Re: [PATCH AUTOSEL 5.0 015/262] memblock: memblock_phys_alloc_try_nid(): don't panic
From: Mike Rapoport <hidden>
Date: 2019-03-28 05:57:40
Also in:
linux-mm, lkml, stable
Hi, On Wed, Mar 27, 2019 at 01:57:50PM -0400, Sasha Levin wrote:
From: Mike Rapoport <redacted> [ Upstream commit 337555744e6e39dd1d87698c6084dd88a606d60a ] The memblock_phys_alloc_try_nid() function tries to allocate memory from the requested node and then falls back to allocation from any node in the system. The memblock_alloc_base() fallback used by this function panics if the allocation fails. Replace the memblock_alloc_base() fallback with the direct call to memblock_alloc_range_nid() and update the memblock_phys_alloc_try_nid() callers to check the returned value and panic in case of error.
This is a part of memblock refactoring, I don't think it should be applied to -stable.
quoted hunk ↗ jump to hunk
Link: http://lkml.kernel.org/r/1548057848-15136-7-git-send-email-rppt@linux.ibm.com Signed-off-by: Mike Rapoport <redacted> Acked-by: Michael Ellerman <mpe@ellerman.id.au> [powerpc] Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Christophe Leroy <redacted> Cc: Christoph Hellwig <hch@lst.de> Cc: "David S. Miller" <davem@davemloft.net> Cc: Dennis Zhou <dennis@kernel.org> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Cc: Greentime Hu <redacted> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Guan Xuetao <redacted> Cc: Guo Ren <guoren@kernel.org> Cc: Guo Ren <redacted> [c-sky] Cc: Heiko Carstens <redacted> Cc: Juergen Gross <jgross@suse.com> [Xen] Cc: Mark Salter <redacted> Cc: Matt Turner <mattst88@gmail.com> Cc: Max Filippov <jcmvbkbc@gmail.com> Cc: Michal Simek <monstr@monstr.eu> Cc: Paul Burton <redacted> Cc: Petr Mladek <pmladek@suse.com> Cc: Richard Weinberger <richard@nod.at> Cc: Rich Felker <dalias@libc.org> Cc: Rob Herring <robh+dt@kernel.org> Cc: Rob Herring <robh@kernel.org> Cc: Russell King <linux@armlinux.org.uk> Cc: Stafford Horne <shorne@gmail.com> Cc: Tony Luck <tony.luck@intel.com> Cc: Vineet Gupta <redacted> Cc: Yoshinori Sato <ysato@users.sourceforge.jp> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Sasha Levin <sashal@kernel.org> --- arch/arm64/mm/numa.c | 4 ++++ arch/powerpc/mm/numa.c | 4 ++++ mm/memblock.c | 4 +++- 3 files changed, 11 insertions(+), 1 deletion(-)diff --git a/arch/arm64/mm/numa.c b/arch/arm64/mm/numa.c index ae34e3a1cef1..2c61ea4e290b 100644 --- a/arch/arm64/mm/numa.c +++ b/arch/arm64/mm/numa.c@@ -237,6 +237,10 @@ static void __init setup_node_data(int nid, u64 start_pfn, u64 end_pfn) pr_info("Initmem setup node %d [<memory-less node>]\n", nid); nd_pa = memblock_phys_alloc_try_nid(nd_size, SMP_CACHE_BYTES, nid); + if (!nd_pa) + panic("Cannot allocate %zu bytes for node %d data\n", + nd_size, nid); + nd = __va(nd_pa); /* report and initialize */diff --git a/arch/powerpc/mm/numa.c b/arch/powerpc/mm/numa.c index 87f0dd004295..8ec2ed30d44c 100644 --- a/arch/powerpc/mm/numa.c +++ b/arch/powerpc/mm/numa.c@@ -788,6 +788,10 @@ static void __init setup_node_data(int nid, u64 start_pfn, u64 end_pfn) int tnid; nd_pa = memblock_phys_alloc_try_nid(nd_size, SMP_CACHE_BYTES, nid); + if (!nd_pa) + panic("Cannot allocate %zu bytes for node %d data\n", + nd_size, nid); + nd = __va(nd_pa); /* report and initialize */diff --git a/mm/memblock.c b/mm/memblock.c index ea31045ba704..d5923df56acc 100644 --- a/mm/memblock.c +++ b/mm/memblock.c@@ -1342,7 +1342,9 @@ phys_addr_t __init memblock_phys_alloc_try_nid(phys_addr_t size, phys_addr_t ali if (res) return res; - return memblock_alloc_base(size, align, MEMBLOCK_ALLOC_ACCESSIBLE); + return memblock_alloc_range_nid(size, align, 0, + MEMBLOCK_ALLOC_ACCESSIBLE, + NUMA_NO_NODE, MEMBLOCK_NONE); } /**-- 2.19.1
-- Sincerely yours, Mike.