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| author | Jianglei Nie <niejianglei2021@163.com> | 2022-09-29 06:29:33 +0200 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2022-11-18 22:55:06 +0100 |
| commit | 12b9d301ff73122aebd78548fa4c04ca69ed78fe (patch) | |
| tree | 4220e055e8607de89606ae3210b88e569f3d3e77 /fs/proc | |
| parent | ocfs2/dlm: use bitmap API instead of hand-writing it (diff) | |
| download | linux-12b9d301ff73122aebd78548fa4c04ca69ed78fe.tar.xz linux-12b9d301ff73122aebd78548fa4c04ca69ed78fe.zip | |
proc/vmcore: fix potential memory leak in vmcore_init()
Patch series "Some minor cleanup patches resent".
The first three patches trivial clean up patches.
And for the patch "kexec: replace crash_mem_range with range", I got a
ibm-p9wr ppc64le system to test, it works well.
This patch (of 4):
elfcorehdr_alloc() allocates a memory chunk for elfcorehdr_addr with
kzalloc(). If is_vmcore_usable() returns false, elfcorehdr_addr is a
predefined value. If parse_crash_elf_headers() gets some error and
returns a negetive value, the elfcorehdr_addr should be released with
elfcorehdr_free().
Fix it by calling elfcorehdr_free() when parse_crash_elf_headers() fails.
Link: https://lkml.kernel.org/r/20220929042936.22012-1-bhe@redhat.com
Link: https://lkml.kernel.org/r/20220929042936.22012-2-bhe@redhat.com
Signed-off-by: Jianglei Nie <niejianglei2021@163.com>
Signed-off-by: Baoquan He <bhe@redhat.com>
Acked-by: Baoquan He <bhe@redhat.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Chen Lifu <chenlifu@huawei.com>
Cc: "Eric W . Biederman" <ebiederm@xmission.com>
Cc: Li Chen <lchen@ambarella.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Petr Mladek <pmladek@suse.com>
Cc: Russell King <linux@armlinux.org.uk>
Cc: ye xingchen <ye.xingchen@zte.com.cn>
Cc: Zeal Robot <zealci@zte.com.cn>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'fs/proc')
| -rw-r--r-- | fs/proc/vmcore.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/fs/proc/vmcore.c b/fs/proc/vmcore.c index f2aa86c421f2..74747571d58e 100644 --- a/fs/proc/vmcore.c +++ b/fs/proc/vmcore.c @@ -1567,6 +1567,7 @@ static int __init vmcore_init(void) return rc; rc = parse_crash_elf_headers(); if (rc) { + elfcorehdr_free(elfcorehdr_addr); pr_warn("Kdump: vmcore not initialized\n"); return rc; } |