0 8 0 amappl10 152 12 0 12 1 1 0 1 0 8 0 amappl9 144 254 0 254 1 1 0 1 0 8 0 amappl8 136 23 0 20 1 0 1 1 0 8 0 amappl7 128 141 0 128 1 0 1 1 0 8 0 amappl6 120 264 0 260 1 0 1 1 0 8 0 amappl5 112 151 0 141 1 0 1 1 0 8 0 amappl4 104 406 0 387 1 0 1 1 0 8 0 amappl3 96 16254 0 16144 5 1 4 4 0 8 0 amappl2 88 860 0 796 2 0 2 2 0 8 0 amappl1 80 21274 0 20670 21 6 15 15 0 8 0 amappl 88 22656 0 22483 5 0 5 5 0 92 0 dma65536 65536 1 0 1 1 1 0 1 0 8 0 dma16384 16384 33 0 33 1 1 0 1 0 8 0 dma8192 8192 2 0 2 1 1 0 1 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 dma512 512 33 0 33 1 1 0 1 0 8 0 dma256 256 6 0 6 1 1 0 1 0 8 0 dma128 128 255 0 255 2 2 0 1 0 8 0 dma64 64 8 0 8 3 3 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 95 0 5 2 0 2 2 0 8 0 uaddrrnd 24 2634 0 2604 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 2634 0 2604 1 0 1 1 0 8 0 vmmpekpl 168 22389 0 22325 4 0 4 4 0 8 0 vmmpepl 168 170619 0 168526 126 22 104 105 0 357 3 vmsppl 480 2633 0 2604 6 1 5 5 0 8 0 rwobjpl 72 48957 0 41890 136 2 134 134 0 8 2 pdppl 4096 5275 0 5208 145 72 73 85 0 8 6 pvpl 32 17985 0 0 144 0 144 144 0 265 0 pmappl 256 2633 0 2604 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 515 0 148 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(ffffffff83383f0d) at panic+0x1e5 sys/kern/subr_prf.c:198 ufs_dirbadentry(ffff80002a325c38,ffff80002a325c38,7a4a78c25ed04a8e) at ufs_dirbadentry VOP_LOOKUP(fffffd8009eeb510,ffff80002a325e08,ffff80002a325e38) at VOP_LOOKUP+0x6e sys/kern/vfs_vops.c:85 vfs_lookup(ffff80002a325dd8) at vfs_lookup+0x8fa sys/kern/vfs_lookup.c:566 namei(ffff80002a325dd8) at namei+0x7aa sys/kern/vfs_lookup.c:250 sys_unveil(ffff8000ffff1c50,ffff80002a325fc0,ffff80002a325f10) at sys_unveil+0x329 sys/kern/vfs_syscalls.c:1009 syscall(ffff80002a325fc0) at syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002a325fc0) at syscall+0xb08 sys/arch/amd64/amd64/trap.c:579 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x1ab82c4aff0, 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+0x4f8 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+0x4f8 sys/kern/kern_sched.c:182 end trace frame: 0x0, count: -5