Description
In the Linux kernel, the following vulnerability has been resolved: regulator: pca9450: Use devm_register_sys_off_handler With module test, there is error dump: ------------[ cut here ]------------ notifier callback pca9450_i2c_restart_handler already registered WARNING: kernel/notifier.c:23 at notifier_chain_register+0x5c/0x88, CPU#0: kworker/u16:3/50 Call trace: notifier_chain_register+0x5c/0x88 (P) atomic_notifier_chain_register+0x30/0x58 register_restart_handler+0x1c/0x28 pca9450_i2c_probe+0x418/0x538 i2c_device_probe+0x220/0x3d0 really_probe+0x114/0x410 __driver_probe_device+0xa0/0x150 driver_probe_device+0x40/0x114 __device_attach_driver+0xd4/0x12c So use devm_register_sys_off_handler to let kernel handle the resource free to avoid kernel dump.
Product status
6157e62b07d9331cc1d4d9d525dab33d45b0e83c (git) before 7a8c8aa0b0b2c62a0232bf868def85f3069ba7a7
6157e62b07d9331cc1d4d9d525dab33d45b0e83c (git) before 447be50598c05499f7ccc2b1f6ddb3da30f8099a
6.16
Any version before 6.16
6.16.4 (semver)
6.17 (original_commit_for_fix)
References
git.kernel.org/...c/7a8c8aa0b0b2c62a0232bf868def85f3069ba7a7
git.kernel.org/...c/447be50598c05499f7ccc2b1f6ddb3da30f8099a
