CVE-2023-54000

published 2025-12-24

CVE-2023-54000: In the Linux kernel, the following vulnerability has been resolved: net: hns3: fix deadlock issue when externel_lb and reset are executed together When…

Priority P4 21

In the Linux kernel, the following vulnerability has been resolved:

net: hns3: fix deadlock issue when externel_lb and reset are executed together

When externel_lb and reset are executed together, a deadlock may
occur:
[ 3147.217009] INFO: task kworker/u321:0:7 blocked for more than 120 seconds.
[ 3147.230483] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 3147.238999] task:kworker/u321:0 state:D stack: 0 pid: 7 ppid: 2 flags:0x00000008
[ 3147.248045] Workqueue: hclge hclge_service_task [hclge]
[ 3147.253957] Call trace:
[ 3147.257093] __switch_to+0x7c/0xbc
[ 3147.261183] __schedule+0x338/0x6f0
[ 3147.265357] schedule+0x50/0xe0
[ 3147.269185] schedule_preempt_disabled+0x18/0x24
[ 3147.274488] __mutex_lock.constprop.0+0x1d4/0x5dc
[ 3147.279880] __mutex_lock_slowpath+0x1c/0x30
[ 3147.284839] mutex_lock+0x50/0x60
[ 3147.288841] rtnl_lock+0x20/0x2c
[ 3147.292759] hclge_reset_prepare+0x68/0x90 [hclge]
[ 3147.298239] hclge_reset_subtask+0x88/0xe0 [hclge]
[ 3147.303718] hclge_reset_service_task+0x84/0x120 [hclge]
[ 3147.309718] hclge_service_task+0x2c/0x70 [hclge]
[ 3147.315109] process_one_work+0x1d0/0x490
[ 3147.319805] worker_thread+0x158/0x3d0
[ 3147.324240] kthread+0x108/0x13c
[ 3147.328154] ret_from_fork+0x10/0x18

In externel_lb process, the hns3 driver call napi_disable()
first, then the reset happen, then the restore process of the
externel_lb will fail, and will not call napi_enable(). When
doing externel_lb again, napi_disable() will be double call,
cause a deadlock of rtnl_lock().

This patch use the HNS3_NIC_STATE_DOWN state to protect the
calling of napi_disable() and napi_enable() in externel_lb
process, just as the usage in ndo_stop() and ndo_start().

Affected

11 ranges

Vendor	Product	Version range	Fixed in
debian	linux	< linux 6.1.52-1 (bookworm)	linux 6.1.52-1 (bookworm)
linux	linux	—	—
linux	linux	>= 04b6ba143521f4485b7f2c36c655b262a79dae97 < 743f7c1762e098048ede8cdf8c89a118f8d12391	743f7c1762e098048ede8cdf8c89a118f8d12391
linux	linux	>= 04b6ba143521f4485b7f2c36c655b262a79dae97 < ef2d6bf9695669d31ece9f2ef39dec84874a87c7	ef2d6bf9695669d31ece9f2ef39dec84874a87c7
linux	linux	>= 04b6ba143521f4485b7f2c36c655b262a79dae97 < ac6257a3ae5db5193b1f19c268e4f72d274ddb88	ac6257a3ae5db5193b1f19c268e4f72d274ddb88
linux	linux	>= 85fc1d802edf36123ae1bd0a13892bb3772c197f < d9f609cb50ebab4aa6341112f406bf9d3928ac81	d9f609cb50ebab4aa6341112f406bf9d3928ac81
linux	linux_kernel	>= 0 < 6.1.52-1	6.1.52-1
linux	linux_kernel	>= 0 < 6.4.11-1	6.4.11-1
linux	linux_kernel	>= 0 < 6.4.11-1	6.4.11-1
linux	linux_kernel	>= 6.1.0 < 6.1.46	6.1.46
linux	linux_kernel	>= 6.2.0 < 6.4.11	6.4.11

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