Dear Linux Kernel Maintainers, I hope this message finds you well.
I am writing to report a potential vulnerability I encountered during testing of the Linux Kernel version v6.15-rc5. Git Commit: 92a09c47464d040866cf2b4cd052bc60555185fb (tag: v6.15-rc5) Bug Location: 0010:perf_trace_buf_update+0x19/0x190 kernel/trace/trace_event_perf.c:429 Bug report: https://hastebin.com/share/udusequyew.bash Complete log: https://hastebin.com/share/ibalexehon.perl Entire kernel config: https://hastebin.com/share/padecilimo.ini Root Cause Analysis: A soft lockup was detected on CPU#0 with the instruction pointer (RIP) stuck in the perf_trace_buf_update() function (at kernel/trace/trace_event_perf.c:429). This function was invoked indirectly as part of the inet6_release() socket cleanup path, during the final phase of socket destruction (__sk_destruct() → sk_prot_free() → tracing path). At present, I have not yet obtained a minimal reproducer for this issue. However, I am actively working on reproducing it, and I will promptly share any additional findings or a working reproducer as soon as it becomes available. Thank you very much for your time and attention to this matter. I truly appreciate the efforts of the Linux kernel community. Best regards, John
