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Thanks! > > got it. Thanks for suggestion! > > since 0af8489b02 is based on v6.1-rc2, we will test (both rectorture and boot) > with same config upon v6.1-rc2 to see if it's really clean there. > if so we will use dmesg.invalid_opcode:#[##] to trigger new bisect. > > will keep you updated. Thanks by more tests, we cannot make sure the v6.1-rc2 is clean, so we also checked v6.1-rc1 and v6.0. from results, we have low confidence that we can make a successful bisection based on them [1][2]. could you suggest? a further information not sure if it's helpful, [1][2] are both i386 based. we also tried to run boot tests on x86_64 upon commit 0af8489b02, whatever with or without CONFIG_DEBUG_PAGEALLOC/CONFIG_DEBUG_PAGEALLOC_ENABLE_DEFAULT, we never obseve similar issues (also run 999 times). [1] boot results: ========================================================================================= compiler/kconfig/rootfs/sleep/tbox_group/testcase: gcc-11/i386-randconfig-a012-20221226+CONFIG_DEBUG_PAGEALLOC+CONFIG_DEBUG_PAGEALLOC_ENABLE_DEFAULT/debian-11.1-i386-20220923.cgz/1/vm-snb/boot v6.0 v6.1-rc1 v6.1-rc2 56d5a2b9ba85a390473e86b4fe4 0af8489b0216fa1dd83e264bef8 ---------------- --------------------------- --------------------------- --------------------------- --------------------------- fail:runs %reproduction fail:runs %reproduction fail:runs %reproduction fail:runs %reproduction fail:runs | | | | | | | | | :999 0% 2:999 0% 1:999 1% 11:999 21% 208:999 dmesg.invalid_opcode:#[##] :999 0% :999 0% :999 0% 2:999 5% 51:999 dmesg.kernel_BUG_at_include/linux/mm.h :999 0% 1:999 0% :999 0% 4:999 4% 40:999 dmesg.kernel_BUG_at_include/linux/page-flags.h :999 0% 1:999 0% 1:999 0% 4:999 11% 111:999 dmesg.kernel_BUG_at_lib/list_debug.c :999 0% :999 0% :999 0% :999 0% 2:999 dmesg.kernel_BUG_at_mm/page_alloc.c :999 0% :999 0% :999 0% 1:999 0% 3:999 dmesg.kernel_BUG_at_mm/usercopy.c [2] rcutorture results: ========================================================================================= compiler/kconfig/rootfs/runtime/tbox_group/test/testcase/torture_type: gcc-11/i386-randconfig-a012-20221226+CONFIG_DEBUG_PAGEALLOC+CONFIG_DEBUG_PAGEALLOC_ENABLE_DEFAULT/debian-11.1-i386-20220923.cgz/300s/vm-snb/default/rcutorture/tasks-tracing v6.0 v6.1-rc1 v6.1-rc2 56d5a2b9ba85a390473e86b4fe4 0af8489b0216fa1dd83e264bef8 ---------------- --------------------------- --------------------------- --------------------------- --------------------------- fail:runs %reproduction fail:runs %reproduction fail:runs %reproduction fail:runs %reproduction fail:runs | | | | | | | | | :999 0% 3:999 0% :999 1% 8:998 20% 200:999 dmesg.invalid_opcode:#[##] :999 0% :999 0% :999 0% :998 5% 51:999 dmesg.kernel_BUG_at_include/linux/mm.h :999 0% :999 0% :999 0% 3:998 4% 42:999 dmesg.kernel_BUG_at_include/linux/page-flags.h :999 0% 3:999 0% :999 0% 4:998 10% 102:999 dmesg.kernel_BUG_at_lib/list_debug.c :999 0% :999 0% :999 0% :998 0% 2:999 dmesg.kernel_BUG_at_mm/page_alloc.c :999 0% :999 0% :999 0% 1:998 0% 3:999 dmesg.kernel_BUG_at_mm/usercopy.c > > > > >