Re: [PATCH] regulator: fix memory leak on error path of regulator_register()

[Mark Brown]

On Fri, 24 Jul 2020 03:50:13 +0300, Vladimir Zapolskiy wrote:
> The change corrects registration and deregistration on error path
> of a regulator, the problem was manifested by a reported memory
> leak on deferred probe:
> 
>     as3722-regulator as3722-regulator: regulator 13 register failed -517
> 
>     # cat /sys/kernel/debug/kmemleak
>     unreferenced object 0xecc43740 (size 64):
>       comm "swapper/0", pid 1, jiffies 4294937640 (age 712.880s)
>       hex dump (first 32 bytes):
>         72 65 67 75 6c 61 74 6f 72 2e 32 34 00 5a 5a 5a  regulator.24.ZZZ
>         5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a  ZZZZZZZZZZZZZZZZ
>       backtrace:
>         [<0c4c3d1c>] __kmalloc_track_caller+0x15c/0x2c0
>         [<40c0ad48>] kvasprintf+0x64/0xd4
>         [<109abd29>] kvasprintf_const+0x70/0x84
>         [<c4215946>] kobject_set_name_vargs+0x34/0xa8
>         [<62282ea2>] dev_set_name+0x40/0x64
>         [<a39b6757>] regulator_register+0x3a4/0x1344
>         [<16a9543f>] devm_regulator_register+0x4c/0x84
>         [<51a4c6a1>] as3722_regulator_probe+0x294/0x754
>         ...
> 
> [...]

Applied to

   https://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator.git for-next

Thanks!

[1/1] regulator: fix memory leak on error path of regulator_register()
      commit: 9177514ce34902b3adb2abd490b6ad05d1cfcb43

All being well this means that it will be integrated into the linux-next
tree (usually sometime in the next 24 hours) and sent to Linus during
the next merge window (or sooner if it is a bug fix), however if
problems are discovered then the patch may be dropped or reverted.

You may get further e-mails resulting from automated or manual testing
and review of the tree, please engage with people reporting problems and
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Thanks,
Mark