From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To: linux-kernel@vger.kernel.org
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
stable@vger.kernel.org,
Christian Borntraeger <borntraeger@de.ibm.com>,
Frank Haverkamp <haver@linux.vnet.ibm.com>
Subject: [PATCH 4.20 57/65] genwqe: Fix size check
Date: Fri, 11 Jan 2019 15:15:43 +0100 [thread overview]
Message-ID: <20190111131103.788169839@linuxfoundation.org> (raw)
In-Reply-To: <20190111131055.331350141@linuxfoundation.org>
4.20-stable review patch. If anyone has any objections, please let me know.
------------------
From: Christian Borntraeger <borntraeger@de.ibm.com>
commit fdd669684655c07dacbdb0d753fd13833de69a33 upstream.
Calling the test program genwqe_cksum with the default buffer size of
2MB triggers the following kernel warning on s390:
WARNING: CPU: 30 PID: 9311 at mm/page_alloc.c:3189 __alloc_pages_nodemask+0x45c/0xbe0
CPU: 30 PID: 9311 Comm: genwqe_cksum Kdump: loaded Not tainted 3.10.0-957.el7.s390x #1
task: 00000005e5d13980 ti: 00000005e7c6c000 task.ti: 00000005e7c6c000
Krnl PSW : 0704c00180000000 00000000002780ac (__alloc_pages_nodemask+0x45c/0xbe0)
R:0 T:1 IO:1 EX:1 Key:0 M:1 W:0 P:0 AS:3 CC:0 PM:0 EA:3
Krnl GPRS: 00000000002932b8 0000000000b73d7c 0000000000000010 0000000000000009
0000000000000041 00000005e7c6f9b8 0000000000000001 00000000000080d0
0000000000000000 0000000000b70500 0000000000000001 0000000000000000
0000000000b70528 00000000007682c0 0000000000277df2 00000005e7c6f9a0
Krnl Code: 000000000027809e: de7195001000 ed 1280(114,%r9),0(%r1)
00000000002780a4: a774fead brc 7,277dfe
#00000000002780a8: a7f40001 brc 15,2780aa
>00000000002780ac: 92011000 mvi 0(%r1),1
00000000002780b0: a7f4fea7 brc 15,277dfe
00000000002780b4: 9101c6b6 tm 1718(%r12),1
00000000002780b8: a784ff3a brc 8,277f2c
00000000002780bc: a7f4fe2e brc 15,277d18
Call Trace:
([<0000000000277df2>] __alloc_pages_nodemask+0x1a2/0xbe0)
[<000000000013afae>] s390_dma_alloc+0xfe/0x310
[<000003ff8065f362>] __genwqe_alloc_consistent+0xfa/0x148 [genwqe_card]
[<000003ff80658f7a>] genwqe_mmap+0xca/0x248 [genwqe_card]
[<00000000002b2712>] mmap_region+0x4e2/0x778
[<00000000002b2c54>] do_mmap+0x2ac/0x3e0
[<0000000000292d7e>] vm_mmap_pgoff+0xd6/0x118
[<00000000002b081c>] SyS_mmap_pgoff+0xdc/0x268
[<00000000002b0a34>] SyS_old_mmap+0x8c/0xb0
[<000000000074e518>] sysc_tracego+0x14/0x1e
[<000003ffacf87dc6>] 0x3ffacf87dc6
turns out the check in __genwqe_alloc_consistent uses "> MAX_ORDER"
while the mm code uses ">= MAX_ORDER". Fix genwqe.
Cc: stable@vger.kernel.org
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Frank Haverkamp <haver@linux.vnet.ibm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/misc/genwqe/card_utils.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/misc/genwqe/card_utils.c
+++ b/drivers/misc/genwqe/card_utils.c
@@ -215,7 +215,7 @@ u32 genwqe_crc32(u8 *buff, size_t len, u
void *__genwqe_alloc_consistent(struct genwqe_dev *cd, size_t size,
dma_addr_t *dma_handle)
{
- if (get_order(size) > MAX_ORDER)
+ if (get_order(size) >= MAX_ORDER)
return NULL;
return dma_zalloc_coherent(&cd->pci_dev->dev, size, dma_handle,
next prev parent reply other threads:[~2019-01-11 14:45 UTC|newest]
Thread overview: 75+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-01-11 14:14 [PATCH 4.20 00/65] 4.20.2-stable review Greg Kroah-Hartman
2019-01-11 14:14 ` [PATCH 4.20 01/65] scsi: zfcp: fix posting too many status read buffers leading to adapter shutdown Greg Kroah-Hartman
2019-01-11 14:14 ` [PATCH 4.20 02/65] scsi: lpfc: do not set queue->page_count to 0 if pc_sli4_params.wqpcnt is invalid Greg Kroah-Hartman
2019-01-11 14:14 ` [PATCH 4.20 03/65] fork: record start_time late Greg Kroah-Hartman
2019-01-11 14:14 ` [PATCH 4.20 04/65] zram: fix double free backing device Greg Kroah-Hartman
2019-01-11 14:14 ` [PATCH 4.20 05/65] hwpoison, memory_hotplug: allow hwpoisoned pages to be offlined Greg Kroah-Hartman
2019-01-11 14:14 ` [PATCH 4.20 06/65] mm, devm_memremap_pages: mark devm_memremap_pages() EXPORT_SYMBOL_GPL Greg Kroah-Hartman
2019-01-11 14:14 ` [PATCH 4.20 07/65] mm, devm_memremap_pages: kill mapping "System RAM" support Greg Kroah-Hartman
2019-01-11 14:14 ` [PATCH 4.20 08/65] mm, devm_memremap_pages: fix shutdown handling Greg Kroah-Hartman
2019-01-11 14:14 ` [PATCH 4.20 09/65] memcg, oom: notify on oom killer invocation from the charge path Greg Kroah-Hartman
2019-01-11 14:14 ` [PATCH 4.20 10/65] sunrpc: fix cache_head leak due to queued request Greg Kroah-Hartman
2019-01-11 14:14 ` [PATCH 4.20 11/65] sunrpc: use SVC_NET() in svcauth_gss_* functions Greg Kroah-Hartman
2019-01-11 14:14 ` [PATCH 4.20 12/65] mm, devm_memremap_pages: add MEMORY_DEVICE_PRIVATE support Greg Kroah-Hartman
2019-01-11 14:14 ` [PATCH 4.20 13/65] mm, hmm: use devm semantics for hmm_devmem_{add, remove} Greg Kroah-Hartman
2019-01-11 14:15 ` [PATCH 4.20 14/65] mm, hmm: replace hmm_devmem_pages_create() with devm_memremap_pages() Greg Kroah-Hartman
2019-01-11 14:15 ` [PATCH 4.20 15/65] mm, hmm: mark hmm_devmem_{add, add_resource} EXPORT_SYMBOL_GPL Greg Kroah-Hartman
2019-01-11 14:15 ` [PATCH 4.20 16/65] mm, swap: fix swapoff with KSM pages Greg Kroah-Hartman
2019-01-11 14:15 ` [PATCH 4.20 17/65] media: cx23885: only reset DMA on problematic CPUs Greg Kroah-Hartman
2019-01-11 14:15 ` [PATCH 4.20 18/65] ALSA: cs46xx: Potential NULL dereference in probe Greg Kroah-Hartman
2019-01-11 14:15 ` [PATCH 4.20 19/65] ALSA: usb-audio: Avoid access before bLength check in build_audio_procunit() Greg Kroah-Hartman
2019-01-11 14:15 ` [PATCH 4.20 20/65] ALSA: usb-audio: Check mixer unit descriptors more strictly Greg Kroah-Hartman
2019-01-11 14:15 ` [PATCH 4.20 21/65] ALSA: usb-audio: Fix an out-of-bound read in create_composite_quirks Greg Kroah-Hartman
2019-01-11 14:15 ` [PATCH 4.20 22/65] ALSA: usb-audio: Always check descriptor sizes in parser code Greg Kroah-Hartman
2019-01-11 14:15 ` [PATCH 4.20 23/65] srcu: Lock srcu_data structure in srcu_gp_start() Greg Kroah-Hartman
2019-01-11 14:15 ` [PATCH 4.20 24/65] driver core: Add missing dev->bus->need_parent_lock checks Greg Kroah-Hartman
2019-01-11 14:15 ` [PATCH 4.20 25/65] Fix failure path in alloc_pid() Greg Kroah-Hartman
2019-01-11 14:15 ` [PATCH 4.20 26/65] block: deactivate blk_stat timer in wbt_disable_default() Greg Kroah-Hartman
2019-01-11 14:15 ` [PATCH 4.20 27/65] block: mq-deadline: Fix write completion handling Greg Kroah-Hartman
2019-01-11 14:15 ` [PATCH 4.20 28/65] dm: do not allow readahead to limit IO size Greg Kroah-Hartman
2019-01-11 14:15 ` [PATCH 4.20 29/65] dlm: fixed memory leaks after failed ls_remove_names allocation Greg Kroah-Hartman
2019-01-11 14:15 ` [PATCH 4.20 30/65] dlm: possible memory leak on error path in create_lkb() Greg Kroah-Hartman
2019-01-11 14:15 ` [PATCH 4.20 31/65] dlm: lost put_lkb on error path in receive_convert() and receive_unlock() Greg Kroah-Hartman
2019-01-11 14:15 ` [PATCH 4.20 32/65] dlm: memory leaks on error path in dlm_user_request() Greg Kroah-Hartman
2019-01-11 14:15 ` [PATCH 4.20 33/65] gfs2: Get rid of potential double-freeing in gfs2_create_inode Greg Kroah-Hartman
2019-01-11 14:15 ` [PATCH 4.20 34/65] gfs2: Fix loop in gfs2_rbm_find Greg Kroah-Hartman
2019-01-11 14:15 ` [PATCH 4.20 35/65] b43: Fix error in cordic routine Greg Kroah-Hartman
2019-01-11 14:15 ` [PATCH 4.20 36/65] selinux: policydb - fix byte order and alignment issues Greg Kroah-Hartman
2019-01-11 14:15 ` [PATCH 4.20 37/65] PCI / PM: Allow runtime PM without callback functions Greg Kroah-Hartman
2019-01-11 14:15 ` [PATCH 4.20 38/65] lockd: Show pid of lockd for remote locks Greg Kroah-Hartman
2019-01-11 14:15 ` [PATCH 4.20 39/65] xprtrdma: Yet another double DMA-unmap Greg Kroah-Hartman
2019-01-11 14:15 ` [PATCH 4.20 40/65] nfsd4: zero-length WRITE should succeed Greg Kroah-Hartman
2019-01-11 14:15 ` [PATCH 4.20 41/65] Revert "powerpc/tm: Unset MSR[TS] if not recheckpointing" Greg Kroah-Hartman
2019-01-12 21:35 ` Christoph Biedl
2019-01-13 7:11 ` Greg Kroah-Hartman
2019-01-14 0:00 ` Michael Ellerman
2019-01-14 8:10 ` Greg Kroah-Hartman
2019-01-11 14:15 ` [PATCH 4.20 42/65] powerpc/tm: Set MSR[TS] just prior to recheckpoint Greg Kroah-Hartman
2019-01-11 14:15 ` [PATCH 4.20 43/65] iio: adc: qcom-spmi-adc5: Initialize prescale properly Greg Kroah-Hartman
2019-01-11 14:15 ` [PATCH 4.20 44/65] iio: dac: ad5686: fix bit shift read register Greg Kroah-Hartman
2019-01-11 14:15 ` [PATCH 4.20 45/65] 9p/net: put a lower bound on msize Greg Kroah-Hartman
2019-01-11 14:15 ` [PATCH 4.20 46/65] rxe: fix error completion wr_id and qp_num Greg Kroah-Hartman
2019-01-11 14:15 ` [PATCH 4.20 47/65] stm class: Fix a module refcount leak in policy creation error path Greg Kroah-Hartman
2019-01-11 14:15 ` [PATCH 4.20 48/65] RDMA/srpt: Fix a use-after-free in the channel release code Greg Kroah-Hartman
2019-01-11 14:15 ` [PATCH 4.20 49/65] RDMA/iwcm: Dont copy past the end of dev_name() string Greg Kroah-Hartman
2019-01-11 14:15 ` [PATCH 4.20 50/65] iommu/vt-d: Handle domain agaw being less than iommu agaw Greg Kroah-Hartman
2019-01-11 14:15 ` [PATCH 4.20 51/65] sched/fair: Fix infinite loop in update_blocked_averages() by reverting a9e7f6544b9c Greg Kroah-Hartman
2019-01-11 14:15 ` [PATCH 4.20 52/65] ceph: dont update importing caps mseq when handing cap export Greg Kroah-Hartman
2019-01-11 14:15 ` [PATCH 4.20 53/65] video: fbdev: pxafb: Fix "WARNING: invalid free of devm_ allocated data" Greg Kroah-Hartman
2019-01-11 14:15 ` [PATCH 4.20 54/65] drivers/perf: hisi: Fixup one DDRC PMU register offset Greg Kroah-Hartman
2019-01-11 14:15 ` [PATCH 4.20 55/65] powerpc/4xx/ocm: Fix compilation error due to PAGE_KERNEL usage Greg Kroah-Hartman
2019-01-11 14:15 ` [PATCH 4.20 56/65] selftests: Fix test errors related to lib.mk khdr target Greg Kroah-Hartman
2019-01-11 14:15 ` Greg Kroah-Hartman [this message]
2019-01-11 14:15 ` [PATCH 4.20 58/65] intel_th: msu: Fix an off-by-one in attribute store Greg Kroah-Hartman
2019-01-11 14:15 ` [PATCH 4.20 59/65] power: supply: olpc_battery: correct the temperature units Greg Kroah-Hartman
2019-01-11 14:15 ` [PATCH 4.20 60/65] of: of_node_get()/of_node_put() nodes held in phandle cache Greg Kroah-Hartman
2019-01-11 14:15 ` [PATCH 4.20 61/65] of: __of_detach_node() - remove node from " Greg Kroah-Hartman
2019-01-11 14:15 ` [PATCH 4.20 62/65] lib: fix build failure in CONFIG_DEBUG_VIRTUAL test Greg Kroah-Hartman
2019-01-11 14:15 ` [PATCH 4.20 63/65] drm/nouveau/drm/nouveau: Check rc from drm_dp_mst_topology_mgr_resume() Greg Kroah-Hartman
2019-01-11 14:15 ` [PATCH 4.20 64/65] drm/vc4: Set ->is_yuv to false when num_planes == 1 Greg Kroah-Hartman
2019-01-11 14:15 ` [PATCH 4.20 65/65] drm/rockchip: psr: do not dereference encoder before it is null checked Greg Kroah-Hartman
2019-01-11 21:35 ` [PATCH 4.20 00/65] 4.20.2-stable review shuah
2019-01-12 8:03 ` Greg Kroah-Hartman
2019-01-12 8:28 ` Naresh Kamboju
2019-01-12 17:35 ` Greg Kroah-Hartman
2019-01-12 17:45 ` Guenter Roeck
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