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| author | Xiongfeng Wang <wangxiongfeng2@huawei.com> | 2022-11-18 09:31:35 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2022-12-31 15:31:57 +0300 |
| commit | bd66877c0b3b42eed0ecee0bd2a2a505c1e54177 (patch) | |
| tree | ea44358704ad3610bcee4875def5e351a67ad815 /arch/x86/events | |
| parent | a7be6b849b537d29763e8abe45ff27839760ae90 (diff) | |
| download | linux-bd66877c0b3b42eed0ecee0bd2a2a505c1e54177.tar.xz | |
perf/x86/intel/uncore: Fix reference count leak in hswep_has_limit_sbox()
[ Upstream commit 1ff9dd6e7071a561f803135c1d684b13c7a7d01d ]
pci_get_device() will increase the reference count for the returned
'dev'. We need to call pci_dev_put() to decrease the reference count.
Since 'dev' is only used in pci_read_config_dword(), let's add
pci_dev_put() right after it.
Fixes: 9d480158ee86 ("perf/x86/intel/uncore: Remove uncore extra PCI dev HSWEP_PCI_PCU_3")
Signed-off-by: Xiongfeng Wang <wangxiongfeng2@huawei.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Kan Liang <kan.liang@linux.intel.com>
Link: https://lore.kernel.org/r/20221118063137.121512-3-wangxiongfeng2@huawei.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'arch/x86/events')
| -rw-r--r-- | arch/x86/events/intel/uncore_snbep.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/x86/events/intel/uncore_snbep.c b/arch/x86/events/intel/uncore_snbep.c index 76fedc8e12dd..f5d89d06c66a 100644 --- a/arch/x86/events/intel/uncore_snbep.c +++ b/arch/x86/events/intel/uncore_snbep.c @@ -2891,6 +2891,7 @@ static bool hswep_has_limit_sbox(unsigned int device) return false; pci_read_config_dword(dev, HSWEP_PCU_CAPID4_OFFET, &capid4); + pci_dev_put(dev); if (!hswep_get_chop(capid4)) return true; |