[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [xen master] xen/arm: check max_init_domid validity
commit 002641a8b76dd560f425dca636ae17149cc6b379 Author: Bertrand Marquis <bertrand.marquis@xxxxxxx> AuthorDate: Tue Feb 28 08:08:10 2023 +0000 Commit: Stefano Stabellini <stefano.stabellini@xxxxxxx> CommitDate: Tue Mar 7 15:31:00 2023 -0800 xen/arm: check max_init_domid validity Before trying to create a dom0less guest, check that max_init_domid increment will generate a valid domain ID, lower than DOMID_FIRST_RESERVED. Signed-off-by: Bertrand Marquis <bertrand.marquis@xxxxxxx> Reviewed-by: Stefano Stabellini <sstabellini@xxxxxxxxxx> --- xen/arch/arm/domain_build.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/xen/arch/arm/domain_build.c b/xen/arch/arm/domain_build.c index edca23b986..9707eb7b1b 100644 --- a/xen/arch/arm/domain_build.c +++ b/xen/arch/arm/domain_build.c @@ -3879,6 +3879,9 @@ void __init create_domUs(void) if ( !dt_device_is_compatible(node, "xen,domain") ) continue; + if ( (max_init_domid + 1) >= DOMID_FIRST_RESERVED ) + panic("No more domain IDs available\n"); + if ( dt_find_property(node, "xen,static-mem", NULL) ) flags |= CDF_staticmem; -- generated by git-patchbot for /home/xen/git/xen.git#master
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