linux

mirror of https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git synced 2026-07-16 17:57:38 -04:00

Files

Farhad Alemi 704d48d81d freevxfs: don't BUG() on unknown typed-extent type

vxfs_bmap_typed() handles four typed-extent types and calls BUG() in
its default case, so an on-disk typed extent with any other type value
crashes the kernel. It is reachable from ioctl(FIBMAP) on a regular
file:

  kernel BUG at fs/freevxfs/vxfs_bmap.c:230!
  RIP: vxfs_bmap_typed fs/freevxfs/vxfs_bmap.c:230 [inline]
       vxfs_bmap1+0x128a/0x12d0 fs/freevxfs/vxfs_bmap.c:257

Replace the BUG() with WARN_ON_ONCE() and return 0 -- the value
vxfs_bmap_typed() already returns on failure (and from the DEV4 case
above); vxfs_getblk() maps 0 to -EIO, so the ioctl fails cleanly.

Reported-by: Farhad Alemi <farhad.alemi@berkeley.edu>
Signed-off-by: Farhad Alemi <farhad.alemi@berkeley.edu>
Link: https://patch.msgid.link/CA+0ovChveuAwv=t15dr2m09E32bM48hHJxvfeEYZOhdNiEc9Tw@mail.gmail.com
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Christian Brauner (Amutable) <brauner@kernel.org>

2026-07-01 15:26:26 +02:00

Kconfig

fs: add CONFIG_BUFFER_HEAD

2023-08-02 09:13:09 -06:00

Makefile

treewide: Add SPDX license identifier - Makefile/Kconfig

2019-05-21 10:50:46 +02:00

vxfs_bmap.c

freevxfs: don't BUG() on unknown typed-extent type

2026-07-01 15:26:26 +02:00

vxfs_dir.h

freevxfs: Replace one-element array with flexible array member