Commit e67b72b9 authored by Muchun Song's avatar Muchun Song Committed by Jakub Kicinski
Browse files

tcp: use alloc_large_system_hash() to allocate table_perturb 



In our server, there may be no high order (>= 6) memory since we reserve
lots of HugeTLB pages when booting.  Then the system panic.  So use
alloc_large_system_hash() to allocate table_perturb.

Fixes: e9261476 ("tcp: dynamically allocate the perturb table used by source ports")
Signed-off-by: default avatarMuchun Song <songmuchun@bytedance.com>
Reviewed-by: default avatarEric Dumazet <edumazet@google.com>
Link: https://lore.kernel.org/r/20220607070214.94443-1-songmuchun@bytedance.com


Signed-off-by: default avatarJakub Kicinski <kuba@kernel.org>
parent 487994ff

net/ipv4/inet_hashtables.c

+6 −4
Original line number Diff line number Diff line
@@ -1026,10 +1026,12 @@ void __init inet_hashinfo2_init(struct inet_hashinfo *h, const char *name, 
	init_hashinfo_lhash2(h);



	/* this one is used for source ports of outgoing connections */

	table_perturb = kmalloc_array(INET_TABLE_PERTURB_SIZE,

				      sizeof(*table_perturb), GFP_KERNEL);

	if (!table_perturb)

		panic("TCP: failed to alloc table_perturb");

	table_perturb = alloc_large_system_hash("Table-perturb",

						sizeof(*table_perturb),

						INET_TABLE_PERTURB_SIZE,

						0, 0, NULL, NULL,

						INET_TABLE_PERTURB_SIZE,

						INET_TABLE_PERTURB_SIZE);

}



int inet_hashinfo2_init_mod(struct inet_hashinfo *h)