From: Sasha Levin <sashal@kernel.org>
To: linux-kernel@vger.kernel.org, stable@vger.kernel.org
Cc: Alexey Kardashevskiy <aik@ozlabs.ru>,
Michael Ellerman <mpe@ellerman.id.au>,
Sasha Levin <sashal@kernel.org>,
linuxppc-dev@lists.ozlabs.org
Subject: [PATCH AUTOSEL 5.8 12/62] powerpc/xive: Ignore kmemleak false positives
Date: Fri, 21 Aug 2020 12:13:33 -0400 [thread overview]
Message-ID: <20200821161423.347071-12-sashal@kernel.org> (raw)
In-Reply-To: <20200821161423.347071-1-sashal@kernel.org>
From: Alexey Kardashevskiy <aik@ozlabs.ru>
[ Upstream commit f0993c839e95dd6c7f054a1015e693c87e33e4fb ]
xive_native_provision_pages() allocates memory and passes the pointer to
OPAL so kmemleak cannot find the pointer usage in the kernel memory and
produces a false positive report (below) (even if the kernel did scan
OPAL memory, it is unable to deal with __pa() addresses anyway).
This silences the warning.
unreferenced object 0xc000200350c40000 (size 65536):
comm "qemu-system-ppc", pid 2725, jiffies 4294946414 (age 70776.530s)
hex dump (first 32 bytes):
02 00 00 00 50 00 00 00 00 00 00 00 00 00 00 00 ....P...........
01 00 08 07 00 00 00 00 00 00 00 00 00 00 00 00 ................
backtrace:
[<0000000081ff046c>] xive_native_alloc_vp_block+0x120/0x250
[<00000000d555d524>] kvmppc_xive_compute_vp_id+0x248/0x350 [kvm]
[<00000000d69b9c9f>] kvmppc_xive_connect_vcpu+0xc0/0x520 [kvm]
[<000000006acbc81c>] kvm_arch_vcpu_ioctl+0x308/0x580 [kvm]
[<0000000089c69580>] kvm_vcpu_ioctl+0x19c/0xae0 [kvm]
[<00000000902ae91e>] ksys_ioctl+0x184/0x1b0
[<00000000f3e68bd7>] sys_ioctl+0x48/0xb0
[<0000000001b2c127>] system_call_exception+0x124/0x1f0
[<00000000d2b2ee40>] system_call_common+0xe8/0x214
Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20200612043303.84894-1-aik@ozlabs.ru
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
arch/powerpc/sysdev/xive/native.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/arch/powerpc/sysdev/xive/native.c b/arch/powerpc/sysdev/xive/native.c
index 71b881e554fcb..cb58ec7ce77ac 100644
--- a/arch/powerpc/sysdev/xive/native.c
+++ b/arch/powerpc/sysdev/xive/native.c
@@ -18,6 +18,7 @@
#include <linux/delay.h>
#include <linux/cpumask.h>
#include <linux/mm.h>
+#include <linux/kmemleak.h>
#include <asm/machdep.h>
#include <asm/prom.h>
@@ -647,6 +648,7 @@ static bool xive_native_provision_pages(void)
pr_err("Failed to allocate provisioning page\n");
return false;
}
+ kmemleak_ignore(p);
opal_xive_donate_page(chip, __pa(p));
}
return true;
--
2.25.1
next prev parent reply other threads:[~2020-08-21 17:28 UTC|newest]
Thread overview: 67+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-08-21 16:13 [PATCH AUTOSEL 5.8 01/62] ALSA: hda/hdmi: Add quirk to force connectivity Sasha Levin
2020-08-21 16:13 ` [PATCH AUTOSEL 5.8 02/62] ALSA: pci: delete repeated words in comments Sasha Levin
2020-08-21 16:13 ` [PATCH AUTOSEL 5.8 03/62] ALSA: hda/realtek: Fix pin default on Intel NUC 8 Rugged Sasha Levin
2020-08-21 16:13 ` [PATCH AUTOSEL 5.8 04/62] ALSA: hda/hdmi: Use force connectivity quirk on another HP desktop Sasha Levin
2020-08-21 16:13 ` [PATCH AUTOSEL 5.8 05/62] drm/amdgpu: fix RAS memory leak in error case Sasha Levin
2020-08-21 16:13 ` [PATCH AUTOSEL 5.8 06/62] EDAC/mc: Call edac_inc_ue_error() before panic Sasha Levin
2020-08-21 16:13 ` [PATCH AUTOSEL 5.8 07/62] ASoC: img: Fix a reference count leak in img_i2s_in_set_fmt Sasha Levin
2020-08-21 16:13 ` [PATCH AUTOSEL 5.8 08/62] ASoC: img-parallel-out: Fix a reference count leak Sasha Levin
2020-08-21 16:13 ` [PATCH AUTOSEL 5.8 09/62] ASoC: tegra: Fix reference count leaks Sasha Levin
2020-08-21 16:13 ` [PATCH AUTOSEL 5.8 10/62] mfd: intel-lpss: Add Intel Emmitsburg PCH PCI IDs Sasha Levin
2020-08-21 16:13 ` [PATCH AUTOSEL 5.8 11/62] arm64: dts: qcom: msm8916: Pull down PDM GPIOs during sleep Sasha Levin
2020-08-21 16:13 ` Sasha Levin [this message]
2020-08-21 16:13 ` [PATCH AUTOSEL 5.8 13/62] media: pci: ttpci: av7110: fix possible buffer overflow caused by bad DMA value in debiirq() Sasha Levin
2020-08-21 16:13 ` [PATCH AUTOSEL 5.8 14/62] gcc-plugins/stackleak: Don't instrument itself Sasha Levin
2020-08-21 16:13 ` [PATCH AUTOSEL 5.8 15/62] blktrace: ensure our debugfs dir exists Sasha Levin
2020-08-21 16:13 ` [PATCH AUTOSEL 5.8 16/62] staging: rts5208: fix memleaks on error handling paths in probe Sasha Levin
2020-08-21 16:13 ` [PATCH AUTOSEL 5.8 17/62] scsi: target: tcmu: Fix crash on ARM during cmd completion Sasha Levin
2020-08-21 16:13 ` [PATCH AUTOSEL 5.8 18/62] mfd: intel-lpss: Add Intel Tiger Lake PCH-H PCI IDs Sasha Levin
2020-08-21 16:13 ` [PATCH AUTOSEL 5.8 19/62] iommu/iova: Don't BUG on invalid PFNs Sasha Levin
2020-08-21 16:13 ` [PATCH AUTOSEL 5.8 20/62] platform/chrome: cros_ec_sensorhub: Fix EC timestamp overflow Sasha Levin
2020-08-21 16:13 ` [PATCH AUTOSEL 5.8 21/62] drm/amdkfd: Fix reference count leaks Sasha Levin
2020-08-21 16:13 ` [PATCH AUTOSEL 5.8 22/62] drm/radeon: fix multiple reference count leak Sasha Levin
2020-08-21 16:13 ` [PATCH AUTOSEL 5.8 23/62] drm/amdgpu: fix ref count leak in amdgpu_driver_open_kms Sasha Levin
2020-08-21 16:13 ` [PATCH AUTOSEL 5.8 24/62] drm/amd/display: fix ref count leak in amdgpu_drm_ioctl Sasha Levin
2020-08-21 16:13 ` [PATCH AUTOSEL 5.8 25/62] drm/amdgpu: fix ref count leak in amdgpu_display_crtc_set_config Sasha Levin
2020-08-21 16:13 ` [PATCH AUTOSEL 5.8 26/62] drm/amdgpu/display: fix ref count leak when pm_runtime_get_sync fails Sasha Levin
2020-08-21 16:13 ` [PATCH AUTOSEL 5.8 27/62] drm/amdgpu/fence: " Sasha Levin
2020-08-21 16:13 ` [PATCH AUTOSEL 5.8 28/62] drm/amdkfd: " Sasha Levin
2020-08-21 16:13 ` [PATCH AUTOSEL 5.8 29/62] drm/amdgpu/pm: " Sasha Levin
2020-08-21 16:13 ` [PATCH AUTOSEL 5.8 30/62] scsi: lpfc: Fix shost refcount mismatch when deleting vport Sasha Levin
2020-08-21 16:13 ` [PATCH AUTOSEL 5.8 31/62] xfs: Don't allow logging of XFS_ISTALE inodes Sasha Levin
2020-08-21 16:13 ` [PATCH AUTOSEL 5.8 32/62] scsi: target: Fix xcopy sess release leak Sasha Levin
2020-08-21 16:13 ` [PATCH AUTOSEL 5.8 33/62] selftests/powerpc: Purge extra count_pmc() calls of ebb selftests Sasha Levin
2020-08-21 16:13 ` [PATCH AUTOSEL 5.8 34/62] f2fs: remove write attribute of main_blkaddr sysfs node Sasha Levin
2020-08-21 16:13 ` [PATCH AUTOSEL 5.8 35/62] f2fs: fix error path in do_recover_data() Sasha Levin
2020-08-21 16:13 ` [PATCH AUTOSEL 5.8 36/62] MIPS: KVM: Limit Trap-and-Emulate to MIPS32R2 only Sasha Levin
2020-08-21 16:13 ` [PATCH AUTOSEL 5.8 37/62] omapfb: fix multiple reference count leaks due to pm_runtime_get_sync Sasha Levin
2020-08-21 16:13 ` [PATCH AUTOSEL 5.8 38/62] PCI: Fix pci_create_slot() reference count leak Sasha Levin
2020-08-21 16:14 ` [PATCH AUTOSEL 5.8 39/62] ARM: dts: ls1021a: output PPS signal on FIPER2 Sasha Levin
2020-08-21 16:14 ` [PATCH AUTOSEL 5.8 40/62] rtlwifi: rtl8192cu: Prevent leaking urb Sasha Levin
2020-08-21 16:14 ` [PATCH AUTOSEL 5.8 41/62] mips/vdso: Fix resource leaks in genvdso.c Sasha Levin
2020-08-21 16:14 ` [PATCH AUTOSEL 5.8 42/62] ALSA: hda: Add support for Loongson 7A1000 controller Sasha Levin
2020-08-21 16:14 ` [PATCH AUTOSEL 5.8 43/62] gpu: host1x: Put gather's BO on pinning error Sasha Levin
2020-08-21 16:14 ` [PATCH AUTOSEL 5.8 44/62] cec-api: prevent leaking memory through hole in structure Sasha Levin
2020-08-21 16:14 ` [PATCH AUTOSEL 5.8 45/62] ASoC: Intel: sof_sdw_rt711: remove properties in card remove Sasha Levin
2020-08-21 16:14 ` [PATCH AUTOSEL 5.8 46/62] HID: quirks: add NOGET quirk for Logitech GROUP Sasha Levin
2020-08-21 16:14 ` [PATCH AUTOSEL 5.8 47/62] f2fs: fix use-after-free issue Sasha Levin
2020-08-21 16:14 ` [PATCH AUTOSEL 5.8 48/62] drm/nouveau/drm/noveau: fix reference count leak in nouveau_fbcon_open Sasha Levin
2020-08-21 16:14 ` [PATCH AUTOSEL 5.8 49/62] drm/nouveau: fix reference count leak in nv50_disp_atomic_commit Sasha Levin
2020-08-21 16:14 ` [PATCH AUTOSEL 5.8 50/62] drm/nouveau: Fix reference count leak in nouveau_connector_detect Sasha Levin
2020-08-21 16:14 ` [PATCH AUTOSEL 5.8 51/62] locking/lockdep: Fix overflow in presentation of average lock-time Sasha Levin
2020-08-21 16:14 ` [PATCH AUTOSEL 5.8 52/62] btrfs: file: reserve qgroup space after the hole punch range is locked Sasha Levin
2020-08-21 16:14 ` [PATCH AUTOSEL 5.8 53/62] btrfs: make btrfs_qgroup_check_reserved_leak take btrfs_inode Sasha Levin
2020-08-21 16:14 ` [PATCH AUTOSEL 5.8 54/62] scsi: iscsi: Do not put host in iscsi_set_flashnode_param() Sasha Levin
2020-08-21 16:14 ` [PATCH AUTOSEL 5.8 55/62] RDMA/efa: Add EFA 0xefa1 PCI ID Sasha Levin
2020-08-21 19:40 ` Jason Gunthorpe
2020-08-21 19:53 ` Sasha Levin
2020-08-21 20:19 ` Jason Gunthorpe
2020-08-21 20:34 ` Sasha Levin
2020-08-23 6:43 ` Gal Pressman
2020-08-21 16:14 ` [PATCH AUTOSEL 5.8 56/62] netfilter: nf_tables: report EEXIST on overlaps Sasha Levin
2020-08-21 16:14 ` [PATCH AUTOSEL 5.8 57/62] ceph: fix potential mdsc use-after-free crash Sasha Levin
2020-08-21 16:14 ` [PATCH AUTOSEL 5.8 58/62] ceph: do not access the kiocb after aio requests Sasha Levin
2020-08-21 16:14 ` [PATCH AUTOSEL 5.8 59/62] scsi: fcoe: Memory leak fix in fcoe_sysfs_fcf_del() Sasha Levin
2020-08-21 16:14 ` [PATCH AUTOSEL 5.8 60/62] i2c: i801: Add support for Intel Tiger Lake PCH-H Sasha Levin
2020-08-21 16:14 ` [PATCH AUTOSEL 5.8 61/62] EDAC/ie31200: Fallback if host bridge device is already initialized Sasha Levin
2020-08-21 16:14 ` [PATCH AUTOSEL 5.8 62/62] hugetlbfs: prevent filesystem stacking of hugetlbfs Sasha Levin
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