206 lines
10 KiB
JSON
206 lines
10 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-2026-90185",
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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": "2026-09-11T19:38:34.791Z",
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"datePublished": "2026-09-17T16:07:08.392Z",
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"dateUpdated": "2026-10-19T08:59:22.077Z"
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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": "2026-10-19T08:59:22.077Z"
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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\nnull_blk: serialize configfs attribute stores with the lock\n\nThe NULLB_DEVICE_ATTR _store takes no lock: apply_fn attributes\n(submit_queues, poll_queues) get dev->NAME written again after apply_fn\nreturns, outside its lock; APPLY=NULL attributes are entirely lockless.\nconfigfs only serializes stores per-open-file, so concurrent stores on\nseparate fds race.\n\nFor apply_fn attributes, once one store's apply_fn has reconfigured the\nhardware, a second (losing) store can still overwrite dev->NAME\nafterwards. This leaves dev->submit_queues out of sync with the live\nqueue count, which is later caught by the WARN_ON_ONCE() in\nnull_map_queues().\n\nFor !apply_fn attributes, power_store()'s null_add_dev() validates and\nbuilds the device under \"lock\" but only sets CONFIGURED afterwards. A store\nslipping in during this window can change a field mid-setup -- for example,\nzone_nr_conv can be pushed above nr_zones after it has already been\nclamped, leading to an out-of-bounds dev->zones[] access.\n\nTake \"lock\" in the macro around the apply_fn call, the CONFIGURED test and\nthe field write, and move it out of nullb_apply_submit_queues()/\nnullb_apply_poll_queues() so both paths are covered once. This serializes\nstores with power_store's setup and with each other."
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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/block/null_blk/main.c"
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],
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"versions": [
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{
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"version": "45919fbfe1c487c17ea1d198534339a5e8abeae3",
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"lessThan": "8e839ed5210399a0330a8a6c5885c1d40a537c6d",
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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": "45919fbfe1c487c17ea1d198534339a5e8abeae3",
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"lessThan": "88d806d0e1d36246208386a8e55b511c1b3d647c",
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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": "45919fbfe1c487c17ea1d198534339a5e8abeae3",
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"lessThan": "3945ce8cbce4e328e6fdf0b522dc71e340de19db",
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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": "45919fbfe1c487c17ea1d198534339a5e8abeae3",
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"lessThan": "65cae82fd3c39b53430672cb9e3ecd267471a6ce",
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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": "45919fbfe1c487c17ea1d198534339a5e8abeae3",
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"lessThan": "c70994c2862b05e44728912b2ea9487d31e2aea7",
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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": "45919fbfe1c487c17ea1d198534339a5e8abeae3",
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"lessThan": "7e7fff51808237703a3a1df6dd5cae1dfd1db86d",
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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/block/null_blk/main.c"
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],
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"versions": [
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{
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"version": "5.5",
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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": "5.5",
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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": "6.1.188",
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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": "6.6.157",
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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": "6.12.110",
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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": "6.18.52",
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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": "7.2.6",
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"lessThanOrEqual": "7.2.*",
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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": "7.3",
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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": "5.5",
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"versionEndExcluding": "6.1.188"
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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": "5.5",
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"versionEndExcluding": "6.6.157"
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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": "5.5",
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"versionEndExcluding": "6.12.110"
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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": "5.5",
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"versionEndExcluding": "6.18.52"
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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": "5.5",
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"versionEndExcluding": "7.2.6"
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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": "5.5",
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"versionEndExcluding": "7.3"
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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/8e839ed5210399a0330a8a6c5885c1d40a537c6d"
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},
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{
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"url": "https://git.kernel.org/stable/c/88d806d0e1d36246208386a8e55b511c1b3d647c"
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},
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{
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"url": "https://git.kernel.org/stable/c/3945ce8cbce4e328e6fdf0b522dc71e340de19db"
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},
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{
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"url": "https://git.kernel.org/stable/c/65cae82fd3c39b53430672cb9e3ecd267471a6ce"
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},
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{
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"url": "https://git.kernel.org/stable/c/c70994c2862b05e44728912b2ea9487d31e2aea7"
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},
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{
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"url": "https://git.kernel.org/stable/c/7e7fff51808237703a3a1df6dd5cae1dfd1db86d"
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}
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],
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"title": "null_blk: serialize configfs attribute stores with the lock",
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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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} |