From: Sasha Levin <sashal@kernel.org>
To: linux-kernel@vger.kernel.org, stable@vger.kernel.org
Cc: Junxiao Bi <junxiao.bi@oracle.com>,
Sumit Saxena <sumit.saxena@broadcom.com>,
"Martin K . Petersen" <martin.petersen@oracle.com>,
Sasha Levin <sashal@kernel.org>,
megaraidlinux.pdl@broadcom.com, linux-scsi@vger.kernel.org
Subject: [PATCH AUTOSEL 5.2 64/76] scsi: megaraid_sas: fix panic on loading firmware crashdump
Date: Fri, 2 Aug 2019 09:19:38 -0400 [thread overview]
Message-ID: <20190802131951.11600-64-sashal@kernel.org> (raw)
In-Reply-To: <20190802131951.11600-1-sashal@kernel.org>
From: Junxiao Bi <junxiao.bi@oracle.com>
[ Upstream commit 3b5f307ef3cb5022bfe3c8ca5b8f2114d5bf6c29 ]
While loading fw crashdump in function fw_crash_buffer_show(), left bytes
in one dma chunk was not checked, if copying size over it, overflow access
will cause kernel panic.
Signed-off-by: Junxiao Bi <junxiao.bi@oracle.com>
Acked-by: Sumit Saxena <sumit.saxena@broadcom.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/scsi/megaraid/megaraid_sas_base.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/scsi/megaraid/megaraid_sas_base.c b/drivers/scsi/megaraid/megaraid_sas_base.c
index 7237114a1d534..5f30016e9b64f 100644
--- a/drivers/scsi/megaraid/megaraid_sas_base.c
+++ b/drivers/scsi/megaraid/megaraid_sas_base.c
@@ -3045,6 +3045,7 @@ megasas_fw_crash_buffer_show(struct device *cdev,
u32 size;
unsigned long buff_addr;
unsigned long dmachunk = CRASH_DMA_BUF_SIZE;
+ unsigned long chunk_left_bytes;
unsigned long src_addr;
unsigned long flags;
u32 buff_offset;
@@ -3070,6 +3071,8 @@ megasas_fw_crash_buffer_show(struct device *cdev,
}
size = (instance->fw_crash_buffer_size * dmachunk) - buff_offset;
+ chunk_left_bytes = dmachunk - (buff_offset % dmachunk);
+ size = (size > chunk_left_bytes) ? chunk_left_bytes : size;
size = (size >= PAGE_SIZE) ? (PAGE_SIZE - 1) : size;
src_addr = (unsigned long)instance->crash_buf[buff_offset / dmachunk] +
--
2.20.1
next prev parent reply other threads:[~2019-08-02 13:34 UTC|newest]
Thread overview: 78+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-08-02 13:18 [PATCH AUTOSEL 5.2 01/76] powerpc: fix off by one in max_zone_pfn initialization for ZONE_DMA Sasha Levin
2019-08-02 13:18 ` [PATCH AUTOSEL 5.2 02/76] netfilter: nfnetlink: avoid deadlock due to synchronous request_module Sasha Levin
2019-08-02 13:18 ` [PATCH AUTOSEL 5.2 03/76] vfio-ccw: Set pa_nr to 0 if memory allocation fails for pa_iova_pfn Sasha Levin
2019-08-02 13:18 ` [PATCH AUTOSEL 5.2 04/76] vfio-ccw: Don't call cp_free if we are processing a channel program Sasha Levin
2019-08-02 13:18 ` [PATCH AUTOSEL 5.2 05/76] netfilter: Fix rpfilter dropping vrf packets by mistake Sasha Levin
2019-08-02 13:18 ` [PATCH AUTOSEL 5.2 06/76] netfilter: nf_tables: fix module autoload for redir Sasha Levin
2019-08-02 13:18 ` [PATCH AUTOSEL 5.2 07/76] netfilter: conntrack: always store window size un-scaled Sasha Levin
2019-08-02 13:18 ` [PATCH AUTOSEL 5.2 08/76] netfilter: nft_hash: fix symhash with modulus one Sasha Levin
2019-08-02 13:18 ` [PATCH AUTOSEL 5.2 09/76] scripts/sphinx-pre-install: fix script for RHEL/CentOS Sasha Levin
2019-08-02 13:18 ` [PATCH AUTOSEL 5.2 10/76] scripts/sphinx-pre-install: don't use LaTeX with CentOS 7 Sasha Levin
2019-08-02 13:18 ` [PATCH AUTOSEL 5.2 11/76] scripts/sphinx-pre-install: fix latexmk dependencies Sasha Levin
2019-08-02 13:18 ` [PATCH AUTOSEL 5.2 12/76] rq-qos: don't reset has_sleepers on spurious wakeups Sasha Levin
2019-08-02 13:18 ` [PATCH AUTOSEL 5.2 13/76] rq-qos: set ourself TASK_UNINTERRUPTIBLE after we schedule Sasha Levin
2019-08-02 13:18 ` [PATCH AUTOSEL 5.2 14/76] rq-qos: use a mb for got_token Sasha Levin
2019-08-02 13:18 ` [PATCH AUTOSEL 5.2 15/76] netfilter: nf_tables: Support auto-loading for inet nat Sasha Levin
2019-08-02 13:18 ` [PATCH AUTOSEL 5.2 16/76] drm/amd/display: No audio endpoint for Dell MST display Sasha Levin
2019-08-02 13:18 ` [PATCH AUTOSEL 5.2 17/76] drm/amd/display: Clock does not lower in Updateplanes Sasha Levin
2019-08-02 13:18 ` [PATCH AUTOSEL 5.2 18/76] drm/amd/display: Wait for backlight programming completion in set backlight level Sasha Levin
2019-08-02 13:18 ` [PATCH AUTOSEL 5.2 19/76] drm/amd/display: fix DMCU hang when going into Modern Standby Sasha Levin
2019-08-02 13:18 ` [PATCH AUTOSEL 5.2 20/76] drm/amd/display: use encoder's engine id to find matched free audio device Sasha Levin
2019-08-02 13:18 ` [PATCH AUTOSEL 5.2 21/76] drm/amd/display: put back front end initialization sequence Sasha Levin
2019-08-02 13:18 ` [PATCH AUTOSEL 5.2 22/76] drm/amd/display: allocate 4 ddc engines for RV2 Sasha Levin
2019-08-02 13:18 ` [PATCH AUTOSEL 5.2 23/76] drm/amd/display: Fix dc_create failure handling and 666 color depths Sasha Levin
2019-08-02 13:18 ` [PATCH AUTOSEL 5.2 24/76] drm/amd/display: Only enable audio if speaker allocation exists Sasha Levin
2019-08-02 13:18 ` [PATCH AUTOSEL 5.2 25/76] drm/amd/display: Increase size of audios array Sasha Levin
2019-08-02 13:19 ` [PATCH AUTOSEL 5.2 26/76] iscsi_ibft: make ISCSI_IBFT dependson ACPI instead of ISCSI_IBFT_FIND Sasha Levin
2019-08-02 13:19 ` [PATCH AUTOSEL 5.2 27/76] nl80211: fix NL80211_HE_MAX_CAPABILITY_LEN Sasha Levin
2019-08-02 13:19 ` [PATCH AUTOSEL 5.2 28/76] mac80211: fix possible memory leak in ieee80211_assign_beacon Sasha Levin
2019-08-02 13:19 ` [PATCH AUTOSEL 5.2 29/76] mac80211: don't warn about CW params when not using them Sasha Levin
2019-08-02 13:19 ` [PATCH AUTOSEL 5.2 30/76] allocate_flower_entry: should check for null deref Sasha Levin
2019-08-02 13:19 ` [PATCH AUTOSEL 5.2 31/76] hwmon: (occ) Fix division by zero issue Sasha Levin
2019-08-02 13:19 ` [PATCH AUTOSEL 5.2 32/76] hwmon: (nct6775) Fix register address and added missed tolerance for nct6106 Sasha Levin
2019-08-02 13:19 ` [PATCH AUTOSEL 5.2 33/76] ARM: dts: imx6ul: fix clock frequency property name of I2C buses Sasha Levin
2019-08-02 13:19 ` [PATCH AUTOSEL 5.2 34/76] x86/mm: Check for pfn instead of page in vmalloc_sync_one() Sasha Levin
2019-08-02 13:19 ` [PATCH AUTOSEL 5.2 35/76] x86/mm: Sync also unmappings in vmalloc_sync_all() Sasha Levin
2019-08-02 13:19 ` [PATCH AUTOSEL 5.2 36/76] mm/vmalloc: Sync unmappings in __purge_vmap_area_lazy() Sasha Levin
2019-08-02 13:19 ` [PATCH AUTOSEL 5.2 37/76] powerpc/papr_scm: Force a scm-unbind if initial scm-bind fails Sasha Levin
2019-08-02 13:19 ` [PATCH AUTOSEL 5.2 38/76] arm64: Force SSBS on context switch Sasha Levin
2019-08-02 13:19 ` [PATCH AUTOSEL 5.2 39/76] arm64: entry: SP Alignment Fault doesn't write to FAR_EL1 Sasha Levin
2019-08-02 13:19 ` [PATCH AUTOSEL 5.2 40/76] iommu/vt-d: Check if domain->pgd was allocated Sasha Levin
2019-08-02 13:19 ` [PATCH AUTOSEL 5.2 41/76] drm/msm/dpu: Correct dpu encoder spinlock initialization Sasha Levin
2019-08-02 13:19 ` [PATCH AUTOSEL 5.2 42/76] drm/msm: stop abusing dma_map/unmap for cache Sasha Levin
2019-08-03 0:14 ` Rob Clark
2019-08-14 2:03 ` Sasha Levin
2019-08-02 13:19 ` [PATCH AUTOSEL 5.2 43/76] drm: silence variable 'conn' set but not used Sasha Levin
2019-08-02 13:19 ` [PATCH AUTOSEL 5.2 44/76] arm64: dts: imx8mm: Correct SAI3 RXC/TXFS pin's mux option #1 Sasha Levin
2019-08-02 13:19 ` [PATCH AUTOSEL 5.2 45/76] arm64: dts: imx8mq: fix SAI compatible Sasha Levin
2019-08-02 13:19 ` [PATCH AUTOSEL 5.2 46/76] cpufreq/pasemi: fix use-after-free in pas_cpufreq_cpu_init() Sasha Levin
2019-08-02 13:19 ` [PATCH AUTOSEL 5.2 47/76] s390/qdio: add sanity checks to the fast-requeue path Sasha Levin
2019-08-02 13:19 ` [PATCH AUTOSEL 5.2 48/76] ALSA: compress: Fix regression on compressed capture streams Sasha Levin
2019-08-02 13:19 ` [PATCH AUTOSEL 5.2 49/76] ALSA: compress: Prevent bypasses of set_params Sasha Levin
2019-08-02 13:19 ` [PATCH AUTOSEL 5.2 50/76] ALSA: compress: Don't allow paritial drain operations on capture streams Sasha Levin
2019-08-02 13:19 ` [PATCH AUTOSEL 5.2 51/76] ALSA: compress: Be more restrictive about when a drain is allowed Sasha Levin
2019-08-02 13:19 ` [PATCH AUTOSEL 5.2 52/76] perf script: Fix off by one in brstackinsn IPC computation Sasha Levin
2019-08-02 13:19 ` [PATCH AUTOSEL 5.2 53/76] perf tools: Fix proper buffer size for feature processing Sasha Levin
2019-08-02 13:19 ` [PATCH AUTOSEL 5.2 54/76] perf stat: Fix segfault for event group in repeat mode Sasha Levin
2019-08-02 13:19 ` [PATCH AUTOSEL 5.2 55/76] perf session: Fix loading of compressed data split across adjacent records Sasha Levin
2019-08-02 13:19 ` [PATCH AUTOSEL 5.2 56/76] perf probe: Avoid calling freeing routine multiple times for same pointer Sasha Levin
2019-08-02 13:19 ` [PATCH AUTOSEL 5.2 57/76] drbd: dynamically allocate shash descriptor Sasha Levin
2019-08-02 13:19 ` [PATCH AUTOSEL 5.2 58/76] ACPI/IORT: Fix off-by-one check in iort_dev_find_its_id() Sasha Levin
2019-08-02 13:19 ` [PATCH AUTOSEL 5.2 59/76] nvme: ignore subnqn for ADATA SX6000LNP Sasha Levin
2019-08-02 13:19 ` [PATCH AUTOSEL 5.2 60/76] nvme: fix memory leak caused by incorrect subsystem free Sasha Levin
2019-08-02 13:19 ` [PATCH AUTOSEL 5.2 61/76] nvme: fix multipath crash when ANA is deactivated Sasha Levin
2019-08-02 13:19 ` [PATCH AUTOSEL 5.2 62/76] ARM: davinci: fix sleep.S build error on ARMv4 Sasha Levin
2019-08-02 13:19 ` [PATCH AUTOSEL 5.2 63/76] ARM: dts: bcm: bcm47094: add missing #cells for mdio-bus-mux Sasha Levin
2019-08-02 13:19 ` Sasha Levin [this message]
2019-08-02 13:19 ` [PATCH AUTOSEL 5.2 65/76] scsi: ibmvfc: fix WARN_ON during event pool release Sasha Levin
2019-08-02 13:19 ` [PATCH AUTOSEL 5.2 66/76] scsi: scsi_dh_alua: always use a 2 second delay before retrying RTPG Sasha Levin
2019-08-02 13:19 ` [PATCH AUTOSEL 5.2 67/76] test_firmware: fix a memory leak bug Sasha Levin
2019-08-02 13:19 ` [PATCH AUTOSEL 5.2 68/76] sched/fair: Don't free p->numa_faults with concurrent readers Sasha Levin
2019-08-02 13:19 ` [PATCH AUTOSEL 5.2 69/76] sched/fair: Use RCU accessors consistently for ->numa_group Sasha Levin
2019-08-02 13:19 ` [PATCH AUTOSEL 5.2 70/76] tty/ldsem, locking/rwsem: Add missing ACQUIRE to read_failed sleep loop Sasha Levin
2019-08-02 13:19 ` [PATCH AUTOSEL 5.2 71/76] perf/x86/intel: Fix SLOTS PEBS event constraint Sasha Levin
2019-08-02 13:19 ` [PATCH AUTOSEL 5.2 72/76] perf/x86/intel: Fix invalid Bit 13 for Icelake MSR_OFFCORE_RSP_x register Sasha Levin
2019-08-02 13:19 ` [PATCH AUTOSEL 5.2 73/76] perf/x86: Apply more accurate check on hypervisor platform Sasha Levin
2019-08-02 13:19 ` [PATCH AUTOSEL 5.2 74/76] perf/core: Fix creating kernel counters for PMUs that override event->cpu Sasha Levin
2019-08-02 13:19 ` [PATCH AUTOSEL 5.2 75/76] s390/dma: provide proper ARCH_ZONE_DMA_BITS value Sasha Levin
2019-08-02 13:19 ` [PATCH AUTOSEL 5.2 76/76] gen_compile_commands: lower the entry count threshold Sasha Levin
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