Regression while running LTP tracing on the Linux next-20250604 and next-20250605 the following kernel warnings found on the qemu-riscv64.

Regressions found on qemu-riscv64 - LTP tracing

Regression Analysis: - New regression? Yes - Reproducibility? Yes

First seen on the next-20250604 Good: next-20250603 Bad: next-20250604

Test regression: qemu-riscv64 ltp tracing warning kernel trace trace.c ignore_event

Reported-by: Linux Kernel Functional Testing lkft@linaro.org

## Test error

------------[ cut here ]------------ [ 28.134981] event 'ma_read' has unsafe pointer field 'fn' [ 28.135550] WARNING: CPU: 1 PID: 302 at kernel/trace/trace.c:3823 ignore_event+0x1de/0x1fa [ 28.135609] Modules linked in: drm drm_panel_orientation_quirks backlight configfs ip_tables x_tables [ 28.135937] CPU: 1 UID: 0 PID: 302 Comm: cat Not tainted 6.15.0-next-20250604 #1 NONE [ 28.135973] Hardware name: riscv-virtio,qemu (DT) [ 28.136072] epc : ignore_event+0x1de/0x1fa [ 28.136115] ra : ignore_event+0x1de/0x1fa [ 28.136147] epc : ffffffff80151ca4 ra : ffffffff80151ca4 sp : ff200000006ebbe0 [ 28.136164] gp : ffffffff81c61428 tp : ff60000084efd100 t0 : ff200000006eb9b8 [ 28.136181] t1 : ffffffffffffe000 t2 : 205b2d2d2d2d2d2d s0 : ff200000006ebc50 [ 28.136197] s1 : ff60000080066150 a0 : 000000000000002d a1 : ff6000008103e730 [ 28.136213] a2 : ff600000fffcd980 a3 : ffffffff80104e22 a4 : 0000000000000000 [ 28.136229] a5 : 0000000000000000 a6 : 000000000000003a a7 : 0000000000000a00 [ 28.136245] s2 : ffffffff81801608 s3 : ff60000087cd8078 s4 : ffffffff81bebe70 [ 28.136262] s5 : ff60000087cda090 s6 : ff60000087cda054 s7 : ff60000087f9ea40 [ 28.136278] s8 : ffffffff81200000 s9 : ffffffff81800000 s10: ffffffff81bfa290 [ 28.136294] s11: ff60000087cdc000 t3 : ffffffff81c615d8 t4 : ffffffff8001f8e0 [ 28.136321] t5 : ffffffff8014156c t6 : ff200000006eb9b8 [ 28.136337] status: 0000000200000120 badaddr: ffffffff80151ca4 cause: 0000000000000003 [ 28.136395] [<ffffffff80151ca4>] ignore_event+0x1de/0x1fa [ 28.136456] [<ffffffff80157548>] trace_event_printf+0x46/0x88 [ 28.136471] [<ffffffff80d2d54c>] trace_raw_output_ma_read+0x5e/0x7a [ 28.136489] [<ffffffff801530f6>] print_trace_line+0x1c2/0x438 [ 28.136506] [<ffffffff80153948>] tracing_read_pipe+0x1a2/0x2ee [ 28.136522] [<ffffffff802f3eb8>] vfs_read+0xb0/0x294 [ 28.136538] [<ffffffff802f48ac>] ksys_read+0x78/0xde [ 28.136554] [<ffffffff802f4934>] __riscv_sys_read+0x22/0x2c [ 28.136569] [<ffffffff80d49cd8>] do_trap_ecall_u+0x1ba/0x392 [ 28.136584] [<ffffffff80d56b6e>] handle_exception+0x146/0x152 [ 28.136654] ---[ end trace 0000000000000000 ]---

## Source * Kernel version: 6.15.0-next-20250605 and 6.15.0-next-20250604 * Git tree: https://kernel.googlesource.com/pub/scm/linux/kernel/git/next/linux-next.git * Git sha: 4f27f06ec12190c7c62c722e99ab6243dea81a94 * Toolchain: gcc-13

## Build * Test log: https://qa-reports.linaro.org/api/testruns/28662756/log_file/ * Build link: https://storage.tuxsuite.com/public/linaro/lkft/builds/2y1tW4N08hDuUrUZt7mmM... * Kernel config: https://storage.tuxsuite.com/public/linaro/lkft/builds/2y1tW4N08hDuUrUZt7mmM...

-- Linaro LKFT https://lkft.linaro.org