From: Guenter Roeck <linux@roeck-us.net>
To: "Aneesh Kumar K.V" <aneesh.kumar@linux.ibm.com>
Cc: linux-mm@kvack.org, akpm@linux-foundation.org,
Anshuman Khandual <anshuman.khandual@arm.com>,
linuxppc-dev@lists.ozlabs.org
Subject: Re: [PATCH v4 13/13] mm/debug_vm_pgtable: Avoid none pte in pte_clear_test
Date: Sun, 11 Oct 2020 13:02:58 -0700 [thread overview]
Message-ID: <20201011200258.GA91021@roeck-us.net> (raw)
In-Reply-To: <20200902114222.181353-14-aneesh.kumar@linux.ibm.com>
On Wed, Sep 02, 2020 at 05:12:22PM +0530, Aneesh Kumar K.V wrote:
> pte_clear_tests operate on an existing pte entry. Make sure that
> is not a none pte entry.
>
> Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com>
This patch causes all riscv64 images to crash. Reverting it
as well as the follow-up patch fixes the problem, but there are
still several warning messages starting with
BUG kmem_cache (Not tainted): Freechain corrupt
I did not try to track down this other problem.
A detailed crash log is at
https://kerneltests.org/builders/qemu-riscv64-next/builds/523/steps/qemubuildcommand/logs/stdio
Bisect log is attached.
Guenter
---
# bad: [d67bc7812221606e1886620a357b13f906814af7] Add linux-next specific files for 20201009
# good: [549738f15da0e5a00275977623be199fbbf7df50] Linux 5.9-rc8
git bisect start 'HEAD' 'v5.9-rc8'
# good: [b71be15b496cc71a3434a198fc1a1b9e08af6c57] Merge remote-tracking branch 'bpf-next/master' into master
git bisect good b71be15b496cc71a3434a198fc1a1b9e08af6c57
# good: [3542e5a87341bdca83e3d7f061b0f4e0f4c23f73] Merge remote-tracking branch 'spi/for-next' into master
git bisect good 3542e5a87341bdca83e3d7f061b0f4e0f4c23f73
# good: [65f9c957115c749ba79fb469083caf14101a93bb] Merge remote-tracking branch 'char-misc/char-misc-next' into master
git bisect good 65f9c957115c749ba79fb469083caf14101a93bb
# good: [aadfe5ecb55641d5994a5f3b27f074beead8f49b] Merge remote-tracking branch 'scsi-mkp/for-next' into master
git bisect good aadfe5ecb55641d5994a5f3b27f074beead8f49b
# good: [060196553d119d5c252f09ed5b0316929cc25983] Merge remote-tracking branch 'memblock/for-next' into master
git bisect good 060196553d119d5c252f09ed5b0316929cc25983
# bad: [d2340d89ffa6d2643f0689600dbf0969d86fdd3c] x86/setup: simplify initrd relocation and reservation
git bisect bad d2340d89ffa6d2643f0689600dbf0969d86fdd3c
# bad: [4b23734f5ba1a0487b2b569a9e64e4e5360009c1] mm/swapfile.c: remove unnecessary goto out in _swap_info_get()
git bisect bad 4b23734f5ba1a0487b2b569a9e64e4e5360009c1
# good: [b30f5277e97be65a99ca5af3d4337cb9acbf8fa7] device-dax: introduce 'struct dev_dax' typed-driver operations
git bisect good b30f5277e97be65a99ca5af3d4337cb9acbf8fa7
# good: [8c2075296dbbbce685fa14bbf46d29fba54f8a62] mm/debug_vm_pgtable: drop hugetlb_advanced_tests()
git bisect good 8c2075296dbbbce685fa14bbf46d29fba54f8a62
# bad: [52ce97889b3c85826995d22a690cd1430c14f316] mm/filemap: fix filemap_map_pages for THP
git bisect bad 52ce97889b3c85826995d22a690cd1430c14f316
# bad: [1ddc0b707be99faece6cdd77f34544f408c6617d] proc: optimise smaps for shmem entries
git bisect bad 1ddc0b707be99faece6cdd77f34544f408c6617d
# bad: [5d685be3785638202430b6baa2ecde482b52c41e] mm: factor find_get_incore_page out of mincore_page
git bisect bad 5d685be3785638202430b6baa2ecde482b52c41e
# bad: [0797f84d689b9f1e7256d954280b28bfeaf5b1fc] mm/debug_vm_pgtable: avoid doing memory allocation with pgtable_t mapped.
git bisect bad 0797f84d689b9f1e7256d954280b28bfeaf5b1fc
# bad: [4f9a78e6bcd60a25b187adc1526ab3815fc40dae] mm/debug_vm_pgtable: avoid none pte in pte_clear_test
git bisect bad 4f9a78e6bcd60a25b187adc1526ab3815fc40dae
# first bad commit: [4f9a78e6bcd60a25b187adc1526ab3815fc40dae] mm/debug_vm_pgtable: avoid none pte in pte_clear_test
WARNING: multiple messages have this Message-ID (diff)
From: Guenter Roeck <linux@roeck-us.net>
To: "Aneesh Kumar K.V" <aneesh.kumar@linux.ibm.com>
Cc: linux-mm@kvack.org, akpm@linux-foundation.org,
mpe@ellerman.id.au, linuxppc-dev@lists.ozlabs.org,
Anshuman Khandual <anshuman.khandual@arm.com>
Subject: Re: [PATCH v4 13/13] mm/debug_vm_pgtable: Avoid none pte in pte_clear_test
Date: Sun, 11 Oct 2020 13:02:58 -0700 [thread overview]
Message-ID: <20201011200258.GA91021@roeck-us.net> (raw)
In-Reply-To: <20200902114222.181353-14-aneesh.kumar@linux.ibm.com>
On Wed, Sep 02, 2020 at 05:12:22PM +0530, Aneesh Kumar K.V wrote:
> pte_clear_tests operate on an existing pte entry. Make sure that
> is not a none pte entry.
>
> Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com>
This patch causes all riscv64 images to crash. Reverting it
as well as the follow-up patch fixes the problem, but there are
still several warning messages starting with
BUG kmem_cache (Not tainted): Freechain corrupt
I did not try to track down this other problem.
A detailed crash log is at
https://kerneltests.org/builders/qemu-riscv64-next/builds/523/steps/qemubuildcommand/logs/stdio
Bisect log is attached.
Guenter
---
# bad: [d67bc7812221606e1886620a357b13f906814af7] Add linux-next specific files for 20201009
# good: [549738f15da0e5a00275977623be199fbbf7df50] Linux 5.9-rc8
git bisect start 'HEAD' 'v5.9-rc8'
# good: [b71be15b496cc71a3434a198fc1a1b9e08af6c57] Merge remote-tracking branch 'bpf-next/master' into master
git bisect good b71be15b496cc71a3434a198fc1a1b9e08af6c57
# good: [3542e5a87341bdca83e3d7f061b0f4e0f4c23f73] Merge remote-tracking branch 'spi/for-next' into master
git bisect good 3542e5a87341bdca83e3d7f061b0f4e0f4c23f73
# good: [65f9c957115c749ba79fb469083caf14101a93bb] Merge remote-tracking branch 'char-misc/char-misc-next' into master
git bisect good 65f9c957115c749ba79fb469083caf14101a93bb
# good: [aadfe5ecb55641d5994a5f3b27f074beead8f49b] Merge remote-tracking branch 'scsi-mkp/for-next' into master
git bisect good aadfe5ecb55641d5994a5f3b27f074beead8f49b
# good: [060196553d119d5c252f09ed5b0316929cc25983] Merge remote-tracking branch 'memblock/for-next' into master
git bisect good 060196553d119d5c252f09ed5b0316929cc25983
# bad: [d2340d89ffa6d2643f0689600dbf0969d86fdd3c] x86/setup: simplify initrd relocation and reservation
git bisect bad d2340d89ffa6d2643f0689600dbf0969d86fdd3c
# bad: [4b23734f5ba1a0487b2b569a9e64e4e5360009c1] mm/swapfile.c: remove unnecessary goto out in _swap_info_get()
git bisect bad 4b23734f5ba1a0487b2b569a9e64e4e5360009c1
# good: [b30f5277e97be65a99ca5af3d4337cb9acbf8fa7] device-dax: introduce 'struct dev_dax' typed-driver operations
git bisect good b30f5277e97be65a99ca5af3d4337cb9acbf8fa7
# good: [8c2075296dbbbce685fa14bbf46d29fba54f8a62] mm/debug_vm_pgtable: drop hugetlb_advanced_tests()
git bisect good 8c2075296dbbbce685fa14bbf46d29fba54f8a62
# bad: [52ce97889b3c85826995d22a690cd1430c14f316] mm/filemap: fix filemap_map_pages for THP
git bisect bad 52ce97889b3c85826995d22a690cd1430c14f316
# bad: [1ddc0b707be99faece6cdd77f34544f408c6617d] proc: optimise smaps for shmem entries
git bisect bad 1ddc0b707be99faece6cdd77f34544f408c6617d
# bad: [5d685be3785638202430b6baa2ecde482b52c41e] mm: factor find_get_incore_page out of mincore_page
git bisect bad 5d685be3785638202430b6baa2ecde482b52c41e
# bad: [0797f84d689b9f1e7256d954280b28bfeaf5b1fc] mm/debug_vm_pgtable: avoid doing memory allocation with pgtable_t mapped.
git bisect bad 0797f84d689b9f1e7256d954280b28bfeaf5b1fc
# bad: [4f9a78e6bcd60a25b187adc1526ab3815fc40dae] mm/debug_vm_pgtable: avoid none pte in pte_clear_test
git bisect bad 4f9a78e6bcd60a25b187adc1526ab3815fc40dae
# first bad commit: [4f9a78e6bcd60a25b187adc1526ab3815fc40dae] mm/debug_vm_pgtable: avoid none pte in pte_clear_test
next prev parent reply other threads:[~2020-10-11 20:04 UTC|newest]
Thread overview: 128+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-09-02 11:42 [PATCH v4 00/13] mm/debug_vm_pgtable fixes Aneesh Kumar K.V
2020-09-02 11:42 ` Aneesh Kumar K.V
2020-09-02 11:42 ` [PATCH v4 01/13] powerpc/mm: Add DEBUG_VM WARN for pmd_clear Aneesh Kumar K.V
2020-09-02 11:42 ` Aneesh Kumar K.V
2020-09-02 11:42 ` [PATCH v4 02/13] powerpc/mm: Move setting pte specific flags to pfn_pte Aneesh Kumar K.V
2020-09-02 11:42 ` Aneesh Kumar K.V
2020-09-02 12:30 ` Christophe Leroy
2020-09-02 11:42 ` [PATCH v4 03/13] mm/debug_vm_pgtable/ppc64: Avoid setting top bits in radom value Aneesh Kumar K.V
2020-09-02 11:42 ` Aneesh Kumar K.V
2020-09-04 4:03 ` Anshuman Khandual
2020-09-04 4:03 ` Anshuman Khandual
2020-09-02 11:42 ` [PATCH v4 04/13] mm/debug_vm_pgtables/hugevmap: Use the arch helper to identify huge vmap support Aneesh Kumar K.V
2020-09-02 11:42 ` Aneesh Kumar K.V
2020-09-02 12:40 ` Christophe Leroy
2020-09-02 12:53 ` Aneesh Kumar K.V
2020-09-04 4:08 ` Anshuman Khandual
2020-09-04 4:08 ` Anshuman Khandual
2020-09-02 11:42 ` [PATCH v4 05/13] mm/debug_vm_pgtable/savedwrite: Enable savedwrite test with CONFIG_NUMA_BALANCING Aneesh Kumar K.V
2020-09-02 11:42 ` Aneesh Kumar K.V
2020-09-04 4:09 ` Anshuman Khandual
2020-09-04 4:09 ` Anshuman Khandual
2020-09-02 11:42 ` [PATCH v4 06/13] mm/debug_vm_pgtable/THP: Mark the pte entry huge before using set_pmd/pud_at Aneesh Kumar K.V
2020-09-02 11:42 ` Aneesh Kumar K.V
2020-09-04 5:21 ` Anshuman Khandual
2020-09-04 5:21 ` Anshuman Khandual
2020-09-02 11:42 ` [PATCH v4 07/13] mm/debug_vm_pgtable/set_pte/pmd/pud: Don't use set_*_at to update an existing pte entry Aneesh Kumar K.V
2020-09-02 11:42 ` Aneesh Kumar K.V
2020-09-04 5:34 ` Anshuman Khandual
2020-09-04 5:34 ` Anshuman Khandual
2020-09-02 11:42 ` [PATCH v4 08/13] mm/debug_vm_pgtable/locks: Move non page table modifying test together Aneesh Kumar K.V
2020-09-02 11:42 ` Aneesh Kumar K.V
2020-09-04 3:58 ` Anshuman Khandual
2020-09-04 3:58 ` Anshuman Khandual
2020-09-02 11:42 ` [PATCH v4 09/13] mm/debug_vm_pgtable/locks: Take correct page table lock Aneesh Kumar K.V
2020-09-02 11:42 ` Aneesh Kumar K.V
2020-09-04 5:39 ` Anshuman Khandual
2020-09-04 5:39 ` Anshuman Khandual
2020-09-02 11:42 ` [PATCH v4 10/13] mm/debug_vm_pgtable/thp: Use page table depost/withdraw with THP Aneesh Kumar K.V
2020-09-02 11:42 ` Aneesh Kumar K.V
2020-09-04 4:21 ` Anshuman Khandual
2020-09-04 4:21 ` Anshuman Khandual
2020-09-02 11:42 ` [PATCH v4 11/13] mm/debug_vm_pgtable/pmd_clear: Don't use pmd/pud_clear on pte entries Aneesh Kumar K.V
2020-09-02 11:42 ` Aneesh Kumar K.V
2020-09-04 6:03 ` Anshuman Khandual
2020-09-04 6:03 ` Anshuman Khandual
2020-09-02 11:42 ` [PATCH v4 12/13] mm/debug_vm_pgtable/hugetlb: Disable hugetlb test on ppc64 Aneesh Kumar K.V
2020-09-02 11:42 ` Aneesh Kumar K.V
2020-09-04 6:19 ` Anshuman Khandual
2020-09-04 6:19 ` Anshuman Khandual
2020-09-02 11:42 ` [PATCH v4 13/13] mm/debug_vm_pgtable: Avoid none pte in pte_clear_test Aneesh Kumar K.V
2020-09-02 11:42 ` Aneesh Kumar K.V
2020-09-11 2:13 ` Nathan Chancellor
2020-09-11 2:13 ` Nathan Chancellor
2020-09-11 5:21 ` Aneesh Kumar K.V
2020-09-11 5:21 ` Aneesh Kumar K.V
2020-09-11 5:21 ` Aneesh Kumar K.V
2020-09-23 3:14 ` Anshuman Khandual
2020-09-23 3:14 ` Anshuman Khandual
2020-09-23 3:14 ` Anshuman Khandual
2020-10-11 20:02 ` Guenter Roeck [this message]
2020-10-11 20:02 ` Guenter Roeck
2020-10-12 4:29 ` Aneesh Kumar K.V
2020-10-12 4:29 ` Aneesh Kumar K.V
2020-10-12 4:29 ` Aneesh Kumar K.V
2020-09-02 11:46 ` Aneesh Kumar K.V
2020-09-02 11:46 ` Aneesh Kumar K.V
2020-09-04 4:16 ` Anshuman Khandual
2020-09-04 4:16 ` Anshuman Khandual
2020-09-04 6:48 ` [PATCH v4 00/13] mm/debug_vm_pgtable fixes Anshuman Khandual
2020-09-04 6:48 ` Anshuman Khandual
2020-09-04 6:48 ` Anshuman Khandual
2020-09-04 6:48 ` Anshuman Khandual
2020-09-04 15:26 ` Gerald Schaefer
2020-09-04 15:26 ` Gerald Schaefer
2020-09-04 15:26 ` Gerald Schaefer
2020-09-04 15:26 ` Gerald Schaefer
2020-09-04 16:01 ` Gerald Schaefer
2020-09-04 16:01 ` Gerald Schaefer
2020-09-04 16:01 ` Gerald Schaefer
2020-09-04 16:01 ` Gerald Schaefer
2020-09-04 17:53 ` Gerald Schaefer
2020-09-04 17:53 ` Gerald Schaefer
2020-09-04 17:53 ` Gerald Schaefer
2020-09-04 17:53 ` Gerald Schaefer
2020-09-09 8:38 ` Anshuman Khandual
2020-09-09 8:38 ` Anshuman Khandual
2020-09-09 8:38 ` Anshuman Khandual
2020-09-09 8:38 ` Anshuman Khandual
2020-09-08 15:39 ` Gerald Schaefer
2020-09-08 15:39 ` Gerald Schaefer
2020-09-08 15:39 ` Gerald Schaefer
2020-09-08 15:39 ` Gerald Schaefer
2020-09-09 6:08 ` Aneesh Kumar K.V
2020-09-09 6:08 ` Aneesh Kumar K.V
2020-09-09 6:08 ` Aneesh Kumar K.V
2020-09-09 6:08 ` Aneesh Kumar K.V
2020-09-09 11:16 ` Gerald Schaefer
2020-09-09 11:16 ` Gerald Schaefer
2020-09-09 11:16 ` Gerald Schaefer
2020-09-09 11:16 ` Gerald Schaefer
2020-09-09 8:15 ` Anshuman Khandual
2020-09-09 8:15 ` Anshuman Khandual
2020-09-09 8:15 ` Anshuman Khandual
2020-09-09 8:15 ` Anshuman Khandual
2020-09-09 11:10 ` Gerald Schaefer
2020-09-09 11:10 ` Gerald Schaefer
2020-09-09 11:10 ` Gerald Schaefer
2020-09-09 11:10 ` Gerald Schaefer
2020-09-09 8:08 ` Anshuman Khandual
2020-09-09 8:08 ` Anshuman Khandual
2020-09-09 8:08 ` Anshuman Khandual
2020-09-09 8:08 ` Anshuman Khandual
2020-09-09 11:36 ` Gerald Schaefer
2020-09-09 11:36 ` Gerald Schaefer
2020-09-09 11:36 ` Gerald Schaefer
2020-09-09 11:36 ` Gerald Schaefer
2020-09-13 11:03 ` [PATCH] mm/debug_vm_pgtable: Avoid doing memory allocation with pgtable_t mapped Aneesh Kumar K.V
2020-09-13 11:03 ` Aneesh Kumar K.V
2020-09-13 13:42 ` Matthew Wilcox
2020-09-13 13:42 ` Matthew Wilcox
2020-10-13 20:58 ` [PATCH v4 00/13] mm/debug_vm_pgtable fixes Andrew Morton
2020-10-13 20:58 ` Andrew Morton
2020-10-14 3:15 ` Aneesh Kumar K.V
2020-10-14 3:15 ` Aneesh Kumar K.V
2020-10-14 20:36 ` Andrew Morton
2020-10-14 20:36 ` Andrew Morton
2020-10-15 2:59 ` Anshuman Khandual
2020-10-15 2:59 ` Anshuman Khandual
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