UBI: fastmap: Pass to_be_tortured when reusing old fastmap PEBs

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In ubi_update_fastmap(), when no fresh PEB is available to replace an
old fastmap PEB, the old PEB is reused by erasing it synchronously
via ubi_sync_erase() with the torture flag hardcoded to zero.

However, old_fm->to_be_tortured[] may be non-zero: it is set during
fastmap scanning when ubi_io_read_data()/ubi_io_read_ec_hdr() reports
UBI_IO_BITFLIPS, meaning the PEB showed signs of bit decay and should
be tortured to verify it is still reliable.

When the old PEB is instead returned to the WL sub-system via
ubi_wl_put_fm_peb(), the to_be_tortured flag is honored. The
synchronous reuse path is inconsistent: it silently skips the torture
test for PEBs that exhibited bit-flips.

Fix it by passing &old_fm->to_be_tortured[i] to ubi_sync_erase().

Fixes: dbb7d2a88d ("UBI: Add fastmap core")
Signed-off-by: Zhihao Cheng <chengzhihao1@huawei.com>
Signed-off-by: Richard Weinberger <richard@nod.at>

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Zhihao Cheng 2026-07-04 16:30:41 +08:00 • committed by Richard Weinberger

parent 420477a84f

commit be04fce994

1 changed files with 5 additions and 3 deletions

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8

drivers/mtd/ubi/fastmap.c

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