================================================================== BUG: KASAN: slab-out-of-bounds in copy_from_sockptr_offset include/linux/sockptr.h:49 [inline] BUG: KASAN: slab-out-of-bounds in do_replace net/ipv4/netfilter/ip_tables.c:1127 [inline] BUG: KASAN: slab-out-of-bounds in do_ipt_set_ctl+0x1499/0x3dd0 net/ipv4/netfilter/ip_tables.c:1627 Read of size 1336 at addr ffff888022ac2960 by task syz-executor.1/5405 CPU: 1 PID: 5405 Comm: syz-executor.1 Not tainted 6.8.0-syzkaller-08951-gfe46a7dd189e #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x241/0x360 lib/dump_stack.c:114 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 kasan_check_range+0x282/0x290 mm/kasan/generic.c:189 __asan_memcpy+0x29/0x70 mm/kasan/shadow.c:105 copy_from_sockptr_offset include/linux/sockptr.h:49 [inline] do_replace net/ipv4/netfilter/ip_tables.c:1127 [inline] do_ipt_set_ctl+0x1499/0x3dd0 net/ipv4/netfilter/ip_tables.c:1627 nf_setsockopt+0x295/0x2c0 net/netfilter/nf_sockopt.c:101 do_sock_setsockopt+0x3af/0x720 net/socket.c:2311 __sys_setsockopt+0x1ae/0x250 net/socket.c:2334 __do_sys_setsockopt net/socket.c:2343 [inline] __se_sys_setsockopt net/socket.c:2340 [inline] __x64_sys_setsockopt+0xb5/0xd0 net/socket.c:2340 do_syscall_64+0xfb/0x240 entry_SYSCALL_64_after_hwframe+0x6d/0x75 RIP: 0033:0x7f7f5107de69 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:00007f7f51dc30c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000036 RAX: ffffffffffffffda RBX: 00007f7f511abf80 RCX: 00007f7f5107de69 RDX: 0000000000000040 RSI: 0000000000000000 RDI: 0000000000000004 RBP: 00007f7f510ca47a R08: 0000000000000093 R09: 0000000000000000 R10: 0000000020000b00 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000000b R14: 00007f7f511abf80 R15: 00007ffd19e1b7c8 Allocated by task 5405: 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:3966 [inline] __kmalloc+0x233/0x4a0 mm/slub.c:3979 kmalloc include/linux/slab.h:632 [inline] kzalloc include/linux/slab.h:749 [inline] sockopt_alloc_buf kernel/bpf/cgroup.c:1776 [inline] __cgroup_bpf_run_filter_setsockopt+0x2e9/0x1040 kernel/bpf/cgroup.c:1817 do_sock_setsockopt+0x6b4/0x720 net/socket.c:2293 __sys_setsockopt+0x1ae/0x250 net/socket.c:2334 __do_sys_setsockopt net/socket.c:2343 [inline] __se_sys_setsockopt net/socket.c:2340 [inline] __x64_sys_setsockopt+0xb5/0xd0 net/socket.c:2340 do_syscall_64+0xfb/0x240 entry_SYSCALL_64_after_hwframe+0x6d/0x75 The buggy address belongs to the object at ffff888022ac2900 which belongs to the cache kmalloc-192 of size 192 The buggy address is located 96 bytes inside of allocated 147-byte region [ffff888022ac2900, ffff888022ac2993) The buggy address belongs to the physical page: page:ffffea00008ab080 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x22ac2 flags: 0xfff00000000800(slab|node=0|zone=1|lastcpupid=0x7ff) page_type: 0xffffffff() raw: 00fff00000000800 ffff888014c41a00 ffffea00008be580 dead000000000004 raw: 0000000000000000 0000000080100010 00000001ffffffff 0000000000000000 page dumped because: kasan: bad access detected page_owner tracks the page as allocated page last allocated via order 0, migratetype Unmovable, gfp_mask 0x12c00(GFP_NOIO|__GFP_NOWARN|__GFP_NORETRY), pid 1, tgid 1 (swapper/0), ts 8062957590, free_ts 7555283144 set_page_owner include/linux/page_owner.h:31 [inline] post_alloc_hook+0x1ea/0x210 mm/page_alloc.c:1533 prep_new_page mm/page_alloc.c:1540 [inline] get_page_from_freelist+0x33ea/0x3580 mm/page_alloc.c:3311 __alloc_pages+0x256/0x680 mm/page_alloc.c:4569 __alloc_pages_node include/linux/gfp.h:238 [inline] alloc_pages_node include/linux/gfp.h:261 [inline] alloc_slab_page+0x5f/0x160 mm/slub.c:2175 allocate_slab mm/slub.c:2338 [inline] new_slab+0x84/0x2f0 mm/slub.c:2391 ___slab_alloc+0xc73/0x1260 mm/slub.c:3525 __slab_alloc mm/slub.c:3610 [inline] __slab_alloc_node mm/slub.c:3663 [inline] slab_alloc_node mm/slub.c:3835 [inline] __do_kmalloc_node mm/slub.c:3965 [inline] __kmalloc+0x2e5/0x4a0 mm/slub.c:3979 kmalloc include/linux/slab.h:632 [inline] usb_alloc_urb+0x3a/0x140 drivers/usb/core/urb.c:75 usb_internal_control_msg drivers/usb/core/message.c:96 [inline] usb_control_msg+0x189/0x4c0 drivers/usb/core/message.c:154 usb_get_string+0xa3/0x3b0 drivers/usb/core/message.c:844 usb_string_sub+0x72/0x420 drivers/usb/core/message.c:883 usb_string+0x3a6/0x7a0 drivers/usb/core/message.c:988 usb_cache_string+0x7d/0x100 drivers/usb/core/message.c:1030 usb_enumerate_device drivers/usb/core/hub.c:2457 [inline] usb_new_device+0x313/0x19a0 drivers/usb/core/hub.c:2584 register_root_hub+0x25c/0x550 drivers/usb/core/hcd.c:996 usb_add_hcd+0xc0c/0x1200 drivers/usb/core/hcd.c:2964 page last free pid 783 tgid 783 stack trace: reset_page_owner include/linux/page_owner.h:24 [inline] free_pages_prepare mm/page_alloc.c:1140 [inline] free_unref_page_prepare+0x95d/0xa80 mm/page_alloc.c:2346 free_unref_page+0x37/0x3f0 mm/page_alloc.c:2486 vfree+0x186/0x2e0 mm/vmalloc.c:2914 delayed_vfree_work+0x56/0x80 mm/vmalloc.c:2835 process_one_work kernel/workqueue.c:3254 [inline] process_scheduled_works+0xa00/0x1770 kernel/workqueue.c:3335 worker_thread+0x86d/0xd70 kernel/workqueue.c:3416 kthread+0x2f0/0x390 kernel/kthread.c:388 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:243 Memory state around the buggy address: ffff888022ac2880: 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc fc ffff888022ac2900: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 >ffff888022ac2980: 00 00 03 fc fc fc fc fc fc fc fc fc fc fc fc fc ^ ffff888022ac2a00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffff888022ac2a80: 00 00 00 00 fc fc fc fc fc fc fc fc fc fc fc fc ==================================================================