提交 bb58dd5d 编写于 作者: R Rafael J. Wysocki

PM / Hibernate: Do not leak memory in error/test code paths

The hibernation core code forgets to release memory preallocated
for hibernation if there's an error in its early stages or if test
modes causing hibernation_snapshot() to return early are used.  This
causes the system to be hardly usable, because the amount of
preallocated memory is usually huge.  Fix this problem.
Reported-by: NSrivatsa S. Bhat <srivatsa.bhat@linux.vnet.ibm.com>
Signed-off-by: NRafael J. Wysocki <rjw@sisk.pl>
Acked-by: NSrivatsa S. Bhat <srivatsa.bhat@linux.vnet.ibm.com>
上级 f10cdea6
......@@ -347,7 +347,7 @@ int hibernation_snapshot(int platform_mode)
error = freeze_kernel_threads();
if (error)
goto Close;
goto Cleanup;
if (hibernation_test(TEST_FREEZER) ||
hibernation_testmode(HIBERNATION_TESTPROC)) {
......@@ -357,12 +357,14 @@ int hibernation_snapshot(int platform_mode)
* successful freezer test.
*/
freezer_test_done = true;
goto Close;
goto Cleanup;
}
error = dpm_prepare(PMSG_FREEZE);
if (error)
goto Complete_devices;
if (error) {
dpm_complete(msg);
goto Cleanup;
}
suspend_console();
pm_restrict_gfp_mask();
......@@ -391,8 +393,6 @@ int hibernation_snapshot(int platform_mode)
pm_restore_gfp_mask();
resume_console();
Complete_devices:
dpm_complete(msg);
Close:
......@@ -402,6 +402,10 @@ int hibernation_snapshot(int platform_mode)
Recover_platform:
platform_recover(platform_mode);
goto Resume_devices;
Cleanup:
swsusp_free();
goto Close;
}
/**
......
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