Hello, syzbot found the following issue on: HEAD commit: 69b41ac87e4a Merge tag 'for-6.2-rc2-tag' of git://git.kern.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=11aacc94480000 kernel config: https://syzkaller.appspot.com/x/.config?x=b3a84b3173b6e1cb dashboard link: https://syzkaller.appspot.com/bug?extid=a40ed4dfdfabdc0cdf9e compiler: aarch64-linux-gnu-gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2 userspace arch: arm64 Unfortunately, I don't have any reproducer for this issue yet. IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+a40ed4dfdfabdc0cdf9e@xxxxxxxxxxxxxxxxxxxxxxxxx ------------[ cut here ]------------ WARNING: CPU: 0 PID: 3043 at mm/kfence/core.c:1059 __kfence_free+0x80/0xb4 mm/kfence/core.c:1059 Modules linked in: CPU: 0 PID: 3043 Comm: syz-executor.1 Not tainted 6.2.0-rc2-syzkaller-00010-g69b41ac87e4a #0 Hardware name: linux,dummy-virt (DT) pstate: 80400009 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : __kfence_free+0x80/0xb4 mm/kfence/core.c:1059 lr : kfence_free include/linux/kfence.h:186 [inline] lr : __slab_free+0x358/0x55c mm/slub.c:3588 sp : ffff80000aaeba20 x29: ffff80000aaeba20 x28: ffff00007b580c00 x27: ffff80000a383398 x26: f3ff000002c02a00 x25: ffff00007b580c00 x24: ffff00007b580c00 x23: ffff00007b580c00 x22: f9ff000005431f00 x21: ffff8000082328dc x20: f3ff000002c02a00 x19: fffffc0001ed6000 x18: 0000000000000002 x17: 0000000000000000 x16: 0000000000000000 x15: 0000000000000000 x14: 0000000000000001 x13: 000000000006ad0a x12: fdff000005cb9b24 x11: fdff000005cb9b00 x10: 0000000000000000 x9 : 0000000000000000 x8 : 0000000000000000 x7 : 0000000000000000 x6 : ffff80000a380000 x5 : ffff8000082328dc x4 : ffff80000a6311f8 x3 : ffff80000a380340 x2 : fdff000005cf7c00 x1 : ffff80000a642f70 x0 : ffff00007b580c00 Call trace: __kfence_free+0x80/0xb4 mm/kfence/core.c:1059 kfence_free include/linux/kfence.h:186 [inline] __slab_free+0x358/0x55c mm/slub.c:3588 do_slab_free mm/slub.c:3731 [inline] slab_free mm/slub.c:3788 [inline] __kmem_cache_free+0x2d0/0x2f0 mm/slub.c:3800 kfree+0x60/0xb0 mm/slab_common.c:1020 kvfree+0x3c/0x50 mm/util.c:627 xt_free_table_info+0x78/0x90 net/netfilter/x_tables.c:1212 __do_replace+0x260/0x330 net/ipv4/netfilter/ip_tables.c:1087 do_replace net/ipv6/netfilter/ip6_tables.c:1157 [inline] do_ip6t_set_ctl+0x36c/0x4b4 net/ipv6/netfilter/ip6_tables.c:1639 nf_setsockopt+0x68/0x94 net/netfilter/nf_sockopt.c:101 ipv6_setsockopt+0x98/0xe4 net/ipv6/ipv6_sockglue.c:1028 tcp_setsockopt+0x20/0x3c net/ipv4/tcp.c:3801 sock_common_setsockopt+0x1c/0x2c net/core/sock.c:3664 __sys_setsockopt+0xd4/0x1a0 net/socket.c:2246 __do_sys_setsockopt net/socket.c:2257 [inline] __se_sys_setsockopt net/socket.c:2254 [inline] __arm64_sys_setsockopt+0x28/0x40 net/socket.c:2254 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x48/0x114 arch/arm64/kernel/syscall.c:52 el0_svc_common.constprop.0+0x44/0xec arch/arm64/kernel/syscall.c:142 do_el0_svc+0x38/0xc0 arch/arm64/kernel/syscall.c:197 el0_svc+0x2c/0xb0 arch/arm64/kernel/entry-common.c:637 el0t_64_sync_handler+0xb8/0xc0 arch/arm64/kernel/entry-common.c:655 el0t_64_sync+0x19c/0x1a0 arch/arm64/kernel/entry.S:584 ---[ end trace 0000000000000000 ]--- --- 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.
