)]}'
{
  "commit": "1e07209dfbe187e5e4c9f59867a4f0ccfeece26b",
  "tree": "c6a016d6c64b8c25c548b8ed565a0df9b0256bf6",
  "parents": [
    "240bf0a24c060f3b61d035f9ae07f97634113b9e"
  ],
  "author": {
    "name": "Byungchul Park",
    "email": "byungchul@sk.com",
    "time": "Fri Feb 16 20:15:02 2024 +0900"
  },
  "committer": {
    "name": "He Gao",
    "email": "hegao@google.com",
    "time": "Mon Jun 02 09:41:39 2025 -0700"
  },
  "message": "mm/vmscan: fix a bug calling wakeup_kswapd() with a wrong zone index\n\ncommit 2774f256e7c0219e2b0a0894af1c76bdabc4f974 upstream.\n\nWith numa balancing on, when a numa system is running where a numa node\ndoesn\u0027t have its local memory so it has no managed zones, the following\noops has been observed.  It\u0027s because wakeup_kswapd() is called with a\nwrong zone index, -1.  Fixed it by checking the index before calling\nwakeup_kswapd().\n\n\u003e BUG: unable to handle page fault for address: 00000000000033f3\n\u003e #PF: supervisor read access in kernel mode\n\u003e #PF: error_code(0x0000) - not-present page\n\u003e PGD 0 P4D 0\n\u003e Oops: 0000 [#1] PREEMPT SMP NOPTI\n\u003e CPU: 2 PID: 895 Comm: masim Not tainted 6.6.0-dirty #255\n\u003e Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS\n\u003e    rel-1.16.0-0-gd239552ce722-prebuilt.qemu.org 04/01/2014\n\u003e RIP: 0010:wakeup_kswapd (./linux/mm/vmscan.c:7812)\n\u003e Code: (omitted)\n\u003e RSP: 0000:ffffc90004257d58 EFLAGS: 00010286\n\u003e RAX: ffffffffffffffff RBX: ffff88883fff0480 RCX: 0000000000000003\n\u003e RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff88883fff0480\n\u003e RBP: ffffffffffffffff R08: ff0003ffffffffff R09: ffffffffffffffff\n\u003e R10: ffff888106c95540 R11: 0000000055555554 R12: 0000000000000003\n\u003e R13: 0000000000000000 R14: 0000000000000000 R15: ffff88883fff0940\n\u003e FS:  00007fc4b8124740(0000) GS:ffff888827c00000(0000) knlGS:0000000000000000\n\u003e CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\n\u003e CR2: 00000000000033f3 CR3: 000000026cc08004 CR4: 0000000000770ee0\n\u003e DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000\n\u003e DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400\n\u003e PKRU: 55555554\n\u003e Call Trace:\n\u003e  \u003cTASK\u003e\n\u003e ? __die\n\u003e ? page_fault_oops\n\u003e ? __pte_offset_map_lock\n\u003e ? exc_page_fault\n\u003e ? asm_exc_page_fault\n\u003e ? wakeup_kswapd\n\u003e migrate_misplaced_page\n\u003e __handle_mm_fault\n\u003e handle_mm_fault\n\u003e do_user_addr_fault\n\u003e exc_page_fault\n\u003e asm_exc_page_fault\n\u003e RIP: 0033:0x55b897ba0808\n\u003e Code: (omitted)\n\u003e RSP: 002b:00007ffeefa821a0 EFLAGS: 00010287\n\u003e RAX: 000055b89983acd0 RBX: 00007ffeefa823f8 RCX: 000055b89983acd0\n\u003e RDX: 00007fc2f8122010 RSI: 0000000000020000 RDI: 000055b89983acd0\n\u003e RBP: 00007ffeefa821a0 R08: 0000000000000037 R09: 0000000000000075\n\u003e R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000000\n\u003e R13: 00007ffeefa82410 R14: 000055b897ba5dd8 R15: 00007fc4b8340000\n\u003e  \u003c/TASK\u003e\n\nBUG\u003db/404771735\nTEST\u003dpresubmit\nRELEASE_NOTE\u003dFixed CVE-2024-26783 in the Linux kernel.\n\ncos-patch: security-moderate\nLink: https://lkml.kernel.org/r/20240216111502.79759-1-byungchul@sk.com\nChange-Id: I3aeacb3c8eb24df503813094c5d310e3e8d08375\nSigned-off-by: Byungchul Park \u003cbyungchul@sk.com\u003e\nReported-by: Hyeongtak Ji \u003chyeongtak.ji@sk.com\u003e\nFixes: c574bbe917036 (\"NUMA balancing: optimize page placement for memory tiering system\")\nReviewed-by: Oscar Salvador \u003cosalvador@suse.de\u003e\nCc: Baolin Wang \u003cbaolin.wang@linux.alibaba.com\u003e\nCc: \"Huang, Ying\" \u003cying.huang@intel.com\u003e\nCc: Johannes Weiner \u003channes@cmpxchg.org\u003e\nCc: \u003cstable@vger.kernel.org\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Jianqi Ren \u003cjianqi.ren.cn@windriver.com\u003e\nSigned-off-by: He Zhe \u003czhe.he@windriver.com\u003e\nSigned-off-by: Greg Kroah-Hartman \u003cgregkh@linuxfoundation.org\u003e\nSigned-off-by: Kernel CVE Triage Automation \u003ccloud-image-kernel-cve-triage-automation@prod.google.com\u003e\nReviewed-on: https://cos-review.googlesource.com/c/third_party/kernel/+/103504\nReviewed-by: Miri Amarilio \u003cmirilio@google.com\u003e\nTested-by: Cusky Presubmit Bot \u003cpresubmit@cos-infra-prod.iam.gserviceaccount.com\u003e\nReviewed-by: He Gao \u003chegao@google.com\u003e\n",
  "tree_diff": [
    {
      "type": "modify",
      "old_id": "e37b18376714f03d16324e40d643aac1ecb1feb3",
      "old_mode": 33188,
      "old_path": "mm/migrate.c",
      "new_id": "7b986c9f4032331554305bca30924314722f7b5e",
      "new_mode": 33188,
      "new_path": "mm/migrate.c"
    }
  ]
}