Found this while hacking on ath10k, probably during module unload. (gdb) l *(wiphy_unregister+0xcd) 0x748 is in wiphy_unregister (/mnt/sda/home/greearb/git/linux.ath/net/wireless/core.c:653). 648 rfkill_unregister(rdev->rfkill); 649 650 rtnl_lock(); 651 rdev->wiphy.registered = false; 652 653 BUG_ON(!list_empty(&rdev->wdev_list)); 654 655 /* 656 * First remove the hardware from everywhere, this makes 657 * it impossible to find from userspace. ------------[ cut here ]------------ kernel BUG at /mnt/sda/home/greearb/git/linux.ath/net/wireless/core.c:653! invalid opcode: 0000 [#1] PREEMPT SMP Modules linked in: ath10k_pci(-) ath10k_core ath5k ath9k ath9k_common ath9k_hw nf_nat_ipv4 nf_nat veth 8021] CPU: 3 PID: 12451 Comm: rmmod Tainted: G WC 3.12.0-rc5-wl+ #2 Hardware name: To be filled by O.E.M. To be filled by O.E.M./HURONRIVER, BIOS 4.6.5 05/02/2012 task: ffff88020d478000 ti: ffff8800cb8b0000 task.ti: ffff8800cb8b0000 RIP: 0010:[<ffffffffa028b748>] [<ffffffffa028b748>] wiphy_unregister+0xcd/0x1fc [cfg80211] RSP: 0018:ffff8800cb8b1cf8 EFLAGS: 00010293 RAX: ffff8802153c8088 RBX: ffff8802153c8000 RCX: 0000000284142006 RDX: 0000000000000006 RSI: 0000000000000003 RDI: ffff8800cb8b0000 RBP: ffff8800cb8b1d58 R08: 0000000000000002 R09: 0000000000000000 R10: ffffffff814e7d11 R11: ffffffff81498427 R12: ffff8802153c8380 R13: 0000000000000000 R14: 000000000236a010 R15: 0000000000000002 FS: 00007f39b6285740(0000) GS:ffff88021fb80000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ffa10d6b000 CR3: 00000000cf2db000 CR4: 00000000000407e0 Stack: 0000000000000200 ffff8800cf2016f8 ffff8800cb8b1d58 ffffffff810b4018 0000000000000002 ffff880200000000 ffff8802153ca280 ffff8802153c88a0 ffff8802153ca280 ffff880032d12520 000000000236a010 0000000000000002 Call Trace: [<ffffffff810b4018>] ? destroy_workqueue+0x174/0x1d1 [<ffffffffa03291dd>] ieee80211_unregister_hw+0xdd/0x105 [mac80211] [<ffffffffa0830ade>] ath10k_mac_unregister+0x15/0x47 [ath10k_core] [<ffffffffa0832360>] ath10k_core_unregister+0xe/0x22 [ath10k_core] [<ffffffffa084e100>] ath10k_pci_remove+0x59/0x97 [ath10k_pci] [<ffffffff812e2fd6>] pci_device_remove+0x41/0x8f [<ffffffff8139fe79>] __device_release_driver+0x86/0xdc [<ffffffff813a0843>] driver_detach+0x79/0xa6 [<ffffffff8139fd37>] bus_remove_driver+0xca/0xef [<ffffffffa0851f4c>] ? ath10k_ce_init+0x52b/0x52b [ath10k_pci] [<ffffffff813a0de9>] driver_unregister+0x42/0x49 [<ffffffffa0851f4c>] ? ath10k_ce_init+0x52b/0x52b [ath10k_pci] [<ffffffff812e2af2>] pci_unregister_driver+0x1d/0x82 [<ffffffffa0851f4c>] ? ath10k_ce_init+0x52b/0x52b [ath10k_pci] [<ffffffffa0851f5c>] ath10k_pci_exit+0x10/0x12 [ath10k_pci] [<ffffffff810f7a4f>] SyS_delete_module+0x1ee/0x260 [<ffffffff810e4e66>] ? current_kernel_time+0xd/0x31 [<ffffffff8118db16>] ? mntput_no_expire+0x1d/0x143 [<ffffffff815967fd>] system_call_fastpath+0x1a/0x1f Code: e0 48 8b 7b 30 48 85 ff 74 05 e8 58 d6 2e e1 e8 ce c5 25 e1 48 8d 83 88 00 00 00 48 39 83 88 00 00 00 RIP [<ffffffffa028b748>] wiphy_unregister+0xcd/0x1fc [cfg80211] RSP <ffff8800cb8b1cf8> ---[ end trace 2c04c3e4cfaea150 ]--- -- Ben Greear <greearb@xxxxxxxxxxxxxxx> Candela Technologies Inc http://www.candelatech.com -- To unsubscribe from this list: send the line "unsubscribe linux-wireless" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
