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775c5033a0
linux/fs/fuse
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Amir Goldstein 775c5033a0 fuse: fix live lock in fuse_iget() 
Commit 5d069dbe8a ("fuse: fix bad inode") replaced make_bad_inode()
in fuse_iget() with a private implementation fuse_make_bad().

The private implementation fails to remove the bad inode from inode
cache, so the retry loop with iget5_locked() finds the same bad inode
and marks it bad forever.

kmsg snip:

[ ] rcu: INFO: rcu_sched self-detected stall on CPU
...
[ ]  ? bit_wait_io+0x50/0x50
[ ]  ? fuse_init_file_inode+0x70/0x70
[ ]  ? find_inode.isra.32+0x60/0xb0
[ ]  ? fuse_init_file_inode+0x70/0x70
[ ]  ilookup5_nowait+0x65/0x90
[ ]  ? fuse_init_file_inode+0x70/0x70
[ ]  ilookup5.part.36+0x2e/0x80
[ ]  ? fuse_init_file_inode+0x70/0x70
[ ]  ? fuse_inode_eq+0x20/0x20
[ ]  iget5_locked+0x21/0x80
[ ]  ? fuse_inode_eq+0x20/0x20
[ ]  fuse_iget+0x96/0x1b0

Fixes: 5d069dbe8a ("fuse: fix bad inode")
Cc: stable@vger.kernel.org # 5.10+
Signed-off-by: Amir Goldstein <amir73il@gmail.com>
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
2021-03-04 13:36:46 +01:00
..
acl.c fs: make helpers idmap mount aware 2021-01-24 14:27:20 +01:00
control.c fuse: split fuse_mount off of fuse_conn 2020-09-18 15:17:41 +02:00
cuse.c fuse: split fuse_mount off of fuse_conn 2020-09-18 15:17:41 +02:00
dax.c fuse: split fuse_mount off of fuse_conn 2020-09-18 15:17:41 +02:00
dev.c mm/filemap: remove unused parameter and change to void type for replace_page_cache_page() 2021-02-24 13:38:27 -08:00
dir.c fs: make helpers idmap mount aware 2021-01-24 14:27:20 +01:00
file.c fuse: fix bad inode 2020-12-10 15:33:14 +01:00
fuse_i.h fuse: fix live lock in fuse_iget() 2021-03-04 13:36:46 +01:00
inode.c fuse: fix bad inode 2020-12-10 15:33:14 +01:00
Kconfig virtiofs: implement dax read/write operations 2020-09-10 11:39:23 +02:00
Makefile virtiofs: add a mount option to enable dax 2020-09-10 11:39:22 +02:00
readdir.c fuse: fix bad inode 2020-12-10 15:33:14 +01:00
virtio_fs.c virtiofs: clean up error handling in virtio_fs_get_tree() 2020-11-11 17:22:32 +01:00
xattr.c acl: handle idmapped mounts 2021-01-24 14:27:17 +01:00