1. 06 Mar, 2012 1 commit
    • Vasanthakumar Thiagarajan's avatar
      ath6kl: Fix kernel panic while receiving fwlog during boot · 068a4633
      Vasanthakumar Thiagarajan authored
      "ath6kl: Defer wiphy and netdev registration till the end of ath6kl_core_init()"
      causes kernel panic by accessing the unallocated debug resources during
      boot time. To fix this, split the debug initialization funtion into two,
      one initializes the debug resource and the other takes care of debugfs
      initialization. When this issue shows up the kernel crash dump would
      look like
      
       ath6kl_debug_fwlog_event+0x9c/0x10a
       [<c10666c9>] register_lock_class+0x57/0x288
       [<c1065cd3>] ? trace_hardirqs_on+0xb/0xd
       [<f801f4c9>] ? ath6kl_debug_fwlog_event+0x9c/0x10a
       [<c1066a8a>] __lock_acquire+0x96/0xbe5
       [<c106007b>] ? alarmtimer_suspend+0x80/0x127
       [<c10258da>] ? vprintk+0x394/0x3b1
       [<f801f4c9>] ? ath6kl_debug_fwlog_event+0x9c/0x10a
       [<c10676b3>] lock_acquire+0xda/0xf9
       [<f801f4c9>] ? ath6kl_debug_fwlog_event+0x9c/0x10a
       [<c1532ce3>] _raw_spin_lock+0x28/0x58
       [<f801f4c9>] ? ath6kl_debug_fwlog_event+0x9c/0x10a
       [<f801f4c9>] ath6kl_debug_fwlog_event+0x9c/0x10a
       [<f80310a4>] ath6kl_wmi_control_rx+0x69d/0xb50 [ath6kl_core]
       [<f802d2e1>] ? ath6kl_rx+0x3c/0x839 [ath6kl_core]
       [<f802d35d>] ath6kl_rx+0xb8/0x839 [ath6kl_core]
       [<c104b81e>] ? local_clock+0x2d/0x4e
       [<c102a0af>] ? _local_bh_enable_ip+0x94/0x98
       [<f802bfc0>] ? ath6kl_alloc_amsdu_rxbuf+0xb7/0xb7
       [<f8023b28>] ath6kl_htc_rxmsg_pending_handler+0x891/0x988 [ath6kl_core]
       [<f802bf00>] ? ath6kl_refill_amsdu_rxbufs+0x89/0x92
       [<f802d2a5>] ? aggr_timeout+0xed/0xed [ath6kl_core]
       [<f802bfc0>] ? ath6kl_alloc_amsdu_rxbuf+0xb7/0xb7
       [<f802c420>] ? ath6kl_tx_complete+0x376/0x376 [ath6kl_core]
       [<f8020e92>] ath6kl_hif_intr_bh_handler+0xf7/0x33e
       [<c138ab00>] ? mmc_host_disable+0x15/0x3a
       [<f8123b5c>] ath6kl_sdio_irq_handler+0x3c/0x90 [ath6kl_sdio]
       [<c1392f56>] sdio_irq_thread+0xb6/0x29c
       [<c1392ea0>] ? sdio_claim_irq+0x1cb/0x1cb
       [<c103d4c0>] kthread+0x67/0x6c
       [<c103d459>] ? __init_kthread_worker+0x42/0x42
       [<c153903a>] kernel_thread_helper+0x6/0xd
       BUG: unable to handle kernel NULL pointer dereference at
      EIP: [<f801f4d4>] ath6kl_debug_fwlog_event+0xa7/0x10a
      
      kvalo: rename new function to ath6kl_debug_init_fs() and add a comment
      why it's needed
      Reported-by: default avatarKalle Valo <kvalo@qca.qualcomm.com>
      Signed-off-by: default avatarVasanthakumar Thiagarajan <vthiagar@qca.qualcomm.com>
      Signed-off-by: default avatarKalle Valo <kvalo@qca.qualcomm.com>
      068a4633
  2. 05 Mar, 2012 2 commits
  3. 01 Mar, 2012 11 commits
  4. 29 Feb, 2012 19 commits
  5. 28 Feb, 2012 5 commits
  6. 27 Feb, 2012 2 commits