Hi
We're upgrading our systems from using a 5.1.7 based kernel to a
6.3.1 based kernel.
I'm experiencing some warnings popping out occasionally from the f2fs driver
****************************************************************************************
[ 137.225376] WARNING: CPU: 0 PID: 32 at fs/f2fs/extent_cache.c:755
__update_extent_tree_range+0x424/0x760
****************************************************************************************
and a trace:
****************************************************************************************
[ 460.206016] ------------[ cut here ]------------
[ 460.208340] WARNING: CPU: 0 PID: 154 at fs/f2fs/extent_cache.c:755
__update_extent_tree_range+0x424/0x760
[ 460.213183] Modules linked in:
[ 460.213200] CPU: 0 PID: 154 Comm: kworker/u4:5 Tainted: G
W 6.3.1-00256-g60164498d86b-dirty #7
[ 460.213216] Hardware name: Altera SOCFPGA
[ 460.213226] Workqueue: writeback wb_workfn (flush-179:0)
[ 460.213271] unwind_backtrace from show_stack+0x18/0x1c
[ 460.213306] show_stack from dump_stack_lvl+0x40/0x4c
[ 460.213335] dump_stack_lvl from __warn+0x84/0x15c
[ 460.213365] __warn from warn_slowpath_fmt+0xc4/0x1c0
[ 460.213391] warn_slowpath_fmt from
__update_extent_tree_range+0x424/0x760
[ 460.213418] __update_extent_tree_range from
__update_extent_cache+0x244/0x444
[ 460.213440] __update_extent_cache from
f2fs_outplace_write_data+0x80/0xec
[ 460.213461] f2fs_outplace_write_data from
f2fs_do_write_data_page+0x4e4/0x700
[ 460.213487] f2fs_do_write_data_page from
f2fs_write_single_data_page+0x524/0x720
[ 460.213513] f2fs_write_single_data_page from
f2fs_write_cache_pages+0x24c/0x590
[ 460.213539] f2fs_write_cache_pages from
f2fs_write_data_pages+0x238/0x388
[ 460.213563] f2fs_write_data_pages from do_writepages+0x80/0x1a4
[ 460.213597] do_writepages from __writeback_single_inode+0x4c/0x4cc
[ 460.213629] __writeback_single_inode from
writeback_sb_inodes+0x1f8/0x4cc
[ 460.213658] writeback_sb_inodes from __writeback_inodes_wb+0x40/0xe0
[ 460.213686] __writeback_inodes_wb from wb_writeback+0x250/0x3ac
[ 460.213713] wb_writeback from wb_workfn+0x2d4/0x5ac
[ 460.213741] wb_workfn from process_one_work+0x1e0/0x51c
[ 460.213776] process_one_work from worker_thread+0x60/0x518
[ 460.213806] worker_thread from kthread+0xf4/0x124
[ 460.213836] kthread from ret_from_fork+0x14/0x2c
[ 460.213856] Exception stack(0xf0cc5fb0 to 0xf0cc5ff8)
[ 460.213868] 5fa0: 00000000
00000000 00000000 00000000
[ 460.213879] 5fc0: 00000000 00000000 00000000 00000000 00000000
00000000 00000000 00000000
[ 460.213890] 5fe0: 00000000 00000000 00000000 00000000 00000013 00000000
[ 460.213899] ---[ end trace 0000000000000000 ]---
****************************************************************************************
This is after performing a format on the device in system to make sure
the filesystem was up to the same kernel revision.
How concerned should we be?
Note prior to the format we were getting a LOT or errors, some like
above and others with a different signature:
****************************************************************************************
[ 167.675107] WARNING: CPU: 0 PID: 32 at fs/f2fs/extent_cache.c:248
__insert_extent_tree+0x15c/0x174
****************************************************************************************
That one resulted in the entire system coming to a a halt..
Cheers
Richard T
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