diff options
| author | Christophe Leroy <christophe.leroy@csgroup.eu> | 2025-01-13 09:37:24 +0100 |
|---|---|---|
| committer | Christian Brauner <brauner@kernel.org> | 2025-01-13 16:24:16 +0100 |
| commit | 344af27715ddbf357cf76978d674428b88f8e92d (patch) | |
| tree | 7582aec7a645282c44c01bbb44e05cccbd0d5720 /fs/select.c | |
| parent | 5cf8f938bf5ca441a02a3bbf6ef772963aa387b3 (diff) | |
select: Fix unbalanced user_access_end()
While working on implementing user access validation on powerpc
I got the following warnings on a pmac32_defconfig build:
CC fs/select.o
fs/select.o: warning: objtool: sys_pselect6+0x1bc: redundant UACCESS disable
fs/select.o: warning: objtool: sys_pselect6_time32+0x1bc: redundant UACCESS disable
On powerpc/32s, user_read_access_begin/end() are no-ops, but the
failure path has a user_access_end() instead of user_read_access_end()
which means an access end without any prior access begin.
Replace that user_access_end() by user_read_access_end().
Fixes: 7e71609f64ec ("pselect6() and friends: take handling the combined 6th/7th args into helper")
Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Link: https://lore.kernel.org/r/a7139e28d767a13e667ee3c79599a8047222ef36.1736751221.git.christophe.leroy@csgroup.eu
Signed-off-by: Christian Brauner <brauner@kernel.org>
Diffstat (limited to 'fs/select.c')
| -rw-r--r-- | fs/select.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/fs/select.c b/fs/select.c index e223d1fe9d55..7da531b1cf6b 100644 --- a/fs/select.c +++ b/fs/select.c @@ -786,7 +786,7 @@ static inline int get_sigset_argpack(struct sigset_argpack *to, } return 0; Efault: - user_access_end(); + user_read_access_end(); return -EFAULT; } @@ -1355,7 +1355,7 @@ static inline int get_compat_sigset_argpack(struct compat_sigset_argpack *to, } return 0; Efault: - user_access_end(); + user_read_access_end(); return -EFAULT; } |