Re: Page cache corruption with mount/unmount of USB with Fat file system

2014-03-21 Thread Nilesh More
these calls seems to help measureExactStorage(imcs); break; } On Fri, Mar 21, 2014 at 12:09 AM, Nilesh More wrote: > I now know the source of p

Re: Page cache corruption with mount/unmount of USB with Fat file system

2014-03-21 Thread Nilesh More
these calls seems to help measureExactStorage(imcs); break; } On Fri, Mar 21, 2014 at 12:09 AM, Nilesh More nilesh99...@gmail.com wrote: I now know

Re: Page cache corruption with mount/unmount of USB with Fat file system

2014-03-20 Thread Nilesh More
, Nilesh On Thu, Mar 20, 2014 at 12:38 AM, Nilesh More wrote: > Hi Ted, > >>And I'll repeat the comments I made a few weeks ago. Last time you >>reported this, you included a dmesg output which included this: > >> [ 413.607849] usb 2-1.1: USB disconnect, device number

Re: Page cache corruption with mount/unmount of USB with Fat file system

2014-03-20 Thread Nilesh More
, Nilesh On Thu, Mar 20, 2014 at 12:38 AM, Nilesh More nilesh99...@gmail.com wrote: Hi Ted, And I'll repeat the comments I made a few weeks ago. Last time you reported this, you included a dmesg output which included this: [ 413.607849] usb 2-1.1: USB disconnect, device number 12 [ 414.022630

Re: Page cache corruption with mount/unmount of USB with Fat file system

2014-03-19 Thread Nilesh More
plug the USB drive. It might require couple of hotplug/hotunplug to see this issue. Thank you, Nilesh On Thu, Mar 20, 2014 at 12:31 AM, wrote: > On Thu, Mar 20, 2014 at 12:05:44AM +0530, Nilesh More wrote: >> Hi all, >> >> First of all sorry for the lengthy mail but I did

Page cache corruption with mount/unmount of USB with Fat file system

2014-03-19 Thread Nilesh More
Hi all, First of all sorry for the lengthy mail but I did not want to miss out on any details. The following issue that I am reporting occurs when I plugin the USB drive on android tablet with USB mount support. Please note that this issue may or may not occur the first time I hotplug the USB

Page cache corruption with mount/unmount of USB with Fat file system

2014-03-19 Thread Nilesh More
Hi all, First of all sorry for the lengthy mail but I did not want to miss out on any details. The following issue that I am reporting occurs when I plugin the USB drive on android tablet with USB mount support. Please note that this issue may or may not occur the first time I hotplug the USB

Re: Page cache corruption with mount/unmount of USB with Fat file system

2014-03-19 Thread Nilesh More
. It might require couple of hotplug/hotunplug to see this issue. Thank you, Nilesh On Thu, Mar 20, 2014 at 12:31 AM, ty...@mit.edu wrote: On Thu, Mar 20, 2014 at 12:05:44AM +0530, Nilesh More wrote: Hi all, First of all sorry for the lengthy mail but I did not want to miss out on any details

Re: Reporting a bug - Memory corruption in Linux kernel

2014-03-07 Thread Nilesh More
while invalidating them, incorrect data gets written to fat disk inodes(directory inodes) which results in the "invalid access to FAT" error prints. I guess next step would be to try and understand the page allocations in efi_partition and msdos_partition calls. Thank you, Nilesh On Sat, M

Re: Reporting a bug - Memory corruption in Linux kernel

2014-03-07 Thread Nilesh More
wrote: > On Fri, Mar 07, 2014 at 01:39:45AM +0530, Nilesh More wrote: >> Hi all, >> >> I am working on android bug wherein directory entries of ext4 file >> system get corrupted when USB is hotplugged (with auto mount support >> enabled). >> >> The l

Re: Reporting a bug - Memory corruption in Linux kernel

2014-03-07 Thread Nilesh More
ty...@mit.edu wrote: On Fri, Mar 07, 2014 at 01:39:45AM +0530, Nilesh More wrote: Hi all, I am working on android bug wherein directory entries of ext4 file system get corrupted when USB is hotplugged (with auto mount support enabled). The logs as below: [ 413.607849] usb 2-1.1: USB

Re: Reporting a bug - Memory corruption in Linux kernel

2014-03-07 Thread Nilesh More
data gets written to fat disk inodes(directory inodes) which results in the invalid access to FAT error prints. I guess next step would be to try and understand the page allocations in efi_partition and msdos_partition calls. Thank you, Nilesh On Sat, Mar 8, 2014 at 1:48 AM, Nilesh More nilesh99

Re: Reporting a bug - Memory corruption in Linux kernel

2014-03-06 Thread Nilesh More
going to debug further to try and get to root cause. Before that wanted to ask if is this A KNOWN ISSUE ? If not, any suggestions that would help me to quickly root cause this ? Thank you for your help, Nilesh On Fri, Mar 7, 2014 at 1:35 AM, Nilesh More wrote: > Hi all, > > I am workin

Re: Reporting a bug - Memory corruption in Linux kernel

2014-03-06 Thread Nilesh More
this ? Thank you for your help, Nilesh On Fri, Mar 7, 2014 at 1:35 AM, Nilesh More nilesh99...@gmail.com wrote: Hi all, I am working on android bug wherein directory entries of ext4 file system get corrupted when USB is hotplugged (with auto mount support enabled). The logs as below: [ 413.607849