Grazvydas Ignotas <notasas@xxxxxxxxx> writes: > In case debugfs does not init for some reason (or is disabled > on older kernels) driver does not allocate stats.fw_stats > structure, but tries to clear it later and trips on a NULL > pointer: > > Unable to handle kernel NULL pointer dereference at virtual address > 00000000 > PC is at __memzero+0x24/0x80 > Backtrace: > [<bf0ddb88>] (wl1251_debugfs_reset+0x0/0x30 [wl1251]) > [<bf0d6a2c>] (wl1251_op_stop+0x0/0x12c [wl1251]) > [<bf0bc228>] (ieee80211_stop_device+0x0/0x74 [mac80211]) > [<bf0b0d10>] (ieee80211_stop+0x0/0x4ac [mac80211]) > [<c02deeac>] (dev_close+0x0/0xb4) > [<c02deac0>] (dev_change_flags+0x0/0x184) > [<c031f478>] (devinet_ioctl+0x0/0x704) > [<c0320720>] (inet_ioctl+0x0/0x100) > > Add a NULL pointer check to fix this. > > Signed-off-by: Grazvydas Ignotas <notasas@xxxxxxxxx> Acked-by: Kalle Valo <kalle.valo@xxxxxx> Thank you for all the patches. -- Kalle Valo -- 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
