iv/linux
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

cxgb4: avoid accessing registers when clearing filters

Browse Source 
[ Upstream commit 88c380df84fbd03f9b137c2b9d0a44b9f2f553b0 ]

Hardware register having the server TID base can contain
invalid values when adapter is in bad state (for example,
due to AER fatal error). Reading these invalid values in the
register can lead to out-of-bound memory access. So, fix
by using the saved server TID base when clearing filters.

Fixes: b1a79360ee86 ("cxgb4: Delete all hash and TCAM filters before resource cleanup")
Signed-off-by: Raju Rangoju <rajur@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Raju Rangoju 2021-05-19 16:48:31 +05:30 committed by Greg Kroah-Hartman
parent a5212518b7
commit 02f03883fd
1 changed files with 1 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
drivers/net/ethernet/chelsio/cxgb4/cxgb4_filter.c
View File

@ -1042,7 +1042,7 @@ void clear_all_filters(struct adapter *adapter)
cxgb4_del_filter(dev, f->tid, &f->fs);
}
sb = t4_read_reg(adapter, LE_DB_SRVR_START_INDEX_A);
sb = adapter->tids.stid_base;
for (i = 0; i < sb; i++) {
f = (struct filter_entry *)adapter->tids.tid_tab[i];