Messages in this thread |  | | | Date | Fri, 30 Jun 2006 15:45:53 -0700 | | From | "Miles Lane" <> | | Subject | Re: [patch] lockdep, annotate slocks: turn lockdep off for them |
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Okay, I rebuilt my kernel with your combo patch applied. Then, I inserted my US Robotics USR2210 PCMCIA wifi card, ran "pccardutil eject", popped out the card and then inserted a Compaq iPaq wifi card. This triggered the following.
[ INFO: possible circular locking dependency detected ] ------------------------------------------------------- syslogd/1886 is trying to acquire lock: (&dev->queue_lock){-+..}, at: [<c11a50b5>] dev_queue_xmit+0x120/0x24b but task is already holding lock: (&dev->_xmit_lock){-+..}, at: [<c11a5118>] dev_queue_xmit+0x183/0x24b which lock already depends on the new lock.
the existing dependency chain (in reverse order) is:
-> #1 (&dev->_xmit_lock){-+..}: [<c102d1b6>] lock_acquire+0x60/0x80 [<c12013ed>] _spin_lock_bh+0x28/0x37 [<c11b0045>] dev_activate+0xce/0x100 [<c11a42e7>] dev_open+0x4c/0x64 [<c11a2e44>] dev_change_flags+0x51/0xf1 [<c11ab07d>] do_setlink+0x73/0x312 [<c11aadcc>] rtnetlink_rcv_msg+0x1ae/0x1d1 [<c11b5c91>] netlink_run_queue+0x69/0x100 [<c11aabd4>] rtnetlink_rcv+0x29/0x42 [<c11b6104>] netlink_data_ready+0x12/0x4f [<c11b4f51>] netlink_sendskb+0x1f/0x50 [<c11b5a42>] netlink_unicast+0x1b4/0x1ce [<c11b60e5>] netlink_sendmsg+0x259/0x266 [<c1199c7a>] sock_sendmsg+0xe8/0x103 [<c119a2a5>] sys_sendmsg+0x14f/0x1aa [<c119b5e3>] sys_socketcall+0x16b/0x186 [<c1002d6d>] sysenter_past_esp+0x56/0x8d -> #0 (&dev->queue_lock){-+..}: [<c102d1b6>] lock_acquire+0x60/0x80 [<c12013b6>] _spin_lock+0x23/0x32 [<c11a50b5>] dev_queue_xmit+0x120/0x24b [<f948379e>] hostap_data_start_xmit+0x610/0x61a [hostap] [<c11a371d>] dev_hard_start_xmit+0x206/0x212 [<c11a5134>] dev_queue_xmit+0x19f/0x24b [<f939c7c9>] mld_sendpack+0x1a0/0x26a [ipv6] [<f939d3a3>] mld_ifc_timer_expire+0x1d6/0x1fd [ipv6] [<c101db26>] run_timer_softirq+0xf2/0x14a [<c101a709>] __do_softirq+0x55/0xb0 [<c1004a64>] do_softirq+0x58/0xbd other info that might help us debug this:
4 locks held by syslogd/1886: #0: (&inode->i_mutex){--..}, at: [<c120028e>] mutex_lock+0x1c/0x1f #1: (&journal->j_state_lock){--..}, at: [<c10aee62>] journal_stop+0x109/0x1f8 #2: (&transaction->t_handle_lock){--..}, at: [<c10aee6c>] journal_stop+0x113/0x1f8 #3: (&dev->_xmit_lock){-+..}, at: [<c11a5118>] dev_queue_xmit+0x183/0x24b stack backtrace: [<c1003502>] show_trace_log_lvl+0x54/0xfd [<c1003b6a>] show_trace+0xd/0x10 [<c1003c0e>] dump_stack+0x19/0x1b [<c102c576>] print_circular_bug_tail+0x59/0x64 [<c102cd5c>] __lock_acquire+0x7db/0x970 [<c102d1b6>] lock_acquire+0x60/0x80 [<c12013b6>] _spin_lock+0x23/0x32 [<c11a50b5>] dev_queue_xmit+0x120/0x24b [<f948379e>] hostap_data_start_xmit+0x610/0x61a [hostap] [<c11a371d>] dev_hard_start_xmit+0x206/0x212 [<c11a5134>] dev_queue_xmit+0x19f/0x24b [<f939c7c9>] mld_sendpack+0x1a0/0x26a [ipv6] [<f939d3a3>] mld_ifc_timer_expire+0x1d6/0x1fd [ipv6] [<c101db26>] run_timer_softirq+0xf2/0x14a [<c101a709>] __do_softirq+0x55/0xb0 [<c1004a64>] do_softirq+0x58/0xbd [<c101a6a8>] irq_exit+0x3f/0x4b [<c1004b89>] do_IRQ+0xc0/0xcf [<c1002fd9>] common_interrupt+0x25/0x2c
On 6/30/06, Ingo Molnar <mingo@elte.hu> wrote: > > * Miles Lane <miles.lane@gmail.com> wrote: > > > I cannot get this patch to apply cleanly to 2.6.17-mm4. Since the > > patch listed in this message covers the same files as your previous > > lockdep-annotate-slock.patch, I am assuming this is supposed to > > replace it. I should also still apply > > lockdep-core-add-set-class-and-name.patch, correct? > > correct. My latest combo patch has it all included, it's at: > > http://redhat.com/~mingo/lockdep-patches/lockdep-combo-2.6.17-mm4.patch > > could you try that one? > > Ingo > - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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