mt7915: new crash log

<6>[542649.461292] mt7530 mdio-bus:1f lan2: Link is Up - 1Gbps/Full - flow control rx/tx
<6>[542649.468994] br-lan: port 2(lan2) entered blocking state
<6>[542649.474307] br-lan: port 2(lan2) entered forwarding state
<6>[542670.242579] mt7530 mdio-bus:1f lan2: Link is Down
<6>[542670.247525] br-lan: port 2(lan2) entered disabled state
<6>[542672.963687] mt7530 mdio-bus:1f lan2: Link is Up - 1Gbps/Full - flow control off
<6>[542672.971166] br-lan: port 2(lan2) entered blocking state
<6>[542672.976781] br-lan: port 2(lan2) entered forwarding state
<6>[542924.181449] mt7530 mdio-bus:1f lan2: Link is Down
<6>[542924.186364] br-lan: port 2(lan2) entered disabled state
<6>[542952.396208] mt7530 mdio-bus:1f lan2: Link is Up - 1Gbps/Full - flow control rx/tx
<6>[542952.403850] br-lan: port 2(lan2) entered blocking state
<6>[542952.409465] br-lan: port 2(lan2) entered forwarding state
<6>[542961.504888] mt7530 mdio-bus:1f lan2: Link is Down
<6>[542961.510160] br-lan: port 2(lan2) entered disabled state
<6>[542964.511193] mt7530 mdio-bus:1f lan2: Link is Up - 1Gbps/Full - flow control off
<6>[542964.518668] br-lan: port 2(lan2) entered blocking state
<6>[542964.523965] br-lan: port 2(lan2) entered forwarding state
<1>[542971.038785] CPU 0 Unable to handle kernel paging request at virtual address 0003000c, epc == 833361c4, ra == 83335d48
<4>[542971.049519] Oops[#1]:
<4>[542971.051873] CPU: 0 PID: 7004 Comm: dnsmasq Not tainted 5.10.134 #0
<4>[542971.058110] $ 0   : 00000000 00000001 8408c768 0003000c
<4>[542971.063420] $ 4   : 000004c0 8408c76c 000004c0 817b35ac
<4>[542971.068722] $ 8   : 00000018 0006f7d6 0122e85d ffffffff
<4>[542971.074025] $12   : 0001b294 924fb42b ad530000 04400000
<4>[542971.079328] $16   : 826ff0c0 83260ca0 83260ca0 0000058a
<4>[542971.084630] $20   : 817b3508 83260d50 826ff0d8 808b6bf0
<4>[542971.089931] $24   : 22400000 37a01c2f                  
<4>[542971.095234] $28   : 8545a000 8545b8c8 807e0000 83335d48
<4>[542971.100537] Hi    : 00004377
<4>[542971.103485] Lo    : dc922010
<4>[542971.106579] epc   : 833361c4 ieee80211_pspoll_get+0xa70/0xdb0 [mac80211]
<4>[542971.113367] ra    : 83335d48 ieee80211_pspoll_get+0x5f4/0xdb0 [mac80211]
<4>[542971.120121] Status: 11008403	KERNEL EXL IE 
<4>[542971.124383] Cause : 4080000c (ExcCode 03)
<4>[542971.128455] BadVA : 0003000c
<4>[542971.131405] PrId  : 0001992f (MIPS 1004Kc)
<4>[542971.135562] Modules linked in: pppoe ppp_async wireguard pptp pppox ppp_mppe ppp_generic nft_fib_inet nf_flow_table_ipv6 nf_flow_table_ipv4 nf_flow_table_inet mt7915e mt76_connac_lib mt76 mac80211 libchacha20poly1305 ipt_REJECT cfg80211 xt_time xt_tcpudp xt_tcpmss xt_statistic xt_state xt_recent xt_nat xt_multiport xt_mark xt_mac xt_limit xt_length xt_hl xt_helper xt_ecn xt_dscp xt_conntrack xt_connmark xt_connlimit xt_connbytes xt_comment xt_TCPMSS xt_REDIRECT xt_MASQUERADE xt_LOG xt_HL xt_DSCP xt_CT xt_CLASSIFY ts_fsm ts_bm tcp_scalable tcp_bbr slhc sch_cake poly1305_mips nft_tproxy nft_socket nft_reject_ipv6 nft_reject_ipv4 nft_reject_inet nft_reject_bridge nft_reject nft_redir nft_quota nft_queue nft_objref nft_numgen nft_nat nft_meta_bridge nft_masq nft_log nft_limit nft_hash nft_fwd_netdev nft_flow_offload nft_fib_ipv6 nft_fib_ipv4 nft_fib nft_dup_netdev nft_ct nft_counter nft_compat nft_chain_nat nfnetlink_queue nf_tproxy_ipv6 nf_tproxy_ipv4 nf_tables nf_socket_ipv6 nf_socket_ipv4
<4>[542971.135944]  nf_reject_ipv4 nf_nat_tftp nf_nat_snmp_basic nf_nat_sip nf_nat_pptp nf_nat_irc nf_nat_h323 nf_nat_ftp nf_nat_amanda nf_log_ipv6 nf_log_ipv4 nf_log_common nf_flow_table nf_dup_netdev nf_conntrack_tftp nf_conntrack_snmp nf_conntrack_sip nf_conntrack_pptp nf_conntrack_irc nf_conntrack_h323 nf_conntrack_ftp nf_conntrack_broadcast nf_conntrack_bridge ts_kmp nf_conntrack_amanda nf_conncount macvlan libcurve25519_generic libcrc32c ipvlan iptable_raw iptable_nat iptable_mangle iptable_filter ipt_ECN ip_tables hwmon crc_ccitt compat chacha_mips br_netfilter asn1_decoder natflow natcap nf_nat nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 sch_tbf sch_ingress sch_htb sch_hfsc em_u32 cls_u32 cls_tcindex cls_route cls_matchall cls_fw cls_flow cls_basic act_skbedit act_mirred act_gact xt_set ip_set_list_set ip_set_hash_netportnet ip_set_hash_netport ip_set_hash_netnet ip_set_hash_netiface ip_set_hash_net ip_set_hash_mac ip_set_hash_ipportnet ip_set_hash_ipportip ip_set_hash_ipport
<4>[542971.223383]  ip_set_hash_ipmark ip_set_hash_ip ip_set_bitmap_port ip_set_bitmap_ipmac ip_set_bitmap_ip ip_set nfnetlink ip6table_mangle ip6table_filter ip6_tables ip6t_REJECT x_tables nf_reject_ipv6 ip6_gre ip_gre gre ifb ip6_udp_tunnel udp_tunnel sit ip6_tunnel tunnel6 tunnel4 ip_tunnel tun nls_utf8 nls_iso8859_1 nls_base sha256_generic libsha256 sha1_generic seqiv jitterentropy_rng drbg hmac ecb cmac leds_gpio softdog gpio_button_hotplug crc32c_generic
<4>[542971.349760] Process dnsmasq (pid: 7004, threadinfo=50dc28ad, task=f1d6dfc3, tls=77ec4df0)
<4>[542971.357981] Stack : 00000000 00000008 00000000 00000156 00000002 8333cf60 00000000 83260d40
<4>[542971.366411]         817b35ac 83260d50 826ff0c0 00000000 83260ca0 817b0000 8360e608 00000000
<4>[542971.374840]         826ff0d8 808b6bf0 807e0000 833363a8 010fa8c0 00000000 00000000 00000000
<4>[542971.383270]         00000000 00000000 00000000 826ff0c0 81624000 817b0000 816244c0 8360e608
<4>[542971.391699]         83260ca0 826ff0d8 808b6bf0 8333cf60 00000000 826ff0c0 8545b968 00000100
<4>[542971.400129]         ...
<4>[542971.402660] Call Trace:
<4>[542971.405260] [<833361c4>] ieee80211_pspoll_get+0xa70/0xdb0 [mac80211]
<4>[542971.411792] 
<4>[542971.413364] Code: ace5ff60  ac540004  ac430008 <ac650000> 1000ff19  8c430010  8fa40020  c083fffc  34630008 
<4>[542971.423188] 
<4>[542971.425223] ---[ end trace 584547a43bfbc28a ]---

code is base https://github.com/openwrt/mt76/commit/93e3fce916c62d06892d41bf00d0f4c2926c9a0b

Start with the supplied crash trace and the ieee80211_pspoll_get entry point, using the referenced mt76 commit as the baseline. Reproduce or isolate the mt7915 failure and document a verified fix or regression test; the issue provides no named test target or acceptance criteria.