Bug 2320199 (CVE-2024-47735)

Summary: CVE-2024-47735 kernel: RDMA/hns: Fix spin_unlock_irqrestore() called with IRQs enabled
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedCC: dfreiber, drow, jburrell, vkumar
Target Milestone: ---Keywords: Security
Target Release: ---   
Hardware: All   
OS: Linux   
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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Bug Depends On: 2320324    
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Description OSIDB Bzimport 2024-10-21 13:01:41 UTC 
In the Linux kernel, the following vulnerability has been resolved:

RDMA/hns: Fix spin_unlock_irqrestore() called with IRQs enabled

Fix missuse of spin_lock_irq()/spin_unlock_irq() when
spin_lock_irqsave()/spin_lock_irqrestore() was hold.

This was discovered through the lock debugging, and the corresponding
log is as follows:

raw_local_irq_restore() called with IRQs enabled
WARNING: CPU: 96 PID: 2074 at kernel/locking/irqflag-debug.c:10 warn_bogus_irq_restore+0x30/0x40
...
Call trace:
 warn_bogus_irq_restore+0x30/0x40
 _raw_spin_unlock_irqrestore+0x84/0xc8
 add_qp_to_list+0x11c/0x148 [hns_roce_hw_v2]
 hns_roce_create_qp_common.constprop.0+0x240/0x780 [hns_roce_hw_v2]
 hns_roce_create_qp+0x98/0x160 [hns_roce_hw_v2]
 create_qp+0x138/0x258
 ib_create_qp_kernel+0x50/0xe8
 create_mad_qp+0xa8/0x128
 ib_mad_port_open+0x218/0x448
 ib_mad_init_device+0x70/0x1f8
 add_client_context+0xfc/0x220
 enable_device_and_get+0xd0/0x140
 ib_register_device.part.0+0xf4/0x1c8
 ib_register_device+0x34/0x50
 hns_roce_register_device+0x174/0x3d0 [hns_roce_hw_v2]
 hns_roce_init+0xfc/0x2c0 [hns_roce_hw_v2]
 __hns_roce_hw_v2_init_instance+0x7c/0x1d0 [hns_roce_hw_v2]
 hns_roce_hw_v2_init_instance+0x9c/0x180 [hns_roce_hw_v2]
Comment 1 Robb Gatica 2024-10-21 14:23:32 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2024102107-CVE-2024-47735-5d51@gregkh/T