| Message ID | 20220414045917.3223700-1-luoxiaobing0926@gmail.com (mailing list archive) |
|---|---|
| State | New, archived |
| Delegated to: | viresh kumar |
| Headers | show |
| Series | fix memory leak in sun50i_cpufreq_nvmem_probe | expand |
Hi! [resend] First, please update patch subject according to commit rules. Dne četrtek, 14. april 2022 ob 06:59:17 CEST je Xiaobing Luo napisal(a): > if sun50i_cpufreq_get_efuse failed, then opp_tables leak. > > unreferenced object 0xffff000010742a00 (size 128): > comm "swapper/0", pid 1, jiffies 4294902015 (age 1187.652s) > hex dump (first 32 bytes): > 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ > 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ > backtrace: > [<00000000b4dfebaa>] __kmalloc+0x338/0x474 > [<00000000d6e716db>] sun50i_cpufreq_nvmem_probe+0xc4/0x36c > [<000000007d6082a0>] platform_probe+0x98/0x11c > [<00000000c990f549>] really_probe+0x234/0x5a0 > [<000000002d9fecc6>] __driver_probe_device+0x194/0x224 > [<00000000cf0b94fa>] driver_probe_device+0x64/0x13c > [<00000000f238e4cf>] __device_attach_driver+0xf8/0x180 > [<000000006720e418>] bus_for_each_drv+0xf8/0x160 > [<00000000df4f14f6>] __device_attach+0x174/0x29c > [<00000000782002fb>] device_initial_probe+0x20/0x30 > [<00000000c2681b06>] bus_probe_device+0xfc/0x110 > [<00000000964cf3bd>] device_add+0x5f0/0xcd0 > [<000000004b9264e3>] platform_device_add+0x198/0x390 > [<00000000fa82a9d0>] platform_device_register_full+0x178/0x210 > [<000000009a5daf13>] sun50i_cpufreq_init+0xf8/0x168 > [<000000000377cc7c>] do_one_initcall+0xe4/0x570 > > Signed-off-by: Xiaobing Luo <luoxiaobing0926@gmail.com> Please add Fixes: tag. Best regards, Jernej > --- > drivers/cpufreq/sun50i-cpufreq-nvmem.c | 4 +++- > 1 file changed, 3 insertions(+), 1 deletion(-) > > diff --git a/drivers/cpufreq/sun50i-cpufreq-nvmem.c > b/drivers/cpufreq/sun50i-cpufreq-nvmem.c index 2deed8d8773f..75e1bf3a08f7 > 100644 > --- a/drivers/cpufreq/sun50i-cpufreq-nvmem.c > +++ b/drivers/cpufreq/sun50i-cpufreq-nvmem.c > @@ -98,8 +98,10 @@ static int sun50i_cpufreq_nvmem_probe(struct > platform_device *pdev) return -ENOMEM; > > ret = sun50i_cpufreq_get_efuse(&speed); > - if (ret) > + if (ret) { > + kfree(opp_tables); > return ret; > + } > > snprintf(name, MAX_NAME_LEN, "speed%d", speed);
diff --git a/drivers/cpufreq/sun50i-cpufreq-nvmem.c b/drivers/cpufreq/sun50i-cpufreq-nvmem.c index 2deed8d8773f..75e1bf3a08f7 100644 --- a/drivers/cpufreq/sun50i-cpufreq-nvmem.c +++ b/drivers/cpufreq/sun50i-cpufreq-nvmem.c @@ -98,8 +98,10 @@ static int sun50i_cpufreq_nvmem_probe(struct platform_device *pdev) return -ENOMEM; ret = sun50i_cpufreq_get_efuse(&speed); - if (ret) + if (ret) { + kfree(opp_tables); return ret; + } snprintf(name, MAX_NAME_LEN, "speed%d", speed);
if sun50i_cpufreq_get_efuse failed, then opp_tables leak. unreferenced object 0xffff000010742a00 (size 128): comm "swapper/0", pid 1, jiffies 4294902015 (age 1187.652s) hex dump (first 32 bytes): 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ backtrace: [<00000000b4dfebaa>] __kmalloc+0x338/0x474 [<00000000d6e716db>] sun50i_cpufreq_nvmem_probe+0xc4/0x36c [<000000007d6082a0>] platform_probe+0x98/0x11c [<00000000c990f549>] really_probe+0x234/0x5a0 [<000000002d9fecc6>] __driver_probe_device+0x194/0x224 [<00000000cf0b94fa>] driver_probe_device+0x64/0x13c [<00000000f238e4cf>] __device_attach_driver+0xf8/0x180 [<000000006720e418>] bus_for_each_drv+0xf8/0x160 [<00000000df4f14f6>] __device_attach+0x174/0x29c [<00000000782002fb>] device_initial_probe+0x20/0x30 [<00000000c2681b06>] bus_probe_device+0xfc/0x110 [<00000000964cf3bd>] device_add+0x5f0/0xcd0 [<000000004b9264e3>] platform_device_add+0x198/0x390 [<00000000fa82a9d0>] platform_device_register_full+0x178/0x210 [<000000009a5daf13>] sun50i_cpufreq_init+0xf8/0x168 [<000000000377cc7c>] do_one_initcall+0xe4/0x570 Signed-off-by: Xiaobing Luo <luoxiaobing0926@gmail.com> --- drivers/cpufreq/sun50i-cpufreq-nvmem.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-)