[Xen-devel] [PATCH] pvcalls-front: fix potential null dereference

vcalls-front: Avoid get_free_pages(GFP_KERNEL) under spinlock") Reported-by: Dan Carpenter Signed-off-by: Wen Yang CC: Boris Ostrovsky CC: Juergen Gross CC: Stefano Stabellini CC: Dan Carpenter CC: xen-devel@lists.xenproject.org CC: linux-ker...@vger.kernel.org --- drivers/xen/pvcalls

[Xen-devel] [PATCH v2] pvcalls-front: fix potential null dereference

lls-front: Avoid get_free_pages(GFP_KERNEL) under spinlock") Reported-by: Dan Carpenter Suggested-by: Boris Ostrovsky Signed-off-by: Wen Yang CC: Boris Ostrovsky CC: Juergen Gross CC: Stefano Stabellini CC: Dan Carpenter CC: xen-devel@lists.xenproject.org CC: linux-ker...@vger

[Xen-devel] [PATCH] pvcalls-front: Use GFP_ATOMIC under spin_lock

held, The allocation is not allowed to sleep and GFP_KERNEL is not sufficient, it has to be ATOMIC. This issue was detected by using the Coccinelle software. Signed-off-by: Wen Yang CC: Julia Lawall CC: Boris Ostrovsky CC: Juergen Gross CC: Stefano Stabellini CC: xen-devel@lists.xenproject.org CC:

[Xen-devel] [PATCH v2] pvcalls-front: Avoid __get_free_pages(GFP_KERNEL) under spinlock

ed-off-by: Wen Yang CC: Julia Lawall CC: Boris Ostrovsky CC: Juergen Gross CC: Stefano Stabellini CC: xen-devel@lists.xenproject.org CC: linux-ker...@vger.kernel.org --- drivers/xen/pvcalls-front.c | 71 ++--- 1 file changed, 59 insertions(+), 12 deletions(-) d

[Xen-devel] [PATCH v3] pvcalls-front: Avoid __get_free_pages(GFP_KERNEL) under spinlock

ators i.e., free_page() and free_pages(), respectively. Suggested-by: Juergen Gross Signed-off-by: Wen Yang CC: Julia Lawall CC: Boris Ostrovsky CC: Juergen Gross CC: Stefano Stabellini CC: xen-devel@lists.xenproject.org CC: linux-ker...@vger.kernel.org --- drivers/xen/pvcalls-fro

[Xen-devel] [PATCH v4] pvcalls-front: Avoid get_free_pages(GFP_KERNEL) under spinlock

ators i.e., free_page() and free_pages(), respectively. v4: It would be better to pre-populate map (struct sock_mapping), rather than introducing one more new struct. Suggested-by: Juergen Gross Suggested-by: Boris Ostrovsky Suggested-by: Stefano Stabellini Signed-off-by: Wen Yang CC: Jul

[Xen-devel] [PATCH v5] pvcalls-front: Avoid get_free_pages(GFP_KERNEL) under spinlock

e kzalloc(sizeof(*map2), GFP_ATOMIC) outside spinlock and use GFP_KERNEL instead. Suggested-by: Juergen Gross Suggested-by: Boris Ostrovsky Suggested-by: Stefano Stabellini Signed-off-by: Wen Yang CC: Julia Lawall CC: Boris Ostrovsky CC: Juergen Gross CC: Stefano Stabellini CC:

[Xen-devel] [PATCH v6] pvcalls-front: Avoid get_free_pages(GFP_KERNEL) under spinlock

e kzalloc(sizeof(*map2), GFP_ATOMIC) outside spinlock and use GFP_KERNEL instead. v6: Drop the superfluous calls. Suggested-by: Juergen Gross Suggested-by: Boris Ostrovsky Suggested-by: Stefano Stabellini Signed-off-by: Wen Yang CC: Julia Lawall CC: Boris Ostrovsky CC: Juergen Gross CC