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[5.6,118/126] s390/kexec_file: fix initrd location for kdump kernel

Message ID 20200526183947.339223846@linuxfoundation.org
State Superseded
Headers show
Series None | expand

Commit Message

Greg KH May 26, 2020, 6:54 p.m. UTC 
From: Philipp Rudo <prudo@linux.ibm.com>

commit 70b690547d5ea1a3d135a4cc39cd1e08246d0c3a upstream.

initrd_start must not point at the location the initrd is loaded into
the crashkernel memory but at the location it will be after the
crashkernel memory is swapped with the memory at 0.

Fixes: ee337f5469fd ("s390/kexec_file: Add crash support to image loader")
Reported-by: Lianbo Jiang <lijiang@redhat.com>
Signed-off-by: Philipp Rudo <prudo@linux.ibm.com>
Tested-by: Lianbo Jiang <lijiang@redhat.com>
Link: https://lore.kernel.org/r/20200512193956.15ae3f23@laptop2-ibm.local
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 arch/s390/kernel/machine_kexec_file.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
diff mbox series

Patch

--- a/arch/s390/kernel/machine_kexec_file.c
+++ b/arch/s390/kernel/machine_kexec_file.c
@@ -151,7 +151,7 @@  static int kexec_file_add_initrd(struct
 		buf.mem += crashk_res.start;
 	buf.memsz = buf.bufsz;
 
-	data->parm->initrd_start = buf.mem;
+	data->parm->initrd_start = data->memsz;
 	data->parm->initrd_size = buf.memsz;
 	data->memsz += buf.memsz;