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| author | Thomas Zimmermann <tzimmermann@suse.de> | 2024-09-30 10:50:54 +0200 |
|---|---|---|
| committer | Thomas Zimmermann <tzimmermann@suse.de> | 2024-09-30 10:50:54 +0200 |
| commit | 2dd0ef5d951e9b565ddb324fe26c531b6a40bf82 (patch) | |
| tree | b24f5029eaa4cea229163c14549f571499c36fde /kernel/padata.c | |
| parent | 15499749fbb864cc0737bc8ecaf0e28a6b6d62dd (diff) | |
| parent | 9852d85ec9d492ebef56dc5f229416c925758edc (diff) | |
Merge drm/drm-next into drm-misc-next
Get drm-misc-next to up v6.12-rc1.
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Diffstat (limited to 'kernel/padata.c')
| -rw-r--r-- | kernel/padata.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/kernel/padata.c b/kernel/padata.c index 0fa6c2895460..d899f34558af 100644 --- a/kernel/padata.c +++ b/kernel/padata.c @@ -404,7 +404,8 @@ void padata_do_serial(struct padata_priv *padata) /* Sort in ascending order of sequence number. */ list_for_each_prev(pos, &reorder->list) { cur = list_entry(pos, struct padata_priv, list); - if (cur->seq_nr < padata->seq_nr) + /* Compare by difference to consider integer wrap around */ + if ((signed int)(cur->seq_nr - padata->seq_nr) < 0) break; } list_add(&padata->list, pos); @@ -512,9 +513,12 @@ void __init padata_do_multithreaded(struct padata_mt_job *job) * thread function. Load balance large jobs between threads by * increasing the number of chunks, guarantee at least the minimum * chunk size from the caller, and honor the caller's alignment. + * Ensure chunk_size is at least 1 to prevent divide-by-0 + * panic in padata_mt_helper(). */ ps.chunk_size = job->size / (ps.nworks * load_balance_factor); ps.chunk_size = max(ps.chunk_size, job->min_chunk); + ps.chunk_size = max(ps.chunk_size, 1ul); ps.chunk_size = roundup(ps.chunk_size, job->align); /* |