diff options
| author | Yongqiang Liu <[email protected]> | 2022-11-10 14:23:07 +0000 |
|---|---|---|
| committer | Rafael J. Wysocki <[email protected]> | 2022-11-30 19:37:24 +0100 |
| commit | 5c51054896bcce1d33d39fead2af73fec24f40b6 (patch) | |
| tree | 42c2258ca2e64936744fee46f46b24b86caaf23a /drivers/fpga/fpga-mgr.c | |
| parent | c7a5518ac39751ffab0ec563172ea8668ebc927c (diff) | |
cpufreq: Init completion before kobject_init_and_add()
In cpufreq_policy_alloc(), it will call uninitialed completion in
cpufreq_sysfs_release() when kobject_init_and_add() fails. And
that will cause a crash such as the following page fault in complete:
BUG: unable to handle page fault for address: fffffffffffffff8
[..]
RIP: 0010:complete+0x98/0x1f0
[..]
Call Trace:
kobject_put+0x1be/0x4c0
cpufreq_online.cold+0xee/0x1fd
cpufreq_add_dev+0x183/0x1e0
subsys_interface_register+0x3f5/0x4e0
cpufreq_register_driver+0x3b7/0x670
acpi_cpufreq_init+0x56c/0x1000 [acpi_cpufreq]
do_one_initcall+0x13d/0x780
do_init_module+0x1c3/0x630
load_module+0x6e67/0x73b0
__do_sys_finit_module+0x181/0x240
do_syscall_64+0x35/0x80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
Fixes: 4ebe36c94aed ("cpufreq: Fix kobject memleak")
Signed-off-by: Yongqiang Liu <[email protected]>
Acked-by: Viresh Kumar <[email protected]>
Cc: 5.2+ <[email protected]> # 5.2+
Signed-off-by: Rafael J. Wysocki <[email protected]>
Diffstat (limited to 'drivers/fpga/fpga-mgr.c')
0 files changed, 0 insertions, 0 deletions