From: chuguangqing <chuguangqing@inspur.com>
Date: Wed, 6 Aug 2025 02:28:49 +0000 (+0800)
Subject: fs: ext4: change GFP_KERNEL to GFP_NOFS to avoid deadlock
X-Git-Tag: v6.12.58~138
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=238f7a7356c33a9797a6297c6fdfd87f113b2325;p=thirdparty%2Fkernel%2Fstable.git

fs: ext4: change GFP_KERNEL to GFP_NOFS to avoid deadlock

[ Upstream commit 1534f72dc2a11ded38b0e0268fbcc0ca24e9fd4a ]

The parent function ext4_xattr_inode_lookup_create already uses GFP_NOFS for memory alloction, so the function ext4_xattr_inode_cache_find should use same gfp_flag.

Signed-off-by: chuguangqing <chuguangqing@inspur.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---

diff --git a/fs/ext4/xattr.c b/fs/ext4/xattr.c
index 5ddfa4801bb30..ce986312bf685 100644
--- a/fs/ext4/xattr.c
+++ b/fs/ext4/xattr.c
@@ -1552,7 +1552,7 @@ ext4_xattr_inode_cache_find(struct inode *inode, const void *value,
 	WARN_ON_ONCE(ext4_handle_valid(journal_current_handle()) &&
 		     !(current->flags & PF_MEMALLOC_NOFS));
 
-	ea_data = kvmalloc(value_len, GFP_KERNEL);
+	ea_data = kvmalloc(value_len, GFP_NOFS);
 	if (!ea_data) {
 		mb_cache_entry_put(ea_inode_cache, ce);
 		return NULL;