Commit 8371d74d authored Feb 28, 2021 by Miles Chen

[ALPS05475898] mm/page_owner: avoid use un-initialized data



Avoid using un-initialized data (NULL pointer).

Hardware name: Generic DT based system
PC is at show_max_hit_page+0x64/0xd0
LR is at show_max_hit_page+0x48/0xd0
pc : [<c05708e8>]    lr : [<c05708cc>]    psr: 600b0093
sp : de573ce0  ip : 00000000  fp : de573d48
r10: f0000080  r9 : c17e0fe8  r8 : c17e0f88
r7 : 00000000  r6 : c160a1c8  r5 : 600b0013  r4 : c17f61a4
r3 : c17ee1a4  r2 : 00003ff0  r1 : c17f61a4  r0 : 00000000

MTK-Commit-Id: a8cde2fde0292d894727b112443eec3958480e84

Change-Id: I41c601915701f0ddad6ae25f311524921267788f
CR-Id: ALPS05475898
Signed-off-by: Miles Chen <miles.chen@mediatek.com>
Feature: [Module]Official Kernel Patch

parent a8064dab

lib/stackdepot.c

+5 −3

Original line number	Diff line number	Diff line
		@@ -250,9 +250,11 @@ void show_max_hit_page(void)
		.skip = 0
		};
		spin_lock_irqsave(&max_found_lock, flags);
		if (max_found) {
		depot_fetch_stack(max_found->handle.handle, &trace);
		pr_info("max found hit=%d\n", max_found->hit);
		print_stack_trace(&trace, 2);
		}
		spin_unlock_irqrestore(&max_found_lock, flags);
		}
		#endif