)]}'
{
  "commit": "54baac638c0f8e99c2d780e6d49f57ebd9f1d56e",
  "tree": "783fc58d21f041ea07ef3db57919396eb690f21e",
  "parents": [
    "b337fbecfa73585ce2ad46480553c71eb85be4da"
  ],
  "author": {
    "name": "Arnd Bergmann",
    "email": "arnd@arndb.de",
    "time": "Tue May 19 21:01:28 2026 +0200"
  },
  "committer": {
    "name": "Paul E. McKenney",
    "email": "paulmck@kernel.org",
    "time": "Tue May 19 14:53:20 2026 -0700"
  },
  "message": "rcu/nocb: reduce stack usage in nocb_gp_wait()\n\nWhen CONFIG_UBSAN_ALIGNMENT is enabled, the stack usage of nocb_gp_wait()\ngrows above typical warning limits:\n\nIn file included from kernel/rcu/tree.c:4930:\nkernel/rcu/tree_nocb.h: In function \u0027rcu_nocb_gp_kthread\u0027:\nkernel/rcu/tree_nocb.h:866:1: error: the frame size of 1968 bytes is larger than 1280 bytes [-Werror\u003dframe-larger-than\u003d]\n\nApparently, the problem is passing rcu_data from a \u0027void *\u0027 pointer,\nwhich gcc assumes may be misaligned. When the function is not inlined\ninto rcu_nocb_gp_kthread(), that is no longer visible to gcc.\n\nAdd a \u0027noinline_for_stack\u0027 annotation that leads to skipping a lot of\nthe alignment sanitizer checks and keeps the stack usage 60% lower here.\n\nSigned-off-by: Arnd Bergmann \u003carnd@arndb.de\u003e\nSigned-off-by: Paul E. McKenney \u003cpaulmck@kernel.org\u003e\n",
  "tree_diff": [
    {
      "type": "modify",
      "old_id": "1047b30cd46b7d53ef820019c1c07e71c6fe18b8",
      "old_mode": 33188,
      "old_path": "kernel/rcu/tree_nocb.h",
      "new_id": "373b877cf171d35a707ee834940164696518a40b",
      "new_mode": 33188,
      "new_path": "kernel/rcu/tree_nocb.h"
    }
  ]
}