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authorMiklos Szeredi <mszeredi@redhat.com>2021-08-17 21:05:16 +0200
committerMiklos Szeredi <mszeredi@redhat.com>2021-08-17 21:05:16 +0200
commit76224355db7570cbe6b6f75c8929a1558828dd55 (patch)
tree5fe1da76e6516a442bfb45907eb4e5dbbf43d03f /tools
parent5d5b74aa9c766f0dd37d5cc1a2a7a94586130501 (diff)
downloadlinux-76224355db7570cbe6b6f75c8929a1558828dd55.tar.bz2
fuse: truncate pagecache on atomic_o_trunc
fuse_finish_open() will be called with FUSE_NOWRITE in case of atomic O_TRUNC. This can deadlock with fuse_wait_on_page_writeback() in fuse_launder_page() triggered by invalidate_inode_pages2(). Fix by replacing invalidate_inode_pages2() in fuse_finish_open() with a truncate_pagecache() call. This makes sense regardless of FOPEN_KEEP_CACHE or fc->writeback cache, so do it unconditionally. Reported-by: Xie Yongji <xieyongji@bytedance.com> Reported-and-tested-by: syzbot+bea44a5189836d956894@syzkaller.appspotmail.com Fixes: e4648309b85a ("fuse: truncate pending writes on O_TRUNC") Cc: <stable@vger.kernel.org> Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
Diffstat (limited to 'tools')
0 files changed, 0 insertions, 0 deletions