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author | Carlos Llamas <cmllamas@google.com> | 2024-10-24 21:36:26 +0300 |
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committer | Boqun Feng <boqun.feng@gmail.com> | 2024-12-15 22:49:35 +0300 |
commit | e638072e61726cae363d48812815197a2a0e097f (patch) | |
tree | 6da9f1bcb308246e0fa8de20b57d17f41b03c1a7 /rust/helpers/mutex.c | |
parent | 0d3547df6934b8f9600630322799a2a76b4567d8 (diff) | |
download | linux-e638072e61726cae363d48812815197a2a0e097f.tar.xz |
lockdep: Fix upper limit for LOCKDEP_*_BITS configs
Lockdep has a set of configs used to determine the size of the static
arrays that it uses. However, the upper limit that was initially setup
for these configs is too high (30 bit shift). This equates to several
GiB of static memory for individual symbols. Using such high values
leads to linker errors:
$ make defconfig
$ ./scripts/config -e PROVE_LOCKING --set-val LOCKDEP_BITS 30
$ make olddefconfig all
[...]
ld: kernel image bigger than KERNEL_IMAGE_SIZE
ld: section .bss VMA wraps around address space
Adjust the upper limits to the maximum values that avoid these issues.
The need for anything more, likely points to a problem elsewhere. Note
that LOCKDEP_CHAINS_BITS was intentionally left out as its upper limit
had a different symptom and has already been fixed [1].
Reported-by: J. R. Okajima <hooanon05g@gmail.com>
Closes: https://lore.kernel.org/all/30795.1620913191@jrobl/ [1]
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Boqun Feng <boqun.feng@gmail.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Waiman Long <longman@redhat.com>
Cc: Will Deacon <will@kernel.org>
Acked-by: Waiman Long <longman@redhat.com>
Signed-off-by: Carlos Llamas <cmllamas@google.com>
Signed-off-by: Boqun Feng <boqun.feng@gmail.com>
Link: https://lore.kernel.org/r/20241024183631.643450-2-cmllamas@google.com
Diffstat (limited to 'rust/helpers/mutex.c')
0 files changed, 0 insertions, 0 deletions