From: Sasha Levin <sashal@kernel.org>
To: linux-kernel@vger.kernel.org, stable@vger.kernel.org
Cc: Ricardo Ribalda <ribalda@chromium.org>,
AngeloGioacchino Del Regno
<angelogioacchino.delregno@collabora.com>,
Robin Murphy <robin.murphy@arm.com>,
Joerg Roedel <jroedel@suse.de>, Sasha Levin <sashal@kernel.org>,
yong.wu@mediatek.com, joro@8bytes.org, will@kernel.org,
matthias.bgg@gmail.com, iommu@lists.linux.dev,
linux-mediatek@lists.infradead.org,
linux-arm-kernel@lists.infradead.org
Subject: [PATCH AUTOSEL 6.0 20/27] iommu/mediatek: Fix crash on isr after kexec()
Date: Tue, 27 Dec 2022 15:33:35 -0500 [thread overview]
Message-ID: <20221227203342.1213918-20-sashal@kernel.org> (raw)
In-Reply-To: <20221227203342.1213918-1-sashal@kernel.org>
From: Ricardo Ribalda <ribalda@chromium.org>
[ Upstream commit 00ef8885a945c37551547d8ac8361cacd20c4e42 ]
If the system is rebooted via isr(), the IRQ handler might
be triggered before the domain is initialized. Resulting on
an invalid memory access error.
Fix:
[ 0.500930] Unable to handle kernel read from unreadable memory at virtual address 0000000000000070
[ 0.501166] Call trace:
[ 0.501174] report_iommu_fault+0x28/0xfc
[ 0.501180] mtk_iommu_isr+0x10c/0x1c0
Signed-off-by: Ricardo Ribalda <ribalda@chromium.org>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Reviewed-by: Robin Murphy <robin.murphy@arm.com>
Link: https://lore.kernel.org/r/20221125-mtk-iommu-v2-0-e168dff7d43e@chromium.org
[ joro: Fixed spelling in commit message ]
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/iommu/mtk_iommu.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/iommu/mtk_iommu.c b/drivers/iommu/mtk_iommu.c
index 7e363b1f24df..b5ccdc134e84 100644
--- a/drivers/iommu/mtk_iommu.c
+++ b/drivers/iommu/mtk_iommu.c
@@ -452,7 +452,7 @@ static irqreturn_t mtk_iommu_isr(int irq, void *dev_id)
fault_larb = data->plat_data->larbid_remap[fault_larb][sub_comm];
}
- if (report_iommu_fault(&dom->domain, bank->parent_dev, fault_iova,
+ if (!dom || report_iommu_fault(&dom->domain, bank->parent_dev, fault_iova,
write ? IOMMU_FAULT_WRITE : IOMMU_FAULT_READ)) {
dev_err_ratelimited(
bank->parent_dev,
--
2.35.1
next prev parent reply other threads:[~2022-12-27 20:38 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-12-27 20:33 [PATCH AUTOSEL 6.0 01/27] fs/ntfs3: Validate BOOT record_size Sasha Levin
2022-12-27 20:33 ` [PATCH AUTOSEL 6.0 02/27] fs/ntfs3: Add overflow check for attribute size Sasha Levin
2022-12-27 20:33 ` [PATCH AUTOSEL 6.0 03/27] fs/ntfs3: Validate data run offset Sasha Levin
2022-12-27 20:33 ` [PATCH AUTOSEL 6.0 04/27] fs/ntfs3: Add null pointer check to attr_load_runs_vcn Sasha Levin
2022-12-27 20:33 ` [PATCH AUTOSEL 6.0 05/27] fs/ntfs3: Fix memory leak on ntfs_fill_super() error path Sasha Levin
2022-12-27 20:33 ` [PATCH AUTOSEL 6.0 06/27] fs/ntfs3: Add null pointer check for inode operations Sasha Levin
2022-12-27 20:33 ` [PATCH AUTOSEL 6.0 07/27] fs/ntfs3: Validate attribute name offset Sasha Levin
2022-12-27 20:33 ` [PATCH AUTOSEL 6.0 08/27] fs/ntfs3: Validate buffer length while parsing index Sasha Levin
2022-12-27 20:33 ` [PATCH AUTOSEL 6.0 09/27] fs/ntfs3: Validate resident attribute name Sasha Levin
2022-12-27 20:33 ` [PATCH AUTOSEL 6.0 10/27] fs/ntfs3: Fix slab-out-of-bounds read in run_unpack Sasha Levin
2022-12-27 20:33 ` [PATCH AUTOSEL 6.0 11/27] soundwire: dmi-quirks: add quirk variant for LAPBC710 NUC15 Sasha Levin
2022-12-27 20:33 ` [PATCH AUTOSEL 6.0 12/27] phy: sun4i-usb: Introduce port2 SIDDQ quirk Sasha Levin
2022-12-27 20:33 ` [PATCH AUTOSEL 6.0 13/27] phy: sun4i-usb: Add support for the H616 USB PHY Sasha Levin
2022-12-27 20:33 ` [PATCH AUTOSEL 6.0 14/27] fs/ntfs3: Validate index root when initialize NTFS security Sasha Levin
2022-12-27 20:33 ` [PATCH AUTOSEL 6.0 15/27] fs/ntfs3: Use __GFP_NOWARN allocation at wnd_init() Sasha Levin
2022-12-27 20:33 ` [PATCH AUTOSEL 6.0 16/27] fs/ntfs3: Use __GFP_NOWARN allocation at ntfs_fill_super() Sasha Levin
2022-12-27 20:33 ` [PATCH AUTOSEL 6.0 17/27] fs/ntfs3: Delete duplicate condition in ntfs_read_mft() Sasha Levin
2022-12-27 20:33 ` [PATCH AUTOSEL 6.0 18/27] fs/ntfs3: Fix slab-out-of-bounds in r_page Sasha Levin
2022-12-27 20:33 ` [PATCH AUTOSEL 6.0 19/27] objtool: Fix SEGFAULT Sasha Levin
2022-12-27 20:33 ` Sasha Levin [this message]
2022-12-27 20:33 ` [PATCH AUTOSEL 6.0 21/27] powerpc/rtas: avoid device tree lookups in rtas_os_term() Sasha Levin
2022-12-27 20:33 ` [PATCH AUTOSEL 6.0 22/27] powerpc/rtas: avoid scheduling " Sasha Levin
2022-12-27 20:33 ` [PATCH AUTOSEL 6.0 23/27] rtc: msc313: Fix function prototype mismatch in msc313_rtc_probe() Sasha Levin
2022-12-27 20:33 ` [PATCH AUTOSEL 6.0 24/27] kprobes: kretprobe events missing on 2-core KVM guest Sasha Levin
2022-12-27 20:33 ` [PATCH AUTOSEL 6.0 25/27] powerpc/msi: Fix deassociation of MSI descriptors Sasha Levin
2022-12-27 20:33 ` [PATCH AUTOSEL 6.0 26/27] HID: multitouch: fix Asus ExpertBook P2 P2451FA trackpoint Sasha Levin
2022-12-27 20:33 ` [PATCH AUTOSEL 6.0 27/27] HID: plantronics: Additional PIDs for double volume key presses quirk Sasha Levin
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