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SubjectRE: [PATCH] qed: fix possible unpaired spin_{un}lock_bh in _qed_mcp_cmd_and_union()
Date


> -----Original Message-----
> From: patchwork-bot+netdevbpf@kernel.org <patchwork-
> bot+netdevbpf@kernel.org>
> Sent: Friday, July 16, 2021 3:50 AM
> To: Justin He <Justin.He@arm.com>
> Cc: aelior@marvell.com; GR-everest-linux-l2@marvell.com;
> davem@davemloft.net; kuba@kernel.org; netdev@vger.kernel.org; linux-
> kernel@vger.kernel.org; nd <nd@arm.com>
> Subject: Re: [PATCH] qed: fix possible unpaired spin_{un}lock_bh in
> _qed_mcp_cmd_and_union()
>
> Hello:
>
> This patch was applied to netdev/net.git (refs/heads/master):
>
> On Thu, 15 Jul 2021 16:08:21 +0800 you wrote:
> > Liajian reported a bug_on hit on a ThunderX2 arm64 server with FastLinQ
> > QL41000 ethernet controller:
> > BUG: scheduling while atomic: kworker/0:4/531/0x00000200
> > [qed_probe:488()]hw prepare failed
> > kernel BUG at mm/vmalloc.c:2355!
> > Internal error: Oops - BUG: 0 [#1] SMP
> > CPU: 0 PID: 531 Comm: kworker/0:4 Tainted: G W 5.4.0-77-generic #86-
> Ubuntu
> > pstate: 00400009 (nzcv daif +PAN -UAO)
> > Call trace:
> > vunmap+0x4c/0x50
> > iounmap+0x48/0x58
> > qed_free_pci+0x60/0x80 [qed]
> > qed_probe+0x35c/0x688 [qed]
> > __qede_probe+0x88/0x5c8 [qede]
> > qede_probe+0x60/0xe0 [qede]
> > local_pci_probe+0x48/0xa0
> > work_for_cpu_fn+0x24/0x38
> > process_one_work+0x1d0/0x468
> > worker_thread+0x238/0x4e0
> > kthread+0xf0/0x118
> > ret_from_fork+0x10/0x18
> >
> > [...]
>
> Here is the summary with links:
> - qed: fix possible unpaired spin_{un}lock_bh in _qed_mcp_cmd_and_union()
> https://git.kernel.org/netdev/net/c/6206b7981a36
>
> You are awesome, thank you!

Thanks.
If possible, please also Cc: stable@kernel.org because the bug seemed to
be there for a long time.


--
Cheers,
Justin (Jia He)


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