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Blackfin: fix bug found by traps test case 21 

The traps test case 21 "exception 0x3f: l1_instruction_access" would make
the kernel panic on BF533's because we end up calling show_stack()
infinitely.

Signed-off-by: Graf Yang <graf.yang@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
hifive-unleashed-5.1
Graf Yang 2009-04-20 09:20:58 +00:00 committed by Mike Frysinger
parent 5d89137a17
commit 4b402e3a54
1 changed files with 1 additions and 1 deletions
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2
arch/blackfin/mm/isram-driver.c
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@ -125,7 +125,7 @@ static bool isram_check_addr(const void *addr, size_t n)
{
if ((addr >= (void *)L1_CODE_START) &&
(addr < (void *)(L1_CODE_START + L1_CODE_LENGTH))) {
if ((addr + n) >= (void *)(L1_CODE_START + L1_CODE_LENGTH)) {
if ((addr + n) > (void *)(L1_CODE_START + L1_CODE_LENGTH)) {
show_stack(NULL, NULL);
printk(KERN_ERR "isram_memcpy: copy involving %p length "
"(%zu) too long\n", addr, n);