TLDRVuln - Cybersecurity Vulnerabilities Made Simple

In the Linux kernel, the following vulnerability has been resolved:

drm/amdkfd: Fix kernel warning during topology setup

This patch fixes the following kernel warning seen during

driver load by correctly initializing the p2plink attr before

creating the sysfs file:

[ +0.002865] ------------[ cut here ]------------

[ +0.002327] kobject: '(null)' (0000000056260cfb): is not initialized, yet kobject_put() is being called.

[ +0.004780] WARNING: CPU: 32 PID: 1006 at lib/kobject.c:718 kobject_put+0xaa/0x1c0

[ +0.001361] Call Trace:

[ +0.001234] <TASK>

[ +0.001067] kfd_remove_sysfs_node_entry+0x24a/0x2d0 [amdgpu]

[ +0.003147] kfd_topology_update_sysfs+0x3d/0x750 [amdgpu]

[ +0.002890] kfd_topology_add_device+0xbd7/0xc70 [amdgpu]

[ +0.002844] ? lock_release+0x13c/0x2e0

[ +0.001936] ? smu_cmn_send_smc_msg_with_param+0x1e8/0x2d0 [amdgpu]

[ +0.003313] ? amdgpu_dpm_get_mclk+0x54/0x60 [amdgpu]

[ +0.002703] kgd2kfd_device_init.cold+0x39f/0x4ed [amdgpu]

[ +0.002930] amdgpu_amdkfd_device_init+0x13d/0x1f0 [amdgpu]

[ +0.002944] amdgpu_device_init.cold+0x1464/0x17b4 [amdgpu]

[ +0.002970] ? pci_bus_read_config_word+0x43/0x80

[ +0.002380] amdgpu_driver_load_kms+0x15/0x100 [amdgpu]

[ +0.002744] amdgpu_pci_probe+0x147/0x370 [amdgpu]

[ +0.002522] local_pci_probe+0x40/0x80

[ +0.001896] work_for_cpu_fn+0x10/0x20

[ +0.001892] process_one_work+0x26e/0x5a0

[ +0.002029] worker_thread+0x1fd/0x3e0

[ +0.001890] ? process_one_work+0x5a0/0x5a0

[ +0.002115] kthread+0xea/0x110

[ +0.001618] ? kthread_complete_and_exit+0x20/0x20

[ +0.002422] ret_from_fork+0x1f/0x30

[ +0.001808] </TASK>

[ +0.001103] irq event stamp: 59837

[ +0.001718] hardirqs last enabled at (59849): [<ffffffffb30fab12>] __up_console_sem+0x52/0x60

[ +0.004414] hardirqs last disabled at (59860): [<ffffffffb30faaf7>] __up_console_sem+0x37/0x60

[ +0.004414] softirqs last enabled at (59654): [<ffffffffb307d9c7>] irq_exit_rcu+0xd7/0x130

[ +0.004205] softirqs last disabled at (59649): [<ffffffffb307d9c7>] irq_exit_rcu+0xd7/0x130

[ +0.004203] ---[ end trace 0000000000000000 ]---