[Wed Jan 21 08:23:27 UTC 2026] respawn: 0: starting: /data/bpftrace/sys_write_delay.sh + pidof osmo-bts-trx + bpftrace --no-warnings /data/bpftrace/sys_write_delay.bt -p 9 osmo-bts-trx ERROR: No BTF found for shmem_file_write_iter. ERROR: Unable to attach probe: fentry:shmem_file_write_iter. If this is expected, set the 'missing_probes' config variable to 'warn'. lsof output: maps output: cat: /proc/27/maps: No such file or directory [Wed Jan 21 08:23:32 UTC 2026] respawn: 0: stopped pid 27 with status 255 [Wed Jan 21 08:23:32 UTC 2026] respawn: sleeping 1 seconds... [Wed Jan 21 08:23:33 UTC 2026] respawn: 1: starting: /data/bpftrace/sys_write_delay.sh + pidof osmo-bts-trx + bpftrace --no-warnings /data/bpftrace/sys_write_delay.bt -p 9 osmo-bts-trx ERROR: No BTF found for shmem_file_write_iter. ERROR: Unable to attach probe: fentry:shmem_file_write_iter. If this is expected, set the 'missing_probes' config variable to 'warn'. lsof output: maps output: cat: /proc/61/maps: No such file or directory [Wed Jan 21 08:23:38 UTC 2026] respawn: 1: stopped pid 61 with status 255 [Wed Jan 21 08:23:38 UTC 2026] respawn: sleeping 1 seconds... [Wed Jan 21 08:23:39 UTC 2026] respawn: 2: starting: /data/bpftrace/sys_write_delay.sh + pidof osmo-bts-trx + bpftrace --no-warnings /data/bpftrace/sys_write_delay.bt -p 9 osmo-bts-trx ERROR: No BTF found for shmem_file_write_iter. ERROR: Unable to attach probe: fentry:shmem_file_write_iter. If this is expected, set the 'missing_probes' config variable to 'warn'. lsof output: maps output: cat: /proc/80/maps: No such file or directory [Wed Jan 21 08:23:44 UTC 2026] respawn: 2: stopped pid 80 with status 255 [Wed Jan 21 08:23:44 UTC 2026] respawn: sleeping 1 seconds... [Wed Jan 21 08:23:45 UTC 2026] respawn: 3: starting: /data/bpftrace/sys_write_delay.sh + pidof osmo-bts-trx + bpftrace --no-warnings /data/bpftrace/sys_write_delay.bt -p 9 osmo-bts-trx Terminated