Hello:
This patch was applied to netdev/net.git (master)
by David S. Miller <davem@xxxxxxxxxxxxx>:
On Sat, 22 Jan 2022 17:43:09 +0800 you wrote:
> We encountered a crash in smc_setsockopt() and it is caused by
> accessing smc->clcsock after clcsock was released.
>
> BUG: kernel NULL pointer dereference, address: 0000000000000020
> #PF: supervisor read access in kernel mode
> #PF: error_code(0x0000) - not-present page
> PGD 0 P4D 0
> Oops: 0000 [#1] PREEMPT SMP PTI
> CPU: 1 PID: 50309 Comm: nginx Kdump: loaded Tainted: G E 5.16.0-rc4+ #53
> RIP: 0010:smc_setsockopt+0x59/0x280 [smc]
> Call Trace:
> <TASK>
> __sys_setsockopt+0xfc/0x190
> __x64_sys_setsockopt+0x20/0x30
> do_syscall_64+0x34/0x90
> entry_SYSCALL_64_after_hwframe+0x44/0xae
> RIP: 0033:0x7f16ba83918e
> </TASK>
>
> [...]
Here is the summary with links:
- [net,v2] net/smc: Transitional solution for clcsock race issue
https://git.kernel.org/netdev/net/c/c0bf3d8a943b
You are awesome, thank you!
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