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X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: =?us-ascii?Q?fs8JIT7miI459ZV7JzyJXCXV3LXsZWWckcosexzjXMFPtAgn57vtUpCOfNwQ?= =?us-ascii?Q?WSE1RV0LtqDVWmY4aTinhn4QVts7FLchamDqBR6YsNlJ89d5Nq3c2bsJ9Ozj?= =?us-ascii?Q?ElmFIqudXtGESzKtg8TA3Ues+GE2id23nmOfVpz/BaqdLwit3NtlhmDQ8bAU?= =?us-ascii?Q?DeZCw7i0N8eb1OcZ4VI+hSwJ3BgcP2cXPgS6ZvbeLCpHs6vArrpydsAML33A?= =?us-ascii?Q?GqpPcTu32PIeFXK6diFJrDpFxTZmBrO+V6Ad9z0HAuZmrydcrt3C9265ugvi?= =?us-ascii?Q?hmHtAya29AgG8f/VyxL+/LnB4TJXkThaD+Au2jqmLKXec5SNh3Bv3q0+7bF9?= =?us-ascii?Q?hUemz6RdORsPcK+y3UagywFUTGHOhivVNqdGlfuvEh9/3Tk+CLw3AdcUfq0M?= =?us-ascii?Q?3twUTq/6SM2JVolT6rC/reZvC0H8q0U8d1Ix7pgwTTDyTs8p8grGOXA0MZwy?= =?us-ascii?Q?PSWH0JFTO/mWSLAUgXrNZXJ2ck35jYvYSEhaGnOqexIwTmFB2vPGLkbbTL3+?= =?us-ascii?Q?sAmve1LXSkqfEWBbTP4TcMD04a5xIRL9iTDG5Dd76I0kIhurH/M3aH1quM8D?= =?us-ascii?Q?D2B/dTbAmowOJIvueHfyPCx0XhQEw0ZepnEMSWLVM54f33r3YQORkzeDurmQ?= =?us-ascii?Q?fnPZHSAqUWgBRTX1tMhq3bT0vPMcDn8SIZ0mCWSkCopdxpZyG+bc/A2JQ5fs?= =?us-ascii?Q?YbFQz076n/R3M9X80xZr00GixQiDceRdfoFkN0Mfj96lFZ5b8L1rgXZaPrTW?= =?us-ascii?Q?12nbKwWWLdPCstrSo4Je78CQuD3RQpPth9y/mJjeUJqIk1HOES8yAufOAhtH?= =?us-ascii?Q?MdAPL7mmFPPM5kdCeONHcIZIMvqYcaSS4pDFX1PAc9wogWEgSh6BzBMINgDX?= =?us-ascii?Q?Z+2UKCVLwHaG39eJupfusJvAn4DkL0+I7za3O8xRBcKh4KnSoIIrI9J1+RXS?= =?us-ascii?Q?oCqRdVLWJ/xMffyOhbSn2RJEf9NtjHiZBGRQCvAhRipIUeRFn1Pgab3qkCtD?= =?us-ascii?Q?fNdcW0jIHU521GleXbOfpiUsc7ozC+Vg6BVNnI9chqYSkrYoryr4cQYKKZbb?= =?us-ascii?Q?Nb5Y5MbivhLLEI7srtpk7HuM7VftQsqUkIj5tSlJFbEJm1q6ilXY+J9GyigF?= =?us-ascii?Q?6ES0FhMOwI1LPl6ck5cMYRL/4Kfpigve+YJGBRdKNNw/xWs32k1LmTOw/Orx?= =?us-ascii?Q?R5IOJZUIChaR8TY26YfD4OAa2N5vRKzR5Ptouyn5XlWSSIlbvkB8tS1/ihz9?= =?us-ascii?Q?pcdAjL6paWbJHbD8nJmmpNhjAbNjspeJQs7jF87khB6iN5sKnf/ukQEvtvty?= =?us-ascii?Q?4QlgiE7U8sZy05Wt+YGTrbtkPfGrEf6g3z08f9Us2QA3OFJk/oljri+pbaQ8?= =?us-ascii?Q?wPjwGEuKnzyGWi0xgndZoRm3bF4mhyR8OrHFC6uxF7+jHoLidXsIQuYfjCrL?= =?us-ascii?Q?XNSDuQyKHH/v3eu7Oz61QYxGF+utN0GPPO0qP8RbCuaKpk1XNIPViiJcCknS?= =?us-ascii?Q?/ugAtf4GkM2KbHGyLxyevcINETvJhBFJrjhgE/efUrMRxsfTQMPgswyIpR5G?= =?us-ascii?Q?5k01DFJoDo903HZinMsl8PM7jG4GWhIhNysYIQYsR2DoXxlJeDEw2x5gI2Ff?= =?us-ascii?Q?Ng=3D=3D?= X-MS-Exchange-CrossTenant-Network-Message-Id: 5346d774-6982-4714-fe67-08dd2fb2a175 X-MS-Exchange-CrossTenant-AuthSource: LV3PR11MB8603.namprd11.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 08 Jan 2025 07:04:01.7744 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 46c98d88-e344-4ed4-8496-4ed7712e255d X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: lDiGfYN3vS81hNBPRH1I7D7I2A7QOqB+UQAOGaASUfnlaNLnczTlZ69sURkLxPLnhtgQFarhW6C5LaTQt6FdHg== X-MS-Exchange-Transport-CrossTenantHeadersStamped: PH0PR11MB5879 X-OriginatorOrg: intel.com Hello, we found the new added test kmalloc_track_caller_oob_right randomly failed (10 out of 30 runs) which seems due to below (1) 1857099c18e16a72 3738290bfc99606787f515a4590 ---------------- --------------------------- fail:runs %reproduction fail:runs | | | :30 33% 10:30 kunit.kasan.fail :30 33% 10:30 dmesg.BUG:KFENCE:memory_corruption_in_kmalloc_track_caller_oob_right <-- (1) below are details. kernel test robot noticed "kunit.kasan.fail" on: commit: 3738290bfc99606787f515a4590ad38dc4f79ca4 ("kasan: add kunit tests for kmalloc_track_caller, kmalloc_node_track_caller") https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git master [test failed on linus/master 0bc21e701a6ffacfdde7f04f87d664d82e8a13bf] [test failed on linux-next/master 8155b4ef3466f0e289e8fcc9e6e62f3f4dceeac2] in testcase: kunit version: with following parameters: group: group-03 config: x86_64-rhel-9.4-kunit compiler: gcc-12 test machine: 8 threads 1 sockets Intel(R) Core(TM) i7-7700 CPU @ 3.60GHz (Kaby Lake) with 32G memory (please refer to attached dmesg/kmsg for entire log/backtrace) If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot | Closes: https://lore.kernel.org/oe-lkp/202501081209.b7d8b735-lkp@intel.com [ 117.724741] ok 3 kmalloc_node_oob_right [ 117.724849] ================================================================== [ 117.737591] BUG: KASAN: slab-out-of-bounds in kmalloc_track_caller_oob_right+0x4ca/0x530 [kasan_test] [ 117.747467] Write of size 1 at addr ffff888165906078 by task kunit_try_catch/3613 [ 117.757782] CPU: 7 UID: 0 PID: 3613 Comm: kunit_try_catch Tainted: G B W N 6.12.0-rc6-00221-g3738290bfc99 #1 [ 117.769291] Tainted: [B]=BAD_PAGE, [W]=WARN, [N]=TEST [ 117.775007] Hardware name: Dell Inc. OptiPlex 7050/062KRH, BIOS 1.2.0 12/22/2016 [ 117.783056] Call Trace: [ 117.786185] [ 117.788966] dump_stack_lvl+0x4f/0x70 [ 117.793307] print_address_description.constprop.0+0x2c/0x3a0 [ 117.799721] ? kmalloc_track_caller_oob_right+0x4ca/0x530 [kasan_test] [ 117.806918] print_report+0xb9/0x280 [ 117.811183] ? kasan_addr_to_slab+0x9/0x90 [ 117.815961] ? kmalloc_track_caller_oob_right+0x4ca/0x530 [kasan_test] [ 117.823154] kasan_report+0xcb/0x100 [ 117.827408] ? kmalloc_track_caller_oob_right+0x4ca/0x530 [kasan_test] [ 117.834602] kmalloc_track_caller_oob_right+0x4ca/0x530 [kasan_test] [ 117.841626] ? __pfx_kmalloc_track_caller_oob_right+0x10/0x10 [kasan_test] [ 117.849166] ? __schedule+0x716/0x15e0 [ 117.853589] ? ktime_get_ts64+0x7f/0x240 [ 117.858186] kunit_try_run_case+0x173/0x440 [ 117.863043] ? try_to_wake_up+0x913/0x1580 [ 117.867813] ? __pfx_kunit_try_run_case+0x10/0x10 [ 117.873187] ? __pfx__raw_spin_lock_irqsave+0x10/0x10 [ 117.878915] ? set_cpus_allowed_ptr+0x81/0xb0 [ 117.883956] ? __pfx_set_cpus_allowed_ptr+0x10/0x10 [ 117.889502] ? __pfx_kunit_try_run_case+0x10/0x10 [ 117.894876] ? __pfx_kunit_generic_run_threadfn_adapter+0x10/0x10 [ 117.901633] kunit_generic_run_threadfn_adapter+0x79/0xe0 [ 117.907698] kthread+0x2d4/0x3c0 [ 117.911604] ? __pfx_kthread+0x10/0x10 [ 117.916032] ret_from_fork+0x2d/0x70 [ 117.920291] ? __pfx_kthread+0x10/0x10 [ 117.924718] ret_from_fork_asm+0x1a/0x30 [ 117.929324] [ 117.934373] Allocated by task 3613: [ 117.938544] kasan_save_stack+0x1c/0x40 [ 117.943062] kasan_save_track+0x10/0x30 [ 117.947574] __kasan_kmalloc+0xa6/0xb0 [ 117.951998] __kmalloc_node_track_caller_noprof+0x1bd/0x470 [ 117.958239] kmalloc_track_caller_oob_right+0x8c/0x530 [kasan_test] [ 117.965176] kunit_try_run_case+0x173/0x440 [ 117.970031] kunit_generic_run_threadfn_adapter+0x79/0xe0 [ 117.976097] kthread+0x2d4/0x3c0 [ 117.980000] ret_from_fork+0x2d/0x70 [ 117.984251] ret_from_fork_asm+0x1a/0x30 [ 117.991022] The buggy address belongs to the object at ffff888165906000 which belongs to the cache kmalloc-128 of size 128 [ 118.004873] The buggy address is located 0 bytes to the right of allocated 120-byte region [ffff888165906000, ffff888165906078) [ 118.021331] The buggy address belongs to the physical page: [ 118.027566] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x165906 [ 118.036221] head: order:1 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0 [ 118.044530] ksm flags: 0x17ffffc0000040(head|node=0|zone=2|lastcpupid=0x1fffff) [ 118.052494] page_type: f5(slab) [ 118.056314] raw: 0017ffffc0000040 ffff888100042a00 ffffea00202bd080 0000000000000003 [ 118.064708] raw: 0000000000000000 0000000080200020 00000001f5000000 0000000000000000 [ 118.073102] head: 0017ffffc0000040 ffff888100042a00 ffffea00202bd080 0000000000000003 [ 118.081581] head: 0000000000000000 0000000080200020 00000001f5000000 0000000000000000 [ 118.090061] head: 0017ffffc0000001 ffffea0005964181 ffffffffffffffff 0000000000000000 [ 118.098541] head: 0000000000000002 0000000000000000 00000000ffffffff 0000000000000000 [ 118.107021] page dumped because: kasan: bad access detected [ 118.115431] Memory state around the buggy address: [ 118.120904] ffff888165905f00: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 118.128782] ffff888165905f80: fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc fc [ 118.136658] >ffff888165906000: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 fc [ 118.144535] ^ [ 118.152323] ffff888165906080: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 118.160211] ffff888165906100: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 fc fc [ 118.168100] ================================================================== [ 118.176059] # kmalloc_track_caller_oob_right: EXPECTATION FAILED at mm/kasan/kasan_test_c.c:243 KASAN failure expected in "ptr[size] = 'y'", but none occurred [ 118.176103] ================================================================== [ 118.201544] BUG: KFENCE: memory corruption in kmalloc_track_caller_oob_right+0x27b/0x530 [kasan_test] [ 118.213582] Corrupted memory at 0x00000000e59a4b3f [ ! . . . . . . . . . . . . . . . ] (in kfence-#20): [ 118.223645] kmalloc_track_caller_oob_right+0x27b/0x530 [kasan_test] [ 118.230667] kunit_try_run_case+0x173/0x440 [ 118.235525] kunit_generic_run_threadfn_adapter+0x79/0xe0 [ 118.241590] kthread+0x2d4/0x3c0 [ 118.245497] ret_from_fork+0x2d/0x70 [ 118.249748] ret_from_fork_asm+0x1a/0x30 [ 118.256520] kfence-#20: 0x0000000036299d7e-0x000000000c1813d3, size=120, cache=kmalloc-128 [ 118.267597] allocated by task 3613 on cpu 7 at 118.176015s (0.091581s ago): [ 118.275220] kmalloc_track_caller_oob_right+0x190/0x530 [kasan_test] [ 118.282241] kunit_try_run_case+0x173/0x440 [ 118.287100] kunit_generic_run_threadfn_adapter+0x79/0xe0 [ 118.293166] kthread+0x2d4/0x3c0 [ 118.297071] ret_from_fork+0x2d/0x70 [ 118.301322] ret_from_fork_asm+0x1a/0x30 [ 118.308107] freed by task 3613 on cpu 7 at 118.176094s (0.132012s ago): [ 118.315381] kmalloc_track_caller_oob_right+0x27b/0x530 [kasan_test] [ 118.322403] kunit_try_run_case+0x173/0x440 [ 118.327260] kunit_generic_run_threadfn_adapter+0x79/0xe0 [ 118.333327] kthread+0x2d4/0x3c0 [ 118.337233] ret_from_fork+0x2d/0x70 [ 118.341482] ret_from_fork_asm+0x1a/0x30 [ 118.348258] CPU: 7 UID: 0 PID: 3613 Comm: kunit_try_catch Tainted: G B W N 6.12.0-rc6-00221-g3738290bfc99 #1 [ 118.359770] Tainted: [B]=BAD_PAGE, [W]=WARN, [N]=TEST [ 118.365490] Hardware name: Dell Inc. OptiPlex 7050/062KRH, BIOS 1.2.0 12/22/2016 [ 118.373542] ================================================================== [ 118.381677] not ok 4 kmalloc_track_caller_oob_right [ 118.381777] ================================================================== ... [ 183.260210] ok 75 copy_user_test_oob [ 183.279934] # kasan: pass:50 fail:1 skip:24 total:75 [ 183.284696] # Totals: pass:50 fail:1 skip:24 total:75 [ 183.290383] not ok 1 kasan The kernel config and materials to reproduce are available at: https://download.01.org/0day-ci/archive/20250108/202501081209.b7d8b735-lkp@intel.com -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki