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| author | Christoph Hellwig <[email protected]> | 2025-04-23 04:59:41 +0000 |
|---|---|---|
| committer | Christian Brauner <[email protected]> | 2025-04-25 10:11:45 +0000 |
| commit | e079d7c4db5cba1e8a315dc93030dfb6c7b49459 (patch) | |
| tree | dd9671426342cc89a3b90ce31bbb584b8796dad4 /drivers/gpu/drm/amd/amdgpu/amdgpu_object.c | |
| parent | fix a couple of races in MNT_TREE_BENEATH handling by do_move_mount() (diff) | |
| download | kernel-e079d7c4db5cba1e8a315dc93030dfb6c7b49459.tar.gz kernel-e079d7c4db5cba1e8a315dc93030dfb6c7b49459.zip | |
devtmpfs: don't use vfs_getattr_nosec to query i_mode
The recent move of the bdev_statx call to the low-level vfs_getattr_nosec
helper caused it being used by devtmpfs, which leads to deadlocks in
md teardown due to the block device lookup and put interfering with the
unusual lifetime rules in md.
But as handle_remove only works on inodes created and owned by devtmpfs
itself there is no need to use vfs_getattr_nosec vs simply reading the
mode from the inode directly. Switch to that to avoid the bdev lookup
or any other unintentional side effect.
Reported-by: Shin'ichiro Kawasaki <[email protected]>
Reported-by: Xiao Ni <[email protected]>
Fixes: 777d0961ff95 ("fs: move the bdex_statx call to vfs_getattr_nosec")
Signed-off-by: Christoph Hellwig <[email protected]>
Link: https://lore.kernel.org/[email protected]
Tested-by: Shin'ichiro Kawasaki <[email protected]>
Tested-by: Xiao Ni <[email protected]>
Tested-by: Ayush Jain <[email protected]>
Tested-by: Heiko Carstens <[email protected]>
Reviewed-by: Christian Brauner <[email protected]>
Signed-off-by: Christian Brauner <[email protected]>
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_object.c')
0 files changed, 0 insertions, 0 deletions