KCSAN: data-race in nci_dev_up / nci_req

ID	Workflow	Result	Correct	Bug	Created	Started	Finished	Revision	Error
e9f2ea1a-4b36-477c-9cdd-24956bc89c91	assessment-kcsan	Benign: ✅ Confident: ✅	❓	KCSAN: data-race in nci_dev_up / nci_req_complete (5)	2026/02/24 19:00	2026/02/24 19:00	2026/02/24 19:11	305c0ec5cd886e2d13738e28e1b2df9b0ec20fc9
5dfb3376-a16c-4146-9042-5206c91a4263	assessment-kcsan		💥	KCSAN: data-race in nci_dev_up / nci_req_complete (5)	2026/01/09 23:46	2026/01/09 23:46	2026/01/10 00:02	7519916073b761ced56a7b15fdeeb4674e8dc125	Error 429, Message: You exceeded your current quota, please check your plan and billing details. For more information on this error, head to: https://ai.google.dev/gemini-api/docs/rate-limits. To monitor your current usage, head to: https://ai.dev/rate-limit. * Quota exceeded for metric: generativelanguage.googleapis.com/generate_requests_per_model_per_day, limit: 0, Status: RESOURCE_EXHAUSTED, Details: [map[@type:type.googleapis.com/google.rpc.Help links:[map[description:Learn more about Gemini API quotas url:https://ai.google.dev/gemini-api/docs/rate-limits]]] map[@type:type.googleapis.com/google.rpc.QuotaFailure violations:[map[quotaId:GenerateRequestsPerDayPerProjectPerModel quotaMetric:generativelanguage.googleapis.com/generate_requests_per_model_per_day]]] map[@type:type.googleapis.com/google.rpc.DebugInfo detail:[ORIGINAL ERROR] generic::resource_exhausted: You exceeded your current quota, please check your plan and billing details. For more information on this error, head to: https://ai.google.dev/gemini-api/docs/rate-limits. To monitor your current usage, head to: https://ai.dev/rate-limit. * Quota exceeded for metric: generativelanguage.googleapis.com/generate_requests_per_model_per_day, limit: 0 [google.rpc.error_details_ext] { message: "You exceeded your current quota, please check your plan and billing details. For more information on this error, head to: https://ai.google.dev/gemini-api/docs/rate-limits. To monitor your current usage, head to: https://ai.dev/rate-limit. \n* Quota exceeded for metric: generativelanguage.googleapis.com/generate_requests_per_model_per_day, limit: 0" details { type_url: "type.googleapis.com/language_labs.genai.debug.GeminiApiDebugInfo" value: "RM\nK\nEgenerativelanguage.googleapis.com/generate_requests_per_model_per_day\030\000\"\000" } details { [type.googleapis.com/google.rpc.Help] { links { description: "Learn more about Gemini API quotas" url: "https://ai.google.dev/gemini-api/docs/rate-limits" } } } details { [type.googleapis.com/google.rpc.QuotaFailure] { violations { quota_metric: "generativelanguage.googleapis.com/generate_requests_per_model_per_day" quota_id: "GenerateRequestsPerDayPerProjectPerModel" } } } }]]

Kernel	Title	Rank 🛈	Count	Last	Reported	Patched	Status
upstream	KCSAN: data-race in nci_dev_up / nci_req_complete (2) net nfc	6	1	855d	855d	0/29	auto-obsoleted due to no activity on 2023/12/02 10:14
upstream	KCSAN: data-race in nci_dev_up / nci_req_complete nfc net	6	1	968d	968d	0/29	auto-obsoleted due to no activity on 2023/08/11 03:41
upstream	KCSAN: data-race in nci_dev_up / nci_req_complete (4) net nfc	6	2	720d	720d	0/29	auto-obsoleted due to no activity on 2024/04/14 23:38
upstream	KCSAN: data-race in nci_dev_up / nci_req_complete (3) net nfc	6	2	783d	797d	0/29	auto-obsoleted due to no activity on 2024/02/11 16:39

Kernel

Title

Rank 🛈

upstream

KCSAN: data-race in nci_dev_up / nci_req_complete (2) net nfc

855d

0/29

auto-obsoleted due to no activity on 2023/12/02 10:14

upstream

KCSAN: data-race in nci_dev_up / nci_req_complete nfc net

968d

0/29

auto-obsoleted due to no activity on 2023/08/11 03:41

upstream

KCSAN: data-race in nci_dev_up / nci_req_complete (4) net nfc

720d

0/29

auto-obsoleted due to no activity on 2024/04/14 23:38

upstream

KCSAN: data-race in nci_dev_up / nci_req_complete (3) net nfc

783d

797d

0/29

auto-obsoleted due to no activity on 2024/02/11 16:39

================================================================== BUG: KCSAN: data-race in nci_dev_up / nci_req_complete write to 0xffff88811bfb69a0 of 4 bytes by task 6091 on cpu 1: __nci_request net/nfc/nci/core.c:136 [inline] nci_open_device net/nfc/nci/core.c:503 [inline] nci_dev_up+0x272/0x8f0 net/nfc/nci/core.c:632 nfc_dev_up+0x103/0x1b0 net/nfc/core.c:118 nfc_genl_dev_up+0x53/0x90 net/nfc/netlink.c:775 genl_family_rcv_msg_doit+0x143/0x1b0 net/netlink/genetlink.c:1115 genl_family_rcv_msg net/netlink/genetlink.c:1195 [inline] genl_rcv_msg+0x422/0x460 net/netlink/genetlink.c:1210 netlink_rcv_skb+0x123/0x220 net/netlink/af_netlink.c:2550 genl_rcv+0x28/0x40 net/netlink/genetlink.c:1219 netlink_unicast_kernel net/netlink/af_netlink.c:1318 [inline] netlink_unicast+0x5c0/0x690 net/netlink/af_netlink.c:1344 netlink_sendmsg+0x58b/0x6b0 net/netlink/af_netlink.c:1894 sock_sendmsg_nosec net/socket.c:727 [inline] __sock_sendmsg+0x145/0x180 net/socket.c:742 ____sys_sendmsg+0x31e/0x4a0 net/socket.c:2592 ___sys_sendmsg+0x17b/0x1d0 net/socket.c:2646 __sys_sendmsg net/socket.c:2678 [inline] __do_sys_sendmsg net/socket.c:2683 [inline] __se_sys_sendmsg net/socket.c:2681 [inline] __x64_sys_sendmsg+0xd4/0x160 net/socket.c:2681 x64_sys_call+0x17ba/0x3000 arch/x86/include/generated/asm/syscalls_64.h:47 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xca/0x2b0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f read to 0xffff88811bfb69a0 of 4 bytes by task 2331 on cpu 0: nci_req_complete+0x23/0x90 net/nfc/nci/core.c:80 nci_rsp_packet+0xc6f/0xe30 net/nfc/nci/rsp.c:-1 nci_rx_work+0x16f/0x2c0 net/nfc/nci/core.c:1551 process_one_work kernel/workqueue.c:3257 [inline] process_scheduled_works+0x4ce/0x9d0 kernel/workqueue.c:3340 worker_thread+0x582/0x770 kernel/workqueue.c:3421 kthread+0x489/0x510 kernel/kthread.c:463 ret_from_fork+0x149/0x290 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:246 value changed: 0x00000000 -> 0x00000001 Reported by Kernel Concurrency Sanitizer on: CPU: 0 UID: 0 PID: 2331 Comm: kworker/u8:13 Not tainted syzkaller #0 PREEMPT(voluntary) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 Workqueue: nfc2_nci_rx_wq nci_rx_work ==================================================================

Crashes (1):
Time	Kernel	Commit	Syzkaller	Config	Log	Report	Syz repro	C repro	VM info	Assets (help?)	Manager	Title
2026/01/04 10:42	upstream	aacb0a6d604a	d6526ea3	.config	console log	report			info	[disk image] [vmlinux] [kernel image]	ci2-upstream-kcsan-gce	KCSAN: data-race in nci_dev_up / nci_req_complete

Crashes (1):

Assets (help?)