Re: [f2fs-dev] f2fs node footer data corruption in Android device

[Chao Yu via Linux-f2fs-devel <linux-f2fs-devel@lists.sourceforge.net>]

Zhiguo,

On 4/25/25 13:11, Zhiguo Niu wrote:
> Hi Chao and Jaegeuk,
> 
> I encountered a problem with node footer data being corrupted on an
> Android device.(kernel version 6.6 and android version:15)
> after I merged the following patches, the problem still exists.
> https://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fs-tools.git/commit/?h=dev-test&id=eba08414c585f90760c4312f57dea78ea45cb5cb
> https://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fs.git/commit/fs/f2fs?h=dev-test&id=19426c4988aa85298c1b4caf2889d37ec5c80fea
> https://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fs.git/commit/fs/f2fs?h=dev-test&id=c2ecba026586cda6c7dc0fe9e6e60e7e9386c3bd
> and there is no nat_bits in mount option.
> 
> I am still debugging, and would like to ask do you have any other
> hints or suggestions?
> The issue seem to be closely related to adb remount.
> 
> test steps:
> ping 127.0.0.1 -n 20 > nul
> adb.exe -s mydevice  wait-for-device
> adb.exe  -s mydevice reboot bootloader
> fastboot -s mydevice  erase userdata
> fastboot -s mydevice  erase cache
> fastboot -s mydevice  reboot
> ping 127.0.0.1 -n 30 > nul
> adb.exe -s mydevice wait-for-device
> adb.exe -s mydevice root
> adb.exe -s mydevice remount

Any change for mount option? Can you provide mount option before/after
remount?

> adb.exe -s mydevice shell   rm -rf /data/somefile/*

How about enabling all f2fs tracepoints to catch how target node was
updated?

Thanks,

> 
> dmesg:
> dm-59: userdata partition, dm-7: scratch image partition is for adb remount
> [    3.893630] F2FS-fs (dm-59): Using encoding defined by superblock:
> utf8-12.1.0 with flags 0x0
> [    3.930213] F2FS-fs (dm-59): Mounted with checkpoint version = 38485b2d
> [   20.584169] F2FS-fs (dm-7): Mounted with checkpoint version = 42130ef
> [   38.039122] F2FS-fs (dm-59): inconsistent node block, nid:1426,
> node_footer[nid:129565021,ino:2756062298,ofs:26782845,cpver:6421703165179826912,blkaddr:3577851147]
> [   38.048310] F2FS-fs (dm-59): inconsistent node block, nid:1426,
> node_footer[nid:129565021,ino:2756062298,ofs:26782845,cpver:6421703165179826912,blkaddr:3577851147]
> [   38.051725] F2FS-fs (dm-59): inconsistent node block, nid:1426,
> node_footer[nid:129565021,ino:2756062298,ofs:26782845,cpver:6421703165179826912,blkaddr:3577851147]
> thanks



_______________________________________________
Linux-f2fs-devel mailing list
Linux-f2fs-devel@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/linux-f2fs-devel