diff options
| author |   Alexander Gordeev <agordeev@linux.ibm.com> | 2022-07-15 12:59:33 +0200 |
|---|---|---|
| committer | Alexander Gordeev <agordeev@linux.ibm.com> | 2022-07-20 17:21:41 +0200 |
| commit | f6749da17a34eb08c9665f072ce7c812ff68aad2 (patch) | |
| tree | c879fc3814c2090141e81bfc8499211df02479b0 /arch/s390/kernel | |
| parent | s390/crash: remove redundant panic() on save area allocation failure (diff) | |
| download | linux-dev-f6749da17a34eb08c9665f072ce7c812ff68aad2.tar.xz linux-dev-f6749da17a34eb08c9665f072ce7c812ff68aad2.zip | |
s390/crash: fix incorrect number of bytes to copy to user space
The number of bytes in a chunk is correctly calculated, but instead
the total number of bytes is passed to copy_to_user_real() function.
Reported-by: Matthew Wilcox <willy@infradead.org>
Fixes: df9694c7975f ("s390/dump: streamline oldmem copy functions")
Signed-off-by: Alexander Gordeev <agordeev@linux.ibm.com>
Diffstat (limited to 'arch/s390/kernel')
| -rw-r--r-- | arch/s390/kernel/crash_dump.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/s390/kernel/crash_dump.c b/arch/s390/kernel/crash_dump.c index 117f13b3d153..0efee5c49b1e 100644 --- a/arch/s390/kernel/crash_dump.c +++ b/arch/s390/kernel/crash_dump.c @@ -199,7 +199,7 @@ static int copy_oldmem_user(void __user *dst, unsigned long src, size_t count) } else { len = count; } - rc = copy_to_user_real(dst, src, count); + rc = copy_to_user_real(dst, src, len); if (rc) return rc; } |