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| author | Fernando Luis Vázquez Cao <fernando@oss.ntt.co.jp> | 2007-10-18 23:39:14 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-10-19 11:53:33 -0700 |
| commit | 22124c9999f00340b062fff740db30187bf18454 (patch) | |
| tree | e3486a4965def48c38355ce7365ee84d6e89618b /arch | |
| parent | 3305a6bc2c4dbd8f7fde1b9941ccb260bc6355c2 (diff) | |
| download | linux-22124c9999f00340b062fff740db30187bf18454.tar.gz linux-22124c9999f00340b062fff740db30187bf18454.tar.bz2 linux-22124c9999f00340b062fff740db30187bf18454.zip | |
kmap leak fix for x86_32 kdump
copy_oldmem_page should not return leaving a page frame from the
previous kernel mapped.
Signed-off-by: Fernando Luis Vázquez Cao <fernando@oss.ntt.co.jp>
Acked-by: Vivek Goyal <vgoyal@in.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/x86/kernel/crash_dump_32.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/x86/kernel/crash_dump_32.c b/arch/x86/kernel/crash_dump_32.c index 32e75d0731a9..72d0c56c1b48 100644 --- a/arch/x86/kernel/crash_dump_32.c +++ b/arch/x86/kernel/crash_dump_32.c @@ -47,6 +47,7 @@ ssize_t copy_oldmem_page(unsigned long pfn, char *buf, if (!kdump_buf_page) { printk(KERN_WARNING "Kdump: Kdump buffer page not" " allocated\n"); + kunmap_atomic(vaddr, KM_PTE0); return -EFAULT; } copy_page(kdump_buf_page, vaddr); |