cifsd: fix reference count decrement of unclaimed file in __ksmbd_lookup_fd

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__ksmbd_lookup_fd could decrement the reference count of
unclaimed ksmbd_file to 0 but not release this ksmbd_file.

ksmbd_file cannot be unclaimed except ksmbd_close_inode_fds(),
because ksmbd_file is only removed from the m_fp_list list
after the reference count of ksmbd_file becomes 0. And if the
count is 0, __ksmbd_lookup_fd does not use ksmbd_file found
from idr due to atomic_inc_not_zero.

Signed-off-by: Hyunchul Lee <hyc.lee@gmail.com>
Signed-off-by: Namjae Jeon <namjae.jeon@samsung.com>
Signed-off-by: Steve French <stfrench@microsoft.com>

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Hyunchul Lee 2021-04-13 13:24:43 +09:00 • committed by Steve French

parent 3c20378325

commit 24b626967d

2 changed files with 0 additions and 58 deletions

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5

fs/cifsd/smb2pdu.c

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53

fs/cifsd/vfs_cache.c

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