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authorAl Viro <viro@zeniv.linux.org.uk>2022-08-14 22:16:18 +0300
committerAl Viro <viro@zeniv.linux.org.uk>2022-08-14 22:16:18 +0300
commit3f61631d47f115b83c935d0039f95cb68b0c8ab7 (patch)
tree9e32fe16349d823d8b58deea5d614a9675821c57 /fs/proc
parent5d6a0f4da9275f6c212de33777778673ba91241a (diff)
downloadlinux-3f61631d47f115b83c935d0039f95cb68b0c8ab7.tar.xz
take care to handle NULL ->proc_lseek()
Easily done now, just by clearing FMODE_LSEEK in ->f_mode during proc_reg_open() for such entries. Fixes: 868941b14441 "fs: remove no_llseek" Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'fs/proc')
-rw-r--r--fs/proc/inode.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/fs/proc/inode.c b/fs/proc/inode.c
index f130499ad843..f495fdb39151 100644
--- a/fs/proc/inode.c
+++ b/fs/proc/inode.c
@@ -494,6 +494,9 @@ static int proc_reg_open(struct inode *inode, struct file *file)
typeof_member(struct proc_ops, proc_release) release;
struct pde_opener *pdeo;
+ if (!pde->proc_ops->proc_lseek)
+ file->f_mode &= ~FMODE_LSEEK;
+
if (pde_is_permanent(pde)) {
open = pde->proc_ops->proc_open;
if (open)