CVE-2023-52743

In the Linux kernel, the following vulnerability has been resolved:<br /> <br /> ice: Do not use WQ_MEM_RECLAIM flag for workqueue<br /> <br /> When both ice and the irdma driver are loaded, a warning in<br /> check_flush_dependency is being triggered. This is due to ice driver<br /> workqueue being allocated with the WQ_MEM_RECLAIM flag and the irdma one<br /> is not.<br /> <br /> According to kernel documentation, this flag should be set if the<br /> workqueue will be involved in the kernel&amp;#39;s memory reclamation flow.<br /> Since it is not, there is no need for the ice driver&amp;#39;s WQ to have this<br /> flag set so remove it.<br /> <br /> Example trace:<br /> <br /> [ +0.000004] workqueue: WQ_MEM_RECLAIM ice:ice_service_task [ice] is flushing !WQ_MEM_RECLAIM infiniband:0x0<br /> [ +0.000139] WARNING: CPU: 0 PID: 728 at kernel/workqueue.c:2632 check_flush_dependency+0x178/0x1a0<br /> [ +0.000011] Modules linked in: bonding tls xt_CHECKSUM xt_MASQUERADE xt_conntrack ipt_REJECT nf_reject_ipv4 nft_compat nft_cha<br /> in_nat nf_nat nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 nf_tables nfnetlink bridge stp llc rfkill vfat fat intel_rapl_msr intel<br /> _rapl_common isst_if_common skx_edac nfit libnvdimm x86_pkg_temp_thermal intel_powerclamp coretemp kvm_intel kvm irqbypass crct1<br /> 0dif_pclmul crc32_pclmul ghash_clmulni_intel rapl intel_cstate rpcrdma sunrpc rdma_ucm ib_srpt ib_isert iscsi_target_mod target_<br /> core_mod ib_iser libiscsi scsi_transport_iscsi rdma_cm ib_cm iw_cm iTCO_wdt iTCO_vendor_support ipmi_ssif irdma mei_me ib_uverbs<br /> ib_core intel_uncore joydev pcspkr i2c_i801 acpi_ipmi mei lpc_ich i2c_smbus intel_pch_thermal ioatdma ipmi_si acpi_power_meter<br /> acpi_pad xfs libcrc32c sd_mod t10_pi crc64_rocksoft crc64 sg ahci ixgbe libahci ice i40e igb crc32c_intel mdio i2c_algo_bit liba<br /> ta dca wmi dm_mirror dm_region_hash dm_log dm_mod ipmi_devintf ipmi_msghandler fuse<br /> [ +0.000161] [last unloaded: bonding]<br /> [ +0.000006] CPU: 0 PID: 728 Comm: kworker/0:2 Tainted: G S 6.2.0-rc2_next-queue-13jan-00458-gc20aabd57164 #1<br /> [ +0.000006] Hardware name: Intel Corporation S2600WFT/S2600WFT, BIOS SE5C620.86B.02.01.0010.010620200716 01/06/2020<br /> [ +0.000003] Workqueue: ice ice_service_task [ice]<br /> [ +0.000127] RIP: 0010:check_flush_dependency+0x178/0x1a0<br /> [ +0.000005] Code: 89 8e 02 01 e8 49 3d 40 00 49 8b 55 18 48 8d 8d d0 00 00 00 48 8d b3 d0 00 00 00 4d 89 e0 48 c7 c7 e0 3b 08<br /> 9f e8 bb d3 07 01 0b e9 be fe ff ff 80 3d 24 89 8e 02 00 0f 85 6b ff ff ff e9 06<br /> [ +0.000004] RSP: 0018:ffff88810a39f990 EFLAGS: 00010282<br /> [ +0.000005] RAX: 0000000000000000 RBX: ffff888141bc2400 RCX: 0000000000000000<br /> [ +0.000004] RDX: 0000000000000001 RSI: dffffc0000000000 RDI: ffffffffa1213a80<br /> [ +0.000003] RBP: ffff888194bf3400 R08: ffffed117b306112 R09: ffffed117b306112<br /> [ +0.000003] R10: ffff888bd983088b R11: ffffed117b306111 R12: 0000000000000000<br /> [ +0.000003] R13: ffff888111f84d00 R14: ffff88810a3943ac R15: ffff888194bf3400<br /> [ +0.000004] FS: 0000000000000000(0000) GS:ffff888bd9800000(0000) knlGS:0000000000000000<br /> [ +0.000003] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033<br /> [ +0.000003] CR2: 000056035b208b60 CR3: 000000017795e005 CR4: 00000000007706f0<br /> [ +0.000003] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000<br /> [ +0.000003] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400<br /> [ +0.000002] PKRU: 55555554<br /> [ +0.000003] Call Trace:<br /> [ +0.000002] <br /> [ +0.000003] __flush_workqueue+0x203/0x840<br /> [ +0.000006] ? mutex_unlock+0x84/0xd0<br /> [ +0.000008] ? __pfx_mutex_unlock+0x10/0x10<br /> [ +0.000004] ? __pfx___flush_workqueue+0x10/0x10<br /> [ +0.000006] ? mutex_lock+0xa3/0xf0<br /> [ +0.000005] ib_cache_cleanup_one+0x39/0x190 [ib_core]<br /> [ +0.000174] __ib_unregister_device+0x84/0xf0 [ib_core]<br /> [ +0.000094] ib_unregister_device+0x25/0x30 [ib_core]<br /> [ +0.000093] irdma_ib_unregister_device+0x97/0xc0 [irdma]<br /> [ +0.000064] ? __pfx_irdma_ib_unregister_device+0x10/0x10 [irdma]<br /> [ +0.000059] ? up_write+0x5c/0x90<br /> [ +0.000005] irdma_remove+0x36/0x90 [irdma]<br /> [ +0.000062] auxiliary_bus_remove+0x32/0x50<br /> [ +0.000007] device_r<br /> ---truncated---