From: Tetsuo Handa Date: Mon, 11 Aug 2025 06:50:28 +0000 (+0900) Subject: vfs: show filesystem name at dump_inode() X-Git-Tag: v6.18-rc1~242^2~27 X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=ecb0605364465c051ff4744f3a848ef084b44769;p=thirdparty%2Fkernel%2Fstable.git vfs: show filesystem name at dump_inode() Commit 8b17e540969a ("vfs: add initial support for CONFIG_DEBUG_VFS") added dump_inode(), but dump_inode() currently reports only raw pointer address. Comment says that adding a proper inode dumping routine is a TODO. However, syzkaller concurrently tests multiple filesystems, and several filesystems started calling dump_inode() due to hitting VFS_BUG_ON_INODE() added by commit af153bb63a33 ("vfs: catch invalid modes in may_open()") before a proper inode dumping routine is implemented. Show filesystem name at dump_inode() so that we can find which filesystem has passed an invalid mode to may_open() from syzkaller's crash reports. Link: https://syzkaller.appspot.com/bug?extid=895c23f6917da440ed0d Signed-off-by: Tetsuo Handa Link: https://lore.kernel.org/ceaf4021-65cc-422e-9d0e-6afa18dd8276@I-love.SAKURA.ne.jp Signed-off-by: Christian Brauner --- diff --git a/fs/inode.c b/fs/inode.c index 3cbb78412a3ec..cc0f717a140d3 100644 --- a/fs/inode.c +++ b/fs/inode.c @@ -2913,7 +2913,7 @@ EXPORT_SYMBOL(mode_strip_sgid); */ void dump_inode(struct inode *inode, const char *reason) { - pr_warn("%s encountered for inode %px", reason, inode); + pr_warn("%s encountered for inode %px (%s)\n", reason, inode, inode->i_sb->s_type->name); } EXPORT_SYMBOL(dump_inode);