mirrors
/
linux-stable
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
1
0
Fork 0
Code Issues Releases Wiki Activity

This pull request contains the following bug fixes for UBI and UBIFS: 

- Fix for a stable patch: Fix failure attaching when vid_hdr offset equals to (sub)page size
 - Fix for a deadlock in UBI's worker thread
 -----BEGIN PGP SIGNATURE-----
 
 iQJKBAABCAA0FiEEdgfidid8lnn52cLTZvlZhesYu8EFAmQ66wwWHHJpY2hhcmRA
 c2lnbWEtc3Rhci5hdAAKCRBm+VmF6xi7wUEdD/4j9N9vWsufIixVezlFZM60XAFK
 JmJZ+407gPlbDsmrBAu7u99UF9I6CYEthyKPeVIDwoMis+bR1f189WGGgWz7ImT5
 my3Uuq1WCklzJRdYxjCznaHa6XPCu/RnXYvbqPBFvgIK4fu2Lkem01uhw+7gaw/S
 tU8rwGfTfM8pNhv3LnwyJ8uAZ41uRv1Yaa3irfTZYbapmnCZeQ+XrXPntdOXfOyg
 nR2EdLP7JcnXM7Xemd47gx1AxsJk6Lzl/RTeA7zO+1JWLcz5Lprk0o/5aokz5HUO
 JXUaejhcvrtnDlXAWKhw4FGddGsJRmH3iM536J9It1UZgX5/XNHfYq9MtXhWdhjj
 pDlyEszrYn8LJR3f+uL/jjtc8CjUD0vqGfgCh//6yL3K7OoPRzC6oAxYob5Zxp7D
 xZv+FzWcgXbtqyirQivcY8Z82VAVoIDRPRkjPHzaMg4+8+0gCJ/fvT5nxD/t0t12
 UR9+7VHJ376KCWvYbAXKopOTe93sfWBdezX4z7sOcGRE9UnP35zwB/2cSQgkAXtq
 wtV5fJBTKxFXzG5LvnZVFdQJxe1cAtMBl+ochcRsGIbLy9sTZ7rVggiiGLmeYGEX
 NOxbVuupQHlffVYQ+XTXSQ6C/PCU4NmLmQap/rD5N+PjSMKfiPhnuklt9IWoKfzH
 HW6gFDuAMVUu/aWQmg==
 =s5M1
 -----END PGP SIGNATURE-----

Merge tag 'ubifs-for-linus-6.3-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/rw/ubifs

Pull UBI fixes from Richard Weinberger:

 - Fix failure to attach when vid_hdr offset equals the (sub)page size

 - Fix for a deadlock in UBI's worker thread

* tag 'ubifs-for-linus-6.3-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/rw/ubifs:
  ubi: Fix failure attaching when vid_hdr offset equals to (sub)page size
  ubi: Fix deadlock caused by recursively holding work_sem
This commit is contained in:
Linus Torvalds 2023-04-15 16:55:09 -07:00
parent a7a55e27ad 1e020e1b96
commit bc88aa51a6
2 changed files with 17 additions and 8 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

21
drivers/mtd/ubi/build.c
View File

@ -666,12 +666,6 @@ static int io_init(struct ubi_device *ubi, int max_beb_per1024)
ubi->ec_hdr_alsize = ALIGN(UBI_EC_HDR_SIZE, ubi->hdrs_min_io_size);
ubi->vid_hdr_alsize = ALIGN(UBI_VID_HDR_SIZE, ubi->hdrs_min_io_size);
if (ubi->vid_hdr_offset && ((ubi->vid_hdr_offset + UBI_VID_HDR_SIZE) >
ubi->vid_hdr_alsize)) {
ubi_err(ubi, "VID header offset %d too large.", ubi->vid_hdr_offset);
return -EINVAL;
}
dbg_gen("min_io_size %d", ubi->min_io_size);
dbg_gen("max_write_size %d", ubi->max_write_size);
dbg_gen("hdrs_min_io_size %d", ubi->hdrs_min_io_size);
@ -689,6 +683,21 @@ static int io_init(struct ubi_device *ubi, int max_beb_per1024)
ubi->vid_hdr_aloffset;
}
/*
* Memory allocation for VID header is ubi->vid_hdr_alsize
* which is described in comments in io.c.
* Make sure VID header shift + UBI_VID_HDR_SIZE not exceeds
* ubi->vid_hdr_alsize, so that all vid header operations
* won't access memory out of bounds.
*/
if ((ubi->vid_hdr_shift + UBI_VID_HDR_SIZE) > ubi->vid_hdr_alsize) {
ubi_err(ubi, "Invalid VID header offset %d, VID header shift(%d)"
" + VID header size(%zu) > VID header aligned size(%d).",
ubi->vid_hdr_offset, ubi->vid_hdr_shift,
UBI_VID_HDR_SIZE, ubi->vid_hdr_alsize);
return -EINVAL;
}
/* Similar for the data offset */
ubi->leb_start = ubi->vid_hdr_offset + UBI_VID_HDR_SIZE;
ubi->leb_start = ALIGN(ubi->leb_start, ubi->min_io_size);

4
drivers/mtd/ubi/wl.c
View File

@ -575,7 +575,7 @@ static int erase_worker(struct ubi_device *ubi, struct ubi_work *wl_wrk,
* @vol_id: the volume ID that last used this PEB
* @lnum: the last used logical eraseblock number for the PEB
* @torture: if the physical eraseblock has to be tortured
* @nested: denotes whether the work_sem is already held in read mode
* @nested: denotes whether the work_sem is already held
*
* This function returns zero in case of success and a %-ENOMEM in case of
* failure.
@ -1131,7 +1131,7 @@ static int __erase_worker(struct ubi_device *ubi, struct ubi_work *wl_wrk)
int err1;
/* Re-schedule the LEB for erasure */
err1 = schedule_erase(ubi, e, vol_id, lnum, 0, false);
err1 = schedule_erase(ubi, e, vol_id, lnum, 0, true);
if (err1) {
spin_lock(&ubi->wl_lock);
wl_entry_destroy(ubi, e);