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Message-Id: <168920282162.4587.10421020284292608288.git-patchwork-notify@kernel.org>
Date: Wed, 12 Jul 2023 23:00:21 +0000
From: patchwork-bot+netdevbpf@...nel.org
To: Krister Johansen <kjlx@...pleofstupid.com>
Cc: netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
shayagr@...zon.com, akiyano@...zon.com, darinzon@...zon.com,
ndagan@...zon.com, saeedb@...zon.com, davem@...emloft.net,
edumazet@...gle.com, kuba@...nel.org, pabeni@...hat.com
Subject: Re: [PATCH net] net: ena: fix shift-out-of-bounds in exponential backoff
Hello:
This patch was applied to netdev/net.git (main)
by Jakub Kicinski <kuba@...nel.org>:
On Mon, 10 Jul 2023 18:36:21 -0700 you wrote:
> The ENA adapters on our instances occasionally reset. Once recently
> logged a UBSAN failure to console in the process:
>
> UBSAN: shift-out-of-bounds in build/linux/drivers/net/ethernet/amazon/ena/ena_com.c:540:13
> shift exponent 32 is too large for 32-bit type 'unsigned int'
> CPU: 28 PID: 70012 Comm: kworker/u72:2 Kdump: loaded not tainted 5.15.117
> Hardware name: Amazon EC2 c5d.9xlarge/, BIOS 1.0 10/16/2017
> Workqueue: ena ena_fw_reset_device [ena]
> Call Trace:
> <TASK>
> dump_stack_lvl+0x4a/0x63
> dump_stack+0x10/0x16
> ubsan_epilogue+0x9/0x36
> __ubsan_handle_shift_out_of_bounds.cold+0x61/0x10e
> ? __const_udelay+0x43/0x50
> ena_delay_exponential_backoff_us.cold+0x16/0x1e [ena]
> wait_for_reset_state+0x54/0xa0 [ena]
> ena_com_dev_reset+0xc8/0x110 [ena]
> ena_down+0x3fe/0x480 [ena]
> ena_destroy_device+0xeb/0xf0 [ena]
> ena_fw_reset_device+0x30/0x50 [ena]
> process_one_work+0x22b/0x3d0
> worker_thread+0x4d/0x3f0
> ? process_one_work+0x3d0/0x3d0
> kthread+0x12a/0x150
> ? set_kthread_struct+0x50/0x50
> ret_from_fork+0x22/0x30
> </TASK>
>
> [...]
Here is the summary with links:
- [net] net: ena: fix shift-out-of-bounds in exponential backoff
https://git.kernel.org/netdev/net/c/1e9cb763e9ba
You are awesome, thank you!
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