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| author | Alexander Gordeev <agordeev@linux.ibm.com> | 2022-07-15 13:59:33 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2022-08-17 15:24:10 +0300 |
| commit | f1415771f6a1e2d63265bf8399946d2ead837171 (patch) | |
| tree | 0fbe544230f66f2a3fbb65998fdb5f4ad5cb14b2 /arch/s390 | |
| parent | 2165fd2bae8ad2cbf2d79b80d13f6e896eeaefe6 (diff) | |
| download | linux-f1415771f6a1e2d63265bf8399946d2ead837171.tar.xz | |
s390/crash: fix incorrect number of bytes to copy to user space
[ Upstream commit f6749da17a34eb08c9665f072ce7c812ff68aad2 ]
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>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'arch/s390')
| -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 199f136d1644..f17ad2daab07 100644 --- a/arch/s390/kernel/crash_dump.c +++ b/arch/s390/kernel/crash_dump.c @@ -198,7 +198,7 @@ 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; } |