From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To: linux-kernel@vger.kernel.org
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
stable@vger.kernel.org, "Erhard F." <erhard_f@mailbox.org>,
Christophe Leroy <christophe.leroy@csgroup.eu>,
Michael Ellerman <mpe@ellerman.id.au>
Subject: [PATCH 5.8 33/38] powerpc/kasan: Fix shadow pages allocation failure
Date: Mon, 10 Aug 2020 17:19:23 +0200 [thread overview]
Message-ID: <20200810151805.545372811@linuxfoundation.org> (raw)
In-Reply-To: <20200810151803.920113428@linuxfoundation.org>
From: Christophe Leroy <christophe.leroy@csgroup.eu>
commit 41ea93cf7ba4e0f0cc46ebfdda8b6ff27c67bc91 upstream.
Doing kasan pages allocation in MMU_init is too early, kernel doesn't
have access yet to the entire memory space and memblock_alloc() fails
when the kernel is a bit big.
Do it from kasan_init() instead.
Fixes: 2edb16efc899 ("powerpc/32: Add KASAN support")
Fixes: d2a91cef9bbd ("powerpc/kasan: Fix shadow pages allocation failure")
Cc: stable@vger.kernel.org
Reported-by: Erhard F. <erhard_f@mailbox.org>
Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://bugzilla.kernel.org/show_bug.cgi?id=208181
Link: https://lore.kernel.org/r/63048fcea8a1c02f75429ba3152f80f7853f87fc.1593690707.git.christophe.leroy@csgroup.eu
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
arch/powerpc/mm/kasan/kasan_init_32.c | 25 +++++++++++++------------
1 file changed, 13 insertions(+), 12 deletions(-)
--- a/arch/powerpc/mm/kasan/kasan_init_32.c
+++ b/arch/powerpc/mm/kasan/kasan_init_32.c
@@ -120,11 +120,24 @@ static void __init kasan_unmap_early_sha
void __init kasan_mmu_init(void)
{
int ret;
+
+ if (early_mmu_has_feature(MMU_FTR_HPTE_TABLE) ||
+ IS_ENABLED(CONFIG_KASAN_VMALLOC)) {
+ ret = kasan_init_shadow_page_tables(KASAN_SHADOW_START, KASAN_SHADOW_END);
+
+ if (ret)
+ panic("kasan: kasan_init_shadow_page_tables() failed");
+ }
+}
+
+void __init kasan_init(void)
+{
struct memblock_region *reg;
for_each_memblock(memory, reg) {
phys_addr_t base = reg->base;
phys_addr_t top = min(base + reg->size, total_lowmem);
+ int ret;
if (base >= top)
continue;
@@ -134,18 +147,6 @@ void __init kasan_mmu_init(void)
panic("kasan: kasan_init_region() failed");
}
- if (early_mmu_has_feature(MMU_FTR_HPTE_TABLE) ||
- IS_ENABLED(CONFIG_KASAN_VMALLOC)) {
- ret = kasan_init_shadow_page_tables(KASAN_SHADOW_START, KASAN_SHADOW_END);
-
- if (ret)
- panic("kasan: kasan_init_shadow_page_tables() failed");
- }
-
-}
-
-void __init kasan_init(void)
-{
kasan_remap_early_shadow_ro();
clear_page(kasan_early_shadow_page);
next prev parent reply other threads:[~2020-08-10 15:21 UTC|newest]
Thread overview: 46+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-08-10 15:18 [PATCH 5.8 00/38] 5.8.1-rc1 review Greg Kroah-Hartman
2020-08-10 15:18 ` [PATCH 5.8 01/38] scsi: ufs: Fix and simplify setup_xfer_req variant operation Greg Kroah-Hartman
2020-08-10 15:18 ` [PATCH 5.8 02/38] USB: serial: qcserial: add EM7305 QDL product ID Greg Kroah-Hartman
2020-08-10 15:18 ` [PATCH 5.8 03/38] USB: iowarrior: fix up report size handling for some devices Greg Kroah-Hartman
2020-08-10 15:18 ` [PATCH 5.8 04/38] usb: xhci: define IDs for various ASMedia host controllers Greg Kroah-Hartman
2020-08-10 15:18 ` [PATCH 5.8 05/38] usb: xhci: Fix ASMedia ASM1142 DMA addressing Greg Kroah-Hartman
2020-08-10 15:18 ` [PATCH 5.8 06/38] Revert "ALSA: hda: call runtime_allow() for all hda controllers" Greg Kroah-Hartman
2020-08-10 15:18 ` [PATCH 5.8 07/38] ALSA: hda/realtek: Add alc269/alc662 pin-tables for Loongson-3 laptops Greg Kroah-Hartman
2020-08-10 15:18 ` [PATCH 5.8 08/38] ALSA: hda/ca0132 - Add new quirk ID for Recon3D Greg Kroah-Hartman
2020-08-10 15:18 ` [PATCH 5.8 09/38] ALSA: hda/ca0132 - Fix ZxR Headphone gain control get value Greg Kroah-Hartman
2020-08-10 15:19 ` [PATCH 5.8 10/38] ALSA: hda/ca0132 - Fix AE-5 microphone selection commands Greg Kroah-Hartman
2020-08-10 15:19 ` [PATCH 5.8 11/38] ALSA: seq: oss: Serialize ioctls Greg Kroah-Hartman
2020-08-10 15:19 ` [PATCH 5.8 12/38] staging: android: ashmem: Fix lockdep warning for write operation Greg Kroah-Hartman
2020-08-10 15:19 ` [PATCH 5.8 13/38] staging: rtl8712: handle firmware load failure Greg Kroah-Hartman
2020-08-10 15:19 ` [PATCH 5.8 14/38] Staging: rtl8188eu: rtw_mlme: Fix uninitialized variable authmode Greg Kroah-Hartman
2020-08-10 15:19 ` [PATCH 5.8 15/38] Bluetooth: Fix slab-out-of-bounds read in hci_extended_inquiry_result_evt() Greg Kroah-Hartman
2020-08-10 15:19 ` [PATCH 5.8 16/38] Bluetooth: Prevent out-of-bounds read in hci_inquiry_result_evt() Greg Kroah-Hartman
2020-08-10 15:19 ` [PATCH 5.8 17/38] Bluetooth: Prevent out-of-bounds read in hci_inquiry_result_with_rssi_evt() Greg Kroah-Hartman
2020-08-10 15:19 ` [PATCH 5.8 18/38] omapfb: dss: Fix max fclk divider for omap36xx Greg Kroah-Hartman
2020-08-10 15:19 ` [PATCH 5.8 19/38] binder: Prevent context manager from incrementing ref 0 Greg Kroah-Hartman
2020-08-10 15:19 ` [PATCH 5.8 20/38] Smack: fix use-after-free in smk_write_relabel_self() Greg Kroah-Hartman
2020-08-10 15:19 ` [PATCH 5.8 21/38] scripts: add dummy report mode to add_namespace.cocci Greg Kroah-Hartman
2020-08-10 15:19 ` [PATCH 5.8 22/38] lkdtm/heap: Avoid edge and middle of slabs Greg Kroah-Hartman
2020-08-10 15:19 ` [PATCH 5.8 23/38] vgacon: Fix for missing check in scrollback handling Greg Kroah-Hartman
2020-08-10 15:19 ` [PATCH 5.8 24/38] mtd: properly check all write ioctls for permissions Greg Kroah-Hartman
2020-08-10 15:19 ` [PATCH 5.8 25/38] leds: wm831x-status: fix use-after-free on unbind Greg Kroah-Hartman
2020-08-10 15:19 ` [PATCH 5.8 26/38] leds: lm36274: " Greg Kroah-Hartman
2020-08-10 15:19 ` [PATCH 5.8 27/38] leds: da903x: " Greg Kroah-Hartman
2020-08-10 15:19 ` [PATCH 5.8 28/38] leds: lm3533: " Greg Kroah-Hartman
2020-08-10 15:19 ` [PATCH 5.8 29/38] leds: 88pm860x: " Greg Kroah-Hartman
2020-08-10 15:19 ` [PATCH 5.8 30/38] gpio: max77620: Fix missing release of interrupt Greg Kroah-Hartman
2020-08-10 15:19 ` [PATCH 5.8 31/38] xattr: break delegations in {set,remove}xattr Greg Kroah-Hartman
2020-08-10 15:19 ` [PATCH 5.8 32/38] Revert "powerpc/kasan: Fix shadow pages allocation failure" Greg Kroah-Hartman
2020-08-10 15:19 ` Greg Kroah-Hartman [this message]
2020-08-10 15:19 ` [PATCH 5.8 34/38] PCI: tegra: Revert tegra124 raw_violation_fixup Greg Kroah-Hartman
2020-08-10 15:19 ` [PATCH 5.8 35/38] ima: move APPRAISE_BOOTPARAM dependency on ARCH_POLICY to runtime Greg Kroah-Hartman
2020-08-10 15:19 ` [PATCH 5.8 36/38] random32: move the pseudo-random 32-bit definitions to prandom.h Greg Kroah-Hartman
2020-08-10 15:19 ` [PATCH 5.8 37/38] random: random.h should include archrandom.h, not the other way around Greg Kroah-Hartman
2020-08-10 15:19 ` [PATCH 5.8 38/38] arm64: kaslr: Use standard early random function Greg Kroah-Hartman
2020-08-10 23:04 ` [PATCH 5.8 00/38] 5.8.1-rc1 review Shuah Khan
2020-08-11 16:19 ` Greg Kroah-Hartman
2020-08-11 6:29 ` Naresh Kamboju
2020-08-11 16:20 ` Greg Kroah-Hartman
2020-08-11 10:54 ` Puranjay Mohan
2020-08-11 14:24 ` Guenter Roeck
2020-08-11 16:20 ` Greg Kroah-Hartman
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