login: panic: missing alias Stopped at db_enter+0x25: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND *174977 27128 0 0x2 0 0 syz-executor db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff832f0221) at panic+0x1cf sys/kern/subr_prf.c:198 vgonel(fffffd806756b958,ffff80002a786538) at vgonel+0x663 vrecycle(fffffd806756b958,ffff80002a786538) at vrecycle+0x7c sys/kern/vfs_subr.c:1137 ufs_inactive(ffff80002a8f5980) at ufs_inactive+0x359 sys/ufs/ufs/ufs_inode.c:107 VOP_INACTIVE(fffffd806756b958,ffff80002a786538) at VOP_INACTIVE+0xfb sys/kern/vfs_vops.c:498 vput(fffffd806756b958) at vput+0xdc sys/kern/vfs_subr.c:790 VOP_REMOVE(fffffd806aae1878,fffffd806756b958,ffff80002a8f5ae8) at VOP_REMOVE+0x199 sys/kern/vfs_vops.c:336 dounlinkat(ffff80002a786538,ffffff9c,75d5c51ea360,0) at dounlinkat+0x1c4 sys/kern/vfs_syscalls.c:1904 syscall(ffff80002a8f5c50) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80002a8f5c50) at syscall+0x962 sys/arch/amd64/amd64/trap.c:765 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x75d5c51ea810, count: 4 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: missing alias ddb> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff832f0221) at panic+0x1cf sys/kern/subr_prf.c:198 vgonel(fffffd806756b958,ffff80002a786538) at vgonel+0x663 vrecycle(fffffd806756b958,ffff80002a786538) at vrecycle+0x7c sys/kern/vfs_subr.c:1137 ufs_inactive(ffff80002a8f5980) at ufs_inactive+0x359 sys/ufs/ufs/ufs_inode.c:107 VOP_INACTIVE(fffffd806756b958,ffff80002a786538) at VOP_INACTIVE+0xfb sys/kern/vfs_vops.c:498 vput(fffffd806756b958) at vput+0xdc sys/kern/vfs_subr.c:790 VOP_REMOVE(fffffd806aae1878,fffffd806756b958,ffff80002a8f5ae8) at VOP_REMOVE+0x199 sys/kern/vfs_vops.c:336 dounlinkat(ffff80002a786538,ffffff9c,75d5c51ea360,0) at dounlinkat+0x1c4 sys/kern/vfs_syscalls.c:1904 syscall(ffff80002a8f5c50) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80002a8f5c50) at syscall+0x962 sys/arch/amd64/amd64/trap.c:765 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x75d5c51ea810, count: -11 ddb> show registers rdi 0 rsi 0x1 rbp 0xffff80002a8f57c0 rbx 0xfffffd806756b958 rdx 0 rcx 0 rax 0xffff80002a786538 r8 0x101010101010101 r9 0x8080808080808080 r10 0xc829b72f4876c9ef r11 0xeb80779a9117e61f r12 0 r13 0x2909 __ALIGN_SIZE+0x1909 r14 0 r15 0x1 rip 0xffffffff832540c5 db_enter+0x25 cs 0x8 rflags 0x246 rsp 0xffff80002a8f57b0 ss 0 db_enter+0x25: addq $0x8,%rsp ddb> show proc PROC (syz-executor) tid=174977 pid=27128 tcnt=1 stat=onproc flags process=2 proc=0 runpri=17, usrpri=50, slppri=17, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff80002a786a68,0xffff80003c94bcb8 process=0xffff80002a7eed10 user=0xffff80002a8f0000, vmspace=0xfffffd807651a2e8 estcpu=36, cpticks=10, pctcpu=0.0, user=0, sys=10, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 40574 282267 57677 0 2 0 syz-executor 40574 25715 57677 0 2 0x4000000 syz-executor 40574 27986 57677 0 2 0x4000000 syz-executor 25975 369973 97564 0 2 0 syz-executor 25975 483018 97564 0 3 0x4000080 ttyout syz-executor 25975 327257 97564 0 3 0x4000080 ttyout syz-executor 2625 431011 61109 0 2 0 syz-executor 2625 155599 61109 0 3 0x4000080 fsleep syz-executor 35731 495260 78913 0 2 0 syz-executor 35731 206854 78913 0 3 0x4000080 msgwait syz-executor 35731 197540 78913 0 2 0x4000000 syz-executor 29064 344989 64613 0 2 0 syz-executor 29064 119541 64613 0 3 0x4000000 vmmaplk syz-executor 29064 245604 64613 0 3 0x4000000 inode syz-executor 29064 260464 64613 0 3 0x4000000 inode syz-executor 29064 40379 64613 0 3 0x4000000 fltagain2 syz-executor 29064 277000 64613 0 3 0x4000000 inode syz-executor 29064 495667 64613 0 3 0x4000080 pipeiolk syz-executor 29064 401223 64613 0 2 0x4000000 syz-executor 57677 50158 9442 0 3 0x82 nanoslp syz-executor 96868 40149 1 0 3 0x100083 ttyin getty 5460 472939 0 0 3 0x14200 acct acct 93213 117385 0 0 3 0x14280 nfsidl nfsio 43825 44057 0 0 3 0x14280 nfsidl nfsio 77830 437890 0 0 3 0x14280 nfsidl nfsio 71046 441120 0 0 3 0x14280 nfsidl nfsio 72657 322422 0 0 3 0x14280 nfsidl nfsio 90297 390418 0 0 3 0x14280 nfsidl nfsio 54414 453280 0 0 3 0x14280 nfsidl nfsio 15152 137982 0 0 3 0x14280 nfsidl nfsio 50712 2798 0 0 3 0x14280 nfsidl nfsio 64589 182519 0 0 3 0x14280 nfsidl nfsio 31576 258278 0 0 3 0x14280 nfsidl nfsio 13794 83695 0 0 3 0x14280 nfsidl nfsio 10204 68885 0 0 3 0x14280 nfsidl nfsio 57308 314017 0 0 3 0x14280 nfsidl nfsio 55049 476094 0 0 3 0x14280 nfsidl nfsio 85423 246543 0 0 3 0x14280 nfsidl nfsio 14806 52137 0 0 3 0x14280 nfsidl nfsio 49784 242755 0 0 3 0x14280 nfsidl nfsio 90197 270301 0 0 3 0x14280 nfsidl nfsio 34625 362723 0 0 3 0x14280 nfsidl nfsio *27128 174977 9442 0 7 0x2 syz-executor 78913 33631 9442 0 3 0x82 nanoslp syz-executor 42484 249653 9442 0 2 0x2 syz-executor 64613 378061 9442 0 3 0x82 nanoslp syz-executor 27306 233753 9442 0 2 0x2 syz-executor 61109 454890 9442 0 3 0x82 nanoslp syz-executor 97564 453155 9442 0 3 0x82 nanoslp syz-executor 9442 102801 5736 0 2 0x2 syz-executor 5736 214007 71366 0 3 0x10008a sigsusp ksh 71366 21950 18424 0 3 0x98 kqread sshd-session 18424 492129 43002 0 3 0x92 kqread sshd-session 43002 515423 1 0 3 0x88 kqread sshd 98757 180121 4265 73 3 0x1100090 kqread syslogd 4265 62322 1 0 3 0x100082 sbwait syslogd 45220 452661 1 0 3 0x100080 kqread resolvd 18302 472987 0 0 3 0x14200 bored smr 56607 397695 0 0 2 0x14200 zerothread 59243 97894 0 0 3 0x14200 aiodoned aiodoned 52004 272304 0 0 3 0x14200 syncer update 2888 263763 0 0 3 0x14200 cleaner cleaner 41584 290010 0 0 3 0x14200 reaper reaper 47130 182835 0 0 3 0x14200 pgdaemon pagedaemon 75260 406291 0 0 3 0x14200 bored viomb 38452 199160 0 0 3 0x40014200 acpi0 acpi0 92180 502587 0 0 3 0x14200 bored softnet0 14809 266394 0 0 3 0x14200 bored systqmp 44222 196312 0 0 3 0x14200 bored systq 97668 67040 0 0 3 0x40014200 tmoslp softclock 17146 448771 0 0 3 0x40014200 idle0 1 56184 0 0 3 0x82 wait init 0 0 -1 0 3 0x10010200 scheduler swapper ddb> show all locks No such command ddb> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10168 11045K 11209K 166960K 11854 0 pcb 17 16K 18K 166960K 340 0 rtable 220 9K 10K 166960K 588 0 pf 29 12K 19K 166960K 135 0 ifaddr 36 6K 8K 166960K 95 0 ifgroup 46 2K 2K 166960K 151 0 sysctl 4 1K 9K 166960K 21 0 counters 31 17K 18K 166960K 84 0 ioctlops 0 0K 4K 166960K 194 0 iov 0 0K 24K 166960K 67 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1398 88K 89K 166960K 2081 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 2K 6K 166960K 22 0 VM map 2 1K 1K 166960K 2 0 sem 22 3K 3K 166960K 34 0 dirhash 12 2K 2K 166960K 18 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 17 61K 110K 166960K 1085 0 sigio 0 0K 0K 166960K 18 0 proc 54 43K 124K 166960K 614 0 subproc 72 4K 4K 166960K 81 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 89 0 in_multi 80 6K 7K 166960K 164 0 ether_multi 1 0K 0K 166960K 19 0 mrt 1 0K 0K 166960K 14 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 103 466K 466K 166960K 103 0 exec 0 0K 2K 166960K 587 0 fusefs mount 1 32K 32K 166960K 1 0 pfkey data 0 0K 0K 166960K 2 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 189 133K 175K 166960K 11737 0 UVM aobj 21 2K 4K 166960K 25 0 pinsyscall 32 64K 96K 166960K 2180 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 83 0 NDP 10 0K 2K 166960K 64 0 temp 67 8648K 8723K 166960K 37708 0 kqueue 7 12K 31K 166960K 239 0 SYN cache 2 16K 16K 166960K 2 0 ddb> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle rtpcb 120 109 0 106 1 0 1 1 0 8 0 rtentry 136 155 0 71 4 0 4 4 0 8 0 unpcb 144 587 0 579 2 0 2 2 0 8 1 syncache 336 5 0 5 2 1 1 1 0 8 1 tcpqe 32 2 0 2 2 1 1 1 0 8 1 tcpcb 736 318 0 313 4 0 4 4 0 8 3 arp 96 24 0 8 1 0 1 1 0 8 0 inpcb 328 1255 0 1250 8 1 7 7 0 8 5 ip6q 72 7 0 4 1 0 1 1 0 8 0 ip6af 40 11 0 8 1 0 1 1 0 8 0 nd6 112 31 0 12 1 0 1 1 0 8 0 pkpcb 40 6 0 6 1 0 1 1 0 8 1 kcovpl 48 9 0 1 1 0 1 1 0 8 0 mppekey 1024 1 0 1 1 0 1 1 0 8 1 ppxss 1072 40 0 40 2 1 1 1 0 8 1 pppxif 1384 5 0 5 1 0 1 1 0 8 1 pfrktable 1344 2 0 2 1 0 1 1 0 8 1 pfanchor 1288 2 0 0 1 0 1 1 0 8 0 pfrule 1344 1 0 0 1 0 1 1 0 8 0 rttmr 136 3 0 3 1 0 1 1 0 8 1 art_heap8 4096 5 0 0 5 0 5 5 0 8 0 art_heap4 256 741 0 378 34 2 32 32 0 8 8 art_table 40 746 0 378 6 0 6 6 0 8 1 art_node 32 154 0 80 1 0 1 1 0 8 0 sysvmsgpl 40 7 0 3 1 0 1 1 0 8 0 semupl 112 1 0 1 1 0 1 1 0 8 1 semapl 112 27 0 7 1 0 1 1 0 8 0 shmpl 112 22 0 4 1 0 1 1 0 8 0 dirhash 1024 21 0 4 3 0 3 3 0 8 0 dino2pl 256 3382 0 1881 95 0 95 95 0 8 0 ffsino 256 3382 0 1881 95 0 95 95 0 8 0 nchpl 144 4966 0 3276 64 0 64 64 0 8 0 rtmask 32 8 0 8 2 1 1 1 0 8 1 vnodes 216 3797 0 0 211 0 211 211 0 8 0 namei 1024 15696 0 15693 4 2 2 2 0 8 1 kstatmem 264 90 0 70 3 1 2 3 0 8 0 scsiplug 72 8 0 8 1 0 1 1 0 8 1 scxspl 216 18748 0 18748 10 2 8 8 1 8 8 plimitpl 152 199 0 183 1 0 1 1 0 8 0 sigapl 424 1386 0 1326 9 1 8 8 0 8 0 knotepl 120 53404 0 53373 38 28 10 18 0 8 7 kqueuepl 184 469 0 463 5 1 4 4 0 8 3 pipepl 304 306 0 278 5 0 5 5 0 8 2 fdescpl 448 1350 0 1324 5 1 4 5 0 8 0 filepl 120 8179 0 7983 11 0 11 11 0 8 3 lockfpl 104 355 0 354 1 0 1 1 0 8 0 lockfspl 48 147 0 146 1 0 1 1 0 8 0 sessionpl 144 26 0 19 1 0 1 1 0 8 0 pgrppl 48 56 0 41 1 0 1 1 0 8 0 ucredpl 104 1052 0 1043 1 0 1 1 0 8 0 zombiepl 144 1855 0 1855 1 0 1 1 0 8 1 processpl 1152 1386 0 1326 5 0 5 5 0 8 0 procpl 664 2983 0 2909 9 0 9 9 0 8 2 sosppl 176 2 0 2 1 0 1 1 0 8 1 sockpl 552 1978 0 1962 8 0 8 8 0 8 5 mcl64k 65536 83 0 83 2 1 1 1 0 8 1 mcl16k 16384 2 0 2 2 1 1 1 0 8 1 mcl9k 9216 4 0 4 1 0 1 1 0 8 1 mcl8k 8192 11 0 11 2 1 1 1 0 8 1 mcl4k 4096 3783 0 3731 15 7 8 15 0 8 1 mcl2k 2048 1733 0 1725 10 4 6 6 0 8 4 mtagpl 96 8 0 7 1 0 1 1 0 8 0 mbufpl 256 17284 0 17146 129 106 23 75 0 8 8 bufpl 280 9248 0 3026 445 0 445 445 0 8 0 anonpl 24 217871 0 212353 57 10 47 47 0 187 7 amapchunkpl 152 39631 0 39230 41 5 36 36 0 158 16 amappl16 200 4114 0 3909 27 10 17 17 0 8 5 amappl15 192 6 0 6 1 1 0 1 0 8 0 amappl14 184 54 0 54 2 1 1 1 0 8 1 amappl13 176 426 0 425 1 0 1 1 0 8 0 amappl12 168 1704 0 1673 2 0 2 2 0 8 0 amappl11 160 8 0 8 1 1 0 1 0 8 0 amappl10 152 43 0 39 1 0 1 1 0 8 0 amappl9 144 251 0 249 1 0 1 1 0 8 0 amappl8 136 23 0 22 1 0 1 1 0 8 0 amappl7 128 103 0 102 1 0 1 1 0 8 0 amappl6 120 281 0 273 1 0 1 1 0 8 0 amappl5 112 72 0 67 1 0 1 1 0 8 0 amappl4 104 393 0 372 1 0 1 1 0 8 0 amappl3 96 6737 0 6662 3 0 3 3 0 8 0 amappl2 88 1481 0 1427 2 0 2 2 0 8 0 amappl1 80 13306 0 12867 13 0 13 13 0 8 1 amappl 88 10805 0 10666 5 0 5 5 0 92 0 uvmvnodes 80 3797 0 0 78 0 78 78 0 8 0 dma65536 65536 1 0 1 1 0 1 1 0 8 1 dma4096 4096 2 0 2 2 1 1 1 0 8 1 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 2 1 1 1 0 8 1 dma64 64 7 0 7 2 1 1 1 0 8 1 dma32 32 7 0 7 1 1 0 1 0 8 0 dma16 16 20 0 19 1 0 1 1 0 8 0 aobjpl 72 24 0 4 1 0 1 1 0 8 0 uaddrrnd 24 1350 0 1324 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1350 0 1324 1 0 1 1 0 8 0 vmmpekpl 168 12455 0 12423 3 0 3 3 0 8 0 vmmpepl 168 91232 0 89572 90 4 86 86 0 357 4 vmsppl 368 1349 0 1324 4 1 3 4 0 8 0 rwobjpl 40 29503 0 24819 49 0 49 49 0 8 0 pdppl 4096 2706 0 2648 100 40 60 82 0 8 2 pvpl 32 604505 0 594519 137 25 112 112 0 265 15 pmappl 216 1349 0 1324 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 517 0 169 12 0 12 12 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff832f0221) at panic+0x1cf sys/kern/subr_prf.c:198 vgonel(fffffd806756b958,ffff80002a786538) at vgonel+0x663 vrecycle(fffffd806756b958,ffff80002a786538) at vrecycle+0x7c sys/kern/vfs_subr.c:1137 ufs_inactive(ffff80002a8f5980) at ufs_inactive+0x359 sys/ufs/ufs/ufs_inode.c:107 VOP_INACTIVE(fffffd806756b958,ffff80002a786538) at VOP_INACTIVE+0xfb sys/kern/vfs_vops.c:498 vput(fffffd806756b958) at vput+0xdc sys/kern/vfs_subr.c:790 VOP_REMOVE(fffffd806aae1878,fffffd806756b958,ffff80002a8f5ae8) at VOP_REMOVE+0x199 sys/kern/vfs_vops.c:336 dounlinkat(ffff80002a786538,ffffff9c,75d5c51ea360,0) at dounlinkat+0x1c4 sys/kern/vfs_syscalls.c:1904 syscall(ffff80002a8f5c50) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80002a8f5c50) at syscall+0x962 sys/arch/amd64/amd64/trap.c:765 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x75d5c51ea810, count: -11 ddb> machine ddbcpu 1 No such command ddb> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff832f0221) at panic+0x1cf sys/kern/subr_prf.c:198 vgonel(fffffd806756b958,ffff80002a786538) at vgonel+0x663 vrecycle(fffffd806756b958,ffff80002a786538) at vrecycle+0x7c sys/kern/vfs_subr.c:1137 ufs_inactive(ffff80002a8f5980) at ufs_inactive+0x359 sys/ufs/ufs/ufs_inode.c:107 VOP_INACTIVE(fffffd806756b958,ffff80002a786538) at VOP_INACTIVE+0xfb sys/kern/vfs_vops.c:498 vput(fffffd806756b958) at vput+0xdc sys/kern/vfs_subr.c:790 VOP_REMOVE(fffffd806aae1878,fffffd806756b958,ffff80002a8f5ae8) at VOP_REMOVE+0x199 sys/kern/vfs_vops.c:336 dounlinkat(ffff80002a786538,ffffff9c,75d5c51ea360,0) at dounlinkat+0x1c4 sys/kern/vfs_syscalls.c:1904 syscall(ffff80002a8f5c50) at syscall+0x962 mi_syscall sys/sys/syscall_mi.h:-1 [inline] syscall(ffff80002a8f5c50) at syscall+0x962 sys/arch/amd64/amd64/trap.c:765 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x75d5c51ea810, count: -11