================================================================== BUG: KASAN: use-after-free in rxrpc_local_cmp_key net/rxrpc/local_object.c:53 [inline] BUG: KASAN: use-after-free in rxrpc_lookup_local+0xdcf/0xfb0 net/rxrpc/local_object.c:224 Read of size 2 at addr ffff88801fb06a1c by task syz-executor.3/6265 CPU: 0 PID: 6265 Comm: syz-executor.3 Not tainted 6.1.0-syzkaller-09652-g59fe41b5255f #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xd1/0x138 lib/dump_stack.c:106 print_address_description mm/kasan/report.c:284 [inline] print_report+0x15e/0x45d mm/kasan/report.c:395 kasan_report+0xbf/0x1f0 mm/kasan/report.c:495 rxrpc_local_cmp_key net/rxrpc/local_object.c:53 [inline] rxrpc_lookup_local+0xdcf/0xfb0 net/rxrpc/local_object.c:224 rxrpc_sendmsg+0x4bc/0x650 net/rxrpc/af_rxrpc.c:543 sock_sendmsg_nosec net/socket.c:714 [inline] sock_sendmsg+0xd3/0x120 net/socket.c:734 ____sys_sendmsg+0x712/0x8c0 net/socket.c:2476 ___sys_sendmsg+0x110/0x1b0 net/socket.c:2530 __sys_sendmsg+0xf7/0x1c0 net/socket.c:2559 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7fa46fe8c0a9 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 19 00 00 90 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 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fa470c42168 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007fa46ffabf80 RCX: 00007fa46fe8c0a9 RDX: 0000000000000000 RSI: 0000000020000700 RDI: 0000000000000003 RBP: 00007fa46fee7ae9 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffce145783f R14: 00007fa470c42300 R15: 0000000000022000 Allocated by task 102: kasan_save_stack+0x22/0x40 mm/kasan/common.c:45 kasan_set_track+0x25/0x30 mm/kasan/common.c:52 ____kasan_kmalloc mm/kasan/common.c:371 [inline] ____kasan_kmalloc mm/kasan/common.c:330 [inline] __kasan_kmalloc+0xa5/0xb0 mm/kasan/common.c:380 kasan_kmalloc include/linux/kasan.h:211 [inline] __do_kmalloc_node mm/slab_common.c:968 [inline] __kmalloc+0x5a/0xd0 mm/slab_common.c:981 kmalloc include/linux/slab.h:584 [inline] kzalloc include/linux/slab.h:720 [inline] ieee802_11_parse_elems_full+0x106/0x1330 net/mac80211/util.c:1655 ieee802_11_parse_elems_crc net/mac80211/ieee80211_i.h:2260 [inline] ieee802_11_parse_elems net/mac80211/ieee80211_i.h:2267 [inline] ieee80211_rx_mgmt_probe_beacon net/mac80211/ibss.c:1605 [inline] ieee80211_ibss_rx_queued_mgmt+0xd58/0x3160 net/mac80211/ibss.c:1638 ieee80211_iface_process_skb net/mac80211/iface.c:1581 [inline] ieee80211_iface_work+0xa4d/0xd70 net/mac80211/iface.c:1635 process_one_work+0x9bf/0x1710 kernel/workqueue.c:2289 worker_thread+0x669/0x1090 kernel/workqueue.c:2436 kthread+0x2e8/0x3a0 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306 Freed by task 102: kasan_save_stack+0x22/0x40 mm/kasan/common.c:45 kasan_set_track+0x25/0x30 mm/kasan/common.c:52 kasan_save_free_info+0x2e/0x40 mm/kasan/generic.c:518 ____kasan_slab_free mm/kasan/common.c:236 [inline] ____kasan_slab_free+0x160/0x1c0 mm/kasan/common.c:200 kasan_slab_free include/linux/kasan.h:177 [inline] slab_free_hook mm/slub.c:1781 [inline] slab_free_freelist_hook+0x8b/0x1c0 mm/slub.c:1807 slab_free mm/slub.c:3787 [inline] __kmem_cache_free+0xaf/0x3b0 mm/slub.c:3800 ieee80211_rx_mgmt_probe_beacon net/mac80211/ibss.c:1610 [inline] ieee80211_ibss_rx_queued_mgmt+0x1b22/0x3160 net/mac80211/ibss.c:1638 ieee80211_iface_process_skb net/mac80211/iface.c:1581 [inline] ieee80211_iface_work+0xa4d/0xd70 net/mac80211/iface.c:1635 process_one_work+0x9bf/0x1710 kernel/workqueue.c:2289 worker_thread+0x669/0x1090 kernel/workqueue.c:2436 kthread+0x2e8/0x3a0 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306 Last potentially related work creation: kasan_save_stack+0x22/0x40 mm/kasan/common.c:45 __kasan_record_aux_stack+0xbc/0xd0 mm/kasan/generic.c:488 __call_rcu_common.constprop.0+0x99/0x820 kernel/rcu/tree.c:2753 rxrpc_put_local.part.0+0x128/0x170 net/rxrpc/local_object.c:332 rxrpc_put_local+0x25/0x30 net/rxrpc/local_object.c:324 rxrpc_release_sock net/rxrpc/af_rxrpc.c:888 [inline] rxrpc_release+0x237/0x550 net/rxrpc/af_rxrpc.c:914 __sock_release+0xcd/0x280 net/socket.c:650 sock_close+0x1c/0x20 net/socket.c:1365 __fput+0x27c/0xa90 fs/file_table.c:320 task_work_run+0x16f/0x270 kernel/task_work.c:179 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline] exit_to_user_mode_loop kernel/entry/common.c:171 [inline] exit_to_user_mode_prepare+0x23c/0x250 kernel/entry/common.c:203 __syscall_exit_to_user_mode_work kernel/entry/common.c:285 [inline] syscall_exit_to_user_mode+0x1d/0x50 kernel/entry/common.c:296 do_syscall_64+0x46/0xb0 arch/x86/entry/common.c:86 entry_SYSCALL_64_after_hwframe+0x63/0xcd Second to last potentially related work creation: kasan_save_stack+0x22/0x40 mm/kasan/common.c:45 __kasan_record_aux_stack+0xbc/0xd0 mm/kasan/generic.c:488 kvfree_call_rcu+0x78/0x8f0 kernel/rcu/tree.c:3374 batadv_hardif_release+0xa6/0xe0 net/batman-adv/hard-interface.c:55 kref_put include/linux/kref.h:65 [inline] batadv_hardif_put net/batman-adv/hard-interface.h:95 [inline] batadv_hard_if_event+0xcd0/0x1450 net/batman-adv/hard-interface.c:1002 notifier_call_chain+0xb5/0x200 kernel/notifier.c:87 call_netdevice_notifiers_info+0xb5/0x130 net/core/dev.c:1944 call_netdevice_notifiers_extack net/core/dev.c:1982 [inline] call_netdevice_notifiers net/core/dev.c:1996 [inline] unregister_netdevice_many_notify+0xa2b/0x19e0 net/core/dev.c:10839 ip_tunnel_delete_nets+0x3a3/0x5c0 net/ipv4/ip_tunnel.c:1126 ops_exit_list+0x125/0x170 net/core/net_namespace.c:174 setup_net+0x9bd/0xe60 net/core/net_namespace.c:356 copy_net_ns+0x31b/0x6b0 net/core/net_namespace.c:483 create_new_namespaces+0x3f6/0xb20 kernel/nsproxy.c:110 copy_namespaces+0x3b3/0x4a0 kernel/nsproxy.c:179 copy_process+0x30e5/0x7230 kernel/fork.c:2250 kernel_clone+0xeb/0x990 kernel/fork.c:2667 __do_sys_clone+0xba/0x100 kernel/fork.c:2808 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd The buggy address belongs to the object at ffff88801fb06800 which belongs to the cache kmalloc-1k of size 1024 The buggy address is located 540 bytes inside of 1024-byte region [ffff88801fb06800, ffff88801fb06c00) The buggy address belongs to the physical page: page:ffffea00007ec000 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1fb00 head:ffffea00007ec000 order:3 compound_mapcount:0 compound_pincount:0 flags: 0xfff00000010200(slab|head|node=0|zone=1|lastcpupid=0x7ff) raw: 00fff00000010200 ffff888012441dc0 dead000000000100 dead000000000122 raw: 0000000000000000 0000000000100010 00000001ffffffff 0000000000000000 page dumped because: kasan: bad access detected page_owner tracks the page as allocated page last allocated via order 3, migratetype Unmovable, gfp_mask 0xd2000(__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 1, tgid 1 (swapper/0), ts 8139359596, free_ts 0 prep_new_page mm/page_alloc.c:2539 [inline] get_page_from_freelist+0x10b5/0x2d50 mm/page_alloc.c:4291 __alloc_pages+0x1cb/0x5b0 mm/page_alloc.c:5558 __alloc_pages_node include/linux/gfp.h:237 [inline] alloc_slab_page mm/slub.c:1853 [inline] allocate_slab+0xa7/0x350 mm/slub.c:1998 new_slab mm/slub.c:2051 [inline] ___slab_alloc+0xa91/0x1400 mm/slub.c:3193 __slab_alloc.constprop.0+0x56/0xa0 mm/slub.c:3292 __slab_alloc_node mm/slub.c:3345 [inline] slab_alloc_node mm/slub.c:3442 [inline] __kmem_cache_alloc_node+0x1a4/0x430 mm/slub.c:3491 kmalloc_node_trace+0x21/0x60 mm/slab_common.c:1075 kmalloc_node include/linux/slab.h:606 [inline] kzalloc_node include/linux/slab.h:731 [inline] blk_mq_alloc_hctx block/blk-mq.c:3665 [inline] blk_mq_alloc_and_init_hctx+0x6ca/0x1230 block/blk-mq.c:4141 blk_mq_realloc_hw_ctxs+0x43d/0x590 block/blk-mq.c:4174 blk_mq_init_allocated_queue+0x403/0x13b0 block/blk-mq.c:4233 blk_mq_init_queue_data block/blk-mq.c:4047 [inline] __blk_mq_alloc_disk+0x95/0x1a0 block/blk-mq.c:4093 add_mtd_blktrans_dev+0x648/0x1640 drivers/mtd/mtd_blkdevs.c:336 mtdblock_add_mtd+0x1cd/0x270 drivers/mtd/mtdblock.c:329 blktrans_notify_add drivers/mtd/mtd_blkdevs.c:470 [inline] blktrans_notify_add+0x7e/0xd0 drivers/mtd/mtd_blkdevs.c:462 add_mtd_device+0xaca/0x15c0 drivers/mtd/mtdcore.c:738 mtd_device_parse_register+0x510/0x850 drivers/mtd/mtdcore.c:1042 page_owner free stack trace missing Memory state around the buggy address: ffff88801fb06900: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff88801fb06980: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb >ffff88801fb06a00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ^ ffff88801fb06a80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff88801fb06b00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ==================================================================