panic: vclean: deadlock
Stopped at      db_enter+0x25:  addq    $0x8,%rsp
    TID    PID    UID     PRFLAGS     PFLAGS  CPU  COMMAND
*391237  85521      0   0x8000000  0x4000000    0  syz-executor
db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:437
panic(ffffffff830a8629) at panic+0x1cf sys/kern/subr_prf.c:198
vclean(fffffd806e69ee78,8,ffff80002a4b4010) at vclean+0x482 sys/kern/vfs_subr.c:1065
vgonel(fffffd806e69ee78,ffff80002a4b4010) at vgonel+0xec sys/kern/vfs_subr.c:1197
checkalias(fffffd8060bd80f8,0,ffff800000a68000) at checkalias+0x1ab
ffs_vinit(ffff800000a68000,ffff80003769d780) at ffs_vinit+0x13d
ffs_vget(ffff800000a68000,1fd3c,ffff80003769d868) at ffs_vget+0x421 sys/ufs/ffs/ffs_vfsops.c:1283
ufs_lookup() at ufs_lookup+0x16bc sys/ufs/ufs/ufs_lookup.c:573
VOP_LOOKUP(fffffd8079be8060,ffff80003769dcb8,ffff80003769dce8) at VOP_LOOKUP+0x6e sys/kern/vfs_vops.c:85
vfs_lookup(ffff80003769dc88) at vfs_lookup+0x8e1 sys/kern/vfs_lookup.c:566
namei(ffff80003769dc88) at namei+0x7aa sys/kern/vfs_lookup.c:250
vn_open(ffff80003769dc88,1,0) at vn_open+0x13f sys/kern/vfs_vnops.c:140
doopenat(ffff80002a4b4010,ffffff9c,20000100,0,0,ffff80003769de30) at doopenat+0x31d sys/kern/vfs_syscalls.c:1123
syscall(ffff80003769dee0) at syscall+0x97e sys/arch/amd64/amd64/trap.c:577
end trace frame: 0xffff80003769df60, count: 0
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