linux-kernel - Re: [PATCH 2/2] kmemleak-test: add percpu leak

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Message-ID: <Zqj2BBgAIDb623tZ@arm.com>
Date: Tue, 30 Jul 2024 15:17:40 +0100
From: Catalin Marinas <catalin.marinas@....com>
To: Pavel Tikhomirov <ptikhomirov@...tuozzo.com>
Cc: Andrew Morton <akpm@...ux-foundation.org>, linux-mm@...ck.org,
	linux-kernel@...r.kernel.org, Wei Yongjun <weiyongjun1@...wei.com>,
	Chen Jun <chenjun102@...wei.com>,
	Aleksandr Mikhalitsyn <aleksandr.mikhalitsyn@...onical.com>,
	kernel@...nvz.org
Subject: Re: [PATCH 2/2] kmemleak-test: add percpu leak

On Thu, Jul 25, 2024 at 12:12:16PM +0800, Pavel Tikhomirov wrote:
> Add a per-CPU memory leak, which will be reported like:
> 
> unreferenced object 0x3efa840195f8 (size 64):
>   comm "modprobe", pid 4667, jiffies 4294688677
>   hex dump (first 32 bytes on cpu 0):
>     00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
>     00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
>   backtrace (crc 0):
>     [<ffffffffa7fa87af>] pcpu_alloc+0x3df/0x840
>     [<ffffffffc11642d9>] kmemleak_test_init+0x2c9/0x2f0 [kmemleak_test]
>     [<ffffffffa7c02264>] do_one_initcall+0x44/0x300
>     [<ffffffffa7de9e10>] do_init_module+0x60/0x240
>     [<ffffffffa7deb946>] init_module_from_file+0x86/0xc0
>     [<ffffffffa7deba99>] idempotent_init_module+0x109/0x2a0
>     [<ffffffffa7debd2a>] __x64_sys_finit_module+0x5a/0xb0
>     [<ffffffffa88f4f3a>] do_syscall_64+0x7a/0x160
>     [<ffffffffa8a0012b>] entry_SYSCALL_64_after_hwframe+0x76/0x7e
> 
> CC: Wei Yongjun <weiyongjun1@...wei.com>
> CC: Chen Jun <chenjun102@...wei.com>
> Signed-off-by: Pavel Tikhomirov <ptikhomirov@...tuozzo.com>

Acked-by: Catalin Marinas <catalin.marinas@....com>