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| author | Xunlei Pang <xlpang@redhat.com> | 2017-07-12 14:33:17 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2017-07-12 16:25:59 -0700 |
| commit | 5203f4995d9a87952a83c2ce7866adbbe8f97bb5 (patch) | |
| tree | 6db0719c9edca7724eff0765f63ba184db535d8b /kernel/crash_core.c | |
| parent | 203e9e41219b4e7357104e525e91ac609fba2c6c (diff) | |
| download | linux-5203f4995d9a87952a83c2ce7866adbbe8f97bb5.tar.gz linux-5203f4995d9a87952a83c2ce7866adbbe8f97bb5.tar.bz2 linux-5203f4995d9a87952a83c2ce7866adbbe8f97bb5.zip | |
powerpc/fadump: use the correct VMCOREINFO_NOTE_SIZE for phdr
vmcoreinfo_max_size stands for the vmcoreinfo_data, the correct one we
should use is vmcoreinfo_note whose total size is VMCOREINFO_NOTE_SIZE.
Like explained in commit 77019967f06b ("kdump: fix exported size of
vmcoreinfo note"), it should not affect the actual function, but we
better fix it, also this change should be safe and backward compatible.
After this, we can get rid of variable vmcoreinfo_max_size, let's use
the corresponding macros directly, fewer variables means more safety for
vmcoreinfo operation.
[xlpang@redhat.com: fix build warning]
Link: http://lkml.kernel.org/r/1494830606-27736-1-git-send-email-xlpang@redhat.com
Link: http://lkml.kernel.org/r/1493281021-20737-2-git-send-email-xlpang@redhat.com
Signed-off-by: Xunlei Pang <xlpang@redhat.com>
Reviewed-by: Mahesh Salgaonkar <mahesh@linux.vnet.ibm.com>
Reviewed-by: Dave Young <dyoung@redhat.com>
Cc: Hari Bathini <hbathini@linux.vnet.ibm.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Eric Biederman <ebiederm@xmission.com>
Cc: Juergen Gross <jgross@suse.com>
Cc: Michael Holzheu <holzheu@linux.vnet.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'kernel/crash_core.c')
| -rw-r--r-- | kernel/crash_core.c | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/kernel/crash_core.c b/kernel/crash_core.c index 2837d6164db8..315adbf9cb68 100644 --- a/kernel/crash_core.c +++ b/kernel/crash_core.c @@ -16,7 +16,6 @@ /* vmcoreinfo stuff */ static unsigned char *vmcoreinfo_data; size_t vmcoreinfo_size; -size_t vmcoreinfo_max_size = VMCOREINFO_BYTES; u32 *vmcoreinfo_note; /* @@ -343,7 +342,7 @@ void vmcoreinfo_append_str(const char *fmt, ...) r = vscnprintf(buf, sizeof(buf), fmt, args); va_end(args); - r = min(r, vmcoreinfo_max_size - vmcoreinfo_size); + r = min(r, (size_t)VMCOREINFO_BYTES - vmcoreinfo_size); memcpy(&vmcoreinfo_data[vmcoreinfo_size], buf, r); |