diff options
| author | Khazhismel Kumykov | 2023-10-20 15:36:17 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman | 2023-11-02 09:35:29 +0100 |
| commit | 6a5b845b57b122534d051129bc4fc85eac7f4a68 (patch) | |
| tree | 00714207b65c4a181245efaa61960881c2d02c0c /include | |
| parent | bb20a245df9c42fc93fc9d16ad7e9855a428cb57 (diff) | |
blk-throttle: check for overflow in calculate_bytes_allowed
commit 2dd710d476f2f1f6eaca884f625f69ef4389ed40 upstream.
Inexact, we may reject some not-overflowing values incorrectly, but
they'll be on the order of exabytes allowed anyways.
This fixes divide error crash on x86 if bps_limit is not configured or
is set too high in the rare case that jiffy_elapsed is greater than HZ.
Fixes: e8368b57c006 ("blk-throttle: use calculate_io/bytes_allowed() for throtl_trim_slice()")
Fixes: 8d6bbaada2e0 ("blk-throttle: prevent overflow while calculating wait time")
Signed-off-by: Khazhismel Kumykov <khazhy@google.com>
Acked-by: Tejun Heo <tj@kernel.org>
Link: https://lore.kernel.org/r/20231020223617.2739774-1-khazhy@google.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'include')
0 files changed, 0 insertions, 0 deletions