[PATCH 0/9] tlsf: use 8-byte alignment for normal malloc allocations

Ahmad Fatoum a.fatoum at pengutronix.de
Tue Oct 4 08:53:58 PDT 2022

TLSF currently uses only 4-byte alignment on 32-bit platforms, which isn't
enough for ldrd/strd on ARMv7. This series reworks TLSF a bit, so we always
have at least 8 byte alignment.  dlmalloc already has 8 byte alignment
minimum, so nothing to do there.

While this fixes real issues like what Enrico ran into, I'd suggest we only
this be taken into next only after v2022.10.0 is tagged, so this can get
some more testing exposure in the mean time.

Ahmad Fatoum (9):
  test: include <linux/printk.h>
  tlsf: use bselftest for testing ffs/fls
  tlsf: ensure malloc pool is aligned
  tlsf: fix sizeof(size_t) == sizeof(void *) assumption
  tlsf: decouple maximum allocation size from sizeof(size_t)
  tlsf: use 8-byte alignment for normal malloc allocations
  common: malloc: ensure alignment is always at least 8 byte
  test: self: refactor to allow alignment check
  test: self: malloc: fix memory leaks

 common/Kconfig        |  5 +++
 common/dlmalloc.c     |  3 ++
 common/dummy_malloc.c |  2 +-
 common/tlsf.c         | 72 ++++++++++++++++-----------------
 include/bselftest.h   |  1 +
 test/self/malloc.c    | 92 ++++++++++++++++++++++++++++++++-----------
 6 files changed, 114 insertions(+), 61 deletions(-)


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