{ "data_version": "4.0", "data_type": "CVE", "data_format": "MITRE", "CVE_data_meta": { "ID": "CVE-2021-47246", "ASSIGNER": "cve@kernel.org", "STATE": "PUBLIC" }, "description": { "description_data": [ { "lang": "eng", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet/mlx5e: Fix page reclaim for dead peer hairpin\n\nWhen adding a hairpin flow, a firmware-side send queue is created for\nthe peer net device, which claims some host memory pages for its\ninternal ring buffer. If the peer net device is removed/unbound before\nthe hairpin flow is deleted, then the send queue is not destroyed which\nleads to a stack trace on pci device remove:\n\n[ 748.005230] mlx5_core 0000:08:00.2: wait_func:1094:(pid 12985): MANAGE_PAGES(0x108) timeout. Will cause a leak of a command resource\n[ 748.005231] mlx5_core 0000:08:00.2: reclaim_pages:514:(pid 12985): failed reclaiming pages: err -110\n[ 748.001835] mlx5_core 0000:08:00.2: mlx5_reclaim_root_pages:653:(pid 12985): failed reclaiming pages (-110) for func id 0x0\n[ 748.002171] ------------[ cut here ]------------\n[ 748.001177] FW pages counter is 4 after reclaiming all pages\n[ 748.001186] WARNING: CPU: 1 PID: 12985 at drivers/net/ethernet/mellanox/mlx5/core/pagealloc.c:685 mlx5_reclaim_startup_pages+0x34b/0x460 [mlx5_core] [ +0.002771] Modules linked in: cls_flower mlx5_ib mlx5_core ptp pps_core act_mirred sch_ingress openvswitch nsh xt_conntrack xt_MASQUERADE nf_conntrack_netlink nfnetlink xt_addrtype iptable_nat nf_nat nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 br_netfilter rpcrdma rdma_ucm ib_iser libiscsi scsi_transport_iscsi rdma_cm ib_umad ib_ipoib iw_cm ib_cm ib_uverbs ib_core overlay fuse [last unloaded: pps_core]\n[ 748.007225] CPU: 1 PID: 12985 Comm: tee Not tainted 5.12.0+ #1\n[ 748.001376] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.13.0-0-gf21b5a4aeb02-prebuilt.qemu.org 04/01/2014\n[ 748.002315] RIP: 0010:mlx5_reclaim_startup_pages+0x34b/0x460 [mlx5_core]\n[ 748.001679] Code: 28 00 00 00 0f 85 22 01 00 00 48 81 c4 b0 00 00 00 31 c0 5b 5d 41 5c 41 5d 41 5e 41 5f c3 48 c7 c7 40 cc 19 a1 e8 9f 71 0e e2 <0f> 0b e9 30 ff ff ff 48 c7 c7 a0 cc 19 a1 e8 8c 71 0e e2 0f 0b e9\n[ 748.003781] RSP: 0018:ffff88815220faf8 EFLAGS: 00010286\n[ 748.001149] RAX: 0000000000000000 RBX: ffff8881b4900280 RCX: 0000000000000000\n[ 748.001445] RDX: 0000000000000027 RSI: 0000000000000004 RDI: ffffed102a441f51\n[ 748.001614] RBP: 00000000000032b9 R08: 0000000000000001 R09: ffffed1054a15ee8\n[ 748.001446] R10: ffff8882a50af73b R11: ffffed1054a15ee7 R12: fffffbfff07c1e30\n[ 748.001447] R13: dffffc0000000000 R14: ffff8881b492cba8 R15: 0000000000000000\n[ 748.001429] FS: 00007f58bd08b580(0000) GS:ffff8882a5080000(0000) knlGS:0000000000000000\n[ 748.001695] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033\n[ 748.001309] CR2: 000055a026351740 CR3: 00000001d3b48006 CR4: 0000000000370ea0\n[ 748.001506] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000\n[ 748.001483] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400\n[ 748.001654] Call Trace:\n[ 748.000576] ? mlx5_satisfy_startup_pages+0x290/0x290 [mlx5_core]\n[ 748.001416] ? mlx5_cmd_teardown_hca+0xa2/0xd0 [mlx5_core]\n[ 748.001354] ? mlx5_cmd_init_hca+0x280/0x280 [mlx5_core]\n[ 748.001203] mlx5_function_teardown+0x30/0x60 [mlx5_core]\n[ 748.001275] mlx5_uninit_one+0xa7/0xc0 [mlx5_core]\n[ 748.001200] remove_one+0x5f/0xc0 [mlx5_core]\n[ 748.001075] pci_device_remove+0x9f/0x1d0\n[ 748.000833] device_release_driver_internal+0x1e0/0x490\n[ 748.001207] unbind_store+0x19f/0x200\n[ 748.000942] ? sysfs_file_ops+0x170/0x170\n[ 748.001000] kernfs_fop_write_iter+0x2bc/0x450\n[ 748.000970] new_sync_write+0x373/0x610\n[ 748.001124] ? new_sync_read+0x600/0x600\n[ 748.001057] ? lock_acquire+0x4d6/0x700\n[ 748.000908] ? lockdep_hardirqs_on_prepare+0x400/0x400\n[ 748.001126] ? fd_install+0x1c9/0x4d0\n[ 748.000951] vfs_write+0x4d0/0x800\n[ 748.000804] ksys_write+0xf9/0x1d0\n[ 748.000868] ? __x64_sys_read+0xb0/0xb0\n[ 748.000811] ? filp_open+0x50/0x50\n[ 748.000919] ? syscall_enter_from_user_mode+0x1d/0x50\n[ 748.001223] do_syscall_64+0x3f/0x80\n[ 748.000892] entry_SYSCALL_64_after_hwframe+0x44/0xae\n[ 748.00\n---truncated---" } ] }, "problemtype": { "problemtype_data": [ { "description": [ { "lang": "eng", "value": "n/a" } ] } ] }, "affects": { "vendor": { "vendor_data": [ { "vendor_name": "Linux", "product": { "product_data": [ { "product_name": "Linux", "version": { "version_data": [ { "version_affected": "<", "version_name": "4d8fcf216c90", "version_value": "4b16118665e9" }, { "version_value": "not down converted", "x_cve_json_5_version_data": { "versions": [ { "version": "4.19", "status": "affected" }, { "version": "0", "lessThan": "4.19", "status": "unaffected", "versionType": "custom" }, { "version": "5.4.128", "lessThanOrEqual": "5.4.*", "status": "unaffected", "versionType": "custom" }, { "version": "5.10.46", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "custom" }, { "version": "5.12.13", "lessThanOrEqual": "5.12.*", "status": "unaffected", "versionType": "custom" }, { "version": "5.13", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix" } ], "defaultStatus": "affected" } } ] } } ] } } ] } }, "references": { "reference_data": [ { "url": "https://git.kernel.org/stable/c/4b16118665e94c90a3e84a5190486fd0e4eedd74", "refsource": "MISC", "name": "https://git.kernel.org/stable/c/4b16118665e94c90a3e84a5190486fd0e4eedd74" }, { "url": "https://git.kernel.org/stable/c/be7f3f401d224e1efe8112b2fa8b837eeb8c5e52", "refsource": "MISC", "name": "https://git.kernel.org/stable/c/be7f3f401d224e1efe8112b2fa8b837eeb8c5e52" }, { "url": "https://git.kernel.org/stable/c/b374c1304f6d3d4752ad1412427b7bf02bb1fd61", "refsource": "MISC", "name": "https://git.kernel.org/stable/c/b374c1304f6d3d4752ad1412427b7bf02bb1fd61" }, { "url": "https://git.kernel.org/stable/c/a3e5fd9314dfc4314a9567cde96e1aef83a7458a", "refsource": "MISC", "name": "https://git.kernel.org/stable/c/a3e5fd9314dfc4314a9567cde96e1aef83a7458a" } ] }, "generator": { "engine": "bippy-a5840b7849dd" } }