Hello, syzbot found the following issue on: HEAD commit: 3ac88fa4605e Merge tag 'net-6.2-final' of git://git.kernel.. git tree: upstream console+strace: https://syzkaller.appspot.com/x/log.txt?x=12986e58c80000 kernel config: https://syzkaller.appspot.com/x/.config?x=fe56f7d193926860 dashboard link: https://syzkaller.appspot.com/bug?extid=f61594de72d6705aea03 compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=14123acf480000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=143058d7480000 Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/37b6278f1cdc/disk-3ac88fa4.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/0a0d5eb58ca1/vmlinux-3ac88fa4.xz kernel image: https://storage.googleapis.com/syzbot-assets/6c92dbf4b7ab/bzImage-3ac88fa4.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+f61594de72d6705aea03@xxxxxxxxxxxxxxxxxxxxxxxxx ================================================================== BUG: KASAN: vmalloc-out-of-bounds in __ebt_unregister_table+0xc00/0xcd0 net/bridge/netfilter/ebtables.c:1168 Read of size 4 at addr ffffc90005425000 by task kworker/u4:4/74 CPU: 0 PID: 74 Comm: kworker/u4:4 Not tainted 6.2.0-rc8-syzkaller-00083-g3ac88fa4605e #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/21/2023 Workqueue: netns cleanup_net Call Trace: <TASK> __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:306 [inline] print_report+0x15e/0x45d mm/kasan/report.c:417 kasan_report+0xbf/0x1f0 mm/kasan/report.c:517 __ebt_unregister_table+0xc00/0xcd0 net/bridge/netfilter/ebtables.c:1168 ebt_unregister_table+0x35/0x40 net/bridge/netfilter/ebtables.c:1372 ops_exit_list+0xb0/0x170 net/core/net_namespace.c:169 cleanup_net+0x4ee/0xb10 net/core/net_namespace.c:613 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:308 </TASK> Memory state around the buggy address: ffffc90005424f00: f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 ffffc90005424f80: f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 >ffffc90005425000: f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 ^ ffffc90005425080: f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 ffffc90005425100: f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 ================================================================== --- This report is generated by a bot. It may contain errors. See https://goo.gl/tpsmEJ for more information about syzbot. syzbot engineers can be reached at syzkaller@xxxxxxxxxxxxxxxx. syzbot will keep track of this issue. See: https://goo.gl/tpsmEJ#status for how to communicate with syzbot. syzbot can test patches for this issue, for details see: https://goo.gl/tpsmEJ#testing-patches
