syzbot

login: panic: pool_do_get: fdescpl free list modified: page 0xfffffd8008bdb000; item addr 0xfffffd8008bdb5d0; offset 0x48=0xdeaf4153
Starting stack trace...
panic(ffffffff82917ec9) at panic+0x16f sys/kern/subr_prf.c:229
pool_do_get(ffffffff82ebeb98,9,ffff80002bc84638) at pool_do_get+0x484 sys/kern/subr_pool.c:739
pool_get(ffffffff82ebeb98,9) at pool_get+0xed sys/kern/subr_pool.c:582
fdcopy(ffff8000373991e8) at fdcopy+0x48 fdinit sys/kern/kern_descrip.c:1067 [inline]
fdcopy(ffff8000373991e8) at fdcopy+0x48 sys/kern/kern_descrip.c:1106
process_new(ffff800030cf9d58,ffff8000373991e8,1) at process_new+0x390 sys/kern/kern_fork.c:273
fork1(ffff80002a20ad58,1,ffffffff82626e90,0,ffff80002bc84860,0) at fork1+0x318 sys/kern/kern_fork.c:399
syscall(ffff80002bc84910) at syscall+0x533 mi_syscall sys/sys/syscall_mi.h:183 [inline]
syscall(ffff80002bc84910) at syscall+0x533 sys/arch/amd64/amd64/trap.c:577
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x77b8614406b0, count: 249
End of stack trace.