Re: Fwd: Re: Kernel panic with 4.16-rc1 (and 4.16-rc2) running selftest

From: Chris Mi
Date: Mon Feb 26 2018 - 05:00:10 EST


Hi Matthew,

Sorry for the late response. I'll add the idr test cases for the new APIs ASAP.

Thanks,
Chris

On 2/24/2018 10:46 AM, Matthew Wilcox wrote:
On Sat, Feb 24, 2018 at 01:49:35AM +0000, Chris Mi wrote:
To verify this patch, the following is a sanity test case:

# tc qdisc delete dev $link ingress > /dev/null 2>&1;
# tc qdisc add dev $link ingress;
# tc filter add dev $link prio 1 protocol ip handle 0x80000001 parent ffff: flower skip_hw src_mac e4:11:0:0:0:2 dst_mac e4:12:0:0:0:2 action drop;
# tc filter show dev $link parent ffff:

filter pref 1 flower chain 0
filter pref 1 flower chain 0 handle 0x80000001
I added these tests to my local tree for now.

diff --git a/tools/testing/radix-tree/idr-test.c b/tools/testing/radix-tree/idr-test.c
index 44ef9eba5a7a..28d99325a32d 100644
--- a/tools/testing/radix-tree/idr-test.c
+++ b/tools/testing/radix-tree/idr-test.c
@@ -178,6 +178,29 @@ void idr_get_next_test(int base)
idr_destroy(&idr);
}
+void idr_u32_test(struct idr *idr, int base)
+{
+ assert(idr_is_empty(idr));
+ idr_init_base(idr, base);
+ u32 handle = 10;
+ idr_alloc_u32(idr, NULL, &handle, handle, GFP_KERNEL);
+ BUG_ON(handle != 10);
+ idr_remove(idr, handle);
+ assert(idr_is_empty(idr));
+
+ handle = 0x80000001;
+ idr_alloc_u32(idr, NULL, &handle, handle, GFP_KERNEL);
+ BUG_ON(handle != 0x80000001);
+ idr_remove(idr, handle);
+ assert(idr_is_empty(idr));
+
+ handle = 0xffe00000;
+ idr_alloc_u32(idr, NULL, &handle, handle, GFP_KERNEL);
+ BUG_ON(handle != 0xffe00000);
+ idr_remove(idr, handle);
+ assert(idr_is_empty(idr));
+}
+
void idr_checks(void)
{
unsigned long i;
@@ -248,6 +271,9 @@ void idr_checks(void)
idr_get_next_test(0);
idr_get_next_test(1);
idr_get_next_test(4);
+ idr_u32_test(&idr, 0);
+ idr_u32_test(&idr, 1);
+ idr_u32_test(&idr, 4);
}
/*