Hello,
I had a similiar panic when booting an ARM VM with kernel v5.9-rc1. git
bisect identified following bad commit. After reverting the bad commit,
the VM boot ok. Maybe we should look into the following commit.
d323bb44e4d23802eb25d13de1f93f2335bd60d0 is the first bad commit
commit d323bb4
do_sys_finit_module+0xbe/0x120
? __do_sys_finit_module+0xbe/0x120
__x64_sys_finit_module+0x1a/0x20
do_syscall_64+0x38/0x50
entry_SYSCALL_64_after_hwframe+0x44/0xa9
Signed-off-by: Thomas Tai
---
include/linux/dma-direct.h | 2 +-
kernel/dma/swiotlb.c | 2 +-
2 files changed, 2 inserti
On 2020-09-15 10:07 a.m., Christoph Hellwig wrote:
On Tue, Sep 15, 2020 at 08:03:14AM -0600, Thomas Tai wrote:
When booting the kernel v5.9-rc4 on a VM, the kernel would panic when
printing a warning message in swiotlb_map(). It is because dev->dma_mask
can potentially be a null poin
On 2020-09-15 10:26 a.m., Christoph Hellwig wrote:
On Tue, Sep 15, 2020 at 10:11:51AM -0400, Thomas Tai wrote:
On 2020-09-15 10:07 a.m., Christoph Hellwig wrote:
On Tue, Sep 15, 2020 at 08:03:14AM -0600, Thomas Tai wrote:
When booting the kernel v5.9-rc4 on a VM, the kernel would panic
On 2020-09-15 11:09 a.m., Christoph Hellwig wrote:
On Tue, Sep 15, 2020 at 10:40:39AM -0400, Thomas Tai wrote:
+++ b/include/linux/dma-direct.h
@@ -62,9 +62,6 @@ static inline bool dma_capable(struct device *dev, dma_addr_t
addr, size_t size,
{
dma_addr_t end = addr + size - 1
On 2020-09-15 11:09 a.m., Christoph Hellwig wrote:
On Tue, Sep 15, 2020 at 10:40:39AM -0400, Thomas Tai wrote:
+++ b/include/linux/dma-direct.h
@@ -62,9 +62,6 @@ static inline bool dma_capable(struct device *dev, dma_addr_t
addr, size_t size,
{
dma_addr_t end = addr + size - 1
xbe/0x120
__x64_sys_finit_module+0x1a/0x20
do_syscall_64+0x38/0x50
entry_SYSCALL_64_after_hwframe+0x44/0xa9
Signed-off-by: Thomas Tai
---
include/linux/dma-direct.h | 3 ---
kernel/dma/mapping.c | 11 +++
2 files changed, 11 insertions(+), 3 deletions(-)
diff --git a/include/linux/dma-direct.h
On 2020-09-17 12:44 p.m., Christoph Hellwig wrote:
Thanks,
applied to the dma-mapping for-next tree.
Thank you, Christoph for suggesting and applying the fix.
Thomas
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On 2020-09-17 12:05 p.m., Konrad Rzeszutek Wilk wrote:
On Wed, Sep 16, 2020 at 02:51:06PM -0600, Thomas Tai wrote:
When booting the kernel v5.9-rc4 on a VM, the kernel would panic when
printing a warning message in swiotlb_map(). The dev->dma_mask must not
be a NULL pointer when calling
