KCSAN: data-race in __tty_hangup / io_file_get

ID	Workflow	Result	Correct	Bug	Created	Started	Finished	Revision	Error
ccdff979-eea4-4523-bcda-7c53e995989a	assessment-kcsan		💥	KCSAN: data-race in __tty_hangup / io_file_get_normal	2026/01/10 01:18	2026/01/10 01:18	2026/01/10 01:37	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" } } } }]]

================================================================== BUG: KCSAN: data-race in __tty_hangup / io_file_get_normal write to 0xffff888103de0d88 of 8 bytes by task 7956 on cpu 0: __tty_hangup+0x1ef/0x540 drivers/tty/tty_io.c:612 tty_vhangup drivers/tty/tty_io.c:691 [inline] tty_ioctl+0x601/0xb80 drivers/tty/tty_io.c:2732 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:597 [inline] __se_sys_ioctl+0xce/0x140 fs/ioctl.c:583 __x64_sys_ioctl+0x43/0x50 fs/ioctl.c:583 x64_sys_call+0x14b0/0x3000 arch/x86/include/generated/asm/syscalls_64.h:17 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xd8/0x2c0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f read to 0xffff888103de0d88 of 8 bytes by task 7953 on cpu 1: io_is_uring_fops io_uring/io_uring.c:3357 [inline] io_file_get_normal+0x3b/0x180 io_uring/io_uring.c:1990 io_assign_file+0x9e/0x200 io_uring/io_uring.c:1767 io_issue_sqe+0x40/0xa80 io_uring/io_uring.c:1812 io_queue_sqe io_uring/io_uring.c:2042 [inline] io_submit_sqe io_uring/io_uring.c:2320 [inline] io_submit_sqes+0x78b/0x11b0 io_uring/io_uring.c:2434 __do_sys_io_uring_enter io_uring/io_uring.c:3280 [inline] __se_sys_io_uring_enter+0x1bd/0x1a30 io_uring/io_uring.c:3219 __x64_sys_io_uring_enter+0x78/0x90 io_uring/io_uring.c:3219 x64_sys_call+0x27e4/0x3000 arch/x86/include/generated/asm/syscalls_64.h:427 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xd8/0x2c0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f value changed: 0xffffffff858a6020 -> 0xffffffff858a5f10 Reported by Kernel Concurrency Sanitizer on: CPU: 1 UID: 0 PID: 7953 Comm: syz.3.1130 Tainted: G W syzkaller #0 PREEMPT(voluntary) Tainted: [W]=WARN Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 ==================================================================

Crashes (1):
Time	Kernel	Commit	Syzkaller	Config	Log	Report	Syz repro	C repro	VM info	Assets (help?)	Manager	Title
2025/12/20 03:20	upstream	dd9b004b7ff3	d6526ea3	.config	console log	report			info	[disk image] [vmlinux] [kernel image]	ci2-upstream-kcsan-gce	KCSAN: data-race in __tty_hangup / io_file_get_normal

Crashes (1):

Assets (help?)