Latest working kernel version: 2.6.28 Earliest failing kernel version: v2.6.28-6859-gede6f5a Distribution: Ubuntu 8.10 Hardware Environment: Dell XPS M1330 Software Environment: v2.6.28-6859-gede6f5a + this patch (otherwise the iwlwifi driver crashes): diff --git a/drivers/net/wireless/iwlwifi/iwl3945-base.c b/drivers/net/wireless/iwlwifi/iwl3945-base.c index d645808..15f5655 100644 --- a/drivers/net/wireless/iwlwifi/iwl3945-base.c +++ b/drivers/net/wireless/iwlwifi/iwl3945-base.c @@ -745,7 +745,7 @@ static int iwl3945_send_cmd_sync(struct iwl3945_priv *priv, struct iwl3945_host_ IWL_ERROR("Error: Response NULL in '%s'\n", get_cmd_string(cmd->id)); ret = -EIO; - goto out; + goto cancel; } ret = 0; Problem Description: The system was unresponsive after crash, so the chunk of the crash dump was taken by a camera and typed off the picture (attached). No part of the trace was saved in the logs. 00000000fffffff4 0000000000000010 ffff88007b4d3df8 ffffffff80571c7f 2222222222222222 2222222222222222 0000000000000010 0000000000000001 Call Trace: [<ffffffff80267066>] __stop_machine+0xee/0x15d [<ffffffff80......>] _cpu_down+0x184/0x2e8 [<ffffffff80......>] disable_nonboot_cpus+0x7a/0x123 [<ffffffff80......>] kernel_power_off+0x21/0x3b [<ffffffff80......>] sys_reboot+0xe3/0x151 [<ffffffff80......>] ? tty_write+0x1fb/0x216 [<ffffffff80......>] ? n_tty_write+0x0/0x38c [<ffffffff80......>] ? redirected_tty_write+0x7f/0x92 [<ffffffff80......>] ? sysret_check+0x27/0x62 [<ffffffff80......>] ? trace_hardirqs_on_caller+0x114/0x138 [<ffffffff80......>] ? trace_hardirqs_on_thunk+0x3a/0x3f [<ffffffff80......>] ? __wake_up+0x22/0x50 [<ffffffff80......>] ? system_call_fastpath+0x16/0x1b Code: 00 19 c0 31 d2 85 c0 75 30 48 8d 46 08 48 39 46 08 74 04 0f 0b eb fe 83 79 20 00 48 8b 01 0f 45 3d c5 eb b9 00 48 f7 d0 48 63 d7 <48> 8b 3c d0 e8 f9 fe ff ff ba 01 00 00 00 89 d0 c9 c3 55 48 89 RIP [<ffffffff80247521>] queue_work_on+0x39/0x4b RSP <ffff88007b4d3d58> CR2: 000077ff8a29a7bf ---[ end trace ... ]--- note: halt[4573] exited with preempt_count 2 Steps to reproduce: seen once on shutdown.
Created attachment 19709 [details] Still image of the crash on display
Created attachment 19710 [details] Dmesg of that run before the crash (I think). The BUG of using smp_processor_id in preemptible was reported separately.
The patch fragment (or rather it's equivalent) from the original comment is already present in current upstream kernels.
This bug is incomprehensible -- closing.