On 06/19/2024, Chao Yu wrote:
> On 2024/6/18 10:23, Jaegeuk Kim wrote:
> > mkdir /mnt/test/comp
> > f2fs_io setflags compression /mnt/test/comp
> > dd if=/dev/zero of=/mnt/test/comp/testfile bs=16k count=1
> > truncate --size 13 /mnt/test/comp/testfile
> >
> > In the above scenario, we can get a BUG_ON.
> > kernel BUG at fs/f2fs/segment.c:3589!
> > Call Trace:
> > do_write_page+0x78/0x390 [f2fs]
> > f2fs_outplace_write_data+0x62/0xb0 [f2fs]
> > f2fs_do_write_data_page+0x275/0x740 [f2fs]
> > f2fs_write_single_data_page+0x1dc/0x8f0 [f2fs]
> > f2fs_write_multi_pages+0x1e5/0xae0 [f2fs]
> > f2fs_write_cache_pages+0xab1/0xc60 [f2fs]
> > f2fs_write_data_pages+0x2d8/0x330 [f2fs]
> > do_writepages+0xcf/0x270
> > __writeback_single_inode+0x44/0x350
> > writeback_sb_inodes+0x242/0x530
> > __writeback_inodes_wb+0x54/0xf0
> > wb_writeback+0x192/0x310
> > wb_workfn+0x30d/0x400
> >
> > The reason is we gave CURSEG_ALL_DATA_ATGC to COMPR_ADDR where the
> > page was set the gcing flag by set_cluster_dirty().
> >
> > Cc: stable@xxxxxxxxxxxxxxx
> > Fixes: 4961acdd65c9 ("f2fs: fix to tag gcing flag on page during block migration")
> > Signed-off-by: Jaegeuk Kim <jaegeuk@xxxxxxxxxx>
>
> Reviewed-by: Chao Yu <chao@xxxxxxxxxx>
Hi Jaegeuk,
I've been running my personal Pixel 8a device with this change for the past
3 days and haven't hit any kernal panics since applying it. Feel free to
include:
Tested-by: Will McVicker <willmcvicker@xxxxxxxxxx>
Thanks,
Will
