Public issue detail

Runaway CPU investigation for sshd-session: unknown userspace loop at ktime_get_ts64

sshd-session is stuck in a likely unclassified userspace loop: 34.73% of sampled CPU passed through ktime_get_ts64, with repeated thread backtraces show 1 thread(s) around 0x00007f7d46c9a7d2 in ?? () from target:<path>.

highpackage: openssh-serversource: opensshscore: 106reports: 1

Last seen: 2026-06-03 16:50 UTC. Public JSON: /v1/issues/019e8d97-3b25-7c93-b1fd-4d3a7e3edefa

Technical snapshot

This is the clearest retained userspace thread cluster Fixer captured while the process was spinning.

Representative thread backtrace

Command: sshd-session: gis [priv]
Why Fixer classified it this way: The process is demonstrably CPU-hot, but the current syscall and symbol sample does not point to a single dominant loop family yet.
Thread summary: thread backtraces show 1 thread(s) around 0x00007f7d46c9a7d2 in ?? () from target:<path>
Contention signals: event-loop-wakeups, gdb-stderr: gdb: warning: Couldn't determine a path for the index cache directory.
Repeated loop: restart_syscall
Top syscalls: restart_syscall x1
Package: openssh-server 1:10.3p1-1
Kernel: 6.17.10+deb14-amd64
Distribution: debian

0x00007f7d46c9a7d2 in ?? () from target:<path>
0x00007f7d46c9a7ed in ?? () from target:<path>
0x00007f7d46d0fd76 in poll () from target:<path>
0x0000559f19b71f15 in ?? ()
0x0000559f19b74264 in ?? ()
0x0000559f19b4cd0e in ?? ()
0x00007f7d46c31f77 in ?? () from target:<path>
0x00007f7d46c32027 in __libc_start_main () from target:<path>

Possible duplicates

These are suggestions based on sanitized trigram similarity plus structured fields like package, subsystem, classification, and wait site. They are not auto-merged.

Runaway CPU investigation for sshd-session: unknown userspace loop at unresolved offset in libc.so.6

possible duplicate

sshd-session is stuck in a likely unclassified userspace loop: 19.66% of sampled CPU passed through unresolved offset, with repeated thread backtraces show 1 thread(s) around 0x00007f68c0e9a7d2 in ?? () from target:<path>.

highpackage: openssh-serversource: opensshscore: 106reports: 2similarity: 99%

Why this looks related: same classification, same package, same source package, same subsystem, same target, same wait site

Last seen: 2026-06-07 21:04 UTC. Public page: /issues/019db544-ab14-73a0-b91c-7276539c4cf4. Public JSON: /v1/issues/019db544-ab14-73a0-b91c-7276539c4cf4

Runaway CPU investigation for sshd-session: unknown userspace loop at unresolved offset in ld-linux-x86-64.so.2

possible duplicate

sshd-session is stuck in a likely unclassified userspace loop: 19.96% of sampled CPU passed through unresolved offset, with repeated thread backtraces show 1 thread(s) around 0x00007f6cc509a7d2 in ?? () from target:<path>.

highpackage: openssh-serversource: opensshscore: 106reports: 1similarity: 99%

Why this looks related: same classification, same package, same source package, same subsystem, same target, same wait site

Last seen: 2026-06-10 05:31 UTC. Public page: /issues/019eaf7a-f4e0-7222-a6a7-9e5e24788c96. Public JSON: /v1/issues/019eaf7a-f4e0-7222-a6a7-9e5e24788c96

Runaway CPU investigation for sshd-session: unknown userspace loop at unresolved offset in libpam_misc.so.0.82.1

possible duplicate

sshd-session is stuck in a likely unclassified userspace loop: 22.04% of sampled CPU passed through unresolved offset, with repeated thread backtraces show 1 thread(s) around 0x00007f97df09a7d2 in ?? () from target:<path>.

highpackage: openssh-serversource: opensshscore: 106reports: 1similarity: 99%

Why this looks related: same classification, same package, same source package, same subsystem, same target, same wait site

Last seen: 2026-06-10 02:43 UTC. Public page: /issues/019ea95e-8037-7fa1-8a43-e6761943059e. Public JSON: /v1/issues/019ea95e-8037-7fa1-8a43-e6761943059e

Runaway CPU investigation for sshd-session: unknown userspace loop at xas_find

possible duplicate

sshd-session is stuck in a likely unclassified userspace loop: 27.43% of sampled CPU passed through xas_find, with repeated thread backtraces show 1 thread(s) around 0x00007f97df09a7d2 in ?? () from target:<path>.

highpackage: openssh-serversource: opensshscore: 106reports: 1similarity: 99%

Why this looks related: same classification, same package, same source package, same subsystem, same target, same wait site, very similar public summary

Last seen: 2026-06-08 22:14 UTC. Public page: /issues/019ea896-8735-7d91-84b8-38102d5ba77f. Public JSON: /v1/issues/019ea896-8735-7d91-84b8-38102d5ba77f

Runaway CPU investigation for sshd-session: unknown userspace loop at copy_page_range

possible duplicate

sshd-session is stuck in a likely unclassified userspace loop: 16.65% of sampled CPU passed through copy_page_range, with repeated thread backtraces show 1 thread(s) around 0x00007f9aee09a7d2 in ?? () from target:<path>.

highpackage: openssh-serversource: opensshscore: 106reports: 1similarity: 99%

Why this looks related: same classification, same package, same source package, same subsystem, same target, same wait site

Last seen: 2026-06-08 18:36 UTC. Public page: /issues/019e676a-fef9-72e2-b67e-a26d1e8f0674. Public JSON: /v1/issues/019e676a-fef9-72e2-b67e-a26d1e8f0674

Runaway CPU investigation for sshd-session: unknown userspace loop at _raw_write_unlock_bh

possible duplicate

sshd-session is stuck in a likely unclassified userspace loop: 21.47% of sampled CPU passed through _raw_write_unlock_bh, with repeated thread backtraces show 1 thread(s) around 0x00007f68c0e9a7d2 in ?? () from target:<path>.

highpackage: openssh-serversource: opensshscore: 106reports: 1similarity: 99%

Why this looks related: same classification, same package, same source package, same subsystem, same target, same wait site

Last seen: 2026-06-08 03:15 UTC. Public page: /issues/019ea3f7-fd44-7bc0-be26-cb07d069a2cf. Public JSON: /v1/issues/019ea3f7-fd44-7bc0-be26-cb07d069a2cf

Published attempts

No public attempts have been published for this issue yet.