On Thu, 22 Aug 2024 08:41:36 -0700, Konstantin Ovsepian wrote:
> Recently running UBSAN caught few out of bound shifts in the
> ioc_forgive_debts() function:
>
> UBSAN: shift-out-of-bounds in block/blk-iocost.c:2142:38
> shift exponent 80 is too large for 64-bit type 'u64' (aka 'unsigned long
> long')
> ...
> UBSAN: shift-out-of-bounds in block/blk-iocost.c:2144:30
> shift exponent 80 is too large for 64-bit type 'u64' (aka 'unsigned long
> long')
> ...
> Call Trace:
> <IRQ>
> dump_stack_lvl+0xca/0x130
> __ubsan_handle_shift_out_of_bounds+0x22c/0x280
> ? __lock_acquire+0x6441/0x7c10
> ioc_timer_fn+0x6cec/0x7750
> ? blk_iocost_init+0x720/0x720
> ? call_timer_fn+0x5d/0x470
> call_timer_fn+0xfa/0x470
> ? blk_iocost_init+0x720/0x720
> __run_timer_base+0x519/0x700
> ...
>
> [...]
Applied, thanks!
[1/1] blk_iocost: fix more out of bound shifts
commit: 9bce8005ec0dcb23a58300e8522fe4a31da606fa
Best regards,
--
Jens Axboe
