From: Xin Long
Date: Fri, 21 Aug 2020 14:59:38 +0800
> With disabling bh in the whole sctp_get_port_local(), when
> snum == 0 and too many ports have been used, the do-while
> loop will take the cpu for a long time and cause cpu stuck:
>
> [ ] watchdog: BUG: soft lockup - CPU#11 stuck for 22s!
On Fri, Aug 21, 2020 at 02:59:38PM +0800, Xin Long wrote:
> With disabling bh in the whole sctp_get_port_local(), when
> snum == 0 and too many ports have been used, the do-while
> loop will take the cpu for a long time and cause cpu stuck:
>
> [ ] watchdog: BUG: soft lockup - CPU#11 stuck for 2
With disabling bh in the whole sctp_get_port_local(), when
snum == 0 and too many ports have been used, the do-while
loop will take the cpu for a long time and cause cpu stuck:
[ ] watchdog: BUG: soft lockup - CPU#11 stuck for 22s!
[ ] RIP: 0010:native_queued_spin_lock_slowpath+0x4de/0x940
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