{"api_version":"1","generated_at":"2026-10-24T15:26:42+00:00","cve":"CVE-2026-90265","urls":{"html":"https://cve.report/CVE-2026-90265","api":"https://cve.report/api/cve/CVE-2026-90265.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-90265","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-90265"},"summary":{"title":"btrfs: defrag: fix deadlock between defrag and delalloc space reservation","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nbtrfs: defrag: fix deadlock between defrag and delalloc space reservation\n\nWhile running fsstress with autodefrag and flushoncommit, hit a deadlock\ndue to the fact that defrag reserves delalloc space while it's holding\ndirty and locked folios, besides the extent range lock. The stack traces\nare the following:\n\n   [958.624] task:kworker/u50:3   state:D stack:0     pid:20365 tgid:20365 ppid:2      task_flags:0x4208060 flags:0x00080000\n   [958.626] Workqueue: events_unbound btrfs_async_reclaim_metadata_space [btrfs]\n   [958.627] Call Trace:\n   [958.628]  <TASK>\n   [958.628]  __schedule+0x4be/0x10f0\n   [958.629]  ? preempt_count_add+0x69/0xa0\n   [958.630]  schedule+0x26/0xd0\n   [958.631]  wait_current_trans+0x102/0x160 [btrfs]\n   [958.632]  ? __pfx_autoremove_wake_function+0x10/0x10\n   [958.633]  start_transaction+0x374/0x900 [btrfs]\n   [958.634]  btrfs_commit_current_transaction+0x1d/0x70 [btrfs]\n   [958.635]  flush_space+0xca/0x5e0 [btrfs]\n   [958.636]  ? _raw_spin_unlock+0x15/0x30\n   [958.637]  ? btrfs_reduce_alloc_profile+0x8c/0x190 [btrfs]\n   [958.639]  ? _raw_spin_unlock+0x15/0x30\n   [958.640]  ? calc_available_free_space.isra.0+0x6f/0x110 [btrfs]\n   [958.641]  do_async_reclaim_metadata_space+0x84/0x190 [btrfs]\n   [958.642]  btrfs_async_reclaim_metadata_space+0x64/0x80 [btrfs]\n   [958.644]  process_one_work+0x19d/0x3a0\n   [958.644]  worker_thread+0x1c4/0x330\n   [958.645]  ? __pfx_worker_thread+0x10/0x10\n   [958.646]  kthread+0xfc/0x130\n   [958.647]  ? __pfx_kthread+0x10/0x10\n   [958.648]  ret_from_fork+0x1f7/0x2c0\n   [958.648]  ? __pfx_kthread+0x10/0x10\n   [958.649]  ret_from_fork_asm+0x1a/0x30\n   [958.650]  </TASK>\n   [958.651] task:kworker/u49:7   state:D stack:0     pid:52990 tgid:52990 ppid:2      task_flags:0x4208060 flags:0x00080000\n   [958.653] Workqueue: writeback wb_workfn (flush-btrfs-334)\n   [958.655] Call Trace:\n   [958.655]  <TASK>\n   [958.656]  __schedule+0x4be/0x10f0\n   [958.657]  ? __blk_flush_plug+0xe9/0x140\n   [958.658]  schedule+0x26/0xd0\n   [958.658]  io_schedule+0x42/0x70\n   [958.659]  folio_wait_bit_common+0x12b/0x330\n   [958.660]  ? folio_wait_bit_common+0x100/0x330\n   [958.662]  ? __pfx_wake_page_function+0x10/0x10\n   [958.663]  extent_write_cache_pages+0x599/0x830 [btrfs]\n   [958.664]  ? acpi_fwnode_get_reference_args+0x1fa/0x270\n   [958.665]  btrfs_writepages+0x77/0x130 [btrfs]\n   [958.666]  ? __pfx_end_bbio_data_write+0x10/0x10 [btrfs]\n   [958.667]  do_writepages+0xc6/0x160\n   [958.668]  __writeback_single_inode+0x42/0x310\n   [958.669]  writeback_sb_inodes+0x231/0x570\n   [958.670]  wb_writeback+0x8a/0x340\n   [958.671]  wb_workfn+0xbf/0x450\n   [958.672]  ? finish_task_switch.isra.0+0xc1/0x350\n   [958.673]  process_one_work+0x19d/0x3a0\n   [958.673]  worker_thread+0x1c4/0x330\n   [958.674]  ? __pfx_worker_thread+0x10/0x10\n   [958.675]  kthread+0xfc/0x130\n   [958.676]  ? __pfx_kthread+0x10/0x10\n   [958.676]  ret_from_fork+0x1f7/0x2c0\n   [958.677]  ? __pfx_kthread+0x10/0x10\n   [958.678]  ret_from_fork_asm+0x1a/0x30\n   [958.679]  </TASK>\n   [958.679] task:btrfs-cleaner   state:D stack:0     pid:296750 tgid:296750 ppid:2      task_flags:0x208040 flags:0x00080000\n   [958.681] Call Trace:\n   [958.682]  <TASK>\n   [958.682]  __schedule+0x4be/0x10f0\n   [958.683]  schedule+0x26/0xd0\n   [958.684]  handle_reserve_ticket+0x1b9/0x2c0 [btrfs]\n   [958.685]  ? __pfx_autoremove_wake_function+0x10/0x10\n   [958.686]  reserve_bytes+0x283/0x4c0 [btrfs]\n   [958.687]  btrfs_reserve_metadata_bytes+0x18/0xb0 [btrfs]\n   [958.688]  btrfs_delalloc_reserve_metadata+0x121/0x320 [btrfs]\n   [958.690]  btrfs_delalloc_reserve_space+0x46/0xb0 [btrfs]\n   [958.691]  btrfs_defrag_file+0x903/0x1110 [btrfs]\n   [958.692]  btrfs_run_defrag_inodes+0x334/0x430 [btrfs]\n   [958.694]  cleaner_kthread+0x97/0x1c0 [btrfs]\n   [958.694]  ? __pfx_cleaner_kthread+0x10/0x10 [btrfs]\n   [958.696]  kthread+0xfc/0x130\n   [958.696]  ? __pfx_kthread+0x10/0x10\n   [958.697]  ret_\n---truncated---","state":"PUBLISHED","assigner":"Linux","published_at":"2026-09-17 17:17:23","updated_at":"2026-10-21 13:20:46"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/c97277aa6ce8ac725642aced0fe20cd8d31f6e09","name":"https://git.kernel.org/stable/c/c97277aa6ce8ac725642aced0fe20cd8d31f6e09","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/37614074596827a5f292243673b699c90ff63e7d","name":"https://git.kernel.org/stable/c/37614074596827a5f292243673b699c90ff63e7d","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/ba02eab28041f9a4bbe9fc90c7249644fef6de0f","name":"https://git.kernel.org/stable/c/ba02eab28041f9a4bbe9fc90c7249644fef6de0f","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/a9701dd06e82c345fe70debdf8835b7eb5000c59","name":"https://git.kernel.org/stable/c/a9701dd06e82c345fe70debdf8835b7eb5000c59","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/ac916391e1c70801649f7d6f85014f687983bc33","name":"https://git.kernel.org/stable/c/ac916391e1c70801649f7d6f85014f687983bc33","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-90265","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-90265","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 22b398eeeed43d51e85b1008e51bf9663ac1f491 c97277aa6ce8ac725642aced0fe20cd8d31f6e09 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 22b398eeeed43d51e85b1008e51bf9663ac1f491 37614074596827a5f292243673b699c90ff63e7d git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 22b398eeeed43d51e85b1008e51bf9663ac1f491 a9701dd06e82c345fe70debdf8835b7eb5000c59 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 22b398eeeed43d51e85b1008e51bf9663ac1f491 ac916391e1c70801649f7d6f85014f687983bc33 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 22b398eeeed43d51e85b1008e51bf9663ac1f491 ba02eab28041f9a4bbe9fc90c7249644fef6de0f git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 5.16","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 5.16 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.6.160 6.6.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.12.114 6.12.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.52 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.2.6 7.2.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.3 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":{"cve_year":"2026","cve_id":"90265","cve":"CVE-2026-90265","epss":"0.002060000","percentile":"0.101340000","score_date":"2026-10-21","updated_at":"2026-10-22 00:15:10"},"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["fs/btrfs/defrag.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"c97277aa6ce8ac725642aced0fe20cd8d31f6e09","status":"affected","version":"22b398eeeed43d51e85b1008e51bf9663ac1f491","versionType":"git"},{"lessThan":"37614074596827a5f292243673b699c90ff63e7d","status":"affected","version":"22b398eeeed43d51e85b1008e51bf9663ac1f491","versionType":"git"},{"lessThan":"a9701dd06e82c345fe70debdf8835b7eb5000c59","status":"affected","version":"22b398eeeed43d51e85b1008e51bf9663ac1f491","versionType":"git"},{"lessThan":"ac916391e1c70801649f7d6f85014f687983bc33","status":"affected","version":"22b398eeeed43d51e85b1008e51bf9663ac1f491","versionType":"git"},{"lessThan":"ba02eab28041f9a4bbe9fc90c7249644fef6de0f","status":"affected","version":"22b398eeeed43d51e85b1008e51bf9663ac1f491","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["fs/btrfs/defrag.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"5.16"},{"lessThan":"5.16","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.6.*","status":"unaffected","version":"6.6.160","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.114","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.52","versionType":"semver"},{"lessThanOrEqual":"7.2.*","status":"unaffected","version":"7.2.6","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.3","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.6.160","versionStartIncluding":"5.16","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.12.114","versionStartIncluding":"5.16","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.52","versionStartIncluding":"5.16","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.2.6","versionStartIncluding":"5.16","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.3","versionStartIncluding":"5.16","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nbtrfs: defrag: fix deadlock between defrag and delalloc space reservation\n\nWhile running fsstress with autodefrag and flushoncommit, hit a deadlock\ndue to the fact that defrag reserves delalloc space while it's holding\ndirty and locked folios, besides the extent range lock. The stack traces\nare the following:\n\n   [958.624] task:kworker/u50:3   state:D stack:0     pid:20365 tgid:20365 ppid:2      task_flags:0x4208060 flags:0x00080000\n   [958.626] Workqueue: events_unbound btrfs_async_reclaim_metadata_space [btrfs]\n   [958.627] Call Trace:\n   [958.628]  <TASK>\n   [958.628]  __schedule+0x4be/0x10f0\n   [958.629]  ? preempt_count_add+0x69/0xa0\n   [958.630]  schedule+0x26/0xd0\n   [958.631]  wait_current_trans+0x102/0x160 [btrfs]\n   [958.632]  ? __pfx_autoremove_wake_function+0x10/0x10\n   [958.633]  start_transaction+0x374/0x900 [btrfs]\n   [958.634]  btrfs_commit_current_transaction+0x1d/0x70 [btrfs]\n   [958.635]  flush_space+0xca/0x5e0 [btrfs]\n   [958.636]  ? _raw_spin_unlock+0x15/0x30\n   [958.637]  ? btrfs_reduce_alloc_profile+0x8c/0x190 [btrfs]\n   [958.639]  ? _raw_spin_unlock+0x15/0x30\n   [958.640]  ? calc_available_free_space.isra.0+0x6f/0x110 [btrfs]\n   [958.641]  do_async_reclaim_metadata_space+0x84/0x190 [btrfs]\n   [958.642]  btrfs_async_reclaim_metadata_space+0x64/0x80 [btrfs]\n   [958.644]  process_one_work+0x19d/0x3a0\n   [958.644]  worker_thread+0x1c4/0x330\n   [958.645]  ? __pfx_worker_thread+0x10/0x10\n   [958.646]  kthread+0xfc/0x130\n   [958.647]  ? __pfx_kthread+0x10/0x10\n   [958.648]  ret_from_fork+0x1f7/0x2c0\n   [958.648]  ? __pfx_kthread+0x10/0x10\n   [958.649]  ret_from_fork_asm+0x1a/0x30\n   [958.650]  </TASK>\n   [958.651] task:kworker/u49:7   state:D stack:0     pid:52990 tgid:52990 ppid:2      task_flags:0x4208060 flags:0x00080000\n   [958.653] Workqueue: writeback wb_workfn (flush-btrfs-334)\n   [958.655] Call Trace:\n   [958.655]  <TASK>\n   [958.656]  __schedule+0x4be/0x10f0\n   [958.657]  ? __blk_flush_plug+0xe9/0x140\n   [958.658]  schedule+0x26/0xd0\n   [958.658]  io_schedule+0x42/0x70\n   [958.659]  folio_wait_bit_common+0x12b/0x330\n   [958.660]  ? folio_wait_bit_common+0x100/0x330\n   [958.662]  ? __pfx_wake_page_function+0x10/0x10\n   [958.663]  extent_write_cache_pages+0x599/0x830 [btrfs]\n   [958.664]  ? acpi_fwnode_get_reference_args+0x1fa/0x270\n   [958.665]  btrfs_writepages+0x77/0x130 [btrfs]\n   [958.666]  ? __pfx_end_bbio_data_write+0x10/0x10 [btrfs]\n   [958.667]  do_writepages+0xc6/0x160\n   [958.668]  __writeback_single_inode+0x42/0x310\n   [958.669]  writeback_sb_inodes+0x231/0x570\n   [958.670]  wb_writeback+0x8a/0x340\n   [958.671]  wb_workfn+0xbf/0x450\n   [958.672]  ? finish_task_switch.isra.0+0xc1/0x350\n   [958.673]  process_one_work+0x19d/0x3a0\n   [958.673]  worker_thread+0x1c4/0x330\n   [958.674]  ? __pfx_worker_thread+0x10/0x10\n   [958.675]  kthread+0xfc/0x130\n   [958.676]  ? __pfx_kthread+0x10/0x10\n   [958.676]  ret_from_fork+0x1f7/0x2c0\n   [958.677]  ? __pfx_kthread+0x10/0x10\n   [958.678]  ret_from_fork_asm+0x1a/0x30\n   [958.679]  </TASK>\n   [958.679] task:btrfs-cleaner   state:D stack:0     pid:296750 tgid:296750 ppid:2      task_flags:0x208040 flags:0x00080000\n   [958.681] Call Trace:\n   [958.682]  <TASK>\n   [958.682]  __schedule+0x4be/0x10f0\n   [958.683]  schedule+0x26/0xd0\n   [958.684]  handle_reserve_ticket+0x1b9/0x2c0 [btrfs]\n   [958.685]  ? __pfx_autoremove_wake_function+0x10/0x10\n   [958.686]  reserve_bytes+0x283/0x4c0 [btrfs]\n   [958.687]  btrfs_reserve_metadata_bytes+0x18/0xb0 [btrfs]\n   [958.688]  btrfs_delalloc_reserve_metadata+0x121/0x320 [btrfs]\n   [958.690]  btrfs_delalloc_reserve_space+0x46/0xb0 [btrfs]\n   [958.691]  btrfs_defrag_file+0x903/0x1110 [btrfs]\n   [958.692]  btrfs_run_defrag_inodes+0x334/0x430 [btrfs]\n   [958.694]  cleaner_kthread+0x97/0x1c0 [btrfs]\n   [958.694]  ? __pfx_cleaner_kthread+0x10/0x10 [btrfs]\n   [958.696]  kthread+0xfc/0x130\n   [958.696]  ? __pfx_kthread+0x10/0x10\n   [958.697]  ret_\n---truncated---"}],"providerMetadata":{"dateUpdated":"2026-10-21T12:50:45.545Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/c97277aa6ce8ac725642aced0fe20cd8d31f6e09"},{"url":"https://git.kernel.org/stable/c/37614074596827a5f292243673b699c90ff63e7d"},{"url":"https://git.kernel.org/stable/c/a9701dd06e82c345fe70debdf8835b7eb5000c59"},{"url":"https://git.kernel.org/stable/c/ac916391e1c70801649f7d6f85014f687983bc33"},{"url":"https://git.kernel.org/stable/c/ba02eab28041f9a4bbe9fc90c7249644fef6de0f"}],"title":"btrfs: defrag: fix deadlock between defrag and delalloc space reservation","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-90265","datePublished":"2026-09-17T16:08:01.372Z","dateReserved":"2026-09-11T19:38:34.796Z","dateUpdated":"2026-10-21T12:50:45.545Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-09-17 17:17:23","lastModifiedDate":"2026-10-21 13:20:46","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"90265","Ordinal":"1","Title":"btrfs: defrag: fix deadlock between defrag and delalloc space re","CVE":"CVE-2026-90265","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"90265","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\nbtrfs: defrag: fix deadlock between defrag and delalloc space reservation\n\nWhile running fsstress with autodefrag and flushoncommit, hit a deadlock\ndue to the fact that defrag reserves delalloc space while it's holding\ndirty and locked folios, besides the extent range lock. The stack traces\nare the following:\n\n   [958.624] task:kworker/u50:3   state:D stack:0     pid:20365 tgid:20365 ppid:2      task_flags:0x4208060 flags:0x00080000\n   [958.626] Workqueue: events_unbound btrfs_async_reclaim_metadata_space [btrfs]\n   [958.627] Call Trace:\n   [958.628]  <TASK>\n   [958.628]  __schedule+0x4be/0x10f0\n   [958.629]  ? preempt_count_add+0x69/0xa0\n   [958.630]  schedule+0x26/0xd0\n   [958.631]  wait_current_trans+0x102/0x160 [btrfs]\n   [958.632]  ? __pfx_autoremove_wake_function+0x10/0x10\n   [958.633]  start_transaction+0x374/0x900 [btrfs]\n   [958.634]  btrfs_commit_current_transaction+0x1d/0x70 [btrfs]\n   [958.635]  flush_space+0xca/0x5e0 [btrfs]\n   [958.636]  ? _raw_spin_unlock+0x15/0x30\n   [958.637]  ? btrfs_reduce_alloc_profile+0x8c/0x190 [btrfs]\n   [958.639]  ? _raw_spin_unlock+0x15/0x30\n   [958.640]  ? calc_available_free_space.isra.0+0x6f/0x110 [btrfs]\n   [958.641]  do_async_reclaim_metadata_space+0x84/0x190 [btrfs]\n   [958.642]  btrfs_async_reclaim_metadata_space+0x64/0x80 [btrfs]\n   [958.644]  process_one_work+0x19d/0x3a0\n   [958.644]  worker_thread+0x1c4/0x330\n   [958.645]  ? __pfx_worker_thread+0x10/0x10\n   [958.646]  kthread+0xfc/0x130\n   [958.647]  ? __pfx_kthread+0x10/0x10\n   [958.648]  ret_from_fork+0x1f7/0x2c0\n   [958.648]  ? __pfx_kthread+0x10/0x10\n   [958.649]  ret_from_fork_asm+0x1a/0x30\n   [958.650]  </TASK>\n   [958.651] task:kworker/u49:7   state:D stack:0     pid:52990 tgid:52990 ppid:2      task_flags:0x4208060 flags:0x00080000\n   [958.653] Workqueue: writeback wb_workfn (flush-btrfs-334)\n   [958.655] Call Trace:\n   [958.655]  <TASK>\n   [958.656]  __schedule+0x4be/0x10f0\n   [958.657]  ? __blk_flush_plug+0xe9/0x140\n   [958.658]  schedule+0x26/0xd0\n   [958.658]  io_schedule+0x42/0x70\n   [958.659]  folio_wait_bit_common+0x12b/0x330\n   [958.660]  ? folio_wait_bit_common+0x100/0x330\n   [958.662]  ? __pfx_wake_page_function+0x10/0x10\n   [958.663]  extent_write_cache_pages+0x599/0x830 [btrfs]\n   [958.664]  ? acpi_fwnode_get_reference_args+0x1fa/0x270\n   [958.665]  btrfs_writepages+0x77/0x130 [btrfs]\n   [958.666]  ? __pfx_end_bbio_data_write+0x10/0x10 [btrfs]\n   [958.667]  do_writepages+0xc6/0x160\n   [958.668]  __writeback_single_inode+0x42/0x310\n   [958.669]  writeback_sb_inodes+0x231/0x570\n   [958.670]  wb_writeback+0x8a/0x340\n   [958.671]  wb_workfn+0xbf/0x450\n   [958.672]  ? finish_task_switch.isra.0+0xc1/0x350\n   [958.673]  process_one_work+0x19d/0x3a0\n   [958.673]  worker_thread+0x1c4/0x330\n   [958.674]  ? __pfx_worker_thread+0x10/0x10\n   [958.675]  kthread+0xfc/0x130\n   [958.676]  ? __pfx_kthread+0x10/0x10\n   [958.676]  ret_from_fork+0x1f7/0x2c0\n   [958.677]  ? __pfx_kthread+0x10/0x10\n   [958.678]  ret_from_fork_asm+0x1a/0x30\n   [958.679]  </TASK>\n   [958.679] task:btrfs-cleaner   state:D stack:0     pid:296750 tgid:296750 ppid:2      task_flags:0x208040 flags:0x00080000\n   [958.681] Call Trace:\n   [958.682]  <TASK>\n   [958.682]  __schedule+0x4be/0x10f0\n   [958.683]  schedule+0x26/0xd0\n   [958.684]  handle_reserve_ticket+0x1b9/0x2c0 [btrfs]\n   [958.685]  ? __pfx_autoremove_wake_function+0x10/0x10\n   [958.686]  reserve_bytes+0x283/0x4c0 [btrfs]\n   [958.687]  btrfs_reserve_metadata_bytes+0x18/0xb0 [btrfs]\n   [958.688]  btrfs_delalloc_reserve_metadata+0x121/0x320 [btrfs]\n   [958.690]  btrfs_delalloc_reserve_space+0x46/0xb0 [btrfs]\n   [958.691]  btrfs_defrag_file+0x903/0x1110 [btrfs]\n   [958.692]  btrfs_run_defrag_inodes+0x334/0x430 [btrfs]\n   [958.694]  cleaner_kthread+0x97/0x1c0 [btrfs]\n   [958.694]  ? __pfx_cleaner_kthread+0x10/0x10 [btrfs]\n   [958.696]  kthread+0xfc/0x130\n   [958.696]  ? __pfx_kthread+0x10/0x10\n   [958.697]  ret_\n---truncated---","Type":"Description","Title":"btrfs: defrag: fix deadlock between defrag and delalloc space re"}]}}}