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| author | Yangxi Xiang <[email protected]> | 2022-06-27 12:04:09 +0000 |
|---|---|---|
| committer | Greg Kroah-Hartman <[email protected]> | 2022-06-27 14:41:13 +0000 |
| commit | 31c779f293b343577690c01369a5019ca6ec5de9 (patch) | |
| tree | 8943dfbf2c100f2237e9915dd7baef0e4e88b8c4 /drivers/base/devtmpfs.c | |
| parent | Revert "devcoredump: remove the useless gfp_t parameter in dev_coredumpv and ... (diff) | |
| download | kernel-31c779f293b343577690c01369a5019ca6ec5de9.tar.gz kernel-31c779f293b343577690c01369a5019ca6ec5de9.zip | |
devtmpfs: fix the dangling pointer of global devtmpfsd thread
When the devtmpfs fails to mount, a dangling pointer still remains in
global. Specifically, the err variable is passed by a pointer to the
devtmpfsd. When the devtmpfsd exits, it sets the error and completes the
setup_done. In this situation, the thread pointer is not set to null.
After the devtmpfsd exited, the devtmpfs can wakes up the destroyed
devtmpfsd thread by wake_up_process if a device change event comes.
Signed-off-by: Yangxi Xiang <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Greg Kroah-Hartman <[email protected]>
Diffstat (limited to 'drivers/base/devtmpfs.c')
| -rw-r--r-- | drivers/base/devtmpfs.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/base/devtmpfs.c b/drivers/base/devtmpfs.c index 8a3ddbae3b70..e4bffeabf344 100644 --- a/drivers/base/devtmpfs.c +++ b/drivers/base/devtmpfs.c @@ -482,6 +482,7 @@ int __init devtmpfs_init(void) if (err) { printk(KERN_ERR "devtmpfs: unable to create devtmpfs %i\n", err); unregister_filesystem(&dev_fs_type); + thread = NULL; return err; } |