{"api_version":"1","generated_at":"2026-11-11T06:37:19+00:00","cve":"CVE-2022-50323","urls":{"html":"https://cve.report/CVE-2022-50323","api":"https://cve.report/api/cve/CVE-2022-50323.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2022-50323","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2022-50323"},"summary":{"title":"net: do not sense pfmemalloc status in skb_append_pagefrags()","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet: do not sense pfmemalloc status in skb_append_pagefrags()\n\nskb_append_pagefrags() is used by af_unix and udp sendpage()\nimplementation so far.\n\nIn commit 326140063946 (\"tcp: TX zerocopy should not sense\npfmemalloc status\") we explained why we should not sense\npfmemalloc status for pages owned by user space.\n\nWe should also use skb_fill_page_desc_noacc()\nin skb_append_pagefrags() to avoid following KCSAN report:\n\nBUG: KCSAN: data-race in lru_add_fn / skb_append_pagefrags\n\nwrite to 0xffffea00058fc1c8 of 8 bytes by task 17319 on cpu 0:\n__list_add include/linux/list.h:73 [inline]\nlist_add include/linux/list.h:88 [inline]\nlruvec_add_folio include/linux/mm_inline.h:323 [inline]\nlru_add_fn+0x327/0x410 mm/swap.c:228\nfolio_batch_move_lru+0x1e1/0x2a0 mm/swap.c:246\nlru_add_drain_cpu+0x73/0x250 mm/swap.c:669\nlru_add_drain+0x21/0x60 mm/swap.c:773\nfree_pages_and_swap_cache+0x16/0x70 mm/swap_state.c:311\ntlb_batch_pages_flush mm/mmu_gather.c:59 [inline]\ntlb_flush_mmu_free mm/mmu_gather.c:256 [inline]\ntlb_flush_mmu+0x5b2/0x640 mm/mmu_gather.c:263\ntlb_finish_mmu+0x86/0x100 mm/mmu_gather.c:363\nexit_mmap+0x190/0x4d0 mm/mmap.c:3098\n__mmput+0x27/0x1b0 kernel/fork.c:1185\nmmput+0x3d/0x50 kernel/fork.c:1207\ncopy_process+0x19fc/0x2100 kernel/fork.c:2518\nkernel_clone+0x166/0x550 kernel/fork.c:2671\n__do_sys_clone kernel/fork.c:2812 [inline]\n__se_sys_clone kernel/fork.c:2796 [inline]\n__x64_sys_clone+0xc3/0xf0 kernel/fork.c:2796\ndo_syscall_x64 arch/x86/entry/common.c:50 [inline]\ndo_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80\nentry_SYSCALL_64_after_hwframe+0x63/0xcd\n\nread to 0xffffea00058fc1c8 of 8 bytes by task 17325 on cpu 1:\npage_is_pfmemalloc include/linux/mm.h:1817 [inline]\n__skb_fill_page_desc include/linux/skbuff.h:2432 [inline]\nskb_fill_page_desc include/linux/skbuff.h:2453 [inline]\nskb_append_pagefrags+0x210/0x600 net/core/skbuff.c:3974\nunix_stream_sendpage+0x45e/0x990 net/unix/af_unix.c:2338\nkernel_sendpage+0x184/0x300 net/socket.c:3561\nsock_sendpage+0x5a/0x70 net/socket.c:1054\npipe_to_sendpage+0x128/0x160 fs/splice.c:361\nsplice_from_pipe_feed fs/splice.c:415 [inline]\n__splice_from_pipe+0x222/0x4d0 fs/splice.c:559\nsplice_from_pipe fs/splice.c:594 [inline]\ngeneric_splice_sendpage+0x89/0xc0 fs/splice.c:743\ndo_splice_from fs/splice.c:764 [inline]\ndirect_splice_actor+0x80/0xa0 fs/splice.c:931\nsplice_direct_to_actor+0x305/0x620 fs/splice.c:886\ndo_splice_direct+0xfb/0x180 fs/splice.c:974\ndo_sendfile+0x3bf/0x910 fs/read_write.c:1255\n__do_sys_sendfile64 fs/read_write.c:1323 [inline]\n__se_sys_sendfile64 fs/read_write.c:1309 [inline]\n__x64_sys_sendfile64+0x10c/0x150 fs/read_write.c:1309\ndo_syscall_x64 arch/x86/entry/common.c:50 [inline]\ndo_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80\nentry_SYSCALL_64_after_hwframe+0x63/0xcd\n\nvalue changed: 0x0000000000000000 -> 0xffffea00058fc188\n\nReported by Kernel Concurrency Sanitizer on:\nCPU: 1 PID: 17325 Comm: syz-executor.0 Not tainted 6.1.0-rc1-syzkaller-00158-g440b7895c990-dirty #0\nHardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/11/2022","state":"PUBLISHED","assigner":"Linux","published_at":"2025-09-15 15:15:44","updated_at":"2026-11-05 20:17:34"},"problem_types":["NVD-CWE-noinfo"],"metrics":[{"version":"3.1","source":"nvd@nist.gov","type":"Primary","score":"5.5","severity":"MEDIUM","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","data":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","baseScore":5.5,"baseSeverity":"MEDIUM","attackVector":"LOCAL","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"HIGH"}}],"references":[{"url":"https://git.kernel.org/stable/c/847a2859814b31392340a2b16604b25afaa92dcc","name":"https://git.kernel.org/stable/c/847a2859814b31392340a2b16604b25afaa92dcc","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/92b4c5c3fa810212da20088bcc6c0a77fc8607bd","name":"https://git.kernel.org/stable/c/92b4c5c3fa810212da20088bcc6c0a77fc8607bd","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/228ebc41dfab5b5d34cd76835ddb0ca8ee12f513","name":"https://git.kernel.org/stable/c/228ebc41dfab5b5d34cd76835ddb0ca8ee12f513","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2022-50323","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2022-50323","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 8527c9a6bf8e54fef0a8d3d7d8874a48c725c915 92b4c5c3fa810212da20088bcc6c0a77fc8607bd git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 3261400639463a853ba2b3be8bd009c2a8089775 847a2859814b31392340a2b16604b25afaa92dcc git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 3261400639463a853ba2b3be8bd009c2a8089775 228ebc41dfab5b5d34cd76835ddb0ca8ee12f513 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6730c48ed6b0cd939fc9b30b2d621ce0b89bea83 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 5.15.68 5.15.77 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 5.19.9 5.20 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6.0","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.0 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 5.15.77 5.15.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.0.7 6.0.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.1 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[{"cve_year":"2022","cve_id":"50323","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"o","cpe4":"linux","cpe5":"linux_kernel","cpe6":"*","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"}],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"adp":[{"metrics":[{"other":{"content":{"id":"CVE-2022-50323","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","timestamp":"2026-11-05T20:09:57.312034Z","version":"2.0.3"},"type":"ssvc"}}],"providerMetadata":{"dateUpdated":"2026-11-05T20:10:35.352Z","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP"},"title":"CISA ADP Vulnrichment"}],"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["net/core/skbuff.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"92b4c5c3fa810212da20088bcc6c0a77fc8607bd","status":"affected","version":"8527c9a6bf8e54fef0a8d3d7d8874a48c725c915","versionType":"git"},{"lessThan":"847a2859814b31392340a2b16604b25afaa92dcc","status":"affected","version":"3261400639463a853ba2b3be8bd009c2a8089775","versionType":"git"},{"lessThan":"228ebc41dfab5b5d34cd76835ddb0ca8ee12f513","status":"affected","version":"3261400639463a853ba2b3be8bd009c2a8089775","versionType":"git"},{"status":"affected","version":"6730c48ed6b0cd939fc9b30b2d621ce0b89bea83","versionType":"git"},{"lessThan":"5.15.77","status":"affected","version":"5.15.68","versionType":"semver"},{"lessThan":"5.20","status":"affected","version":"5.19.9","versionType":"semver"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["net/core/skbuff.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"6.0"},{"lessThan":"6.0","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"5.15.*","status":"unaffected","version":"5.15.77","versionType":"semver"},{"lessThanOrEqual":"6.0.*","status":"unaffected","version":"6.0.7","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"6.1","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"5.15.77","versionStartIncluding":"5.15.68","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.0.7","versionStartIncluding":"6.0","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.1","versionStartIncluding":"6.0","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.19.9","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet: do not sense pfmemalloc status in skb_append_pagefrags()\n\nskb_append_pagefrags() is used by af_unix and udp sendpage()\nimplementation so far.\n\nIn commit 326140063946 (\"tcp: TX zerocopy should not sense\npfmemalloc status\") we explained why we should not sense\npfmemalloc status for pages owned by user space.\n\nWe should also use skb_fill_page_desc_noacc()\nin skb_append_pagefrags() to avoid following KCSAN report:\n\nBUG: KCSAN: data-race in lru_add_fn / skb_append_pagefrags\n\nwrite to 0xffffea00058fc1c8 of 8 bytes by task 17319 on cpu 0:\n__list_add include/linux/list.h:73 [inline]\nlist_add include/linux/list.h:88 [inline]\nlruvec_add_folio include/linux/mm_inline.h:323 [inline]\nlru_add_fn+0x327/0x410 mm/swap.c:228\nfolio_batch_move_lru+0x1e1/0x2a0 mm/swap.c:246\nlru_add_drain_cpu+0x73/0x250 mm/swap.c:669\nlru_add_drain+0x21/0x60 mm/swap.c:773\nfree_pages_and_swap_cache+0x16/0x70 mm/swap_state.c:311\ntlb_batch_pages_flush mm/mmu_gather.c:59 [inline]\ntlb_flush_mmu_free mm/mmu_gather.c:256 [inline]\ntlb_flush_mmu+0x5b2/0x640 mm/mmu_gather.c:263\ntlb_finish_mmu+0x86/0x100 mm/mmu_gather.c:363\nexit_mmap+0x190/0x4d0 mm/mmap.c:3098\n__mmput+0x27/0x1b0 kernel/fork.c:1185\nmmput+0x3d/0x50 kernel/fork.c:1207\ncopy_process+0x19fc/0x2100 kernel/fork.c:2518\nkernel_clone+0x166/0x550 kernel/fork.c:2671\n__do_sys_clone kernel/fork.c:2812 [inline]\n__se_sys_clone kernel/fork.c:2796 [inline]\n__x64_sys_clone+0xc3/0xf0 kernel/fork.c:2796\ndo_syscall_x64 arch/x86/entry/common.c:50 [inline]\ndo_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80\nentry_SYSCALL_64_after_hwframe+0x63/0xcd\n\nread to 0xffffea00058fc1c8 of 8 bytes by task 17325 on cpu 1:\npage_is_pfmemalloc include/linux/mm.h:1817 [inline]\n__skb_fill_page_desc include/linux/skbuff.h:2432 [inline]\nskb_fill_page_desc include/linux/skbuff.h:2453 [inline]\nskb_append_pagefrags+0x210/0x600 net/core/skbuff.c:3974\nunix_stream_sendpage+0x45e/0x990 net/unix/af_unix.c:2338\nkernel_sendpage+0x184/0x300 net/socket.c:3561\nsock_sendpage+0x5a/0x70 net/socket.c:1054\npipe_to_sendpage+0x128/0x160 fs/splice.c:361\nsplice_from_pipe_feed fs/splice.c:415 [inline]\n__splice_from_pipe+0x222/0x4d0 fs/splice.c:559\nsplice_from_pipe fs/splice.c:594 [inline]\ngeneric_splice_sendpage+0x89/0xc0 fs/splice.c:743\ndo_splice_from fs/splice.c:764 [inline]\ndirect_splice_actor+0x80/0xa0 fs/splice.c:931\nsplice_direct_to_actor+0x305/0x620 fs/splice.c:886\ndo_splice_direct+0xfb/0x180 fs/splice.c:974\ndo_sendfile+0x3bf/0x910 fs/read_write.c:1255\n__do_sys_sendfile64 fs/read_write.c:1323 [inline]\n__se_sys_sendfile64 fs/read_write.c:1309 [inline]\n__x64_sys_sendfile64+0x10c/0x150 fs/read_write.c:1309\ndo_syscall_x64 arch/x86/entry/common.c:50 [inline]\ndo_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80\nentry_SYSCALL_64_after_hwframe+0x63/0xcd\n\nvalue changed: 0x0000000000000000 -> 0xffffea00058fc188\n\nReported by Kernel Concurrency Sanitizer on:\nCPU: 1 PID: 17325 Comm: syz-executor.0 Not tainted 6.1.0-rc1-syzkaller-00158-g440b7895c990-dirty #0\nHardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/11/2022"}],"providerMetadata":{"dateUpdated":"2026-05-23T15:24:16.572Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/92b4c5c3fa810212da20088bcc6c0a77fc8607bd"},{"url":"https://git.kernel.org/stable/c/847a2859814b31392340a2b16604b25afaa92dcc"},{"url":"https://git.kernel.org/stable/c/228ebc41dfab5b5d34cd76835ddb0ca8ee12f513"}],"title":"net: do not sense pfmemalloc status in skb_append_pagefrags()","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2022-50323","datePublished":"2025-09-15T14:48:57.418Z","dateReserved":"2025-09-15T14:18:36.814Z","dateUpdated":"2026-11-05T20:10:35.352Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2025-09-15 15:15:44","lastModifiedDate":"2026-11-05 20:17:34","problem_types":["NVD-CWE-noinfo"],"metrics":{"cvssMetricV31":[{"source":"nvd@nist.gov","type":"Primary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","baseScore":5.5,"baseSeverity":"MEDIUM","attackVector":"LOCAL","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"HIGH"},"exploitabilityScore":1.8,"impactScore":3.6}],"ssvcV203":[{"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","ssvcData":{"timestamp":"2026-11-05T20:09:57.312034Z","id":"CVE-2022-50323","options":[{"exploitation":"none"},{"automatable":"no"},{"technicalImpact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}]},"configurations":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.15.68","versionEndExcluding":"5.15.77","matchCriteriaId":"F9838B2C-7013-4FA9-9A74-DDF6B426182B"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.19.9","versionEndExcluding":"6.0","matchCriteriaId":"C642BB6C-5AE7-4FF1-BFED-4CCC8FC1E127"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.0.1","versionEndExcluding":"6.0.7","matchCriteriaId":"8E5B300B-886E-4B07-B4A0-D7F41770FD29"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:6.0:-:*:*:*:*:*:*","matchCriteriaId":"7BE551E5-89CF-47A8-9B26-03CE727FBA37"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:6.0:rc5:*:*:*:*:*:*","matchCriteriaId":"8E5FB72F-67CE-43CC-83FE-541604D98182"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:6.0:rc6:*:*:*:*:*:*","matchCriteriaId":"3A0A7397-F5F8-4753-82DC-9A11288E696D"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:6.0:rc7:*:*:*:*:*:*","matchCriteriaId":"E6DE049A-ABA8-41DD-988C-8C088358EE9B"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:6.1:rc1:*:*:*:*:*:*","matchCriteriaId":"E7E331DA-1FB0-4DEC-91AC-7DA69D461C11"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:6.1:rc2:*:*:*:*:*:*","matchCriteriaId":"17F0B248-42CF-4AE6-A469-BB1BAE7F4705"}]}]}]},"legacy_mitre":{"record":{"CveYear":"2022","CveId":"50323","Ordinal":"1","Title":"net: do not sense pfmemalloc status in skb_append_pagefrags()","CVE":"CVE-2022-50323","Year":"2022"},"notes":[{"CveYear":"2022","CveId":"50323","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet: do not sense pfmemalloc status in skb_append_pagefrags()\n\nskb_append_pagefrags() is used by af_unix and udp sendpage()\nimplementation so far.\n\nIn commit 326140063946 (\"tcp: TX zerocopy should not sense\npfmemalloc status\") we explained why we should not sense\npfmemalloc status for pages owned by user space.\n\nWe should also use skb_fill_page_desc_noacc()\nin skb_append_pagefrags() to avoid following KCSAN report:\n\nBUG: KCSAN: data-race in lru_add_fn / skb_append_pagefrags\n\nwrite to 0xffffea00058fc1c8 of 8 bytes by task 17319 on cpu 0:\n__list_add include/linux/list.h:73 [inline]\nlist_add include/linux/list.h:88 [inline]\nlruvec_add_folio include/linux/mm_inline.h:323 [inline]\nlru_add_fn+0x327/0x410 mm/swap.c:228\nfolio_batch_move_lru+0x1e1/0x2a0 mm/swap.c:246\nlru_add_drain_cpu+0x73/0x250 mm/swap.c:669\nlru_add_drain+0x21/0x60 mm/swap.c:773\nfree_pages_and_swap_cache+0x16/0x70 mm/swap_state.c:311\ntlb_batch_pages_flush mm/mmu_gather.c:59 [inline]\ntlb_flush_mmu_free mm/mmu_gather.c:256 [inline]\ntlb_flush_mmu+0x5b2/0x640 mm/mmu_gather.c:263\ntlb_finish_mmu+0x86/0x100 mm/mmu_gather.c:363\nexit_mmap+0x190/0x4d0 mm/mmap.c:3098\n__mmput+0x27/0x1b0 kernel/fork.c:1185\nmmput+0x3d/0x50 kernel/fork.c:1207\ncopy_process+0x19fc/0x2100 kernel/fork.c:2518\nkernel_clone+0x166/0x550 kernel/fork.c:2671\n__do_sys_clone kernel/fork.c:2812 [inline]\n__se_sys_clone kernel/fork.c:2796 [inline]\n__x64_sys_clone+0xc3/0xf0 kernel/fork.c:2796\ndo_syscall_x64 arch/x86/entry/common.c:50 [inline]\ndo_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80\nentry_SYSCALL_64_after_hwframe+0x63/0xcd\n\nread to 0xffffea00058fc1c8 of 8 bytes by task 17325 on cpu 1:\npage_is_pfmemalloc include/linux/mm.h:1817 [inline]\n__skb_fill_page_desc include/linux/skbuff.h:2432 [inline]\nskb_fill_page_desc include/linux/skbuff.h:2453 [inline]\nskb_append_pagefrags+0x210/0x600 net/core/skbuff.c:3974\nunix_stream_sendpage+0x45e/0x990 net/unix/af_unix.c:2338\nkernel_sendpage+0x184/0x300 net/socket.c:3561\nsock_sendpage+0x5a/0x70 net/socket.c:1054\npipe_to_sendpage+0x128/0x160 fs/splice.c:361\nsplice_from_pipe_feed fs/splice.c:415 [inline]\n__splice_from_pipe+0x222/0x4d0 fs/splice.c:559\nsplice_from_pipe fs/splice.c:594 [inline]\ngeneric_splice_sendpage+0x89/0xc0 fs/splice.c:743\ndo_splice_from fs/splice.c:764 [inline]\ndirect_splice_actor+0x80/0xa0 fs/splice.c:931\nsplice_direct_to_actor+0x305/0x620 fs/splice.c:886\ndo_splice_direct+0xfb/0x180 fs/splice.c:974\ndo_sendfile+0x3bf/0x910 fs/read_write.c:1255\n__do_sys_sendfile64 fs/read_write.c:1323 [inline]\n__se_sys_sendfile64 fs/read_write.c:1309 [inline]\n__x64_sys_sendfile64+0x10c/0x150 fs/read_write.c:1309\ndo_syscall_x64 arch/x86/entry/common.c:50 [inline]\ndo_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80\nentry_SYSCALL_64_after_hwframe+0x63/0xcd\n\nvalue changed: 0x0000000000000000 -> 0xffffea00058fc188\n\nReported by Kernel Concurrency Sanitizer on:\nCPU: 1 PID: 17325 Comm: syz-executor.0 Not tainted 6.1.0-rc1-syzkaller-00158-g440b7895c990-dirty #0\nHardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/11/2022","Type":"Description","Title":"net: do not sense pfmemalloc status in skb_append_pagefrags()"}]}}}