https://github.com/torvalds/linux
The newly added integrity_recheck() function has another larger stack allocation, just like its caller integrity_metadata(). When it gets inlined, the combination of the two exceeds the warning limit for 32-bit architectures and possibly risks an overflow when this is called from a deep call chain through a file system: drivers/md/dm-integrity.c:1767:13: error: stack frame size (1048) exceeds limit (1024) in 'integrity_metadata' [-Werror,-Wframe-larger-than] 1767 | static void integrity_metadata(struct work_struct *w) Since the caller at this point is done using its checksum buffer, just reuse the same buffer in the new function to avoid the double allocation. [Mikulas: add "noinline" to integrity_recheck and verity_recheck. These functions are only called on error, so they shouldn't bloat the stack frame or code size of the caller.] Fixes: c88f5e553fe3 ("dm-integrity: recheck the integrity tag after a failure") Fixes: 9177f3c0dea6 ("dm-verity: recheck the hash after a failure") Cc: stable@vger.kernel.org Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Mikulas Patocka <mpatocka@redhat.com> Signed-off-by: Mike Snitzer <snitzer@kernel.org>
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- v2.6.19-rc2
- v2.6.19-rc1
- v2.6.19
- v2.6.18-rc7
- v2.6.18-rc6
- v2.6.18-rc5
- v2.6.18-rc4
- v2.6.18-rc3
- v2.6.18-rc2
- v2.6.18-rc1
- v2.6.18
- v2.6.17-rc6
- v2.6.17-rc5
- v2.6.17-rc4
- v2.6.17-rc3
- v2.6.17-rc2
- v2.6.17-rc1
- v2.6.17
- v2.6.16-rc6
- v2.6.16-rc5
- v2.6.16-rc4
- v2.6.16-rc3
- v2.6.16-rc2
- v2.6.16-rc1
- v2.6.16
- v2.6.15-rc7
- v2.6.15-rc6
- v2.6.15-rc5
- v2.6.15-rc4
- v2.6.15-rc3
- v2.6.15-rc2
- v2.6.15-rc1
- v2.6.15
- v2.6.14-rc5
- v2.6.14-rc4
- v2.6.14-rc3
- v2.6.14-rc2
- v2.6.14-rc1
- v2.6.14
- v2.6.13-rc7
- v2.6.13-rc6
- v2.6.13-rc5
- v2.6.13-rc4
- v2.6.13-rc3
- v2.6.13-rc2
- v2.6.13-rc1
- v2.6.13
- v2.6.12-rc6
- v2.6.12-rc5
- v2.6.12-rc4
- v2.6.12-rc3
- v2.6.12-rc2
- v2.6.12
- v2.6.11-tree
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dm-integrity, dm-verity: reduce stack usage for recheck
edition = "2021"
newline_style = "Unix"
# Unstable options that help catching some mistakes in formatting and that we may want to enable
# when they become stable.
#
# They are kept here since they are useful to run from time to time.
#format_code_in_doc_comments = true
#reorder_impl_items = true
#comment_width = 100
#wrap_comments = true
#normalize_comments = true
Computing file changes ...