[<0>] signalfd_read+0x16e/0x200
[<0>] vfs_read+0x98/0x190
[<0>] ksys_read+0x53/0xd0
[<0>] do_syscall_64+0x58/0x80
[<0>] entry_SYSCALL_64_after_hwframe+0x63/0xcd
