210 lines
11 KiB
JSON
210 lines
11 KiB
JSON
{
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"dataType": "CVE_RECORD",
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"dataVersion": "5.2",
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"cveMetadata": {
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"cveId": "CVE-2026-74555",
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"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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"state": "PUBLISHED",
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"assignerShortName": "Linux",
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"dateReserved": "2026-08-15T05:44:03.916Z",
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"datePublished": "2026-08-15T12:28:00.729Z",
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"dateUpdated": "2026-08-19T16:38:54.912Z"
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},
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"containers": {
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"cna": {
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"providerMetadata": {
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"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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"shortName": "Linux",
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"dateUpdated": "2026-08-19T16:38:54.912Z"
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},
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"descriptions": [
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{
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"lang": "en",
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"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nscsi: libsas: Fix HA resume deadlock and hisi_sas disk-wake race\n\nCommit fbefe22811c3 (\"scsi: libsas: Don't always drain event workqueue\nfor HA resume\") introduced sas_resume_ha_no_sync() to avoid a deadlock:\nthe PHYE_RESUME_TIMEOUT handler, running on the HA event workqueue,\ncalls sas_deform_port() -> sas_destruct_devices(), which removes SCSI\ndevices and waits for the host to become runtime-active. But the host\ncannot resume until sas_resume_ha() -> sas_drain_work() returns, and the\ndrain is blocked on that very handler.\n\nHowever skipping the drain reintroduces a race: hisi_sas returns from\nresume before all PHY UP work and libsas discovery work finish. The\ncontroller may then autosuspend while disks are still waking up. The\ndisks issue IO to a suspended controller, the IO fails, and the disks\nget disabled.\n\nFix the deadlock at its source by moving the PHYE_RESUME_TIMEOUT\nnotification to after sas_drain_work(). By then the host resume is about\nto complete, so device removal through device_link no longer blocks on\nthe resume and the cycle is broken.\n\nWith the deadlock gone, restore sas_resume_ha() (the draining variant)\nin hisi_sas and remove sas_resume_ha_no_sync().\n\nThe reorder is safe for the other libsas consumers (isci, pm8001,\naic94xx, mvsas). During suspend, sas_suspend_devices() calls\nsas_notify_lldd_dev_gone() for each device, which sets dev->lldd_dev to\nNULL. When scsi_unblock_requests re-enables I/O in resume, any I/O to a\ntimed-out phy's disk is immediately rejected by the LLDD before reaching\nhardware: isci returns SAS_DEVICE_UNKNOWN (mapped to DID_BAD_TARGET),\nand pm8001 returns SAS_PHY_DOWN (mapped to DID_NO_CONNECT). Both\ncomplete directly via scsi_done() without entering SCSI EH. This is\nidentical in both the old and new ordering since lldd_dev_gone runs\nduring suspend, before resume. The reorder only affects when the\nPHYE_RESUME_TIMEOUT handler runs (synchronized by sas_drain_work()\nvs. asynchronous after resume returns), not whether I/O can reach the\ndevice. aic94xx and mvsas do not register any PM ops and never reach\nthis code path."
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}
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],
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"affected": [
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{
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"product": "Linux",
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"vendor": "Linux",
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"defaultStatus": "unaffected",
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"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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"programFiles": [
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"drivers/scsi/hisi_sas/hisi_sas_v3_hw.c",
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"drivers/scsi/libsas/sas_init.c",
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"include/scsi/libsas.h"
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],
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"versions": [
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{
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"version": "fbefe22811c3140a686e407e114789ebf328a9a2",
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"lessThan": "09357f067122e2e28ec52e27013a1660a1571618",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "fbefe22811c3140a686e407e114789ebf328a9a2",
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"lessThan": "e50a6523a603594a6d92cdecfe11997d639410a3",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "fbefe22811c3140a686e407e114789ebf328a9a2",
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"lessThan": "c391b5899dd46485a5893696c12ae3e95a3a7325",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "fbefe22811c3140a686e407e114789ebf328a9a2",
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"lessThan": "9e24b47ef81d43b3fb1b14294f09991640c79fcc",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "fbefe22811c3140a686e407e114789ebf328a9a2",
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"lessThan": "b9c44a14062093e9fc2d6bddc696cfceadb482d7",
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"status": "affected",
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"versionType": "git"
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},
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{
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"version": "fbefe22811c3140a686e407e114789ebf328a9a2",
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"lessThan": "3dbbbf656b850c9c8de05df6ad4a1dfc6ff02845",
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"status": "affected",
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"versionType": "git"
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}
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]
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},
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{
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"product": "Linux",
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"vendor": "Linux",
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"defaultStatus": "affected",
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"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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"programFiles": [
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"drivers/scsi/hisi_sas/hisi_sas_v3_hw.c",
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"drivers/scsi/libsas/sas_init.c",
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"include/scsi/libsas.h"
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],
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"versions": [
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{
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"version": "5.17",
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"status": "affected"
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},
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{
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"version": "0",
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"lessThan": "5.17",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.1.183",
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"lessThanOrEqual": "6.1.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.6.151",
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"lessThanOrEqual": "6.6.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.12.103",
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"lessThanOrEqual": "6.12.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "6.18.44",
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"lessThanOrEqual": "6.18.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "7.1.8",
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"lessThanOrEqual": "7.1.*",
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"status": "unaffected",
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"versionType": "semver"
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},
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{
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"version": "7.2",
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"lessThanOrEqual": "*",
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"status": "unaffected",
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"versionType": "original_commit_for_fix"
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}
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]
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}
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],
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"cpeApplicability": [
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{
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"nodes": [
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{
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"operator": "OR",
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"negate": false,
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"cpeMatch": [
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "5.17",
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"versionEndExcluding": "6.1.183"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "5.17",
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"versionEndExcluding": "6.6.151"
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},
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "5.17",
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"versionEndExcluding": "6.12.103"
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},
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{
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "5.17",
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"versionEndExcluding": "6.18.44"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "5.17",
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"versionEndExcluding": "7.1.8"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "5.17",
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"versionEndExcluding": "7.2"
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}
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]
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}
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]
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}
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],
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"references": [
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{
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"url": "https://git.kernel.org/stable/c/09357f067122e2e28ec52e27013a1660a1571618"
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},
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{
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"url": "https://git.kernel.org/stable/c/e50a6523a603594a6d92cdecfe11997d639410a3"
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},
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{
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"url": "https://git.kernel.org/stable/c/c391b5899dd46485a5893696c12ae3e95a3a7325"
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},
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{
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"url": "https://git.kernel.org/stable/c/9e24b47ef81d43b3fb1b14294f09991640c79fcc"
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},
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{
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"url": "https://git.kernel.org/stable/c/b9c44a14062093e9fc2d6bddc696cfceadb482d7"
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},
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{
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"url": "https://git.kernel.org/stable/c/3dbbbf656b850c9c8de05df6ad4a1dfc6ff02845"
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}
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],
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"title": "scsi: libsas: Fix HA resume deadlock and hisi_sas disk-wake race",
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"x_generator": {
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"engine": "bippy-1.2.0"
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}
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}
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}
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} |