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Message-ID: <YZOTT2v+V14Nk7IB@osiris>
Date: Tue, 16 Nov 2021 12:17:35 +0100
From: Heiko Carstens <hca@...ux.ibm.com>
To: Baoquan He <bhe@...hat.com>
Cc: linux-kernel@...r.kernel.org, linux-s390@...r.kernel.org,
kexec@...ts.infradead.org, prudo@...hat.com
Subject: Re: [PATCH v2 RESEND 2/2] s390/kexec: fix memory leak of ipl report
buffer
On Tue, Nov 16, 2021 at 11:31:01AM +0800, Baoquan He wrote:
> unreferenced object 0x38000195000 (size 4096):
> comm "kexec", pid 8548, jiffies 4294953647 (age 32443.270s)
> hex dump (first 32 bytes):
> 00 00 00 c8 20 00 00 00 00 00 00 c0 02 80 00 00 .... ...........
> 40 40 40 40 40 40 40 40 00 00 00 00 00 00 00 00 @@@@@@@@........
> backtrace:
> [<0000000011a2f199>] __vmalloc_node_range+0xc0/0x140
> [<0000000081fa2752>] vzalloc+0x5a/0x70
> [<0000000063a4c92d>] ipl_report_finish+0x2c/0x180
> [<00000000553304da>] kexec_file_add_ipl_report+0xf4/0x150
> [<00000000862d033f>] kexec_file_add_components+0x124/0x160
> [<000000000d2717bb>] arch_kexec_kernel_image_load+0x62/0x90
> [<000000002e0373b6>] kimage_file_alloc_init+0x1aa/0x2e0
> [<0000000060f2d14f>] __do_sys_kexec_file_load+0x17c/0x2c0
> [<000000008c86fe5a>] __s390x_sys_kexec_file_load+0x40/0x50
> [<000000001fdb9dac>] __do_syscall+0x1bc/0x1f0
> [<000000003ee4258d>] system_call+0x78/0xa0
>
> Signed-off-by: Baoquan He <bhe@...hat.com>
> Fixes: 99feaa717e55 ("s390/kexec_file: Create ipl report and pass to next kernel")
> ---
> RESEND:
> Fix the incorrect subject.
>
> arch/s390/include/asm/kexec.h | 7 +++++++
> arch/s390/kernel/machine_kexec_file.c | 9 +++++++++
> 2 files changed, 16 insertions(+)
Applied, thanks!
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