loop4: detected capacity change from 0 to 2048 UDF-fs: INFO Mounting volume 'LiuxUDF', timestamp 2022/11/22 14:59 (1000) ================================================================== BUG: KASAN: slab-out-of-bounds in cfg80211_wext_freq+0x1f9/0x240 net/wireless/wext-compat.c:238 Read of size 2 at addr ffff88802af9b940 by task syz-executor.4/11464 CPU: 0 PID: 11464 Comm: syz-executor.4 Not tainted 6.10.0-rc3-next-20240611-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024 Call Trace: __dump_stack lib/dump_stack.c:91 [inline] dump_stack_lvl+0x241/0x360 lib/dump_stack.c:117 print_address_description mm/kasan/report.c:377 [inline] print_report+0x169/0x550 mm/kasan/report.c:488 kasan_report+0x143/0x180 mm/kasan/report.c:601 cfg80211_wext_freq+0x1f9/0x240 net/wireless/wext-compat.c:238 cfg80211_wext_siwscan+0x4fd/0x10d0 net/wireless/scan.c:3463 ioctl_standard_iw_point+0x788/0xcb0 net/wireless/wext-core.c:867 ioctl_standard_call+0xc7/0x290 net/wireless/wext-core.c:1052 wext_ioctl_dispatch+0x58e/0x640 net/wireless/wext-core.c:1016 wext_handle_ioctl+0x15f/0x270 net/wireless/wext-core.c:1077 sock_ioctl+0x17f/0x8e0 net/socket.c:1275 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:907 [inline] __se_sys_ioctl+0xfc/0x170 fs/ioctl.c:893 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f8a4527cea9 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 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 b0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f8a44dff0c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007f8a453b3f80 RCX: 00007f8a4527cea9 RDX: 0000000020000000 RSI: 0000000000008b18 RDI: 0000000000000007 RBP: 00007f8a452ebff4 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000000b R14: 00007f8a453b3f80 R15: 00007ffd457f4238 Allocated by task 11464: kasan_save_stack mm/kasan/common.c:47 [inline] kasan_save_track+0x3f/0x80 mm/kasan/common.c:68 poison_kmalloc_redzone mm/kasan/common.c:370 [inline] __kasan_kmalloc+0x98/0xb0 mm/kasan/common.c:387 kasan_kmalloc include/linux/kasan.h:211 [inline] __do_kmalloc_node mm/slub.c:4140 [inline] __kmalloc_noprof+0x1f9/0x400 mm/slub.c:4153 kmalloc_noprof include/linux/slab.h:664 [inline] kzalloc_noprof include/linux/slab.h:778 [inline] ioctl_standard_iw_point+0x4ae/0xcb0 net/wireless/wext-core.c:828 ioctl_standard_call+0xc7/0x290 net/wireless/wext-core.c:1052 wext_ioctl_dispatch+0x58e/0x640 net/wireless/wext-core.c:1016 wext_handle_ioctl+0x15f/0x270 net/wireless/wext-core.c:1077 sock_ioctl+0x17f/0x8e0 net/socket.c:1275 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:907 [inline] __se_sys_ioctl+0xfc/0x170 fs/ioctl.c:893 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f The buggy address belongs to the object at ffff88802af9b800 which belongs to the cache kmalloc-512 of size 512 The buggy address is located 4 bytes to the right of allocated 316-byte region [ffff88802af9b800, ffff88802af9b93c) The buggy address belongs to the physical page: page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x2af98 head: order:2 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0 anon flags: 0xfff00000000040(head|node=0|zone=1|lastcpupid=0x7ff) page_type: 0xfdffffff(slab) raw: 00fff00000000040 ffff888015041c80 0000000000000000 dead000000000001 raw: 0000000000000000 0000000080100010 00000001fdffffff 0000000000000000 head: 00fff00000000040 ffff888015041c80 0000000000000000 dead000000000001 head: 0000000000000000 0000000080100010 00000001fdffffff 0000000000000000 head: 00fff00000000002 ffffea0000abe601 ffffffffffffffff 0000000000000000 head: 0000000000000004 0000000000000000 00000000ffffffff 0000000000000000 page dumped because: kasan: bad access detected page_owner tracks the page as allocated page last allocated via order 2, migratetype Unmovable, gfp_mask 0xd20c0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 5117, tgid 5117 (syz-executor.1), ts 76128329307, free_ts 76120178212 set_page_owner include/linux/page_owner.h:32 [inline] post_alloc_hook+0x1f3/0x230 mm/page_alloc.c:1470 prep_new_page mm/page_alloc.c:1478 [inline] get_page_from_freelist+0x2cbd/0x2d70 mm/page_alloc.c:3457 __alloc_pages_noprof+0x256/0x6c0 mm/page_alloc.c:4715 __alloc_pages_node_noprof include/linux/gfp.h:269 [inline] alloc_pages_node_noprof include/linux/gfp.h:296 [inline] alloc_slab_page+0x5f/0x120 mm/slub.c:2283 allocate_slab+0x5a/0x2f0 mm/slub.c:2446 new_slab mm/slub.c:2499 [inline] ___slab_alloc+0xcd1/0x14b0 mm/slub.c:3685 __slab_alloc+0x58/0xa0 mm/slub.c:3775 __slab_alloc_node mm/slub.c:3828 [inline] slab_alloc_node mm/slub.c:4007 [inline] __kmalloc_cache_noprof+0x1d5/0x2c0 mm/slub.c:4166 kmalloc_noprof include/linux/slab.h:660 [inline] kzalloc_noprof include/linux/slab.h:778 [inline] mca_alloc net/ipv6/mcast.c:880 [inline] __ipv6_dev_mc_inc+0x426/0xa90 net/ipv6/mcast.c:936 ipv6_add_dev+0xe03/0x1220 net/ipv6/addrconf.c:468 addrconf_notify+0x6a7/0x1020 net/ipv6/addrconf.c:3652 notifier_call_chain+0x19f/0x3e0 kernel/notifier.c:93 call_netdevice_notifiers_extack net/core/dev.c:2030 [inline] call_netdevice_notifiers net/core/dev.c:2044 [inline] register_netdevice+0x1570/0x19e0 net/core/dev.c:10408 veth_newlink+0x628/0xcd0 drivers/net/veth.c:1829 rtnl_newlink_create net/core/rtnetlink.c:3596 [inline] __rtnl_newlink net/core/rtnetlink.c:3816 [inline] rtnl_newlink+0x16c7/0x22b0 net/core/rtnetlink.c:3829 rtnetlink_rcv_msg+0x892/0x1170 net/core/rtnetlink.c:6727 page last free pid 5133 tgid 5133 stack trace: reset_page_owner include/linux/page_owner.h:25 [inline] free_pages_prepare mm/page_alloc.c:1089 [inline] free_unref_page+0xd22/0xea0 mm/page_alloc.c:2621 stack_depot_save_flags+0x6f6/0x830 lib/stackdepot.c:666 kasan_save_stack mm/kasan/common.c:48 [inline] kasan_save_track+0x51/0x80 mm/kasan/common.c:68 unpoison_slab_object mm/kasan/common.c:312 [inline] __kasan_slab_alloc+0x66/0x80 mm/kasan/common.c:338 kasan_slab_alloc include/linux/kasan.h:201 [inline] slab_post_alloc_hook mm/slub.c:3959 [inline] slab_alloc_node mm/slub.c:4019 [inline] kmem_cache_alloc_noprof+0x135/0x2a0 mm/slub.c:4026 fill_pool lib/debugobjects.c:168 [inline] debug_objects_fill_pool+0x4ec/0x9b0 lib/debugobjects.c:615 __debug_object_init+0xa4/0x400 lib/debugobjects.c:627 debug_timer_init kernel/time/timer.c:831 [inline] debug_init kernel/time/timer.c:879 [inline] init_timer_key+0x38/0x310 kernel/time/timer.c:923 ipv6_mc_init_dev+0x401/0xa50 net/ipv6/mcast.c:2769 ipv6_add_dev+0xc64/0x1220 net/ipv6/addrconf.c:453 addrconf_notify+0x6a7/0x1020 net/ipv6/addrconf.c:3652 notifier_call_chain+0x19f/0x3e0 kernel/notifier.c:93 call_netdevice_notifiers_extack net/core/dev.c:2030 [inline] call_netdevice_notifiers net/core/dev.c:2044 [inline] register_netdevice+0x1570/0x19e0 net/core/dev.c:10408 xfrmi_create net/xfrm/xfrm_interface_core.c:253 [inline] xfrmi_newlink+0x5bd/0x830 net/xfrm/xfrm_interface_core.c:854 rtnl_newlink_create net/core/rtnetlink.c:3596 [inline] __rtnl_newlink net/core/rtnetlink.c:3816 [inline] rtnl_newlink+0x16c7/0x22b0 net/core/rtnetlink.c:3829 rtnetlink_rcv_msg+0x892/0x1170 net/core/rtnetlink.c:6727 Memory state around the buggy address: ffff88802af9b800: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffff88802af9b880: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 >ffff88802af9b900: 00 00 00 00 00 00 00 04 fc fc fc fc fc fc fc fc ^ ffff88802af9b980: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff88802af9ba00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ==================================================================