diff options
Diffstat (limited to 'package/kernel/mac80211/patches/365-0004-brcmfmac-only-call-brcmf_cfg80211_detach-when-attach.patch')
-rw-r--r-- | package/kernel/mac80211/patches/365-0004-brcmfmac-only-call-brcmf_cfg80211_detach-when-attach.patch | 92 |
1 files changed, 0 insertions, 92 deletions
diff --git a/package/kernel/mac80211/patches/365-0004-brcmfmac-only-call-brcmf_cfg80211_detach-when-attach.patch b/package/kernel/mac80211/patches/365-0004-brcmfmac-only-call-brcmf_cfg80211_detach-when-attach.patch deleted file mode 100644 index 2b61f4eda5..0000000000 --- a/package/kernel/mac80211/patches/365-0004-brcmfmac-only-call-brcmf_cfg80211_detach-when-attach.patch +++ /dev/null @@ -1,92 +0,0 @@ -From: Arend van Spriel <arend@broadcom.com> -Date: Wed, 26 Aug 2015 22:14:56 +0200 -Subject: [PATCH] brcmfmac: only call brcmf_cfg80211_detach() when attach - was successful - -In brcmf_bus_start() the function brcmf_cfg80211_attach() is called which -may fail. If this happens we should not call brcmf_cfg80211_detach() in -the failure path as it will result in NULL pointer dereference: - - brcmf_fweh_activate_events: Set event_msgs error (-5) - brcmf_bus_start: failed: -5 - brcmf_sdio_firmware_callback: dongle is not responding - BUG: unable to handle kernel NULL pointer dereference at 0000000000000068 - IP: [<ffffffff811e8f08>] kernfs_find_ns+0x18/0xd0 - PGD 0 - Oops: 0000 [#1] SMP - Modules linked in: brcmfmac(O) brcmutil(O) cfg80211 auth_rpcgss - CPU: 1 PID: 45 Comm: kworker/1:1 Tainted: G O - Hardware name: Dell Inc. Latitude E6410/07XJP9, BIOS A07 02/15/2011 - Workqueue: events request_firmware_work_func - task: ffff880036c09ac0 ti: ffff880036dd4000 task.ti: ffff880036dd4000 - RIP: 0010:[<ffffffff811e8f08>] [<ffffffff811e8f08>] kernfs_find_ns+0x18/0xd0 - RSP: 0018:ffff880036dd7a28 EFLAGS: 00010246 - RAX: ffff880036c09ac0 RBX: 0000000000000000 RCX: 000000007fffffff - RDX: 0000000000000000 RSI: ffffffff816578b9 RDI: 0000000000000000 - RBP: ffff880036dd7a48 R08: 0000000000000000 R09: ffff880036c0b340 - R10: 00000000000002ec R11: ffff880036dd7b08 R12: ffffffff816578b9 - R13: 0000000000000000 R14: ffffffff816578b9 R15: ffff8800c6c87000 - FS: 0000000000000000(0000) GS:ffff88012bc40000(0000) knlGS:0000000000000000 - CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b - CR2: 0000000000000068 CR3: 0000000001a0b000 CR4: 00000000000006e0 - Stack: - 0000000000000000 ffffffff816578b9 0000000000000000 ffff8800c0d003c8 - ffff880036dd7a78 ffffffff811e8ff5 0000000ffffffff1 ffffffff81a9b060 - ffff8800c789f880 ffff8800c0d00000 ffff880036dd7a98 ffffffff811ebe0d - Call Trace: - [<ffffffff811e8ff5>] kernfs_find_and_get_ns+0x35/0x60 - [<ffffffff811ebe0d>] sysfs_unmerge_group+0x1d/0x60 - [<ffffffff81404ef2>] dpm_sysfs_remove+0x22/0x60 - [<ffffffff813f9db9>] device_del+0x49/0x240 - [<ffffffff815da768>] rfkill_unregister+0x58/0xc0 - [<ffffffffa06bd91b>] wiphy_unregister+0xab/0x2f0 [cfg80211] - [<ffffffffa0742fe3>] brcmf_cfg80211_detach+0x23/0x50 [brcmfmac] - [<ffffffffa074d986>] brcmf_detach+0x86/0xe0 [brcmfmac] - [<ffffffffa0757de8>] brcmf_sdio_remove+0x48/0x120 [brcmfmac] - [<ffffffffa0758ed9>] brcmf_sdiod_remove+0x29/0xd0 [brcmfmac] - [<ffffffffa0759031>] brcmf_ops_sdio_remove+0xb1/0x110 [brcmfmac] - [<ffffffffa001c267>] sdio_bus_remove+0x37/0x100 [mmc_core] - [<ffffffff813fe026>] __device_release_driver+0x96/0x130 - [<ffffffff813fe0e3>] device_release_driver+0x23/0x30 - [<ffffffffa0754bc8>] brcmf_sdio_firmware_callback+0x2a8/0x5d0 [brcmfmac] - [<ffffffffa074deaf>] brcmf_fw_request_nvram_done+0x15f/0x5e0 [brcmfmac] - [<ffffffff8140142f>] ? devres_add+0x3f/0x50 - [<ffffffff810642b5>] ? usermodehelper_read_unlock+0x15/0x20 - [<ffffffff81400000>] ? platform_match+0x70/0xa0 - [<ffffffff8140f400>] request_firmware_work_func+0x30/0x60 - [<ffffffff8106828c>] process_one_work+0x14c/0x3d0 - [<ffffffff8106862a>] worker_thread+0x11a/0x450 - [<ffffffff81068510>] ? process_one_work+0x3d0/0x3d0 - [<ffffffff8106d692>] kthread+0xd2/0xf0 - [<ffffffff8106d5c0>] ? kthread_create_on_node+0x180/0x180 - [<ffffffff815ed35f>] ret_from_fork+0x3f/0x70 - [<ffffffff8106d5c0>] ? kthread_create_on_node+0x180/0x180 - Code: e9 40 fe ff ff 48 89 d8 eb 87 66 0f 1f 84 00 00 00 00 00 66 66 66 66 - 90 55 48 89 e5 41 56 49 89 f6 41 55 49 89 d5 31 d2 41 54 53 <0f> b7 - 47 68 48 8b 5f 48 66 c1 e8 05 83 e0 01 4d 85 ed 0f b6 c8 - RIP [<ffffffff811e8f08>] kernfs_find_ns+0x18/0xd0 - RSP <ffff880036dd7a28> - CR2: 0000000000000068 - ---[ end trace 87d6ec0d3fe46740 ]--- - -Reported-by: Daniel (Deognyoun) Kim <dekim@broadcom.com> -Reviewed-by: Hante Meuleman <meuleman@broadcom.com> -Reviewed-by: Franky (Zhenhui) Lin <frankyl@broadcom.com> -Reviewed-by: Pieter-Paul Giesberts <pieterpg@broadcom.com> -Signed-off-by: Arend van Spriel <arend@broadcom.com> ---- - ---- a/drivers/net/wireless/brcm80211/brcmfmac/core.c -+++ b/drivers/net/wireless/brcm80211/brcmfmac/core.c -@@ -1049,7 +1049,10 @@ int brcmf_bus_start(struct device *dev) - fail: - if (ret < 0) { - brcmf_err("failed: %d\n", ret); -- brcmf_cfg80211_detach(drvr->config); -+ if (drvr->config) { -+ brcmf_cfg80211_detach(drvr->config); -+ drvr->config = NULL; -+ } - if (drvr->fws) { - brcmf_fws_del_interface(ifp); - brcmf_fws_deinit(drvr); |