[Bug 1191519] bpfilter: read fail on suspend
https://bugzilla.suse.com/show_bug.cgi?id=1191519
https://bugzilla.suse.com/show_bug.cgi?id=1191519#c4
Jiri Slaby
Freezing user space processes ... bpfilter: read fail -512
Freezing of tasks failed after 20.003 seconds (1 tasks refusing to freeze, wq_busy=0): task:xtables-legacy- state:D stack:0 pid:9782 ppid:9781 flags:0x00004006 Call Trace: <TASK> __schedule+0x360/0x1350 schedule+0x5a/0xd0 shutdown_umh+0x7d/0xcc [bpfilter edf9c52c8eee3a505298e3d0d1a17423bd74c763] bpfilter_send_req.cold+0x14/0x2f [bpfilter edf9c52c8eee3a505298e3d0d1a17423bd74c763] bpfilter_process_sockopt+0x57/0x80 [bpfilter edf9c52c8eee3a505298e3d0d1a17423bd74c763] bpfilter_mbox_request+0x84/0x130 ip_getsockopt+0x9b/0xf0 __sys_getsockopt+0xad/0x1b0 __x64_sys_getsockopt+0x1b/0x30 do_syscall_64+0x5b/0x80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f828a7c33fe RSP: 002b:00007ffec6528e18 EFLAGS: 00000246 ORIG_RAX: 0000000000000037 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f828a7c33fe RDX: 0000000000000040 RSI: 0000000000000000 RDI: 0000000000000004 RBP: 0000000000000004 R08: 00007ffec6528e50 R09: 0000000000004000 R10: 00007ffec6528e60 R11: 0000000000000246 R12: 0000000000000000 R13: 000055c3d3350f8e R14: 00007ffec6528e60 R15: 00007ffec652ae86 </TASK>
Looks like task xtables-legacy blocks suspend until it times out and fails after 20 seconds.
It's likely xtables-legacy-multi doing getsockopt. And bpfilter trying to wait for umh process group. But that doesn't exit during suspend, obviously. -- You are receiving this mail because: You are the assignee for the bug.
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