rust_binder: Implement BINDER_DEBUG_DEAD_TRANSACTION

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This adds dynamic debug logs for:
- Releasing active transactions during thread stack unwinding.
- Discarded transaction error codes when a thread exits.
- Undelivered transaction acknowledgments (TRANSACTION_COMPLETE)
  upon thread exit.
- Undelivered process death and freeze notifications when processes
  exit or die.
- Undelivered transactions canceled due to target process death.

We now store the process PID in `ThreadError`, `DeliverCode`, and
`FreezeMessage` to ensure the correct PID is logged on cancellation.
This is necessary because `cancel()` runs from background `kworkers`,
which would otherwise print the wrong PID.

Reviewed-by: Alice Ryhl <aliceryhl@google.com>
Reviewed-by: Carlos Llamas <cmllamas@google.com>
Signed-off-by: Jahnavi MN <jahnavimn@google.com>
Link: https://patch.msgid.link/20260716-rust_binder_debug_mask-v4-7-3d7436c2d2f2@google.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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This commit is contained in:

Jahnavi MN 2026-07-16 08:37:49 +00:00 • committed by Greg Kroah-Hartman

parent 7ddb9f5d45

commit 5757ed4d95

5 changed files with 76 additions and 20 deletions

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24

drivers/android/binder/freeze.rs

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9

drivers/android/binder/node.rs

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14

drivers/android/binder/rust_binder_main.rs

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42

drivers/android/binder/thread.rs

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7

drivers/android/binder/transaction.rs

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