gsd-2021-47178
Vulnerability from gsd
Modified
2024-04-03 05:03
Details
In the Linux kernel, the following vulnerability has been resolved:
scsi: target: core: Avoid smp_processor_id() in preemptible code
The BUG message "BUG: using smp_processor_id() in preemptible [00000000]
code" was observed for TCMU devices with kernel config DEBUG_PREEMPT.
The message was observed when blktests block/005 was run on TCMU devices
with fileio backend or user:zbc backend [1]. The commit 1130b499b4a7
("scsi: target: tcm_loop: Use LIO wq cmd submission helper") triggered the
symptom. The commit modified work queue to handle commands and changed
'current->nr_cpu_allowed' at smp_processor_id() call.
The message was also observed at system shutdown when TCMU devices were not
cleaned up [2]. The function smp_processor_id() was called in SCSI host
work queue for abort handling, and triggered the BUG message. This symptom
was observed regardless of the commit 1130b499b4a7 ("scsi: target:
tcm_loop: Use LIO wq cmd submission helper").
To avoid the preemptible code check at smp_processor_id(), get CPU ID with
raw_smp_processor_id() instead. The CPU ID is used for performance
improvement then thread move to other CPU will not affect the code.
[1]
[ 56.468103] run blktests block/005 at 2021-05-12 14:16:38
[ 57.369473] check_preemption_disabled: 85 callbacks suppressed
[ 57.369480] BUG: using smp_processor_id() in preemptible [00000000] code: fio/1511
[ 57.369506] BUG: using smp_processor_id() in preemptible [00000000] code: fio/1510
[ 57.369512] BUG: using smp_processor_id() in preemptible [00000000] code: fio/1506
[ 57.369552] caller is __target_init_cmd+0x157/0x170 [target_core_mod]
[ 57.369606] CPU: 4 PID: 1506 Comm: fio Not tainted 5.13.0-rc1+ #34
[ 57.369613] Hardware name: System manufacturer System Product Name/PRIME Z270-A, BIOS 1302 03/15/2018
[ 57.369617] Call Trace:
[ 57.369621] BUG: using smp_processor_id() in preemptible [00000000] code: fio/1507
[ 57.369628] dump_stack+0x6d/0x89
[ 57.369642] check_preemption_disabled+0xc8/0xd0
[ 57.369628] caller is __target_init_cmd+0x157/0x170 [target_core_mod]
[ 57.369655] __target_init_cmd+0x157/0x170 [target_core_mod]
[ 57.369695] target_init_cmd+0x76/0x90 [target_core_mod]
[ 57.369732] tcm_loop_queuecommand+0x109/0x210 [tcm_loop]
[ 57.369744] scsi_queue_rq+0x38e/0xc40
[ 57.369761] __blk_mq_try_issue_directly+0x109/0x1c0
[ 57.369779] blk_mq_try_issue_directly+0x43/0x90
[ 57.369790] blk_mq_submit_bio+0x4e5/0x5d0
[ 57.369812] submit_bio_noacct+0x46e/0x4e0
[ 57.369830] __blkdev_direct_IO_simple+0x1a3/0x2d0
[ 57.369859] ? set_init_blocksize.isra.0+0x60/0x60
[ 57.369880] generic_file_read_iter+0x89/0x160
[ 57.369898] blkdev_read_iter+0x44/0x60
[ 57.369906] new_sync_read+0x102/0x170
[ 57.369929] vfs_read+0xd4/0x160
[ 57.369941] __x64_sys_pread64+0x6e/0xa0
[ 57.369946] ? lockdep_hardirqs_on+0x79/0x100
[ 57.369958] do_syscall_64+0x3a/0x70
[ 57.369965] entry_SYSCALL_64_after_hwframe+0x44/0xae
[ 57.369973] RIP: 0033:0x7f7ed4c1399f
[ 57.369979] Code: 08 89 3c 24 48 89 4c 24 18 e8 7d f3 ff ff 4c 8b 54 24 18 48 8b 54 24 10 41 89 c0 48 8b 74 24 08 8b 3c 24 b8 11 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 31 44 89 c7 48 89 04 24 e8 cd f3 ff ff 48 8b
[ 57.369983] RSP: 002b:00007ffd7918c580 EFLAGS: 00000293 ORIG_RAX: 0000000000000011
[ 57.369990] RAX: ffffffffffffffda RBX: 00000000015b4540 RCX: 00007f7ed4c1399f
[ 57.369993] RDX: 0000000000001000 RSI: 00000000015de000 RDI: 0000000000000009
[ 57.369996] RBP: 00000000015b4540 R08: 0000000000000000 R09: 0000000000000001
[ 57.369999] R10: 0000000000e5c000 R11: 0000000000000293 R12: 00007f7eb5269a70
[ 57.370002] R13: 0000000000000000 R14: 0000000000001000 R15: 00000000015b4568
[ 57.370031] CPU: 7 PID: 1507 Comm: fio Not tainted 5.13.0-rc1+ #34
[ 57.370036] Hardware name: System manufacturer System Product Name/PRIME Z270-A, BIOS 1302 03/15/2018
[ 57.370039] Call Trace:
[ 57.370045] dump_stack+0x6d/0x89
[ 57.370056] ch
---truncated---
Aliases
{
"gsd": {
"metadata": {
"exploitCode": "unknown",
"remediation": "unknown",
"reportConfidence": "confirmed",
"type": "vulnerability"
},
"osvSchema": {
"aliases": [
"CVE-2021-47178"
],
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\nscsi: target: core: Avoid smp_processor_id() in preemptible code\n\nThe BUG message \"BUG: using smp_processor_id() in preemptible [00000000]\ncode\" was observed for TCMU devices with kernel config DEBUG_PREEMPT.\n\nThe message was observed when blktests block/005 was run on TCMU devices\nwith fileio backend or user:zbc backend [1]. The commit 1130b499b4a7\n(\"scsi: target: tcm_loop: Use LIO wq cmd submission helper\") triggered the\nsymptom. The commit modified work queue to handle commands and changed\n\u0027current-\u003enr_cpu_allowed\u0027 at smp_processor_id() call.\n\nThe message was also observed at system shutdown when TCMU devices were not\ncleaned up [2]. The function smp_processor_id() was called in SCSI host\nwork queue for abort handling, and triggered the BUG message. This symptom\nwas observed regardless of the commit 1130b499b4a7 (\"scsi: target:\ntcm_loop: Use LIO wq cmd submission helper\").\n\nTo avoid the preemptible code check at smp_processor_id(), get CPU ID with\nraw_smp_processor_id() instead. The CPU ID is used for performance\nimprovement then thread move to other CPU will not affect the code.\n\n[1]\n\n[ 56.468103] run blktests block/005 at 2021-05-12 14:16:38\n[ 57.369473] check_preemption_disabled: 85 callbacks suppressed\n[ 57.369480] BUG: using smp_processor_id() in preemptible [00000000] code: fio/1511\n[ 57.369506] BUG: using smp_processor_id() in preemptible [00000000] code: fio/1510\n[ 57.369512] BUG: using smp_processor_id() in preemptible [00000000] code: fio/1506\n[ 57.369552] caller is __target_init_cmd+0x157/0x170 [target_core_mod]\n[ 57.369606] CPU: 4 PID: 1506 Comm: fio Not tainted 5.13.0-rc1+ #34\n[ 57.369613] Hardware name: System manufacturer System Product Name/PRIME Z270-A, BIOS 1302 03/15/2018\n[ 57.369617] Call Trace:\n[ 57.369621] BUG: using smp_processor_id() in preemptible [00000000] code: fio/1507\n[ 57.369628] dump_stack+0x6d/0x89\n[ 57.369642] check_preemption_disabled+0xc8/0xd0\n[ 57.369628] caller is __target_init_cmd+0x157/0x170 [target_core_mod]\n[ 57.369655] __target_init_cmd+0x157/0x170 [target_core_mod]\n[ 57.369695] target_init_cmd+0x76/0x90 [target_core_mod]\n[ 57.369732] tcm_loop_queuecommand+0x109/0x210 [tcm_loop]\n[ 57.369744] scsi_queue_rq+0x38e/0xc40\n[ 57.369761] __blk_mq_try_issue_directly+0x109/0x1c0\n[ 57.369779] blk_mq_try_issue_directly+0x43/0x90\n[ 57.369790] blk_mq_submit_bio+0x4e5/0x5d0\n[ 57.369812] submit_bio_noacct+0x46e/0x4e0\n[ 57.369830] __blkdev_direct_IO_simple+0x1a3/0x2d0\n[ 57.369859] ? set_init_blocksize.isra.0+0x60/0x60\n[ 57.369880] generic_file_read_iter+0x89/0x160\n[ 57.369898] blkdev_read_iter+0x44/0x60\n[ 57.369906] new_sync_read+0x102/0x170\n[ 57.369929] vfs_read+0xd4/0x160\n[ 57.369941] __x64_sys_pread64+0x6e/0xa0\n[ 57.369946] ? lockdep_hardirqs_on+0x79/0x100\n[ 57.369958] do_syscall_64+0x3a/0x70\n[ 57.369965] entry_SYSCALL_64_after_hwframe+0x44/0xae\n[ 57.369973] RIP: 0033:0x7f7ed4c1399f\n[ 57.369979] Code: 08 89 3c 24 48 89 4c 24 18 e8 7d f3 ff ff 4c 8b 54 24 18 48 8b 54 24 10 41 89 c0 48 8b 74 24 08 8b 3c 24 b8 11 00 00 00 0f 05 \u003c48\u003e 3d 00 f0 ff ff 77 31 44 89 c7 48 89 04 24 e8 cd f3 ff ff 48 8b\n[ 57.369983] RSP: 002b:00007ffd7918c580 EFLAGS: 00000293 ORIG_RAX: 0000000000000011\n[ 57.369990] RAX: ffffffffffffffda RBX: 00000000015b4540 RCX: 00007f7ed4c1399f\n[ 57.369993] RDX: 0000000000001000 RSI: 00000000015de000 RDI: 0000000000000009\n[ 57.369996] RBP: 00000000015b4540 R08: 0000000000000000 R09: 0000000000000001\n[ 57.369999] R10: 0000000000e5c000 R11: 0000000000000293 R12: 00007f7eb5269a70\n[ 57.370002] R13: 0000000000000000 R14: 0000000000001000 R15: 00000000015b4568\n[ 57.370031] CPU: 7 PID: 1507 Comm: fio Not tainted 5.13.0-rc1+ #34\n[ 57.370036] Hardware name: System manufacturer System Product Name/PRIME Z270-A, BIOS 1302 03/15/2018\n[ 57.370039] Call Trace:\n[ 57.370045] dump_stack+0x6d/0x89\n[ 57.370056] ch\n---truncated---",
"id": "GSD-2021-47178",
"modified": "2024-04-03T05:03:55.045343Z",
"schema_version": "1.4.0"
}
},
"namespaces": {
"cve.org": {
"CVE_data_meta": {
"ASSIGNER": "cve@kernel.org",
"ID": "CVE-2021-47178",
"STATE": "PUBLIC"
},
"affects": {
"vendor": {
"vendor_data": [
{
"product": {
"product_data": [
{
"product_name": "Linux",
"version": {
"version_data": [
{
"version_affected": "\u003c",
"version_name": "008b936bbde3",
"version_value": "a222d2794c53"
},
{
"version_affected": "\u003c",
"version_name": "1526d9f10c61",
"version_value": "a20b6eaf4f35"
},
{
"version_value": "not down converted",
"x_cve_json_5_version_data": {
"defaultStatus": "affected",
"versions": [
{
"status": "affected",
"version": "5.11"
},
{
"lessThan": "5.11",
"status": "unaffected",
"version": "0",
"versionType": "custom"
},
{
"lessThanOrEqual": "5.12.*",
"status": "unaffected",
"version": "5.12.9",
"versionType": "custom"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "5.13",
"versionType": "original_commit_for_fix"
}
]
}
}
]
}
}
]
},
"vendor_name": "Linux"
}
]
}
},
"data_format": "MITRE",
"data_type": "CVE",
"data_version": "4.0",
"description": {
"description_data": [
{
"lang": "eng",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nscsi: target: core: Avoid smp_processor_id() in preemptible code\n\nThe BUG message \"BUG: using smp_processor_id() in preemptible [00000000]\ncode\" was observed for TCMU devices with kernel config DEBUG_PREEMPT.\n\nThe message was observed when blktests block/005 was run on TCMU devices\nwith fileio backend or user:zbc backend [1]. The commit 1130b499b4a7\n(\"scsi: target: tcm_loop: Use LIO wq cmd submission helper\") triggered the\nsymptom. The commit modified work queue to handle commands and changed\n\u0027current-\u003enr_cpu_allowed\u0027 at smp_processor_id() call.\n\nThe message was also observed at system shutdown when TCMU devices were not\ncleaned up [2]. The function smp_processor_id() was called in SCSI host\nwork queue for abort handling, and triggered the BUG message. This symptom\nwas observed regardless of the commit 1130b499b4a7 (\"scsi: target:\ntcm_loop: Use LIO wq cmd submission helper\").\n\nTo avoid the preemptible code check at smp_processor_id(), get CPU ID with\nraw_smp_processor_id() instead. The CPU ID is used for performance\nimprovement then thread move to other CPU will not affect the code.\n\n[1]\n\n[ 56.468103] run blktests block/005 at 2021-05-12 14:16:38\n[ 57.369473] check_preemption_disabled: 85 callbacks suppressed\n[ 57.369480] BUG: using smp_processor_id() in preemptible [00000000] code: fio/1511\n[ 57.369506] BUG: using smp_processor_id() in preemptible [00000000] code: fio/1510\n[ 57.369512] BUG: using smp_processor_id() in preemptible [00000000] code: fio/1506\n[ 57.369552] caller is __target_init_cmd+0x157/0x170 [target_core_mod]\n[ 57.369606] CPU: 4 PID: 1506 Comm: fio Not tainted 5.13.0-rc1+ #34\n[ 57.369613] Hardware name: System manufacturer System Product Name/PRIME Z270-A, BIOS 1302 03/15/2018\n[ 57.369617] Call Trace:\n[ 57.369621] BUG: using smp_processor_id() in preemptible [00000000] code: fio/1507\n[ 57.369628] dump_stack+0x6d/0x89\n[ 57.369642] check_preemption_disabled+0xc8/0xd0\n[ 57.369628] caller is __target_init_cmd+0x157/0x170 [target_core_mod]\n[ 57.369655] __target_init_cmd+0x157/0x170 [target_core_mod]\n[ 57.369695] target_init_cmd+0x76/0x90 [target_core_mod]\n[ 57.369732] tcm_loop_queuecommand+0x109/0x210 [tcm_loop]\n[ 57.369744] scsi_queue_rq+0x38e/0xc40\n[ 57.369761] __blk_mq_try_issue_directly+0x109/0x1c0\n[ 57.369779] blk_mq_try_issue_directly+0x43/0x90\n[ 57.369790] blk_mq_submit_bio+0x4e5/0x5d0\n[ 57.369812] submit_bio_noacct+0x46e/0x4e0\n[ 57.369830] __blkdev_direct_IO_simple+0x1a3/0x2d0\n[ 57.369859] ? set_init_blocksize.isra.0+0x60/0x60\n[ 57.369880] generic_file_read_iter+0x89/0x160\n[ 57.369898] blkdev_read_iter+0x44/0x60\n[ 57.369906] new_sync_read+0x102/0x170\n[ 57.369929] vfs_read+0xd4/0x160\n[ 57.369941] __x64_sys_pread64+0x6e/0xa0\n[ 57.369946] ? lockdep_hardirqs_on+0x79/0x100\n[ 57.369958] do_syscall_64+0x3a/0x70\n[ 57.369965] entry_SYSCALL_64_after_hwframe+0x44/0xae\n[ 57.369973] RIP: 0033:0x7f7ed4c1399f\n[ 57.369979] Code: 08 89 3c 24 48 89 4c 24 18 e8 7d f3 ff ff 4c 8b 54 24 18 48 8b 54 24 10 41 89 c0 48 8b 74 24 08 8b 3c 24 b8 11 00 00 00 0f 05 \u003c48\u003e 3d 00 f0 ff ff 77 31 44 89 c7 48 89 04 24 e8 cd f3 ff ff 48 8b\n[ 57.369983] RSP: 002b:00007ffd7918c580 EFLAGS: 00000293 ORIG_RAX: 0000000000000011\n[ 57.369990] RAX: ffffffffffffffda RBX: 00000000015b4540 RCX: 00007f7ed4c1399f\n[ 57.369993] RDX: 0000000000001000 RSI: 00000000015de000 RDI: 0000000000000009\n[ 57.369996] RBP: 00000000015b4540 R08: 0000000000000000 R09: 0000000000000001\n[ 57.369999] R10: 0000000000e5c000 R11: 0000000000000293 R12: 00007f7eb5269a70\n[ 57.370002] R13: 0000000000000000 R14: 0000000000001000 R15: 00000000015b4568\n[ 57.370031] CPU: 7 PID: 1507 Comm: fio Not tainted 5.13.0-rc1+ #34\n[ 57.370036] Hardware name: System manufacturer System Product Name/PRIME Z270-A, BIOS 1302 03/15/2018\n[ 57.370039] Call Trace:\n[ 57.370045] dump_stack+0x6d/0x89\n[ 57.370056] ch\n---truncated---"
}
]
},
"generator": {
"engine": "bippy-5f0117140d9a"
},
"problemtype": {
"problemtype_data": [
{
"description": [
{
"lang": "eng",
"value": "n/a"
}
]
}
]
},
"references": {
"reference_data": [
{
"name": "https://git.kernel.org/stable/c/a222d2794c53f8165de20aa91b39e35e4b72bce9",
"refsource": "MISC",
"url": "https://git.kernel.org/stable/c/a222d2794c53f8165de20aa91b39e35e4b72bce9"
},
{
"name": "https://git.kernel.org/stable/c/a20b6eaf4f35046a429cde57bee7eb5f13d6857f",
"refsource": "MISC",
"url": "https://git.kernel.org/stable/c/a20b6eaf4f35046a429cde57bee7eb5f13d6857f"
},
{
"name": "https://git.kernel.org/stable/c/70ca3c57ff914113f681e657634f7fbfa68e1ad1",
"refsource": "MISC",
"url": "https://git.kernel.org/stable/c/70ca3c57ff914113f681e657634f7fbfa68e1ad1"
}
]
}
},
"nvd.nist.gov": {
"cve": {
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nscsi: target: core: Avoid smp_processor_id() in preemptible code\n\nThe BUG message \"BUG: using smp_processor_id() in preemptible [00000000]\ncode\" was observed for TCMU devices with kernel config DEBUG_PREEMPT.\n\nThe message was observed when blktests block/005 was run on TCMU devices\nwith fileio backend or user:zbc backend [1]. The commit 1130b499b4a7\n(\"scsi: target: tcm_loop: Use LIO wq cmd submission helper\") triggered the\nsymptom. The commit modified work queue to handle commands and changed\n\u0027current-\u003enr_cpu_allowed\u0027 at smp_processor_id() call.\n\nThe message was also observed at system shutdown when TCMU devices were not\ncleaned up [2]. The function smp_processor_id() was called in SCSI host\nwork queue for abort handling, and triggered the BUG message. This symptom\nwas observed regardless of the commit 1130b499b4a7 (\"scsi: target:\ntcm_loop: Use LIO wq cmd submission helper\").\n\nTo avoid the preemptible code check at smp_processor_id(), get CPU ID with\nraw_smp_processor_id() instead. The CPU ID is used for performance\nimprovement then thread move to other CPU will not affect the code.\n\n[1]\n\n[ 56.468103] run blktests block/005 at 2021-05-12 14:16:38\n[ 57.369473] check_preemption_disabled: 85 callbacks suppressed\n[ 57.369480] BUG: using smp_processor_id() in preemptible [00000000] code: fio/1511\n[ 57.369506] BUG: using smp_processor_id() in preemptible [00000000] code: fio/1510\n[ 57.369512] BUG: using smp_processor_id() in preemptible [00000000] code: fio/1506\n[ 57.369552] caller is __target_init_cmd+0x157/0x170 [target_core_mod]\n[ 57.369606] CPU: 4 PID: 1506 Comm: fio Not tainted 5.13.0-rc1+ #34\n[ 57.369613] Hardware name: System manufacturer System Product Name/PRIME Z270-A, BIOS 1302 03/15/2018\n[ 57.369617] Call Trace:\n[ 57.369621] BUG: using smp_processor_id() in preemptible [00000000] code: fio/1507\n[ 57.369628] dump_stack+0x6d/0x89\n[ 57.369642] check_preemption_disabled+0xc8/0xd0\n[ 57.369628] caller is __target_init_cmd+0x157/0x170 [target_core_mod]\n[ 57.369655] __target_init_cmd+0x157/0x170 [target_core_mod]\n[ 57.369695] target_init_cmd+0x76/0x90 [target_core_mod]\n[ 57.369732] tcm_loop_queuecommand+0x109/0x210 [tcm_loop]\n[ 57.369744] scsi_queue_rq+0x38e/0xc40\n[ 57.369761] __blk_mq_try_issue_directly+0x109/0x1c0\n[ 57.369779] blk_mq_try_issue_directly+0x43/0x90\n[ 57.369790] blk_mq_submit_bio+0x4e5/0x5d0\n[ 57.369812] submit_bio_noacct+0x46e/0x4e0\n[ 57.369830] __blkdev_direct_IO_simple+0x1a3/0x2d0\n[ 57.369859] ? set_init_blocksize.isra.0+0x60/0x60\n[ 57.369880] generic_file_read_iter+0x89/0x160\n[ 57.369898] blkdev_read_iter+0x44/0x60\n[ 57.369906] new_sync_read+0x102/0x170\n[ 57.369929] vfs_read+0xd4/0x160\n[ 57.369941] __x64_sys_pread64+0x6e/0xa0\n[ 57.369946] ? lockdep_hardirqs_on+0x79/0x100\n[ 57.369958] do_syscall_64+0x3a/0x70\n[ 57.369965] entry_SYSCALL_64_after_hwframe+0x44/0xae\n[ 57.369973] RIP: 0033:0x7f7ed4c1399f\n[ 57.369979] Code: 08 89 3c 24 48 89 4c 24 18 e8 7d f3 ff ff 4c 8b 54 24 18 48 8b 54 24 10 41 89 c0 48 8b 74 24 08 8b 3c 24 b8 11 00 00 00 0f 05 \u003c48\u003e 3d 00 f0 ff ff 77 31 44 89 c7 48 89 04 24 e8 cd f3 ff ff 48 8b\n[ 57.369983] RSP: 002b:00007ffd7918c580 EFLAGS: 00000293 ORIG_RAX: 0000000000000011\n[ 57.369990] RAX: ffffffffffffffda RBX: 00000000015b4540 RCX: 00007f7ed4c1399f\n[ 57.369993] RDX: 0000000000001000 RSI: 00000000015de000 RDI: 0000000000000009\n[ 57.369996] RBP: 00000000015b4540 R08: 0000000000000000 R09: 0000000000000001\n[ 57.369999] R10: 0000000000e5c000 R11: 0000000000000293 R12: 00007f7eb5269a70\n[ 57.370002] R13: 0000000000000000 R14: 0000000000001000 R15: 00000000015b4568\n[ 57.370031] CPU: 7 PID: 1507 Comm: fio Not tainted 5.13.0-rc1+ #34\n[ 57.370036] Hardware name: System manufacturer System Product Name/PRIME Z270-A, BIOS 1302 03/15/2018\n[ 57.370039] Call Trace:\n[ 57.370045] dump_stack+0x6d/0x89\n[ 57.370056] ch\n---truncated---"
},
{
"lang": "es",
"value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: scsi: target: core: Evite smp_processor_id() en c\u00f3digo interrumpible Se observ\u00f3 el mensaje de ERROR \"ERROR: usar smp_processor_id() en c\u00f3digo interrumpible [00000000]\" para dispositivos TCMU con configuraci\u00f3n de kernel DEBUG_PREEMPT. El mensaje se observ\u00f3 cuando se ejecut\u00f3 blktests block/005 en dispositivos TCMU con backend fileio o usuario:zbc [1]. La confirmaci\u00f3n 1130b499b4a7 (\"scsi: target: tcm_loop: Use el asistente de env\u00edo LIO wq cmd\") desencaden\u00f3 el s\u00edntoma. La confirmaci\u00f3n modific\u00f3 la cola de trabajo para manejar comandos y cambi\u00f3 \u0027current-\u0026gt;nr_cpu_allowed\u0027 en la llamada a smp_processor_id(). El mensaje tambi\u00e9n se observ\u00f3 al apagar el sistema cuando los dispositivos TCMU no se limpiaron [2]. La funci\u00f3n smp_processor_id() fue llamada en la cola de trabajo del host SCSI para el manejo de abortos y activ\u00f3 el mensaje de ERROR. Este s\u00edntoma se observ\u00f3 independientemente de la confirmaci\u00f3n 1130b499b4a7 (\"scsi: target: tcm_loop: Use el asistente de env\u00edo LIO wq cmd\"). Para evitar la verificaci\u00f3n del c\u00f3digo interrumpible en smp_processor_id(), obtenga el ID de la CPU con raw_smp_processor_id() en su lugar. El ID de la CPU se utiliza para mejorar el rendimiento, luego el movimiento del subproceso a otra CPU no afectar\u00e1 el c\u00f3digo. [1] [56.468103] ejecute blktests block/005 el 2021-05-12 14:16:38 [57.369473] check_preemption_disabled: 85 devoluciones de llamada suprimidas [57.369480] ERROR: usar smp_processor_id() en c\u00f3digo preferente [00000000]: fio/151 1 [ 57.369506] ERROR: usar smp_processor_id() en c\u00f3digo interrumpible [00000000]: fio/1510 [57.369512] ERROR: usar smp_processor_id() en c\u00f3digo interrumpible [00000000]: fio/1506 [57.369552] la persona que llama es __target_init_cmd+0 x157/0x170 [objetivo_core_mod] [ 57.369606] CPU: 4 PID: 1506 Comm: fio Not tainted 5.13.0-rc1+ #34 [ 57.369613] Nombre del hardware: Fabricante del sistema Nombre del producto del sistema/PRIME Z270-A, BIOS 1302 15/03/2018 [ 57.369617] Seguimiento de llamadas : [57.369621] ERROR: usar smp_processor_id() en c\u00f3digo interrumpible [00000000]: fio/1507 [57.369628] dump_stack+0x6d/0x89 [57.369642] check_preemption_disabled+0xc8/0xd0 [57.369628] la persona que llama es __ target_init_cmd+0x157/0x170 [target_core_mod] [ 57.369655] __target_init_cmd+0x157/0x170 [target_core_mod] [ 57.369695] target_init_cmd+0x76/0x90 [target_core_mod] [ 57.369732] tcm_loop_queuecommand+0x109/0x210 [tcm_loop] [ 57 .369744] scsi_queue_rq+0x38e/0xc40 [ 57.369761] __blk_mq_try_issue_directly+0x109/0x1c0 [ 57.369779 ] blk_mq_try_issue_directly+0x43/0x90 [ 57.369790] blk_mq_submit_bio+0x4e5/0x5d0 [ 57.369812] submit_bio_noacct+0x46e/0x4e0 [ 57.369830] __blkdev_direct_IO_simple+0x1a3/0x2 d0 [57.369859]? set_init_blocksize.isra.0+0x60/0x60 [ 57.369880] generic_file_read_iter+0x89/0x160 [ 57.369898] blkdev_read_iter+0x44/0x60 [ 57.369906] new_sync_read+0x102/0x170 [ 57.369929 ] vfs_read+0xd4/0x160 [ 57.369941] __x64_sys_pread64+0x6e/0xa0 [ 57.369946] ? lockdep_hardirqs_on+0x79/0x100 [ 57.369958] do_syscall_64+0x3a/0x70 [ 57.369965] Entry_SYSCALL_64_after_hwframe+0x44/0xae [ 57.369973] RIP: 0033:0x7f7ed4c1399f [ 5 7.369979] C\u00f3digo: 08 89 3c 24 48 89 4c 24 18 e8 7d f3 ff ff 4c 8b 54 24 18 48 8b 54 24 10 41 89 c0 48 8b 74 24 08 8b 3c 24 b8 11 00 00 00 0f 05 \u0026lt;48\u0026gt; 3d 00 f0 ff ff 77 31 44 89 c7 48 89 04 24 e8 cd f3 ff ff 48 8b [ 57.369983] RSP: 002b:00007ffd7918c580 EFLAGS: 00000293 ORIG_RAX: 0000000000000011 [ 57.369990] RAX: fffffffffffffffda RBX: 00000000015b4540 RCX: 00 007f7ed4c1399f [ 57.369993] RDX: 0000000000001000 RSI: 00000000015de000 RDI: 000000000000000009 [ 57.369996] RBP: 00000000015b4540 R08: 000 0000000000000 R09: 0000000000000001 [ 57.369999] R10: 0000000000e5c000 R11: 0000000000000293 R12: 00007f7eb5269a70 [ 57.370002] R13: 00000000000000000 R14: 000000000000 1000 R15: 00000000015b4568 [57.370031] CPU: 7 PID: 1507 ---truncado---"
}
],
"id": "CVE-2021-47178",
"lastModified": "2024-04-04T14:15:08.850",
"metrics": {},
"published": "2024-03-25T10:15:09.267",
"references": [
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/70ca3c57ff914113f681e657634f7fbfa68e1ad1"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/a20b6eaf4f35046a429cde57bee7eb5f13d6857f"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/a222d2794c53f8165de20aa91b39e35e4b72bce9"
}
],
"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"vulnStatus": "Awaiting Analysis"
}
}
}
}
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- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
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- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.