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Date: Tue, 6 Feb 2007 13:01:55 -0800 From: [EMAIL PROTECTED] To: [EMAIL PROTECTED] Subject: [Bugme-new] [Bug 7952] New: slattach only works every other time http://bugzilla.kernel.org/show_bug.cgi?id=7952 Summary: slattach only works every other time Kernel Version: 2.6.18 Status: NEW Severity: normal Owner: [EMAIL PROTECTED] Submitter: [EMAIL PROTECTED] Most recent kernel where this bug did *NOT* occur:2.6.16 Distribution:Debian Etch Hardware Environment: x86 with serial port (including qemu) Software Environment: slattach Problem Description: First time slattach is run to set up a SLIP line all is ok. If slattach process is then killed and restarted it fails with message: SLIP_set_disc(1): File exists Problem still occurs in 2.6.20rc6 kernel dmesg shows: object_add failed for sl0 with -EEXIST, don't try to register things with the same name in the same directory. [<c01b7b54>] kobject_add+0x147/0x16d [<c0211209>] class_device_add+0x9d/0x3b3 [<c022829d>] register_netdevice+0x21a/0x2d0 [<c8903213>] slip_open+0x3a1/0x4e2 [slip] [<c01fc709>] tty_ioctl+0x922/0xbac [<c0117778>] default_wake_function+0x0/0xc [<c01fd4bd>] n_tty_open+0x0/0x88 [<c01fd498>] n_tty_close+0x0/0x25 [<c01fd3ae>] n_tty_flush_buffer+0x0/0x3b [<c01fd2ab>] n_tty_chars_in_buffer+0x0/0x5b [<c01fe5eb>] read_chan+0x0/0x551 [<c01fd545>] write_chan+0x0/0x294 [<c01fef41>] n_tty_ioctl+0x0/0x40d [<c01fd082>] n_tty_set_termios+0x0/0x1cc [<c01fe4d2>] normal_poll+0x0/0x119 [<c01fd7d9>] n_tty_receive_buf+0x0/0xcf9 [<c01fd24e>] n_tty_write_wakeup+0x0/0x27 [<c88b2474>] parport_pc_interrupt+0x1a/0x42 [parport_pc] [<c013fb83>] handle_IRQ_event+0x23/0x49 [<c013fc5c>] __do_IRQ+0xb3/0xe8 [<c013fc80>] __do_IRQ+0xd7/0xe8 [<c0130170>] hrtimer_run_queues+0xcf/0x157 [<c016937b>] do_ioctl+0x47/0x5d [<c01695db>] vfs_ioctl+0x24a/0x25c [<c0121c58>] tasklet_action+0x55/0xaf [<c0169635>] sys_ioctl+0x48/0x5f [<c0102c11>] sysenter_past_esp+0x56/0x79 Steps to reproduce: (requires a serial port but nothing needs to be attached to it): # slattach -L -vd -p slip -s 115200 /dev/ttyS0 slattach: tty_open: looking for lock slattach: tty_open: trying to open /dev/ttyS0 slattach: tty_open: /dev/ttyS0 (fd=3) slattach: tty_set_speed: 115200 slattach: tty_set_databits: 8 slattach: tty_set_stopbits: 1 slattach: tty_set_parity: N slip started on /dev/ttyS0 interface sl0 Above is OK, now kill process with CTRL-C slattach: tty_set_speed: 0 # slattach -L -vd -p slip -s 115200 /dev/ttyS0 slattach: tty_open: looking for lock slattach: tty_open: trying to open /dev/ttyS0 slattach: tty_open: /dev/ttyS0 (fd=3) slattach: tty_set_speed: 115200 slattach: tty_set_databits: 8 slattach: tty_set_stopbits: 1 slattach: tty_set_parity: N SLIP_set_disc(1): File exists # dmesg Gives trace shown above I believe this is called by this changeset : http://www2.kernel.org/git/?p=linux/kernel/git/stable/linux-2.6.17.y.git;a=commit;h=b17a7c179dd3ce7d04373fddf660eda21efc9db9 Regards, Martin ------- You are receiving this mail because: ------- You are on the CC list for the bug, or are watching someone who is. - To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html
