From: Chen Jun <chenjun102@huawei.com> To: <linux-kernel@vger.kernel.org>, <linux-arm-kernel@lists.infradead.org> Cc: <akpm@linux-foundation.org>, <catalin.marinas@arm.com>, <will@kernel.org>, <rui.xiang@huawei.com> Subject: [PATCH 0/2] Fix page_owner broken on arm64 Date: Wed, 17 Mar 2021 14:20:48 +0000 [thread overview] Message-ID: <20210317142050.57712-1-chenjun102@huawei.com> (raw) On arm64, cat /sys/kernel/debug/page_owner All pages return the same stack stack_trace_save+0x4c/0x78 register_early_stack+0x34/0x70 init_page_owner+0x34/0x230 page_ext_init+0x1bc/0x1dc The reason is arch_stack_walk save 2 more entries than before. To fix it, add skip in arch_stack_walk *** BLURB HERE *** 1. Prepare for 2, move stacktrace_cookie to .h 2. Fix the problem Chen Jun (2): stacktrace: Move struct stacktrace_cookie to stacktrace.h arm64: stacktrace: Add skip when task == current arch/arm64/kernel/stacktrace.c | 5 +++-- include/linux/stacktrace.h | 7 +++++++ kernel/stacktrace.c | 7 ------- 3 files changed, 10 insertions(+), 9 deletions(-) -- 2.9.4
WARNING: multiple messages have this Message-ID (diff)
From: Chen Jun <chenjun102@huawei.com> To: <linux-kernel@vger.kernel.org>, <linux-arm-kernel@lists.infradead.org> Cc: <akpm@linux-foundation.org>, <catalin.marinas@arm.com>, <will@kernel.org>, <rui.xiang@huawei.com> Subject: [PATCH 0/2] Fix page_owner broken on arm64 Date: Wed, 17 Mar 2021 14:20:48 +0000 [thread overview] Message-ID: <20210317142050.57712-1-chenjun102@huawei.com> (raw) On arm64, cat /sys/kernel/debug/page_owner All pages return the same stack stack_trace_save+0x4c/0x78 register_early_stack+0x34/0x70 init_page_owner+0x34/0x230 page_ext_init+0x1bc/0x1dc The reason is arch_stack_walk save 2 more entries than before. To fix it, add skip in arch_stack_walk *** BLURB HERE *** 1. Prepare for 2, move stacktrace_cookie to .h 2. Fix the problem Chen Jun (2): stacktrace: Move struct stacktrace_cookie to stacktrace.h arm64: stacktrace: Add skip when task == current arch/arm64/kernel/stacktrace.c | 5 +++-- include/linux/stacktrace.h | 7 +++++++ kernel/stacktrace.c | 7 ------- 3 files changed, 10 insertions(+), 9 deletions(-) -- 2.9.4 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
next reply other threads:[~2021-03-17 14:24 UTC|newest] Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top 2021-03-17 14:20 Chen Jun [this message] 2021-03-17 14:20 ` [PATCH 0/2] Fix page_owner broken on arm64 Chen Jun 2021-03-17 14:20 ` [PATCH 1/2] stacktrace: Move struct stacktrace_cookie to stacktrace.h Chen Jun 2021-03-17 14:20 ` Chen Jun 2021-03-17 14:20 ` [PATCH 2/2] arm64: stacktrace: Add skip when task == current Chen Jun 2021-03-17 14:20 ` Chen Jun 2021-03-17 18:36 ` Catalin Marinas 2021-03-17 18:36 ` Catalin Marinas 2021-03-17 19:34 ` Mark Rutland 2021-03-17 19:34 ` Mark Rutland 2021-03-18 3:24 ` chenjun (AM) 2021-03-18 3:24 ` chenjun (AM) 2021-03-18 13:22 ` chenjun (AM) 2021-03-18 13:22 ` chenjun (AM) 2021-03-18 16:17 ` Catalin Marinas 2021-03-18 16:17 ` Catalin Marinas 2021-03-18 17:12 ` Mark Rutland 2021-03-18 17:12 ` Mark Rutland 2021-03-18 18:36 ` Catalin Marinas 2021-03-18 18:36 ` Catalin Marinas 2021-03-17 22:23 ` [PATCH 0/2] Fix page_owner broken on arm64 Andrew Morton 2021-03-17 22:23 ` Andrew Morton
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