panic: inconsistent bufpage counts
Starting stack trace...
panic(ffffffff828f6c07) at panic+0x16f sys/kern/subr_prf.c:229
bufcache_release(fffffd8053a60900) at bufcache_release+0x405 sys/kern/vfs_bio.c:1757
brelse(fffffd8053a60900) at brelse+0x131 sys/kern/vfs_bio.c:927
bwrite(fffffd8053a60900) at bwrite+0x209 sys/kern/vfs_bio.c:772
VOP_BWRITE(fffffd8053a60900) at VOP_BWRITE+0x4e sys/kern/vfs_vops.c:646
ufs_mkdir(ffff80002a4cf590) at ufs_mkdir+0x445 sys/ufs/ufs/ufs_vnops.c:1160
VOP_MKDIR(fffffd8058d78e90,ffff80002a4cf6f0,ffff80002a4cf720,ffff80002a4cf620) at VOP_MKDIR+0xc3 sys/kern/vfs_vops.c:394
domkdirat(ffff80002a156fb8,ffffff9c,7d4c732bd390,1ff) at domkdirat+0x125 sys/kern/vfs_syscalls.c:3104
syscall(ffff80002a4cf8a0) at syscall+0x854 mi_syscall sys/sys/syscall_mi.h:180 [inline]
syscall(ffff80002a4cf8a0) at syscall+0x854 sys/arch/amd64/amd64/trap.c:577
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x7d4c732bd400, count: 247
End of stack trace.