Hi,
after rebasing bpf-next to the latest net-next.
I consistently see the following while running
test_progs -t attach_probe/manual-default
[ 28.638654] WARNING: CPU: 1 PID: 2135 at kernel/events/core.c:1950
__do_sys_perf_event_open+0x14e0/0x15b0
[ 28.639329] Modules linked in: bpf_testmod(O)
[ 28.639632] CPU: 1 PID: 2135 Comm: test_progs Tainted: G
O 6.7.0-rc5-01520-gc337f237291b #5281
[ 28.640299] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996),
BIOS rel-1.12.0-59-gc9ba5276e321-prebuilt.qemu.org 04/01/2014
[ 28.641062] RIP: 0010:__do_sys_perf_event_open+0x14e0/0x15b0
[ 28.647751] Call Trace:
[ 28.647919] <TASK>
[ 28.648082] ? __warn+0xa1/0x1f0
[ 28.648311] ? __do_sys_perf_event_open+0x14e0/0x15b0
[ 28.648641] ? report_bug+0x1fa/0x230
[ 28.648902] ? handle_bug+0x3c/0x70
[ 28.649164] ? exc_invalid_op+0x17/0x40
[ 28.649416] ? asm_exc_invalid_op+0x1a/0x20
[ 28.649699] ? entry_SYSCALL_64_after_hwframe+0x46/0x4e
[ 28.650062] ? __do_sys_perf_event_open+0x14e0/0x15b0
[ 28.650406] ? perf_event_set_output+0x2a0/0x2a0
[ 28.650727] ? __audit_syscall_entry+0x4f/0x200
[ 28.651063] do_syscall_64+0x2f/0xa0
[ 28.651306] entry_SYSCALL_64_after_hwframe+0x46/0x4e
[ 28.651635] RIP: 0033:0x7fc0846f752d
[ 28.656060] </TASK>
[ 28.656219] irq event stamp: 413681
[ 28.656461] hardirqs last enabled at (413689):
[<ffffffff81193e67>] console_unlock+0x137/0x140
[ 28.657083] hardirqs last disabled at (413698):
[<ffffffff81193e4c>] console_unlock+0x11c/0x140
[ 28.657663] softirqs last enabled at (413368):
[<ffffffff810c0e89>] irq_exit_rcu+0x99/0xf0
[ 28.658215] softirqs last disabled at (413351):
[<ffffffff810c0e89>] irq_exit_rcu+0x99/0xf0
Line 1950 is
for_each_sibling_event(sibling, group_leader) {
if (__perf_event_read_size(sibling->attr.read_format,
group_leader->nr_siblings +
1) > 16*1024)
return false;
}
Probably a known issue?
