A-Team_Digital_Solutions/android_kernel_motorola_sm6375
Watch
2
0
Fork
You've already forked android_kernel_motorola_sm6375
 0
mirror of https://github.com/BobTheBlinker/android_kernel_motorola_sm6375.git synced 2026-10-29 03:01:39 -04:00
Code Issues Projects Releases Packages Wiki Activity

net: dccp: fix kernel crash on module load

Browse source 
Patch eedbbb0d98 "net: dccp: initialize (addr,port) ..."
added calling to inet_hashinfo2_init() from dccp_init().

However, inet_hashinfo2_init() is marked as __init(), and
thus the kernel panics when dccp is loaded as module. Removing
__init() tag from inet_hashinfo2_init() is not feasible because
it calls into __init functions in mm.

This patch adds inet_hashinfo2_init_mod() function that can
be called after the init phase is done; changes dccp_init() to
call the new function; un-marks inet_hashinfo2_init() as
exported.

Fixes: eedbbb0d98 ("net: dccp: initialize (addr,port) ...")
Reported-by: kernel test robot <[email protected]>
Signed-off-by: Peter Oskolkov <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
This commit is contained in:
Peter Oskolkov 2018-12-24 12:57:17 -08:00 • committed by David S. Miller
commit c92c81df93
3 changed files with 31 additions and 12 deletions
Download patch file Download diff file Expand all files Collapse all files

36
net/ipv4/inet_hashtables.c
View file

@ -762,13 +762,22 @@ void inet_hashinfo_init(struct inet_hashinfo *h)
}
EXPORT_SYMBOL_GPL(inet_hashinfo_init);
static void init_hashinfo_lhash2(struct inet_hashinfo *h)
{
int i;
for (i = 0; i <= h->lhash2_mask; i++) {
spin_lock_init(&h->lhash2[i].lock);
INIT_HLIST_HEAD(&h->lhash2[i].head);
h->lhash2[i].count = 0;
}
}
void __init inet_hashinfo2_init(struct inet_hashinfo *h, const char *name,
unsigned long numentries, int scale,
unsigned long low_limit,
unsigned long high_limit)
{
unsigned int i;
h->lhash2 = alloc_large_system_hash(name,
sizeof(*h->lhash2),
numentries,
@ -778,14 +787,23 @@ void __init inet_hashinfo2_init(struct inet_hashinfo *h, const char *name,
&h->lhash2_mask,
low_limit,
high_limit);
for (i = 0; i <= h->lhash2_mask; i++) {
spin_lock_init(&h->lhash2[i].lock);
INIT_HLIST_HEAD(&h->lhash2[i].head);
h->lhash2[i].count = 0;
}
init_hashinfo_lhash2(h);
}
EXPORT_SYMBOL_GPL(inet_hashinfo2_init);
int inet_hashinfo2_init_mod(struct inet_hashinfo *h)
{
h->lhash2 = kmalloc_array(INET_LHTABLE_SIZE, sizeof(*h->lhash2), GFP_KERNEL);
if (!h->lhash2)
return -ENOMEM;
h->lhash2_mask = INET_LHTABLE_SIZE - 1;
/* INET_LHTABLE_SIZE must be a power of 2 */
BUG_ON(INET_LHTABLE_SIZE & h->lhash2_mask);
init_hashinfo_lhash2(h);
return 0;
}
EXPORT_SYMBOL_GPL(inet_hashinfo2_init_mod);
int inet_ehash_locks_alloc(struct inet_hashinfo *hashinfo)
{