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From: Mike Rapoport <rppt@linux.ibm.com>
To: linux-mm@kvack.org
Cc: Rich Felker <dalias@libc.org>,
	linux-ia64@vger.kernel.org, devicetree@vger.kernel.org,
	Catalin Marinas <catalin.marinas@arm.com>,
	Heiko Carstens <heiko.carstens@de.ibm.com>,
	x86@kernel.org, linux-mips@vger.kernel.org,
	Max Filippov <jcmvbkbc@gmail.com>, Guo Ren <guoren@kernel.org>,
	sparclinux@vger.kernel.org, Christoph Hellwig <hch@lst.de>,
	linux-s390@vger.kernel.org, linux-c6x-dev@linux-c6x.org,
	Yoshinori Sato <ysato@users.sourceforge.jp>,
	Richard Weinberger <richard@nod.at>,
	linux-sh@vger.kernel.org, Russell King <linux@armlinux.org.uk>,
	kasan-dev@googlegroups.com, Mike Rapoport <rppt@linux.ibm.com>,
	Geert Uytterhoeven <geert@linux-m68k.org>,
	Mark Salter <msalter@redhat.com>, Dennis Zhou <dennis@kernel.org>,
	Matt Turner <mattst88@gmail.com>,
	linux-snps-arc@lists.infradead.org,
	uclinux-h8-devel@lists.sourceforge.jp,
	Petr Mladek <pmladek@suse.com>,
	linux-xtensa@linux-xten
Subject: [PATCH 18/21] swiotlb: add checks for the return value of memblock_alloc*()
Date: Wed, 16 Jan 2019 15:44:18 +0200	[thread overview]
Message-ID: <1547646261-32535-19-git-send-email-rppt__8734.78602520681$1547646307$gmane$org@linux.ibm.com> (raw)
In-Reply-To: <1547646261-32535-1-git-send-email-rppt@linux.ibm.com>

Add panic() calls if memblock_alloc() returns NULL.

The panic() format duplicates the one used by memblock itself and in order
to avoid explosion with long parameters list replace open coded allocation
size calculations with a local variable.

Signed-off-by: Mike Rapoport <rppt@linux.ibm.com>
---
 kernel/dma/swiotlb.c | 19 +++++++++++++------
 1 file changed, 13 insertions(+), 6 deletions(-)

diff --git a/kernel/dma/swiotlb.c b/kernel/dma/swiotlb.c
index d636177..e78835c8 100644
--- a/kernel/dma/swiotlb.c
+++ b/kernel/dma/swiotlb.c
@@ -191,6 +191,7 @@ void __init swiotlb_update_mem_attributes(void)
 int __init swiotlb_init_with_tbl(char *tlb, unsigned long nslabs, int verbose)
 {
 	unsigned long i, bytes;
+	size_t alloc_size;
 
 	bytes = nslabs << IO_TLB_SHIFT;
 
@@ -203,12 +204,18 @@ int __init swiotlb_init_with_tbl(char *tlb, unsigned long nslabs, int verbose)
 	 * to find contiguous free memory regions of size up to IO_TLB_SEGSIZE
 	 * between io_tlb_start and io_tlb_end.
 	 */
-	io_tlb_list = memblock_alloc(
-				PAGE_ALIGN(io_tlb_nslabs * sizeof(int)),
-				PAGE_SIZE);
-	io_tlb_orig_addr = memblock_alloc(
-				PAGE_ALIGN(io_tlb_nslabs * sizeof(phys_addr_t)),
-				PAGE_SIZE);
+	alloc_size = PAGE_ALIGN(io_tlb_nslabs * sizeof(int));
+	io_tlb_list = memblock_alloc(alloc_size, PAGE_SIZE);
+	if (!io_tlb_list)
+		panic("%s: Failed to allocate %lu bytes align=0x%lx\n",
+		      __func__, alloc_size, PAGE_SIZE);
+
+	alloc_size = PAGE_ALIGN(io_tlb_nslabs * sizeof(phys_addr_t));
+	io_tlb_orig_addr = memblock_alloc(alloc_size, PAGE_SIZE);
+	if (!io_tlb_orig_addr)
+		panic("%s: Failed to allocate %lu bytes align=0x%lx\n",
+		      __func__, alloc_size, PAGE_SIZE);
+
 	for (i = 0; i < io_tlb_nslabs; i++) {
 		io_tlb_list[i] = IO_TLB_SEGSIZE - OFFSET(i, IO_TLB_SEGSIZE);
 		io_tlb_orig_addr[i] = INVALID_PHYS_ADDR;
-- 
2.7.4


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  parent reply	other threads:[~2019-01-16 13:46 UTC|newest]

Thread overview: 308+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-01-16 13:44 [PATCH 00/21] Refine memblock API Mike Rapoport
2019-01-16 13:44 ` [OpenRISC] " Mike Rapoport
2019-01-16 13:44 ` Mike Rapoport
2019-01-16 13:44 ` Mike Rapoport
2019-01-16 13:44 ` Mike Rapoport
2019-01-16 13:44 ` Mike Rapoport
2019-01-16 13:44 ` Mike Rapoport
2019-01-16 13:44 ` [PATCH 01/21] openrisc: prefer memblock APIs returning virtual address Mike Rapoport
2019-01-16 13:44 ` Mike Rapoport
2019-01-16 13:44   ` [OpenRISC] " Mike Rapoport
2019-01-16 13:44   ` Mike Rapoport
2019-01-16 13:44   ` Mike Rapoport
2019-01-16 13:44   ` [01/21] " Mike Rapoport
2019-01-16 13:44   ` [PATCH 01/21] " Mike Rapoport
2019-01-16 13:44   ` Mike Rapoport
2019-01-16 13:44   ` Mike Rapoport
2019-01-16 13:44 ` [PATCH 02/21] powerpc: use memblock functions " Mike Rapoport
2019-01-16 13:44   ` [OpenRISC] " Mike Rapoport
2019-01-16 13:44   ` Mike Rapoport
2019-01-16 13:44   ` Mike Rapoport
2019-01-16 13:44   ` [02/21] " Mike Rapoport
2019-01-16 13:44   ` [PATCH 02/21] " Mike Rapoport
2019-01-16 13:44   ` Mike Rapoport
2019-01-16 13:44 ` [PATCH 03/21] memblock: replace memblock_alloc_base(ANYWHERE) with memblock_phys_alloc Mike Rapoport
2019-01-16 13:44 ` Mike Rapoport
2019-01-16 13:44   ` [OpenRISC] " Mike Rapoport
2019-01-16 13:44   ` Mike Rapoport
2019-01-16 13:44   ` Mike Rapoport
2019-01-16 13:44   ` [03/21] " Mike Rapoport
2019-01-16 13:44   ` [PATCH 03/21] " Mike Rapoport
2019-01-16 13:44   ` Mike Rapoport
2019-01-16 13:44   ` Mike Rapoport
2019-01-16 13:44 ` [PATCH 04/21] memblock: drop memblock_alloc_base_nid() Mike Rapoport
2019-01-16 13:44   ` [OpenRISC] " Mike Rapoport
2019-01-16 13:44   ` Mike Rapoport
2019-01-16 13:44   ` Mike Rapoport
2019-01-16 13:44   ` [04/21] " Mike Rapoport
2019-01-16 13:44   ` [PATCH 04/21] " Mike Rapoport
2019-01-16 13:44   ` Mike Rapoport
2019-01-16 13:44   ` Mike Rapoport
2019-01-16 13:44 ` Mike Rapoport
2019-01-16 13:44 ` [PATCH 05/21] memblock: emphasize that memblock_alloc_range() returns a physical address Mike Rapoport
2019-01-16 13:44 ` Mike Rapoport
2019-01-16 13:44   ` [OpenRISC] " Mike Rapoport
2019-01-16 13:44   ` Mike Rapoport
2019-01-16 13:44   ` Mike Rapoport
2019-01-16 13:44   ` [05/21] " Mike Rapoport
2019-01-16 13:44   ` [PATCH 05/21] " Mike Rapoport
2019-01-16 13:44   ` Mike Rapoport
2019-01-16 13:44   ` Mike Rapoport
2019-01-16 13:44 ` [PATCH 06/21] memblock: memblock_phys_alloc_try_nid(): don't panic Mike Rapoport
2019-01-16 13:44 ` Mike Rapoport
2019-01-16 13:44   ` [OpenRISC] " Mike Rapoport
2019-01-16 13:44   ` Mike Rapoport
2019-01-16 13:44   ` Mike Rapoport
2019-01-16 13:44   ` [06/21] " Mike Rapoport
2019-01-16 13:44   ` [PATCH 06/21] " Mike Rapoport
2019-01-16 13:44   ` Mike Rapoport
2019-01-16 13:44   ` Mike Rapoport
2019-01-16 13:44 ` [PATCH 07/21] memblock: memblock_phys_alloc(): " Mike Rapoport
2019-01-16 13:44   ` [OpenRISC] " Mike Rapoport
2019-01-16 13:44   ` Mike Rapoport
2019-01-16 13:44   ` Mike Rapoport
2019-01-16 13:44   ` [07/21] " Mike Rapoport
2019-01-16 13:44   ` [PATCH 07/21] " Mike Rapoport
2019-01-16 13:44   ` Mike Rapoport
2019-01-16 13:44   ` Mike Rapoport
2019-01-16 13:44 ` Mike Rapoport
2019-01-16 13:44 ` [PATCH 08/21] memblock: drop __memblock_alloc_base() Mike Rapoport
2019-01-16 13:44   ` [OpenRISC] " Mike Rapoport
2019-01-16 13:44   ` Mike Rapoport
2019-01-16 13:44   ` Mike Rapoport
2019-01-16 13:44   ` [08/21] " Mike Rapoport
2019-01-16 13:44   ` [PATCH 08/21] " Mike Rapoport
2019-01-16 13:44   ` Mike Rapoport
2019-01-16 13:44   ` Mike Rapoport
2019-01-16 15:15   ` Rob Herring
2019-01-16 15:15   ` Rob Herring
2019-01-16 15:15     ` Rob Herring
2019-01-16 15:15     ` [OpenRISC] " Rob Herring
2019-01-16 15:15     ` Rob Herring
2019-01-16 15:15     ` Rob Herring
2019-01-16 15:15     ` Rob Herring
2019-01-16 15:15     ` Rob Herring
2019-01-16 15:15     ` Rob Herring
2019-01-16 13:44 ` Mike Rapoport
2019-01-16 13:44 ` [PATCH 09/21] memblock: drop memblock_alloc_base() Mike Rapoport
2019-01-16 13:44   ` [OpenRISC] " Mike Rapoport
2019-01-16 13:44   ` Mike Rapoport
2019-01-16 13:44   ` Mike Rapoport
2019-01-16 13:44   ` [09/21] " Mike Rapoport
2019-01-16 13:44   ` [PATCH 09/21] " Mike Rapoport
2019-01-16 13:44   ` Mike Rapoport
2019-01-16 13:44   ` Mike Rapoport
2019-01-16 13:44 ` [PATCH 10/21] memblock: refactor internal allocation functions Mike Rapoport
2019-01-16 13:44   ` [OpenRISC] " Mike Rapoport
2019-01-16 13:44   ` Mike Rapoport
2019-01-16 13:44   ` Mike Rapoport
2019-01-16 13:44   ` [10/21] " Mike Rapoport
2019-01-16 13:44   ` [PATCH 10/21] " Mike Rapoport
2019-01-16 13:44   ` Mike Rapoport
2019-01-16 13:44   ` Mike Rapoport
2019-01-16 13:44 ` Mike Rapoport
2019-01-16 13:44 ` [PATCH 11/21] memblock: make memblock_find_in_range_node() and choose_memblock_flags() static Mike Rapoport
2019-01-16 13:44   ` [OpenRISC] " Mike Rapoport
2019-01-16 13:44   ` Mike Rapoport
2019-01-16 13:44   ` Mike Rapoport
2019-01-16 13:44   ` [11/21] " Mike Rapoport
2019-01-16 13:44   ` [PATCH 11/21] " Mike Rapoport
2019-01-16 13:44   ` Mike Rapoport
2019-01-16 13:44   ` Mike Rapoport
2019-01-16 13:44 ` [PATCH 12/21] arch: use memblock_alloc() instead of memblock_alloc_from(size, align, 0) Mike Rapoport
2019-01-16 13:44   ` [OpenRISC] " Mike Rapoport
2019-01-16 13:44   ` Mike Rapoport
2019-01-16 13:44   ` Mike Rapoport
2019-01-16 13:44   ` [12/21] " Mike Rapoport
2019-01-16 13:44   ` [PATCH 12/21] " Mike Rapoport
2019-01-16 13:44   ` Mike Rapoport
2019-01-16 13:44   ` Mike Rapoport
2019-01-18 17:53   ` Paul Burton
2019-01-18 17:53   ` Paul Burton
2019-01-18 17:53     ` [OpenRISC] " Paul Burton
2019-01-18 17:53     ` Paul Burton
2019-01-18 17:53     ` Paul Burton
2019-01-18 17:53     ` Paul Burton
2019-01-18 17:53     ` Paul Burton
2019-01-16 13:44 ` Mike Rapoport
2019-01-16 13:44 ` [PATCH 13/21] arch: don't memset(0) memory returned by memblock_alloc() Mike Rapoport
2019-01-16 13:44   ` [OpenRISC] " Mike Rapoport
2019-01-16 13:44   ` Mike Rapoport
2019-01-16 13:44   ` Mike Rapoport
2019-01-16 13:44   ` [13/21] " Mike Rapoport
2019-01-16 13:44   ` [PATCH 13/21] " Mike Rapoport
2019-01-16 13:44   ` Mike Rapoport
2019-01-16 13:44   ` Mike Rapoport
2019-01-16 14:17   ` Geert Uytterhoeven
2019-01-16 14:17   ` Geert Uytterhoeven
2019-01-16 14:17     ` Geert Uytterhoeven
2019-01-16 14:17     ` Geert Uytterhoeven
2019-01-16 14:17     ` [OpenRISC] " Geert Uytterhoeven
2019-01-16 14:17     ` Geert Uytterhoeven
2019-01-16 14:17     ` Geert Uytterhoeven
2019-01-16 14:17     ` Geert Uytterhoeven
2019-01-16 14:17     ` Geert Uytterhoeven
2019-01-16 14:17     ` Geert Uytterhoeven
2019-01-16 13:44 ` Mike Rapoport
2019-01-16 13:44 ` [PATCH 14/21] ia64: add checks for the return value of memblock_alloc*() Mike Rapoport
2019-01-16 13:44   ` [OpenRISC] " Mike Rapoport
2019-01-16 13:44   ` Mike Rapoport
2019-01-16 13:44   ` Mike Rapoport
2019-01-16 13:44   ` [14/21] " Mike Rapoport
2019-01-16 13:44   ` [PATCH 14/21] " Mike Rapoport
2019-01-16 13:44   ` Mike Rapoport
2019-01-16 13:44   ` Mike Rapoport
2019-01-16 13:44 ` Mike Rapoport
2019-01-16 13:44 ` [PATCH 15/21] sparc: " Mike Rapoport
2019-01-16 13:44 ` Mike Rapoport
2019-01-16 13:44   ` [OpenRISC] " Mike Rapoport
2019-01-16 13:44   ` Mike Rapoport
2019-01-16 13:44   ` Mike Rapoport
2019-01-16 13:44   ` [15/21] " Mike Rapoport
2019-01-16 13:44   ` [PATCH 15/21] " Mike Rapoport
2019-01-16 13:44   ` Mike Rapoport
2019-01-16 13:44   ` Mike Rapoport
2019-01-16 17:21   ` David Miller
2019-01-16 17:21     ` [OpenRISC] " David Miller
2019-01-16 17:21     ` David Miller
2019-01-16 17:21     ` David Miller
2019-01-16 17:21     ` [15/21] " David Miller
2019-01-16 17:21     ` [PATCH 15/21] " David Miller
2019-01-16 17:21     ` David Miller
2019-01-16 17:21     ` David Miller
2019-01-16 17:21   ` David Miller
2019-01-16 13:44 ` [PATCH 16/21] mm/percpu: " Mike Rapoport
2019-01-16 13:44   ` [OpenRISC] " Mike Rapoport
2019-01-16 13:44   ` Mike Rapoport
2019-01-16 13:44   ` Mike Rapoport
2019-01-16 13:44   ` [16/21] " Mike Rapoport
2019-01-16 13:44   ` [PATCH 16/21] " Mike Rapoport
2019-01-16 13:44   ` Mike Rapoport
2019-01-16 13:44   ` Mike Rapoport
2019-01-16 13:44 ` Mike Rapoport
2019-01-16 13:44 ` [PATCH 17/21] init/main: " Mike Rapoport
2019-01-16 13:44   ` [OpenRISC] " Mike Rapoport
2019-01-16 13:44   ` Mike Rapoport
2019-01-16 13:44   ` Mike Rapoport
2019-01-16 13:44   ` [17/21] " Mike Rapoport
2019-01-16 13:44   ` [PATCH 17/21] " Mike Rapoport
2019-01-16 13:44   ` Mike Rapoport
2019-01-16 13:44   ` Mike Rapoport
2019-01-16 13:44 ` Mike Rapoport
2019-01-16 13:44 ` [PATCH 18/21] swiotlb: " Mike Rapoport
2019-01-16 13:44   ` [OpenRISC] " Mike Rapoport
2019-01-16 13:44   ` Mike Rapoport
2019-01-16 13:44   ` Mike Rapoport
2019-01-16 13:44   ` [18/21] " Mike Rapoport
2019-01-16 13:44   ` [PATCH 18/21] " Mike Rapoport
2019-01-16 13:44   ` Mike Rapoport
2019-01-16 13:44   ` Mike Rapoport
2019-01-16 13:44 ` Mike Rapoport [this message]
2019-01-16 13:44 ` [PATCH 19/21] treewide: " Mike Rapoport
2019-01-16 13:44   ` [OpenRISC] " Mike Rapoport
2019-01-16 13:44   ` Mike Rapoport
2019-01-16 13:44   ` Mike Rapoport
2019-01-16 13:44   ` [19/21] " Mike Rapoport
2019-01-16 13:44   ` [PATCH 19/21] " Mike Rapoport
2019-01-16 13:44   ` Mike Rapoport
2019-01-16 13:44   ` Mike Rapoport
2019-01-16 14:27   ` Geert Uytterhoeven
2019-01-16 14:27     ` Geert Uytterhoeven
2019-01-16 14:27     ` Geert Uytterhoeven
2019-01-16 14:27     ` [OpenRISC] " Geert Uytterhoeven
2019-01-16 14:27     ` Geert Uytterhoeven
2019-01-16 14:27     ` Geert Uytterhoeven
2019-01-16 14:27     ` Geert Uytterhoeven
2019-01-16 14:27     ` Geert Uytterhoeven
2019-01-16 14:27     ` Geert Uytterhoeven
2019-01-16 15:13     ` Mike Rapoport
2019-01-16 15:13     ` Mike Rapoport
2019-01-16 15:13       ` Mike Rapoport
2019-01-16 15:13       ` [OpenRISC] " Mike Rapoport
2019-01-16 15:13       ` Mike Rapoport
2019-01-16 15:13       ` Mike Rapoport
2019-01-16 15:13       ` Mike Rapoport
2019-01-16 15:13       ` Mike Rapoport
2019-01-16 15:13       ` Mike Rapoport
2019-01-16 14:27   ` Geert Uytterhoeven
2019-01-16 14:32   ` [Xen-devel] " Juergen Gross
2019-01-16 14:32     ` [OpenRISC] " Juergen Gross
2019-01-16 14:32     ` Juergen Gross
2019-01-16 14:32     ` Juergen Gross
2019-01-16 14:32     ` [19/21] " Juergen Gross
2019-01-16 14:32     ` [Xen-devel] [PATCH 19/21] " Juergen Gross
2019-01-16 14:32     ` Juergen Gross
2019-01-16 14:32     ` Juergen Gross
2019-01-16 14:32   ` Juergen Gross
2019-01-16 15:18   ` Rob Herring
2019-01-16 15:18     ` Rob Herring
2019-01-16 15:18     ` [OpenRISC] " Rob Herring
2019-01-16 15:18     ` Rob Herring
2019-01-16 15:18     ` Rob Herring
2019-01-16 15:18     ` Rob Herring
2019-01-16 15:18     ` Rob Herring
2019-01-16 15:18     ` Rob Herring
2019-01-16 15:18   ` Rob Herring
2019-01-17  7:06   ` Guo Ren
2019-01-17  7:06     ` [OpenRISC] " Guo Ren
2019-01-17  7:06     ` Guo Ren
2019-01-17  7:06     ` Guo Ren
2019-01-17  7:06     ` [19/21] " Guo Ren
2019-01-17  7:06     ` [PATCH 19/21] " Guo Ren
2019-01-17  7:06     ` Guo Ren
2019-01-17  7:06     ` Guo Ren
2019-01-17  7:06   ` Guo Ren
2019-01-18  8:43   ` Heiko Carstens
2019-01-18  8:43   ` Heiko Carstens
2019-01-18  8:43     ` [OpenRISC] " Heiko Carstens
2019-01-18  8:43     ` Heiko Carstens
2019-01-18  8:43     ` Heiko Carstens
2019-01-18  8:43     ` [19/21] " Heiko Carstens
2019-01-18  8:43     ` [PATCH 19/21] " Heiko Carstens
2019-01-18  8:43     ` Heiko Carstens
2019-01-18  8:43     ` Heiko Carstens
2019-01-18 18:02   ` Paul Burton
2019-01-18 18:02   ` Paul Burton
2019-01-18 18:02     ` [OpenRISC] " Paul Burton
2019-01-18 18:02     ` Paul Burton
2019-01-18 18:02     ` Paul Burton
2019-01-18 18:02     ` Paul Burton
2019-01-18 18:02     ` Paul Burton
2019-01-16 13:44 ` Mike Rapoport
2019-01-16 13:44 ` [PATCH 20/21] memblock: memblock_alloc_try_nid: don't panic Mike Rapoport
2019-01-16 13:44   ` [OpenRISC] " Mike Rapoport
2019-01-16 13:44   ` Mike Rapoport
2019-01-16 13:44   ` Mike Rapoport
2019-01-16 13:44   ` [20/21] " Mike Rapoport
2019-01-16 13:44   ` [PATCH 20/21] " Mike Rapoport
2019-01-16 13:44   ` Mike Rapoport
2019-01-16 13:44   ` Mike Rapoport
2019-01-16 13:44 ` Mike Rapoport
2019-01-16 13:44 ` [PATCH 21/21] memblock: drop memblock_alloc_*_nopanic() variants Mike Rapoport
2019-01-16 13:44   ` [OpenRISC] " Mike Rapoport
2019-01-16 13:44   ` Mike Rapoport
2019-01-16 13:44   ` Mike Rapoport
2019-01-16 13:44   ` [21/21] " Mike Rapoport
2019-01-16 13:44   ` [PATCH 21/21] " Mike Rapoport
2019-01-16 13:44   ` Mike Rapoport
2019-01-16 13:44   ` Mike Rapoport
2019-01-17  9:28   ` Petr Mladek
2019-01-17  9:28     ` [OpenRISC] " Petr Mladek
2019-01-17  9:28     ` Petr Mladek
2019-01-17  9:28     ` Petr Mladek
2019-01-17  9:28     ` [21/21] " Petr Mladek
2019-01-17  9:28     ` [PATCH 21/21] " Petr Mladek
2019-01-17  9:28     ` Petr Mladek
2019-01-17  9:28     ` Petr Mladek
2019-01-17  9:28   ` Petr Mladek
2019-01-18  8:42   ` Greg Kroah-Hartman
2019-01-18  8:42     ` Greg Kroah-Hartman
2019-01-18  8:42     ` [OpenRISC] " Greg Kroah-Hartman
2019-01-18  8:42     ` Greg Kroah-Hartman
2019-01-18  8:42     ` Greg Kroah-Hartman
2019-01-18  8:42     ` [21/21] " Greg Kroah-Hartman
2019-01-18  8:42     ` [PATCH 21/21] " Greg Kroah-Hartman
2019-01-18  8:42     ` Greg Kroah-Hartman
2019-01-18  8:42     ` Greg Kroah-Hartman
2019-01-18  8:42   ` Greg Kroah-Hartman
2019-01-16 13:44 ` Mike Rapoport

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