miaoqing pan <miaoqing@xxxxxxxxxxxxxx> wrote: > From: Miaoqing Pan <miaoqing@xxxxxxxxxxxxxx> > > relay_open() may return NULL, check the return value to avoid the crash. > > BUG: unable to handle kernel NULL pointer dereference at 0000000000000040 > IP: [<ffffffffa01a95c5>] ath_cmn_process_fft+0xd5/0x700 [ath9k_common] > PGD 41cf28067 PUD 41be92067 PMD 0 > Oops: 0000 [#1] SMP > CPU: 0 PID: 0 Comm: swapper/0 Not tainted 4.8.6+ #35 > Hardware name: Hewlett-Packard h8-1080t/2A86, BIOS 6.15 07/04/2011 > task: ffffffff81e0c4c0 task.stack: ffffffff81e00000 > RIP: 0010:[<ffffffffa01a95c5>] [<ffffffffa01a95c5>] ath_cmn_process_fft+0xd5/0x700 [ath9k_common] > RSP: 0018:ffff88041f203ca0 EFLAGS: 00010293 > RAX: 0000000000000000 RBX: 000000000000059f RCX: 0000000000000000 > RDX: 0000000000000000 RSI: 0000000000000040 RDI: ffffffff81f0ca98 > RBP: ffff88041f203dc8 R08: ffffffffffffffff R09: 00000000000000ff > R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 > R13: ffffffff81f0ca98 R14: 0000000000000000 R15: 0000000000000000 > FS: 0000000000000000(0000) GS:ffff88041f200000(0000) knlGS:0000000000000000 > CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 > CR2: 0000000000000040 CR3: 000000041b6ec000 CR4: 00000000000006f0 > Stack: > 0000000000000363 00000000000003f3 00000000000003f3 00000000000001f9 > 000000000000049a 0000000001252c04 ffff88041f203e44 ffff880417b4bfd0 > 0000000000000008 ffff88041785b9c0 0000000000000002 ffff88041613dc60 > > Call Trace: > <IRQ> > [<ffffffffa01b6441>] ath9k_tasklet+0x1b1/0x220 [ath9k] > [<ffffffff8105d8dd>] tasklet_action+0x4d/0xf0 > [<ffffffff8105dde2>] __do_softirq+0x92/0x2a0 > > Reported-by: Devin Tuchsen <devin.tuchsen@xxxxxxxxx> > Tested-by: Devin Tuchsen <devin.tuchsen@xxxxxxxxx> > Signed-off-by: Miaoqing Pan <miaoqing@xxxxxxxxxxxxxx> Patch applied to ath-next branch of ath.git, thanks. 40bea976c72b ath9k: fix NULL pointer dereference -- https://patchwork.kernel.org/patch/9431163/ Documentation about submitting wireless patches and checking status from patchwork: https://wireless.wiki.kernel.org/en/developers/documentation/submittingpatches
