On Wed, May 28, 2025 at 02:31:37PM +0800, kernel test robot wrote:
> 
> 
> Hello,
> 
> 
> for this change, we reported
> "[koverstreet-bcachefs:bcachefs-put-folio-assert] [bcachefs] 0718bafa21: 
> last_state.incomplete"
> in
> https://lore.kernel.org/all/[email protected]/ [1]
> upon Ice Lake.
> 
> now we notice the commit is in mainline, and we captured similar issue on
> another platform.
> 
> below full report FYI.
> 
> 
> kernel test robot noticed "last_state.incomplete" on:
> 
> commit: cd3cdb1ef706a1ac725194d81858d58375739b25 ("bcachefs: Single err 
> message for btree node reads")
> https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git master
> 
> [test failed on linus/master      914873bc7df913db988284876c16257e6ab772c6]
> [test failed on linux-next/master fefff2755f2aa4125dce2a1edfe7e545c7c621f2]
> 
> in testcase: xfstests
> version: xfstests-x86_64-e161fc34-1_20250526
> with following parameters:
> 
>       disk: 4HDD
>       fs: bcachefs
>       test: generic-group-67
> 
> 
> 
> config: x86_64-rhel-9.4-func
> compiler: gcc-12
> test machine: 8 threads 1 sockets Intel(R) Core(TM) i7-7700 CPU @ 3.60GHz 
> (Kaby Lake) with 32G memory
> 
> (please refer to attached dmesg/kmsg for entire log/backtrace)
> 
> 
> If you fix the issue in a separate patch/commit (i.e. not just a new version 
> of
> the same patch/commit), kindly add following tags
> | Reported-by: kernel test robot <[email protected]>
> | Closes: https://lore.kernel.org/oe-lkp/[email protected]
> 
> 
> The kernel config and materials to reproduce are available at:
> https://download.01.org/0day-ci/archive/20250528/[email protected]
> 
> 
> similar as report [1], from the dmesg in above link, we still didn't see any
> Call Trace, but below informations
> 
> 
> [   41.372233][ T1447] bcachefs (sda1): starting version 1.13: 
> inode_has_child_snapshots
> [   41.372233][ T1447]   allowing incompatible features above 0.0: (unknown 
> version)
> [   41.387511][ T1447] bcachefs (sda1): recovering from clean shutdown, 
> journal seq 20
> [   41.395125][ T1447] bcachefs (sda1): Doing compatible version upgrade from 
> 1.13: inode_has_child_snapshots to 1.25: extent_flags
> [   41.395125][ T1447]   running recovery passes: 
> check_allocations,check_extents_to_backpointers
> [   41.418989][  T335] LKP: stdout: 307: Kernel tests: Boot OK!
> [   41.418998][  T335] 
> [   41.494922][ T1447] bcachefs (sda1): error reading btree root 
> btree=accounting level=0: btree_node_read_error, fixing
> [   41.505517][ T1447] bcachefs (sda1): bch2_fs_recovery(): error 
> btree_node_read_error
> [   41.513201][ T1447] bcachefs (sda1): bch2_fs_start(): error starting 
> filesystem btree_node_read_error
> [   41.874130][ T1447] bcachefs: bch2_fs_get_tree() error: 
> btree_node_read_error
> [   46.990004][  T335] LKP: stdout: 307: HOSTNAME lkp-kbl-d01, MAC 
> 48:4d:7e:be:54:6f, kernel 6.15.0-rc4-00141-gcd3cdb1ef706 1
> [   46.990016][  T335] 
> [   47.103180][  T337] mount: /fs/sda1: can't read superblock on /dev/sda1.
> [   47.103189][  T337] 
> [   49.036739][  T337]        dmesg(1) may have more information after failed 
> mount system call.
> [   49.036751][  T337] 

Err, what is this?

Is this a fuzz test, something from a test suite I've never heard of?
The log certainly doesn't give any useful context.

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