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Date: Fri, 23 Feb 2018 18:46:41 -0800 From: Matthew Wilcox <willy@...radead.org> To: Chris Mi <chrism@...lanox.com> Cc: Cong Wang <xiyou.wangcong@...il.com>, Khalid Aziz <khalid.aziz@...cle.com>, "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>, "netdev@...r.kernel.org" <netdev@...r.kernel.org> Subject: Re: Fwd: Re: Kernel panic with 4.16-rc1 (and 4.16-rc2) running selftest 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); } /*
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