Hello, syzbot found the following issue on: HEAD commit: 78e709522d2c Merge tag 'for_linus' of git://git.kernel.org.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=170ed963300000 kernel config: https://syzkaller.appspot.com/x/.config?x=2150ebd7e72fa695 dashboard link: https://syzkaller.appspot.com/bug?extid=bd637e7821f7afda67c4 compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.1 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+bd637e7821f7afda67c4@xxxxxxxxxxxxxxxxxxxxxxxxx general protection fault, probably for non-canonical address 0xfbd59c000000005a: 0000 [#1] PREEMPT SMP KASAN KASAN: maybe wild-memory-access in range [0xdead0000000002d0-0xdead0000000002d7] CPU: 1 PID: 6020 Comm: syz-executor.5 Not tainted 5.14.0-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:nf_tables_dump_rules+0x52f/0xbc0 net/netfilter/nf_tables_api.c:3015 Code: 4c 8b 28 4d 85 ed 0f 84 65 01 00 00 e8 3a 0e 07 fa 49 8d bc 24 d0 01 00 00 48 be 00 00 00 00 00 fc ff df 48 89 f8 48 c1 e8 03 <80> 3c 30 00 0f 85 d2 05 00 00 49 8b b4 24 d0 01 00 00 4c 89 ef e8 RSP: 0018:ffffc9000c897128 EFLAGS: 00010a06 RAX: 1bd5a0000000005a RBX: ffff88807913cc00 RCX: ffffc90018d44000 RDX: 0000000000040000 RSI: dffffc0000000000 RDI: dead0000000002d0 RBP: ffff88803ace5548 R08: 0000000000000000 R09: 0000000000000000 R10: ffffffff876efd52 R11: 0000000000000000 R12: dead000000000100 R13: ffff88806e74adc0 R14: ffff88801c078a00 R15: ffff88803ace55c8 FS: 00007f5c96649700(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b2fc22000 CR3: 000000007c8d6000 CR4: 00000000001506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: netlink_dump+0x4b9/0xb70 net/netlink/af_netlink.c:2278 __netlink_dump_start+0x642/0x900 net/netlink/af_netlink.c:2383 netlink_dump_start include/linux/netlink.h:258 [inline] nft_netlink_dump_start_rcu+0x83/0x1c0 net/netfilter/nf_tables_api.c:859 nf_tables_getrule+0x76b/0x8d0 net/netfilter/nf_tables_api.c:3119 nfnetlink_rcv_msg+0x659/0x13f0 net/netfilter/nfnetlink.c:285 netlink_rcv_skb+0x153/0x420 net/netlink/af_netlink.c:2504 nfnetlink_rcv+0x1ac/0x420 net/netfilter/nfnetlink.c:654 netlink_unicast_kernel net/netlink/af_netlink.c:1314 [inline] netlink_unicast+0x533/0x7d0 net/netlink/af_netlink.c:1340 netlink_sendmsg+0x86d/0xdb0 net/netlink/af_netlink.c:1929 sock_sendmsg_nosec net/socket.c:704 [inline] sock_sendmsg+0xcf/0x120 net/socket.c:724 ____sys_sendmsg+0x6e8/0x810 net/socket.c:2409 ___sys_sendmsg+0xf3/0x170 net/socket.c:2463 __sys_sendmsg+0xf3/0x1c0 net/socket.c:2492 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x4665f9 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 bc ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f5c96649188 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 000000000056bf80 RCX: 00000000004665f9 RDX: 0000000000000000 RSI: 0000000020000480 RDI: 0000000000000005 RBP: 00000000004bfcc4 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056bf80 R13: 0000000000a9fb1f R14: 00007f5c96649300 R15: 0000000000022000 Modules linked in: ---[ end trace 1944f3a07850fa30 ]--- RIP: 0010:nf_tables_dump_rules+0x52f/0xbc0 net/netfilter/nf_tables_api.c:3015 Code: 4c 8b 28 4d 85 ed 0f 84 65 01 00 00 e8 3a 0e 07 fa 49 8d bc 24 d0 01 00 00 48 be 00 00 00 00 00 fc ff df 48 89 f8 48 c1 e8 03 <80> 3c 30 00 0f 85 d2 05 00 00 49 8b b4 24 d0 01 00 00 4c 89 ef e8 RSP: 0018:ffffc9000c897128 EFLAGS: 00010a06 RAX: 1bd5a0000000005a RBX: ffff88807913cc00 RCX: ffffc90018d44000 RDX: 0000000000040000 RSI: dffffc0000000000 RDI: dead0000000002d0 RBP: ffff88803ace5548 R08: 0000000000000000 R09: 0000000000000000 R10: ffffffff876efd52 R11: 0000000000000000 R12: dead000000000100 R13: ffff88806e74adc0 R14: ffff88801c078a00 R15: ffff88803ace55c8 FS: 00007f5c96649700(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00005605fa2f23d8 CR3: 000000007c8d6000 CR4: 00000000001506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: 4c 8b 28 mov (%rax),%r13 3: 4d 85 ed test %r13,%r13 6: 0f 84 65 01 00 00 je 0x171 c: e8 3a 0e 07 fa callq 0xfa070e4b 11: 49 8d bc 24 d0 01 00 lea 0x1d0(%r12),%rdi 18: 00 19: 48 be 00 00 00 00 00 movabs $0xdffffc0000000000,%rsi 20: fc ff df 23: 48 89 f8 mov %rdi,%rax 26: 48 c1 e8 03 shr $0x3,%rax * 2a: 80 3c 30 00 cmpb $0x0,(%rax,%rsi,1) <-- trapping instruction 2e: 0f 85 d2 05 00 00 jne 0x606 34: 49 8b b4 24 d0 01 00 mov 0x1d0(%r12),%rsi 3b: 00 3c: 4c 89 ef mov %r13,%rdi 3f: e8 .byte 0xe8 --- This report is generated by a bot. 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