Hmm, I've just met the issue, with the commit 5640f768 reverted. It seems that the issue does not always happen. So, my bisection may not be correct.
At this moment, I don't have enough time to do bisection again.. Regards. [sorry for top posting, our corporate MTA is not good at e-mail writing for mailing list... ] ------- Original Message ------- Sender : Jongman Heo<jongman....@samsung.com> Date : 2012-10-23 12:30 (GMT+09:00) Title : 3.7-rc2 regression : file copied to CIFS-mounted directory corrupted Hi, all, With 3.7-rc2, I noticed that file copied to CIFS-mounted directory is corrupted. Integrity is checked by md5sum. 1. get md5sum of file located on local (ext4) disk 2. copy the file to CIFS-mounted directory 3. check md5sum of the copied file Host : Windows 7 Guest : Fedora 16 on VMWare Kernel : 3.7-rc2 Shared directory exists on Windows 7 Host, and Linux Guest on VMware mounts it using CIFS. I thought it was related to CIFS or VFS changes, but it wasn't. Below is a git bisect log, and first bad commit is 5640f768, "net: use a per task frag allocator". Reverting the commit 5640f768 fixes the corruption issue on CIFS directory. During revert, I got conflict in net/ipv4/raw.c. I took "parent of 5640f76" hunk to resolve it. # git bisect log git bisect start # bad: [6f0c0580b70c89094b3422ba81118c7b959c7556] Linux 3.7-rc2 git bisect bad 6f0c0580b70c89094b3422ba81118c7b959c7556 # good: [a0d271cbfed1dd50278c6b06bead3d00ba0a88f9] Linux 3.6 git bisect good a0d271cbfed1dd50278c6b06bead3d00ba0a88f9 # good: [fec344e3f31aa911297cd3a4639432d983b1f324] cifs: change cifs_call_async to use smb_rqst structs git bisect good fec344e3f31aa911297cd3a4639432d983b1f324 # good: [3d6d854a13844223b603fd7a16a4a4a4afd62c72] cifs: add FL_CLOSE to fl_flags mask in cifs_read_flock git bisect good 3d6d854a13844223b603fd7a16a4a4a4afd62c72 # good: [f065fd099fc475333fc7a55677a7f64764445d55] CIFS: Fix possible freed pointer dereference in CIFS_SessSetup git bisect good f065fd099fc475333fc7a55677a7f64764445d55 # bad: [b7a10626c8bc88fd097a8bb4486c89558f89320c] [CIFS] WARN_ON_ONCE if kernel_sendmsg() returns -ENOSPC git bisect bad b7a10626c8bc88fd097a8bb4486c89558f89320c # good: [1d4ab9077681b7cce60ff46e3a42fe2dafa0b83d] [CIFS] Fix indentation of fs/cifs/Kconfig entries git bisect good 1d4ab9077681b7cce60ff46e3a42fe2dafa0b83d # bad: [aab174f0df5d72d31caccf281af5f614fa254578] Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs git bisect bad aab174f0df5d72d31caccf281af5f614fa254578 # good: [d9a807461fc8cc0d6ba589ea0730d139122af012] Merge tag 'usb-3.6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb git bisect good d9a807461fc8cc0d6ba589ea0730d139122af012 # good: [a20acf99f75e49271381d65db097c9763060a1e8] Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-next git bisect good a20acf99f75e49271381d65db097c9763060a1e8 # bad: [d379142bc4d9b78cdd9fc5aa696ca1ea083fb7d4] be2net: fixup log messages git bisect bad d379142bc4d9b78cdd9fc5aa696ca1ea083fb7d4 # good: [2a35cfa591ac63f17815c2d9432b799e37527980] r8169: add D-Link DGE-560T identifiers. git bisect good 2a35cfa591ac63f17815c2d9432b799e37527980 # good: [9316f0e3c6ba524d8fa14bfded048b252891931a] Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-next into for-davem git bisect good 9316f0e3c6ba524d8fa14bfded048b252891931a # good: [623df484a777f3c00c1ea3d6a7565b8d8ac688a1] tcp: extract code to compute SYNACK RTT git bisect good 623df484a777f3c00c1ea3d6a7565b8d8ac688a1 # bad: [c523530ce17defe6b28ccfe622c506488f430866] can: c_can: fix segfault during rmmod git bisect bad c523530ce17defe6b28ccfe622c506488f430866 # good: [6ee584be3ee30f72dec8a8ca87bc10824e27a631] netfilter: nfnetlink_queue: add NFQA_CAP_LEN attribute git bisect good 6ee584be3ee30f72dec8a8ca87bc10824e27a631 # good: [725b9c0425f54450d1f376befb85dae706ea0c7a] qeth: cleanup channel path descriptor function git bisect good 725b9c0425f54450d1f376befb85dae706ea0c7a # good: [0cf833aefaa85bbfce3ff70485e5534e09254773] net: loopback: set default mtu to 64K git bisect good 0cf833aefaa85bbfce3ff70485e5534e09254773 # bad: [9e49e88958feb41ec701fa34b44723dabadbc28c] filter: add XOR instruction for use with X/K git bisect bad 9e49e88958feb41ec701fa34b44723dabadbc28c # bad: [5640f7685831e088fe6c2e1f863a6805962f8e81] net: use a per task frag allocator git bisect bad 5640f7685831e088fe6c2e1f863a6805962f8e81 # good: [b98b8babd6e3370fadb7c6eaacb00eb2f6344a6c] gianfar: Change default HW Tx queue scheduling mode git bisect good b98b8babd6e3370fadb7c6eaacb00eb2f6344a6c N�����r��y����b�X��ǧv�^�){.n�+����{����zX����ܨ}���Ơz�&j:+v�������zZ+��+zf���h���~����i���z��w���?�����&�)ߢf��^jǫy�m��@A�a��� 0��h���i