platform regulatory.0: Falling back to sysfs fallback for: regulatory.db ================================================================== BUG: KASAN: use-after-free in __list_add_valid+0x36/0xc0 lib/list_debug.c:23 Read of size 8 at addr ffff8880273128c8 by task syz-executor.4/10310 CPU: 0 PID: 10310 Comm: syz-executor.4 Not tainted 5.14.0-rc4-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x1ae/0x29f lib/dump_stack.c:105 print_address_description+0x66/0x3b0 mm/kasan/report.c:233 __kasan_report mm/kasan/report.c:419 [inline] kasan_report+0x163/0x210 mm/kasan/report.c:436 __list_add_valid+0x36/0xc0 lib/list_debug.c:23 __list_add include/linux/list.h:67 [inline] list_add include/linux/list.h:86 [inline] fw_load_sysfs_fallback+0x110/0x720 drivers/base/firmware_loader/fallback.c:516 fw_load_from_user_helper+0x242/0x320 drivers/base/firmware_loader/fallback.c:581 _request_firmware+0x3b4/0x560 drivers/base/firmware_loader/main.c:833 request_firmware+0x35/0x50 drivers/base/firmware_loader/main.c:877 reg_reload_regdb+0x81/0x200 net/wireless/reg.c:1095 genl_family_rcv_msg_doit net/netlink/genetlink.c:739 [inline] genl_family_rcv_msg net/netlink/genetlink.c:783 [inline] genl_rcv_msg+0xfb4/0x13c0 net/netlink/genetlink.c:800 netlink_rcv_skb+0x1f0/0x460 net/netlink/af_netlink.c:2504 genl_rcv+0x24/0x40 net/netlink/genetlink.c:811 netlink_unicast_kernel net/netlink/af_netlink.c:1314 [inline] netlink_unicast+0x7de/0x9b0 net/netlink/af_netlink.c:1340 netlink_sendmsg+0x9e7/0xe00 net/netlink/af_netlink.c:1929 sock_sendmsg_nosec net/socket.c:703 [inline] sock_sendmsg net/socket.c:723 [inline] ____sys_sendmsg+0x5a2/0x900 net/socket.c:2392 ___sys_sendmsg net/socket.c:2446 [inline] __sys_sendmsg+0x319/0x400 net/socket.c:2475 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x4665e9 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fb66e81d188 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 000000000056bf80 RCX: 00000000004665e9 RDX: 0000000000000000 RSI: 0000000020000200 RDI: 0000000000000003 RBP: 00000000004bfcc4 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056bf80 R13: 00007ffd1cb1c1bf R14: 00007fb66e81d300 R15: 0000000000022000 Allocated by task 10288: kasan_save_stack mm/kasan/common.c:38 [inline] kasan_set_track mm/kasan/common.c:46 [inline] set_alloc_info mm/kasan/common.c:434 [inline] ____kasan_kmalloc+0xc4/0xf0 mm/kasan/common.c:513 kasan_kmalloc include/linux/kasan.h:264 [inline] kmem_cache_alloc_trace+0x96/0x340 mm/slub.c:2983 kmalloc include/linux/slab.h:591 [inline] kzalloc include/linux/slab.h:721 [inline] __allocate_fw_priv+0x98/0x330 drivers/base/firmware_loader/main.c:187 alloc_lookup_fw_priv+0x1c0/0x380 drivers/base/firmware_loader/main.c:251 _request_firmware_prepare+0x27c/0x630 drivers/base/firmware_loader/main.c:746 _request_firmware+0x11b/0x560 drivers/base/firmware_loader/main.c:808 request_firmware+0x35/0x50 drivers/base/firmware_loader/main.c:877 reg_reload_regdb+0x81/0x200 net/wireless/reg.c:1095 genl_family_rcv_msg_doit net/netlink/genetlink.c:739 [inline] genl_family_rcv_msg net/netlink/genetlink.c:783 [inline] genl_rcv_msg+0xfb4/0x13c0 net/netlink/genetlink.c:800 netlink_rcv_skb+0x1f0/0x460 net/netlink/af_netlink.c:2504 genl_rcv+0x24/0x40 net/netlink/genetlink.c:811 netlink_unicast_kernel net/netlink/af_netlink.c:1314 [inline] netlink_unicast+0x7de/0x9b0 net/netlink/af_netlink.c:1340 netlink_sendmsg+0x9e7/0xe00 net/netlink/af_netlink.c:1929 sock_sendmsg_nosec net/socket.c:703 [inline] sock_sendmsg net/socket.c:723 [inline] ____sys_sendmsg+0x5a2/0x900 net/socket.c:2392 ___sys_sendmsg net/socket.c:2446 [inline] __sys_sendmsg+0x319/0x400 net/socket.c:2475 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae Freed by task 10288: kasan_save_stack mm/kasan/common.c:38 [inline] kasan_set_track+0x3d/0x70 mm/kasan/common.c:46 kasan_set_free_info+0x1f/0x40 mm/kasan/generic.c:360 ____kasan_slab_free+0x109/0x150 mm/kasan/common.c:366 kasan_slab_free include/linux/kasan.h:230 [inline] slab_free_hook mm/slub.c:1625 [inline] slab_free_freelist_hook+0x1d8/0x290 mm/slub.c:1650 slab_free mm/slub.c:3210 [inline] kfree+0xd0/0x1f0 mm/slub.c:4264 kref_put include/linux/kref.h:65 [inline] free_fw_priv drivers/base/firmware_loader/main.c:290 [inline] firmware_free_data drivers/base/firmware_loader/main.c:586 [inline] release_firmware+0x139/0x1b0 drivers/base/firmware_loader/main.c:1055 _request_firmware+0x408/0x560 drivers/base/firmware_loader/main.c:841 request_firmware+0x35/0x50 drivers/base/firmware_loader/main.c:877 reg_reload_regdb+0x81/0x200 net/wireless/reg.c:1095 genl_family_rcv_msg_doit net/netlink/genetlink.c:739 [inline] genl_family_rcv_msg net/netlink/genetlink.c:783 [inline] genl_rcv_msg+0xfb4/0x13c0 net/netlink/genetlink.c:800 netlink_rcv_skb+0x1f0/0x460 net/netlink/af_netlink.c:2504 genl_rcv+0x24/0x40 net/netlink/genetlink.c:811 netlink_unicast_kernel net/netlink/af_netlink.c:1314 [inline] netlink_unicast+0x7de/0x9b0 net/netlink/af_netlink.c:1340 netlink_sendmsg+0x9e7/0xe00 net/netlink/af_netlink.c:1929 sock_sendmsg_nosec net/socket.c:703 [inline] sock_sendmsg net/socket.c:723 [inline] ____sys_sendmsg+0x5a2/0x900 net/socket.c:2392 ___sys_sendmsg net/socket.c:2446 [inline] __sys_sendmsg+0x319/0x400 net/socket.c:2475 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae Last potentially related work creation: kasan_save_stack+0x27/0x50 mm/kasan/common.c:38 kasan_record_aux_stack+0xee/0x120 mm/kasan/generic.c:348 __call_rcu kernel/rcu/tree.c:3029 [inline] call_rcu+0x1a0/0xa20 kernel/rcu/tree.c:3109 refdst_drop include/net/dst.h:261 [inline] skb_dst_drop include/net/dst.h:273 [inline] skb_release_head_state+0x71/0x210 net/core/skbuff.c:725 skb_release_all net/core/skbuff.c:739 [inline] __kfree_skb+0x22/0x1d0 net/core/skbuff.c:755 geneve_rx+0x973/0x1970 drivers/net/geneve.c:304 geneve_udp_encap_recv+0x8e7/0xc00 drivers/net/geneve.c:377 udp_queue_rcv_one_skb+0x11ec/0x13d0 net/ipv4/udp.c:2144 udp_unicast_rcv_skb net/ipv4/udp.c:2378 [inline] __udp4_lib_rcv+0x1555/0x2c30 net/ipv4/udp.c:2447 ip_protocol_deliver_rcu+0x1ed/0x3b0 net/ipv4/ip_input.c:204 ip_local_deliver_finish net/ipv4/ip_input.c:231 [inline] NF_HOOK include/linux/netfilter.h:307 [inline] ip_local_deliver+0x316/0x490 net/ipv4/ip_input.c:252 __netif_receive_skb_one_core net/core/dev.c:5498 [inline] __netif_receive_skb+0x1d1/0x500 net/core/dev.c:5612 process_backlog+0x4d8/0x940 net/core/dev.c:6492 __napi_poll+0xba/0x4f0 net/core/dev.c:7047 napi_poll net/core/dev.c:7114 [inline] net_rx_action+0x62c/0xf30 net/core/dev.c:7201 __do_softirq+0x372/0x783 kernel/softirq.c:558 Second to last potentially related work creation: kasan_save_stack+0x27/0x50 mm/kasan/common.c:38 kasan_record_aux_stack+0xee/0x120 mm/kasan/generic.c:348 __call_rcu kernel/rcu/tree.c:3029 [inline] call_rcu+0x1a0/0xa20 kernel/rcu/tree.c:3109 nf_hook_entries_free net/netfilter/core.c:88 [inline] __nf_register_net_hook+0x712/0x8a0 net/netfilter/core.c:424 nf_register_net_hook+0xaa/0x180 net/netfilter/core.c:541 nf_register_net_hooks+0x4b/0x1d0 net/netfilter/core.c:557 ip_vs_register_hooks+0xc1/0x130 net/netfilter/ipvs/ip_vs_core.c:2357 ip_vs_add_service+0x2d6/0x13c0 net/netfilter/ipvs/ip_vs_ctl.c:1337 do_ip_vs_set_ctl+0x15ee/0x2210 net/netfilter/ipvs/ip_vs_ctl.c:2570 nf_setsockopt+0x29f/0x2d0 net/netfilter/nf_sockopt.c:101 ip_setsockopt+0x2962/0x54a0 net/ipv4/ip_sockglue.c:1435 ipv6_setsockopt+0x2b2/0x5770 net/ipv6/ipv6_sockglue.c:998 sctp_setsockopt+0x1f1/0xf6b0 net/sctp/socket.c:4576 __sys_setsockopt+0x552/0x980 net/socket.c:2159 __do_sys_setsockopt net/socket.c:2170 [inline] __se_sys_setsockopt net/socket.c:2167 [inline] __x64_sys_setsockopt+0xb1/0xc0 net/socket.c:2167 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae The buggy address belongs to the object at ffff888027312800 which belongs to the cache kmalloc-256 of size 256 The buggy address is located 200 bytes inside of 256-byte region [ffff888027312800, ffff888027312900) The buggy address belongs to the page: page:ffffea00009cc480 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x27312 head:ffffea00009cc480 order:1 compound_mapcount:0 flags: 0xfff00000010200(slab|head|node=0|zone=1|lastcpupid=0x7ff) raw: 00fff00000010200 ffffea0000a11780 0000000900000006 ffff888011041b40 raw: 0000000000000000 0000000000100010 00000001ffffffff 0000000000000000 page dumped because: kasan: bad access detected page_owner tracks the page as allocated page last allocated via order 1, migratetype Unmovable, gfp_mask 0xd20c0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 9290, ts 187211034128, free_ts 186949538620 prep_new_page mm/page_alloc.c:2436 [inline] get_page_from_freelist+0x779/0xa30 mm/page_alloc.c:4169 __alloc_pages+0x26c/0x5f0 mm/page_alloc.c:5391 alloc_slab_page mm/slub.c:1688 [inline] allocate_slab+0xf1/0x540 mm/slub.c:1828 new_slab mm/slub.c:1891 [inline] new_slab_objects mm/slub.c:2637 [inline] ___slab_alloc+0x1cf/0x350 mm/slub.c:2800 __slab_alloc mm/slub.c:2840 [inline] slab_alloc_node mm/slub.c:2922 [inline] slab_alloc mm/slub.c:2964 [inline] __kmalloc+0x2e7/0x390 mm/slub.c:4108 kmalloc include/linux/slab.h:596 [inline] kzalloc include/linux/slab.h:721 [inline] fib6_info_alloc+0x2c/0xd0 net/ipv6/ip6_fib.c:155 ip6_route_info_create+0x507/0x1a50 net/ipv6/route.c:3762 addrconf_f6i_alloc+0x445/0x680 net/ipv6/route.c:4580 ipv6_add_addr+0x448/0x1480 net/ipv6/addrconf.c:1089 addrconf_add_linklocal+0x33b/0xaf0 net/ipv6/addrconf.c:3182 addrconf_addr_gen+0x3ff/0xe60 net/ipv6/addrconf.c:3301 addrconf_notify+0x17ae/0x2110 net/ipv6/addrconf.c:3593 notifier_call_chain kernel/notifier.c:83 [inline] raw_notifier_call_chain+0xe7/0x170 kernel/notifier.c:410 call_netdevice_notifiers_info net/core/dev.c:2123 [inline] netdev_state_change+0x19b/0x260 net/core/dev.c:1514 linkwatch_do_dev+0x10a/0x190 net/core/link_watch.c:167 __linkwatch_run_queue+0x49f/0x7b0 net/core/link_watch.c:212 page last free stack trace: reset_page_owner include/linux/page_owner.h:24 [inline] free_pages_prepare mm/page_alloc.c:1346 [inline] free_pcp_prepare+0xc29/0xd20 mm/page_alloc.c:1397 free_unref_page_prepare mm/page_alloc.c:3332 [inline] free_unref_page+0x7e/0x550 mm/page_alloc.c:3411 free_slab mm/slub.c:1931 [inline] discard_slab mm/slub.c:1937 [inline] unfreeze_partials+0x18c/0x1e0 mm/slub.c:2418 put_cpu_partial+0xd2/0x210 mm/slub.c:2454 __slab_free+0x3a8/0x6b0 mm/slub.c:3104 do_slab_free mm/slub.c:3198 [inline] ___cache_free+0xfc/0x120 mm/slub.c:3217 qlist_free_all mm/kasan/quarantine.c:165 [inline] kasan_quarantine_reduce+0x151/0x1c0 mm/kasan/quarantine.c:272 __kasan_slab_alloc+0x2f/0xd0 mm/kasan/common.c:444 kasan_slab_alloc include/linux/kasan.h:254 [inline] slab_post_alloc_hook mm/slab.h:519 [inline] slab_alloc_node mm/slub.c:2956 [inline] slab_alloc mm/slub.c:2964 [inline] kmem_cache_alloc_trace+0x209/0x340 mm/slub.c:2981 kmalloc include/linux/slab.h:591 [inline] tomoyo_print_header security/tomoyo/audit.c:156 [inline] tomoyo_init_log+0x171/0x1ef0 security/tomoyo/audit.c:255 tomoyo_supervisor+0x3c9/0x1460 security/tomoyo/common.c:2097 tomoyo_audit_path_number_log security/tomoyo/file.c:235 [inline] tomoyo_path_number_perm+0x533/0x790 security/tomoyo/file.c:734 security_file_ioctl+0x55/0xb0 security/security.c:1539 __do_sys_ioctl fs/ioctl.c:1063 [inline] __se_sys_ioctl+0x48/0x170 fs/ioctl.c:1055 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae Memory state around the buggy address: ffff888027312780: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff888027312800: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb >ffff888027312880: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ^ ffff888027312900: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff888027312980: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ==================================================================