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Date: Fri, 15 Feb 2019 10:20:10 -0800 (PST) From: "kernelci.org bot" <bot@...nelci.org> To: tomeu.vizoso@...labora.com, guillaume.tucker@...labora.com, Dan Williams <dan.j.williams@...el.com>, broonie@...nel.org, matthew.hart@...aro.org, Stephen Rothwell <sfr@...b.auug.org.au>, khilman@...libre.com, enric.balletbo@...labora.com, Andrew Morton <akpm@...ux-foundation.org> Cc: Nicholas Piggin <npiggin@...il.com>, Dominik Brodowski <linux@...inikbrodowski.net>, Masahiro Yamada <yamada.masahiro@...ionext.com>, Kees Cook <keescook@...omium.org>, "kernelci.org bot" <bot@...nelci.org>, Adrian Reber <adrian@...as.de>, linux-kernel@...r.kernel.org, Johannes Weiner <hannes@...xchg.org>, linux-mm@...ck.org, Mathieu Desnoyers <mathieu.desnoyers@...icios.com>, Michal Hocko <mhocko@...e.com>, Richard Guy Briggs <rgb@...hat.com>, "Peter Zijlstra (Intel)" <peterz@...radead.org> Subject: next/master boot bisection: next-20190215 on beaglebone-black * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * This automated bisection report was sent to you on the basis * * that you may be involved with the breaking commit it has * * found. No manual investigation has been done to verify it, * * and the root cause of the problem may be somewhere else. * * Hope this helps! * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * next/master boot bisection: next-20190215 on beaglebone-black Summary: Start: 7a92eb7cc1dc Add linux-next specific files for 20190215 Details: https://kernelci.org/boot/id/5c666ea959b514b017fe6017 Plain log: https://storage.kernelci.org//next/master/next-20190215/arm/multi_v7_defconfig+CONFIG_SMP=n/gcc-7/lab-collabora/boot-am335x-boneblack.txt HTML log: https://storage.kernelci.org//next/master/next-20190215/arm/multi_v7_defconfig+CONFIG_SMP=n/gcc-7/lab-collabora/boot-am335x-boneblack.html Result: 8dd037cc97d9 mm/shuffle: default enable all shuffling Checks: revert: PASS verify: PASS Parameters: Tree: next URL: git://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git Branch: master Target: beaglebone-black CPU arch: arm Lab: lab-collabora Compiler: gcc-7 Config: multi_v7_defconfig+CONFIG_SMP=n Test suite: boot Breaking commit found: ------------------------------------------------------------------------------- commit 8dd037cc97d9226c97c2ee1abb4e97eff71e0c8d Author: Dan Williams <dan.j.williams@...el.com> Date: Fri Feb 15 11:28:30 2019 +1100 mm/shuffle: default enable all shuffling Per Andrew's request arrange for all memory allocation shuffling code to be enabled by default. The page_alloc.shuffle command line parameter can still be used to disable shuffling at boot, but the kernel will default enable the shuffling if the command line option is not specified. Link: http://lkml.kernel.org/r/154943713572.3858443.11206307988382889377.stgit@dwillia2-desk3.amr.corp.intel.com Signed-off-by: Dan Williams <dan.j.williams@...el.com> Cc: Kees Cook <keescook@...omium.org> Cc: Michal Hocko <mhocko@...e.com> Cc: Dave Hansen <dave.hansen@...ux.intel.com> Cc: Keith Busch <keith.busch@...el.com> Signed-off-by: Andrew Morton <akpm@...ux-foundation.org> Signed-off-by: Stephen Rothwell <sfr@...b.auug.org.au> diff --git a/init/Kconfig b/init/Kconfig index 4531a97092c7..9d4b05e79a2d 100644 --- a/init/Kconfig +++ b/init/Kconfig @@ -1709,7 +1709,7 @@ config SLAB_MERGE_DEFAULT command line. config SLAB_FREELIST_RANDOM - default n + default y depends on SLAB || SLUB bool "SLAB freelist randomization" help @@ -1728,7 +1728,7 @@ config SLAB_FREELIST_HARDENED config SHUFFLE_PAGE_ALLOCATOR bool "Page allocator randomization" - default SLAB_FREELIST_RANDOM && ACPI_NUMA + default y help Randomization of the page allocator improves the average utilization of a direct-mapped memory-side-cache. See section diff --git a/mm/shuffle.c b/mm/shuffle.c index 3ce12481b1dc..a979b48be469 100644 --- a/mm/shuffle.c +++ b/mm/shuffle.c @@ -9,8 +9,8 @@ #include "internal.h" #include "shuffle.h" -DEFINE_STATIC_KEY_FALSE(page_alloc_shuffle_key); -static unsigned long shuffle_state __ro_after_init; +DEFINE_STATIC_KEY_TRUE(page_alloc_shuffle_key); +static unsigned long shuffle_state __ro_after_init = 1 << SHUFFLE_ENABLE; /* * Depending on the architecture, module parameter parsing may run diff --git a/mm/shuffle.h b/mm/shuffle.h index 777a257a0d2f..c1e91ec118be 100644 --- a/mm/shuffle.h +++ b/mm/shuffle.h @@ -19,7 +19,7 @@ enum mm_shuffle_ctl { #define SHUFFLE_ORDER (MAX_ORDER-1) #ifdef CONFIG_SHUFFLE_PAGE_ALLOCATOR -DECLARE_STATIC_KEY_FALSE(page_alloc_shuffle_key); +DECLARE_STATIC_KEY_TRUE(page_alloc_shuffle_key); extern void page_alloc_shuffle(enum mm_shuffle_ctl ctl); extern void __shuffle_free_memory(pg_data_t *pgdat); static inline void shuffle_free_memory(pg_data_t *pgdat) ------------------------------------------------------------------------------- Git bisection log: ------------------------------------------------------------------------------- git bisect start # good: [23e93c9b2cde73f9912d0d8534adbddd3dcc48f4] Revert "gfs2: read journal in large chunks to locate the head" git bisect good 23e93c9b2cde73f9912d0d8534adbddd3dcc48f4 # bad: [7a92eb7cc1dc4c63e3a2fa9ab8e3c1049f199249] Add linux-next specific files for 20190215 git bisect bad 7a92eb7cc1dc4c63e3a2fa9ab8e3c1049f199249 # good: [3811b833d598702c05fd25e36a60f134dd5413b3] Merge remote-tracking branch 'crypto/master' git bisect good 3811b833d598702c05fd25e36a60f134dd5413b3 # good: [c6cd1b643783f81eaa8e0d777ab0f887df905a45] Merge remote-tracking branch 'spi/for-next' git bisect good c6cd1b643783f81eaa8e0d777ab0f887df905a45 # good: [36514d08b01218e91810d4007820e0f7d69851fa] Merge remote-tracking branch 'staging/staging-next' git bisect good 36514d08b01218e91810d4007820e0f7d69851fa # good: [f84af8a897075fa5f07cd3f1dba6a5be015028a1] Merge remote-tracking branch 'livepatching/for-next' git bisect good f84af8a897075fa5f07cd3f1dba6a5be015028a1 # bad: [d9a4d0fe1030c19848a28f43f0ec1abc23303d94] dynamic_debug: move pr_err from module.c to ddebug_add_module git bisect bad d9a4d0fe1030c19848a28f43f0ec1abc23303d94 # good: [803117e440dde7fe8b77f80a9e592281f39e3789] mm/vmalloc.c: fix kernel BUG at mm/vmalloc.c:512! git bisect good 803117e440dde7fe8b77f80a9e592281f39e3789 # good: [131c16480ab397f4396dcba0e22edfe2fcb08702] mm, memcg: make memory.emin the baseline for utilisation determination git bisect good 131c16480ab397f4396dcba0e22edfe2fcb08702 # good: [a5f4f868c87d60e55abf7bcf2175da5996aa8807] filemap-drop-the-mmap_sem-for-all-blocking-operations-v6 git bisect good a5f4f868c87d60e55abf7bcf2175da5996aa8807 # bad: [d658bb3b0f49638946d385055f6fcf5ed905128f] kernel/panic.c: taint: fix debugfs_simple_attr.cocci warnings git bisect bad d658bb3b0f49638946d385055f6fcf5ed905128f # bad: [66eeeef52ba15aff9b7c5276e805f2970b9bfd0e] fs/proc/self.c: code cleanup for proc_setup_self() git bisect bad 66eeeef52ba15aff9b7c5276e805f2970b9bfd0e # bad: [8dd037cc97d9226c97c2ee1abb4e97eff71e0c8d] mm/shuffle: default enable all shuffling git bisect bad 8dd037cc97d9226c97c2ee1abb4e97eff71e0c8d # good: [0828998415b687cfcac66446e8c1fac8fe6190ba] filemap-drop-the-mmap_sem-for-all-blocking-operations-checkpatch-fixes git bisect good 0828998415b687cfcac66446e8c1fac8fe6190ba # good: [8061021c7c102891803bda7eed4d21873f49a857] mm: don't expose page to fast gup before it's ready git bisect good 8061021c7c102891803bda7eed4d21873f49a857 # first bad commit: [8dd037cc97d9226c97c2ee1abb4e97eff71e0c8d] mm/shuffle: default enable all shuffling -------------------------------------------------------------------------------
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