Re: [gbefb] WARNING: CPU: 1 PID: 1 at lib/dma-debug.c:1041 check_unmap()
From: Laura Abbott
Date: Wed Mar 05 2014 - 18:00:42 EST
On 3/5/2014 5:38 AM, Fengguang Wu wrote:
Greetings,
I got the below dmesg and the first bad commit is
commit c060f943d0929f3e429c5d9522290584f6281d6e
Author: Laura Abbott <lauraa@xxxxxxxxxxxxxx>
AuthorDate: Fri Jan 11 14:31:51 2013 -0800
Commit: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>
CommitDate: Fri Jan 11 14:54:55 2013 -0800
mm: use aligned zone start for pfn_to_bitidx calculation
[ 7.951495] gbefb: couldn't allocate framebuffer memory
[ 7.952974] ------------[ cut here ]------------
[ 7.952974] ------------[ cut here ]------------
[ 7.954307] WARNING: CPU: 1 PID: 1 at lib/dma-debug.c:1041 check_unmap+0x126/0x702()
git bisect start v3.8 v3.7 --
git bisect good 8d91a42e54eebc43f4d8f6064751ccba73528275 # 12:16 30+ 10 Merge tag 'omap-late-cleanups' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
git bisect bad 910ffdb18a6408e14febbb6e4b6840fd2c928c82 # 12:21 0- 11 ptrace: introduce signal_wake_up_state() and ptrace_signal_wake_up()
git bisect good bfbbd96c51b441b7a9a08762aa9ab832f6655b2c # 12:29 30+ 12 audit: fix auditfilter.c kernel-doc warnings
git bisect bad a6d3bd274b85218bf7dda925d14db81e1a8268b3 # 12:35 0- 22 Merge tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/cmarinas/linux-aarch64
git bisect bad 3441f0d26d02ec8073ea9ac7d1a4da8a9818ad59 # 12:41 0- 2 Merge tag 'driver-core-3.8-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core
git bisect bad c727b4c63c9bf33c65351bbcc738161edb444b24 # 12:45 0- 4 Merge branch 'akpm' (incoming fixes from Andrew)
git bisect good 47ecfcb7d01418fcbfbc75183ba5e28e98b667b2 # 12:54 30+ 12 mm: compaction: Partially revert capture of suitable high-order page
git bisect good 52b820d917c7c8c1b2ddec2f0ac165b67267feec # 12:58 30+ 9 Merge branch 'drm-fixes' of git://people.freedesktop.org/~airlied/linux
git bisect good 93ccb3910ae3dbff6d224aecd22d8eece3d70ce9 # 13:01 30+ 16 Merge tag 'nfs-for-3.8-3' of git://git.linux-nfs.org/projects/trondmy/linux-nfs
git bisect bad 1b963c81b14509e330e0fe3218b645ece2738dc5 # 13:08 0- 5 lockdep, rwsem: provide down_write_nest_lock()
git bisect good c0232ae861df679092c15960b6cd9f589d9b7177 # 13:23 30+ 9 mm: memblock: fix wrong memmove size in memblock_merge_regions()
git bisect bad c060f943d0929f3e429c5d9522290584f6281d6e # 13:26 0- 10 mm: use aligned zone start for pfn_to_bitidx calculation
git bisect good 6d92d4f6a74766cc885b18218268e0c47fbca399 # 13:31 30+ 8 fs/exec.c: work around icc miscompilation
# first bad commit: [c060f943d0929f3e429c5d9522290584f6281d6e] mm: use aligned zone start for pfn_to_bitidx calculation
git bisect good 6d92d4f6a74766cc885b18218268e0c47fbca399 # 13:36 90+ 52 fs/exec.c: work around icc miscompilation
git bisect bad 0964c4d936f53872725d96bb04d490a70aa1165a # 13:37 0- 17 0day head guard for 'devel-hourly-2014022108'
git bisect bad dbf1b162bc9a01d93fa2d2ab3e8e064528575516 # 13:41 76- 14 Revert "mm: use aligned zone start for pfn_to_bitidx calculation"
git bisect bad d158fc7f36a25e19791d25a55da5623399a2644f # 13:45 2- 7 Merge tag 'pci-v3.14-fixes-1' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci
git bisect bad 12f1d94f0c8b256c04cb9b6b5dd989c32e44f11b # 13:46 0- 8 Add linux-next specific files for 20140220
Thanks,
Fengguang
I'm not sure how much that tells you, that patch was known to have a bug
which was fixed by 7c45512df987c5619db041b5c9b80d281e26d3db ( mm: fix
pageblock bitmap allocation)
Thanks,
Laura
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